A soft light box chuck mechanism and a soft light box

Abstract

The present invention discloses a softbox chuck mechanism, which includes a positioning member, a socket, and a locking mechanism. The positioning member has a first outer diameter ring, a second outer diameter ring, and a third outer diameter ring; the first outer diameter ring has a limiting pressing portion for pressing the end of the socket; the second outer diameter ring is provided with a locking mechanism on the radial outer side of the first outer diameter ring; the third outer diameter ring has a pressing section on the radial outer side of the second outer diameter ring; a slideway is formed between the first outer diameter ring and the second outer diameter ring, and the socket can enter the limiting pressing portion from this slideway; when unfolded, the axis of the socket is parallel to the radial direction of the positioning member, there are at least two first support points between the limiting pressing portion and the socket, there is a second support point between the pressing section and the socket, the first support points and the second support point enclose to form a triangle, and the horizontal height where the second support point is located is greater than the horizontal height where the first support point is located. The present invention also discloses a softbox. The present invention arranges the limiting pressing portion on the positioning member, solving the problem that the socket is not easy to pry up the cover body.

Description

Technical Field

[0001] The present invention belongs to the technical field of photographic equipment, and in particular relates to a softbox chuck mechanism and a softbox. Background Art

[0002] When shooting, in order to make the light softer, photographers usually install a softbox in front of the photographic lamp, and the softbox has gradually evolved from the earliest umbrella structure with a support rod.

[0003] For example, Chinese Patent CN 103838060 discloses "A Quick-Folding Shadowless Cover with a Positioning Structure", which includes a positioning structure and a cover device. The positioning structure includes an annular body, a support member, a limiting member and a cover body. Through the cooperation of the cover body and the annular body, the limiting and pressing of the support member are realized.

[0004] Chinese Patent CN 203757314 discloses "A Quick-Fit Softbox Bracket", which is provided with a plurality of support rod interfaces on the bracket positioning member. Elastic support rods are provided on the support rod interfaces, and a limiting plate is further provided above the support rod interfaces. A support rod locking device is provided on the support rod interfaces, and the retraction and extension of the elastic support rods are controlled by the sliding of a reset member on the side.

[0005] Chinese Patent CN 102902134 discloses "A Folding Softbox", which realizes the locking or unlocking of the support rod sleeve through the translation of an arc-shaped substrate. The contact surface between the locking hook and the support rod sleeve is a plane, and the locking hook vertically supports the support rod sleeve upward. When it is necessary to retract the support rod sleeve, it is necessary to translate the arc-shaped substrate until the locking hook completely disengages from the support rod sleeve, and the arc-shaped substrate requires a large movement space in the horizontal direction.

[0006] The above several structures all use the hook part to limit the support rod of the softbox to realize its unfolding. It can also be found that in the above several patents, the limitation of the support rod is realized through the cooperation between the upper cover and the annular body.

[0007] Since in the actual use process, the softbox bracket with the above-mentioned structure of the hook part hanging on the support rod is easy to be damaged and has a short service life, a new structure has been developed. For example, Chinese Patent CN 209657063 discloses "A Portable Soft Light", which uses a locking mechanism to radially press the support bar.

[0008] However, the above several generations of softbox assembly structures are complex, and the pressing of the support bar can only be realized through the cooperation of the cover body and the mounting seat. After long-term use, the cover body and the mounting seat are prone to vertical separation, resulting in a shortened service life. Summary of the Invention

[0009] In order to overcome the deficiencies of the prior art, the present invention provides a softbox chuck mechanism and a softbox with a long service life, a simple and stable assembly structure.

[0010] The technical solution adopted by the present invention to solve its technical problems is: a soft light box chuck mechanism, including an annular positioning member, a plurality of sockets arranged circumferentially along the positioning member, and a locking mechanism for locking or unlocking the sockets.

[0011] The positioning member has a first outer diameter ring, a second outer diameter ring, and a third outer diameter ring.

