Piston energy accumulator for vehicle

Abstract

The utility model discloses a vehicle piston energy accumulator, and particularly relates to the technical field of piston energy accumulators, the vehicle piston energy accumulator comprises a piston arranged in an energy accumulator assembly, and two groups of orientation pieces used for guiding the piston are arranged in the energy accumulator assembly; an auxiliary part for enhancing the sealing performance is arranged outside each group of orientation parts; the auxiliary part comprises an inner sealing ring, outer sealing rings are arranged at the top end and the bottom end of the inner sealing ring, and the end, away from the inner sealing ring, of each outer sealing ring is sleeved with a pressing ring part. By rotating the adjusting ring in threaded connection with the threaded ring, the adjusting ring can drive the fastening ring to move inwards, the fastening ring extrudes the outer portion of the outer sealing ring, the outer sealing ring deforms and is tightly attached to the positioning column, the fastening ring can extrude the outer sealing ring in all directions, stress on the outer portion of the outer sealing ring is balanced, and the service life of the outer sealing ring is prolonged. Therefore, it is ensured that the outer sealing ring can be effectively attached to the positioning column, and the situation of leakage caused by gaps is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston accumulator technical field, more specifically, a kind of piston accumulator for vehicle. BACKGROUND

[0002] As a typical high-pressure energy storage device, the core structure of piston accumulator is composed of cylinder, floating piston, gas cavity (usually filled with inert gas such as nitrogen) and hydraulic oil cavity. Through the axial movement of the piston, the energy conversion and storage between the gas and hydraulic oil are realized. In the field of vehicle engineering, the function of the piston accumulator is highly dependent on the coupling design with the vehicle power system.

[0003] As shown in the prior art with publication number CN210882077U, although the prior art limits, supports and guides the movement of the piston by the two guide rods arranged between the gas end cover and the oil end cover, thereby improving the stability of the piston during movement, avoiding the problem that the piston in the accumulator has no guide structure in the prior art, which is easy to cause the piston to deviate when moving under uneven stress, resulting in a large friction between the piston and the inner wall of the accumulator, thereby reducing the service life and sensitivity of the piston, and at the same time, it may also cause leakage or jamming. However, the prior art adjusts the sealing performance of the sealing ring by rotating the bolt to drive the pressing plate to extrude the sealing ring, so that the sealing ring deforms and tightly contacts with the guide rod. However, the adjustment mode is composed of multiple bolts, which makes the adjustment of the sealing performance of the sealing ring more complicated, and the external pressure of the sealing ring is not balanced, which still causes leakage. SUMMARY

[0004] Therefore, the utility model provides a piston accumulator for vehicle to solve the problem that the adjustment mode is composed of multiple bolts in the prior art, which makes the adjustment of the sealing performance of the sealing ring more complicated, and the external pressure of the sealing ring is not balanced, which still causes leakage.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a piston accumulator for vehicle, comprising a piston arranged in the accumulator assembly, and two groups of directional pieces for guiding the piston are arranged in the accumulator assembly.

[0006] Each group of directional pieces is externally provided with an auxiliary piece for enhancing the sealing performance;

[0007] The auxiliary piece comprises an inner sealing ring, the top end and the bottom end of the inner sealing ring are provided with an outer sealing ring, and the outer end of the outer sealing ring away from the inner sealing ring is externally provided with a pressing ring piece;

[0008] The compression ring comprises an adjusting ring and a fastening ring, the fastening ring is arranged at one end of the adjusting ring away from the outer sealing ring, the inner diameter of the end of the fastening ring away from the adjusting ring is smaller than the outer diameter of the outer sealing ring, and the inner diameter of the end of the fastening ring close to the adjusting ring is greater than the outer diameter of the outer sealing ring.

[0009] Further, the accumulator assembly comprises a cylinder, an end cover, a sealing ring and a limit spring, the end cover is arranged inside the top end of the cylinder, the sealing ring is embedded outside the bottom end of the end cover, and the limit spring is arranged inside the bottom end of the cylinder, and the piston is arranged inside the cylinder.

[0010] Further, the orientation piece comprises two positioning columns, both of which are arranged inside the cylinder, and the top end of the positioning column is fixed with the bottom end of the end cover.

