KR100633627B1 - Blower resistor structure - Google Patents

Abstract

The present invention relates to a blower resistor structure, and more particularly, it is possible to obtain an excellent heat dissipation effect by increasing the length and cross-sectional area of a resistor by improving an existing single film type resistor to a double film resistor, and replacing the existing cover with a fuse. It is related with the blower resistor structure which can improve heat dissipation effect by improving the structure which is energized, and improve the mountability and cost reduction by integrally improving the base and the housing.

To this end, the present invention in the blower resistor structure comprising a cover and a heat sink and the base serving as their mounting surface, the first and second film resistor plate is arranged with the first mica therebetween, the first and The second mica and the third mica are in close contact with each other on the outer surface of the second film resistance plate, the blower resistor characterized in that the outer surface of the second mica is in close contact with the heat sink and the third mica is in close contact with the cover. Provide structure.

Blower Resistors, Double Film Resistor Plates, Covers, Heat Sink, Mica, Base, Housing

Description

Blower resistor structure             

1 is an exploded perspective view showing a blower resistor structure according to the present invention;

2 is an assembled perspective view showing the blower resistor structure according to the present invention;

3 is a cross-sectional view showing a blower resistor structure according to the present invention;

4 is a front view showing a double film resistor applied to the blower resistor structure according to the present invention and at the same time showing the singular operation;

5a and 5b are photographs showing a cover and a housing structure adopted in the blower resistor structure according to the present invention, respectively;

6 is a cross-sectional view showing a conventional blower resistor structure;

7 is a front view showing a single film type resistor applied to a conventional blower resistor structure, and at the same time showing the singular operation;

8A and 8B are photographs showing a cover and a housing structure adopted in a conventional blower resistor structure, respectively,

9 is a circuit diagram for each stage of the blower register.

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

10: first film resistance plate 12: second film resistance plate

14: 1st mica 16: 2nd mica

18: third mica 20: heat sink

22 cover 24 resistance plate of a single film

26: base 28: housing

30: connector 32: terminal

34: fuse

The present invention relates to a blower resistor structure, and more particularly, it is possible to obtain an excellent heat dissipation effect by increasing the length and cross-sectional area of a resistor by improving an existing single film type resistor to a double film resistor, and replacing the existing cover with a fuse. It is related with the blower resistor structure which can improve heat dissipation effect by improving the structure which is energized, and improve the mountability and cost reduction by integrally improving the base and the housing.

Typically, the parts for adjusting the air volume of the heater and the air conditioner for the vehicle to the first stage, second stage, and third stage are adjusted by the resistance in the resistor (Blower Motor).

Referring to the structure of a conventional blower resistor, as shown in the accompanying FIG. 6, the resistance plate 24 of the single film, the mica adhered to both surfaces of the resistance plate 24 of the single film, and one mica closely adhere to each other. The cover 22 is mounted, and the heat sink 20 is mounted in close contact with the other mica.

In addition, a terminal is connected to the lower end of the resistor plate, and the lower parts are mounted on the base while the components listed above are coupled, and as shown in FIG. 8A, the terminal 32 and the resistor plate 24 are soldered to each other. It becomes the state which energized.

In this case, as shown in FIG. 8B, a housing 28 having a connector is separately mounted on the bottom of the base 26.

On the other hand, the single-film resistive plate 24 performs different resistance functions according to the stage-by-stage operation (1 stage / 2 stage / 3 stage) of the blower switch as shown in the circuit diagram shown in FIG. Done.

That is, the resistance plate 24 of the single film is a component for adjusting the air volume of the heater and the air conditioner in one stage, two stages, and three stages, and is used to adjust the rotational speed of the blower motor according to the number of stages (Fig. 7).

Conventional blower registers having such a structure have the following problems.

1) In conventional blower resistors, the resistance plate of a single film is divided into 1, 2, and 3 stages, so the cross-sectional area of resistance is small during operation and durability. There is.

That is, as each stage of the blower is composed of one film resistance plate, there is a problem that the resistance cross section is small and the thermal shock is weak.

2) Due to soldering (Pb) of terminals and resistor plates, there is a problem in responding to EU heavy metal regulation.

3) The existing cover merely serves as a cover, and has a disadvantage of causing manufacturing cost and weight increase due to the housing and the base separated.

The present invention has been made in view of the above, 1) by separating the existing resistance plate of a single film into a double film type resistance plate, by reducing the heat to be dispersed per unit area by increasing the length and cross-sectional area of the resistance To prevent the fragility caused by heat; 2) improve the heat dissipation performance by improving the conduction structure in which the fuse is connected to the cover to dissipate heat not only from the heat sink but also from the cover; 3) It is possible to cope with EU heavy metal regulation by using lead-free solder with little lead (Pb) for terminals and resistor plates. 4) Blower resistor structure that saves manufacturing cost and weight by applying base and housing in one piece. The purpose is to provide.

In order to achieve the above object, the present invention provides a blower resistor structure including a cover and a heat sink and a base serving as a mounting surface thereof.

First and second film resistance plates are arranged with the first mica interposed therebetween, and second and third micas are closely arranged on outer surfaces of the first and second film resistance plates, respectively. The outer surface is in close contact with the heat sink and at the same time the third mica is in close contact with the cover to provide a blower resistor structure.

In a preferred embodiment, the base is formed integrally with the upper surface of the housing.

