Front brake caliper piston

Abstract

The utility model belongs to the technical field of caliper pistons, and particularly relates to a front brake caliper piston which comprises a main body, one end of the main body in the axial direction is closed, the other end of the main body is open, an annular groove is formed in the surface of the open end, and a heat insulation ring is arranged at the open end of the main body. A plurality of airflow channels are circumferentially formed between the heat insulation ring and the main body; the heat insulation ring is arranged at the end, located at the opening, of the main body of the piston, namely the end, close to the caliper friction plate, of the main body of the piston, most heat conducted through the piston body is blocked, and the situation that the main body of the piston is heated due to heat conduction, then hydraulic oil is heated, and the performance of the hydraulic oil is affected is prevented; air flow between the friction plate and the piston can enter and be guided out through the multiple air flow channels, the heat dissipation effect on the heat insulation ring is effectively improved, the heat conduction effect is further reduced, hydraulic oil is prevented from being heated, the use performance and the service life of the hydraulic oil are guaranteed, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of caliper pistons, and particularly relates to a front brake caliper piston. Background Technique

[0002] The caliper is an important component in the automobile braking system, which is divided into a front brake caliper and a rear brake caliper. Usually, the front brake caliper and the rear brake caliper both consist of two caliper housings, pistons, friction plates and brake pad assemblies. The piston is pushed by hydraulic oil to further push the friction plate against the brake pad, and the rotation of the brake pad is blocked by friction, thereby preventing the rotation of the automobile tire to achieve braking. However, friction generates heat. When heat is generated due to friction between the friction plate and the brake pad, this part of the heat will be conducted to the piston and the hydraulic oil through the friction plate, affecting the performance of the hydraulic oil and the braking effect, and there are potential safety hazards.

[0003] For example, Chinese Patent Application No. (CN202020134475.0) discloses a piston with heat insulation, which sets heat insulation materials on the skirt of the piston, that is, the inner wall of the internal cavity, and fixes the heat insulation materials through a heat insulation baffle. However, the skirt of the piston body is usually made of metal, and the original internal cavity of the piston is air, that is, the heat conduction effect of the metal skirt is better than that of air. That is, most of the heat will still be conducted from the skirt of the piston to the head and then to the hydraulic oil, resulting in a decline in the performance of the hydraulic oil, affecting the braking effect, and there are potential safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a front brake caliper piston for the above-mentioned existing technical problems, achieving the effect of effectively blocking a large amount of heat generated by the friction between the friction plate and the brake pad from being conducted to the piston and the hydraulic oil.

[0005] In view of this, the utility model provides a front brake caliper piston, including:

[0006] A main body, one end along the axis is closed, the other end is open, and an annular groove is provided on the surface at the open end.

[0007] A heat insulation ring, installed at the open end of the main body, and a plurality of air flow channels are circumferentially provided between the heat insulation ring and the main body.

[0008] In the above technical solution, further:

[0009] An embedding groove is provided on the end face of the main body on the side close to the heat insulation ring along the axis, and a first protrusion adapted to the embedding groove is provided on the heat insulation ring;

[0010] Wherein, the first protrusion is fixedly connected with the embedding groove.

[0011] In the above technical solution, further:

[0012] The heat insulation ring is provided with a first extension portion on one side close to the axis of the first protrusion, and the first extension portion is fixedly connected to the inner wall of the main body;

[0013] Among them, both the first protrusion and the first extension portion are provided with at least two.

[0014] In the above technical solution, further:

[0015] Reinforcing ribs are provided on both sides of the first protrusion, and an air flow channel is formed between two adjacent reinforcing ribs.

[0016] In the above technical solution, further:

[0017] A plurality of anti-slip patterns are provided on the circumference of the surface of the heat insulation ring away from the main body.

[0018] In the above technical solution, further, it further includes:

[0019] A second protrusion, located on the side where the main body is closed, and coaxially arranged with the main body.

[0020] In the above technical solution, further:

[0021] The main body extends towards the side away from the heat insulation ring to form a second extension portion, and the second extension portion surrounds the second protrusion;

[0022] Among them, the dimension of the second protrusion along the axial direction is less than or equal to the dimension of the second extension portion along the axial direction.

[0023] The beneficial effects of the present utility model are:

[0024] 1. By providing a heat insulation ring at one end of the main body of the piston where it is open, that is, at the end close to the caliper friction plate, most of the heat conducted through the piston body is blocked, preventing the main body of the piston from being heated due to heat conduction, and further preventing the hydraulic oil from being heated, which affects the performance of the hydraulic oil.