[0012] The first outer diameter ring has a limit pressing portion for pressing the end of the socket.

[0013] The second outer diameter ring is located radially outside the first outer diameter ring, and the locking mechanism is provided.

[0014] The third outer diameter ring is located radially outside the second outer diameter ring and has a pressing section.

[0015] A slideway is formed between the first outer diameter ring and the second outer diameter ring, and the socket can enter the limit pressing portion from the slideway.

[0016] When unfolded, the axis of the socket is parallel to the radius of the positioning member. There are at least two first support points between the limit pressing portion and the socket, and a second support point between the pressing section and the socket. The first support points and the second support point enclose a triangle, and the horizontal height where the second support point is located is greater than the horizontal height where the first support point is located.

[0017] The present invention sets the limit pressing portion for pressing the end of the socket on the positioning member, solving the problem that the socket is likely to pry up the cover after long-term use; the assembly structure of the socket is simple, shortening the assembly time, and the structure is stable and effective after assembly; the slideway design between the first outer diameter ring and the second outer diameter ring facilitates the assembly of the socket; the limit pressing portion is located on the innermost first outer diameter ring, which can increase the torque, making the unfolding and folding operations of the socket more labor-saving; the first support points and the second support point form a stable triangular structure, and the height of the second support point is higher than that of the first support point, not only ensuring the stable assembly of the socket, but also the force borne by the socket can be dispersed as much as possible, ensuring the stability of the positioning member structure.

[0018] Further, an activity channel for the socket to rotate is formed on the positioning member. The slideway is formed by support portions located on both sides of the activity channel, and the support portions extend towards the direction of the first outer diameter ring. The limit pressing portion and the support portions press the socket from above and below.

[0019] Further, the activity channel is connected to the slideway. After the socket enters the activity channel from top to bottom, its end can translate along the slideway. The cooperation of the activity channel and the slideway solves the assembly problem of the socket, making the assembly simpler and the design more reasonable.

[0020] Furthermore, the limiting and pressing part includes pressing bumps located outside the supporting part, and the pressing bumps have openings in at least two directions. The pressing bumps are arranged on both sides to ensure uniform force on both sides of the socket, making the movement of the socket more stable during use and ensuring effective pressing on the socket.

[0021] Furthermore, a part of the limiting and pressing part and the supporting part overlap. After the socket passes through the movable channel from top to bottom, it can be radially translated into the space between the limiting and pressing part and the supporting part. The assembly process of the socket is simple, shortening the assembly time, and the structure is stable after assembly; the tight fit insertion of the socket avoids the up and down shaking of the socket.

[0022] Furthermore, a notch part for the rotating support shaft to extend into is formed at the non-overlapping part of the supporting part and the limiting and pressing part; a cover body is also included, and a filling convex part that can be inserted into the notch part is provided on the side of the cover body facing the positioning part. The setting of the notch part facilitates the insertion of the rotating support shaft, and the notch part is blocked by the filling convex part on the cover body, so that the socket will not generate radial offset, and the socket is firmly wrapped, with a stable structure.

[0023] Furthermore, the pressing section is arched. When the socket is unfolded, its outer wall abuts against the arched pressing section. The arched pressing section can not only effectively press the socket, disperse the pressure caused by the socket on the positioning part, avoid local damage to the positioning part, and extend the service life of the positioning part, but also has high strength, solves the deformation problem during the processing of the positioning part, and reduces the processing difficulty; the pressing section is arched, which limits the movement range of the socket, prevents the operating part of the locking mechanism from disengaging, and solves the assembly problem.

[0024] Furthermore, anti-detachment protrusions are provided on the limiting and pressing part, and the end of the socket has a rotating support shaft. The anti-detachment protrusions are used to prevent the rotating support shaft from radially detaching from the limiting and pressing part. The anti-detachment protrusions can prevent the rotating support shaft from detaching and ensure the stability of the socket after assembly.

