CN103244583A - Brake clearance manual adjusting arm device with umbrella tooth structures arranged at two ends of worm - Google Patents
Brake clearance manual adjusting arm device with umbrella tooth structures arranged at two ends of worm Download PDFInfo
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- CN103244583A CN103244583A CN 201310113472 CN201310113472A CN103244583A CN 103244583 A CN103244583 A CN 103244583A CN 201310113472 CN201310113472 CN 201310113472 CN 201310113472 A CN201310113472 A CN 201310113472A CN 103244583 A CN103244583 A CN 103244583A
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- worm screw
- adjusting arm
- umbrella
- worm
- brake clearance
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Abstract
The invention discloses a brake clearance manual adjusting arm device with umbrella tooth structures arranged at two ends of a worm. Elastic material working holes with angles are arranged on two fitting surfaces of the worm as well as the front end and the back end of an adjusting arm shell; the umbrella tooth structures at two ends of the worm fit with the elastic material working holes; self-locking is performed on the umbrella tooth structures of the worm by the elastic material at two ends of the shell; and since rigid hardness of the worm is higher than hardness of the adjusting arm shell, for a rack of the umbrella tooth structures on the worm and fitting surfaces of the adjusting arm shell, in an impact process of braking force and reverse braking force, the fitting surfaces of the adjusting arm shell is impacted by the toothed rack of the umbrella tooth structures on the worm to form a gear groove symmetrical with the toothed rack of the umbrella tooth structures. The brake clearance manual adjusting arm device has the advantages of long service life, quick braking, rapid return and convenience in adjustment; assembly is free of restraint on a braking force direction; synchronous motion of the adjusting arm shell and a turbine is implemented; frequent changing is avoided; and sensitivity, reliability and safety of a brake system are further improved.
Description
Technical field
The present invention relates to the brake clearance manual adjusting arm device that a kind of worm screw two ends in the brake system of car are provided with the umbrella toothing.
Background technique
In existing brake system of car, automobile braking adjusting arm is mainly by adjusting arm housing, turbine, parts such as worm screw are formed, thereby drive the cam rotation by adjusting the worm screw rotary turbine, eliminate the unnecessary gap between friction facing and the brake drum, to reach best braking effect, adjust arm and also undertaking the transmission braking torque, the function of braking and return, so requiring in the course of the work can self-locking, and require working life of having higher requirements.And general employing of existing adjustment arm exchanged bearing and carried out self-locking, its working life is very short, its inner turbine, the frequent self-locking of worm screw and locking device mechanism was lost efficacy, and caused turbine and braking adjusting arm housing not to be synchronized with the movement, make vehicle when braking, stop after the deceleration untimely, return fully during end of braking, this driving hidden danger just occurred, therefore these parts must frequently be changed, and cause unnecessary waste.Self-locking was lost efficacy and mainly formed by following factor: in existing brake system of car, automobile braking adjusting arm is mainly by adjusting arm housing, turbine, parts such as worm screw are formed, the modulus of both teeth of its turbine and worm, standard pitch diameter, the helical pressure angle is all identical, both are in overlapping transmission moment of torsion acting process, because worm screw is caused turbine to exchange bearing and reaction thrust occurs the frequent reciprocal braking impact force of turbine, cause adjusting the axle backspin, brake clearance is strengthened, and braking distance lengthens, braking failure.Its backspin power is that general shaft type " locking " device is irresistible, and shaft type " locking " device is destroyed.Auto vendor is studied this problem all the time, " locking " device of several different structures was also appearring on the market, its basic " locking " object all is to adjust axle, make in the Motor Vehicle Braking Procedure adjust axle can not backspin, but because turbine is violent to the braking reaction thrust impact of worm screw and adjustment axle in the braking process, back and forth frequent, destroyed the locking device of adjusting on the axle, even directly destroyed and adjust arm housing.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of worm screw two ends to be provided with the brake clearance manual adjusting arm device of umbrella toothing, this structure is provided with the umbrella toothing at the worm screw two ends, be provided with the elastic material working hole that has angle at two matching surfaces of adjusting arm housing rear and front end and worm screw, steel ball in the umbrella toothing at worm screw two ends and the flexible material working hole coincide mutually, the elastic material at its housing two ends is implemented self-locking to worm screw umbrella toothing, simultaneously since the rigidity hardness of worm screw greater than the hardness of adjusting arm housing, the tooth bar of the umbrella toothing on the worm screw and the matching surface of adjusting arm housing, in braking force and counter braking force impact process, umbrella gear rack on the worm screw will be adjusted the identical plane of arm housing, impact into the roller seating space symmetrical with the umbrella gear rack, so just more strengthened the intensity of self-locking.Its advantage is to use the life-span long, and braking is rapid, and return is fast, easy to adjust, the not constraint of restricted power direction is installed, realize adjusting being synchronized with the movement of arm housing and turbine, avoid frequent replacing, further improved sensitivity, reliability, the Security of braking system.
