CN200989403Y - Vehicle brake gap hand regulating arm - Google Patents
Vehicle brake gap hand regulating arm Download PDFInfo
- Publication number
- CN200989403Y CN200989403Y CN 200620046881 CN200620046881U CN200989403Y CN 200989403 Y CN200989403 Y CN 200989403Y CN 200620046881 CN200620046881 CN 200620046881 CN 200620046881 U CN200620046881 U CN 200620046881U CN 200989403 Y CN200989403 Y CN 200989403Y
- Authority
- CN
- China
- Prior art keywords
- automobile brake
- adjusting
- convex shoulder
- bolt
- arm housing
- 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 - Lifetime
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Abstract
The utility model provides an automobile brake-shoe clearance hand-operated adjusting arm belonging to an automobile technical field and solves the problem that the prior automobile brake-shoe clearance hand-operated adjusting arm is cumbered with the operations at the adjustment of the automobile brake-shoe clearance and the outside dust and impurities are easy to enter into the adjusting arm shell in blocking up the worm wheel and worm. The automobile brake-shoe clearance hand-operated adjusting arm is composed of an adjusting arm shell, a worm wheel and a worm arranged inside the adjusting arm shell body and engaged each other. The shell body inside is provided with an adjusting screw. The adjusting screw is passed through the worm and the outer side of the screw is extended out of the adjusting arm shell body. The worm is circumferentially fixed on the adjusting screw. A locating device preventing the adjusting screw from revolution relatively to the adjusting arm shell body by mean of the frictional resistance is arranged between the adjusting screw and the adjusting arm shell body. The utility model has the features of simple structure, convenient operation, prevention of the dust and impurities entering the adjusting arm shell body without any dedicated tools for adjustment of the automobile brake-shoe clearance.
Description
Technical field
The utility model belongs to automobile technical field, particularly a kind of adjustment arm that can carry out manual adjustment to 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, meeting 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 safety in utilization of arrestment mechanism 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 adjust arms can be to gap the compensating property adjustment that is increased because of the back of wearing and tearing between brake shoe and the brake drum, thereby makes brake clearance between the two can remain on a constant value, has improved the Security of automobile braking mechanism work.
The structure of existing automobile brake clearance manual adjusting arm comprises the adjustment arm housing, be located at intermeshing worm gear and the worm screw adjusted in the arm housing, wherein worm screw circumferentially is socketed on the adjusting bolt of being located in the adjustment arm housing regularly, an end of regulating bolt stretches out the outside of adjusting arm housing, and the external part of adjusting bolt is a prism.For make worm gear under the non-adjustment state not can and worm screw between relatively rotate, guarantee the self-locking action of worm screw to worm gear, on the adjustment arm housing, be provided with a setting sleeve with the corresponding position, position of regulating the bolt external part, this setting sleeve is inserted in gap to be adjusted in the arm housing, and relative with the adjustment arm housing circumferentially fixing.The structure in the setting sleeve and the structural similarity of plum blossom shaped spanner sleeve inner, the external part of regulating bolt is inserted in this setting sleeve, and setting sleeve can limit the rotation of regulating bolt.Be socketed with a pressure spring on the adjusting bolt between worm screw and setting sleeve, an end roof pressure of this pressure spring is on the interior edge face of setting sleeve.
When vehicle brake gap being adjusted by above-mentioned existing automobile brake clearance manual adjusting arm, needing to use special tool that setting sleeve is pressed into adjusts in the arm housing, external part and the setting sleeve of regulating bolt are separated, regulate the external part of bolt then with the spanner turn, the brake clearance of automobile is adjusted.
Existing this automobile brake clearance manual adjusting arm has following defective: at first, and complex structure; Secondly, when vehicle brake gap is adjusted, troublesome poeration; At last and since setting sleeve with adjust arm housing, and and to regulate between the bolt be Spielpassung, extraneous dust is easy to enter into the adjustment arm housing, this easily makes between worm gear and the worm screw stuck phenomenon takes place, and causes the inconvenience when brake clearance adjusted.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing automobile brake clearance manual adjusting arm, and provide a kind of simple in structure, when being adjusted, vehicle brake gap do not need to use special tool, easy to operate new automobile brake clearance manual adjusting arm.
