Softbox and its chuck assembly

Abstract

The present invention provides a soft box and a chuck assembly thereof. The chuck assembly includes a chuck and a rotating disk. The chuck includes a bearing ring and a sleeve. The bearing ring is arranged on the outer side of the sleeve, and the bearing ring is used to bear a plurality of ribs hingedly connected thereto. The rotating disk can be rotatably sleeved on the sleeve, and the rotating disk rotates along the circumference of the sleeve, and the rotating disk rises and falls along the axial direction of the sleeve. The lifting and lowering movement of the rotating disk presses the hinged end of the rib, and the lifting and lowering of the rotating disk drives the rib to swing relative to the bearing ring. When opening the above-mentioned soft box, the chuck assembly can avoid the operator's laborious operation, and the operation is convenient.

Description

Technical Field

[0001] The invention relates to photographing equipment, in particular to a soft box and a chuck assembly thereof. Background Art

[0002] A softbox is mounted on a studio light to give a softer light, eliminating light spots and shadows on photos. Most softboxes use umbrella ribs that fold up like an umbrella to support the soft cloth, forming the reflective surface of the softbox.

[0003] The larger the reflective surface of the softbox, the more uniform, softer and colorful the light. To achieve better shooting effects, the reflective area of ​​the softbox is required to be larger and larger. However, for a softbox that is too large, the length of the ribs is too long, which makes it difficult to store and open the ribs and inconvenient to operate. Summary of the invention

[0004] An object of the present invention is to provide a soft box and a chuck assembly thereof which are easy to use.

[0005] A chuck assembly of a soft box, comprising:

[0006] The chuck comprises a bearing ring and a sleeve, wherein the bearing ring is arranged on the outside of the sleeve and is used to bear a plurality of umbrella ribs hingedly connected thereto;

[0007] A rotating disk is rotatably mounted on the sleeve, the rotating disk rotates along the circumference of the sleeve, and the rotating disk rises and falls along the axial direction of the sleeve;

[0008] The lifting and lowering movement of the rotating disk presses the hinged end of the umbrella rib, and the lifting and lowering of the rotating disk drives the umbrella rib to swing relative to the carrying ring.

[0009] In one embodiment, the outer side of the sleeve and the inner side of the rotating disk are rotatably connected via mutually meshing threaded protrusions and threaded grooves.

[0010] In one embodiment, a fixed pressure plate is further included, which is sleeved between the carrying ring and the rotating disk. The fixed pressure plate can be rotatably arranged on the rotating disk. The rotating disk presses the fixed pressure plate, driving the fixed pressure plate to press the hinged end of the umbrella rib.

[0011] In one embodiment, a limiting structure is further provided between the rotating disk and the fixed pressure plate, and the limiting structure is fixed on the fixed pressure plate. A clearance groove for avoiding the limiting structure is opened on the side of the rotating disk facing the fixed pressure plate. When the rotating disk rotates, the limiting structure slides in the clearance groove. When the limiting structure moves to one end of the clearance groove, the limiting structure abuts against the side wall of the clearance groove to limit the rotation of the rotating disk.

[0012] In one embodiment, the air avoidance groove is arc-shaped, and its arc corresponds to the rotation stroke of the rotating disk.

[0013] In one embodiment, the arc of the air-avoiding groove is 60 degrees to 120 degrees.

[0014] In one embodiment, an elastic member is further included, wherein the elastic member is abutted between the fixed pressure plate and the bearing ring of the chuck. When the fixed pressure plate descends, the elastic member is pressed to contract, and when the elastic member recovers its deformation, the fixed pressure plate is reset.

[0015] In one embodiment, a boss is provided on the supporting ring, a screw hole is provided on the boss, a recess is provided at a relative position between the fixed pressure plate and the boss and protrudes toward the boss, a through hole is provided at the bottom of the recess for the boss to pass through, the boss moves telescopically along the through hole, the boss and the recess are screwed together by a screw, the nut of the screw is limited in the recess, and the elastic member is sleeved on the outside of the boss and the recess.

[0016] In one embodiment, it further comprises a bayonet for connecting a camera, and the bayonet is detachably connected to the chuck body.

