CN2883782Y - Automotive brake with brake gap self-regulating gear - Google Patents
Automotive brake with brake gap self-regulating gear Download PDFInfo
- Publication number
- CN2883782Y CN2883782Y CN 200520140075 CN200520140075U CN2883782Y CN 2883782 Y CN2883782 Y CN 2883782Y CN 200520140075 CN200520140075 CN 200520140075 CN 200520140075 U CN200520140075 U CN 200520140075U CN 2883782 Y CN2883782 Y CN 2883782Y
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- brake
- skewed slot
- ratchet
- positioning supports
- clearance self
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- Expired - Lifetime
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Abstract
The utility model relates to an automobile brake with a brake clearance self-adjusting mechanism, which adopts the technical proposal that: the utility model comprises a brake plate, a plurality of brake shoes and a sandwiched film, a big return spring, a small return spring, a straight flute positioning support, a flume positioning support, a semicircle block, a brake clearance self-adjusting mechanism and a sensor unit; wherein the brake clearance self-adjusting mechanism and the straight flute positioning support and the flume positioning support are arranged on one side of the brake plate; the two semicircle blocks are sliding connected with the straight flute positioning support and the flume positioning support; one end of the brake shoes is articulated to the semicircle block, and the other end is crimped to the brake clearance self-adjusting mechanism; the brake shoes are clamped on both sides of the brake plate respectively by the sandwiched film; the big and the small return springs are connected with the brake shoes respectively; the sensor is connected with the brake shoes and the dust cap is connected with the brake plate. The utility model has the advantages of automatic adjustment function of space, increased traffic safety, simple structure, high brake efficiency and low cost, convenient facing replacement and braking deviation avoided.
Description
Technical field
The utility model relates to automotive brake, more particularly, relates to a kind of automotive brake of band brake clearance self-regulating mechanism.
Background technique
At present on the truck of China, the passenger vehicle institute generally the drum brake of use all be the cammingly drum brake, its maximum shortcoming is that brake clearance needs manual adjustment, brake clearance increases after automobile is exercised a period of time, experienced driver can feel that brake is comparatively weak, meets the requirements of the gap by manual adjustment then.This adjustment is a foundation with driver's technical level on the one hand, and this on the other hand adjustment lags behind, and the travel safety of braking device and reliability are all reduced greatly.In order to improve the safety of driving, country has put into effect new relevant laws and regulations, require all vehicle braked devices must have the self-adjusting function of brake clearance, these rules are about to put into practice, started the development work of automatic adjustment arm thus, on probation some of development are now adjusted arm has automatically made the drum brake that generally uses brake clearance arranged from conditioning function, but these adjust the test of arm by a period of time automatically, following point has appearred: 1) braking deviation, and this is one of reason that causes many traffic accidents; 2) brake overheating is easy to generate heat fade, influence braking reliability; 3) brake noise is big, formation is to the pollution of environment, 4) to the requirement on machining accuracy height, thereby increased manufacture cost greatly, its market popularization value is reduced, on the existing truck of China, passenger vehicle, rarely have use, thereby up to the present also fail really to obtain practical application, cause the brake clearance self-adjustment structure on the break also to be in development status.
Summary of the invention
The purpose of this utility model is exactly at above-mentioned the deficiencies in the prior art, design a kind ofly, the excessive brake clearance that can produce the wearing and tearing because of friction component (comprising friction facing and brake drum) compensates and is applicable to the automotive brake of the band brake clearance self-regulating mechanism of truck, passenger vehicle automatically.It is realized by following technological scheme:
Comprise braking bottom board, brake shoe, intermediate plate, big return spring, little return spring, the straight trough positioning supports, the skewed slot positioning supports, the semicircle piece, dust-proof cover, the brake clearance self-adjustment structure, sensor unit, described brake clearance self-adjustment structure places a side of braking bottom board, straight trough positioning supports and skewed slot positioning supports place on the symmetrical position of braking bottom board opposite side, the two halves nahlock slips with straight trough positioning supports and skewed slot positioning supports respectively, the half slot and the semicircle piece of brake shoe one end are hinged, its the other end is crimped on the brake clearance self-adjustment structure, two intermediate plates are fixed on the symmetrical both sides at braking bottom board middle part, respectively brake shoe is clamped on the supporting plane of braking bottom board both sides, big return spring and little return spring are connected two brake shoes of the braking bottom board symmetry both sides that are placed in respectively, sensor is connected on the brake shoe, and dust-proof cover is connected on the braking bottom board.
