KR100805982B1 - Radiator fin assembly for PTC heater - Google Patents

Abstract

The present invention includes a heat dissipation fin having a predetermined length and formed to be corrugated, a housing having a space for accommodating the heat dissipation fin, and a cover closing the space, wherein the housing and the cover are clinching. Bonded by the Clinching process, it reduces the number of parts and the number of processes while simplifying the process, thereby improving workability and speeding up production, making it possible to heat fin assembly for PTC heaters for mass production. To provide.

PTC heater, heat dissipation fin assembly, point bonding, clinching, self-piercing rivet

Description

Radiator fin assembly for PTC heater

1A is an exploded perspective view showing a vehicle preheater according to the prior art.

1B and 1C are perspective and exploded perspective views showing the heat dissipation fin assembly according to the prior art from the front side and the rear side.

2A and 2B are a perspective view and an exploded perspective view showing a first embodiment of a heat dissipation fin assembly for a PTC heater according to the present invention from the front side and the rear side;

3A to 3D are process diagrams illustrating a bonding process of a housing and a cover in the first embodiment;

4A and 4B are exploded perspective views showing another embodiment of the first embodiment from the front side and the rear side;

5 is a partially exploded perspective view showing another embodiment of the first embodiment;

6A and 6B are a perspective view and an exploded perspective view showing a second embodiment of the heat dissipation fin assembly for the PTC heater according to the present invention from the rear side;

7A and 7B are a perspective view and an exploded perspective view showing another embodiment of the second embodiment from the rear side;

8 is a partially exploded perspective view showing another embodiment of the second embodiment;

9A and 9B are a perspective view and an exploded perspective view showing a third embodiment of the heat dissipation fin assembly for the PTC heater according to the present invention from the rear side;

10A and 10B are a perspective view and an exploded perspective view showing another embodiment of the third embodiment from the rear side;

11 is a partially exploded perspective view showing another embodiment of the third embodiment;

* Description of the symbols for the main parts of the drawings

100: heat dissipation fin assembly for PTC heater 110: heat dissipation fin

112: guide groove 120: housing

122: space 124a, 124b: stepped portion

126: joint groove 128: guide projection

130: cover MP: mold

P: Punch G: Groove

H: blank holder

The present invention relates to a heat dissipation fin assembly for a PTC heater, and more particularly, to a heat dissipation fin assembly for a PTC heater that can improve workability by reducing an assembly structure and reduce material costs.

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.

The coolant supplied to the heating device flows around the engine to cool the engine, and it takes a certain time after the engine is started until the coolant is heated by the operated engine to heat the room. Accordingly, after starting the engine, there was a problem that heating is not performed for a predetermined time.

In order to solve such a problem, a vehicle pre-heater that uses a positive temperature coefficient (PTC) element to preheat has been disclosed in the related art.

Hereinafter, with reference to the accompanying drawings briefly described the structure of a conventional vehicle pre-heater as follows.

1A is an exploded perspective view showing a vehicle preheater according to the prior art, and FIGS. 1B and 1C are perspective and exploded perspective views showing the heat dissipation fin assembly according to the prior art from the front side and the rear side.

As shown in FIG. 1A, a vehicle preheater according to the prior art includes a PTC rod assembly 10 including a PTC element and a heat dissipation fin assembly arranged side by side on both sides of the PTC rod assembly 10. And a cathode terminal 30 arranged side by side with the heat dissipation fin assembly 20. In addition, the PTC rod assembly 10, the heat dissipation fin assembly 20 and the frame (40, 50) coupled to both side ends of the combination of the negative electrode terminal 30, respectively, Further comprising a housing (60, 70) for coupling the assembly of the assembly (10), the heat dissipation fin assembly (20), the negative electrode terminal (30) and the frame (40, 50) to each other at both ends thereof. Consists of.

Among these, the heat dissipation fin assembly 20 will be described in more detail as follows.

1B and 1C, the heat dissipation fin assembly 20 includes a heat dissipation fin 22 having a predetermined length in one direction and corrugated in the longitudinal direction, and one side of the heat dissipation fin 22. It comprises a housing 24 is provided with a space for accommodating the cover, and a cover 26 for closing one open side of the housing 24.

