Telescopic rod locking structure

Abstract

The utility model discloses a telescopic link locking structure, through unilateral button design, user only needs single finger to press to can synchronous release the locking state of both sides clamping block, realizes the quick length adjustment of telescopic link, compared with traditional screw thread or partial side operation structure, the operation flow is greatly simplified, and the efficiency is improved obviously, utilize the gear meshing principle of rack and pivot wall recess, the linear motion of button is accurately converted into the rotary motion of pivot, thereby receiving and drawing the connection rope, and this kind of transmission mode is high in efficiency, and response is fast, and the key transmission component wear is small, and effectively prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the technical field of telescopic rod locking components, specifically a telescopic rod locking structure. Background Technology

[0002] Telescopic rods, due to their adjustable length, are widely used in daily life and industrial production, such as cleaning tools, fitness equipment, photographic support equipment, and adjustable furniture. Currently, there are various locking methods for telescopic rods, among which the most common include threaded tightening, spring pin tightening, and cam-clamping. The threaded tightening structure uses a rotating sleeve to press the inner rod against its internal threaded bevel. While this provides a large locking force, it requires multiple rotations during adjustment, making it cumbersome and inefficient. The spring pin tightening structure uses spring force to engage the pin in the positioning hole of the inner rod. Although this allows for quick positioning, the pin is prone to dislodgement or wear under large axial forces, leading to unreliable locking and potential safety hazards. The cam-clamping structure, after frequent use, is prone to wear on its cam component, resulting in decreased locking force and insufficient stability. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses a telescopic rod locking structure. The technical solution adopted includes a fixed sleeve part and an extension rod part. Since telescopic rods are already mature existing technology, for ease of understanding, this technical solution also describes and explains the fixed sleeve part and the extension rod part. However, for the sake of understanding the locking component, the specific working principle and working transmission components of the telescopic rod will not be described in detail. Instead, the locking component will be described. The locking part includes a lateral axial groove, a limiting protrusion, a circumferential groove, an integrated box, a button, a button spring, a wire channel, a connecting groove, a locking block, a locking block mounting structure, a connecting rope, a wire channel opening in the middle, wiring, and a winding and coiling part. The extension rod part extends from the fixed sleeve part. The outer wall of the opening of the fixed sleeve part is integrally formed into an integrated box. Several circumferential grooves are distributed on the side of the extension rod part. The sleeve has a recessed side axial groove and an integrally formed limiting protrusion on its inner wall. This limiting protrusion engages with the side axial groove to prevent the extension rod from rotating inside the sleeve. A button is fixedly connected to the outside of the integrated box via a spring. The button is made of hard rubber and is normally in a pop-out position. A semi-circular arc-shaped cable track is located on the inner wall of the integrated box. Both ends of the cable track connect to the inside of the integrated box through holes. A connecting groove is opened on the inner side of the integrated box, through which a locking block installation structure inside the box passes and secures the locking block at its insertion end. The locking block engages in a circumferential groove. An opening is located in the middle of the cable track, through which a connecting rope passes. Both ends are connected to the locking block installation structure. One end of the cable is fixedly connected to the middle of the connecting rope, while the other end extends into the integrated box from the opening in the middle of the cable track and connects to a winding and coiling part inside the integrated box. When the button is pressed, the winding and coiling part rotates, tightening the cable. The cable then pulls the middle part of the connecting rope, causing both ends of the rope to move inwards (towards the middle of the cable track) simultaneously. The rope is connected to a control mechanism at both ends. When this mechanism is pulled inward, the lock disengages from the circumferential groove, unlocking the lever. Releasing the button causes the spring to return the lever to its original position, and the lock pops out again and engages with the nearest groove, locking the lever in place.

