Rotary telescopic structure
By introducing a rotary telescopic structure into the telescopic sleeve structure, the rotational lifting and lowering of the outer cylinder relative to the inner cylinder is achieved by using the coordinated transmission of the adjustment teeth and the adjustment groove, and the frictional force self-locking, the problem of difficult control of the lifting speed and amplitude of the inner cylinder in the prior art is solved, and the stable height maintenance of the outer cylinder is achieved.
Patent Information
- Application Number
- CN202422398503.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing telescopic sleeve structure is difficult to control the lifting speed and amplitude of the inner cylinder under the action of external force, and the inner cylinder will fall directly when the external force is lost, making it difficult to maintain a stable height.
Using a rotary telescopic structure, by setting adjustment teeth and adjustment grooves between the outer cylinder and the inner cylinder, the adjustment teeth slide along the adjustment groove to realize the rotational lifting and lowering movement of the outer cylinder relative to the inner cylinder, and self-locking is achieved through friction to maintain the stable height of the outer cylinder.
Effectively control the lifting speed and amplitude of the outer cylinder relative to the inner cylinder, and maintain the stable height of the outer cylinder through a self-locking mechanism when the external force is lost, solving the problem that the inner cylinder is difficult to control the lifting in the prior art.
Smart Images
Figure CN223035445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of telescopic structures, in particular to a rotary telescopic structure. Background Art
[0002] The telescopic sleeve structure is often used in the mechanical field. The inner and outer cylinders move relative to each other as needed. At this time, the inner cylinder will move up and down in the outer cylinder under the action of an external force. Since there is no corresponding blocking structure between the inner cylinder and the outer cylinder, when an external force is applied, the inner cylinder will directly rise straight in the outer cylinder diameter. When the external force is lost, the inner cylinder will directly fall down in the outer cylinder. Both the movement speed and the lifting amplitude are difficult to control.
[0003] Therefore, there is an urgent need for a rotary telescopic structure to solve the above technical problems. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a rotary telescopic structure, which can effectively control the speed and amplitude of the outer cylinder rising and falling relative to the inner cylinder, and the outer cylinder can be stably locked and maintained at the original height position.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] Provide a rotary telescopic structure, including:
[0007] Inner cylinder;
[0008] Outer cylinder, the outer cylinder is provided with an adjustment through hole, and the inner cylinder is inserted through the adjustment through hole;
[0009] One of the outer wall of the inner cylinder and the inner wall of the adjustment through hole is provided with an adjustment groove, and the other is provided with adjustment teeth. The adjustment teeth are inserted into the adjustment groove. When the adjustment teeth slide along the adjustment groove, the outer cylinder rises or falls relative to the inner cylinder.
[0010] Preferably, a limit convex edge is arranged at the bottom of the adjustment through hole. The limit convex edge is arranged around the circumference of the adjustment through hole. The limit convex edge can abut against the lower end of the inner cylinder to limit the lower limit position that the inner cylinder can reach.
[0011] Preferably, a stop convex platform is arranged on the outer wall of the inner cylinder. The stop convex platform can abut against the upper end of the outer cylinder to limit the upper limit position that the outer cylinder can reach.
[0012] Preferably, the rotary telescopic structure further includes an outer pipe seat. An adjustment cavity is arranged inside the outer pipe seat. The inner cylinder is fixed in the adjustment cavity, and the outer cylinder is inserted through the adjustment cavity.
[0013] Preferably, a connecting piece is provided in the regulating cavity, one end of the connecting piece is connected to the outer wall of the inner cylinder, and the other end of the connecting piece is connected to the inner wall of the regulating cavity.
[0014] Preferably, a stop plate is provided in the regulating cavity, and a stop flange is provided on the outer wall of the outer cylinder, and the stop flange can abut against the stop plate to limit the upper limit position that the outer cylinder can reach.
[0015] Preferably, a clearance gap is provided on a side of the stop block close to the inner cylinder, and the clearance gap is used to avoid the outer cylinder.
[0016] Preferably, the stop flange is extended around the circumference of the outer cylinder, and a demoulding groove is provided on the stop flange on a side close to the outer cylinder, and the demoulding groove is extended around the circumference of the outer cylinder.
