An easily adjustable telescopic tube structure
Patent Information
- Application Number
- CN202522267711.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-27
AI Technical Summary
实际操作时，用户都是用手指向内按压挺柱的端部，由于挺柱的端部面积相对较小，用户往往需要耗费较大的压力才可使挺柱活动，并且会存在“扎手”的感觉，操作不便，大大降低了用户的使用体验
[0014]本实用新型的有益效果是：本实用新型的便于调节的伸缩管结构，用户通过按压调节按钮从而推抵挺柱移动，以解除挺柱与锁孔之间的锁定关系，调节按钮沿自身滑动方向的正投影面积大于挺柱的正投影面积，使得调节按钮上供用户按压操作的面积大大增加，降低了调节按钮对用户手指的压迫，更有利于用户高效调节，且在用户解除对调节按钮的按压作用时，调节按钮可自行复位，大大方便了操作。
Smart Images
Figure CN224706093U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescopic pipe technology, and in particular, to a telescopic pipe structure that is easy to adjust. Background Technology
[0002] Wheelchair footrests, backrests, and other structures are typically designed with height-adjustable telescopic mechanisms. These mechanisms are usually designed as telescopic tubes, consisting of an outer tube and an inner tube. The outer tube fits over the inner tube and can slide along its length to achieve the telescopic function. To lock the inner and outer tubes in place, the telescopic tube structure is equipped with locking devices. The most common method is to have through holes on the inner and outer tubes, with a push rod inserted through each hole. A spring connects the push rod to the inner tube. In the natural state, the push rod, under the action of the spring, passes through the two through holes in the inner and outer tubes sequentially and partially extends outside the outer tube. At this point, the inner and outer tubes are locked by the push rod, preventing relative sliding between them. When the user presses the push rod inward against the spring force, the push rod disengages from the through hole on the outer tube, releasing the lock and allowing the user to slide relative to the inner tube to the outer tube. In actual operation, users press the end of the plunger inward with their fingers. Since the end area of the plunger is relatively small, users often need to exert a lot of pressure to make the plunger move, and there will be a "prickly" feeling, which is inconvenient to operate and greatly reduces the user experience. Utility Model Content
[0003] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a telescopic tube structure that is easy to adjust is provided.
[0004] The technical solution adopted by this utility model to solve its technical problem is: an easily adjustable telescopic tube structure, including an inner tube, an outer tube, an elastic element, a pusher, a fixing element, an adjusting button, and an elastic reset element. The outer tube is slidably sleeved on the outside of the inner tube. A through hole is opened on the side wall of the inner tube, and a locking hole is opened on the side wall of the outer tube. The elastic element is disposed inside the inner tube. The pusher is connected to the elastic element and can pass through the through hole and the locking hole. The fixing element is fixedly disposed on the outer tube. The adjusting button is slidably disposed on the fixing element. The elastic reset element is telescopically disposed between the adjusting button and the outer tube. The orthographic projection of the adjusting button along its own sliding direction is larger than the orthographic projection area of the pusher. When the adjusting button is pressed, it can push the pusher to move so that the pusher disengages from the locking hole.
[0005] Furthermore, the adjustment button includes a pressure plate and a top column. The top column is fixedly connected to the center of the pressure plate and corresponds to the push column. When the pressure plate is pressed, the top column can push inward against the push column.
[0006] Furthermore, one end of the elastic reset member elastically abuts against the outer wall of the outer tube, and the other end of the elastic reset member elastically abuts against the pressure plate.
[0007] Furthermore, the fastener has a C-shaped structure and is fixedly sleeved on the outer tube. A limiting groove is formed on the outer side wall of the outer tube, and a limiting block is protruding on the inner wall of the fastener. The limiting block and the limiting groove cooperate with each other.
[0008] Furthermore, the inner wall of the fastener is provided with a mounting groove that passes through the outer wall of the fastener, and a flange protrudes from the opening of the mounting groove near the outer wall. A retaining flange protrudes from the outer peripheral wall of the adjustment button. The adjustment button is slidably disposed in the mounting groove, and the retaining flange abuts against the flange under the elastic force of the elastic reset member.
[0009] Furthermore, a guide bar is protruding on the bottom wall of the mounting groove, and a guide groove is formed on the flange, wherein the guide bar and the guide groove are slidably connected.
[0010] Furthermore, the outer tube includes an outer sleeve and an inner sleeve, the outer sleeve is fixedly sleeved outside the inner sleeve, the fastener is fixedly connected to the outer sleeve, and the inner sleeve is sleeved outside the inner tube.
