A buckle locking structure, a foot tube and a support

Abstract

This utility model discloses a lever-locking structure, a foot tube, and a bracket. The lever-locking structure includes an outer tube, an inner tube, a locking ring, a retaining block, a pull rod, and a lever. The outer tube is sleeved on the inner tube. The locking ring is sleeved on the outer tube and has a locking groove that runs through it. A first abutment groove is formed on the locking ring, and a second abutment groove is formed on the outer tube that communicates with the first abutment groove. The retaining block is movably disposed within the first and second abutment grooves. One end of the pull rod is connected to one end of the locking ring, and the other end passes through the retaining block. The lever is connected to the other end of the pull rod and abuts against the retaining block. The lever has a locking position and an unlocking position. The rotation of the lever drives the retaining block to abut against the inner tube, thereby realizing the axial movement or restriction between the outer tube and the inner tube. Locking is achieved without relying on the deformation of the outer tube, which not only improves the stability of the outer tube structure but also reduces the wear of various components, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment, and in particular to a lever locking structure, leg tubes and bracket. Background Technology

[0002] A tripod is a tool used in photography to support and adjust shooting equipment. It typically has multiple legs, which are composed of multi-stage telescopic tubes, allowing for easy adjustment of the equipment's height. Among the locking structures for the relative positions of these telescopic tubes, the most widely used is the lever-locking structure. However, existing lever-locking structures require a slit in the outer tube. The lever, during rotation, presses against the outer tube, and the deformation of the telescopic tubes then presses against the inner tube, thus restricting the relative movement between them. This lever-locking structure causes irreversible damage to the outer tube's structure, affecting its structural strength. Therefore, a new lever-locking structure, legs, and tripod are urgently needed to solve these problems. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a lever locking structure, a foot tube, and a bracket.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a lever locking structure, including an outer tube, an inner tube, a locking ring, a support block, a pull rod, and a lever;

[0005] The outer tube is fitted onto the inner tube;

[0006] A locking ring is fitted onto the outer tube and has a locking groove that runs through the front and back. A first abutting groove is formed on the locking ring, and a second abutting groove that communicates with the first abutting groove is formed on the outer tube.

[0007] The abutment block is movably positioned within the first abutment groove and the second abutment groove;

[0008] One end of the lever is connected to one end of the locking ring, and the other end passes through the abutment block;

[0009] The lever is connected to the other end of the lever and abuts against the support block. The lever has a locked position and an unlocked position.

[0010] The retaining block can abut against the outer wall of the inner tube when the latch is in the locked position to restrict axial movement between the outer tube and the inner tube, or the retaining block can separate from the inner tube when the latch is in the unlocked position to allow the inner tube to move axially relative to the outer tube.

[0011] As one of the preferred embodiments of this utility model, a first connecting seat is provided on one side of the locking groove and a second connecting seat is provided on the other side. The first abutting groove is formed on the second connecting seat, and one end of the pull rod is connected to the first connecting seat and the other end passes through the first abutting groove.

[0012] As one of the preferred embodiments of this utility model, the supporting block has an abutting arc surface on the side near the inner tube and a first guide surface on the side away from the inner tube, and a second guide surface that abuts against the first guide surface is provided on the inner wall of the second connecting seat.

[0013] In one of the preferred embodiments of this utility model, the pull rod is configured as a screw rod, which is threadedly connected to the buckle.

[0014] As one of the preferred embodiments of this utility model, a buckle locking structure further includes a return spring, which is sleeved on the pull rod and has one end abutting against the first connecting seat and the other end abutting against the holding block.

[0015] As one of the preferred embodiments of this utility model, a limiting plate is provided on the abutment block, which can be engaged with the side wall of the second abutment groove when the buckle is in the unlocked position.

[0016] As one of the preferred embodiments of this utility model, the supporting block is provided with a through groove, and the outer diameter of the pull rod is smaller than the inner diameter of the through groove, so that the pull rod can move radially along the outer tube within the through groove.

[0017] As one of the preferred embodiments of this utility model, a gasket is provided between the supporting block and the buckle.

[0018] A foot tube, including the aforementioned lever locking structure.

[0019] A support, including the aforementioned leg tubes.

