Anti-loosening holder and tripod for photography

Abstract

An anti-loosening holder for fixing a photographing device, the anti-loosening holder comprising a holder body (100) and a locking mechanism (200). The holder body (100) is provided with an insertion hole (110). The locking mechanism (200) comprises an abutting member (210) arranged on the holder body (100), a driving member (220) for driving the abutting member (210) to move towards the center of the insertion hole (110), and a locking member (230) for locking the movement of the abutting member (210). The anti-loosening holder helps to improve the stability of photographing devices. Also disclosed is a tripod for photography, the tripod for photography comprising the anti-loosening holder.

Description

Anti-falling support and photographic tripod TECHNICAL FIELD

[0001] The present application relates to the field of photographic tripods, in particular to an anti-falling support and a photographic tripod. BACKGROUND

[0002] With the progress of industrial level and the improvement of people's living standards, the use of photographic equipment such as cameras and video cameras in life is also becoming more and more popular.

[0003] In order to facilitate the adjustment of the height during shooting, the photographic equipment is generally fixed on a support (such as a tripod, etc.). The existing support is generally provided with a plug-in hole, and a locking sleeve is arranged in the plug-in hole. The mounting shaft on the photographic equipment is plugged into the plug-in hole, the angle of the photographic equipment is adjusted by adjusting the position of the mounting shaft in the plug-in hole, and the mounting shaft is fixed by using a locking structure.

[0004] The existing locking structure is generally a screw adjusting structure, the screw is screwed on the support, and the locking is achieved by rotating the screw and abutting the mounting shaft. This structure is locked by screwing only, and the screw is prone to looseness due to external vibration during use, thereby reducing the abutting force of the screw and the mounting shaft, so that the locking stability of the photographic equipment is not high.

[0005] SUMMARY

[0006] The main purpose of the present application is to provide an anti-falling support to solve the technical problems in the background art.

[0007] In order to achieve the above-mentioned purpose, the anti-falling support for fixing the photographic equipment is provided, which comprises a support body and a locking mechanism, the support body is provided with a plug-in hole, the locking mechanism comprises an abutting piece arranged on the support body, a driving piece for driving the abutting piece to move towards the center of the plug-in hole, and a locking piece for locking the movement of the abutting piece.

[0008] In some embodiments, the support body is provided with a first connecting hole communicating with the plug-in hole, the abutting piece comprises a column body, the column body comprises an abutting section, a first connecting section and a second connecting section in sequence, the abutting section is arranged towards the plug-in hole, the first connecting section is screwed in the first connecting hole, the driving piece is connected with the second connecting section and is used to drive the second connecting section to rotate, and the locking piece is used to limit the rotation of the abutting piece.

[0009] In some embodiments, the second connecting section is provided with at least one first guide edge along the axial direction of the first connecting hole, the driving member is a knob sleeved on the second connecting section, and the knob is provided with a first sliding groove matching the first guide edge, and the locking member comprises a first limiting structure arranged on the frame body and a second limiting structure arranged on the knob, the second limiting structure can be matched with the first limiting structure after the knob moves towards the insertion hole, so as to limit the rotation of the knob.

[0010] In some embodiments, the first limiting structure and the second limiting structure are toothed discs capable of being engaged with each other.

[0011] In some embodiments, the locking mechanism further comprises a first elastic member for driving the second limiting structure to move and be matched with the first limiting structure.

[0012] In some embodiments, the end of the second connecting section is provided with a baffle, the first elastic member is a spring sleeved on the second connecting section, and the two ends of the spring are connected with the baffle and the knob respectively.

[0013] In some embodiments, the insertion hole is provided with a flexible sleeve.

[0014] In some embodiments, the inner wall of the insertion hole is provided with a first mounting cavity in communication with the first connecting hole, and the first mounting cavity is provided with a push plate abutting against the outer side wall of the flexible sleeve.

