Middle shaft assembly and supporting foot stool

Abstract

The utility model relates to a centre shaft assembly and a supporting foot stool, the supporting foot stool comprises the centre shaft assembly and a supporting frame, the centre shaft assembly comprises a fixed seat, a movable seat, a first centre shaft, a second centre shaft and a mounting seat, and the movable seat is rotatably connected with the fixed seat; the end part of the first middle shaft is rotationally connected with the fixed seat, and the first middle shaft can rotate around the central axis of the first middle shaft relative to the fixed seat; the second middle shaft is movably connected to the movable seat and can move relative to the movable seat in the axial direction of the second middle shaft, and the second middle shaft can further drive the movable seat to rotate relative to the fixed seat so that the second middle shaft and the first middle shaft can be aligned to each other in the axial direction of the second middle shaft and the first middle shaft. When the second middle shaft and the first middle shaft are mutually aligned in respective axial directions, the second middle shaft can move relative to the movable seat and is internally sleeved in the first middle shaft; the mounting seat is connected to the end part of the second middle shaft and is used for mounting photographic equipment; the first middle shaft is rotationally connected with the fixed seat, so that angle adjustment of the photographic equipment in the horizontal direction is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photography, in particular to a central axis component and a supporting tripod. Background Art

[0002] The central axis can be movably arranged on the supporting tripod, and the central axis can also be placed horizontally to achieve horizontal shooting, so as to facilitate the user's multi-angle shooting. For example, CN218645170U discloses a tripod that supports horizontal shooting, in which the central axis is movably connected to a movable connecting seat, and the movable connecting seat is rotatably connected to a fixed seat, so that the central axis can be placed horizontally to achieve horizontal shooting, and in the horizontal shooting state, the user needs to loosen the angle locking member to enable the fixed seat to rotate in the horizontal direction relative to the tripod body. In this process, the user needs to twist the angle locking member back and forth to achieve multi-angle shooting of the photographic equipment in the horizontal direction, which is cumbersome to operate and causes the problem of difficulty for users. Utility Model Content

[0003] The utility model provides a central axis assembly and a supporting tripod to solve the problem that when a user needs to take multi-angle photos in the horizontal direction, the user needs to twist a locking piece back and forth to achieve multi-angle photos of the photographic equipment in the horizontal direction, and the operation is cumbersome during the process, causing difficulty for the user.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A middle shaft assembly, comprising:

[0006] Fixed seat;

[0007] A movable seat, rotatably connected to the fixed seat;

[0008] A first central axis, an end of which is rotatably connected to the fixing seat, and the first central axis can rotate relative to the fixing seat around its central axis;

[0009] A second central axis is movably connected to the movable seat and can move relative to the movable seat along the axial direction of the second central axis, and the second central axis can also drive the movable seat to rotate relative to the fixed seat so that the second central axis and the first central axis are mutually aligned in their respective axial directions; when the second central axis and the first central axis are mutually aligned in their respective axial directions, the second central axis can move relative to the movable seat and be internally sleeved in the first central axis;

[0010] A mounting seat is connected to the end of the second central axis and is used for mounting photographic equipment.

[0011] In one embodiment, the fixed seat is provided with a fixing hole, and the central axis assembly includes a movable sleeve, which is arranged by an outer sleeve and fixed to the end of the first central axis and is arranged by an inner sleeve in the fixing hole. The movable sleeve is located at the upper limit of the depth direction of the fixing hole on the fixed seat, and the movable sleeve can rotate around the center line of the fixing hole relative to the fixed seat so that the movable sleeve can synchronously drive the first central axis to rotate around the center line of the fixing hole relative to the fixed seat; when the second central axis and the first central axis are aligned with each other in their respective axial directions, the second central axis can be internally sleeved in the first central axis through the movable sleeve.

[0012] In one of the embodiments, the outer wall of the movable sleeve is provided with a snap-fit ​​groove, and the inner wall of the fixing hole is provided with a hook protruding toward the inner side of the fixing hole. When the movable sleeve is sleeved in the fixing hole, the hook is snap-fitted into the snap-fit ​​groove to limit the movable sleeve from being separated from the fixing seat in the depth direction of the fixing hole.

