Quickly-adjustable foot stool

Abstract

The invention belongs to the technical field of supporting equipment, and particularly relates to a fast adjusting foot stool. An operation part is connected with an outer foot tube, a locking part is connected with an inner foot tube, the inner foot tube is sleeved with the outer foot tube to form telescopic arrangement, the inner foot tube is limited by the locking part to be locked in the outer foot tube, and the locking part is locked in the mode that a locking tube sleeve abuts against a rolling body to enable the rolling body to abut against the outer foot tube. The locking linkage block is rotated by connecting the operating component with the driving component, the locking pressing block is driven to move relative to the locking pipe sleeve, the rolling body is released, the pressure of the rolling body on the inner wall of the outer foot pipe is reduced, the locking component is unlocked and can move relative to the outer foot pipe to conduct telescopic operation, the structure is simple, good locking force can be provided, and the service life of the locking component is prolonged. And a stable locking state can be kept after telescopic operation.

Description

Technical Field

[0001] The invention belongs to the technical field of supporting equipment, and in particular relates to a quick-adjusting tripod. Background Art

[0002] Tripods and legs are important supporting parts, such as trekking poles, elderly walking sticks, and tripods or monopods composed of multiple legs in photographic equipment. With the development of science and technology, they have gradually achieved high strength and light weight. In terms of function, they can adjust the angle, height, and storage. Traditional leg locking structures, especially for the telescopic adjustment of multi-section leg tubes, mostly use a rotating locking structure set at the joint of each leg tube. When users perform telescopic operations, they need to unlock and adjust step by step. This structure is slow and cumbersome to adjust. Summary of the invention

[0003] The object of the present invention is to provide a quick-adjusting tripod with a simple structure, which enables faster unlocking speed and simpler operation.

[0004] Based on this, the present invention provides a quick-adjustable tripod, comprising an operating component, a driving component and at least one set of locking components; The operating component includes a mounting shell and a linkage adjustment component. The mounting shell is connected to the outer leg tube. The linkage adjustment component is arranged on the mounting shell and connected to the driving component. The driving component is rotated relative to the outer leg tube through the linkage adjustment component. The locking component is arranged in the outer leg tube, and comprises: Locking sleeve, used to connect with the inner leg pipe; A locking linkage block is coaxially connected to the locking sleeve and is provided for the driving component to pass through and can rotate with the driving component; The locking pressure block is sleeved on the locking linkage block, and the locking pressure block is also provided with a rolling body protruding from its outer surface, and the locking sleeve can press the rolling body so that the rolling body faces outward and abuts against the inner wall of the outer leg tube, so as to limit the rotation and movement of the inner leg tube relative to the outer leg tube; When the operating component rotates the driving component and drives the locking linkage block to rotate, the locking pressing block can be moved relative to the locking sleeve to release the rolling body for unlocking.

[0005] A quick-adjustable tripod as described above comprises a plurality of leg tube assemblies, and the plurality of leg tube assemblies are arranged in stages, and the driving component is connected to the locking components of each leg tube assembly to drive the locking components of the plurality of leg tube assemblies to be unlocked synchronously; Wherein, the leg tube assembly includes a locking component and an inner leg tube.

[0006] In the above-mentioned quick-adjustment tripod, the mounting shell has an inner cavity, and the linkage adjustment assembly includes: A first linkage block is disposed in the inner cavity; A linkage member connected to the driving member and cooperating with the first linkage block, and capable of rotating relative to the first linkage block when the first linkage block moves; A reset member, disposed in the inner cavity and located on the upper side of the first linkage block; An operating rod is arranged on the mounting shell, and the first linkage block can be driven to move in the inner cavity through the operating rod.

[0007] In the quick-adjustable tripod as described above, the linkage adjustment assembly further comprises a second linkage block, which is hinged in the mounting shell and has one end cooperating with the operating rod and the other end abutting against the first linkage block.

[0008] In a quick-adjustable tripod as described above, the operating rod includes a hinged portion and a handle portion, the hinged portion is hinged on the mounting shell, and the operating rod is also provided with a rolling pressure piece, the rolling pressure piece abuts against one end of the second linkage block, and the second linkage block can be rotated along the hinge by pressing the handle portion.

[0009] A quick-adjustable tripod as described above also includes a pipe plug, which is installed on the lower side of the installation shell and is used to connect with the external leg tube. A plurality of assembly grooves are provided on the outer peripheral surface of the pipe plug, and a limiting installation portion is provided on the inner wall of the external leg tube. The limiting installation portion of the external leg tube can be paired with any assembly groove.

