CN203868202U - Automotive wedge type brake clearance automatic adjustor - Google Patents
Automotive wedge type brake clearance automatic adjustor Download PDFInfo
- Publication number
- CN203868202U CN203868202U CN201420330566.6U CN201420330566U CN203868202U CN 203868202 U CN203868202 U CN 203868202U CN 201420330566 U CN201420330566 U CN 201420330566U CN 203868202 U CN203868202 U CN 203868202U
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- China
- Prior art keywords
- guide block
- internal gear
- main casing
- helical worm
- type brake
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Abstract
The utility model discloses an automotive wedge type brake clearance automatic adjustor. The automotive wedge type brake clearance automatic adjustor comprises a main case and a clutch. The clutch comprises an inclined guide block, a torsion spring and a spiral worm, wherein the inclined guide block is connected with the main case through a positioning screw and connected with the spiral worm through a connecting screw, the torsion spring is connected inside the inner hole of the connecting portion of the inclined guide block and the spiral worm, and the spiral worm is connected with a push rod through threads; the end portion of the push rod is provided with an elastic snapping ring; one end of the spiral worm is provided with an internal gear which is in clearance fit with the spiral worm through a spline; one end of the internal gear is provided with a pressure spring, and the outer surface of the internal gear is in contact with a friction conical surface; both end of the main case is provided with an outer dustproof cover and an inner dustproof cover, the upper end of the main case is provided with a touch position cover in contact with a power device. The two dustproof covers effectively avoid damage to braking performance due to dust entering inside when of an outer dustproof sleeve is damaged. When the inclination of the inclined guide block is 7 degrees, and the clearance of a wedge type brake is 1.3 millimeters, the automotive wedge type brake clearance automatic adjustor can achieve the aim of enlarging the stroke under the premise that the diameter of the inclined guide block keeps unchanged, thereby effectively avoiding drag abrasion.
Description
Technical field
The utility model relates to a kind of modulator, especially relates to a kind of automobile wedge-type brake clearance automatic modulator, belongs to automobile manufacturing field.
Background technique
The reliability of brake system of car is the key element of vehicle safety travel.The general Pneumatic braking device that comprises qigong push rod, adjusts arm, break (chief component element comprises camshaft, cam, brake shoe assembly, brake drum) that uses of current heavy-duty commercial vehicle and motorbus.Owing to needing frequent braking in running process, can make break heating, brake drum, the expansion such as brake shoe assembly that brake lining is housed can make brake clearance diminish; And long-term use meeting becomes large because brake pad wear can cause brake clearance.If adjusted not in time, can cause a little stopping, drag stop, the phenomenon such as brake drum mistake circle, brake drum be full of cracks, cause hidden danger to driving.
At present, the setting gap of the vehicle brake drum of the self-adjustment structure of existing wedge brake and brake bush is 0.8～1 millimeter, and when braking is frequent, severity of braking is when large, brake drum temperature reaches 400 while spending, and gap will adjust to 0.8～1 automatically; But brake drum is cooled to will occur that brake drum friction plate gap is zero after normal temperature, break is implemented slight braking, " dawdling " phenomenon of namely often saying to vehicle all the time; If now will cause brake drum, wheel, tyre temperature to raise gradually, very easily blow out, the severe accident such as tire is on fire.
Domestic overload of vehicle is general, and in the time that road conditions are complicated, severity of braking increases, and the temperature of brake drum can be more; When temperature reaches 400 while spending, the brake drum swell diameter that diameter is 400 millimeters reaches more than 2 millimeters, occurs for fear of dangerous situation, is set as 1.3 millimeter and can effectively avoids the phenomenon of dawdling between wedge brake; But so the stroke of self-regulated device two ends piston must be strengthened in the gap of scope, under the constant prerequisite of the oblique guide block diameter of clearance self-regulating device, want to strengthen stroke, must adjust gradient.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, and a kind of automobile wedge-type brake clearance automatic modulator is provided, and increases the gradient of oblique guide block, makes it in the time that severity of braking increases, effectively reduce the phenomenon of dawdling; Set up twice dust-proof cover simultaneously, effectively increased the dust-proof effect of equipment.
To achieve these goals, the utility model is achieved through the following technical solutions:
A kind of automobile wedge-type brake clearance automatic control regulator, comprises main casing and clutch, and clutch is positioned at the transverse holes of main casing; It is characterized in that, clutch comprises oblique guide block, turn-knob spring and helical worm; Described oblique guide block is fixedly connected with main casing by positioning screwn, is connected by attachment screw and helical worm; Described turn-knob spring is positioned at the endoporus place of oblique guide block and helical worm connection part; Described helical worm has internal thread, is threaded connection mode and has externally threaded push rod and be connected, and the end of push rod has elastic collar; There is internal gear one end of described helical worm, and internal gear is by spline and helical worm Spielpassung, and one end of internal gear is flexibly connected stage clip, and the outer surface of internal gear coordinates and contacts with the cone of friction of main casing; The two ends of main casing are provided with dust-proof cover, and dust-proof cover comprises outer dust-proof cover and interior dust-proof cover; The gradient of described oblique guide block is 7 degree.