[0013] In one embodiment, the engaging groove is disposed on the outer wall of the movable sleeve along the circumference of the movable sleeve, and the engaging hook is disposed on the inner wall of the fixing hole around the center line of the fixing hole.

[0014] In one of the embodiments, a tapered hole is provided at the end of the movable sleeve close to the fixed seat, and the radial dimension of the tapered hole gradually decreases from the side where the fixed seat is located toward the side away from the fixed seat; when the second central axis and the first central axis are aligned with each other in their respective axial directions, the second central axis is internally sleeved in the first central axis through the tapered hole.

[0015] In one embodiment, the movable seat is provided with a movable hole, the second central axis is passed through the movable hole and can move along the depth direction of the movable hole, and the second central axis can also rotate relative to the movable seat around the center line of the movable hole, and the central axis assembly also includes a locking piece, the locking piece is threadedly connected to the movable seat, and the locking piece moves relative to the movable seat along the radial direction of the movable hole so that the end of the locking piece abuts against the second central axis to limit the second central axis from moving relative to the movable seat along the depth direction of the movable hole.

[0016] In one embodiment, the central axis assembly also includes a damping rubber sleeve, which is internally sleeved in the movable hole and located between the movable seat and the second central axis. The damping rubber sleeve is located at the movable seat at the upper limit of the depth direction of the movable hole. The damping rubber sleeve is also circumferentially limited with the movable seat, and the damping rubber sleeve can increase the damping of the mutual rotation between the second central axis and the movable seat to limit the rotation of the second central axis around the center line of the movable hole.

[0017] In one embodiment, a plurality of first latch teeth are provided on the side surface of the fixed seat, and the plurality of first latch teeth are arranged at intervals circumferentially along the side surface of the fixed seat, and the direction of the plurality of first latch teeth also extends along the radial direction of the fixed seat; a plurality of second latch teeth are provided on the side surface of the movable seat, and the plurality of second latch teeth are arranged at intervals circumferentially along the side surface of the movable seat, and the direction of the plurality of second latch teeth also extends along the radial direction of the movable seat; and the central axis assembly includes a locking member, which is penetrated through the fixed seat and the movable seat, and the locking member can be twisted to drive the movable seat close to the fixed seat, so that the plurality of first latch teeth are aligned and assembled on the plurality of second latch teeth to limit the rotation of the movable seat relative to the fixed seat.

[0018] In one embodiment, the locking member includes a locking rod and a pressing cap, the locking rod is penetrated through the fixed seat and the movable seat, and the locking rod and the movable seat are circumferentially limited, the pressing cap is located at the fixed seat and is threadedly connected to the locking rod, and the central axis assembly includes an elastic member, the elastic member is located between the fixed seat and the pressing cap, the pressing cap can overcome the elastic force of the elastic member to rotate relative to the locking rod, so that the pressing cap drives the movable seat to approach the fixed seat through the locking rod so that the multiple first latch teeth are aligned and assembled with the multiple second latch teeth to limit the rotation of the movable seat relative to the fixed seat.

[0019] The utility model also provides a supporting tripod, comprising:

[0020] A support frame, comprising a connection seat and a plurality of support legs, wherein the connection seat is provided with a connection hole, and the plurality of support legs are all connected to the connection seat;

[0021] In the aforementioned central axis assembly, the first central axis is penetrated through the connecting hole to be movably connected with the connecting seat.

