A multi-stage telescopic tube locking mechanism with a key unlocking function

Abstract

The utility model discloses a kind of multi-stage telescopic pipe locking mechanisms with one-key unlocking function, including first bar, sliding seat, second bar, base, third bar, first locking structure is equipped between sliding seat and first bar, second locking structure is equipped between third bar and base, linkage structure is equipped between second locking structure and first locking structure;First locking structure includes first clamping block, pull rod, the front end of pull rod is rotatably connected with has snap buckle;Linkage structure includes linkage rod, the upper end of linkage rod is equipped with upper conversion head, and it is equipped on first clamping block with tongue, and first transmission structure is equipped between tongue and upper conversion head;Second locking structure includes second clamping block, the lower end of linkage rod is equipped with lower conversion head, and second transmission structure is equipped between lower conversion head and second clamping block.The utility model has the advantages of more convenient operation, simpler structure, better user experience.

Description

Technical Field

[0001] This utility model relates to the technical field of telescopic tube locking mechanisms, and in particular to a multi-level telescopic tube locking mechanism with a one-button unlocking function. Background Technology

[0002] Currently, common multi-stage telescopic tube locking mechanisms typically use independent locking structures to connect each telescopic tube section. The disadvantages of this structure are: cumbersome operation—each telescopic tube section requires individual locking and unlocking, leading to low operational efficiency when rapid length adjustments or frequent length switching are needed; and poor interoperability—the lack of linkage between the various locking structures prevents one-button locking or unlocking, resulting in a poor user experience.

[0003] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multi-level telescopic tube locking mechanism with one-click unlocking function that is more convenient to operate, simpler in structure, and provides a better user experience.

[0005] This utility model is achieved through the following technical solution:

[0006] To solve the above technical problems, this utility model provides a multi-level telescopic tube locking mechanism with one-button unlocking function, including a first rod, a sliding seat slidably connected to the first rod, a second rod provided on the sliding seat, a base provided on the second rod, a third rod slidably connected to the base, a first locking structure between the sliding seat and the first rod, a second locking structure between the third rod and the base, and a linkage structure between the second locking structure and the first locking structure;

[0007] The first locking structure includes a first clamping block that can move back and forth relative to the sliding seat and cooperate with the sliding seat to clamp the first rod. A pull rod extending forward is connected to the first clamping block. The sliding seat is provided with a through hole for the pull rod to pass through. The front end of the pull rod is rotatably connected to a lever for driving the pull rod to move back and forth. Operating the lever can realize one-click locking or unlocking of the first locking structure and the second locking structure.

[0008] The linkage structure includes a linkage rod that can be raised and lowered relative to the sliding seat and the base. The upper end of the linkage rod is provided with an upper conversion head. The first clamping block is provided with a tongue for driving the linkage rod to rise and fall. Between the tongue and the upper conversion head is a first transmission structure for converting the forward and backward movement of the first clamping block into the lifting and lowering of the linkage rod.

[0009] The second locking structure includes a second clamping block that is movably connected to the base and cooperates with the base to clamp the third rod. The lower end of the linkage rod is provided with a lower conversion head. A second transmission structure is provided between the lower conversion head and the second clamping block for converting the lifting and lowering of the linkage rod into clamping or loosening of the second clamping block.

[0010] In order to further solve the technical problem to be solved by this utility model, this utility model provides a multi-stage telescopic tube locking mechanism with one-key unlocking function. The first transmission structure includes a first driving slope on the tongue, and the upper conversion head is provided with a groove for the tongue to be inserted. The upper part of the groove is provided with a slope-shaped structure or roller that can cooperate with the first driving slope.

[0011] To further address the technical problems addressed by this utility model, a multi-stage telescopic tube locking mechanism with a one-button unlocking function is provided. The second transmission structure includes a second driving inclined surface on the lower conversion head. A pin is provided between the upper part of the second clamping block and the base to rotatably connect them, allowing the lower part of the second clamping block to swing inwards and outwards. The outer side of the lower part of the second clamping block has a contact portion that abuts against the second driving inclined surface, and the inner side of the lower part of the second clamping block has a clamping portion that presses against the outer wall of the third rod. When the lower conversion head rises with the linkage rod, the second driving inclined surface presses against the contact portion towards the third rod, causing the lower part of the second clamping block to swing inwards, thereby causing the clamping portion to press against and lock the third rod. When the lower conversion head descends with the linkage rod, the lower conversion head releases the third rod.