Another purpose of the present utility model: provide a kind of and can improve the automobile brake clearance manual adjusting arm of adjusting working environment in the arm housing.
Above-mentioned purpose of the present utility model can realize by following technical proposal: a kind of automobile brake clearance manual adjusting arm, comprise the adjustment arm housing, be located at intermeshing worm gear and the worm screw adjusted in the arm housing, in above-mentioned adjustment arm housing, also be provided with the adjusting bolt, the adjusting bolt passes worm screw and its outer end portion is stretched out the adjustment arm housing, worm screw circumferentially is fixed in and regulates on the bolt, it is characterized in that, be provided with one between adjusting bolt and the adjustment arm housing and rely on surface friction drag to prevent to regulate bolt with respect to adjusting the positioning device that arm housing rotates.
After this automobile brake clearance manual adjusting arm was assemblied on the automobile, worm gear in the adjustment arm housing and the camshaft in the automobile braking mechanism circumferentially connected together regularly, adjusted arm housing and braking pedal and linked by linkage mechanism.When the driver jammed on braking pedal, braking pedal made the manual adjustment arm housing drive camshaft by linkage mechanism and rotates, realize braking by brake shoe and brake drum.When the gap in need be to automobile braking mechanism between brake shoe and the brake drum is adjusted, available spanner direct control is regulated the external part of bolt, make and regulate the surface friction drag that bolt overcomes above-mentioned positioning device, and the frictional force between worm gear and the worm screw, worm gear is rotated by worm screw, and the gap between the brake shoe and brake drum obtains adjusting in the automobile braking mechanism thereby make.Regulating the following time of state that bolt is in non-adjustment, described limit stoper is applied to the power of regulating on the bolt and can makes and can keep static relatively between the worm and wheel.
In this automobile brake clearance manual adjusting arm, described positioning device comprises the convex shoulder of regulating the bolt outer end, evenly have the recess of several arcs at the inner side surface of convex shoulder, in housing, have a positioning hole, be provided with spring and ball in the positioning hole, and at ball roof pressure under the effect of spring on above-mentioned recess.Under the effect of described spring force, the ball roof pressure is on convex shoulder in the set recess, and ball stops by the power that this recess is applied to be regulated bolt and rotate with respect to adjusting arm housing.
In this automobile brake clearance manual adjusting arm housing, described positioning device comprises the convex shoulder of regulating the bolt outer end, inner side surface at convex shoulder is corrugated, in housing, have a positioning hole, be provided with spring and ball in the positioning hole, and at ball roof pressure under the effect of spring on the inner side surface of above-mentioned convex shoulder.Described ball is being on the recessed inner side surface of undulatory convex shoulder at roof pressure under the effect of spring, has certain resistance between ball and the convex shoulder, and this resistance is used for stoping the adjusting bolt and rotates with respect to adjusting arm housing.
In this automobile brake clearance manual adjusting arm, between the outer end of regulating bolt and adjustment arm housing, be provided with seal ring.Seal ring can be arranged on to be adjusted on the arm housing, also can be arranged on the outer end of regulating bolt, and the seal ring that is provided with can stop extraneous dust can not enter into the inside of adjusting arm housing, has improved the working environment of adjusting in the arm housing.
In this automobile brake clearance manual adjusting arm, on the adjustment arm housing, be provided with receiving cavity, described convex shoulder is arranged in this receiving cavity.The degree of depth of this receiving cavity is general consistent with the height of convex shoulder, and convex shoulder can be contained in the receiving cavity fully.
In this automobile brake clearance manual adjusting arm, described seal ring is arranged between described convex shoulder and the receiving cavity.Impurity such as dust can enter by the space between convex shoulder and the receiving groove in the housing, influence the work of worm and gear.Groove is set between convex shoulder and receiving groove can prevents that impurity such as dust from entering.