[0022] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:

[0023] The utility model provides a central axis component and a supporting tripod. The central axis component can be placed between a horizontal state and a vertical state to enable a photographic device to switch between horizontal shooting and vertical shooting. In the horizontal state, a fixing seat can be directly rotated relative to a first central axis, so that in the horizontal shooting state, the photographic device can be rotated in a horizontal direction to achieve multi-angle shooting of the photographic device. In this process, the operation is simple and convenient for users to use. This solves the problem that on a traditional supporting tripod, when in the horizontal state, the user needs to loosen the locking piece back and forth to achieve multi-angle shooting of the photographic device in the horizontal direction, and at the same time solves the problem that the operation is cumbersome in this process and causes difficulty for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of the state in which the middle axis assembly is installed on the support frame in the first embodiment of the utility model;

[0026] Figure 2 for Figure 1 The structural schematic diagram of the central shaft assembly shown is in a horizontal state;

[0027] Figure 3 for Figure 2 The overall structural schematic diagram of the middle shaft assembly shown;

[0028] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the fixed seat, movable seat and locking member shown;

[0029] Figure 5 for Figure 4 The overall structural diagram of the fixing seat shown;

[0030] Figure 6 for Figure 3 An exploded structural diagram of the central shaft assembly shown;

[0031] Figure 7 for Figure 3 A schematic cross-sectional structure diagram of the fixed seat and the movable sleeve shown;

[0032] Figure 8 for Figure 2 The overall structural diagram of the support frame is shown.

[0033] The following are the descriptions of the reference numerals:

[0034] 1. Middle axis assembly; 2. Supporting tripod; 3. Supporting frame; 4. Connecting seat; 5. Supporting leg; 6. Connecting hole; 7. Threaded button;

[0035] 10. Fixed seat; 20. Movable seat; 30. Locking member; 40. Elastic member; 50. First central axis; 60. Second central axis; 70. Mounting seat; 80. Locking member; 90. Damping rubber sleeve; 100. Movable sleeve;

[0036] 101, fixing hole; 102, first latching tooth; 103, latching groove; 104, latching hook; 105, tapered hole; 201, movable hole; 202, second latching tooth; 301, locking rod; 302, pressing cap; 801, lever lock. DETAILED DESCRIPTION

[0037] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] First embodiment

[0041] refer to Figure 1 The utility model provides a central axis assembly 1, which is movably arranged on a support frame 3. The central axis assembly 1 can be used to install photographic equipment. The central axis assembly 1 can be moved relative to the support frame 3 to rise and fall to adjust the shooting height, and the central axis assembly 1 can also rotate relative to the support frame 3 in the horizontal direction, so that the photographic equipment can shoot at multiple angles in the horizontal direction. The support frame 3 can be switched between an unfolded state and a retracted state. In the unfolded state, the support frame 3 forms a tripod structure to facilitate the support and fixation of the photographic equipment. Among them, the photographic equipment can be, but is not limited to, a camera, a smart phone, a tablet computer, etc.

[0042] refer to Figure 1 and Figure 2 The middle shaft assembly 1 can be switched between a vertical state and a horizontal state. Figure 1 It is shown that when the central axis assembly 1 is in a vertical state, the photographic device can take photos in a vertical direction. Figure 2As shown, the central axis assembly 1 is in a horizontal position, at which time the photographic equipment can shoot in a horizontal direction to increase the shooting angle.

[0043] refer to Figure 3 The middle axis assembly 1 includes a fixed seat 10 and a movable seat 20, the movable seat 20 is rotatably connected to the fixed seat 10, and the movable seat 20 can rotate relative to the fixed seat 10 and be stacked on the fixed seat 10. In this embodiment, the outer structure of the movable seat 20 and the fixed seat 10 is roughly the same, so that when the movable seat 20 is stacked on the fixed seat 10, the movable seat 20 can better fit the fixed seat 10. It can be understood that in other embodiments, the outer structure of the fixed seat 10 and the movable seat 20 can be different.

[0044] refer to Figure 4 , Figure 4 As shown, the fixed seat 10 is provided with a fixed hole 101, and the movable seat 20 is provided with a movable hole 201. When the movable seat 20 is stacked on the fixed seat 10, the movable hole 201 is aligned with the fixed hole 101, and the center line of the movable hole 201 coincides with the center line of the fixed hole 101.

