CN202280771U - Linear locking brake adjusting arm - Google Patents
Linear locking brake adjusting arm Download PDFInfo
- Publication number
- CN202280771U CN202280771U CN2011204336032U CN201120433603U CN202280771U CN 202280771 U CN202280771 U CN 202280771U CN 2011204336032 U CN2011204336032 U CN 2011204336032U CN 201120433603 U CN201120433603 U CN 201120433603U CN 202280771 U CN202280771 U CN 202280771U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- worm shaft
- worm
- brake
- hole
- 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 discloses a linear locking brake adjusting arm comprising a worm shaft cooperated with an adjusting installation hole in the brake adjusting arm body, a worm gear and a worm. A groove hole connected with the worm shaft is disposed in the worm along a central axis. A tooth ring is disposed along an inner wall periphery of an adjusting installation hole. A steel ball is disposed between the tooth ring and the groove hole in the worm shaft corresponding to the tooth ring. One end of a nut of the worm shaft is provided with a central shaft hole, in which are sequentially disposed, from inside to outside, a spring, an ejector pin, and an adjusting screw. The adjusting screw and the central shaft hole are in a threaded connection, and the ejector pin is contacted with the steel ball. In the utility model, the interference fit or the clearance fit between the steel ball and the tooth ring can be controlled by the contact between the ejector pin and the steel ball, thereby the service lifetime of the brake adjusting arm can be prolonged, and the reliability of the locking performance of the brake can be improved.
Description
Technical field
The utility model relates to a kind of automobile brake system parts, relates in particular to a kind of brake adjustment arm.
Background technique
The effect of the arm of brake adjustment at present is that the break brake clearance is adjusted, and is meant the adjustment that the gap between friction pairs of brake element brake drum and the brake lining is carried out.Automobile in use, frequent braking can cause the continuous wearing and tearing of braking member, causes the gap increase in various degree between brake drum and the shoe plate, causes pedal travel lengthening, the decline of brake chamber thrust, braking retardation and braking force reduction etc.For guaranteeing vehicle driving safety, keep the equilibrium of working between the relatively stable of pedal travel and each break, need brake clearance is adjusted, play the function of adjusting and control brake function and sensitivity.Existing its adjustment process of brake adjustment arm is mainly adjusted the adjustment function of steel ball and the mutual interference of gear ring or the Spielpassung realization brake adjustment arm of arm through brake; The interference of steel ball and gear ring or Spielpassung be by center steel ball control, and center steel ball, steel ball, gear ring are interference fit that a contact causes steel ball and gear ring along with long-time use center steel ball, steel ball, gear ring all can wear and tear and lost efficacy and cause brake adjustment arm to lose the adjusted locking function influence driving safety of braking in this process.The center steel ball drives the spring force of the driving force of steel ball and gear ring interference or Spielpassung from steel ball bottom, center aspect control, often loses efficacy because elastic force causes steel ball and gear ring interference fit inadequately.
China utility model patent patent No. ZL200520101714.8 discloses a kind of structure improvement of self locking type brake adjustment arm.Comprise housing; Be located at worm gear, worm mechanism in it; On housing, be provided with the adjustment axis hole, the adjustment axis hole is matched with worm screw through the adjustment axle, it is characterized in that on described adjustment axle, evenly being furnished with some shrinkage pools; Its periphery is provided with the gear ring that is coupled on the housing, is provided with a steel ball that adapts with shrinkage pool in the described gear ring at least; The root of said adjustment axle is provided with circular groove, and described housing is provided with the guide wheel hole, and said guide wheel is provided with the guide wheel that matches with circular groove in the hole.This kind device is not considered the locking problem after the wearing and tearing such as steel ball, gear ring, the yet not technical clarification of this aspect.
Summary of the invention
The brake adjustment arm that the utility model provides a kind of linearity simple in structure, easy to adjust, long service life to lock.
A kind of brake adjustment arm of linear locking comprises with brake and adjusts the worm shaft that the adjustment mounting hole cooperates on the arm body, and worm gear that cooperatively interacts and worm screw; Worm screw is provided with slotted eye along central axis and connects worm shaft, and the adjustment mounting hole is provided with gear ring along the inwall circumference, is provided with steel ball between the corresponding shrinkage pool on gear ring and the worm shaft; Described worm shaft one end is provided with nut; The other end is provided with annular groove, and nut one end of worm shaft is provided with central shaft hole, is provided with spring, push rod, adjusting screw rod in the central shaft hole from inside to outside successively; Adjusting screw rod is threaded with central shaft hole, push rod contact steel ball.The utility model adopts push rod contact steel ball; Interference fit or Spielpassung by push rod control steel ball and gear ring; Because push rod is that the steel ball summit contacts with the push rod outer wall is linear with the contact process of steel ball; As long as the not serious wearing and tearing of push rod outer diameter just can realize steel ball and gear ring interference fit; Increase the service life, changed the defective of the some touch controls of traditional steel ball and center steel ball, and avoid should be damaged jack-up center steel ball steel ball and the gear ring interference fit Problem of Failure of causing not in place that cause of spring force.
Shrinkage pool on the described worm shaft is a through hole, and its two ends are equipped with steel ball and cooperate gear ring respectively, is that two steel balls cooperate with gear ring respectively, strengthens the control ability of brake adjustment arm.
When described push rod outer circumferential walls cooperated with steel ball, steel ball ejected and the gear ring interference fit.
