Shock absorber with adjustable length
By setting up an inlay groove in the threaded section of the shock absorber and using the clamping part of the clamping trigger to embed the positioning adjustment cylinder in the inlaying trigger, the shock absorber produces unusual sounds and sediment accumulation under long-term vibrations. The problem of thread rust has achieved stable length adjustment and improved shock absorption effect.
Patent Information
- Application Number
- CN202421235073.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing shock absorbers with adjustable length are prone to rotation relative to each other and the adjustment cylinder under long vibration, resulting in unusual sound problems. At the same time, splashing mud and sand accumulate in the thread during driving, causing the thread to rust, and fixing screws The ring is not easy to loosen, resulting in loss of length adjustment function.
By setting up an inlay groove in the threaded section of the pipe body and opening a through hole in the adjustment cylinder, the clamping part of the clamping trigger member is embedded in the inlay groove to position the adjustment cylinder to prevent it from moving axially along the threaded section. Problems of abnormal sound and loss of length adjustment function.
It effectively prevents the abnormal sound problem caused by long-term vibration, and avoids the thread rust caused by silt accumulation, so that the shock absorber can maintain the length adjustment function stably, improving the convenience of use and shock absorption effect.
Smart Images
Figure CN222458203U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a shock absorber, in particular to a shock absorber with adjustable length. Background Art
[0002] Vehicles, as means of transportation, travel on various roads, either running on asphalt roads or walking on muddy trails. Bumps are inevitable during driving. Therefore, the industry often installs shock absorbers on the vehicles to absorb the vibration caused by bumps during driving and improve the riding comfort of drivers and passengers.
[0003] There are many vehicle specifications, and shock absorbers of corresponding lengths need to be produced according to different vehicle specifications, which increases the production cost. Therefore, the industry has developed adjustable length shock absorbers. Among them, Taiwan Utility Model Patent No. 392609 announced an "Improved Vehicle Shock Absorber Body Adjustment Structure", which has a full-process threaded barrel with sufficient length downward from the shock absorber, and the socket is provided with an internal screw hole matching the threaded barrel, so that the socket and the spindle can be screwed to each other at different heights and positioned with a fixed screw ring.
[0004] Although the screw connection height between the socket and the spindle can be adjusted according to different vehicle specifications, it is inevitable that dirt and gravel will splash onto the shock absorber when the vehicle is driving. Since the shock absorber has a threaded barrel, dirt and gravel accumulate between the threads and accelerate the rust of the threads, making it difficult to loosen the fixing screw ring to adjust the screw connection height, causing inconvenience in use. There is also a slight gap between the threads. With the vibration during driving, the fixing screw ring and the spindle will rotate relative to each other, reducing the positioning effect of the fixing screw ring, causing the shock absorber to become loose and produce abnormal noise.
[0005] In view of this, how to solve the above problems is the primary issue that the present invention intends to solve. Utility Model Content
[0006] The main purpose of the utility model is to provide an adjustable length shock absorber, by separating the threaded section provided on the tube body by at least one embedding groove along the axial direction, and opening a through hole corresponding to the embedding groove in the adjusting cylinder, and by pivoting a clamping wrench pivotally provided outside the through hole through the through hole and tightening in the embedding groove, so that it cannot rotate relative to the tube body, thereby achieving the effect of positioning the adjusting cylinder, solving the problem of abnormal noise caused by relative rotation between the tube body and the adjusting cylinder due to long-term vibration, and also preventing the splashed sand from accumulating in the thread during driving, causing the thread to rust and unable to rotate the adjusting cylinder, and then losing the length adjustment function.