[0045] refer to Figure 4 and Figure 5 The side of the fixed seat 10 is provided with a plurality of first latch teeth 102, which are arranged at intervals along the circumferential direction of the side of the fixed seat 10, and the direction of the plurality of first latch teeth 102 also extends along the radial direction of the fixed seat 10, and at the same time, the side of the movable seat 20 is also provided with a plurality of second latch teeth 202, which are arranged at intervals along the circumferential direction of the side of the movable seat 20, and the direction of the plurality of second latch teeth 202 also extends along the radial direction of the movable seat 20. When the movable seat 20 is rotatably connected with the fixed seat 10, the movable seat 20 can be driven so that the movable seat 20 is close to the fixed seat 10, so that the plurality of first latch teeth 102 are aligned and assembled with the plurality of second latch teeth 202, and at this time, the side of the first latch teeth 102 abuts against the side of the second latch teeth 202 to limit the movable seat 20 from rotating relative to the fixed seat 10. At the same time, the movable seat 20 can also be moved away from the fixed seat 10 to release the mutual contact between the first latching teeth 102 and the second latching teeth 202 , so that the movable seat 20 can rotate relative to the fixed seat 10 .

[0046] Continue to refer Figure 4, wherein, in order to realize the rotational connection between the fixed seat 10 and the movable seat 20, the central axis assembly 1 further includes a locking member 30, which is disposed through the fixed seat 10 and the movable seat 20, and the locking member 30 can be tightened to drive the movable seat 20 close to the fixed seat 10, so that the plurality of first latch teeth 102 are aligned and assembled with the plurality of second latch teeth 202, so as to limit the rotation of the movable seat 20 relative to the fixed seat 10. At the same time, the locking member 30 can also be loosened so that the movable seat 20 can release the mutual abutment with the fixed seat 10, and the plurality of first latch teeth 102 release the mutual abutment with the plurality of second latch teeth 202, so that the movable seat 20 can rotate relative to the fixed seat 10 around the central axis of the locking member 30.

[0047] Continue to refer Figure 4 The locking member 30 includes a locking rod 301 and a pressing cap 302. The locking rod 301 is disposed through the fixed seat 10 and the movable seat 20, and the locking rod 301 and the movable seat 20 are circumferentially limited. The pressing cap 302 is located at the fixed seat 10 and is threadedly connected with the locking rod 301. The pressing cap 302 can be tightened to drive the movable seat 20 to approach the fixed seat 10 through the locking rod 301, so that the plurality of first latch teeth 102 abut against the plurality of second latch teeth 202 to limit the movable seat 20 from rotating relative to the fixed seat 10. At the same time, the pressing cap 302 can also be loosened to separate the movable seat 20 from the fixed seat 10, so that the movable seat 20 can rotate relative to the fixed seat 10 around the central axis of the locking rod 301.

[0048] Continue to refer Figure 4 In order to increase the direct feedback of the user's hand when twisting the push cap 302, in one embodiment, the central axis assembly 1 further includes an elastic member 40, and the elastic member 40 is located between the fixed seat 10 and the push cap 302. When twisting the push cap 302, the push cap 302 needs to overcome the elastic force of the elastic member 40 to rotate relative to the locking rod 301, so that the push cap 302 drives the movable seat 20 to approach the fixed seat 10 through the locking rod 301, so that the multiple first latch teeth 102 are aligned and assembled with the multiple second latch teeth 202 to limit the rotation of the movable seat 20 relative to the fixed seat 10. At this time, since it is necessary to overcome the elastic force of the elastic member 40, the user's hand can have direct feedback in this process to increase the user's use feel.

[0049] It can be understood that in other embodiments, the elastic member 40 can be omitted, and in this case, only the locking rod 301 and the pressing cap 302 are provided.