[0017] In one embodiment, auxiliary holes are respectively formed on the outer sides of the chuck and the rotating disk.

[0018] A soft light box comprises an umbrella rib, a soft light cloth and a chuck assembly. The soft light cloth is detachably arranged on the umbrella rib, and one end of the umbrella rib is hinged on the carrying ring.

[0019] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0020] The chuck assembly of the soft box can avoid the operator using a lot of force to support each rib, and the ribs can be opened by rotating the rotating disk. In addition, when folding the ribs, the rotating disk rotates in the opposite direction to release the limit on the ribs and fold the ribs. Therefore, when using the chuck assembly of the soft box, the operator can avoid laborious operation, the operation is convenient, and the convenience of the soft box is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of a chuck assembly of the softbox of the present embodiment;

[0022] Figure 2 Based on Figure 1 A structural schematic diagram of another state of the chuck assembly shown;

[0023] Figure 3 Based on Figure 1 An exploded view of the chuck assembly is shown;

[0024] Figure 4 Based on Figure 3 A perspective view of the chuck from another angle;

[0025] Figure 5 Based on Figure 1 a cross-sectional view of the chuck assembly shown;

[0026] Figure 6 Based on Figure 2 a cross-sectional view of the chuck assembly shown;

[0027] Figure 7 Based on Figure 3 A three-dimensional view of the rotating disk shown at another angle;

[0028] Figure 8 Based on Figure 3 A three-dimensional view of another angle of the fixed pressure plate shown;

[0029] Fig. 9 Based on Figure 1 Schematic diagram of the rotation process of the chuck assembly shown. DETAILED DESCRIPTION

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0031] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0032] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0033] 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] The preferred embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings of this specification.

[0035] The present disclosure provides a soft box (not shown) and a chuck assembly thereof. The chuck assembly is used to fix a camera device (not shown) to the soft box, so as to facilitate the use of the camera device for shooting.

[0036] See also Figure 1 and Figure 2 Specifically, in this embodiment, the soft box includes a chuck assembly 10, an umbrella rib 20 and a soft cloth (not shown). The soft cloth is detachably mounted on the umbrella rib 20. One end of the umbrella rib 20 is hinged to the chuck assembly 10. The umbrella rib 20 can be opened and folded in an umbrella shape relative to the chuck assembly 10, so as to realize the opening and folding of the soft box. Figure 1 The rib 20 is in a folded state. Figure 2 It is a diagram showing the umbrella rib 20 in an open state.

[0037] Please also see Figure 3 The chuck assembly 10 includes a chuck 11, a chuck 12 and a rotating disk 13. The chuck 11 and the rotating disk 13 are both arranged on the chuck 12. The chuck 11 is used to connect a camera device or a light source. The rotating disk 13 rotates relative to the chuck 12 to drive the umbrella ribs 20 to open and fold.

[0038] The rib 20 is a long and narrow support rod for supporting the soft light cloth. The end of the rib 20 close to the chuck 12 is a hinge end 21. The hinge end 21 is provided with a hinge sleeve 22. The outer side surface of the hinge sleeve 22 is provided with an arc-shaped holding surface 23. The surface of the holding surface 23 is an arc-shaped surface. The arc-shaped surface helps to press the hinge end 21 to drive the rib 20 to move. Pivots 24 are provided on opposite sides of the hinge sleeve 22. The hinge end 21 rotates around the pivot 24 as an axis.

[0039] Please also see Figure 4 The chuck 12 includes a carrying ring 121 and a sleeve 122. The carrying ring 121 is arranged on the outside of the sleeve 122. The chuck 12 can be an injection molded part. The carrying ring 121 and the sleeve 122 can be integrally formed. The central axis of the sleeve 122 is the optical axis direction of the camera device.

[0040] A diffuse reflection layer 120 is provided on the side of the carrying ring 121 facing away from the rotating disk 13. The diffuse reflection layer 120 can diffusely reflect the light from the light source to ensure that the light in the soft box is soft. The diffuse reflection layer 120 is provided with a pattern that can form diffuse reflection. Specifically in this embodiment, the pattern can be a stepped pattern.

