Chuck, softbox comprising chuck and use method of softbox

Abstract

The invention discloses a chuck, a soft box and a using method. The chuck comprises a base, a movable connector, a cover assembly and a locking piece. The movable joint is arranged in the circumferential direction of the chuck, is rotationally mounted on the base and has a folded state and an unfolded state; the cover assembly is axially and movably assembled on the base, and when the cover assembly and the base are folded, the multiple movable connectors are driven to be synchronously switched from the folded state to the unfolded state. And the locking piece is used for locking the cover assembly and the base and keeping the movable joints in an unfolded state. Compared with the prior art, all the rotating joints are driven by the movable cover assembly to be synchronously switched from the folded state to the unfolded state, and operation is simplified.

Description

Technical Field

[0001] The present application relates to a photography auxiliary device, and more particularly to a chuck, a soft box including the chuck, and a method for using the soft box. Background Art

[0002] A softbox, also known as a softlight cover, is a commonly used device in the field of photography and videography. It needs to be used in conjunction with a photographic light source to concentrate the light and make the light of the light-transmitting softbox softer. Existing softboxes generally consist of a central chuck, a support rod connected to the chuck, and a reflective cloth lining the support rod, wherein the support rod is movably connected to the chuck and has an unfolded and folded state, which is convenient for use and storage. Generally speaking, the chuck is provided with the same number of locking pieces as the support rods. When in use, the support rods need to be unfolded one by one, and when stored, the support rods also need to be unlocked one by one, which is cumbersome to operate. Summary of the invention

[0003] The invention provides a chuck for a soft box, which solves the problem of complicated operation of the soft box in the prior art.

[0004] The chuck for the softbox is a ring-shaped structure, comprising:

[0005] Pedestal;

[0006] A plurality of movable joints are arranged along the circumference of the chuck and are rotatably mounted on the base, and have a folded state and an extended state;

[0007] A cover assembly is axially movably assembled on the base, and when the two are closed, the multiple movable joints are driven to synchronously switch from a retracted state to an extended state;

[0008] The locking member is used to lock the cover assembly and the base to keep the multiple movable joints in an expanded state.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0010] Optionally, the cover assembly includes a positioning member fixed circumferentially relative to the base and a rotating member rotatably connected to the positioning member.

[0011] Optionally, the locking member is unlocked by rotating the rotating member.

[0012] Optionally, the unlocking angle of the rotating member is not greater than 20 degrees.

[0013] Optionally, the locking member is fixed to the rotating member.

[0014] Optionally, an elastic member is provided between the rotating member and the positioning member.

[0015] Optionally, the cover assembly includes a first limiting member connecting the positioning member and the rotating member to limit their axial separation.

[0016] Optionally, the positioning member is located on the inner side of the rotating member, and the plurality of movable joints abut against the positioning member in the unfolded state.

[0017] Optionally, the bottom surface of the positioning member has an avoidance groove allowing the movable joint to rotate.

[0018] Optionally, a rolling element for reducing rotational friction is provided between the positioning element and the rotating element.

[0019] Optionally, the locking members are multiple and can be unlocked synchronously.

[0020] Optionally, an elastic member is included to drive the locking member to reset.

[0021] Optionally, a second limiting member is included to limit the cover assembly from axially separating from the base.

[0022] Optionally, a detachable conical shielding member is provided on a side of the base facing away from the cover assembly.

[0023] The present invention also provides a soft box, comprising: a chuck;

[0024] A support rod connected to the movable joint, wherein the support rods are radially arranged with the chuck as the center in an unfolded state;

[0025] Reflective cloth is lined on the support rod.

[0026] The present invention also provides a method for using a soft box, including an unfolding method and a folding method. The unfolding method includes: axially pressing the cover assembly to close it with the base, and driving the support rod to unfold.

[0027] Optionally, the chuck includes an elastic member, and when the cover assembly and the base are closed in place, the elastic member drives the locking member to reset, so that the cover assembly and the base are locked.

[0028] Optionally, the cover assembly includes a positioning member fixed circumferentially relative to the base and a rotating member rotatably connected to the positioning member; the folding method includes: rotating the rotating member to unlock the locking member, disengaging the cover assembly and the base, and folding the support rod.

