Quick release apparatus and projection device

Abstract

A quick release apparatus (11) and a projection device (10). The quick release apparatus (11) comprises a handle member (12), a mounting base (14) and a driving member (16); the mounting base (14) and the handle member (12) are fixedly connected and jointly provided with a shaft hole (20); the shaft hole (20) is configured to be connected to an external connecting member; the mounting base (14) is provided with a pressing member (22), and the pressing member (22) can move between a release position and a pressing position relative to the mounting base (14); the driving member (16) is movably sleeved outside the mounting base (14) and the handle member (12) so as to drive the pressing member (22) to move between the release position and the pressing position; in the pressing position, the pressing member (22) extends into the shaft hole (20) and is pressed against the connecting member; and in the release position, the pressing member (22) is away from the connecting member. In the apparatus, the connecting member can be pressed or released by means of the movement of the driving member, and the operation is simple and convenient.

Description

Quick release device and photographic equipment TECHNICAL FIELD

[0001] The present application relates to the technical field of photographic equipment, and in particular to a quick release device and photographic equipment. BACKGROUND

[0002] With the continuous development of film and television technology, various photographic auxiliary equipment is more and more widely used. For example, the base quick release handle is mainly applied to the tripod, which can quickly adjust the shooting angle of the camera and has the function of quick disengagement. The existing base quick release handle fixes the screw shaft through a worm gear. Specifically, the worm gear is arranged on one side of the screw shaft, the worm gear is provided with a gear outside, the gear is engaged with the external tooth of the screw shaft, the screw shaft moves up and down when the worm gear rotates, so as to realize the adjustment of the extension length of the screw shaft, and the screw shaft is relatively fixed when the worm gear does not rotate. However, there are still some problems in the self-locking of the worm gear. Since the gear is small, the tooth slipping phenomenon will occur when the torque is slightly large, the stability is poor, and the worm gear will be pressed against the middle part of the inserted screw shaft to ensure the engagement degree, but the upper and lower ends of the screw shaft are not fixed, the screw shaft may slightly shake, which will also cause scratches on the inner wall of the shaft tube where the screw shaft is inserted, and dust enters. In addition, the structure of the quick release handle is difficult to improve, and the upgrade has limitations. SUMMARY

[0003] Therefore, the present application provides a quick release device and photographic equipment which can effectively solve the above problems.

[0004] The present application provides a quick release device, which comprises a handle piece, a mounting seat and a driving piece. The mounting seat is fixedly connected with the handle piece and is jointly formed with a shaft hole. The shaft hole is used for connecting an external connecting piece. The mounting seat is provided with a pressing piece, and the pressing piece can move relative to the mounting seat between a loosening position and a pressing position. The driving piece is movably sleeved outside the mounting seat and the handle piece, and is used for driving the pressing piece to move between the loosening position and the pressing position. When in the pressing position, the pressing piece extends into the shaft hole and is pressed on the connecting piece. When in the loosening position, the pressing piece is away from the connecting piece.

[0005] In an embodiment, the cross-sectional dimension of the shaft hole is greater than the cross-sectional dimension of the connecting piece. When the pressing piece presses the connecting piece, the connecting piece is inclined and locked against the hole wall of the shaft hole.

[0006] In an embodiment, the driving member comprises a sleeve and a driving block, the sleeve movably sleeving the mounting base and the handle member, the driving block fixedly arranged on the inner wall of the sleeve and located between the sleeve and the mounting base, and the driving block being used to drive the pressing member.

[0007] In an embodiment, the driving member is movable along the axial direction of the shaft hole between a first position and a second position, the driving block being away from the pressing member at the first position, the pressing member being located at the loosening position, the driving block driving the pressing member to move from the loosening position to the pressing position at the second position, and the driving block clamping and fixing between the pressing member and the sleeve.

[0008] In an embodiment, the pressing member has a matching inclined surface, and the driving block has a driving inclined surface, the driving inclined surface being in driving cooperation with the matching inclined surface.

