CN113978403A - Collision protection assembly and commercial vehicle - Google Patents
Collision protection assembly and commercial vehicle Download PDFInfo
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- CN113978403A CN113978403A CN202111361565.9A CN202111361565A CN113978403A CN 113978403 A CN113978403 A CN 113978403A CN 202111361565 A CN202111361565 A CN 202111361565A CN 113978403 A CN113978403 A CN 113978403A
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- energy
- absorbing
- protection assembly
- energy absorbing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
Abstract
The application relates to a collision protection assembly and a commercial vehicle. The collision protection assembly includes: the energy absorption module comprises a plurality of energy absorption units, and each energy absorption unit comprises a first energy absorption piece and at least two second energy absorption pieces; one ends of all the second energy-absorbing pieces are arranged in an intersecting manner, and the other ends of the second energy-absorbing pieces radially extend; the first energy-absorbing piece is supported at the intersection of all the second energy-absorbing pieces in a deformable manner along the first direction; and each two adjacent energy absorption units are connected through at least part of the second energy absorption members in a force transmission manner. When one energy-absorbing unit or a plurality of energy-absorbing units of the collision protection assembly are impacted, because every two adjacent energy-absorbing units are connected through force transmission of at least part of the second energy-absorbing parts, the impacted energy-absorbing units can transmit impact force to the adjacent energy-absorbing units through the second energy-absorbing parts and continuously transmit the impact force to other adjacent energy-absorbing units through the energy-absorbing units, so that the dissipation and the conduction of collision load are realized, and the local crushing caused by the instability of the protection assembly is avoided.
Description
Technical Field
The application relates to the technical field of automobile collision protection, in particular to a collision protection assembly and a commercial vehicle.
Background
The cab of the flat-head commercial vehicle is limited in length of the front part of the vehicle body, and is lack of a sufficient buffering energy-absorbing space and device, so that the front part of the cab is severely invaded and deformed when a frontal collision accident happens, and people in the vehicle cannot be effectively protected.
At present, as the overall size of the cab needs to meet the requirements of regulations and design, a method of locally reinforcing a vehicle body structure at the front part of the cab is often adopted to ensure that the cab has enough crashworthiness.
However, although the method improves the structural strength of the vehicle body in the front of the cab, the method is limited by the lack of the space in the front of the vehicle body of the cab of the flat-head commercial vehicle, so that the method has the defect of poor buffering and energy absorption performance.
Disclosure of Invention
Therefore, it is necessary to provide a collision protection assembly and a commercial vehicle capable of compensating for the defect of poor collision buffer performance in the conventional method for reinforcing the front vehicle body structure of the cab.
According to one aspect of the present application, there is provided a collision protection assembly comprising:
the energy absorption module comprises a plurality of energy absorption units, and each energy absorption unit comprises a first energy absorption piece and at least two second energy absorption pieces; one ends of all the second energy-absorbing pieces are arranged in an intersecting manner, and the other ends of the second energy-absorbing pieces radially extend; the first energy-absorbing piece is supported at the intersection of all the second energy-absorbing pieces in a deformable manner along a first direction;
and every two adjacent energy-absorbing units are in force transmission connection through at least part of the second energy-absorbing piece.
In one embodiment, each of the energy-absorbing units further comprises at least two third energy-absorbing members, and each of the third energy-absorbing members is connected between the first energy-absorbing member and each of the second energy-absorbing members in a force transmission manner.
In one embodiment, all the energy absorbing units are arranged in a matrix and are constructed to form at least one energy absorbing layer in the same plane.
In one embodiment, the energy absorbing layer comprises at least two layers, and all the energy absorbing layers are stacked along the first direction.
In one embodiment, each first energy absorbing piece comprises a first connecting end and a second connecting end which are arranged oppositely along the first direction, the first connecting end is supported at the intersection of all the second energy absorbing pieces in the energy absorbing unit where the first connecting end is located, and the second connecting end is supported at the intersection of all the second energy absorbing pieces corresponding to the energy absorbing unit in the energy absorbing layer where the upper layer is located.
In one embodiment, the first energy absorbing member is helically serpentine along the first direction.
In one embodiment, the energy absorber further comprises a first cover plate and a second cover plate, and opposite ends of the energy absorber module in the first direction are fixedly connected to the first cover plate and the second cover plate respectively.
In one embodiment, the first cover plate comprises a carbon fiber cover plate; and/or
The second cover plate comprises the carbon fiber cover plate.
