Tripod

Abstract

The utility model relates to a tripod which comprises a base, a middle shaft and a tripod body, the tripod body comprises three supporting legs, each supporting leg is provided with a rotating end and a supporting end which are opposite to each other, the tripod body can be switched between an unfolding state and a folding state, and when the tripod body is in the folding state, the three supporting ends are buckled at the bottom end of the middle shaft. Wherein a limiting structure is arranged between each supporting leg and the middle shaft, each limiting structure comprises a limiting block and an inserting groove, each limiting block comprises two plug pins, each plug pin is provided with a limiting end, the two plug pins are arranged in a spaced mode to form an avoiding space, and at least one of the limiting ends and the inner side wall of the inserting groove is provided with a first guiding face so that the two plug pins can be inserted into the inserting groove; the two limiting ends are extruded to be close to each other so that the avoiding space can be reduced until the supporting end is buckled to the bottom end of the middle shaft, and the two limiting ends can release reset force to abut against the inner side wall of the inserting groove so as to maintain the buckled state.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment technology, and in particular to a tripod. Background Technology

[0002] With the continuous improvement of living standards, the number of photography enthusiasts is growing rapidly. Tripods, such as tripod heads, are essential tools for photography enthusiasts. Tripod heads stabilize shooting equipment, preventing hand or arm discomfort from prolonged handheld use and ensuring stability for better shooting results. In photography, tripods are typically used to support the camera, with the center column used to mount it. For easy carrying, each leg needs to be folded inwards when not in use. However, while current technology allows for one-click unfolding and folding of the legs, inertia causes the tripod legs to tend to unfold after folding, making them unstable. This means the tripod cannot be locked properly or is difficult to lock, hindering daily storage and carrying. Utility Model Content

[0003] The present invention provides a tripod to solve the technical problem that tripods cannot be locked or are not easy to lock after being folded up, which is not conducive to people's daily storage and carrying.

[0004] This utility model discloses a tripod, comprising:

[0005] Base;

[0006] A central shaft is connected to the base, the central shaft having a bottom end away from the base;

[0007] The tripod body includes three legs, which are arranged around the central axis circumferentially. Each leg has a rotating end and a supporting end that are opposite each other along its axial direction. The rotating end is rotatably connected to the base so that the tripod body can switch between a closed state and an extended state. In the closed state, the three supporting ends are engaged with the bottom end of the central axis.

[0008] Each of the legs is provided with a limiting structure between itself and the central axis. The limiting structure includes a limiting block and a slot. One of the limiting block and the slot is located on the leg, and the other is located on the central axis. The limiting block includes two pins, which are spaced apart to form a first clearance space. Each pin has a limiting end at its end. At least one of the outer wall of the limiting end facing away from the first clearance space and the inner wall of the slot is provided with a first guide surface. The first guide surface extends along the insertion direction of the pin. When the pin is inserted into the slot, the limiting end and the inner wall of the slot move relative to each other along the first guide surface. The two limiting ends are squeezed together to reduce the first clearance space until the limiting end is engaged with the slot.

[0009] In one embodiment, the limiting end has a protrusion on the side facing away from the first clearance space, and the slot includes a track and a limiting groove communicating along the insertion direction. The first guide surface is provided on the outer side wall of the protrusion or the inner side wall of the track. The width of the track is smaller than the width of the limiting groove. When the limiting end is engaged with the slot, the protrusion is limited in the limiting groove to prevent the pin from disengaging from the slot in a direction away from the insertion direction.

[0010] In one embodiment, the protrusion and the pin are connected to form a step, the step being located on the side of the protrusion facing away from the insertion direction. The step includes a first step surface and a second step surface connected at an angle, the second step surface being connected to the first step surface and extending away from the insertion direction. At least one of the first step surface and the inner wall of the limiting groove is provided with a second guide surface, the second guide surface extending inclined to the insertion direction. The outer wall of the protrusion and the inner wall of the limiting groove can move relative to each other along the second guide surface until the protrusion disengages from the limiting groove. Then, the protrusion and the inner wall of the track move relative to each other along the first guide surface until the pin disengages from the slot.

