Energy accumulator with raised sealing cover

Abstract

The utility model discloses an energy accumulator with a protruding type sealing cover, and relates to the field of automobile chassis braking. Comprising a convex sealing cover, a shock pad and an energy accumulator main body, the protruding type sealing cover is arranged at the top of the energy accumulator body, and the shock pad is arranged outside the protruding type sealing cover and makes close contact with the protruding type sealing cover. The energy accumulator with the protruding type sealing cover comprises a top cover, a cylindrical supporting column and a riveting platform, the cylindrical supporting column is arranged below the top cover, the riveting platform is arranged below the cylindrical supporting column, and the riveting platform, the top cover and the cylindrical supporting column are of an integrated structure. By controlling the protruding height of the protruding type sealing cover, enough compression and return space can be provided for a spring in the energy accumulator, the protruding type sealing cover can be better protected through the shock pad, the service life is prolonged, meanwhile, excessive stretching of the energy accumulator body is avoided, and the research and development cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive chassis braking, in particular to an accumulator with a convex cover. Background Art

[0002] With the continuous development of automotive electrification and intelligence, the demand for products related to the by-wire chassis braking system is increasing day by day. As a core technology of the active safety system, the electronic stability control system (ESC) is of great significance for improving the stability of vehicles in complex driving environments. For different types and tonnages of vehicle models, the requirements for calipers and liquid storage capacity are also different. To meet the needs of high-tonnage customers, the development of large-liquid-storage ESC assembly products is also extremely urgent.

[0003] The increase in vehicle weight will also increase the requirement for the liquid volume stored in the accumulator of the ESC product. Therefore, the volume of the accumulator chamber needs to be increased, which inevitably elongates the length of the valve block again. Therefore, a series of component design changes are required to make the accumulator meet the new liquid storage requirements, and at the same time, the starting pressure and return pressure during its operation also need to be met. In this case, the length of the accumulator spring will also increase. To meet the requirements for the compression space and rebound space of the accumulator spring, the side of the accumulator piston needs to be elongated, and the length of the valve block also needs to be further lengthened. This inevitably makes the cost of accumulator components higher and the R & D cost higher. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an accumulator with a convex cover, which solves the problem of minimizing the R & D cost of the product while ensuring the normal operation of the accumulator under the condition of high liquid storage requirements, and at the same time ensures the normal operation of the internal spring of the accumulator.

[0005] To achieve the above purpose, the utility model provides an accumulator with a convex cover, which includes a convex cover, a shock pad and an accumulator body; the convex cover is arranged on the top of the accumulator body, the shock pad is arranged outside the convex cover, and the shock pad is in close contact with the convex cover; the convex cover includes a top cover, a cylindrical support column and a riveting platform, the cylindrical support column is arranged below the top cover, the riveting platform is arranged below the cylindrical support column, and the riveting platform, the top cover and the cylindrical support column are of an integrated structure.

[0006] Preferably, the accumulator body includes a valve block, a piston, a spring and a chamber, the valve block is arranged outside the chamber, the valve block is riveted and connected with the riveting platform, the piston is arranged inside the chamber, one end of the spring is connected with the piston, and the end of the spring far away from the piston is arranged inside the convex top cover.

[0007] Preferably, the chamber is filled with brake fluid, and the brake fluid is located below the piston.

[0008] Preferably, the piston is equipped with an O-ring seal, and the O-ring seal is made of rubber.

[0009] Preferably, the diameter of the piston is larger than the diameter of the cylindrical support column and smaller than the diameter of the riveting platform.

[0010] Preferably, the liquid storage capacity of the chamber inside the valve block is 8 cc, and the valve block is provided with a multi-functional valve hole.

[0011] Therefore, the accumulator with a convex cover of the present utility model adopts the above structure, which ensures the normal operation of the accumulator while reducing the product development cost. And to ensure the normal operation of the spring inside the accumulator, a convex accumulator cover structure is adopted. When the spring is compressed to the required working resistance, the piston contacts the lower bottom surface of the cover, preventing further compression of the spring. And a shock pad is used to better protect the convex cover and extend its service life.

[0012] The technical solution of the present utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of an accumulator with a convex cover of the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the convex cover of the accumulator with a convex cover of the present utility model;

[0015] Reference Signs

[0016] 1. Convex cover; 11. Top cover; 12. Cylindrical support column; 13. Riveting platform; 2. Spring; 3. Shock pad; 4. Valve block; 5. Piston; 6. O-ring seal; 7. Chamber. Detailed Embodiments

[0017] The technical solution of the present utility model will be further described below with reference to the drawings and embodiments.

