Air spring magnetorheological damper system sealing structure and vehicle

Abstract

The utility model belongs to the technical field of air springs, and particularly discloses an air spring magneto-rheological shock absorber system sealing structure and a vehicle, the air spring magneto-rheological shock absorber system sealing structure comprises a shell, one end of the shell is provided with a buffer piece, and a wire harness assembly penetrates through the shell; the pressing block assembly is arranged in the shell; and the sealing piece is fixed in the shell through a pressing block assembly, and a sealed space is formed among the sealing piece, the shell, the buffering piece and the wire harness assembly. By means of the pressing block assembly and the sealing piece, high-pressure gas on the side of the air spring can be sealed in the shell through the effect of the sealing piece, an independent sealing space is formed, and therefore the electromagnetic valve wiring harness of the magnetorheological damper penetrates out of the middle of the air spring, and even if the high-pressure gas leaks, the electromagnetic valve wiring harness can be prevented from being damaged. And the air spring magnetorheological damper can be sealed in the formed sealed space, so that the sealing performance of the air spring magnetorheological damper system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field especially is related to a kind of air spring magneto-rheological damper system sealing structure and vehicle. BACKGROUND

[0002] Air spring is usually used with electric control damper, and electric control damper needs to be electrically connected with wire harness at the end of piston rod, this part of connecting mechanism cannot bear high pressure gas, and in the process of vehicle driving, the end of piston rod will move up and down relative to air spring, which requires the part of air bag and piston rod to provide a movable high-pressure sealing structure.

[0003] In the prior art, the sealing of air spring and ordinary damper mainly relies on O-shaped sealing ring and gland, which seals the solid piston rod into the air spring. For shock absorber with wire harness, the sealing performance of the traditional sealing structure is poor because the wire harness needs to pass through the shell, and high-pressure gas leakage is likely to occur. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an air spring magneto-rheological damper system sealing structure and vehicle, which solves the problem of insufficient sealing performance of the air spring-shock absorber system with wire harness in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides an air spring magneto-rheological damper system sealing structure for sealing the wire harness assembly of shock absorber, the wire harness assembly includes a piston rod and a wire harness body, and the wire harness body is arranged in the piston rod, characterized in that the air spring magneto-rheological damper system sealing structure comprises:

[0006] A shell is provided with a buffer at one end, and the wire harness assembly is arranged through the shell;

[0007] A pressing block assembly is arranged in the shell;

[0008] A sealing element is fixed in the shell by the pressing block assembly, and a sealing space is formed between the sealing element, shell, buffer and wire harness assembly.

[0009] Optionally, the pressing block assembly includes a first pressing block, a second pressing block, a third pressing block and a middle framework, the first pressing block is sleeved on the piston rod and is pressed on the shaft shoulder of the piston rod, the middle framework is sleeved on the piston rod and abuts against the first pressing block, the second pressing block is sleeved on the middle framework, the third pressing block is arranged in the shell and is pressed, and the sealing element is arranged between the second pressing block and the third pressing block.

[0010] Optionally, the second pressing block is provided with a first pressing groove at one end close to the buffer, the third pressing block is provided with a second pressing groove at one end close to the buffer, and the sealing member is integrally provided with a first limiting part and a second limiting part, the first limiting part is arranged in the first pressing groove in a clamping mode, and the second limiting part is arranged in the second pressing groove in a clamping mode.

[0011] Optionally, the sealing member further has a convex part penetrating into a gap formed by the second pressing block and the third pressing block.

[0012] Optionally, a mounting groove is arranged between the middle frame and the first pressing block, and a sealing ring is arranged in the mounting groove.

[0013] Optionally, the sealing structure further comprises a glue applying assembly, the glue applying assembly comprises a fixing sleeve, a glue applying block and a supporting block, the fixing sleeve is sleeved in the shell, the supporting block is sleeved on the piston rod, the supporting block has an inner edge part and an outer edge part, the glue applying block is arranged on the outer edge part of the supporting block and abuts against an inner wall of the fixing sleeve, and the middle frame and the second pressing block abut against the inner edge part of the supporting block.

[0014] Optionally, the shell is provided with a snap ring for fixing the glue applying assembly, and the snap ring abuts against the fixing sleeve.

[0015] Optionally, the fixing sleeve is in interference fit with the shell.

[0016] Optionally, the piston rod is provided with a fastener, and the fastener can be used to press the supporting block.

[0017] The utility model also provides a vehicle, its characterized in that: including above-mentioned air spring magneto rheological damper system sealing structure.