At this time, the stepped parts 24a and 24b protruding in the vertical direction from the stop part are formed at the upper end and the lower end of the housing 24. That is, the longitudinal section of the stop portion of the housing 24 is formed in a "c" shape so that a portion of the tip of the heat dissipation fin 22 is inserted therein and coupled thereto. Accordingly, the heat dissipation fins 22 are fixed by the stepped parts 24a and 24b so as not to be separated from the housing 24 or flow therein.

The housing 24 and the cover 26 of the conventional heat dissipation fin assembly 20 configured as described above are joined by rivets 28. That is, the rivet hole 29 is formed at both ends of the housing 24 and the cover 26, the rivet 28 is inserted into the rivet hole 29, and one end of the rivet 28 is deformed to form the housing ( 24 and cover 26 are bonded.

However, since the method of joining the heat dissipation fin assembly 20 uses the rivet 28, the number of parts is increased and the rivet holes 29 must be formed in the housing 24 and the cover 26, respectively, so that the process is very complicated. There are disadvantages. In addition, as the number of parts is increased and the process is complicated, workability is lowered, and production speed is also lowered, which is not suitable for mass production.

Accordingly, an object of the present invention is to provide a heat dissipation fin assembly for a PTC heater that can simplify the process while reducing the number of parts and the number of processes by improving the joining method of the housing and the cover. There is this.

Further, another object of the present invention is to provide a heat dissipation fin assembly for a PTC heater suitable for mass production by improving workability and increasing production speed by reducing the number of parts and the number of processes and simplifying the process.

The heat dissipation fin assembly for the PTC heater according to the present invention for achieving the object as described above, the heat dissipation fin having a predetermined length and is formed corrugated, the housing is provided with a space for accommodating the heat dissipation fin, And a cover for closing the space.

At this time, the housing and the cover are joined by a clinching method.

In addition, a first joining groove having a predetermined depth in a vertical direction is formed in at least one end of the housing and the cover, and a second joining groove corresponding to the first joining groove is formed in at least one end of the cover. The second bonding groove may be joined by fitting the first bonding groove.

In addition, at least one end of any one of the housing and the cover is formed with an extended portion further protruding outward in the longitudinal direction, the other at least one end is formed with a seating groove in a position corresponding to the extension, the extension It can be joined by bending the part to be inserted into the seating groove.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2A and 2B are a perspective view and an exploded perspective view showing the first embodiment of the heat dissipation fin assembly for the PTC heater according to the present invention from the front side and the rear side.

2A and 2B, the first embodiment of the heat dissipation fin assembly 100 for a PTC heater according to the present invention includes a heat dissipation fin 110 and a space for accommodating the heat dissipation fin 110. The housing 120 is provided with a 122, and the cover 130 is coupled to the housing 120 to close the space 122.

The heat dissipation fin 110 is produced by bending the plate of the thin plate having a predetermined length in one direction, the front and rear ends of the heat dissipation fin 110 is bent to form a curved surface, the curved surface is in contact with the adjacent curved surface It is designed to be.

At this time, the heat dissipation fin 110 is preferably made of a material having a high heat transfer coefficient so that the heat dissipation is not deformed by heat, so that heat dissipation can be made quickly. In addition, the heat dissipation fin 110 has a wide upper and lower width so as to increase the contact area with air, it is preferable that the heat dissipation fin 110 is made of a thin plate material of thin thickness to increase the heat dissipation efficiency.

The heat dissipation fin 110 is formed to be corrugated in the longitudinal direction as shown in the drawing, by forming such a corrugation not only improves the heat dissipation effect but also strengthens the structural strength against external force applied in the vertical and horizontal directions. It has the advantage of being.

Here, in the present embodiment, the heat dissipation fins 110 are formed to be wrinkled to form curved surfaces at both front and rear ends, but are not necessarily limited thereto and are variously deformed into a zigzag thin plate or pin shape according to a user's selection. Can be applied.

The housing 120 has a predetermined thickness and is manufactured by bending a plate formed long in the same direction as the longitudinal direction of the heat dissipation fin 110. The heat dissipation fin 110 is disposed at a stop portion of the housing 120. It is bent to protrude forward to provide a space 122 to accommodate the, both ends are bent to allow surface contact with the front surface of the cover (130).