[0011] In one embodiment, the first guide surface is provided on the outer side wall of the protrusion, and the bottom wall of the slot along the insertion direction is provided with a limiting surface. When the limiting end is engaged with the slot, the first guide surface and the limiting surface are parallel to each other and spaced apart.

[0012] In one embodiment, along the insertion direction perpendicular to the insertion direction, the opposite side walls of the limiting groove are recessed to form a slot communicating with the limiting groove. When the limiting end is engaged with the slot, the protrusion is aligned and embedded in the slot along the insertion direction perpendicular to the insertion direction. The protrusion and the inner side wall of the slot enclose a second clearance space. The first guide surface and the second guide surface extend and intersect. The limiting end moves in and out of the second clearance space along the first guide surface, and the protrusion moves in and out of the second clearance space along the second guide surface, so that the protrusion moves into or out of the slot.

[0013] In one embodiment, the length extension directions of the two pins in each of the limiting structures are parallel to each other and perpendicular to the axial direction of the leg, and when the limiting end is engaged with the slot, the length extension direction of the pin is perpendicular to the axial direction of the central axis.

[0014] In one embodiment, when the limiting end is engaged with the slot, the end positions of the limiting ends in each of the limiting structures are located in the same annular plane, and the annular plane is perpendicular to the axial direction of the central axis.

[0015] In one embodiment, the slot is located on the end face of the bottom end of the central shaft, and the pin is slidably connected to the inner sidewall of the support end along the axial direction of the leg, so that the pin disengages from the slot along the axial direction of the central shaft.

[0016] In one embodiment, the central shaft includes an end cap that covers the bottom end of the central shaft, the end cap being circumferentially limited to the bottom end of the central shaft, and a slot being provided on the side of the end cap facing away from the bottom end of the central shaft.

[0017] In one embodiment, the pin is disposed on the inner side wall of the support leg and spaced apart from the side edge of the support leg. The pin and the side wall of the support leg facing away from the first clearance space form a limiting slot. The inner side wall of the slot is connected to the side wall of the bottom end of the central shaft to form a limiting block. When the limiting end is engaged with the slot, the limiting block is aligned and fitted into the limiting slot.

[0018] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0019] This utility model provides a tripod that can be used as a support in its unfolded state and as a selfie stick in its folded state. In the folded state, the support end engages with the slot via spaced pins, locking it to the bottom of the central axis. The tripod's locking structure does not require additional reset components; the gap between the two spaced pins provides sufficient locking force for folding and locking. Unlocking is also simple; the user only needs to pry the support end to disengage the pins from the slots, releasing the folding restriction. Therefore, the tripod's folding and locking locking structure of this application is simple, easy to unlock, and highly practical. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a tripod in a stowed state according to an embodiment of this application;

[0022] Figure 2 for Figure 1 The diagram shows the tripod in its unfolded state.

[0023] Figure 3 for Figure 2 A structural schematic diagram of the tripod from another perspective;

[0024] Figure 4 For along Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0025] Figure 5 for Figure 4 The cross-sectional view shown is an enlarged schematic diagram of a limiting structure.

[0026] The annotations in the attached figures are explained as follows:

[0027] 10. Tripod; 100. Base; 200. Center column; 210. Bottom end of center column; 220. Limiting block; 230. End cap; 300. Tripod body; 301. Support leg; 310. Rotating end; 320. Support end; 330. Limiting slot; 400. Limiting structure; 401. Limiting block; 410. Pin; 411. Limiting end; 412. First guide surface; 420. Slot; 421. Rail; 422. Limiting groove; 423. Second guide surface; 424. Limiting surface; 425. Slot; 426. Second clearance space; 430. First clearance space; 440. Protrusion; 450. Step; 451. First step surface; 452. Second step surface; 20. Universal head; 21. Threaded interface; 22. Clamp. Detailed Implementation

[0028] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "one" and "the other" indicate that the positions of the two cooperating structures can be changed, but the effect and function are the same, such as the alignment and fitting of a protrusion and a slot.