[0010] In the quick-adjustable tripod as described above, the locking linkage block comprises: Positioning unit; The first connection end is arranged on the upper side of the positioning portion, and the outer peripheral surface has a threaded connection portion, and the locking block is sleeved on the first connection end and is located on the upper side of the positioning portion; A second connecting end is provided at the lower side of the positioning portion, and the locking sleeve is connected to the second connecting end; The mounting hole passes through the positioning portion, the first connecting end and the second connecting end, and is used for the driving component to pass through.

[0011] In the quick-adjustable tripod as described above, a limiting mounting structure is further provided on the outer surface of the locking pressure block, and the limiting mounting portion of the outer leg tube cooperates with the limiting mounting structure to limit the rotation of the leg tube assembly relative to the outer leg tube.

[0012] In the quick-adjustable tripod as described above, a limiting portion opened along the axial direction is further provided on the inner wall of the mounting hole, and a limiting structure cooperating with the limiting portion is provided on the outer peripheral surface of the driving component. The limiting portion cooperates with the limiting structure so that the locking linkage block can rotate with the driving component.

[0013] A quick-adjustable tripod as described above, wherein the locking block has a locking inner cavity, a plurality of mounting notches penetrating the locking inner cavity are provided on the outer circumference of the locking block, and the rolling body is arranged on the mounting notches and a part of the surface is placed in the locking inner cavity; The locking sleeve has a pressing portion extending into the locking inner cavity, and the pressing portion abuts against the rolling body, so that the rolling body tends to move toward the outside of the locking pressure block.

[0014] Implementing the embodiments of the present invention has the following beneficial effects: 1. The present invention provides a quick-adjustable tripod, which is composed of an operating component connected to an outer leg tube, a locking component connected to an inner leg tube, and an outer leg tube sleeved with an inner leg tube to form a retractable arrangement, wherein the inner leg tube is restricted by the locking component to be locked in the outer leg tube, and the operating component is connected to a driving component, and the driving component is used to unlock the internal locking component, so that the operation is simpler and faster.

[0015] 2. The present invention uses an operating component to rotate the driving component to drive the locking component to unlock. The internal locking sleeve presses the rolling body to lock the rolling body against the outer leg tube. The locking linkage block is rotated to drive the locking pressure block to move relative to the locking sleeve and release the rolling body, thereby reducing the pressure on the inner wall of the outer leg tube, so that the locking component is unlocked and can move relative to the outer leg tube or another leg tube assembly to perform a telescopic operation. The structure is simple, and it can provide good locking force, and can maintain a stable locking state after the telescopic operation.

[0016] 3. The operating component of the present invention can synchronously unlock the locking components of multiple groups of leg tube assemblies through the driving component, making the folding and unfolding operations faster. After being unlocked at the same time, it is convenient for the operator to fold and unfold any group of leg tube assemblies separately, which is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a quick-adjustable tripod according to the present invention; Figure 2 for Figure 1 Internal schematic diagram of Figure 3 is a schematic diagram of a multi-section leg tube assembly; Figure 4 It is a half-section view; Figure 5An exploded view of the operating components; Figure 6 is a cross-sectional view of the operating component in a locked state; Figure 7 It is a cross-sectional view of the unlocked state of the operating component; Figure 8 It is a schematic diagram of the internal structure of the operating component; Fig. 9 It is a schematic diagram of the leg locking component; Fig.10 for Fig. 9 Exploded diagram of Fig.11 is a cross-sectional view in a locked state; Fig.12 This is a cross-sectional view of the unlocked state. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 4 As shown, an embodiment of the present invention provides a quick-adjustable tripod, comprising an operating component 1, a driving component 8 and at least one set of locking components 2, wherein the operating component 1 is connected to the outer leg tube 99 to form the outermost component of the tripod, and the locking component 2 is connected to the inner leg tube 9 to form a leg tube assembly that is sleeved and can be retracted relative to the outer leg tube 99; Specifically, the operating component 1 is connected to the outer leg tube 99, the leg tube assembly is arranged inside the outer leg tube 99 and can slide relative to the outer leg tube 99 to extend or contract; the leg tube assembly cooperates with the inner wall of the outer leg tube 99 through the locking component 2 to limit the sliding and rotation of the leg tube assembly relative to the outer leg tube 99.