In this case, a pair of stepped portions 124a and 124b protruding from the upper and lower ends of the housing 120 toward the cover 130 is formed, and the longitudinal cross-sectional shape thereof is formed as a letter 'c'. A portion of the tip of the heat dissipation fin 110 is coupled between the stepped portions 124a and 124b. That is, the heat dissipation fins 110 are fixed by the stepped portions 124a and 124b, and may prevent the heat dissipation fins 110 from flowing or leaving the housing 120.

The cover 130 is a plate member having a predetermined thickness and formed to be elongated in the same direction as the longitudinal direction of the housing 120. The cover 130 is preferably formed to have a length that can be bonded to the housing 120. Most preferably, the same length as.

Among the components of the first embodiment formed as described above, the housing 120 and the cover 130 are joined by a point fastening method, as shown in FIG. 2A, the most representative of which is clinching. Clinching is used.

3A to 3D are process diagrams illustrating a bonding process of the housing and the cover in the first embodiment, and the bonding process of the housing 120 and the cover 130 using the clinching method with reference to FIGS. 3A to 3D. Looking at it as follows.

As shown in FIG. 3A, one end of the housing 120 and the cover 130 is inserted between the mold MP and the punch P. FIG. In this case, a circular groove G having a predetermined depth is formed at an upper portion of the mold MP, and the punch P is formed in a shape that can be inserted into the groove G and is inside the blank holder H. Is coupled to be movable in the vertical direction.

In this state, if the blank holder (H) is moved in contact with the upper surface of the housing 120, and the punch (P) inside the blank holder (H) downwards, the punch (P) as shown in Figure 3b When the housing 120 and the cover 130 are pressed, the pressing surfaces of the housing 120 and the cover 130 are extended and drawn into the groove G of the mold MP as shown in FIG. 3C.

Thereafter, the punch P is moved upward to separate the housing 120 and the cover 130 from each other, and the housing 120 and the cover 130 are separated from the mold MP to complete the bonding.

At this time, the housing 120 and the cover 130 is formed with a joining protrusion 126, the joining protrusion 126 is in the groove (G) of the mold (MP), the width of which is expanded in the step of Figure 3c. The lower part is formed wider than the upper part, and the bonding property is very excellent so that the housing 120 and the cover 130 are not easily separated.

In the present embodiment, the bonding protrusion 126 is formed to be pulled into the rear of the heat dissipation fin assembly 100 for the PTC heater, but is not limited thereto, and the heat dissipation fin assembly for the PTC heater is pressurized from the rear of the cover 130. It may be formed to protrude forward of the (100).

In addition, in the present embodiment, the clinching method is used in the bonding of the housing 120 and the cover 130, but the present invention is not limited thereto, and a bonding method using a self-piercing rivet, which is similar to the user's needs, may be used. You may join.

4A and 4B are exploded perspective views showing another embodiment of the first embodiment from the front side and the rear side, respectively.

As shown in Figs. 4A and 4B, another embodiment of the first embodiment is composed of the same components as the first embodiment. The configuration is a heat dissipation fin 110, a housing 120 is provided with a space 122 for accommodating the heat dissipation fin 110, and a cover coupled to the housing 120 to close the space 122 It consists of 130. At this time, the components of the other embodiment is formed in a shape similar to the components of the first embodiment, the following description will be described only the differences from the first embodiment.

The heat dissipation fin 110 is formed to corrugate the plate of a thin plate having a predetermined length in one direction, the curved surface is formed at both front and rear ends and the curved surface is formed to contact the adjacent curved surface. In addition, the guide groove 112 is formed in the longitudinal direction of the heat dissipation fin 110 in the curved surface formed in front of the curved surface of the heat dissipation fin 110. In order to couple the heat dissipation fins 110 so that the guide protrusions 128 of the housing 120 to be described later are inserted into the guide grooves 112, the housing 120 will be described in detail.

The housing 120 is bent to accommodate the heat dissipation fins therein, and a guide protrusion 128 protruding toward the guide groove 112 is formed in the middle of the housing 120 in the longitudinal direction of the housing 120.

The guide protrusion 128 is coupled to be inserted into the guide groove 112 of the heat dissipation fin 110 as described above, to prevent the heat dissipation fin 110 is separated from the housing 120, the heat dissipation fin 110 ) Does not flow inside the housing 120.

Among the components of the other embodiment formed as described above, the housing 120 and the cover 130 are joined by the clinching method shown in FIGS. 3A to 3D, and a detailed description thereof will be omitted. .

5 is a partially exploded perspective view showing still another embodiment of the first embodiment.

