KR100668978B1 - Pad spring coating method of automobile disc brake - Google Patents

Abstract

The present invention provides a coating method of a pad spring for use in an automobile disc brake, the method comprising: degreasing the pad spring material; Degreasing solution removal step; Etching the material from which the degreasing solution has been removed; A first washing step and a second washing step for removing the deliming solution used for etching; Drying step; Teflon primary coating step of coating on the front of the material; Drying after completion of the first teflon coating; Cooling the dried material again for secondary coating; Second coating the back of the material to the cooled material; Calcining the material after the secondary coating; The present invention relates to a coating method of a pad spring of an automobile disc brake, the main characteristic of which includes cooling again.

Disc brake, pad spring, teflon, coated

Description

Pad spring coating method of automobile disc brake

1 is a schematic view showing a disc brake for an automobile.

Figure 2 is a perspective view of the pad spring.

Figure 3 is a schematic diagram showing the manufacturing step of the pad spring.

4 is a detailed view of portion a of FIG.

FIG. 5 is a detailed view of portion b of FIG. 3

FIG. 6 is a detailed view of portion c of FIG.

7 is a detailed view of the portion d of FIG.

FIG. 8 is a detailed view of portion e of FIG. 3

9 is a detailed view of portion f of FIG.

10 is a schematic diagram showing a calibration step.

FIG. 11 is a detailed view of portion g of FIG. 10

12 is a partial detailed view of FIG. 10;

FIG. 13 is a detailed view of portion i of FIG. 10; FIG.

14 is a flow chart showing an example of the pad spring coating step in the present invention

<Explanation of symbols for main parts of drawing>

1: Caliper Body 2: Talk Member

3: caliper protrusion 4: guide groove

5: Disc Plate 6: Disc Rotor

7: pad plate 8: friction pad

9: Protruding Jaw 10: Hydraulic Cylinder

11: pad spring

100: vertical portion 101: elastic support portion

102: pad guide portion 103: caliper fixing part

104: guide protrusion 105: locking protrusion

200: connection portion 300: pilot hole

A brake mounted on a vehicle is a device for decelerating, stopping or maintaining a stopped state of a vehicle, and includes a drum brake and a disc brake.

Generally, a disc brake for a vehicle includes a caliper body 1 fixed to a vehicle side, and a guide groove for allowing sliding movement by inserting a pad plate 7 while being axially coupled to an inner side of the caliper body 1. A torque member 2 formed with 4); A cylinder 10 coupled to a hole formed at one side of the caliper body 1 and generating hydraulic pressure according to the pressure of the brake pedal; A pair of pad plates (7) having a pair of friction pads (8) in which a protruding jaw (9) is formed so as to be inserted into the guide groove (4) of the torque member (2) and one side is in contact with the cylinder (10). Wow; A disc rotor (6) formed between the pad plates (7), the disc plates (5) being rubbed by the pad plates (7) and rotating together with the wheels of the vehicle; A pair having a bent portion (elastic support portion) to be fitted to the guide groove (4) in the state receiving the protruding jaw (9) and the engaging projection 105 for fixing to the inside of the torque member (2) formed inside It is configured to include a pad spring (11).

' 모양으로, 상기 탄력지지부는 끝부분이 패드플레이트의 모서리를 감쌀 수 있도록 적당한 곡률을 이루면서 돌출된 모양이고, 상기 패드가이드부와 캘리퍼고정부는 한 면을 공유하여 그 단면이 전체적으로 '

' 토양이며, 또한 상기 패드가이드부 및 캘리퍼고정부에는 패드플레이트의 슬라이딩이동 및 조립을 용이하게 하기위한 가이드돌기가 형성되고, 상기 탄력지지부 또는 캘리퍼고정부의 안쪽에는 걸림돌기가 형성된 자동차용 디스크 브레이크의 패드스프링에 있어서;The present invention related to the manufacturing method of the pad spring, when interposed between the torque member and the pad plate, the elastic support for supporting in the form of wrapping around the outer peripheral surface of the pad plate, the pad guide portion for sliding the pad plate and the caliper Two symmetrical vertical parts formed of caliper fixing parts inserted and fixed to the protrusions are connected to each other by

In the shape, the elastic support is a protruding shape to form an appropriate curvature so that the end portion wraps around the edge of the pad plate, the pad guide portion and the caliper fixing parts share one side so that the cross section is'

'Soil, and also the pad guide portion and the caliper fixing portion is formed with a guide protrusion for facilitating the sliding movement and assembly of the pad plate, the inner side of the resilient support or caliper fixing portion of the disc brake for automobiles In a pad spring;

A stainless steel sheet wound in a roll shape with an appropriate width and thickness is supplied to a press installed with a sequential transfer mold continuously by a predetermined length from the feeder, and as shown in FIG. 3, through notching, bending and trimming. There is a method of manufacturing the pad spring.

In addition, the fabricated pad spring may further include a step of coating Teflon on the inner surface of the pad spring (that is, the surface in contact with the pad plate), if the Teflon coating on the inner surface of the pad spring of the pad plate As well as the sliding movement is made more smoothly, the Teflon coating layer serves as a sound absorbing layer has the effect of significantly reducing the noise. However, since no appropriate coating method has been developed, the coating area is poor, a lot of defects occur, and it takes a lot of time in coating to cause a lot of expenses, and eventually the competitiveness of the product is lowered.

Therefore, the present invention can be used for automobile disc brakes, which can save mass coating time by efficient coating process, can mass produce, improve product quality, reduce defect rate, reduce product manufacturing cost and improve product competitiveness. It is intended to provide a pad spring coating method.