Described straight trough positioning supports and skewed slot positioning supports are rabbeted respectively in the blind hole of braking bottom board one end symmetry both sides, be respectively equipped with straight trough and skewed slot on straight trough positioning supports and the skewed slot positioning supports, two described semicircle pieces are plugged on respectively in this straight trough and the skewed slot, can distinguish relative to straight trough positioning supports and skewed slot positioning supports along groove to moving.
Described brake clearance self-adjustment structure assembly comprises housing, voussoir, roller, end cap, the retaining pad, spring, piston, positioning screwn, the ratchet nut sleeve, ratchet skewed slot cover, adjust screw and stop ring, described housing symmetry center place is provided with upright opening I, end cap is connected among the I of hole, be respectively equipped with the horizontal through hole II that communicates with it in the symmetrical both sides of hole I, piston slips in through hole II, in the hole of piston center, slip ratchet skewed slot cover vertically from the inside to the outside successively, the ratchet nut sleeve, positioning screwn cross-under housing is tight against in the spiral chute of ratchet skewed slot cover periphery, and there is gap delta with spiral chute, be respectively equipped with corresponding ratchet on ratchet nut sleeve and the ratchet skewed slot cover adjacent face, both are meshing with each other by described ratchet and realize unidirectional being in transmission connection, adjusting screw threads is connected in the screw of ratchet nut sleeve center, its front end connects stop ring, the voussoir upper end connects the retaining pad, symmetry both sides, lower end are hinged roller respectively, between retaining pad and described end cap, be equipped with spring, the cross-under end cap of described voussoir stretches in the hole (I), make its upper end described roller place with the corresponding position of described piston on.
Described sensor unit is made up of connector assembly, lead, contact, copper sheathing, opening sleeve, leaf spring nut, and the two ends of described lead connect plug-in unit and copper sheathing respectively, and contact places the inboard of copper sheathing one end, and opening sleeve and leaf spring nut place the outside of copper sheathing.
The beneficial effects of the utility model are: 1) have brake clearance and adjust function automatically, because sensor is installed, can in time point out the driver to change friction facing simultaneously, the travel safety of braking device and reliability are all improved greatly; 2) do not need component such as camshaft, adjustment arm, structure is more succinct, the retardation efficiency height, and under the identical situation of output braking moment, its physical dimension is relative with oeverall quality less, thereby manufacture cost is reduced; 3) the friction facing replacing is simple and convenient, only need unload the brake shoe that two return springs can take off the belt material sheet, conveniently exchanges for; 4) the brake clearance self-adjustment structure can compensate because of the variation that temperature variation produces automatically to brake clearance, thereby phenomenon such as tire can not occur pulling, embrace, contacts with brake drum simultaneously when guaranteeing the cylindrical braking of two brake shoe friction facings simultaneously, can avoid braking deviation.
Description of drawings
Fig. 1 is the utility model structural representation
The structural representation of Fig. 2 brake clearance self-adjustment structure
Fig. 3 is the linkage structure schematic representation of straight trough positioning supports, skewed slot positioning supports, semicircle piece and half slot
The structural representation of Fig. 4 sensor
Among the figure, the 1st, brake shoe, the 2nd, brake lining, the 3rd, big return spring, the 4th, straight trough, the 5th, skewed slot, the 6th, half slot, the 7th, lead, the 8th, copper sheathing, the 9th, leaf spring nut, the 10th, intermediate plate, the 11st, sensor, the 12nd, skewed slot positioning supports, the 13rd, straight trough positioning supports, the 14th, semicircle piece, the 15th, little return spring, the 16th, braking bottom board, the 17th, dust-proof cover, the 18th, contact, 19 opening sleeves, the 20th, plug connector, the 100th, brake clearance self-adjustment structure, the 101st, positioning screwn, the 102nd, rubber sheath, the 103rd, adjust screw, the 104th, ratchet nut sleeve, the 105th, ratchet skewed slot cover, the 106th, pad, the 107th, spring pad, the 108th, piston, the 109th, voussoir, the 110th, housing, the 111st, end cap, the 112nd, dust cap, the 113rd, return spring, the 114th, retaining pad, the 115th, jump ring, the 116th, spiral chute, the 118th, stop ring, the 119th, roller.