[0004] As a preferred technical solution of this utility model, the locking block installation structure installs the locking block. Specifically, the internal insertion rod passes through the through slot, and the inner end of the internal insertion rod is integrally formed into the locking block. The outer end face of the internal insertion rod has a blind hole for the insertion rod. The outer end of the insertion rod stabilizing shaft is fixed to the inner wall of the outer part of the integrated box, and the inner end is inserted into the blind hole of the insertion rod. The outer end face of the internal insertion rod is connected to the inner wall of the outer part of the integrated box by the insertion rod spring. The insertion rod spring is entirely sleeved on the outside of the insertion rod stabilizing shaft. One end of the spring rests on the inner wall of the box, and the other end rests on the internal insertion rod. The force of this spring always attempts to push the internal insertion rod and the locking block at its front end outward so that it is locked into the groove. The upper and lower internal insertion rods are connected by a connecting plate. The two internal insertion rods are connected together to ensure that they move synchronously. The two ends of the connecting rope are respectively fixed to the center of the outer side of the connecting plate on the left and right sides.

[0005] As a preferred embodiment of this invention, the winding and take-up section includes a rotating shaft, a fitting ring, an arc-shaped groove on the rotating shaft wall, and a toothed rod. The rotating shaft is a rotatable shaft, with its upper and lower ends mounted inside the box via fitting rings (equivalent to bearing seats). The arc-shaped groove on the rotating shaft wall has a ring-shaped groove on its outer wall, with toothed grooves machined on its inner side wall. The toothed rod is like a small toothed stick, with its inner teeth meshing with the toothed grooves in the arc-shaped groove on the rotating shaft wall. The outer end of the toothed rod passes through a window on the box and is fixedly connected to the button 7 on the outside. When the button is pressed, the toothed rod moves in a straight line inward. Because its teeth mesh with the toothed grooves on the rotating shaft, it drives the rotating shaft to rotate. The inner end of the wire is connected to the rotating shaft. As the rotating shaft rotates, it winds up the wire, thus shortening it.

[0006] As a preferred embodiment of this invention, the outer diameter of the rotating shaft is consistent with the inner diameter of the mounting ring.

[0007] As a preferred technical solution of this utility model, the inner end face of the rack has an elongated blind hole, and a rack stabilizing shaft is fixed on the outer wall of the inner side of the integrated box at the position corresponding to the elongated blind hole, with the outer end of the rack stabilizing shaft inserted into the elongated blind hole.

[0008] The beneficial effects of this utility model are as follows: With the single-sided button design, the user only needs to press with one finger to simultaneously release the locking state of the two side blocks, realizing rapid length adjustment of the telescopic rod. Compared with the traditional screw tightening or split-side operation structure, the operation process is greatly simplified and the efficiency is significantly improved. By utilizing the gear meshing principle of the toothed rod and the groove of the rotating shaft wall, the linear motion of the button is accurately converted into the rotational motion of the rotating shaft, thereby pulling and retracting the connecting rope. This transmission method is highly efficient, has a fast response, and the key transmission components have less wear, effectively extending the service life. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the front structure of this utility model.

[0011] Figure 3 This is a cross-sectional view of the right side of the structure of this utility model.

[0012] In the diagram: 1. Fixed sleeve part; 2. Extended rod part; 3. Lateral axial groove; 4. Limiting protrusion; 5. Circumferential groove; 6. Integrated box; 7. Button; 8. Button spring; 9. Wire channel; 10. Connecting groove; 11. Locking block; 12. Internal insertion rod; 13. Insertion rod blind hole; 14. Insertion rod stabilizing shaft; 15. Insertion rod spring; 16. Connecting plate; 17. Connecting rope; 18. Wire channel center opening; 19. Wiring; 20. Rotating shaft; 21. Fitting ring; 22. Rotating shaft wall arc groove; 23. Toothed rod. Detailed Implementation