[0007] In order to achieve the above-mentioned purpose, the utility model provides an adjustable length shock absorber, which comprises:
[0008] A tube body, one end of which is threaded along an axial direction to form a thread segment, and the thread segment is divided along the axial direction by at least one embedded groove;
[0009] An adjusting cylinder is sleeved on the outer tube body and can be screwed with the tube body to different heights to adjust the length of the tube body extending outside the adjusting cylinder;
[0010] Among them, at least one through hole is provided on the circumferential side of the adjusting cylinder, and each of the through holes can rotate with the adjusting cylinder to be arranged opposite to the embedding groove. A fixing lever is pivotally provided outside each of the through holes, and the fixing lever has a fixing portion that can be embedded in the embedding groove and a force-applying portion for pulling. The fixing lever can pivot between a fixing position and a loosening position. When the fixing lever pivots to the fixing position, the fixing portion penetrates into the through hole and is embedded in the embedding groove to position the adjusting cylinder so that it cannot move axially along the threaded section. When the fixing lever pivots to the loosening position, the fixing portion disengages from the embedding groove to release the positioning of the adjusting cylinder.
[0011] Preferably, the threaded section of the tube body is partitioned along the axial direction by two symmetrically arranged embedding grooves, and two through holes are symmetrically provided on the circumference of the adjustment tube, and the two through holes can rotate with the adjustment tube to be arranged opposite to the two embedding grooves.
[0012] Preferably, the clamping part has a pivotally mounted mounting hole. When the clamping part is pivoted to the clamping position, a side of the clamping part facing the through hole is a pressing surface, and a first distance is provided between the pressing surface and the mounting hole. When the clamping part is pivoted to the loosening position, a side of the clamping part facing the through hole is a loosening surface, and a second distance is provided between the loosening surface and the mounting hole, and the first distance is greater than the second distance.
[0013] Preferably, the embedding groove has a flat bottom surface, and the depth of the embedding groove is greater than or equal to the thread height of the threaded segment, and the pressing surface of the clamping part is a plane. When the clamping part is pivoted to the clamping position, the pressing surface fits with the flat bottom surface of the embedding groove.
[0014] Preferably, the embedding groove has an arc bottom surface, and the maximum depth of the embedding groove is greater than or equal to the thread height of the thread segment, and the clamping surface of the clamping part is an arc surface. When the clamping part is pivoted to the clamping position, the clamping surface fits with the arc bottom surface of the embedding groove.
[0015] Preferably, the adjusting cylinder extends outward toward one end surface of the tube body to form a first annular protrusion, each of the through holes is arranged below the first annular protrusion, and two protruding portions protrude symmetrically on both sides of each through hole. The clamping plate is pivotally disposed between the two protruding portions and pivotally swung along the axial direction toward one side of the tube body to the clamping position, and the first annular protrusion is provided with at least one first groove for the force-applying portion to be clamped.
[0016] Preferably, the clamping plate is pivoted along the axial direction toward a side opposite to the tube body to the clamping position.
[0017] Preferably, the adjusting tube extends outwardly toward one end surface of the tube body to form a first annular protrusion, and the lower part of the first annular protrusion protrudes outward along the outer wall of the adjusting tube to form a second annular protrusion, and the through hole is provided between the first annular protrusion and the second annular protrusion, and the clamping plate is pivotally arranged between the first annular protrusion and the second annular protrusion and pivots along the radial direction of the adjusting tube, and the first annular protrusion and the second annular protrusion are both provided with a first groove and a second groove for accommodating the force-applying part.
[0018] Preferably, a mounting seat is provided at one end of the tube body relatively away from the adjusting cylinder, a limiting ring is threadedly arranged between the mounting seat and the adjusting cylinder, a spring body is provided on the tube body between the mounting seat and the limiting ring, one end of the spring body abuts against the mounting seat, and the other end abuts against the limiting ring.
[0019] Preferably, a shock-absorbing rod is installed at one end of the tube body relatively away from the adjusting cylinder, the end of the shock-absorbing rod has a pivot portion, the pivot portion has a pivot hole for pivotal installation, and the circumferential side of the end of the adjusting cylinder relatively away from the tube body has two symmetrically extending outwardly assembly portions, and the two assembly portions are arranged at intervals.