[0025] Furthermore, the positioning part is made of a non-metallic material. The non-metallic material reduces the manufacturing cost of the positioning part.

[0026] Furthermore, the locking mechanism is arranged on the positioning part, and it at least includes a rotating shaft, a torsion spring connected to the rotating shaft, an operating part, and a locking surface arranged on the operating part. A groove for accommodating the rotating shaft is formed on the positioning part, and the locking surface abuts against the outer wall of the socket after passing through the side opening of the groove. The position design of the locking mechanism avoids the problem of the operating part falling off, realizes the self-locking of the operating part, and the overall assembly structure is stable and effective.

[0027] The present invention also discloses a soft light box, which includes an annular positioning member, a plurality of sockets arranged circumferentially along the positioning member, and a locking mechanism for locking or unlocking the sockets. The positioning member has a first outer diameter ring, a second outer diameter ring, and a third outer diameter ring; the first outer diameter ring has a limit pressing portion for pressing the end of the socket; the second outer diameter ring is located radially outside the first outer diameter ring and is provided with the locking mechanism; the third outer diameter ring is located radially outside the second outer diameter ring and has a pressing section; a slideway is formed between the first outer diameter ring and the second outer diameter ring, and the socket can enter the limit pressing portion from the slideway; when the socket is unfolded, the axis of the socket is parallel to the radius of the positioning member, there are at least two first support points between the limit pressing portion and the socket, there is a second support point between the pressing section and the socket, the first support points and the second support point enclose a triangle, and the horizontal height where the second support point is located is greater than the horizontal height where the first support point is located.

[0028] The beneficial effects of the present invention are as follows: The limit pressing portion for pressing the end of the socket is arranged on the positioning member, which solves the problem that the socket is likely to pry up the cover after long-term use. The assembly between the cover and the positioning member is stable, and the cover and the positioning member can be made of non-metallic materials such as plastic, reducing the manufacturing cost compared with metal materials; the assembly structure of the socket is simple, shortening the assembly time, and the structure is stable and effective after assembly; the slideway design between the first outer diameter ring and the second outer diameter ring facilitates the assembly of the socket; the limit pressing portion is located on the innermost first outer diameter ring, which can increase the torque and make the unfolding and folding operations of the socket more labor-saving; the first support points and the second support point form a stable triangular structure, and the height of the second support point is higher than that of the first support point, which not only ensures the stable assembly of the socket, but also can disperse the force borne by the socket as much as possible to ensure the stability of the structure of the positioning member; the cooperation of the movable channel and the slideway solves the assembly problem of the socket, the assembly is simpler and the design is more reasonable; the pressing bumps are arranged on both sides to ensure uniform force on both sides of the socket, making the movement of the socket more stable during use and ensuring effective pressing on the socket; the assembly process of the socket is simple, shortening the assembly time, and the structure is firm after assembly; the socket is tightly and fittingly inserted to avoid the up-and-down shaking of the socket; the notch is provided to facilitate the insertion of the rotating support shaft, and the notch is blocked by the filling convex portion on the cover, so that the socket will not generate radial offset, and the socket is firmly wrapped, with a firm structure; the arched pressing section can not only effectively press the socket, disperse the pressure caused by the socket on the positioning member, avoid local damage of the positioning member, extend the service life of the positioning member, but also has high strength, solves the deformation problem during the processing of the positioning member, and reduces the processing difficulty; the pressing section is arched, which limits the movement range of the socket, prevents the operating member of the locking mechanism from disengaging, and solves the assembly problem; the anti-detachment protrusion can prevent the rotating support shaft from detaching and ensure the stability of the socket after assembly. Description of the Drawings

[0029] Figure 1 This is a perspective view of the chuck mechanism in the present invention.

[0030] Figure 2 This is a schematic diagram of the exploded structure of the chuck mechanism in the present invention.

