Support tripod

Abstract

To provide a supporting tripod as auxiliary equipment for photography, which is easier to operate. [Solution] The device includes a supporting tripod, a tripod main body having a rotating chamber at its upper end, a sphere 2 rotatably arranged relative to the rotating chamber, and a sphere swinging clamping mechanism for tightening or loosening the sphere. The sphere swinging clamping mechanism includes a clamping assembly 4 that slidably fits with the tripod main body, a restoring elastic member 5 located between the clamping assembly and the tripod main body, and a position control assembly 7 that is connected to the tripod main body and has a movable pin 71 that fits with the clamping assembly. When the clamping assembly slides due to an external force, the movable pin can be moved to position it at a locked clamping position or an unlocked position. In the locked clamping position, the clamping assembly abuts against the sphere to restrict the axial swing of the sphere, and in the unlocked position, the clamping assembly loosens the sphere to allow it to swing.

Description

[Technical field]

[0001] The present invention relates to the technical field of photography auxiliary equipment, and more particularly to a supporting tripod. [Background technology]

[0002] In the field of photography equipment, a tripod mainly includes a base located at the center, three legs connected to the periphery of the base, an outer assembly is provided above the base, and a monopod is connected to the outer assembly. A sphere is connected to the lower end of the outer assembly, and the sphere is rotatably connected in a mounting chamber inside the base. The base is further provided with a clamping mechanism for clamping the sphere in the base, and a foot pedal is provided on the outside of the base for driving the movement of the clamping mechanism.

[0003] After an operator completes a photographing operation using a tripod and a monopod on the tripod, the operator usually needs to keep the monopod vertical to prevent the monopod and the photographic equipment on the tripod from falling over. In a conventional operation method, the operator first adjusts the monopod to a vertical state, then squats down to operate the clamping mechanism, which clamps the sphere to prevent the monopod from falling over. This conventional operation method requires the operator to squat down to operate the clamping mechanism, which not only takes time and effort, but also makes it easier for the sphere to rotate when the conventional clamping mechanism clamps the sphere, which further causes the monopod to deviate from the vertical direction. In order to keep the monopod vertical, the operator often needs to operate the clamping mechanism many times to repeat the clamping and unlocking operations, which makes the operation relatively laborious. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, the technical problem that the present invention aims to solve is to provide a supporting tripod to overcome the drawback of the prior art that the operation of clamping the sphere on the tripod is relatively laborious. [Means for solving the problem]

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: A support tripod, comprising: a tripod body having a pivot chamber at an upper end; a sphere that is confined within a spherical surface defined by the pivot chamber and is pivotable relative to the pivot chamber; and a sphere swinging and tightening mechanism that is provided within the tripod body and that tightens or loosens the sphere, the sphere swinging and tightening mechanism comprising: a clamping assembly slidably mated with the tripod body; a restoring elastic member elastically provided between the fastening assembly and the tripod body; a position control assembly connected to the tripod body and provided with a movable pin that engages with the fastening assembly (4); When the clamping assembly is slid by an external force, the movable pin can be moved relative to the clamping assembly to be positioned at a locked or unlocked position on the clamping assembly; In the locked clamping position, the clamping assembly abuts the sphere to restrict axial pivoting of the sphere relative to the tripod body, and in the unlocked position, the clamping assembly loosens the sphere to allow axial pivoting of the sphere relative to the tripod body.

[0006] By adopting the above technical solution, when it is necessary to clamp the ball on the supporting tripod and further stabilize the holding state of the ball and the external assembly connected thereto, when the clamping assembly is pressed down and then released, the movable pin moves relative to the clamping assembly to be positioned at the locking clamping position of the clamping assembly, at which the clamping assembly abuts against the ball and the ball cannot swing relative to the axis of the tripod body; the dimension of the restoring elastic member can be designed to be relatively large, so that the clamping force applied by the clamping assembly to the ball under the action of the restoring elastic member is also relatively large, and the clamping effect of the ball is relatively good; when it is necessary to allow the ball to swing relative to the axis of the tripod body, when the clamping assembly is pressed down again and then released, the movable pin moves relative to the clamping assembly to be positioned at the unlocking position of the clamping assembly, and the ball can swing relative to the axis of the tripod body; both the ball clamping operation and the ball unlocking operation of the supporting tripod are very simple and easy to carry out.

[0007] Furthermore, when the tightening assembly slides downward due to an external force, the movable pin can be alternately moved relative to the tightening assembly to a first movable position and a second movable position on the tightening assembly, and the tightening assembly can move the movable pin from the first movable position to the locked tightening position or from the second movable position to the unlocked position due to the force of the restoring elastic member.

[0008] Furthermore, a position control assembly is further provided within the trimmer body, which is axially fixed relative to the trimmer body and circumferentially rotatable relative to the trimmer body, and the movable pin is movably connected to the outer periphery of the position control assembly along the radial direction of the position control assembly.

[0009] Furthermore, a position control elastic member is provided between the position control assembly and the movable pin, and the position control elastic member is used to drive one end of the movable pin to protrude from the outer wall surface of the position control assembly along the radial direction of the position control assembly, and a guide sliding groove is provided on the inner wall surface of the tightening assembly, and the one end of the movable pin protruding outside the position control assembly inserts into the guide sliding groove.

