KR100628436B1 - Ptc rod assembly and pre-heater including the same - Google Patents

Abstract

The present invention, the lower PTC rod formed in the channel shape; A plurality of contact plates formed such that a pair of through holes are spaced apart at regular intervals in the longitudinal direction; A pair of longitudinal connecting members coupled to both longitudinal ends of the contact plate, a first support provided on one side of the contact plate to connect the pair of through holes, and a through hole adjacent from each of the longitudinal connecting members. An insulator including a pair of second supports extending to cover the other side of the contact plate and connected to the first support through the through holes; A PTC element coupled between the first support to contact the contact plate, a heat transfer block coupled between the second support to contact the contact plate, and an upper PTC rod coupled to cover the opening of the lower PTC rod. It is configured to provide a PTC rod assembly and a vehicle preheater including the same, the bonding force between the contact plate and the insulator is strengthened and easy to form a support for fixing the PTC element or the insulating plate.

Preheater, PTC element, Insulator, Injection, Through hole

Description

PTC rod assembly and pre-heater including the same}

1 is a perspective view of a contact plate and an insulator applied to a conventional PC element accommodating device.

2 is a cross-sectional view of a conventional PC element receiving device.

3 is an exploded perspective view of the PTC rod assembly according to the present invention.

4 to 6 are perspective views sequentially illustrating a terminal manufacturing process of the contact plate included in the PTC rod assembly according to the present invention.

7 is a perspective view of one side of the contact plate and the insulator included in the PTC rod assembly according to the present invention.

8 is another perspective view of a contact plate and an insulator included in the PTC rod assembly according to the present invention.

9 is a cross-sectional view of the contact plate and the insulator cut along the line A-A shown in FIG.

FIG. 10 is a cross-sectional view of the contact plate and the insulator cut along the line B-B shown in FIG. 7.

11 is an exploded perspective view of a contact plate and an insulator according to another embodiment.

12 is an exploded perspective view of a vehicle preheater according to the present invention.

13 to 15 are exploded views illustrating coupling positions of the PTC element and the heating block in each PTC rod assembly included in the vehicle preheater according to the present invention.

16 is a coupling diagram of the first housing and the PTC rod assembly included in the vehicle preheater according to the present invention.

17 is a sectional perspective view of a housing applied to a preheater according to the present invention.

18 is a cross-sectional view of the housing illustrating the coupling structure of the housing terminals.

<Description of the symbols for the main parts of the drawings>

100: lower PTC rod 200: contact plate

210: terminal 300: insulator

320: first support 330: second support

400: PTC element 500: electric heat block

600: upper PTC rod

The present invention relates to a PTC rod assembly and a vehicle preheater including the same, and more particularly, the coupling force between the contact plate and the insulator is improved, and the coupling position of the PTC element and the heating block can be made clear. A PTC rod assembly; The heat generated from the PTC element can be evenly transmitted only to the heat dissipation fin assembly without escaping to the outside, and relates to a vehicle preheater configured to improve adhesion between the PTC rod assembly and the heat dissipation fin assembly.

A general vehicle is provided with a heating device that uses the heat energy of the cooling water warmed by the heat generated by the engine, for indoor heating, dehumidification or defrosting of the windshield of the vehicle.

Such a heating apparatus 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 is a problem that after starting, it should be in a cold state for a certain time.

In order to solve this problem, a 'heat rod assembly and a vehicle preheater including the same' (application number 10-2005-0031176) for accommodating ceramic heating elements such as PTC (Positive Temperature Coefficient) devices have been proposed. have.

Hereinafter, this structure will be briefly described with reference to the accompanying drawings.

In order to solve this problem, an apparatus for accommodating a ceramic heating element such as a PTC (Positive Temperature Coefficient) device has been disclosed in Korean Patent Laid-Open No. 10-2004-0089570.

Hereinafter, the structure of the related art will be briefly described with reference to the accompanying drawings.