[0029] Optionally, the unlocking angle of the rotating member is not greater than 20 degrees.

[0030] Compared with the prior art, the present invention utilizes a movable cover assembly to drive all rotating joints to switch synchronously from a folded state to an unfolded state, thereby simplifying the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a chuck in an embodiment of the present application when the movable joint is folded;

[0032] Figure 2 This is a schematic diagram of the structure of a chuck in an embodiment of the present application when the movable joint is unfolded;

[0033] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the chuck;

[0034] Figure 4 for Figure 2 Another angle schematic diagram of the chuck explosion structure shown;

[0035] Figure 5 for Figure 1 a cross-sectional view of the chuck shown;

[0036] Figure 6 for Figure 2 a cross-sectional view of the chuck shown;

[0037] Figure 7 This is a structural schematic diagram of the unlocked state of the chuck locking member in one embodiment of the present application;

[0038] Figure 8 This is a structural schematic diagram of a locked state of a chuck locking member in an embodiment of the present application;

[0039] Fig. 9 This is a schematic diagram of the structure of a movable joint in an embodiment of the present application;

[0040] Fig.10 It is a cross-sectional view of a connection structure between a rotating member and a positioning member in one embodiment of the present application;

[0041] Fig.11 It is a cross-sectional view of the connection structure between the positioning member and the base when the movable joint is folded in one embodiment of the present application;

[0042] Fig.12 It is a cross-sectional view of the connection structure between the positioning member and the base when the movable joint is unfolded in one embodiment of the present application;

[0043] Fig.13 Schematic diagram of the structure of a soft box in one embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0046] In the present application, terms such as "center", "length", "width", "thickness", "top", "bottom", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "axial", and "circumferential" indicate directions or positional relationships based on the directions or positional relationships shown in certain drawings, or based on the spatial posture of the product in normal use. Of course, they are only for the convenience of description, and do not indicate or imply that the position or component referred to must have a specific direction, structure, and operation, and therefore should not be understood as a limitation on the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] refer to Figure 1-2 In one embodiment of the present application, a chuck 100 for a soft box is provided, which is generally an annular structure with a light-transmitting hole in the center. In the figure, its outer contour is circular, but of course, other shapes such as square can also be used. The chuck 100 has a circumferential direction and an axial direction.

[0049] The chuck 100 includes a base 110, a cover assembly, and a plurality of movable joints 120. The movable joints 120 are distributed along the circumference of the base 110 and are rotatably mounted on the base 110 so as to have a substantially flat unfolded state and a vertical folded state.

[0050] In the prior art, the cover assembly is mainly used to cover and fix the movable joint. It is generally fixed to the base by fasteners, and in order to keep the movable joint in an expanded state, the chuck is provided with locking devices with the same number as the movable joints. However, this design brings the problem of cumbersome operation to the softbox, and the movable joints need to be expanded one by one together with the support rods when in use.

[0051] In order to overcome the above defects, the present application sets the cover assembly to be movable, that is, it can move relative to the base 110 along the axial direction. Figure 1 , 5 , 7 and 11, there is a height difference H between the cover assembly and the base 110. When the two are closed, as shown in Figure 2 , 6 As shown in FIG. 8 , all movable joints 120 can be driven to switch synchronously from the folded state to the unfolded state to solve the above-mentioned problem of complicated operation.

[0052] like Figure 3-4 As shown, in order to keep the movable joint 120 in the expanded state, the chuck 100 includes a locking member 130 for locking the base 110 and the cover assembly to limit the axial separation of the two.

[0053] like Figure 5-8 As shown, in order to improve the convenience of the unlocking operation, in some embodiments, the cover assembly includes a positioning member 140 circumferentially fixed relative to the base 110 and a rotating member 150 rotatably connected to the positioning member 140 , and the locking member 130 is unlocked by rotating the rotating member 150 .

