Stepless adjustment support foot and screw locking and releasing structure

Abstract

A stepless adjustment support foot and a screw locking and releasing structure. The stepless adjustment support foot comprises: a movable support foot, a bottom support foot, a mounting member and an adjustment member. By means of controlling the deformation of a locking and releasing cavity via the adjustment member, the switch between a locked state and a released state of a connecting portion can be achieved. The screw locking and releasing structure comprises a locking and releasing member and a mounting sleeve. By means of moving the mounting sleeve, the switch between a clamped state and a released state of a screw can be achieved.

Description

Stepless adjustment supporting leg and screw rod lock release structure

[0001] The present application claims priority to Chinese Patent Application No. 202411381617.2, filed on September 30, 2024, and Chinese Patent Application No. 202422398505.X, filed on September 30, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of supporting structures, for example to a stepless adjustment supporting leg and screw rod lock release structure. BACKGROUND

[0003] In mechanical structures, telescopic sleeve structures are commonly used in the mechanical field, and are usually implemented by a combination of a screw rod and a nut sleeve.

[0004] However, although the combination of the screw rod and the nut sleeve can achieve stable and controllable telescopic adjustment, the adjustment speed is slow, especially when the user manually adjusts or needs to remove the screw rod, the screw rod or the nut sleeve needs to be rotated, which is time-consuming and laborious, and the user experience is poor.

[0005] Some furniture on the current market has telescopic supporting legs, which not only meet the height requirements in different use scenarios, but also can flexibly adjust the levelness of the furniture surface, improving the site adaptability.

[0006] However, the current telescopic supporting legs generally rely on threaded structures for length adjustment, which can achieve length adjustment, but the adjustment process is often slow and laborious, affecting the overall user experience. SUMMARY

[0007] The present application provides a stepless adjustment supporting leg and screw rod lock release structure. The stepless adjustment supporting leg controls the deformation of the lock release cavity through the adjusting piece, which can switch between the locked connecting part and the loosened connecting part, and the efficiency of adjusting the supporting height is high, saving manpower and improving user experience. The screw rod lock release structure changes the relative position of the installation sleeve and the lock release piece by moving the installation sleeve, which can switch between the clamped and loosened screw rod states, and the efficiency of adjusting and disassembling is high, saving manpower and improving user experience.

[0008] In a first aspect, the embodiments of the present application provide a stepless adjustment supporting leg, comprising:

[0009] The movable supporting leg has a connecting part.

[0010] The bottom supporting leg is provided with an installation cavity and an adjusting cavity which are in communication with each other.

[0011] a mounting member, the mounting member being provided with a locking release cavity for the connection member to pass through;

[0012] an adjusting member, the adjusting member being movably arranged in the adjusting cavity, and the adjusting member being movably connected with the mounting member;

[0013] when the adjusting member moves to a first position in the adjusting cavity, the locking release cavity is contracted and deformed in a radial direction by the force of the mounting cavity, and the mounting member locks the connection member;

[0014] when the adjusting member moves to a second position in the adjusting cavity, the locking release cavity is expanded and deformed by the force of the mounting cavity, and the mounting member releases the connection member.

[0015] In a second aspect, the embodiments of the present application provide a screw rod locking release structure, comprising:

[0016] a locking release member, the locking release member being provided with a locking release cavity for the screw rod to pass through;

[0017] a mounting sleeve, the mounting sleeve being provided with a mounting cavity, and the locking release member being arranged in the mounting cavity;

[0018] when the locking release member moves in a direction close to the inner wall of the mounting cavity, the locking release cavity is contracted and deformed in a radial direction by the force of the mounting cavity, so that the locking release member locks the screw rod;

[0019] when the locking release member moves in a direction away from the inner wall of the mounting cavity, the locking release cavity is expanded and deformed in a radial direction by the force of the mounting cavity, so that the locking release member releases the screw rod. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a structural schematic diagram of a continuously adjustable supporting foot according to an embodiment of the present application;

[0021] Fig. 2 is an exploded structural schematic diagram of the continuously adjustable supporting foot according to the embodiment of the present application;

[0022] Fig. 3 is a sectional view of the continuously adjustable supporting foot according to the embodiment of the present application;

[0023] Fig. 4 is a structural schematic diagram of a bottom supporting foot according to the embodiment of the present application;

[0024] Fig. 5 is an internal structural schematic diagram of the bottom supporting foot according to the embodiment of the present application;

[0025] Fig. 6 is a structural schematic diagram of a mounting member according to the embodiment of the present application;

[0026] Figure 7 is a structural schematic diagram of the mounting member and the lock release block according to the first embodiment of the present application;

[0027] Figure 8 is a sectional view of the mounting member and the lock release block according to the first embodiment of the present application;

[0028] Figure 9 is a structural schematic diagram of the bottom support and the adjusting member according to the first embodiment of the present application;

[0029] Figure 10 is a structural schematic diagram of the adjusting member according to the first embodiment of the present application;

[0030] Figure 11 is a structural schematic diagram of the adjusting member according to the first embodiment of the present application;

[0031] Figure 12 is a structural schematic diagram of the screw lock release structure according to the second embodiment of the present application;

[0032] Figure 13 is a schematic diagram of the screw lock release structure according to the second embodiment of the present application when clamping the screw;

[0033] Figure 14 is a schematic diagram of the screw lock release structure according to the second embodiment of the present application when loosening the screw;

[0034] Figure 15 is a structural schematic diagram of the lock release member according to the second embodiment of the present application;

[0035] Figure 16 is a sectional view of the lock release member according to the second embodiment of the present application;

[0036] Figure 17 is a partial structural schematic diagram of the lock release member according to the second embodiment of the present application;

[0037] Figure 18 is a structural schematic diagram of the mounting sleeve according to the second embodiment of the present application;

[0038] Figure 19 is a sectional view of the mounting sleeve according to the second embodiment of the present application.