[0031] Figure 3 This is a perspective view of the chuck mechanism in the present invention excluding the cover.

[0032] Figure 4 This is a schematic diagram of the assembly structure of the cover and the rest in the present invention.

[0033] Figure 5 This is a front view of the chuck mechanism in the present invention excluding the socket.

[0034] Figure 6 It is Figure 5 the A - A cross - sectional view in

[0035] Figure 7 This is a perspective view of the cover in the present invention.

[0036] Figure 8 This is a perspective view of the positioning member in the present invention.

[0037] Figure 9 It is Figure 8 the enlarged view of the structure at B in

[0038] Figure 10 This is a schematic diagram of a partial assembly process of the socket and the positioning member in the present invention Figure 1 .

[0039] Figure 11 This is a schematic diagram of a partial assembly process of the socket and the positioning member in the present invention Figure 2 .

[0040] Figure 12 This is a schematic diagram of a partial assembly process of the socket and the positioning member in the present invention Figure 3 .

[0041] Figure 13 This is a schematic diagram of the assembly structure of a part of the locking mechanism and the positioning member and the socket in the present invention.

[0042] Figure 14 This is a schematic diagram of a partial structure of the socket in the unfolded state in the present invention.

[0043] Figure 15 This is a cross - sectional view of the mating structure of the socket in the unfolded state and the locking mechanism in the present invention.

[0044] Figure 16 This is a top view of the present invention (excluding the cover).

[0045] Figure 17Side view of the present invention (excluding the cover). Detailed implementation mode

[0046] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figure 1 、 Figure 2 shown, a soft light box chuck mechanism includes a positioning member 1 in the shape of a hollow circular ring, a cover body 2 in the shape of a hollow circular ring and spliced with the positioning member 1 up and down, a plurality of sockets 3 evenly arranged along the circumference of the positioning member 1, and a locking mechanism 4 for locking or unlocking the sockets 3.

[0048] As Figure 3 、 Figure 4 shown, the positioning member 1 has a certain thickness, the cover body 2 is in the shape of a plate, the cover body 2 and the positioning member 1 are spliced up and down to form a cavity 6, and a limiting pressing part 11, a supporting part 12 and a moving channel 5 are arranged in the cavity 6. More specifically, a limiting pressing part 11 is formed on the side of the positioning member 1 facing the cover body 2, and a supporting part 12 for mounting the socket 3. The moving channel 5 not only includes the part located in the cavity 6, but also can extend outside the cavity 6. In this embodiment, a part of the moving channel 5 extends along the radial direction of the positioning member 1, the supporting part 12 is located on both sides of the moving channel 5, and the moving channel 5 also includes the space below the positioning member 1 to ensure that the socket 3 can be rotated up and down to expand or fold up.

[0049] A part of the socket 3 can be clamped between the limiting pressing part 11 and the supporting part 12, so as to realize the up and down pressing of the socket 3. In other words, the fixing of the socket 3 is mainly realized by the limiting pressing part 11 and the supporting part 12 on the positioning member 1, rather than after the cover body 2 and the positioning member 1 are spliced up and down. Even after long-term use, the situation of the cover body 2 and the positioning member 1 being separated up and down will not occur.

[0050] The end of the socket 3 has a rotating pivot 31, that is to say, the socket 3 is in a T shape. The limiting and pressing part 11 includes a pressing bump 111 located outside the supporting part 12. The pressing bump 111 has openings 112 in at least two directions. Here, the openings 112 in two directions can ensure that the rotating pivot 31 translates radially into the space between the limiting and pressing part 11 and the supporting part 12. In order to ensure that the rotating pivot 31 is tightly fitted and clamped between the limiting and pressing part 11 and the supporting part 12, the vertical distance between the limiting and pressing part 11 and the supporting part 12 is approximately equal to the outer diameter of the rotating pivot 31.