1 is a perspective view of a contact plate and an insulator applied to a conventional PC element receiving apparatus, and FIG. 2 is a cross-sectional view of a conventional PC element receiving apparatus.

As shown in FIGS. 1 and 2, a conventional PC element accommodating device includes an insulator 1 made of an electrically insulating material and a contact plate 2 coupled to be inserted into the insulator 1. It is configured to include.

The insulator 1 has a recess 3 on which the PC element 8 is to be brought into contact with the contact plate 2, and a brace 1.1 is formed at both ends in the longitudinal direction, and the brace 1.1. A groove 1.2 is formed in the inner surface in the longitudinal direction, and the terminal lug 2.1 side of the contact plate 2 is completely covered by the insulator coating 1.3. The braces 1.1 are connected by crossbars 1.4 arranged in parallel to be spaced apart at regular intervals in the longitudinal direction, and a plurality of studs 4 are provided on the inner surfaces of the braces 1.1 and the crossbars 1.4. The stud 4 is crimped to the side of the Pc element 8 when the Pc element 8 is seated in the recess 3 to fix the Pc element 8. The insulator 1 has a hook 5 protruding laterally on the opposite side of the insulator coating 1.3 so that it can be fixed to the heating device, and is introduced into the profile tube 10.

An insulating strip 9 is coupled to the opposite surface to which the PC element 8 is contacted to prevent contact between the contact plate 2 and the profile tube 10.

However, in the conventional PC element accommodating device having the above structure, since the insulator 1 and the contact plate 3 are coupled to each other by frictional force, the coupling between the insulator 1 and the contact plate 3 can be released. There is a concern, there is a disadvantage that a failure may occur due to the dust or other foreign matter is introduced between the insulator (1) and the profile tube (10).

In addition, the conventional PC element receiving device as described above also has a problem in that it does not evenly transfer heat since the PTC element 8 may be coupled to only one side of the contact plate 3.

The present invention has been made in order to solve the above problems, the contact plate and the insulator is integrally coupled through a double injection process, the PTI rod assembly is configured to facilitate the formation of the support for fixing the PTC element or the insulating plate The purpose is to provide.

PTC rod assembly according to the present invention for solving the above problems, and a plurality of contact plate is formed so that a plurality of through-holes spaced at regular intervals in the longitudinal direction; A pair of longitudinal connecting members coupled to both longitudinal ends of the contact plate, a first support provided on one side of the contact plate to connect the pair of through holes, and a through hole adjacent from each of the longitudinal connecting members. An insulator including a pair of second supports extending to cover the other side of the contact plate and connected to the first support through the through holes; It is configured to include a PTC element and the heat transfer block coupled to the contact plate between the different first support or between the second pair of different support.

The insulator has a front end enlargement portion and a rear end enlargement portion, each of which has a cross sectional area enlarged at the front end and the rear end, and the front end enlargement part is formed in an open shape to expose one side surface of the contact plate.

In this case, the contact plate has a fastener formed at a portion corresponding to the tip enlargement portion, and the end enlarged portion has a fixing protrusion penetrating the fixture at a portion corresponding to the fastener.

The insulator may be manufactured integrally with the contact plate through a double injection process, or may be configured such that the first support and the second support are coupled to the contact plate in a detachable structure.

The longitudinal connecting member is formed stepwise so that the width of the portion where the PTC element is seated and the width of the portion where the heat transfer block is seated are different from each other. In this case, it is preferable that the width of the portion where the PTC element is seated is wider than the width of the portion where the heat transfer block is seated.

The contact plate protrudes outward from the tip enlargement portion to form a terminal that is bent in a step shape. At this time, the terminal may be formed by folding the end of the contact plate is folded in two layers.