[0015] In some embodiments, the flexible sleeve comprises a sleeve body and at least one abutting piece arranged at the end of the sleeve body, and the at least one abutting piece is abutted with the push plate.

[0016] In some embodiments, the frame body is provided with two insertion holes, and the frame body is provided with second mounting cavities in communication with the two insertion holes respectively, the abutting member is an elastic plate, the two ends of the elastic plate are respectively provided with abutting portions, the elastic plate is located in the second mounting cavities, and the two abutting portions are inserted into the two insertion holes respectively and correspondingly, the frame body is provided with a waist-shaped hole, the driving member comprises a movable column, a pull rod and a handle, the movable column is located in the waist-shaped hole and can move in the waist-shaped hole, one end of the pull rod is connected with the middle portion of the elastic plate, the other end of the pull rod is inserted into the waist-shaped hole and connected with the movable column, and the handle is rotationally connected with the movable column, the locking member comprises a first spacing adjustment portion arranged on the frame body and a second spacing adjustment portion arranged on the handle, the second spacing adjustment portion is provided with a first clamping position and a second clamping position, and the first spacing adjustment portion is abutted with the first clamping position and the second clamping position respectively, so as to limit the rotation of the handle.

[0017] In some embodiments, the locking member further comprises a second elastic member, which is a spring sleeved on the pull rod, and two ends of the spring are respectively in abutment with the elastic plate and the movable column.

[0018] In some embodiments, the first spacing adjustment part is a gear rotatably arranged on the frame body, the first clamping part is a large tooth head part capable of engaging with the gear, and the second clamping part is a small tooth head part capable of engaging with the gear.

[0019] In some embodiments, the elastic plate comprises a plate body and an adjustment sleeve, two abutment parts are respectively located at two ends of the plate body, a second connecting hole is arranged at a middle part of the plate body, one end of the pull rod passes through the second connecting hole and is connected with the adjustment sleeve, the pull rod is screwed with the adjustment sleeve or the movable column, and the adjustment sleeve is in abutment with the plate body.

[0020] In some embodiments, one end of the pull rod is screwed with the movable column, the other end of the pull rod is provided with a connecting head, at least one second guide edge is arranged on the connecting head, the adjustment sleeve is sleeved on the connecting head, a second sliding groove capable of being embedded with the second guide edge is arranged on the adjustment sleeve, a limiting recess is arranged in the second connecting hole, a limiting protrusion capable of being embedded in the limiting recess is arranged on the adjustment sleeve, the elastic plate further comprises a third elastic member, which is a spring sleeved on the connecting head and connected with the connecting head and the adjustment sleeve respectively, and one end of the second connecting hole close to the handle is provided with a blocking ring, and the adjustment sleeve is located in the second connecting hole and in abutment with the blocking ring.

[0021] The application further provides a photographic tripod, which comprises a anti-falling support for fixing a shooting device, the anti-falling support comprises a frame body and a locking mechanism, the frame body is provided with a inserting hole, the locking mechanism comprises an abutment member arranged on the frame body, a driving member for driving the abutment member to move towards the center of the inserting hole, and a locking member for locking the movement of the abutment member.

[0022] The anti-falling support provided by the embodiments of the application is advantageous in preventing the abutment member from moving after reaching the abutment position by locking the driving member with the locking member, thereby improving the stability of the support for fixing the shooting device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a structural schematic view of an embodiment of the anti-falling support in the application;

[0024] Fig. 2 is a sectional view of the anti-falling support shown in Fig. 1;

[0025] Fig. 3 is a structural schematic view of the abutment member shown in Fig. 3;

[0026] Fig. 4 is a sectional view of the locking mechanism shown in Fig. 1;

[0027] Fig. 5 is a structural schematic diagram of the locking member shown in Fig. 2;

[0028] Fig. 6 is a structural schematic diagram of the driving member shown in Fig. 4;

[0029] Fig. 7 is a structural schematic diagram of the flexible sleeve and the push plate shown in Fig. 2;