[0017] Preferably, the outer wall of the outer cylinder is further provided with a reinforcing sheet, which extends away from the stop flange, one side of the reinforcing sheet is connected to the outer wall of the outer cylinder, and the lower end of the reinforcing sheet is connected to the stop flange.
[0018] Preferably, the bottom of the outer cylinder is also provided with:
[0019] A rotating piece for a user to turn the outer cylinder to rotate; and / or
[0020] The indicator mark is used to indicate the lifting direction corresponding to the rotation action of the outer cylinder.
[0021] Beneficial effects of the utility model:
[0022] The utility model provides a rotating telescopic structure, in which the outer cylinder is sleeved outside the inner cylinder, and the outer cylinder and the inner cylinder are connected by the cooperation of the adjusting teeth and the adjusting groove. When the user twists the outer cylinder, the outer cylinder rotates relative to the inner cylinder, and the adjusting teeth slide along the adjusting groove. At this time, the outer cylinder rises or falls relative to the inner cylinder. On the one hand, the user can effectively control the speed and amplitude of the outer cylinder relative to the inner cylinder by twisting the outer cylinder to drive the lifting; on the other hand, after the user releases the outer cylinder, the friction between the adjusting teeth and the adjusting groove plays a self-locking role in the descent of the outer cylinder, so as to stably maintain the outer cylinder at the original height position. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the exploded structure of the rotating telescopic structure provided by the utility model;
[0024] Figure 2 It is a cross-sectional view of the rotating telescopic structure provided by the utility model;
[0025] Figure 3 It is a structural schematic diagram of the inner tube and the outer tube seat provided by the utility model;
[0026] Figure 4 is a schematic structure diagram of the outer cylinder provided by the present utility model Figure 1 ;
[0027] Figure 5 is a schematic structure diagram of the outer cylinder provided by the present utility model Figure 2 .
[0028] In the figure:
[0029] 10. Inner cylinder; 11. Lifting hole; 20. Outer cylinder; 21. Adjusting through hole; 22. Rotating piece; 23. Indication mark; 30. Outer tube seat; 40. Adjusting cavity;
[0030] 1. Adjusting tooth; 2. Adjusting groove; 3. Limiting convex edge; 4. Stopping convex platform; 5. Connecting piece; 6. Stopping retaining piece; 61. Yielding notch; 7. Stopping convex flange; 8. Demolding groove; 9. Reinforcing piece. Specific embodiments
[0031] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.
[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0034] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0035] As Figures 1 - 5 shown, this embodiment provides a rotary telescopic structure. The rotary telescopic structure is used to convert the rotary stroke input by the user into a linear telescopic stroke to achieve precise and controllable lifting motion. The rotary telescopic structure includes an inner cylinder 10, an outer cylinder 20, and an outer pipe seat 30. Among them, the inner cylinder 10 is fixed in the outer pipe seat 30, and the outer pipe seat 30 serves to provide horizontal support. The outer cylinder 20 is provided with an adjustment through hole 21, and the inner cylinder 10 passes through the adjustment through hole 21, that is, the outer cylinder 20 is sleeved outside the inner cylinder 10 and is located between the inner cylinder 10 and the outer pipe seat 30.
[0036] Further, as Figures 1 - 5 shown, one of the outer wall of the inner cylinder 10 and the inner wall of the adjustment through hole 21 is provided with an adjustment groove 2, and the other is provided with an adjustment tooth 1. The adjustment tooth 1 is inserted into the adjustment groove 2. When the adjustment tooth 1 slides along the adjustment groove 2, the outer cylinder 20 rises or falls relative to the inner cylinder 10.