The vehicle preheater according to the present invention includes a lower PTC rod formed in a channel shape, a contact plate and an insulator configured in the above-described configuration and introduced into the lower PTC rod, and a first support to be in contact with the contact plate. A plurality of PTIs arranged in parallel, including a PTC element coupled thereto, a heat transfer block coupled between the second support to contact the contact plate, and an upper PTC rod coupled to cover the opening of the lower PTC rod A seed rod assembly; One or more heat sink fin assemblies coupled to both sides of the PTC rod assembly; A pair of frames each coupled to an outer side surface of an outermost heat sink fin assembly; First and second housings coupled to both ends of the combination of the PTC rod assembly, the heat dissipation fin assembly, and the frame; It is configured to include a housing terminal coupled to the inside of the housing to serve as a negative electrode terminal.

The outermost located PTC rod assembly is mounted on the inward facing surface, wherein the at least one PTC rod assembly is mounted on both sides of the PTC element and the heat transfer block.

In the PTC rod assembly, a larger number of the heat dissipation fin assemblies are stacked on the side where the PTC element is mounted than on the side where the PTC element is not mounted.

The frame has a reinforcing groove which is formed to extend in the longitudinal direction of the contact surface with the heat dissipation fin assembly, and is provided on the surface in contact with the heat dissipation fin assembly, and the interruption of the surface contacting the heat dissipation fin assembly is projected toward the heat dissipation fin assembly.

The housing terminal is provided with a bending plate in contact with one end of the PTC rod.

Hereinafter, an embodiment of a PTC rod assembly and a vehicle preheater including the same according to the present invention will be described with reference to the accompanying drawings.

3 is an exploded perspective view of the PTC rod assembly according to the present invention, and FIGS. 4 to 6 are perspective views sequentially illustrating a terminal manufacturing process of the contact plate included in the PTC rod assembly according to the present invention.

3 to 6, the PTC rod assembly 1000 according to the present invention includes a lower PTC rod 100 formed in a channel shape; A pair of through holes 210 are formed in plural so as to be spaced apart at regular intervals in the longitudinal direction, and are located in the lower PTC rod 100; A first support stand provided on one side of the contact plate 200 to connect the pair of longitudinal connecting members 310 coupled to both longitudinal ends of the contact plate 200 and the pair of through holes 210. And a first support stand 320 provided through the through hole 210 by extending from the pair of longitudinal connecting members 310 to the adjacent through hole 210, respectively, on the other side of the contact plate 200. An insulator 300 having a pair of second supports 330 connected thereto; A PTC element 400 coupled between different first supports 320 to be in contact with one side of the contact plate 200; A heat transfer block 500 coupled between the second support 330 to be in contact with the other side of the contact plate 200; It is configured to include an upper PTC rod 600 is coupled to cover the opening of the lower PTC rod 100.

The insulator 300 is for preventing the contact plate 200 from contacting the PTC rods 100 and 600. The coupling structure of the contact plate 200 and the insulator 300 is illustrated in FIGS. 7 to 10. This will be described later separately with reference.

In addition, the front end and the rear end of the insulator 300, the inner surface is in close contact with the end outer surface of the PTC rods (100, 600) and the tip expansion portion 340 for guiding the engagement position of the PTC rods (100, 600); The rear end enlargement part 350 is formed, respectively.

The tip expanding portion 340 is formed in an open shape so that one side surface of the contact plate 200 is exposed. In this case, the contact plate 200 has a fixture 220 formed at a portion corresponding to the tip enlargement portion 340, and the tip enlargement portion 340 is fixed to penetrate the fixture 220 at a portion corresponding to the fixture 220. A protrusion 342 is formed, such that the fixing protrusion 342 is coupled to the fixture 220 so that the tip expanding portion 340 and the contact plate 200 are coupled to each other.

The rear end enlarged part 350 has a cross section having the same shape as the cross sections of the PTC rods 100 and 600. Accordingly, since the rear ends of the upper PTC rod 600 and the lower PTC rod 100 are sealed by the rear end enlarger 350, dust or other foreign matter is introduced from the rear of the PTC rod assembly 1000, thereby causing the PTI C element to be inserted. Fire generated by contacting 400 is prevented.

