Shock absorber assembly and shock absorber assembly
By improving the structure of the rubber bushing and inner frame, ensuring the tight fit between the nut and the inner frame, the problem of abnormal noise of the vibration absorber caused by loose nuts is solved, and the stability and performance of the vibration absorber are improved.
Patent Information
- Application Number
- CN202421815083.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In existing shock absorbers, the end face of the nut cannot fit the end face of the inner frame of the rubber bushing assembly, causing the nut to loosen and causing abnormal noise from the shock absorber.
By improving the structure of the rubber bushing and inner skeleton, the upper end face of the inner skeleton extends axially to form a first neck. The rubber bushing covers the outer wall of the inner skeleton, revealing the upper end face of the first neck, the upper end face of the second neck is at least 0.3 mm lower than the upper end face of the first neck, and the lower end face of the nut is close to the upper end face of the first neck.
Make sure the nut is always tightened to the piston rod and fits closely with the inner frame to avoid loosening of the nut, ensure the vibration damper is working stably, and improve the quality and performance of the vibration damper.
Smart Images
Figure CN222859150U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbers, in particular to a shock absorber component and a shock absorber assembly. Background Art
[0002] The shock absorber includes a support, a rubber bushing assembly pressed into the support, a piston rod passing through the rubber bushing assembly, a nut screwed on the piston rod, etc. Among them, the rubber bushing assembly is used to provide suspension stiffness, and the rubber bushing can deform and absorb vibration as the piston rod moves; the nut is screwed on the piston rod, and ideally the end face of the nut fits the end face of the inner frame of the rubber bushing assembly to ensure a stable assembly.
[0003] However, in current shock absorbers, problems often occur, such as the end face of the nut failing to fit the end face of the inner frame of the rubber bushing assembly, the nut becoming loose, and other problems, resulting in abnormal noise during the operation of the shock absorber.
[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0005] In view of this, the utility model provides a shock absorber component and a shock absorber assembly, which improves the structure of the rubber bushing and the inner frame to avoid problems such as the nut being unable to fit tightly against the inner frame and the nut being loose due to interference from the rubber bushing, so that the nut is always tightened on the piston rod and always fits tightly against the inner frame, thereby ensuring stable operation of the shock absorber and improving the quality and performance of the shock absorber.
[0006] According to one aspect of the utility model, a shock absorber assembly is provided, comprising a support, a rubber bushing assembly pressed into the support, a piston rod passing through the rubber bushing assembly, and a nut screwed on the piston rod, wherein: the rubber bushing assembly comprises an inner skeleton and a rubber bushing, the inner surface of the upper end surface of the inner skeleton extends axially to form a first neck, the inner surface of the upper end surface of the rubber bushing extends axially to form a second neck, the middle part of the upper end surface of the rubber bushing is raised at intervals in the circumferential direction to form a raised portion, and the raised portion is spaced apart from the second neck; the rubber bushing covers the outer wall of the inner skeleton and exposes the upper end surface of the first neck, the upper end surface of the second neck is at least 0.3 mm lower than the upper end surface of the first neck, and the lower end surface of the nut is in close contact with the upper end surface of the first neck.
[0007] In some embodiments, an axially extending claw ring is provided on the edge of the lower end surface of the nut, and when the lower end surface of the nut is in close contact with the upper end surface of the first neck, the claw ring grips the end edge of the first neck.
[0008] In some embodiments, the axial extension distance of the claw ring is less than 0.3 mm.
[0009] In some embodiments, the upper end surface of the first neck is coated with an anti-rust coating.
[0010] In some embodiments, the anti-rust coating is a zinc-nickel alloy coating.
[0011] In some embodiments, the outer wall of the piston rod is provided with a shoulder, and the lower end surface of the inner skeleton is axially indented to form a step; the step abuts against the shoulder, and the shoulder is used to limit the movement of the step away from the nut.
[0012] In some embodiments, the protrusion is 7 mm to 10 mm away from the first neck in the radial direction.