In one embodiment, opposite ends of the energy absorber module in the first direction are bonded to the first and second cover plates, respectively, by an oxide resin glue.
According to another aspect of the application, the utility vehicle comprises a lower cross beam arranged on the front wall of a cab and the collision protection assembly;
the collision protection assembly is detachably connected to the lower cross beam.
The energy-absorbing module of the collision protection assembly comprises a plurality of energy-absorbing units, and each energy-absorbing unit comprises a first energy-absorbing piece and at least two second energy-absorbing pieces; one ends of all the second energy-absorbing pieces are arranged in an intersecting manner, and the other ends of the second energy-absorbing pieces radially extend; the first energy-absorbing piece is supported at the intersection of all the second energy-absorbing pieces in a deformable manner along the first direction; and each two adjacent energy absorption units are connected through at least part of the second energy absorption members in a force transmission manner. When one energy-absorbing unit or a plurality of energy-absorbing units of the collision protection assembly are impacted, the first energy-absorbing piece of the impacted energy-absorbing unit bears the impact force along the first direction and can deform so as to realize the dissipation of collision energy. Meanwhile, every two adjacent energy-absorbing units are connected through force transmission of at least part of the second energy-absorbing parts, and the impacted energy-absorbing units can transmit impact force to the adjacent energy-absorbing units through at least part of the second energy-absorbing parts and continuously transmit the impact force to other adjacent energy-absorbing units through the energy-absorbing units, so that the dissipation and the conduction of collision load are realized, and the local crushing caused by the instability of the protection assembly is avoided. Therefore, the collision protection assembly realizes the dissipation and conduction of collision energy and overcomes the defect that the cab of the flat-head commercial vehicle is poor in collision buffering performance due to insufficient space at the front part of the vehicle body.
Drawings
FIG. 1 is a schematic structural view of a crash protection assembly in an embodiment of the present application;
FIG. 2 is a schematic structural view of the crash protection assembly of FIG. 1 from another perspective;
FIG. 3 is a schematic view of the collision protection assembly of FIG. 1 from another perspective.
100. An energy absorbing module; 10. an energy absorption unit; 11. a first energy absorbing member; 12. a second energy absorbing member; 13. a third energy absorbing member; 20. and an energy absorbing layer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The crash protection assembly and the commercial vehicle according to the present application will be described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a crash protection assembly in an embodiment of the present application; FIG. 2 is a schematic structural view of the crash protection assembly of FIG. 1 from another perspective; FIG. 3 is a schematic view of the collision protection assembly of FIG. 1 from another perspective.
For the purpose of illustration, only the structures described in connection with the present application are illustrated in the drawings.
Referring to fig. 1-3, a collision protection assembly according to at least one embodiment of the present disclosure includes an energy absorption module 100, which is mounted on a front portion, a rear portion, and a left and right portions of a vehicle body of a commercial vehicle to reduce damage to the commercial vehicle caused by an impact.
The energy-absorbing module 100 comprises a plurality of energy-absorbing units 10, each energy-absorbing unit 10 comprising a first energy-absorbing member 11 and at least two second energy-absorbing members 12. One end of all the second energy-absorbing members 12 are arranged in an intersecting manner, and the other end extends in a radial shape. The first energy-absorbing member 11 is supported at the intersection of all the second energy-absorbing members 12 in a deformable manner in the first direction.
Specifically, referring to fig. 1, a plurality of energy absorption units 10 of the energy absorption module 100 are arranged in an array. Specifically, in the embodiment of the present application, a plurality of energy-absorbing units 10 are arranged in an array, and each energy-absorbing unit 10 is connected to an adjacent energy-absorbing unit 10 to form an energy-absorbing module 100.
More specifically, each energy-absorbing unit 10 comprises at least two second energy-absorbing members 12, for example, also three, four, etc. In the embodiment of the application, the number of second energy-absorbing members 12 is four. One end of each of the four second energy-absorbing pieces 12 is converged to form a point which is intersected with each other, and the other end of each of the four second energy-absorbing pieces extends in a radial shape. Optionally, the second energy-absorbing member 12 is disposed 90 ° between the two members.
More specifically, the first energy-absorbing member 11 is supported deformably in the first direction at the intersection of all the second energy-absorbing members 12. Wherein the first direction can be a direction in which the energy absorber module 100 is subjected to an impact. In particular, in some embodiments, when the energy absorption module 100 is mounted to a lower beam of a front wall of a cab of a commercial vehicle, the first direction can be a direction perpendicular to the lower beam. One end of the first energy-absorbing piece 11 is supported at the intersection of all the second energy-absorbing pieces 12 along the first direction, and the other end extends towards the direction far away from the intersection of all the second energy-absorbing pieces 12 and is used for preventing the collision of the vehicle body.