[0032] Reference Figure 1 and Figure 2This application provides a tripod 10 that is easy to fold and store and easy to unfold and support. The tripod 10 includes a base 100, a central column 200, and a tripod body 300. The base 100 serves as a connection or mounting structure. One side of the base 100 is used to directly or indirectly mount shooting equipment. Optionally, a gimbal 20 is connected to one side of the base 100. The gimbal 20 is used to mount the shooting equipment. Optionally, the structure of the gimbal 20 for mounting the shooting equipment includes, but is not limited to, a threaded interface 21. Figure 1 As shown), clamp 22 ( Figure 2 (as shown), cold shoe interface, etc. Of course, in other embodiments, the base 100 can also directly mount the shooting equipment. The central axis 200 is connected to the base 100, and the central axis 200 has a central axis bottom end 210 away from the base 100. The tripod body 300 is connected to the base 100, and the tripod body 300 includes three legs 301. The three legs 301 are arranged around the central axis 200 circumferentially. Each leg 301 has a rotating end 310 and a supporting end 320 that are opposite to each other along its axial direction. The rotating end 310 is rotatably connected to the base 100. The multiple rotating ends 310 can swing up and down relative to the base 100 to drive the multiple supporting ends 320 to move closer or further away from each other, so that the tripod body 300 can be in the closed state ( Figure 1 ) and unfolded state ( Figure 2 Switch between ) Figure 1 This illustrates that when the tripod body 300 is in the closed state, the three legs 301 are in a side-by-side and close-to-the-center column 200 posture, making it convenient for the user to hold and use. At this time, the three legs 301 are close to the outer wall of the center column 200, and the three support ends 320 are fastened to the bottom end 210 of the center column. Figure 2 The illustration shows that when the tripod body 300 is in the unfolded state, the three legs 301 spread out around the central axis 200 to present a support posture, making it convenient for users to support on the support surface. It is worth noting that in this application, the number of legs 301 is not limited, but there are at least three to achieve the support posture. In other embodiments, there may be four or more.

[0033] Reference Figure 3-5Each support leg 301 is provided with a set of limiting structures 400 between it and the central shaft 200. Each set of limiting structures 400 includes a limiting block 401 and a slot 420 that cooperate with each other. One of the limiting block 401 and the slot 420 is provided on the support leg 301, and the other is provided on the central shaft 200. The limiting block 401 includes two pins 410. The two pins 410 are spaced apart, and the gap between them forms a first clearance space 430. The pin 410 has a limiting end 411 at its end. The limiting end 411 is opposite to the outer wall surface of the first clearance space 430 and the inner side wall of the slot 420. At least one of them is provided with a first guide surface 412. The first guide surface 412 extends along the insertion direction inclined to the pin 410. When the pin 410 is inserted into the slot 420, the limiting end 411 moves relative to the inner wall of the slot 420 along the first guide surface 412. The two limiting ends 411 are squeezed together to reduce the first clearance space 430 until the limiting end 411 is engaged in the slot 420 and the support end 320 is engaged in the bottom end 210 of the central axis to maintain the closed state of the tripod body 300. Here, as the two pins 410 move along the slot 420, the two limiting ends 411 move closer to each other to accumulate a restoring force until the limiting ends 411 are fully engaged in the slot 420. The two limiting ends 411 then separate momentarily to release the restoring force and abut against the inner wall of the slot 420, thereby stabilizing the stored and locked state of the tripod 10.

[0034] The tripod 10 provided in this application can be used as a support in its unfolded state and as a selfie stick in its folded state. In the folded state, the support end 320 engages with the slot 420 via spaced-apart pins 410, which in turn engage with the slot 420 to lock onto the bottom end 210 of the central axis. The limiting structure 400 in the tripod 10 does not require an additional reset component; the gap between the two spaced-apart pins 410 is sufficient to provide locking force for the tripod 10 to be stored and locked. Unlocking is also simple; the user only needs to pry the support end 320 to disengage the pins 410 from the slot 420, thus releasing the storage restriction. Therefore, the limiting structure 400 for locking the tripod 10 in this application is simple, easy to unlock, and highly practical.

