KR20150041430A - Seal mounting structure of caliper brake for vehicle - Google Patents

Seal mounting structure of caliper brake for vehicle Download PDF

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Publication number
KR20150041430A
KR20150041430A KR20130119956A KR20130119956A KR20150041430A KR 20150041430 A KR20150041430 A KR 20150041430A KR 20130119956 A KR20130119956 A KR 20130119956A KR 20130119956 A KR20130119956 A KR 20130119956A KR 20150041430 A KR20150041430 A KR 20150041430A
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KR
South Korea
Prior art keywords
piston
seal
seal mounting
end wall
mounting groove
Prior art date
Application number
KR20130119956A
Other languages
Korean (ko)
Inventor
김영택
구본기
Original Assignee
한국델파이주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국델파이주식회사 filed Critical 한국델파이주식회사
Priority to KR20130119956A priority Critical patent/KR20150041430A/en
Publication of KR20150041430A publication Critical patent/KR20150041430A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/005—Components of axially engaging brakes not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/005—Components of axially engaging brakes not otherwise provided for
    • F16D65/0068—Brake calipers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A technical problem of the present invention is to provide a seal mounting structure of a caliper brake for a vehicle, minimizing a dragging phenomenon and preventing damage to a seal in advance even if a little brake fluid is used. To achieve this, the seal mounting structure of a caliper brake for a vehicle of the present invention, wherein a seal is mounted between a piston and a cylinder, comprises: a seal mounting groove formed in a portion in contact with the piston of the cylinder; a front end wall forming a front end boundary portion of the seal mounting groove based on the direction wherein the piston is pressurized; a rear end wall forming a rear end boundary portion based on the direction wherein the piston is pressurized; and a bottom surface forming the bottom of the seal mounting groove. The front end wall includes: an inner side surface forming a portion with which the seal is in contact; and an end surface forming a portion with which the piston is in contact. A corner between the inner side surface and the end surface is cut off as a convex round shape.

Description

Technical Field The present invention relates to a seal mounting structure of a caliper brake for a vehicle,

The present invention relates to a caliper brake for an automobile.

2. Description of the Related Art Generally, a caliper brake for an automobile is a device for braking a brake pad by bringing the brake pad into close contact with the brake disk, so that the brake pad moved by hydraulic pressure is brought into close contact with the brake disk interlocked with the wheel.

The caliper brake 100 for an automobile disclosed in Korean Patent Laid-Open No. 10-2009-0011466 by a conventional technique is fixed to an inner knuckle arm of a wheel wheel as shown in Figs. 1 and 2 A caliper bracket 120 having a brake pad 130 slidably mounted on both sides of a brake disk installed to rotate synchronously with the wheel wheel; And a caliper body 110 slid through the caliper bracket 120 to contact the pad 130 with the disk.

A wheel cylinder 111 is formed in the center of the caliper body 110 in the sliding direction of the brake pad 130. A piston 113 is installed in the wheel cylinder 111, The brake pad 130 located on the inner side of the disk is slid to the disk side by the oil pressure injected into the disk.

A lower end of the caliper body 110 is provided with a fork portion 140 for contacting the brake pad 130 located on the outer side of the disk with the outer surface of the disk by reaction with the piston 113 when the piston 113 is operated, Extends toward the brake pad 130 and supports the rear surface thereof.

When the caliper brake is thus configured, the pressure of the vacuum booster acting as the brake pedal is depressed causes the brake oil of the master cylinder to flow into the wheel cylinder 111 of the caliper body 110 Inject.

At this time, the piston 113 advances by the injected brake oil, and closely contacts the brake pad 130 located on the inner side with the disk. The brake pad 130 is brought into close contact with the disk and the caliper body 110 reacts backward against the advance action of the piston 113 by the pressure of the brake oil. At this time, the caliper body 110 slides and moves backward. The fork portion 140 formed at the lower portion of the caliper body 110 moving backward closely contacts the outer side surface of the disk with the brake pad 130 located on the outer side.

In the above process, the contact of the brake pad 130 with the disc causes the rotational motion of the disc to stop or reduce the rotational speed through frictional force.

