CN2690661Y - Automatic regulating arm for structure improued automobile brake gap - Google Patents
Automatic regulating arm for structure improued automobile brake gap Download PDFInfo
- Publication number
- CN2690661Y CN2690661Y CN 200420020337 CN200420020337U CN2690661Y CN 2690661 Y CN2690661 Y CN 2690661Y CN 200420020337 CN200420020337 CN 200420020337 CN 200420020337 U CN200420020337 U CN 200420020337U CN 2690661 Y CN2690661 Y CN 2690661Y
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- Prior art keywords
- clutch ring
- worm screw
- gear
- arm
- spline
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- Expired - Fee Related
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Abstract
The utility model provides a structure improved automatic regulating arm for an automobile brake gap, which belongs to the automobile technical field. The utility model solves the problems of the large abrasion and short service life of the force applied components of the existing automatic regulating arm. The structure improved automatic regulating arm for an automobile brake gap comprises a shell, a worm gear and an endless screw are arranged in the shell, one end of the endless screw is sheathed with a one-way clutch, and a controlling arm and a notch controlling panel are sheathed on the shell. The one-way clutch comprises a clutch ring, a gearwheel and a spiral spring, the clutch ring, the gearwheel and the spiral spring are sheathed on the endless screw, the inner side surface of the clutch ring is provided with a spline, and a spline which is matched with the clutch ring spline is arranged on the endless screw corresponding to the clutch ring position. The clutch ring of the one-way clutch of the automatic regulating arm is connected with the endless screw via the spline, the connection is reliable, the force is dispersed in use, so the abrasion of the parts is little, and the service life of the product can be extended.
Description
Technical field
The utility model belongs to automobile technical field, the particularly a kind of device that can adjust gap between automobile brake drum and the friction plate automatically.
Background technique
In vehicle traveling process, need apply the brakes continually.Long-term use can cause the gap between automobile brake drum and the friction plate to become big.If untimely adjustment can cause phenomenons such as stopping distance is excessive, brake drum mistake circle, bring unsafe hidden danger to driving.Therefore, stipulate clearly that in the NBS of China Motor Vehicle such as passenger vehicle, truck and trailer must install arm for automatically regulating clearance of brake.
The kind of existing auto automatic adjusting arm is a lot, the application that has patent.The applicant has designed a kind of automatic adjustment arm of novelty on the basis of comprehensive common adjustment arm advantage, and has applied for Chinese patent, and the patent No. is: 00259577.X.Should automatically adjust arm and comprise housing, worm gear and worm screw are housed in housing, the end of worm screw is provided with parts such as overrunning clutch, lining, spring, and wherein overrunning clutch cooperates by two ratchets and makes one-way rotation and realize.Although the stable performance of this automatic adjustment arm, ratchet is stressed bigger in its overrunning clutch, weares and teares easily, has directly influenced the working life of product.
Other automatic adjustment arm also exists problems such as stressed parts depreciation is big, working life is short.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of structure improved arm for adjusting automobile brake clearance automatically is provided, and makes it have characteristics such as rational in infrastructure, stressed parts depreciation is few, long service life.
The purpose of this utility model can realize by following technical proposal: this structure improved arm for adjusting automobile brake clearance automatically comprises a housing, in housing, be equipped with worm gear and with the worm screw of worm wheel, the end of worm screw is with overrunning clutch, control arm of socket and breach control panel on housing, it is characterized in that, described overrunning clutch comprises the clutch ring, gear and helical spring, the three all is socketed on the worm screw, clutch ring and gear are set up in parallel, helical spring is loaded in their endoporus, and its two ends are connected with clutch ring and gear respectively, inner side surface at the clutch ring has spline, and the position corresponding to the clutch ring on worm screw has the spline that is complementary with clutch ring spline; Be provided with a toothed rack in housing, the top of tooth bar is meshed with gear, and there is a turning lower end of tooth bar, and this turning is embedded in the breach of breach control panel.
In above-mentioned structure improved arm for adjusting automobile brake clearance automatically, with respect to torsion spring of the other end socket of overrunning clutch, an end of torsion spring is fixed on the worm screw on the described worm screw, and the other end is fixed on the housing.The effect of this torsion spring is to make worm screw do unidirectional rotation.
In this structure improved arm for adjusting automobile brake clearance automatically, utilize helical spring, make the gear one-way rotation.Particularly, when tooth bar moves up, turning to of gear is identical with helical spring rotation direction, helical spring has the trend of radial contraction, frictional force between gear and clutch ring and the helical spring surface of contact is reduced, therefore gear can slide with respect to helical spring and clutch ring, and promptly overrunning clutch is in separated state.Though, gear and helical spring residual frictional force the trend that worm screw is rotated is arranged, the torsion spring of the worm screw the other end just in time is on the direction that stops its rotation, so worm screw can not rotated at this moment.Otherwise when tooth bar moved down, turning to of gear was opposite with helical spring rotation direction, and helical spring has the trend of distending, thereby makes clutch be in bonding state.Because the clutch ring is joining by spline and worm screw, so overrunning clutch has the moment that drives the worm screw rotation.Simultaneously the direction that will rotate of worm screw is opposite with the direction that torsion spring limited of the worm screw the other end, can drive worm screw and rotate together so tooth bar is descending, thus the adjustment of realization brake clearance.
