Quick release device and photographic equipment

Abstract

The utility model provides a quick dismounting device and photographic equipment, the quick dismounting device comprises a handle part, a mounting seat and a driving part, the mounting seat and the handle part are fixedly connected and jointly form a shaft hole, the shaft hole is used for being connected with an external connecting part, the mounting seat is provided with a pressing part, and the pressing part can move between a loosening position and a pressing position relative to the mounting seat; and the driving part is movably arranged outside the mounting seat and the handle part in a sleeving manner and is used for driving the pressing part to move between a loosening position and a pressing position, the pressing part extends into the shaft hole and is pressed on the connecting part at the pressing position, and the pressing part is far away from the connecting part at the loosening position. According to the novel quick release device, the pressing and holding piece is used for pressing the connecting piece in an extruding and fastening mode, the torsion bearing capacity of the quick release device is enhanced, then the stability is enhanced, the connecting piece can be pressed or loosened through movement of the driving piece, operation is easy and convenient, and good product experience is brought to a user.

Description

Technical Field

[0001] This application relates to the technical field of photographic equipment, and particularly relates to a quick-release device and a photographic apparatus. Background Art

[0002] With the continuous development of film and television technology, various photographic auxiliary equipment are more and more widely used. For example, a base quick-release handle is mainly applied to a tripod, which can quickly adjust the shooting angle of a camera and has a function of quick detachment. The existing base quick-release handle fixes a screw shaft through a worm and a worm gear. Specifically, the worm and the worm gear are arranged on one side of the screw shaft, a gear is arranged outside the worm and the worm gear, and the gear meshes with the external tooth pattern of the screw shaft. When the worm and the worm gear rotate, they drive the screw shaft to move up and down, so as to realize the adjustment of the extending length of the screw shaft. When the worm and the worm gear do not rotate, the screw shaft is relatively fixed. However, there are still some problems in using the worm and the worm gear for self-locking. Since the gear is small, the phenomenon of gear slipping will occur when the torque is slightly larger, and the stability is poor. Moreover, the worm and the worm gear will hold against the middle part of the inserted screw shaft to ensure the meshing degree, but the upper and lower ends of the screw shaft are not fixed, and the screw shaft may shake slightly, which will also cause scratches on the inner wall of the shaft tube into which the screw shaft is inserted and dust enters. In addition, the structure of this quick-release handle is difficult to improve, and the upgrade has limitations. Summary of the Invention

[0003] In view of this, this application provides a quick-release device and a photographic apparatus that can effectively solve the above problems.

[0004] This application provides a quick-release device, including a handle member, a mounting seat and a driving member. The mounting seat is fixedly connected to the handle member and jointly forms a shaft hole for connecting an external connecting member. The mounting seat is provided with a pressing member, and the pressing member can move relative to the mounting seat between a release position and a pressing position. The driving member is movably sleeved outside the mounting seat and the handle member to drive the pressing member to move between the release position and the pressing position. When in the pressing position, the pressing member extends into the shaft hole and presses on the connecting member. When in the release position, the pressing member is away from the connecting member.

[0005] In one embodiment, the cross-sectional dimension of the shaft hole is larger than the cross-sectional dimension of the connecting member. When the pressing member presses the connecting member, the connecting member is inclined and abuts against the shaft hole for locking.

[0006] In one embodiment, the driving member includes a sleeve and a driving block. The sleeve is movably sleeved outside the mounting seat and the handle member. The driving block is fixedly arranged on the inner wall of the sleeve, and the driving block is located between the sleeve and the mounting seat for driving and cooperating with the pressing member.

[0007] In one embodiment, the driving member can move between a first position and a second position along the axial direction of the shaft hole. When in the first position, the driving block is away from the pressing member, and the pressing member is in the releasing position. When in the second position, the driving block drives the pressing member to move from the releasing position to the pressing position, and the driving block is clamped and fixed between the pressing member and the sleeve.