[0013] According to another aspect of the utility model, a shock absorber assembly is provided, wherein the shock absorber assembly is configured with the shock absorber component as described in any of the above embodiments.
[0014] Compared with the prior art, the beneficial effects of the present invention include at least:
[0015] The upper end surface of the inner skeleton extends axially to form a first neck, and the rubber bushing covers the remaining outer wall portion of the irregularly shaped inner skeleton except the upper end surface of the first neck, so that the rubber bushing and the inner skeleton are firmly matched, and the inner skeleton interference sleeve is arranged outside the piston rod, thereby ensuring that the rubber bushing deforms with the movement of the piston rod, attenuating the vibration transmitted to the vehicle body by the ground, and improving driving comfort and stability.
[0016] The raised portion of the rubber bushing is used for interference fit with the end cover assembled on the top of the support member. During the operation of the shock absorber, the raised portion will deform to absorb vibration. The upper end surface of the rubber bushing extends axially to form a second neck, which is spaced from the raised portion of the rubber bushing, so that the deformation of the rubber bushing can avoid affecting the second neck, thereby avoiding affecting the fit between the inner frame and the nut.
[0017] The upper end surface of the second neck of the rubber bushing is lower than the upper end surface of the first neck of the inner frame, thereby ensuring that the lower end surface of the nut is in close contact with the upper end surface of the first neck when the nut is assembled; and, as used, the upper end surface of the second neck will not hit the lower end surface of the nut, thereby avoiding the problem of the nut gradually loosening due to the push of the rubber bushing, and further avoiding the problem of abnormal noise in the shock absorber caused by the loosening of the nut.
[0018] The utility model avoids direct or possible contact between the rubber bushing and the nut, thereby preventing the nut from being unable to fit tightly against the inner frame due to the interference of the rubber bushing and becoming loose with use. The nut is always tightened on the piston rod, and the lower end face of the nut is always tightly fitted against the upper end face of the inner frame, thereby ensuring stable operation of the shock absorber and improving the quality and performance of the shock absorber.
[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 A schematic structural diagram of a shock absorber assembly in an embodiment of the utility model is shown;
[0022] Figure 2 A schematic structural diagram of a rubber bushing assembly in an embodiment of the utility model is shown. DETAILED DESCRIPTION
[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.
[0024] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.
[0025] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or position relationship indicated by the terms "upper" and "lower" are based on the orientation or position relationship shown in the drawings. They are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, in the description of the present invention, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.
[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.
[0027] Figure 1 The structure of the shock absorber assembly in the embodiment of the utility model is schematically shown. Figure 2 The structure of the rubber bushing assembly in the embodiment of the utility model is schematically shown; Figure 1 and Figure 2 As shown, the shock absorber assembly provided by the embodiment of the utility model includes:
[0028] A support member 10, a rubber bushing assembly 20 pressed into the support member 10, a piston rod 30 passing through the rubber bushing assembly 20, and a nut 40 screwed onto the piston rod 30, wherein:
[0029] The rubber bushing assembly 20 includes an inner frame 21 and a rubber bushing 22. The inner surface of the upper end surface of the inner frame 21 extends along the axial direction "Z" to form a first neck 211. The inner surface of the upper end surface of the rubber bushing 22 extends along the axial direction "Z" to form a second neck 222. The middle part of the upper end surface of the rubber bushing 22 is raised at intervals in the circumferential direction to form a raised portion 223. The raised portion 223 is spaced apart from the second neck 222.
[0030] The rubber bushing 22 covers the outer wall of the inner frame 21 and exposes the upper end surface of the first neck 211. The upper end surface of the second neck 222 is lower than the upper end surface of the first neck 211, and the distance "S" between the upper end surface of the second neck 222 and the upper end surface of the first neck 211 is at least 0.3 mm. The lower end surface of the nut 40 is tightly attached to the upper end surface of the first neck 211.
