Piston assembly of automobile brake calipers

Abstract

The utility model discloses a piston assembly of automobile brake calipers, which relates to the technical field of automobile accessories and comprises a piston main body, a mounting block and a threaded rod are arranged on the piston main body through a mounting sleeve, a worm gear is arranged on the threaded rod through key connection, a worm is further rotatably arranged on the mounting block, and the worm is meshed with the worm gear. A clamping block is arranged on the spring first sliding block in the empty groove, a clamping groove used in cooperation with the clamping block is formed in the installation sleeve, a supporting rod is arranged on the first sliding block, and the supporting rod penetrates through the piston body and is in sliding connection with the piston body. Under the action of the worm and the worm gear, the length of the mounting rod mechanism is flexibly adjusted, the piston assembly can adapt to brake pads of different sizes or types, the adaptability and flexibility of a brake system are improved, and meanwhile, the self-locking function of the worm gear and the worm also ensures that the adjusted length is stable and reliable and is not easy to loosen or change.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, and specifically relates to a piston assembly of automobile brake caliper. BACKGROUND

[0002] In the automobile brake system, the brake caliper is one of the key components, which is responsible for converting the pressure of brake fluid into clamping force on the brake pad, so as to realize the deceleration or parking of the vehicle. The performance of the brake caliper directly affects the braking effect and safety of the automobile. As the core component of the brake caliper, the piston assembly is crucial in design and function.

[0003] The traditional automobile brake caliper piston assembly usually adopts a fixed length design, which cannot be flexibly adjusted according to actual needs. When it is necessary to adapt to brake pads of different sizes or types, the traditional piston assembly often cannot provide sufficient flexibility and adaptability, resulting in poor braking effect or failure to work normally. There are also certain difficulties in the installation and disassembly process of the traditional piston assembly. Due to the lack of convenient installation and disassembly mechanism, the staff often needs to spend a lot of time and effort to complete these operations, which is not only low in efficiency, but also may cause damage to the brake caliper and the piston assembly. Therefore, we propose a piston assembly of automobile brake caliper. SUMMARY

[0004] The utility model aims at providing a piston assembly of automobile brake caliper to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A piston assembly of automobile brake caliper, comprising a piston body, an installation sleeve is arranged inside the piston body, an installation block is slidably arranged on the installation sleeve, a threaded rod is rotatably arranged on the installation block, the threaded rod penetrates through the installation sleeve and is threadedly connected with the installation sleeve, a cavity is further arranged inside the installation block, the threaded rod penetrates through the cavity and extends into the cavity, a worm wheel is arranged on the threaded rod inside the cavity through key connection, a worm is rotatably arranged on the installation block, the worm and the worm wheel are intermeshed, a hollow groove is further arranged inside the piston body, a first sliding block is slidably arranged in the hollow groove, a clamping block is arranged on the first sliding block, a clamping groove matched with the clamping block is arranged on the installation sleeve, a supporting rod is further arranged on the first sliding block, the supporting rod penetrates through the piston body and is slidably connected with the piston body.

[0007] As a further scheme of the utility model, an installation cavity is further arranged inside the installation sleeve, a telescopic rod is arranged inside the installation cavity, a second sliding block is arranged at the end of the telescopic arm, a limiting rod is arranged on the second sliding block, a limiting groove matched with the limiting rod is arranged on the clamping block.

[0008] As a further scheme of the utility model: the mounting block and the mounting sleeve constitute a mounting rod mechanism.

[0009] As a further scheme of the utility model: the outer side of the supporting rod is sleeved with a first spring in the hollow groove, one end of the first spring is connected with the inner wall of the hollow groove, the other end of the first spring is connected with the first sliding block, and a handle is arranged on the supporting rod.

[0010] As a further scheme of the utility model: the outer side of the worm is further provided with an adjusting groove.

[0011] As a further scheme of the utility model: the outer side of the telescopic rod is sleeved with a second spring, one end of the second spring is connected with the second sliding block, and the other end of the second spring is connected with the inner wall of the mounting cavity.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] 1. Under the action of the worm and the worm wheel, the threaded rod can be conveniently rotated, thereby driving the mounting block to slide on the mounting sleeve, realizing flexible adjustment of the length of the mounting rod mechanism, and the piston assembly can adapt to brake pads of different sizes or types, improving the adaptability and flexibility of the braking system, and the self-locking function of the worm wheel and the worm also ensures that the adjusted length is stable and reliable and is not prone to loosening or change;

[0014] 2. Under the action of the first sliding block, the clamping block, the clamping groove and the limiting rod, the mounting sleeve and the piston body can be conveniently connected and separated, which not only reduces the labor intensity of the workers, but also improves the work efficiency, and is convenient for maintenance and replacement of the piston assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the utility model embodiment.