As shown in FIG. 5, another embodiment of the first embodiment includes a pair of heat dissipation fins 110a and 110b and a pair of spaces for accommodating the heat dissipation fins 110a and 110b. It consists of a housing (120a, 120b) and a cover 130 is coupled to the housing (120a, 120b) to close the space.

That is, the pair of heat dissipation fins 110a and 110b and the housings 120a and 120b are symmetrically positioned in front and rear around the cover 130, respectively, and the pair of housings 120a and 120b and one cover are symmetrically positioned. 130 is joined by a clinching method.

In this case, the heat dissipation fins (110a, 110b) and the housing (120a, 120b) is shown to be formed with a guide groove 112 and the guide protrusion 128, respectively, but is not necessarily limited to this and the guide groove as in the first embodiment It can also be applied to a housing having no heat dissipation fin and a stepped portion.

6A and 6B are a perspective view and an exploded perspective view showing a second embodiment of the heat dissipation fin assembly for the PTC heater according to the present invention from the rear side.

6A and 6B, the second embodiment of the heat dissipation fin assembly 200 for the PTC heater according to the present invention includes a heat dissipation fin 210 and a space for accommodating the heat dissipation fin 210. The housing 220 is provided with a 222, and the cover 230 is coupled to the housing 220 to close the space 222. At this time, the configuration of the second embodiment and the shape of the components are made similar to the first embodiment, the shape of both ends of the housing 220 and the cover 230 and their bonding method is different. Therefore, in the following description, only differences from the first embodiment will be described.

Both ends 224 of the housing 220 are formed in a flat plate shape so as to be bonded to both ends 234 of the cover 230, the predetermined end in the vertical direction from the top to the end of both ends 224 of the housing 220 The first joining groove 226 extending downward to the height is formed.

In addition, both ends 234 of the cover 230 are bent in a crank shape on a plane to be bonded to both ends 224 of the housing 220, a predetermined height in a vertical direction from the bottom to the portion bent in the crank shape A second joining groove 236 extending upwards is formed.

The housing 220 and the cover 230 formed as described above are coupled to the second bonding groove 236 to be fitted into the first bonding groove 226 when the housing 220 and the cover 230 are coupled to each other, and both ends 224 of the housing 220 are fitted. Is inserted into the second joining groove 236, and both ends 234 of the cover 230 are joined to be inserted into the first joining groove 226.

That is, in the state where the first joining groove 226 and the second joining groove 236 are inserted into each other, the cover 230 is joined by sliding up and down along the housing 220.

7A and 7B are a perspective view and an exploded perspective view showing another embodiment of the second embodiment from the front side and the rear side.

As shown in Figs. 7A and 7B, another embodiment of the second embodiment is composed of the same components as the second embodiment. The construction includes a heat dissipation fin 210, a housing 220 having a space 222 for accommodating the heat dissipation fin 210, and a cover coupled to the housing 220 to close the space 222. 230. At this time, the components of the other embodiment is formed in a shape similar to the components of the second embodiment, the following description will be emphasized only the difference from the second embodiment.

A guide groove 212 is formed in a lengthwise direction of the heat dissipation fin 210 in the curved surface formed at the front end of the curved surfaces formed at both front and rear ends of the heat dissipation fin 210. In addition, a guide protrusion 228 is formed in the middle of the housing in the longitudinal direction of the housing 220. The guide protrusion 228 is formed at the rear of the housing 220, that is, the guide groove of the heat dissipation fin 210. It is formed to protrude toward 212.

At this time, the guide protrusion 228 is coupled to be inserted into the guide groove 212 of the heat dissipation fin 210, to prevent the heat dissipation fin 210 is separated from the housing 220, the heat dissipation fin 210 It does not flow inside the housing 220.

Here, both end portions 224 of the housing 220 and both end portions 234 of the cover 230 are formed with a first joining groove 226 and a second joining groove 236, respectively, as in the second embodiment. As the first joining groove 226 is inserted into the second joining groove 236, the housing 220 and the cover 230 are joined. This is a bonding method illustrated in the second embodiment, a detailed description thereof will be omitted.

8 is a partially exploded perspective view showing another embodiment of the second embodiment.