[0050] refer to Figure 6The central axis assembly 1 also includes a first central axis 50 and a second central axis 60. The first central axis 50 is movably connected to the support frame 3 mentioned above so that the central axis assembly 1 is connected and fixed to the support frame 3. The end of the first central axis 50 is received in the fixing hole 101 to be rotatably connected to the fixing seat 10. The end of the second central axis 60 can be used to install photographic equipment. The second central axis 60 is penetrated through the movable hole 201 to be movably connected to the movable seat 20, and the second central axis 60 can move relative to the movable seat 20 along the depth direction of the movable hole 201. The second central axis 60 can also rotate relative to the movable seat 20 around the center line of the movable hole 201. At the same time, the second central axis 60 can drive the movable seat 20 to rotate relative to the fixing seat 10 so that the movable seat 20 is stacked on the fixing seat 10, so that the second central axis 60 can move relative to the movable seat 20 and be sleeved in the first central axis 50, so that the central axis assembly 1 is switched from a horizontal state to a vertical state.

[0051] Continue to refer Figure 3 , wherein, in order to realize that the end of the second central axis 60 can be used to install photographic equipment, in one embodiment, the central axis assembly 1 further includes a mounting seat 70, which is connected to the end of the second central axis 60 and is used to install photographic equipment to realize the installation and fixation of the photographic equipment. Specifically, in this embodiment, the mounting seat 70 is a pan / tilt seat, and it can be understood that in other embodiments, the mounting seat 70 can be a quick-release plate, so the specific type of the mounting seat 70 is not limited in any way.

[0052] It is understandable that in other embodiments, the movable seat 20 and the fixed seat 10 may not be overlapped with each other. In this case, it is only necessary that when the second central axis 60 drives the movable seat 20 to rotate relative to the fixed seat 10, the second central axis 60 and the first central axis 50 are aligned with each other in their respective axial directions.

[0053] It should be understood that in other embodiments, the second central axis 60 may not pass through the movable hole 201. In this case, the second central axis 60 may be movably connected to the side of the movable seat 20 via a track, that is, the movable hole 201 may be omitted.

[0054] It should be noted that since the movable seat 20 can rotate relative to the fixed seat 10, the photographic equipment can perform pitch and tilt shooting in the horizontal shooting state, and at the same time, since the fixed seat 10 is rotatably connected to the first central axis 50, the photographic equipment can rotate in the horizontal direction regardless of whether it is in the horizontal state or the vertical state, thereby increasing the shooting angle and facilitating user use.

[0055] To sum up, in the present invention, the central axis assembly 1 can be placed between a horizontal state and a vertical state to achieve switching between horizontal and vertical shooting. In the horizontal state, the fixing seat 10 can be directly rotated relative to the first central axis 50, so that in the horizontal state, the photographic equipment can be rotated in the horizontal direction to achieve multi-angle shooting of the photographic equipment. In this process, the operation is simple and convenient for users to use, thereby solving the problem that on a traditional support tripod, when in a horizontal state, the user needs to loosen the locking piece back and forth to achieve multi-angle shooting of the photographic equipment in the horizontal direction, and at the same time solves the problem that the operation is cumbersome and causes difficulties for users in this process.

[0056] refer to Figure 5 The central axis assembly 1 includes a locking member 80, which is connected to the movable seat 20 and is used to lock the second central axis 60 from sliding relative to the movable seat 20 in the movable hole 201, thereby fixing the photographing device. Specifically, in this embodiment, the locking member 80 changes the radial size of the movable hole 201 through the pull lock 810. When the pull lock 810 is operated, the aperture of the movable hole 201 is reduced, the movable seat 20 is more tightly fitted on the second central axis 60, and the extrusion force on the second central axis 60 along its radial direction becomes larger, so as to limit the second central axis 60 from moving relative to the movable seat 20 along the depth direction of the movable hole 201, and at the same time, the second central axis 60 is also limited from rotating around the center line of the movable hole 201, so as to achieve the relative fixation of the position of the second central axis 60. That is, when shooting, due to the gravity of the photographic device itself, the photographic device will drive the second central axis 60 to move or rotate, causing the shooting angle of the photographic device to be unstable and affecting the shooting quality. At the same time, the trigger lock 810 can also be reversed to release the contact with the second central axis 60, so that the second central axis 60 can move or rotate relative to the movable seat 20, and when the movable seat 20 is stacked on the fixed seat 10, the second central axis 60 can move relative to the movable seat 20 and be sleeved in the first central axis 50, and then the locking member 80 is tightened and abutted against the second central axis 60, so that in the vertical state, the position of the second central axis 60 is restricted and fixed. It should be understood that in other embodiments of the present application, the locking member 80 can also adopt a locking method such as a threaded locking member and a buckle lock.