The first energy absorbing member 11 may be made of a material that can be deformed to dissipate collision energy by plastic deformation, so that the buffering capacity of the collision protection assembly can be improved and the performance can be prevented from being excessive. In a preferred embodiment, the first energy absorbing member 11 is helically serpentine along the first direction. So, be favorable to collision protection assembly to dissipate collision energy, improve the buffer capacity.
More specifically, each two adjacent energy-absorbing units 10 are connected in a force-transmitting manner by their respective second energy-absorbing members 12. Referring to fig. 1 again, four second energy absorbing members 12 of each energy absorbing unit 10 are correspondingly connected to one second energy absorbing member 12 of each energy absorbing unit 10.
Specifically, in practical applications, when one energy-absorbing unit 10 or a plurality of energy-absorbing units 10 of the collision protection assembly is impacted, the first energy-absorbing element 11 of the impacted energy-absorbing unit 10 bears the impact force along the first direction and can deform, so as to dissipate the collision energy. Meanwhile, every two adjacent energy-absorbing units 10 are in force transmission connection through at least part of the second energy-absorbing parts 12, the impacted energy-absorbing units 10 can transmit impact force to the adjacent energy-absorbing units 10 through at least part of the second energy-absorbing parts 12, and the impact force is continuously transmitted to other adjacent energy-absorbing units 10 through the second energy-absorbing parts 12 of the energy-absorbing units 10, so that the dissipation and the transmission of collision load are realized, and the local crushing caused by the instability of a protection assembly is avoided. Therefore, the collision protection assembly realizes the dissipation and conduction of collision energy and overcomes the defect that the cab of the flat-head commercial vehicle is poor in collision buffering performance due to insufficient space at the front part of the vehicle body.
In some embodiments, each energy-absorbing unit 10 further comprises at least two third energy-absorbing members 13, each third energy-absorbing member 13 being force-transfer connected between the first energy-absorbing member 11 and each second energy-absorbing member 12.
Specifically, referring to FIG. 1, each energy-absorbing unit 10 further includes four third energy-absorbing members 13. One end of each of the four third energy absorbing pieces 13 is connected to one end of the first energy absorbing piece 11 of the energy absorbing unit 10 where the third energy absorbing piece is located, and the other end of each of the four third energy absorbing pieces 13 is connected to one end, far away from the intersection, of the four second energy absorbing pieces 12 of the energy absorbing unit 10 where the third energy absorbing piece is located. Thus, four triangular structures are formed between one first energy-absorbing member 11, four second energy-absorbing members 12 and four third energy-absorbing members 13.
In particular, in practice, the third energy absorber 13 can cooperate with the first energy absorber 11 to absorb an impact when the crash protection assembly is subjected to an impact force from a first direction. Because the first energy-absorbing piece 11 can support the intersection of all the second energy-absorbing pieces 12 along the first direction, and one end of the third energy-absorbing piece 13 is connected with the second energy-absorbing piece 12, the impacted first energy-absorbing piece 11 and the impacted third energy-absorbing piece 13 transmit the impact force to the second energy-absorbing piece 12.
And because the adjacent two energy absorbing elements are connected with each other through the respective second energy absorbing pieces 12, the second energy absorbing piece 12 of the impacted energy absorbing unit 10 transmits the impact force to the second energy absorbing piece 12 of the adjacent energy absorbing unit 10 connected with the second energy absorbing piece 12. Further, the third energy-absorbing members 13 of adjacent energy-absorbing units 10 can assist the first energy-absorbing member 11 to jointly support the impact force transmitted to the second energy-absorbing member 12.
Similarly, if one energy absorbing unit 10 or a plurality of energy absorbing units 10 receives an impact force in a direction intersecting the first direction, the impact force can be transmitted to the adjacent energy absorbing unit 10. Since the principle of transmission is the same as that described above, it will not be described herein again.
It can be understood from the above that, when an external impact is applied to a certain position of the collision protection assembly, the impact force can be transmitted from the impact energy-absorbing unit 10 to other energy-absorbing units 10 of the collision protection assembly, and even to the whole energy-absorbing module 100, so as to bear the external impact together. Therefore, the impact resistance of the collision protection assembly is improved, and the local crushing of the collision protection assembly is avoided.
