Environment-friendly corrosion-resistant brake caliper piston

Abstract

The utility model relates to the technical field of caliper pistons, in particular to an environment-friendly corrosion-resistant brake caliper piston which comprises a piston body, a fixing sleeve is installed on the outer side wall of the piston body, a protective sleeve is installed on the outer side wall of the fixing sleeve, an end cover is installed at the top end of the piston body, and a flow guide groove is formed in the outer side wall of the protective sleeve. The end cover is fixedly provided with a stop membrane flap, and the end cover is fixedly provided with a stop membrane flap; the sealing gasket is installed between the piston body and the end cover, the check-out membrane flap and the check-in membrane flap correspond to the two ends of the flow guide groove respectively, abrasion is reduced through the material characteristic of the protective sleeve, meanwhile, the flow guide groove is formed in the surface of the protective sleeve, hydraulic oil in the caliper cylinder body flows in the flow guide groove, and the hydraulic oil is prevented from flowing out. The protection sleeve and the caliper cylinder body are always in an efficient lubrication state, meanwhile, small-particle chippings can be discharged, and the abrasion-resistant and corrosion-resistant effects are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to caliper piston technical field, especially to a kind of environment-friendly corrosion-resistant brake caliper piston. BACKGROUND

[0002] Brake caliper piston is one of the key components in automobile brake system, it is usually a cylindrical component, installed in the cylinder of brake caliper, its main role is in the braking process, received by brake fluid transmission pressure and moves outward, push brake pad and brake disc contact, generate friction, so as to realize the braking of vehicle.

[0003] The existing Chinese patent: a kind of automobile brake caliper piston, patent number: CN214661651 U, including piston body, piston body includes opposite first end face and second end face, first end face connects brake pad, second end face is equipped with piston groove, the outer wall of piston body is equipped with several ring grooves, oil storage groove is equipped between adjacent ring grooves, sealing element is equipped in ring groove, sealing element includes support framework, support framework is U-shaped structure, the both ends of support framework are equipped with the gasket that is in contact with the side wall of ring groove, the center of first end face is equipped with boss, the periphery of boss is equipped with several friction faces, friction face is symmetrically arranged about boss. Set multiple ring grooves, oil storage groove is arranged between adjacent ring grooves, can play double sealing effect, strengthen sealing performance, guarantee the effect and stability when braking. While oil storage groove includes first oil storage groove and second oil storage groove, can increase the area of oil seal sealing cover, further strengthen sealing effect.

[0004] But in the process of implementation of the above technical scheme, at least the following technical problems are found: the above-mentioned piston is lubricated by the lubricating oil in the two oil storage grooves, the lubricating oil in the oil storage groove will gradually decrease with the increase of use time, thereby causing the friction force between the piston and the caliper cylinder to continuously increase, resulting in wear and corrosion of the piston and the caliper cylinder, and the small particle debris generated by the wear will accumulate in the oil storage groove, thereby further increasing the wear and corrosion of the piston. UTILITY MODEL CONTENTS

[0005] (I) technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides an environment-friendly corrosion-resistant brake caliper piston, which solves the technical problems of the above-mentioned piston, which is lubricated by the lubricating oil in the two oil storage grooves, the lubricating oil in the oil storage groove will gradually decrease with the increase of use time, thereby causing the friction force between the piston and the caliper cylinder to continuously increase, resulting in wear and corrosion of the piston and the caliper cylinder, and the small particle debris generated by the wear will accumulate in the oil storage groove, thereby further increasing the wear and corrosion of the piston.

[0007] (II) technical scheme

[0008] To achieve the above object, the utility model discloses the following technical scheme to realize:

[0009] A kind of environment-friendly corrosion-resistant brake caliper piston, including piston main body, the outer lateral wall of piston main body is equipped with fixed sleeve, the outer lateral wall of fixed sleeve is equipped with protective sleeve, the top end of piston main body is equipped with end cover, the outer lateral wall of protective sleeve is equipped with flow guide groove, end cover is fixedly installed with stop out membrane petal, end cover is fixedly installed with stop in membrane petal;Sealing pad is installed between piston main body and end cover, stop out membrane petal, stop in membrane petal respectively with the both ends of flow guide groove correspond, the inside of piston main body is equipped with weight-reducing groove, wave-shaped support piece is installed in the inside of weight-reducing groove, piston main body, protective sleeve and end cover are connected by bolt, the bottom of piston main body is equipped with sealing sleeve.