[0039] Correspondence between reference signs and component names in Figures 1-11 is as follows: 10, movable support leg; 11, connecting portion; 12, sleeve portion; 20, bottom support leg; 201, mounting cavity; 2011, support surface; 202, adjusting cavity; 203, movable cavity; 21, inner cylinder portion; 22, outer cylinder portion; 23, stop boss; 24, stop baffle; 241, clearance gap; 25, connecting piece; 26, second positioning surface; 27, fourth positioning surface; 28, scale; 1, adjusting groove; 2, adjusting tooth; 30, mounting piece; 301, lock release cavity; 302, through cavity; 31, mounting portion; 311, third positioning surface; 32, deformation portion; 321, mounting position; 322, push surface; 323, first positioning surface; 33, separation groove; 34, connecting groove; 35, mounting gap; 40, adjusting piece; 401, adjusting hole; 41, limiting protrusion; 42, stop flange; 43, demolding groove; 44, reinforcing piece; 45, rotating piece; 46, indication mark; 50, lock release block; 51, locking surface; 52, push receiving surface;

[0040] Correspondence between reference signs and component names in Figures 12-19 is as follows: 11, screw rod; 20, mounting sleeve; 201, mounting cavity; 2011, support surface; 203, movable cavity; 26, second positioning surface; 27, fourth positioning surface; 30, lock release piece; 301, lock release cavity; 303, lock release portion; 304, moving portion; 3041, clearance cavity; 31, main body portion; 311, third positioning surface; 32, movable portion; 322, force receiving surface; 323, first positioning surface; 33, separation groove; 34, connecting groove; 35, mounting gap; 50, clamping portion; 501, clamping groove. DETAILED DESCRIPTION

[0041] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the meaning of the above terms in the present application can be understood as appropriate.

[0042] In the present application, unless specifically defined and limited otherwise, the "on" or "under" of a first feature to a second feature can include that the first feature and the second feature are in direct contact, or that the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "over" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or indicates that the first feature is higher in horizontal height than the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or indicates that the first feature is lower in horizontal height than the second feature.

[0043] In the description of the present embodiment, the terms "upper", "lower", "right", "left", etc. orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0044] Embodiment one:

[0045] The present embodiment provides a stepless adjustment support foot for supporting devices such as furniture, office equipment, mechanical equipment, etc., which can realize adjustment of the support height. As shown in FIGS. 1-11, the stepless adjustment support foot includes a movable support foot 10, a bottom support foot 20, a mounting piece 30 and an adjusting piece 40, wherein the movable support foot 10 has a connecting portion 11, the bottom support foot 20 is provided with a mounting cavity 201 and an adjusting cavity 202 which are in communication with each other, the mounting piece 30 is provided through the mounting cavity 201, the mounting piece 30 is provided with a lock release cavity 301 for the connecting portion 11 to pass through, the adjusting piece 40 is at least partially movably arranged in the adjusting cavity 202, and the adjusting piece 40 is movably connected with the mounting piece 30.

[0046] When the adjusting member 40 moves to the first position in the adjusting cavity 202, the lock release cavity 301 is radially deformed by the force of the mounting cavity 201 to lock the connecting part 11; when the adjusting member 40 moves to the second position in the adjusting cavity 202, the mounting cavity 201 releases the force on the lock release cavity 301, and the lock release cavity 301 is expanded and deformed, and the mounting member 30 is unlocked from the connecting part 11. The stepless adjusting support leg provided in the embodiment is telescopic by moving the movable support leg 10 relative to the bottom support leg 20, the mounting member 30 is arranged in the mounting cavity 201 of the bottom support leg 20, the lock release cavity 301 for the connecting part 11 is arranged in the mounting member 30, the adjusting member 40 is movably connected with the mounting member 30, and the adjusting member 40 can drive the mounting member 30 to change the position of the mounting member 30 relative to the bottom support leg 20, so that the lock release cavity 301 is contracted or expanded to lock or unlock the connecting part 11. When the lock release cavity 301 is unlocked from the connecting part 11, the user can directly pull the movable support leg 10 to adjust the distance between the movable support leg 10 and the bottom support leg 20, and the stepless adjustment is realized. In summary, the stepless adjusting support leg provided in the embodiment does not need to adjust the support height by rotating the movable support leg 10, the user can control the deformation of the lock release cavity 301 by the adjusting member 40, and the stepless adjusting support leg can be switched between the locked state and the unlocked state of the connecting part 11, the efficiency of adjusting the support height is high, the manpower is saved, and the user experience is improved.

[0047] For example, as shown in FIGS. 1-3, the movable support leg 10 further includes a sleeve part 12, the upper end of the connecting part 11 is fixedly connected with the sleeve part 12, the sleeve part 12 is sleeved on the outside of the bottom support leg 20, and the top of the sleeve part 12 is arranged to connect or support the bottom of a furniture or the like.

[0048] For example, as shown in FIGS. 1-3, the connecting part 11 is arranged in a rod structure extending in the vertical direction. In the embodiment, the connecting part 11 is a screw rod, and the outer periphery of the screw rod is provided with external threads to facilitate clamping and locking.

[0049] For example, as shown in FIGS. 3 and 5, the bottom support leg 20 includes an inner cylinder part 21 and an outer cylinder part 22, the inner cavity of the inner cylinder part 21 defines the mounting cavity 201, and a movable cavity 203 is further arranged in the inner cylinder part 21, the upper end of the movable cavity 203 is communicated with the mounting cavity 201, the lower end of the movable cavity 203 is communicated with the adjusting cavity 202, the outer cylinder part 22 is arranged around the outer periphery of the inner cylinder part 21, the adjusting cavity 202 is formed between the inner cylinder part 21 and the outer cylinder part 22, and the adjusting member 40 can be hidden in the adjusting cavity 202.

