Telescopic support and interlocking mechanism

Abstract

The utility model relates to the field of supports, in particular to a telescopic support and an interlocking mechanism. The interlocking mechanism comprises a driving rod and at least two groups of locking structures; the locking structure is used for locking or unlocking the two branch pipes which are connected in a sliding and sleeving mode, and the locking structure comprises a locking shell, a rotating piece and a movable piece. The locking shell is provided with a branch pipe hole allowing the branch pipe to penetrate through and a driving hole allowing the driving rod to penetrate through, and the locking shell is used for being fixedly connected with one branch pipe. The rotating piece sleeves the driving rod and is used for rotating along with the driving rod; the movable part is arranged on the locking shell and connected with one of the rotating part and the driving rod, the movable part is driven to move between a first position and a second position, when the movable part is located at the first position, the other branch pipe is locked, and when the movable part is located at the second position, the other branch pipe is unlocked. The interlocking mechanism can drive the multiple branch pipes which are connected in a sliding and sleeving mode to be locked or unlocked, and the convenience of locking and unlocking of the telescopic support is improved.

Description

Technical Field

[0001] The present application relates to the field of brackets, and in particular to a telescopic bracket and an interlocking mechanism. Background Art

[0002] The existing telescopic bracket usually includes three or more branch pipes that are slidably connected to each other, and a locking structure is required between every two slidably connected branch pipes to lock or unlock them. That is, the telescopic bracket requires at least two sets of locking structures, and they need to be locked or unlocked one by one when extending or contracting the telescopic bracket, which is inconvenient. Utility Model Content

[0003] The present application provides a telescopic bracket and an interlocking mechanism, which can synchronously lock or unlock a plurality of branch pipes that are slidably sleeved with each other, thereby improving the convenience of locking and unlocking the telescopic bracket.

[0004] In a first aspect, the present application provides an interlocking mechanism, comprising 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:

[0005] 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;

[0006] A rotating member, sleeved on the driving rod and used to rotate along with the driving rod;

[0007] The movable member is arranged 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.

[0008] In some embodiments, the rotating member is a cam, and the movable member is driven to move along a branch pipe toward or away from the branch pipe passing through the locking housing.

[0009] In some embodiments, the locking structure includes a locking ring, which is provided with a notch portion, and the two ends of the notch portion are connected to relatively arranged locking plates, which tighten the notch portion when the locking plates approach each other; the movable part is a driving slider abutting between the cam and the locking plate.

[0010] In some embodiments, a sliding guide mechanism is provided between the driving slider and the locking housing.

[0011] In some embodiments, the locking housing is provided with a blocking wall, and 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;

[0012] The movable part comprises a driving connecting rod and a driving pressing block. 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. The driving pressing block is provided with a pressing surface for fitting and pressing the branch pipe.

[0013] In some embodiments, the locking structure includes 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 includes a pin shaft that penetrates and connects a pair of locking plates;

[0014] The movable member is an eccentric member that rotates one end of the connecting pin, and the eccentric member rotates between a first position and a second position;

[0015] The rotating part is a winding wheel connected to the driving rod, a traction rope is connected between the winding wheel and the eccentric part, and the winding wheel drives the eccentric part to rotate through the traction rope.

[0016] In some embodiments, 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.

[0017] In some embodiments, the drive rod is fixedly connected to the handle member.

[0018] In some embodiments, the drive rod is a telescopic rod.

[0019] In a second aspect, the present application provides a telescopic bracket

[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the two branch pipes of the sliding sleeve are respectively connected by means of the locking structure, the branch pipe passes through the branch pipe hole of the locking shell, the locking shell and one of the two branch pipes of the sliding sleeve are fixedly connected, and the movable part locks or unlocks the other branch pipe of the two branch pipes of the sliding sleeve by moving between the first position and the second position; the driving rod passes through the driving hole of the locking structure, and the rotating part is circumferentially fixed relative to the driving rod, that is, the rotating part can rotate with the driving rod, and then directly or indirectly drive the movable part to move between the first position and the second position. The setting of the driving hole and the driving rod ensures that the driving rod can simultaneously connect the rotating parts of multiple locking structures, and then simultaneously drive multiple locking structures to respectively lock or unlock the branch pipes that are mutually slidably sleeved, thereby improving the convenience of locking and unlocking the telescopic bracket using the interlocking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 A schematic diagram of a telescopic bracket using an interlocking mechanism provided in an embodiment of the present application;

[0025] Figure 2 An exploded view of an interlocking mechanism provided in an embodiment of the present application at a locking structure;

[0026] Figure 3 An exploded view of an interlocking mechanism at a locking structure provided in another embodiment of the present application;

[0027] Figure 4 for Figure 3 Schematic diagram from another perspective;

[0028] Figure 5 An exploded view of an interlocking mechanism at a locking structure provided in another embodiment of the present application.

