Electromagnetic device for shock absorber
By using magnetic housing, O-ring and magnetic sleeve design in the shock absorber solenoid valve, replacing the traditional welding processing, the problems of large leakage volume of hydraulic devices and low product reliability are solved, and the effects of simple process, low cost and high production efficiency are achieved.
Patent Information
- Application Number
- CN202422031122.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-21
AI Technical Summary
Due to the machining accuracy and material characteristics of the existing electromagnetic devices of shock absorber solenoid valves, the hydraulic devices have large leakage, and the high-temperature welding method will change the electromagnetic performance, reduce product reliability, and have high welding processing costs and long production cycle.
The design of magnetic housing, O-type sealing ring and magnetic sleeve is adopted, and the O-type sealing is statically sealed instead of traditional welding processing to realize the assembly between the magnetic sleeve and the magnetic shell.
The process flow is simplified, costs are reduced, production efficiency is improved, production cycle is shortened, and the generation of excess is significantly reduced, which improves the reliability of solenoid valves.
Smart Images
Figure CN222910631U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solenoid valves, in particular to an electromagnetic device for a shock absorber. Background Art
[0002] As an important component of active and semi-active suspension systems, the performance of variable damping shock absorbers directly affects the handling stability and ride comfort of vehicles. Currently, variable damping shock absorbers are generally divided into step motor controlled orifice type, magnetorheological type, current variable type, and solenoid valve type, etc. Among them, the step motor controlled orifice type shock absorber has a slow response and cannot meet the requirement of real-time adjustment of damping force during the movement of the suspension; the magnetorheological type shock absorber and the current variable type are still in the theoretical research stage, with complex structures and unstable product performance; the solenoid valve type shock absorber has the characteristics of simple structure, rapid response, and stable performance, and has become the preferred mass production solution for active and semi-active suspensions.
[0003] Currently, the electromagnetic device of the shock absorber solenoid valve is affected by the machining accuracy of sub-components, material properties, etc. To reduce the leakage of the hydraulic device, competitors generally use high-temperature welding to connect the electromagnetic part. This type of welding method will change the electromagnetic performance of the electromagnetic part, and is extremely likely to cause material deformation, reducing product reliability, and the welding processing cost is high and the production cycle is long. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an electromagnetic device for a shock absorber.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] An electromagnetic device for a shock absorber, including a magnetic housing, a magnetic sleeve is fixedly sleeved inside the magnetic housing, an O-ring is sleeved on the outer wall of the magnetic sleeve, the O-ring is in contact with the inner wall of the magnetic housing, a magnetic washer is fixedly sleeved at one end of the magnetic sleeve, a push rod is slidably sleeved inside the magnetic washer, an armature is slidably sleeved inside the other end of the magnetic sleeve, a sleeve hole is opened in the middle of the armature, the other end of the push rod extends into the sleeve hole, a spring is sleeved on the outer wall of the push rod, the spring is located between the armature and the magnetic washer, and an electromagnetic coil is sleeved on the inner wall of the magnetic housing, and the electromagnetic coil is located between the magnetic housing and the magnetic sleeve.
[0007] Preferably, the shape of the magnetic housing is an annular sleeve, an annular protrusion is provided on the inner wall of the magnetic housing, a placement groove and a limit groove are opened at the position of the annular protrusion of the magnetic housing, the limit groove is located on the left side of the placement groove, the diameter of the limit groove is larger than the diameter of the placement groove, and the placement groove matches the O-ring.
[0008] Preferably, a limiting ring is provided on the outer wall of the left side of the magnetic sleeve. The magnetic sleeve and the limiting ring are integrally formed. The limiting ring is matched with the limiting groove, and the limiting ring is located on the left side of the O-ring seal.
[0009] Preferably, the magnetic housing and the magnetic sleeve are fixedly sleeved by an interference fit method, and the magnetic washer and the magnetic sleeve are fixedly sleeved by an interference fit method.
