Telescopic bracket and interlocking mechanism

Abstract

A telescopic bracket and an interlocking mechanism. The interlocking mechanism comprises drive rods (30) and at least two locking structures (40), wherein the locking structures (40) are configured to lock or unlock two slidably sleeved branch pipes, and each locking structure (40) comprises a locking housing (41), a rotating member and a movable member; each locking housing (41) is provided with a branch pipe hole (411), through which the branch pipe passes, and a drive hole (412), through which the drive rod passes, and each locking housing (41) is configured to be fixedly connected to one branch pipe; each rotating member is sleeved on the corresponding drive rod and configured to rotate along with the corresponding drive rod; and each movable member is arranged on the corresponding locking housing (41) and is connected to one of the corresponding rotating member and the corresponding drive rod, each movable member is driven to move between a first position and a second position, the other branch pipe is locked when the movable members are located at first positions, and the other branch pipe is unlocked when the movable members are located at second positions. The interlocking mechanism can perform drive to lock or unlock a plurality of slidably sleeved branch pipes, thereby improving the locking and unlocking convenience for the telescopic bracket.

Description

Telescopic bracket and interlocking mechanism

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 19, 2023, with application number CN202323482550.5 and utility model name “Telescopic Bracket and Interlocking Mechanism”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of brackets, and in particular to a telescopic bracket and an interlocking mechanism. Background Art

[0003] Existing telescopic brackets typically include three or more slidably connected branch tubes, with each pair of slidably connected branch tubes requiring a locking mechanism to lock or unlock. This means that a telescopic bracket requires at least two sets of locking mechanisms, requiring each locking mechanism to be locked or unlocked individually when extending or retracting the bracket, which is somewhat inconvenient.

[0004] Summary of the Invention

[0005] An interlocking mechanism includes a driving rod and at least two sets of locking structures; the locking structures are used to lock or unlock two branch pipes that are slidably connected, and the locking structures include:

[0006] The locking housing is provided with a branch pipe hole for the branch pipe to pass through and a drive hole for the drive rod to pass through, and the locking housing is used to be fixedly connected to one of the branch pipes;

[0007] A rotating member, sleeved on the driving rod and configured to rotate along with the driving rod;

[0008] The movable member is provided in the locking housing and connected to one of the rotating member and the driving rod. The movable member is driven to move between a first position and a second position. When the movable member is in the first position, the other branch pipe is locked. When the movable member is in the second position, the other branch pipe is unlocked.

[0009] A telescopic bracket comprises at least one leg and the above-mentioned interlocking mechanism, wherein the leg comprises a first branch tube, a second branch tube, and a third branch tube, wherein the first branch tube and the second branch tube are slidably sleeved together, and the second branch tube and the third branch tube are slidably sleeved together; and the locking structure is provided between the first branch tube and the second branch tube, and between the second branch tube and the third branch tube.

[0010] The present application utilizes a locking structure to connect two slidably sleeved branch pipes, wherein the branch pipes pass through the branch pipe hole of the locking housing. The locking housing and one of the two slidably sleeved branch pipes are fixedly connected, and the movable member locks or unlocks the other of the two slidably sleeved branch pipes by moving between a first position and a second position. The driving rod passes through the driving hole of the locking structure, and the rotating member is circumferentially fixed relative to the driving rod, that is, the rotating member can rotate with the driving rod, thereby directly or indirectly driving the movable member to move between the first position and the second position. The provision of the driving hole and the driving rod ensures that the driving rod can simultaneously connect to the rotating members of multiple locking structures, thereby simultaneously driving multiple locking structures to lock or unlock the mutually slidably sleeved branch pipes, thereby improving the convenience of locking and unlocking the telescopic bracket using the interlocking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] FIG1 is a schematic diagram of a telescopic bracket using an interlocking mechanism according to an embodiment of the present application;

[0014] FIG2 is an exploded view of the interlocking mechanism provided in the first embodiment of the present application at the locking structure;

[0015] FIG3 is an exploded view of the interlocking mechanism at the locking structure provided in the third embodiment of the present application;

[0016] FIG4 is a schematic diagram of FIG3 from another perspective;

[0017] FIG5 is an exploded view of the interlocking mechanism provided in the fourth embodiment of the present application at the locking structure;

[0018] FIG6 is an exploded view of the interlocking mechanism provided in the second embodiment of the present application at the locking structure;

[0019] FIG7 is a cross-sectional view of the interlocking mechanism provided in the second embodiment of the present application at the locking structure.