[0018] As described above, the utility model discloses an air spring magneto rheological damper system sealing structure and vehicle have the following beneficial effects:

[0019] (1) compared with prior art, the utility model discloses a pressing block subassembly and sealing member are set up, can be sealed to the high pressure gas of air spring side in the shell interior through the effect of sealing member, formed a independent sealed space, therefore the high pressure gas will be sealed in the sealed space formed to the magnetic rheological damper solenoid valve wire harness from the air spring middle, the sealing performance of air spring magneto rheological damper system is improved.

[0020] (2) compared with prior art, for the air spring system with wire harness to come out of the shell, the utility model discloses a sealing member and the sealed space formed in the inside are set up, guarantee the sealing performance inside air spring system, avoid the generation of leakage. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A cross-sectional view of an embodiment of the present application is shown.

[0022] Figure 2 An enlarged view of A in an embodiment of the present application is shown.

[0023] Explanation of reference numerals:

[0024] Housing 1, buffer 2, piston rod 3, wire harness body 4, air spring 5, first pressing block 6, middle framework 7, second pressing block 8, first pressing groove 801, third pressing block 9, second pressing groove 901, sealing member 10, first limiting portion 1001, protruding portion 1002, second limiting portion 1003, sealing ring 11, sealing space 12, fixing sleeve 13, top glue block 14, support block 15, clasp ring 16, fastener 17. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application.

[0026] It should be noted that the drawings provided in the embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component in actual implementation can be changed arbitrarily, and the layout pattern of the components can also be more complex. The structure, proportion, size, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification for those skilled in the art, and do not limit the conditions under which the present application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear understanding of the description, not to limit the scope in which the present application can be implemented, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope in which the present application can be implemented.

[0027] As shown in Figure 1 and Figure 2 , the present application provides an air spring magnetorheological shock absorber system sealing structure and a vehicle.

[0028] In an exemplary embodiment, the air-spring magnetorheological damper system sealing structure is mainly used to seal the wiring harness assembly of the damper. The wiring harness assembly includes a piston rod 3 and a wiring harness body 4, with the wiring harness body 4 disposed within the piston rod 3. The air-spring magnetorheological damper system sealing structure includes:

[0029] Housing 1, with a buffer 2 at one end of housing 1, and a wiring harness assembly passing through housing 1;

[0030] The pressure block assembly is disposed within the housing 1;

[0031] The seal 10 is fixed inside the housing 1 by the pressure block assembly, and a sealing space 12 is formed between the seal 10, the housing 1, the buffer 2 and the wire harness assembly.

[0032] In this embodiment, by using the pressure block assembly and the sealing element 10, the high-pressure gas on the air spring side can be sealed inside the housing 1 through the action of the sealing element 10, forming an independent sealed space 12. Therefore, the magnetorheological damper solenoid valve harness passes through the middle of the air spring 5, and the high-pressure gas will be sealed in the formed sealed space 12, thereby improving the sealing performance of the air spring 5 magnetorheological damper system.

[0033] In an exemplary embodiment, the pressure block assembly includes a first pressure block 6, a second pressure block 8, a third pressure block 9, and a central frame 7. The first pressure block 6 is sleeved on the piston rod 3 and pressed against the shoulder of the piston rod 3. The central frame 7 is sleeved on the piston rod 3 and abuts against the first pressure block 6. The second pressure block 8 is sleeved on the central frame 7. The third pressure block 9 is pressed tightly inside the housing 1. A sealing member 10 is disposed between the second pressure block 8 and the third pressure block 9.

[0034] In this embodiment, the sealing element 10 can be fixed by the pressure block assembly composed of three pressure blocks, so that the sealing element 10 spans the high-pressure gas leakage channel, and the high-pressure gas is blocked by the sealing element 10 to prevent high-pressure gas leakage and ensure the sealing performance of the air spring 5 system.

[0035] For example, in this embodiment, the piston rod 3 has multiple shoulders due to its shape characteristics. The first pressure block 6 can be installed on one of the shoulders, which can provide a good installation environment for the first pressure block 6. The end face of the first pressure block 6 that mates with the shoulder is flat, so that the first pressure block 6 can firmly abut against the shoulder of the piston rod 3.

[0036] For example, such as Figure 2 As shown, in this embodiment, the first pressing block 6 has a step on the side away from the shoulder where it is installed, along its axial direction. The end of the middle frame 7 abuts against the step. During installation, the middle frame 7 firmly presses the first pressing block 6 against the shoulder of the piston rod 3.