[0008] In one embodiment, the pressing member has a mating inclined surface, and the driving block has a driving inclined surface, and the driving inclined surface is in driving cooperation with the mating inclined surface; and / or, a first elastic member is provided between the sleeve and the handle member, and the first elastic member applies an elastic biasing force to the sleeve to make it move towards the first position.

[0009] In one embodiment, the quick-release device includes two pressing members, and the two pressing members are arranged on opposite sides of the shaft hole, and the driving member can selectively drive one of the two pressing members to press the connecting member.

[0010] In one embodiment, the driving member can rotate between a first rotation position and a second rotation position with the axial direction of the shaft hole as the axis. When in the first rotation position, the driving block of the driving member is correspondingly located on the side where one of the two pressing members is located. When in the second rotation position, the driving block is correspondingly located on the side where the other of the two pressing members is located.

[0011] In one embodiment, the mounting seat includes a seat body and a first connecting portion and a second connecting portion provided at both ends of the seat body. The second connecting portion is connected to the handle member. The shaft hole penetrates through the first connecting portion, the seat body and the second connecting portion. Activity positions communicating with the shaft hole are provided on opposite sides of the seat body, and the pressing member is movably arranged in the activity positions; and / or, the pressing member includes a base portion and a driving portion and a pressing portion provided on opposite sides of the base portion. The driving portion cooperates with the driving member, and the pressing portion has a pressing surface adapted to the shape of the connecting member, and the pressing surface is used to press against the side portion of the connecting member.

[0012] In one embodiment, the pressing surface is a butting arc surface, screw teeth are formed on the butting arc surface, and the radian of the butting arc surface of the two pressing members is different.

[0013] In one embodiment, a second elastic member is provided between the two base portions, and the second elastic member applies an elastic biasing force to the two pressing members to move them away from each other; and / or, a rotation space and a stopping portion are formed in a part of the side wall of the seat body between the active position and the second connecting portion. The driving block is rotatably disposed in the rotation space. The stopping portion is located on a side of the rotation space away from the second connecting portion and is used to stop the driving block. Communication ports communicating with the active position are respectively provided at both ends of the rotation space corresponding to the two driving portions.

[0014] The present application further provides a photographic device, including a connecting member and the quick-release device as described above. The connecting member includes a first locking portion, a second locking portion, and a third locking portion. The first locking portion is located at a position where the connecting member contacts the pressing member. The second locking portion is located at one end of the connecting member within the shaft hole. The third locking portion is located at a position corresponding to the end of the connecting member away from the handle member and away from the shaft hole, and the first locking portion is located between the second locking portion and the third locking portion.

[0015] In summary, the present application provides a quick-release device and a photographic device. The quick-release device includes a handle member, a mounting seat, and a driving member. The mounting seat is fixedly connected to the handle member and together form a shaft hole for connecting an external connecting member. The mounting seat is provided with a pressing member, and the pressing member can move relative to the mounting seat between a release position and a clamping position. The driving member is movably sleeved outside the mounting seat and the handle member to drive the pressing member to move between the release position and the clamping position. When in the clamping position, the pressing member extends into the shaft hole and presses on the connecting member. When in the release position, the pressing member is away from the connecting member. The present application proposes a novel quick-release device that uses the pressing member to press the connecting member by extrusion to enhance the torque-bearing capacity of the quick-release device, thereby enhancing stability. By moving the driving member, the connecting member can be clamped or released, with simple operation. The extending length of the connecting member can be quickly adjusted, and thus the shooting angle required by the photographic device can be quickly adjusted, bringing a good product experience to users. Description of the Drawings

[0016] Figure 1 is a three-dimensional schematic diagram of the photographic device of the present application.

[0017] Figure 2 is Figure 1 a cross-sectional view of the photographic device in FIG.

[0018] Figure 3 is Figure 1 an exploded schematic diagram of the photographic device in FIG.

[0019] Figure 4 is a three-dimensional schematic diagram of the quick-release device of the present application.