As shown in FIG. 8, another embodiment of the second embodiment of the heat dissipation fin assembly 200 for the PTC heater according to the present invention includes a pair of heat dissipation fins 210a and 210b and the heat dissipation fin. A pair of housings 220a and 220b having a space for accommodating the 210a and 210b and a cover 230 coupled to the housings 220a and 220b to close the space.

That is, another embodiment of the second embodiment is configured such that the pair of heat dissipation fins 210a and 210b and the housings 220a and 220b are symmetrically positioned in front and rear with respect to the cover 230. At this time, both ends of the cover were Y-shaped to be coupled to the pair of housings.

As described above, the pair of housings 220a and 220b and the cover 230 have joining grooves 226 and 236 formed at both ends 224 and 234, respectively, and the joining grooves 226 and 236 are formed. Bonded by being inserted into each other, this bonding method is the same as the bonding method of the second embodiment, a detailed description thereof will be omitted.

In this case, the heat dissipation fins 210a and 210b and the housings 220a and 220b are illustrated so that the guide grooves 212 and the guide protrusions 228 are formed, respectively, but are not necessarily limited thereto. It can also be applied to a housing having no heat dissipation fin and a stepped portion.

9A and 9B are a perspective view and an exploded perspective view showing a third embodiment of the heat dissipation fin assembly for the PTC heater according to the present invention from the rear side.

9A and 9B, a third embodiment of a heat dissipation fin assembly 300 for a PTC heater according to the present invention includes a heat dissipation fin 310 and a space for accommodating the heat dissipation fin 310. A housing 322 is provided, and a cover 330 coupled to the housing 320 to close the space 322. At this time, the configuration of the third embodiment and the shape of the components are made similar to the first and second embodiments, only the shape of both ends of the housing 320 and the cover 330 and their bonding method is different. Therefore, in the following description, only differences from the first and second embodiments will be described.

Both ends 324 of the housing 320 are formed with extension portions 326 protruding further outward in the longitudinal direction thereof, and both ends of the cover 330 are seated at positions corresponding to the extension portions 326. 332 is formed.

The extension part 326 formed as described above is bent when the housing 320 and the cover 330 are joined to be inserted into the seating groove 332, and is bent once more to be in contact with the rear surface of the cover 330. Therefore, the housing 320 and the cover 330 are bonded to each other by the extension part 326 inserted into the seating groove 332 to be bent.

At this time, the depth of the seating groove 332 is preferably formed to be the same as the thickness of the extension portion 326.

In the present embodiment, the extension portion 326 is formed in the housing 320 and the seating groove 332 is formed in the cover 330. However, the present invention is not limited thereto, and a seating groove is formed in the housing 320 and the cover is formed. An extension portion may be formed at 330 to be used.

10A and 10B are a perspective view and an exploded perspective view showing another embodiment of the third embodiment from the rear side.

As shown in Figs. 10A and 10B, another embodiment of the third embodiment consists of the same components as the third embodiment. The construction includes a heat dissipation fin 310, a housing 320 having a space 322 for accommodating the heat dissipation fin 310, and a cover coupled to the housing 320 to close the space 322. 330. At this time, the components of the other embodiment is formed in a shape similar to the components of the third embodiment, the following description will be emphasized only the difference from the third embodiment.

A guide groove 312 is formed in a lengthwise direction of the heat dissipation fin 310 in a curved surface formed at the front end of the curved surfaces formed at both front and rear ends of the heat dissipation fin 310. In addition, a guide protrusion 328 is formed in the middle of the housing in the longitudinal direction of the housing 320. The guide protrusion 328 is formed at the rear of the housing 320, that is, the guide groove of the heat dissipation fin 310. It is formed to protrude toward 312.

At this time, the guide protrusion 328 is coupled to be inserted into the guide groove 312 of the heat dissipation fin 310, to prevent the heat dissipation fin 310 is separated from the housing 320, the heat dissipation fin 310 It does not flow inside the housing 320.

Here, both ends 324 of the housing 320 are formed with extension portions 326 that protrude further outward in the longitudinal direction, and both ends of the cover 330 are seated at positions corresponding to the extension portions 326. 332 is formed, and the extension part 326 formed as described above is bent when the housing 320 and the cover 330 are joined to be inserted into the seating groove 332, and the cover 330 is bent once more. It comes in contact with the back of. Therefore, the housing 320 and the cover 330 are bonded to each other by the extension part 326 inserted into the seating groove 332 to be bent.