[0057] Continue to refer Figure 6In one embodiment, the central axis assembly 1 further includes a damping rubber sleeve 90, which is made of plastic. The damping rubber sleeve 90 is sleeved inside the movable hole 201 and is located between the movable seat 20 and the second central axis 60. The damping rubber sleeve 90 is limited with the movable seat 20 in the depth direction of the movable hole 201. The damping rubber sleeve 90 is also limited with the movable seat 20 in the circumferential direction. The damping rubber sleeve 90 can increase the damping of the mutual rotation between the second central axis 60 and the movable seat 20 to limit the second central axis 60 from rotating around the center line of the movable hole 201. At the same time, the damping rubber sleeve 90 can also prevent the second central axis 60 from directly contacting the inner wall of the movable hole 201 and causing wear, so that the movable seat 20 and the second central axis 60 have a longer service life.

[0058] It can be understood that in other embodiments, the damping rubber sleeve 90 can be omitted, and in this case, the second central axis 60 can be directly inserted into the movable hole 201 .

[0059] It should be noted that, in this embodiment, the damping rubber sleeve 90 is in the shape of a tube, so that the damping rubber sleeve 90 can completely cover the inner wall of the movable hole 201, thereby preventing the second central axis 60 from abutting against the hole wall of the movable hole 201 and causing wear. It is understood that, in other embodiments, the damping rubber sleeve 90 can also be in the shape of a sheet and cover part of the inner wall of the movable hole 201.

[0060] Continue to refer Figure 6 In one embodiment, the central axis assembly 1 includes a movable sleeve 100, which is disposed on the outer side and fixed to the end of the first central axis 50 and is disposed on the fixing hole 101 on the inner side. The movable sleeve 100 is located at the upper limit of the depth direction of the fixing hole 101 on the fixing seat 10, and the movable sleeve 100 can rotate relative to the fixing seat 10 around the center line of the fixing hole 101 so that the movable sleeve 100 synchronously drives the first central axis 50 to rotate relative to the fixing seat 10 around the center line of the fixing hole 101. At the same time, when the second central axis 60 and the first central axis 50 are mutually aligned in their respective axial directions, the second central axis 60 can be internally sleeved in the first central axis 50 through the movable sleeve 100, so that the central axis assembly 1 is switched from a horizontal state to a vertical state.

[0061] refer to Figure 7In order to achieve the position limitation of the movable sleeve 100 with the fixing seat 10 in the depth direction of the fixing hole 101, in one embodiment, the outer wall of the movable sleeve 100 is provided with a clamping groove 103, and the inner wall of the fixing hole 101 is provided with a clamping hook 104 protruding to the inner side of the fixing hole 101. When the movable sleeve 100 is sleeved in the fixing hole 101, the clamping hook 104 is clamped in the clamping groove 103 to limit the movable sleeve 100 from being separated from the fixing seat 10 in the depth direction of the fixing hole 101 and achieve the position limitation of the movable sleeve 100. At the same time, the movable sleeve 100 can also overcome the resistance of the clamping hook 104 clamped in the clamping groove 103 and drive the clamping hook 104 to be separated from the clamping groove 103, so that the movable sleeve 100 can drive the first central axis 50 to be separated from the fixing seat 10.

[0062] It should be noted that, in this embodiment, the engaging groove 103 is disposed on the outer wall of the movable sleeve 100 along the circumference of the movable sleeve 100, and the hook 104 is disposed on the inner wall of the fixing hole 101 around the center line of the fixing hole 101, so that the movable sleeve 100 is more firmly restricted on the fixing seat 10. It is understood that, in other embodiments, the engaging groove 103 may not be disposed along the circumference of the movable sleeve 100, and the hook 104 may not be disposed on the inner wall of the fixing hole 101.