[0020] The beneficial effects of this utility model are as follows: A lever-locking structure, a foot tube, and a bracket are provided. The lever-locking structure includes an outer tube, an inner tube, a locking ring, a retaining block, a pull rod, and a lever. The outer tube is sleeved on the inner tube. The locking ring is sleeved on the outer tube and has a locking groove that runs through it. A first abutment groove is formed on the locking ring, and a second abutment groove is formed on the outer tube that communicates with the first abutment groove. The retaining block is movably disposed in the first and second abutment grooves. One end of the pull rod is connected to one end of the locking ring, and the other end passes through the retaining block. The lever is connected to the other end of the pull rod and to the retaining block. The retaining block abuts against the inner tube, and the latch has a locked position and an unlocked position. When the latch is in the locked position, the retaining block abuts against the outer wall of the inner tube to restrict the axial movement between the outer tube and the inner tube, or when the latch is in the unlocked position, the retaining block separates from the inner tube to allow the inner tube to move axially relative to the outer tube. The rotation of the latch drives the retaining block to abut against the inner tube, thereby realizing the axial movement or restriction between the outer tube and the inner tube. It does not rely on the deformation of the outer tube for locking, which not only improves the stability of the outer tube structure, but also reduces the wear of various components, and has very good practicality. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of a lever-locking structure;

[0023] Figure 2 An exploded view of a lever-locking structure;

[0024] Figure 3 This is a cross-sectional view of a lever-locking structure. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 3 This utility model provides a lever locking structure, including an outer tube 10, an inner tube 20, a locking ring 30, a support block 40, a pull rod 50, and a lever 60;

[0030] The outer tube 10 is fitted onto the inner tube 20;

[0031] The locking ring 30 is sleeved on the outer tube 10 and has a locking groove 31 that runs through the front and back. A first abutting groove 71 is formed on the locking ring 30, and a second abutting groove 72 that communicates with the first abutting groove 71 is formed on the outer tube 10.

[0032] The abutment block 40 is movably disposed within the first abutment groove 71 and the second abutment groove 72;

[0033] One end of the pull rod 50 is connected to one end of the locking ring 30, and the other end passes through the abutment block 40;

[0034] The latch 60 is connected to the other end of the pull rod 50 and abuts against the support block 40. The latch 60 has a locked position and an unlocked position.

[0035] The retaining block 40 can abut against the outer wall of the inner tube 20 when the latch 60 is in the locked position to restrict the axial movement between the outer tube 10 and the inner tube 20, or the retaining block 40 can separate from the inner tube 20 when the latch 60 is in the unlocked position to allow the inner tube 20 to move axially relative to the outer tube 10.

[0036] In this utility model, the example of switching the latch 60 from the unlocked position to the locked position is used for explanation. When in use, the latch 60 is in the unlocked position and is rotating outwards. When the latch 60 is rotated inwards around its axis of rotation, the pull rod 50 (using the eccentric protrusion on the latch 60) drives the two ends of the locking ring 30 opening to move closer together, thus reducing the diameter of the locking groove 31. Simultaneously, the latch 60 pushes the abutment block 40 towards the inner tube 20 within the first abutment groove 71 and the second abutment groove 72, causing the abutment block 40 to abut against the outer wall of the inner tube 20. When the latch 60 switches to the locked position... When the abutment block 40 and the outer wall of the inner tube 20 are in the maximum position, the lever 60 is operated to rotate inward and outward around its rotation axis. The pull rod 50 loses the pulling force from the lever 60 and retracts under the action of the deformation of the locking ring 30 itself. That is, the two ends of the opening of the locking ring 30 move away from each other and the groove diameter of the locking groove 31 increases. At the same time, the lever 60 also releases the pushing force on the abutment block 40, so that the abutment block 40 moves away from the inner tube 20 in the first abutment groove 71 and the second abutment groove 72. When the lever 60 is switched to the unlock position, the abutment block 40 and the outer wall of the inner tube 20 are in the minimum position.

[0037] Reference Figures 1-3 In some embodiments, a first connecting seat 32 is provided on one side of the locking groove 31 and a second connecting seat 33 is provided on the other side. A first abutting groove 71 is formed on the second connecting seat 33. One end of the pull rod 50 is connected to the first connecting seat 32 and the other end passes through the first abutting groove 71. It should be noted that the buckle 60 is rotatably connected to the second connecting seat 33 through a rotating shaft, and the other end of the pull rod 50 is connected to the rotating shaft.

[0038] Reference Figures 1-3 In some embodiments, the abutment block 40 has an abutment arc surface 41 on the side near the inner tube 20 and a first guide surface 42 on the side away from the inner tube 20. The inner sidewall of the second connecting seat 33 has a second guide surface 43 that abuts against the first guide surface 42. Preferably, the first guide surface 42 and the second guide surface 43 are inclined surfaces. Specifically, the curvature of the abutment arc surface 41 is adapted to the inner tube 20, and the cooperation between the first guide surface 42 and the second guide surface 43 can drive the abutment block 40 to move toward the inner tube 20 when the latch 60 enters the locking position, and drive the abutment block 40 to move away from the inner tube 20 when the latch 60 enters the unlocking position.