[0010] Preferably, the bottom of the piston main body is fixedly installed with a clamping block.

[0011] Preferably, the bottom of the fixed sleeve and the protective sleeve is equipped with a bayonet; the opening at the bottom of the fixed sleeve and the protective sleeve corresponds to the clamping block.

[0012] (Three) beneficial effects

[0013] One, the outer surface of the protective sleeve is equipped with a flow guide groove, hydraulic oil will flow through the flow guide groove when pushing the piston, which can reduce the friction between the piston and the caliper cylinder body. In this process, since the stop out membrane petal is large at the top and small at the bottom, and the stop in membrane petal is small at the top and large at the bottom, the hydraulic oil will only enter the flow guide groove along the stop out membrane petal under the action of pressure, and will not enter the flow guide groove along the stop in membrane petal. Similarly, the hydraulic oil inside the flow guide groove will only be discharged along the stop in membrane petal and will not be discharged along the stop out membrane petal. Therefore, the hydraulic oil inside the flow guide groove flows and exchanges with the hydraulic oil outside, thereby reducing the friction between the protective sleeve and the caliper cylinder body. Even if a small amount of small particle debris appears, it will also be discharged from the contact surface of the protective sleeve and the caliper cylinder body along with the flow of hydraulic oil. The material properties of the protective sleeve itself reduce wear and tear. At the same time, by equipping the flow guide groove on the surface of the protective sleeve, the hydraulic oil in the caliper cylinder body flows in the flow guide groove, so that the protective sleeve and the caliper cylinder body are always in an efficient lubrication state. At the same time, small particle debris can be discharged, achieving the effect of wear resistance and corrosion resistance.

[0014] Two, multiple weight-reducing grooves are equipped inside the piston main body, which can greatly reduce the demand for production materials. At the same time, wave-shaped support pieces are filled between the weight-reducing grooves. The wave-shaped support pieces can more evenly distribute the load they bear, reducing local stress concentration and thereby improving the overall load-carrying capacity and increasing the bending and torsional resistance. The unique shape performs better when facing bending and torsional forces. By equipping weight-reducing grooves and filling wave-shaped support pieces inside the weight-reducing grooves, the production materials can be reduced while maintaining high strength, achieving the effect of reducing the consumption of production materials and being more environmentally friendly and economical. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the guide channel of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the protective sleeve of this utility model;

[0018] Figure 3 This is a structural diagram of the end cap of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 5 This is an exploded structural diagram of the present invention;

[0021] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A.

[0022] Legend: 1. Piston body; 2. Fixed sleeve; 3. Protective sleeve; 4. End cap; 5. Clamping block; 6. Flow guide groove; 7. Weight reduction groove; 8. Waveform support plate; 9. Bolt; 11. Outflow diaphragm flap; 12. Inflow diaphragm flap; 13. Sealing sleeve. Detailed Implementation