Embodiment
Below in conjunction with drawings and Examples the utility model and advantage thereof are described further.
Contrast Fig. 1, brake clearance self-adjustment structure 100 places a side of braking bottom board 16, straight trough positioning supports 12 and skewed slot positioning supports 13 are rabbeted system respectively and are in the blind hole of base plate 16 opposite side symmetrical positions, be respectively equipped with straight trough 4 and skewed slot 5 on straight trough positioning supports 12 and the skewed slot positioning supports 13, see also Fig. 3, the bottom of two halves nahlock 14 is plugged on respectively in this straight trough and the skewed slot, can distinguish relative to straight trough positioning supports 12 and skewed slot positioning supports 13 along groove to moving.The half slot 6 of brake shoe 1 one ends is hinged with semicircle piece 14, its the other end is crimped on the brake clearance self-adjustment structure 100, two intermediate plates 10 are fixed on the symmetrical both sides at braking bottom board middle part, respectively brake shoe 1 is clamped on the supporting plane of braking bottom board both sides, big return spring 3 and little return spring 15 are connected two brake shoes 1 of the braking bottom board 16 symmetrical both sides that are placed in respectively, sensor 11 is connected on the brake shoe 1, and dust-proof cover is connected on the braking bottom board.
Contrast Fig. 2, brake clearance self-adjustment structure 100 mainly is made up of housing 110, voussoir 109, roller 119, end cap 111, retaining pad 114, return spring 113, piston 108, positioning screwn 101, ratchet nut sleeve 104, ratchet skewed slot cover 105, adjustment screw 103 and stop ring 118, housing 10 symmetry center places are provided with upright opening I, end cap 16 is connected among the I of hole, be respectively equipped with the horizontal through hole II that communicates with it in the symmetrical both sides of hole I, two-piston 108 slips respectively in the through hole II of both sides.In the hole of piston center, slip ratchet skewed slot cover 105, ratchet nut sleeve 104 vertically from the inside to the outside successively, and between the bottom, hole in hole is overlapped with the ratchet skewed slot, be equipped with spring pad 107.Ratchet nut sleeve 104 and ratchet skewed slot overlap and are respectively equipped with corresponding ratchet on 5 adjacent faces, and spring pad 107 makes ratchet nut sleeve 104 and ratchet skewed slot cover 105, and both mesh closely, are meshing with each other by ratchet and realize between the two one-way rotation connection.The periphery of ratchet skewed slot cover 105 also is provided with spiral chute 116, and positioning screwn 101 cross-under housings 110 are tight against in this spiral chute, and positioning screwn 101 makes it have certain clearance δ with spiral chute 116 when designing.
Adjust screw 103 and be screwed in the screw of ratchet nut sleeve 104 centers, its front end connects stop ring 118, prevents to adjust screw 103 and rotates.
For the utility model mechanism being worked better and having longer working life, all be provided with corresponding dust guard at the port that contacts with the external world, on the housing of through hole II outboard end, be connected with rubber sheath 102, be connected with dust cap 112 at the outboard end of end cap 111.
Contrast Fig. 4, sensor 11 is made up of connector assembly, lead 7, contact 18, copper sheathing 8, opening sleeve 19, leaf spring nut 9, plug connector 20, the two ends of lead 7 connect plug-in unit 20 and copper sheathing 8 respectively, contact 18 places the inboard of copper sheathing 8 one ends, and opening sleeve 19 and leaf spring nut 9 are screwed in the outside of copper sheathing 8.Sensor 11 passes through copper sheathing 8 cross-under on brake shoe 1, and is tightened by the leaf spring nut.Contact 18 places a hole on the braking lining 2 that is connected the brake shoe outside.
During braking, brake chamber promotes voussoir 109 and advances, voussoir 109 acts on respectively on the inclined-plane of two-piston 108 by two rollers 119, promoting piston 108 outwards moves, outwards move to drive parts such as ratchet skewed slot cover 105, ratchet nut sleeve 104, adjustment screw 103, thereby promotion brake shoe 1 and brake lining 2 are around 14 rotations of semicircle piece, so that it expands outwardly, with the contact brake drum, produce braking.Because two halves nahlock 14 can move along groove simultaneously,, can guarantee that also the cylindrical of two brake shoe friction facings contacts with brake drum simultaneously, thereby can avoid braking deviation even drum braking deviation from circular from is bigger.