[0010] Preferably, the magnetic housing is integrally formed, and an external thread is provided on the outer wall of the side of the magnetic housing away from the magnetic sleeve.
[0011] Preferably, a sealing gasket is sleeved on the outer wall of the push rod. A clamping groove is provided on the right side of the magnetic washer. The sealing gasket is located in the clamping groove on the right side of the magnetic washer. One end of the spring contacts the outer wall of the armature, and the other end of the spring contacts the outer wall of the sealing gasket.
[0012] Preferably, oil discharge holes are provided on the outer wall of the armature, and there is at least one oil discharge hole.
[0013] The beneficial effects of the present utility model are as follows:
[0014] In the present utility model, through the design of the magnetic housing, the O-ring seal, and the magnetic sleeve, the O-ring seal is sleeved on the outside of the magnetic sleeve, and the magnetic sleeve and the magnetic housing can be assembled by an interference fit method. Compared with the traditional welding processing technology, the process is simple, the cost is low, the production efficiency is high, and the production cycle is shortened; secondly, the traditional welding method is changed to use an O-ring seal for static sealing, so that the electromagnetic device can meet the sealing requirements without welding, which can significantly reduce the generation of foreign matters and improve the reliability of the solenoid valve. Description of the Drawings
[0015] Figure 1 It is a schematic structural diagram of an electromagnetic device for a shock absorber of the present utility model.
[0016] Figure 2 It is a right view of an electromagnetic device for a shock absorber of the present utility model.
[0017] Figure 3 It is a sectional view taken along A-A of an electromagnetic device for a shock absorber of the present utility model. Figure 2 in the middle.
[0018] Figure 4 It is a schematic structural diagram of the magnetic housing of an electromagnetic device for a shock absorber of the present utility model.
[0019] Figure 5 It is a schematic structural diagram of the O-ring seal and the magnetic sleeve of an electromagnetic device for a shock absorber of the present utility model.
[0020] Figure 6 This is a schematic structural diagram of the armature of an electromagnetic device for a shock absorber of the present utility model.
[0021] Reference numerals in the figure: 1, magnetic housing; 101, annular protrusion; 102, placement groove; 103, limiting groove; 2, magnetic washer; 3, push rod; 4, O-ring; 5, magnetic sleeve; 501, limiting ring; 6, armature; 601, sleeve hole; 602, oil drain hole; 7, sealing gasket; 8, spring; 9, electromagnetic coil. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0023] As shown in the attached Figure 1 to the attached Figure 6 figures:
[0024] An electromagnetic device for a shock absorber includes a magnetic housing 1. A magnetic sleeve 5 is fixedly sleeved inside the magnetic housing 1. An O-ring 4 is sleeved on the outer wall of the magnetic sleeve 5, and the O-ring 4 is in contact with the inner wall of the magnetic housing 1. A magnetic washer 2 is fixedly sleeved at one end of the magnetic sleeve 5. A push rod 3 is slidably sleeved inside the magnetic washer 2. The magnetic housing 1 and the magnetic sleeve 5 are fixedly sleeved by an interference fit method. The magnetic washer 2 and the magnetic sleeve 5 are fixedly sleeved by an interference fit method. An armature 6 is slidably sleeved inside the other end of the magnetic sleeve 5. A sleeve hole 601 is formed in the middle of the armature 6. The other end of the push rod 3 extends into the sleeve hole 601. A spring 8 is sleeved on the outer wall of the push rod 3. The spring 8 is located between the armature 6 and the magnetic washer 2. An electromagnetic coil 9 is sleeved on the inner wall of the magnetic housing 1. The electromagnetic coil 9 is located between the magnetic housing 1 and the magnetic sleeve 5.
