A foot tube locking mechanism and a foot tube

Abstract

The utility model discloses a foot pipe locking mechanism, include: connecting rod unit, along the axial length direction of foot pipe extension, first lock single unit, be located at the first end of connecting rod unit, second lock single unit, be located at the second end of connecting rod unit, driving part is connected with connecting rod unit, can drive connecting rod unit to be active under the external force of driving part, to make the part of first lock single unit and second lock single unit move to the direction of approaching or away from foot pipe wall. The utility model discloses a foot pipe. The utility model utilizes the one-step operation of driving part to can realize the locking or unlocking between inner tube one, inner tube two, outer tube, and the operation is simple and convenient, and one foot pipe locking mechanism can realize the locking or unlocking between inner tube one, inner tube two, outer tube, and the quantity of locking structure is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of photographic auxiliary equipment, and in particular relates to a leg locking mechanism and a leg tube. Background Technology

[0002] Existing leg locking structures are all set between two adjacent legs. When the three legs are connected in telescopic manner, at least two locking structures are required to lock all the legs after they are extended. For example, the tripod for multi-angle shooting disclosed in Chinese patent CN223019901U has multiple tube section locking buckles to lock all telescopic legs, which is relatively complex. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a foot tube locking mechanism and foot tube, which can lock three foot tubes through one operation step. It is easy to operate and the locking is stable and effective.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a foot tube locking mechanism, comprising: The linkage unit extends along the axial length of the leg tube; The first locking unit is located at the first end of the linkage unit; The second locking unit is located at the second end of the linkage unit; A drive member, connected to the linkage unit, applies an external force to the drive member to drive the linkage unit to move such that portions of the first locking unit and the second locking unit move toward or away from the foot tube wall.

[0005] Furthermore, the first end of the connecting rod unit is provided with a first threaded section; the first locking unit includes a first mating member that is in transmission cooperation with the first threaded section, a first movable member that abuts against the first mating member, and a first limiting cavity. The first limiting cavity is used to limit the rotation of the first mating member and limit the axial movement stroke of the first mating member. Applying an external force to rotate the driving member can drive the first mating member to translate axially, so that the first movable member translates in a direction closer to or away from the foot tube wall.

[0006] Furthermore, the second end of the connecting rod unit is provided with a second threaded section; the second locking unit includes a second mating member that drives the second threaded section, a second movable member that abuts against the second mating member, and a second limiting cavity. The second limiting cavity is used to limit the rotation of the second mating member and limit the axial movement stroke of the second mating member. Applying an external force to rotate the driving member can drive the second mating member to translate axially, so that the second movable member translates towards or away from the foot tube wall.

[0007] Furthermore, the first mating part and the first movable part are mated together by inclined surfaces; the second mating part and the second movable part are mated together by inclined surfaces.

[0008] Furthermore, the driving component is a lever, which is connected to the linkage unit and is used to drive the linkage unit to rotate around its own central axis.

[0009] Furthermore, the connecting rod unit includes a connecting rod body, and a first end and a second end detachably connected to both ends of the connecting rod body, wherein the first threaded section is located on the outer wall of the first end and the second threaded section is located on the outer wall of the second end.

[0010] This utility model also discloses a foot tube, including: an outer tube, an inner tube one and an inner tube two that are telescopically connected to the outer tube, and the aforementioned foot tube locking mechanism. When an external force is applied to the driving member, the linkage unit can be driven to move, so that parts of the first locking unit and the second locking unit move toward or away from the foot tube wall, so as to lock or unlock the outer tube, the inner tube one and the inner tube two.

[0011] Furthermore, the outer tube has a first joint and a second joint, the first locking unit is disposed on the first joint, the second locking unit is disposed on the second joint, and the first joint has a first positioning part for restricting the translation of the first movable member and a first window part for the first movable member to extend out, and the second joint has a second positioning part for restricting the translation of the second movable member and a second window part for the second movable member to extend out.

[0012] Furthermore, a portion of the first locking unit moves toward or away from the inner tube 1 to lock or unlock the inner tube 1, and a portion of the second locking unit moves toward or away from the inner tube 2 to lock or unlock the inner tube 2.