[0009] In an embodiment, a first elastic member is arranged between the sleeve and the handle member, the first elastic member elastically biasing the sleeve to move towards the first position.

[0010] In an embodiment, an outer wall of the end of the handle member connected with the mounting base is provided with a movable slot, an inner extension is arranged on the inner wall of the sleeve, the inner extension movably arranged in the movable slot, one end of the first elastic member fixedly connected with the inner extension and the other end fixedly connected with the slot wall of the movable slot.

[0011] In an embodiment, the quick release device comprises two pressing members, the two pressing members arranged on opposite sides of the shaft hole, and the driving member selectively driving one of the two pressing members to press the connecting member.

[0012] In an embodiment, the driving member is rotatable between a first rotation position and a second rotation position along the axial direction of the shaft hole, the driving block of the driving member corresponding to the side where one of the two pressing members is located at the first rotation position, and the driving block corresponding to the side where the other of the two pressing members is located at the second rotation position.

[0013] In an embodiment, the mounting base comprises a base body and a first connecting portion and a second connecting portion arranged at two ends of the base body, the second connecting portion being connected with the handle member, the shaft hole penetrating through the first connecting portion, the base body and the second connecting portion, and the base body being provided with movable positions in communication with the shaft hole at opposite sides thereof, and the pressing member movably arranged in the movable position.

[0014] In an embodiment, the pressing member comprises a base portion, a driving portion arranged on opposite sides of the base portion, and a pressing portion, the driving portion is matched with the driving member, the pressing portion has a pressing surface matched with the shape of the connecting member, and the pressing surface is used to press the side of the connecting member.

[0015] In an embodiment, the pressing surface is an abutting arc surface, the abutting arc surface is formed with a screw thread, and the radii of the abutting arc surfaces of the two pressing members are different.

[0016] In an embodiment, the pressing portion is arranged on one side of the base portion close to the shaft hole, and the driving portion is arranged on the other side of the base portion away from the shaft hole.

[0017] In an embodiment, a spacing portion is formed between the two movable positions, the spacing portion is provided with a communication hole corresponding to the position of the shaft hole, and the communication hole is used for the pressing portion to extend into.

[0018] In an embodiment, a second elastic member is arranged between the two base portions, and the second elastic member applies an elastic bias to the two pressing members to make them move away from each other.

[0019] In an embodiment, the spacing portion is provided with a through hole, the second elastic member is arranged in the through hole, and the two ends of the second elastic member abut against the two base portions respectively.

[0020] In an embodiment, the base portion is provided with a groove, and the end of the second elastic member is located in the groove.

[0021] In an embodiment, the part of the side wall of the seat body between the movable position and the second connecting portion is formed with a rotating space and a stop portion, the driving block is rotatably arranged in the rotating space, the stop portion is located on the side of the rotating space away from the second connecting portion and is used to stop the driving block, and the two ends of the rotating space are respectively provided with a communication port communicated with the movable position.

[0022] In an embodiment, opposite sides of the handle member and opposite sides of the mounting seat are respectively provided with a first identification mark and a second identification mark, the two first identification marks are located on the side of one of the pressing members, and the two second identification marks are located on the side of the other pressing member.

[0023] The application further provides a photographic equipment comprising the quick release device and a connecting member, the connecting member comprising a first locking part, a second locking part and a third locking part, the first locking part being located at a position where the connecting member contacts the pressing member, the second locking part being located at one end of the connecting member in the shaft hole, the third locking part being located at a position corresponding to an end of the shaft hole away from the handle member, and the first locking part being located between the second locking part and the third locking part.