11 is a partially exploded perspective view showing still another embodiment of the third embodiment.

As shown in FIG. 11, another embodiment of the third embodiment of the heat dissipation fin assembly 300 for the PTC heater according to the present invention includes a pair of heat dissipation fins 310a and 310b and the heat dissipation fin. It is composed of a pair of housings (320a, 320b) is provided with a space for accommodating (310a, 310b), and a cover 330 coupled to the housing (320a, 320b) to close the space.

That is, another embodiment of the third embodiment is configured such that the pair of heat dissipation fins 310a and 310b and the housings 320a and 320b are positioned symmetrically in front and rear with respect to the cover 330. At this time, both ends of the cover are formed with a pair of extension portions spaced apart at predetermined intervals, respectively, and the mounting grooves are formed at positions corresponding to the extension portions at both ends of the pair of housings.

The extension parts 326a and 326b formed as described above are bent when the housing 320 and the cover 330 are joined to be inserted into the seating grooves 332a and 332b, and bent once again to contact the rear surface of the cover 330. The bonding method is the same as the bonding method of the third embodiment, and a detailed description thereof will be omitted.

Meanwhile, in FIG. 22, the heat dissipation fins 310a and 310b and the housings 320a and 320b are formed in the form of the guide grooves 312 and the guide protrusions 328, respectively, but are not necessarily limited thereto. Like this, it can be applied to a heat dissipation fin without a guide groove and a housing having a stepped portion.

As described above, the configuration and manufacturing process of the heat dissipation fin assembly for the PTC heater according to the preferred embodiment of the present invention is shown in accordance with the above description and drawings, but this is merely described for example and the technical spirit of the present invention. Those skilled in the art will appreciate that various changes and modifications can be made without departing.

As described above, the heat dissipation fin assembly for the PTC heater of the present invention may improve workability by simplifying the assembly structure by forming guide protrusions and guide grooves in the housing and the heat dissipation fin.

In addition, it is possible to remove the extension formed on the upper and lower ends of the housing has the advantage of reducing the material cost.

Claims (9)

A heat dissipation fin having a predetermined length and formed to be corrugated; A housing provided with a space for accommodating the heat dissipation fins; A cover for closing the space; Is configured to include, wherein the housing and the cover is a heat dissipation fin assembly for a PTC heater, characterized in that the bonding by a clinching (Clinching) method. A heat dissipation fin having a predetermined length and formed to be corrugated; A housing provided with a space for accommodating the heat dissipation fins; A cover for closing the space; A first joining groove having a predetermined depth in a vertical direction is formed in at least one end of the housing, and a second joining groove corresponding to the first joining groove is formed in at least one end of the cover. And a first joining groove is fitted into the second joining groove so that the housing and the cover are joined to each other. A heat dissipation fin having a predetermined length and formed to be corrugated; A housing provided with a space for accommodating the heat dissipation fins; A cover for closing the space; It is configured to include, wherein at least one end of any one of the housing and the cover is formed with an extension further protruding outward in the longitudinal direction, the other at least one end is seated in a position corresponding to the extension The heat dissipation fin assembly for the PTC heater, characterized in that the extension is bent and inserted into the seating groove is bonded to the housing. The method according to claim 3, Heat sink fin assembly for the PTC heater, characterized in that the depth of the seating groove is equal to the extension thickness. The method according to any one of claims 1 to 4, Heat dissipation fin assembly for a PTC heater, characterized in that the stepped portion protruding toward the heat dissipation fin side is formed on the top and bottom of one surface of the housing in contact with the heat dissipation fin. The method according to any one of claims 1 to 4, A guide protrusion protrudes in a longitudinal direction of the housing on one surface of the housing in contact with the heat dissipation fin, and the heat dissipation fin assembly is formed with a guide groove corresponding to the guide protrusion. The method according to any one of claims 1 to 4, The heat dissipation fin and the housing is provided in pairs, the heat dissipation fin assembly for the PTC heater, characterized in that the bonding is located on both sides of the cover. The method according to claim 5, The heat dissipation fin and the housing is provided in pairs, the heat dissipation fin assembly for the PTC heater, characterized in that the bonding is located on both sides of the cover. The method according to claim 6, The heat dissipation fin and the housing is provided in pairs, the heat dissipation fin assembly for the PTC heater, characterized in that the bonding is located on both sides of the cover.

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