The mounting hole that the nut top of described worm shaft is provided with indent cooperates the installation dust washer, prevents that dust from getting into worm shaft internal influence steel ball and gear ring fiting effect, reduces the wearing and tearing of steel ball.
The annular groove of the described worm shaft latch that is connected, latch insert on the brake adjustment arm body in the hinge last and the annular groove that passes worm shaft reaches matching relationship, realize preventing the purpose of worm shaft axial motion.
The utility model is through the interference fit or the Spielpassung of push rod contact steel ball control steel ball and gear ring; Realize that the push rod and the contact process of steel ball are that the steel ball summit contacts with the push rod outer wall is linear; As long as the not serious wearing and tearing of push rod outer diameter just can realize steel ball and gear ring interference fit; Prolong brake adjustment arm working life, improve the reliability of brake adjustment locking.
Description of drawings
Fig. 1 is the brake adjustment arm broken section structural representation of the linear locking of the utility model.
Embodiment
The brake adjustment arm of a kind of linear locking as shown in Figure 1 comprises with brake and adjusts the worm shaft 7 that the adjustment mounting hole cooperates on the arm body 1, and the worm gear 2 and worm screw 8 that cooperatively interact; Worm screw 8 is provided with slotted eye along central axis and connects worm shaft 7, and the adjustment mounting hole is provided with gear ring along the inwall circumference, is provided with steel ball 3 between the corresponding shrinkage pool on gear ring and the worm shaft 7; Worm shaft 7 one ends are provided with nut; The other end is provided with annular groove, and nut one end of worm shaft 7 is provided with central shaft hole, is provided with spring 6, push rod 5, adjusting screw rod 4 in the central shaft hole from inside to outside successively; Adjusting screw rod 4 is threaded with central shaft hole, push rod 5 contact steel balls 3.The annular groove of worm shaft 7 latch 9 that is connected.
As the shrinkage pool on the structure optimization worm shaft 7 is through hole, and its two ends are equipped with steel ball 3 and cooperate gear ring respectively.When push rod 5 outer circumferential walls cooperated with steel ball 3, steel ball 3 ejected and the gear ring interference fit.The mounting hole that the nut top of worm shaft 7 is provided with indent cooperates the installation dust washer.
The concrete workflow of the utility model is following: when brake adjustment arm installs when needing locking brake adjustment arm; Adjusting screw rod 4 rotates up; Spring 6 promotes to move on the push rod 5 the diameter outer circumferential walls contact steel ball 3 that makes push rod 5; Make steel ball 3 and gear ring interference fit, worm shaft 7 can't rotate certainly just worm gear 2 and can't rotate with worm screw 8 and reach the locking purpose.When needs releasing of brake adjustment arm; Adjusting screw rod 4 is rotated down; Promotion push rod 5 moves down the diameter outer circumferential walls that makes push rod 5 and can not contact steel ball 3; Make steel ball 3 and gear ring Spielpassung, worm shaft 7 can rotate just worm gear 2 and can rotate to reach with worm screw 8 and unclamp purpose, also just can regulate brake system certainly.
Claims (5)
1. arm is adjusted in the brake of a linear locking; Comprise with brake adjustment arm body (1) and go up the worm shaft (7) that the adjustment mounting hole cooperates, and worm gear that cooperatively interacts (2) and worm screw (8), worm screw (8) is provided with slotted eye along central axis and connects worm shaft (7); The adjustment mounting hole is provided with gear ring along the inwall circumference; Gear ring is gone up between the corresponding shrinkage pool with worm shaft (7) and is provided with steel ball (3), and it is characterized in that: described worm shaft (7) one ends are provided with nut, and the other end is provided with annular groove; Nut one end of worm shaft (7) is provided with central shaft hole; Be provided with spring (6), push rod (5), adjusting screw rod (4) in the central shaft hole from inside to outside successively, adjusting screw rod (4) is threaded with central shaft hole, push rod (5) contact steel ball (3).
2. the brake adjustment arm of linear locking as claimed in claim 1, it is characterized in that: the shrinkage pool on the described worm shaft (7) is a through hole, its two ends are equipped with steel ball (3) and cooperate gear ring respectively.
3. the brake adjustment arm of linear locking as claimed in claim 1 is characterized in that: described push rod (5) outer circumferential walls and steel ball (3) are when cooperating, and steel ball (3) ejects and the gear ring interference fit.
4. the brake adjustment arm of linear locking as claimed in claim 1 is characterized in that: the mounting hole that the nut top of described worm shaft (7) is provided with indent cooperates the installation dust washer.
5. the brake adjustment arm of linear locking as claimed in claim 1 is characterized in that: the annular groove of described worm shaft (7) latch (9) that is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204336032U CN202280771U (en) | 2011-10-28 | 2011-10-28 | Linear locking brake adjusting arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204336032U CN202280771U (en) | 2011-10-28 | 2011-10-28 | Linear locking brake adjusting arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280771U true CN202280771U (en) | 2012-06-20 |
Family
ID=46226940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204336032U Expired - Fee Related CN202280771U (en) | 2011-10-28 | 2011-10-28 | Linear locking brake adjusting arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108942523A (en) * | 2018-07-18 | 2018-12-07 | 武汉理工大学 | A kind of double drive grinding device of the machine-building with dust automatic collection function |
-
2011
- 2011-10-28 CN CN2011204336032U patent/CN202280771U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108942523A (en) * | 2018-07-18 | 2018-12-07 | 武汉理工大学 | A kind of double drive grinding device of the machine-building with dust automatic collection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model |