[0016] Fig. 2 It is a structural schematic view of the utility model embodiment from the side.

[0017] Fig. 3 It is a structural schematic view of the piston body in the utility model embodiment.

[0018] Fig. 4 It is a structural schematic view of the A place in the utility model embodiment.

[0019] The reference signs are annotated: 1, piston body; 2, mounting sleeve; 3, mounting block; 4, threaded rod; 5, worm wheel; 6, worm; 601, adjusting groove; 7, first sliding block; 8, clamping block; 9, supporting rod; 901, handle; 10, first spring; 11, second sliding block; 12, limiting rod; 13, telescopic rod; 14, second spring. DETAILED DESCRIPTION

[0020] The following embodiments will be described in detail with reference to the accompanying drawings, in the drawings or the description, similar or identical parts use the same reference signs, and in practical application, the shape, thickness or height of each component can be enlarged or reduced. The embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modification or change made to the utility model does not deviate from the spirit and scope of the utility model.

[0021] EMBODIMENT

[0022] Please refer to Figs. 1-4 In the utility model embodiment, a piston assembly of an automobile brake caliper, including piston body 1, piston body 1 inside is provided with mounting sleeve 2, mounting sleeve 2 is provided with mounting block 3 slidingly, at this time under the action of mounting block 3, telescopic mounting block 3 and mounting sleeve 2 constitute mounting rod mechanism, at this time under the action of mounting rod mechanism, piston body 1 can be connected with external equipment, mounting block 3 is also provided with threaded rod 4 rotationally, threaded rod 4 penetrates mounting sleeve 2 and is screw connected with mounting sleeve 2, at this time rotating threaded rod 4 can drive mounting block 3 to move, thereby the length of the mounting rod mechanism is adjusted, so that the piston body 1 can better meet the demand of actual use, thereby guarantee the use efficiency of the piston body 1.

[0023] Mounting block 3 is also provided with cavity inside, threaded rod 4 penetrates the cavity and extends to the inside of the cavity, threaded rod 4 is provided with worm wheel 5 in the inside of the cavity through key connection, mounting block 3 is also provided with worm 6 rotationally, worm 6 and worm wheel 5 are mutually engaged, at this time rotating worm 6 can drive threaded rod 4 to rotate through worm wheel 5, thereby the length of the mounting rod mechanism is adjusted better, in addition, because worm wheel 5 and worm 6 have self-locking function, thereby the length of the mounting rod mechanism after adjustment can be limited, thereby the mounting quality of the piston body 1 is guaranteed better, the outside end of worm 6 is also provided with adjusting groove 601, at this time under the action of adjusting groove 601, it is convenient for staff to adjust the length of the mounting rod mechanism through hexagonal wrench, thereby better meet the demand of actual use.

[0024] The piston body 1 is internally provided with an empty slot, the first sliding block 7 is slidably arranged in the empty slot, the clamping block 8 is arranged on the first sliding block 7, the clamping groove is arranged on the mounting sleeve 2, and the mounting quality of the mounting sleeve 2 is ensured under the action of the clamping block 8 and the clamping groove. The supporting rod 9 is arranged on the first sliding block 7, penetrates through the piston body 1 and is slidably connected with the piston body 1, the clamping block 8 is conveniently removed from the mounting sleeve 2 under the action of the supporting rod 9, the first spring 10 is further arranged on the outer side of the supporting rod 9 and located in the empty slot, one end of the first spring 10 is connected with the inner wall of the empty slot, the other end of the first spring 10 is connected with the first sliding block 7, and the connecting quality of the clamping block 8 and the clamping groove is ensured under the action of the first spring 10. The handle 901 is arranged at the outer end of the supporting rod 9, and the supporting rod 9 can be driven to move through the handle 901.