[0021] In the embodiment of the present invention, the operating component 1 includes a mounting housing 11 and a linkage adjustment assembly, wherein the mounting housing 11 is connected to the outer leg tube 99, and the linkage adjustment assembly is disposed on the mounting housing 11 and connected to the driving component 8, and the driving component 8 is rotated relative to the outer leg tube 99 through the linkage adjustment assembly. The driving component 8 is a main linkage component connecting the operating component 1 and the locking component 2. In the embodiment of the present invention, as a preferred embodiment, the driving component 8 adopts an inner tube structure, which is disposed inside the outer leg tube 99 and is coaxially disposed with the outer leg tube 99.

[0022] Moreover, the locking component described in this scheme is arranged in the outer leg tube 99, and includes: a locking sleeve 25 for connecting with the inner leg tube 9; a locking linkage block 22, which is coaxially connected to the locking sleeve 25 and is provided for the driving component 8 to pass through and can rotate with the driving component 8; a locking pressure block 23, which is sleeved on the locking linkage block 22, and the locking pressure block 23 is also provided with a rolling body 24 protruding from its outer surface, the locking sleeve 25 can press the rolling body 24 so that the rolling body 24 is outwardly against the inner wall of the outer leg tube 99 to limit the rotation and movement of the inner leg tube 9 relative to the outer leg tube 99; when the operating component 8 rotates the driving component 8 and drives the locking linkage block 22 to rotate, the locking pressure block 23 can move relative to the locking sleeve 25 to release the rolling body 24 for unlocking. The locking mechanism is implemented by pressing the rolling body against the outer leg tube by means of an internal locking sleeve, and the locking linkage block is rotated to drive the locking pressure block to move relative to the locking sleeve and release the rolling body, thereby reducing the pressure on the inner wall of the outer leg tube, so that the locking component is unlocked and can move relative to the outer leg tube or another leg tube assembly to perform a telescopic operation. The structure is simple, and it can provide a good locking force, and can maintain a stable locking state after the telescopic operation.

[0023] The present solution is directed to a retractable tripod and can be applied to a pan head, a photography stand, or to supporting equipment with retractable legs, such as a trekking pole and a cane. The locking component 2 is arranged inside and can be uniformly unlocked by an operating component arranged outside, making the operation simpler. The present solution also optimizes the unlocking method by using the relative rotation of the driving component 8 to unlock, which makes the structure simpler, and the rotating driving component does not need to consider its axial displacement, so it is not restricted by the contraction and extension state of the entire tripod.

[0024] In the embodiment of the present scheme with multiple sections and multiple groups of leg tube assemblies, the multiple groups of leg tube assemblies are sleeved step by step, and the driving component 8 is connected to the locking components of each group of leg tube assemblies to drive the locking components of the multiple groups of leg tube assemblies to unlock synchronously. It can be understood that the structures of the multiple groups of leg tube assemblies in the present scheme are basically the same, and only the aperture size is different. For example, the multiple groups of leg tube assemblies are divided into a first-level leg tube assembly, a second-level leg tube assembly, a third-level leg tube assembly from the outside to the inside..., and the multiple groups of leg tube assemblies meet the requirements that the first-level inner leg tube can be sleeved on the second-level inner leg tube and the outside of the second-level locking component, that is, the second-level locking component cooperates with the first-level inner leg tube to lock, and similarly, the second-level leg tube assembly is sleeved on the outside of the third-level leg tube assembly, forming a step-by-step sleeve. The number of designed leg tube assemblies can be selected according to the designed length.

[0025] In addition, the operating component 8 of the present solution can synchronously unlock the locking components of multiple groups of leg tube assemblies through the driving component, making the folding and unfolding operations faster. After being unlocked at the same time, it is convenient for the operator to fold and unfold any group of leg tube assemblies separately, which is more flexible to use.

[0026] Preferably, in order to facilitate folding, the present invention provides driving components for each of the multiple leg tube assemblies, and the multi-stage driving components are also designed to be arranged step by step, that is, the driving component is a hollow structure running through the middle to facilitate the passage of the next stage driving component therethrough.

[0027] In order to facilitate the rotation of the driving component 8 and drive the multi-stage driving components to rotate, the present solution has a limiting structure 801 on the outer peripheral surface of the driving component 8, which is a groove opened along the axial direction. Correspondingly, the groove can form a rib protruding from the inner wall of the driving component 8, so that the groove on the outer periphery of the next-stage driving component 8 can cooperate with the rib to achieve rotational cooperation.