[0025] In the above technical solution, the right side between the magnetic housing 1 and the magnetic sleeve 5 forms an electromagnetic cavity for installing the electromagnetic coil 9. The push rod 3 and the armature 6 form an armature assembly. When the electromagnetic part of the electromagnetic device is energized with the expected current, the armature assembly is attracted by the electromagnetic force. The armature assembly moves inside the cavity of the magnetic sleeve 5 and transmits the electromagnetic force outside the electromagnetic part. At the same time, the spring 8 cooperates with the armature 6 so that the armature 6 is affected by the elastic force of the spring 8.
[0026] As shown in the attached Figure 3 to the attached Figure 5As shown, the magnetic housing 1 is in the shape of an annular sleeve. An annular protrusion 101 is provided on the inner wall of the magnetic housing 1. At the position of the annular protrusion 101 of the magnetic housing 1, a placement groove 102 and a limiting groove 103 are provided. The limiting groove 103 is located on the left side of the placement groove 102. The diameter of the limiting groove 103 is larger than the diameter of the placement groove 102. The placement groove 102 matches the O-ring 4. The O-ring 4 is placed in the cavity between the magnetic housing 1 and the magnetic sleeve 5. In the form of static sealing, the oil leakage of the hydraulic part is reduced.
[0027] As shown in the attached Figure 3 to the attached Figure 5 As shown, a limiting ring 501 is provided on the left outer wall of the magnetic sleeve 5. The magnetic sleeve 5 and the limiting ring 501 are integrally formed. The limiting ring 501 matches the limiting groove 103. The limiting ring 501 is located on the left side of the O-ring 4.
[0028] As shown in the attached Figure 3 As shown, the magnetic housing 1 and the magnetic sleeve 5 are fixedly sleeved by an interference fit method. The magnetic washer 2 and the magnetic sleeve 5 are fixedly sleeved by an interference fit method.
[0029] It is worth mentioning that at the same time, the electromagnetic part of this electromagnetic device has a simple process. Through the design of the magnetic housing 1, the O-ring 4, and the magnetic sleeve 5, the O-ring 4 is sleeved outside the magnetic sleeve 5. The assembly between the magnetic sleeve 5 and the magnetic housing 1 can be carried out by an interference fit method. Compared with the traditional welding processing technology, the process is simple, the cost is low, the production efficiency is high, and the production cycle is shortened. Secondly, changing from the traditional welding method to using the O-ring 4 for static sealing enables this electromagnetic device to meet the sealing requirements without welding, which can significantly reduce the generation of foreign matters and improve the reliability of the solenoid valve.
[0030] As shown in the attached Figure 1 As shown, the magnetic housing 1 is integrally formed. An external thread is provided on the outer wall of the magnetic housing 1 away from the magnetic sleeve 5. The external thread on the outer wall of the magnetic housing 1 can be fixedly installed with this electromagnetic device by a threaded connection method.
[0031] As shown in the attached Figure 3 As shown, a sealing gasket 7 is sleeved on the outer wall of the push rod 3. A clamping groove is provided on the right side of the magnetic washer 2. The sealing gasket 7 is located in the clamping groove on the right side of the magnetic washer 2. One end of the spring 8 contacts the outer wall of the armature 6, and the other end of the spring 8 contacts the outer wall of the sealing gasket 7. Through the design of the sealing gasket 7, the sealing performance between the magnetic washer 2 and the push rod 3 is improved, and the oil leakage of the hydraulic part is reduced.
[0032] As shown in the attached Figure 6 As shown, an oil drain hole 602 is provided on the outer wall of the armature 6. The oil drain hole 602 is at least one, and the oil drain hole 602 is used to ensure the oil flow.