[0041] The carrying ring 121 is used to carry a plurality of umbrella ribs 20 hingedly connected thereto. The carrying ring 121 is provided with a supporting surface. The supporting surface is provided with a hinge portion 123 for hingedly connecting the umbrella ribs 20. The hinge portion 123 protrudes from the annular supporting surface. Moreover, the hinge portions 123 are evenly distributed along the circumference of the annular supporting surface. Specifically, the hinge portion 123 is provided with an axis groove 124 for accommodating the pivot shaft 24 of the umbrella rib 20. The pivot shaft 24 can be respectively accommodated in the axis groove 124 of the hinge portion 123 to form an hinged connection with the hinge portion 123.

[0042] Furthermore, the hinge portion 123 has a certain height, and the shaft groove 124 also has a certain height. When the pivot 24 of the rib 20 rotates in the shaft groove 124, the pivot 24 also moves up and down along the extension direction of the shaft groove 124. On the one hand, it is convenient for the rib 20 to swing relative to the carrying ring 121, and on the other hand, when the rib 20 is fully opened, the outer side surface of the hinge end 21 of the rib 20 can be abutted against the support surface, ensuring that the rib 20 can be stably in the open state.

[0043] The sleeve 122 is disposed on the inner side of the carrying ring 121. A step portion 125 is disposed on the inner side of the sleeve 122. The step portion 125 is connected to the bayonet 11. Specifically, the bayonet 11 is provided with a convex edge 111. Figure 5The convex edge 111 can be fixedly connected to the step portion 125 by a screw 30, so that the bayonet 11 and the chuck 12 can be detachably connected. When the type of the bayonet 11 needs to be changed, the screw 30 needs to be removed. In other embodiments, the bayonet 11 can also be detachably connected to the chuck 12 by a snap connection.

[0044] Please refer again Figure 3 Specifically in this embodiment, the bayonet 11 is provided with a plurality of protrusions 112 on the outer side for engaging and connecting with the camera device. The protrusions 112 can realize the position-limiting connection between the bayonet 11 and the camera device. It can be understood that when the bayonet 11 is a bayonet of a different type, the protrusions 112 can also be omitted. The bayonet 11 can also be connected to the camera device in a position-limiting manner through other corresponding types of structural forms.

[0045] Please refer again Figure 4 The outer side of the sleeve 122 is provided with a first rotating thread 126. The rotating thread direction is a positive thread. Specifically, the thread groove of the first rotating thread 126. In addition, the height of the first rotating thread 126 provided on the sleeve 122 is greater than the distance to which the pivot 24 of the umbrella rib 20 moves up and down along the shaft groove 124 when the umbrella rib 20 is fully opened to fully folded.

[0046] Please also see Figure 5 and Figure 6 , the rotating disk 13 can be rotatably sleeved on the sleeve 122. The rotating disk 13 rotates along the circumferential direction of the sleeve 122, and the rotating disk 13 rises and falls along the axial direction of the sleeve 122. The inner side of the rotating disk 13 is provided with a second rotating thread 131 that meshes with the first rotating thread 126 of the sleeve 122. In addition, the second rotating thread 131 is a thread protrusion. The thread protrusion and the thread groove are rotationally connected. In other embodiments, the first rotating thread 126 can also be a thread protrusion, and the second rotating thread 131 is correspondingly a thread groove. The specific shapes of the first rotating thread 126 and the second rotating thread 131 are not limited here, as long as the first rotating thread 126 and the second rotating thread 131 can be meshed and connected.

[0047] Specifically, an extension portion 132 is provided on the inner side of the rotating disk 13, and the extension portion 132 extends upward or downward along the axial direction of the rotating disk 13, and a second rotating thread 131 is provided on the extension portion. The extension portion 132 can increase the contact area between the rotating disk 13 and the sleeve 122, and facilitate the rotation of the rotating disk 13. In addition, the extension portion can be pressed on the pressing surface 23.