[0051] In order to prevent the rotating pivot 31 from easily coming out after being clamped between the limiting and pressing part 11 and the supporting part 12, an anti - detachment protrusion 14 is provided on the limiting and pressing part 11. As Figure 8 、 9 shown, that is, a downward protrusion is formed on the surface of the pressing bump 111 facing the supporting part 12, which is used to prevent the rotating pivot 31 from radially detaching from the limiting and pressing part 11. Here, the radial direction refers to the radial direction of the positioning member 1.

[0052] Part of the limiting and pressing part 11 and the supporting part 12 overlap. Here, the overlap means that in the length direction of the supporting part 12, the two pressing bumps 111 are located on both sides of the supporting part 12, rather than on the extension line of the length direction of the supporting part 12. However, they do not completely overlap, so a notch part 15 is formed at the non - overlapping part of the supporting part 12 and the limiting and pressing part 11. When the socket 3 passes through the movable channel 5 from top to bottom, the rotating pivot 31 can extend into the notch part 15. And after the rotating pivot 31 abuts against the supporting part 12, the rotating pivot 31 can translate radially into the space between the limiting and pressing part 11 and the supporting part 12. In order to prevent the rotating pivot 31 from translating out, as Figure 7 shown, a filling protrusion 21 that can be inserted into the notch part 15 is provided on the side of the cover body 2 facing the positioning member 1. That is to say, as Figure 5 、 6 shown, after the cover body 2 and the positioning member 1 are assembled, the socket 3 is stably limited, the rotating pivot 31 will not translate and detach from the limiting and pressing part 11, nor will it shake, and the end of the socket 3 is completely wrapped.

[0053] In order to increase the torque, the limiting and pressing part 11 is arranged near the inner circle of the positioning member 1. On the outer edge of the positioning member 1, an arched pressing section 13 is formed above the movable channel 5. When the socket 3 is unfolded, the outer wall of the socket 3 abuts against the arched pressing section 13.

[0054] As Figures 10 - 12As shown in the figure, when the socket 3 and the positioning member 1 are assembled and connected, the lower end of the socket 3 passes through the movable channel 5 from top to bottom. After the rotating support shaft 31 enters from the notch 15, it is erected on the support portion 12. Then, an external force is applied to translate the socket 3 along the support portion 12 into the lower part of the limit pressing portion 11. The anti - detachment protrusion 14 prevents the rotating support shaft 31 from detaching from the limit pressing portion 11. Finally, through the assembly connection of the cover body 2 and the positioning member 1, the notch 15 is filled by the filling protrusion 21 on the cover body 2, so that the socket 3 is wrapped, ensuring that the socket 3 will not shift and ensuring the stability of the unfolding and folding activities of the socket 3.

[0055] As Figures 13 - 15 shown, the locking mechanism 4 at least includes a rotating shaft 41, a torsion spring 42 connected to the rotating shaft 41, an operating member 43, and a locking surface 431 provided on the operating member 43. A groove 16 for accommodating the rotating shaft 41 is formed on the positioning member 1. One side surface of the groove 16 facing the socket 3 forms an opening. A part of the operating member 43, especially the locking surface 431, passes through the side opening of the groove 16 and abuts against the outer wall of the socket 3.

[0056] Since the arched pressing section 13 applies a downward pressure to the socket 3 and the locking surface 431 of the operating member 43 abuts against the outer wall of the socket 3, the problem that the operating member 43 is easily detached is solved, and the assembly structure is stable and effective.

[0057] Both the positioning member 1 and the cover body 2 are made of non - metallic materials, with low manufacturing costs. Since the limit pressing portion 11 is located on the positioning member 1, it is not necessary to use the cover body 2 to cover and position the socket 3. After long - term use, there will be no separation phenomenon between the cover body 2 and the positioning member 1, and the service life is extended.

