KR100811293B1 - Pre-heater mounted with cover for vehicle - Google Patents

Abstract

The present invention relates to a cover-mounted vehicle preheater comprising: a (+) terminal and a (-) terminal extending in a longitudinal direction, a heat fin assembly interposed between the (+) terminal and a (-) terminal, and one side thereof A PTC element which contacts the (+) terminal and the opposite side thereof is in contact with the heat fin assembly connected to the (-) terminal, and the (+) terminal, the (-) terminal, the heat pin assembly and the PTC element are accommodated together. And a connecting housing coupled to an end of the cover, wherein the cover includes an insulated rib protruding inwardly from an inner surface thereof. The cover is disposed between neighboring PTC elements, the cover is configured such that the upper cover and the lower cover is hooked to each other at the flange formed along the circumference, the upper cover and the lower Since the housing for connecting the terminal and the power supply is hooked to one end thereof in the state of covering the secondary cover, a short occurs due to the (+) terminal being in electrical contact with the surrounding structure such as a heat pin assembly. Due to this, damage can be prevented, and the cover and the connection housing are directly coupled by the hooks, so there is an advantage in that the assembly is easy and the bonding strength is large.

Vehicle, Preheater, Cover, Terminal, PTC Element, Hook

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 an exploded perspective view illustrating a coupling structure of the upper cover and the lower cover in FIG. 4.

7 is a perspective view and an exploded perspective view showing a coupling structure of the connection housing and the cover in FIG.

8 shows an internal coupling structure of the front portion of the vehicle preheater according to the present invention, where (a) is a perspective view and (b) is a plan view.

Fig. 9 shows the internal coupling 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.

Figure 10 shows the internal coupling structure of the intermediate portion of the vehicle preheater according to the present invention, (a) is a perspective view, (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 (-) terminal 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. Frames 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. It is configured to include a housing (400, 800) for coupling the combination of the two ends at each other.

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 an inner surface of the upper flange of the lower heat rod 110, and the upper flange of the lower heat rod 150 is bent by swaging the top of the flange.

However, in such a conventional vehicle preheater, both ends of the heat rod assembly 100, the heat fin assembly 200, and the negative terminal 300 are coupled to each other in the housing 400 and 800. Since the final assembly work with the housing is cumbersome and the assembly strength is also somewhat reduced.

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.

However, in such a conventional cover-coupled electric heating device, short circuit occurs due to the fact that the PTC element is thin and the terminals and the heat pin plates arranged at intervals on both sides of the PTC element are deformed by external force or heat to contact each other. There was this.

In addition, according to the conventional cover-coupled electric heating device, since the coupling configuration of the connection housing and the cover is made by separate elastic elements of weak strength, the assembly strength is very weak at this portion. .

In addition, according to the conventional cover-coupled electric heating apparatus, there is a case where a failure occurs due to the lack of assembly strength to ensure the longitudinal movement of the heat fin assembly and the terminals.

The present invention has been made to solve the above problems, and an object of the present invention is that a short is not generated because the terminals and the heat pin plates arranged at intervals on both sides of a relatively thin PTC element are deformed by external force or heat and contact each other. It is to provide a cover-mounted vehicle preheater that can prevent the failure and maintain the original life.

In addition, another object of the present invention is to provide a cover-mounted vehicle preheater having increased durability by increasing the coupling strength between the connection housing and the cover.

It is still another object of the present invention to provide a cover-mounted vehicle preheater which can reduce the failure by reliably preventing the longitudinal movement of the heat pin assembly and the terminals with respect to the cover, thereby preventing the component from falling off.

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,

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The cover has a configuration in which the upper cover and the lower cover are hooked to each other at a flange formed along the circumference thereof, and a connecting housing for connecting the terminal and the power supply to one end thereof in the state where the upper cover and the lower cover are folded is hooked. It is characterized by being coupled.

In addition, the cover-mounted vehicle preheater according to the present invention, the (+) terminal and (-) terminal extending in the longitudinal direction, the heat fin assembly interposed between the (+) terminal and (-) terminal, and one surface Is in contact with the (+) terminal and the opposite side of the PTC device in contact with the heat pin assembly connected to the (-) terminal, and the (+) terminal, (-) terminal, the heat pin assembly and the PTC element together It comprises a cover having a vent hole formed on the surface, and a connecting housing coupled to the end of the cover,

An inner side of the cover is formed with an insulating rib projecting inward from the inner surface, the coupling rib is disposed between the adjacent PTC element in the longitudinal direction, the cover is the upper cover and the lower cover along the circumference It is configured to be hooked to each other in the formed flange, characterized in that the connection housing for connecting the terminal and the power supply to one end thereof in a state that the upper cover and the lower cover is folded.