In some embodiments, all of the energy-absorbing units 10 are arranged in a matrix and configured to form at least one energy-absorbing layer 20 in the same plane.
Specifically, referring to fig. 1 and 3, each energy absorbing layer 20 includes a plurality of energy absorbing units 10 arranged in a matrix and located in the same plane, so as to better withstand external impact force, thereby improving the impact buffering and impact energy dissipation of the impact protection assembly.
Further, the energy absorbing layer 20 includes at least two layers, and all the energy absorbing layers 20 are stacked in the first direction.
Specifically, referring to fig. 2, three energy absorbing layers 20 are stacked in a first direction. In practical applications, since the three energy-absorbing layers 20 are stacked, when the uppermost energy-absorbing layer 20 receives an external impact force, such as an impact force along a first direction, the uppermost energy-absorbing layer 20 can transmit the impact force to the middle energy-absorbing layer 20, and the middle energy-absorbing layer 20 can transmit the impact force to the lowermost energy-absorbing layer 20. It will be appreciated that when the impact protection assembly is subjected to an external impact, not only the uppermost energy absorbing layer 20 will be subjected to the impact force, but the energy absorbing module 100, which is formed by a plurality of energy absorbing layers 20, will be subjected to the impact force as a whole. Thus, the collision cushioning property of the collision protection assembly is improved, and the collision energy dissipation property is also improved.
Specifically, each first energy absorbing member 11 includes a first connecting end and a second connecting end, which are oppositely arranged along a first direction, the first connecting end is supported at the intersection of all the second energy absorbing members 12 in the energy absorbing unit 10 where the first connecting end is located, and the second connecting end is supported at the intersection of all the second energy absorbing members 12 corresponding to the energy absorbing unit 10 in the energy absorbing layer 20 where the upper layer is located.
More specifically, referring to fig. 1 and fig. 2, when the upper energy-absorbing layer 20 is impacted, the impact energy-absorbing unit 10 on the upper energy-absorbing layer 20 can transmit the impact force to the other energy-absorbing units 10 of the energy-absorbing layer 20 through the second energy-absorbing member 12. Meanwhile, the energy absorbing unit 10 with the impact on the uppermost energy absorbing layer 20 can transmit the impact force to the first energy absorbing member 11 of the middle energy absorbing layer 20 connected with the energy absorbing unit through the second energy absorbing member 12, and further transmit the impact force to other energy absorbing units 10 in the middle layer and the first energy absorbing member 11 of the energy absorbing layer 20 in the lowermost layer, and then sequentially transmit the impact force. Thus, the collision cushioning property of the collision protection assembly is improved, and the collision energy dissipation property is also improved.
In some embodiments, the collision protection assembly further comprises a first cover plate (not shown) and a second cover plate (not shown). The first and second cover plates are used to envelop and secure the energy-absorbing module 100.
In particular, in some embodiments, the first cover panel is disposed adjacent to, and removably attached to, the cab body cowl. For example, the first cover plate may be provided with bolt holes, and the first cover plate may be fixed to the cab-body cowl cross member by bolts. So, be convenient for collision accident take place the back maintenance and change collision protection assembly. The second cover plate is oppositely arranged on the side, far away from the first cover plate, of the first cover plate and is spaced from the first cover plate, and an installation space for enveloping and fixing the energy-absorbing module 100 is formed.
In some embodiments, the first cover plate comprises a carbon fiber cover plate, so that the strength of the first cover plate can be improved, and the weight reduction effect is good, so that the impact resistance of the whole collision protection assembly is improved while the requirement of weight reduction is met. In some embodiments, the second cover plate comprises a carbon fiber cover plate, so that the strength of the second cover plate can be improved, and the light weight is effective, so that the impact resistance of the whole collision protection assembly is improved while the requirement of light weight is met. In other embodiments, the first and second cover plates each comprise a carbon fiber cover plate such that the first and second cover plates cooperate to meet weight reduction requirements without compromising the impact strength of the impact protection assembly as a whole.
It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting. For example, the first and second cover plates may be constructed of other lightweight, high-strength materials without compromising the design requirements of the lightweight, high-strength impact protection assembly.
The energy-absorbing module 100 is mounted and fixed in a mounting space formed between the first and second cover plates, thereby constituting a collision prevention assembly.