2 and 3, the conventional automotive caliper brake 100 includes a piston 113 and a piston 113 for restoring the piston 113 to a substantially original position after the piston 113 is pressed. A seal 151 made of an elastic material is provided between the cylinders 111. The seal 151 is mounted in a seal mounting groove 152 formed in a portion of the cylinder 111 in contact with the piston 113. [ 3, the seal mounting groove 152 includes a front end wall 161 which forms a side wall at the tip thereof with reference to a direction in which the piston 113 is pressed (see the arrow in FIG. 3) A rear end wall 162 forming a side wall, and a bottom surface 163. The distal end wall 161 includes an inner surface 161a on which the seal 151 contacts and an end surface 161b on which the piston 113 abuts. (161c) is chamfered by an oblique line. Therefore, the seal 151 is deformed in the pressing direction of the piston 113 while the piston 113 is pressed, and when the press is released, the deformed seal 151 is restored and the piston 113 is restored to the substantially position As a result, a gap is created between the piston 113 and the brake pad 130, and the brake pad 130, which has been in contact with the disk, is opened by this interval, and dragging due to contact with the disk can be prevented have.

However, during the pressing of the piston 113, the seal 151 is moved in a direction in which the seal 151 is pressed due to friction with the outer peripheral surface of the piston 113. The edge 161c of the end wall 161 is chamfered, The deformation amount of the seal 151 becomes relatively small in the seal mounting groove 152 having a large space.

Further, in order to provide sufficient restoring force to the piston 113 by sufficiently deforming the seal 151 in the seal mounting groove 152 having a large space, the piston 113 is moved in the pressing direction more, There is a problem that a lot of liquid is consumed.

Since the edge 161c of the tip end wall 161 is chamfered by a diagonal line, the corner 161c and the inner side face 161a have an angular shape between the corner 161c and the end face 161b, There is a problem that the seal 151 is deformed and torn.

1. Korean Published Patent Application No. 10-2009-0011466 (Published on February 02, 2009)

A technical object of the present invention is to provide a seal mounting structure for an automotive caliper brake in which damage to a seal can be prevented in advance even when a brake fluid is used in a small amount and the drag phenomenon can be minimized.

In order to achieve the above object, a seal mounting structure for an automotive caliper brake according to an embodiment of the present invention is a seal mounting structure for an automotive caliper brake in which a seal is mounted between a piston and a cylinder, A seal mounting groove formed in the portion; A leading end wall forming a leading end boundary portion of the seal mounting groove with respect to a direction in which the piston is pressed; A rear end wall forming a rear end boundary of the seal mounting groove with reference to a direction in which the piston is pressed; And a bottom surface forming the bottom of the seal mounting groove, wherein the end wall comprises: an inner surface constituting a portion in contact with the seal; And an end surface constituting a portion in contact with the piston, and the edge between the inner surface and the end surface is chamfered in a convex round shape.

The rounded corner may be formed in a non-contact state with the piston.

The volume of the tip end wall chamfered in the round shape can be made larger than the volume of the tip end wall in the chamfered state and smaller than the volume of the tip end wall in the state before chamfering.

As described above, the seal mounting structure of the caliper brake for an automobile according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, since the edge of the end wall constituting the seal mounting groove is chamfered into a convex round shape, the volume of the seal mounting groove can be reduced as compared with the existing chamfered oblique technology, The drag phenomenon can be minimized even if the liquid is used in a small amount and the seal can be prevented from being damaged due to the round shape.

1 is a front view schematically showing a conventional caliper brake for an automobile.
Fig. 2 is a cross-sectional view showing the caliper brakes of Fig. 1 cut away. Fig.
3 is an enlarged cross-sectional view of the "A" portion of FIG.
4 is a cross-sectional view schematically showing a seal mounting structure of a caliper brake for an automobile according to an embodiment of the present invention.
5 is an enlarged cross-sectional view of the main portion of the "B" portion of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Fig. 4 is a cross-sectional view schematically showing a seal mounting structure of a caliper brake for an automobile according to an embodiment of the present invention, and Fig. 5 is an enlarged cross-sectional view of a portion "B" of Fig.

The seal mounting structure of a caliper brake for an automobile according to an embodiment of the present invention is characterized in that a caliper brake of an automobile (see FIG. 2) in which a seal (151 in FIG. 2) is mounted between a piston And includes a seal mounting groove 252, a front end wall 261, a rear end wall 262, and a bottom surface 263, as shown in Figs. 4 and 5.

The seal mounting groove 252 is formed at a portion of the cylinder 111 that is in contact with the piston 113 and a seal for providing a restoring force to the piston 113 is mounted in the seal mounting groove 252.

The tip end wall 261 forms the tip end boundary portion of the seal mounting groove 252 on the basis of the direction in which the piston 113 is pressed (see the arrow in FIG. 4), and the rear end wall 262 forms a boundary portion in the direction in which the piston 113 is pressed And the bottom surface 263 forms the bottom of the seal mounting groove 252. The bottom surface of the seal mounting groove 252 corresponds to the bottom surface of the seal mounting groove 252.

