Electromagnetic shock absorber insulating shell with good sealing performance

Abstract

The utility model relates to the technical field of vibration damping devices, and discloses an electromagnetic vibration damper insulating shell with good sealing performance, which comprises an insulating shell arranged outside a vibration damper body, two ends of the vibration damper body are connected with a fixed shaft body and a telescopic shaft body, the insulating shell comprises a bottom shell and a top shell, the bottom shell is sleeved with a bottom shell of the shock absorber body, the top shell is sleeved with a top shell of the shock absorber body, shaft holes are formed in the ends, away from each other, of the bottom shell and the top shell in a penetrating mode, and the two shaft holes are in sliding connection with the fixed shaft body and the telescopic shaft body correspondingly. According to the electromagnetic shock absorber insulating shell with the good sealing performance, the electromagnetic shock absorber body is sleeved with the insulating shell body made of fiber reinforced plastics, external electromagnetic interference can be blocked, the interference influence of external electromagnetism on electromagnetic induction of the electromagnetic shock absorber is avoided, and the electromagnetic shock absorber is more stable in use.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction devices, in particular to an insulating shell of an electromagnetic vibration reducer with good sealing performance. Background Art

[0002] Electromagnetic shock absorbers, also known as magnetorheological fluid shock absorbers, are intelligent shock absorbing devices based on advanced material technology and electronic control technology. Its working principle is based on the characteristics of magnetorheological fluid, which is a suspension containing tiny magnetic particles; in the absence of an external magnetic field, these particles are randomly distributed, allowing the liquid to flow freely, but when a magnetic field is applied, these particles will be arranged along the direction of the magnetic field to form a fibrous structure, thereby rapidly increasing the viscosity of the liquid and reducing its fluidity; electromagnetic shock absorbers replace traditional shock springs, making the car's driving more stable. Through the electronic control system, according to the vehicle's driving conditions and road information (collected by sensors), the electromagnetic coil will be energized in time to generate a magnetic field, change the fluid properties of the magnetorheological fluid, and then instantly adjust the damping force of the shock absorber; this adjustment can be completed at the millisecond level, allowing the electromagnetic shock absorber to quickly adapt to different road conditions and provide the best ride comfort and handling stability.

[0003] For example, the patent with announcement number CN204164239U announces an electromagnetic shock absorber, including a supporting sleeve, an insulating sleeve, an upper electromagnet, a lower electromagnet, an upper electrode sheet, a lower electrode sheet and a connecting rod; the insulating sleeve is tightly arranged inside the supporting sleeve, and a rear end cover seal is provided at the rear end of the supporting sleeve, and the lower electromagnet is located inside the insulating sleeve and fixed on the inner side of the rear end cover; the upper electrode sheet is arranged on one side of the inner wall of the insulating sleeve, and the lower electrode sheet is arranged on the side of the inner wall of the insulating sleeve opposite to the position of the upper electrode sheet, and is arranged alternately with the upper electrode sheet; the upper electromagnet and the insulating sleeve are slidably matched, and during the sliding process, the side of the upper electromagnet is in contact and conduction with the upper electrode sheet or the lower electrode sheet, and a connecting rod is provided on the upper electromagnet that passes through the front end of the supporting sleeve, which solves the problem that the damping value of ordinary shock absorbers is difficult to match and difficult to design, and there will be no oil leakage, abnormal noise, etc.

[0004] However, the electromagnetic shock absorber in the above technology still has the following problems:

[0005] When the above-mentioned electromagnetic shock absorber is performing vibration reduction operation, it is necessary to energize the electromagnetic coil through the electronic control system so that the electromagnetic coil generates a magnetic field, and then the three-dimensional properties of the internal magnetorheological fluid are changed through the generated magnetic field, thereby achieving the electromagnetic shock absorption effect. In the entire shock absorption process, the magnetic field generated by the electromagnetic coil is crucial. Once it is interfered with by external electromagnetic interference in this process, the shock absorption effect will be reduced at the least, and the electromagnetic shock absorption may fail at the worst, which will then cause the electromagnetic shock absorber to be damaged by collision during the bumpy process of the car, increasing the cost of repair and replacement. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides an electromagnetic vibration absorber insulating shell with good sealing performance, such as protecting the electronic components inside the vibration absorber from external electromagnetic interference, reducing possible damage to the electromagnetic vibration absorber, and improving the use stability of the electromagnetic vibration absorber.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating shell of an electromagnetic shock absorber with good sealing performance, comprising an insulating shell installed on the outside of the shock absorber body, a fixed shaft body and a telescopic shaft body are connected to both ends of the shock absorber body, the insulating shell comprises a bottom shell and a top shell, the bottom shell is sleeved with the bottom shell of the shock absorber body, the top shell is sleeved with the top shell of the shock absorber body, and axial holes are penetrated through the ends of the bottom shell and the top shell that are away from each other, and the two axial holes are respectively slidably connected to the fixed shaft body and the telescopic shaft body.

