CN101865225B - Automatic adjusting arm for automobile brake clearance - Google Patents
Automatic adjusting arm for automobile brake clearance Download PDFInfo
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- CN101865225B CN101865225B CN2010102124886A CN201010212488A CN101865225B CN 101865225 B CN101865225 B CN 101865225B CN 2010102124886 A CN2010102124886 A CN 2010102124886A CN 201010212488 A CN201010212488 A CN 201010212488A CN 101865225 B CN101865225 B CN 101865225B
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Abstract
The invention provides an automatic adjusting arm for an automobile brake clearance, which belongs to the technical field of automobiles. The invention solves the problems of complex structure and low stability of the prior automatic adjusting arm. The automatic adjusting arm for the automobile brake clearance comprises an adjusting arm body, a worm shaft, a worm wheel, a worm and a control disc, wherein the control disc is connected with the adjusting arm body and can rotate relative to the adjusting arm body; the inner end of the worm shaft is fixed with the worm, and the outer end is provided with a one-way clutch; the one-way clutch comprises a spring and a clutch sleeve provided with a groove; the spring is sheathed on the worm shaft, and both ends of the spring respectively act on the clutch sleeve and the adjusting arm body; a pendulum bar is also arranged in the adjusting arm body; one end of the pendulum bar is embedded in the control disc; and a gear knob bent up at the other end of the pendulum bar, extends into the groove, and can move in the groove or drive the clutch sleeve to rotate. By utilizing the structure and connection mode of the one-way clutch, pendulum bar and a worm gear, the invention has the advantages of simple structure, convenient installation, high use stability and accurate adjustment for the automobile braking clearance.
Description
Technical field
The invention belongs to automobile technical field, relate to a kind of adjustment arm, particularly a kind ofly can carry out self-adjusting arm for adjusting automobile brake clearance automatically vehicle brake gap.
Background technique
Automobile is in when braking, generally is to utilize the frictional force that is produced when contacting between brake shoe and the brake drum to realize.In the process of driving, can contact friction continually between brake shoe and the brake drum, because abrasive action, the gap between brake shoe and the brake drum can abrasiveness become big, this can have influence on the automobile arrestment mechanism Security of going in the process of moving.In order to improve traveling security, in existing automobile braking mechanism, often be provided with automatic adjustment arm or hand regulation arm.These adjustment arms can between brake shoe and the brake drum because of gap the compensating property adjustment that increased of back of wearing and tearing, thereby make brake clearance between the two can remain on a constant value, improved the Security of automobile braking mechanism work.
In existing automatic adjustment arm, generally comprise parts such as housing, control unit, worm gear, worm screw, tooth bar, return spring, overrunning clutch.Like existing notice of authorization CN 2690661Y, a kind of structure improved arm for adjusting automobile brake clearance automatically of the patent No. 200420020337.0: comprise 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 is characterized in that described overrunning clutch comprises clutch ring, gear and helical spring on housing; The three all is socketed on the worm screw; Clutch ring and gear are set up in parallel, and 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; In housing, be provided with a toothed rack, 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.
The automatic adjustment arm of said structure; When break is keeping normal brake clearance: adjust arm this moment and do the braking swing; The turning of tooth bar relative swing and do not have any move in the breach of breach control panel; Be that tooth bar does not slide up and down, worm screw does not rotate with respect to worm gear, does not promptly do the adjustment of brake clearance; When break produced excessive gaps, the tooth bar turning was in the increasing of the final stage of braking along with the angular displacement of adjustment arm, and the tooth bar turning is promoted upwards trace of slippage by the breach of breach control panel, and just the rack drives gear rotates an angle; When braking is removed; The return spring that the adjustment arm is braked air chamber is returned to the original state of air chamber; The adjustment arm turns round gradually, and when contacting and slippage downwards gradually with the tooth bar turning above the stage breach control panel breach to the end, promptly tooth bar moves down and driven gear and angle of worm screw rotation; Also just make worm gear and camshaft rotate an angle, thereby reach the automatic trace adjustment of braking excessive gaps.