[0035] Preferably, in conjunction with reference Figure 4 and Figure 5In one embodiment, the limiting end 411 has a protrusion 440 on the side facing away from the first clearance space 430. The slot 420 includes a track 421 and a limiting groove 422 that are connected along the insertion direction. The first guide surface 412 is provided on the outer side wall of the protrusion 440 or the inner side wall of the track 421. The width of the track 421 is smaller than the width of the limiting groove 422. When the limiting end 411 is engaged with the slot 420, the protrusion 440 is simultaneously limited in the limiting groove 422 to prevent the pin 410 from disengaging from the slot 420 along the direction away from the insertion, thereby stably abutting the leg 301 against the outer side wall of the central shaft 200 and maintaining the entire tripod 10 in its retracted state. The dynamic cooperation between the protrusion 440, the track 421 and the limiting groove 422 can enhance the stability of the tripod 10 in its retracted and locked state. It should be noted that, without considering the storage stability of the tripod 10, the presence or absence of the protrusion 440 is not limited, the relative dimensions of the track 421 and the limiting groove 422 are not limited, and the shape of the slot 420 is not limited.

[0036] Preferably, refer to Figure 5 In one embodiment, the protrusion 440 and the pin 410 are connected to form a step 450. The step 450 is located on the side of the protrusion 440 away from the insertion direction. The step 450 includes a first step surface 451 and a second step surface 452 connected at an angle. The second step surface 452 is connected to the first step surface 451 and extends away from the insertion direction. At least one of the first step surface 451 and the limiting groove 422 is provided with a second guide surface 423. The second guide surface 423 extends inclined to the insertion direction. The inner sidewall of the protrusion 440 and the limiting groove can move relative to each other along the second guide surface 423 until the protrusion 440 disengages from the limiting groove 422. Then, the inner sidewall of the protrusion 440 and the track 421 move relative to each other along the first guide surface 412 until the pin 410 disengages from the slot 420. The support leg 301 is unlocked and swings relative to the base 100, and the leg body 300 switches from the closed state to the unfolded state. It should be noted that the second guide surface 423 is used to guide the assist pin 410 out of the slot 420. In other embodiments, the second guide surface 423 may not be provided.

[0037] Preferably, refer to Figure 5In one embodiment, a first guide surface 412 is provided on the outer wall of the protrusion 440, and a limiting surface 424 is provided on the bottom wall of the slot 420 along the insertion direction. When the limiting end 411 is engaged with the slot 420, the first guide surface 412 and the limiting surface 424 are parallel to each other and spaced apart. Specifically, the limiting surface 424 is inclined to the insertion direction, and the inclination angle of the limiting surface 424 is the same as the inclination angle of the first guide surface 412, so that the first guide surface 412 and the limiting surface 424 face each other, thereby enhancing the stability of the tripod 10 in the stored and locked state. In addition, the gap between the first guide surface 412 and the limiting surface 424 can help the limiting end 411 move out of the slot 420. It should be noted that, without considering the storage stability of the tripod 10, the presence or absence of the limiting surface 424 is not limited, nor is the inclination angle of the limiting surface 424 limited.

[0038] Preferably, in conjunction with reference Figure 4 and Figure 5 In one embodiment, along the direction perpendicular to the insertion, the opposite side walls of the limiting groove 422 are recessed to form a slot 425 that communicates with the limiting groove 422. When the limiting end 411 is engaged with the slot 420, the protrusion 440 is aligned and embedded in the slot 425 along the direction perpendicular to the insertion to prevent the limiting end 411 from shaking in the slot 420. Figure 5 This illustrates that, along the direction perpendicular to the insertion, two slots 425 form a bracket "<>" posture to engage and limit the two protrusions 440, thereby enhancing the stability of the tripod 10 in its retracted and locked state. Furthermore, the protrusions 440 and the inner wall of the slots 425 enclose a second clearance space 426. The first guide surface 412 and the second guide surface 423 extend and intersect. The limiting end 411 moves along the first guide surface 412 into and out of the second clearance space 426, and the protrusions 440 move along the second guide surface 423 into and out of the second clearance space 426, allowing the protrusions 440 to move into or out of the slots 425. When the pin 410 moves within the slot 420, the second clearance space 426 provides deformation space for the pin 410. This prevents the pin 410 from being continuously stressed and easily damaged or broken when inserted into the slot 420, and also facilitates the user to apply force to disengage the pin 410 from the slot 420. It should be noted that, without considering the stability of the tripod 10 in the locked state or the safety protection of the pin 410, the presence or absence of the slot 425 and the second clearance space 426 is not limited.

