KR100759580B1 - Pre-heater mounted with cover for vehicle - Google Patents

Abstract

A pre-heater mounted with a cover for a vehicle is provided to improving assembling and bonding strength by simplifying connection between PTC element and terminal and to enhance bonding strength of the entire system by strongly combining a heat fin assembly. A pre-heater mounted with cover for vehicle comprises a heat fin assembly, a PTC element, a plus(+) and minus(-) terminals extended in the length direction, a cover, and a connection housing(400). The heat fin assembly is interposed between the plus(+) and minus(-) terminals. One side of the PCT element is connected to the plus terminal and is connected with the heat fin assembly connected with the other side of the PCT element. The cover includes the plus(+) and minus(-) terminal, heat fin assembly and PCT element, and includes a ventilation hole formed on its surface. The connection housing is connected to an end of the cover. Two or more connection pieces projected from the one surface of the plus(+) terminal are inserted into the of circumference of the PTC element.

Description

Cover-mounted car preheater {PRE-HEATER MOUNTED WITH COVER FOR VEHICLE}

1 is a perspective view showing the structure of a general vehicle preheater.

2 is an exploded perspective view of FIG. 1.

3A is a perspective view showing a conventional heat rod assembly structure.

3B is an exploded perspective view of FIG. 3A.

3C is a cross-sectional view of FIG. 3A.

4 is a perspective view showing the structure of a vehicle preheater according to the present invention.

5 is an exploded perspective view of FIG. 4.

FIG. 6 is a perspective view illustrating a coupling structure of the PTC element and the (+) terminal in FIG. 5.

FIG. 7 is a view showing a coupling structure of the heat fin assembly in FIG. 5, (a) is a perspective view, and (b) is an exploded perspective view.

FIG. 8 is a perspective view illustrating the structure of the negative terminal in FIG. 5.

Fig. 9 shows the internal detailed structure of the front part of the vehicle preheater according to the present invention, where (a) is a perspective view and (b) is a plan view.

Fig. 10 shows the internal detailed structure of the rear part of the vehicle preheater according to the present invention, where (a) is a perspective view and (b) is a plan view.

※ Explanation of Major Drawings

130 ... (+) terminal

135 ... Joining Piece

140. PTC device

200 ... heat fin assembly

300 ... (-) terminal

330 ... elastic piece

400 ... connection housing

700 ... cover

710 ... top cover

720 ... lower cover

730 ... hook

740. Hang hole

750 ... vent hole

760 ... anti-moving rib

770 ... Insulated rib

780 ... Home

1000 ... Car Preheater

The present invention relates to a cover-mounted vehicle preheater, and more particularly, to a cover-mounted vehicle preheater that preheats air in a vehicle interior by using heat generated by a PTC element.

In a typical vehicle, a heating apparatus is installed that uses heat energy of cooling water heated by heat generated by an engine for heating indoors, dehumidifying or defrosting the windshield of the vehicle.

Such a heating device has a long time until the cooling water is heated and the room is heated since the cooling water flowing around the engine flows into the heater after the engine is started. Accordingly, there has been a disadvantage in that the cold state for a certain time after starting.

Recently, various types of pre-heaters have been developed to solve such problems, and a representative structure thereof is disclosed in Korean Patent Publication No. 0445722 (registered owner: Woori Industry Co., Ltd.). Referring to the accompanying drawings 1 to 3 will be described in detail the conventional structure as follows.

As shown, a typical vehicle preheater 1000 may include a heat rod assembly 100 including a PTC element and a heat fin assembly 200 arranged side by side on both sides of the heat rod assembly 100. And (-) terminals 300 arranged side by side with the heat fin assembly 200, and both side ends of the combination of the heat rod assembly 100, the heat fin assembly 200, and the (-) terminal 300 ( The frame 600 and 900 coupled to each other, and the heat rod assembly 100, the heat fin assembly 200, the negative terminal 300, and the frame 600 and 900, respectively. It is comprised including the housing 400 and 800 which couple | bond together with each other at the both ends of a coupling body.