[0010] By adopting the above technical solution, the clamping assembly can move the position control assembly to rotate around its own axial direction by the movable pin, and at the same time, the movable pin can move along the radial direction of the position control assembly; when installed in this way, the movable pin can lock the clamping assembly in a locked clamping position or an unlocked position; and by providing a guide sliding groove on the inner wall of the clamping assembly, the moving direction of the movable pin can be restricted, and the movable pin can slide from the first movable position to the locked clamping position and from the second movable position to the unlocked position; when the clamping assembly of the supporting tripod is pressed down once and then released, the sphere can swing freely; when the clamping assembly is pressed down again and then released, the sphere only becomes vertical and cannot swing freely, which is an easy-to-operate function, and the structure is simple and easy to implement.

[0011] Furthermore, the lock fastening position, the unlocked position, the first movable position and the second movable position are located at different positions of the guide sliding groove, and in the axial direction of the fastening assembly, the distance between the lock fastening position and the sphere is greater than the distance between the first movable position and the sphere, the distance between the unlocked position and the sphere is greater than the distance between the second movable position and the sphere, and the distance between the lock fastening position and the sphere is greater than the distance between the unlocked position and the sphere, when the movable pin is in the locked clamping position and the clamping assembly is not subjected to a depression force, the movable pin and the clamping assembly abut along an axial direction of the clamping assembly to limit movement of the movable pin from the locked clamping position to the first movable position; when the movable pin is in the lock clamping position and the clamping assembly is subjected to a depression force, the movable pin moves from the lock clamping position to the second movable position, the movable pin abutting the clamping assembly to limit a first depression movement stroke of the clamping assembly; When the movable pin is in the second movable position and the pressing force applied to the clamping assembly is removed, the clamping assembly moves upward due to the elastic return force of the restoring elastic member, the movable pin moves from the second movable position to the unlocked position, and the movable pin and the clamping assembly abut against each other along the axial direction of the clamping assembly to limit the movement of the movable pin from the unlocked position to the second movable position, When the movable pin is in the unlocked position and the clamping assembly is subjected to a depression force, the movable pin moves from the unlocked position to the first movable position, and the movable pin abuts the clamping assembly to limit a second depression movement stroke of the clamping assembly.

[0012] By adopting the above technical solution, by setting the locking clamping position, the unlocking position, the first movable position and the second movable position on the guide sliding groove, the clamping assembly can be locked into the locking clamping position and the unlocking position, and the clamping assembly can be automatically moved from the first movable position to the locking clamping position, and from the second movable position to the unlocking position under the action of the restoring elastic member.

[0013] Furthermore, the guide sliding groove includes a first strip groove, a second strip groove, a first spiral groove and a second spiral groove, the length directions of the first strip groove and the second strip groove are all parallel to the axial direction of the tripod body, both ends of the first spiral groove are connected to the first strip groove and the second strip groove, respectively, and both ends of the second spiral groove are connected to the first strip groove and the second strip groove, respectively.

[0014] By adopting the above technical solution, the guide sliding groove consisting of the first strip groove, the second strip groove, the first spiral groove and the second spiral groove has a simple structure and is easy to realize.

[0015] Furthermore, the groove depth of one end of the first spiral groove connected to the first strip groove is greater than the groove depth of the first strip groove, making it easier for the movable pin to slide along the first spiral groove to the second strip groove, and the groove depth of one end of the second spiral groove connected to the second strip groove is greater than the groove depth of the second strip groove, making it easier for the movable pin to slide along the second spiral groove to the first strip groove.

[0016] Furthermore, the first movable position and the locking and tightening position are located at opposite ends of the first strip groove, and the second movable position and the locking and unlocking position are located at opposite ends of the second strip groove.

[0017] By adopting the above technical solution, when the external assembly on the supporting tripod is in a vertical state, the movable pin is located at the connection point between the first spiral groove and the first strip groove, and presses down the clamping assembly. In the process of the clamping assembly moving downward, the groove depth of the one end of the first spiral groove connected to the first strip groove is greater than the groove depth of the first strip groove, so the movable pin can only move along the first spiral groove, and the position control assembly rotates under the action of the oblique groove force. At this time, the movable pin moves to the one end of the first spiral groove connected to the second strip groove, and then the movable pin further moves to the upper end of the second strip groove, at this time the clamping assembly cannot be pressed down any further, and the clamping assembly is released, and the clamping assembly moves to the lower end of the second strip groove under the action of the restoring elastic member and is locked to the movable pin. At this time, the clamping protrusion is released from the ball, and the ball is in an unlocked state and can swing freely in the rotating chamber. The clamping assembly is pushed down again, and in the process of the clamping assembly moving downward, since the groove depth of one end of the second spiral groove connected to the second strip groove is greater than the groove depth of the second strip groove, the movable pin can only move along the second spiral groove, and the position control assembly rotates due to the action of the oblique groove force, at this time the movable pin moves to the upper end of the first strip groove, at this time the clamping assembly cannot be pushed down any further, and the clamping assembly is loosened, and the clamping assembly moves to the lower end of the first strip groove due to the action of the restoring elastic member and is locked to the movable pin, at this time the clamping assembly moves in the direction approaching the sphere until the clamping protrusion enters the insertion hole in the sphere, thereby locking the sphere and maintaining it in a vertical state.

