CN2570536Y - Braking clearance automatic regulating device - Google Patents
Braking clearance automatic regulating device Download PDFInfo
- Publication number
- CN2570536Y CN2570536Y CN 02276731 CN02276731U CN2570536Y CN 2570536 Y CN2570536 Y CN 2570536Y CN 02276731 CN02276731 CN 02276731 CN 02276731 U CN02276731 U CN 02276731U CN 2570536 Y CN2570536 Y CN 2570536Y
- Authority
- CN
- China
- Prior art keywords
- tooth bar
- arm body
- automatic regulating
- worm
- fixed
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a braking clearance automatic regulating device, particularly an automatic regulating device for the braking clearance of motor vehicles. The braking clearance automatic regulating device mainly comprises a regulating arm body, a worm and worm wheel pair, and a control arm assembly, wherein, a worm shaft is fixed with a straight ratchet toothed ring which is meshed with a straight ratchet toothed rack in one way; a cover plate of the control arm assembly is fixed with a toothed rack controller so as to ensure the one-way meshing engagement of the straight ratchet toothed rack and the straight ratchet toothed ring. The braking clearance automatic regulating device has the advantages of convenient installation and operation, high automatic regulating precision, favorable versatility and low cost.
Description
Technical field
The utility model relates to a kind of brake clearance automatic regulating apparatus, particularly a kind of automatic regulating apparatus that is used for the Motor Vehicle brake clearance.
Technical background
It is its main wearout parts that Motor Vehicle often needs to use continually break, drag friction pair in the process of moving.Along with the increase of time, drag friction subtask face weares and teares because of frequent friction, and the reservation standard clearance between the rubbing surface is increased, and the gap of increase will be if untimely adjustment will cause a hidden trouble to traffic safety.Normally adopt manually method to come brake clearance is adjusted at present, adjustment process wastes time and energy, and can not adjust brake clearance at random at any time accurately and timely.
Automatically the appearance of adjusting arm has solved all drawbacks of above-mentioned artificial adjustment brake clearance, arm is adjusted in HALDEX brake as Sweden automatically, it can carry out convenient and reliable automatic adjustment to brake clearance in braking process, and the checking of popularizing using effect is for many years arranged.But the control mechanism that has used " overrunning clutch ", " worm shaft end face tooth " and " worm shaft axial compression spring " in the arm is automatically adjusted in this brake, makes its structure comparatively complicated, and manufacturing difficulty is big, and product cost increases.
The model utility content
Technical problem to be solved in the utility model provides the simple relatively brake clearance automatic regulating apparatus of a kind of structure, under the prerequisite that satisfies the mechanical braking performance, can adjust automatically brake clearance easily and reliably.
Brake clearance automatic regulating apparatus described in the utility model mainly comprises adjusts arm body, worm-gears and control arm assembly, worm-gears is arranged in adjusts the arm body, the control arm assembly is combined as a whole by notched control ring, control arm and cover plate and constitutes, and is fixed on by cover plate and adjusts on the arm body and control ring is rotated relative to adjusting the arm body with control arm; The tooth bar that in adjusting the arm body, also has a buckle ear, being positioned at the rach slot of adjusting the arm body also can move around along rach slot, be fixed with on worm shaft always that the ratchet ring gear can rotate with worm shaft, described tooth bar is straight ratchet tooth bar, and with straight ratchet ring gear one way engagement; On the cover plate of control arm assembly, be fixed with rack controller, to guarantee straight ratchet tooth bar and straight ratchet ring gear one way engagement.
Described rack controller by shell, carry axle rod, spring and U type pawl and constitute, its medi-spring is positioned at shell and is enclosed within to be carried on the axle rod, U type pawl is fixed on carries axle rod one end, and the inwardly little flange on U type pawl both sides is buckled in the chute of tooth bar both sides and can moves along this chute.
Brake clearance automatic regulating apparatus described in the utility model is owing to given up the HALDEX brake complicated structures such as " overrunning clutchs " of adjustment arm automatically, replace " cylindrical straight ratchet ring gear and straight ratchet tooth bar " structure, both reduced manufacturing difficulty, reduce manufacturing cost again, easy to install, it is better to adjust precision height and versatility automatically; Because this apparatus structure is removed outside " cylindrical straight ratchet ring gear and straight ratchet tooth bar " and " the control arm assembly of band breach and rack controller ", its structure is exactly a manual arm assembly of adjusting, even so occur under the situation of inner regulating mechanism inefficacy, it is the result that brake clearance can't lock that the rotation of worm screw drive worm gear can not take place yet.
Description of drawings
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is the plan view of a kind of concrete structure of brake clearance automatic regulating apparatus described in the utility model; Fig. 2 is the main pseudosection of this device; Fig. 3 is an A-A sectional drawing among Fig. 1; Fig. 4 is a B-B sectional drawing among Fig. 1.