[0020] The above-mentioned objects and advantages of the present invention can be easily understood from the detailed description of the following selected embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a three-dimensional structural schematic diagram of the first embodiment of the utility model.
[0023] Figure 2 It is a schematic diagram of the partial structure of the radial section of the first embodiment of the utility model.
[0024] Figure 3 It is a structural schematic diagram of the first embodiment of the utility model, in which the clamping plate is located at the clamping position.
[0025] Figure 4 It is a structural schematic diagram of the fastening assembly in the first embodiment of the utility model in the loosened position.
[0026] Figure 5It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model.
[0027] Figure 6 It is a schematic diagram of the axial cross-section structure of the second embodiment of the utility model.
[0028] Figure 7 It is a three-dimensional structural schematic diagram of the third embodiment of the utility model.
[0029] Figure 8 It is a schematic diagram of the partial structure of the radial section of the third embodiment of the utility model.
[0030] Fig. 9 It is a schematic diagram of the radial cross-section structure of the third embodiment of the utility model.
[0031] Fig.10 It is a three-dimensional structural schematic diagram of the fourth embodiment of the utility model.
[0032] Among them, the tube body 1; the threaded section 11; the embedded groove 12; the flat bottom surface 121; the arc bottom surface 122; the adjusting tube 2; the first annular protrusion 21; the first groove 211; the through hole 22; the protruding portion 23; the second annular protrusion 24; the second groove 241; the assembly portion 25; the clamping plate 3; the clamping portion 31; the tightening surface 311; the loosening surface 312; the mounting hole 313; the force-applying portion 32; the mounting seat 4; the limiting ring 5; the spring body 6; the shock-absorbing rod 7; the pivot portion 71; the pivot hole 72; the depth D1; the screw thread height D2; the maximum depth D3; the first distance L1; the second distance L2; the clamping position P1; the loosening position P2. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0034] like Figures 1 to 5 FIG. 2 shows a first embodiment of the adjustable length shock absorber provided by the present invention, which includes a tube body 1 and an adjustment tube 2 .
[0035] like Figure 1As shown in FIG. 1 , one end of the tube body 1 is threaded along an axial direction to form a threaded section 11, and the threaded section 11 is interrupted by at least one embedded groove 12 along the axial direction. As shown in FIG. 2 , each embedded groove 12 has a flat bottom surface 121, and the depth D1 of the side of the embedded groove 12 adjacent to the threaded section 11 is greater than or equal to the thread height D2 of the threaded section 11. The adjusting tube 2 is sleeved on the outside of the tube body 1 and can be screwed to different heights with the tube body 1. Please refer to FIG. 1 and FIG. 3 , the adjusting tube 2 extends outwardly toward one end of the tube body 1 to form a first annular convex portion 21, and at least one through hole 22 is provided on the circumference thereof below the first annular convex portion 21, and each through hole 22 can rotate with the adjusting tube 2 to be arranged opposite to each embedded groove 12. In this embodiment, the thread segment 11 is divided along the axial direction by two symmetrically arranged embedding grooves 12 to form two discontinuous thread areas, and the depth D1 of each side of the embedding groove 12 adjacent to the thread segment 11 is equal to the thread height D2 of the thread segment 11, and two through holes 22 are symmetrically provided on the circumferential side of the adjusting cylinder 2, and the two through holes 22 can rotate with the adjusting cylinder 2 to be arranged opposite to the corresponding embedding grooves 12.