[0011] Furthermore, a buckle protrudes from the side wall of the inner sleeve, the buckle being elastic, and a groove is formed on the side wall of the outer sleeve, the buckle engaging with the groove.
[0012] Furthermore, the bottom of the inner wall of both the outer sleeve and the inner sleeve is set as an inclined surface, and the end of the tappet is set as a spherical structure.
[0013] Furthermore, multiple through holes are provided on the side wall of the inner tube along the length direction, and an elastic element is installed in the inner tube corresponding to each through hole.
[0014] The beneficial effects of this utility model are as follows: The easily adjustable telescopic tube structure of this utility model allows the user to push the push rod to move by pressing the adjustment button, thereby releasing the locking relationship between the push rod and the locking hole. The orthographic projection area of the adjustment button along its own sliding direction is larger than the orthographic projection area of the push rod, which greatly increases the area on the adjustment button for the user to press and operate, reduces the pressure of the adjustment button on the user's fingers, and is more conducive to efficient adjustment by the user. Moreover, when the user releases the pressing action on the adjustment button, the adjustment button can automatically reset, which greatly facilitates the operation. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a perspective view of the adjustable telescopic tube structure of this utility model;
[0017] Figure 2 yes Figure 1 An exploded view of the easily adjustable telescopic tube structure is shown.
[0018] Figure 3 yes Figure 2 A perspective view of the fixing components in the telescopic tube structure that facilitates adjustment;
[0019] Figure 4 yes Figure 2 A 3D view of the adjustment button in the telescopic tube structure shown for easy adjustment;
[0020] Figure 5 yes Figure 1 The front view of the easily adjustable telescopic tube structure is shown.
[0021] Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the easily adjustable telescopic tube structure along AA.
[0022] Figure 7 yes Figure 6 The cross-sectional view of another state of the telescopic tube structure shown (press adjustment press state).
[0023] In the diagram: 10, inner tube; 101, through hole; 20, outer tube; 201, lock hole; 202, limiting groove; 21, outer tube; 211, slot; 22, inner sleeve; 221, buckle; 30, elastic element; 40, tappet; 50, fixing element; 51, limiting block; 52, mounting groove; 53, flange; 54, guide bar; 60, adjusting button; 61, pressure plate; 62, top column; 63, retaining flange; 64, guide groove; 70, elastic reset element. Detailed Implementation
[0024] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0025] Please see Figures 1-7This utility model provides an easily adjustable telescopic tube structure, including an inner tube 10, an outer tube 20, an elastic element 30, a pusher 40, a fixing element 50, an adjustment button 60, and an elastic reset element 70. The outer tube 20 is slidably sleeved on the outside of the inner tube 10. The elastic element 30 is fixedly installed inside the inner tube 10. A through hole 101 is opened on the side wall of the inner tube 10. A locking hole 201 corresponding to the through hole 101 is opened on the side wall of the outer tube 20. The pusher 40 is connected to the elastic element 30. The pusher 40 can pass through the through hole 101 and the locking hole 201 sequentially from the inside to the outside. The fixing element 50 is fixedly installed on the side wall of the outer tube 20. The adjustment button 60 is slidably installed on the fixing element 50. The elastic reset element 70 is telescopically installed between the adjustment button 60 and the outer tube 20 along the sliding direction of the adjustment button 60. When the adjustment button 60 is pressed, it can push the pusher 40 to move so that the pusher 40 is disengaged from the locking hole 201.
[0026] In its natural state, the adjustable telescopic tube structure of this invention allows the pusher 40 to extend outward under the elastic force of the elastic member 30, so that the outer end of the pusher 40 (i.e., the end of the pusher 40 furthest from the center of the inner tube 10) passes through the through hole 101 and the locking hole 201 in sequence. At this time, the inner tube 10 and the outer tube 20 are locked together by the pusher 40, and the outer tube 20 cannot slide along the length of the inner tube 10. Simultaneously, the adjustment button 60 is held away from the pusher 40 by the elastic force of the elastic reset member 70. When it is necessary to adjust the position of the outer tube 20 relative to the inner tube 10, the user presses the adjustment button 60 inward against the elastic force of the elastic reset member 70. The adjustment button 60 then pushes the pusher 40 inward against the elastic force of the elastic member 30. When the pusher 40 moves to disengage from the locking hole 201, the inner tube 10 and the outer tube 20 are unlocked, and the user can slide the outer tube 20 relative to the inner tube 10.