When the gap between brake lining and brake drum belongs to normal gap, piston 108 drives ratchet skewed slots cover 105 and outwards moves axially formed brake clearance be not more than the gap delta that positioning screwn 101 and spiral chute 116 are had when design, 105 in ratchet skewed slot cover axially moves, and does not relatively rotate.
When friction facing and brake drum have wearing and tearing, gap between friction facing and the brake drum increases, want to produce braking, the displacement amount of piston 108 will increase, ratchet skewed slot cover 105 outside axial displacements are bigger, surpass positioning screwn 101 and the gap delta that spiral chute 116 is had when designing, the spiral fluted wall 116 on the ratchet skewed slot cover 105 is rotated behind the positioning screwn 101 that abuts to, rotate thereby drive band ratchet nut sleeve 104.Since ratchet nut sleeve 104 with adjust between the screw 103 to being threaded, can not rotate by the restriction of brake shoe and adjust screw 103, therefore, the rotation of ratchet nut sleeve 104 will make adjustment screw 103 move to axial, adjustment screw 103 is protruding.Behind the brake off, under the effect of brake shoe return spring, adjust screw 103 returns, thereby drive part returns such as ratchet nut sleeve 104, ratchet skewed slot cover 105, piston 108, ratchet skewed slot cover 105 will take place under the effect of positioning screwn 101 and the rotation of direction of rotation before in the process of return, but since between ratchet skewed slot cover 105 and the ratchet nut sleeve 4 for ratchet is the one way engagement transmission, this moment, ratchet skewed slot cover 105 backward rotation can not drive the 104 do rotations in the same way of ratchet nut sleeve.Adjust screw 103 relative ratchet nut sleeve 104 overhang vertically when so far braking and to have compensated the excessive gaps that the wearing and tearing owing to friction facing and brake drum produce, thereby guaranteed the constant of brake clearance, realized automatic adjustment.
Claims (4)
1, the automotive brake of band brake clearance self-regulating mechanism, it is characterized in that comprising braking bottom board, brake shoe, intermediate plate, big return spring, little return spring, the straight trough positioning supports, the skewed slot positioning supports, the semicircle piece, dust-proof cover, the brake clearance self-adjustment structure, sensor unit, described brake clearance self-adjustment structure places a side of braking bottom board, straight trough positioning supports and skewed slot positioning supports place on the symmetrical position of braking bottom board opposite side, the two halves nahlock slips with straight trough positioning supports and skewed slot positioning supports respectively, the half slot and the semicircle piece of brake shoe one end are hinged, its the other end is crimped on the brake clearance self-adjustment structure, two intermediate plates are fixed on the symmetrical both sides at braking bottom board middle part, respectively brake shoe is clamped on the supporting plane of braking bottom board both sides, big return spring and little return spring are connected two brake shoes of the braking bottom board symmetry both sides that are placed in respectively, sensor is connected on the brake shoe, and dust-proof cover is connected on the braking bottom board.
2, the automotive brake of band brake clearance self-regulating mechanism according to claim 1, it is characterized in that described straight trough positioning supports and skewed slot positioning supports rabbet respectively in the blind hole of braking bottom board one end symmetry both sides, be respectively equipped with straight trough and skewed slot on straight trough positioning supports and the skewed slot positioning supports, two described semicircle pieces are plugged on respectively in this straight trough and the skewed slot, can distinguish relative to straight trough positioning supports and skewed slot positioning supports along groove to moving.
3, the automotive brake of band brake clearance self-regulating mechanism according to claim 2, it is characterized in that described brake clearance self-adjustment structure assembly comprises housing, voussoir, roller, end cap, the retaining pad, spring, piston, positioning screwn, the ratchet nut sleeve, ratchet skewed slot cover, adjust screw and stop ring, described housing symmetry center place is provided with upright opening (I), end cap is connected in the hole (I), the symmetrical both sides of (I) are respectively equipped with the horizontal through hole (II) that communicates with it in the hole, piston slips in through hole (II), in the hole of piston center, slip ratchet skewed slot cover vertically from the inside to the outside successively, the ratchet nut sleeve, positioning screwn cross-under housing is tight against in the spiral chute of ratchet skewed slot cover periphery, and there is gap (δ) with spiral chute, be respectively equipped with corresponding ratchet on ratchet nut sleeve and the ratchet skewed slot cover adjacent face, both are meshing with each other by described ratchet and realize unidirectional being in transmission connection, adjusting screw threads is connected in the screw of ratchet nut sleeve center, its front end connects stop ring, the voussoir upper end connects the retaining pad, symmetry both sides, lower end are hinged roller respectively, between retaining pad and described end cap, be equipped with spring, the cross-under end cap of described voussoir stretches in the hole (I), make the described roller of its lower end place with the corresponding position of described piston on.