[0033] Specific usage mode and function of this embodiment:
[0034] When the present utility model is in use, an electromagnetic cavity is formed on the right side between the magnetic housing 1 and the magnetic sleeve 5. The electromagnetic cavity is used to install the electromagnetic coil 9. The push rod 3 and the armature 6 form an armature assembly. When the electromagnetic part of the electromagnetic device is energized with the expected current, the armature assembly is attracted by the electromagnetic force. The armature assembly moves inside the cavity of the magnetic sleeve 5 and transmits the electromagnetic force outside the electromagnetic part. At the same time, the spring 8 cooperates with the armature 6 so that the armature 6 is affected by the elastic force of the spring 8;
[0035] The manufacturing process of the electromagnetic part of this electromagnetic device is simple. Through the design of the magnetic housing 1, the O-ring 4, and the magnetic sleeve 5, the O-ring 4 is sleeved outside the magnetic sleeve 5, and the magnetic sleeve 5 and the magnetic housing 1 can be assembled by an interference fit method. Compared with the traditional welding process, the process is simple, the cost is low, the production efficiency is high, and the production cycle is shortened. Secondly, the traditional welding method is changed to use the O-ring 4 for static sealing, so that the electromagnetic device can meet the sealing requirements without welding, which can significantly reduce the generation of foreign matters and improve the reliability of the solenoid valve.
[0036] Please refer to the above structure and process Figures 1-6 .
[0037] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.
Claims
1. An electromagnetic device for a vibration damper, comprising a magnetic housing (1), characterized in that: The magnetic shell (1) is fixedly sleeved with a magnetic sleeve (5), the outer wall of the magnetic sleeve (5) is sleeved with an O-ring (4), the O-ring (4) is in contact with the inner wall of the magnetic shell (1), one end of the magnetic sleeve (5) is fixedly sleeved with a magnetic gasket (2), the inside of the magnetic gasket (2) is slidably sleeved with a push rod (3), the other end of the magnetic sleeve (5) is slidably sleeved with an armature (6), a sleeve hole (601) is opened in the middle of the armature (6), the other end of the push rod (3) extends into the sleeve hole (601), the outer wall of the push rod (3) is sleeved with a spring (8), the spring (8) is located between the armature (6) and the magnetic gasket (2), the inner wall of the magnetic shell (1) is sleeved with an electromagnetic coil (9), the electromagnetic coil (9) is located between the magnetic shell (1) and the magnetic sleeve (5).
2. The electromagnetic device for a vibration absorber according to claim 1, characterized in that: The magnetic shell (1) is in the shape of an annular sleeve. The inner wall of the magnetic shell (1) is provided with an annular protrusion (101). The magnetic shell (1) is provided with a placement groove (102) and a limiting groove (103) at the annular protrusion (101). The limiting groove (103) is located on the left side of the placement groove (102). The diameter of the limiting groove (103) is larger than the diameter of the placement groove (102). The placement groove (102) matches the O-ring (4).
3. The electromagnetic device for a vibration absorber according to claim 2, characterized in that: A limit ring (501) is provided on the left outer wall of the magnetic sleeve (5); the magnetic sleeve (5) and the limit ring (501) are integrally formed; the limit ring (501) matches the limit groove (103); and the limit ring (501) is located on the left side of the O-ring (4).
4. The electromagnetic device for a vibration absorber according to claim 2, characterized in that: The magnetic shell (1) and the magnetic sleeve (5) are fixedly sleeved by means of an interference fit, and the magnetic gasket (2) and the magnetic sleeve (5) are fixedly sleeved by means of an interference fit.
5. The electromagnetic device for a vibration absorber according to claim 2, characterized in that: The magnetic shell (1) is integrally formed, and an outer wall of the magnetic shell (1) on a side away from the magnetic sleeve (5) is provided with an external thread.
6. The electromagnetic device for a vibration absorber according to claim 1, characterized in that: The outer wall of the push rod (3) is sleeved with a sealing gasket (7), the right side of the magnetic gasket (2) is provided with a slot, the sealing gasket (7) is located in the slot on the right side of the magnetic gasket (2), one end of the spring (8) contacts the outer wall of the armature (6), and the other end of the spring (8) contacts the outer wall of the sealing gasket (7).
7. The electromagnetic device for a vibration absorber according to claim 1, characterized in that: An oil drain hole (602) is provided on the outer wall of the armature (6), and there is at least one oil drain hole (602).