Here, it is preferable that the movement preventing ribs protruding inward from the inner surface are respectively formed in front and rear of the cover to prevent the terminals and the heat pin assembly from moving in the longitudinal direction with respect to the cover.

In this case, the anti-moving ribs located in front of the anti-moving ribs are disposed between the front end portion of the heat fin assembly and the bent portion of the terminal, and the anti-moving ribs located at the rear side are disposed at the rear end of the heat fin assembly. It is preferable to arrange | position between the stepped parts of a terminal.

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 surface 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.

In addition, the PTC device 140 and the (+) terminal 130 may be attached by an adhesive or the like.

Next, an insulator 370 made of an insulating tape or an insulating plate is disposed on one surface of the (-) terminal 300 to insulate the adjacent heat fin assembly 200, and the elastic piece 330 protrudes from the opposite surface thereof. Formed.

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.

Only one insulator 370 may be disposed in one (-) terminal 300 of two (-) terminals 300 without an elastic piece.

However, since the present invention relates to a coupling structure formed inside the cover 700, the present invention can also be applied to general (-) terminals without elastic pieces.

Meanwhile, the heat fin assembly 200 has a configuration in which a corrugate pin 210 is fixedly fixed to a pin plate 220 in a longitudinal direction, and the pin plate 220 is formed in the pin plate 220. The bottom of the corrugated fin 210 and both ends in the longitudinal direction and the side portion of the longitudinal direction is configured to surround. Accordingly, the heat fin assembly 200 is more firmly assembled.

As shown in FIG. 6, 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.

As shown in FIG. 7, after the cover 700 is coupled, a connection housing 400 for connecting the terminals 130 and 300 to a power supply unit (not shown) is coupled to one end thereof. Even in this case, the hook 440 enables easy and robust coupling.

In addition, the inside of the cover 700 is formed with an insulating rib 770 protruding inward from the inner surface, the rib 770 is disposed between the adjacent PTC element 140 along the longitudinal direction during assembly The positive terminal 130 is in electrical contact with a peripheral structure such as the heat fin assembly 200 to prevent a short from occurring.

In addition, to prevent the terminals 130 and 300 and the heat fin assembly 200 from moving in the longitudinal direction, the movement preventing ribs 760 protruding inward from the inner surface of the cover 700 may be provided. Each is formed.

In particular, as shown in FIGS. 8 and 9, 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 the heat fin. Since the rear end of the assembly 200 and the stepped portion S of the terminals 300 and 130 are disposed, longitudinal movement of the heat fin assembly 200 and the terminal can be prevented.

In the drawing, the movement preventing rib 760 is formed on the lower cover 720, but may be formed on the upper cover 710, or may be formed on both.

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 insulating rib is disposed between the neighboring PTC elements along the longitudinal direction, a short occurs due to the electrical contact between the positive terminal and the surrounding structure such as the heat fin assembly. There is an advantage that damage can be prevented.

In addition, according to the present invention, since the cover and the connection housing are directly coupled by the hook, there is also an advantage that the assembly is easy and the coupling strength is large.

In addition, according to the present invention, the movement preventing ribs protruding inward from the inner surface of the front and rear of the cover can be disposed to prevent failures such as detachment of parts.

Claims (5)

delete (+) 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 cover has a configuration in which the upper cover and the lower cover are hooked to each other in a flange formed along the circumference thereof, The cover-coupled vehicle preheater, characterized in that the hook is coupled to the connecting housing for connecting the terminal and the power supply to one end thereof in the state that the upper cover and the lower cover are folded. (+) 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, Insulating ribs are formed inside the cover to protrude inwardly from an inner surface, so that when insulated, the insulating ribs are disposed between neighboring PTC elements along the longitudinal direction. The cover has a configuration in which the upper cover and the lower cover are hooked to each other in a flange formed along the circumference thereof, The cover-coupled vehicle preheater, characterized in that the hook is coupled to the connecting housing for connecting the terminal and the power supply to one end thereof in the state that the upper cover and the lower cover are folded. The method according to claim 2 or 3, Cover-mounted vehicle preheater, characterized in that the movement preventing ribs protruding inward from the inner surface is formed in the front and rear of the cover to prevent the terminals and the heat pin assembly to move in the longitudinal direction with respect to the cover . The method of claim 4, wherein An anti-moving rib positioned in front of the anti-moving rib is disposed between the front end portion of the heat fin assembly and the bent portion of the terminal, and the anti-moving rib positioned at the rear portion of the anti-moving rib is disposed at the rear end of the heat fin assembly and the terminal. A cover-mounted vehicle preheater, which is disposed between the steps.

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