Intermediate cylinder structure for electric control shock absorber

Abstract

The middle cylinder structure comprises an upper cylinder body, a lower cylinder body and a connecting sleeve, the two ends of the connecting sleeve are connected with the upper cylinder body and the lower cylinder body respectively, one end of the inner wall of the connecting sleeve abuts against the outer wall of a working cylinder, and a gap is formed between the inner wall of the other end of the connecting sleeve and the outer wall of the working cylinder. A first mounting through hole is formed in the connecting sleeve which forms a gap with the outer wall of the working cylinder; and a second mounting through hole is formed in the upper cylinder body or the lower cylinder body. The middle cylinder structure has the advantages that the middle cylinder structure is formed by pressing and splicing the upper cylinder body, the lower cylinder body and the connecting sleeve, the structure is simple, machining is convenient, replacement is convenient, and the average service life of all the parts is prolonged; and meanwhile, the first mounting through hole is formed in the connecting sleeve, the design of a lower cylinder body or an upper flanging of the lower cylinder body is replaced, and then interference generated when the middle cylinder structure is mounted is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to an intermediate cylinder structure for an electric-controlled shock absorber. Background Art

[0002] The electronically controlled shock absorber mainly uses the solenoid valve to adjust the damping force generated under different strokes to meet the vibration reduction requirements under different road conditions; the electronically controlled shock absorber generally adopts a single solenoid valve structure. When the piston rod drives the oil to move, the oil in the upper chamber of the working cylinder will enter the middle cylinder chamber through the through hole at the upper end and then flow into the solenoid valve for regulation. However, in the single solenoid valve shock absorber, the path of the oil flowing to the solenoid valve is fixed, and it needs to flow through the same long oil circuit in both the recovery stroke and the compression stroke, which will cause the shock absorber damping force to respond insufficiently; at the same time, because the single solenoid valve has a relatively limited range of control over the damping force, it generally sacrifices part of the maximum value under the compression stroke to meet the damping force required under the recovery stroke, which results in the inability to provide a large damping force under the compression stroke, thus affecting the user experience.

[0003] At present, there is an urgent need for an intermediate cylinder structure that is easy to process and replace and can form two independent oil circuits for compression and recovery. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to provide an intermediate cylinder structure which is convenient for processing and replacement and can form two independent oil circuits for compression and recovery.

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

[0006] An intermediate cylinder structure for an electronically controlled shock absorber comprises an upper cylinder body, a lower cylinder body and a connecting sleeve, wherein the two ends of the connecting sleeve are respectively connected to the upper cylinder body and the lower cylinder body, one end of the inner wall of the connecting sleeve abuts against the outer wall of the working cylinder, and the other end of the inner wall has a gap with the outer wall of the working cylinder, a first mounting through hole is provided on the connecting sleeve with the gap with the outer wall of the working cylinder, and a second mounting through hole is provided on the upper cylinder body or the lower cylinder body.

[0007] The intermediate cylinder structure is formed by press-fitting and splicing three parts: an upper cylinder body, a lower cylinder body and a connecting sleeve. It is not only simple in structure and easy to process, but also easy to replace, which increases the average life of each part. At the same time, a first mounting through hole is provided on the connecting sleeve, which replaces the lower cylinder body or the flange design on the lower cylinder body, thereby reducing interference during the installation of the intermediate cylinder structure.

[0008] Preferably, a sealing ring groove is provided on the inner wall of the connecting sleeve abutting against the outer wall of the working cylinder.

[0009] Preferably, when the second mounting through hole is arranged on the upper cylinder body, one end of the connecting sleeve abutting against the outer wall of the working cylinder is arranged close to the upper cylinder body.

[0010] Preferably, a first step portion is provided on an outer wall of one end of the connecting sleeve close to the upper cylinder body, and the upper cylinder body is connected to the first step portion, and a second step portion is provided on an inner wall of one end of the connecting sleeve close to the lower cylinder body, and the lower cylinder body is connected to the second step portion.