The contact plate 200 is formed with a terminal 230 protruding to the outside of the tip enlargement portion 340. In this case, the terminal 230 may be formed to be bent in a step shape. The end of the contact plate 200 on the side where the terminal 230 is formed is formed wider than the suspension, and both ends are folded in half and overlapped in two layers. The terminal 230 formed as described above has a strength that is greater because the thickness is twice the interruption of the contact plate 200, and thus, the terminal 230 may be more stably coupled to the connector or the housing for the current transmission.

7 is a perspective view of one side of the contact plate and the insulator included in the PTC rod assembly according to the present invention, Figure 8 is a perspective view of the other side of the contact plate and the insulator included in the PTC rod assembly according to the present invention, Figure 9 7 is a cross-sectional view of the contact plate and the insulator cut along the line AA shown in FIG. 7, and FIG. 10 is a cross-sectional view of the contact plate and the insulator cut along the line BB shown in FIG. 7.

As shown in Figure 7 to 10, the insulator 300 applied to the present invention is coupled to the contact plate 200 in an injection method, and the first support 320 is coupled to one side of the contact plate 200 and The second support 330 coupled to the other side of the contact plate 200 is connected through the through hole 210 formed in the contact plate 200.

Therefore, the insulator 300 applied to the present invention does not release the coupling with the contact plate 200 unless the portion penetrating the through hole 210 is damaged. In addition, since the first support 320 and the pair of second supports 330 are connected to each other through a pair of through holes 210, injection of an injection product is easy, and provided in the conventional insulator 300 and 20. Compared with the support 28a, the length is short, so that the injection molding can be precisely performed.

In this case, the first support 320 may be formed to be connected to only a pair of through holes 210, that is, to be separated from the longitudinal connection member 310 so as to be more easily injected. In addition, the second support 330 may be provided in one long to connect the pair of longitudinal connection member 310.

In addition, the longitudinal connection member 310, the exposure width of both sides of the contact plate 200 is different, that is, the PTC element 400 so that the coupling position of the PTC element 400 and the heat transfer block 500 does not change with each other. And the heat block 500 may be formed so that the width of the site is different. Therefore, the assembly position of the PTC element 400 and the heating block 500 does not occur during assembly. In the present embodiment, the pair of longitudinal connecting members 310 is formed to be stepped so that the exposed width of the other surface of the contact plate 200 is fixed, that is, the surface on which the heat transfer block 500 is seated. Accordingly, the surface on which the PTC element 400 is seated, that is, the width of one side of the contact plate 200 may be narrow.

11 is an exploded perspective view of a contact plate and an insulator according to another embodiment.

As shown in FIG. 11, the insulator 300 coupled to the contact plate 200 may be configured to be coupled to the contact plate 200 in a structure in which the first support 320 and the second support 330 are detachable. have.

In this case, a coupling hole 370 is formed at a portion corresponding to the through hole 210 in the first support 320, and the coupling hole 370 is penetrated through the through hole 210 in the second support 330. Coupling protrusion 360 is formed. Although the coupling hole 370 is formed in the first support 320 and the coupling protrusion 360 is formed in the second support 330 in the present embodiment, the coupling hole 370 and the coupling protrusion 360 are formed. Forming positions can be exchanged with each other according to the user's selection.

As such, when the first support 320 and the second support 330 are combined in a detachable structure, the contact plate 200 and the insulator 300 may be separately manufactured, and the insulator 300 may not be damaged. Since it can be separated from the contact plate 200 has the advantage of easy maintenance and repair.

Figure 12 is an exploded perspective view of a vehicle preheater according to the present invention, Figures 13 to 15 are exploded views showing the coupling position of the PTC element and the heating block in each PTC rod assembly included in the vehicle preheater according to the present invention to be.