Specifically, opposite ends of the energy absorber module 100 in the first direction may be bonded to the first and second cover plates, respectively, by an epoxy glue. It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting.
In some embodiments, the collision protection assembly is manufactured by a 3D printing technology, so as to improve the utilization rate of materials and maximize the energy absorption and buffering.
As the same conception of this application, still provide a commercial car, including locating the lower beam that encloses before the driver's cabin and as above-mentioned collision protection assembly, collision protection assembly detachably connects on the lower beam. So, be convenient for collision accident take place the back maintenance and change impaired collision protection assembly. It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting. For example, the collision protection assembly may also be mounted at the rear and left and right sides of a commercial vehicle.
When the collision protection assembly and the commercial vehicle receive an impact force from a first direction, the third energy absorbing member 13 can cooperate with the first energy absorbing member 11 to receive the impact. Because the first energy-absorbing piece 11 can support the intersection of all the second energy-absorbing pieces 12 along the first direction, and one end of the third energy-absorbing piece 13 is connected with the second energy-absorbing piece 12, the impacted first energy-absorbing piece 11 and the impacted third energy-absorbing piece 13 transmit the impact force to the second energy-absorbing piece 12.
And because the adjacent two energy absorbing elements are connected with each other through the respective second energy absorbing pieces 12, the second energy absorbing piece 12 of the impacted energy absorbing unit 10 transmits the impact force to the second energy absorbing piece 12 of the adjacent energy absorbing unit 10 connected with the second energy absorbing piece 12. Further, the third energy-absorbing members 13 of adjacent energy-absorbing units 10 can assist the first energy-absorbing member 11 to jointly support the impact force transmitted to the second energy-absorbing member 12.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A crash protection assembly, comprising:
the energy absorption module comprises a plurality of energy absorption units, and each energy absorption unit comprises a first energy absorption piece and at least two second energy absorption pieces; one ends of all the second energy-absorbing pieces are arranged in an intersecting manner, and the other ends of the second energy-absorbing pieces radially extend; the first energy-absorbing piece is supported at the intersection of all the second energy-absorbing pieces in a deformable manner along a first direction;
and every two adjacent energy-absorbing units are in force transmission connection through at least part of the second energy-absorbing piece.
2. The crash protection assembly as recited in claim 1, wherein each of said energy absorbing units further comprises at least two third energy absorbing members, each of said third energy absorbing members being force transfer connected between said first energy absorbing member and each of said second energy absorbing members.
3. The crash protection assembly as recited in claim 1, wherein all of said energy absorbing units are arranged in a matrix and configured to form at least one energy absorbing layer lying in a common plane.
4. The crash protection assembly as recited in claim 3, wherein said energy absorbing layer comprises at least two layers, all of said energy absorbing layers being stacked in said first direction.
5. The crash protection assembly according to claim 4, wherein each of said first energy absorbing members comprises a first connecting end and a second connecting end disposed opposite to each other along said first direction, said first connecting end is supported at an intersection of all of said second energy absorbing members of said energy absorbing unit where said first connecting end is located, and said second connecting end is supported at an intersection of all of said second energy absorbing members of said energy absorbing unit corresponding to said energy absorbing unit in said energy absorbing layer where said upper layer is located.
6. The crash protection assembly as recited in claim 1, wherein said first energy absorbing member is helically serpentine along said first direction.
7. The crash protection assembly as recited in claim 1, further comprising first and second cladding sheets, opposite ends of said energy absorption module in said first direction being secured to said first and second cladding sheets, respectively.
8. The crash protection assembly as recited in claim 7, wherein the first cover plate comprises a carbon fiber cover plate; and/or
The second cover plate comprises the carbon fiber cover plate.
9. The crash protection assembly as recited in claim 8, wherein opposite ends of the energy absorber module in the first direction are bonded to the first and second fascia plates, respectively, by an epoxy glue.
10. A commercial vehicle comprising a lower cross member provided in a front wall of a cab and the collision protection assembly according to any one of claims 1 to 9;
the collision protection assembly is detachably connected to the lower cross beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361565.9A CN113978403A (en) | 2021-11-17 | 2021-11-17 | Collision protection assembly and commercial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361565.9A CN113978403A (en) | 2021-11-17 | 2021-11-17 | Collision protection assembly and commercial vehicle |
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| CN113978403A true CN113978403A (en) | 2022-01-28 |
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| CN202111361565.9A Pending CN113978403A (en) | 2021-11-17 | 2021-11-17 | Collision protection assembly and commercial vehicle |
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