[0030] Fig. 8 is a structural schematic diagram of another embodiment of the anti-disengagement support in the present application;

[0031] Fig. 9 is a structural schematic diagram of the frame shown in Fig. 8;

[0032] Fig. 10 is a sectional view of the anti-disengagement support shown in Fig. 8;

[0033] Fig. 11 is a structural schematic diagram of the plate body shown in Fig. 10;

[0034] Fig. 12 is a structural schematic diagram of the locking member and the handle shown in Fig. 10;

[0035] Fig. 13 is a structural schematic diagram of the pull rod shown in Fig. 10;

[0036] Fig. 14 is a structural schematic diagram of the adjusting sleeve shown in Fig. 10. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0038] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0039] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or can have a middle element.

[0040] In addition, the descriptions involving "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0041] The application provides a kind of anti-falling support, for fixing photographic equipment.As shown in Figure 1 and Figure 2, the anti-falling support includes frame body 100 and locking mechanism 200.Frame body 100 has insertion hole 110.Locking mechanism 200 includes abutting member 210 arranged on frame body 100, driving member 220 for moving abutting member 210 towards the center of insertion hole 110, and locking member 230 for locking the movement of abutting member 210.Among them, frame body 100 can be set with reference to the existing tripod, the shape and size of insertion hole 110 can adopt general specification, so as to be applicable to conventional photographic equipment.Insertion hole 110 is used to install mounting shaft connected with photographic equipment, and the angle of photographic equipment is adjusted by adjusting the angle of mounting shaft in insertion hole 110.Abutting member 210 can be directly arranged in insertion hole 110, or arranged on the periphery of insertion hole 110, and fixed by abutting the part of mounting shaft inserted into insertion hole 110.Driving member 220 can directly drive abutting member 210 to move to change the position of abutting member 210, or indirectly drive abutting member 210 to move to change the position of abutting member 210, so that abutting member 210 can abut with the part of mounting shaft inserted into insertion hole 110.Locking member 230 can limit the movement of abutting member 210 when driving member 220 drives abutting member 210 to the abutting position by conventional means, such as using a latch, a stop block, etc., or by limiting the movement of driving member 220 to limit the movement of abutting member 210.In the embodiment, by locking abutting member 210 with locking member 230, it is beneficial to prevent abutting member 210 from moving after reaching the abutting position, thereby improving the stability of the support for fixing photographic equipment.

[0042] In some embodiments, as shown in FIG. 2 and FIG. 3, the frame 100 is provided with a first connecting hole 120a which is in communication with the insertion hole 110. The abutting member 210 comprises a column 211a. The column 211a comprises, in sequence, an abutting section 212a, a first connecting section 213a and a second connecting section 214a. The abutting section 212a is arranged towards the insertion hole 110, and the first connecting section 213a is screwed into the first connecting hole 120a. The driving member 220 is connected with the second connecting section 214a and is used to drive the second connecting section 214a to rotate. The locking member 230 is used to limit the rotation of the driving member 220. In some embodiments, the extension direction of the first connecting hole 120a is arranged perpendicularly to the extension direction of the insertion hole 110, and the first connecting hole 120a is provided with a screw thread. The abutting section 212a can be used to abut against the part of the shooting device which is inserted into the insertion hole 110. The first connecting section 213a is provided with a screw thread so as to facilitate the screwing of the first connecting section 213a into the first connecting hole 120a. The position of the abutting section 212a can be changed by rotating the second connecting section 214a, i.e. the locking and releasing of the part of the shooting device which is inserted into the insertion hole can be realized. The driving member 220 drives the second connecting section 214a to rotate, thereby facilitating the movement of the abutting section 212a in a rotating manner. The locking member 230 limits the rotation of the driving member 220 when the abutting section 212a reaches the abutting position.

