Telescopic foot tube capable of being quickly unlocked and locked and supporting frame

Abstract

The utility model discloses a telescopic foot tube and a support frame capable of quickly unlocking and locking, the telescopic foot tube comprises a linkage rod and a plurality of foot tube components which are sequentially cascaded, the linkage rod is arranged on the plurality of foot tube components in a penetrating manner, and each foot tube component comprises an outer tube, an inner tube, a push-pull component and a locking component; the push-pull assembly can move in the first direction in the axial direction relative to the linkage rod when the linkage rod rotates in the forward direction, so that the inner pipe drives the locking assembly to limit relative movement between the inner pipe and the outer pipe of the next-stage foot pipe assembly. Or, the push-pull assembly can move in the second direction in the axial direction relative to the linkage rod when the linkage rod rotates reversely, so that the locking assembly is driven by the inner pipe to relieve the limitation on the relative movement between the inner pipe and the outer pipe of the next-stage foot pipe assembly; by means of the structure, the multiple foot tube assemblies can be linked through the linkage rods at the same time for locking and unlocking, the structure is made to be uniform, use convenience is improved, and structural complexity and production cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment, and in particular to a telescopic leg tube and support frame that can be quickly locked and unlocked. Background Technology

[0002] Mobile phones and cameras (or tablets, laptops, etc.) are commonly used devices in people's daily lives and work. In order to meet the shooting needs of some users, a support stand is used to support the shooting equipment during shooting, so as to free up the user's hands.

[0003] Existing support frames have some problems. For example, Chinese Utility Model Patent 2023212319328 discloses a method for locking or unlocking the second and third telescopic tube assemblies through the cooperation of a lever, transmission tube, first wedge, and second wedge, and for locking or unlocking the first telescopic tube assembly and the fixed seat through the cooperation of a lever, rotating shaft, pressure block, and connecting rod, ultimately achieving the expansion and retraction of the three-stage telescopic legs. However, in this type of support frame, locking or unlocking between the first and second telescopic tube assemblies, as well as between the second and third telescopic tube assemblies, cannot be accomplished through the same transmission tube, increasing the complexity of the locking structure and making production inconvenient. Therefore, there is an urgent need for a telescopic leg and support frame that can be quickly locked and unlocked to solve the above problems. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a telescopic leg tube and support frame with quick locking and unlocking capability.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a telescopic leg tube that can be quickly locked and unlocked, including a linkage rod and a number of leg tube assemblies connected in sequence. The linkage rod is passed through the number of leg tube assemblies. The leg tube assembly includes an outer tube, an inner tube, a push-pull assembly and a locking assembly.

[0006] The outer tube is fitted onto the inner tube;

[0007] The push-pull assembly is connected between the upper end of the outer tube, the upper end of the inner tube, and the linkage rod;

[0008] The locking assembly is connected between the lower end of the outer tube, the lower end of the inner tube, and the outer tube of the next-level foot tube assembly;

[0009] The push-pull assembly can move axially in a first direction relative to the linkage rod when the linkage rod rotates in the forward direction, so as to restrict the relative movement between the inner tube and the outer tube of the next-level foot tube assembly by driving the locking assembly through the inner tube; or, the push-pull assembly can move axially in a second direction relative to the linkage rod when the linkage rod rotates in the reverse direction, so as to release the restriction on the relative movement between the inner tube and the outer tube of the next-level foot tube assembly by driving the locking assembly through the inner tube.

[0010] As one of the preferred embodiments of this utility model, the push-pull assembly includes a fixed base and a pull sleeve;

[0011] The fixing seat is installed at the upper end of the outer tube and has a threaded groove thereon;

[0012] The pull sleeve is fitted onto the linkage rod and threadedly connected to the threaded groove. The pull sleeve is connected to the upper end of the inner tube and rotates synchronously with the linkage rod.

[0013] The linkage rod passes through the outer tube, inner tube, and threaded groove.

[0014] As one of the preferred embodiments of this utility model, the cross-sectional outline of the linkage rod is non-circular, and the pull sleeve is provided with a through groove adapted to the linkage rod, and the linkage rod passes through the through groove.

[0015] As one of the preferred embodiments of this utility model, the cross-sectional outline of the linkage rod is set to a rectangle.

[0016] As one of the preferred embodiments of this utility model, the locking component includes a first wedge block installed at the lower end of the inner tube and a second wedge block installed at the lower end of the outer tube, wherein the second wedge block abuts against the first wedge block and the outer tube of the next-level foot tube assembly.