[0011] The side of the piston corresponding to the positioning column is provided with a through hole, the positioning column and the inner sealing ring are arranged inside the through hole, and the inner sealing ring and the outer sealing ring are sleeved outside the positioning column.

[0012] Further, the bottom end of the cylinder is provided with a positioning frame corresponding to the side of the positioning column, the top end of the positioning frame is provided with a positioning groove corresponding to the side of the positioning column, and the bottom end of the positioning column extends into the positioning groove.

[0013] Further, the two outer sealing rings located at the top end and the bottom end of the inner sealing ring are arranged at the top and the bottom of the piston respectively, and the outer side of the piston is provided with a threaded ring corresponding to the side of the outer sealing ring, the inner thread of one end of the threaded ring close to the piston is connected with an assembly ring, and the assembly ring is sleeved outside the one end of the outer sealing ring close to the piston.

[0014] Further, the end of the adjusting ring close to the piston extends into the threaded ring, and the adjusting ring is threadedly connected with the threaded ring.

[0015] Further, the outer diameter of the outer sealing ring is greater than the outer diameter of the inner sealing ring, and the inner diameter of the outer sealing ring is equal to the inner diameter of the inner sealing ring.

[0016] Further, the outer side of the piston is embedded with a piston sealing ring, and the outer side of the piston sealing ring is in contact with the inner wall of the cylinder.

[0017] The utility model has the advantages of:

[0018] By rotating the adjusting ring threadedly connected with the threaded ring, the adjusting ring can drive the fastening ring to move inward, and the outer side of the outer sealing ring is extruded by the fastening ring, so that the outer sealing ring deforms and tightly fits with the positioning column, and the fastening ring can extrude the outer sealing ring in all directions, so that the outer side of the outer sealing ring is balanced, thereby ensuring that the outer sealing ring can effectively fit with the positioning column, and avoiding the occurrence of leakage due to the gap. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 For the present utility model Figure 1 Enlarged view of section A in the middle;

[0023] Figure 3 For the present utility model Figure 1 Enlarged view of section B;

[0024] Figure 4 For the present utility model Figure 1 Enlarged view of section C;

[0025] Figure 5 This is an exploded view of the regulating ring of this utility model;

[0026] Figure 6 This is a cross-sectional view of the adjusting ring of this utility model;

[0027] Figure 7 This is a top view of the piston of this utility model;

[0028] Figure 8 This is a front view of the piston of this utility model;

[0029] Figure 9 This is a top view of the positioning frame of this utility model.

[0030] In the diagram: 1. Piston; 2. Inner sealing ring; 3. Outer sealing ring; 4. Adjusting ring; 5. Fastening ring; 6. Cylinder; 7. End cap; 8. Sealing ring; 9. Limiting snap ring; 10. Positioning pin; 11. Through hole; 12. Positioning bracket; 13. Positioning groove; 14. Threaded ring; 15. Assembly ring; 16. Piston sealing ring. Detailed Implementation

[0031] The following specific embodiments illustrate the embodiments of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosed content of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Referring to the drawings accompanying the specification Figures 1-9 The present application provides a kind of for vehicle piston energy accumulator, including being arranged in the inside of energy accumulator component piston 1, piston 1 outside embeds with piston seal ring 16, and piston seal ring 16 outside and cylinder 6 inner wall contact, by piston 1 on piston seal ring 16, can enhance the sealing effect between piston 1 and cylinder 6, energy accumulator component includes cylinder 6, end cover 7, sealing ring 8 and limit snap spring 9, end cover 7 is arranged in the inside of cylinder 6 top end, sealing ring 8 is embedded in the outside of end cover 7 bottom end, limit snap spring 9 is arranged in the inside of cylinder 6 bottom end, and piston 1 is arranged in the inside of cylinder 6, by the cooperation of cylinder 6, end cover 7 and piston 1, when gas-liquid enters the inside of cylinder 6, can reciprocatingly push piston 1 displacement, again by sealing ring 8 enhances the sealing performance of end cover 7, avoids the situation of leakage.

