Caliper piston

Abstract

The utility model belongs to the technical field of pistons, and particularly relates to a caliper piston, a stand is fixedly arranged in the center of the upper end of a piston body, a heat dissipation ring is fixedly arranged on the periphery of the upper end of the piston body, and hydraulic oil pushes the piston body to move to enable the stand to abut against a brake pad for braking. The stand and the heat dissipation ring are attached, heat conduction and heat dissipation are conducted through the hollow heat dissipation assembly and the groove type heat dissipation assembly arranged at the upper end of the piston body, the heat dissipation performance of the piston body can be improved, and the situation that the temperature of a brake pad is too high, and consequently braking safety is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to piston technical field, especially a calliper piston. BACKGROUND

[0002] The calliper piston is one of the key components of the parking brake system, which is located in the calliper, and the main function of the calliper piston is to realize brake operation by pushing brake pads or brake pads. In the brake or high temperature weather, the temperature of the calliper piston will rise sharply, and the heat dissipation performance of the existing calliper piston is poor, thereby affecting the brake safety. SUMMARY

[0003] The utility model aims at the above -mentioned technical problem, provides a calliper piston to solve the problem in the above -mentioned background art.

[0004] Therefore, the utility model provides a calliper piston, which comprises a piston body,

[0005] A column is fixedly arranged at the center of the upper end of the piston body.

[0006] A heat dissipation assembly is arranged at the upper end of the piston body, and the heat dissipation assembly comprises a hollow heat dissipation assembly and a groove type heat dissipation assembly.

[0007] A heat dissipation ring is fixedly arranged at the outer periphery of the upper end of the piston body.

[0008] In the above technical scheme, further, the hollow heat dissipation assembly comprises:

[0009] Heat dissipation channels are arranged at equal intervals on the surface of the upper end of the piston body.

[0010] First heat dissipation fins are fixedly arranged at equal intervals in the heat dissipation channels.

[0011] In the above technical scheme, further, the groove type heat dissipation assembly comprises:

[0012] Arc-shaped heat dissipation grooves are arranged at equal intervals on the side wall of the upper end of the piston body.

[0013] Second heat dissipation fins are fixedly arranged at equal intervals in the arc-shaped heat dissipation grooves.

[0014] In the above technical scheme, further, the hollow heat dissipation assembly further comprises:

[0015] Thermal conductive silicone grease is coated on the inner surface of the heat dissipation channels between the first heat dissipation fins.

[0016] In the above technical scheme, further, the surface of the column is uniformly provided with a plurality of first anti-absorption grooves.

[0017] Further, the surface of the heat dissipation ring is annularly and uniformly provided with a plurality of second anti-absorption grooves.

[0018] In the above technical solution, further, the outer surface of the side wall of the piston body is provided with two annular grooves, a fixing framework is arranged in the annular groove, the radial section of the fixing framework is in U-shaped structure, the fixing framework is provided with elastic notches, the fixing framework is filled with lubricating grease, and rubber gaskets are arranged on both sides of the fixing framework and abut against the inner wall of the annular groove.

[0019] In the above technical solution, further, the outer peripheral wall of the rubber gasket is embedded with a graphite sealing strip.

[0020] The utility model discloses the beneficial effects are:

[0021] 1. The hollow heat dissipation assembly and the groove type heat dissipation assembly arranged on the upper end of the piston body are used for heat dissipation of the abutment of the column and the heat dissipation ring, so that the heat dissipation performance of the piston body is improved, and the brake safety is not affected by the excessively high temperature of the brake pad.

[0022] 2. The heat-conducting silicone grease is coated on the inner surface of the heat dissipation channel between the first heat dissipation fins, so that heat can be transferred to the heat dissipation channel and the first heat dissipation fins.

[0023] 3. The graphite sealing strip is arranged on the outer peripheral wall of the rubber gasket, so that the wear resistance of the outer peripheral wall of the rubber gasket is improved during the working friction of the caliper, the sealing property is improved, and the exosmosis of the lubricating grease is avoided. DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is an exploded view of the utility model;

[0026] Figure 3 It is a heat dissipation assembly structure schematic diagram of the utility model;

[0027] Figure 4 It is a sectional view of the utility model;

[0028] Figure 5 It is a sectional view of the utility model Figure 4 It is a local enlarged view of A in the utility model;

[0029] Figure 6 It is a fixing framework structure schematic diagram of the utility model;