[0017] As one of the preferred embodiments of this utility model, a telescopic leg tube that can be quickly unlocked also includes a fine-tuning component connected between the outer tube and the second wedge, used to adjust the distance between the second wedge and the first wedge.

[0018] As one of the preferred embodiments of this utility model, the fine-tuning component includes a threaded sleeve, one end of which is threadedly connected to the outer tube, and the other end of which is connected to the second wedge.

[0019] As one of the preferred embodiments of this utility model, an anti-slip plate is provided between the inner tube and the outer tube of the next-level foot tube assembly.

[0020] In one of the preferred embodiments of this utility model, the foot tube assembly is configured as three units.

[0021] A support frame, including the aforementioned telescopic legs.

[0022] The beneficial effects of this utility model are as follows: A telescopic leg tube and support frame that can be quickly locked and unlocked, the telescopic leg tube includes a linkage rod and several sequentially cascaded leg tube assemblies, the linkage rod is passed through several leg tube assemblies, and the leg tube assembly includes an outer tube, an inner tube, a push-pull assembly, and a locking assembly; the push-pull assembly can move axially in a first direction relative to the linkage rod when the linkage rod rotates in the forward direction, so as to drive the locking assembly through the inner tube to restrict the relative movement between the inner tube and the outer tube of the next-level leg tube assembly; or, the push-pull assembly can move axially in a second direction relative to the linkage rod when the linkage rod rotates in the reverse direction, so as to drive the locking assembly through the inner tube to release the restriction on the relative movement between the inner tube and the outer tube of the next-level leg tube assembly; through the above structure, multiple sets of leg tube assemblies can be locked and unlocked simultaneously through the linkage rod, so that the structure has uniformity, which not only improves the convenience of use, but also reduces the structural complexity and production cost. Attached Figure Description

[0023] 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:

[0024] Figure 1 This is a schematic diagram of a telescopic leg tube that can be quickly unlocked and locked in the retracted state.

[0025] Figure 2 This is a schematic diagram of a telescopic leg tube that can be quickly unlocked in its deployed state.

[0026] Figure 3 A cross-sectional view of a telescopic leg tube that can be quickly unlocked and delocked in the retracted state;

[0027] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle;

[0028] Figure 5 for Figure 3 A magnified view of a portion of region B in the middle;

[0029] Figure 6 for Figure 3 A magnified view of a portion of region C. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Reference Figures 1 to 6 This utility model provides a telescopic leg tube that can be quickly locked and unlocked, including a linkage rod 100 and a number of leg tube assemblies 200 connected in sequence. The linkage rod 100 passes through the number of leg tube assemblies 200. The leg tube assembly 200 includes an outer tube 210, an inner tube 220, a push-pull assembly 230 and a locking assembly 240.

[0035] The outer tube 210 is fitted onto the inner tube 220;

[0036] The push-pull assembly 230 is connected between the upper end of the outer tube 210, the upper end of the inner tube 220, and the linkage rod 100;

[0037] The locking component 240 is connected between the lower end of the outer tube 210, the lower end of the inner tube 220, and the outer tube 210 of the next-level foot tube assembly 200;

[0038] The push-pull assembly 230 can move axially in a first direction relative to the linkage rod 100 when the linkage rod 100 rotates in the forward direction, so as to drive the locking assembly 240 through the inner tube 220 to restrict the relative movement between the inner tube 220 and the outer tube 210 of the next-level foot tube assembly 200; or, the push-pull assembly 230 can move axially in a second direction relative to the linkage rod 100 when the linkage rod 100 rotates in the reverse direction, so as to drive the locking assembly 240 through the inner tube 220 to release the restriction on the relative movement between the inner tube 220 and the outer tube 210 of the next-level foot tube assembly 200.

[0039] Reference Figures 1-6 In this utility model, taking a three-group configuration of leg tube assemblies 200 as an example, specifically, each includes a leg tube assembly 200a, a leg tube assembly 200b, and a leg tube assembly 200c sequentially nested together. A linkage rod 100 is simultaneously inserted into each of the leg tube assemblies 200a, 200b, and 200c. An outer tube 210b is inserted into an inner tube 220a, and an outer tube 210c is inserted into an inner tube 220b. A push-pull assembly 230a is connected to the upper end of the outer tube 210a, the upper end of the inner tube 220a, and the linkage rod. On rod 100, locking component 240a is connected between the lower end of outer tube 210a, the lower end of inner tube 220a, and the outer wall of outer tube 210b; push-pull component 230b is connected between the upper end of outer tube 210b, the upper end of inner tube 220b, and linkage rod 100; and locking component 240b is connected between the lower end of outer tube 210b, the lower end of inner tube 220b, and the outer wall of outer tube 210c. Since foot tube assembly 200c is the last stage, inner tube 220c, push-pull component 230c, and locking component 240c are not required.

