A connecting locking element for a telescopic component

Abstract

This utility model discloses a connecting locking component for a telescopic part, characterized in that: it further includes a locking component rotatably connected to a locking sleeve; the locking component includes a driving component and a tensioning component; through the setting of the locking component, the tensioning component, the driving component, and the locking sleeve rotate in a three-point linkage, requiring only manual pressing of the driving component to drive the locking sleeve to tighten inward through the linkage; in conjunction with the pre-set groove elastic structure at the end of the outer telescopic part, the tightening force of the locking sleeve can drive the outer telescopic part to contract radially, thereby tightly gripping the inner telescopic part, ultimately forming a double locking effect of "the locking sleeve gripping the outer telescopic part, and the outer telescopic part gripping the inner telescopic part"; no tools are needed, and the entire locking process can be completed manually. Compared with the traditional threaded locking which requires a large torque and has insufficient buckle locking strength, this locking component has a uniform locking force, is not prone to loosening after long-term use, is suitable for different load scenarios, and significantly expands its application range.

Description

Technical Field

[0001] This utility model relates to the field of mechanical connection fastener technology, specifically a connecting locking component for telescopic parts. Background Technology

[0002] Telescopic structures are widely used in many fields such as machinery, furniture, and medical devices. Examples include adjustable-length brackets, lifting rods, and folding rods. These structures typically require connecting locking devices to fix the length and lock the position of two telescopic components, ensuring the stability and safety of the overall structure. Currently, common locking methods for telescopic components on the market include threaded locking, bolt tightening, and snap-locking. Threaded locking requires rotating components to achieve locking, which may require significant torque during operation and is prone to thread wear and loosening over time. Bolt tightening, while simple in structure, is difficult to control precisely; excessive tightening force can damage the surface of the telescopic component, while insufficient force fails to achieve stable locking. Snap-locking, on the other hand, suffers from low locking strength and is only suitable for low-load applications. Under significant external forces, the snap-lock is prone to detachment, posing a safety hazard. In addition, most existing connecting locking components are structurally complex, and the installation and disassembly process is cumbersome, which is not conducive to later maintenance and adjustment; therefore, a connecting locking component for telescopic parts is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a connecting and locking component for telescopic parts in order to solve the above problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a connecting locking member for a telescopic component, comprising a locking sleeve sleeved on the outer telescopic component, characterized in that: it further comprises a locking member rotatably connected to the locking sleeve and driven by a lever principle to radially contract inward to fix the inner telescopic component and the outer telescopic component relative to each other; the locking member comprises a driving member whose one end is rotatably connected to the first end of the locking sleeve and a tensioning member whose one end is rotatably connected to the second end of the locking sleeve and whose other end is connected to the driving member and driven by the driving member to drive both ends of the locking sleeve to radially contract inward to lock the inner telescopic component and the outer telescopic component.

[0005] Preferably, it also includes a limiting block disposed on the inner wall of one end of the locking sleeve to limit the axial installation position of the locking sleeve on the outer telescopic member.

[0006] Preferably, the locking sleeve has a C-shaped or U-shaped structure, and its radial sidewalls are respectively provided with a first locking groove for inserting a tensioning member and a second locking groove for inserting a driving member.

[0007] Preferably, one end of the drive member is provided with a groove extending radially therein for the insertion of one end of the tensioning member.

[0008] Preferably, the tensioning member, the driving member, and the locking sleeve are each provided with a plurality of mating through holes.

[0009] Preferably, the locking sleeve and the tensioning member are rotatably connected by a first rotating shaft passing through the corresponding through holes of both.

[0010] Preferably, the locking sleeve and the driving component are rotatably connected by a second rotating shaft passing through the corresponding through holes of both.

[0011] Preferably, the driving member and the tensioning member are rotatably connected by a third rotating shaft passing through the corresponding through holes of both.

[0012] Preferably, one end of the tensioning member is provided with a threaded hole that communicates with the through hole through which the first rotating shaft passes.

[0013] Preferably, the end of the external telescopic member connected to the locking sleeve has at least one slot along the axial direction for the locking sleeve to retract inward.