In use there are many defectives in the automatic adjustment arm of said structure:
1, because of frequent the contacting of breach both sides with tooth bar eight pin, wear extent can progressively increase, and the distance of idle stroke progressively increases during braking, finally causes tooth bar can't promote gear and rotates; In addition, spring can not guarantee that tooth bar can return to initial position, so the adjustment arm of this structure can't correctly compensate the gap width that is increased because of the back of wearing and tearing between brake shoe and the brake drum;
2, overrunning clutch adopts the structure of clutch cover, helical spring and gear; The fowl trap is connected with worm shaft through spline; And realize the one-way rotation of gear through helical spring; This overrunning clutch complex structure, receive the less stable that influences of helical spring angular flexibility, can't guarantee the one-way clutch function of gear for a long time.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology, a kind of arm for adjusting automobile brake clearance automatically of simple in structure, good stability is provided.
The object of the invention can be realized through following technical proposal: a kind of arm for adjusting automobile brake clearance automatically; Comprise the adjustment arm body, be located at worm shaft, intermeshing worm gear and the worm screw in the adjustment arm body and be connected the control panel on the adjustment arm body; Described adjustment arm body control panel relatively rotates, and described worm shaft the inner is located in the worm screw and is connected with worm screw, it is characterized in that; The outer end of described worm shaft is provided with overrunning clutch; Described overrunning clutch comprises the clutch cover of spring and tubular, and described clutch cover excircle is provided with groove, described clutch cover be enclosed within on the worm shaft and the end face of clutch cover and worm shaft between be provided with the one-way clutch structure; Described spring housing is on worm shaft, and its two ends act on clutch cover respectively and adjust on the arm body; Also be provided with a fork in the described adjustment arm body; One end of described fork is embedded on the control panel; The other end has the retaining head of having bent; Described retaining head extend in the groove of clutch cover and has the gap between the clutch cover, and when the relative control panel of adjustment arm body rotated, described retaining head can move or drive the clutch cover rotation in groove.
Control panel in the arm for adjusting automobile brake clearance automatically of the present invention is connected on the vehicle body, and the worm gear of adjustment arm is connected on the camshaft.On worm shaft, through the one-way clutch structure, clutch cover worm shaft relatively rotates or rotates synchronously with worm shaft clutch cover through the spring roof pressure.One end of fork is embedded in control panel rotation relatively on the control panel, and the other end is positioned at the groove of clutch cover.In braking process: when having normal gap between brake shoe and the brake drum, the relative control panel rotation of adjustment arm, this moment, fork rotated, and a retaining straight line moves and drives the clutch cover rotation, rotates but clutch cover can not drive worm shaft.When the gap of brake shoe and brake drum became greater to a rating value because of wearing and tearing, the adjustment arm turned over an angle again under the situation of normal brake application gap rotation angle; This moment, fork also rotated again; The retaining head upwards moves in groove, and the roof pressure clutch cover, and the clutch cover pressure spring moves along worm shaft is inner; Circumferentially through and worm shaft between the relative worm shaft of one-way clutch structure rotate, rotate but clutch cover does not drive worm shaft; When braking force is cancelled; The relative control panel revolution of adjustment arm, this moment, fork also turned round, and the retaining head moves down in groove; And finally promote clutch cover through the rotation of one-way clutch structure drive worm shaft; Worm screw is rotated an angle, also makes worm gear and camshaft rotate an angular displacement, thereby reaches the automatic adjustment of braking excessive gaps.
In above-mentioned arm for adjusting automobile brake clearance automatically, the outer end of described worm shaft has convex shoulder, and an end face of above-mentioned clutch cover can lean on convex shoulder.
In above-mentioned arm for adjusting automobile brake clearance automatically, described one-way clutch structure comprises on clutch cover one end face unidirectional tooth two that distributes ringwise on the convex shoulder of the unidirectional tooth one that distributes ringwise and worm shaft, described unidirectional tooth one can with unidirectional tooth two engagements.