[0040] Specifically, when the linkage 100 rotates in the reverse direction, it will simultaneously drive the push-pull assembly 230a and push-pull assembly 230b to move upward, thereby driving the inner tube 220a and inner tube 220b to move upward, triggering the locking assembly 240a and locking assembly 240b to enter the unlocked state, that is, releasing the restriction on relative movement between the inner tube 220a and outer tube 210b and between the inner tube 220b and outer tube 210c, respectively. The entire leg tube is in the unlocked state, allowing the leg tube assembly 200b to axially expand or retract relative to the leg tube assembly 200a. Component 200c can be axially extended or retracted relative to leg tube assembly 200b; when linkage rod 100 rotates in the forward direction, it will simultaneously drive push-pull assembly 230a and push-pull assembly 230b to move downward, thereby driving inner tube 220a and inner tube 220b to move downward, triggering locking assembly 240a and locking assembly 240b to enter the locking state, that is, restricting the relative movement between inner tube 220a and outer tube 210b and between inner tube 220b and outer tube 210c respectively, the entire leg tube is in the locked state, and can maintain the extended state or the retracted state.

[0041] Reference Figures 3-6 In some embodiments, the push-pull assembly 230 includes a fixed base 231 and a pull sleeve 232; the fixed base 231 is installed on the upper end of the outer tube 210 and has a threaded groove 233 thereon; the pull sleeve 232 is sleeved on the linkage rod 100 and threadedly connected to the threaded groove 233, the pull sleeve 232 is connected to the upper end of the inner tube 220 and rotates synchronously with the linkage rod 100; the linkage rod 100 passes through the outer tube 210, the inner tube 220 and the threaded groove 233; specifically, when the linkage rod 100 rotates, it will drive the pull sleeve 232 to rotate synchronously. Since the pull sleeve 232 is threadedly connected to the threaded groove 233 on the fixed base 231, the pull sleeve 232 will be able to move axially relative to the linkage rod 100, thereby driving the inner tube 220 connected to it to move synchronously, and the locking assembly 240 connected to the inner tube 220 will switch between a locked state and an unlocked state.

[0042] Reference Figures 3-6 In some embodiments, the cross-sectional outline of the linkage rod 100 is non-circular, and the pull sleeve 232 is provided with a through groove 234 adapted to the linkage rod 100, and the linkage rod 100 passes through the through groove 234; preferably, the cross-sectional outline of the linkage rod 100 is set to rectangular; this setting can realize synchronous rotation and axial movement between the pull sleeve 232 and the linkage rod 100.

[0043] Reference Figures 3-6 In some embodiments, the locking component 240 includes a first wedge 241 installed at the lower end of the inner tube 220 and a second wedge 242 installed at the lower end of the outer tube 210. The second wedge 242 abuts against the first wedge 241 and the outer tube 210 of the next-stage foot tube assembly 200. When the inner tube 220 drives the first wedge 241 to move downward, the tightness between the first wedge 241 and the second wedge 242 will increase, thereby pushing the second wedge 242 to abut against the outer tube 210, thus restricting the axial movement between two adjacent foot tube assemblies 200. When the inner tube 220 drives the first wedge 241 to move upward, the tightness between the first wedge 241 and the second wedge 242 will decrease, thereby reducing the tightness between the second wedge 242 and the outer tube 210, thus releasing the restriction on the axial movement between two adjacent foot tube assemblies 200.

[0044] Reference Figures 3-6In some embodiments, a telescopic leg tube capable of quick locking and unlocking further includes a fine-tuning component 300 connected between the outer tube 210 and the second wedge 242, used to adjust the distance between the second wedge 242 and the first wedge 241. Preferably, the fine-tuning component 300 includes a threaded sleeve 310, one end of which is threadedly connected to the outer tube 210, and the other end of which is connected to the second wedge 242. Due to reasons such as manufacturing precision, assembly precision, or wear and tear, the tightness between the second wedge 242 and the first wedge 241 may not meet the locking requirements. In this case, the distance between the second wedge 242 and the first wedge 241 can be reduced by rotating the threaded sleeve 310, so that the second wedge 242 and the first wedge 241 can always maintain a good tightness effect.