[0048] When the rotating disk 13 rotates relative to the sleeve 122, the rotating disk 13 can rotate along the tracks of the first rotating thread 126 and the second rotating thread 131. When the rotating disk 13 rotates relative to the sleeve, due to the guiding effect of the rotating thread, the rotating disk 13 moves up and down along the axial direction of the sleeve 122. The lifting and lowering movement of the rotating disk 13 presses the hinge end 21 of the umbrella rib 20.

[0049] When the rotating disk 13 moves toward the chuck 12, the hinge end 21 is subjected to downward pressure, the pivot 24 rotates and moves downward along the shaft groove 124, and the other end of the rib 20 opens, so that the diffuser cloth is spread out. When the rotating disk 13 moves away from the chuck 12, the hinge end 21 is no longer subjected to pressure, and the rib 20 can be restored and folded.

[0050] Please refer again Figure 3 The chuck assembly 10 of the soft box of this embodiment further includes a fixed pressing plate 14. The fixed pressing plate 14 is sleeved between the carrying ring 121 and the rotating disk 13. The fixed pressing plate 14 is rotatably arranged on the rotating disk 13. The rotating disk 13 presses the fixed pressing plate 14, driving the fixed pressing plate 14 to press the hinged end 21 of the umbrella rib 20.

[0051] During the rotation of the rotating disk 13, since the rotating disk 13 rotates relative to the ribs 20, there is friction between the rotating disk 13 and the hinged ends 21 of the ribs 20. In addition, the rotating disk 13 needs a relatively large pressure to hold the ribs 20, so the friction between the rotating disk 13 and the ribs 20 is also relatively large. This friction has a relatively large hindering effect on the rotation of the rotating disk 13. In addition, the plurality of ribs 20 are arranged at intervals, and the force on the rotating disk 13 is uneven, which is not conducive to the smooth rotation of the rotating disk 13.

[0052] The rotating disk 13 is rotatably connected to the fixed pressing plate 14, and the fixed pressing plate 14 does not rotate relative to the umbrella rib 20. There is friction between the rotating disk 13 and the fixed pressing plate 14. Since the surface of the fixed pressing plate 14 is smooth, the pressure between the rotating disk 13 and the fixed pressing plate 14 is evenly distributed, so the friction between the rotating disk 13 and the fixed pressing plate 14 is small. Therefore, the fixed pressing plate 14 can prevent the rotating disk 13 from being subjected to a large friction resistance, and the rotating disk 13 can rotate smoothly.

[0053] A limiting structure is also provided between the rotating disk 13 and the fixed pressing plate 14. The limiting structure is fixedly provided on the fixed pressing plate 14. Figure 7, a clearance groove 133 for avoiding the limiting structure is provided on one side of the rotating disk 13 facing the fixed pressure plate 14. The rotating disk 13 rotates, and the limiting structure slides in the clearance groove 133. When the limiting structure moves to one end of the clearance groove 133, the limiting structure abuts against the side wall of the clearance groove 133 to limit the rotation of the rotating disk 13. Therefore, the limiting structure can prevent the rotating disk 13 from rotating beyond its predetermined stroke, prevent the rotating disk 13 from falling off the sleeve 122, or excessively squeeze the abutting end of the umbrella rib 20.

[0054] Specifically in this embodiment, please refer to Figure 3 , the limiting structure can be a screw 40. The screw 40 passes through the rotating disk 13 and is fixed on the fixed pressure plate 14. Correspondingly, the rotating disk 13 is provided with a through hole (not marked in the figure). The through hole is only used to pass the screw 40 to facilitate the installation of the screw 40. The fixed pressure plate 14 is correspondingly provided with a screw hole 141 for fixing the screw 40. The screw 40 is fixed on the fixed pressure plate 14 and protrudes from the surface of the fixed pressure plate 14. The nut of the screw 40 can extend into the air avoidance groove 133.

[0055] The avoidance groove 133 is arc-shaped, and its curvature corresponds to the rotation stroke of the rotating disk 13. When the nut of the screw contacts the inner side wall of the avoidance groove 133 and abuts against the limit position, the rotating disk 13 cannot continue to rotate, thereby achieving the purpose of limiting the rotating disk 13.