In this automobile brake clearance manual adjusting arm, described convex shoulder is provided with the groove of a ring-type, and described seal ring is socketed in this groove, and protrudes the outer circumferential face of described convex shoulder.Seal ring is positioned, seal ring can not come off easily; The part that seal ring protrudes can with receiving groove inner side surface fitted seal better.
Compared with prior art, the beneficial effects of the utility model are:
1, between adjusting bolt and adjustment arm housing, is provided with limit stoper, this limit stoper prevents to regulate bolt and adjusts between the arm housing by surface friction drag and relatively rotates, when the brake clearance in the arrestment mechanism is adjusted, can directly regulate the outer end of bolt with wrench operated, making the adjusting bolt overcome the surface friction drag of described positioning device and drive worm gear by worm screw rotates, easy to operate, do not need to use special instrument, install easy to adjust.
2, compare with existing hand regulation arm, simple in structure, can not cause the inefficacy of self-locking action between worm gear and the worm screw because of reasons such as vibrations.
3, be provided with seal ring with adjusting between the arm housing regulating bolt, can stop extraneous dust to enter into effectively and adjust in the arm housing, be difficult for the generation stuck phenomenon between worm gear and the worm screw, guaranteed the smoothness when brake clearance adjusted.
Description of drawings
Fig. 1 is the partial sectional view of this automobile brake clearance manual adjusting arm;
Fig. 2 is a partial sectional view of adjusting arm housing in this automobile brake clearance manual adjusting arm.
Wherein, 1, adjust arm housing; 2, connecting hole; 3, spacing hole; 4, restraining groove; 5, worm screw; 6, worm gear; 7, spring; 8, ball; 9, convex shoulder; 10, groove; 11, seal ring; 12, recess; 13, regulate bolt; 14, positioning hole; 15, receiving cavity.
Embodiment
Embodiment 1:
In conjunction with Fig. 1, Fig. 2, the utility model automobile brake clearance manual adjusting arm comprises adjusts arm housing 1, worm gear 6, worm screw 5, adjusting bolt 13.Worm gear 6 is located at worm screw 5 with being meshing with each other and is adjusted in the arm housing 1, and adjusting bolt 13 is arranged in adjustment arm housing 1 and adjustment arm housing 1 outside is stretched out in the outer end, and described worm screw 5 circumferentially is socketed in regularly to be regulated on the bolt 13.In order to prevent that the position takes place axially to scurry to regulate bolt 13 in adjusting arm housing 1, on the inner outer side surface of regulating bolt 13, be provided with the restraining groove 4 of a ring-type, can pass spacing hole 3 and be inserted into gap in the restraining groove 4 adjusting on the arm housing 1 the inner that corresponding position, position with this restraining groove 4 is provided with a spacing hole 3, one position limit pins.
Also be provided with several connecting hole 2 on adjustment arm housing 1, braking pedal can be connected in these connecting hole 2 by linkage mechanism.When this adjustment arm was assemblied in the braking automobile mechanism, described worm gear 6 was socketed on the brake camshaft with maintaining a fixed.
Utilize frictional force to prevent to regulate the limit stoper that bolt 13 rotates relative to adjustment arm housing 1 with adjusting also to be provided with between the arm housing 1 regulating bolt 13.This limit stoper comprises is located at the convex shoulder 9 of regulating bolt 13 outer end portion, is located at ball 8 and the spring 7 adjusted in the arm housing 1.On the inner side surface of convex shoulder 9, be provided with the arc-shaped notch 12 of plurality of continuous, above-mentioned ball 8 at roof pressure under the effect of spring 7 in recess 12.Be provided with a positioning hole 14 in adjusting arm housing 1, described spring 7, ball 8 are located in the positioning hole 14 successively, and an end of spring 7 acts on the described positioning hole 14, and the other end acts on the ball 8.
Above-mentioned convex shoulder 9 is to be connected as a single entity with adjusting bolt 13.Be provided with a receiving cavity 15 in the corresponding position, position of adjusting arm housing 1 and described convex shoulder 9, the height of convex shoulder 9 equates substantially that with the degree of depth of receiving cavity 15 convex shoulder 9 is arranged in receiving cavity 15.On the outer circumferential face of convex shoulder 9, also be provided with the groove 10 of a ring-type, in the groove 10 of this ring-type, be socketed with a seal ring 11, the outer circumferential face of seal ring 11 outstanding convex shoulders 9.