[0012] To further address the technical problems addressed by this utility model, a multi-stage telescopic tube locking mechanism with a one-button unlocking function is provided. The lower conversion head is slidably connected to the base in the vertical direction, and is sleeved on the lower part of the linkage rod, allowing it to move vertically along the rod. An elastic reset member is provided between the lower conversion head and the linkage rod to elastically press the lower conversion head downwards. A first adjusting nut is threaded to the lower end of the linkage rod, supporting the lower conversion head and adjusting its height.

[0013] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a multi-level telescopic tube locking mechanism with one-key unlocking function, wherein the contact part is a convex shape with rounded corners and the clamping part is arc-shaped.

[0014] To further address the technical problems addressed by this utility model, this utility model provides a multi-stage telescopic tube locking mechanism with a one-button unlocking function. The rear end of the pull rod is provided with a threaded portion, and a second adjusting nut for adjusting the stroke of the pull rod is threadedly connected to the threaded portion and used to block the rear side of the through hole.

[0015] To further address the technical problems addressed by this utility model, this utility model provides a multi-stage telescopic tube locking mechanism with a one-button unlocking function. In this mechanism, the second adjusting nut is a flower-shaped nut with multiple recesses evenly distributed around its periphery. The first clamping block is also provided with several threaded holes located on one side of the second adjusting nut. Anti-loosening screws are connected to the threaded holes. The anti-loosening screws are engaged in the recesses around the second adjusting nut, and the nuts of the anti-loosening screws are blocked on the rear side of the second adjusting nut.

[0016] In order to further solve the technical problems to be solved by this utility model, this utility model provides a multi-stage telescopic tube locking mechanism with one-key unlocking function, wherein the first clamping block is provided with a clamping surface that can abut against the outer wall of the first rod.

[0017] In order to further solve the technical problems to be solved by this utility model, the clamping surface of the multi-level telescopic tube locking mechanism with one-key unlocking function provided by this utility model is an arc-shaped surface.

[0018] In order to further solve the technical problem to be solved by this utility model, this utility model provides a multi-level telescopic tube locking mechanism with one-key unlocking function, wherein the first rod is provided with two parallel and spaced-apart members, the sliding seat is laterally arranged between the two first rods, and the two ends of the first clamping block are respectively provided with clamping surfaces that can abut against the outer sidewalls of different first rods.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. This utility model features a linkage structure that connects the first locking structure and the second locking structure, enabling one-click locking and unlocking of the multi-stage telescopic tube, greatly simplifying the operation process and improving the user experience.

[0021] 2. In this utility model, the first transmission structure converts the linear movement of the first clamping block into the lifting motion of the linkage rod through the design of the tongue and the upper conversion head. This structural design is compact and efficient, ensuring the synchronization and reliability of the locking and unlocking actions.

[0022] 3. In this utility model, the second transmission structure creatively combines the principles of inclined plane and lever, making it easier and smoother to lock and unlock the third lever. The inclined plane structure can effectively transmit force, while the lever structure further amplifies the torque, thereby reducing the force required for operation while ensuring locking strength and improving the ease of use of the product. Attached Figure Description

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is an exploded view of the present invention;

[0026] Figure 3 This is a cross-sectional view of the first locking structure;

[0027] Figure 4 This is a three-dimensional structural diagram of the first locking structure.

[0028] Figure 5 This is a decomposed schematic diagram of the linkage structure;

[0029] Figure 6 This is an exploded view of the second locking structure;

[0030] Figure 7 This is a cross-sectional view of the second locking structure. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1-7 As shown, this utility model provides a multi-stage telescopic tube locking mechanism with a one-button unlocking function. Its core lies in achieving synchronous locking and unlocking of multiple telescopic tubes through a linkage structure. The mechanism mainly includes a first rod 1, a sliding seat 2, a second rod 3, a base 4, and a third rod 5. The first rod 1 constitutes the first-stage rod and is the foundation of the entire telescopic structure. The sliding seat 2 is sleeved on the first rod 1 and can slide freely along the axial direction of the first rod 1. The second rod 3 serves as the second-stage rod; its upper end is fixedly connected to the sliding seat 2, and its lower end is fixed to the base 4, thus forming an integral structure with the sliding seat 2. The third rod 5 is the third-stage rod, which is slidably connected to the base 4 and can telescopically move relative to the base 4.