[0020] Description of reference numerals:

[0021] 10-fixed frame; 20-handle member; 30-drive rod; 40-locking structure; 41-locking shell; 411-branch pipe hole; 412-drive hole; 413-blocking wall; 414-first avoidance hole; 42-cam; 43-locking ring; 431-notch portion; 432-locking plate; 4321-second avoidance hole; 4322-third avoidance hole; 44-drive slider; 441-first push block; 4411-fourth avoidance hole; 442-second push block; 443-adjusting hole; 45-drive connecting rod; 46-drive pressure block; 47-pin shaft; 48-eccentric member; 49-winding wheel; 491-traction rope; 492-top block; 50-first branch pipe; 60-second branch pipe; 70-third branch pipe; 80-adjusting bolt; 81-butt portion; 82-threaded portion. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0024] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0025] In order to solve the technical problem of inconvenient locking and unlocking of the telescopic bracket in the prior art, the present application provides a telescopic bracket and an interlocking mechanism, which can simultaneously drive multiple branches that are slidably connected to each other to lock or unlock, greatly improving the convenience of locking and unlocking the telescopic bracket and improving the user experience.

[0026] The interlocking mechanism provided in the embodiment of the present application is shown in Figures 1 and 2. The interlocking mechanism includes a drive rod 30 and at least two sets of locking structures 40. Each set of locking structures 40 is used to lock or unlock two branches of the sliding sleeve. The drive rod 30 connects multiple sets of locking structures 40 and is used to drive multiple sets of locking structures 40 to switch to a locked state or an unlocked state at the same time. When two sets of interlocking mechanisms are provided, the interlocking mechanism can lock and unlock the three branches of the sliding sleeve at one time. Each locking structure 40 includes at least three parts: a locking shell 41, a rotating part, and a movable part. For different locking and unlocking structures, it may also include other parts. The locking and unlocking principles of the locking structure 40 will be explained below with different embodiments.

[0027] The locking housing 41 has branch pipe holes 411 and drive holes 412 formed through its upper and lower surfaces. The branch pipe holes 411 and drive holes 412 are arranged generally parallel to each other. The branch pipe holes 411 are used to allow the two sliding branch pipes to pass through, while the drive hole 412 is used to allow the drive rod 30 to pass through. The rotating member is sleeved on the drive rod 30 and rotates under the drive rod 30. The movable member is disposed within the locking housing 41. One of the rotating member and the drive rod 30 is connected to the movable member, thereby directly or indirectly driving the movable member to move between a first position and a second position by virtue of the rotation of the rotating member. One of the two sliding branch pipes is fixedly connected to the locking housing 41, and the other branch pipe is locked or unlocked by the movable member. When the movable member is in the first position, the other branch pipe is locked; when the movable member moves to the second position, the branch pipe is unlocked.

[0028] First embodiment

[0029] Referring to FIG. 2 , in this embodiment, the drive rod 30 is a square tube, and the rotating member is a cam 42. The cam 42 is fixedly connected to the drive rod 30 and can rotate with the drive rod 30. The movable member is arranged in contact with the cam 42 and is slidably connected to the locking housing 41. During the rotation of the cam 42, the movable member is driven toward or away from the branch pipe hole 411. Specifically, the locking structure 40 also includes a locking ring 43. The locking ring 43 has an upper half and a lower half that are connected to each other. The upper half is connected to the locking housing 41 and is relatively fixed to one of the two slidably connected branches by an interference fit. The lower half has a reserved notch 431 that is connected to the other of the two slidably connected branches to lock or unlock the branch pipe.