The vehicle preheater according to the present invention includes a plurality of PTC rod assemblies 1000A to 1000C and a plurality of PTC rod assemblies 1000A to 1000C arranged in parallel in the longitudinal direction as shown in FIG. 12. A pair of frames respectively coupled to the heat dissipation fin assembly 2000 coupled to the contact surface, the negative electrode terminal 3000 coupled between the heat dissipation fin assembly 2000, and an outer side surface of the heat dissipation fin assembly 2000 positioned at the outermost portion ( 4000 and 5000, the first housing 6000 and the coupling to the both ends of the combination of the PTC rod assembly (1000A ~ 1000C), the heat dissipation fin assembly (2000) and the negative electrode terminal 3000 and the frame (4000, 5000) 2 housing 7000 is configured. Heat generated from the PTC terminal mounted inside the PTC rod assemblies 1000A to 1000C is transferred to the heat radiating fin assembly 2000 to heat air passing through the heat radiating fin assembly 2000.

The vehicle preheater configured as described above has to be configured to be transmitted only to the heat dissipation fin assembly 2000 arranged inside the heat generated from the PTC element without escaping to the outside, so that the efficiency is increased. The 1000A is configured such that the PTC element 400A and the heat transfer block 500A are alternately mounted on both sides thereof so as to evenly transfer heat to the left and right sides, as shown in FIG. As shown in FIGS. 14 and 15, the PTI elements 400B and 400C are mounted on the inward facing surface of the vehicle preheater and the heat transfer blocks 500B and the surface of the vehicle preheater face the outer side of the vehicle preheater. 500C) is configured to be mounted.

However, the coupling position of each PTC element 400 and the heating block 500 is not limited thereto and may be freely changed according to a user's selection.

In addition, the PTC elements 400A to 400C may be configured to be spaced apart from the housings 6000 and 7000 by a predetermined interval so that heat is not discharged to the outside through the housings 6000 and 7000.

In addition, since the heat transferred to the heat dissipation fin assembly 2000 should not be transmitted to the frames 4000 and 5000, the frames 4000 and 5000 are in contact with the heat dissipation fin assembly 2000 such that the contact area with the heat dissipation fin assembly 2000 is reduced. Reinforcing grooves 4200 and 5200 are formed on the surface to extend in the longitudinal direction. As such, when the reinforcing grooves 4200 and 5200 are formed, the heat transfer rate is lowered because the contact area between the heat dissipation fin assembly 2000 and the frames 4000 and 5000 is reduced. In this case, since the air is filled in the reinforcing grooves 4200 and 5200, the heat of the heat dissipation fin assembly 2000 is transferred to the frames 4000 and 5000 through the air, but the air is transferred through the air because the heat transfer rate is very low. The amount of heat is extremely small.

PitiC rod assembly (1000A ~ 1000C) and the heat dissipation fin assembly (2000) heated by the heat generated from the PTC element is expanded in volume to push the frame (4000, 5000) coupled to the left and right to the outside, thereby Both ends of the frames 4000 and 5000 are coupled to the housings 6000 and 7000 and may be bent to protrude outwardly. As described above, when the frames 4000 and 5000 are bent, there is a problem in that the coupling of the components positioned between the frames 4000 and 5000 may be shaken.

Therefore, the frame (4000, 5000) applied to the present invention is formed such that the interruption of the surface in contact with the heat dissipation fin assembly 2000 is projected toward the heat dissipation fin assembly 2000. As described above, the interrupted portions of the frames 4000 and 5000 that are inwardly inclined are significantly reduced in spite of being pressured by the expansion of the TPC rod assemblies 1000A to 1000C and the heat dissipation fin assembly 2000, compared to the conventional frames having a straight line. Done. In addition, the frame (4000, 5000) to be applied to the present invention has the effect that the above-mentioned reinforcing grooves (4200, 5200) acts as a force to prevent the bending of the shape hardly caused by external force.

In addition, in the present embodiment, a separate negative electrode terminal 3000 is coupled between the heat dissipation fin assembly 20, but the vehicle preheater according to the present invention may be configured such that the frames 4000 and 5000 serve as the negative terminal. . As such, when the frames 4000 and 5000 serve as negative terminals, the internal structure of the vehicle preheater may be simplified and manufacturing cost may be reduced.

