Electric control shock absorber with circulation groove in bottom cover

Abstract

The electric control shock absorber comprises a working cylinder and an oil storage barrel, the oil storage barrel is arranged on the outer side of the working cylinder, a base is arranged at the bottom of the working cylinder, the bottom cover is in interference fit with the bottom of the inner side of the oil storage barrel, a circulating hole is formed in the base, and the circulating groove is formed in the bottom cover. Oil in the working cylinder can flow into the circulating groove in the bottom cover through the circulating hole in the base and then flow into the oil storage barrel through the circulating groove. The circulating hole is formed in the working cylinder base, the circulating groove is formed in the oil storage barrel base, oil can flow into the circulating groove through the circulating hole in the base and then overflow into the oil storage barrel from the circulating groove, and compared with the prior art, the circulating direction of the oil is changed, the oil can flow out of the circulating groove in the bottom cover, and the oil storage barrel is more stable. Therefore, a piston sealing element is prevented from being scratched due to the fact that holes are formed in the working cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of electronically controlled shock absorbers, in particular to an electronically controlled shock absorber with a bottom cover having a flow slot. Background Art

[0002] The electronically controlled shock absorber is an electro-hydraulic shock absorber that is easy to operate and can achieve high-speed and high-precision vibration reduction control. The electronically controlled shock absorber controls the switching of the solenoid valve and the size of the channel through electric current, that is, controls the switching and size of the oil channel between the shock absorber's intermediate cylinder-1' and the oil reservoir-2', thereby achieving continuous adjustability of the overall damping force of the shock absorber.

[0003] However, there are still some deficiencies in the current electronically controlled shock absorber. For example, the bottom cover 4' of the electronically controlled shock absorber is mostly a solid structure. Figure 1 The base 3' at the bottom of the working cylinder 1' is connected to the bottom cover 4' without a gap. In order to achieve oil communication between the lower chamber of the working cylinder 1' and the oil storage cylinder 2', it is often necessary to open a flow hole on the working cylinder 1'. However, in this way, when the piston rod 6' performs piston movement, the flow hole opened on the working cylinder 1' will have the risk of scratching the piston sealing ring. Based on this, the present application proposes an electronically controlled shock absorber with a bottom cover having a flow groove. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to solve the problem that the opening on the working cylinder may scratch the piston sealing ring when the piston moves.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An electronically controlled shock absorber with a bottom cover and a flow groove comprises a working cylinder and an oil storage cylinder. The oil storage cylinder is arranged on the outside of the working cylinder, and a base is provided at the bottom of the working cylinder. The bottom of the inner bottom of the oil storage cylinder is interference-fitted with the bottom cover. The base is provided with a flow hole, and the bottom cover is provided with a flow groove. The oil in the working cylinder can flow into the flow groove on the bottom cover through the flow hole on the base, and then flow out from the flow groove into the oil storage cylinder.

[0007] This application opens a circulation hole on the base of the working cylinder and a circulation groove on the base of the oil storage barrel. The oil can flow into the circulation groove through the circulation hole on the base and then overflow into the oil storage barrel from the circulation groove. Compared with the existing technology, this application changes the flow direction of the oil so that the oil can flow out from the circulation groove on the bottom cover, thereby avoiding scratching the piston sealing element by the hole on the working cylinder.

[0008] As a further solution of the present invention: the front end of the bottom of the base is provided with a chamfer that matches the bottom cover, and the base and the bottom cover are matched with each other in an inclined manner.

[0009] As a further solution of the present invention: the chamfer range of the front end of the bottom of the base is 3±0.5 degrees.

[0010] As a further solution of the present invention: the position where the bottom cover is connected to the base is an inclined surface, and the angle range of the inclined surface is 28±2 degrees.

[0011] As a further solution of the present invention: the surface where the bottom cover is connected to the base is a conical surface, and the flow groove is provided on the conical surface.

[0012] As a further solution of the present invention: the flow grooves are provided in a plurality of groups in a circular array around the central axis of the bottom cover.

[0013] As a further solution of the present invention: a piston rod is provided inside the working cylinder and above the base, and the outside of the piston rod contacts the inner wall of the oil storage cylinder through a piston rod sealing ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This application provides a flow hole on the working cylinder base and a flow groove on the oil reservoir base. The oil can flow into the flow groove through the flow hole on the base and then overflow from the flow groove into the oil reservoir. Compared with the existing technology, this application changes the flow direction of the oil, allowing the oil to flow out from the flow groove on the bottom cover, thereby avoiding scratching the piston sealing element caused by the hole in the working cylinder;

[0016] 2. The present application designs the bottom cover into an overall conical structure, and is also designed with a large slope of 28±2 degrees, which can adapt to the base design with a larger diameter, thereby improving the flexibility and practicality of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the oil flow diagram of the existing scheme;