[0013] Example 1

[0014] like Figures 1 to 3 As shown, this utility model discloses a telescopic rod locking structure. The technical solution adopted includes a fixed sleeve part 1, an extended rod part 2, a lateral axial groove 3, a limiting protrusion 4, a circumferential groove 5, an integrated box 6, a button 7, a button spring 8, a cable channel 9, a connecting groove 10, a locking block 11, a locking block mounting structure, a connecting rope 17, a cable channel opening 18, a wiring 19, and a winding and coiling part. The extended rod part 2 extends from the fixed sleeve part 1. The outer wall of the opening of the fixed sleeve part 1 is integrally formed with an integrated box 6. The side of the extended rod part 2 is distributed with several circumferential grooves 5 and has a lateral axial groove 3. The inner wall of the fixed sleeve part 1 is integrally formed with a limiting protrusion 4, and the limiting protrusion 4 is fastened. In the lateral axial groove 3, the button 7 is fixedly connected to the outside of the integrated box 6 by the button spring 8. A semi-circular arc-shaped wire channel 9 is provided in the inner wall of the integrated box 6. The two ends of the wire channel 9 are connected to the inside of the integrated box 6 through holes. A connecting groove 10 is opened on the inner side of the integrated box 6. The locking block installation structure provided in the integrated box 6 passes through this groove and fixes the locking block 11 at the extended end. The locking block 11 is locked in the circumferential groove 5. A wire channel opening 18 is opened in the middle of the wire channel 9. The connecting rope 17 passes through the wire channel 9 and is connected to the locking block installation structure at both ends. One end of the wire connector 19 is fixedly connected to the middle of the connecting rope 17, and the other end extends into the integrated box 6 from the wire channel opening 18 and is connected to the winding and take-up part provided in the integrated box 6.

[0015] As a preferred technical solution of this utility model, the block installation structure is specifically designed such that the internal insertion rod 12 passes through the through slot 10, the inner end of the internal insertion rod 12 is integrally formed into a block 11, the outer end face of the insertion rod has a blind hole 13, the outer end of the insertion rod stabilizing shaft 14 is fixed to the inner wall of the outer part of the integrated box 6, and the inner end is inserted into the blind hole 13. The outer end face of the internal insertion rod 12 is connected to the inner wall of the outer part of the integrated box 6 by an insertion rod spring 15. The insertion rod spring 15 is sleeved on the outside of the insertion rod stabilizing shaft 14. The upper and lower internal insertion rods 12 are connected by a connecting plate 16, and the two ends of the connecting rope 17 are respectively fixed to the center of the outer side of the connecting plate 16 on the left and right sides.

[0016] As a preferred technical solution of this utility model, the winding and coiling part can tighten the connecting rope. Specifically, the upper and lower surfaces of the integrated box 6 are integrally formed with fitting rings 21. The upper and lower ends of the rotating shaft 20 are inserted into the fitting rings 21. The outer wall of the rotating shaft 20 has an arc groove 22 on the upper side. Several teeth are opened on the inner side wall of the arc groove 22. The toothed rod 23 meshes with the teeth. The outer end extends out from the window on the outer wall of the integrated box 6 and is fixedly connected to the button 7. The inner end of the wiring 19 is connected to the rotating shaft 20.

[0017] As a preferred technical solution of this utility model, the outer diameter of the rotating shaft 20 is consistent with the inner diameter of the mounting ring 21.

[0018] As a preferred technical solution of this utility model, the inner end face of the toothed bar 23 has an elongated blind hole, and the toothed bar stabilizing shaft 231 is fixed on the outer wall of the inner part of the integrated box 6 at the position corresponding to the elongated blind hole, and the outer end of the toothed bar stabilizing shaft 231 is inserted into the elongated blind hole.

[0019] The working principle of this invention is as follows: When the length of the rod needs to be adjusted, the user presses the button. The button moves inward against the elastic force of the button spring, causing the toothed rod fixed to it to move inward. The inner teeth of the toothed rod mesh with the tooth groove in the arc groove of the rotating shaft wall, thereby driving the rotating shaft to rotate. When the rotating shaft rotates, it winds and tightens the wire fixed on it. When the wire is tightened, it pulls the middle part of the connecting rope upward through the opening in the middle of the wire channel. The two ends of the connecting rope are respectively fixed to the connecting plates on the left and right sides. When the middle of the rope is pulled upward, its two ends slide towards the center along the semi-circular wire channel, thereby pulling the connecting plates on both sides and the internal insert rod outward (i.e., towards the outside of the box). This action compresses the insert rod spring and causes the locking block to disengage from the circumferential groove, releasing the lock on the extension rod. At this point, the user can freely pull the extension rod to the desired length. Once the appropriate length is reached, release the button. Under the action of the button spring, the button and the gear will reset, the shaft will lose its drive, and under the action of the internal mechanism (or a slight external force), it will rotate slightly to loosen the wiring. At the same time, the elasticity of the insertion rod spring will play a role again, pushing the internal insertion rod and the locking block to move inward, so that the locking block is engaged in the currently aligned circumferential groove, and the rod will be reliably locked again.