[0033] To ensure the displacement stability of piston 1, need to limit the direction of piston 1, as shown in Figure 1 And 3 As shown, two groups of directional pieces for guiding piston 1 are arranged in the inside of energy accumulator component;Directional piece includes two positioning columns 10, two positioning columns 10 are both arranged in the inside of cylinder 6, and the top end of positioning column 10 is fixed with the bottom of end cover 7 together;Piston 1 is provided with a through hole 11 on the side corresponding to positioning column 10, positioning column 10 and inner seal ring 2 are both arranged in the inside of through hole 11, and inner seal ring 2 and outer seal ring 3 are both sleeved on the outside of positioning column 10.

[0034] When using, by the sliding connection of positioning column 10 and piston 1, positioning column 10 can limit the movement of piston 1, to ensure the stability of piston 1 when moving up and down, avoid the situation that piston 1 is skewed and the friction is increased in the way of moving up and down, wherein, because positioning frame 12 is installed on the side of cylinder 6 bottom end corresponding to positioning column 10, and positioning groove 13 is provided on the side of positioning frame 12 top end corresponding to positioning column 10, the bottom end of positioning column 10 extends into the inside of positioning groove 13, so that positioning frame 12 can support the bottom end of positioning column 10, to ensure the stability of positioning column 10, avoid the situation that positioning column 10 is skewed and shakes, thereby ensuring the guiding effect of positioning column 10 on piston 1.

[0035] To avoid the leakage between the positioning column 10 and the piston 1, the close-fitting of the positioning column 10 and the piston 1 needs to be ensured, such as Figure 3 、 5 , 6 and 8, each group of directional pieces is externally provided with an auxiliary piece for enhancing the sealing performance; the auxiliary piece comprises an inner sealing ring 2, the top end and the bottom end of the inner sealing ring 2 are externally provided with an outer sealing ring 3, and the outer end of the outer sealing ring 3 away from the inner sealing ring 2 is externally sleeved with a pressing ring piece; the pressing ring piece comprises an adjusting ring 4 and a fastening ring 5, the fastening ring 5 is arranged at the outer end of the adjusting ring 4 away from the outer sealing ring 3, the inner diameter of the outer end of the fastening ring 5 away from the adjusting ring 4 is smaller than the outer diameter of the outer sealing ring 3, and the inner diameter of the end of the fastening ring 5 close to the adjusting ring 4 is larger than the outer diameter of the outer sealing ring 3.

[0036] When enhancing the close-fitting between the outer sealing ring 3 and the positioning column 10, the staff operates the adjusting ring 4 and drives the fastening ring 5 to move inward, because the inner diameter of the outer end of the fastening ring 5 away from the adjusting ring 4 is smaller than the outer diameter of the outer sealing ring 3, so that the fastening ring 5 can extrude the outer sealing ring 3 during the inward movement, so that the outer sealing ring 3 deforms and closely fits with the positioning column 10, and the fastening ring 5 can extrude the outer sealing ring 3 in all directions, so that the outer sealing ring 3 is balanced in stress, thereby ensuring that the outer sealing ring 3 can effectively fit with the positioning column 10, and avoiding the occurrence of leakage due to the gap.

[0037] To ensure the stability of the fastening ring 5 after adjustment, the adjusting ring 4 needs to be limited, such as Figure 3 、 5 and 6, the two outer sealing rings 3 arranged at the top end and the bottom end of the inner sealing ring 2 are arranged at the top and the bottom of the piston 1 respectively, and the side of the piston 1 corresponding to the outer sealing ring 3 is externally provided with a threaded ring 14, the inner thread of the end of the threaded ring 14 close to the piston 1 is threadedly connected with an assembly ring 15, the outer end of the outer sealing ring 3 close to the piston 1 is sleeved with the assembly ring 15, the end of the adjusting ring 4 close to the piston 1 extends into the threaded ring 14, and the adjusting ring 4 is threadedly connected with the threaded ring 14.

[0038] When the fastening ring 5 is limited, because the end of the adjusting ring 4 close to the piston 1 is threadedly connected with the threaded ring 14, when the staff rotates the adjusting ring 4 to drive the fastening ring 5 to move inward, the threaded ring 14 limits the adjusting ring 4 and the fastening ring 5 through the thread connection, so as to ensure the stability of the adjusting ring 4 and the fastening ring 5, and avoid the loosening of the fastening ring 5, and because the assembly ring 15 on the outer sealing ring 3 is also threadedly connected with the threaded ring 14, the staff can rotate the outer sealing ring 3 to drive the assembly ring 15 to separate from the threaded ring 14, so as to realize the effect of conveniently disassembling and replacing the outer sealing ring 3.