[0024] In summary, the application provides a quick release device and a photographic equipment, the quick release device comprising a handle member, a mounting seat and a driving member, the mounting seat being fixedly connected with the handle member and jointly forming a shaft hole for connecting an external connecting member, the mounting seat being provided with a pressing member, the pressing member being movable relative to the mounting seat between a loosening position and a pressing position, the driving member being movably sleeved outside the mounting seat and the handle member for driving the pressing member to move between the loosening position and the pressing position, the pressing member extending into the shaft hole and pressing on the connecting member in the pressing position, and the pressing member being away from the connecting member in the loosening position. The application provides a novel quick release device, the pressing member is used to press the connecting member by extrusion fastening, the torsion bearing capacity of the quick release device is enhanced, and the stability is further enhanced, the connecting member can be pressed or loosened by moving the driving member, the operation is simple, the extension length of the connecting member can be quickly adjusted, the shooting angle of the photographic equipment can be quickly adjusted, and good product experience is brought to the user. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a perspective view of the photographic equipment of the application.

[0026] Fig. 2 is a sectional view of the photographic equipment in Fig. 1 at an angle.

[0027] Fig. 3 is an exploded view of the photographic equipment in Fig. 1.

[0028] Fig. 4 is a perspective view of the quick release device of the application.

[0029] Fig. 5 is an exploded view of the mounting seat and the pressing member in Fig. 4. DETAILED DESCRIPTION

[0030] Before the embodiments are described in detail, it should be understood that the application is not limited to the detailed structure or element arrangement described in the following or in the accompanying drawings. The application can be implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are only used for description purposes and should not be interpreted as limiting. The wording and terminology used herein, such as “comprise”, “contain”, “have” and the like, means to include the listed items, their equivalents and other additional items. In particular, when describing “one certain element”, the application does not limit the number of the element to one, but can also include multiple.

[0031] Please refer to FIG. 1 to FIG. 3, the application provides a photographic equipment 10, the photographic equipment 10 includes a connecting piece and a quick release device 11, wherein the connecting piece includes a photographic main body, a gimbal and a stud 18, the photographic main body is for example a camera, the camera is installed on the gimbal, the top end of the stud 18 is connected to the gimbal, the gimbal is for example a tripod, the camera can be quickly adjusted to the required angle of shooting through the quick release device 11. The quick release device 11 can be adapted to different sizes of gimbals, so that users can connect different gimbals.

[0032] Please refer to FIG. 4 to FIG. 5, the quick release device 11 includes a handle piece 12, a mounting seat 14 and a driving piece 16, the quick release device 11 is in a cylindrical structure as a whole, for example, the handle piece 12, the mounting seat 14 and the driving piece 16 are all in a cylindrical structure.

[0033] The bottom end of the mounting seat 14 is fixedly connected with the top end of the handle piece 12 and is jointly formed with a shaft hole 20, the shaft hole 20 is used for connecting an external connecting piece, that is, the shaft hole 20 is used for connecting an external stud 18. The handle piece 12 is used for being held by a user, and the stud 18 is movably inserted into the shaft hole 20 from above the mounting seat 14. The mounting seat 14 is provided with a pressing piece 22, and the pressing piece 22 is movable relative to the mounting seat 14 between a loosening position and a pressing position. The driving piece 16 is movably sleeved outside the mounting seat 14 and the handle piece 12, so as to drive the pressing piece 22 to move between the loosening position and the pressing position. When the pressing piece 22 is in the pressing position, the pressing piece 22 extends into the shaft hole 20 and presses on the stud 18; when the pressing piece 22 is in the loosening position, the pressing piece 22 is away from the stud 18.

[0034] The application provides a novel quick release device 11, which uses the pressing piece 22 to press the stud 18 by extrusion fastening, enhances the torsional strength of the quick release device 11, and further enhances the stability. The stud 18 can be pressed or loosened by the up-down movement of the driving piece 16, the operation is simple, the extension length of the stud 18 can be quickly adjusted, the required angle of shooting of the photographic equipment can be quickly adjusted, and good product experience is brought to the user.

[0035] In this embodiment, the quick release device 11 has an axial direction a, and the shaft hole 20 is arranged parallel to the axial direction a. The movement path of the pressing piece 22 between the loosening position and the pressing position is arranged perpendicular to the shaft hole 20 or the axial direction a, that is, the pressing piece 22 can move along the radial direction of the mounting seat 14, for example, the pressing position is located on the radial inner side of the loosening position.