[0011] Preferably, when the second mounting through hole is arranged in the lower cylinder body, one end of the connecting sleeve abutting against the outer wall of the working cylinder is arranged close to the lower cylinder body.

[0012] Preferably, a third step portion is provided on the outer wall of one end of the connecting sleeve close to the lower cylinder body, and the lower cylinder body is connected to the third step portion, and a fourth step portion is provided on the inner wall of one end of the connecting sleeve close to the upper cylinder body, and the upper cylinder body is connected to the fourth step portion.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The intermediate cylinder structure is formed by press-fitting and splicing three parts: an upper cylinder body, a lower cylinder body and a connecting sleeve. It is not only simple in structure and convenient in processing, but also easy in replacement, which increases the average life of each part. At the same time, a first mounting through hole is provided on the connecting sleeve, which replaces the lower cylinder body or the flange design on the lower cylinder body, thereby reducing interference during the installation of the intermediate cylinder structure.

[0015] 2. One end of the inner wall of the connecting sleeve is connected to the outer wall of the working cylinder, and there is a gap between the inner wall of the other end and the outer wall of the working cylinder, so that the intermediate cylinder structure forms an oil path for the oil of the recovery stroke and the compression stroke respectively, shortening the oil path and improving the response time of the solenoid valve to the working condition; and by forming a double-cavity design of the first cavity and the second cavity, the solenoid valves corresponding to the recovery and compression can fully regulate the corresponding working conditions without considering the impact on the other stroke, thereby improving the coverage of the damping force regulation of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the first embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of a connecting sleeve of Embodiment 1 of the utility model;

[0019] Figure 4 It is a partial cross-sectional view of the second embodiment of the utility model;

[0020] Figure 5 It is a cross-sectional view of the connecting sleeve of the second embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0022] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0024] Embodiment 1

[0025] See also Figures 1 to 3 This embodiment discloses an intermediate cylinder structure for an electronically controlled shock absorber, comprising an upper cylinder body 1, a lower cylinder body 2 and a connecting sleeve 3, wherein the two ends of the connecting sleeve 3 are respectively connected to the upper cylinder body 1 and the lower cylinder body 2, and the connecting sleeve 3 is provided with a first mounting through hole 31 for mounting a compression solenoid valve, and the upper cylinder body 1 is provided with a second mounting through hole 11 for mounting a recovery solenoid valve.

[0026] Specifically, one end of the inner wall of the connecting sleeve 3 close to the upper cylinder body 1 abuts against the outer wall of the working cylinder 4, and there is a gap between the inner wall of the other end and the outer wall of the working cylinder 4, so that a first cavity 5 is formed between the upper cylinder body 1 and the working cylinder 4, and a second cavity 6 is formed between the lower cylinder body 2 and the working cylinder 4, thereby forming two independent oil circuits for compression and recovery in the intermediate cylinder structure.

[0027] Furthermore, a sealing ring groove 301 is provided on the inner wall of the connecting sleeve 3 abutting against the outer wall of the working cylinder 4 for installing a sealing ring to block the oil flow between the first cavity 5 and the second cavity 6, thereby forming a recovery chamber and a compression chamber of the intermediate cylinder structure.

[0028] Furthermore, a first step portion 32 is provided on the outer wall of one end of the connecting sleeve 3 close to the upper cylinder body 1, and the upper cylinder body 1 is connected to the first step portion 32. A second step portion 33 is provided on the inner wall of one end of the connecting sleeve 3 close to the lower cylinder body 2, and the lower cylinder body 2 is connected to the second step portion 33.

[0029] The intermediate cylinder structure in this embodiment is formed by pressing and splicing three parts: an upper cylinder body 1, a lower cylinder body 2 and a connecting sleeve 3. It is not only simple in structure and easy to process, but also easy to replace, which increases the average life of each part. At the same time, a first mounting through hole 301 is provided on the connecting sleeve 3, which replaces the flange design on the lower cylinder body 2, thereby reducing interference during the installation of the intermediate cylinder structure.