[0063] Continue to refer Figure 7 In one embodiment, a tapered hole 105 is provided at the end of the movable sleeve 100 close to the fixed seat 10, and the radial dimension of the tapered hole 105 gradually decreases from the side where the fixed seat 10 is located toward the side away from the fixed seat 10. Due to the provision of the tapered hole 105, when the second central axis 60 and the first central axis 50 are mutually aligned in their respective axial directions, the second central axis 60 can be better sheathed in the first central axis 50 through the movable sleeve 100.

[0064] Second embodiment

[0065] refer to Figure 2 and Figure 8 The utility model also provides a support tripod 2, which includes the central axis assembly 1 and the support frame 3 described above, and the support frame 3 includes a connecting seat 4 and a plurality of supporting legs 5, the connecting seat 4 is provided with a connecting hole 6, and the plurality of supporting legs 5 are all rotatably connected to the connecting seat 4 and can be switched between an unfolded state and a retracted state, so that the support frame 3 can be switched between an unfolded state and a retracted state. In the unfolded state, a tripod structure is formed between the plurality of supporting legs 5 and the connecting seat 4. In the retracted state, the plurality of supporting legs 5 are close to the connecting seat 4. Specifically, the first central axis 50 in the central axis assembly 1 is passed through the connecting hole 6 to be movably connected to the connecting seat 4, so as to realize the movably connection between the central axis assembly 1 and the support frame 3. At the same time, the first central axis 50 can move along the depth direction of the connecting hole 6 to adjust the shooting height of the photographic equipment, which is convenient for users to take photos.

[0066] It should be noted that in other embodiments, the multiple support legs 5 can be fixedly connected to the connecting seat 4. At this time, the multiple support legs 5 cannot rotate relative to the connecting seat 4 and switch between the deployed state and the stored state, and at this time, the connection state between the multiple support legs 5 and the connecting seat 4 is the deployed state.

[0067] Continue to refer Figure 8 In one embodiment, the supporting tripod 2 further comprises a threaded button 7, which is threadedly connected to the connecting seat 4, and under the action of an external force, the threaded button 7 is tightened so that the threaded button 7 can move relative to the connecting seat 4 along the radial direction of the connecting hole 6 and abut against the first central axis 50, so as to limit the first central axis 50 from moving relative to the connecting seat 4 along the depth direction of the connecting hole 6. At the same time, the threaded button 7 can also be loosened to release the abutment restriction on the first central axis 50, so that the first central axis 50 can move relative to the connecting seat 4 along the depth direction of the connecting hole 6 to adjust the shooting height.

[0068] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A middle shaft assembly, characterized in that: include: Fixed seat; A movable seat, rotatably connected to the fixed seat; A first central axis, an end of which is rotatably connected to the fixing seat, and the first central axis can rotate relative to the fixing seat around its central axis; A second central axis is movably connected to the movable seat and can move relative to the movable seat along the axial direction of the second central axis, and the second central axis can also drive the movable seat to rotate relative to the fixed seat so that the second central axis and the first central axis are mutually aligned in their respective axial directions; when the second central axis and the first central axis are mutually aligned in their respective axial directions, the second central axis can move relative to the movable seat and be internally sleeved in the first central axis; A mounting seat is connected to the end of the second central axis and is used for mounting photographic equipment.

2. The middle shaft assembly according to claim 1, characterized in that: The fixing seat is provided with a fixing hole, and the central axis assembly includes a movable sleeve, which is arranged by an outer sleeve and fixed to the end of the first central axis and is arranged by an inner sleeve in the fixing hole. The movable sleeve is located at the upper limit of the depth direction of the fixing hole in the fixing seat, and the movable sleeve can rotate around the center line of the fixing hole relative to the fixing seat so that the movable sleeve can synchronously drive the first central axis to rotate around the center line of the fixing hole relative to the fixing seat; when the second central axis and the first central axis are aligned with each other in their respective axial directions, the second central axis can be internally sleeved in the first central axis through the movable sleeve.