[0036] The application can ensure that the stud 18 and the connecting piece are completely locked and the perpendicularity is maintained by using the principle of convex position pressing and pressing the hole wall in the way of extrusion pressing. Specifically, the cross-sectional size of the shaft hole 20 is larger than the cross-sectional size of the stud 18, that is, the hole diameter 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 to adjust the length of the stud 18 extending out of the shaft hole 20. When the pressing piece 22 presses the stud 18, the stud 18 will be slightly inclined and the upper and lower ends of the stud 18 will be locked against the hole wall of the shaft hole 20 respectively because the pressing position is at the middle bottom end position of the stud 18.

[0037] Specifically, the stud 18 includes a first locking position 18a, a second locking position 18b and a third locking position 18c. The first locking position 18a is located at the position where the stud 18 is in contact with the pressing piece 22, the second locking position 18b is located at one end of the stud 18 in the shaft hole 20, that is, the bottom end of the stud 18, and the third locking position 18c is located at the position corresponding to the end of the stud 18 away from the handle piece 12, that is, the position corresponding to the top opening of the stud 18 in the shaft hole 20, and the first locking position 18a is located between the second locking position 18b and the third locking position 18c, so that the three-point locking of the stud 18 and the connecting piece is realized by the pressing piece 22 and the shaft hole 20, which is stable and the stud 18 can maintain a vertical state. c The first locking position 18a is located between the second locking position 18b and the third locking position 18c, so that the three-point locking of the stud 18 and the connecting piece is realized by the pressing piece 22 and the shaft hole 20, which is stable and the stud 18 can maintain a vertical state.

[0038] In the embodiment shown, the quick release device 11 includes two pressing pieces 22, which are movably arranged on the diametrically opposite sides of the mounting seat 14, and the driving piece 16 selectively drives one of the two pressing pieces 22 to press the stud 18. The two pressing pieces 22 can be the same or different. For example, one of the pressing pieces 22 can be provided with an M10 stud type structure, and the other pressing piece 22 can be provided with a 3 / 8 stud type structure, so that the quick release device 11 can be compatible with the commonly used M10 and 3 / 8 stud structures on the market, increase the use scenarios of the product, and have a simple, stable and reliable structure. Alternatively, the pressing portions of the two pressing pieces 22 can be provided with M10 stud type structures or 3 / 8 stud type structures. In other embodiments, the pressing portions of the pressing pieces 22 can also adopt other pressing structures, which are not limited in the application.

[0039] More specifically, the driving piece 16 includes a sleeve 24 and a driving block 26. The sleeve 24 is movably sleeved outside the mounting seat 14 and the handle piece 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 seat 14 for driving cooperation with the pressing piece 22. The driving block 26 is fixed on the sleeve 24 by, for example, screwing 27.

[0040] In the shown embodiment, the mounting seat 14 comprises a seat body 28 and a first connecting portion 30 and a second connecting portion 32 arranged at two ends of the seat body 28. The second connecting portion 32 is fixedly connected with the handle piece 12, for example, the second connecting portion 32 is fixedly connected with the handle piece 12 in a threaded manner, so as to facilitate disassembly and maintenance. The shaft hole 20 is arranged through the first connecting portion 30, the seat body 28, the second connecting portion 32 and the handle piece 12, and the seat body 28 is provided with two movable positions 34 in communication with the shaft hole 20 on opposite sides in the radial direction. The two movable positions 34 form a spacing portion 36 therebetween, and a communication hole 38 is arranged in the middle portion of the spacing portion 36 corresponding to the position of the shaft hole 20. The communication hole 38 penetrates the shaft hole 20 and is in communication between the two movable positions 34, and is used for the pressing portion 44 of the pressing piece 22 to extend into the communication hole 38 to press the threaded stud 18. The pressing piece 22 is movably arranged in the movable position 34, for example, the pressing piece 22 moves left and right in the radial direction.