Automatically adjusting in arm at this, is joining by spline between the clutch ring of overrunning clutch and the worm screw, not only connect reliable, and stressed in use dispersion, make part wearing and tearing seldom, can prolong the working life of product.
In addition, automatically adjust in the arm using process at this, automobile needs only the excessive gaps that there is pettiness in break when each braking, automatically adjust the corresponding angle of arm stroke and will realize trace adjustment, and this is adjusted and occurs in braking releasing ending phase just, therefore its structure is very reasonable, makes this adjust arm automatically and has higher functional reliability.
Description of drawings
Fig. 1 is the sectional view of the structure improved arm for adjusting automobile brake clearance automatically that provides of the utility model.
Fig. 2 is the sectional view of structure improved another angle of arm for adjusting automobile brake clearance automatically of providing of the utility model.
Among the figure, 1, housing; 2, cover plate; 3, worm screw; 31, spline; 4, control arm; 5, spring; 6, helical spring; 7, clutch ring; 71, spline; 8, breach control panel; 81, breach; 9, tooth bar; 91, turning; 10, torsion spring; 11, patch; 12, bearing; 13, gear; 14, worm gear; 15, baffle ring.
Embodiment
As depicted in figs. 1 and 2, this structure improved arm for adjusting automobile brake clearance automatically is made up of parts such as housing 1, worm screw 3, worm gear 14, overrunning clutch, torsion spring 10, tooth bar 9, control arm 4, breach control panels 8.Worm screw 3 is meshed with worm gear 14, and is loaded in the housing 1.
Overrunning clutch comprises clutch ring 7, gear 13 and helical spring 6, and wherein clutch ring 7 is set up in parallel with gear 13 and is in the same place, and helical spring 6 is housed in their endoporus, and the two ends of helical spring 6 are fixed on respectively on clutch ring 7 and the gear 13.In the present embodiment, be equipped with annular groove at the inner side surface of clutch ring 7 and gear 13, helical spring 6 is installed in the annular groove.Like this, be convenient to overrunning clutch and be socketed on the worm screw 3, and the surface friction drag between minimizing helical spring 6 and the worm screw 3.
Inner side surface at clutch ring 7 has spline 71, and the position corresponding to clutch ring 7 on worm screw 3 also has spline 31.Be meshed by spline 31,71, clutch ring 7 circumferentially is fixed on the worm screw 3.Therefore, when clutch ring 7 rotates, just can drive worm screw 3 and rotate together.
As shown in Figure 1, the middle part of worm screw 3 is meshed by the worm gear 14 in its teeth and the housing 1.Torsion spring 10 of the other end socket worm screw 3.The two ends of torsion spring 10 are individually fixed on worm screw 3 and the housing 1.Also be provided with baffle ring 15 and patch 11 in the outside of torsion spring 10, baffle ring 15 also is socketed on the worm screw 3.This is automatically adjusted in arm, and the effect of torsion spring 10 is to make the worm screw 3 can only be along one-way rotation.
Bearing 12 of socket on the worm screw 3.Bearing 12 is located at the overrunning clutch sidepiece, and worm screw 3 is played a supporting role, and worm screw 3 is rotated flexibly.
As shown in Figure 1, be provided with a tooth bar 9 in housing 1, the top of tooth bar 9 is meshed with gear 13, and the lower end of tooth bar 9 has one to bend the turning 91 that to sidepiece.Automatically adjust in the structure of arm at this, when tooth bar 9 moved up, overrunning clutch was in separated state, and torsion spring 10 combines with worm screw 3, and worm screw 3 is not rotated; When tooth bar 9 moved down, overrunning clutch was in bonding state, and tooth bar 9 can drive worm screw 3 and rotate.
In the present embodiment, be provided with spring 5 at the sidepiece of tooth bar 9, the two ends of spring 5 are fixed on respectively on tooth bar 9 and the housing 1.This spring 5 has been effects of return.When adjusting in the arm working procedure, after tooth bar 9 moves up, make it return back to initial position by spring 5 effects.
As shown in Figure 2, a cover plate 2 is arranged on the housing 1 of worm gear 14 outer ends, cover control arm 4 of riveting and breach control panel 8 on the cover plate 2.A breach 81 is arranged on breach control panel 8, and the turning 91 of above-mentioned tooth bar 9 is embedded in this breach 81.