3 illustrates an example of the heat rod assembly 100 in the preheater 1000 using a positive temperature coefficient (PTC) device.

First, the lower heat rod 110 is configured as a channel to serve as a kind of receiving portion.

The insulator 120 is disposed at the bottom of the lower heat rod 110 to prevent a short. The insulator 120 is made of a material having a good non-conductor property and thermal conductivity, such as NYLON material.

In addition, the (+) terminal 130 made of carbon steel in the longitudinal direction is fixedly coupled on the insulator 120. To this end, a groove 127 is formed in the bottom of the insulator 120 to accommodate a relatively thin (+) terminal 130.

In addition, the PTC element 140 generated by the power supply is coupled onto the insulator 120 via the (+) terminal. To this end, the step groove 124 is formed on the side of the bottom groove 125 of the insulator 120.

Finally, the opening of the lower heat rod 110 is closed by the upper heat rod 150. To this end, a jaw is formed on the inner surface of the upper flange of the lower heat rod 110, and the upper end of the flange is swung (swaged) while the upper heat rod 150 is placed on the jaw.

However, in the conventional vehicle preheater, both ends of the heat rod assembly 100, the heat fin assembly 200, and the negative terminal 300 are coupled to the housing 400 and 800 in a state in which they are coupled side by side. Since the heat rod assembly 100, the heat fin assembly 200, and the (-) terminal 300 are aligned by the width of the housings 400 and 800, the housings 400 and 800 are fitted to both sides of these parts, respectively. Alternatively, the components such as the heat rod assembly 100 and the heat fin assembly 200 are fixed to the fastening means 500 in the form of interference fit, and then the housing is assembled, so that final assembly work with the housing is cumbersome and the assembly strength is somewhat increased. There was a problem falling.

Furthermore, since the heat generating part was exposed as it is, the terminal, the heat pin assembly, and the like were damaged by external load, and the peripheral parts were sometimes deformed by the heat generating part.

In order to solve this problem, the configuration of the cover-coupled electric heating device is disclosed in Korea Patent Publication No. 2005-0026980.
The above conventional electric heating apparatus includes a housing having openings on an extended housing face and a layered structure including at least one PTC element, a heat dissipation element, first and second contact sheets for power supply, and a resilient element. The PTC element is arranged between the first and second contact sheets, and the layered structure is configured to be clamped to the housing by the resilient element, and the first contact sheet is lacquered on the side facing the PTC element. A layer is provided and the space between the PTC element and the first contact sheet is sealed with a compressed lacquer outside the space.

However, since the conventional cover-coupled electric heating apparatus attaches the PTC element to the contact sheet using a lacquer or lacquer layer, it is necessary to use a manual worker's hand or a separate jig to attach the PTC element to the contact sheet. However, it is difficult to attach the PTC devices at regular intervals, and the PTC devices have to be kept pressed at a constant pressure until the liquid lacquer layer is formed, so that the assembly work for the alignment of the PTC devices is somewhat complicated.

In addition, according to the conventional cover-coupled electric heating device, the heat fin assembly has a disadvantage that the assembly strength is very weak because the corrugated heat fin is simply coupled to the bottom of the plate.

In addition, according to the conventional cover-coupled electric heating device, since the separate resilient elements are disposed on both sides there was a disadvantage that the assembly is cumbersome because of the large number of parts.

The present invention has been made to solve the above problems, an object of the invention to simplify the coupling between the PTC element and the terminal to provide a cover-mounted vehicle pre-heater that can facilitate the assembly work and increase the coupling strength. have.

In addition, another object of the present invention is to provide a cover-mounted vehicle preheater that makes the coupling structure of the heat fin assembly rigid to increase the overall coupling strength.

Further, another object of the present invention is to provide a cover-mounted vehicle preheater capable of forming an elastic piece on the terminal itself to make the assembly more compact and robust.