[0036] Please continue to read Figure 1 , two extensions 23 protrude symmetrically from both sides of each through hole 22, and a clamping plate 3 is pivotally disposed between the two extensions 23, and the clamping plate 3 can be pivoted between a clamping position P1 and a loosening position P2. The clamping plate 3 has a clamping portion 31 pivotally disposed between the two extensions 23 and a force-applying portion 32 extending from the end of the clamping portion 31. In detail, Figure 3 As shown, when the force-applying portion 32 is pushed to drive the clamping portion 31 to pivot to the clamping position P1, the clamping portion 31 passes through the through hole 22 and abuts against the embedded groove 12, thereby positioning the adjusting tube 2 so that it cannot rotate relative to the tube body 1. At this time, the side of the clamping portion 31 facing the through hole 22 is a pressing surface 311, and the pressing surface 311 is a plane that can fit with the flat bottom surface 121 of the embedded groove 12, thereby increasing the contact area between the clamping portion 31 and the embedded groove 12 and ensuring stable positioning. In this embodiment, the clamping plate 3 pivots along the axial direction and toward one side of the tube body 1 to the clamping position P1, and at this time, the force-applying portion 32 faces the first annular protrusion 21. In order to ensure that the clamping portion 31 is completely pressed against the embedded groove 12, the first annular protrusion 21 is provided with at least one first groove 211 for accommodating the force-applying portion 32. When the force-applying portion 32 is pulled to drive the fastening portion 31 to pivot to the release position P2, the abutting surface 311 of the fastening portion 31 leaves the embedding groove 12, and the side thereof facing the through hole 22 is the release surface 312, thereby releasing the abutting effect on the embedding groove 12 and then releasing the positioning of the adjusting tube 2. At this time, the adjusting tube 2 can rotate relative to the tube body 1 to adjust the length.
[0037] Further explanation, such as Figure 3As shown, the clamping portion 31 has a pivotally mounted mounting hole 313, a first distance L1 is provided between the center of the mounting hole 313 and the abutting surface 311, a second distance L2 is provided between the center of the mounting hole 313 and the loosening surface 312, and the first distance L1 is greater than the second distance L2, thereby forming sufficient pivoting space for the clamping plate 3 to pivot and complete the loosening and clamping actions.
[0038] Furthermore, if Figure 1 As shown, the end of the tube body 1 relatively far away from the adjusting cylinder 2 is provided with a mounting seat 4 for installation on the car, a limiting ring 5 is screwed between the mounting seat 4 and the adjusting cylinder 2, and the mounting seat 4 has a spring body 6 set on the tube body 1 between the limiting ring 5, one end of the spring body 6 abuts against the mounting seat 4, and the other end abuts against the limiting ring 5, and the spring body 6 absorbs the vibration generated during the driving of the car to achieve a shock-absorbing effect.
[0039] When the first embodiment of the utility model is actually used, Figure 3 As shown, after the adjusting tube 2 is screwed to the tube body 1 at a suitable height, it is rotated until each of the through holes 22 is arranged opposite to each of the embedding grooves 12, and the force-applying portion 32 of the clamping plate 3 is pulled to drive the clamping portion 31 to pivot toward one side of the tube body 1 until the clamping portion 31 penetrates the through hole 22 and is embedded in the embedding groove 12, and the abutting surface 311 of the clamping portion 31 is in contact with the flat bottom surface 121 of the embedding groove 12. At this time, the clamping plate 3 is located at the clamping position P1 to position the adjusting tube 2, so that the adjusting tube 2 and the tube body 1 cannot rotate relative to each other. When the threaded height of the adjusting tube 2 needs to be adjusted, the force-applying portion 32 is pulled as shown in FIG. 4 to drive the clamping portion 31 to pivot toward one side of the adjusting tube 2, so that the abutting surface 311 of the clamping portion 31 is disengaged from the embedding groove 12, and the loosening surface 312 of the clamping portion 31 is arranged opposite to the through hole 22, thereby releasing the positioning of the adjusting tube 2, so that the adjusting tube 2 and the tube body 1 can rotate relative to each other.
[0040] like Figure 5 and Figure 6 The second embodiment of the adjustable length shock absorber provided by the utility model is shown, which is different from the first embodiment in that the clamping plate 3 is pivoted along the axial direction toward the side opposite to the tube body 1 to the clamping position P1.