[0050] For example, as shown in FIG. 4, the outer wall of the outer cylinder part 22 is provided with a scale 28 extending in the vertical direction, when the sleeve part 12 is lifted or lowered, the bottom end of the sleeve part 12 changes the position corresponding to the scale 28 to indicate the telescopic length of the stepless adjusting support leg.

[0051] As shown in FIGS. 6-8, the mounting member 30 includes a mounting portion 31 and a plurality of deformation portions 32, which are oppositely arranged and outwardly extended from the mounting portion 31, and together form a lock release cavity 301, the mounting portion 31 is arranged in the mounting cavity 201, and the adjusting member 40 is movably connected with the mounting portion 31. In the embodiment, the deformation portions 32 are arranged at the upper end of the mounting portion 31, and the mounting member 30 includes two deformation portions 32, which are symmetrically and spacedly arranged, and form a separation groove 33 therebetween, which provides sufficient space for the deformation of the two deformation portions 32. In some embodiments, the separation groove 33 extends to the mounting portion 31 to expand the deformation space between the two deformation portions 32, and the deformation range of the lock release cavity 301 is also larger.

[0052] As shown in FIGS. 6-8, the mounting member 30 includes a mounting portion 31 and a plurality of deformation portions 32, which are oppositely arranged and outwardly extended from the mounting portion 31, and together form a lock release cavity 301, the mounting portion 31 is arranged in the mounting cavity 201, and the adjusting member 40 is movably connected with the mounting portion 31. In the embodiment, the deformation portions 32 are arranged at the upper end of the mounting portion 31, and the mounting member 30 includes two deformation portions 32, which are symmetrically and spacedly arranged, and form a separation groove 33 therebetween, which provides sufficient space for the deformation of the two deformation portions 32. In some embodiments, the separation groove 33 extends to the mounting portion 31 to expand the deformation space between the two deformation portions 32, and the deformation range of the lock release cavity 301 is also larger.

[0053] As shown in FIGS. 6-8, the mounting member 30 includes a mounting portion 31 and a plurality of deformation portions 32, which are oppositely arranged and outwardly extended from the mounting portion 31, and together form a lock release cavity 301, the mounting portion 31 is arranged in the mounting cavity 201, and the adjusting member 40 is movably connected with the mounting portion 31. In the embodiment, the deformation portions 32 are arranged at the upper end of the mounting portion 31, and the mounting member 30 includes two deformation portions 32, which are symmetrically and spacedly arranged, and form a separation groove 33 therebetween, which provides sufficient space for the deformation of the two deformation portions 32. In some embodiments, the separation groove 33 extends to the mounting portion 31 to expand the deformation space between the two deformation portions 32, and the deformation range of the lock release cavity 301 is also larger.

[0054] Exemplarily, as shown in FIG. 2, FIG. 7 and FIG. 8, the stepless adjustment support foot further comprises a lock release block 50, which is arranged in the lock release cavity 301 and abuts against the inner wall of the lock release cavity 301; when the lock release cavity 301 is deformed to contract, the lock release block 50 is driven to move towards the connecting part 11 to abut against the connecting part 11; when the lock release cavity 301 is deformed to expand, the lock release block 50 is driven to move away from the connecting part 11 to release the connecting part 11.

[0055] In some embodiments, as shown in FIG. 6, the inner wall of the lock release cavity 301 is provided with a mounting position 321 for configuring the lock release block 50. Exemplarily, the mounting position 321 is provided as a groove structure extending in the radial direction and penetrating through the deformed part 32, the lock release block 50 is arranged in the mounting position 321 and can slide in the mounting position 321 relative to the deformed part 32. Exemplarily, the lock release block 50 is slid in the mounting position 321, and when the lock release cavity 301 is deformed to contract, the two lock release blocks 50 are driven to slide in the corresponding mounting positions 321 and move close to each other.

[0056] In some embodiments, the lock release block 50 can be at least partially configured in the mounting position 321.

[0057] In some embodiments, as shown in FIG. 6, the mounting position 321 is provided as a through groove structure, both ends of which in the radial direction are provided with openings, so that the support surface 2011 can also directly apply force to the outside of the lock release block 50 to directly push the lock release block 50 to abut against the connecting part 11. In addition, the lock release block 50 can be loaded into the mounting position 321 through any opening of the mounting position 321.

[0058] Exemplarily, as shown in FIG. 7 and FIG. 8, the inner side of the lock release block 50 is provided with a locking surface 51, which is provided as a concave arc surface structure and can match with screw rods of various sizes, the locking surface 51 is provided with a locking thread matched with the screw rod, which can be provided as an internal thread structure or a plurality of groove structures distributed in the axial direction.

[0059] In some embodiments, the axial direction refers to the direction along the axis of the connecting part 11 or the mounting part 30 (i.e. the vertical direction, as shown in FIG. 2); the radial direction refers to the direction perpendicular to the axis, i.e. the horizontal direction.

[0060] Exemplarily, as shown in FIG. 7 and FIG. 8, the outer side of the lock release block 50 is provided with a push-receiving surface 52, the inclination direction of which is the same as that of the push surface 322, and the support surface 2011 can apply force to the push-receiving surface 52.

[0061] Exemplarily, the deformation portion 32 is made of elastic material such as rubber, and the lock releasing block 50 is made of metal material or material with rigidity greater than that of the deformation portion 32. In the natural state, the deformation portion 32 has a tendency to expand radially outward, and gradually expands outward under the elastic force of itself during the movement of the deformation portion 32 away from the installation cavity 201.

[0062] Exemplarily, the installation portion 31 is made of rigid material such as metal, and the deformation portion 32 expands radially outward when the installation portion 31 is controlled to press the deformation portion 32.

[0063] Exemplarily, as shown in FIG. 8, the installation member 30 is provided with a through cavity 302 for the connection portion 11 to pass through, the upper end of the through cavity 302 is communicated with the lock releasing cavity 301, and the lower end of the through cavity 302 is communicated with the adjusting cavity 202.