[0056] Specifically, the arc of the air-avoiding groove 133 is 60 degrees to 120 degrees. That is, the rotation stroke of the rotating disk 13 is 60 degrees to 120 degrees. Within the rotation stroke range, it is convenient for the operator to rotate, and it is avoided that the rotation stroke is too large, and the operator needs to rotate around the soft box. At the same time, it can also avoid that the rotation stroke is too small, and the rotation resistance of the rotating disk 13 is too large, resulting in difficulty in rotation.

[0057] See also Figure 5 and Figure 6 The chuck assembly 10 of the soft box of this embodiment further includes an elastic member 15. The elastic member 15 is held between the fixed pressure plate 14 and the bearing ring 121 of the chuck 12. The fixed pressure plate 14 is lowered to press the elastic member 15 to shrink. The elastic member 15 recovers its deformation and the fixed pressure plate 14 is reset.

[0058] When the rotating disk 13 and the fixed pressure plate 14 press downward the hinged end 21 of the umbrella rib 20, the elastic member 15 is compressed and contracted as the fixed pressure plate 14 moves downward. Since the elastic member 15 is compressed and has elastic potential energy, when the rotating disk 13 rotates in the opposite direction and releases the pressure on the umbrella rib 20, the elastic member 15 will restore the elastic deformation and the elastic member 15 will resume elongation. The fixed pressure plate 14 will be lifted up by the elastic member 15 and return to its initial position. The above-mentioned chuck assembly 10 can automatically reset the fixed pressure plate 14 through the elastic member 15, so as to prevent the fixed pressure plate 14 from shaking between the rotating disk 13 and the supporting ring 121 of the chuck, thereby affecting the stability of the chuck assembly 10.

[0059] See also Figure 4 Specifically in this embodiment, a boss 127 is provided on the carrying ring 121. The boss 127 is provided with a screw hole 128. Figure 8 A recess 142 is formed at a position where the fixed pressing plate 14 and the protruding column 127 are opposite to each other and extends toward the protruding column 127. A through hole 143 is formed at the bottom of the recess 142 so that the protruding column 127 can pass through. Figure 5 and Figure 6 When the fixed pressure plate 14 moves up and down relative to the bearing ring, the boss 127 moves telescopically along the through hole 143. The boss 127 is screwed to the sink 142 by the screw 60. The nut 61 of the screw 60 is limited in the sink 142. That is, the aperture size of the through hole 143 is smaller than the diameter size of the nut 61, but the aperture size of the through hole 143 is larger than the diameter size of the stud 62, so as to ensure that the stud 62 of the screw 60 can pass through the through hole 143, and the nut 61 is limited in the sink 142.

[0060] When the fixed pressure plate 14 is away from the bearing ring, the nut 61 of the screw 60 abuts against the side wall of the bottom of the through hole 143 to prevent the nut 61 from escaping from the recess 142 , causing the fixed pressure plate 14 and the bearing ring 121 to detach from each other.

[0061] The elastic member 15 is sleeved on the outer side of the boss 127 and the sink 142. The boss 127 and the sink 142 can guide and limit the expansion and contraction of the elastic member 15, thereby preventing the elastic member 15 from shifting during the expansion and contraction process. The elastic member 15 can be a spring.

[0062] See also Fig. 9, the outer side surfaces of the chuck 12 and the rotating disk 13 are respectively provided with auxiliary holes 129 and 139. The auxiliary holes 129 and 139 can be inserted with the auxiliary rotating pin 50, and the auxiliary rotating pin 50 can be convenient for the operator to hold. In addition, the chuck 12 and the rotating disk 13 are respectively provided with auxiliary holes 129 and 139, and the two auxiliary holes 129 and 139 are respectively provided with auxiliary rotating pins 50. The operator holds an auxiliary rotating pin 50 with both hands, and applies force at the same time to increase the torque of the rotating force, so that the rotating disk 13 and the chuck 12 can be easily rotated relative to each other.