[0018] Figure 2 This is a schematic structural diagram of an electronically controlled shock absorber with a bottom cover and flow slots according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the bottom cover of an embodiment of the utility model;

[0020] Description of reference numerals:

[0021] 1', a working cylinder; 2', an oil reservoir; 3', a base; 4', a bottom cover; 6', a piston rod;

[0022] 1. Working cylinder; 2. Oil storage cylinder; 3. Base; 4. Bottom cover; 5. Circulation groove; 6. Piston rod; 7. Piston rod sealing ring. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] Reference Figure 2 An electronically controlled shock absorber with a bottom cover and a flow groove includes a working cylinder 1, an oil storage cylinder 2 and a piston rod 6, wherein the oil storage cylinder 2 is arranged on the outside of the working cylinder 1, the piston rod 6 is arranged inside the working cylinder 1, and a piston rod sealing ring 7 is provided on the outside of the bottom of the piston rod 6, and contacts the inner wall of the working cylinder 1 through the piston rod sealing ring 7.

[0025] Reference Figure 2 A base 3 is installed at the bottom of the working cylinder 1, and an oil circulation hole is opened on the base 3 so that the oil in the working cylinder 1 can be discharged from the oil circulation hole on the base 3.

[0026] Reference Figure 2 The oil storage cylinder 2 is located on the outside of the working cylinder 1, and there is a gap between the inner wall and the working cylinder 1. The oil discharged from the oil circulation hole will eventually enter the gap; a bottom cover 4 is installed at the bottom of the oil cylinder 2 and directly below the base 3. The bottom cover 4 can be interference connected with the oil cylinder 2, and the base 3 and the bottom cover 4 are tilted and matched.

[0027] Reference Figure 2 The front end of the bottom of the base 3 is provided with a chamfer that matches the bottom cover 4, and the range of the chamfer is 3±0.5 degrees. The position where the bottom cover 4 is connected to the base 3 is a bevel, and the angle range of the bevel is 28±2 degrees, which can adapt to the base design with a larger diameter. Therefore, the base 3 and the bottom cover 4 are matched through a large bevel of 28±2 degrees. The function of the 28±2 degree bevel is to prevent the base 3 from rotating.

[0028] Reference Figure 3 The side where the bottom cover 4 is connected to the base 3 is a conical surface, on which a flow slot 5 is provided. The flow slots are provided in a circular array with the central axis of the bottom cover 4 in six groups. It should be noted that the number of the flow slots 5 is at least three groups, which depends on the actual situation on site. This application does not limit this. Figure 3 The example of six groups of flow slots 5 is given only as one embodiment and should not be regarded as a limitation of the present application.

[0029] The specific operating principles of this application are as follows:

[0030] When in use, the oil flows through the flow hole on the base 3 into the flow groove 5 of the bottom cover 4, and then overflows into the oil storage cylinder 2 through the flow groove on the bottom cover 4. The oil flow path can be referred to the attached Figure 2 As indicated by the arrow, this flow path avoids the traditional technique of drilling holes on the side wall of the working cylinder 1, thereby preventing the opening of the working cylinder 1 from scratching the piston seal 7 when the piston rod 6 moves.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electronically controlled shock absorber with a bottom cover and a flow slot, characterized in that: The invention comprises a working cylinder (1) and an oil storage cylinder (2), wherein the oil storage cylinder (2) is arranged on the outside of the working cylinder (1), a base (3) is provided at the bottom of the working cylinder (1), and a bottom cover (4) is interference-fitted at the inner bottom of the oil storage cylinder (2), a circulation hole is provided on the base (3), and a circulation groove (5) is provided on the bottom cover (4), so that the oil in the working cylinder (1) can flow into the circulation groove (5) on the bottom cover (4) through the circulation hole on the base (3), and then flow out from the circulation groove (5) into the oil storage cylinder (2).

2. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 1, characterized in that: The front end of the bottom of the base (3) is provided with a chamfer that matches the bottom cover (4), and the base (3) and the bottom cover (4) are matched with each other in an inclined manner.

3. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 2, characterized in that: The chamfer angle of the front end of the bottom of the base (3) is in the range of 3±0.5 degrees.

4. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 2, characterized in that: The position where the bottom cover (4) is connected to the base (3) is an inclined surface, and the angle range of the inclined surface is 28±2 degrees.

5. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 1, characterized in that: The surface of the bottom cover (4) connected to the base (3) is a conical surface, and the flow groove (5) is provided on the conical surface.

6. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 5, characterized in that: The flow slots (5) are provided in a plurality of groups in a circular array around the central axis of the bottom cover (4).

7. The electronically controlled shock absorber with a bottom cover and flow slots according to claim 1, characterized in that: A piston rod (6) is provided inside the working cylinder (1) and above the base (3). The outside of the piston rod (6) contacts the inner wall of the oil storage cylinder (2) through a piston rod sealing ring (7).

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