[0018] Furthermore, the first strip groove, the first spiral groove, the second strip groove, and the second spiral groove are sequentially provided along a circumferential direction of an inner wall surface of the fastening assembly, When the number of the guide sliding grooves is one set, the first strip groove and the second spiral groove communicate with each other from end to end, and the guide sliding groove penetrates along the circumferential direction of the inner wall surface of the fastening assembly; When the number of the guide sliding grooves is multiple sets, the multiple sets of guide sliding grooves are evenly arranged along the circumferential direction of the inner wall surface of the fastening assembly, the first strip groove of the guide sliding groove of a previous set and the second spiral groove of the guide sliding groove of a subsequent set are connected, the multiple sets of guide sliding grooves penetrate along the circumferential direction of the inner wall surface of the fastening assembly, and the movable pin can slide alternately in the multiple sets of guide sliding grooves.

[0019] Further, the tightening assembly includes an outer sleeve and an inner sleeve arranged coaxially with the tripod body, the outer sleeve slidably engages with the tripod body, the inner sleeve is fixed inside the outer sleeve, and the guide sliding groove is provided on the inner wall surface of the inner sleeve.

[0020] By adopting the above technical solution, the clamping assembly adopts a method in which the outer sleeve and the inner sleeve are separately manufactured and then assembled, so that the processing of the clamping assembly is more convenient.

[0021] Furthermore, the inner sleeve is formed by joining a plurality of arc-shaped sheets from end to end.

[0022] By adopting the above technical solution, the difficulty of machining the guide sliding groove within the inner sleeve is reduced, since the inner sleeve is made of multiple arc-shaped sheet bodies joined end to end.

[0023] Furthermore, a plurality of positioning pins are provided at an end of the inner sleeve, and a plurality of positioning holes are provided in the outer sleeve to fit with the positioning pins.

[0024] Furthermore, the mating surface between the outer sleeve and the trim body has a contoured cross section.

[0025] By adopting the above technical solution, the mating surfaces of the outer sleeve and the tripod body have a contoured cross section, and the relative circumferential fixing of the clamping assembly and the tripod body can be easily realized.

[0026] Furthermore, a plurality of notched grooves are provided in the outer peripheral wall of the outer sleeve, and the notches of the notched grooves face away from the sphere.

[0027] By adopting the above technical solution, the structural strength of the outer wall of the outer sleeve can be reduced by providing a notch groove in the outer sleeve, making the outer sleeve slightly easier to deform, and facilitating the assembly of the outer sleeve into the trimmer body.

[0028] Further, a receiving chamber is formed between the outer sleeve and the inner sleeve, and the resilient member is at least partially received within the receiving chamber.

[0029] By adopting the above technical solution, the method of the accommodating chamber in which the elastic restoring member is provided between the outer sleeve and the inner sleeve allows the accommodating chamber to regulate the position of the elastic restoring member, and the outer diameter of the accommodating chamber is very close to the outer diameter of the tripod body, so that a elastic restoring member with a large outer diameter and strong elasticity can be provided inside the tripod body, thereby further improving the clamping effect of the clamping assembly on the sphere by the elastic restoring member.

[0030] Furthermore, the movable pins are provided at equal intervals along the circumferential direction of the position restriction assembly, and the number of the movable pins is equal to or less than the number of the guide sliding grooves.

[0031] By adopting the above technical solution, the reliability of the entire ball swing fastening mechanism can be improved by installing multiple movable pins.

[0032] Furthermore, a position control shaft arranged coaxially with the tripod main body is fixed inside the tripod main body, the position control assembly is rotatably connected to the position control shaft around the axis of the position control shaft, and the position control shaft is provided with a position control step that supports the side of the position control assembly that moves away from the tripod main body.

[0033] By adopting the above technical solution, the stability of the position control assembly during rotation can be improved by providing a position control shaft and a position control step thereon, and the position control assembly can be rotated around the axial direction of the position control shaft, making it less likely that vertical deviation will occur.

[0034] Furthermore, the position control assembly includes an inner sleeve rotatably connected to the outer periphery of the position control shaft, and an outer sleeve fitted and fixed to the outer periphery of the inner sleeve, wherein a mounting hole is provided on the outer periphery of the inner sleeve, and a through hole is provided on the outer periphery of the outer sleeve corresponding to the position of the mounting hole, the position control elastic member is provided in the mounting hole, and the movable pin has one end positioned in the mounting hole and the other end capable of protruding outward from the through hole.

[0035] Furthermore, a central shaft hole is provided at the center of the fastening assembly, and the central shaft hole and the position regulating shaft are fitted together so as to be slidable along the axial direction of the position regulating shaft.