[0064] Exemplarily, as shown in FIGS. 5 and 6, the outer wall of the deformation portion 32 is provided with a first positioning surface 323, and the installation cavity 201 is provided with a second positioning surface 26, when the installation member 30 is installed in the installation cavity 201, the first positioning surface 323 is abutted with the second positioning surface 26 to limit the self-rotation of the installation member 30 around its own axis in the inner cylinder portion 21, and keep the posture of the installation member 30 stable.

[0065] Exemplarily, the first positioning surface 323 and the second positioning surface 26 are respectively provided with two symmetrical ones, to improve the stability of preventing the self-rotation of the installation member 30.

[0066] Exemplarily, as shown in FIGS. 5 and 6, the outer wall of the installation portion 31 is provided with a third positioning surface 311, and the through cavity 302 is provided with a fourth positioning surface 27, when the installation member 30 is installed in the installation cavity 201, the third positioning surface 311 is abutted with the fourth positioning surface 27 to limit the self-rotation of the installation member 30 around its own axis in the inner cylinder portion 21, and keep the posture of the installation member 30 stable.

[0067] Exemplarily, the third positioning surface 311 and the fourth positioning surface 27 are respectively provided with two symmetrical ones, to improve the stability of preventing the self-rotation of the installation member 30.

[0068] Exemplarily, as shown in FIGS. 3, 9-11, the adjusting member 40 is provided with an adjusting hole 401, and the inner cylinder portion 21 at least partially extends into the adjusting hole 401.

[0069] In some embodiments, the adjusting member 40 is provided with an adjusting slot 1 on one of the bottom support leg 20 and the adjusting tooth 2 on the other, the adjusting tooth 2 is inserted into the adjusting slot 1, when the adjusting tooth 2 slides along the adjusting slot 1, the adjusting member 40 moves between the first position and the second position relative to the bottom support leg 20. For example, one of the outer wall of the inner cylinder portion 21 and the inner wall of the adjusting hole 401 is provided with the adjusting slot 1, and the other is provided with the adjusting tooth 2, the adjusting tooth 2 is inserted into the adjusting slot 1, when the adjusting tooth 2 slides along the adjusting slot 1, the adjusting member 40 rises or falls relative to the inner cylinder portion 21.

[0070] For example, the adjusting member 40 and the inner cylinder portion 21 are connected by the cooperation of the adjusting tooth 2 and the adjusting slot 1, when the user twists the adjusting member 40, the adjusting member 40 rotates relative to the inner cylinder portion 21, the adjusting tooth 2 slides along the adjusting slot 1, at this time, the adjusting member 40 rises or falls relative to the bottom support leg 20, and the locking relationship between the mounting member 30 and the connecting portion 11 of the movable support leg 10 also changes. On the one hand, the user can effectively control the speed and amplitude of the adjusting member 40 rising or falling relative to the bottom support leg 20 by twisting the adjusting member 40 to drive the lifting; on the other hand, after the user releases the adjusting member 40, the cooperation between the adjusting tooth 2 and the adjusting slot 1 through the friction force plays a self-locking role in the lifting of the adjusting member 40, so as to stably keep the adjusting member 40 at the original height position.

[0071] In the present embodiment, as shown in FIGS. 3 and 4, the adjusting tooth 2 is arranged on the inner wall of the adjusting hole 401, and the adjusting slot 1 is arranged on the outer wall of the inner cylinder portion 21.

[0072] In other embodiments, the adjusting tooth 2 is arranged on the outer wall of the inner cylinder portion 21, and the adjusting slot 1 is arranged on the inner wall of the adjusting hole 401.

[0073] For example, as shown in FIGS. 3 and 4, the adjusting tooth 2 is a helical tooth, and the adjusting slot 1 is a helical slot, the adjusting tooth 2 is arranged to extend around the axial direction of the adjusting hole 401, and correspondingly, the adjusting slot 1 is arranged to extend around the axial direction of the inner cylinder portion 21. When the adjusting member 40 is sleeved on the inner cylinder portion 21, the adjusting tooth 2 (helical tooth) is embedded in the adjusting slot 1 (helical slot), both of which extend helically around the same axial direction, and the friction force between the helical tooth and the helical slot plays a guiding and self-locking role in the lifting of the adjusting member 40, which can control the movement direction and speed of the adjusting member 40, and also can stably keep the adjusting member 40 at the original height position when losing external force.

[0074] In other embodiments of the present application, the adjusting groove 1 can also be configured to extend along an "S" shape or other smooth curved path, and the adjusting tooth 2 can be adapted to the shape of the adjusting groove 1 and the extending path, or the adjusting tooth 2 can be directly configured as a cylindrical structure, a polygonal column structure or a special-shaped structure, and the adjusting tooth 2 is inserted into the adjusting groove 1 and can slide along the adjusting groove 1. In this process, the relative position between the adjusting tooth 2 and the adjusting groove 1 changes, thereby realizing the change in the height of the adjusting member 40 relative to the inner cylinder portion 21. The adjusting tooth 2 and the adjusting groove 1 can control the speed and amplitude of the lifting by increasing the friction therebetween.

[0075] For example, the adjusting member 40 is rotationally connected to the lower end of the mounting portion 31. As shown in FIG. 6, the lower end of the mounting portion 31 is provided with a connecting groove 34, which is formed on the outer wall of the mounting portion 31 around the circumference and is configured to movably connect the adjusting member 40. For example, the adjusting member 40 is rotationally connected to the mounting portion 31 through the connecting groove 34, and the connecting groove 34 axially limits the adjusting member 40. When the adjusting member 40 rotates relative to the base 20, the mounting member 30 is lifted. The first positioning surface 323, the second positioning surface 26, the third positioning surface 311 and the fourth positioning surface 27 are configured to prevent the mounting member 30 from rotating with the adjusting member 40 and to keep the original posture of the mounting member 30.