[0041] like Figures 7 to 9 The third embodiment of the adjustable length shock absorber provided by the utility model is different from the first embodiment mentioned above in that: Figure 8 As shown in FIG. 7 , the embedded groove 12 has a circular arc bottom surface 122, and the maximum depth D3 of the embedded groove 12 is equal to the thread height D2 of the thread segment 11. Please continue to refer to FIG. 7 and Fig. 9The adjusting tube 2 extends outwardly toward one end face of the tube body 1 to form a first annular protrusion 21, and the lower part of the first annular protrusion 21 protrudes outward along the outer wall of the adjusting tube to form a second annular protrusion 24. The through hole 22 is provided between the first annular protrusion 21 and the second annular protrusion 24. The clamping plate 3 is pivotally disposed between the first annular protrusion 21 and the second annular protrusion 24 by the clamping portion 31, and pivots along the outer periphery of the adjusting tube 2. The clamping plate 3 has a T-shaped force-applying portion 32 and a clamping portion 31 with an arc-shaped pressing surface. The first annular protrusion 21 and the second annular protrusion 24 are both provided with a first groove 211 and a second groove 241 for accommodating the force-applying portion 32. As shown in FIG. 9 , when the clamping plate 3 is pivoted to the clamping position P1, the pressing surface 311 fits with the arc bottom surface 122 of the embedding groove 12, and the force-applying portion 32 is accommodated in the first groove 211 and the second groove 241.
[0042] like Fig.10 The fourth embodiment of the adjustable length shock absorber provided by the utility model is shown in FIG. 1 . A shock absorbing rod 7 is installed at one end of the tube body 1 relatively far from the adjusting tube 2. The tube body and the shock absorbing rod are connected to form an inner tube cavity (not shown in the figure). A hydraulic shock absorbing mechanism (not shown in the figure) is arranged in the inner tube cavity. The end of the shock absorbing rod 7 has a pivoting portion 71. The pivoting portion 71 has a pivoting hole 72 for pivoting and mounting on the motorcycle body. The peripheral side of the adjusting tube 2 relatively far from the end of the tube body 1 has two symmetrically extending assembly portions 25. The two assembly portions 25 are arranged at intervals for mounting the motorcycle wheel.
[0043] By means of the adjustable length shock absorber provided by the utility model, the clamping part 31 of the clamping plate 3 extends into the through hole 22 and is pressed against the embedded groove 12, so that the clamping plate 3 is located at the clamping position P1 and the adjusting tube 2 is in a fixed state, which solves the problem that the fixed screw ring is difficult to rotate and the length is difficult to adjust due to the accumulation of mud and sand between the threads, and achieves the effect of easy installation and adjustment. At the same time, the clamping plate 3 is embedded and pressed against the embedded groove 12, so that the adjusting tube 2 cannot rotate relative to the tube body 1, which solves the problem that the adjusting tube 2 and the tube body 1 rotate relative to each other due to long-term driving vibration to form a gap that affects the shock absorption effect, and achieves the effect that the adjusting tube is not easy to loosen and does not produce abnormal noise.
[0044] The disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Therefore, any changes in numerical values or replacement of equivalent components should still fall within the scope of the present invention.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An adjustable length shock absorber, characterized in that: A tube body, one end of which is threaded along an axial direction to form a thread segment, and the thread segment is divided along the axial direction by at least one embedded groove; An adjusting cylinder is sleeved on the outer tube body and can be screwed with the tube body to different heights to adjust the length of the tube body extending outside the adjusting cylinder; Among them, at least one through hole is provided on the circumferential side of the adjusting cylinder, and each of the through holes can rotate with the adjusting cylinder to be arranged opposite to the embedding groove. A fixing lever is pivotally provided outside each of the through holes, and the fixing lever has a fixing portion that can be embedded in the embedding groove and a force-applying portion for pulling. The fixing lever can pivot between a fixing position and a loosening position. When the fixing lever pivots to the fixing position, the fixing portion penetrates into the through hole and is embedded in the embedding groove to position the adjusting cylinder so that it cannot move axially along the threaded section. When the fixing lever pivots to the loosening position, the fixing portion disengages from the embedding groove to release the positioning of the adjusting cylinder.