[0031] The upper end surface of the inner skeleton 21 extends along the axial direction "Z" to form a first neck 211, and the rubber bushing 22 covers the remaining outer wall portion of the irregularly shaped inner skeleton 21 except the upper end surface of the first neck 211, so that the rubber bushing 22 and the inner skeleton 21 are firmly matched, and the inner skeleton 21 is interference fit outside the piston rod 30, thereby ensuring that the rubber bushing 22 deforms with the movement of the piston rod 30, attenuating the vibration transmitted to the vehicle body by the ground, and improving driving comfort and stability.
[0032] The raised portion 223 of the rubber bushing 22 is used for interference fit with the end cover 50 assembled on the top of the support 10. During the operation of the shock absorber, the raised portion 223 will deform to absorb vibration. The upper end surface of the rubber bushing 22 extends along the axial direction "Z" to form a second neck 222. The second neck 222 is spaced from the raised portion 223 of the rubber bushing 22, which can prevent the deformation of the rubber bushing 22 from affecting the second neck 222, thereby preventing the inner frame 21 from affecting the fit between the nut 40.
[0033] The upper end surface of the second neck 222 of the rubber bushing 22 is lower than the upper end surface of the first neck 211 of the inner frame 21, thereby ensuring that the lower end surface of the nut 40 is in close contact with the upper end surface of the first neck 211 when the nut 40 is assembled; and, as it is used, the upper end surface of the second neck 222 will not hit the lower end surface of the nut 40, thereby avoiding the problem of the nut 40 gradually loosening due to the push of the rubber bushing 22, and further avoiding the problem of abnormal noise of the shock absorber caused by the loosening of the nut 40.
[0034] The utility model avoids direct or possible contact between the rubber bushing 22 and the nut 40, thereby preventing the nut 40 from being unable to fit tightly against the inner frame 21 due to the interference of the rubber bushing 22 and becoming loose with use. The nut 40 is always tightened on the piston rod 30, and the lower end face of the nut 40 is always tightly fitted against the upper end face of the inner frame 21, thereby ensuring stable operation of the shock absorber and improving the quality and performance of the shock absorber.
[0035] In addition, during the manufacturing process, the upper end surface of the first neck 211 can be protected to prevent rubber impurities, spray agents, etc. from adhering to the upper end surface of the first neck 211, so that the upper end surface of the first neck 211 remains smooth and flat, and can thus fit tightly with the lower end surface of the nut 40 for a long time.
[0036] In some embodiments, a claw ring 400 extending axially in an "Z" direction is provided at the edge of the lower end surface of the nut 40 . When the lower end surface of the nut 40 is in close contact with the upper end surface of the first neck 211 , the claw ring 400 grips the end edge of the first neck 211 .
[0037] The claw ring 400 extends axially in the direction "Z" without affecting the screwing operation of the nut 40 toward the inner frame 21; when the nut 40 is screwed until its lower end face is close to the upper end face of the first neck 211, the claw ring 400 grasps the end edge of the first neck 211, so that the lower end face of the nut 40 remains tightly fitted with the upper end face of the first neck 211.
[0038] In some embodiments, the axial “Z” extension distance of the claw ring 400 is less than 0.3 mm to ensure that the claw ring 400 and the second neck 222 are spaced apart and do not interfere with each other.
[0039] Furthermore, in order to ensure that there is an appropriate distance between the claw ring 400 and the second neck 222, the distance "S" between the upper end surface of the second neck 222 and the upper end surface of the first neck 211 can be appropriately increased. For example, the distance "S" can be set to 0.5 mm. In this way, space is reserved for the claw ring 400. The axial "Z" extension distance of the claw ring 400 can be set to 0.2 mm, for example, to reserve a distance of 0.3 mm between the claw ring 400 and the second neck 222 to prevent the nut 40 from loosening as the second neck 222 contacts and pushes the claw ring 400.