In a more preferred embodiment, the terminals connected to the lower ends of the first and second film resistor plates are characterized in that the lead-free connection.

In particular, the upper end of the fuse extending from the base of the housing is characterized in that it is electrically connected to the cover.

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

1 is an exploded perspective view illustrating a blower resistor structure according to the present invention, FIG. 2 is an assembled perspective view, and FIG. 3 is a sectional view.

As described above, the configuration of the blower resistor includes a film-shaped resistance plate, a mica surrounding the resistance plate, and a heat sink formed on one outer side, and a cover forming the other outer side. Is coupled to the base and the housing.

In addition, the base and the housing are configured with conductive plates serving as a conductive path of the terminals, and the conductive plates are connected to a connector formed on the bottom of the housing.

Here, as a main feature of the present invention, the resistive plate in the form of a film may be adopted as a resistive plate in the form of a double film, except for the resistive plate in the form of a conventional single film.

As a double film type resistance plate, the first and second film resistance plates 10 and 12 are provided to be in close contact with both sides of the first mica 14, respectively.

In addition, the second mica 16 and the third mica 18 are arranged in close contact with the outer surfaces of the first and second film resistance plates 10 and 12, respectively.

Accordingly, the outer surface of the second mica 18 is in close contact with the heat sink 20, and the outer surface of the third mica 18 is in close contact with the cover 22 and firmly coupled to each other.

By separating and applying the resistor plates to the first and second film resistor plates 10 and 12, the length and cross-sectional area of the resistor are increased compared to the resistor plate 24 of the conventional single film, and the heat to be dispersed per unit area is reduced. While the fragile part due to heat does not occur, it is possible to improve the durability to withstand heat while eventually obtaining a heat release effect.

In this case, when the resistance operation for each stage of the first film resistance plate 10 and the second film resistance plate 12 is performed, as shown in FIG. 4, the first film resistance plate 10 during the blower single stage operation is illustrated in FIG. 4. ) And the second film resistor plate 12 act as a resistor, and when the blower is operated in two stages, the left part of the first film resistor plate 10 and the second film resistor plate 12 acts as a resistor, and the blower In the three-stage operation, only the first film resistance plate 10 acts as a resistance.

By dispersing the resistive action regions of the first and second film resistive plates 10 and 12 by the number of blowers as described above, the weakness caused by heat is not generated while the heat to be dispersed per unit area is reduced.

On the other hand, the first and second film resistive plates 10, 12, the first, second, third mica 14, 16, 18, the heat sink 20 and the seating surface for the lower end of the cover 22 The base 26 is integrally formed on the upper surface of the housing 28, and the connector 30 is formed on the bottom of the housing 28 as shown in FIG. 5B.

Thus, by integrally molding the housing 28 and the base 26, it is possible to achieve cost reduction and weight reduction while automating the production line.

In addition, the method of connecting the upper end of the terminal 32 having the lower end fixed to the base 26 to the lower end of the resistance plate eliminates the conventional use of soldering and uses lead-free, thereby flexibly responding to heavy metal regulation. I can cope with it.

In particular, as shown in FIG. 5A, an upper end of the fuse 34 extending from the base 26 of the housing 28 is electrically connected to the cover 22. Thus, the fuse 34 covers the cover 22. Due to the current-carrying structure connected to (22), not only the heat dissipation plate 20 but also the heat dissipation from the cover 22 can increase heat dissipation performance.

As seen above, according to the blower register structure according to the present invention,

First, the resistance plate of the existing single film is separated and configured as a double film type resistance plate, so that the weakness caused by heat is not generated while the heat dispersed per unit area is reduced by increasing the length and cross-sectional area of the resistance, thereby increasing durability. .

Second, the fuse is improved to the current-carrying structure connected to the cover to release heat from the cover as well as the heat sink can further improve the heat dissipation performance.

Third, there is an advantage in that it is possible to cope with heavy metal regulation by using lead-free lead-free lead-free terminals and resistance plates.

Fourth, it is possible to obtain a manufacturing cost and weight reduction effect by applying the base and the housing integrally.

Claims (4)

delete delete The cover 22 and the heat dissipation plate 20 and the base 26 serving as a mounting surface thereof, including the first film resistance plate 10 and the second film resistance plate (with the first mica 14 therebetween) 12 is arranged, and the second mica 16 and the third mica 18 are arranged in close contact with the outer surfaces of the first film resistance plate 10 and the second film resistance plate 12, respectively, and the second In the blower resistor structure in which the outer surface of the mica 16 is in close contact with the heat sink 20 and the third mica 18 is in close contact with the cover 22, Blower resistor structure, characterized in that the terminal 32 is connected to the lower end of the first film resistance plate 10 and the second film resistance plate 12 by lead-free. The cover 22 and the heat dissipation plate 20 and the base 26 serving as a mounting surface thereof, including the first film resistance plate 10 and the second film resistance plate (with the first mica 14 therebetween) 12 is arranged, and the second mica 16 and the third mica 18 are arranged in close contact with the outer surfaces of the first film resistance plate 10 and the second film resistance plate 12, respectively, and the second In the blower resistor structure in which the outer surface of the mica 16 is in close contact with the heat sink 20 and the third mica 18 is in close contact with the cover 22, Blower resistor structure, characterized in that the upper end of the fuse (34) extending from the base (26) is electrically connected to the cover (22).

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