[0028] Of course, the rotation limit structure of this solution is also applied to the outer leg tube 99 and the inner leg tube 9, which are also tubular. The outer leg tube 99 is provided with a limit installation part through the inner wall, such as the rib part mentioned above, which cooperates with the limit installation structure 231 on the outer periphery of the locking component. As a preferred embodiment, the limit installation structure 231 of this solution can adopt the groove structure mentioned above, and the rib part is embedded through the groove structure, thereby limiting the rotation of the locking component relative to the outer leg tube 99, and the locking component limits the movement and rotation of the inner leg tube 9 relative to the outer leg tube 99 to achieve the locking effect. Similarly, in the application of the multi-stage leg tube assembly, the limit installation part is provided on the inner leg tube 9 of the upper level, and cooperates with the limit installation structure of the locking component of the lower level to achieve step-by-step limit.

[0029] Since the present solution adds a steering limit, it can be understood as the positioning installation of the driving component 8 and the locking component 2, while limiting the installation direction of the inner leg tube 9, and finally limiting the installation direction of the outer leg tube 99 located at the outermost side. In order to make the installation easier, the present solution has a plurality of assembly grooves 181 on the outer peripheral surface of the pipe plug 18, and the limit installation portion of the outer leg tube 99 can be paired with any assembly groove 181.

[0030] like Figure 1 , Figures 5 to 8As shown, in the embodiment of the present invention, the specific structure of the operating component is: including a mounting housing 11 and a linkage adjustment component. Specifically, the mounting housing 11 has an inner cavity 101, and the linkage adjustment component includes: a first linkage block 12, which is arranged in the inner cavity 101; a linkage member 13, which cooperates with the first linkage block 12 and can rotate relative to the first linkage block 12 when the first linkage block 12 moves; a reset member 17, which is arranged in the inner cavity 101 and located on the upper side of the first linkage block 12; an operating rod 14, which is arranged on the mounting housing 11, and the first linkage block 12 can be driven to move in the inner cavity 101 through the operating rod 14. The user moves the internal first linkage block through the operating rod, so that the linkage member rotates, and the driving action can be completed. In application, the driving member corresponding to the locking member is connected through the linkage member, so that the corresponding driving member can be driven to rotate to achieve unlocking, and the first linkage block is reset through the reset member, so that when the operator releases the operation, the first linkage block and the linkage member can be automatically reset to prevent the linkage member from remaining in the unlocked state.

[0031] In the embodiment of the present invention, as a preferred embodiment, the reset member 17 is preferably a spring. Specifically, the first linkage block 12 is driven to translate in the inner cavity 101 to drive the linkage member 13 to rotate, and after the first linkage block 12 moves, the reset member 17 is compressed, so as to ensure that after the user releases the operating rod 14, the reset member 17 resets the first linkage block 12 and the linkage member 13 at the same time. The reset member 17 of this solution is installed in the inner cavity 101, and is located between the inner wall of the inner cavity 101 and the upper side of the first linkage block 12 to reset the first linkage block 12 after it moves. Of course, in order to make the installation simpler, the solution can set a pressure cover on the upper side of the installation shell 11, and the reset member 17 is located between the pressure cover and the first linkage block 12, so that the components can be easily installed into the inner cavity 101 through the pressure cover.

[0032] In this solution, the matching structure of the first linkage block 12 and the linkage member 13 can adopt a spiral guide matching structure. Specifically, the first linkage block 12 has an installation cavity, and a screw matching part is provided in the installation cavity. The linkage member 13 has a screw part 131 that matches the installation cavity and a driving part 132 that is provided on the lower side of the screw part 131 and extends from the installation cavity. In application, it can be understood that the linkage member 13 is connected to the corresponding driving component 8 and is restricted from moving by the corresponding driving component, that is, after the first linkage block 12 is moved, the screw part 131 cooperates with the screw part with the spiral groove to force the linkage member 13 to rotate, thereby realizing the above operation. In order to further improve the smoothness of the action, a ball is also provided between the screw matching part and the screw part 131, and the ball rolls between the screw matching part and the screw part 131, making the rotation smoother.