[0018] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings understood by those with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar terms used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0019] Embodiment

[0020] As Figure 1 and Figure 2 As shown, an accumulator with a convex cover of the present utility model includes a convex cover 1, a shock pad 3 and an accumulator body; the convex cover 1 is arranged on the top of the accumulator body, the shock pad 3 is arranged outside the convex cover 1, and the shock pad 3 is in close contact with the convex cover 1; the close contact between the shock pad 3 and the convex cover 1 helps to form an effective seal, thereby preventing the entry of external pollutants, dust and moisture; the convex cover 1 includes a top cover 11, a cylindrical support column 12 and a riveting platform 13, the cylindrical support column 12 is arranged below the top cover 11, the riveting platform 13 is arranged below the cylindrical support column 12, and the riveting platform 13, the top cover 11 and the cylindrical support column 12 are of an integrated structure. The accumulator body includes a valve block 4, a piston 5, a spring 2 and a chamber 7, the valve block 4 is arranged outside the chamber 7, the valve block 4 is riveted to the riveting platform 13, the piston 5 is arranged inside the chamber 7, one end of the spring 2 is connected to the piston 5, and the end of the spring 2 away from the piston 5 is arranged inside the convex top cover 11. The chamber 7 is filled with brake fluid, and the brake fluid is below the piston 5. The piston 5 is equipped with an O-ring 6, the O-ring 6 is made of rubber, and the design of the O-ring 6 can form a good seal under pressure to prevent liquid leakage. The diameter of the piston 5 is larger than the diameter of the cylindrical support column 12 and smaller than the diameter of the riveting platform 13. The liquid storage capacity of the chamber 7 inside the valve block 4 is 8 cc, and the valve block 4 is provided with a multi-functional valve hole.

[0021] The accumulator of the present utility model with a convex cover has a working mode that the brake fluid flows from the valve block 4 into the accumulator chamber 7, and the hydraulic pressure of the brake fluid pushes the piston 5 to compress the spring 2. When the piston 5 is pushed by the hydraulic pressure and contacts the riveting platform 13 at the bottom end of the convex cover 1, the movement of the piston 5 is restricted by the riveting platform 13 and there is no space for further movement. This position is the position where the accumulator stores the most liquid, and at this time, the spring 2 is also in the state of the working height H2.

[0022] Therefore, the accumulator of the present utility model with a convex cover adopting the above structure uses the structure of the convex cover, which ensures that while the accumulator works normally, the R & D cost of the product is reduced, and the normal operation of the internal spring of the accumulator is ensured. When the spring is compressed to the required working resistance, the piston contacts the lower bottom surface of the cover, providing enough movement space for the spring, preventing further compression of the spring, and using a shock pad can better protect the convex cover, extending the service life of the accumulator. At the same time, the riveting connection method is used, which has the advantages of easy disassembly and replacement, good anti-fatigue performance, small connection deformation, and high bearing strength.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. An accumulator with a raised cover, characterized in that: The utility model comprises a raised cover, a shock absorbing pad and an accumulator body; the raised cover is arranged on the top of the accumulator body, the shock absorbing pad is arranged outside the raised cover, and the shock absorbing pad is in close contact with the raised cover; The raised cover includes a top cover, a cylindrical support column and a riveted platform, wherein the cylindrical support column is arranged below the top cover, and the riveted platform is arranged below the cylindrical support column, and the riveted platform, the top cover and the cylindrical support column are an integrated structure.

2. The accumulator with a raised cover according to claim 1, characterized in that: The accumulator body includes a valve block, a piston, a spring and a chamber. The valve block is arranged on the outside of the chamber and is riveted and pressed to the riveting platform. The piston is arranged inside the chamber. One end of the spring is connected to the piston, and the end of the spring away from the piston is arranged inside the raised top cover.

3. The accumulator with a raised cover according to claim 2, characterized in that: The chamber is filled with brake fluid, and the brake fluid is located below the piston.

4. The accumulator with a raised cover according to claim 3, characterized in that: The piston is provided with an O-type sealing ring, and the O-type sealing ring is a rubber structure.

5. The accumulator with a raised cover according to claim 4, characterized in that: The diameter of the piston is larger than the diameter of the cylindrical support column and smaller than the diameter of the riveting platform.

6. The accumulator with a raised cover according to claim 5, characterized in that: The liquid storage capacity of the chamber inside the valve block is 8cc, and the valve block is provided with a multifunctional valve hole.

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