[0041] In the shown embodiment, the pressing piece 22 comprises a base portion 40 and a driving portion 42 and a pressing portion 44 arranged at 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 the other side of the base portion 40 away from the shaft hole 20, and the driving portion 42 is drivingly matched with the driving block 26. The pressing portion 44 has a pressing surface 46 adapted to the shape of the outer wall of the threaded stud 18, and the pressing surface 46 is used to press the side of the threaded stud 18 to lock the threaded stud 18.

[0042] Preferably, the pressing surface 46 is an abutting arc surface, and a screw thread is formed on the abutting arc surface to increase the frictional resistance between the pressing piece 22 and the threaded stud 18, thereby enhancing the pressing locking force. The radii of the abutting arc surfaces of the two pressing pieces 22 are different.

[0043] In the embodiment, the abutting arc surface of one of the pressing pieces 22 has the screw hole inner wall features of the M10 threaded stud structure, that is, the half-hole structure surrounded by the abutting arc surface is a straight hole structure with the same diameter. The abutting arc surface of the other pressing piece 22 has the screw hole inner wall features of the 3 / 8 threaded stud structure, that is, the half-hole structure surrounded by the abutting arc surface is a tapered hole structure with a gradually decreasing diameter from one end to the other end. When the pressing piece 22 is in the pressing position, the pressing portion 44 extends into the communication hole 38 and the shaft hole 20 to press the outer wall of the threaded stud 18. It can be seen that the quick release device of the embodiment can be compatible with M10 threaded studs and 3 / 8 threaded studs.

[0044] In other embodiments, the quick release device can comprise three pressing pieces, and the sizes of the threaded studs matched with the three pressing pieces are different. The quick release device can also comprise five pressing pieces, and the sizes of the threaded studs matched with the five pressing pieces are different, so that the quick release device has stronger universal performance.

[0045] The movement of the driving member 16 includes moving up and down along the axial direction a between the first position and the second position, and rotating around the axial direction of the shaft hole 20 between the first rotation position and the second rotation position. When the driving member 16 is in the first position, the driving block 26 is axially away from the driving part 42, for example, the driving block 26 is below the driving part 42, at this time, the pressing member 22 is in the loosening position, and the sleeve 24 covers part of the mounting seat 14 and 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 loosening position to the pressing position by driving the driving part 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 fixed as a whole, at this time, the pressing member 22 is in the pressing position, and the sleeve 24 covers the entire mounting seat 14 and part of the handle member 12.

[0046] Further, the pressing member 22 has a matching inclined surface 48, and the driving block 26 has a driving inclined surface 50, for example, the matching inclined surface 48 is arranged on the side wall of the driving part 42 towards the driving member 16 and at the bottom side, and the driving inclined surface 50 is arranged on the side wall of the driving block 26 towards the mounting seat 14 and at the top side, and the matching inclined surface 48 is opposite to the driving inclined surface 50 when the driving member 16 is in the first position. When the driving block 26 moves upwards, the matching inclined surface 48 is pressed by the driving inclined surface 50, so that the pressing member 22 moves from the loosening position to the pressing position in the direction of radially inward. When the pressing member 22 is in the pressing position, the side wall plane of the driving block 26 abuts against the side wall plane of the driving part 42.

[0047] Preferably, a first elastic member 52 is arranged between the sleeve 24 and the handle member 12, and the first elastic member 52 elastically biases the sleeve 24 to move towards the first position, so that when the driving member 16 is unlocked from the second position, the driving member 16 can be automatically reset to the first position under the elastic force of the first elastic member 52, and stably kept in the first position.