[0033] In addition, in the embodiment of the present invention, a reflux block 123 is further provided on the first linkage block 12. The reflux block 123 is used to change the spiral groove of the screw mating part so that the ball can be quickly reset, so that the ball can roll between the screw part 131 and the screw mating part during daily repeated operations.

[0034] In the embodiment of the present invention, when unlocking, the first linkage block 12 is unlocked by moving upward, and the reset member is arranged on the upper side of the first linkage block 12 to reset the first linkage block 12. The operating rod 14 includes a hinge portion 141 and a handle portion 142. The user presses the handle portion 142 to make the handle portion 142 approach the surface of the mounting shell 11 along the hinge portion 141 to perform the unlocking operation. In order to make the structure simpler and easier to install, the linkage adjustment assembly described in this scheme also includes a second linkage block 16, which is hinged in the mounting shell 11, and one end of the second linkage block 16 cooperates with the operating rod 14 and the other end abuts against the first linkage block 12. It can be understood that when the handle portion 142 is pressed, one end of the second linkage block 16 is lowered, thereby causing the end abutting against the first linkage block 12 to rise, so as to realize the above-mentioned operation of driving the first linkage block 12 to move upward.

[0035] Specifically, in order to further make the operation smoother, the hinged portion 141 is hinged on the mounting housing 11, and the operating rod 14 is further provided with a rolling pressing member 15, which abuts against one end of the second linkage block 16, and the second linkage block 16 can be rotated along the hinge by pressing the handle portion 142. The rolling pressing member 15 changes the contact cooperation between the operating rod 14 and the second linkage block 16 into a rolling cooperation, which greatly improves the smoothness of the operation.

[0036] In the embodiment of the present invention, the second linkage block 16 has a clamping portion 161 and an abutting end 162 respectively located on both sides of the hinge, the abutting end 162 abuts against the rolling top pressure member 15, and a limiting portion 121 cooperating with the clamping portion 161 is provided on the periphery of the first linkage block 12. Specifically, in this solution, the clamping portion 161 is in the shape of a U-shaped fork, which extends to both sides of the periphery of the first linkage block 12 in a semi-enclosed manner. At this time, corresponding limiting portions 121, such as convex columns and convex pins, can be provided on both sides of the periphery of the first linkage block 12 to cooperate with the clamping portion 161.

[0037] Moreover, the operating rod 14 has a second inner cavity 140, and the rolling top pressure piece 15 is installed in the second inner cavity 140; a notch penetrating to the inner cavity 101 is provided on the outer periphery of the mounting housing 11, and the second linkage block 16 is hinged in the inner cavity 101, and the abutting end 162 extends from the notch and enters the second inner cavity 140 to abut against the rolling top pressure piece 15. The structure is simple and fully utilizes the space, making the structure more compact and stable.

[0038] Specifically, the rolling pressure piece 15 includes a mounting post and a rolling body 351 disposed on the mounting post, and the surface of the abutting end 162 abutting against the rolling pressure piece 15 is an arc-shaped guide surface. When the first linkage block 12 is reset, that is, after the operator releases the handle, it can be understood that the second linkage block 16 is reset synchronously, and at this time, the abutting end 162 cooperates with the rolling pressure piece 15, so that the handle is also reset.

[0039] like Figures 9 to 12 As shown, correspondingly, the specific structure of the leg tube assembly and the locking component of the present scheme is: the locking component 2 and the inner leg tube 9 form a single-stage leg tube assembly, the locking component is arranged at the upper end of the inner leg tube 9, and the driving component 8 is arranged on the inner side of the leg tube 9 through the locking component. The present scheme connects the driving component 8 with the locking linkage block 22, so that when operating, only the driving component 8 needs to be rotated to drive the locking linkage block 22 to rotate. Moreover, in the scheme, when the locking linkage block 22 is driven to rotate by the driving component 8, the locking pressure block 23 moves upward relative to the locking sleeve 25, thereby moving away from the locking sleeve 25, and the rolling body 24 is released at this time, that is, the top pressure on the other leg tube 9 is reduced, thereby realizing the unlocking state. When the driving component 8 is reset, the locking pressure block 23 moves downward relative to the locking sleeve 25, thereby approaching the locking sleeve 25, and the locking sleeve 25 presses the rolling body 24 outward, thereby returning to the locked state.

