Helical gear and worm self-adjusting type automatic adjusting arm for automobile brake clearance

Abstract

The utility model relates to the technical field of automobile brakes, in particular to a helical gear and worm self-adjusting type automobile brake clearance automatic adjusting arm which comprises a shell, a helical gear body and a worm body meshed with the helical gear body are installed in the shell, the shell comprises a connecting arm, a worm shell is installed on the connecting arm, and the worm shell is connected with the helical gear body. The worm shell is used for installing a worm body, one side of the worm shell is provided with a bevel gear shell in a communicating mode, and the bevel gear shell is used for installing a bevel gear body. A clockwork spring elastically installed with the worm body is installed in the worm shell, and the clockwork spring is used for limiting the worm body. The utility model has the advantage of automatically resetting the brake clearance, and solves the problem that the brake clearance is difficult to reset when the brake is frequent.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake technology, specifically to a helical gear worm gear self-adjusting automatic adjustment arm for automotive brake clearance. Background Technology

[0002] The helical gear and worm gear self-adjusting automatic brake clearance adjusting arm, as a key component of the automotive braking system, primarily functions to automatically adjust the clearance between the brake shoes and the brake drum or brake disc. Through the cooperation of helical gears and a worm gear, this device can dynamically and precisely adjust the brake clearance according to the actual conditions during braking, thereby ensuring that the vehicle maintains stable and efficient braking performance at all times, greatly improving driving safety.

[0003] However, existing helical gear worm gear self-adjusting automatic brake clearance adjusting arms for automobiles have revealed significant shortcomings in practical use. When braking is frequent during vehicle operation, the worm gear is prone to loosening due to the frequent application of large forces. Once the worm gear loosens, the precise adjustment mechanism of the entire automatic adjusting arm is severely affected, making it difficult to restore the brake clearance to its initial optimal state. This leads to decreased braking performance and, in severe cases, may even cause brake failure and other safety hazards. Therefore, there is an urgent need to propose a newly designed helical gear worm gear self-adjusting automatic brake clearance adjusting arm for automobiles to effectively solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a helical gear worm gear self-adjusting automatic brake clearance adjustment arm for automobiles, which has the advantage of automatically resetting the brake clearance and solves the problem of difficulty in resetting the brake clearance when braking is frequent.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a helical gear worm gear self-adjusting automatic adjustment arm for automotive brake clearance, comprising a housing, wherein a helical gear body and a worm gear body meshing with the helical gear body are installed inside the housing, the housing includes a connecting arm, a worm gear housing is installed on the connecting arm, the worm gear housing is used to install the worm gear body, and a helical gear housing is connected to one side of the worm gear housing, the helical gear housing is used to install the helical gear body;

[0006] A spring-loaded spring is installed inside the worm housing and is elastically mounted to the worm body. The spring-loaded spring is used to limit the movement of the worm body.

[0007] Preferably, the connecting arm has a reserved hole, and an installation ring is provided in the reserved hole.

[0008] In the design, a mounting ring is installed in the reserved hole on the connecting arm, which enables a more convenient and stable installation method and helps to reliably connect the automatic adjustment arm to the relevant automotive components.

[0009] Preferably, a first mounting groove is provided at both ends of the worm housing, a second mounting groove is provided at one end of the worm housing, and a protective cover is installed at one end of the worm housing by mounting screws.

[0010] In the design, the first mounting groove at both ends and the second mounting groove at one end of the worm housing, together with the protective cover installed at one end by mounting screws, achieve a reasonable installation layout and effective protection for the worm body and other components, thereby improving the stability and safety of the internal structure of the device.

[0011] Preferably, both ends of the worm gear body are provided with limit bearings, and the two limit bearings are respectively embedded in the two first mounting slots.

[0012] In the design, the limit bearings at both ends of the worm gear body are embedded in the two first mounting slots, which realizes precise limiting and smooth support for the rotation of the worm gear body, ensuring the stability and reliability of the worm gear during operation.

[0013] Preferably, the helical gear housing is provided with a mounting cover for mounting the helical gear body;

[0014] The mounting cover includes an upper cover and a lower cover, which are fixedly connected by mounting screws, and the upper cover and the lower cover are matched in size.

[0015] In the design, the helical gear housing is provided with a mounting cover for installing the helical gear body. The mounting cover includes an upper cover and a lower cover that are fixedly connected by mounting screws, which realizes the convenience and stability of the installation of the helical gear body and facilitates the installation, disassembly and maintenance of the helical gear.

[0016] Preferably, both the upper and lower covers are provided with connecting tooth grooves that match the hub holes of the helical gear body, and both the upper and lower covers are provided with mounting tooth grooves that mesh with the outer edge of the helical gear body. The upper and lower covers mesh with the helical gear body through the mounting tooth grooves.