[0058] As Figure 16 shown, if it is defined that the positioning member 1 has a first outer - diameter ring 101, a second outer - diameter ring 102, and a third outer - diameter ring 103 distributed from the inside to the outside, then the above - mentioned limit pressing portion 11 is located at the position of the first outer - diameter ring 101, the locking mechanism 4 is located at the position of the second outer - diameter ring 102, and the pressing section 13 is located at the position of the third outer - diameter ring 103. A slideway 104 is formed between the first outer - diameter ring 101 and the second outer - diameter ring 102. The slideway 104 is formed by the overlapping part of the notch 15, the limit pressing portion 11, and the support portion 12.

[0059] The slideway 104 is communicated with the movable channel 5. During assembly, the lower end of the socket 3 enters the movable channel 5 from top to bottom. Then, its upper end, that is, the rotating support shaft 31, contacts the support portion 12 and translates along the slideway 104, which is convenient for assembly.

[0060] When the softbox is unfolded, the central axis of the socket 3 is parallel to the radial direction of the positioning member 1, and there are two first support points 71 between the limiting and pressing portion 11 and the socket 3, and there is a second support point 72 between the pressing section 13 and the socket 3. The two first support points 71 and the second support points 72 are arranged to form a triangle. Figure 17 As shown, the horizontal height of the second supporting point 72 is greater than the horizontal height of the first supporting point 71. In other words, the horizontal plane where the second supporting point 72 is located is H1, and the horizontal plane where the first supporting point 71 is located is H2, and H1 is higher than H2.

[0061] A soft box includes a positioning member 1 in the shape of a hollow circular ring, a cover body 2 in the shape of a hollow ring and assembled with the positioning member 1 from top to bottom, a plurality of support members (not shown) evenly spaced and arranged along the circumference of the positioning member 1, a reflective cloth in the shape of an umbrella held open by the plurality of support members, a socket 3 arranged at the end of the support member, and a locking mechanism 4 for locking or unlocking the socket 3. The positioning member 1 has a first outer diameter ring 101, a second outer diameter ring 102, and a third outer diameter ring 103 distributed from inside to outside, a limiting pressing portion 11 is provided at the position of the first outer diameter ring 101, the locking mechanism 4 is located at the second outer diameter ring 102, the third outer diameter ring 103 has a pressing section 13, a slideway 104 is formed between the first outer diameter ring 101 and the second outer diameter ring 102, and the socket 3 can enter the limiting pressing portion 11 from the slideway 104 to achieve the upper and lower pressing of the socket 3. When unfolded, the axis of the socket 3 is parallel to the radial direction of the positioning member 1, at least two first supporting points 71 are provided between the limiting and pressing portion 11 and the socket 3, and a second supporting point 72 is provided between the pressing section 13 and the socket 3. The first supporting points 71 and the second supporting points 72 are arranged to form a triangle, and the horizontal height of the second supporting point 72 is greater than the horizontal height of the first supporting point 71. Other specific structures are the same as the above structures and will not be repeated.

[0062] The above specific implementation modes are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A softbox chuck mechanism, comprising an annular positioning member (1), a plurality of sockets (3) arranged circumferentially along the positioning member (1), and a locking mechanism (4) for locking or unlocking the sockets (3). Characterized in that: The positioning member (1) has a first outer diameter ring (101), a second outer diameter ring (102), and a third outer diameter ring (103); The first outer diameter ring (101) has a limit pressing portion (11) to press the end of the socket (3); The second outer diameter ring (102) is located radially outside the first outer diameter ring (101), and the locking mechanism is provided; The third outer diameter ring (103) is located radially outside the second outer diameter ring (102) and has a pressing section (13); A slideway (104) is formed between the first outer diameter ring (101) and the second outer diameter ring (102), and the socket (3) can enter the limit pressing portion (11) from the slideway (104); When unfolded, the axis of the socket (3) is parallel to the radius of the positioning member (1). There are two first support points (71) between the limit pressing portion (11) and the socket (3), and a second support point (72) between the pressing section (13) and the socket (3). The first support point (71) and the second support point (72) enclose a triangle, and the horizontal height where the second support point (72) is located is greater than the horizontal height where the first support point (71) is located.