[0020] Figure 5 For Figure 4 the exploded view of the mounting base and the pressing member in Detailed implementation manners

[0021] Before describing the embodiments in detail, it should be understood that the present application is not limited to the detailed structures or element arrangements described in the following text or drawings of the present application. The present application can be implemented in other ways. Moreover, it should be understood that the terms and phrases used herein are only for descriptive purposes and should not be construed restrictively. The terms "including", "comprising", "having" and the like used herein are intended to include the matters listed thereafter, their equivalents and other additional matters. In particular, when describing "a certain element", the present application does not limit the number of such elements to one, and multiple elements can also be included.

[0022] Please refer to Figures 1 to 3 shown. The present application provides a photographic device 10, which includes a connecting member and a quick-release device 11. The connecting member includes a photographic body, a pan-tilt head and a stud 18. The photographic body is, for example, a camera, and the camera is mounted on the pan-tilt head. The top end of the stud 18 is connected to the pan-tilt head. The pan-tilt head is, for example, a tripod. The camera can quickly adjust the shooting angle required through the quick-release device 11. The quick-release device 11 can be adapted to pan-tilt heads of different sizes, so that users can connect different pan-tilt heads.

[0023] Please refer to Figures 4 to 5 shown. The quick-release device 11 includes a handle member 12, a mounting base 14 and a driving member 16. The quick-release device 11 is integrally in a cylindrical structure. For example, the handle member 12, the mounting base 14 and the driving member 16 are all in a cylindrical structure. Among them, the bottom end of the mounting base 14 is fixedly connected to the top end of the handle member 12 and jointly forms a shaft hole 20. The shaft hole 20 is used to connect an external connecting member, that is, the shaft hole 20 is used to connect the external stud 18. The handle member 12 is for the user to hold. The stud 18 can be movably inserted into the shaft hole 20 from above the mounting base 14. The mounting base 14 is provided with a pressing member 22, and the pressing member 22 can move relative to the mounting base 14 between a release position and a pressing position. The driving member 16 is movably sleeved outside the mounting base 14 and the handle member 12 to drive the pressing member 22 to move between the release position and the pressing position. When in the pressing position, the pressing member 22 extends into the shaft hole 20 and presses on the stud 18. When in the release position, the pressing member 22 is away from the stud 18. The present application provides a novel quick-release device 11, which uses the pressing member 22 to press the stud 18 by means of extrusion fastening, enhances the torque bearing capacity of the quick-release device 11, and further enhances the stability. By moving the driving member 16 up and down, the stud 18 can be pressed or released, the operation is simple, the extended length of the stud 18 can be quickly adjusted, and thus the shooting angle required by the photographic device can be quickly adjusted, bringing a good product experience to users.

[0024] In this embodiment, the quick-release device 11 has an axial direction a, the shaft hole 20 is arranged parallel to the axial direction a, and the movement path of the pressing member 22 between the release position and the pressing position is perpendicular to the shaft hole 20 or the axial direction a, that is, the pressing member 22 can move along the radial direction of the mounting base 14. For example, the pressing position is located radially inside the release position.

[0025] In this application, by means of extrusion and pressing, using the principle of the convex position pressing against and pressing against the hole wall, it can be ensured that the stud 18 and the connecting member are completely locked and the perpendicularity is maintained. Specifically, the cross-sectional dimension of the shaft hole 20 is larger than the cross-sectional dimension of the stud 18, that is, the aperture of the shaft hole 20 is larger than the diameter of the stud 18, so that the stud 18 can move up and down along the shaft hole 20 when it is not pressed and fixed, so as to adjust the length of the stud 18 extending outside the shaft hole 20. When the pressing member 22 presses the stud 18, since the pressing position is at the position near the bottom end of the middle of the stud 18, the stud 18 will be slightly inclined and the upper and lower ends of the stud 18 respectively abut against the shaft hole 20 for locking.