[0037] Exemplarily, the middle frame 7 is provided with a mounting groove near one end of the first pressing block 6, and a sealing ring 11 is arranged in the mounting groove. When the middle frame 7 is sleeved on the piston rod 3 and abuts against the first pressing block 6, the sealing ring 11 is also sleeved on the piston rod 3, so that the middle frame 7 and the piston rod 3 are sealed, and the air tightness of the air spring 5 system is ensured.

[0038] It is worth noting that, in order to ensure the air tightness between the piston rod 3 and the middle frame 7, multiple sealing rings 11 can be arranged between the middle frame 7 and the piston rod 3, so as to avoid leakage of high-pressure gas from the gap between the piston rod 3 and the middle frame 7.

[0039] In an exemplary embodiment, the second pressing block 8 is provided with a first pressing groove 801 near one end of the buffer 2, the third pressing block 9 is provided with a second pressing groove 901 near one end of the buffer 2, and the sealing member 10 is integrally formed with a first limiting portion 1001 and a second limiting portion 1003. The first limiting portion 1001 is snap-fitted in the first pressing groove 801, and the second limiting portion 1003 is snap-fitted in the second pressing groove 901.

[0040] In this embodiment, the fixing mode of the sealing member 10 adopts groove space snap-fitting. In the air spring 5 system, high-pressure air enters the gap between the shell 1 and the piston rod 3 after pressing the buffer 2. Therefore, the sealing member 10 blocks the path of the gap to achieve sealing. By fixing the sealing member 10 along the radial direction of the piston rod 3, the high-pressure air cannot leak from the inside of the shell 1.

[0041] Exemplarily, in this embodiment, the part of the sealing member 10 that needs to be snap-fitted with the first pressing groove 801 and the second pressing groove 901 is enlarged to form the first limiting portion 1001 on the inner side and the second limiting portion 1003 on the outer side. When installing, the first limiting portion 1001 is snap-fitted into the first pressing groove 801, and the second limiting portion 1003 is snap-fitted into the second pressing groove 901. The sealing member 10 is firmly fixed by the shapes of the second pressing block 8 and the third pressing block 9, thereby improving the fixing effect of the sealing member 10.

[0042] Exemplarily, in this embodiment, the sealing member 10 is a rubber member, which has good air tightness and certain ductility, and high toughness, and is not easy to be damaged when being snap-fitted into the first pressing groove 801 and the second pressing groove 901.

[0043] Exemplarily, the sealing member 10 further has a protrusion 1002 penetrating into the gap formed between the second pressing block 8 and the third pressing block 9. In the embodiment, the third pressing block 9 is fixed on the boss inside the shell 1. Since there is a gap between the second pressing block 8 and the third pressing block 9, the protrusion 1002 arranged can seal the gap of the stroke. The protrusion 1002 in the embodiment is U-shaped, which penetrates into the gap. The arrangement of the protrusion 1002 can make the sealing member 10 more flexible and stronger in strength when bearing the pressure of high-pressure gas. Meanwhile, if the second pressing block 8 and the third pressing block 9 have slight movement due to assembly or size error, the protrusion 1002 can compensate for the movement, so that the protrusion 1002 tightly abuts against the outer end surface of the second pressing block 8 and the third pressing block 9, and the air spring 5 system air tightness is improved.

[0044] In an exemplary embodiment, the utility model further includes a top glue assembly, the top glue assembly includes fixed sleeve 13, top glue block 14 and support block 15, fixed sleeve 13 is in the shell 1, support block 15 is set on the piston rod 3, support block 15 has inner edge and outer edge, top glue block 14 is arranged on the outer edge and abuts on the inner wall of fixed sleeve 13, the end surface of the second pressing block 8 away from the buffer 2 abuts on the inner edge of the middle skeleton 7.

[0045] Meanwhile, the shell 1 is provided with a snap ring 16 for fixing the top glue assembly, and the snap ring 16 abuts against the fixed sleeve 13.

[0046] In the embodiment, the top glue assembly is mainly arranged between the snap ring 16 and the third pressing block 9, which is mainly used for abutting the third pressing block 9 against the boss inside the shell 1, and simultaneously pressing the second pressing block 8, the middle skeleton 7 and the first pressing block 6 to fix the pressing block assembly.

[0047] Exemplarily, the fixed sleeve 13 is in interference fit with the shell 1. After the top glue assembly is installed inside the shell 1, since the fixed sleeve 13 is in interference fit with the shell 1, high-pressure air cannot leak from the gap between the fixed sleeve 13 and the inner wall of the shell 1, and simultaneously the third pressing block 9 can be firmly abutted against the boss inside the shell 1 when the fixed sleeve 13 is installed.