[0027] In this embodiment, multiple through holes 101 are formed along the length of the side wall of the inner tube 10. An elastic element 30 is installed inside the inner tube 10 corresponding to each through hole 101. That is, there is a one-to-one correspondence between the elastic element 30 and the through hole 101. When the user slides the outer tube 20 relative to the inner tube 10 until the locking hole 201 aligns with another through hole 201, the push pin 40 on the elastic element 30 at the corresponding through hole 201 will automatically insert into the locking hole 201, thereby locking the outer tube 20 onto the inner tube 10. In specific implementations, the number of through holes 101 can be set as needed and is not limited here.
[0028] Please see Figure 4The projected area of the adjustment button 60 along its sliding direction is larger than the projected area of the push post 40. The adjustment button 60 includes a pressure plate 61 and a top post 62. The top post 62 is fixedly connected to the center of the pressure plate 61 and corresponds to the push post 40. The pressure plate 61 is for user pressing operation, and the top post 62 is used to push the push post 40 inward under the action of the pressure plate 61. The top post 62 has a cylindrical structure, and the area on the pressure plate 61 for user pressing operation is much larger than the end area of the top post 62. This greatly increases the area on the adjustment button 60 for user pressing operation, reduces the pressure on the user's fingers, and makes it more convenient for the user to adjust efficiently.
[0029] Furthermore, one end of the elastic reset member 70 elastically abuts against the outer wall of the outer tube 20, and the other end of the elastic reset member 70 elastically abuts against the pressure plate 61. In one specific embodiment, the elastic reset member 70 is a spring sleeved on the outside of the top column 62.
[0030] Please see Figure 2 , Figure 3 The fastener 50 is roughly C-shaped and has a ring-like structure. It is made of deformable plastic and is fixedly fitted onto the outer tube 20. The inner cavity of the fastener 50 matches the outer contour of the outer tube 20. The fastener 50 is held in place by the compressive force generated by plastic deformation. In this embodiment, limiting grooves 202 are formed on opposite sides of the outer wall of the outer tube 20. Each limiting groove 202 has two opposing groove walls. Limiting blocks 51 are correspondingly protruded from opposite sides of the inner wall of the fastener 50. The limiting blocks 51 cooperate with the limiting grooves 202. The upper and lower groove walls of the limiting grooves 202 restrict the sliding of the limiting blocks 51 along the length of the outer tube 20, thereby stably fixing the fastener 50 onto the outer tube 20.
[0031] A mounting groove 52 is formed on the inner wall of the fixing member 50, and the mounting groove 52 extends through the outer wall of the fixing member 50. A flange 53 protrudes from the opening of the mounting groove 52 near the outer wall. A retaining flange 63 protrudes from the outer peripheral wall of the adjusting button 60. The adjusting button 60 is slidably disposed in the mounting groove 52. The retaining flange 63 abuts against the flange 53 under the elastic force of the elastic reset member 70 to prevent the adjusting button 60 from disengaging from the fixing member 50. Furthermore, a guide strip 54 protrudes from the groove wall of the mounting groove 52, and a guide groove 64 is formed on the retaining flange 63. The guide strip 54 and the guide groove 64 are slidably connected. When the adjusting button 60 is pressed, the adjusting button 60 slides in the mounting groove 52, and the guide strip 54 and the guide groove 64 slide relative to each other, which guides the adjusting button 60.
[0032] In addition, the shape of the outer surface of the adjustment button 60 (i.e., the surface that the user presses) matches the shape of the outer wall of the fastener 50 to achieve consistency in product appearance and high aesthetic appeal.
[0033] The elastic element 30 is roughly V-shaped and is made of spring steel. The elastic element 30 is pressed tightly against the inner wall of the inner tube 10 by its own elastic force, so that the elastic element 30 is fixed relative to the inner tube 10 and can prevent the elastic element 30 from moving relative to the inner tube 10.
[0034] Please see Figure 2 , Figure 6 The outer tube 20 includes an outer sleeve 21 and an inner sleeve 22. The outer sleeve 21 is fixedly fitted onto the outside of the inner sleeve 22. Designing the outer tube 20 as an inner and outer sleeve structure can greatly enhance the structural strength of the outer tube 20 and prevent the outer tube 20 from easily deforming. In this embodiment, both the outer sleeve 21 and the inner sleeve 22 are tubular structures that extend through both ends. The fastener 50 is fixedly connected to the outer sleeve 21. The inner sleeve 22 is fitted onto the outside of the inner tube 10. A buckle 221 protrudes from the side wall of the inner sleeve 22. The buckle 221 is elastic. A groove 211 is formed on the side wall of the outer sleeve 21, and the buckle 221 engages with the groove 211. In a specific embodiment, the inner sleeve 22 and the buckle 221 are integrally molded structures and are made of plastic. In addition, the bottom of the inner wall of both the outer sleeve 21 and the inner sleeve 22 is provided with a slope, which is used to allow the pusher 40 to be smoothly pressed into the outer tube 20. Furthermore, the end of the pusher 40 is provided with a spherical structure, which abuts against the slope, thereby enabling the pusher 40 to be pressed into the outer tube 20.