[0040] Furthermore, in the embodiment of the present invention, the locking block 23 has a locking inner cavity 2301, part of the surface of the rolling body 24 is placed in the locking inner cavity 2301, and the locking sleeve 25 has a pressing portion 251 extending into the locking inner cavity 2301, and the pressing portion 251 abuts against the rolling body 24, so that the rolling body 24 tends to move toward the outside of the locking block 23. Specifically, the locking inner cavity 2301 of the locking block 23 of the present solution has a downward opening, and the outer peripheral surface of the locking block 23 is provided with a plurality of mounting notches penetrating into the locking inner cavity 2301. It can be understood that the rolling body 24 is arranged on the mounting notches and part of its surface is placed in the locking inner cavity 2301, and the rolling body 24 itself can roll, and the whole can move radially relative to the locking block 23. Thus, when the rolling body 24 is pressed by the pressing portion 251, it moves radially outward, thereby contacting the inner wall of the other outer leg tube 9 or the outer leg tube 99 and exerting sufficient pressing force to achieve the locking effect. In addition, the pressing portion 251 extends into the locking inner cavity 2301, making the inner cavity structure more compact, making the overall structure more stable, and reducing shaking.

[0041] In the embodiment of the present invention, the rolling body 24 has not only the locking function but also the guiding sliding function. The rolling body 24 in this solution is a roller, which is rotatably arranged on the locking block 23, and the roller only rolls in the axial direction. The axial direction here refers to the axis of the inner leg tube 9, which effectively prevents the leg tube group of this section from rotating relative to the other leg tube group, that is, it can only move relative to the axial direction.

[0042] In the present scheme, the roller-shaped rolling body 24 is utilized to achieve a strong unfolding operation when in the locked state. Specifically, taking the upward movement of the locking pressure block 23 relative to the locking sleeve 25 when unlocked as an example, in the locked state, if the user directly pulls out the leg tube 9 of this section, since the leg tube 9 is connected to the locking sleeve 25, the locking sleeve 25 has a tendency to move downward relative to the locking pressure block 23, thereby reducing the top pressure on the rolling body 24. At this time, under the action of the rolling body 24 that rolls only in the axial direction, this section of the leg tube group can smoothly extend outward relative to the other section of the leg tube group, so that it can be unfolded in the locked state. Generally speaking, the unlocking operation is generally set at the upper end of the outermost leg tube group, so that when multiple sections of the leg tube group are unfolded, the user does not need to maintain the unlocking operation to fully unfold them, so as to avoid the multiple sections of the leg tube being too long and inconvenient to operate when unfolded.

[0043] Of course, this structure also prevents the user from forcibly folding the leg tube, that is, in the locked state, if the user forcibly pushes the current leg tube into the other leg tube 9, the upward force applied to the locking sleeve 25 during the pushing increases the force of the locking sleeve 25 pressing the rolling body 24, thereby making the rolling body 24 press against the inner wall of the other leg tube with greater force, so that the directional operation is prevented, effectively preventing the contraction due to external force during use, and improving the locking stability. And considering that when the leg tube is in use, the lowest leg tube is supported on the ground, it can be understood that the multi-stage leg tube set can be folded by the user only needing to unlock the upper end and press the outermost leg tube downward, without having to consider the problem of being too long after unfolding and inconvenient to fold.

[0044] In addition, in order to further improve stability, the roller-shaped rolling body 24 of the present embodiment has an outer contour that matches the inner wall of the other leg tube 91, so that the rolling body 24 is actually in line contact with the inner wall. Compared with the point contact of ordinary balls, the contact area can be increased, the relative shaking is reduced, and the stability is maintained.

[0045] One of the embodiments of the present solution is that: there are multiple rolling bodies 24 , and the multiple rolling bodies 24 are distributed along a horizontal circumference on the outer peripheral surface of the locking block 23 .

[0046] The second embodiment of this scheme is that there are multiple rolling bodies 24, and the multiple rolling bodies 24 form at least two rows of wheels distributed along the circumference. The design of double rows of rolling bodies effectively increases the contact range with the inner wall of the other leg tube when locking, greatly improving the stability performance.

[0047] In the embodiment of the present invention, the outer peripheral surface of the pressing portion 251 has an annular guide surface 2510, and the cross section of the annular guide surface 2510 has an outer contour that is oblique along the axis. It can be understood that when the locking pressure block 23 and the locking sleeve 25 are approaching or moving away from each other, the action of the annular guide surface 2510 releases the inner space of the rolling element 24, that is, reduces its outward pressing force, thereby releasing or unlocking it. As a preferred but not limiting embodiment, the cross section of the annular guide surface 2510 of this scheme can be an inclined surface or an arc surface. Of course, for the above-mentioned two rows of wheel row designs distributed along the circumference, this scheme also adapts to the design of double annular guide surfaces 2510 to correspond to the single row of rolling elements 24 respectively.