[0039] To further enhance the stability of the tripod 10 in its folded and locked state, this application also provides several optimized design details, as follows:

[0040] refer to Figure 5In one embodiment, the length extension directions of the two pins 410 in each set of limiting structures 400 are parallel to each other and perpendicular to the axial direction of the corresponding support leg 301. When the limiting end 411 is engaged with the slot 420, the length extension direction of the pin 410 is perpendicular to the axial direction of the central axis 200, that is, the insertion direction is perpendicular to the axial direction of both the support leg 301 and the central axis 200, so as to further enhance the stability of the tripod 10 in the stored and locked state.

[0041] refer to Figure 4 In one embodiment, when the limiting end 411 is engaged with the slot 420, the end position of the limiting end 411 in each set of limiting structures 400 is in the same annular plane, which is perpendicular to the axial direction of the central axis 200. This makes the force between the support leg 301 and the central axis 200 balanced and stable, so as to further enhance the stability of the tripod 10 in the stored and locked state.

[0042] Reference Figure 3 and Figure 4 In one embodiment, a pin 410 is disposed on the inner side wall of the support leg 301 and spaced apart from the side edge of the support leg 301. The pin 410 and the inner side wall of the support leg 301 facing away from the first clearance space 430 enclose to form a limiting slot 330. The inner side wall of the slot 420 connects to the side wall of the bottom end 210 of the central shaft to form a limiting block 220. When the limiting end 411 is engaged with the slot 420, the limiting block 220 is simultaneously aligned and embedded in the limiting slot 330. The compact structure reduces the engagement gap between the support leg 301 and the bottom end 210 of the central shaft, thereby further enhancing the stability of the tripod 10 in the folded and locked state. Figure 4 As shown, the limiting slot 330 is formed by any two adjacent legs 301 and two corresponding adjacent pins 410 (these two adjacent pins 410 come from different limiting blocks 401), and the limiting slot 330 is located between any two adjacent limiting blocks 401; the limiting block 220 is located between any two adjacent slots 420.

[0043] It should be noted that, without considering the stability of the tripod 10 in the folded and locked state, this application does not limit the extension direction of the limiting end 411, the circumferential distribution design of the limiting end 411, the setting position of the pin 410 on the support leg, or the setting state of the slot 420 on the bottom end 210 of the central axis. The limiting block 220 and the limiting slot 330 are not limited, as long as the pin 410 can be inserted into the slot 420.

[0044] Preferably, refer to Figure 3In one embodiment, the slot 420 is located on the end face of the bottom end 210 of the central shaft, and the pin 410 is slidably connected to the inner wall of the support leg 301 (not shown) along the axial direction of the support leg 301, so that the pin 410 can move along the axial direction of the central shaft 200 to disengage from the slot, thereby expanding the unlocking operation of the tripod 10. It should be noted that in this application, the pin 410 can be fixedly connected to the inner wall of the support leg 301, or it can be slidably connected to the inner wall of the support leg 301, without limitation.

[0045] Preferably, refer to Figure 3 In one embodiment, the central shaft 200 includes an end cap 230 that covers the bottom end 210 of the central shaft. The end cap 230 is circumferentially limited to the bottom end 210 of the central shaft, and a slot 420 is provided on the side of the end cap 230 facing away from the bottom end 210 of the central shaft. The end cap 230 is used to protect the bottom end 210 of the central shaft. During the repeated insertion and removal of the pin 410 into the slot 420, the slot 420 is easily worn. When the slot 420 is worn and deformed and can no longer stably limit the pin 410, the user can replace the end cap 230 to provide a new slot 420. Similarly, the pin 410 is also easily worn, deformed and damaged, so the pin 410 can also be designed to be detachably connected to the inner wall of the support leg 301 to facilitate the replacement of the pin 410 and ensure the stability of the entire tripod 10 in the locked and stored state. It should be noted that in other embodiments, the slot 420 may also be directly provided on the end face of the bottom end 210 of the central shaft, and the provision of the end cover 230 is not limited.