[0030] The figure is marked as: 1-piston body, 2-stand column, 3-radiator ring, 4-radiator channel, 5-first radiator fin, 6-arc-shaped radiator groove, 7-second radiator fin, 8-heat-conducting silicone grease, 9-first anti-absorption groove, 10-second anti-absorption groove, 11-ring groove, 12-fixing framework, 13-rubber gasket, 14-elastic notch, 15-graphite sealing strip. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0032] Embodiment 1:

[0033] The present embodiment provides a caliper piston, comprising:

[0034] The piston body 1;

[0035] The stand column 2 is fixedly arranged at the center of the upper end of the piston body 1;

[0036] The heat dissipation assembly is arranged at the upper end of the piston body 1, and the heat dissipation assembly comprises a hollow heat dissipation assembly and a groove type heat dissipation assembly;

[0037] The radiator ring 3 is fixedly arranged at the outer periphery of the upper end of the piston body 1.

[0038] It can be seen from the present embodiment that the stand column 2 is fixedly arranged at the center of the upper end of the piston body 1, and the radiator ring 3 is fixedly arranged at the outer periphery of the upper end of the piston body 1. The hydraulic oil drives the piston body 1 to move, so that the stand column 2 pushes against the brake pad to brake. The stand column 2 and the radiator ring 3 are in close contact and are heat-conducted and dissipated through the hollow heat dissipation assembly and the groove type heat dissipation assembly arranged at the upper end of the piston body 1. The heat dissipation performance of the piston body 1 can be improved, and the temperature of the brake pad is prevented from being too high, thereby affecting the safety of the brake.

[0039] Embodiment 2:

[0040] The present embodiment provides a caliper piston, in addition to comprising the technical solutions of the above-mentioned embodiments, further having the following technical features.

[0041] The hollow heat dissipation assembly comprises:

[0042] The radiator channel 4 is equally spaced and arranged on the surface of the upper end of the piston body 1;

[0043] The first radiator fin 5 is fixedly arranged inside the radiator channel 4.

[0044] The embodiment can be seen that the heat dissipation area is expanded by the first heat dissipation fin 5 during use to conduct heat dissipation.

[0045] Embodiment 3:

[0046] The embodiment provides a caliper piston, which comprises the technical solutions of the above embodiments and has the following technical features.

[0047] The slot type heat dissipation assembly comprises:

[0048] The arc-shaped heat dissipation slot 6 is arranged at the upper end side wall of the piston body 1 at equal intervals.

[0049] The second heat dissipation fin 7 is fixed at the inner part of the arc-shaped heat dissipation slot 6 at equal intervals.

[0050] The embodiment can be seen that the arc-shaped heat dissipation slot 6 is arranged at the upper end side wall of the piston body 1 at equal intervals, and the second heat dissipation fin 7 is fixed at the inner part of the arc-shaped heat dissipation slot 6 at equal intervals, so that the heat dissipation area is expanded and the heat dissipation performance is further improved.

[0051] Embodiment 4:

[0052] The embodiment provides a caliper piston, which comprises the technical solutions of the above embodiments and has the following technical features.

[0053] The hollow heat dissipation assembly further comprises:

[0054] The heat-conducting silicone grease 8 is coated on the inner surface of the heat dissipation through slot 4 between the first heat dissipation fins 5.

[0055] The embodiment can be seen that the heat-conducting silicone grease 8 is coated on the inner surface of the heat dissipation through slot 4 between the first heat dissipation fins 5, so that heat can be transferred to the heat dissipation through slot 4 and the first heat dissipation fins 5.

[0056] Embodiment 5:

[0057] The embodiment provides a caliper piston, which comprises the technical solutions of the above embodiments and has the following technical features.

[0058] The surface of the column 2 is annularly and uniformly distributed with a plurality of first anti-adsorption slots 9.

[0059] The embodiment can be seen that the first anti-adsorption slots 9 can prevent the column 2 and the brake pad from being adsorbed.

[0060] Embodiment 6:

[0061] The embodiment provides a caliper piston, which comprises the technical solutions of the above embodiments and has the following technical features.

[0062] The surface of the heat dissipation ring 3 is evenly provided with a plurality of second anti-adsorption grooves 10 in an annular array.

[0063] It can be seen from the embodiment that the second anti-adsorption grooves 10 can prevent the heat dissipation ring 3 from being adsorbed by the brake pad.

[0064] Embodiment 7:

[0065] The caliper piston provided in the embodiment further has the following technical features in addition to the technical solutions in the above embodiments.

[0066] The outer surface of the side wall of the piston body 1 is provided with two annular grooves 11, and a fixed framework 12 is arranged in each annular groove 11. The radial section of the fixed framework 12 is in a U-shaped structure, and the fixed framework 12 is provided with an elastic notch 14. The fixed framework 12 is filled with lubricating grease, and the two sides of the fixed framework 12 are each provided with a rubber gasket 13 abutting against the inner wall of the annular groove 11.