[0026] Specifically, the stud 18 includes a first locking part 18a, a second locking part 18b, and a third locking part 18c. The first locking part 18a is located at the position where the stud 18 contacts and presses against the pressing member 22. The second locking part 18b is located at one end of the stud 18 inside the shaft hole 20, that is, the bottom end of the stud 18. The third locking part 18c is located at the position corresponding to the end of the stud 18 away from the handle member 12 of the shaft hole 20, that is, the position corresponding to the top opening of the shaft hole 20 of the stud 18, and the first locking part 18a is located between the second locking part 18b and the third locking part 18c, so as to realize the three-point locking of the stud 18 and the connecting member by using the pressing member 22 and the shaft hole 20, with good stability and the stud 18 can maintain a vertical state.

[0027] In the illustrated embodiment, the quick-release device 11 includes two pressing members 22. The two pressing members 22 are movably arranged on the radially opposite sides of the mounting base 14. The driving member 16 can selectively drive one of the two pressing members 22 to press the stud 18. Among them, the two pressing members 22 can be the same or different. For example, it can be set that the pressing part of one pressing member 22 is an M10 stud type structure, and the pressing part of the other pressing member 22 is a 3 / 8 stud type structure, so that the quick-release device 11 can be compatible with the common M10 and 3 / 8 stud structures on the market, increasing the usage scenarios of the product, and the structure is simple, stable and reliable; or, the pressing parts of the two pressing members 22 are both set as an M10 stud type structure or a 3 / 8 stud type structure. In other embodiments, the pressing part of the pressing member 22 can also adopt other pressing structures, and this application does not limit this.

[0028] More specifically, the driving member 16 includes a sleeve 24 and a driving block 26. The sleeve 24 is movably sleeved outside the mounting base 14 and the handle member 12. The driving block 26 is fixedly arranged on the inner wall of the sleeve 24, and the driving block 26 is located between the sleeve 24 and the mounting base 14 for driving cooperation with the pressing member 22. The driving block 26 is fixed on the sleeve 24, for example, by being fixed with a screw 27. In the illustrated embodiment, the mounting base 14 includes a base body 28 and a first connecting portion 30 and a second connecting portion 32 provided at both ends of the base body 28. The second connecting portion 32 is fixedly connected to the handle member 12. For example, the second connecting portion 32 is threadedly connected and fixed to the handle member 12 for easy disassembly and maintenance. The shaft hole 20 penetrates through the first connecting portion 30, the base body 28, the second connecting portion 32 and the handle member 12. The base body 28 is provided with movable positions 34 communicating with the shaft hole 20 on opposite sides in the radial direction. The movable positions 34 are, for example, groove structures formed on the outer side wall of the base body 28. An interval portion 36 is formed between the two movable positions 34. A communication hole 38 is provided at the middle position of the interval portion 36 corresponding to the position of the shaft hole 20. The communication hole 38 penetrates through the shaft hole 20 and communicates between the two movable positions 34. The pressing member 22 is movably arranged in the movable position 34. For example, the pressing member 22 moves left and right in the radial direction.

[0029] In the illustrated embodiment, the pressing member 22 includes a base portion 40 and driving portions 42 and pressing portions 44 provided on opposite sides of the base portion 40. The pressing portion 44 is located on one side of the base portion 40 close to the shaft hole 20, and the driving portion 42 is located on one side of the base portion 40 away from the shaft hole 20. The driving portion 42 is in driving cooperation with the driving block 26. The pressing portion 44 has a pressing surface 46 adapted to the outer wall shape of the stud 18. The pressing surface 46 is used to press against the side portion of the stud 18 to lock the stud 18. Preferably, the pressing surface 46 is a butting arc surface, and screw teeth are formed on the butting arc surface to increase the frictional resistance between the pressing member 22 and the stud 18, thereby enhancing the pressing locking force. The radian of the butting arc surfaces of the two pressing members 22 is different. In this embodiment, the butting arc surface of one of the pressing members 22 has the inner wall characteristics of the screw hole of the M10 stud type, that is, the semi-hole structure surrounded by the butting arc surface is a straight hole structure with the same diameter; the butting arc surface of the other pressing member 22 has the inner wall characteristics of the screw hole of the 3 / 8 stud type, that is, the semi-hole structure surrounded by the butting arc surface is a tapered hole structure with a diameter gradually decreasing from one end to the other end. When the pressing member 22 is in the pressing position, the pressing portion 44 extends into the communication hole 38 and the shaft hole 20 to press against the outer wall of the stud 18. It can be seen from this that the quick-release device of this embodiment can be compatible with M10 studs and 3 / 8 studs. In other embodiments, it may also be that the quick-release device includes three of the pressing members, and the stud sizes matched by the three pressing members are different. It may also be that the quick-release device includes five of the pressing members, and the stud sizes matched by the five pressing members are different, so that the quick-release device has stronger general performance.