The heat dissipation fin assembly 2000 is coupled to both sides of the PTC rod assembly 1000A to 1000C. Since the amount of heat generated from the side on which the PTC element is mounted is greater than the side on which the heat block is mounted, the PTI element is mounted. The heat dissipation fin assembly 2000 is coupled to the side of the heat dissipation fin assembly 2000, and the number of heat dissipation fin assemblies 2000 is smaller than the heat dissipation fin assembly 2000 coupled to the side on which the PTC element is mounted. . In this embodiment, two heat dissipation fin assemblies 2000 are coupled to the side where the PTC element is mounted, and one heat dissipation fin assembly 2000 is coupled to the side on which the heat transfer block is mounted. The number of heat dissipation fin assemblies 2000 coupled to the side of 1000C is not limited thereto and may be variously changed according to a user's selection.

16 is a coupling diagram of the first housing and the PTC rod assembly included in the vehicle preheater according to the present invention.

Each of the PTC rod assemblies 1000A to 1000C of the vehicle preheater according to the present invention has different positions of the PTC element and the heat transfer block, and thus, when the positions coupled to the first housing 6000 are changed, efficiency decreases or breaks down. There are a number of problems that can arise.

In order not to cause the above problems, the bending heights of the terminals 210A to 210C of the respective PTC rod assemblies 1000A to 1000C are formed different from each other, and the first housing 6000 is each terminal 210A to 210C. The distance between the coupling terminals (6100 ~ 6300) and the seating grooves (6400 ~ 6600) for the seating of each guide portion (330A ~ 330C) is coupled to the bend height of each terminal (210A ~ 210C). Therefore, since each PTC rod assembly 1000A to 1000C may be coupled only to a designated position, confusion does not occur when assembling the PTC rod assembly 1000A to 1000C.

At this time, each of the PTC rod assembly (1000A ~ 1000C) is coupled so that the guide portion (330A ~ 330C) is completely inserted into the housing 6000.

In comparison with the conventional preheater, the vehicle preheater including the PTC rod assembly according to the present invention differs only in the structure of each part and the basic operation is the same, and thus detailed description thereof will be omitted.

Fig. 17 is a sectional perspective view of a housing applied to the preheater according to the present invention, and Fig. 18 is a sectional view of the housing showing the coupling structure of the housing terminals.

As shown in FIGS. 17 and 18, the first housing 6000 applied to the present invention is coupled so that one side is drawn into the first housing 6000 and the upper side is drawn into the first housing 6000. And a housing terminal 6700 configured to include a bending plate 6800 in contact with one end of the PTC rod 600 or the lower PTC rod 100. As such, when the housing terminal 6700 in contact with the PTC rods 100 and 600 is provided, the entire PTC rods 100 and 600 serve as a negative electrode terminal, and thus, there is no need to provide a separate negative electrode terminal. .

At this time, the housing terminal 6700 of the portion introduced into the first housing 6000, the locking projection 6900 is pressed to the first housing 6000 so that the housing terminal 6700 is not drawn out of the housing 6000. do. At this time, the engaging projection 6900 is preferably formed in the end is inclined, inclined in the withdrawal direction of the housing terminal 6700.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The PTC rod assembly according to the present invention has an advantage that the bonding force between the contact plate and the insulator is enhanced, the support for fixing the PTC element or the insulating plate is easily formed, and the strength of the terminal is enhanced.

In addition, the vehicle preheater according to the present invention, the heat generated from the PitiC rod is evenly transmitted to the inside without escaping to the outside, and the bonding force of each component located between the frame is improved, the PTI rod assembly and the heat radiation fin assembly There is an advantage that the adhesion between the liver is improved.