[0014] The beneficial effects of this utility model are as follows: By setting the locking component, the three-point rotation linkage of the tensioning component, the driving component, and the locking sleeve can be achieved by manually pressing the driving component, which in turn drives the locking sleeve to tighten inward. In conjunction with the pre-set groove elastic structure at the end of the outer telescopic component, the tightening force of the locking sleeve can drive the outer telescopic component to contract radially, thereby tightly gripping the inner telescopic component, ultimately forming a double locking effect of "the locking sleeve gripping the outer telescopic component, and the outer telescopic component gripping the inner telescopic component". This locking component does not require any tools and can be completed manually throughout the process. Compared with the traditional threaded locking which requires a large torque and has insufficient buckle locking strength, this locking component has a more uniform locking force and is less prone to loosening after long-term use. It can be adapted to different load scenarios, from light furniture supports to medium-sized mechanical rods, significantly expanding its application range. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall opening structure of this utility model; Figure 2 This is a top view of the overall locking mechanism of this utility model; Figure 3 This is a schematic diagram of the locking sleeve structure of this utility model; Figure 4 This is a schematic diagram of the tensioning component structure of this utility model; Figure 5 This is a schematic diagram of the drive component structure of this utility model.

[0016] Legend: 1. Locking sleeve; 11. First locking groove; 12. Second locking groove; 2. Locking component; 21. Tensioning component; 22. Driving component; 221. Groove; 3. Limiting block; 4. Through hole; 5. First rotating shaft; 6. Second rotating shaft; 7. Third rotating shaft; 8. Threaded hole. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, further illustrates the connecting and locking mechanism of the telescopic component according to this utility model.

[0018] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] See appendix Figure 1-5 As shown, in this embodiment, a connecting locking component for a telescopic member includes a locking sleeve 1 sleeved on the outer telescopic member. The characteristic feature is that it further includes a locking component 2 rotatably connected to the locking sleeve 1 and driven by a lever principle to radially contract inwards, fixing the inner telescopic member and the outer telescopic member relative to each other. The locking component 2 includes a driving component 22 with one end rotatably connected to the first end of the locking sleeve 1 and a tensioning component 21 with one end rotatably connected to the second end of the locking sleeve 1 and its other end connected to and driven by the driving component 22, thereby driving both ends of the locking sleeve 1 to radially contract inwards, thus locking the inner and outer telescopic members.

[0021] The telescopic component comprises two parts: an inner telescopic component with a smaller diameter and an outer telescopic component with a larger diameter. The end of the outer telescopic component connected to the locking sleeve 1 has at least one slot along the axial direction for the locking sleeve 1 to retract inwards. This slot creates a radially retractable elastic structure at that end of the outer telescopic component. During assembly, the locking sleeve 1 is fitted onto one end of the outer telescopic component, and the inner telescopic component is inserted into the outer telescopic component. After the relative positions of the two telescopic components are adjusted and determined, the driving component 22 is pressed towards the locking sleeve 1. When the driving component 22 rotates around its rotational connection point with the locking sleeve 1, it simultaneously drives one end of the tensioning component 21 to rotate around its rotational connection point with the locking sleeve 1. The other end of the tensioning component 21 is pulled towards the first end of the locking sleeve 1 by the driving component 22, thereby driving both ends of the locking sleeve 1 to contract radially inward, so that the locking sleeve 1 hugs the outer telescopic component. Due to the slot provided at the end of the outer telescopic component, under the action of the clamping force of the locking sleeve 1, the end of the outer telescopic component contracts radially, thereby hugging the inner telescopic component inward, and finally achieving a stable lock between the two telescopic components.

[0022] With the locking component 2 in place, the tensioning component 21, the driving component 22, and the locking sleeve 1 rotate in a three-point linkage. Simply pressing the driving component 22 manually will drive the locking sleeve 1 to tighten inward through the linkage. In conjunction with the pre-set groove elastic structure at the end of the outer telescopic component, the tightening force of the locking sleeve 1 can drive the outer telescopic component to contract radially, thereby tightly gripping the inner telescopic component, ultimately forming a double locking effect of "locking sleeve 1 gripping the outer telescopic component, and the outer telescopic component gripping the inner telescopic component". This locking component 2 can be completed manually without the aid of any tools. Compared with the traditional threaded locking which requires a large torque and has insufficient locking strength, this locking component has a more uniform locking force and is less prone to loosening after long-term use. It can be adapted to different load scenarios, from light furniture supports to medium-sized mechanical rods, significantly expanding its practical application range.