[0054] In some embodiments, the locking member 130 is fixed to the rotating member 150 and can rotate with the rotating member 150. Figure 3 , 7 As shown in FIG. 8 , the locking member 130 is convexly disposed on the inner surface of the rotating member 150 and is provided with a hook portion 131 at the distal end, one side of the hook portion 131 having an inclined surface 132. The corresponding base 110 is provided with a locking hole 111 that matches the locking member 130.

[0055] like Figure 7-8 As shown, in order to reduce the height of the chuck 100, a hollow protrusion 116 is provided on the base 110, the protrusion is arranged near the locking hole 111, and a side wall close to the locking hole 111 has a notch 117, and a recess 148 for accommodating the protrusion 116 is provided on the positioning member 140, and when the hook 131 enters the notch 117, locking can be achieved.

[0056] In order to achieve automatic locking of the base 110 and the cover assembly, that is, when the cover assembly and the base are closed in place, the locking member automatically locks the base 110 and the cover assembly. In some embodiments, the chuck includes an elastic member that drives the locking member 130 to reset.

[0057] Specifically, Figure 3 , 7 As shown in , 8, an elastic member 160 is arranged between the rotating member 150 and the positioning member 140, and both are provided with a positioning groove 154 and a positioning groove 147 that cooperate with each other to accommodate the elastic member 160. The elastic member 160 is a coil spring, one end of the coil spring abuts against the end surface of the positioning groove, and the other end abuts against the locking member 130.

[0058] like Figure 7-8 As shown, when the cover assembly is axially aligned with the base 110 ( Figure 5 When the locking member 110 is closed (in the direction of the arrow), the movable joint 120 is driven to switch from the retracted state to the extended state. At the same time, the edge of the locking hole 111 (i.e., the side wall of the protrusion 116) presses against the inclined surface 132 of the locking member 130, so that the rotating member 150 rotates in the counterclockwise direction and compresses the elastic member 160.

[0059] After the hook 131 passes through the locking hole 111 , the rotating member 150 rotates clockwise under the action of the elastic member 160 , so that the hook 131 can be inserted into the notch 117 , thereby locking the base 110 and the cover assembly, and keeping the movable joint 120 in the expanded state.

[0060] As shown in Figure 6, when unlocking, the driving rotating member 150 is rotated counterclockwise (in the direction of the arrow), and the resistance of the elastic member 160 is manually overcome to drive the locking member 130 to disengage from the notch 117, that is, it can be pulled out from the lock hole 111, so that the cover assembly and the base 110 are disengaged, and the movable joint 120 is switched from the expanded state to the retracted state due to gravity.

[0061] Generally speaking, the length of the hook portion 131 is limited, so the rotation angle of the rotating member 150 when unlocking is usually not greater than 20 degrees, and more preferably not greater than 10 degrees.

[0062] like Figure 3 As shown, in the above embodiment, there are four locking members 130, which are evenly arranged on the rotating member 150 and are integrally formed with the rotating member 150. When the rotating member 150 rotates, the four locking members 130 can be unlocked synchronously.

[0063] In some embodiments, the locking member 130 can be movably arranged on the base 110 or the positioning member 140, and an unlocking member can be arranged on the rotating member 150, and when the rotating member 150 rotates, the unlocking member drives the locking member to unlock. In order to realize automatic locking, an elastic member that drives the locking member to automatically reset is arranged on the corresponding component.

[0064] To facilitate assembly and operation, in some embodiments, the positioning member 140 and the rotating member 150 are axially inseparable. Figure 3 and 10As shown, a plurality of hole columns 151 are convexly provided on the inner side of the rotating member 150, and a plurality of arc holes 141 cooperating with the hole columns 151 are provided on the corresponding positioning member 140, and the hole columns 151 are inserted into the arc holes 141 and connected with screws 152, and a gasket 153 is sleeved on the screw 152, and the gasket 153 is a first stopper for limiting the axial separation of the rotating member 150 and the positioning member 140. The arc hole 141 is set as a stepped hole, and the screw 152 and the gasket 153 can be hidden in the stepped hole.