In order to achieve the above object, the cover-mounted vehicle preheater according to the present invention, the (+) terminal and (-) terminal extending in the longitudinal direction, interposed between the (+) terminal and (-) terminal A PTC element which is in contact with the heat fin assembly, one side of which is in contact with the (+) terminal and the other side of which is in contact with the heat fin assembly connected to the (-) terminal, the (+) terminal, (-) terminal, the heat pin assembly and Comprising a cover containing the PTC element and the ventilation hole is formed on the surface and a connecting housing coupled to the end of the cover,

The periphery of the PTC device is characterized by being fitted by two or more coupling pieces protruding from one surface of the (+) terminal.

Here, the coupling piece is composed of four facing each other, it is preferable that the (+) terminal is formed by partially cutting and bending.

In addition, it is preferable that an insulator is arranged on one surface of the (-) terminal, and an elastic piece protrudes on the opposite surface thereof.

In addition, the elastic piece is preferably formed by bending after cutting a portion of the (-) terminal.

In addition, the heat fin assembly has a configuration in which a corrugate pin is fixedly coupled to a pin plate in a longitudinal direction, and the pin plate has a lower end, a longitudinal both ends and a longitudinal direction of the corrugate pin. It is preferable to have a structure which wraps the side part of both ends.

Hereinafter, a preferred embodiment of the cover-mounted vehicle preheater according to the present invention will be described in detail with reference to FIGS. 4 to 10.

As shown in Figure 4 and 5, the cover-mounted vehicle preheater 1000 according to the present invention, the (+) terminal 130 and (-) terminal 300 extending in the longitudinal direction, and ( The heat fin assembly 200 and the PTC element 140 interposed between the terminal 130 and the (-) terminal 300 and the ventilation holes 750 are formed on the surface of the heat fin assembly 200 and the PTC element 140. The cover 700 and the connection housing 400 coupled to the end of the cover 700 is composed of.

First, the PTC element 140 is formed in a quadrangular plate shape, one surface of which is in contact with the (+) terminal 130 and the other side of which is connected to the (-) terminal 300. Contact with pin assembly 200. Here, the PTC element 140 may have various shapes such as an ellipse or other polygons.

Accordingly, the heat fin assembly 200 and the PTC device 140 are continuously interposed between the (+) terminal 130 and the (-) terminal 300 as a whole, or only the heat pin assembly 200 is interposed. It is.

Looking at the coupling structure of the PTC device 140 and the (+) terminal 130, two or more coupling pieces 135 protruding from one surface of the (+) terminal 130 around the PTC device 140 This configuration is fitted.

Specifically, the coupling piece 135 consists of four facing each other, is formed by partially bending the (+) terminal 130 and then bent vertically by the cut portion. In particular, the pair of coupling pieces 135 are formed by cutting both sides of the (+) terminal 130 and then bending them.

To this end, the PTC device 140 is placed on the partially cut (+) terminal 130, and the coupling element 135 is brought into close contact with the PTC device 140 by bending by pressing. 140 is firmly coupled by the coupling piece 135.

However, the number and type of the coupling pieces 135 do not necessarily have to be described in the drawings, and more than four of them may be formed by cutting away from the inside.

Next, as shown in FIG. 8, an insulator 370 made of an insulating tape or an insulating plate is disposed on one surface of the (-) terminal 300, and is insulated from the adjacent heat fin assembly 200. The elastic piece 330 is formed to protrude.

Specifically, the elastic piece 330 is formed by cutting a portion of the (-) terminal 300 and then bending. The bent angle before assembly is preferably about 5 to 20 degrees.

When the (-) terminal 300 formed with the elastic piece 330 is coupled together with the surrounding heat fin assembly 200, the elastic pieces 330 are deformed, and the side surfaces are closely attached to each other, thereby making it more rigid. Assembly is possible.