[0023] See appendix Figure 1-4 As shown, it also includes a limiting block 3 disposed on the inner wall of one end of the locking sleeve 1 to limit the axial installation position of the locking sleeve 1 on the outer telescopic member; by setting the limiting block 3, it abuts against the end of the outer telescopic member when the locking sleeve 1 is installed, so as to limit the assembly position of the locking sleeve 1 on the outer telescopic member. See appendix Figure 1-4 As shown, the locking sleeve 1 has a C-shaped or U-shaped structure, and its radial sidewalls are respectively provided with a first locking groove 11 for the tensioning member 21 to be inserted and a second locking groove 12 for the driving member 22 to be inserted; one end of the driving member 22 is provided with a groove 221 extending radially therein for one end of the tensioning member 21 to be inserted; one end of the tensioning member 21 is inserted into the first locking groove 11 on the locking sleeve 1, and the other end is inserted into the groove 221 at one end of the driving member 22, and the other end of the driving member 22 is inserted into the second locking groove 12 of the locking sleeve 1, thereby realizing the installation of the locking member 2 on the locking sleeve 1.

[0024] See appendix Figure 1-4 As shown, the tensioning member 21, the driving member 22, and the locking sleeve 1 are each provided with a plurality of mating through holes 4; the locking sleeve 1 and the tensioning member 21 are rotatably connected by a first rotating shaft 5 passing through the corresponding through holes 4; the locking sleeve 1 and the driving member 22 are rotatably connected by a second rotating shaft 6 passing through the corresponding through holes 4; and the driving member 22 and the tensioning member 21 are rotatably connected by a third rotating shaft 7 passing through the corresponding through holes 4.

[0025] After one end of the tensioning member 21 is inserted into the first locking groove 11 of the locking sleeve 1, the first rotating shaft 5 is inserted into the through hole 4 at the second end of the locking sleeve 1 and one end of the tensioning member 21; one end of the driving member 22 with the groove 221 is inserted into the second locking groove 12 at the first end of the locking sleeve 1, and the second rotating shaft 6 is inserted into the through hole 4 at the first end of the locking sleeve 1 and the driving member 22; so that the tensioning member 21 and one end of the locking sleeve 1, and the driving member 22 and the other end of the locking sleeve 1 are respectively rotatably connected; the other end of the tensioning member 21 is inserted into the groove 221 on the driving member 22, and the third rotating shaft 7 is inserted into the through hole 4 on the driving member 22 and the tensioning member 21, forming a three-point rotatable connection structure through the first rotating shaft 5, the second rotating shaft 6 and the third rotating shaft 7.

[0026] See appendix Figure 4 As shown, one end of the tensioning member 21 is provided with a threaded hole 8 that communicates with the through hole 4 through which the first rotating shaft 5 passes; a screw is screwed into the threaded hole 8, and the end of the screw is pressed against the first rotating shaft 5 by rotating the screw, so that the rotation tightness between the tensioning member 21 and the locking sleeve 1 can be adjusted.

[0027] In the process of using this utility model, firstly, the locking member 2 and the locking sleeve 1 are assembled. One end of the tensioning member 21 is inserted into the first locking groove 11 of the locking sleeve 1, aligning the through holes 4 of both and inserting the first rotating shaft 5. Then, one end of the driving member 22 with the groove 221 is inserted into the second locking groove 12 of the locking sleeve 1, aligning the through hole 4 and inserting the second rotating shaft 6. Finally, the other end of the tensioning member 21 is inserted into the groove 221 of the driving member 22, aligning the through hole 4 and inserting the third rotating shaft 7, forming a three-point rotation structure. If it is necessary to adjust the rotation tightness, a screw can be screwed into the threaded hole 8 of the tensioning member 21, and the screw can be rotated to tighten or loosen the first rotating shaft 5 until the rotation feels smooth.