[0030] The movement of the driving member 16 includes moving up and down between a first position and a second position along the axial direction a and rotating between a first rotational position and a second rotational position about the axis of the shaft hole 20. When the driving member 16 is in the first position, the driving block 26 is axially away from the driving portion 42. For example, the driving block 26 is located below the driving portion 42. At this time, the pressing member 22 is in the released position, and the sleeve 24 covers a part of the mounting seat 14 and a part of the handle member 12. When the driving member 16 is in the second position, the driving block 26 drives the pressing member 22 to move from the released position to the clamping position by driving the driving portion 42, and the driving block 26 is clamped and fixed between the pressing member 22 and the sleeve 24, that is, the driving member 16 is integrally fixed. At this time, the pressing member 22 is in the clamping position, and the sleeve 24 covers the entire mounting seat 14 and a part of the handle member 12.

[0031] Further, the pressing member 22 has a mating inclined surface 48, and the driving block 26 has a driving inclined surface 50. The mating inclined surface 48 is, for example, provided on the side wall of the driving portion 42 facing the driving member 16 and located at the bottom side, and the driving inclined surface 50 is, for example, provided on the side wall of the driving block 26 facing the mounting seat 14 and located at the top side, and the mating inclined surface 48 faces the driving inclined surface 50 when the driving member 16 is in the first position. When the driving block 26 moves upward, the mating inclined surface 48 is squeezed by the driving inclined surface 50, so that the pressing member 22 moves from the released position to the clamping position in the radially inward direction. At the clamping position, the side wall plane of the driving block 26 abuts against the side wall plane of the driving portion 42.

[0032] Preferably, a first elastic member 52 is provided between the sleeve 24 and the handle member 12. The first elastic member 52 applies an elastic biasing force to the sleeve 24 to move it toward the first position, so that when the driving member 16 is unlocked from the second position, the driving member 16 can automatically return to the first position under the elastic force of the first elastic member 52 and stably remain in the first position. Specifically, a movable groove 54 is provided on the outer wall of the end of the handle member 12 connected to the mounting seat 14, and an inner extension portion 56 is provided on the inner wall of the sleeve 24. The inner extension portion 56 is located in the movable groove 54 and can move up and down or rotate in the movable groove 54. The first elastic member 52 is, for example, a spring. The first elastic member 52 is located in the movable groove 54 and one end abuts against the bottom wall of the inner extension portion 56 and the other end abuts against the step of the movable groove 54.

[0033] When the driving member 16 is in the first rotation position, the driving block 26 is correspondingly located on the side where one of the two pressing members 22 is located. At this time, when the driving block 26 moves upward to the second position, it can drive the pressing member 22 from the release position to the clamping position; when the driving member 16 is in the second rotation position, the driving block 26 is correspondingly located on the side where the other of the two pressing members 22 is located. At this time, when the driving block 26 moves upward to the second position, it can drive the pressing member 22 from the release position to the clamping position. The driving block 26 can rotate between the first rotation position and the second rotation position, and the rotation path is, for example, a semi-circular arc. Specifically, a rotation space 58 and a stop portion 60 are formed in a portion of the side wall of the seat body 28 between the movable position 34 and the second connecting portion 32. The rotation space 58 and the stop portion 60 are both, for example, semi-circular arcs. The driving block 26 is rotatably disposed in the rotation space 58. The first rotation position and the second rotation position are respectively located at both ends of the rotation space 58 in the circumferential direction. The stop portion 60 is located at one end of the rotation space 58 away from the second connecting portion 32 and is used to stop the driving block 26. And communication ports 62 communicating with the movable position 34 are respectively provided at both ends of the rotation space 58 in the circumferential direction corresponding to the two driving portions 42, that is, the communication ports 62 penetrate through the stop portion 60. The communication ports 62 are located between the first position and the second position, and the driving block 26 passes through the communication ports 62 when moving upward. When the pressing member 22 is in the release position, the driving portion 42 is correspondingly located above the communication port 62. After the driving block 26 moves upward through the communication port 62, the driving inclined surface 50 abuts and cooperates with the inclined surface 48 to start driving the driving portion 42, so that the pressing member 22 moves from the release position to the clamping position.

