Portable adjusting arm for automobile brake
By introducing structures such as telescopic rods, telescopic springs, and rotating discs into the adjusting arm for automotive brakes, the problem of excessive worm gear rotation angle is solved, enabling convenient angle adjustment and positioning, and improving the practicality of the adjusting arm.
Patent Information
- Application Number
- CN202423121083.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing automotive brake adjusting arms are prone to excessive rotation angles when the worm gear rotates, and are difficult to position, reducing their practicality.
A portable adjusting arm for automotive brakes was designed. By incorporating a telescopic rod, a telescopic spring, a hemispherical locking block, and a rotating disc, the arm enables automatic limiting and angle adjustment of the worm gear. The worm gear and worm wheel work together, and the arm is secured with fastening bolts to prevent excessive angle.
It achieves automatic limit stop when rotating half a turn to prevent excessive adjustment angle and improves the ease of use and accuracy of the adjusting arm.
Smart Images
Figure CN223483243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adjusting arm technology, specifically a portable adjusting arm for automobile brakes. Background Technology
[0002] The automatic brake clearance adjustment arm, commonly known as the automatic brake clearance adjustment arm or simply the automatic adjustment arm, can automatically and promptly adjust the clearance that has increased due to wear, so that the brake clearance is always kept within the design range. However, it does not adjust the adjustment arm angle travel that occurs due to the elastic deformation of the force transmission parts after the brake shoe contacts the brake drum.
[0003] Adjusting arms are an important component of automotive braking systems. However, existing adjusting arms are prone to excessive rotation angles when the worm gear rotates, resulting in large adjustment angles. Furthermore, they are not convenient for positioning the adjustment structure, reducing the practicality of the adjusting arms and making them inconvenient for users.
[0004] Therefore, a portable adjusting arm for automobile brakes is proposed to address the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a portable adjusting arm for automobile brakes, including an adjusting arm body. The adjusting arm body has a worm gear cavity, and a worm cavity is formed on one side of the worm gear cavity. A worm gear is disposed inside the worm gear cavity, and a worm is disposed inside the worm cavity. Grooves are formed on both sides below the worm, and a telescopic rod is disposed inside the groove. A telescopic spring is wound around the telescopic rod, and the telescopic rod is connected to a hemispherical locking block. The hemispherical locking block is engaged in a hemispherical locking groove formed on the inner side of the adjusting arm body. An elastic pad disposed above the adjusting arm body passes through the worm and extends to the top of the elastic pad and connects to a rotating disk. The two sides of the rotating disk are fixed to the elastic pad by two fastening bolts.
[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0007] This utility model incorporates a telescopic rod, a telescopic spring, a hemispherical locking block, and a hemispherical groove. The extension of the telescopic rod causes the telescopic spring to extend, which in turn causes the hemispherical locking block to engage with the hemispherical groove. This facilitates automatic limiting during half-turn rotation, preventing excessive adjustment angles.
[0008] This utility model features a rotating disk, two fastening bolts, bolt holes, and bolt grooves. By inserting the two fastening bolts through the bolt holes into the bolt grooves, the rotating disk can be limited, thereby fixing the worm gear. By unscrewing the two fastening bolts and rotating the rotating disk, the rotating disk drives the worm gear to rotate, which in turn drives the worm wheel to rotate, facilitating angle adjustment. Attached Figure Description
[0009] Figure 1 is a structural schematic diagram of this utility model;
[0010] Figure 2 is Figure 1 Enlarged view of point A in the middle;
[0011] Figure 3 is Figure 1 Enlarged view of section B in the middle.