2. The adjustable length shock absorber according to claim 1, characterized in that: The threaded section of the tube body is divided along the axial direction by two symmetrically arranged embedding grooves, and two through holes are symmetrically provided on the peripheral side of the adjusting cylinder. The two through holes can rotate with the adjusting cylinder to be arranged opposite to the two embedding grooves.
3. The adjustable length shock absorber according to claim 1, characterized in that: The clamping part has a pivotally mounted mounting hole. When the clamping part is pivoted to the clamping position, a side of the clamping part facing the through hole is a pressing surface, and a first distance is provided between the pressing surface and the center of the mounting hole. When the clamping part is pivoted to the loosening position, a side of the clamping part facing the through hole is a loosening surface, and a second distance is provided between the loosening surface and the center of the mounting hole, and the first distance is greater than the second distance.
4. The adjustable length shock absorber according to claim 3, characterized in that: The embedding groove has a flat bottom surface, and the depth of the embedding groove is greater than or equal to the thread height of the threaded section. The abutting surface of the clamping part is a plane. When the clamping part is pivoted to the clamping position, the abutting surface fits with the flat bottom surface of the embedding groove.
5. The adjustable length shock absorber according to claim 3, characterized in that: The embedding groove has an arc bottom surface, and the maximum depth of the embedding groove is greater than or equal to the thread height of the thread segment. The pressing surface of the clamping part is an arc surface. When the clamping part is pivoted to the clamping position, the pressing surface fits with the arc bottom surface of the embedding groove.
6. The adjustable length shock absorber according to claim 1, characterized in that: The adjusting tube extends outwardly toward one end surface of the tube body to form a first annular protrusion, each of the through holes is arranged below the first annular protrusion, and two protruding parts protrude symmetrically on both sides of each through hole. The clamping lever is pivotally arranged between the two protruding parts and pivotally swings along the axial direction toward one side of the tube body to the clamping position, and the first annular protrusion is provided with at least one first groove for the force-applying part to be clamped.
7. The adjustable length shock absorber according to claim 1, characterized in that: The clamping plate is pivoted along the axial direction toward a side opposite to the tube body to the clamping position.
8. The adjustable length shock absorber according to claim 1, characterized in that: The adjusting tube extends outwardly toward one end face of the tube body to form a first annular protrusion, and the lower part of the first annular protrusion protrudes outwardly along the outer wall of the adjusting tube to form a second annular protrusion, and the through hole is opened between the first annular protrusion and the second annular protrusion, and the clamping plate is pivotally arranged between the first annular protrusion and the second annular protrusion and pivots along the radial direction of the adjusting tube, and the first annular protrusion and the second annular protrusion are both provided with a first groove and a second groove for accommodating the force-applying part.
9. The adjustable length shock absorber according to claim 1, characterized in that: A mounting seat is provided at one end of the tube body relatively away from the adjusting cylinder, a limiting ring is screwed between the mounting seat and the adjusting cylinder, a spring body is provided on the tube body between the mounting seat and the limiting ring, one end of the spring body abuts against the mounting seat, and the other end abuts against the limiting ring.
10. The adjustable length shock absorber according to claim 1, characterized in that: A shock-absorbing rod is installed at one end of the tube body relatively far away from the adjustment tube. The end of the shock-absorbing rod has a pivot portion, and the pivot portion has a pivot hole for pivotal installation. The peripheral side of the end of the adjustment tube relatively far away from the tube body has two symmetrically extending outwardly assembly portions, and the two assembly portions are arranged at intervals.