Embodiment
As shown in Figures 1 to 4, this brake clearance automatic regulating apparatus mainly comprises adjusts arm body 5, worm- gears 6,8 and control arm assembly, worm- gears 6,8 is arranged in adjusts arm body 5, the worm gear axle center hole is a splined hole, and being fixed with always on worm shaft 7, ratchet ring gear 9 can rotate with worm shaft 7; The control arm assembly is combined as a whole by notched control ring 3, control arm 1 and cover plate 4 and constitutes, and by cover plate 4 be fixed on adjust on the arm body 5 and can make control ring 3 and control arm 1 relatively adjustment arm body 5 rotate; The straight ratchet tooth bar 2 that one buckle ear is arranged in adjusting arm body 5 is positioned at the rach slot of adjusting arm body 5 and also can moves around along rach slot, and return spring 14 is housed in the rach slot, this straight ratchet tooth bar 2 and straight ratchet ring gear 9 one way engagement that are fixed on the worm shaft 7; On the cover plate 4 of control arm assembly, be welded with rack controller, to guarantee straight ratchet tooth bar 2 and straight ratchet ring gear 9 one way engagement.This rack controller by shell 11, carry axle rod 12, spring 13 and U type pawl 10 and constitute, its medi-spring 13 is positioned at shell 11 and is enclosed within to be carried on the axle rod 12, U type pawl 10 is fixed on carries axle rod 12 1 ends, and the inwardly little flange on U type pawl 10 both sides is buckled in the chute of tooth bar 2 both sides and can moves along this chute.
During use, the worm gear inner splined hole of brake clearance automatic regulating apparatus is enclosed within on the braking force transmission shaft (as camshaft) of break, the control arm assembly is fixed on other object (as axle shell), and the breach of control ring and tooth bar lifting lug relative position are shown in Fig. 1 groove at this moment.External force acts on adjusts the arm body, it is rotated around the worm gear center, because control arm maintains static together with control ring, tooth bar rotates with adjusting the arm body, and then breach neutral gear α can eliminate along with the rotation of adjusting the arm body among Fig. 1, accordingly, adjust the arm body and then turned over the δ angle around the worm gear center, this δ angle has comprised normal brake application gap stroke, if brake clearance is normal, promptly surpass design load, the stroke of then adjusting the rotation of arm body is exactly the δ angle.
If brake clearance surpasses the normal design value, then adjusting arm body rotation angle is δ+Δ δ, because breach α neutral gear eliminates, tooth bar just will certainly be headed in rach slot with respect to adjustment arm body corresponding Δ δ value one segment distance that upwards slides by the control ring lower edge.
The unidirectional straight ratchet of tooth bar is meshed with the unidirectional straight ratchet of ring gear, and is designed to tooth bar when upwards sliding, the tooth slide relative of tooth bar and ring gear and do not drive ring gear and rotate.
After braking maneuver finishes, adjust arm body revolution return, promptly get back to position as shown in Figure 1, then tooth bar retracts elimination in also controlled ring breach upper edge simultaneously along that segment distance corresponding to Δ δ value that the tooth bar chute upwards slides.Be that the return hour rack also can be headed in rach slot with respect to adjusting the arm body to the Δ δ of lower slider correspondence value one segment distance by the control ring upper edge.The mutual one way engagement of straight ratchet of this hour rack and ring gear, the rack drives ring gear clockwise rotates, and ring gear drives worm shaft and rotates, and rotates counterclockwise several angle thereby drive worm gear by worm screw, reduces brake clearance so drive break.So go round and begin again, δ will be eliminated fully along with several braking maneuver Δ, and brake clearance also will return to normal value.
Spring in the rack controller is pressed to ring gear (certain precompression is arranged, but tooth bar is when moving upward, its profile of tooth component and frictional force are not enough to drive ring gear again and rotate) with tooth bar, to guarantee the effect of one way engagement.If installing or artificial adjustment need rotate counterclockwise ring gear the time, then must will carry axle rod and outwards mention and tooth bar and ring gear are broken away from mesh.
Claims (2)
1, a kind of brake clearance automatic regulating apparatus, mainly comprise and adjust arm body (5), worm-gears (6,8) and control arm assembly, worm-gears (6,8) is arranged in adjusts arm body (5), the control arm assembly is by notched control ring (3), control arm (1) and cover plate (4) formation that combines as a whole, and is fixed on by cover plate (4) and adjusts arm body (5) and go up and control ring (3) is rotated relative to adjusting arm body (5) with control arm (1); The tooth bar (2) that in adjusting arm body (5), also has a buckle ear, being positioned at the rach slot of adjusting arm body (5) also can move around along rach slot, it is characterized in that: a) being fixed with always on worm shaft (7), ratchet ring gear (9) can rotate with worm shaft (7), described tooth bar (2) is straight ratchet tooth bar, and with straight ratchet ring gear (9) one way engagement; B) on the cover plate (4) of control arm assembly, be fixed with rack controller, to guarantee straight ratchet tooth bar (2) and straight ratchet ring gear (9) one way engagement.
2, brake clearance automatic regulating apparatus according to claim 1, it is characterized in that: described rack controller by shell (11), carry axle rod (12), spring (13) and U type pawl (10) constitutes, its medi-spring (13) is positioned at shell (11) and is enclosed within to be carried on the axle rod (12), U type pawl (10) is fixed on carries axle rod (12) one ends, and the inwardly little flange on U type pawl (10) both sides is buckled in the chute of tooth bar (2) both sides and can moves along this chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276731 CN2570536Y (en) | 2002-09-30 | 2002-09-30 | Braking clearance automatic regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276731 CN2570536Y (en) | 2002-09-30 | 2002-09-30 | Braking clearance automatic regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570536Y true CN2570536Y (en) | 2003-09-03 |
Family
ID=33740529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02276731 Expired - Fee Related CN2570536Y (en) | 2002-09-30 | 2002-09-30 | Braking clearance automatic regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570536Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321968B (en) * | 2005-12-05 | 2011-02-23 | 韦伯太克控股公司 | Collet controlled slack adjuster |
-
2002
- 2002-09-30 CN CN 02276731 patent/CN2570536Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321968B (en) * | 2005-12-05 | 2011-02-23 | 韦伯太克控股公司 | Collet controlled slack adjuster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |