CN103899690A - Pull-arm-type brake with gap self-adjusting function - Google Patents
Pull-arm-type brake with gap self-adjusting function Download PDFInfo
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- CN103899690A CN103899690A CN201410162799.4A CN201410162799A CN103899690A CN 103899690 A CN103899690 A CN 103899690A CN 201410162799 A CN201410162799 A CN 201410162799A CN 103899690 A CN103899690 A CN 103899690A
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- brake
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Abstract
The invention discloses a pull-arm-type brake with a gap self-adjusting function. The brake comprises a brake drum (1), a brake pump (2), a brake shoe assembly (3), a parking pull arm (4), a self-adjusting driving plate (5) and a gap self-adjusting assembly. The parking pull arm (4) and the self-adjusting driving plate (5) are hinged to a pull arm pin (10). The pull arm pin (10) is fixed to the brake shoe assembly (3). The gap self-adjusting assembly comprises a first installation piece (7), an intermediate connecting piece (8) and a second installation piece (9). The intermediate connecting piece (8) is composed of an unthreaded rod (81), a ratchet wheel (82) and a screw shaft (83) in an integrated mode, and the unthreaded rod (81), the ratchet wheel (82) and the screw shaft (83) are connected in sequence from left to right. The unthreaded rod (81) stretches into a supporting unthreaded hole sleeve (72). The screw shaft (83) is in screw-thread fit with a supporting threaded sleeve (91). A hook part of the self-adjusting driving plate (5) is matched with the ratchet wheel (82) in the middle of the intermediate connecting piece (8). When the self-adjusting driving plate (5) drives the ratchet wheel (82) to rotate, the length of the gap self-adjusting assembly is increased. After a friction plate is abraded, the gap between the friction plate and the brake drum can be automatically adjusted to be in the optimum size.
Description
Technical field
The present invention relates to Brake for vehicle system, belong to mechanical brake brake assembly technical field, be specifically related to a kind of draw-arm break.
Background technique
Braking system is the critical component that is related to safety of person vehicle, break belongs to most important safety, critical component in all moving vehicles, the braking system of automobile is divided into various structures form according to the requirement such as reliable, laborsaving, and draw-arm break is a kind of structure conventional in mechanical brake break.
In order to keep good retardation efficiency, between the friction plate in brake shoe assembly and brake drum, to there is a best clearance value.Along with friction disc wear, the gap between brake shoe assembly and brake drum increases, and need to have the mechanism of an adjusting play.
Existing non-self-regulated draw-arm break, its self-regulated gap assembly comprises self-regulated plate and the ratchet cover plate, by stirring self-regulated plate, slide block is combined with the next tooth of the ratchet cover plate.This structure needs artificial moving tooth adjusting play, could meet safety traffic needs, often will be through adjusting and friction plate could be used to the limit for several times, and very trouble; The gap that veteran old driver adjusts may be more reasonable, and the gap that young driver recalls is probably not fully up to expectations.Institute's adjust the play is too small or at all very close to each other, and the consequence causing is to drag to stop, and moment of torsion, the oil consumption of meaningless increase vehicle are high, friction plate consumption fast, shorten the adverse effects such as vehicle service life; If the excesssive gap of adjusting, will increase brake petal and parking hand lever distance, likely cannot meet parking in action radius, there is potential safety hazard.
Summary of the invention
The present invention aims to provide a kind of draw-arm break with self-regulated gap function, and when after friction disc wear, the optimum state is arrived in the gap that can automatically adjust between brake drum.
For this reason, the technical solution adopted in the present invention is: a kind of draw-arm break with self-regulated gap function, comprise brake drum (1), brake pump (2), brake shoe assembly (3), parking torque arm (4), self-regulated plate (5) and self-regulated gap assembly, described brake shoe assembly (3) comprises left brake shoe and right braking hoof, left, right braking hoof is by shoe spring (11) tension, it is characterized in that: described parking torque arm (4) is hinged on torque arm pin (10) with self-regulated plate (5), described torque arm pin (10) is fixed on brake shoe assembly (3), described self-regulated gap assembly comprises the first assembling set (7) from left to right setting gradually, intermediate connector (8) and the second assembling set (9), described the first assembling set (7) supports fixture block (71) by first on the left of being positioned at and is positioned at support unthreaded hole cover (72) the one formation on right side, described first supports fixture block (71) is stuck on left brake shoe by left brake shoe clamping breach (71a), described the second assembling set (9) supports fixture block (92) one formation by being positioned at the support swivel nut (91) in left side and being positioned at second of right side, described second supports fixture block (92) is stuck in right braking hoof and parking torque arm (4) by right braking hoof and torque arm clamping breach (92a), described intermediate connector (8) is by the polished rod being from left to right connected successively (81), ratchet (82) and screw axis (83) one form, polished rod (81) stretches into and supports in unthreaded hole cover (72), screw axis (83) and support swivel nut (91) screw-thread fit, the hook portion of described self-regulated plate (5) is mated with the ratchet (82) at intermediate connector (8) middle part, in the time that self-regulated plate (5) is stirred ratchet (82) rotation, the length of self-regulated gap assembly increases.