This is adjusted arm automatically and is installed in the automobile, and its control arm 4 is fixed on the car body of automobile, and housing 1 connects with the brake cylinder of brake system of car usually, and camshaft of brakes inserts in the worm gear 14, and rotates along with the rotation of worm gear 14.
Under normal circumstances, break is keeping normal brake clearance, and when adjusting arm this moment and doing the braking swing, the turning 91 of tooth bar 9 is swung relatively and do not had any moving 81 li of the breach of breach control panel 8, and promptly tooth bar 9 does not slide up and down.Therefore, worm screw 3 does not rotate with respect to worm gear 14, does not promptly do the adjustment of brake clearance.
When break produces excessive gaps, in whole braking process, along with the increasing of adjusting the arm angular displacement, tooth bar turning 91 is promoted upwards trace of slippage by the breach 81 of breach control panel 8 to tooth bar 9 turnings 91 in the final stage of braking, and just tooth bar 9 driven gears 13 rotate an angle; When braking is removed, adjust the original state that return spring that arm is braked air chamber is returned to air chamber, adjusting arm turns round gradually, when contacting and slippage downwards gradually with tooth bar 9 turnings 91 above stage breach control panel 8 breach 81 to the end, be that tooth bar 9 moves down and driven gear 13 and angle of worm screw 3 rotations, also just make worm gear 14 and camshaft rotate an angle, thereby the automatic trace that reaches the braking excessive gaps is adjusted.
Claims (4)
1, a kind of structure improved arm for adjusting automobile brake clearance automatically, comprise a housing (1), the worm screw (3) of worm gear (14) being housed in housing (1) and matching with worm gear (14), the end of worm screw (3) is with overrunning clutch, go up a control arm of socket (4) and breach control panel (8) at housing (1), it is characterized in that, described overrunning clutch comprises clutch ring (7), gear (13) and helical spring (6), the three all is socketed on the worm screw (3), clutch ring (7) and gear (13) are set up in parallel, helical spring (6) is loaded in their endoporus, and its two ends are connected with clutch ring (7) and gear (13) respectively, inner side surface at clutch ring (7) has spline (71), and the position of going up corresponding to clutch ring (7) worm screw (3) has the spline (31) that is complementary with clutch ring (7) spline (71); Be provided with a toothed rack (9) in housing (1), the top of tooth bar (9) is meshed with gear (13), and there is a turning (91) lower end of tooth bar (9), and this turning (91) is embedded in the breach (81) of breach control panel (8).
2, structure improved arm for adjusting automobile brake clearance automatically according to claim 1, it is characterized in that, described worm screw (3) goes up the torsion spring of the other end socket (10) with respect to overrunning clutch, one end of torsion spring (10) is fixed on the worm screw (3), and the other end is fixed on the housing (1).
3, structure improved arm for adjusting automobile brake clearance automatically according to claim 1 and 2 is characterized in that, is equipped with annular groove at the inner side surface of clutch ring (7) and gear (13), and helical spring (6) is installed in the annular groove.
4, structure improved arm for adjusting automobile brake clearance automatically according to claim 1 and 2 is characterized in that, is provided with spring (5) at the sidepiece of tooth bar (9), and the two ends of spring (5) are fixed on respectively on tooth bar (9) and the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020337 CN2690661Y (en) | 2004-02-18 | 2004-02-18 | Automatic regulating arm for structure improued automobile brake gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020337 CN2690661Y (en) | 2004-02-18 | 2004-02-18 | Automatic regulating arm for structure improued automobile brake gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2690661Y true CN2690661Y (en) | 2005-04-06 |
Family
ID=34669285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020337 Expired - Fee Related CN2690661Y (en) | 2004-02-18 | 2004-02-18 | Automatic regulating arm for structure improued automobile brake gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2690661Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425858C (en) * | 2006-05-08 | 2008-10-15 | 隆中控股集团有限公司 | Clutch of automatic arm for adjusting automobile brake clearance |
| CN108837614A (en) * | 2018-08-22 | 2018-11-20 | 南通海明环保科技有限公司 | A kind of environmental protection equipment of cloth bag easy to dismantle |
-
2004
- 2004-02-18 CN CN 200420020337 patent/CN2690661Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425858C (en) * | 2006-05-08 | 2008-10-15 | 隆中控股集团有限公司 | Clutch of automatic arm for adjusting automobile brake clearance |
| CN108837614A (en) * | 2018-08-22 | 2018-11-20 | 南通海明环保科技有限公司 | A kind of environmental protection equipment of cloth bag easy to dismantle |
| CN108837614B (en) * | 2018-08-22 | 2024-05-31 | 山西夜明珠科技有限公司 | Environment-friendly equipment convenient for dismantling cloth bag |
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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 |