[0048] Specifically, the outer wall of the end of the handle piece 12 connected with the mounting seat 14 is provided with a movable groove 54, and the inner wall of the sleeve 24 is provided with an inner extension part 56 located below the driving block 26, the inner extension part 56 is movably arranged in the movable groove 54, for example, the inner extension part 56 is located in the movable groove 54 and can move up and down in the axial direction a or rotate about the axial direction a. The first elastic piece 52 is a spring for example, the first elastic piece 52 is located in the movable groove 54, and one end of the first elastic piece 52 is fixedly connected with the inner extension part 56 and the other end is fixedly connected with the groove wall of the movable groove 54, for example, one end of the first elastic piece 52 is fixedly connected with the bottom wall of the inner extension part 56 and the other end is fixedly connected with the step of the movable groove 54, wherein the step is the groove wall part on the side opposite to the inner extension part 56 of the movable groove 54. In the embodiment, the first elastic piece 52 is actually a tension spring, since both ends are fixed, the tension spring continuously applies an elastic biasing force downward to the inner extension part 56 and the driving piece 16, so that the driving piece 16 continuously receives an elastic force for moving towards the first position.

[0049] When the driving piece 16 is in the first rotation position, the driving block 26 is located on the side of one of the two pressing pieces 22, at this time, when the driving block 26 moves up to the second position, the pressing piece 22 can be driven from the loosening position to the pressing position; when the driving piece 16 is in the second rotation position, the driving block 26 is located on the side of the other of the two pressing pieces 22, at this time, when the driving block 26 moves up to the second position, the pressing piece 22 can be driven from the loosening position to the pressing position.

[0050] Correspondingly, the driving block 26 can rotate between the first rotation position and the second rotation position, and the rotation path is a semicircular arc for example. Specifically, the part of the side wall of the seat body 28 located between the movable position 34 and the second connecting part 32 is formed with a rotation space 58 and a stop part 60, the rotation space 58 is a groove structure opened on the side wall of the seat body 28, and the rotation space 58 and the stop part 60 are semicircular arcs along the circumferential direction of the seat body 28 for example. The driving block 26 is rotatably arranged in the rotation space 58, and the first rotation position and the second rotation position are located at the two ends of the rotation space 58 in the circumferential direction.

[0051] The stop part 60 is located at the end of the rotation space 58 away from the second connecting part 32 and is used for stopping the driving block 26, so as to limit the driving block 26. And the two ends of the rotation space 58 in the circumferential direction are respectively provided with a communication port 62 in communication with the movable position 34, that is, the communication port 62 penetrates the stop part 60. The communication port 62 is located between the first position and the second position, and the driving block 26 moves up through the communication port 62. When the pressing piece 22 is in the loosening position, the driving part 42 is located above the communication port 62, and after the driving block 26 moves up through the communication port 62, the driving inclined surface 50 abuts against the matching inclined surface 48 to drive the driving part 42, so that the pressing piece 22 moves from the loosening position to the pressing position.

[0052] Preferably, a second elastic member 64, for example a spring, is arranged between the two base portions 40, and exerts an elastic bias on the two pressing members 22 to make them move away from each other. Specifically, two second elastic members 64 are arranged, and the two second elastic members 64 are arranged in the two through holes 38 respectively on the two sides of the spacing portion 36, and one end of each of the second elastic members 64 abuts against one of the base portions 40, and the other end of each of the second elastic members 64 abuts against the other base portion 40.

[0053] Optionally, a groove 68 is arranged on the base portion 40 corresponding to the second elastic member 64, and the end of the second elastic member 64 is arranged in the groove 68, which can limit the position of the second elastic member 64.

[0054] When the driving block 26 is moved from the second position to the first position, the pressing effect on the pressing members 22 is released, and the two pressing members 22 can be automatically reset from the pressing position to the loosening position under the elastic force of the second elastic member 64, and stably kept in the loosening position.

[0055] It should be noted that the driving block 26 is in the first position when the pressing members 22 are selected, that is, the driving block 26 is first rotated to the corresponding first rotation position or second rotation position in the first position, and then moved from the first position to the second position after the rotation position is selected.