The one-way clutch structure is the unidirectional tooth one on unidirectional tooth two and the clutch cover end face on the worm shaft convex shoulder, and the relative worm shaft of one-way performance during with unidirectional tooth two cooperations freely rotates clutch cover through unidirectional tooth one, perhaps drives worm shaft and rotates synchronously.
In above-mentioned arm for adjusting automobile brake clearance automatically, offer opening slot on the described control panel, an end of described fork has the plush copper that can cooperate with opening slot, and described plush copper is arranged in the opening slot and can in opening slot, rotates.The size of plush copper is greater than other size of the fork that links to each other, can rotate the relative control panel of fork ability is swung thereby plush copper is positioned at opening slot.
In above-mentioned arm for adjusting automobile brake clearance automatically; Described opening slot has the inner side surface of arc; Offer the opening that runs through inner side surface at the opening slot place; Described plush copper has the outer side surface of arc, and described fork stretches into opening, and the outer side surface of its plush copper cooperates formation to be rotationally connected with the inner side surface of opening slot.This structure can be swung fork in the scope of opening.
In above-mentioned arm for adjusting automobile brake clearance automatically, described opening is less than 1/2nd circular arcs.This is provided with and can prevents that plush copper from skidding off from the opening of opening slot.
In above-mentioned arm for adjusting automobile brake clearance automatically, has the retaining edge on the edge of described control panel.When the adjustment arm rotated, retaining was along being resisted against on the adjustment arm body, and retaining is continued to use the angle of rotating around control panel in restriction adjustment arm.
In above-mentioned arm for adjusting automobile brake clearance automatically, be fixed with split ring in the described adjustment arm body, described worm shaft is arranged in the split ring, and circumferentially is rotationally connected with the split ring axial restraint.Split ring is fixedly connected with the adjustment arm, and split ring axially also is fixedly connected with worm shaft, thereby has limited moving axially of worm shaft.
In above-mentioned arm for adjusting automobile brake clearance automatically, described worm shaft and worm screw interference fit.This structure makes the not relative worm shaft of worm screw do axial motion, has reduced the distance of idle stroke.
In above-mentioned arm for adjusting automobile brake clearance automatically, offer three grooves on the described clutch cover, described three grooves have different groove widths.The needs of idle stroke size when this is provided with satisfied brake, required idle stroke is bigger, selects the groove of broad when then installing for use; Required idle stroke is less, selects narrower groove when then installing for use.
Compared with prior art, arm for adjusting automobile brake clearance automatically of the present invention has the following advantages:
1, among the present invention fork and control panel are arranged to hinged structure, fork and clutch cover are arranged to separable structure, have not only avoided existing adjustment arm to adopt the existing defective of rack structure, and have simplified the structure, reduced cost;
2, overrunning clutch rotates for directly realizing one-way rotation or drive worm shaft through the unidirectional tooth between clutch cover and the worm shaft synchronously, and is simple in structure, easy to process, one-way clutch function-stable in the use;
3, worm screw and worm shaft close-fitting merga pass split ring have limited worm shaft and moved axially, and have reduced the distance of idle stroke, and be simple in structure, easy for installation.
Description of drawings
Fig. 1 is the part section structural representation of this arm for adjusting automobile brake clearance automatically.
Fig. 2 is the cross-sectional view of A-A among this arm for adjusting automobile brake clearance automatically Fig. 1.
Fig. 3 is the structural representation of fork in this arm for adjusting automobile brake clearance automatically
Fig. 4 is the left view of Fig. 3 in this arm for adjusting automobile brake clearance automatically.
Fig. 5 is the structural representation of worm shaft in this arm for adjusting automobile brake clearance automatically.
Fig. 6 is the cross-sectional view of clutch cover in this arm for adjusting automobile brake clearance automatically.
Fig. 7 is the cross-sectional view of B-B among this arm for adjusting automobile brake clearance automatically Fig. 2.
Fig. 8 is the structural representation when control panel is connected with cover plate in this arm for adjusting automobile brake clearance automatically.