One (-) terminal 300 of the two (-) terminal 300 may have only the insulator 370 without the elastic piece.

Meanwhile, as shown in FIG. 7, the heat fin assembly 200 has a configuration in which a corrugate pin 210 is fixedly coupled to a pin plate 220 in a longitudinal direction. The pin plate 220 has a structure surrounding the bottom of the corrugated fin 210, both ends in the longitudinal direction, and sides of the both ends in the longitudinal direction. Accordingly, the heat fin assembly 200 is more firmly assembled.

As shown in FIG. 2, the cover 700 is configured such that the upper cover 710 and the lower cover 720 are hooked around the cover. That is, the hook 730 and the locking hole 740 complementary to the flange formed around the upper cover 710 and the lower cover 720 are formed, respectively, so that the upper cover 710 and the lower cover 720 are superimposed. If you do so, one-touch coupling to each other.

The cover 700 can be easily made by a conventional plastic injection method.

After the coupling of the cover 700 is completed, a housing 400 for connecting the terminals 130 and 300 to a power supply unit (not shown) is coupled to one end thereof. In this case also, the hook 440 enables a firm coupling.

In order to prevent the terminals 130 and 300 and the heat fin assembly 200 from moving in the longitudinal direction, the movement preventing rib 760 protruding inwardly from one inner surface of the cover 700 inwards and outwards. Are each formed, so that both ends of the heat fin assembly 200 can be prevented from moving back and forth. As shown in the figure, the front anti-moving rib 760 is disposed between the front end of the heat fin assembly 200 and the bent portion of the terminal, and the rear anti-moving rib is connected to the rear end of the heat fin assembly 200. Since it is arrange | positioned between the stepped parts of a terminal, the longitudinal movement of a heat fin assembly and a terminal can be prevented.

In addition, an inner side of the cover 700 is formed with an insulating rib 770 protruding inward from one inner surface, the positive terminal 130 is disposed between the adjacent PTC element 140 when being coupled Electrical contact with the surrounding structure is prevented.

In addition, the cover 700 is formed with a guide groove 780 for fitting while guiding the (+) terminal 130 and the (-) terminal 300.

According to the present invention having the above-described configuration, since the PTC element is firmly fitted by the coupling piece formed on the (+) terminal, there is an effect that the assembly work is easy and the assembly strength is large.

Further, according to the present invention, there is an advantage that the coupling structure of the heat fin assembly is firm and the overall bonding strength is high.

In addition, according to the present invention, it is possible to increase the assembly strength by forming an elastic piece on the (-) terminal itself to elastically configure the coupling with the heat fin assembly.

Claims (5)

(+) Terminal and (-) terminal extending in the longitudinal direction, the heat fin assembly interposed between the (+) terminal and (-) terminal, one side is in contact with the (+) terminal and the other side ( A PTC element in contact with the heat fin assembly connected to the terminal, a cover accommodating the (+) terminal, (-) terminal, the heat fin assembly and the PTC element together with a vent hole formed on a surface thereof, In the cover-mounted vehicle preheater comprising a connection housing coupled to the end, The circumference of the PTC element is a vehicle pre-heater, characterized in that sandwiched by two or more engaging pieces protruding from one surface of the (+) terminal. The method of claim 1, The coupling piece is composed of four facing each other, the vehicle pre-heater, characterized in that formed by bending the (+) terminal by partially cutting. The method of claim 2, An insulator is disposed on one surface of the negative terminal, and an elastic piece protrudes on the opposite surface thereof. The method of claim 3, The elastic piece is a vehicle pre-heater, characterized in that formed by bending after cutting a portion of the (-) terminal. The method according to any one of claims 1 to 4, The heat fin assembly has a configuration in which a corrugate pin is fixedly coupled to a pin plate in a longitudinal direction, and the pin plate has a lower end, a longitudinal both ends, and a longitudinal both ends of the corrugated pin. A vehicle preheater characterized in that the structure surrounding the side.

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