[0056] Preferably, the radially opposite sides of the handle member 12 and the radially opposite sides of the mounting seat 14 are respectively provided with first identification marks 70 and second identification marks 72, and the two first identification marks 70 are arranged on the side where one of the pressing members 22 is located, and the two second identification marks 72 are arranged on the side where the other pressing member 22 is located, so as to accurately distinguish the positions of the two pressing members 22 during the rotation of the driving member 16. The first identification marks 70 and the second identification marks 72 are, for example, groove structures, and the identification marks on the handle member 12 are, for example, arranged on the side wall thereof at the position on the bottom side of the driving member 16, and the identification marks on the mounting seat 14 are, for example, arranged on the top side wall of the seat body 28.

[0057] In summary, the application provides a quick release device and a photographic equipment. The quick release device comprises a handle piece, a mounting seat and a driving piece. The mounting seat is fixedly connected with the handle piece and is jointly provided with a shaft hole. The shaft hole is used for connecting an external connecting piece. The mounting seat is provided with a pressing piece. The pressing piece is movable relative to the mounting seat between a loosening position and a pressing position. The driving piece is movably sleeved outside the mounting seat and the handle piece, and is used for driving the pressing piece to move between the loosening position and the pressing position. When the pressing piece is in the pressing position, the pressing piece extends into the shaft hole and is pressed on the connecting piece. When the pressing piece is in the loosening position, the pressing piece is away from the connecting piece. The application provides a novel quick release device. The pressing piece is used for pressing the connecting piece through extrusion fastening, so as to enhance the torsion bearing capacity of the quick release device, and then to enhance the stability. The connecting piece can be pressed or loosened through the movement of the driving piece, so that the operation is simple. The extension length of the connecting piece can be quickly adjusted, and then the shooting angle of the photographic equipment can be quickly adjusted, so as to bring good product experience to the user.

[0058] The concepts described herein can be embodied in various forms without departing from the spirit and nature of the disclosure. The disclosed specific embodiments should be considered as illustrative rather than limiting. Therefore, the scope of the application is determined by the appended claims rather than the foregoing description. Any changes within the literal meaning and equivalent scope of the claims should be considered as falling within the scope of the claims.

Claims

1. A quick release device, characterized by, The quick release device comprises a handle piece, a mounting base and a driving piece. The mounting base is fixedly connected with the handle piece and is provided with a shaft hole for connecting an external connecting piece. The mounting base is provided with a pressing piece which is movable relative to the mounting base between a loosening position and a pressing position. The driving piece is movably sleeved outside the mounting base and the handle piece for driving the pressing piece to move between the loosening position and the pressing position. In the pressing position, the pressing piece extends into the shaft hole and presses the connecting piece. In the loosening position, the pressing piece is away from the connecting piece.

2. The quick release device of claim 1, wherein, The shaft hole has a cross-sectional dimension greater than that of the connecting piece. When the pressing piece presses the connecting piece, the connecting piece is tilted and locked against the hole wall of the shaft hole.

3. The quick release device of claim 1, wherein the first and second fasteners are each a screw. The driving piece comprises a sleeve and a driving block. The sleeve is movably sleeved outside the mounting base and the handle piece. The driving block is fixedly arranged on the inner wall of the sleeve and located between the sleeve and the mounting base. The driving block is used for driving cooperation with the pressing piece.

4. The quick release device of claim 3, wherein the first and second fasteners are each a screw. The driving piece is movable along the axial direction of the shaft hole between a first position and a second position. In the first position, the driving block is away from the pressing piece and the pressing piece is in the loosening position. In the second position, the driving block drives the pressing piece to move from the loosening position to the pressing position and the driving block is clamped and fixed between the pressing piece and the sleeve.

5. The quick release device of claim 3, wherein the first and second fasteners are each a screw. The pressing piece has a matching inclined surface and the driving block has a driving inclined surface which is in driving cooperation with the matching inclined surface.

6. The quick release device of claim 3, wherein the first and second fasteners are each a screw. A first elastic member is arranged between the sleeve and the handle piece. The first elastic member elastically biases the sleeve to move towards the first position.