2. The softbox chuck mechanism according to claim 1, Characterized in that: An activity channel (5) for the socket (3) to rotate is formed on the positioning member (1). The slideway (104) is formed by support portions (12) located on both sides of the activity channel (5). The support portions (12) extend towards the direction of the first outer diameter ring (101), and the limit pressing portion (11) and the support portions (12) press the socket (3) from above and below.

3. The softbox chuck mechanism according to claim 2, Characterized in that: The activity channel (5) is communicated with the slideway (104). After the socket (3) enters the activity channel (5) from top to bottom, its end can translate along the slideway (104).

4. The softbox chuck mechanism according to claim 2, Characterized in that: The limit pressing portion (11) includes a pressing convex block (111) located outside the support portion (12), and the pressing convex block (111) has openings (112) in at least two directions.

5. The softbox chuck mechanism according to claim 4, Characterized in that: Part of the limit pressing portion (11) and the support portion (12) overlap. After the socket (3) passes through the activity channel (5) from top to bottom, it can translate radially into the space between the limit pressing portion (11) and the support portion (12).

6. The softbox chuck mechanism according to claim 5, Characterized in that: The non - overlapping part of the supporting part (12) and the limiting and pressing part (11) forms a notch part (15) for the rotating support shaft (31) to extend into; further comprising a cover body (2), and a filling convex part (21) that can be inserted into the notch part (15) is arranged on one side of the cover body (2) facing the positioning member (1).

7. The soft - light box chuck mechanism according to claim 1, characterized in that: The pressing section (13) is arched, and when the socket (3) is unfolded, its outer wall abuts against the arched pressing section (13).

8. The soft - light box chuck mechanism according to claim 1, characterized in that: An anti - detachment protrusion (14) is arranged on the limiting and pressing part (11), the end of the socket (3) has a rotating support shaft (31), and the anti - detachment protrusion (14) is used to prevent the rotating support shaft (31) from radially detaching from the limiting and pressing part (11).

9. The soft - light box chuck mechanism according to claim 1, characterized in that: The positioning member (1) is made of a non - metallic material.

10. The soft - light box chuck mechanism according to claim 1, characterized in that: The locking mechanism (4) is arranged on the positioning member (1), and it at least includes a rotating shaft (41), a torsion spring (42) connected to the rotating shaft (41), an operating member (43), and a locking surface (431) arranged on the operating member (43), a groove (16) for accommodating the rotating shaft (41) is formed on the positioning member (1), and the locking surface (431) abuts against the outer wall of the socket (3) after passing through the side opening of the groove (16).

11. A soft - light box, comprising an annular positioning member (1), a plurality of sockets (3) arranged circumferentially along the positioning member (1), and a locking mechanism (4) for locking or unlocking the sockets (3), characterized in that: The positioning member (1) has a first outer - diameter ring (101), a second outer - diameter ring (102), and a third outer - diameter ring (103); the first outer - diameter ring (101) has a limiting and pressing part (11) to press the end of the socket (3); the second outer - diameter ring (102) is located radially outside the first outer - diameter ring (101) and is provided with the locking mechanism; the third outer - diameter ring (103) is located radially outside the second outer - diameter ring (102) and has a pressing section (13); a slideway (104) is formed between the first outer - diameter ring (101) and the second outer - diameter ring (102), and the socket (3) can enter the limiting and pressing part (11) from the slideway (104); when the socket (3) is unfolded, the axis of the socket (3) is parallel to the radius of the positioning member (1), there are two first support points (71) between the limiting and pressing part (11) and the socket (3), there is a second support point (72) between the pressing section (13) and the socket (3), the first support point (71) and the second support point (72) enclose a triangle, and the horizontal height where the second support point (72) is located is greater than the horizontal height where the first support point (71) is located.

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