[0013] Furthermore, the outer tube, inner tube one, and inner tube two are irregularly shaped tubes with a lateral width greater than a longitudinal width, and the foot tube locking mechanism is located on one side of the lateral width; the first movable member has a first abutting surface that can fit against the outer wall of inner tube one, and the second movable member has a second abutting surface that can fit against the outer wall of inner tube two.

[0014] The beneficial effects of this utility model are: 1) Locking or unlocking between inner tube one, inner tube two, and outer tube can be achieved by one-step operation of the driving component, which is simple to operate; 2) Locking or unlocking between inner tube one, inner tube two, and outer tube can be achieved by one foot tube locking mechanism, which reduces the number of locking structures; 3) The rotation of the driving component can trigger the first locking unit and the second locking unit at the same time, which is ingenious in structural design. Attached Figure Description

[0015] Figure 1The three-dimensional form of the leg tube in this utility model Figure 1 .

[0016] Figure 2 This is an exploded structural diagram of the foot tube in this utility model.

[0017] Figure 3 for Figure 2 Enlarged view of the structure at point A in the image.

[0018] Figure 4 for Figure 2 Enlarged view of the structure at point B in the image.

[0019] Figure 5 This is a longitudinal sectional view of the leg tube in this utility model. Figure 1 It is currently in an unlocked state.

[0020] Figure 6 A cross-sectional view of the locking mechanism of the middle leg tube in this utility model. Figure 1 .

[0021] Figure 7 This is a cross-sectional view of the leg tube in this utility model. Figure 1 It is currently in an unlocked state.

[0022] Figure 8 This is a three-dimensional structural diagram of the locking mechanism for the middle leg tube in this utility model.

[0023] Figure 9 for Figure 8 Enlarged view of the structure at point C.

[0024] Figure 10 for Figure 8 Enlarged view of the structure at point D in the image.

[0025] Figure 11 A cross-sectional view of the locking mechanism of the middle leg tube in this utility model. Figure 2 .

[0026] Figure 12 This is a longitudinal sectional view of the leg tube in this utility model. Figure 2 It is currently in a locked state.

[0027] Figure 13 This is a cross-sectional view of the leg tube in this utility model. Figure 2 It is currently in a locked state.

[0028] Figure 14 This is a schematic diagram of the application of the leg tubes in this utility model to a tripod.

[0029] Wherein, 1-first locking unit, 11-first mating part, 111-first inclined surface, 12-first movable part, 121-first abutting surface, 122-first protrusion, 13-first limiting cavity, 2-second locking unit, 21-second mating part, 211-second inclined surface, 22-second movable part, 221-second abutting surface, 222-second protrusion, 23-second limiting cavity, 3-linkage unit, 31-first threaded segment, 32-second threaded segment, 33-linkage body, 34-first end, 35-second end, 4-driving part, 5-outer tube, 51-first joint, 511-first positioning part, 512-first window part, 52-second joint, 521-second positioning part, 522-second window part, 61-inner tube one, 62-inner tube two. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0031] like Figures 1-5 As shown, a foot tube locking mechanism includes a linkage unit 3 extending along the axial length direction of the foot tube, a first locking unit 1 and a second locking unit 2 respectively disposed at both ends of the linkage unit 3, and a driving member 4 connected to the linkage unit 3.

[0032] When an external force is applied to the driving member 4, the linkage unit 3 can be driven to move, thereby causing parts of the first locking unit 1 and the second locking unit 2 to move toward or away from the foot tube wall. In other words, when the linkage unit 3 moves, the first locking unit 1 and the second locking unit 2 are simultaneously triggered to move.

[0033] When the aforementioned foot tube locking mechanism is installed on the foot tube, a foot tube includes an outer tube 5, an inner tube 61 and an inner tube 62 that are telescopically connected to the outer tube 5, and the aforementioned foot tube locking mechanism. Part of the foot tube locking mechanism is located inside the outer tube 5. Specifically, most of the driving member 4 is located outside the outer tube 5, the linkage unit 3 is located inside the outer tube 5, the lower part of the driving member 4 and the first locking unit 1 are located between the outer tube 5 and the inner tube 61, and the second locking unit 2 is located between the outer tube 5 and the inner tube 62.