[0065] Since the rotating member 150 and the positioning member 140 are both in the form of sheets, after assembly, the two members are pressed against each other, which will cause a large friction between them and make the unlocking operation inconvenient. In some embodiments, the cover assembly includes a rolling member 190, which can be a steel ball, embedded in a groove on the surface of the rotating member 150 or the positioning member 140, and is clamped and fixed by the two members.

[0066] like Figure 3 , 11 As shown in Figures 12, in some embodiments, to prevent the cover assembly from being separated from the base 110, a plurality of hole columns 142 are provided on the positioning member 140, and a plurality of positioning holes 112 are provided on the corresponding base 110. The hole columns 142 pass through the positioning holes 112 and are connected to the screws 144. The screws 144 are sleeved with gaskets 143 as second limiting members for limiting the axial separation of the positioning member 140 from the base 110. The positioning holes 112 are configured as stepped holes, and the screws 144 and the gaskets 143 can be hidden in the stepped holes.

[0067] like Fig. 9 As shown, the movable joint 120 has pivot shafts 121 on both sides, and it can rotate around the pivot shafts 121 as a fulcrum, and has a force-bearing portion 122 and a connecting portion 123. The force-bearing portion 122 protrudes outward. After being squeezed by the cover assembly, the movable joint rotates around the pivot shaft 121 and switches from a folded state to an expanded state. The end surface of the plug-in portion 123 is provided with a plug-in hole 124 that cooperates with the support rod.

[0068] To facilitate the positioning and installation of the movable joint 120, the base 110 is provided with an assembly groove 113 that cooperates with the movable joint 120. Figure 4-6 As shown, the positioning member 140 is disposed on the inner side of the rotating member 150, and a through hole 146 is disposed thereon. The locking member 130 passes through the positioning member 140, and the positioning member 140 directly abuts against the movable joint 120. In order to reduce the overall height of the chuck 100, the positioning member 140 has an avoidance groove 145 that allows the movable joint 120 to rotate, and the bottom surface of the avoidance groove 145 always abuts against the force-bearing portion 121 when the movable joint 120 rotates.

[0069] For easy assembly and good appearance, the base 110 is provided with a limiting cavity 116 adapted to the cover assembly, which limits the lateral movement of the cover assembly. The rotating member 150 has a radially enlarged limiting portion 155 that limits the movement of the cover assembly to prevent the movable joint 120 from excessive rotation.

[0070] When in use, the softbox needs to be connected to the photographic light, and the chuck 100 also includes an interface 170, on which a plurality of blocks 171 are arranged, which can be connected to the photographic light. The interface 170 of the present application is fixedly connected to the rotating member 150, and can be used as a mechanism for operating the cover assembly.

[0071] like Fig.13 As shown, an embodiment of the present application provides a soft box, which includes a chuck 100, a support rod 200 and a reflective cloth 300. The support rod 200 is elastic and can be elastically bent. The proximal end is plugged and fixed with the movable joint 120, and can rotate synchronously with the movable joint 120 to achieve folding and opening. In the open state, the reflective cloth 300 is arranged radially with the chuck 100 as the center. The reflective cloth 300 is lined on the support rod 200. Specifically, the installation method is to set a perforation on the front or back of the reflective cloth 300 for the support rod 200 to pass through. When the support rod 200 is opened, the reflective cloth forms a reflective cover.

[0072] Since the reflective cloth 300 is not close to the surface of the chuck 100, and the surface of the base 110 is uneven, the reflective effect is poor. Figure 3-6 As shown, in some embodiments, a conical shielding member 180 is provided on the side of the base 110 facing away from the cover assembly. The shielding member 180 can cover the untensioned portion of the mouth of the reflective cloth 300, so that the light output effect of the soft light box is better. In addition, a ring-shaped elastic band can be provided at the small mouth of the reflective cloth, and the shielding member 180 can pass through the opening formed by the elastic band to prevent the reflective cloth 300 from falling off and keep it in a tensioned state.

[0073] Preferably, the shielding member 180 is detachable. Figure 3 and 4 As shown, it has a positioning portion 181 and a clamping portion 182, and the corresponding base is provided with a positioning hole 114 and a clamping hole 115. In addition, the edge of the shielding member 180 has a notch 183 for avoiding the movable joint 120.