[0025] 2. And a plurality of air flow channels are provided on the circumference of the side of the heat insulation ring close to the main body. When braking during the driving of the vehicle, the air flow between the friction plate and the piston can enter and exit through the plurality of air flow channels, which can effectively improve the heat dissipation effect of the heat insulation ring, further reduce the effect of heat conduction, prevent the hydraulic oil from being heated, ensure the service performance and service life of the hydraulic oil, and avoid potential safety hazards.

[0026] 3. The setting of the first protrusion and the groove improves the connection strength and stability between the heat insulation ring and the main body. The setting of the first extension part can further improve the connection strength and stability between the heat insulation ring and the main body. And through the setting of the reinforcing rib, the structural strength of the heat insulation ring is improved. The friction-increasing pattern can increase the frictional resistance between the heat insulation ring and the friction plate, avoid relative movement between the two, improve stability, and at the same time reduce the contact area between the heat insulation ring and the friction plate, further reducing the heat conduction efficiency.

[0027] 4. By setting the second protrusion at the closed end of the piston, the hydraulic oil can be guided in the circumferential direction, thereby improving the uniformity of the force of the hydraulic oil on the piston, avoiding stress concentration, and improving the stability of the piston movement. The setting of the second extension part can improve the installation stability of the piston. Description of the Drawings

[0028] Figure 1 is a schematic structural view of the present utility model;

[0029] Figure 2 is a side view of the present utility model;

[0030] Figure 3 is the present utility model Figure 2 a cross-sectional view taken along line A-A in;

[0031] The reference numerals in the figure are denoted as: 1, main body; 2, annular groove; 3, heat insulation ring; 4, air flow channel; 5, groove; 6, first protrusion; 7, first extension part; 8, reinforcing rib; 9, friction-increasing pattern; 10, second protrusion; 11, second extension part. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] Embodiment 1:

[0035] This embodiment provides a front brake caliper piston, including:

[0036] A main body 1, one end along the axial direction is closed, the other end is open, and an annular groove 2 is provided on the surface at the open end;

[0037] A heat insulation ring 3 is installed at the open end of the main body 1, and a plurality of air flow channels 4 are provided along the axial circumference between the heat insulation ring 3 and the main body 1;

[0038] Among them, the heat insulation ring 3 can be made of ceramic material, specifically alumina ceramic material; and the main body 1 is integrally formed by forging.

[0039] It can be seen from this embodiment that by providing a heat insulation ring 3 at the open end of the main body 1 of the piston, that is, the end close to the caliper friction plate, most of the heat conducted through the piston body is blocked, preventing the main body 1 of the piston from being heated due to heat conduction, and further causing the hydraulic oil to be heated, affecting the performance of the hydraulic oil;

[0040] And a plurality of air flow channels 4 are provided on the circumference of the heat insulation ring 3 close to the main body 1. When braking during the vehicle driving, the air flow between the friction plate and the piston can enter and exit through the plurality of air flow channels 4, which can effectively improve the heat dissipation effect of the heat insulation ring 3, further reduce the effect of heat conduction, avoid the hydraulic oil from being heated, ensure the service performance and service life of the hydraulic oil, and avoid potential safety hazards;

[0041] At the same time, the annular groove 2 is used to install a dust cover when the piston is installed. Therefore, setting the annular groove 2 on the surface of the main body 1 can avoid the influence of the heat insulation ring 3 on the installation of the dust cover.

[0042] Embodiment 2:

[0043] This embodiment provides a front brake caliper piston. In addition to including the technical solutions of the above embodiments, it also has the following technical features:

[0044] On one end face of the main body 1 close to the heat insulation ring 3 along the axial direction, a groove 5 is provided, and on the heat insulation ring 3, a first protrusion 6 adapted to the groove 5 is provided;

[0045] Among them, the first protrusion 6 is fixedly connected to the groove 5, and at least two first protrusions 6 and first grooves 5 are provided;

[0046] At the same time, the first protrusion 6 and the heat insulation ring 3 are of an integral structure, and an interference fit is adopted between the first protrusion 6 and the groove 5.

[0047] It can be seen from this embodiment that through the arrangement of the first protrusion 6 and the groove 5, the connection strength and stability between the heat insulation ring 3 and the main body 1 are improved.

[0048] Embodiment 3:

[0049] This embodiment provides a front brake caliper piston. In addition to including the technical solutions of the above embodiments, it also has the following technical features:

[0050] On one side of the first protrusion 6 close to the axis, the heat insulation ring 3 is provided with a first extension 7, and the first extension 7 is fixedly connected to the inner wall of the main body 1;

[0051] Among them, the first extension 7, the first protrusion 6 and the heat insulation ring 3 are of an integral structure, and an interference fit is adopted between the first extension 7 and the inner wall of the main body 1.

[0052] It can be seen from this embodiment that through the arrangement of the first extension 7, the connection strength and stability between the heat insulation ring 3 and the main body 1 can be further improved.