[0034] When an external force is applied to the driving component 4, the linkage unit 3 can be driven to move, thereby causing parts of the first locking unit 1 and the second locking unit 2 to move closer to or further away from the wall of the foot tube, thereby achieving locking or unlocking of the outer tube 5, inner tube 1 61 and inner tube 2 62.

[0035] Specifically, in this embodiment, the linkage unit 3 rotates with the driving member 4, causing the first locking unit 1 to move towards or away from the wall of the inner tube 61, thereby locking or unlocking the inner tube 61; a portion of the second locking unit 2 moves towards or away from the wall of the inner tube 62, thereby locking or unlocking the inner tube 62. It should be noted that the movement of the first locking unit 1 towards or away from the wall of the inner tube 61 can also be interpreted as the first locking unit 1 moving towards or away from the inner wall of the outer tube 5. Therefore, the terms "nearer" and "away" do not necessarily correspond precisely to locking or unlocking; they are merely used to illustrate that the actions of approaching or moving away can achieve the functions of locking and unlocking.

[0036] like Figures 2-6 , Figures 8-12 As shown, the linkage unit 3 includes a linkage body 33, and a first end 34 and a second end 35 detachably connected to both ends of the linkage body 33. A first threaded section 31 is provided on the outer wall of the first end 34, and a second threaded section 32 is provided on the outer wall of the second end 35. Of course, in other embodiments, the linkage body 33, the first end 34, and the second end 35 can also be configured as an integral structure, and there is no specific limitation.

[0037] The first locking unit 1 includes a first mating member 11 that engages with the first threaded segment 31, a first movable member 12 that abuts against the first mating member 11, and a first limiting cavity 13. The first limiting cavity 13 is used to restrict the rotation of the first mating member 11 and to limit the axial movement of the first mating member 11. In other words, the first mating member 11 is disposed in the first limiting cavity 13 so that it cannot rotate circumferentially and can only move axially up and down, and the stroke of the axial up and down movement is also limited. The inner wall of the first mating member 11 forms an internal thread, which engages with the first threaded segment 31 through a threaded transmission.

[0038] The second locking unit 2 includes a second mating member 21 that engages with the second threaded segment 32, a second movable member 22 that abuts against the second mating member 21, and a second limiting cavity 23. The second limiting cavity 23 restricts the rotation of the second mating member 21 and limits its axial movement. In other words, the second mating member 21 is disposed within the second limiting cavity 23, preventing circumferential rotation and allowing only axial vertical movement, with the vertical movement stroke also limited. The inner wall of the second mating member 21 forms an internal thread, which engages with the second threaded segment 32.

[0039] An external force is applied to the driving component 4. In this embodiment, the driving component 4 is a lever structure, which is connected to the connecting rod body 33 of the connecting rod unit 3. This allows the connecting rod unit 3 to rotate around its own central axis. In other words, applying an external force to turn the driving component 4 can also cause the connecting rod body 33 to rotate around its own axis. Under the action of the first threaded section 31, since the first mating component 11 cannot rotate with it, the first mating component 11 can only translate axially. This causes the first movable component 12 to translate towards or away from the wall of the foot tube, thereby achieving the locking or unlocking of the outer tube 5 and the inner tube 61.

[0040] At the same time, under the action of the second threaded section 32, since the second mating part 21 cannot rotate with it, the second mating part 21 can only translate axially, thereby causing the second movable part 22 to translate towards or away from the wall of the foot tube, thereby achieving locking or unlocking of the outer tube 5 and the inner tube 62.

[0041] It should be noted that the first movable member 12 moves toward or away from the wall of the inner tube 61. In other words, the first movable member 12 can also move toward or away from the inner wall of the outer tube 5. Therefore, the above-mentioned approach and away do not necessarily correspond precisely to locking or unlocking. They are only used to illustrate that the action of approaching or moving away can achieve the function of locking and unlocking.

[0042] The first mating part 11 and the first movable part 12 are mated together by inclined surfaces, and the second mating part 21 and the second movable part 22 are also mated together by inclined surfaces. Their mating structures are similar, such as... Figure 11 As shown, the first mating member 11 has a first inclined surface 111, which extends inclinedly from top to bottom and from left to right. The second mating member 21 has a second inclined surface 211, which extends inclinedly from top to bottom and from right to left. Correspondingly, the side of the first movable member 12 facing the first mating member 11 has an inclined surface with the same inclined direction and angle as the first inclined surface 111, and the side of the second movable member 22 facing the second mating member 21 has an inclined surface with the same inclined direction and angle as the second inclined surface 211.