Embodiment 2:
Embodiment 3:
Claims (8)
1, a kind of automobile brake clearance manual adjusting arm, comprise and adjust arm housing (1), be located at intermeshing worm gear (6) and the worm screw (5) adjusted in the arm housing (1), in above-mentioned adjustment arm housing (1), also be provided with and regulate bolt (13), adjusting bolt (13) passes worm screw (5) and its outer end portion is stretched out adjustment arm housing (1), worm screw (5) circumferentially is fixed in and regulates on the bolt (13), it is characterized in that, be provided with one between adjusting bolt (13) and the adjustment arm housing (1) and rely on surface friction drag to prevent to regulate bolt (13) with respect to adjusting the positioning device that arm housing (1) rotates.
2, automobile brake clearance manual adjusting arm according to claim 1, it is characterized in that, described positioning device comprises the convex shoulder (9) of regulating bolt (13) outer end, evenly have the recess (12) of several arcs at the inner side surface of convex shoulder (9), in housing, have a positioning hole (14), be provided with spring (7) and ball (8) in the positioning hole (14), and at ball (8) roof pressure under the effect of spring (7) on above-mentioned recess (12).
3, automobile brake clearance manual adjusting arm according to claim 1, it is characterized in that, described positioning device comprises the convex shoulder (9) of regulating bolt (13) outer end, inner side surface at convex shoulder (9) is corrugated, in housing, have a positioning hole (14), be provided with spring (7) and ball (8) in the positioning hole (14), and at ball (8) roof pressure under the effect of spring (7) on the inner side surface of above-mentioned convex shoulder (9).
4, according to claim 1 or 2 or 3 described automobile brake clearance manual adjusting arms, it is characterized in that, between the outer end of regulating bolt (13) and adjustment arm housing (1), be provided with seal ring (11).
According to claim 1 or 2 or 3 described automobile brake clearance manual adjusting arms, it is characterized in that 5, be provided with receiving cavity (15) on adjustment arm housing (1), described convex shoulder (9) is arranged in this receiving cavity (15).
6, automobile brake clearance manual adjusting arm according to claim 4 is characterized in that, is provided with receiving cavity (15) on adjustment arm housing (1), and described convex shoulder (9) is arranged in this receiving cavity (15).
7, automobile brake clearance manual adjusting arm according to claim 6 is characterized in that, described seal ring (11) is arranged between described convex shoulder (9) and the receiving cavity (15).
According to claim 6 or 7 described automobile brake clearance manual adjusting arms, it is characterized in that 8, described convex shoulder (9) is provided with the groove (10) of a ring-type, described seal ring (11) is socketed in this groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620046881 CN200989403Y (en) | 2006-10-17 | 2006-10-17 | Vehicle brake gap hand regulating arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620046881 CN200989403Y (en) | 2006-10-17 | 2006-10-17 | Vehicle brake gap hand regulating arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989403Y true CN200989403Y (en) | 2007-12-12 |
Family
ID=38940440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620046881 Expired - Lifetime CN200989403Y (en) | 2006-10-17 | 2006-10-17 | Vehicle brake gap hand regulating arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989403Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1959142B (en) * | 2006-10-17 | 2010-05-26 | 浙江天元机电有限公司 | Hand adjustment arm for arresting gap in automobile |
| CN109854576A (en) * | 2017-11-30 | 2019-06-07 | 上汽通用汽车有限公司 | A kind of bolt assembly |
-
2006
- 2006-10-17 CN CN 200620046881 patent/CN200989403Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1959142B (en) * | 2006-10-17 | 2010-05-26 | 浙江天元机电有限公司 | Hand adjustment arm for arresting gap in automobile |
| CN109854576A (en) * | 2017-11-30 | 2019-06-07 | 上汽通用汽车有限公司 | A kind of bolt assembly |
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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: 20071212 |
|
| EXPY | Termination of patent right or utility model |