[0048] In the embodiment of the present invention, the locking linkage block 22 is an important accessory for the unlocking operation, and its specific structure includes: a positioning portion 221; a first connecting end 222, which is arranged on the upper side of the positioning portion 221 and has a threaded connecting portion on the outer peripheral surface, and the locking pressure block 23 is sleeved on the first connecting end 22 and is located on the upper side of the positioning portion 21; a second connecting end 223, which is arranged on the lower side of the positioning portion 221, and the locking sleeve 25 is connected to the second connecting end 223; a mounting hole 2201, which passes through the positioning portion 221, the first connecting end 222 and the second connecting end 223, and is used for the driving component 8 to pass through.

[0049] Specifically, it also includes a locking nut 29, which is connected to the first connection end 22 and pressed on the locking sleeve 25, and can be connected to the locking sleeve 25 through the locking nut 29. This solution can also be connected to the locking sleeve 25 by setting a threaded portion on the outside of the second connection end 223. When used, since the locking block 23 is abutted against the other leg tube 9 through the rolling body 24, and the structure of the rolling body 24 makes it unable to rotate relative to the other leg tube 9, when the locking linkage block 2 rotates, the locking nut 1 connected to the locking block 23 is in a non-rotating state relative to the locking linkage block 22, so that the locking nut 1 produces an axial upward movement effect under the action of the threaded connection portion of the first connection end 22, thereby realizing the unlocking function.

[0050] For the sake of convenience, the locking linkage block 22 can rotate with the driving component 8. The inner wall of the mounting hole 2201 is also provided with a limiting portion 22011 opened in the axial direction, and the outer peripheral surface of the driving component 8 is provided with a limiting structure 801 that cooperates with the limiting portion 22011. In this solution, the limiting portion 22011 can be set as a limiting rib protruding along the inner wall of the mounting hole 2201, and the limiting structure corresponding to the driving component 8 is an axial groove that cooperates with the limiting rib, so that when the driving component 8 rotates, it can drive the locking linkage block 2 to rotate by cooperating with the limiting rib. Of course, it is also possible to set an axial groove on the inner wall of the mounting hole 2201, and correspondingly set corresponding limiting rib structures on both sides of the outer periphery of the driving component 8, so as to achieve the above effect.

[0051] In the present scheme, in order to prevent the driving component 8 from axially moving relative to the locking linkage block 22, a limit ring 80 is further provided on the outer side of the driving component 8, and the outer diameter of the position where the limit ring 80 is installed is increased, so that the axial movement of the driving component 8 relative to the locking linkage block 2 can be limited by limiting the axial movement of the limit ring 80. For example, in an embodiment of the present invention, a concave recess 2511 is provided on the locking sleeve 25, and a lower through hole is provided in the recess 2511 only for the driving component 8 to pass through, so that the recess 2511 naturally forms a platform that abuts against the lower end of the limit ring 80, and after the locking linkage block 22 is installed, the lower end of the second connecting end 223 thereof is located on the upper side of the limit ring 80, thereby forming a limit to the limit ring 80.

[0052] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A quick-adjustable tripod, characterized in that: It comprises an operating component (1), a driving component (8) and at least one set of locking components (2); The operating component (1) comprises a mounting shell (11) and a linkage adjustment component, wherein the mounting shell (11) is connected to the outer leg tube (99), and the linkage adjustment component is arranged on the mounting shell (11) and connected to the driving component (8), and the driving component (8) is rotated relative to the outer leg tube (99) through the linkage adjustment component; The locking component is arranged in the outer leg tube (99), and comprises: A locking sleeve (25) for connecting with the inner leg tube (9); A locking linkage block (22) is coaxially connected to the locking sleeve (25) and is provided for the driving component (8) to pass through and can rotate with the driving component (8); A locking pressure block (23) is sleeved on the locking linkage block (22), and a rolling body (24) protruding from the outer surface of the locking pressure block (23); the locking sleeve (25) can press the rolling body (24) so ​​that the rolling body (24) faces outward and abuts against the inner wall of the outer leg tube (99), thereby limiting the rotation and movement of the inner leg tube (9) relative to the outer leg tube (99); When the operating component (8) causes the driving component (8) to rotate and drives the locking linkage block (22) to rotate, the locking pressure block (23) can be moved relative to the locking sleeve (25) to release the rolling body (24) for unlocking.