[0076] For example, as shown in FIG. 6, the end of the mounting portion 31 is also provided with a mounting gap 35, which extends along the axial direction of the mounting portion 31 and is in communication with the connecting groove 34. The mounting gap 35 is configured to provide sufficient space for the contraction and deformation of the mounting portion 31, so as to facilitate the clamping of the adjusting member 40.

[0077] For example, as shown in FIG. 9, at least one connecting piece 25 is arranged in the adjusting cavity 202. The first end of the connecting piece 25 is connected to the outer wall of the inner cylinder portion 21, and the second end of the connecting piece 25 is connected to the inner wall of the outer cylinder portion 22, so as to strengthen the connection strength of the inner cylinder portion 21 and the outer cylinder portion 22.

[0078] For example, the inner cylinder portion 21 and the outer cylinder portion 22 are integrally formed and are made of metal alloy or plastic.

[0079] In some embodiments, when the adjusting member 40 moves in the adjusting cavity 202, the adjusting member 40 has an upper limit position. The upper limit position of the adjusting member 40 is defined by at least one of the following: a limiting protrusion 41 is arranged in the adjusting hole 401 and extends around the circumference of the adjusting hole 401. The limiting protrusion 41 can abut against the lower end of the inner cylinder portion 21 to define the upper limit position of the adjusting member 40; or the outer wall of the inner cylinder portion 21 is provided with a stop protrusion 23, which can abut against the upper end of the adjusting member 40 to define the upper limit position of the adjusting member 40.

[0080] As shown in Figs. 9-11, the bottom of the adjusting hole 401 is provided with a limiting protrusion 41, which is arranged around the circumference of the adjusting hole 401 and protrudes from the bottom of the adjusting hole 401. The outer diameter of the inner cylinder portion 21 is greater than the inner diameter of the limiting protrusion 41, so that when the adjusting member 40 is raised relative to the inner cylinder portion 21, the limiting protrusion 41 can abut against the lower end of the inner cylinder portion 21 to define the upper limit position that the adjusting member 40 can reach.

[0081] As shown in Fig. 5, the outer wall of the inner cylinder portion 21 is provided with a stop protrusion 23, which can abut against the upper end of the adjusting member 40 to define the upper limit position that the adjusting member 40 can reach. The stop protrusion 23 is arranged around the circumference of the inner cylinder portion 21 and forms an annular protrusion structure, which can abut against the upper end of the adjusting member 40 to define the upper limit position that the adjusting member 40 can reach when the adjusting member 40 is raised relative to the inner cylinder portion 21.

[0082] As shown in Figs. 9-11, the adjusting cavity 202 is provided with a stop baffle 24, and the outer wall of the adjusting member 40 is provided with a stop flange 42, which can abut against the stop baffle 24 to define the upper limit position that the adjusting member 40 can reach when the adjusting member 40 is raised relative to the inner cylinder portion 21. It can be seen that the limiting protrusion 41, the stop protrusion 23, and the stop baffle 24 and the stop flange 42 have the same effect, which is to limit the degree of mutual approach of the inner cylinder portion 21 and the adjusting member 40 and to play a limiting protection role. The stroke limitation of each set of limiting protection structures can be the same or different, and when the limiting protection structure with smaller stroke limitation fails, the remaining limiting protection structures can play a bottom protection role to improve the fault tolerance.

[0083] In this embodiment, as shown in Fig. 5, the stop baffle 24 is connected to the outer wall of the inner cylinder portion 21 and the inner wall of the outer cylinder portion 22 at the same time. The inner side of the stop baffle 24 is connected to the outer wall of the inner cylinder portion 21, and the outer side of the stop baffle 24 is connected to the inner wall of the outer cylinder portion 22, which can also play a role in strengthening the connection strength of the inner cylinder portion 21 and the outer cylinder portion 22. In other embodiments, the stop baffle 24 can be connected to only the outer wall of the inner cylinder portion 21 or the inner wall of the outer cylinder portion 22 to simplify the structure and reduce the processing difficulty.

[0084] As shown in Fig. 5, the stop baffle 24 is provided with a clearance notch 241 on the side close to the inner cylinder portion 21, which is arranged to avoid the main body of the adjusting member 40. As shown in Fig. 5, the stop flange 42 is arranged around the bottom of the adjusting member 40. When the adjusting member 40 is raised, the main body of the adjusting member 40 penetrates into the clearance notch 241 and does not interfere with the stop baffle 24 or affect the abutting contact between the stop baffle 24 and the stop flange 42.

[0085] Exemplarily, the adjusting member 40 is formed by an injection molding process or a casting process, the stop flange 42 extends around the circumference of the adjusting member 40 and is arranged on one side of the adjusting member 40, and a demolding groove 43 is arranged on the stop flange 42 and extends around the circumference of the adjusting member 40. The demolding groove 43 is arranged to reduce the difficulty of demolding, reduce process defects, and improve product qualification rate.

[0086] Exemplarily, as shown in FIGS. 10 and 11, the outer wall of the adjusting member 40 is further provided with at least one reinforcing sheet 44, the reinforcing sheet 44 extends away from the stop flange 42, one side of the reinforcing sheet 44 is connected to the outer wall of the adjusting member 40, and the lower end of the reinforcing sheet 44 is connected to the stop flange 42. The reinforcing sheet 44 is arranged to improve the connection strength between the stop flange 42 and the main body of the adjusting member 40, and reduce the risk of the stop flange 42 falling off or partially falling off.

[0087] Exemplarily, as shown in FIG. 11, the bottom of the adjusting member 40 is further provided with at least one rotating sheet 45, the rotating sheet 45 is used for the user to rotate the adjusting member 40, and a chamfer is arranged on the rotating sheet 45 to avoid scratching the user. In this embodiment, two rotating sheets 45 are arranged symmetrically on both sides of the adjusting hole 401, which is convenient for the user to grab and rotate.