[0020] Components not described in detail in this article are existing technologies.

[0021] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A telescopic rod locking structure, comprising a fixed sleeve portion (1) and an extended rod portion (2), characterized in that: The device includes a lateral axial groove (3), a limiting protrusion (4), a circumferential groove (5), an integrated box (6), a button (7), a button spring (8), a cable channel (9), a connecting groove (10), a locking block (11), a locking block mounting structure, a connecting rope (17), a cable channel opening (18), a wiring connection (19), and a winding and coiling section; the protruding rod part (2) extends from the fixed sleeve part (1), and the outer wall of the fixed sleeve part (1) is integrally formed with an integrated box (6); the protruding rod part (2) has several circumferential grooves (5) distributed on its side and a lateral axial groove (3); the inner wall of the fixed sleeve part (1) is integrally formed with a limiting protrusion (4), which is fastened in the lateral axial groove (3); the integrated box (6) is externally connected to the button. A spring (8) is fixedly connected to a button (7); a semi-circular arc-shaped wire channel (9) is provided in the inner wall of the integrated box (6), and the two ends of the wire channel (9) are connected to the inside of the integrated box (6) through holes; a connecting groove (10) is opened on the inner side of the integrated box (6), and a locking block installation structure provided in the integrated box (6) passes through this groove and fixes the locking block (11) at the extended end. The locking block (11) is locked in the circumferential groove (5); a wire channel opening (18) is opened in the middle of the wire channel (9), and a connecting rope (17) passes through the wire channel (9), with both ends connected to the locking block installation structure; one end of the wire connector (19) is fixedly connected to the middle of the connecting rope (17), and the other end extends into the integrated box (6) from the wire channel opening (18) and is connected to the winding and take-up part provided in the integrated box (6).

2. The telescopic rod locking structure according to claim 1, characterized in that: The mounting structure includes an internal insert rod (12), an insert rod blind hole (13), an insert rod stabilizing shaft (14), an insert rod spring (15), and a connecting plate (16). The internal insert rod (12) passes through the through slot (10), and the inner end of the internal insert rod (12) is integrally formed into a locking block (11), while the outer end face has an insert rod blind hole (13). The outer end of the insert rod stabilizing shaft (14) is fixed to the inner wall of the outer part of the integrated box (6), and the inner end is inserted into the insert rod blind hole (13). The outer end face of the internal insert rod (12) is connected to the inner wall of the outer part of the integrated box (6) through the insert rod spring (15). The insert rod spring (15) is entirely sleeved on the outside of the insert rod stabilizing shaft (14). The upper and lower internal insert rods (12) are connected by the connecting plate (16). The two ends of the connecting rope (17) are respectively fixed at the center of the outer side of the connecting plate (16) on the left and right sides.

3. The telescopic rod locking structure according to claim 1, characterized in that: The button (7) is made of hard rubber material.

4. The telescopic rod locking structure according to claim 1, characterized in that: The winding and take-up section includes a rotating shaft (20), a fitting ring (21), a circular arc groove (22) on the rotating shaft wall, and a toothed bar (23); the upper and lower surfaces of the integrated box (6) are integrally formed with fitting rings (21), and the upper and lower ends of the rotating shaft (20) are fitted into the fitting rings (21); the outer wall of the rotating shaft (20) has a circular arc groove (22) on the upper side, and several toothed grooves are opened on the inner side wall of the circular arc groove (22). The toothed bar (23) meshes with the toothed grooves, and its outer end extends out from the window on the outer wall of the integrated box (6) and is fixedly connected to the button (7); the inner end of the wiring (19) is connected to the rotating shaft (20).

5. The telescopic rod locking structure according to claim 4, characterized in that: The outer diameter of the rotating shaft (20) is the same as the inner diameter of the fitting ring (21).

6. The telescopic rod locking structure according to claim 4, characterized in that: The inner end face of the rack (23) has an elongated blind hole. A rack stabilizing shaft (231) is fixed on the outer wall of the inner part of the integrated box (6) at the position corresponding to the elongated blind hole. The outer end of the rack stabilizing shaft (231) is inserted into the elongated blind hole.

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