[0017] In the design, the upper and lower covers are equipped with connecting tooth grooves that match the hub holes of the helical gear body, as well as mounting tooth grooves that mesh with the outer edge of the helical gear body. This achieves a tight and precise connection between the mounting cover and the helical gear body, ensuring the stability and transmission efficiency of the helical gear during operation.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention incorporates a spring that is elastically mounted to the worm gear body within the worm gear housing. When frequent braking causes the worm gear body to loosen due to stress, the spring, with its elastic force, can promptly restore the worm gear body to its initial position.

[0020] The accurate repositioning of the worm gear body allows the helical gear body that meshes with it to operate normally, thereby realizing the function of automatically adjusting the brake clearance and effectively solving the problem of brake clearance being difficult to reposition when braking is frequent. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the outer shell structure of this utility model;

[0023] Figure 3 This is an exploded view of the connection structure between the mounting cover and the helical gear body of this utility model;

[0024] Figure 4 This is a schematic diagram of the worm gear body connection structure of this utility model.

[0025] In the diagram: 1. Mounting ring; 2. Housing; 21. Connecting arm; 211. Reserved hole; 22. Worm gear housing; 221. First mounting groove; 222. Second mounting groove; 23. Helical gear housing; 3. Mounting cover; 31. Upper cover; 32. Mounting screw; 33. Connecting tooth groove; 34. Lower cover; 35. Mounting tooth groove; 4. Protective cover; 41. Mounting screw; 5. Helical gear body; 6. Worm gear body; 61. Limit bearing; 62. Clock spring. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one embodiment of this utility model is provided: a helical gear worm gear self-adjusting automatic adjustment arm for automotive brake clearance, including a housing 2, a helical gear body 5 and a worm gear body 6 meshing with the helical gear body 5 are installed inside the housing 2, the housing 2 includes a connecting arm 21, a worm gear shell 22 is installed on the connecting arm 21, the worm gear shell 22 is used to install the worm gear body 6, and a helical gear shell 23 is connected and installed on one side of the worm gear shell 22, the helical gear shell 23 is used to install the helical gear body 5;

[0029] A spring 62 is installed inside the worm housing 22 and is elastically mounted to the worm body 6. The spring 62 is used to limit the movement of the worm body 6.

[0030] Specifically, by setting a spring 62 elastically mounted to the worm body 6 inside the worm housing 22, when frequent braking causes the worm body 6 to loosen under force, the spring 62 can promptly reset the worm body 6 to its initial position by virtue of its elastic force.

[0031] The accurate reset of the worm gear body 6 enables the helical gear body 5 to operate normally, thereby realizing the function of automatically adjusting the brake clearance and effectively solving the problem of brake clearance being difficult to reset when braking is frequent.

[0032] Example 2

[0033] To achieve a more convenient and stable installation, such as Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a reserved hole 211 is provided on the connecting arm 21, and an installation ring 1 is provided in the reserved hole 211.

[0034] Specifically, an installation ring 1 is installed inside the reserved hole 211 on the connecting arm 21, which enables a more convenient and stable installation method and helps to reliably connect the automatic adjustment arm to the relevant automotive components.

[0035] Furthermore, a first mounting groove 221 is provided at both ends of the worm housing 22, a second mounting groove 222 is provided at one end of the worm housing 22, and a protective cover 4 is installed at one end of the worm housing 22 by mounting screws 41.

[0036] Specifically, the first mounting groove 221 at both ends and the second mounting groove 222 at one end of the worm housing 22, together with the protective cover 4 installed at one end by mounting screw 41, achieve a reasonable installation layout and effective protection for components such as the worm body 6, thereby improving the stability and safety of the internal structure of the device.

[0037] Furthermore, both ends of the worm gear body 6 are provided with limit bearings 61, and the two limit bearings 61 are respectively embedded in the two first mounting slots 221.

[0038] Specifically, the limiting bearings 61 set at both ends of the worm body 6 are respectively embedded in the two first mounting slots 221, realizing precise limiting and smooth support for the rotation of the worm body 6, and ensuring the stability and reliability of the worm during operation.

[0039] Example 3

[0040] To achieve convenient and stable installation of the helical gear body, and to facilitate the installation, disassembly, and maintenance of the helical gear, such as... Figure 2 and Figure 3 As shown, in this embodiment, the helical gear housing 23 is provided with a mounting cover 3 for mounting the helical gear body 5;

[0041] The mounting cover 3 includes an upper cover 31 and a lower cover 34, which are fixedly connected by mounting screws 32, and the upper cover 31 and the lower cover 34 are matched in size.

[0042] Specifically, the helical gear housing 23 is provided with a mounting cover 3 for mounting the helical gear body 5. The mounting cover 3 includes an upper cover 31 and a lower cover 34 fixedly connected by a mounting screw 32, which realizes the convenience and stability of mounting the helical gear body 5 and facilitates the installation, disassembly and maintenance of the helical gear.