[0088] Exemplarily, as shown in FIG. 11, the bottom of the adjusting member 40 is further provided with an indication 46, the indication 46 is arranged to indicate the unlocking and locking directions corresponding to the rotating action of the adjusting member 40, and improve the convenience of use.

[0089] Embodiment Two:

[0090] As shown in FIGS. 12-19, the present embodiment provides a screw lock release structure for selectively clamping the screw 11. When the screw lock release structure clamps the screw 11, the screw 11 is kept at a set extension length. When the screw lock release structure releases the screw 11, the user can directly pull the screw 11 to adjust the extension length of the screw 11 or take out the screw 11. The screw lock release structure comprises a lock release member 30 and a mounting sleeve 20, the lock release member 30 is provided with a lock release cavity 301 for the screw 11 to pass through, the mounting sleeve 20 is provided with a mounting cavity 201, and the lock release member 30 is arranged in the mounting cavity 201.

[0091] When the lock release member 30 moves in the direction close to the inner wall of the mounting cavity 201, that is, vertically downward, the lock release cavity 301 is subjected to the force of the mounting cavity 201 in the radial direction and shrinks and deforms, so as to lock the screw 11 by the lock release member 30. When the lock release member 30 moves in the direction away from the inner wall of the mounting cavity 201, that is, vertically upward, the lock release cavity 301 loses the force of the mounting cavity 201 in the radial direction and expands and deforms, so as to release the screw 11 by the lock release member 30.

[0092] The screw locking and releasing structure provided in the embodiment is characterized in that the locking and releasing member 30 is arranged in the mounting sleeve 20, the locking and releasing member 30 is internally provided with a locking and releasing cavity 301 for the screw 11 to pass through, and the locking and releasing member 30 can move in the mounting sleeve 20 to selectively clamp or release the screw 11. A user can manually pull the locking and releasing member 30 to move axially in the mounting sleeve 20: when the locking and releasing member 30 moves in a direction close to the mounting sleeve 20, the locking and releasing cavity 301 is contracted radially inward, so that the locking and releasing member 30 clamps the screw 11; when the locking and releasing member 30 moves in a direction away from the mounting sleeve 20, the locking and releasing cavity 301 is expanded radially outward, so that the locking and releasing member 30 releases the screw 11, and at this time, the user can directly pull the screw 11 to adjust the position of the screw 11 or take out the screw 11. In summary, the screw locking and releasing structure provided in the embodiment does not need to adjust the position of the screw 11 by screwing, but the user can switch between the clamping and releasing states of the screw 11 by moving the locking and releasing member 30 to change the relative position of the locking and releasing member 30 and the mounting sleeve 20, so that the efficiency of adjustment and disassembly is high, manpower is saved, and user experience is improved.

[0093] For example, as shown in FIGS. 15-17, the locking and releasing member 30 includes a main body part 31, at least two locking and releasing parts 303, and a moving part 304. The at least two locking and releasing parts 303 extend outward from the main body part 31 and are arranged at intervals. The moving part 304 extends from the main body part 31 in a direction away from the locking and releasing parts 303. The moving part 304 is internally provided with a clearance cavity 3041 that is in communication with the locking and releasing cavity 301. The clearance cavity 3041 is arranged for the screw 11 to pass through. The mounting sleeve 20 further includes a movable cavity 203 that is in communication with the mounting cavity 201. The moving part 304 passes through the movable cavity 203. For example, the locking and releasing parts 303 are arranged at the upper end of the main body part 31. The moving part 304 is arranged at the lower end of the main body part 31.

[0094] In some embodiments, as shown in FIGS. 15-17, the at least two locking and releasing parts 303 form the locking and releasing cavity 301 therebetween. Adjacent two locking and releasing parts 303 form a separation groove 33 therebetween. The locking and releasing parts 303 are in close contact with the mounting cavity 201. When the locking and releasing parts 303 are separated from the mounting cavity 201 upward, the locking and releasing parts 303 are gradually deformed and expanded. The locking and releasing cavity 301 is gradually increased to release the screw 11.

[0095] In the embodiment, as shown in FIGS. 15-17, the locking and releasing member 30 includes two locking and releasing parts 303. The two locking and releasing parts 303 are symmetrical and arranged at intervals. A separation groove 33 is formed between the two locking and releasing parts 303. The separation groove 33 extends to the main body part 31. The separation groove 33 provides sufficient space for the deformation of the two locking and releasing parts 303.

[0096] As shown in FIGS. 12-19, the outer circumferential surface of the lock release portion 303 is provided with a force receiving surface 322, and the mounting cavity 201 is provided with a support surface 2011. When the lock release member 30 moves in a direction approaching the support surface 2011, the force receiving surface 322 receives a support force from the support surface 2011 in the radial direction, and the lock release portion 303 moves towards the support surface 2011 and controls the lock release cavity 301 to shrink and deform inwardly. As an example, the radial dimension of the lock release portion 303 gradually increases from bottom to top to form a downwardly inclined force receiving surface 322, and the upper end of the mounting cavity 201 is formed as a gradually expanding structure with a radial dimension gradually increasing from bottom to top to form an upwardly inclined support surface 2011. Therefore, when the lock release member 30 moves downwardly, or when the screw rod 11 is subjected to a downward pressure, the force receiving surface 322 presses against the support surface 2011, and as the distance of downward movement or the downward load gradually increases, the support force of the support surface 2011 on the force receiving surface 322 also gradually increases, and the tightening degree of the lock release portion 303 by the mounting sleeve 20 also gradually increases, and the screw rod 11 is increasingly clamped, thus having excellent locking stability.

[0097] As shown in FIGS. 15-17, the lock release portion 303 includes movable portions 32 and clamping portions 50. The movable portions 32 extend outwardly from the main body portion 31 and are oppositely arranged. The clamping portions 50 are embedded in the movable portions 32, and the lock release cavities 301 are formed between the clamping portions 50. The separation grooves 33 are formed between adjacent two movable portions 32, and the movable portions 32 are in close contact with the mounting cavity 201.