[0040] In some embodiments, the upper end surface of the first neck 211 is coated with an anti-rust coating. The anti-rust coating keeps the upper end surface of the first neck 211 smooth and flat, so that the upper end surface of the first neck 211 always fits tightly with the lower end surface of the nut 40 during the operation of the shock absorber.
[0041] The anti-rust coating may be a zinc-nickel alloy coating, or an anti-rust coating of other suitable materials.
[0042] In some embodiments, the outer wall of the piston rod 30 is provided with a shoulder 300 , and the lower end surface of the inner skeleton 21 is axially "Z"-retracted to form a step 213 ; the step 213 abuts against the shoulder 300 , and the shoulder 300 is used to limit the movement of the step 213 away from the nut 40 .
[0043] The abutment between the step 213 and the shoulder 300 further ensures a tight fit between the inner frame 21 and the nut 40 .
[0044] In some embodiments, the distance "D" between the protrusion 223 and the first neck 211 in the radial direction is between 7 mm and 10 mm. In this way, the deformation of the rubber bushing 22 and interference with the nut 40 during the operation of the shock absorber can be effectively avoided.
[0045] In some embodiments, the rubber bushing assembly 20 further includes an outer frame 23 bonded to the outer ring of the rubber bushing 22; the rubber bushing assembly 20 is press-fitted into the cavity of the support 10 through the outer frame 23. The inner frame 21 can be made of aluminum alloy or steel, the outer frame 23 can be made of metal or plastic, and the rubber bushing 22 is made of natural rubber.
[0046] The embodiment of the utility model also provides a shock absorber assembly, which is configured with a shock absorber component as described in any of the above embodiments, and can avoid direct or possible contact between the rubber bushing 22 and the nut 40, so as to avoid the problem that the nut 40 cannot be tightly attached to the inner frame 21 due to the interference of the rubber bushing 22, and becomes loose with use, etc., so that the nut 40 is always tightened to the piston rod 30, and the lower end face of the nut 40 is always tightly attached to the upper end face of the inner frame 21, thereby ensuring the stable operation of the shock absorber and improving the quality and performance of the shock absorber.
[0047] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A shock absorber assembly, comprising a support, a rubber bushing assembly pressed into the support, a piston rod passing through the rubber bushing assembly, and a nut screwed onto the piston rod, characterized in that: The rubber bushing assembly comprises an inner frame and a rubber bushing, wherein the inner end surface of the inner frame extends axially to form a first neck portion, the inner end surface of the rubber bushing extends axially to form a second neck portion, and the middle portion of the upper end surface of the rubber bushing is raised at intervals in the circumferential direction to form a raised portion, and the raised portion is spaced apart from the second neck portion; The rubber bushing covers the outer wall of the inner frame and exposes the upper end surface of the first neck. The upper end surface of the second neck is at least 0.3 mm lower than the upper end surface of the first neck. The lower end surface of the nut is in close contact with the upper end surface of the first neck.
2. The shock absorber assembly according to claim 1, characterized in that The edge of the lower end surface of the nut is provided with an axially extending claw ring. When the lower end surface of the nut is in close contact with the upper end surface of the first neck, the claw ring grips the end edge of the first neck.
3. The shock absorber assembly according to claim 2, characterized in that The axial extension distance of the claw ring is less than 0.3 mm.
4. The shock absorber assembly according to claim 1, characterized in that The upper end surface of the first neck is coated with an anti-rust coating.
5. The shock absorber assembly according to claim 4, characterized in that The anti-rust coating is a zinc-nickel alloy coating.
6. The shock absorber assembly according to claim 1, wherein: The outer wall of the piston rod is provided with a shoulder, and the lower end surface of the inner frame is axially retracted to form a step; The step abuts against the shoulder, and the shoulder is used to limit the movement of the step away from the nut.
7. The shock absorber assembly according to claim 1, wherein: The raised portion is 7 mm to 10 mm away from the first neck in the radial direction.
8. A shock absorber assembly, characterized in that: The shock absorber assembly is equipped with a shock absorber component as described in any one of claims 1-7.