[0037] Specifically, as Figures 2 - 5 shown, for the rotary telescopic structure provided in this embodiment, the outer cylinder 20 is sleeved outside the inner cylinder 10. The adjustment tooth 1 is provided on the inner wall of the adjustment through hole 21, and the adjustment groove 2 is provided on the outer wall of the inner cylinder 10. At the same time, the outer cylinder 20 and the inner cylinder 10 are drivingly connected through the cooperation of the adjustment tooth 1 and the adjustment groove 2. When the user twists the outer cylinder 20, the outer cylinder 20 rotates relative to the inner cylinder 10, and the adjustment tooth 1 slides along the adjustment groove 2. At this time, the outer cylinder 20 rises or falls relative to the inner cylinder 10. On the one hand, when the user twists the outer cylinder 20 to drive the adjustment tooth 1 to move along the adjustment groove 2, the speed and amplitude of the outer cylinder 20 rising or falling relative to the inner cylinder 10 can be effectively controlled. On the other hand, after the user releases the outer cylinder 20, the cooperation between the adjustment tooth 1 and the adjustment groove 2 plays a self-locking role in the descent of the outer cylinder 20 to stably hold the outer cylinder 20 at the original height position.
[0038] In other embodiments, the adjustment groove 2 is provided on the inner wall of the adjustment through hole 21, and the adjustment tooth 1 is provided on the outer wall of the inner cylinder 10.
[0039] Exemplarily, as Figures 2 - 5As shown, the adjusting tooth 1 is specifically a helical tooth, and the adjusting groove 2 is specifically a helical groove. The adjusting tooth 1 extends along the axial direction of the adjusting through-hole 21. Correspondingly, the adjusting groove 2 extends along the axial direction of the inner cylinder 10. When the outer cylinder 20 is sleeved on the inner cylinder 10, the helical tooth is embedded in the helical groove, and both helically extend in the same axial direction. The frictional force between the helical tooth and the helical groove is used to lock the descent of the outer cylinder 20, so as to stably maintain the outer cylinder 20 at the original height position. At the same time, the cooperation between the helical tooth and the helical groove can guide the relative movement between the outer cylinder 20 and the inner cylinder 10.
[0040] Of course, in other embodiments of the present invention, the adjusting groove 2 can also be set as a structure extending along an "S" shape or other smooth curved path. The adjusting tooth 1 can either be adapted to the shape of the adjusting groove 2 and have a coincident extending path, or can be directly set as a columnar structure such as a cylinder, a prism, or other special-shaped structures that can move in the adjusting groove 2. The adjusting tooth 1 is inserted into the adjusting groove 2 and can slide along the adjusting groove 2. During this process, the relative position between the adjusting tooth 1 and the adjusting groove 2 changes, so as to realize the height change of the outer cylinder 20 relative to the inner cylinder 10. The speed and amplitude of the lifting and lowering can be controlled by increasing the frictional force between the adjusting tooth 1 and the adjusting groove 2.
[0041] Exemplarily, as Figures 1 - 3 shown, an adjusting cavity 40 is provided inside the outer pipe seat 30. The adjusting cavity 40 is arranged at the bottom end of the outer pipe seat 30. The inner cylinder 10 is fixed in the adjusting cavity 40, and the outer cylinder 20 passes through the adjusting cavity 40. The outer cylinder 20 can be hidden in the outer pipe seat 30. A plurality of connecting pieces 5 are arranged in the adjusting cavity 40. One end of the connecting piece 5 is connected to the outer wall of the inner cylinder 10, and the other end of the connecting piece 5 is connected to the inner wall of the adjusting cavity 40 to strengthen the connection structure strength between the inner cylinder 10 and the outer pipe seat 30.
[0042] Exemplarily, the inner pipe and the outer pipe seat 30 are integrally formed and are both made of metal alloy or plastic.
[0043] Exemplarily, as Figure 2 、 Figure 4 and Figure 5 shown, a limiting convex edge 3 is provided at the bottom of the adjusting through-hole 21. The limiting convex edge 3 is arranged around the circumference of the adjusting through-hole 21 and thus protrudes from the bottom of the adjusting through-hole 21. The outer diameter of the inner cylinder 10 is larger than the inner diameter of the limiting convex edge 3. Therefore, when the inner cylinder 10 descends relative to the outer cylinder 20, the limiting convex edge 3 can abut against the lower end of the inner cylinder 10 to limit the lower limit position that the inner cylinder 10 can reach.