[0074] The method of using the soft box of the present application includes an unfolding method and a folding method, which are as follows:

[0075] Deployment method: Press the cover assembly axially, and after the cover assembly and the base 110 are closed in place, drive the movable joint 120 together with the support rod 200 to rotate, switch from the folded state to the unfolded state, and the reflective cloth is stretched to form a bowl-shaped cover structure. The cover assembly can also be supported on a support (such as the ground), and the base 110 is pressed (by stepping) to unfold the support rod 200.

[0076] An elastic member 160 is disposed on the chuck, and when the cover assembly and the base 110 are closed in place, the elastic member 160 can automatically drive the locking member 130 to lock the cover assembly and the base 110, so as to simplify the operation.

[0077] Folding method: rotate the rotating member 150 counterclockwise to unlock the locking member 130, so that the cover assembly and the base 110 are axially disengaged, and the movable joint 120 is no longer squeezed by the positioning member 140. The support rod 200 and the movable joint 120 rotate in opposite directions due to gravity to achieve folding.

[0078] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0079] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A chuck for a soft box, which is a ring-shaped structure, characterized in that: include: Pedestal; A plurality of movable joints are arranged along the circumference of the chuck and are rotatably mounted on the base, and have a folded state and an extended state; A cover assembly is axially movably assembled on the base, and when the two are closed, the multiple movable joints are driven to synchronously switch from a retracted state to an extended state; The locking member is used to lock the cover assembly and the base to keep the multiple movable joints in an expanded state.

2. The chuck according to claim 1, characterized in that The cover assembly includes a positioning member fixed circumferentially relative to the base and a rotating member rotatably connected to the positioning member.

3. The chuck according to claim 2, characterized in that The locking member is unlocked by rotating the rotating member.

4. The chuck according to claim 3, characterized in that The unlocking angle of the rotating member is no greater than 20 degrees.

5. The chuck according to claim 3, characterized in that The locking member is fixed to the rotating member.

6. The chuck according to claim 5, characterized in that An elastic member is arranged between the rotating member and the positioning member.

7. The chuck according to claim 2, characterized in that: The cover assembly includes a first limiting member for limiting the axial separation of the positioning member and the rotating member.

8. The chuck according to claim 2, characterized in that The positioning member is located at the inner side of the rotating member, and the plurality of movable joints abut against the positioning member in the unfolded state.

9. The chuck according to claim 8, characterized in that The bottom surface of the positioning member is provided with an avoidance groove for allowing the movable joint to rotate.

10. The chuck according to claim 2, characterized in that A rolling element for reducing rotational friction is arranged between the positioning element and the rotating element.

11. The chuck according to claim 1, characterized in that The locking members are multiple and unlocked synchronously.

12. The chuck according to claim 1, characterized in that It includes an elastic member for driving the locking member to reset.

13. The chuck according to claim 1, characterized in that A second limiting member is included to limit the cover assembly from axially separating from the base.

14. The chuck according to claim 1, characterized in that It comprises a detachable conical shielding member which is arranged on the side of the base facing away from the cover assembly.

15. Softbox, characterized in that, include: The chuck as claimed in any one of claims 1 to 14; A support rod connected to the movable joint, wherein the support rods are radially arranged with the chuck as the center in an unfolded state; Reflective cloth is lined on the support rod.

16. The method for using a soft box according to claim 15, characterized in that: It comprises an unfolding method and a folding method. The unfolding method comprises: axially pressing the cover assembly to close it with the base, and driving the support rod to unfold.

17. The method for using a soft box according to claim 16, characterized in that: The chuck comprises an elastic member, and when the cover assembly and the base are closed in place, the elastic member drives the locking member to reset, so that the cover assembly and the base are locked.

18. The method of use according to claim 17, characterized in that: The cover assembly includes a positioning member fixed circumferentially relative to the base and a rotating member rotatably connected to the positioning member; The folding method comprises: rotating the rotating member to unlock the locking member, disengaging the cover assembly from the base, and folding the support rod.

19. The method of use according to claim 18, characterized in that: The unlocking angle of the rotating member is no greater than 20 degrees.

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