[0098] As shown in FIGS. 16 and 17, the inner side of the clamping portion 50 is provided with clamping threads 501 adapted to the outer threads of the screw rod 11, so as to improve the clamping degree between the clamping portion 50 and the screw rod 11 and improve the stability. In some embodiments, the clamping threads 501 can be internal threads or a plurality of groove structures arranged in the vertical direction.

[0099] As an example, the movable portions 32 and the clamping portions 50 are integrally formed.

[0100] As an example, the movable portions 32 and the clamping portions 50 are made of rubber or plastic, and the hardness of the movable portions 32 is less than that of the clamping portions 50, or the elasticity of the movable portions 32 is greater than that of the clamping portions 50.

[0101] As an example, the movable portions 32 are made of elastic materials such as rubber or plastic, and the clamping portions 50 are made of metal materials.

[0102] Exemplarily, as shown in FIG. 14, FIG. 15, FIG. 16 and FIG. 19, the outer wall of the locking release part 303 is provided with a first positioning surface 323, and the mounting cavity 201 is provided with a second positioning surface 26, when the locking release part 30 is mounted in the mounting cavity 201, the first positioning surface 323 is in contact with the second positioning surface 26, so as to limit the self-rotation of the locking release part 30 around its own axis in the mounting sleeve 20, and keep the posture of the locking release part 30 stable.

[0103] Exemplarily, the first positioning surface 323 and the second positioning surface 26 are respectively provided with two symmetrical ones, which improves the stability of preventing the self-rotation of the locking release part 30.

[0104] Exemplarily, as shown in FIG. 14, FIG. 15, FIG. 16, FIG. 18 and FIG. 19, the outer wall of the moving part 304 is provided with a third positioning surface 311, and the movable cavity 203 is provided with a fourth positioning surface 27, when the locking release part 30 is mounted in the mounting cavity 201, the third positioning surface 311 is in contact with the fourth positioning surface 27, so as to limit the self-rotation of the locking release part 30 around its own axis in the mounting sleeve 20, and keep the posture of the locking release part 30 stable.

[0105] Exemplarily, the third positioning surface 311 and the fourth positioning surface 27 are respectively provided with two symmetrical ones, which improves the stability of preventing the self-rotation of the locking release part 30.

[0106] Exemplarily, the screw locking release structure further comprises a fixing part, as shown in FIG. 15, the end of the moving part 304 is provided with a connecting groove 34, the connecting groove 34 is provided on the outer wall of the moving part 304 around the circumference, and the connecting groove 34 is provided to connect the fixing part. Exemplarily, the fixing part is rotationally connected with the moving part 304 through the connecting groove 34, and the fixing part can be connected with the mounting sleeve 20 through a threaded structure or the like, when the fixing part rotates relative to the mounting sleeve 20, the locking release part 30 is lifted, and the first positioning surface 323, the second positioning surface 26, the third positioning surface 311 and the fourth positioning surface 27 are provided so that the locking release part 30 does not rotate with the fixing part, and keeps the original posture to lift.

[0107] In some embodiments, the fixing part mentioned in the embodiment can be understood as a component corresponding to the adjusting part 40 in the first embodiment; the fixing part and the adjusting part 40 can be regarded as consistent expressions of the same component in different embodiment scenarios, and the core structure and the realized function can be kept completely corresponding.

[0108] Exemplarily, as shown in FIG. 15, the end of the moving part 304 is further provided with a mounting gap 35, the mounting gap 35 is provided along the axial direction of the moving part 304, the mounting gap 35 is in communication with the connecting groove 34, and the provision of the mounting gap 35 makes the moving part 304 have sufficient contraction deformation space to facilitate the clamping of the fixing part.

Claims

1. A continuously adjustable supporting leg, comprising: a movable supporting leg (10) having a connecting portion (11); a bottom supporting leg (20) having a mounting cavity (201) and an adjusting cavity (202) in communication with each other; a mounting member (30) penetrating the mounting cavity (201), the mounting member (30) being provided with a lock releasing cavity (301) for the connecting portion (11) to penetrate; an adjusting member (40) movably arranged in the adjusting cavity (202), the adjusting member (40) being movably connected with the mounting member (30); when the adjusting member (40) moves to a first position in the adjusting cavity (202), the lock releasing cavity (301) is contracted and deformed in a radial direction by the force from the mounting cavity (201), and the mounting member (30) locks the connecting portion (11); when the adjusting member (40) moves to a second position in the adjusting cavity (202), the mounting cavity (201) releases the force on the lock releasing cavity (301) in a radial direction, and the lock releasing cavity (301) is expanded and deformed, and the mounting member (30) releases the connecting portion (11).

2. The steplessly adjustable support foot according to claim 1, wherein, The mounting member (30) comprises a mounting portion (31) and a plurality of deformation portions (32) extending outward from the mounting portion (31) and oppositely arranged, and all the deformation portions (32) together form the lock releasing cavity (301), the mounting portion (31) penetrates the mounting cavity (201), and the adjusting member (40) is movably connected with the mounting portion (31).

3. The steplessly adjustable support foot of claim 1, further comprising: A lock releasing block (50) is arranged in the lock releasing cavity (301) and tightly abuts the inner wall of the lock releasing cavity (301); when the lock releasing cavity (301) is contracted and deformed, the lock releasing block (50) is driven to move towards the connecting portion (11) to tightly abut the connecting portion (11); when the lock releasing cavity (301) is expanded and deformed, the lock releasing block (50) is driven to move away from the connecting portion (11) to release the connecting portion (11).

4. The steplessly adjustable support foot according to claim 3, wherein, An installation site (321) is arranged on the inner wall of the lock releasing cavity (301), and the lock releasing block (50) is at least partially arranged in the installation site (321).