[0044] Exemplarily, as Figure 2 and Figure 3As shown, a stop boss 4 is provided on the outer wall of the inner cylinder 10. The stop boss 4 can abut against the upper end of the outer cylinder 20 to define the upper limit position that the outer cylinder 20 can reach. The stop boss 4 is arranged circumferentially around the inner cylinder 10 to form an annular boss structure. When the outer cylinder 20 rises relative to the inner cylinder 10, the stop boss 4 can abut against the upper end of the outer cylinder 20 to define the upper limit position that the outer cylinder 20 can reach.
[0045] Exemplarily, as Figures 1 - 5 shown, a stop flap 6 is provided in the adjustment cavity 40, and a stop flange 7 is provided on the outer wall of the outer cylinder 20. When the outer cylinder 20 rises relative to the inner cylinder 10, the stop flange 7 can abut against the stop flap 6 to define the upper limit position that the outer cylinder 20 can reach. It can be seen that the limiting convex edge 3, the stop boss 4, as well as the stop flap 6 and the stop flange 7 have the same effect, which is to limit the degree of approach between the inner cylinder 10 and the outer cylinder 20 and play a role of limiting protection. The stroke limits of the three groups of limiting protection structures can be the same or different from each other. When the limiting protection structure with a smaller stroke limit fails, the remaining limiting protection structures can play a backup protection role to improve the error tolerance rate.
[0046] In this embodiment, as Figure 2 and Figure 3 shown, the stop flap 6 is connected to both the outer tube seat 30 and the outer wall of the inner cylinder 10 at the same time. The inner side edge of the stop flap 6 is connected to the outer wall of the inner cylinder 10, and the outer side edge of the stop flap 6 is connected to the inner wall of the outer tube seat 30, and it can also play a role in strengthening the connection structure strength between the inner cylinder 10 and the outer tube seat 30. In some other embodiments, the stop flap 6 can also be connected only to the outer wall of the inner cylinder 10 or the inner wall of the outer tube seat 30 to simplify the structure and reduce the processing difficulty.
[0047] Exemplarily, as Figure 2 and Figure 3 shown, a relief notch 61 is provided on the side of the stop flap 6 close to the inner cylinder 10. The relief notch 61 is used to avoid the main body part of the outer cylinder 20. Specifically, the stop flange 7 is wound around the bottom circumference of the outer cylinder 20. When the outer cylinder 20 rises, the main body part of the outer cylinder 20 penetrates into the relief notch 61, without interfering with the stop flap 6 and without affecting the abutting contact between the stop flap 6 and the stop flange 7.
[0048] Exemplarily, the outer cylinder 20 is formed by an injection molding process or a casting process. The stop flange 7 extends circumferentially around the outer cylinder 20. On the side close to the outer cylinder 20, a demolding groove 8 is provided on the stop flange 7. The demolding groove 8 extends circumferentially around the outer cylinder 20. The setting of the demolding groove 8 can reduce the demolding difficulty, reduce process defects, and improve the product qualification rate.
[0049] Exemplarily, as Figure 4 and Figure 5As shown, a plurality of reinforcing pieces 9 are further provided on the outer wall of the outer cylinder 20. The reinforcing pieces 9 extend away from the stop flange 7. One side of the reinforcing piece 9 is connected to the outer wall of the outer cylinder 20, and the lower end of the reinforcing piece 9 is connected to the stop flange 7. The arrangement of the reinforcing pieces 9 serves to improve the connection strength between the stop flange 7 and the main body part of the outer cylinder 20, and reduce the risk of the stop flange 7 falling off or partially falling off.
[0050] Exemplarily, such as Figure 5 As shown, a plurality of rotating pieces 22 are further provided at the bottom of the outer cylinder 20. The rotating pieces 22 are for the user to dial the outer cylinder 20 to rotate, and chamfers are provided on the rotating pieces 22 to avoid scratching the user. In this embodiment, two rotating pieces 22 are provided, and the two rotating pieces 22 are symmetrically arranged on both sides of the adjusting through hole 21, facilitating the user to grasp and dial.
[0051] Exemplarily, such as Figure 5 As shown, an indication index 23 is further provided at the bottom of the outer cylinder 20. The indication index 23 is used to indicate the lifting direction corresponding to the rotation action of the outer cylinder 20, improving the convenience of use.