The objective of the invention is to realize by following measure: it is mainly by adjusting arm housing, turbine, worm screw is adjusted axle, steel ball, spring, the spring compression bolt is formed, and the two ends of worm screw are provided with the tooth bar of umbrella toothing, between two matching surfaces of adjusting arm housing rear and front end and worm screw, be provided with the elastic material working hole that has angle, spring is housed, steel ball, spring compression bolt in working hole.
Described a kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing, because the rigidity hardness of worm screw is greater than the hardness of adjusting arm housing, the tooth bar of the umbrella toothing on the worm screw and the matching surface of adjusting arm housing, in braking force and counter braking force impact process, umbrella gear rack on the worm screw will be adjusted the identical plane of arm housing, impact into the roller seating space symmetrical with the umbrella gear rack, so just more strengthened the intensity of self-locking.
Described a kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing, at the elastic material working hole of adjusting on the arm housing, can be arranged to single face 1-6 hole or two-sided 1-6 hole.
Described a kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing, be provided with the tooth bar of umbrella toothing at the two ends of worm screw, modulus can be set to 1 modulus-10 modulus, the number of teeth can be set to 2 teeth-20 tooth, the angle of umbrella tooth, can be set to 20 degree-68 degree, the height of umbrella tooth can be set to 1 millimeter-7.5 millimeters.
The brake clearance that described a kind of worm screw two ends are provided with the umbrella toothing is manually adjusted and is put, the angle of elastic material working hole can be set to 17 degree---83 degree, the diameter of working hole can be set to 6 millimeters---16 millimeters.
Technological scheme of the present invention, when vehicle is implemented to adjust brake clearance, just, anti-two direction rotary worms are adjusted axle, it is adjusted moment of torsion and has surpassed steel ball to the impacting force of worm screw two ends umbrella gear rack, be installed in that worm screw is adjusted worm screw on the axle and the umbrella tooth at two ends begins to rotate, at this moment, adjust the steel ball in the working hole of arm housing rear and front end, be subjected to the reaction thrust of umbrella gear rack, steel ball in the working hole begins at the bottom of the rack tooth after the motion of tooth top direction and cross tooth top, the pressure that is subjected to return spring in working hole return at the bottom of the tooth matches, significantly " click click " sound is arranged this moment, worm screw is rotated and drives the turbine rotation simultaneously, can be arranged to single face umbrella gear rack structure for some pick up trucks and special vehicle worm screw, and the elastic material working hole also can be arranged to single face on the housing simultaneously.
Description of drawings
Fig. 1 is erection drawing of the present invention;
Fig. 2 is the schematic representation that the present invention is arranged on the elastic material working hole on the housing;
Fig. 3 is the work structuring schematic representation of worm screw umbrella tooth of the present invention and elastic material working hole;
Fig. 4 is worm screw umbrella gear rack of the present invention and steel ball at the bottom of the tooth to the work schematic representation of tooth top motion.
Specific embodiments
As shown in Figure 1 and Figure 2, a kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing, band tooth bar worm screw locking of the present invention is adjusted arm and is mainly comprised adjustment arm housing (1), adjust axle (2), worm screw (3), turbine parts such as (4) are formed, owing to be provided with the elastic material working hole (5) that has angle between two matching surfaces of adjustment arm housing (1) and worm screw (3), the umbrella toothing at worm screw (3) two ends and the steel ball (7) in the flexible material working hole (5) coincide mutually.
When vehicle is implemented to adjust brake clearance, worm shaft (2) rotates, the umbrella gear rack at worm screw (3) two ends rotates simultaneously, overcome the middle steel ball (7) of working hole (5) to its pressure that produces, with steel ball (7) at the bottom of the tooth of umbrella gear rack to the motion of tooth top direction, and cross the pressure that is subjected to return spring (6) in the working hole (5) behind tooth top return at the bottom of the tooth and match.When automobile is implemented braking, adjust arm housing (1) stressed promotion worm screw (3), worm screw (3) power transmission is in turbine (4), owing to adjust the umbrella gear rack identical locking mutually that arm housing (1) and scroll bar (3) two matching surfaces are provided with steel ball (7) and worm screw (3) two ends, when braking, because the rigidity hardness of worm screw (3) is greater than the hardness of adjusting arm housing (1), the tooth bar of the umbrella toothing on the worm screw (3) and the matching surface of adjusting arm housing (1), in braking force and counter braking force impact process, umbrella gear rack on the worm screw (3) will be adjusted the identical plane of arm housing (1), impact into the roller seating space symmetrical with the umbrella gear rack, so just more strengthened the intensity of self-locking, its braking force is more strong, and the identical power of locking is more big.The braking force that worm screw (3) produces and the reaction thrust of turbine (4) can not cause adjusts axle (2) backspin, this braking adjusting arm has been avoided because adjusting the brake clearance increasing that axle (2) backspin causes, the phenomenon of braking failure, its advantage is to use the life-span long, can realize that braking rapidly, return is fast, easy to adjust, the not constraint of restricted power direction is installed, realize adjusting being synchronized with the movement of arm housing (1) and turbine (4), avoid frequent replacing, further improved sensitivity, reliability, the Security of braking system.