5. The stepless adjustment support foot according to claim 1, wherein, The mounting member (30) is provided with a through cavity (302) for the connecting portion (11) to penetrate, and the through cavity (302) is in communication with the lock releasing cavity (301).

6. The stepless adjustment support foot according to claim 1, wherein, The bottom supporting leg (20) comprises an inner cylinder portion (21), and the inner cavity of the inner cylinder portion (21) defines the mounting cavity (201); the adjusting member (40) is provided with an adjusting hole (401), and the inner cylinder portion (21) at least partially extends into the adjusting hole (401).

7. The continuously adjustable support foot according to claim 6, wherein The bottom supporting leg (20) further comprises an outer cylinder portion (22) arranged around the outer periphery of the inner cylinder portion (21), and the adjusting cavity (202) is formed between the inner cylinder portion (21) and the outer cylinder portion (22).

8. The stepless adjustment support foot according to claim 1, wherein, The adjusting member (40) is provided with an adjusting groove (1) on one of the bottom support legs (20) and an adjusting tooth (2) on the other, the adjusting tooth (2) is inserted into the adjusting groove (1), when the adjusting tooth (2) slides along the adjusting groove (1), the adjusting member (40) moves relative to the bottom support leg (20) between the first position and the second position.

9. The steplessly adjustable support foot according to claim 6, wherein, The upper limit position of the adjusting member (40) is defined by at least one of the following: A limiting protrusion (41) is arranged in the adjusting hole (401), the limiting protrusion (41) is arranged around the circumference of the adjusting hole (401), the limiting protrusion (41) can abut against the lower end of the inner cylinder (21) to define the upper limit position of the adjusting member (40); or The outer wall of the inner cylinder (21) is provided with a stop boss (23), the stop boss (23) can abut against the upper end of the adjusting member (40) to define the upper limit position of the adjusting member (40).

10. The stepless adjustment support foot according to claim 1, wherein, The movable support leg (10) further comprises a sleeve part (12), the upper end of the connecting part (11) is fixedly connected with the sleeve part (12), the sleeve part (12) is sleeved on the outside of the bottom support leg (20).

11. A screw lock release structure, comprising: A lock release member (30) provided with a lock release cavity (301) for the screw (11) to pass through; A mounting sleeve (20) provided with a mounting cavity (201) inside; the lock release member (30) is arranged in the mounting cavity (201); When the lock release member (30) moves in the direction of approaching the inner wall of the mounting cavity (201), the lock release cavity (301) is subjected to the force of the mounting cavity (201) in the radial direction and deforms to contract, so that the lock release member (30) locks the screw (11); When the lock release member (30) moves in the direction away from the inner wall of the mounting cavity (201), the lock release cavity (301) loses the force of the mounting cavity (201) in the radial direction and deforms to expand, so that the lock release member (30) releases the screw (11).

12. The screw lock release structure of claim 11, wherein, The lock release member (30) comprises a main body part (31) and at least two lock release parts (303), the at least two lock release parts (303) extend outward from the main body part (31) and are arranged at intervals, the lock release cavity (301) is formed between the at least two lock release parts (303), and a separation groove (33) is formed between adjacent two lock release parts (303), the lock release part (303) abuts against the mounting cavity (201).

13. The screw lock release structure of claim 12, wherein, The outer circumferential surface of the lock release part (303) is provided with a stress surface (322), the mounting cavity (201) is provided with a support surface (2011), when the lock release member (30) moves in the direction of approaching the support surface (2011), the stress surface (322) is subjected to the support force of the support surface (2011) in the radial direction, the lock release part (303) moves towards and controls the lock release cavity (301) to contract and deform inward.

14. The screw lock release structure of claim 12, wherein, The mounting sleeve (20) further comprises a movable cavity (203) in communication with the mounting cavity (201), and the lock releasing member (30) further comprises a moving part (304) extending from the main part (31) in a direction away from the lock releasing part (303), and the moving part (304) penetrates the movable cavity (203).

15. The screw lock release structure of claim 14, wherein, The moving part (304) is provided with a space giving cavity (3041) in communication with the lock releasing cavity (301), and the space giving cavity (3041) is arranged to penetrate the screw rod (11).

16. The screw lock release structure of claim 12, wherein, An outer wall of the lock releasing part (303) is provided with a first positioning surface (323), and the mounting cavity (201) is provided with a second positioning surface (26), and when the lock releasing member (30) is mounted in the mounting cavity (201), the first positioning surface (323) is in contact with the second positioning surface (26) to limit the self-rotation of the lock releasing member (30) in the mounting sleeve (20) around its own axis.

17. The screw lock release structure of claim 14, wherein, An outer wall of the moving part (304) is provided with a third positioning surface (311), and the movable cavity (203) is provided with a fourth positioning surface (27), and when the lock releasing member (30) is mounted in the mounting cavity (201), the third positioning surface (311) is in contact with the fourth positioning surface (27) to limit the self-rotation of the lock releasing member (30) in the mounting sleeve (20) around its own axis.

18. The screw lock release structure of claim 12, wherein, The lock releasing part (303) comprises movable parts (32) and clamping parts (50), the movable parts (32) extend outwardly from the main part (31) and are oppositely arranged, the clamping parts (50) are embedded in the movable parts (32), the lock releasing cavity (301) is formed between the clamping parts (50), the separation groove (33) is formed between the adjacent two movable parts (32), and the movable parts (32) are in close contact with the mounting cavity (201).

19. The screw rod lock releasing structure according to claim 14, further comprising a fixing member, an end of the moving part (304) is provided with a connecting groove (34), the connecting groove (34) is arranged on the outer wall of the moving part (304) in a circumferential direction, and the connecting groove (34) is arranged to connect the fixing member.

20. The screw lock release structure of claim 19, wherein, An end of the moving part (304) is further provided with a mounting notch (35), the mounting notch (35) is arranged in an axial direction of the moving part (304), and the mounting notch (35) is in communication with the connecting groove (34).

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