Above-mentioned regulator also comprises that touching position covers, and is positioned at the upper end of main casing, touches position cover and contacts and be used in conjunction with power plant.
Above-mentioned power plant are positioned at the longitudinal hole of main casing, comprise retainer and are positioned at the roller that retainer draw-in groove is fixedly installed, and roller rolls and coordinates with the inclined-plane of oblique guide block; Described retainer upper end is connected with wedge shaped ejector pin, and the outer cover of wedge shaped ejector pin has return spring, and the lower end of return spring contacts with tactile position cover.
The oblique guide block gradient of the utility model automatic control regulator is 7 degree, reach more than 2 millimeters when brake drum temperature reaches 400 degree, swell diameter, wedge brake gap is while being set as 1.3 millimeter, can meet the object that strengthens stroke under the prerequisite that oblique guide block diameter is constant, effectively avoid the phenomenon of dawdling; The utlity model has dual dust-proof cover, while effectively having avoided outer dirt-proof boot to damage, extraneous dust enters self-regulated device internal sabotage internal lubrication, causes the dumb even stuck situation of piston movement to occur, and has increased the Security of driving.
Brief description of the drawings
Fig. 1: the overall structure schematic diagram of the utility model automatic control regulator;
Fig. 2: the structural representation of the power plant that the utility model regulator is used in conjunction with;
Fig. 3: the interior dust-proof cover structure schematic diagram of the utility model regulator;
Wherein: 1, main casing, 2, clutch, 3, oblique guide block, 4, turn-knob spring, 5, helical worm, 6, push rod, 7, positioning screwn, 8, attachment screw, 9, stage clip, 10, internal gear, 11, cone of friction, 12, elastic collar, 13, outer dust-proof cover, 14, interior dust-proof cover, 15, power plant, 16, roller, 17, retainer, 18, wedge shaped ejector pin, 19, return spring, 20, touch position cover.
Embodiment
Below in conjunction with accompanying drawing, the utility model device is described in detail.
As shown in figures 1 and 3, a kind of automobile wedge-type brake clearance automatic control regulator, comprises main casing 1 and clutch 2, and clutch is positioned at the transverse holes of main casing; Clutch comprises oblique guide block 3, turn-knob spring 4 and helical worm 5, and tiltedly the gradient of guide block is 7 degree; Tiltedly guide block is fixedly connected with main casing by positioning screwn 7, is connected by attachment screw 8 and helical worm; Turn-knob spring is positioned at the endoporus place of oblique guide block and helical worm connection part, and helical worm has internal thread, is threaded connection mode and has externally threaded push rod 6 to connect, and the end of push rod has elastic collar 12; There is internal gear 10 one end of helical worm, and internal gear is by spline and helical worm Spielpassung, and one end of internal gear is flexibly connected stage clip 9, and the outer surface of internal gear coordinates and contacts with the cone of friction of main casing 11; The two ends of main casing are provided with outer dust-proof cover 13 and interior dust-proof cover 14.The upper end of main casing has the position of touching cover 20, is used for contacting and being used in conjunction with power plant 15.
As shown in Figure 2, power plant 15 are positioned at the longitudinal hole of main casing 1, comprise retainer 17 and are positioned at the roller 16 that retainer draw-in groove is fixedly installed, and roller rolls and coordinates with the inclined-plane of oblique guide block; Described retainer upper end is connected with wedge shaped ejector pin 18, and the outer cover of wedge shaped ejector pin has return spring 19, and the lower end of return spring contacts with tactile position cover 20.
Working principle of the present utility model is: in the time that the gap between brake drum and friction plate is no more than setting gap, helical worm axial motion, distance of relative movement between helical worm, internal gear is no more than the gap between helical worm and spline, be that internal gear is static, and do not slide between cone of friction, in the time that the gap between brake drum and friction plate exceedes setting gap, helical worm is outwards motion (while braking) vertically, distance of relative movement between helical worm, internal gear has exceeded the gap between helical worm and spline, due to the locking effect of clutch, tiltedly guide block, helical worm can not rotate mutually, and helical worm can drive internal gear customer service frictional force to produce rotational slide along cone of friction, helical worm is motion (when brake off) inwards vertically, helical worm, distance of relative movement between internal gear has exceeded the gap between helical worm and spline, because the locking of clutch is removed, tiltedly guide block, helical worm can rotate mutually, the frictional force that the running torque that the frictional force of internal gear and cone of friction can produce by rotation spline drives helical worm to overcome overrunning clutch is rotated, because push rod can not rotate, so helical worm, rotatablely moving between push rod can only produce and move axially, outwards move a certain distance by push rod, that is eliminate the brake clearance between brake drum and friction plate.