2. A quick-adjustable tripod according to claim 1, characterized in that: It comprises a plurality of leg tube assemblies, and the plurality of leg tube assemblies are arranged in stages, and the driving component (8) is connected to the locking components of each group of leg tube assemblies to drive the locking components of the plurality of leg tube assemblies to be unlocked synchronously; Wherein, the leg tube assembly comprises a locking component and an inner leg tube (9).

3. A quick-adjustable tripod according to claim 2, characterized in that: The mounting housing (11) has an inner cavity (101), and the linkage adjustment component comprises: A first linkage block (12) is disposed in the inner cavity (101); a linkage member (13) connected to the driving member (8) and cooperating with the first linkage block (12), and capable of rotating relative to the first linkage block (12) when the first linkage block (12) moves; A reset member (17) is disposed in the inner cavity (101) and is located on the upper side of the first linkage block (12); An operating rod (14) is disposed on the mounting housing (11), and the operating rod (14) can drive the first linkage block (12) to move in the inner cavity (101).

4. The locking structure of the quick-adjustable tripod according to claim 3, characterized in that: The linkage adjustment assembly further comprises a second linkage block (16), the second linkage block (16) being hinged in the mounting housing (11), one end of the second linkage block cooperating with the operating rod (14) and the other end of the second linkage block abutting against the first linkage block (12).

5. The locking structure of the quick-adjustable tripod according to claim 4, characterized in that: The operating rod (14) comprises a hinged portion (141) and a handle portion (142), wherein the hinged portion (141) is hingedly connected to the mounting housing (11), and the operating rod (14) is further provided with a rolling pressing member (15), wherein the rolling pressing member (15) abuts against one end of the second linkage block (16), and the second linkage block (16) can be rotated along the hinge by pressing the handle portion (142).

6. A quick-adjustable tripod according to any one of claims 3 to 5, characterized in that: It also includes a pipe plug (18), which is installed on the lower side of the installation shell (11) and is used to connect with the external leg tube (99), and a plurality of assembly slots (181) are provided on the outer peripheral surface of the pipe plug (18), and a limit installation portion is provided on the inner wall of the external leg tube (99), and the limit installation portion of the external leg tube (99) can be matched with any assembly slot (181).

7. A quick-adjustable tripod according to claim 6, characterized in that: The locking linkage block (22) comprises: Positioning portion (221); A first connection end (222) is disposed on the upper side of the positioning portion (221) and has a threaded connection portion on its outer peripheral surface, and the locking pressure block (23) is sleeved on the first connection end (222) and is located on the upper side of the positioning portion (221); A second connecting end (223) is disposed at the lower side of the positioning portion (221), and the locking sleeve (25) is connected to the second connecting end (223); The mounting hole (2201) passes through the positioning portion (221), the first connecting end (222) and the second connecting end (223), and is used for allowing the driving component (8) to pass through.

8. The quick-adjustable tripod according to claim 7, characterized in that: A position limiting installation structure (231) is also provided on the outer surface of the locking pressure block (23), and the position limiting installation portion of the outer leg tube (99) cooperates with the position limiting installation structure (231) to limit the rotation of the leg tube assembly relative to the outer leg tube (99).

9. The quick-adjustable tripod according to claim 8, characterized in that: The inner wall of the mounting hole (2201) is also provided with a limiting portion (22011) opened in the axial direction, and the outer peripheral surface of the driving component (8) is provided with a limiting structure (801) that cooperates with the limiting portion (22011). The limiting portion (22011) cooperates with the limiting structure (801) so that the locking linkage block (22) can rotate with the driving component (8).

10. The quick-adjustable tripod according to claim 7, characterized in that: The locking pressure block (23) has a locking inner cavity (2301), and a plurality of mounting notches penetrating the locking inner cavity (2301) are provided on the outer circumferential surface of the locking pressure block (23), and the rolling body (24) is arranged on the mounting notches and a part of its surface is placed in the locking inner cavity (2301); The locking sleeve (25) has a pressing portion (251) extending into the locking inner cavity (2301), and the pressing portion (251) abuts against the rolling body (24), so that the rolling body (24) tends to move toward the outside of the locking pressure block (23).

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