[0036] By adopting the above technical solution, the central axial hole of the clamping assembly and the position control shaft slide in the axial direction while the position control shaft plays a guiding role in the sliding of the clamping assembly, which is advantageous in ensuring that the clamping assembly slides accurately along the axial direction of the position control shaft; furthermore, the clamping protrusion of the clamping assembly can accurately adjust the ball to a vertical state, thereby avoiding the problem of misalignment when the ball is clamped due to the movement direction deviation of the clamping assembly.

[0037] Furthermore, an insertion hole having an opening facing the clamping assembly is provided within the sphere, and a clamping protrusion is provided at one end of the clamping assembly facing the sphere, and the clamping protrusion protrudes into the insertion hole to limit the rotation of the sphere relative to the rotation chamber.

[0038] By adopting the above technical solution, when the support rod is connected to the external assembly of the support tripod, in order to ensure that the support rod maintains a stable vertical state for a long time, the clamping assembly only needs to be pressed down and then released, and the clamping assembly moves from the first movable position to the locking position under the action of the restoring elastic member, at this time the clamping protrusion of the clamping assembly enters the insertion groove in the sphere, and the clamping protrusion abuts against the sphere from the inside to the outside, and the sphere cannot swing relative to the axis of the tripod body. This method of the clamping protrusion pushing the sphere from the inside to the outside to realize the clamping of the sphere not only has a very good clamping effect for the sphere, but also has a good clamping effect. Since the fastening protrusion simply slides from bottom to top into the insertion groove of the sphere together with the fastening assembly, the fastening protrusion automatically moves and rotates the sphere before the fastening assembly is fastened, and when the fastening assembly is fastened, the sphere is moved by the fastening protrusion to move the external assembly and support rod thereon to a vertical state, and after the sphere is fastened, the external assembly and support rod on the sphere do not deviate from the vertical direction, so that the sphere can be fastened in the vertical direction or the sphere can be loosened in a single operation, and there is no need to repeat the operation multiple times to fasten the sphere and the external assembly and support rod thereon to a vertical state, making the operation simpler.

[0039] Furthermore, the fastening projection has a truncated cone shape that is smaller at the top and larger at the bottom, and the insertion hole of the sphere has the same tapered shape as the outer shape of the fastening projection.

[0040] Furthermore, a top opening is provided at the upper end of the rotating chamber, and a connection head protruding from the top opening to the outside of the rotating chamber is connected to the sphere, and the connection head is used for connecting to an external assembly.

[0041] By adopting the above technical solution, when the clamping assembly is clamped, the outer wall surface of the clamping protrusion, which has a truncated cone shape, comes into tight contact with the hole wall of the tapered hole in the sphere, thereby increasing the contact area when the two are in a clamped state, further improving the clamping effect, and after the sphere is clamped, the external assembly of the sphere and the support rod will not deviate from the vertical direction.

[0042] Furthermore, the external assembly is used to connect to a support rod that supports a photography equipment, a photography lamp or a photography lampshade.

[0043] Further, a sliding chamber is further provided inside the trimmer body at a lower end thereof, and the clamping assembly is slidably disposed within the sliding chamber along the axial direction of the trimmer body and is fixedly disposed circumferentially relative to the trimmer body.

[0044] Furthermore, the tripod body includes a body sleeve and a spherical sleeve arranged coaxially, the rotating chamber being located within the spherical sleeve and the sliding chamber being located within the body sleeve.

[0045] By adopting the above technical solution, the tripod body adopts a mode of assembling the main sleeve and the spherical sleeve, and the corresponding parts can be produced and assembled separately, which reduces the difficulty of the production and assembly of the product.

[0046] The device further includes a pressing member, one end of which is pivotally attached to one end of the clamping assembly facing the sphere and the other end of which protrudes outside the tripod body, the pressing member being used to drive the clamping assembly to move in a direction away from the sphere.

[0047] Furthermore, the pressing member includes an annular body fixedly connected between the main sleeve and the sphere sleeve, the annular body being located between the sphere and the clamping assembly, a pivot shaft being provided on the side of the annular body facing the sphere, and the pressing member further includes a foot pedal having one end rotatably connected to the pivot shaft and the other end protruding outside the tripod body through the side opening.

[0048] By adopting the above technical solution, a pressing member consisting of an annular body and a foot pedal that can rotate around the annular body is used, which has a simple structure, is easy to assemble and produce, and is easy to press the foot pedal with a foot. When tightening or unlocking the sphere, the operator does not need to squat down, making operation more convenient.

[0049] Additionally, the clamping assembly can pass through a central hole in the annular body, and the foot pedal is provided with a hole for passing the clamping assembly therethrough.

[0050] By adopting the above technical solution, it is easy to apply a large pressing force to the clamping assembly after the foot pedal is pressed down.

[0051] Further, a lower damping ring and an upper damping ring are provided at intervals within the spherical sleeve, the lower damping ring and the upper damping ring surround and form the rotating chamber, the hole diameter of the central hole of the lower damping ring and the hole diameter of the central hole of the upper damping ring are both smaller than the diameter of the sphere, a damping adjustment knob is screwed onto the outer wall of the spherical sleeve, the damping adjustment knob abuts against the upper end surface of the upper damping ring, and the damping adjustment knob is used to adjust the height of the upper damping ring and further to adjust the magnitude of the damping force applied to the sphere by the upper damping ring and the lower damping ring.