[0043] In some embodiments, as shown in FIG. 3 to FIG. 6, the second connecting section 214a is provided with at least one first guide edge 215a along the axial direction of the first connecting hole 120a. The driving member 220 is a knob which is sleeved on the second connecting section 214a, and the knob is provided with a first sliding groove 221a which is fitted with the first guide edge 215a. The locking member 230 comprises a first limiting structure 231a which is arranged on the frame 100 and a second limiting structure 232a which is arranged on the knob. The knob is used to drive the second limiting structure 232a to move towards the first limiting structure 231a and to abut against the first limiting structure 231a so as to limit the rotation of the knob. In some embodiments, the second connecting section 214a is a polygonal prism, and the knob is provided with a first sliding groove 221a which is matched with the prism, thereby limiting the knob to slide only along the length direction of the second connecting section 214a and to rotate the second connecting section 214a. When locking is needed, the second locking structure is separated from the first locking structure by sliding the knob, and then the second connecting section 214a is rotated, thereby changing the position of the abutting section 212a and realizing the locking and releasing. After the locking is completed, the second limiting structure 232a is abutted against the first limiting structure 231a by sliding the knob, thereby preventing the rotation of the knob.

[0044] In some embodiments, as shown in FIG. 2 and FIG. 5, the first limiting structure 231a and the second limiting structure 232a are both toothed discs which can be engaged with each other, and the number of teeth of the toothed discs can be set according to actual conditions, and the rotation of the knob can be limited by the engagement of the two toothed discs. In some embodiments, the toothed discs are provided with through holes to facilitate the passage of the column 211a to provide a space for avoiding collision.

[0045] In some embodiments, as shown in FIG. 2 and FIG. 4, the locking mechanism 200 further comprises a first elastic member 240a for driving the second limiting structure 232a to move and abut against the first limiting structure 231a. In some embodiments, the first elastic member 240a is a spring, and the end of the second connecting segment 214a is provided with a baffle 216a, the spring is sleeved on the second connecting segment 214a, and the two ends of the spring are connected with the baffle 216a and the knob respectively, so that the second limiting structure 232a can be automatically abutted against the first limiting structure 231a under the elastic force of the spring after the knob is pulled to move, and the locking of the knob is realized.

[0046] In some embodiments, as shown in FIG. 2 and FIG. 7, the flexible sleeve 130a is arranged in the insertion hole 110, so as to avoid the hard contact between the part of the shooting device inserted into the insertion hole 110 and the inner wall of the insertion hole 110, and the abutting segment 212a can also effectively avoid damaging the part of the shooting device inserted into the insertion hole 110 by abutting against the outer side wall of the flexible sleeve 130a.

[0047] In some embodiments, as shown in FIG. 2 and FIG. 7, the inner wall of the insertion hole 110 is provided with a first mounting cavity 150a which is in communication with the first connecting hole 120a, and the first mounting cavity 150a is provided with a push plate 140a which abuts against the outer side wall of the flexible sleeve 130a. In some embodiments, the push plate 140a is in the shape of an arc-shaped sheet, and the push plate 140a can be directly bonded on the outer side wall of the flexible sleeve 130a, and at this time, the abutting segment 212a can abut against the part of the shooting device inserted into the insertion hole 110 by pushing the push plate 140a to move, which is conducive to increasing the contact area, so as to further improve the stability of the fixation.

[0048] In some embodiments, as shown in FIG. 7, the flexible sleeve 130a comprises a sleeve body 131a and at least one abutting sheet 132a arranged at the end of the sleeve body 131a, and the at least one abutting sheet 132a abuts against the push plate 140a. In some embodiments, the abutting sheet 132a is three, which are arranged at the lower end of the sleeve body 131a in a spaced manner, and one of the abutting sheets 132a is arranged in close contact with the push plate 140a, so as to facilitate the abutting sheet 132a to abut against the part of the shooting device inserted into the insertion hole 110 when the abutting segment 212a pushes the push plate 140a to move.