[0067] It can be seen from the embodiment that the two rubber gaskets 13 are extruded and fixed in the annular grooves 11 by the fixed frameworks 12, so that the rubber gaskets 13 are prevented from deforming and failing due to stress in use. The radial section of the fixed framework 12 is in a U-shaped structure, that is, the outer periphery of the fixed framework 12 is provided with a U-shaped groove, and the lubricating grease is filled in the U-shaped groove to increase the lubricity when the outer wall of the piston body slides. In actual use, the maximum outer diameter of the rubber gasket 13 is slightly larger than the outer diameter of the piston body 1, so that the rubber gasket 13 can play a sealing role in use and prevent the lubricating oil from leaking outward. The outer diameter of the fixed framework 12 is slightly smaller than the outer diameter of the piston body 1, so that the rubber gasket 13 can play a corresponding deformation role in use and reduce the sliding resistance of the piston body 1.

[0068] The fixed framework 12 is made of a metal piece with a certain elasticity. The fixed framework 12 can be radially deformed by the setting of the elastic notch 14, which facilitates installation and can rely on the elastic force of itself to play a fixing role.

[0069] Embodiment 8:

[0070] The caliper piston provided in the embodiment further has the following technical features in addition to the technical solutions in the above embodiments.

[0071] A graphite sealing strip 15 is embedded on the outer peripheral wall of the rubber gasket 13.

[0072] It can be seen from the embodiment that the setting of the graphite sealing strip 15 can increase the wear resistance of the outer peripheral wall of the rubber gasket 13 and improve the sealing property during the working friction of the caliper, and prevent the lubricating grease from leaking outward.

[0073] Working principle: in use, hydraulic oil pushes the piston body 1 to move, so that the column 2 presses against the brake pad to brake, at this time the column 2 and the heat dissipation ring 3 are in contact with the brake pad and are in contact with the hollow heat dissipation assembly and the groove type heat dissipation assembly to conduct heat and dissipate heat, the first anti-absorption groove 9 and the second anti-absorption groove 10 on the surface of the column 2 and the heat dissipation ring 3 can prevent the column 2 and the heat dissipation ring 3 from being adsorbed with the brake pad.

[0074] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments in the present application can be combined with each other without conflict, and the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A caliper piston characterized in that, The utility model relates to a piston body (1); The upper end of the piston body (1) is fixedly provided with a column (2) in the center; The upper end of the piston body (1) is provided with a heat dissipation assembly, and the heat dissipation assembly comprises a hollow heat dissipation assembly and a groove type heat dissipation assembly; The upper end of the piston body (1) is fixedly provided with a heat dissipation ring (3) on the periphery. The hollow heat dissipation assembly comprises:

2. A caliper piston according to claim 1, characterized in that The upper end surface of the piston body (1) is provided with heat dissipation through grooves (4) at equal intervals; The first heat dissipation fins (5) are fixedly arranged in the heat dissipation through grooves (4) at equal intervals. The groove type heat dissipation assembly comprises:

3. A caliper piston according to claim 2, wherein The upper end side wall of the piston body (1) is provided with arc-shaped heat dissipation grooves (6) at equal intervals; The second heat dissipation fins (7) are fixedly arranged in the arc-shaped heat dissipation grooves (6) at equal intervals. The hollow heat dissipation assembly further comprises:

4. A caliper piston according to claim 3, wherein The heat-conducting silicone grease (8) is coated on the inner surface of the heat dissipation through grooves (4) between the first heat dissipation fins (5). The surface of the column (2) is uniformly distributed with a plurality of first anti-absorption grooves (9) in an annular array.

5. A caliper piston according to claim 4, wherein The surface of the heat dissipation ring (3) is uniformly distributed with a plurality of second anti-absorption grooves (10) in an annular array.

6. A caliper piston according to claim 5, wherein The outer surface of the side wall of the piston body (1) is provided with two annular grooves (11), and the annular grooves (11) are provided with fixed skeletons (12) inside; 7. A caliper piston as in claim 6 wherein, The radial section of the fixed skeleton (12) is in a U-shaped structure, the fixed skeleton (12) is provided with an elastic notch (14), and the fixed skeleton (12) is filled with lubricating grease; 8. A caliper piston as in claim 7, wherein The two sides of the fixed skeleton (12) are provided with rubber gaskets (13) in contact with the inner wall of the annular groove (11). The outer peripheral wall of the rubber gasket (13) is embedded with a graphite sealing strip (15).

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