[0030] The notch 431 is connected to locking plates 432 at both ends. The pair of locking plates 432 connected at both ends of the notch 431 are arranged substantially parallel to each other. When the locking plates 432 approach each other, the notch 431 contracts to lock the branch pipe; when the locking plates 432 separate from each other, the notch 431 opens to slide and unlock the branch pipe. The movable member is a drive slider 44 that slides between the cam 42 and one set of locking plates 432. When the drive rod 30 rotates and drives the cam 42 to rotate, the rim of the cam 42 farthest from the axis of the drive rod 30 abuts the drive slider 44, pressing the drive slider 44 toward the locking plates 432. The notch 431 tightens to lock the branch pipe. At this time, the drive slider 44 is in the first position. When the driving rod 30 rotates and drives the cam 42 to rotate, the rim of the cam 42 closer to the axis of the driving rod 30 presses against the driving slider 44, releasing the pressure on the driving slider 44. Driven by the restoring elastic force of the notch 431 and the locking plate 432, the notch 431 opens to unlock the branch pipe, and the driving slider 44 returns to the second position.

[0031] Furthermore, a sliding guide mechanism may be provided between the driving slider 44 and the locking housing 41 to guide the driving slider 44 in a sliding manner, thereby ensuring that the driving slider 44 moves in the direction from the first position to the second position. For example, the sliding guide mechanism may include a guide rail provided on the locking housing 41 and a guide groove provided on a side of the driving slider 44 that contacts the locking housing 41.

[0032] Second embodiment

[0033] On the basis of the first embodiment, referring to Figures 6 and 7, in order to adjust the gap between the driving slider 44 and the cam 42, in this embodiment, the locking structure 40 further includes an adjusting bolt 80, the driving slider includes a first pushing block 441 and a second pushing block 442, the second pushing block 442 abuts against the cam, the first pushing block 441 is located between the second pushing block 442 and the locking plate, and is connected to the first pushing block 441; the second pushing block 442 is provided with an adjusting hole 443 on a side away from the cam 42, and the adjusting hole 443 is a threaded hole; the adjusting bolt 80 is passed through the adjusting hole 443, has an external thread, and is threadedly connected to the adjusting hole 443; the adjusting bolt 80 is provided with an operating hole;

[0034] The locking shell 41 is provided with a first avoidance hole 414, and the two locking plates are respectively provided with a second avoidance hole 4321 and a third avoidance hole 4322; the first pushing block 441 is provided with a fourth avoidance hole 4411; the first avoidance hole 414, the second avoidance hole 4321, the third avoidance hole 4322, the fourth avoidance hole 4411 and the operating hole are correspondingly arranged.

[0035] The locking structure 40 also includes an operating lever, which is inserted through the first, second, third, and fourth clearance holes 414, 4321, 4322, and 4411. One end of the operating lever is inserted into the operating hole of the adjustment bolt 80, and the other end of the operating lever extends outside the drive housing 41. This allows a user to directly adjust the adjustment bolt 80 using the operating lever. Specifically, the operating lever is inserted through the first, second, third, and fourth clearance holes 414, 4321, 4322, and 4411, and then inserted into the operating hole of the adjustment bolt 80. Rotating the operating lever drives the adjustment bolt 80, allowing the adjustment bolt 80 to adjust the gap between the drive slider and the cam, thereby adjusting the locking force of the locking ring on the branch pipe.

[0036] Furthermore, the operating hole is a polygonal hole. In this embodiment, the operating hole is a hexagonal hole. It is understandable that designing the operating hole as a polygonal hole can facilitate the adjustment operation of the adjusting bolt 80.

[0037] Furthermore, the adjustment hole 443 includes a limiting hole and a connecting hole. The limiting hole is a groove formed on the side of the second pushing block 442 facing the first pushing block 441. The connecting hole is recessed at the bottom of the limiting hole and is a threaded hole.

[0038] The adjusting bolt 80 includes an abutment portion 81 and a threaded portion 82. The abutment portion 81 is connected to the threaded portion 82, which has external threads. The threaded portion 82 passes through the connecting hole and is threadedly connected to the connecting hole. The abutment portion 81 is received in the limiting hole and abuts against the bottom wall of the limiting hole. An operating hole is provided on the side of the abutment portion 81 facing away from the bolt portion.