2) is deformed in the pressing direction of the piston 113, and when the pressing is released, the deformed seal 151 is restored while the piston 113 (FIG. 2) The brake pads 130 which have been in contact with the discs are spaced apart from each other by a distance between the pistons 113 and the brake pads 130 and are dragged by the contact with the discs drag) phenomenon can be prevented.

4 and 5, the distal end wall 261 will be described in more detail.

4 and 5, the tip end wall 261 has an inner surface 261a constituting a portion in contact with the seal 151 and an end surface 261b constituting a portion in contact with the piston 113 . Particularly, the edge 261c between the inner surface 261a and the end surface 261b is chamfered in a convex round shape.

Therefore, since the edge 261c of the end wall 261 forming the seal mounting groove 252 is chamfered in a rounded convex shape, the seal mounting groove 252 has a volume The drag phenomenon can be minimized even if the brake fluid is used in a small amount, and the seal 151 can be prevented from being damaged due to the round shape.

More specifically, as the edge 261c of the tip end wall 261 is chamfered into a convex round shape, the seal mounting groove 252 becomes smaller as compared with the technique of chamfering the existing oblique line, The deformation amount of the seal 151 becomes relatively large in the seal mounting groove 252 in which the space is relatively small while the seal 151 is moved in the direction in which the seal 151 is pressed due to friction with the outer peripheral surface of the piston 113 .

Further, since the edge 261c of the tip end wall 261 is chamfered in a convex round shape, the volume of the edge 261c of the leading end wall 261 is relatively larger than that of the prior art, Thereby achieving reduction of the brake fluid.

As the edge 261c of the tip end wall 261 is chamfered into a convex round shape, there is no angular shape between the edge 261c and the inner side 261a and between the edge 261c and the end face 261b , The seal 151 can be prevented from being torn as it is deformed.

In addition, the above-mentioned rounded corner 261c can be formed in a non-contact state with the piston 113. [ In other words, it is possible to minimize the phenomenon that the contact between the corner 261c and the piston 113 is eliminated and the seal 151 is not caught between the edge 261c and the piston 113 and does not come off.

5, the volume of the rounded tip end wall 261 is larger than the volume of the tip end wall 161 chamfered by the diagonal line of the conventional technique, and the tip end wall D See FIG. 4). The space of the seal mounting groove 252 is reduced as compared with the conventional technology and the space of the seal mounting groove 252 is reduced as compared with the conventional technology, The deformation amount can be maximized.

As described above, the seal mounting structure of a caliper brake for an automobile according to an embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, since the edge 261c of the end wall 261 forming the seal mounting groove 252 is chamfered in a rounded convex shape, compared with the conventional chamfering technique, The volume of the mounting groove 252 can be reduced, so that dragging can be minimized even if the brake fluid is used in a small amount, and the seal can be prevented from being damaged due to the round shape.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

111: cylinder 113: piston
151: Seal 252: Seal mounting groove
261: end wall 261a: inner side
261b: end face 261c: corner
262: rear end wall 263: bottom surface

Claims (3)

A seal mounting structure for an automotive caliper brake in which a seal is mounted between a piston and a cylinder,
A seal mounting groove formed in a portion of the cylinder in contact with the piston;
A leading end wall forming a leading end boundary portion of the seal mounting groove with respect to a direction in which the piston is pressed;
A rear end wall forming a rear end boundary of the seal mounting groove with reference to a direction in which the piston is pressed;
And a bottom surface constituting the bottom of the seal mounting groove,
The end wall
An inner surface constituting a portion in contact with the seal; And
And an end surface constituting a portion in contact with the piston,
Wherein the corner between the inner side surface and the end surface is chamfered in a convex round shape. The method of claim 1,
Wherein the rounded corner is formed in a non-contact state with the piston. The method of claim 1,
Wherein the volume of the end wall chamfered in the round shape is larger than the volume of the end wall chamfered in an oblique direction and smaller than the volume of the end wall in the state before chamfering.
KR20130119956A 2013-10-08 2013-10-08 Seal mounting structure of caliper brake for vehicle KR20150041430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130119956A KR20150041430A (en) 2013-10-08 2013-10-08 Seal mounting structure of caliper brake for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130119956A KR20150041430A (en) 2013-10-08 2013-10-08 Seal mounting structure of caliper brake for vehicle

Publications (1)

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KR20150041430A true KR20150041430A (en) 2015-04-16

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KR20130119956A KR20150041430A (en) 2013-10-08 2013-10-08 Seal mounting structure of caliper brake for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200119598A (en) 2019-04-10 2020-10-20 평화오일씰공업주식회사 Durability improved oil seal for car break module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200119598A (en) 2019-04-10 2020-10-20 평화오일씰공업주식회사 Durability improved oil seal for car break module

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