[0030] In addition, by connecting one end of the inner wall of the connecting sleeve 3 to the outer wall of the working cylinder 4 and a gap between the inner wall of the other end and the outer wall of the working cylinder 4, the intermediate cylinder structure forms an oil path for the oil of the recovery stroke and the compression stroke respectively, shortening the oil path and improving the response time of the solenoid valve to the working condition; and by forming a double-cavity design of the first cavity 5 and the second cavity 6, the solenoid valves corresponding to the recovery and compression can fully regulate the corresponding working conditions without considering the impact on the other stroke, thereby improving the coverage of the damping force regulation of the shock absorber.

[0031] Embodiment 2

[0032] See also Figure 4 and Figure 5 The difference between this embodiment and the first embodiment is that the second mounting through hole 11 starts on the lower cylinder body 2, one end of the inner wall of the connecting sleeve 3 close to the lower cylinder body 2 abuts against the outer wall of the working cylinder 4, and there is a gap between the inner wall of the other end and the outer wall of the working cylinder 4.

[0033] Furthermore, a third step portion 34 is provided on the outer wall of one end of the connecting sleeve 3 close to the lower cylinder body 2, and the lower cylinder body is connected to the third step portion 34. A fourth step portion 35 is provided on the inner wall of one end of the connecting sleeve 3 close to the upper cylinder body 1, and the upper cylinder body 1 is connected to the fourth step portion 35.

[0034] The intermediate cylinder structure in this embodiment is formed by press-fitting and splicing three parts: an upper cylinder body 1, a lower cylinder body 2 and a connecting sleeve 3. It is not only simple in structure and easy to process, but also easy to replace, thereby increasing the average life of each part. At the same time, a first mounting through hole is provided on the connecting sleeve 3, which replaces the flange design on the upper cylinder body 1, thereby reducing interference during the installation of the intermediate cylinder structure.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0036] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and all of these belong to the protection scope of the utility model.

Claims

1. An intermediate cylinder structure for an electronically controlled shock absorber, characterized in that: It includes an upper cylinder body, a lower cylinder body and a connecting sleeve, wherein two ends of the connecting sleeve are respectively connected to the upper cylinder body and the lower cylinder body, one end of the inner wall of the connecting sleeve abuts against the outer wall of the working cylinder, and the other end of the inner wall has a gap with the outer wall of the working cylinder, and a first mounting through hole is opened on the connecting sleeve with a gap with the outer wall of the working cylinder, and a second mounting through hole is opened on the upper cylinder body or the lower cylinder body.

2. The intermediate cylinder structure for an electronically controlled shock absorber according to claim 1, characterized in that: A sealing ring groove is arranged on the inner wall of the connecting sleeve abutting against the outer wall of the working cylinder.

3. The intermediate cylinder structure for an electronically controlled shock absorber according to claim 1, characterized in that: When the second mounting through hole is arranged on the upper cylinder body, one end of the connecting sleeve abutting against the outer wall of the working cylinder is arranged close to the upper cylinder body.

4. The intermediate cylinder structure for an electronically controlled shock absorber according to claim 3, characterized in that: The outer wall of one end of the connecting sleeve close to the upper cylinder body is provided with a first step portion, and the upper cylinder body is connected to the first step portion. The inner wall of one end of the connecting sleeve close to the lower cylinder body is provided with a second step portion, and the lower cylinder body is connected to the second step portion.

5. The intermediate cylinder structure for an electronically controlled shock absorber according to claim 1, characterized in that: When the second mounting through hole is arranged in the lower cylinder body, one end of the connecting sleeve abutting against the outer wall of the working cylinder is arranged close to the lower cylinder body.

6. The intermediate cylinder structure for an electronically controlled shock absorber according to claim 5, characterized in that: The outer wall of one end of the connecting sleeve close to the lower cylinder body is provided with a third step portion, and the lower cylinder body is connected to the third step portion. The inner wall of one end of the connecting sleeve close to the upper cylinder body is provided with a fourth step portion, and the upper cylinder body is connected to the fourth step portion.

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