The working principle of said structure is such: when after friction disc wear, while needing parking, parking torque arm is rotated around torque arm pin under the effect of wire-pulling force, self-regulated plate and parking torque arm connect in aggregates by spring, follow and rotate, self-regulated plate drives ratchet to rotate, thereby drives the second support fixture block to move right, second supports fixture block promotion right braking hoof moves right, and realizes the object of automatically adjusting friction plate and brake drum gap.In the time that the gap of friction plate and brake drum increases, when brake shoe released amount exceedes certain limit, stay cord can be moved self-regulated plate to the position with the next indented joint of ratchet, the rotation of drive intermediate connector, thereby the length that increases self-regulated gap assembly, moves brake shoe position, recover normal clearance.
Be preferably, totally two of described shoe springs (11), between the upper and lower every setting, the shoe spring (11) that is positioned at top is enclosed within outside the assembly of self-regulated gap.Optimize layout, saved space.
The invention has the beneficial effects as follows: avoided because of gap is too small or at all very close to each other caused dragging stop, the series of problems such as the vehicle torque of stopping brought increases, oil consumption is high, friction plate consumption fast because dragging, vehicle service life shortening; And the brake petal bringing because of excesssive gap and parking hand lever are apart from increase, guarantee vehicle parking in action radius, have improved driving safety.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural representation of self-regulated gap assembly.
Fig. 4 is the structural representation of intermediate connector.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the invention will be further described:
In conjunction with Fig. 1---shown in Fig. 2, there is a draw-arm break for self-regulated gap function, formed by brake drum 1, brake pump 2, brake shoe assembly 3, parking torque arm 4, self-regulated plate 5, self-regulated gap assembly, shoe spring 11, torque arm pin 10 and stay cord guide pad 6 etc.Brake shoe assembly 3 comprises left brake shoe, right braking hoof, and the arranged outside of each brake shoe has friction plate.Left and right brake shoe is strained by shoe spring 11.On stay cord guide pad 6, be provided with stay cord via hole 6a, pass through for stay cord, stay cord is fixed on the lower end of parking torque arm 4 through stay cord guide pad 6.
Parking torque arm 4 is hinged on torque arm pin 10 with self-regulated plate 5, and parking torque arm 4 is solidly fixed with self-regulated plate 5, and self-regulated plate 5 is rotated with parking torque arm 4, in addition, also comprises self-regulated plate return spring.Torque arm pin 10 is fixed on brake shoe assembly 3.
As shown in Figure 3, Figure 4, self-regulated gap assembly is made up of the first assembling set 7 from left to right setting gradually, intermediate connector 8 and the second assembling set 9.The first assembling set 7 overlaps 72 one by the first support fixture block 71 that is positioned at left side with the support unthreaded hole that is positioned at right side and forms, and on the first support fixture block 71, be provided with left brake shoe clamping breach 71a, shown in Fig. 1, be stuck on left brake shoe by left brake shoe clamping breach 71a.The second assembling set 9 is made up of with the second support fixture block 92 one that are positioned at right side the support swivel nut 91 that is positioned at left side, and on the second support fixture block 92, be provided with right braking hoof and torque arm clamping breach 92a, shown in Fig. 1, be stuck in right braking hoof and parking torque arm 4 by right braking hoof and torque arm clamping breach 92a.Intermediate connector 8 is made up of the polished rod 81 being from left to right connected successively, ratchet 82 and screw axis 83 one, and polished rod 81 stretches into and supports in unthreaded hole cover 72, screw axis 83 and support swivel nut 91 screw-thread fit.The hook portion of self-regulated plate 5 is mated with the ratchet 82 at intermediate connector 8 middle parts, and in the time that self-regulated plate 5 is stirred ratchet 82 and rotated, the length of self-regulated gap assembly increases.
Totally two of shoe springs 11, between the upper and lower every setting, the shoe spring 11 that is positioned at top is enclosed within outside the assembly of self-regulated gap.
The ratchet 82 of stirring intermediate connector 8 by self-regulated plate 5 rotates, thereby increases the length of self-regulated gap assembly, and the two ends of self-regulated gap assembly are stuck on brake shoe assembly 3, and brake shoe assembly 3 is shifted, with friction compensation pad wear gap.