[0028] Take the outer telescopic component with a larger diameter, and insert the pre-installed locking sleeve 1 into one end of the outer telescopic component with a slot until the end of the outer telescopic component abuts against the limiting block 3 on the inner wall of the locking sleeve 1. At this time, the position of the locking sleeve 1 is fixed. Then slowly insert the inner telescopic component with a smaller diameter into the outer telescopic component. Adjust the extension length of the two telescopic components according to the actual use requirements. After determining the position, keep the inner and outer telescopic components relatively stationary.

[0029] Press the end of the drive member 22 away from the locking sleeve 1 with your hand. Under the action of the lever, the drive member 22 rotates around the second rotating shaft 6 towards the locking sleeve 1. At the same time, the tensioning member 21 is pulled through the third rotating shaft 7, so that the tensioning member 21 rotates synchronously around the first rotating shaft 5. As both rotate, the two ends of the locking sleeve 1 gradually tighten radially inward, generating a uniform clamping force on the sleeved outer telescopic member. Due to the elastic structure of the end slot of the outer telescopic member, it contracts radially under the action of the clamping force, and then clamps the inner telescopic member inward, finally completing the double locking of the two telescopic members.

[0030] If the length of the telescopic component needs to be adjusted, manually reverse the direction of the drive component 22 away from the locking sleeve 1, causing the drive component 22 to rotate around the second pivot 6 in a direction away from the locking sleeve 1. The tensioning component 21 rotates in the opposite direction around the first pivot 5 under the drive of the third pivot 7. The clamping force of the locking sleeve 1 gradually disappears, the outer telescopic component returns to its original state, and the inner telescopic component is released. At this time, the inner and outer telescopic components can be freely pulled to adjust the length. After the adjustment is completed, repeat the locking operation to fix it again.

[0031] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A connecting locking piece of a telescopic member, comprising a locking sleeve (1) sleeved on an outer telescopic member, characterized in that: It also includes a locking member (2) that is rotatably connected to the locking sleeve (1) and drives the locking sleeve (1) to contract radially inward to fix the inner telescopic member and the outer telescopic member relative to each other through the lever principle; the locking member (2) includes a driving member (22) with one end rotatably connected to the first end of the locking sleeve (1) and a tensioning member (21) with one end rotatably connected to the second end of the locking sleeve (1) and the other end connected to the driving member (22) and driven by the driving member (22) to drive the two ends of the locking sleeve (1) to contract radially inward to lock the inner telescopic member and the outer telescopic member.

2. A locking device for a telescopic member according to claim 1, characterized in that: It also includes a limiting block (3) set on the inner wall of one end of the locking sleeve (1) to limit the axial installation position of the locking sleeve (1) on the outer telescopic member.

3. A locking device for a telescopic member according to claim 2, wherein: The locking sleeve (1) is a C-shaped or U-shaped structure, and a first locking groove (11) for inserting the tensioning member (21) and a second locking groove (12) for inserting the driving member (22) are respectively opened on its radial side wall.

4. A locking device for a telescopic member according to claim 1, characterized in that: The drive member (22) has a groove (221) extending radially therein for inserting one end of the tensioning member (21).

5. A locking device for a telescopic member according to claim 1, characterized in that: The tensioning member (21), the driving member (22) and the locking sleeve (1) are respectively provided with a number of matching through holes (4).

6. A locking device for a telescopic member according to claim 5, wherein: The locking sleeve (1) and the tensioning member (21) are rotatably connected by a first rotating shaft (5) that passes through the corresponding through holes (4) of both.

7. A locking device for a telescopic member according to claim 5, wherein: The locking sleeve (1) and the driving member (22) are rotatably connected by a second rotating shaft (6) that passes through the corresponding through holes (4) of both.

8. A locking device for a telescopic member according to claim 5, characterized in that: The drive member (22) and the tensioning member (21) are rotatably connected by a third rotating shaft (7) that passes through the corresponding through holes (4) of both.

9. A locking device for a telescopic member according to claim 8, wherein: The tensioning member (21) has a threaded hole (8) at one end that is connected to the through hole (4) through which the first rotating shaft (5) passes.

10. A locking device for a telescopic member according to claim 1, characterized in that: The end of the external telescopic member connected to the locking sleeve (1) is provided with at least one slot along the axial direction for the locking sleeve (1) to retract inward.

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