[0045] Of course, the threaded sleeve 310 can also be used as an emergency unlocking function. Specifically, the power source of the linkage rod 100 can be manual or motor driven. When the linkage rod 100 is driven by a motor, the motor may not work for various reasons, causing the foot tube to be unable to unlock or lock. At this time, the distance between the second wedge 242 and the first wedge 241 can be changed by rotating the threaded sleeve 310, so that the second wedge 242 and the first wedge 241 are pressed together or separated from each other, which can also lock or unlock the axial movement between the two adjacent foot tube assemblies 200.

[0046] Reference Figures 3-6 In some embodiments, an anti-slip plate 400 is provided between the inner tube 220 and the outer tube 210 of the next-level foot tube assembly 200; by providing the anti-slip plate 400, a sliding damping effect is achieved between the inner tube 220 and the outer tube 210 of the next-level foot tube assembly 200, thereby improving the performance.

[0047] This utility model also provides a support frame, including the aforementioned telescopic leg tube.

[0048] The advantages of this utility model are: the above structure can simultaneously lock and unlock multiple sets of foot tube assemblies through the linkage rod, making the structure uniform, which not only improves the convenience of use, but also reduces the structural complexity and production cost.

[0049] 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 telescopic leg tube with quick locking and unlocking, characterized in that: It includes a linkage rod (100) and a number of sequentially cascaded foot tube assemblies (200). The linkage rod (100) passes through the number of foot tube assemblies (200). The foot tube assembly (200) includes an outer tube (210), an inner tube (220), a push-pull assembly (230), and a locking assembly (240). The outer tube (210) is sleeved on the inner tube (220); The push-pull assembly (230) is connected between the upper end of the outer tube (210), the upper end of the inner tube (220), and the linkage rod (100); The locking component (240) is connected between the lower end of the outer tube (210), the lower end of the inner tube (220), and the outer tube (210) of the next-level foot tube assembly (200); The push-pull assembly (230) can move axially in a first direction relative to the linkage rod (100) when the linkage rod (100) rotates in the forward direction, so as to drive the locking assembly (240) through the inner tube (220) to restrict the relative movement between the inner tube (220) and the outer tube (210) of the next-level foot tube assembly (200); or, the push-pull assembly (230) can move axially in a second direction relative to the linkage rod (100) when the linkage rod (100) rotates in the reverse direction, so as to drive the locking assembly (240) through the inner tube (220) to release the restriction on the relative movement between the inner tube (220) and the outer tube (210) of the next-level foot tube assembly (200).

2. The telescopic leg tube with quick locking and unlocking according to claim 1, characterized in that: The push-pull assembly (230) includes a fixed base (231) and a pull sleeve (232); The fixing seat (231) is installed on the upper end of the outer tube (210) and has a threaded groove (233) thereon; The pull sleeve (232) is sleeved on the linkage rod (100) and threadedly connected to the threaded groove (233). The pull sleeve (232) is connected to the upper end of the inner tube (220) and rotates synchronously with the linkage rod (100). The linkage rod (100) passes through the outer tube (210), the inner tube (220), and the threaded groove (233).

3. The telescopic leg tube with quick locking and unlocking according to claim 2, characterized in that: The cross-sectional outline of the linkage rod (100) is non-circular, and the pull sleeve (232) is provided with a through groove (234) that is adapted to the linkage rod (100), and the linkage rod (100) passes through the through groove (234).

4. A telescopic leg tube with quick locking and unlocking according to claim 3, characterized in that: The cross-sectional outline of the linkage rod (100) is set to a rectangle.

5. A telescopic leg tube with quick locking and unlocking according to claim 1, characterized in that: The locking assembly (240) includes a first wedge (241) installed at the lower end of the inner tube (220) and a second wedge (242) installed at the lower end of the outer tube (210). The second wedge (242) abuts against the first wedge (241) and the outer tube (210) of the next-level foot tube assembly (200).

6. A telescopic leg tube with quick locking and unlocking according to claim 5, characterized in that: It also includes a fine-tuning component (300) connected between the outer tube (210) and the second wedge (242) for adjusting the distance between the second wedge (242) and the first wedge (241).

7. A telescopic leg tube with quick locking and unlocking according to claim 6, characterized in that: The fine-tuning component (300) includes a threaded sleeve (310), one end of which is threadedly connected to the outer tube (210), and the other end of which is connected to the second wedge (242).

8. A telescopic leg tube with quick locking and unlocking according to claim 1, characterized in that: An anti-slip plate (400) is provided between the inner tube (220) and the outer tube (210) of the next-level foot tube assembly (200).

9. A telescopic leg tube with quick locking and unlocking according to claim 1, characterized in that: The foot tube assembly (200) is configured to have 3 units.

10. A support frame, characterized in that: Includes the telescopic leg tube as described in any one of claims 1-9.

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