Claims (2)
1. one kind has the draw-arm break of self-regulated gap function, comprise brake drum (1), brake pump (2), brake shoe assembly (3), parking torque arm (4), self-regulated plate (5) and self-regulated gap assembly, described brake shoe assembly (3) comprises left brake shoe and right braking hoof, left, right braking hoof is by shoe spring (11) tension, it is characterized in that: described parking torque arm (4) is hinged on torque arm pin (10) with self-regulated plate (5), described torque arm pin (10) is fixed on brake shoe assembly (3), described self-regulated gap assembly comprises the first assembling set (7) from left to right setting gradually, intermediate connector (8) and the second assembling set (9), described the first assembling set (7) supports fixture block (71) by first on the left of being positioned at and is positioned at support unthreaded hole cover (72) the one formation on right side, described first supports fixture block (71) is stuck on left brake shoe by left brake shoe clamping breach (71a), described the second assembling set (9) supports fixture block (92) one formation by being positioned at the support swivel nut (91) in left side and being positioned at second of right side, described second supports fixture block (92) is stuck in right braking hoof and parking torque arm (4) by right braking hoof and torque arm clamping breach (92a), described intermediate connector (8) is by the polished rod being from left to right connected successively (81), ratchet (82) and screw axis (83) one form, polished rod (81) stretches into and supports in unthreaded hole cover (72), screw axis (83) and support swivel nut (91) screw-thread fit, the hook portion of described self-regulated plate (5) is mated with the ratchet (82) at intermediate connector (8) middle part, in the time that self-regulated plate (5) is stirred ratchet (82) rotation, the length of self-regulated gap assembly increases.
2. there is according to claim 1 the draw-arm break of self-regulated gap function, it is characterized in that: totally two of described shoe springs (11), every setting, the shoe spring (11) that is positioned at top is enclosed within outside the assembly of self-regulated gap between the upper and lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410162799.4A CN103899690A (en) | 2014-04-22 | 2014-04-22 | Pull-arm-type brake with gap self-adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410162799.4A CN103899690A (en) | 2014-04-22 | 2014-04-22 | Pull-arm-type brake with gap self-adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103899690A true CN103899690A (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410162799.4A Pending CN103899690A (en) | 2014-04-22 | 2014-04-22 | Pull-arm-type brake with gap self-adjusting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899690A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259856A (en) * | 2019-07-23 | 2019-09-20 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
| CN110285159A (en) * | 2019-07-23 | 2019-09-27 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6234281B1 (en) * | 2000-11-07 | 2001-05-22 | Robert Bosch Corporation | Attachment of a brake cable with an actuator of a parking brake |
| CN1528626A (en) * | 2003-09-28 | 2004-09-15 | 重庆红宇精密工业有限责任公司 | Self-adjusting drum brake at parking |
| CN101412398A (en) * | 2008-11-25 | 2009-04-22 | 辽宁曙光汽车集团股份有限公司 | Hydraulic drum brake with upper and lower double pushrods parking mechanism |
| CN201779179U (en) * | 2010-04-29 | 2011-03-30 | 比亚迪股份有限公司 | Locomotive brake |
| CN201963786U (en) * | 2011-01-10 | 2011-09-07 | 山东遨游汽车制动系统股份有限公司 | Brake clearance self-regulating device |
| CN203796824U (en) * | 2014-04-22 | 2014-08-27 | 重庆市璧山宏向汽配有限公司 | Drag arm type brake with clearance self-adjusting function |
-
2014
- 2014-04-22 CN CN201410162799.4A patent/CN103899690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6234281B1 (en) * | 2000-11-07 | 2001-05-22 | Robert Bosch Corporation | Attachment of a brake cable with an actuator of a parking brake |
| CN1528626A (en) * | 2003-09-28 | 2004-09-15 | 重庆红宇精密工业有限责任公司 | Self-adjusting drum brake at parking |
| CN101412398A (en) * | 2008-11-25 | 2009-04-22 | 辽宁曙光汽车集团股份有限公司 | Hydraulic drum brake with upper and lower double pushrods parking mechanism |
| CN201779179U (en) * | 2010-04-29 | 2011-03-30 | 比亚迪股份有限公司 | Locomotive brake |
| CN201963786U (en) * | 2011-01-10 | 2011-09-07 | 山东遨游汽车制动系统股份有限公司 | Brake clearance self-regulating device |
| CN203796824U (en) * | 2014-04-22 | 2014-08-27 | 重庆市璧山宏向汽配有限公司 | Drag arm type brake with clearance self-adjusting function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259856A (en) * | 2019-07-23 | 2019-09-20 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
| CN110285159A (en) * | 2019-07-23 | 2019-09-27 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
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Application publication date: 20140702 |