The oblique guide block gradient of the utility model automatic control regulator is 7 degree, in the time that the rising of brake drum temperature, wedge brake gap are 1.3 millimeters, can meet the object that strengthens stroke under the prerequisite that oblique guide block diameter is constant, effectively avoids the phenomenon of dawdling; The utlity model has dual dust-proof cover, while effectively having avoided outer dirt-proof boot to damage, dust enters inside and causes the dumb even stuck situation of piston movement to occur, and has increased the Security of driving.
Claims (3)
1. an automobile wedge-type brake clearance automatic control regulator, comprises main casing (1) and clutch (2), and clutch is positioned at the transverse holes of main casing; It is characterized in that, clutch comprises oblique guide block (3), turn-knob spring (4) and helical worm (5); Described oblique guide block is fixedly connected with main casing by positioning screwn (7), is connected by attachment screw (8) and helical worm; Described turn-knob spring is positioned at the endoporus place of oblique guide block and helical worm connection part; Described helical worm has internal thread, is threaded connection mode and has externally threaded push rod (6) and be connected, and the end of push rod has elastic collar (12); There is internal gear (10) one end of described helical worm, internal gear is by spline and helical worm Spielpassung, one end of internal gear is flexibly connected stage clip (9), and the outer surface of internal gear coordinates and contacts with the cone of friction of main casing (11); The two ends of main casing are provided with dust-proof cover, and dust-proof cover comprises outer dust-proof cover (13) and interior dust-proof cover (14); The gradient of described oblique guide block is 7 degree.
2. automatic control regulator according to claim 1, is characterized in that, described regulator also comprises that touching position covers (20), is positioned at the upper end of main casing (1), touches position cover and contacts and be used in conjunction with power plant (15).
3. automatic control regulator according to claim 2, it is characterized in that, described power plant (15) are positioned at the longitudinal hole of main casing (1), comprise retainer (17) and be positioned at the roller (16) that retainer draw-in groove is fixedly installed, roller rolls and coordinates with the inclined-plane of oblique guide block; Described retainer upper end is connected with wedge shaped ejector pin (18), and the outer cover of wedge shaped ejector pin has return spring (19), and the lower end of return spring contacts with tactile position cover (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330566.6U CN203868202U (en) | 2014-06-19 | 2014-06-19 | Automotive wedge type brake clearance automatic adjustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420330566.6U CN203868202U (en) | 2014-06-19 | 2014-06-19 | Automotive wedge type brake clearance automatic adjustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868202U true CN203868202U (en) | 2014-10-08 |
Family
ID=51649159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420330566.6U Active CN203868202U (en) | 2014-06-19 | 2014-06-19 | Automotive wedge type brake clearance automatic adjustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107995A (en) * | 2021-04-09 | 2021-07-13 | 瑞立集团瑞安汽车零部件有限公司 | One-way clearance adjuster for brake |
-
2014
- 2014-06-19 CN CN201420330566.6U patent/CN203868202U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107995A (en) * | 2021-04-09 | 2021-07-13 | 瑞立集团瑞安汽车零部件有限公司 | One-way clearance adjuster for brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170926 Address after: 266200 Hua Quan Road, Longquan office, Qingdao, Shandong, Jimo Patentee after: Qingdao Linda Automobile New Technology Development Co Ltd Address before: 266106, Shandong province Qingdao city Chengyang District Fu Fu Town Street home community Patentee before: Qingdao Zhiyuan Auto Parts Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180122 Address after: No. 1 Zhengyang East Road, Xi Fu town street, Chengyang District, Qingdao, Shandong Patentee after: Qingdao burick Automobile Technology Co Ltd Address before: 266200 Hua Quan Road, Longquan office, Qingdao, Shandong, Jimo Patentee before: Qingdao Linda Automobile New Technology Development Co Ltd |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211213 Address after: 266106 Qianjin community, Xifu Town Street, Chengyang District, Qingdao City, Shandong Province (north of Wangsha Road) Patentee after: Qingdao boruike Automobile Technology Co.,Ltd. Address before: 266000 No.1 Zhengyang East Road, Xifu Town Street, Chengyang District, Qingdao City, Shandong Province Patentee before: QINGDAO BURUIKE AUTOMOTIVE TECHNOLOGY CO.,LTD. |