[0046] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A tripod, characterized in that, include: Base; A central shaft is connected to the base, the central shaft having a bottom end away from the base; The tripod body includes three legs, which are arranged around the central axis circumferentially. Each leg has a rotating end and a supporting end that are opposite each other along its axial direction. The rotating end is rotatably connected to the base so that the tripod body can switch between a closed state and an extended state. In the closed state, the three supporting ends are engaged with the bottom end of the central axis. Each of the legs is provided with a limiting structure between itself and the central axis. The limiting structure includes a limiting block and a slot. One of the limiting block and the slot is located on the leg, and the other is located on the central axis. The limiting block includes two pins, which are spaced apart to form a first clearance space. Each pin has a limiting end at its end. At least one of the outer wall of the limiting end facing away from the first clearance space and the inner wall of the slot is provided with a first guide surface. The first guide surface extends along the insertion direction of the pin. When the pin is inserted into the slot, the limiting end and the inner wall of the slot move relative to each other along the first guide surface. The two limiting ends are squeezed together to reduce the first clearance space until the limiting end is engaged with the slot.

2. The tripod according to claim 1, characterized in that, The limiting end has a protrusion on the side facing away from the first clearance space. The slot includes a track and a limiting groove that are connected along the insertion direction. The first guide surface is provided on the outer side wall of the protrusion or the inner side wall of the track. The width of the track is smaller than the width of the limiting groove. When the limiting end is engaged with the slot, the protrusion is limited in the limiting groove to prevent the pin from disengaging from the slot along the direction away from the insertion direction.

3. The tripod according to claim 2, characterized in that, The protrusion connects with the pin to form a step, the step being located on the side of the protrusion facing away from the insertion direction. The step includes a first step surface and a second step surface connected at an angle, the second step surface being connected to the first step surface and extending away from the insertion direction. At least one of the first step surface and the inner wall of the limiting groove is provided with a second guide surface, the second guide surface extending inclined to the insertion direction. The outer wall of the protrusion and the inner wall of the limiting groove can move relative to each other along the second guide surface until the protrusion disengages from the limiting groove. Then, the protrusion and the inner wall of the track move relative to each other along the first guide surface until the pin disengages from the slot.

4. The tripod according to claim 3, characterized in that, The first guide surface is provided on the outer side wall of the protrusion, and the bottom wall of the slot along the insertion direction is provided with a limiting surface. When the limiting end is engaged with the slot, the first guide surface and the limiting surface are parallel to each other and spaced apart.

5. The tripod according to claim 4, characterized in that, Along the direction perpendicular to the insertion, the opposite side walls of the limiting groove are recessed to form a slot communicating with the limiting groove. When the limiting end is engaged with the slot, the protrusion is aligned and embedded in the slot along the direction perpendicular to the insertion. The protrusion and the inner side wall of the slot enclose a second clearance space. The first guide surface and the second guide surface extend and intersect. The limiting end moves in and out of the second clearance space along the first guide surface, and the protrusion moves in and out of the second clearance space along the second guide surface, so that the protrusion moves into or out of the slot.

6. The tripod according to claim 1, characterized in that, In each of the limiting structures, the length extension directions of the two pins are parallel to each other and perpendicular to the axial direction of the support leg. When the limiting end is engaged with the slot, the length extension direction of the pin is perpendicular to the axial direction of the central axis.

7. The tripod according to claim 1, characterized in that, When the limiting end is engaged with the slot, the end position of the limiting end in each limiting structure is in the same annular plane, and the annular plane is perpendicular to the axial direction of the central axis.

8. The tripod according to claim 1, characterized in that, The slot is located on the end face of the bottom end of the central shaft, and the pin is slidably connected to the inner side wall of the support end along the axial direction of the leg, so that the pin disengages from the slot along the axial direction of the central shaft.

9. The tripod according to claim 8, characterized in that, The central shaft includes an end cap that covers the bottom end of the central shaft. The end cap is circumferentially limited to the bottom end of the central shaft, and the slot is provided on the side of the end cap facing away from the bottom end of the central shaft.

10. The tripod according to claim 1, characterized in that, The pin is located on the inner side wall of the support leg and is spaced apart from the side edge of the support leg. The pin and the side wall of the support leg facing away from the first clearance space form a limiting slot. The inner side wall of the slot is connected to the side wall of the bottom end of the central shaft to form a limiting block. When the limiting end is engaged with the slot, the limiting block is aligned and fitted into the limiting slot.

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