[0034] Preferably, a second elastic member 64 is provided between the two base portions 40. The second elastic member 64 is, for example, a spring, and the second elastic member 64 applies an elastic biasing force to the two pressing members 22 to make them move away from each other. Specifically, two second elastic members 64 are provided. Through holes 66 are respectively provided on both sides of the communication hole 38 of the spacer portion 36. The two second elastic members 64 are respectively inserted through the corresponding two through holes 66, and one end of the second elastic member 64 abuts against one of the base portions 40 and the other end abuts against the other base portion 40. Optionally, grooves 68 are provided on the base portion 40 corresponding to the second elastic member 64, and the end portions of the second elastic member 64 are located in the grooves 68, which can play a limiting role. When the driving block 26 moves from the second position to the first position, the extrusion effect on the pressing member 22 is released. The two pressing members 22 can automatically reset from the clamping position to the release position under the elastic force of the second elastic member 64 and stably remain in the release position.

[0035] It should be noted that the driving block 26 is in the first position when selecting the pressing member 22, that is, the driving block 26 first rotates to the corresponding first rotation position or second rotation position at the first position, and then moves from the first position to the second position after selecting the rotation position.

[0036] Preferably, first identification marks 70 and second identification marks 72 are respectively provided on the radially opposite sides of the handle member 12 and the radially opposite sides of the mounting base 14. The two first identification marks 70 are correspondingly located on the side where one of the pressing members 22 is located, and the two second identification marks 70 are correspondingly located on the side where the other pressing member 22 is located, so as to facilitate the driving member 16 to accurately distinguish the positions of the two pressing members 22 during rotation. The first identification marks 70 and the second identification marks 72 are, for example, groove structures. The identification marks on the handle member 12 are, for example, provided at the position on its side wall at the bottom of the driving member 16, and the identification marks on the mounting base 14 are, for example, provided on the top side wall of the seat body 28.

[0037] In summary, the present application provides a quick-release device and a photographic device. The quick-release device includes a handle member, a mounting base, and a driving member. The mounting base is fixedly connected to the handle member and together form a shaft hole for connecting an external connecting member. The mounting base is provided with a pressing member, and the pressing member can move relative to the mounting base between a release position and a clamping position. The driving member is movably sleeved outside the mounting base and the handle member to drive the pressing member to move between the release position and the clamping position. When in the clamping position, the pressing member extends into the shaft hole and presses on the connecting member, and when in the release position, the pressing member is away from the connecting member. The present application proposes a novel quick-release device. By using the pressing member to press the connecting member in a squeezing and fastening manner, the torque-bearing capacity of the quick-release device is enhanced, and thus the stability is enhanced. By moving the driving member, the connecting member can be clamped or released, and the operation is simple. The extending length of the connecting member can be quickly adjusted, and thus the shooting angle required for the photographic device can be quickly adjusted, bringing a good product experience to the user.

[0038] The concepts described herein can be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of the present application is determined by the appended claims rather than by the foregoing description. Any changes within the literal meaning and equivalent scope of the claims shall fall within the scope of these claims.