[0052] Exemplarily, the rotary telescopic structure usually acts on a rod-shaped structure that needs to be lifted. For example, as Figure 2 and Figure 3 As shown, a lifting hole 11 extending in the same direction as it is provided in the inner cylinder 10. The outer cylinder 20 can be connected to a rod passing through the lifting hole 11. The rod is rotationally connected to the outer cylinder 20 around the axis. As the height of the outer cylinder 20 relative to the inner cylinder 10 changes, the rod lifts along the lifting hole 11. Structures such as a rotation-limiting surface and a limiting protrusion can be provided on the rod to limit the rotation of the rod with the outer cylinder 20 and prevent the rod and the outer cylinder 20 from detaching from the inner cylinder 10.
[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A rotating telescopic structure, characterized in that: include: Inner cylinder (10); An outer cylinder (20), wherein the outer cylinder (20) is provided with an adjustment through hole (21), and the inner cylinder (10) is passed through the adjustment through hole (21); An adjustment groove (2) is provided on one of the outer wall of the inner cylinder (10) and the inner wall of the adjustment through hole (21), and an adjustment tooth (1) is provided on the other. The adjustment tooth (1) is inserted into the adjustment groove (2). When the adjustment tooth (1) slides along the adjustment groove (2), the outer cylinder (20) rises or falls relative to the inner cylinder (10).
2. The rotating and telescopic structure according to claim 1, characterized in that: A limiting convex edge (3) is arranged at the bottom of the adjusting through hole (21), and the limiting convex edge (3) is arranged around the circumference of the adjusting through hole (21). The limiting convex edge (3) can abut against the lower end of the inner cylinder (10) to limit the lower limit position that the inner cylinder (10) can reach.
3. The rotating and telescopic structure according to claim 1, characterized in that: A stop boss (4) is provided on the outer wall of the inner cylinder (10), and the stop boss (4) can abut against the upper end of the outer cylinder (20) to limit the upper limit position that the outer cylinder (20) can reach.
4. The rotating and telescopic structure according to claim 1, characterized in that: The rotating telescopic structure also includes an outer tube seat (30), an adjusting cavity (40) is provided inside the outer tube seat (30), the inner tube (10) is fixed in the adjusting cavity (40), and the outer tube (20) is inserted into the adjusting cavity (40).
5. The rotating and telescopic structure according to claim 4, characterized in that: A connecting piece (5) is provided in the regulating cavity (40), one end of the connecting piece (5) is connected to the outer wall of the inner cylinder (10), and the other end of the connecting piece (5) is connected to the inner wall of the regulating cavity (40).
6. The rotating and telescopic structure according to claim 4, characterized in that: A stop plate (6) is provided in the regulating cavity (40), and a stop flange (7) is provided on the outer wall of the outer cylinder (20). The stop flange (7) can abut against the stop plate (6) to limit the upper limit position that the outer cylinder (20) can reach.
7. The rotating and telescopic structure according to claim 6, characterized in that: A clearance notch (61) is provided on one side of the stop block (6) close to the inner cylinder (10), and the clearance notch (61) is used to avoid the outer cylinder (20).
8. The rotating and telescopic structure according to claim 6, characterized in that: The stop flange (7) is extended around the circumference of the outer cylinder (20), and a demoulding groove (8) is provided on the stop flange (7) on the side close to the outer cylinder (20). The demoulding groove (8) is extended around the circumference of the outer cylinder (20).
9. The rotating and telescopic structure according to claim 6, characterized in that: The outer wall of the outer cylinder (20) is also provided with a reinforcing sheet (9), which is extended away from the stop flange (7), one side of the reinforcing sheet (9) is connected to the outer wall of the outer cylinder (20), and the lower end of the reinforcing sheet (9) is connected to the stop flange (7).
10. The rotating and telescopic structure according to any one of claims 1 to 9, characterized in that: The bottom of the outer cylinder (20) is also provided with: A rotating piece (22) for a user to turn the outer cylinder (20) to rotate; and / or The indicating mark (23) is used to indicate the lifting direction corresponding to the rotation action of the outer cylinder (20).