4, the automotive brake of band brake clearance self-regulating mechanism according to claim 2, it is characterized in that described sensor unit is made up of connector assembly, lead, contact, copper sheathing, opening sleeve, leaf spring nut, the two ends of described lead connect plug-in unit and copper sheathing respectively, contact places the inboard of copper sheathing one end, and opening sleeve and leaf spring nut place the outside of copper sheathing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140075 CN2883782Y (en) | 2005-12-22 | 2005-12-22 | Automotive brake with brake gap self-regulating gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140075 CN2883782Y (en) | 2005-12-22 | 2005-12-22 | Automotive brake with brake gap self-regulating gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2883782Y true CN2883782Y (en) | 2007-03-28 |
Family
ID=37956844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520140075 Expired - Lifetime CN2883782Y (en) | 2005-12-22 | 2005-12-22 | Automotive brake with brake gap self-regulating gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2883782Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910242A (en) * | 2012-11-14 | 2013-02-06 | 苏州华胜达铝业有限公司 | Brake assembly for motorcycle hub |
| CN103148126A (en) * | 2013-03-07 | 2013-06-12 | 江苏汤臣汽车零部件有限公司 | Easy-to-assemble brake |
| CN103998813A (en) * | 2011-12-16 | 2014-08-20 | 塞夫霍兰德有限公司 | Brake system for utility vehicles |
| CN105090285A (en) * | 2014-05-15 | 2015-11-25 | 董仲国 | Sliding and rotating braking cam assembly for motor vehicle and matched straight channel hoof palm |
| CN107588124A (en) * | 2016-07-06 | 2018-01-16 | 泰州市扬帆车件有限公司 | A kind of lock that rises of low abrasion |
| CN110100111A (en) * | 2016-12-20 | 2019-08-06 | 福乐尼·乐姆宝公开有限公司 | The device being adjusted for the gap to drum brake |
-
2005
- 2005-12-22 CN CN 200520140075 patent/CN2883782Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998813A (en) * | 2011-12-16 | 2014-08-20 | 塞夫霍兰德有限公司 | Brake system for utility vehicles |
| CN103998813B (en) * | 2011-12-16 | 2016-07-06 | 塞夫霍兰德有限公司 | The brakes of multi-purpose vehicle |
| CN102910242A (en) * | 2012-11-14 | 2013-02-06 | 苏州华胜达铝业有限公司 | Brake assembly for motorcycle hub |
| CN102910242B (en) * | 2012-11-14 | 2014-10-01 | 苏州华胜达铝业有限公司 | Brake assembly for motorcycle hub |
| CN103148126A (en) * | 2013-03-07 | 2013-06-12 | 江苏汤臣汽车零部件有限公司 | Easy-to-assemble brake |
| CN105090285A (en) * | 2014-05-15 | 2015-11-25 | 董仲国 | Sliding and rotating braking cam assembly for motor vehicle and matched straight channel hoof palm |
| CN105090285B (en) * | 2014-05-15 | 2021-06-25 | 董仲国 | Sliding and rotating brake cam assembly of motor vehicle and matched shoe palm thereof |
| CN107588124A (en) * | 2016-07-06 | 2018-01-16 | 泰州市扬帆车件有限公司 | A kind of lock that rises of low abrasion |
| CN107588124B (en) * | 2016-07-06 | 2023-11-24 | 泰州市扬帆车件有限公司 | Low-abrasion expansion brake |
| CN110100111A (en) * | 2016-12-20 | 2019-08-06 | 福乐尼·乐姆宝公开有限公司 | The device being adjusted for the gap to drum brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070328 |
|
| EXPY | Termination of patent right or utility model |