7. The quick release device of claim 6, wherein the release lever is pivotally connected to the base member. An outer wall of one end of the handle piece connected with the mounting base is provided with a movable groove. An inner extension part is arranged on the inner wall of the sleeve. The first elastic member is fixedly connected with the inner extension part at one end and fixedly connected with the groove wall of the movable groove at the other end.

8. The quick release device of any one of claims 1-7, wherein, The quick release device comprises two pressing pieces which are arranged on opposite sides of the shaft hole. The driving piece selectively drives one of the two pressing pieces to press the connecting piece.

9. The quick release device of claim 8, wherein the release lever is pivotally connected to the base member. The driving piece is rotatable between a first rotation position and a second rotation position along the axial direction of the shaft hole. In the first rotation position, the driving block of the driving piece is located on the side of one of the two pressing pieces. In the second rotation position, the driving block is located on the side of the other one of the two pressing pieces.

10. The quick release device of claim 8, wherein the first and second fasteners are each a screw. The mounting base comprises a base body, a first connecting part and a second connecting part arranged at two ends of the base body. The second connecting part is connected with the handle piece. The shaft hole is arranged through the first connecting part, the base body and the second connecting part. The base body is provided with movable positions in communication with the shaft hole at opposite sides. The pressing piece is movably arranged in the movable positions.

11. The quick release device of claim 10, wherein the release lever is pivotally connected to the base member. The pressing piece comprises a base part, a driving part arranged on opposite sides of the base part, and a pressing part, the driving part is matched with the driving member, the pressing part has a pressing surface matched with the shape of the connecting member, and the pressing surface is used for pressing the side of the connecting member.

12. The quick release device of claim 11, wherein, The pressing surface is an abutting arc surface, the abutting arc surface is formed with a screw thread, and the radii of the abutting arc surfaces of the two pressing pieces are different.

13. The quick release device of claim 11, wherein the release lever is pivotally connected to the base member. The pressing part is arranged on one side of the base part close to the shaft hole, and the driving part is arranged on the other side of the base part away from the shaft hole.

14. The quick release device of claim 11, wherein the release lever is pivotally connected to the base member. A spacing part is formed between the two movable positions, the spacing part is provided with a communication hole corresponding to the position of the shaft hole, and the communication hole is used for allowing the pressing part to extend into.

15. The quick release device of claim 14, wherein the release lever is pivotally connected to the base member. A second elastic member is arranged between the two base parts, and the second elastic member applies an elastic bias to the two pressing pieces to make them move away from each other.

16. The quick release device of claim 15, wherein: The spacing part is provided with a through hole, the second elastic member is arranged in the through hole, and the two ends of the second elastic member abut against the two base parts, respectively.

17. The quick release device of claim 16, wherein the release lever is pivotally connected to the base member. The base part is provided with a groove, and the end of the second elastic member is located in the groove.

18. The quick release device of claim 10, wherein, The side wall of the seat body is provided with a rotating space and a stop part between the movable position and the second connecting part, the driving block is rotatably arranged in the rotating space, the stop part is arranged on the side of the rotating space away from the second connecting part and is used for stopping the driving block, and the two ends of the rotating space are provided with a communication port communicated with the movable position, respectively.

19. The quick release device of claim 8, wherein: The opposite sides of the handle member and the opposite sides of the mounting seat are respectively provided with a first identification mark and a second identification mark, the two first identification marks are arranged on the side of one of the pressing pieces, and the two second identification marks are arranged on the side of the other pressing piece.

20. A photographic apparatus characterized by comprising: The connecting member comprises a first locking part, a second locking part and a third locking part, the first locking part is arranged at the position where the connecting member contacts the pressing piece, the second locking part is arranged at one end of the connecting member in the shaft hole, the third locking part is arranged at the position corresponding to the end of the connecting member away from the shaft hole and close to the handle member, and the first locking part is arranged between the second locking part and the third locking part.

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