Claims

1. A quick release device, characterized in that: It includes a handle member, a mounting seat and a driving member, the mounting seat is fixedly connected to the handle member and together form an axial hole, the axial hole is used to connect an external connecting member, the mounting seat is provided with a holding member, and the holding member can move between a loose position and a clamping position relative to the mounting seat, the driving member can be movably mounted outside the mounting seat and the handle member to drive the holding member to move between the loose position and the clamping position, when in the clamping position, the holding member extends into the axial hole and presses on the connecting member, and when in the loose position, the holding member is away from the connecting member.

2. The quick release device according to claim 1, characterized in that: The cross-sectional dimension of the shaft hole is larger than the cross-sectional dimension of the connecting piece. When the pressing piece presses the connecting piece, the connecting piece tilts and abuts against the shaft hole to be locked.

3. The quick release device according to claim 1, characterized in that: The driving member includes a sleeve and a driving block. The sleeve can be movably mounted outside the mounting seat and the handle member. The driving block is fixedly arranged on the inner wall of the sleeve and the driving block is located between the sleeve and the mounting seat. The driving block is used to cooperate with the pressing member in driving.

4. The quick release device according to claim 3, characterized in that: The driving member can move between a first position and a second position along the axial direction of the axial hole. In the first position, the driving block is away from the pressing member, and the pressing member is located in the released position. In the second position, the driving block drives the pressing member to move from the released position to the clamped position, and the driving block is clamped and fixed between the pressing member and the sleeve.

5. The quick release device according to claim 4, characterized in that: The holding member has a mating inclined surface, the driving block has a driving inclined surface, and the driving inclined surface is drivingly matched with the mating inclined surface; and / or, a first elastic member is provided between the sleeve and the handle member, and the first elastic member applies an elastic bias to the sleeve to move it toward the first position.

6. The quick release device according to any one of claims 1 to 5, characterized in that: The quick release device comprises two pressing members, which are arranged on opposite sides of the shaft hole, and the driving member can selectively drive one of the two pressing members to press the connecting member.

7. The quick release device according to claim 6, characterized in that: The driving member can rotate between a first rotation position and a second rotation position with the axial direction of the axial hole as the axis. In the first rotation position, the driving block of the driving member is located on the side of one of the two holding members, and in the second rotation position, the driving block is located on the side of the other of the two holding members.

8. The quick release device according to claim 7, characterized in that: The mounting seat comprises a seat body and a first connecting portion and a second connecting portion provided at two ends of the seat body, the second connecting portion being connected to the handle member, the axial hole passing through the first connecting portion, the seat body and the second connecting portion, movable positions communicating with the axial hole being provided on opposite sides of the seat body, and the holding member being movably provided at the movable positions; and / or The holding member includes a base portion and a driving portion and a holding portion arranged on opposite sides of the base portion. The driving portion cooperates with the driving member. The holding portion has a holding surface adapted to the shape of the connecting member, and the holding surface is used to press the side of the connecting member.

9. The quick release device according to claim 8, characterized in that: The pressing surface is a contact arc surface, and a screw thread is formed on the contact arc surface. The curvatures of the contact arc surfaces of the two pressing members are different.

10. The quick release device according to claim 8, characterized in that: A second elastic member is provided between the two base parts, and the second elastic member applies an elastic bias to the two holding parts so that the two parts are moved away from each other; and / or, a portion of the side wall of the seat body located between the active position and the second connecting part forms a rotation space and a stopping part, and the driving block is rotatably arranged in the rotation space, and the stopping part is located on a side of the rotation space away from the second connecting part and is used to stop the driving block, and connecting ports connected to the active position are respectively provided at two ends of the rotation space corresponding to the two driving parts.

11. A photographic device, characterized in that: It includes a connecting piece and a quick-release device as described in any one of claims 1 to 10, wherein the connecting piece includes a first locking portion, a second locking portion and a third locking portion, the first locking portion is located at a position where the connecting piece contacts the holding piece, the second locking portion is located at an end of the connecting piece located in the axial hole, the third locking portion is located at a position corresponding to an end of the connecting piece and the axial hole away from the handle piece, and the first locking portion is located between the second locking portion and the third locking portion.

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