[0052] By adopting the above technical solution, the magnitude of the damping force applied to the sphere by the upper damping ring and the lower damping ring can be adjusted by providing a damping adjustment knob.

[0053] Furthermore, at least three support legs are connected to the outer periphery of the main sleeve. Effect of the Invention

[0054] As described above, the support tripod provided by the present invention adopts a ball clamping method in which the pressing member is pressed with the foot, and the operator only needs to press the foot pedal with his / her foot and release the foot pedal, the ball will automatically find the vertical direction and maintain the vertical direction without deviating from the vertical direction, and when the operator needs to use it, he / she can press the foot pedal again and then release the foot pedal, and the ball can swing at any angle. The ball can be clamped vertically or released in one operation, and there is no need to repeat the operation many times to clamp the ball and the external assembly and the support rod thereon in the vertical state, making the operation easier. [Brief description of the drawings]

[0055] In order to more clearly describe the specific embodiments of the present invention or the technical solutions of the prior art, the following will briefly introduce drawings required in the description of the specific embodiments or the prior art. It is obvious that the drawings in the following description are part of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts. [Figure 1] 2 is a schematic diagram of the three-dimensional structure of a supporting tripod according to an embodiment of the present invention; [Diagram 2] 4 is a schematic diagram illustrating an explosion of a supporting tripod in an embodiment of the present invention; [Diagram 3] 1 is a cross-sectional view of a supporting tripod according to an embodiment of the present invention. [Figure 4] 2 is a schematic diagram of the overall structure of a clamping assembly according to an embodiment of the present invention; FIG. [Diagram 5] 4 is a schematic diagram of an explosion of a clamping assembly according to an embodiment of the present invention; [Figure 6] 4 is a schematic diagram of a guide sliding groove on the inner wall surface of the inner sleeve in the embodiment of the present invention. FIG. [Figure 7] 4 is a schematic diagram of the three-dimensional structure of a pressing member according to an embodiment of the present invention; [Figure 8] 4 is a cross-sectional view of a position control assembly according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0056] The technical solutions of the present invention are described below clearly and completely with reference to the drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments made by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0057] In describing the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are orientations or positional relationships indicated based on the drawings, and are merely for the purpose of illustrating and simplifying the present invention, and do not indicate or suggest that such devices or elements have a particular orientation or must be constructed or operated in a particular orientation, and therefore should not be understood as limiting the present invention. Furthermore, the terms "first", "second", and "third" are for illustrative purposes only, and should not be understood as indicating or suggesting relative importance.

[0058] In the description of the present invention, the terms "attached", "coupled" and "connected" should be interpreted broadly unless otherwise specified and limited, and may be, for example, a fixed connection, a detachable connection or an integral connection, a mechanical connection or an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal communication between two elements. Those skilled in the art will understand the specific meaning of the above terms in the present invention according to the specific situation.

[0059] In addition, the technical features of different embodiments of the present invention described below can be combined with each other unless they are mutually contradictory.

[0060] The supporting tripod shown in Fig. 1 to Fig. 8 is mainly used for use in combination with a monopod or a support rod during shooting. The supporting tripod includes a tripod body 1, a sphere 2, a sphere swing clamping mechanism and an external assembly 3, the supporting tripod is used for supporting on the ground, the sphere swing clamping mechanism is attached to the tripod body 1, the external assembly 3 is connected to the upper end of the sphere swing clamping mechanism, the external assembly 3 is used for connecting to a rod such as a monopod or a support rod, the upper end of the monopod or the support rod is used for various shooting-related shooting equipment such as cameras, video cameras, mobile phones, stabilizers, shooting lamps, lampshades, etc. The sphere swing clamping mechanism is used to realize the clamping and unlocking of the external assembly 3, and when the sphere swing clamping mechanism is in a clamping state, the external assembly 3 and the monopod or the support rod thereon maintain a vertical state and do not deviate from the vertical direction. When the ball swing clamping mechanism is in an unlocked state, the outer assembly 3 and the monopod or support bar thereon can swing freely about the axis of the tripod body 1.

[0061] Here, the tripod body 1 is a tubular structure with an openwork interior. A rotating chamber located at the upper end and a sliding chamber 111 located at the lower end are provided inside the tripod body 1, the bottom wall of the sliding chamber 111 is sealed, a side opening 112 is provided on the side wall of the sliding chamber 111, the upper end of the sliding chamber 111 communicates with the lower end of the rotating chamber, and a top opening is provided at the upper end of the rotating chamber.