Among the figure, adjustment arm body 1, receiving cavity 11, worm shaft 2, convex shoulder 21, unidirectional tooth 2 22, worm gear 3, worm screw 4, control panel 5, setting sleeve 51, upper overturning 51a, down flange 51b, convex edge 51c, backing plate 52, opening slot 52a, opening 52b, inner side surface 52c, retaining along 53, support 6, clutch cover 7, unidirectional tooth 1, groove 72, spring 8, fork 9, plush copper 91, breach 91a, outer side surface 91b, retaining 92, pad 100, split ring 101, cover plate 102, screw 103.
Embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technological scheme of the present invention is done further to describe, but the present invention is not limited to these embodiments.
Like Fig. 1, shown in Figure 2, arm for adjusting automobile brake clearance automatically of the present invention comprises adjustment arm body 1, cover plate 102, worm shaft 2, worm screw 4, worm gear 3, overrunning clutch, control panel 5, fork 9, pad 100 and split ring 101.
Adjustment arm body 1 has the cavity that holds worm shaft 2, worm screw 4 and worm gear 3, and worm shaft 2, worm screw 4 and worm gear 3 are arranged in the cavity of adjustment arm body 1.As shown in Figure 5, the outer end of worm shaft 2 has convex shoulder 21, and convex shoulder 21 is provided with the unidirectional tooth 2 22 that distributes ringwise.The inner of worm shaft 2 is located in the worm screw 4 and is fixedly connected with worm screw 4, and the worm shaft 2 among the present invention and worm screw 4 are fixedly connected through interference fit, and worm screw 4 is adjusted arm body 1 interior worm gear 3 and meshes with being arranged on.
Like Fig. 2, Fig. 5, Fig. 6 and shown in Figure 7, overrunning clutch comprises the clutch cover 7 and spring 8 that all is enclosed within on the worm shaft 2.Have three grooves 72 on clutch cover 7 outer peripheral surfaces of tubular, these three grooves 72 run through an end face of clutch cover 7, and three grooves 72 have different groove widths.The needs of the groove 72 that three different groove widths are set idle stroke size when satisfying brake: required idle stroke is bigger, selects the groove 72 of broad when then installing for use; Required idle stroke is less, selects narrower groove 72 when then installing for use; Have the unidirectional tooth 1 that distributes ringwise on the other end of clutch cover 7, this unidirectional tooth 1 can cooperate with the unidirectional tooth 2 22 on the worm shaft 2, and the unidirectional tooth 1 among the present invention all has 20 teeth with unidirectional tooth 2 22.Pad 100 is enclosed within on the worm shaft 2 with split ring 101, and clutch cover 7, spring 8, pad 100 and split ring 101 are provided with from the outer end of worm shaft 2 successively inward.Spring 8 one ends lean on the end face of clutch cover 7, and the other end leans on pad 100, and the spring 8 among the present invention is a pressure spring.Split ring 101 is arranged between pad 100 and the adjustment arm body 1; Four angle roof pressures in its outside are fixedly connected with adjustment arm body 1 on adjustment arm body 1; The inboard is clamped in and is used to limit worm shaft 2 on the screw axis and moves axially; Thereby make worm screw 4 axial motion can not take place, reduce the distance of idle stroke.
Like Fig. 1 and shown in Figure 8, cover plate 102 is fixed on the adjustment arm body 1 through screw 103, and control panel 5 is connected with cover plate 102.Control panel 5 among the present invention comprises setting sleeve 51, backing plate 52 and support 6, and the setting sleeve 51 of ring-type has upper overturning 51a and following flange 51b.All has through hole on cover plate 102, backing plate 52 and the support 6; Cover plate 102, backing plate 52 and support 6 are enclosed within on the setting sleeve 51, and cover plate 102 is between backing plate 52 and support 6, and the upper overturning 51a roof pressure of setting sleeve 51 is fixedly connected with support 6 on support 6; Following flange 51b leans on backing plate 52 and is connected through bearing pin and backing plate 52; Following flange 51b and backing plate 52 have laterally outstanding retaining along 53, and bearing pin is arranged on retaining along on 53, and cover plate 102 can relative positionings cover 51, backing plate 52 and support 6 threes rotate.On backing plate 52, be provided with opening slot 52a; Opening slot 52a has the inner side surface 52c of arc; Opening slot 52a has the opening 52b that runs through inner side surface 52c, and the opening 52b among the present invention has the convex edge 51c that extend into arc opening groove 52a on the flange 51b down less than 1/2nd circular arcs.