[0049] In some embodiments, the existing shooting device has two mounting shafts, in order to facilitate the fixing of the shooting device, as shown in FIG. 8, in some embodiments, the frame 100 has two insertion holes 110, which are arranged at a predetermined distance on the frame 100, respectively for the insertion of the two mounting shafts.

[0050] As shown in FIGS. 9-11, the frame 100 is provided with a second mounting cavity 120b in communication with the two insertion holes 110, respectively, and the abutting member 210 is an elastic plate, both ends of which are provided with an abutting portion 211b, which is an arc surface matched with the mounting shaft, so as to increase the abutting area and improve the fastening strength. The elastic plate is located in the second mounting cavity 120b, and the two abutting portions 211b are respectively inserted into the two insertion holes 110 one by one.

[0051] As shown in FIGS. 8, 9 and 10, the frame 100 is provided with a waist-shaped hole 130b. The driving member 220 includes a movable column 221b, a pull rod 222b and a handle 223b. The movable column 221b is located in the waist-shaped hole 130b and can move in the waist-shaped hole 130b. One end of the pull rod 222b is connected to the middle part of the elastic plate, and the other end is inserted into the waist-shaped hole 130b and connected to the movable column 221b. The handle 223b is rotationally connected to the movable column 221b. By pulling the movable column 221b in the waist-shaped hole 130b through the handle 223b, the elastic plate is deformed by pulling the pull rod 222b, so that the abutting portion 211b is separated from the mounting shaft located in the insertion hole 110, thereby adjusting the height of the shooting device.

[0052] As shown in FIG. 12, the locking member 230 includes a first spacing adjusting portion 231b arranged on the frame 100 and a second spacing adjusting portion 232b arranged on the handle 223b. The second spacing adjusting portion 232b has a first clamping position 233b and a second clamping position 234b. The first spacing adjusting portion 231b is in abutment with the first clamping position 233b and the second clamping position 234b, respectively, for limiting the rotation of the handle 223b. The first clamping position 233b and the second clamping position 234b can be cavities of different depths. During the rotation of the handle 223b, the first spacing adjusting portion 231b can be locked in the first clamping position 233b and the second clamping position 234b, respectively, so as to drive the movable column 221b to move in the waist-shaped hole 130b to deform the elastic plate, and finally control the abutting portion 211b to abut and separate from the mounting shaft located in the insertion hole 110.

[0053] In some embodiments, as shown in FIG. 10, the locking member 230 further comprises a second elastic member 235b. The second elastic member 235b is a spring sleeved on the pull rod 222b, and the two ends of the spring are respectively in abutment with the elastic plate and the movable column 221b. The elastic force of the spring is used to push the movable column 221b to move, so that the first spacing adjusting part 231b can be more stably locked on the first clamping position 233b or the second clamping position 234b, and the locked state is preferably the state that the abutment part 211b is in abutment with the mounting shaft in the plug-in hole 110, so as to further improve the stability during locking.

[0054] In some embodiments, as shown in FIG. 12, the first spacing adjusting part 231b is a gear rotatably arranged on the frame 100, the first clamping position 233b is a large tooth head part capable of engaging with the gear, and the second clamping position 234b is a small tooth head part capable of engaging with the gear. In some embodiments, the first clamping position 233b and the second clamping position 234b are an integral arc-shaped plate, and the arc-shaped surface of the arc-shaped plate is provided with a tooth head. The characteristic that the distance between each part of the arc-shaped surface of the arc-shaped plate and the rotation center of the handle 223b gradually increases, so that the movable column 221b can be moved in the waist-shaped hole 130b during the rotation of the handle 223b.