[0043] Furthermore, both the upper cover 31 and the lower cover 34 are provided with connecting tooth grooves 33 that match the hub holes of the helical gear body 5, and both the upper cover 31 and the lower cover 34 are provided with mounting tooth grooves 35 that mesh with the outer edge of the helical gear body 5. The upper cover 31 and the lower cover 34 mesh with the helical gear body 5 through the mounting tooth grooves 35.

[0044] Specifically, the upper cover 31 and the lower cover 34 are provided with connecting tooth grooves 33 that match the hub holes of the helical gear body 5, and mounting tooth grooves 35 that mesh with the outer edge of the helical gear body 5, which realizes a tight and precise connection between the mounting cover 3 and the helical gear body 5, ensuring the stability and transmission efficiency of the helical gear during operation.

[0045] When using this utility model, confirm that the limiting bearings 61 at both ends of the worm body 6 are correctly embedded in the first mounting groove 221 of the worm housing 22, and that the spring 62 is elastically installed in place with the worm body 6, providing normal limiting force; at the same time, check that the helical gear body 5 is tightly engaged with the mounting cover 3 through the connecting tooth groove 33 and mounting tooth groove 35 of the upper cover 31 and the lower cover 34, and then use the mounting screw 32 to fix the upper cover 31 and the lower cover 34 on the helical gear housing 23 to ensure that the helical gear body 5 is installed securely.

[0046] Using the pre-drilled holes 211 on the connecting arm 21 and the mounting ring 1, bolts or other suitable connectors are used to securely install the automatic adjusting arm onto the designated parts of the vehicle, ensuring a firm connection and preventing loosening.

[0047] When the car brakes, the change in the gap between the brake pads and the brake drum or brake disc is transmitted to the automatic adjusting arm, which drives the helical gear body 5 to rotate.

[0048] The helical gear body 5 meshes with the worm gear body 6, transmitting rotation to the worm gear body 6, causing it to rotate accordingly.

[0049] During rotation, if the braking clearance becomes abnormal due to factors such as frequent braking, the worm body 6 may be displaced under force. However, the spring 62 inside the worm housing 22 will apply a reverse force to the worm body 6 in time by means of elastic force, so that it is reset to a reasonable position, thereby driving the helical gear body 5 to adjust, and finally restoring the braking clearance to the initial reasonable state, ensuring stable braking performance.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-adjusting automatic brake clearance adjusting arm for automobiles using a helical gear and worm gear, comprising a housing (2), wherein a helical gear body (5) and a worm gear body (6) meshing with the helical gear body (5) are installed inside the housing (2), characterized in that: The outer casing (2) includes a connecting arm (21), on which a worm housing (22) is mounted. The worm housing (22) is used to mount the worm body (6). A helical gear housing (23) is connected to one side of the worm housing (22), and the helical gear housing (23) is used to mount the helical gear body (5). The worm housing (22) is equipped with a spring (62) that is elastically mounted to the worm body (6), and the spring (62) is used to limit the worm body (6).

2. The self-adjusting automotive brake clearance automatic adjusting arm with helical gear and worm gear as described in claim 1, characterized in that, The connecting arm (21) has a reserved hole (211) and an installation ring (1) is provided in the reserved hole (211).

3. The self-adjusting automotive brake clearance automatic adjusting arm of helical gear and worm gear according to claim 1, characterized in that, The worm housing (22) has a first mounting groove (221) at both ends inside, a second mounting groove (222) at one end inside, and a protective cover (4) at one end of the worm housing (22) is installed by mounting screws (41).

4. The self-adjusting automotive brake clearance automatic adjusting arm of helical gear and worm gear according to claim 1, characterized in that, Both ends of the worm gear body (6) are provided with limit bearings (61), and the two limit bearings (61) are respectively embedded in the two first mounting slots (221).

5. The self-adjusting automotive brake clearance automatic adjusting arm of helical gear and worm gear according to claim 1, characterized in that, The helical gear housing (23) is provided with a mounting cover (3) for mounting the helical gear body (5); The mounting cover (3) includes an upper cover (31) and a lower cover (34), which are fixedly connected by mounting screws (32), and the upper cover (31) and the lower cover (34) are matched in size.

6. The self-adjusting automotive brake clearance automatic adjusting arm of helical gear and worm gear according to claim 5, characterized in that, Both the upper cover (31) and the lower cover (34) are provided with connecting tooth grooves (33) that match the hub holes of the helical gear body (5). Both the upper cover (31) and the lower cover (34) are provided with mounting tooth grooves (35) that mesh with the outer edge of the helical gear body (5). The upper cover (31) and the lower cover (34) mesh with the helical gear body (5) through the mounting tooth grooves (35).

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