Claims (18)

A plurality of contact plates formed such that a pair of through holes are spaced apart at regular intervals in the longitudinal direction; A pair of longitudinal connecting members coupled to both longitudinal ends of the contact plate, a first support provided on one side of the contact plate to connect the pair of through holes, and adjacent from each of the longitudinal connecting members An insulator including a pair of second supports extending to cover the other side surface of the contact plate to a through hole connected to the first support through the through hole; A PTC element and a heat transfer block coupled between the first first supports or between the second pairs of second supports to contact the contact plate; PTC rod assembly, characterized in that comprises a. The method according to claim 1, The insulator includes a front end enlargement portion and a rear end enlargement portion, each of which extends a cross sectional area at a front end and a rear end thereof, and the front end enlargement part is formed in an open shape to expose one side surface of the contact plate. . The method according to claim 2, The contact plate has a fixture formed on a portion corresponding to the tip enlargement portion, and the tip expansion portion is a PTC rod assembly, characterized in that a fixing projection penetrating the fixture is formed in a portion corresponding to the fixture. The method according to any one of claims 1 to 3, And the insulator is integrally manufactured with the contact plate through a double injection process. The method according to any one of claims 1 to 3, The insulator is a PTC rod assembly, characterized in that coupled to the contact plate in a removable structure of the first support and the second support. The method according to any one of claims 1 to 3, And the longitudinal connecting member is formed stepwise so that the width of the portion where the PTC element is seated and the width of the portion where the heat transfer block is seated are different from each other. The method according to claim 6, The longitudinal connection member, the PTC rod assembly, characterized in that the width of the portion where the PTC element is seated is formed wider than the width of the portion where the heat transfer block is seated. The method according to claim 2 or 3, The contact plate is folded so that one end is protruded outwardly of the tip enlargement to be folded in two layers to form a terminal. The method according to claim 8, And the terminal is bent in a step shape. The method according to any one of claims 1 to 3, And the first support is separated from the longitudinal connecting member and connected to the second support through the through hole. The method according to any one of claims 1 to 3, And the second support is formed to connect the pair of longitudinal connecting members. Between the lower PTC rod formed in the channel shape, the contact plate and the insulator which is configured in accordance with any one of claims 1 to 3 and is introduced into the lower PTC rod, and the one side support to contact the contact plate A plurality of PCs arranged in parallel, including a PTC element coupled to the PTC element, a heat transfer block coupled between the other support to be in contact with the contact plate, and an upper PTC rod coupled to cover the opening of the lower PTC rod. A PTC rod assembly; One or more heat sink fin assemblies coupled to both sides of the PTC rod assembly; A pair of frames each coupled to an outer side surface of the heat dissipation fin assembly located at the outermost portion; First and second housings coupled to both ends of a combination of the PTC rod assembly, the heat dissipation fin assembly, and the frame; A housing terminal coupled to the inside of the housing to serve as a negative electrode terminal; Vehicle preheater, characterized in that comprises a. The method according to claim 12, The PTC rod assembly is located on the outermost side of the vehicle pre-heater, characterized in that the PTC element is mounted on the surface facing inward. The method according to claim 12, At least one PTC rod assembly is a vehicle pre-heater, characterized in that the PTC element and the heating block are alternately mounted on both sides. The method according to claim 12, The PTC rod assembly, On the side on which the PTC element is mounted, the vehicle pre-heater, characterized in that coupled to the number of the radiating fin assembly is stacked more than the side on which the PTC element is not mounted. The method according to claim 12, The frame is a pre-heater for a vehicle, characterized in that the reinforcing groove is formed long in the longitudinal direction of the contact surface with the heat dissipation fin assembly is in contact with the heat dissipation fin assembly. The method according to claim 12, The frame is pre-heater for the vehicle characterized in that it is formed such that the interruption of the surface in contact with the heat sink fin assembly toward the heat sink fin assembly. The method according to claim 12, The housing terminal is a vehicle pre-heater, characterized in that the bending plate is provided in contact with one end of the PTC rod.

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