Like Fig. 1, Fig. 3 and shown in Figure 4; One end of fork 9 has plush copper 91; Have breach 91a on one end face of plush copper 91, plush copper 91 has the outer side surface 91b of arc, and the size of plush copper 91 is greater than other size of the fork 9 that links to each other; Plush copper 91 stretches into its outer side surface of opening 52b 91b and cooperates formation to be rotationally connected with the inner side surface 52c of opening slot 52a, and convex edge 51c is arranged on the breach 91a place of plush copper 91.Plush copper 91 is positioned at the opening slot 52a less than the opening 52b of 1/2nd circular arcs, makes that plush copper 91 can not thrown off from opening 52b when rotating, and the opening 52b size of opening slot 52a has also limited the rotation angle of fork 9 in addition; Convex edge 51c on the setting sleeve 51 and cover plate 102 have limited plush copper 91 axially skidding off from opening slot 52a again.The other end of fork 9 has the retaining bent 92; Retaining 92 is arranged on a groove 72 of clutch cover 7; Retaining 92 has the gap with groove 72, and when retaining 92 a roof pressure clutch cover 7 rotated, retaining 92 can skid off groove 72 and be positioned at the preset receiving cavity 11 of adjustment arm body 1.
Retaining is arranged in the cavity of the adjustment arm body 1 that is used for holding worm screw 4 usefulness along 53, and when the adjustment arm rotated, retaining was swung in this cavity along 53, and retaining is along between two sidewalls of scope for adjustment arm body 1 of 53 swings.Ultimate range was for to receiving cavity 11 positions when the retaining of fork 9 92 moved when the effect of this setting was rotated the adjustment arm, and when retaining 92 is moved roof pressure to adjustment arm body 1, thereby the working life of influence adjustment arm and adjustment precision.
Support 6 in the arm for adjusting automobile brake clearance automatically of the present invention is connected on the vehicle body, and the worm gear 3 of adjustment arm is connected on the camshaft.As shown in fig. 1, the adjustment arm is that the center rotates counterclockwise with the shaft axis of worm gear 3 during braking.When having normal gap between brake shoe and the brake drum: the adjustment arm rotates counterclockwise the α angle; Fork 9 rotates counterclockwise around control panel 5; The retaining of fork 9 92 a relative groove 72 move up and promote angle of clutch cover 7 rotations; But rotation angle is less than 18 degree, and promptly clutch cover 7 does not have relative worm shaft 2 to slip over a tooth; When braking force was cancelled, the adjustment arm clockwise rotated, and the retaining of fork 9 92 a relative groove 72 move down, and this moment, fork 9 can not drive worm shaft 2 rotations through clutch cover 7.When the gap of brake shoe and brake drum became greater to a rating value because of wearing and tearing, the adjustment arm needed under the situation of rotating the α angle, to rotate counterclockwise an angle again; The upper edge of the 92 promotion groove 72 of the retaining on the fork 9 makes unidirectional tooth 2 22 slide relative of unidirectional tooth 1 with the worm shaft 2 of clutch cover 7 at this moment; Clutch cover 7 roof pressure pressure springs move vertically, and clutch cover 7 rotates an angle, and rotation angle is greater than 18 degree; Be that the relative worm shaft 2 of clutch cover turns over a tooth; This moment retaining 92 separates with clutch cover 7, and retaining 92 is positioned at receiving cavity 11, and the unidirectional tooth 1 on the clutch cover 7 is in engagement again with the unidirectional tooth 2 22 on the worm shaft 2; When braking force was cancelled, the adjustment arm turned round clockwise, and the retaining of fork 9 92 a relative groove 72 move down and get back in the groove 72; Clockwise rotate in the α angle at the adjustment arm, retaining 92 is all mobile groove 72 in, but the lower edge of roof pressure clutch cover 7 not; When rotating above the α angle, the lower edge of retaining 92 a roof pressure clutch cover 7, clutch cover 7 promotes the unidirectional tooth 2 22 of worm shafts 2 through unidirectional tooth 1; Thereby driving worm shaft 2 rotates with clutch cover 7 synchronously; Worm screw 4 is rotated with worm shaft 2 together, also just makes worm gear 3 and camshaft rotate an angle, thereby reaches the automatic trace adjustment of braking excessive gaps.