[0039] The limiting hole serves to limit the adjusting bolt 80 , and the abutment portion 81 is pressed against the bottom wall of the limiting hole, which can increase the friction between the abutment portion 81 and the bottom wall of the limiting hole, thereby improving the connection stability between the adjusting bolt 80 and the second pushing block 442 .

[0040] Third embodiment

[0041] Referring to Figures 3 and 4 , in this embodiment, the rotating member still utilizes a cam 42. The locking housing 41 defines a cavity for accommodating the cam 42. This cavity is provided with a retaining wall 413. The distance between retaining wall 413 and the axis of the drive rod 30 is less than the maximum distance between the axis of the drive rod 30 and the rim of the cam 42. The movable member is a combination of a drive connecting rod 45 and a drive pressing block 46. The first end of the drive connecting rod 45 is connected to the drive rod 30, and the second end of the drive connecting rod 45 is connected to the drive pressing block 46. The drive pressing block 46 is provided with a crimping surface for contacting and compressing the branch pipe, and this crimping surface is preferably a semicircular arc surface.

[0042] When the drive rod 30 rotates and drives the cam 42 to rotate, the rim of the cam 42 farthest from the axis of the drive rod 30 abuts the retaining wall 413, causing the drive rod 30 to deform slightly and move away from the retaining wall 413, thereby driving the drive connecting rod 45 to move. The drive connecting rod 45 drives the drive pressure block 46 to move toward the retaining wall 413. At this time, the drive pressure block 46 is in the first position, and its pressing surface is in close contact with the branch pipe, thus achieving sliding locking of the branch pipe. When the drive rod 30 continues to rotate, the rim of the cam 42 with a smaller distance from the axis of the drive rod 30 abuts the retaining wall 413. The drive rod 30 recovers its deformation and moves toward the retaining wall 413, driving the drive connecting rod 45 to move. The drive connecting rod 45 drives the drive pressure block 46 to move away from the retaining wall 413. The drive pressure block 46 returns to the second position, and its pressing surface is separated from the branch pipe, thereby unlocking the branch pipe.

[0043] Preferably, two sets of cams 42 are provided, symmetrically disposed at the upper and lower ends of the connection between the drive link 45 and the drive rod 30, to ensure uniform deformation of the drive rod 30 and maximize deformation at the connection between the drive rod 30 and the drive link 45. The two sets of cams 42 can also be formed into a single unit by a connector, which is not a limitation of this application.

[0044] Fourth embodiment

[0045] Referring to Figure 5 , the locking structure 40 includes a locking ring 43 having an interconnected upper and lower halves. The upper half is connected to the locking housing 41 and secures one of the two slidingly coupled branches via an interference fit. The lower half, with a recessed portion 431, engages the other of the two slidingly coupled branches, locking or unlocking that branch. Unlike the first embodiment, a pin 47 is connected between a pair of locking plates 432 in this embodiment. The first end of the pin 47 is secured to one of the locking plates 432, while the other end of the pin 47 extends through both locking plates 432 and protrudes from the other locking plate 432.

[0046] The rotating part is a winding wheel 49 connected to the driving rod 30, and the movable part is an eccentric part 48 connected to the protruding end of the pin shaft 47 through a rotating shaft. The surface of the eccentric part 48 with a changing distance from the axis of the rotating shaft abuts against the locking plate 432. A traction rope 491 is connected between the eccentric part 48 and the winding wheel 49 so that the traction rope 491 can be driven to wind forward or reverse through the forward and reverse rotation of the winding wheel 49, thereby pulling the eccentric part 48 to rotate between the first position and the second position.

[0047] Exemplarily, the eccentric member 48 defines a groove for the traction rope 491 to pass through. Two top blocks 492 are provided on the traction rope 491 at a predetermined interval. The top blocks 492 are larger than the width of the groove. When the drive rod 30 drives the reel 49 to rotate, and the reel 49 rotates in a first direction, one of the top blocks 492 acts on the eccentric member 48, driving the eccentric member 48 to rotate until its surface with the greatest distance from the axis of the rotating shaft contacts the locking plate 432. This forces the pair of locking plates 432 toward each other, causing the notch 431 to contract and lock the branch pipe passing therethrough. When the drive rod 30 drives the reel 49 to rotate in a second direction opposite to the first direction, the other top block 492 acts on the eccentric member 48, driving the eccentric member 48 to rotate until its surface with the smallest distance from the axis of the rotating shaft contacts the locking plate 432. Under the action of the restoring elastic force of the notch 431 and the locking plate 432, the notch 431 returns and opens, unlocking the branch pipe passing therethrough.