[0025] The mounting sleeve 2 is internally provided with a mounting cavity, the telescopic rod 13 is arranged in the mounting cavity, the second sliding block 11 is arranged at the telescopic arm end of the telescopic rod 13, the limiting rod 12 is arranged on the second sliding block 11, the limiting groove is arranged on the clamping block 8, and the connecting quality of the clamping block 8 and the clamping groove is ensured under the action of the limiting rod 12. The second spring 14 is arranged on the outer side of the telescopic rod 13, one end of the second spring 14 is connected with the second sliding block 11, and the other end of the second spring 14 is connected with the inner wall of the mounting cavity. The connecting quality of the limiting rod 12 and the limiting groove is ensured under the action of the second spring 14.

[0026] In actual use, the mounting rod mechanism formed by the mounting sleeve 2 and the mounting block 3 in the piston body 1 is connected with external equipment, in the installation process, the mounting sleeve 2 is first placed in the piston body 1, then the worm 6 is rotated, the worm 6 is engaged with the worm gear 5 to drive the threaded rod 4 to rotate, the threaded rod 4 is threadedly connected with the mounting sleeve 2, so that the mounting block 3 is driven to slide on the mounting sleeve 2, the length of the mounting rod mechanism is adjusted to adapt to different installation requirements, the self-locking function of the worm gear 5 and the worm 6 ensures that the adjusted length is stable and not easy to loosen, the mounting sleeve 2 is fixed, the first sliding block 7 is arranged in the empty slot in the piston body 1, the clamping block 8 on the first sliding block 7 is matched with the clamping groove of the mounting sleeve 2, when disassembly is needed, the supporting rod 9 is pulled through the handle 901, the first sliding block 7 is driven to move by the supporting rod 9, the clamping block 8 is separated from the clamping groove, at the same time, the first spring 10 provides a restoring force to ensure the close connection between the clamping block 8 and the clamping groove. The mounting cavity in the sleeve 2 is provided with the telescopic rod 13, the limiting rod 12 on the second sliding block 11 at the telescopic arm end is matched with the limiting groove of the clamping block 8, and the mounting stability is further ensured. The second spring 14 provides a restoring force for the telescopic rod 13, and the close connection between the limiting rod 12 and the limiting groove is maintained.

[0027] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0028] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A piston assembly for an automotive brake caliper, comprising a piston body (1), characterized in that, The piston body (1) is provided with an installation sleeve (2) inside. An installation block (3) is slidably provided on the installation sleeve (2). A threaded rod (4) is rotatably provided on the installation block (3). The threaded rod (4) passes through the installation sleeve (2) and is threadedly connected to the installation sleeve (2). The installation block (3) is also provided with a cavity inside. The threaded rod (4) passes through the cavity and extends into the cavity. A worm wheel (5) is provided on the threaded rod (4) inside the cavity via a key connection. A worm (6) is also rotatably provided on the installation block (3). The worm (6) meshes with the worm wheel (5). The piston body (1) is also provided with a slot inside. A first slider (7) is slidably provided in the slot. A locking block (8) is provided on the first slider (7). A locking groove is provided on the installation sleeve (2) to cooperate with the locking block (8). A support rod (9) is also provided on the first slider (7). The support rod (9) passes through the piston body (1) and is slidably connected to the piston body (1).

2. The piston assembly of the automotive brake caliper according to claim 1, characterized in that, The mounting sleeve (2) is also provided with a mounting cavity, and a telescopic rod (13) is provided inside the mounting cavity. A second slider (11) is provided at the end of the telescopic arm of the telescopic rod (13). A limit rod (12) is provided on the second slider (11). A limit groove is provided on the locking block (8) to cooperate with the limit rod (12).

3. The piston assembly of the automotive brake caliper according to claim 1, characterized in that, The mounting block (3) and the mounting sleeve (2) constitute the mounting rod mechanism.

4. The piston assembly of the automotive brake caliper according to claim 1, characterized in that, The support rod (9) is also fitted with a first spring (10) inside the slot. One end of the first spring (10) is connected to the inner wall of the slot, and the other end of the first spring (10) is connected to the first slider (7). The support rod (9) is provided with a handle (901).

5. The piston assembly of the automotive brake caliper according to claim 1, characterized in that, An adjustment groove (601) is also provided at the outer end of the worm (6).

6. The piston assembly of the automotive brake caliper according to claim 2, characterized in that, The telescopic rod (13) is fitted with a second spring (14) on its outer side. One end of the second spring (14) is connected to the second slider (11), and the other end of the second spring (14) is connected to the inner wall of the mounting cavity.

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