[0043] The outer tube 5 has a first joint 51 and a second joint 52 at its end. A first locking unit 1 is disposed within the first joint 51, and a second locking unit 2 is disposed within the second joint 52. Figure 3As shown, the first joint 51 has a first positioning portion 511 for restricting the translation of the first movable member 12, and a first window portion 512 for the first movable member 12 to extend out. The first joint 51 forms the aforementioned first limiting cavity 13. The first positioning portion 511 is located on the inner sidewall of the first limiting cavity 13, and the first window portion 512 is located at the end of the first limiting cavity 13. In this embodiment, the first positioning portion 511 has a groove structure. Correspondingly, a first protrusion 122 is provided on the side of the first movable member 12, into which the first positioning portion 511 can be inserted. By utilizing the translation of the first protrusion 122 within the groove, the translation of the first movable member 12 relative to the first joint 51 is achieved.

[0044] Similarly, such as Figure 4 As shown, the second joint 52 has a second positioning portion 521 for restricting the translation of the second movable member 22, and a second window portion 522 for the second movable member 22 to extend out. The second joint 52 forms the aforementioned second limiting cavity 23. The second positioning portion 521 is located on the inner wall of the second limiting cavity 23, and the second window portion 522 is located at the end of the second limiting cavity 23. In this embodiment, the second positioning portion 521 is a groove structure. Correspondingly, a second protrusion 222 is provided on the side of the second movable member 22 into which the second positioning portion 521 can be inserted. By utilizing the translation of the second protrusion 222 within the groove, the translation of the second movable member 22 relative to the second joint 52 is achieved.

[0045] In this embodiment, the outer tube 5, inner tube 1 61, and inner tube 2 62 are irregularly shaped tubes, specifically, their lateral width is greater than their longitudinal width, and the foot tube locking mechanism is located on one side of the lateral width. In order to increase the contact area between the first locking unit 1 and the inner tube 1 61, thereby achieving effective locking of the inner tube 1 61, the first movable member 12 has a first abutting surface 121 that can fit against the outer wall of the inner tube 1 61; in order to increase the contact area between the second locking unit 2 and the inner tube 2 62, thereby achieving effective locking of the inner tube 2 62, the second movable member 22 has a second abutting surface 221 that can fit against the outer wall of the inner tube 2 62.

[0046] The usage process of this utility model is as follows: when in the... Figure 5 In the unlocked state shown, inner tube 1 61 and inner tube 2 62 are unlocked and can freely extend from the outer tube 5, achieving the extension of the foot tube; applying external force to rotate the drive component 4 causes the connecting rod unit 3 to rotate, causing its first threaded section 31 to drive the first mating component 11 to move axially upward, thereby pushing the first movable component 12 to move to the right, that is, its first abutting surface 121 abuts against the outer wall of inner tube 1 61, achieving the locking of inner tube 1 61, as shown. Figure 13As shown; simultaneously, the second threaded section 32 drives the second mating part 21 to move axially downward, which in turn pushes the second movable part 22 to move to the right, that is, its second abutting surface 221 abuts against the outer wall of the inner tube 62, thereby locking the inner tube 62, as shown. Figure 12 As shown.

[0047] When the drive member 4 is rotated outward, the connecting rod unit 3 rotates in the opposite direction. The first threaded section 31 drives the first mating member 11 to move axially downward, and the first movable member 12 has a space to move away from the inner tube 61, thereby unlocking the inner tube 61. At the same time, the second threaded section 32 drives the second mating member 21 to move axially upward, and the second movable member 22 has a space to move away from the inner tube 62, thereby unlocking the inner tube 62.

[0048] The locking of the inner tube 1 61 and inner tube 2 62 can be in the state where the outer tube 5, inner tube 1 61 and inner tube 2 62 are fully extended, partially extended or fully retracted, and there are no specific restrictions.