3. The middle shaft assembly according to claim 2, characterized in that: The outer wall of the movable sleeve is provided with a snap-fit ​​groove, and the inner wall of the fixing hole is provided with a snap hook protruding toward the inner side of the fixing hole. When the movable sleeve is sleeved in the fixing hole, the snap hook is snapped into the snap-fit ​​groove to limit the movable sleeve from being separated from the fixing seat in the depth direction of the fixing hole.

4. The middle shaft assembly according to claim 3, characterized in that: The clamping groove is disposed on the outer wall of the movable sleeve along the circumferential direction of the movable sleeve, and the clamping hook is disposed on the inner wall of the fixing hole around the center line of the fixing hole.

5. The middle shaft assembly according to claim 2, characterized in that: A tapered hole is provided at the end of the movable sleeve close to the fixed seat, and the radial size of the tapered hole gradually decreases from the side where the fixed seat is located toward the side away from the fixed seat; when the second central axis and the first central axis are aligned with each other in their respective axial directions, the second central axis is internally sleeved in the first central axis through the tapered hole.

6. The middle shaft assembly according to claim 1, characterized in that: The movable seat is provided with a movable hole, the second central axis is penetrated by the movable hole and can move along the depth direction of the movable hole, and the second central axis can also rotate relative to the movable seat around the center line of the movable hole, and the central axis assembly also includes a locking piece, the locking piece is threadedly connected to the movable seat, and the locking piece moves relative to the movable seat along the radial direction of the movable hole so that the end of the locking piece abuts against the second central axis to limit the second central axis from moving relative to the movable seat along the depth direction of the movable hole.

7. The middle shaft assembly according to claim 6, characterized in that: The central axis assembly also includes a damping rubber sleeve, which is internally sleeved in the movable hole and located between the movable seat and the second central axis. The damping rubber sleeve is located at the movable seat at the upper limit of the depth direction of the movable hole. The damping rubber sleeve is also circumferentially limited with the movable seat, and the damping rubber sleeve can increase the damping of the mutual rotation between the second central axis and the movable seat to limit the rotation of the second central axis around the center line of the movable hole.

8. The middle shaft assembly according to claim 1, characterized in that: A plurality of first latch teeth are arranged on the side surface of the fixed seat, and the plurality of first latch teeth are arranged at intervals in the circumferential direction along the side surface of the fixed seat, and the direction of the plurality of first latch teeth also extends along the radial direction of the fixed seat; a plurality of second latch teeth are arranged on the side surface of the movable seat, and the plurality of second latch teeth are arranged at intervals in the circumferential direction along the side surface of the movable seat, and the direction of the plurality of second latch teeth also extends along the radial direction of the movable seat; and the central axis assembly includes a locking member, which is penetrated by the fixed seat and the movable seat, and the locking member can be twisted to drive the movable seat close to the fixed seat, so that the plurality of first latch teeth are aligned and assembled on the plurality of second latch teeth to limit the rotation of the movable seat relative to the fixed seat.

9. The middle shaft assembly according to claim 8, characterized in that: The locking member includes a locking rod and a pressing cap, the locking rod is penetrated by the fixed seat and the movable seat, and the locking rod and the movable seat are circumferentially limited, the pressing cap is located at the fixed seat and is threadedly connected to the locking rod, and the central axis assembly includes an elastic member, the elastic member is located between the fixed seat and the pressing cap, the pressing cap can overcome the elastic force of the elastic member to rotate relative to the locking rod, so that the pressing cap drives the movable seat to approach the fixed seat through the locking rod so that the multiple first latching teeth are aligned and assembled with the multiple second latching teeth to limit the rotation of the movable seat relative to the fixed seat.

10. A support tripod, characterized in that: include: A support frame, comprising a connection seat and a plurality of support legs, wherein the connection seat is provided with a connection hole, and the plurality of support legs are all connected to the connection seat; The central axis assembly of any one of claims 1 to 9, wherein the first central axis is passed through the connecting hole to be movably connected to the connecting seat.

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