Although this paper used morely adjustment arm body 1, receiving cavity 11, worm shaft 2, convex shoulder 21, unidirectional tooth 2 22, worm gear 3, worm screw 4, control panel 5, setting sleeve 51, upper overturning 51a, down flange 51b, convex edge 51c, backing plate 52, opening slot 52a, opening 52b, inner side surface 52c, retaining along 53, terms such as support 6, clutch cover 7, unidirectional tooth 1, groove 72, spring 8, fork 9, plush copper 91, breach 91a, outer side surface 91b, retaining 92, pad 100, split ring 101, cover plate 102, screw 103, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (6)
1. arm for adjusting automobile brake clearance automatically; Comprise adjustment arm body (1), be located at worm shaft (2), intermeshing worm gear (3) and the worm screw (4) in the adjustment arm body (1) and be connected the control panel (5) on the adjustment arm body (1); Described adjustment arm body (1) control panel (5) relatively rotates; Described worm shaft (2) the inner is located in the worm screw (4) and is connected with worm screw (4); It is characterized in that the outer end of described worm shaft (2) is provided with overrunning clutch, described overrunning clutch comprises the clutch cover (7) of spring (8) and tubular; Described clutch cover (7) excircle is provided with groove (72); Described clutch cover (7) is enclosed within worm shaft (2) and upward and between the end face of clutch cover (7) and the worm shaft (2) is provided with the one-way clutch structure, and described spring (8) is enclosed within on the worm shaft (2), and its two ends act on respectively on clutch cover (7) and the adjustment arm body (1); Also be provided with a fork (9) in the described adjustment arm body (1); One end of described fork (9) is embedded on the control panel (5); The other end has the retaining head of having bent (92); Described retaining head (92) extend in the groove (72) of clutch cover (7) with between the clutch cover (7) has the gap, and when adjustment arm body (1) when control panel (5) rotates relatively, described retaining head (92) can move or drive clutch cover (7) rotation in groove (72); Be fixed with split ring (101) in the described adjustment arm body (1), described worm shaft (2) is arranged in the split ring (101), and circumferentially is rotationally connected with split ring (101) axial restraint; Offer opening slot (52a) on the described control panel (5), an end of described fork (9) has the plush copper (91) that can cooperate with opening slot (52a), and described plush copper (91) is arranged in the opening slot (52a) and can in opening slot (52a), rotates; Described opening slot (52a) has the inner side surface (52c) of arc; Locate to offer the opening (52b) that runs through inner side surface (52c) at opening slot (52a); Described plush copper (91) has the outer side surface (91b) of arc; Described fork (9) stretches into opening (52b), and the outer side surface (91b) of plush copper (91) cooperates formation to be rotationally connected with the inner side surface (52c) of opening slot (52a); Described arm for adjusting automobile brake clearance automatically comprises cover plate (102), and described cover plate (102) is fixed on the adjustment arm body (1) through screw (103), and control panel (5) is connected with cover plate (102); Described control panel (5) comprises setting sleeve (51), backing plate (52) and support (6); The setting sleeve of ring-type (51) has upper overturning (51a) and following flange (51b); Cover plate (102), backing plate (52) and support (6) are enclosed within on the setting sleeve (51); Upper overturning (51a) roof pressure of setting sleeve (51) is gone up at support (6) and is fixedly connected with support (6); Following flange (51b) leans at backing plate (52) and upward is connected through bearing pin and backing plate (52), and cover plate (102) is positioned between backing plate (52) and the support (6), and cover plate (102) ability relative positioning cover (51), backing plate (52) and support (6) three rotate; Described opening slot (52a) is opened on the backing plate (52), has the convex edge (51c) that extend into arc opening groove (52a) on the flange (51b) down; Has breach (91a) on one end face of described plush copper (91); Convex edge (51c) is arranged on the breach (91a) of plush copper (91) and locates, and convex edge (51c) on the setting sleeve (51) and cover plate (102) have limited plush copper (91) axially skidding off from opening slot (52a) again; Offer three grooves (72) on the described clutch cover (7), described three grooves (72) have different groove widths.