[0055] In some embodiments, as shown in FIG. 10, the elastic plate comprises a plate body 212b and an adjusting sleeve 213b. The two abutment parts 211b are respectively located at the two ends of the plate body 212b, the middle part of the plate body 212b is provided with a second connecting hole 214b, one end of the pull rod 222b passes through the second connecting hole 214b and is connected with the adjusting sleeve 213b, the pull rod 222b is screwed with the adjusting sleeve 213b or the movable column 221b, and the adjusting sleeve 213b is in abutment with the plate body 212b. In some embodiments, the pull rod 222b is provided with threads, and the length of the pull rod 222b screwed is changed by rotating the adjusting sleeve 213b to drive the pull rod 222b to rotate, so as to adjust the abutment force of the abutment part 211b and the mounting shaft in the plug-in hole 110, thereby facilitating the fastening of different thick and thin mounting shafts.

[0056] In some embodiments, as shown in FIG. 11, FIG. 13 and FIG. 14, one end of the pull rod 222b is screwed with the movable column 221b, and the other end of the pull rod 222b is provided with a connecting head 224b. The connecting head 224b is provided with a second guide edge 225b, specifically a polygonal prism. The adjusting sleeve 213b is sleeved on the connecting head 224b, and the adjusting sleeve 213b is provided with a second sliding groove 215b, specifically a polygonal hole, which is embedded with the second guide edge 225b. The second connecting hole 214b is provided with a limiting concave cavity 216b, and the adjusting sleeve 213b is provided with a limiting protrusion 217b which can be embedded in the limiting concave cavity 216b. In some embodiments, the limiting protrusion 217b and the limiting concave cavity 216b are both multiple. The elastic plate further comprises a third elastic member 218b, which is a spring sleeved on the connecting head 224b and connected with the connecting head 224b and the adjusting sleeve 213b respectively. The second connecting hole 214b is provided with a blocking ring 219b near one end of the handle 223b, and the adjusting sleeve 213b is located in the second connecting hole 214b and abuts against the blocking ring 219b, so that the adjusting sleeve 213b continuously abuts against the plate body 212b. Wherein, by sliding the adjusting sleeve 213b on the connecting head 224b, the limiting concave cavity 216b and the limiting protrusion 217b can be separated, and the rotation of the adjusting sleeve 213b is realized. After releasing the adjusting sleeve 213b, the elastic force of the third elastic member 218b can drive the adjusting sleeve 213b to move, so that the limiting protrusion 217b is embedded in the limiting concave cavity 216b, and the locking of the adjusting sleeve 213b is realized, preventing the adjusting sleeve 213b from rotating.

[0057] The application further provides a photographic tripod, which comprises the anti-disengagement support in the above embodiments. The specific structure of the anti-disengagement support is referred to the above embodiments. Since the photographic tripod adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0058] The above is only part or preferred embodiments of the application, neither the text nor the drawings can limit the scope of protection of the application, any equivalent structural transformation made by using the content of the specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the application.

Claims

1. A fall-preventing support for fixing a photographing device, wherein, The anti-falling support comprises a support body and a locking mechanism, the support body is provided with an inserting hole, the locking mechanism comprises an abutting piece arranged on the support body, a driving piece for driving the abutting piece to move towards the center of the inserting hole, and a locking piece for locking the movement of the abutting piece.

2. The anti-migration stent of claim 1, wherein, The support body is provided with a first connecting hole in communication with the inserting hole, the abutting piece comprises a column body, the column body comprises an abutting section, a first connecting section and a second connecting section in sequence, the abutting section is arranged towards the inserting hole, the first connecting section is screwed into the first connecting hole, the driving piece is connected with the second connecting section and is used for driving the second connecting section to rotate, and the locking piece is used for limiting the rotation of the abutting piece.

3. The anti-migration stent of claim 2, wherein, At least one first guide edge is arranged on the second connecting section along the axial direction of the first connecting hole, the driving piece is a knob sleeved on the second connecting section, the knob is provided with a first sliding groove matched with the first guide edge, the locking piece comprises a first limiting structure arranged on the support body and a second limiting structure arranged on the knob, and the second limiting structure is matched with the first limiting structure after the knob moves towards the inserting hole, so as to limit the rotation of the knob.