[0029] Description of reference numerals:

[0030] 10-fixed frame; 20-handle member; 30-driving rod; 40-locking structure; 41-locking shell; 411-branch hole; 412-driving hole; 413-blocking wall; 42-cam; 43-locking ring; 431-notch; 432-locking plate; 44-driving slider; 45-driving connecting rod; 46-driving 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. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0034] 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 branch pipes 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.

[0035] The interlocking mechanism provided in the embodiment of the present application is as follows: Figure 1 and Figure 2 As shown, the interlocking mechanism includes a driving rod 30 and at least two sets of locking structures 40, each set of locking structures 40 is used to lock or unlock two branch pipes of the sliding sleeve, and the driving rod 30 connects multiple sets of locking structures 40 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 three branch pipes 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, other parts may also be included. The locking and unlocking principles of the locking structure 40 will be described below with different embodiments.

[0036] The locking shell 41 has a branch pipe hole 411 and a drive hole 412 formed through its upper and lower surfaces, and the branch pipe hole 411 and the drive hole 412 are arranged substantially in parallel. The branch pipe hole 411 is used for two branch pipes that are slidably connected to pass through it, and the drive hole 412 is used for 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 arranged in the locking shell 41, and one of the rotating member and the drive rod 30 is connected to the movable member, so that the movable member is directly or indirectly driven to move between the first position and the second position by the rotation of the rotating member. One of the two branch pipes that are slidably connected is fixedly connected to the locking shell 41, and the other branch pipe is locked or unlocked under the action of the movable member. When the movable member is in the first position, the other branch pipe is locked; after the movable member moves to the second position, the branch pipe is unlocked.

[0037] First embodiment

[0038] See also Figure 2 In this embodiment, the driving rod 30 is a square tube, and the rotating member is a cam 42. The cam 42 is fixedly connected to the driving rod 30 and can follow the driving rod 30 when the driving rod 30 rotates. The movable member is arranged in contact with the cam 42 and is slidably connected to the locking shell 41. During the rotation of the cam 42, the movable member is driven to move 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 shell 41 and is relatively fixed to one of the two branch pipes that are slidably connected by an interference fit; the lower half is reserved with a notch 431 and is connected to the other branch pipe of the two branch pipes that are slidably connected, so as to lock or unlock the branch pipe.

[0039] The notch 431 is connected to locking plates 432 at both ends thereof. The pair of locking plates 432 connected to the two ends of the notch 431 are substantially parallel and oppositely arranged. When the locking plates 432 are close to each other, the notch 431 contracts to lock the branch pipe; when the locking plates 432 are separated from each other, the notch 431 opens to slide and unlock the branch pipe. The movable part adopts a driving slider 44 that slides between the cam 42 and one set of locking plates 432. When the driving rod 30 rotates and drives the cam 42 to rotate, the rim of the cam 42 farthest from the axis of the driving rod 30 abuts against the driving slider 44, squeezing the driving slider 44 to move toward the locking plate 432, and the notch 431 is tightened to lock the branch pipe. At this time, the driving 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 is reset to the second position.

[0040] Furthermore, a sliding guide mechanism may be provided between the driving slider 44 and the locking housing 41, and the driving slider 44 is slidably guided by the sliding guide mechanism to ensure that the driving slider 44 moves in the direction from the first position to the second position. Exemplarily, 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 is in contact with the locking housing 41.

[0041] Second embodiment

[0042] See also Figure 3 and Figure 4 In this embodiment, the rotating member still adopts the cam 42, and the locking housing 41 is provided with a cavity for accommodating the cam 42, and the cavity is provided with a retaining wall 413, and the distance between the retaining wall 413 and the axis of the driving rod 30 is less than the maximum distance between the axis of the driving rod 30 and the rim of the cam 42. The movable member adopts the form of a combination of a driving connecting rod 45 and a driving pressing block 46, wherein the first end of the driving connecting rod 45 is connected to the driving rod 30, and the second end of the driving connecting rod 45 is connected to the driving pressing block 46; the driving pressing block 46 is provided for fitting the crimping surface of the branch pipe, and the crimping surface is preferably set as a semicircular arc surface.

[0043] When the driving rod 30 rotates and drives the cam 42 to rotate, the rim of the cam 42 farthest from the axis of the driving rod 30 abuts against the retaining wall 413, causing the driving rod 30 to deform to a certain extent and move away from the retaining wall 413, thereby driving the driving connecting rod 45 to move, and the driving connecting rod 45 drives the driving pressing block 46 to move toward the retaining wall 413. At this time, the driving pressing block 46 is in the first position, and its crimping surface is close to the branch pipe, so that the branch pipe is slidably locked. When the driving rod 30 continues to rotate, the rim of the cam 42 with a smaller distance from the axis of the driving rod 30 abuts against the retaining wall 413, and the driving rod 30 recovers its deformation and moves toward the retaining wall 413, driving the driving connecting rod 45 to move, and the driving connecting rod 45 drives the driving pressing block 46 to move in the direction away from the retaining wall 413. The driving pressing block 46 is reset to the second position, and its crimping surface is separated from the branch pipe, unlocking the branch pipe.