[0048] Exemplarily, the piston rod 3 is provided with a fastener 17, which can be used to press the support block 15. The support block 15 can be abutted by the fastener 17 arranged, so as to avoid the movement of the support block 15. In the embodiment, the fastener 17 adopts a locking nut, which can be threadedly connected with the piston rod 3. After installation, the end surface of the locking nut abuts against the support block 15.

[0049] It is worth mentioning that, in the embodiment, after the top gluing assembly is installed, the support block 15 in the top gluing assembly synchronously presses the third pressing block 9 and the middle framework 7, so that the middle framework 7 is firmly pressed against the first pressing block 6, and the second pressing block 8 clamps the sealing element 10, fixes the first limiting part 1001 in the first pressing groove 801, and the third pressing block 9 clamps the sealing element 10, and fixes the second limiting part 1003 in the second pressing groove 901.

[0050] It is also worth mentioning that the clamping ring 16 in the embodiment can limit and fix the fixing sleeve 13, so that the entire top gluing assembly is firmly fixed in the shell 1.

[0051] The utility model also provides a kind of vehicle, it includes the sealing structure of air spring magnetorheological shock absorber system described above.

[0052] As described above, the utility model is provided with the pressing block assembly and the sealing element 10, the high-pressure gas on the side of air spring in the shell 1 is sealed by the sealing element 10, an independent sealing space 12 is formed, so that the magnetorheological shock absorber solenoid valve wire harness is worn from the middle of air spring 5, high-pressure gas is sealed in the sealing space 12 formed, and the sealing performance of air spring 5 magnetorheological shock absorber system is improved.

[0053] The above embodiment is only illustrative of the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A sealing structure for an air-spring magnetorheological damper system, used to seal the wiring harness assembly of the damper, the wiring harness assembly comprising a piston rod and a wiring harness body, the wiring harness body being disposed within the piston rod, characterized in that, The air spring magnetorheological damper system sealing structure comprises: A shell, one end of the shell being provided with a buffer, the wire harness assembly being arranged through the shell; A pressing block assembly arranged in the shell; A sealing member fixed in the shell by the pressing block assembly, a sealing space being formed between the sealing member, the shell, the buffer and the wire harness assembly.

2. The air spring magnetorheological damper system seal structure of claim 1, wherein: The pressing block assembly comprises a first pressing block, a second pressing block, a third pressing block and a middle skeleton, the first pressing block being sleeved on the piston rod and being pressed against the shaft shoulder of the piston rod, the middle skeleton being sleeved on the piston rod and abutting against the first pressing block, the second pressing block being sleeved on the middle skeleton, and the third pressing block being arranged in the shell in a pressed manner, the sealing member being arranged between the second pressing block and the third pressing block.

3. The air spring magnetorheological damper system seal structure of claim 2, wherein: The second pressing block is provided with a first pressing groove at one end close to the buffer, the third pressing block is provided with a second pressing groove at one end close to the buffer, the sealing member is integrally provided with a first limiting portion and a second limiting portion, the first limiting portion is arranged in the first pressing groove in a clamping manner, and the second limiting portion is arranged in the second pressing groove in a clamping manner.

4. The air spring magnetorheological damper system seal structure of claim 3, wherein: The sealing member further has a convex portion penetrating into the gap formed between the second pressing block and the third pressing block.

5. The air spring magnetorheological damper system seal structure of claim 2, wherein: The middle skeleton is provided with a mounting groove between the first pressing block, and the mounting groove is provided with a sealing ring.

6. The air spring magnetorheological damper system seal structure of claim 2, wherein: Further comprising a top glue assembly, the top glue assembly comprising a fixing sleeve, a top glue block and a support block, the fixing sleeve being sleeved in the shell, the support block being sleeved on the piston rod, the support block having an inner edge portion and an outer edge portion, the top glue block being arranged on the outer edge portion of the support block and abutting against the inner wall of the fixing sleeve, and the end face of the middle skeleton and the second pressing block away from the buffer abutting against the inner edge portion of the support block.

7. The air spring magnetorheological damper system seal structure of claim 6, wherein: The shell is provided with a snap ring for fixing the top glue assembly, and the snap ring abuts against the fixing sleeve.

8. The air spring magnetorheological damper system seal structure of claim 6, wherein: The fixing sleeve is in interference fit with the shell.

9. The air spring magnetorheological damper system seal structure of claim 6, wherein: The piston rod is provided with a fastener, and the fastener can be used to press the support block.

10. A vehicle characterized by: The air spring magnetorheological damper system sealing structure comprises any one of claims 1-9.

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