[0039] Reference Figures 1-3 In some embodiments, the pull rod 50 is configured as a screw, which is threaded onto the buckle 60; this configuration allows for adjustment of the initial distance between the first connecting seat 32 and the second connecting seat 33, and can be adjusted when the locking force is insufficient or excessive, thereby improving ease of use.

[0040] Reference Figures 1-3 In some embodiments, a latch locking structure further includes a return spring 80, which is sleeved on the pull rod 50 with one end abutting against the first connecting seat 32 and the other end abutting against the holding block 40. By setting the return spring 80, the holding block 40 can be driven away from the inner tube 20 when unlocking, and the first connecting seat 32 and the second connecting seat 33 can be moved away from each other, which is beneficial to improving the stability of unlocking.

[0041] Reference Figures 1-3 In some embodiments, the abutment block 40 is provided with a limiting plate 44, which can engage with the side wall of the second abutment groove 72 when the latch 60 is in the unlocked position, thereby limiting the movement of the abutment block 40 and preventing the abutment block 40 from completely disengaging from the second abutment groove 72.

[0042] Reference Figures 1-3 In some embodiments, the abutment block 40 is provided with a through groove 45, and the outer diameter of the pull rod 50 is smaller than the inner diameter of the through groove 45, so that the pull rod 50 can move radially along the outer tube 10 within the through groove 45.

[0043] Reference Figures 1-3 In some embodiments, a gasket 90 between the retaining block 40 and the latch 60, preferably made of plastic, can reduce the friction between the latch 60 and the retaining block 40 and reduce wear.

[0044] This utility model also provides a foot tube, including the aforementioned buckle locking structure.

[0045] This utility model also provides a bracket, including the aforementioned leg tubes.

[0046] The advantages of this utility model are: the rotation of the lever drives the holding block to hold the inner tube, thereby realizing the axial movement or restriction between the outer tube and the inner tube. It does not rely on the deformation of the outer tube for locking, which not only improves the stability of the outer tube structure, but also reduces the wear of various components, and has very good practicality.

[0047] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A snap lock structure, characterized by: It includes an outer tube (10), an inner tube (20), a locking ring (30), a retaining block (40), a pull rod (50), and a latch (60); The outer tube (10) is sleeved on the inner tube (20); The locking ring (30) is sleeved on the outer tube (10) and has a locking groove (31) that runs through the front and back. A first abutting groove (71) is formed on the locking ring (30), and a second abutting groove (72) that communicates with the first abutting groove (71) is formed on the outer tube (10). The abutment block (40) is movably disposed within the first abutment groove (71) and the second abutment groove (72); One end of the pull rod (50) is connected to one end of the locking ring (30), and the other end passes through the abutment block (40); The latch (60) is connected to the other end of the pull rod (50) and abuts against the abutment block (40). The latch (60) has a locking position and an unlocking position. The abutment block (40) can abut against the outer wall of the inner tube (20) when the latch (60) is in the locked position to restrict the axial movement between the outer tube (10) and the inner tube (20), or the abutment block (40) can separate from the inner tube (20) when the latch (60) is in the unlocked position to allow the inner tube (20) to move axially relative to the outer tube (10).

2. The clamping structure of claim 1, wherein: The locking groove (31) has a first connecting seat (32) on one side and a second connecting seat (33) on the other side. The first abutting groove (71) is formed on the second connecting seat (33). One end of the pull rod (50) is connected to the first connecting seat (32), and the other end passes through the first abutting groove (71).

3. The clamping structure of claim 2, wherein: The abutting block (40) has an abutting arc surface (41) on the side close to the inner tube (20) and a first guide surface (42) on the side away from the inner tube (20). The inner wall of the second connecting seat (33) has a second guide surface (43) that abuts against the first guide surface (42).

4. The clamping structure of claim 1, wherein: The pull rod (50) is configured as a screw, which is threaded onto the buckle (60).

5. The clamping structure of claim 2, wherein: It also includes a return spring (80), which is sleeved on the pull rod (50) with one end abutting against the first connecting seat (32) and the other end abutting against the abutting block (40).

6. The clamping structure of claim 1, wherein: The abutment block (40) is provided with a limiting plate (44), which can be engaged with the side wall of the second abutment groove (72) when the buckle (60) is in the unlocked position.

7. The latch locking structure according to claim 1, characterized in that: The abutment block (40) is provided with a through groove (45), and the outer diameter of the pull rod (50) is smaller than the inner diameter of the through groove (45) so that the pull rod (50) can move radially along the outer tube (10) within the through groove (45).

8. The clamping structure of claim 1, wherein: It also includes a gasket (90) provided between the abutment block (40) and the latch (60).

9. A foot tube characterized in that: Includes the lever locking structure as described in any one of claims 1-8.

10. A stent, characterized by: Includes the foot tube as described in claim 9.

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