Claims (5)
1. worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing, it is mainly by adjusting arm housing (1), turbine (4), worm screw (3), adjust axle (2), steel ball (7), spring (6), spring compression bolt (8) is formed, it is characterized in that: the two ends of worm screw (3) are provided with the tooth bar of umbrella toothing, are provided with the elastic material working hole (5) that has angle between two matching surfaces of adjusting arm housing (1) rear and front end and worm screw (3), and spring (6) is housed in working hole, steel ball (7), spring compression bolt (8).
2. be provided with the brake clearance manual adjusting arm device of umbrella toothing according to the described a kind of worm screw of claim one two ends, it is characterized in that: because the rigidity hardness of worm screw (3) is greater than the hardness of adjusting arm housing (1), the tooth bar of the umbrella toothing on the worm screw (3) and the matching surface of adjusting arm housing (1), in braking force and counter braking force impact process, umbrella gear rack on the worm screw (3) will be adjusted the identical plane of arm housing (1), impact into the roller seating space symmetrical with the umbrella gear rack, so just more strengthened the intensity of self-locking.
3. be provided with the brake clearance manual adjusting arm device of umbrella toothing according to the described a kind of worm screw of claim one two ends, it is characterized in that: at the elastic material working hole of adjusting on the arm housing (1) (5), can be arranged to single face 1-6 hole or two-sided 1-6 hole.
4. be provided with the brake clearance manual adjusting arm device of umbrella toothing according to the described a kind of worm screw of claim one two ends, it is characterized in that: the tooth bar that is provided with the umbrella toothing at the two ends of worm screw (3), modulus can be set to 1 modulus-10 modulus, the number of teeth can be set to, 2 teeth-20 tooth, the angle of umbrella tooth can be set to 20 degree-68 degree, the height of umbrella tooth can be set to 1 millimeter-7.5 millimeters.
5. be provided with the brake clearance manual adjusting arm device of umbrella toothing according to the described a kind of worm screw of claim one two ends, it is characterized in that: the angle of elastic material working hole (5) can be set to 17 degree---83 degree, and the diameter of working hole can be set to 6 millimeters---and 16 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113472.3A CN103244583B (en) | 2013-04-03 | 2013-04-03 | A kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113472.3A CN103244583B (en) | 2013-04-03 | 2013-04-03 | A kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244583A true CN103244583A (en) | 2013-08-14 |
| CN103244583B CN103244583B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310113472.3A Active CN103244583B (en) | 2013-04-03 | 2013-04-03 | A kind of worm screw two ends are provided with the brake clearance manual adjusting arm device of umbrella toothing |
Country Status (1)
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| CN (1) | CN103244583B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3228796A1 (en) * | 1982-08-02 | 1984-02-02 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Automatic adjustment device for the brake lever of a brake |
| CN100497987C (en) * | 2007-04-17 | 2009-06-10 | 岳崙 | Arm for automatically regulating clearance of brake of automobile |
| CN201666323U (en) * | 2010-01-22 | 2010-12-08 | 黄石市重型汽车配件制造厂 | Gap adjuster |
| CN202338585U (en) * | 2011-12-01 | 2012-07-18 | 重庆卡福汽车制动转向系统有限公司 | Direct-arm manual adjusting arm worm device |
| CN203161925U (en) * | 2013-04-03 | 2013-08-28 | 绍兴铁安汽配制造有限公司 | Hand-operated brake clearance adjusting arm device with bevel gear structures arranged at two ends of worm |
-
2013
- 2013-04-03 CN CN201310113472.3A patent/CN103244583B/en active Active
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| Publication number | Publication date |
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| CN103244583B (en) | 2016-03-02 |
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Denomination of invention: The utility model relates to a braking clearance manual adjusting arm device with an umbrella tooth structure at both ends of a worm Effective date of registration: 20211216 Granted publication date: 20160302 Pledgee: Agricultural Bank of China Limited Zhuji sub branch Pledgor: SHAOXING TIE'AN AUTO PARTS MANUFACTURING Co.,Ltd. Registration number: Y2021980014992 |