[0049] like Figure 14 As shown, the aforementioned legs can be used in photography tripods, photography softbox tripods, selfie tripods, or photography light tripods, with no specific limitations.

[0050] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A foot tube locking mechanism, characterized in that, include: The connecting rod unit (3) extends along the axial length of the foot tube; The first locking unit (1) is located at the first end of the link unit (3); The second locking unit (2) is located at the second end of the connecting rod unit (3); The drive member (4) is connected to the linkage unit (3). When an external force is applied to the drive member (4), the linkage unit (3) can be moved so that parts of the first locking unit (1) and the second locking unit (2) move toward or away from the foot tube wall.

2. The foot tube locking mechanism according to claim 1, characterized in that: The first end of the connecting rod unit (3) is provided with a first threaded section (31); the first locking unit (1) includes a first mating part (11) that is in transmission cooperation with the first threaded section (31), a first movable part (12) that abuts against the first mating part (11), and a first limiting cavity (13). The first limiting cavity (13) is used to limit the rotation of the first mating part (11) and limit the axial movement stroke of the first mating part (11). Applying an external force to rotate the driving member (4) can drive the first mating part (11) to translate axially, so that the first movable part (12) translates towards or away from the foot tube wall.

3. The foot tube locking mechanism according to claim 2, characterized in that: The second end of the connecting rod unit (3) is provided with a second threaded section (32); the second locking unit (2) includes a second mating part (21) that is in transmission cooperation with the second threaded section (32), a second movable part (22) that abuts against the second mating part (21), and a second limiting cavity (23). The second limiting cavity (23) is used to limit the rotation of the second mating part (21) and limit the axial movement stroke of the second mating part (21). Applying an external force to rotate the driving member (4) can drive the second mating part (21) to translate axially, so that the second movable part (22) translates towards or away from the foot tube wall.

4. The foot tube locking mechanism according to claim 3, characterized in that: The first mating part (11) and the first movable part (12) are mated together by inclined surfaces; the second mating part (21) and the second movable part (22) are mated together by inclined surfaces.

5. The foot tube locking mechanism according to claim 1, characterized in that: The driving component (4) is a lever, which is connected to the connecting rod unit (3) and is used to drive the connecting rod unit (3) to rotate around its own central axis.

6. The foot tube locking mechanism according to claim 3, characterized in that: The connecting rod unit (3) includes a connecting rod body (33), and a first end (34) and a second end (35) detachably connected to both ends of the connecting rod body (33). The first threaded section (31) is located on the outer wall of the first end (34), and the second threaded section (32) is located on the outer wall of the second end (35).

7. A type of leg tube, characterized in that, include: The outer tube (5), the inner tube one (61) and the inner tube two (62) which are telescopically connected to the outer tube (5), and the foot tube locking mechanism as described in any one of claims 1-6, when an external force is applied to the driving member (4), can drive the linkage unit (3) to move so that parts of the first locking unit (1) and the second locking unit (2) move toward or away from the foot tube wall, so as to lock or unlock the outer tube (5), the inner tube one (61) and the inner tube two (62).

8. The leg tube according to claim 7, characterized in that: The outer tube (5) has a first joint (51) and a second joint (52), the first locking unit (1) is disposed on the first joint (51), the second locking unit (2) is disposed on the second joint (52), and the first joint (51) has a first positioning part (511) for restricting the translation of the first movable member (12) and a first window part (512) for the first movable member (12) to extend out, and the second joint (52) has a second positioning part (521) for restricting the translation of the second movable member (22) and a second window part (522) for the second movable member (22) to extend out.

9. The leg tube according to claim 7, characterized in that: A portion of the first locking unit (1) moves toward or away from the inner tube (61) to lock or unlock the inner tube (61), and a portion of the second locking unit (2) moves toward or away from the inner tube (62) to lock or unlock the inner tube (62).

10. The leg tube according to claim 7, characterized in that: The outer tube (5), inner tube one (61), and inner tube two (62) are irregular tubes with a lateral width greater than the longitudinal width. The foot tube locking mechanism is located on one side of the lateral width. The first movable part (12) has a first contact surface (121) that can fit with the outer wall of inner tube one (61), and the second movable part (22) has a second contact surface (221) that can fit with the outer wall of inner tube two (62).

Images