[0023] The environmental protection and corrosion resistant brake caliper piston provided by the embodiment of the application effectively solves the above-mentioned piston, the lubricating oil in the two oil storage grooves is used for lubrication, the lubricating oil in the oil storage grooves gradually decreases with the increase of the use time, thereby causing the friction force between the piston and the caliper cylinder body to continuously increase, causing the piston and the caliper cylinder body to be abraded and corroded, small particle debris abraded from the piston is accumulated in the oil storage grooves, thereby further increasing the abrasion and corrosion of the piston, the outer surface of the protective sleeve is provided with a flow guide groove, hydraulic oil flows through the flow guide groove when the hydraulic oil pushes the piston, the friction force between the piston and the caliper cylinder body is reduced, in this process, because the upper part of the outflow membrane flap is large and the lower part is small, and the upper part of the inflow membrane flap is small and the lower part is large, the hydraulic oil only flows into the flow guide groove along the outflow membrane flap under the action of the pressure, and the hydraulic oil does not flow into the flow guide groove along the inflow membrane flap, similarly, the hydraulic oil in the flow guide groove only flows out along the inflow membrane flap and does not flow out along the outflow membrane flap, thereby causing the hydraulic oil in the flow guide groove to flow and exchange with the hydraulic oil outside, thereby causing the hydraulic oil to always exist between the protective sleeve and the caliper cylinder body to reduce the friction, and even if a small amount of small particle debris exists, the small particle debris is also discharged from the contact surface between the protective sleeve and the caliper cylinder body along with the flow of the hydraulic oil, the abrasion is reduced through the material properties of the protective sleeve itself, and the flow guide groove is provided on the surface of the protective sleeve, the hydraulic oil in the caliper cylinder body flows in the flow guide groove, the protective sleeve and the caliper cylinder body are always in an efficient lubrication state, and the small particle debris can be discharged, the abrasion resistance and corrosion resistance are achieved, a plurality of weight reduction grooves are provided in the piston main body, the demand for production materials is greatly reduced, and a wave-shaped support piece is filled between the weight reduction grooves, the wave-shaped support piece can more evenly disperse the load borne, reduces local stress concentration, thereby improving the overall load capacity and increasing the bending resistance and torsional resistance; the unique shape performs better when facing bending and torsional forces, the weight reduction grooves are provided and the wave-shaped support piece is filled in the weight reduction grooves, the production materials are reduced while the high strength is maintained, and the effect of reducing the consumption of production materials and being more environmentally friendly and economical is achieved.

[0024] Embodiment

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 indicated, the technical scheme in the embodiment of the application effectively solves the above-mentioned piston, the lubricating oil in the two oil storage grooves is used for lubrication, the lubricating oil in the oil storage grooves gradually decreases with the increase of the use time, thereby causing the friction force between the piston and the caliper cylinder body to continuously increase, causing the piston and the caliper cylinder body to be abraded and corroded, small particle debris abraded from the piston is accumulated in the oil storage grooves, thereby further increasing the abrasion and corrosion of the piston, the overall idea is as follows:

[0026] In view to the problems in the prior art, the utility model provides an environmental protection corrosion -resisting type brake calliper piston, including piston main part 1, the outside wall of piston main part 1 is installed with fixed sleeve 2, the outside wall of fixed sleeve 2 is installed with protective sleeve 3, the top of piston main part 1 is installed with end cover 4, the outside wall of protective sleeve 3 is set up with flow guide groove 6.

[0027] The end cover 4 is fixedly installed with the stop film petal 11, and the end cover 4 is fixedly installed with the stop film petal 12;The piston main part 1 and the end cover 4 are installed with the sealing pad, the stop film petal 11, the stop film petal 12 correspond to the both ends of flow guide groove 6 respectively, the inside of piston main part 1 is set up with the lightening groove 7, and the inside of lightening groove 7 is installed with the wave support sheet 8.

[0028] The piston main part 1, the protective sleeve 3 and the end cover 4 are connected through bolt 9, the bottom of piston main part 1 is installed with sealing sleeve 13, the bottom of piston main part 1 is fixedly installed with the clamping block 5, and the bottom of fixed sleeve 2 and protective sleeve 3 is set up with the bayonet respectively;The opening of fixed sleeve 2, the bottom of protective sleeve 3 corresponds with the clamping block 5.

[0029] Working principle:

[0030] The first step, the fixed sleeve 2 between the piston body 1 and the protective sleeve 3 is made of rubber material, has a certain elasticity and friction, can make the piston body 1 and the protective sleeve 3 closely fit, the protective sleeve 3 and the end cover 4 are made of stainless steel material, and the surface is sprayed with zirconia ceramic coating, the zirconia ceramic coating has very high hardness, so that the protective sleeve 3 and the end cover 4 can keep good working condition for a long time in the environment of frequent friction, the stainless steel itself has certain corrosion resistance, and in addition to the protection of the zirconia ceramic coating, can work stably in various severe corrosive environments, effectively prolong the service life, so the protective sleeve 3 and the end cover 4 itself have the characteristics of corrosion resistance and friction resistance, the outer surface of the protective sleeve 3 is provided with a flow guide groove 6, the hydraulic oil will flow through the flow guide groove 6 when pushing the piston, so as to reduce the friction between the piston and the caliper cylinder body, in this process, since the large lower small upper of the stop out membrane flap 11 and the small lower big upper of the stop in membrane flap 12, the hydraulic oil will only enter the flow guide groove 6 along the stop out membrane flap 11 under the action of pressure, and will not enter the flow guide groove 6 along the stop in membrane flap 12, for the same reason, the hydraulic oil in the flow guide groove 6 will only be discharged along the stop in membrane flap 12 and will not be discharged along the stop out membrane flap 11, so that the hydraulic oil in the flow guide groove 6 flows and exchanges with the hydraulic oil outside, so that the protective sleeve 3 and the caliper cylinder body always exist hydraulic oil to reduce friction, and even if a small amount of small particle debris appears, it will also be discharged from the contact surface of the protective sleeve 3 and the caliper cylinder body along with the flow of the hydraulic oil, the abrasion is reduced through the material properties of the protective sleeve 3 itself, and the flow guide groove 6 is also provided on the surface of the protective sleeve 3, so that the hydraulic oil in the caliper cylinder body flows in the flow guide groove 6, so that the protective sleeve 3 and the caliper cylinder body are always in an efficient lubrication state, and small particle debris can also be discharged, achieving the effect of wear resistance and corrosion resistance.

[0031] The second step, the piston body 1 is provided with a plurality of weight reduction grooves 7, which can greatly reduce the demand for production materials, and the wave-shaped supporting sheet 8 is filled between the weight reduction grooves 7, the wave-shaped supporting sheet 8 can more evenly distribute the load it bears, reduce local stress concentration, thereby improving the overall load capacity and increasing the bending and torsional resistance; its unique shape performs better when facing bending and torsional forces, by providing the weight reduction grooves 7 and filling the wave-shaped supporting sheet 8 in the weight reduction grooves 7, the production materials can be reduced while maintaining high strength, achieving the effect of reducing the consumption of production materials and being more environmentally friendly and economical.

[0032] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation mode. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An environmentally friendly and corrosion-resistant brake caliper piston, comprising a piston body (1), characterized in that, A fixing sleeve (2) is installed on the outer side wall of the piston body (1), a protective sleeve (3) is installed on the outer side wall of the fixing sleeve (2), an end cap (4) is installed on the top of the piston body (1), a guide groove (6) is opened on the outer side wall of the protective sleeve (3), an exit diaphragm flap (11) is fixedly installed on the end cap (4), and an ingress diaphragm flap (12) is fixedly installed on the end cap (4). Among them, a sealing gasket is installed between the piston body (1) and the end cover (4), and the outflow diaphragm (11) and the inflow diaphragm (12) correspond to the two ends of the guide groove (6), respectively.

2. The environmentally friendly and corrosion-resistant brake caliper piston as described in claim 1, characterized in that, The piston body (1) has a weight reduction groove (7) inside, and a wave-shaped support plate (8) is installed inside the weight reduction groove (7).

3. The environmentally friendly and corrosion-resistant brake caliper piston as described in claim 1, characterized in that, The piston body (1), the protective sleeve (3), and the end cap (4) are connected by bolts (9).

4. The environmentally friendly and corrosion-resistant brake caliper piston as described in claim 1, characterized in that, A sealing sleeve (13) is installed at the bottom end of the piston body (1).

5. The environmentally friendly and corrosion-resistant brake caliper piston as described in claim 1, characterized in that, A locking block (5) is fixedly installed at the bottom end of the piston body (1).

6. The environmentally friendly and corrosion-resistant brake caliper piston as described in claim 1, characterized in that, Both the fixing sleeve (2) and the protective sleeve (3) have a latch at their bottom ends; Among them, the openings at the bottom of the fixing sleeve (2) and the protective sleeve (3) correspond to the locking block (5).

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