[0033] Combination Figures 2 to 5The first locking structure 6 enables the locking of the first-stage rod, and mainly includes a first clamping block 61, a pull rod 62, and a latch 63. The first clamping block 61 can slide back and forth relative to the sliding seat 2 and cooperates with the sliding seat 2 to clamp the first rod 1. When the first clamping block 61 clamps the outer wall of the first rod 1, the sliding seat 2 and the first rod 1 are locked. The pull rod 62 is connected to the first clamping block 61 and extends forward through the pre-set through hole 21 on the sliding seat 2. The latch 63 is connected to the front end of the pull rod 62 by rotation. By pressing the latch 63, the operator can directly drive the pull rod 62 to move back and forth, thereby controlling the clamping and releasing actions of the first clamping block 61, and realizing the locking and unlocking of the first rod 1.

[0034] To precisely adjust the clamping force of the first clamping block 61, this invention also includes an adjustment mechanism. Specifically, the rear end of the pull rod 62 is machined with a threaded portion 621, and a second adjusting nut 64 is connected to the threaded portion 621 via a thread. The second adjusting nut 64 rests against the rear side of the through hole 21. By rotating the second adjusting nut 64, the stroke of the pull rod 62 can be changed, thereby fine-tuning the clamping force of the first clamping block 61 on the first rod 1 to adapt to different usage requirements.

[0035] To facilitate manual adjustment by the user, the second adjusting nut 64 preferably adopts a flower-shaped nut design, with multiple notches 641 evenly distributed around its perimeter, which increases the friction between the finger and the nut, making adjustment easier.

[0036] Furthermore, to prevent the second adjusting nut 64 from accidentally loosening during use, the sliding seat 2 is provided with several threaded holes 612 located on one side of the second adjusting nut 64. The anti-loosening screw 65 is screwed into the threaded hole 612 and engages with the recess 641 around the second adjusting nut 64. Simultaneously, the nut of the anti-loosening screw 65 firmly abuts against the rear side of the second adjusting nut 64, forming a double safety mechanism that effectively prevents the second adjusting nut 64 from loosening and improves the reliability of the mechanism.

[0037] like Figure 2 , Figures 5-7 As shown, the linkage structure 8 is the core of the one-button unlocking function, which links the operation of the first locking structure 6 to the second locking structure 7. The linkage structure 8 mainly includes a linkage rod 81, an upper conversion head 82, and a lower conversion head 83. The linkage rod 81 is designed to be able to move up and down relative to the sliding seat 2 and the base 4. The upper conversion head 82 is located at the upper end of the linkage rod 81, and the first clamping block 61 is provided with a tongue 611 for driving the linkage rod 81 to move up and down. The tongue 611 and the upper conversion head 82 are connected by a first transmission structure, which can convert the forward and backward movement of the first clamping block 61 into the upward and downward movement of the linkage rod 81.

[0038] Specifically, the first transmission structure includes a first driving ramp 6111 disposed on the tongue 611 and a groove 821 disposed on the upper conversion head 82. The groove 821 is used to accommodate the tongue 611, and a ramp-like structure or roller 822 is disposed on the upper part of the groove 821, which can cooperate with the first driving ramp 6111. When the first clamping block 61 moves back and forth, the tongue 611 moves accordingly, and the first driving ramp 6111 interacts with the ramp-like structure or roller 822, thereby driving the linkage rod 81 to move up and down. It is worth mentioning that when the first clamping block 61 moves backward, the linkage rod 81 can automatically fall down by its own gravity. Of course, in order to improve the reset speed, a reset spring can also be provided to assist the linkage rod 81 in falling down.

[0039] like Figure 2 , Figure 6 , Figure 7 As shown, the second locking structure 7 is used to lock or unlock the relative sliding between the third rod 5 and the base 4, and mainly includes a second clamping block 71. The second clamping block 71 is movably connected to the base 4 and cooperates with the base 4 to achieve locking by clamping the third rod 5. The lower end of the linkage rod 81 is provided with a lower conversion head 83, and a second transmission structure is provided between the lower conversion head 83 and the second clamping block 71 to convert the lifting movement of the linkage rod 81 into the clamping or releasing action of the second clamping block 71.