[0039] Wherein, because the outer diameter of the outer sealing ring 3 is greater than the outer diameter of the inner sealing ring 2, and the inner diameter of the outer sealing ring 3 is equal to the inner diameter of the inner sealing ring 2, the outer sealing ring 3 and the inner sealing ring 2 are in a stepped distribution, thereby the sealing performance can be improved to avoid the leakage.

[0040] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model, all belong to the scope of the utility model claimed.

Claims

1. A vehicle piston accumulator characterized by: The application relates to an accumulator assembly, which comprises a piston (1) arranged in the interior of the accumulator assembly, and two groups of orientation members arranged in the interior of the accumulator assembly and used for guiding the piston (1); Each group of orientation members is externally provided with an auxiliary member used for enhancing sealing performance; The auxiliary member comprises an inner sealing ring (2), the top end and the bottom end of the inner sealing ring (2) are externally provided with outer sealing rings (3), and the outer end of the outer sealing ring (3) away from the inner sealing ring (2) is externally sleeved with a pressing ring member; The pressing ring member comprises an adjusting ring (4) and a fastening ring (5), the fastening ring (5) is arranged at the outer end of the adjusting ring (4) away from the outer sealing ring (3), the inner diameter of the outer end of the fastening ring (5) away from the adjusting ring (4) is smaller than the outer diameter of the outer sealing ring (3), and the inner diameter of the outer end of the fastening ring (5) close to the adjusting ring (4) is larger than the outer diameter of the outer sealing ring (3).

2. The vehicle piston accumulator of claim 1, wherein: The accumulator assembly comprises a cylinder body (6), an end cover (7), a sealing ring (8) and a limiting snap spring (9), the end cover (7) is arranged in the interior of the top end of the cylinder body (6), the sealing ring (8) is embedded in the exterior of the bottom end of the end cover (7), and the limiting snap spring (9) is arranged in the interior of the bottom end of the cylinder body (6), and the piston (1) is arranged in the interior of the cylinder body (6).

3. The piston accumulator for a vehicle of claim 2, wherein: The orientation member comprises two positioning columns (10), the two positioning columns (10) are arranged in the interior of the cylinder body (6), and the top end of the positioning column (10) is fixed with the bottom of the end cover (7); The piston (1) is provided with a through hole (11) on the side corresponding to the positioning column (10), the positioning column (10) and the inner sealing ring (2) are arranged in the through hole (11), and the inner sealing ring (2) and the outer sealing ring (3) are sleeved on the outer side of the positioning column (10).

4. The piston accumulator for a vehicle of claim 3, wherein: The bottom end of the cylinder body (6) is provided with a positioning frame (12) on the side corresponding to the positioning column (10), the top end of the positioning frame (12) is provided with a positioning groove (13) on the side corresponding to the positioning column (10), and the bottom end of the positioning column (10) extends into the positioning groove (13).

5. The vehicle piston accumulator of claim 1, wherein: The two outer sealing rings (3) arranged at the top end and the bottom end of the inner sealing ring (2) are arranged at the top and the bottom of the piston (1) respectively, a threaded ring (14) is arranged on the side of the outer side of the piston (1) corresponding to the outer sealing ring (3), a fitting ring (15) is threadedly connected to the inner side of the end of the threaded ring (14) close to the piston (1), and the fitting ring (15) is sleeved on the outer side of the end of the outer sealing ring (3) close to the piston (1).

6. The vehicle piston accumulator of claim 5, wherein: The end of the adjusting ring (4) close to the piston (1) extends into the threaded ring (14), and the adjusting ring (4) is threadedly connected with the threaded ring (14).

7. The vehicle piston accumulator of claim 1, wherein: The outer diameter of the outer sealing ring (3) is larger than the outer diameter of the inner sealing ring (2), and the inner diameter of the outer sealing ring (3) is equal to the inner diameter of the inner sealing ring (2).

8. The vehicle piston accumulator of claim 2, wherein: The outer side of the piston (1) is embedded with a piston sealing ring (16), and the outer side of the piston sealing ring (16) is in contact with the inner wall of the cylinder body (6).

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