[0008] Furthermore, the inner wall of the top shell near one end of the bottom shell is fixedly connected with a threaded thread, the outer wall of the bottom shell near one end of the top shell is provided with a threaded groove, and the top shell and the bottom shell are threadedly connected through the threaded thread and the threaded groove.

[0009] Furthermore, inner walls of the bottom shell and the top shell that are away from each other are both connected with extrusion rings, and adjacent sides of the two extrusion rings are respectively against the bottom and top shells of the shock absorber body.

[0010] Furthermore, the inner ring apertures of the two extrusion rings are both larger than the diameters of the fixed shaft body and the telescopic shaft body.

[0011] Furthermore, an annular oil cavity is formed on the inner wall of the shaft hole.

[0012] Furthermore, an oil filling hole is formed through one side of the annular oil cavity facing outward, and a sealing bolt is threadedly connected to the inner wall of the oil filling hole.

[0013] Furthermore, the extrusion ring is made of elastic sponge.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] This kind of electromagnetic vibration absorber insulating shell with good sealing performance, by using an insulating shell made of fiber reinforced plastic and sleeved on the outside of the electromagnetic vibration absorber body, can block external electromagnetic interference, avoid external electromagnetic interference on the electromagnetic induction of the electromagnetic vibration absorber, make the use of the electromagnetic vibration absorber more stable, and at the same time block the electromagnetic induction inside the electromagnetic vibration absorber on the inside, thereby avoiding the electromagnetic interference generated inside the electromagnetic vibration absorber to the normal operation of the outer sensor. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 Based on Figure 2 Exploded schematic diagram of the connection structure;

[0019] Figure 4 This is a schematic diagram of the front view of the structure section of the top shell of the utility model;

[0020] Figure 5 It is a front view structural cross-section diagram of the bottom shell of the utility model.

[0021] In the figure: 1. shock absorber body; 2. fixed shaft; 3. telescopic shaft; 4. bottom shell; 5. top shell; 6. threaded teeth; 7. extrusion ring; 8. sealing bolt; 201. shaft hole; 202. annular oil chamber; 203. oil filling hole; 401. threaded groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1 - Figure 5 An insulating shell of an electromagnetic shock absorber with good sealing performance includes an insulating shell installed on the outside of a shock absorber body 1, and a fixed shaft body 2 and a telescopic shaft body 3 are connected to both ends of the shock absorber body 1. The insulating shell includes a bottom shell 4 and a top shell 5. The bottom shell 4 is sleeved with the bottom shell of the shock absorber body 1, and the top shell 5 is sleeved with the top shell of the shock absorber body 1. The ends of the bottom shell 4 and the top shell 5 that are away from each other are penetrated with axial holes 201, and the two axial holes 201 are respectively slidably connected with the fixed shaft body 2 and the telescopic shaft body 3.

[0024] like Figure 1 - Figure 5 As shown, the electromagnetic vibration absorber insulating shell with good sealing performance in the utility model is similar to the existing electromagnetic vibration absorber insulating shell with good sealing performance, such as an electromagnetic vibration absorber disclosed in the patent with announcement number CN204164239U. The main improvement of the utility model is to isolate and seal the electromagnetic inside the electromagnetic vibration absorber from the outside, so as to avoid external electromagnetic interference to the normal operation inside the electromagnetic vibration absorber. Figures 1 to 5As shown, when the electromagnetic shock absorber insulating shell with good sealing performance in the utility model is in use, the top shell 5 and the bottom shell 4 are respectively sleeved on the upper and lower ends of the electromagnetic shock absorber body 1, so as to form a sealed insulating shell on the outside of the electromagnetic shock absorber body 1, wherein the insulating shell is made of fiber reinforced plastic, so that the insulating shell can seal and isolate the electromagnetic shock absorber body 1 from the outside, thereby avoiding electromagnetic interference of the electromagnetic shock absorber body 1 caused by the external electromagnetic, affecting the normal operation of the electromagnetic shock absorber body 1, and at the same time, it can avoid the electromagnetic damage of the electromagnetic shock absorber body 1 to the external electronic components such as sensors, thereby improving the use stability of the electromagnetic shock absorber body 1, and sealing rubber rings are padded between the two shaft holes 201 and the fixed shaft body 2 and the telescopic shaft body 3, so that the shock absorber body 1 can obtain a better sealing effect in the insulating shell.

[0025] like Figure 1 - Figure 5 As shown, the inner wall of the top shell 5 near one end of the bottom shell 4 is fixedly connected with a threaded thread 6, and the outer wall of the bottom shell 4 near one end of the top shell 5 is provided with a threaded groove 401, and the top shell 5 and the bottom shell 4 are threadedly connected through the threaded thread 6 and the threaded groove 401. Through the cooperation between the threaded thread 6 and the threaded groove 401, the top shell 5 and the bottom shell 4 can be connected and fixed to each other, which facilitates the installation or removal of the top shell 5 and the bottom shell 4 on the electromagnetic shock absorber body 1.