[0063] Furthermore, there can be multiple auxiliary holes 129 and 139. The operator can select two of them according to the convenience of use, and select the auxiliary holes 129 and 139 with more convenient operating distances for operation. Therefore, the auxiliary holes 129 and 139 enhance the convenience of operation and are more humane.

[0064] After the rotation is completed, the auxiliary rotation pin 50 can be removed from the auxiliary holes 129 and 139 without affecting the volume and normal use of the chuck assembly 10.

[0065] The chuck assembly 10 of the soft box can avoid the operator from using a lot of strength to support each rib 20, and the ribs 20 can be opened by rotating the rotating disk 13. In addition, when folding the ribs 20, the rotating disk 13 is rotated in the opposite direction to release the pressure and limit on the ribs 20, so that the ribs 20 can be folded. Therefore, the chuck assembly 10 of the soft box can avoid the operator's laborious operation, is easy to operate, and improves the convenience of using the soft box.

[0066] Although the present invention 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 present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A chuck assembly for a soft box, characterized in that: include: The chuck comprises a bearing ring and a sleeve, wherein the bearing ring is arranged on the outside of the sleeve and is used to bear a plurality of umbrella ribs hingedly connected thereto; A rotating disk is rotatably mounted on the sleeve, the rotating disk rotates along the circumference of the sleeve, and the rotating disk rises and falls along the axial direction of the sleeve; The lifting and lowering movement of the rotating disk presses the hinged end of the umbrella rib, and the lifting and lowering of the rotating disk drives the umbrella rib to swing relative to the carrying ring; It also includes a fixed pressing plate, which is sleeved between the carrying ring and the rotating disk, and is rotatably arranged on the rotating disk. The fixed pressing plate does not rotate relative to the umbrella rib, and the rotating disk presses the fixed pressing plate to drive the fixed pressing plate to press the hinged end of the umbrella rib; A limiting structure is also provided between the rotating disk and the fixed pressure plate, and the limiting structure is fixed on the fixed pressure plate. A clearance groove for avoiding the limiting structure is opened on the side of the rotating disk facing the fixed pressure plate. When the rotating disk rotates, the limiting structure slides in the clearance groove. When the limiting structure moves to one end of the clearance groove, the limiting structure abuts against the side wall of the clearance groove to limit the rotation of the rotating disk.

2. The chuck assembly of the soft box according to claim 1, characterized in that: The outer side of the sleeve and the inner side of the rotating disk are rotatably connected via mutually meshing thread protrusions and thread grooves.

3. The chuck assembly of the soft box according to claim 1, characterized in that: The air avoidance groove is arc-shaped, and its arc corresponds to the rotation stroke of the rotating disk.

4. The chuck assembly of the soft box according to claim 3, characterized in that: The arc of the air avoidance groove is 60 degrees to 120 degrees.

5. The chuck assembly of the soft box according to claim 1, characterized in that: It also includes an elastic member, which is abutted between the fixed pressure plate and the bearing ring of the chuck. The fixed pressure plate is lowered to press the elastic member to contract, and the elastic member recovers its deformation and the fixed pressure plate is reset.

6. The chuck assembly of the soft box according to claim 5, characterized in that: The supporting ring is provided with a boss, and a screw hole is opened on the boss. A recessed groove is provided at a relative position between the fixed pressure plate and the boss and protrudes toward the boss. A through hole is opened at the bottom of the recessed groove for the boss to pass through. The boss moves along the through hole. The boss and the recessed groove are screwed together by a screw. The nut of the screw is limited in the recessed groove, and the elastic member is sleeved on the outer side of the boss and the recessed groove.

7. The chuck assembly of the soft box according to claim 1, characterized in that: It also includes a bayonet for connecting a camera, and the bayonet is detachably connected to the chuck body.

8. The chuck assembly of the soft box according to claim 1, characterized in that: Auxiliary holes are respectively formed on the outer sides of the chuck and the rotating disk.

9. A soft box, characterized in that: It comprises an umbrella rib, a soft light cloth and a chuck assembly as described in any one of claims 1 to 8, wherein the soft light cloth is detachably arranged on the umbrella rib, and one end of the umbrella rib is hinged to the carrying ring.

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