2. arm for adjusting automobile brake clearance automatically according to claim 1 is characterized in that, the outer end of described worm shaft (2) has convex shoulder (21), and an end face of above-mentioned clutch cover (7) can lean on convex shoulder (21).
3. arm for adjusting automobile brake clearance automatically according to claim 2; It is characterized in that; Described one-way clutch structure comprises on clutch cover (7) one end faces unidirectional tooth two (22) that distributes ringwise on the convex shoulder (21) of the unidirectional tooth one (71) that distributes ringwise and worm shaft (2), and described unidirectional tooth one (71) can mesh with unidirectional tooth two (22).
4. arm for adjusting automobile brake clearance automatically according to claim 1 is characterized in that, described opening (52b) is less than 1/2nd circular arcs.
5. according to claim 1 or 2 or 3 described arm for adjusting automobile brake clearance automatically, it is characterized in that having retaining on the edge of described control panel (5) along (53).
6. according to claim 1 or 2 or 3 described arm for adjusting automobile brake clearance automatically, it is characterized in that described worm shaft (2) and worm screw (4) interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102124886A CN101865225B (en) | 2010-06-29 | 2010-06-29 | Automatic adjusting arm for automobile brake clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102124886A CN101865225B (en) | 2010-06-29 | 2010-06-29 | Automatic adjusting arm for automobile brake clearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865225A CN101865225A (en) | 2010-10-20 |
| CN101865225B true CN101865225B (en) | 2012-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102124886A Active CN101865225B (en) | 2010-06-29 | 2010-06-29 | Automatic adjusting arm for automobile brake clearance |
Country Status (1)
| Country | Link |
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| CN (1) | CN101865225B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893048A (en) * | 2010-07-13 | 2010-11-24 | Bpw(梅州）车轴有限公司 | Adjustment device for automatically adjusting clearance of automotive brake |
| CN103047328A (en) * | 2012-12-20 | 2013-04-17 | 青特集团有限公司 | Brake adjusting arm |
| CN106246770B (en) * | 2016-09-13 | 2019-08-02 | 广州市润浩汽车配件有限公司 | Braking gap automatically adjusts arm |
| CN107366698B (en) * | 2017-09-11 | 2023-10-13 | 隆中控股集团股份有限公司 | Wear indicator for adjusting arm and brake clearance adjusting arm |
| CN111908297B (en) * | 2020-08-12 | 2021-09-28 | 安徽理工大学 | Monitoring system of disc brake of elevator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583622A (en) * | 1984-03-15 | 1986-04-22 | Bergische Achsenfabrik Fr. Kotz & Sohne | Adjusting device for vehicle brakes |
| CN2143691Y (en) * | 1992-07-17 | 1993-10-13 | 叶旅 | Automatic adjuster for braking gap of drum brake |
| CN201050567Y (en) * | 2007-03-23 | 2008-04-23 | 王升 | Automatic regulation arm for braking gap |
-
2010
- 2010-06-29 CN CN2010102124886A patent/CN101865225B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583622A (en) * | 1984-03-15 | 1986-04-22 | Bergische Achsenfabrik Fr. Kotz & Sohne | Adjusting device for vehicle brakes |
| CN2143691Y (en) * | 1992-07-17 | 1993-10-13 | 叶旅 | Automatic adjuster for braking gap of drum brake |
| CN201050567Y (en) * | 2007-03-23 | 2008-04-23 | 王升 | Automatic regulation arm for braking gap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101865225A (en) | 2010-10-20 |
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