[0062] In this embodiment, the sphere 2 is restricted within a spherical surface formed by the rotating chamber, the sphere 2 is provided rotatably relative to the rotating chamber, a connection head 21 protruding from a top opening to the outside of the rotating chamber is integrally formed at the upper end of the sphere 2, and the external assembly 3 is fixed to the connection head 21. The sphere swing fastening mechanism includes a fastening assembly 4, a restoring elastic member 5, and a position control assembly 7. The fastening assembly 4 is provided slidably in the sliding chamber 111 along the axial direction of the tripod body 1, and the fastening assembly 4 and the tripod body 1 are fixed relatively in the circumferential direction. The restoring elastic member 5 is provided elastically between the fastening assembly 4 and the tripod body 1, and the restoring elastic member 5 is used to drive the fastening assembly 4 to move in a direction approaching the sphere 2. The position control assembly 7 is connected to the tripod body 1, and the position control assembly 7 is provided with a movable pin 71 that fits with the fastening assembly 4.

[0063] When the fastening assembly 4 slides due to an external force, the movable pin 71 can be moved relative to the fastening assembly 4 to position it at a locked fastening position 421a or an unlocked position 421b on the fastening assembly 4. At the locked fastening position 421a, the fastening assembly 4 abuts against the sphere 2 to restrict the axial swing of the sphere 2 relative to the tripod body 1, and at the unlocked position 421b, the fastening assembly 4 loosens the sphere 2 to allow the axial swing of the sphere 2 relative to the tripod body 1. When the tightening assembly 4 slides downward due to the action of an external force, the movable pin 71 can be moved alternately to a first movable position 421c and a second movable position 421d on the tightening assembly 4 relative to the tightening assembly 4, and the tightening assembly (4) can move the movable pin 71 from the first movable position 421c to the locked tightening position 421a or from the second movable position 421d to the unlocked position 421b due to the action of the restoring elastic member (5).

[0064] The fastening assembly 4 moves alternately to the first movable position 421c and the second movable position 421d by the action of an external force, and the fastening assembly 4 moves from the first movable position 421c to the lock fastening position 421a or from the second movable position 421d to the unlocked position 421b by the action of the restoring elastic member 5. The position restriction assembly 7 is used to fasten the fastening assembly 4 to the lock fastening position 421a and the unlocked position 421b, and the movable pin 71 is further used to limit the fastening assembly 4 to the first movable position 421c and the second movable position 421d. When the movable pin 71 is in the locked tightening position 421a, the tightening assembly 4 abuts against the sphere 2 to limit the axial swing of the sphere 2 relative to the tripod body 1, and the movable pin 71 locks the tightening assembly 4 in the locked tightening position 421a; when the movable pin 71 is in the unlocked position 421b, the tightening assembly 4 loosens the sphere 2 to allow the axial swing of the sphere 2 relative to the tripod body 1, and the movable pin 71 locks the tightening assembly 4 in the unlocked position 421b; when the movable pin 71 is in the first movable position 421c, the movable pin 71 limits the tightening assembly 4 to the first movable position 421c to limit the first pressing stroke of the tightening assembly 4; and when the tightening assembly 4 is in the second movable position 421d, the movable pin 71 limits the tightening assembly 4 to the second movable position 421d to limit the second pressing stroke of the tightening assembly 4.

[0065] The supporting tripod further includes a pressing member 6, one end of which acts on one end of the clamping assembly 4 facing the sphere 2 and the other end of which protrudes outside the tripod body 1 through a side opening 112, the pressing member 6 being used to drive the clamping assembly 4 to move in a direction away from the sphere 2.

[0066] When the monopod or support rod connected to the external assembly 3 needs to be clamped vertically, the pressing member 6 is pressed down and then released, and the clamping assembly 4 moves from the first movable position 421c to the locked clamping position 421a by the action of the restoring elastic member 5. At this time, the clamping assembly 4 abuts upward against the sphere 2, and the movable pin 71 and the clamping assembly 4 abut along the axial direction of the clamping assembly 4. The sphere 2 cannot swing relative to the axis of the tripod body 1, and the sphere 2 is locked in a vertical state. Correspondingly, the external assembly 3 and the monopod or support rod connected to the sphere 2 are also locked in a vertical state. When the ball 2 and the external assembly 3 connected thereto need to be swung along the axis of the tripod body 1, the pressing member 6 is pressed down again and then released, and the clamping assembly 4 moves from the second movable position 421d to the unlocked position 421b under the action of the restoring elastic member 5, the clamping assembly 4 releases the ball 2, and the movable pin 71 and the clamping assembly 4 abut along the axial direction of the clamping assembly 4, so that the ball 2 can freely swing on the axis of the tripod body 1 in the rotating chamber, and the external assembly 3 of the ball 2 and the monopod or support rod can also freely swing. With just one operation, the ball 2 of the supporting tripod can be clamped and unlocked, and the operation is very simple and easy to carry out, which can greatly improve the product competitiveness of the supporting tripod.