[0053] Embodiment 4:

[0054] This embodiment provides a front brake caliper piston. In addition to including the technical solutions of the above embodiments, it also has the following technical features:

[0055] On both sides of the first protrusion 6, reinforcing ribs 8 are provided, and an air flow channel 4 is formed between two adjacent reinforcing ribs 8;

[0056] Among them, the reinforcing ribs 8, the first protrusion 6 and the heat insulation ring 3 are of an integral structure.

[0057] It can be seen from this embodiment that through the arrangement of the reinforcing ribs 8, the structural strength of the heat insulation ring 3 and the structural strength at the air flow channel 4 are improved, and the axial positions of the heat insulation ring 3 and the main body 1 can be limited, improving the installation accuracy and stability.

[0058] Embodiment 5:

[0059] This embodiment provides a front brake caliper piston. In addition to the technical solutions of the above embodiment, it also has the following technical features:

[0060] On the circumferential surface of the side of the heat insulation ring 3 away from the main body 1, a plurality of friction-increasing grooves 9 are provided.

[0061] As can be seen from this embodiment, through the friction-increasing grooves 9, the frictional resistance between the heat insulation ring 3 and the friction plate can be increased, relative movement between the two can be avoided, stability can be improved, and at the same time, the contact area between the heat insulation ring 3 and the friction plate is reduced, further reducing the heat conduction efficiency.

[0062] Embodiment 6:

[0063] This embodiment provides a front brake caliper piston. In addition to the technical solutions of the above embodiment, it also has the following technical features, and further includes:

[0064] A second protrusion 10, located on the side of the main body 1 where the opening is closed, and coaxially arranged with the main body 1;

[0065] Among them, the second protrusion 10 and the main body 1 are of an integral structure.

[0066] As can be seen from this embodiment, by providing the second protrusion 10 at one end of the piston where the opening is closed, the hydraulic oil can be guided in the circumferential direction, thereby improving the uniformity of the force of the hydraulic oil on the piston, avoiding stress concentration, and improving the stability of the piston movement.

[0067] Embodiment 7:

[0068] This embodiment provides a front brake caliper piston. In addition to the technical solutions of the above embodiment, it also has the following technical features:

[0069] The main body 1 extends towards the side away from the heat insulation ring 3 to form a second extension part 11, and the second extension part 11 surrounds the second protrusion 10;

[0070] Among them, the axial dimension of the second protrusion 10 is less than or equal to the axial dimension of the second extension part 11.

[0071] As can be seen from this embodiment, through the setting of the second extension part 11, the stability of the piston installation can be improved, and the axial dimension of the second protrusion 10 is less than or equal to the axial dimension of the second extension part 11, which can prevent the second protrusion 10 from protruding from the axial surface of the main body 1 and ensure the stability of the second extension part 11 for the piston installation.

[0072] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A front brake caliper piston, characterized in that, Comprising: A main body (1), one axial end is closed and the other end is open, and an annular groove (2) is formed on the surface at the open end. A heat insulation ring (3) is installed on the open end of the main body (1), and a plurality of air flow channels (4) are formed circumferentially between the heat insulation ring (3) and the main body (1).

2. The front brake caliper piston according to claim 1, characterized in that: A slot (5) is formed on the end face of the main body (1) axially close to the heat insulation ring (3), and a first protrusion (6) adapted to the slot (5) is provided on the heat insulation ring (3); Wherein, the first protrusion (6) is fixedly connected to the slot (5), and at least two first protrusions (6) and first slots (5) are provided.

3. The front brake caliper piston according to claim 2, characterized in that: A first extension portion (7) is provided on the heat insulation ring (3) on the side close to the axis of the first protrusion (6), and the first extension portion (7) is fixedly connected to the inner wall of the main body (1).

4. The front brake caliper piston according to claim 2, characterized in that: Reinforcing ribs (8) are provided on both sides of the first protrusion (6), and the air flow channels (4) are formed between two adjacent reinforcing ribs (8).

5. The front brake caliper piston according to claim 2, characterized in that: A plurality of friction increasing patterns (9) are formed circumferentially on the surface of the heat insulation ring (3) away from the main body (1).

6. The front brake caliper piston according to claim 1, characterized in that, Further comprising: A second protrusion (10) is located on the closed side of the main body (1) and is coaxially arranged with the main body (1).

7. The front brake caliper piston according to claim 6, characterized in that: The main body (1) extends towards the side away from the heat insulation ring (3) to form a second extension portion (11), and the second extension portion (11) surrounds the second protrusion (10); Wherein, the axial dimension of the second protrusion (10) is less than or equal to the axial dimension of the second extension portion (11).

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