[0048] It should be understood that the locking structure 40 provided in the above-mentioned first embodiment, second embodiment, third embodiment, and fourth embodiment has a locking shell 41 that can not only open a group of branch pipe holes 411 to lock or unlock a group of telescopic branches, but also open two groups of branch pipe holes 411 at the same time to lock or unlock two groups of telescopic branches arranged parallel to each other.

[0049] Furthermore, to facilitate rotation of the drive rod 30, the drive rod 30 may be connected to a handle member 20. The handle member 20 increases the lever arm of the drive rod 30, facilitating rotation of the drive rod 30 with a relatively low torque. A fixed bracket 10 may also be provided at the longitudinal end of the drive rod 30, facilitating rotational connection with other interlocking mechanisms via the fixed bracket 10, thereby forming a multi-leg telescopic support structure in conjunction with multiple sets of telescopic legs. The drive rod 30 is preferably a telescopic rod, i.e., the drive rod 30 includes at least a first rod and a second rod that are slidably coupled together, so that the drive rod 30 can be extended and retracted as the spacing between adjacent locking structures 40 changes.

[0050] The present application also provides a telescopic stand, as shown in FIG1 . The telescopic stand includes at least one leg and the interlocking mechanism described in the above embodiment. The leg includes at least a first branch tube 50, a second branch tube 60, and a third branch tube 70. The first branch tube 50 and the second branch tube 60 are slidably connected, and the second branch tube 60 and the third branch tube 70 are slidably connected. A locking structure 40 is provided at the sliding connection between the first branch tube 50 and the second branch tube 60, and at the sliding connection between the second branch tube 60 and the third branch tube 70.

[0051] Regarding the locking structure 40 at the first branch pipe 50 and the second branch pipe 60, the first branch pipe 50 and the second branch pipe 60 pass through the branch pipe hole 411 of their locking housing 41, the first branch pipe 50 and the locking housing 41 are fixedly connected, and the second branch pipe 60 is locked or unlocked relative to the first branch pipe 50 by the locking structure 40. Regarding the locking structure 40 at the second branch pipe 60 and the third branch pipe 70, the second branch pipe 60 and the third branch pipe 70 pass through the branch pipe hole 411 of their locking housing 41, the second branch pipe 60 and the locking housing 41 are fixedly connected, and the third branch pipe 70 is locked or unlocked relative to the second branch pipe 60 by the locking structure 40.

[0052] The support leg can also be provided with a fourth branch pipe that is slidably connected to the third branch pipe 70 as needed. A locking structure 40 is provided at the sliding connection between the third branch pipe 70 and the fourth branch pipe. The driving rod 30 passes through the driving holes 412 of all the locking structures 40 and is connected to all corresponding rotating parts.

[0053] The telescopic bracket provided in the embodiment of the present application is preferably provided with three legs to form a tripod, and the three legs are rotatably connected by a fixing frame 10 at the end of the interlocking mechanism. The other parts of the tripod are provided with reference to the prior art and will not be described in detail in this application.

[0054] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0055] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0056] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An interlocking mechanism, characterized in that: The invention comprises a driving rod and at least two sets of locking structures; the locking structures are used to lock or unlock two branch pipes that are slidably connected, and the locking structures include: A locking shell is provided with a branch pipe hole for the branch pipe to pass through and a drive hole for the drive rod to pass through, and the locking shell is used to be fixedly connected to one of the branch pipes; A rotating member, sleeved on the driving rod and used to rotate along with the driving rod; A movable member is disposed in the locking housing and connected to one of the rotating member and the driving rod. The movable member is driven to move between a first position and a second position. When the movable member is in the first position, the other branch pipe is locked. When the movable member is in the second position, the other branch pipe is unlocked.

2. The interlocking mechanism according to claim 1, characterized in that: The rotating member is a cam, and the movable member is driven to move toward or away from the branch pipe hole.