[0040] More specifically, the second transmission structure includes a second driving ramp 831 disposed on the lower conversion head 83. The upper part of the second clamping block 71 and the base 4 are rotatably connected by a pin 72, allowing the lower part of the second clamping block 71 to swing inwards and outwards. A contact portion 711 is provided on the outer side of the lower part of the second clamping block 71, which abuts against the second driving ramp 831. Simultaneously, a clamping portion 712 is provided on the inner side of the lower part of the second clamping block 71, which presses against the outer wall of the third rod 5. When the linkage rod 81 drives the lower conversion head 83 to rise, the second driving ramp 831 presses against the contact portion 711 towards the third rod 5, causing the lower part of the second clamping block 71 to swing inwards, thereby causing the clamping portion 712 to press against and lock the third rod 5. Conversely, when the linkage rod 81 drives the lower conversion head 83 to descend, the lower conversion head 83 releases its pressure on the contact portion 711, and the second clamping block 71 releases the third rod 5.

[0041] The upper end of the second clamping block 71 is hinged to the base 4, allowing it to swing freely around the pin 72. The lower conversion head 83 drives the lower end of the second clamping block 71 to swing, thus the second clamping block 71 is essentially a lever. The second transmission structure cleverly combines the inclined plane structure with the lever structure, making operation more effortless and the movement smoother.

[0042] Furthermore, the lower converter 83 is slidably connected to the base 4 in the vertical direction, and is sleeved on the lower part of the linkage rod 81, allowing it to move up and down along the linkage rod 81. An elastic reset element 84 (e.g., a spring) is also provided between the lower converter 83 and the linkage rod 81 to elastically press the lower converter 83 downwards. A first adjusting nut 85 is threadedly connected to the lower end of the linkage rod 81. The first adjusting nut 85 supports the lower converter 83 from below. By adjusting the height of the first adjusting nut 85, the position of the lower converter 83 can be finely adjusted, thereby achieving precise control of the second locking structure 7.

[0043] To reduce wear and increase service life, the contact portion 711 is preferably designed as a raised shape with rounded corners. To better accommodate the circular outer wall of the third member, the clamping portion 712 is designed as an arc shape.

[0044] In order to better abut against the outer side wall of the first rod 1, the first clamping block 61 is provided with a clamping surface 613, which is preferably an arc-shaped surface to adapt to the circular outer side wall of the first rod 1.

[0045] In some specific embodiments, the first rod 1 can be configured as two parallel and spaced apart, the sliding seat 2 is laterally disposed between the two first rods 1, and the two ends of the first clamping block 61 are respectively provided with clamping surfaces 613 that can abut against the outer side walls of different first rods 1, thereby realizing the synchronous locking of multiple first rods 1.

[0046] Working principle

[0047] The working principle of this utility model is as follows:

[0048] When locking the telescopic tube is required, the operator presses the lever 63. The lever 63 drives the pull rod 62 forward, pulling the first clamping block 61 to clamp the first rod 1, thereby locking the first locking structure 6. At the same time, the movement of the first clamping block 61 drives the linkage rod 81 upward through the first transmission structure between the tongue 611 and the upper conversion head 82. The rise of the linkage rod 81 then drives the second clamping block 71 to clamp the third rod 5 through the second transmission structure between the lower conversion head 83 and the second clamping block 71, thereby locking the second locking structure 7.

[0049] When the telescopic tube needs to be unlocked, the operator pulls the lever 63 in the opposite direction. The lever 63 drives the pull rod 62 to move backward, releasing the clamping of the first clamping block 61 on the first rod 1, thereby unlocking the first locking structure 6. At the same time, the movement of the first clamping block 61 is driven by the first transmission structure between the tongue 611 and the upper conversion head 82, and by the weight of the linkage rod 81, it drives the linkage rod 81 to descend. The descent of the linkage rod 81, in turn, drives the second clamping block 71 to release the third rod 5 through the second transmission structure between the lower conversion head 83 and the second clamping block 71, thereby unlocking the second locking structure 7.

[0050] Through the above structure and working principle, this utility model realizes the one-click locking and unlocking function of multi-stage telescopic tubes, which is simple and quick to operate and greatly improves the user experience.

[0051] The above is a detailed description of the specific embodiments of this utility model. Those skilled in the art can make various modifications and improvements based on the above description without departing from the principles and scope of this utility model.