[0026] like Figure 2 - Figure 5 As shown, the inner walls of the bottom shell 4 and the top shell 5 that are away from each other are both connected with a squeeze ring 7, and the adjacent sides of the two squeeze rings 7 are respectively against the bottom and top shells of the shock absorber body 1. By arranging the squeeze rings 7 inside the bottom shell 4 and the top shell 5, when the bottom shell 4 and the top shell 5 are screwed together and approached, the upper and lower squeeze rings 7 are respectively against the upper and lower ends of the shock absorber body 1, so that the connection between the bottom shell 4 and the top shell 5 and the shock absorber body 1 is more stable and not easy to shake.

[0027] like Figure 2 - Figure 5 As shown, the inner ring apertures of the two extrusion rings 7 are larger than the diameters of the fixed shaft body 2 and the telescopic shaft body 3. Setting the inner ring aperture of the extrusion ring 7 larger than the diameters of the fixed shaft body 2 and the telescopic shaft body 3 can avoid friction between the extrusion ring 7 and the fixed shaft body 2 or the telescopic shaft body 3 after installation, thereby affecting the normal telescopic movement of the telescopic shaft body 3.

[0028] like Figure 2 - Figure 5As shown, the inner wall of the shaft hole 201 is provided with an annular oil chamber 202. By adding the annular oil chamber 202 in the shaft hole 201 and filling the annular oil chamber 202 with lubricating oil, the connection between the sealing rubber rings in the upper and lower shaft holes 201 and the fixed shaft body 2 and the telescopic shaft body 3 can be made smoother, reducing friction resistance.

[0029] like Figure 1 - Figure 5 As shown, an oil filling hole 203 is formed on one side of the annular oil chamber 202 facing outward, and a sealing bolt 8 is threadedly connected to the inner wall of the oil filling hole 203. The setting of the oil filling hole 203 facilitates the filling of lubricating oil into the annular oil chamber 202 through the oil filling hole 203 when the lubricating oil in the annular oil chamber 202 is reduced, and after the filling is completed, the oil filling hole 203 is blocked with the sealing bolt 8 to prevent the leakage of the lubricating oil.

[0030] like Figure 2 - Figure 5 As shown, the extrusion ring 7 is made of elastic sponge. When the bottom shell 4 and the top shell 5 are installed, the extrusion ring 7 made of elastic sponge can be compressed to make the bottom shell 4 and the top shell 5 more firmly installed. At the same time, the extrusion ring 7 made of elastic sponge can also play a shock-absorbing and buffering effect on the shock absorber body 1 to a certain extent.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. An insulating shell of an electromagnetic vibration absorber with good sealing performance, comprising an insulating shell installed outside a vibration absorber body (1), wherein both ends of the vibration absorber body (1) are connected to a fixed shaft body (2) and a telescopic shaft body (3), characterized in that: The insulating shell comprises a bottom shell (4) and a top shell (5); the bottom shell (4) is sleeved with the bottom shell of the shock absorber body (1); the top shell (5) is sleeved with the top shell of the shock absorber body (1); and axial holes (201) are penetrated through the ends of the bottom shell (4) and the top shell (5) that are away from each other. The two axial holes (201) are respectively slidably connected to the fixed shaft body (2) and the telescopic shaft body (3).

2. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 1, characterized in that: The inner wall of the top shell (5) close to one end of the bottom shell (4) is fixedly connected with a threaded thread (6), and the outer wall of the bottom shell (4) close to one end of the top shell (5) is provided with a threaded thread groove (401), and the top shell (5) and the bottom shell (4) are threadedly connected via the threaded thread (6) and the threaded thread groove (401).

3. An electromagnetic vibration absorber insulating housing with good sealing performance according to claim 1 or 2, characterized in that: The inner walls of the bottom shell (4) and the top shell (5) at one end away from each other are both connected with an extrusion ring (7), and the adjacent sides of the two extrusion rings (7) are respectively against the bottom and top shells of the shock absorber body (1).

4. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 3, characterized in that: The inner ring apertures of the two extrusion rings (7) are both larger than the diameters of the fixed shaft body (2) and the telescopic shaft body (3).

5. An electromagnetic vibration absorber insulating housing with good sealing performance according to claim 1, 2 or 4, characterized in that: An annular oil chamber (202) is formed on the inner wall of the shaft hole (201).

6. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 3, characterized in that: An annular oil chamber (202) is formed on the inner wall of the shaft hole (201).

7. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 5, characterized in that: An oil filling hole (203) is formed through the outward side of the annular oil cavity (202), and a sealing bolt (8) is threadedly connected to the inner wall of the oil filling hole (203).

8. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 6, characterized in that: An oil filling hole (203) is formed through the outward side of the annular oil cavity (202), and a sealing bolt (8) is threadedly connected to the inner wall of the oil filling hole (203).

9. The electromagnetic vibration absorber insulating housing with good sealing performance according to claim 3, characterized in that: The extrusion ring (7) is made of elastic sponge.

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