4. The anti-migration stent of claim 3, wherein, The first limiting structure and the second limiting structure are intermeshing tooth discs.

5. The anti-migration stent of claim 3, wherein, The locking mechanism further comprises a first elastic piece for driving the second limiting structure to move and be matched with the first limiting structure.

6. The anti-migration stent of claim 5, wherein, The end of the second connecting section is provided with a baffle, the first elastic piece is a spring sleeved on the second connecting section, and the two ends of the spring are connected with the baffle and the knob respectively.

7. The anti-dehiscence support of claim 2, wherein, A flexible sleeve is arranged in the inserting hole.

8. The anti-dehiscence support of claim 7, wherein, A first installation cavity in communication with the first connecting hole is arranged on the inner wall of the inserting hole, and a push plate abutting against the outer side wall of the flexible sleeve is arranged in the first installation cavity.

9. The anti-migration stent of claim 8, wherein, The flexible sleeve comprises a sleeve body and at least one abutting piece arranged at the end of the sleeve body, and the at least one abutting piece abuts against the push plate.

10. The anti-dehiscence support of claim 1, wherein, The support body is provided with two inserting holes, the support body is provided with second installation cavities in communication with the two inserting holes respectively, the abutting piece is an elastic plate, the two ends of the elastic plate are respectively provided with an abutting part, the elastic plate is located in the second installation cavities, and the two abutting parts are inserted into the two inserting holes respectively one by one; the support body is provided with a waist-shaped hole, the driving piece comprises a movable column, a pull rod and a handle, the movable column is located in the waist-shaped hole and can move in the waist-shaped hole, one end of the pull rod is connected with the middle part of the elastic plate, the other end of the pull rod penetrates into the waist-shaped hole and is connected with the movable column, and the handle is rotationally connected with the movable column; the locking piece comprises a first spacing adjusting part arranged on the support body and a second spacing adjusting part arranged on the handle, the second spacing adjusting part is provided with a first clamping position and a second clamping position, and the first spacing adjusting part abuts against the first clamping position and the second clamping position respectively, so as to limit the rotation of the handle.

11. The anti-migration stent of claim 10, wherein, The locking member further comprises a second elastic member, which is a spring sleeved on the pull rod, and two ends of the spring are respectively in abutment with the elastic plate and the movable column.

12. The anti-migration stent of claim 11, wherein, The first spacing adjusting part is a gear rotatably arranged on the frame body, the first clamping position is a large tooth head part capable of engaging with the gear, and the second clamping position is a small tooth head part capable of engaging with the gear.

13. The anti-migration stent of claim 12, wherein, The elastic plate comprises a plate body and an adjusting sleeve, two abutment parts are respectively arranged at two ends of the plate body, a second connecting hole is arranged at a middle part of the plate body, one end of the pull rod passes through the second connecting hole and is connected with the adjusting sleeve, the pull rod is screwed with the adjusting sleeve or the movable column, and the adjusting sleeve is in abutment with the plate body.

14. The anti-migration stent of claim 13, wherein, One end of the pull rod is screwed with the movable column, the other end of the pull rod is provided with a connecting head, at least one second guide edge is arranged on the connecting head, the adjusting sleeve is sleeved on the connecting head, a second sliding groove capable of being embedded with the second guide edge is arranged on the adjusting sleeve, a limiting recess is arranged in the second connecting hole, a limiting protrusion capable of being embedded in the limiting recess is arranged on the adjusting sleeve, the elastic plate further comprises a third elastic member, the third elastic member is a spring sleeved on the connecting head and connected with the connecting head and the adjusting sleeve, one end of the second connecting hole close to the handle is provided with a blocking ring, and the adjusting sleeve is arranged in the second connecting hole and in abutment with the blocking ring.

15. A photographic tripod, wherein, The anti-disengagement stent comprises the anti-disengagement stent according to any one of claims 1-14. The anti-disengagement stent comprises the anti-disengagement stent according to any one of claims 1-14.

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