[0044] The cams 42 are preferably provided in two groups, and the two groups of cams 42 are symmetrically provided at the upper and lower ends of the connection between the driving connecting rod 45 and the driving rod 30, respectively, to ensure the uniformity of the deformation of the driving rod 30, so that the connection section between the driving rod 30 and the driving connecting rod 45 obtains the maximum deformation. The two groups of cams 42 can also be formed into a whole by a connecting member, and the present application does not limit this.

[0045] Third embodiment

[0046] See also Figure 5The locking structure 40 includes a locking ring 43, which has an upper half and a lower half connected to each other. The upper half is connected to the locking housing 41 and is relatively fixed to one of the two branch pipes that are slidably sleeved by interference fit; the lower half is reserved with a notch 431 and is sleeved to the other of the two branch pipes that are slidably sleeved to lock or unlock the branch pipe. Different from the first embodiment, a pin 47 is connected between a pair of locking plates 432 in this embodiment, and the first end of the pin 47 is clamped to one of the locking plates 432, and the other end of the pin 47 passes through the two locking plates 432 and is protruded relative to the other locking plate 432.

[0047] 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, and 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 reversely 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.

[0048] Exemplarily, the eccentric member 48 is provided with a wire groove for the traction rope 491 to pass through, and two top blocks 492 are arranged on the traction rope 491 at a preset interval, and the size of the top blocks 492 is larger than the width of the wire groove. When the driving rod 30 drives the winding wheel 49 to rotate, and the winding wheel 49 rotates in a first direction, one of the top blocks 492 acts on the eccentric member 48, drives the eccentric member 48 to rotate until the surface with the largest distance from the axis of the rotating shaft contacts the locking plate 432, presses a pair of locking plates 432 to approach each other, and the notch 431 contracts, locking the branch pipe passing through it. When the driving rod 30 drives the winding wheel 49 to rotate in a second direction opposite to the first direction, the other top block 492 acts on the eccentric member 48, drives the eccentric member 48 to rotate until the surface with the smallest distance from the axis of the rotating shaft contacts the locking plate 432, and under the action of the resetting elastic force of the notch 431 and the locking plate 432, the notch 431 is reset and opened, unlocking the branch pipe passing through it.

[0049] It should be understood that the locking structure 40 provided in the above-mentioned first embodiment, the second embodiment and the third embodiment, the locking shell 41 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.

[0050] In addition, in order to facilitate the rotation of the driving rod 30, the driving rod 30 can also be connected to the handle member 20, and the handle member 20 is used to increase the force arm of the driving rod 30, so that the driving rod 30 can be driven to rotate with a smaller torque. A fixing frame 10 can also be set at the end of the driving rod 30 in the length direction, so that it is convenient to rotate and connect with other interlocking mechanisms through the fixing frame 10, and cooperate with multiple groups of telescopic legs to form a multi-leg telescopic bracket. The driving rod 30 is preferably a telescopic rod, that is, the driving rod 30 at least includes a first rod and a second rod that are slidably sleeved, so that the driving rod 30 can be telescoped and extended by the change of the spacing between the adjacent locking structures 40.

[0051] The present application also provides a telescopic bracket, such as Figure 1 As shown, the telescopic bracket includes at least one leg and the interlocking mechanism described in the above embodiment, the leg includes at least a first branch pipe 50, a second branch pipe 60 and a third branch pipe 70, the first branch pipe 50 and the second branch pipe 60 are slidably sleeved, and the second branch pipe 60 and the third branch pipe 70 are slidably sleeved. The sliding connection between the first branch pipe 50 and the second branch pipe 60 and the sliding connection between the second branch pipe 60 and the third branch pipe 70 are both provided with a locking structure 40.

[0052] For 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 the 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. For 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 the 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.

[0053] The supporting leg can also be provided with a fourth branch pipe slidably connected to the third branch pipe 70 as needed, and 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.

[0054] 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 an interlocking mechanism. The other parts of the tripod are provided with reference to the prior art and will not be described in detail in the present application.

[0055] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments 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 "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence 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 interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0056] 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, 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.

[0057] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

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: A sliding guide mechanism is arranged between the driving slider and the locking housing.

5. 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.

6. 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.

7. 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.

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

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

10. 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 9, 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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