[0067] In some embodiments, the sphere 2 is provided with an insertion hole 22 with an opening facing the clamping assembly 4, and a clamping protrusion 411 that protrudes outward toward the sphere 2 at one end of the clamping assembly 4 facing the sphere 2 is provided, and the clamping protrusion 411 can enter the insertion hole 22 to restrict the rotation of the sphere 2 relative to the rotating chamber. When the clamping assembly 4 is in a clamped state, the clamping protrusion 411 of the clamping assembly 4 enters the insertion groove in the sphere 2, and the clamping protrusion 411 abuts against the sphere 2 from the inside to the outside, and the sphere 2 cannot rotate relative to the rotating chamber. The method of clamping the sphere 2 by pushing the clamping protrusions 411 from the inside to the outside in this way not only has a very good clamping effect on the sphere 2, but also, since the clamping protrusions 411 simply slide from bottom to top into the insertion groove of the sphere 2 together with the clamping assembly 4, the clamping protrusions 411 automatically move and rotate the sphere 2 before the clamping assembly 4 moves to the clamping position, and when the clamping assembly 4 moves to the clamping position, the sphere 2 is moved by the clamping protrusions 411 to make the external assembly 3 thereon vertical. After the sphere 2 is clamped, the external assembly 3 on the sphere 2 does not deviate from the vertical direction, and the sphere 2 can be clamped vertically or loosened with a single operation, and there is no need to repeat the operation many times to clamp the sphere 2 and the external assembly 3 thereon and the monopod or support rod in the vertical state, making the operation easier. In an alternative embodiment, the insertion hole 22 is not provided in the sphere 2, and the clamping assembly 4 is not provided with the clamping protrusion 411, and the clamping assembly 4 can directly or indirectly abut against the lower end of the sphere 2 to achieve clamping or unlocking of the sphere 2. In another alternative embodiment, a damping pad is provided in the tripod body 1, located on the sphere 2 and the clamping assembly 4, and the damping pad defines a part of the outer spherical surface of the rotating chamber, and the clamping assembly 4 drives the damping pad to move upward, thereby further clamping the sphere 2 with the damping pad.

[0068] In some embodiments, the clamping protrusion 411 has a truncated cone shape that is smaller at the top and larger at the bottom, and the insertion hole 22 of the sphere 2 has the same tapered shape as the outer shape of the clamping protrusion 411. When the clamping assembly 4 is clamped, the outer wall surface of the truncated cone-shaped clamping protrusion 411 and the hole wall of the tapered hole in the sphere 2 come into close contact with each other, increasing the contact area when the two are in a clamped state, further improving the clamping effect, and the external assembly 3 and the support rod on the sphere 2 will not deviate from the vertical direction after the sphere 2 is clamped.

[0069] In some embodiments, the position restriction assembly 7 is provided in the tripod body 1, a cavity is provided inside the clamping assembly 4, and when the clamping assembly 4 slides vertically, the position restriction assembly 7 can enter into the cavity inside the clamping assembly 4. The position restriction assembly 7 and the tripod body 1 are relatively fixed in the axial direction and rotatable in the circumferential direction, and the movable pin 71 is movably connected to the position restriction assembly 7 along the radial direction of the position restriction assembly 7, and the movable pin 71 is used to clamp the clamping assembly 4 to the locked clamping position 421a or the unlocked position 421b. When the tightening assembly 4 slides downward due to the action of the pressing member 6, the tightening assembly 4 can move the position control assembly 7 by the movable pin 71 to rotate around its own axial direction, and when the tightening assembly 4 bounces upward due to the elastic action of the restoring elastic member 5, the movable pin 71 automatically becomes immobile, but the position of the movable pin 71 on the tightening assembly 4 moves linearly from the first movable position 421c to the locked tightening position 421a, or moves linearly from the second movable position 421d to the unlocked position 421b. In alternative embodiments, the position control assembly 7 may be provided outside the clamping assembly 4 or the tripod body 1, and the position control assembly 7 may lock the clamping assembly 4 in the locked clamping position 421a and the unlocked position 421b, and the position control assembly 7 may be located in one specific position, or there may be multiple position control assemblies 7, each of which clamps or positions the clamping assembly 4 in a different position.

[0070] In some embodiments, a position restriction elastic member 74 is provided between the position restriction assembly 7 and the movable pin 71. The position restriction elastic member 74 is used to drive one end of the movable pin 71 to protrude along the radial direction of the position restriction assembly 7 to the outer wall surface of the position restriction assembly 7, and a guide slide groove 421 is provided on the inner wall surface of the clamping assembly 4, and one end of the movable pin 71 protruding from the outer wall surface of the position restriction assembly 7 enters into the guide slide groove 421. By providing the guide slide groove 421 on the inner wall of the clamping assembly 4, the moving direction of the movable pin 71 can be restricted, and the movable pin 71 can lock the clamping assembly 4 at the lock clamping position 421a or the unlocked position 421b, and the movable pin 71 slides from the first movable position 421c to the lock clamping position 421a and from the second movable position 421d to the unlocked position 421b, realizing the clamping and unlocking of the supporting tripod by one operation, and the operation is very simple. In the clamped state, the sphere 2 and the external assembly 3 thereon are automatically in a vertical state, and in the unlocked state, the sphere 2 and the external assembly 3 thereon can swing arbitrarily.