Claims

1. A multi-stage telescopic tube locking mechanism with one-button unlocking function, characterized in that: It includes a first rod (1), a sliding seat (2) slidably connected to the first rod (1), a second rod (3) provided on the sliding seat (2), a base (4) provided on the second rod (3), a third rod (5) slidably connected to the base (4), a first locking structure (6) provided between the sliding seat (2) and the first rod (1), a second locking structure (7) provided between the third rod (5) and the base (4), and a linkage structure (8) provided between the second locking structure (7) and the first locking structure (6); The first locking structure (6) includes a first clamping block (61) that can move back and forth relative to the sliding seat (2) and cooperate with the sliding seat (2) to clamp the first rod (1). A pull rod (62) extending forward is connected to the first clamping block (61). The sliding seat (2) is provided with a through hole (21) for the pull rod (62) to pass through. The front end of the pull rod (62) is rotatably connected to a lever (63) for driving the pull rod (62) to move back and forth. Operating the lever (63) can realize one-click locking or unlocking of the first locking structure (6) and the second locking structure (7). The linkage structure (8) includes a linkage rod (81) that can be raised and lowered relative to the sliding seat (2) and the base (4). The upper end of the linkage rod (81) is provided with an upper conversion head (82). The first clamping block (61) is provided with a tongue (611) for driving the linkage rod (81) to rise and fall. A first transmission structure for converting the forward and backward movement of the first clamping block (61) into the lifting and lowering of the linkage rod (81) is provided between the tongue (611) and the upper conversion head (82). The second locking structure (7) includes a second clamping block (71) movably connected to the base (4) and cooperating with the base (4) to clamp the third rod (5). The lower end of the linkage rod (81) is provided with a lower conversion head (83). A second transmission structure is provided between the lower conversion head (83) and the second clamping block (71) for converting the lifting of the linkage rod (81) into the clamping or loosening of the second clamping block (71).

2. The multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 1, characterized in that: The first transmission structure includes a first driving ramp (6111) on the tongue (611), and the upper conversion head (82) is provided with a groove (821) for the tongue (611) to be inserted. The upper part of the groove (821) is provided with a ramp-shaped structure or roller (822) that can cooperate with the first driving ramp (6111).

3. The multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 1, characterized in that: The second transmission structure includes a second driving ramp (831) on the lower conversion head (83), and a pin (72) rotatably connecting the upper part of the second clamping block (71) and the base (4) so ​​that the lower part of the second clamping block (71) can swing in and out. The outer side of the lower part of the second clamping block (71) is provided with a contact part (711) that can abut against the second driving ramp (831), and the inner side of the lower part of the second clamping block (71) is provided with a third rod that can press against it. (5) Clamping part (712) on the outer side wall; when the lower conversion head (83) rises with the linkage rod (81), the second driving inclined surface (831) presses against the contact part (711) in the direction of the third rod (5), causing the lower part of the second clamping block (71) to swing inward, thereby causing the clamping part (712) to press against and lock the third rod (5); when the lower conversion head (83) falls with the linkage rod (81), the lower conversion head (83) releases the third rod (5).

4. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 3, characterized in that: The lower conversion head (83) is slidably connected to the base (4) in the vertical direction, and the lower conversion head (83) is sleeved on the lower part of the linkage rod (81) and can move up and down along it. An elastic reset member (84) is provided between the lower conversion head (83) and the linkage rod (81) to elastically press the lower conversion head (83) downward. The lower end of the linkage rod (81) is also threaded with a first adjusting nut (85), which is supported below the lower conversion head (83) and can adjust the height of the lower conversion head (83).

5. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 3, characterized in that: The contact portion (711) is a raised shape with rounded corners, and the clamping portion (712) is arc-shaped.

6. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 1, characterized in that: The rear end of the pull rod (62) is provided with a threaded part (621), and a second adjusting nut (64) for adjusting the stroke of the pull rod (62) by means of a thread on the threaded part (621) is connected by a thread.

7. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 6, characterized in that: The second adjusting nut (64) is a flower-shaped nut with multiple recesses (641) evenly arranged around its periphery; the first clamping block (61) is also provided with a number of threaded holes (612) located on one side of the second adjusting nut (64), and anti-loosening screws (65) are connected in the threaded holes (612). The anti-loosening screws (65) are stuck in the recesses (641) around the second adjusting nut (64), and the nuts of the anti-loosening screws (65) are blocked on the back side of the second adjusting nut (64).

8. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 1, characterized in that: The first clamping block (61) is provided with a clamping surface (613) that can abut against the outer wall of the first rod (1).

9. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 8, characterized in that: The clamping surface (613) is an arc-shaped surface.

10. A multi-stage telescopic tube locking mechanism with one-button unlocking function according to claim 8, characterized in that: The first rod (1) has two parallel and spaced-apart parts, and the sliding seat (2) is arranged laterally between the two first rods (1). The two ends of the first clamping block (61) are respectively provided with clamping surfaces (613) that can abut against the outer sidewalls of different first rods (1).

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