3. The interlocking mechanism according to claim 2, characterized in that: The locking structure comprises a locking ring, the locking ring is provided with a notch, the two ends of the notch are connected to oppositely arranged locking plates, and the notch is tightened when the locking plates are close to each other; the movable part is a driving slider abutting between the cam and the locking plate.

4. The interlocking mechanism according to claim 3, characterized in that: The locking structure also includes an adjusting bolt, the driving slider includes a first pushing block and a second pushing block, the second pushing block abuts against the cam, the first pushing block is located between the second pushing block and the locking plate, and is connected to the first pushing block; an adjusting hole is provided on the side of the second pushing block away from the cam, and the adjusting hole is a threaded hole; the adjusting bolt is passed through the adjusting hole, the adjusting bolt has an external thread, and the adjusting bolt is threadedly connected to the adjusting hole; the adjusting bolt is provided with an operating hole; The locking shell is provided with a first avoidance hole, and the two locking plates are respectively provided with a second avoidance hole and a third avoidance hole; the first pushing block is provided with a fourth avoidance hole; the first avoidance hole, the second avoidance hole, the third avoidance hole, the fourth avoidance hole and the operating hole are correspondingly arranged.

5. The interlocking mechanism according to claim 4, characterized in that: The operation hole is a polygonal hole.

6. The interlocking mechanism according to claim 5, characterized in that: The operation hole is a hexagonal hole.

7. The interlocking mechanism according to claim 4, characterized in that: The adjusting hole comprises a limiting hole and a connecting hole, wherein the limiting hole is a groove formed on a side of the second pushing block facing the first pushing block; the connecting hole is recessed at the bottom of the limiting hole and is a threaded hole; The adjusting bolt includes an abutment portion and a threaded portion, wherein the abutment portion is connected to the threaded portion, and the threaded portion is provided with an external thread; the threaded portion is passed through the connecting hole, and the threaded portion is threadedly connected to the connecting hole; the abutment portion is accommodated in the limiting hole and abuts against the bottom wall of the groove of the limiting hole; an operating hole is provided on the side of the abutment portion away from the bolt portion.

8. The interlocking mechanism according to claim 3, characterized in that: A sliding guide mechanism is arranged between the driving slider and the locking housing.

9. The interlocking mechanism according to claim 2, characterized in that: The locking housing is provided with a blocking wall, the cam rotates to fit the blocking wall and drives the driving rod to move closer to or away from the blocking wall when rotating; The movable part comprises a driving connecting rod and a driving pressing block, wherein the first end of the driving connecting rod is connected to the driving rod, and the second end of the driving connecting rod is connected to the driving pressing block, and the driving pressing block is provided with a crimping surface for fitting and pressing the branch pipe.

10. The interlocking mechanism according to claim 1, characterized in that: The locking structure comprises a locking ring, the locking ring is provided with a notch, the two ends of the notch are connected to oppositely arranged locking plates, the notch is tightened when the locking plates are close to each other, and also comprises a pin shaft penetrating and connecting a pair of the locking plates; The movable member is an eccentric member rotatably connected to one end of the pin shaft, and the eccentric member rotates between a first position and a second position; The rotating member is a winding wheel connected to the driving rod, a traction rope is connected between the winding wheel and the eccentric member, and the winding wheel drives the eccentric member to rotate through the traction rope.

11. The interlocking mechanism according to claim 1, characterized in that: At least one end of the driving rod is provided with a fixing frame, and the driving rod is rotatably connected to the fixing frame.

12. The interlocking mechanism according to claim 1, characterized in that: The driving rod is fixedly connected to the handle member.

13. The interlocking mechanism according to claim 1, characterized in that: The driving rod is a telescopic rod.

14. A telescopic bracket, characterized in that: It comprises at least one supporting leg and the interlocking mechanism described in any one of claims 1 to 13, wherein the supporting leg comprises a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe and the second branch pipe are slidably sleeved, and the second branch pipe and the third branch pipe are slidably sleeved; the locking structure is arranged between the first branch pipe and the second branch pipe, and between the second branch pipe and the third branch pipe.

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