모양으로, 상기 탄력지지부(101)는 끝부분이 패드플레이트(7)의 모서리를 감쌀 수 있도록 적당한 곡률을 이루면서 돌출된 모양이고, 상기 패드가이드부(102)와 캘리퍼고정부(103)는 한 면을 공유하여 그 단면이 전체적으로

모양이며, 또한 상기 패드가이드부(102) 및 캘리퍼고정부(103)에는 패드플레이(7)의 슬라이딩이동 및 조립을 용이하게 하기위한 가이드돌기(104)가 형성되고, 상기 탄력지지부(101) 또는 캘리퍼고정부(103)의 안쪽에는 걸림돌기(105)가 형성된 모양이다.The pad spring 11 used in the automobile disc brake of the present invention is interposed between the torque member 2 and the pad plate 7, and as shown in FIG. 2, the pad spring 11 surrounds a part of the outer circumferential surface of the pad plate 7. The elastic support portion 101 to support in the form, the pad guide portion 102, the pad plate 7 is slidingly moved, and the caliper fixing portion 103, which is inserted into and fixed to the protrusion 3 of the caliper, is sequentially formed. The symmetrical vertical portion 100 is connected by the connecting portion 200

In the shape, the resilient support 101 is protruding to form a suitable curvature so that the end portion can wrap the edge of the pad plate (7), the pad guide portion 102 and the caliper fixing portion 103 is one side So that its cross section

In addition, the pad guide portion 102 and the caliper fixing portion 103 is formed with a guide protrusion 104 for facilitating sliding movement and assembly of the pad play 7, the elastic support portion 101 or The inside of the caliper fixing part 103 is a shape of the locking projection 105 is formed.

The components of teflon used in the present invention are polyamide imide polymer (PAI), melamine resin, tetrafluoroethylene resin, formaldehyde, N-butyl alcohol (N Butyl alcohol, methyl isobutyl ketone, VM & P naphtha, methyl pyrrolidone, and carbon black.
That is, the teflon used in the present invention includes all of the above components.

In general, almost all matter does not stick to Teflon. In the case of very adhesive materials, most of them are easily separated. The coefficient of friction of Teflon depends on the load, the sliding speed, and the type of Teflon coating used, but is generally between 0.05 and 0.2. It is enough.

Teflon-coated surfaces are easy to clean because they do not get wet with water or oil, and in many cases are automatically cleaned.

Teflon coating can be used continuously up to 290 ℃ and intermittently up to 315 ℃ under proper ventilation conditions.

Teflon has high insulation, low loss rate and high surface resistance over a wide range of frequencies. In addition, there is a coating for preventing static electricity by providing conductivity as a special technology.

Teflon coatings do not lose their physical properties even at extremely low temperatures. Teflon is generally not affected by the chemical environment.

The pad spring used in the present invention first has a material stocking step for coating. The material receipt stage is classified according to the specification and size and the coating purpose of the pad springs by company. The next step is the degreasing step. This step removes oil. The degreasing liquid uses sodium hydroxide containing a surfactant. The concentration is 15 to 20% and the use temperature is 35 to 45 ° C. Degreasing time is 15 to 20 minutes. At the end of the degreasing step, remove the degreasing solution. Washing liquid uses water. The use temperature of the degreasing liquid is 20-30 degreeC. And the time is 1 to 2 minutes. The next step in washing is the etching step. Etching is a step to remove rust and scale. The etching degreasing solution uses a chemical polishing agent. The concentration is 5 to 10%. The use temperature is 50 to 60 ℃ and the use time is 3 to 5 minutes. Again, go through the first washing step to remove the derinsed liquid. As in the previous step, the wash liquor is water and the operating temperature is 20 to 30 minutes. It goes through the second washing stage again. The second washing stage is the same washing amount, temperature and same washing time as the first washing stage. After the second washing, the drying step is performed. The drying step is a step of removing moisture using a hot air dryer. After drying, apply the next Teflon primary coating. It is a spray type by coating on the front of the material. Its dry coating thickness is 15 microns or more. When the first teflon coating is completed, it is dried for about 10 minutes at 180 to 190 ℃ again. The dried material is cooled for secondary coating. At this time, the material temperature is about 60 to 70 ℃. The cooled material is then subjected to a second coating. In this case, the back of the material is coated. The dry film thickness is 15 microns or more as before, and it is a spray type. The material after the secondary coating is fired. In this case, it bakes for 20 minutes at about 290 degreeC. The finished material is then cooled again. At this stage, forced cooling using natural cooling or an air fan is used. The cooled material is then packed and needs individual packaging to avoid damaging the coating surface.

Therefore, the present invention has the effect that the coating time is saved by the efficient coating process, mass production is possible, and the quality of the product is improved, so that the defect rate is extremely low, thereby lowering the manufacturing cost of the product and improving the competitiveness of the product.

Claims (4)

delete delete delete A method of coating a pad spring for use in an automobile disc brake, the method comprising: stripping the pad spring material; Degreasing solution removal step; Etching the material from which the degreasing solution has been removed; A first washing step and a second washing step for removing the deliming solution used for etching; Drying step; Teflon primary coating step of coating on the front of the material; Drying after completion of the first teflon coating; Cooling the dried material again for a secondary coating; Second coating the back of the material to the cooled material; Calcining the material after the secondary coating; Including the step of cooling again, the degreasing solution is sodium hydroxide including a surfactant, the etching degreasing solution using a chemical polishing agent, the coating agent polyamide imide polymer (PAI), melamine resin ( Melamine resin, Tetrafluoroethylene resin, Formaldehyde, N-Butyl alcohol, Methyl isobutyl ketone, VM & P naphtha, Methylpi Coating method of pad spring of automobile disc brake, characterized in that it consists of Methyl pyrrolidone, Carbon black

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