[0035] In this embodiment, the cross-sectional shape of both the inner tube 10 and the outer tube 20 is elliptical to prevent the outer tube 20 from rotating relative to the inner tube 10.
[0036] The easily adjustable telescopic tube structure of this utility model allows the user to push the push rod 40 to move by pressing the adjustment button 60, thereby releasing the locking relationship between the push rod 40 and the locking hole 201. The orthographic projection area of the adjustment button 60 along its sliding direction is larger than the orthographic projection area of the push rod 40, which greatly increases the area on the adjustment button 60 for the user to press, reduces the pressure of the adjustment button 60 on the user's fingers, and is more conducive to efficient adjustment by the user. Moreover, when the user releases the pressure on the adjustment button 60, the adjustment button 60 can automatically reset, which greatly facilitates operation.
[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A telescoping tube structure for ease of adjustment, characterized by: The device includes an inner tube, an outer tube, an elastic element, a push pin, a fixing element, an adjusting button, and an elastic reset element. The outer tube is slidably sleeved on the outside of the inner tube. The inner tube has a through hole on its side wall, and the outer tube has a locking hole on its side wall. The elastic element is located inside the inner tube. The push pin is connected to the elastic element and can pass through the through hole and the locking hole. The fixing element is fixedly located on the outer tube. The adjusting button is slidably located on the fixing element. The elastic reset element is telescopically located between the adjusting button and the outer tube. The orthographic projection of the adjusting button along its sliding direction is larger than the orthographic projection area of the push pin. When the adjusting button is pressed, it can push the push pin to move so that the push pin disengages from the locking hole.
2. The easily adjustable telescoping tube structure of claim 1, wherein: The adjustment button includes a pressure plate and a top column. The top column is fixedly connected to the center of the pressure plate and corresponds to the push column. When the pressure plate is pressed, the top column can push the push column inward.
3. The easily adjustable telescoping tube structure of claim 2, wherein: One end of the elastic reset member elastically abuts against the outer wall of the outer tube, and the other end of the elastic reset member elastically abuts against the pressure plate.
4. The easily adjustable telescoping tube structure of claim 2, wherein: The fastener has a C-shaped structure and is fixedly sleeved on the outer tube. A limiting groove is formed on the outer side wall of the outer tube, and a limiting block is protruding on the inner wall of the fastener. The limiting block and the limiting groove cooperate with each other.
5. The easily adjustable telescoping tube structure of claim 4, wherein: The inner wall of the fastener has a mounting groove that passes through the outer wall of the fastener. The mounting groove has a flange protruding from the opening on the outer wall. The outer peripheral wall of the adjustment button has a retaining flange protruding. The adjustment button is slidably disposed in the mounting groove. The retaining flange abuts against the flange under the elastic force of the elastic reset member.
6. The easily adjustable telescoping tube structure of claim 5, wherein: The bottom wall of the mounting groove is provided with a guide bar, and the flange is provided with a guide groove. The guide bar and the guide groove are slidably connected.
7. The easily adjustable telescoping tube structure of claim 1, wherein: The outer tube includes an outer sleeve and an inner sleeve. The outer sleeve is fixedly fitted over the outer sleeve, and the fastener is fixedly connected to the outer sleeve. The inner sleeve is fitted over the outer sleeve.
8. The easily adjustable telescoping tube structure of claim 7, wherein: The inner sleeve has a protruding buckle on its side wall, and the buckle is elastic. The outer sleeve has a slot on its side wall, and the buckle engages with the slot.
9. The easily adjustable telescoping tube structure of claim 7, wherein: The bottom of the inner wall of both the outer sleeve and the inner sleeve is set as an inclined surface, and the end of the tappet is set as a spherical structure.
10. The easily adjustable telescoping tube structure of claim 1, wherein: Multiple through holes are provided on the side wall of the inner tube along the length direction, and an elastic element is installed in the inner tube corresponding to each through hole.