[0012] The reference numerals and names in the figure are as follows:
[0013] 1. Adjusting arm body; 101. Worm gear cavity; 102. Worm shaft cavity; 103. Hemispherical slot; 2. Worm gear; 3. Worm shaft; 301. Groove; 4. Fixing sleeve; 5. Elastic washer; 501. Bolt groove; 6. Fastening bolt one; 7. Rotating disc; 701. Bolt hole; 8. Fastening bolt two; 9. Telescopic rod; 10. Telescopic spring; 11. Hemispherical block. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] As attached Figure 1-3 As shown, this utility model provides a portable adjusting arm for automobile brakes, including an adjusting arm body 1. The adjusting arm body 1 has a worm gear cavity 101, and a worm shaft cavity 102 is formed on one side of the worm gear cavity 101. A worm gear 2 is disposed inside the worm gear cavity 101, and a worm shaft 3 is disposed inside the worm shaft cavity 102. Grooves 301 are respectively formed on both sides below the worm shaft 3. A telescopic rod 9 is disposed inside the groove 301. A telescopic spring 10 is wound around the telescopic rod 9. The telescopic rod 9 is connected to a hemispherical locking block 11. The hemispherical locking block 11 is engaged in a hemispherical locking groove 103 formed on the inner side of the adjusting arm body 1. An elastic pad 5 is disposed above the adjusting arm body 1 through the worm shaft 3 and extends to the top of the elastic pad 5 and is connected to a rotating disk 7. The rotating disk 7 is fixed to the elastic pad 5 on both sides by fastening bolts 8.
[0016] Specifically, the worm gear 2 is engaged with the worm 3.
[0017] Specifically, the front end of the adjusting arm body 1 has two fixing sleeves 4.
[0018] Specifically, the side of the upper part of the adjusting arm body 1 away from the rotating disk 7 is fixed to the adjusting arm body 1 by fastening bolt 6.
[0019] Specifically, the rotating disk 7 has multiple bolt holes 701 along its circumference. Two fastening bolts 8 pass through the two bolt holes 701 on the left and right sides respectively, and extend to the bottom of the bolt holes 701 and are screwed into the bolt grooves 501 on the elastic washer 5.
[0020] Working principle: When adjustment is required, remove the second fastening bolt 8, rotate the rotating disk 7, the rotating disk 7 drives the worm 3 to rotate, the worm 3 drives the worm wheel 2 to rotate. Every half turn, the telescopic rod 9 extends, which drives the telescopic spring 10 to extend. In turn, the extension of the telescopic rod 9 drives the hemispherical locking block 11 to engage in the hemispherical groove 103, which facilitates automatic limiting when rotating half a turn to prevent the adjustment angle from being too large. After adjusting to the specified angle, screw the second fastening bolt 8 through the bolt hole 701 into the bolt groove 501 to facilitate positioning of the worm 3.
[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A portable adjusting arm for automobile brakes, comprising an adjusting arm body (1), characterized in that: The adjusting arm body (1) has a worm gear cavity (101) and a worm cavity (102) on one side of the worm gear cavity (101). A worm gear (2) is provided inside the worm gear cavity (101) and a worm (3) is provided inside the worm cavity (102). Grooves (301) are provided on both sides below the worm (3). A telescopic rod (9) is provided inside the groove (301). A telescopic spring (10) is wound around the telescopic rod (9). The telescopic rod (9) is connected to a hemispherical locking block (11). The hemispherical locking block (11) is inserted into a hemispherical slot (103) on the inner side of the adjusting arm body (1). The worm (3) passes through an elastic pad (5) provided above the adjusting arm body (1) and extends to the top of the elastic pad (5) to connect with a rotating disk (7). The two sides of the rotating disk (7) are fixed to the elastic pad (5) by fastening bolts (8).
2. The portable adjusting arm for automobile brakes according to claim 1, characterized in that: The worm gear (2) is engaged with the worm (3).
3. The portable adjusting arm for automobile brakes according to claim 1, characterized in that: The front end of the adjusting arm body (1) has two fixing sleeves (4).
4. A portable adjusting arm for automobile brakes according to claim 1, characterized in that: The side of the upper part of the adjusting arm body (1) away from the rotating disk (7) is fixed to the adjusting arm body (1) by fastening bolt (6).
5. A portable adjusting arm for automobile brakes according to claim 1, characterized in that: The rotating disk (7) has multiple bolt holes (701) along its circumference. Two fastening bolts (8) pass through the two bolt holes (701) on the left and right sides respectively, and extend to the bolt groove (501) on the elastic washer (5) below the bolt hole (701).