[0071] In some embodiments, the lock tightening position 421a, the unlocking position 421b, the first movable position 421c and the second movable position 421d are located at different positions of the guide slide groove 421, and in the axial direction of the fastening assembly 4, the distance between the lock tightening position 421a and the sphere 2 is greater than the distance between the first movable position 421c and the sphere 2, the distance between the unlocking position 421b and the sphere 2 is greater than the distance between the second movable position 421d and the sphere 2, and the distance between the lock tightening position 421a and the sphere 2 is greater than the distance between the unlocking position 421b and the sphere 2. When the movable pin 71 is in the lock tightening position 421a and the fastening assembly 4 is not subjected to a pressing force, the movable pin 71 and the fastening assembly 4 abut along the axial direction of the fastening assembly 4 to restrict the movement of the fastening assembly 4 from the lock tightening position 421a to the first movable position 421c. When the movable pin 71 is in the lock fastening position 421a and the fastening assembly 4 receives the pressing force of the pressing member 6, the movable pin 71 moves from the lock fastening position 421a to the second movable position 421d, and the movable pin 71 abuts against the fastening assembly 4 to limit the first pressing stroke of the fastening assembly 4. When the movable pin 71 is in the second movable position 421d and the pressing force received by the fastening assembly 4 from the pressing member 6 is no longer received, the fastening assembly 4 moves upward due to the elastic restoring force of the restoring elastic member 5, the movable pin 71 moves from the second movable position 421d to the unlocked position 421b, and the movable pin 71 and the fastening assembly 4 abut along the axial direction of the fastening assembly 4 to limit the movement of the fastening assembly 4 from the unlocked position 421b to the second movable position 421d. When the movable pin 71 is in the unlocked position 421b and the tightening assembly 4 receives a pressing force from the pressing member 6, the movable pin 71 moves from the unlocked position 421b to the first movable position 421c, and the movable pin 71 abuts against the tightening assembly 4 to limit the second pressing movement stroke of the tightening assembly 4.By setting the lock tightening position 421a, the unlocked position 421b, the first movable position 421c and the second movable position 421d on the guide sliding groove 421, the tightening assembly 4 can be locked at the lock tightening position 421a and the unlocked position 421b, and the tightening assembly 4 can be automatically moved from the first movable position 421c to the lock tightening position 421a, and from the second movable position 421d to the unlocked position 421b by the action of the restoring elastic member 5.

[0072] In some embodiments, the guide sliding groove 421 includes a first strip groove 4211, a second strip groove 4212, a first spiral groove 4213, and a second spiral groove 4214, the length directions of the first strip groove 4211 and the second strip groove 4212 are all parallel to the axial direction of the tripod body 1, both ends of the first spiral groove 4213 communicate with the first strip groove 4211 and the second strip groove 4212, respectively, and both ends of the second spiral groove 4214 communicate with the first strip groove 4211 and the second strip groove 4212, respectively. The length of the first strip groove 4211 is greater than the length of the second strip groove 4212, and the length of the first spiral groove 4213 is greater than the length of the second spiral groove 4214. The first movable position 421c and the lock fastening position 421a are located at opposite ends of the first strip groove 4211, the second movable position 421d and the lock release position 421b are located at opposite ends of the second strip groove 4212, the lock fastening position 421a is located at one end of the first spiral groove 4213 that communicates with the first strip groove 4211, and the lock release position 421b is located at one end of the second spiral groove 4214 that communicates with the second strip groove 4212. The guide sliding groove 421 consisting of the first strip groove 4211, the second strip groove 4212, the first spiral groove 4213 and the second spiral groove 4214 has a simple structure and is easy to realize.

[0073] In some embodiments, the groove depth of one end of the first spiral groove 4213 that connects to the first strip groove 4211 is greater than the groove depth of the first strip groove 4211, making it easier for the movable pin 71 to slide along the first spiral groove 4213 to the second strip groove 4212, and the groove depth of one end of the second spiral groove 4214 that connects to the second strip groove 4212 is greater than the groove depth of the second strip groove 4212, making it easier for the movable pin 71 to slide along the second spiral groove 4214 to the first strip groove 4211. When the external assembly 3 on the supporting tripod is in a vertical state, the movable pin 71 is located at the connection point between the first spiral groove 4213 and the first strip groove 4211, and presses down the pressing member 6. The pressing member 6 applies a pressing force to the clamping assembly 4, and the clamping assembly 4 moves downward. In the process of moving downward, the groove depth of the first spiral groove 4213 at one end connected to the first strip groove 4211 is greater than the groove depth of the first strip groove 4211, so the movable pin 71 can only move along the first spiral groove 4213, and the position control assembly 7 is moved by the action of the oblique groove force. rotates, and at this time the movable pin 71 moves to one end of the first spiral groove 4213 that communicates with the second strip groove 4212, and then the movable pin 71 moves further to the upper end of the second strip groove 4212, at which point the clamping assembly 4 cannot be pressed down any further, and when the pressing member 6 is released, the clamping assembly 4 moves to the lower end of the second strip groove 4212 due to the action of the restoring elastic member 5 and is locked to the movable pin 71, and at this time the clamping protrusion 411 detaches from the sphere 2, the sphere 2 is in an unlocked state, and the sphere 2 can rotate freely within the rotating chamber.The pressing member 6 is pressed down again, and the pressing member 6 applies a pressing force to the clamping assembly 4, and the clamping assembly 4 moves downward. In the process of moving downward, the groove depth of the one end of the second spiral groove 4214 connected to the second strip groove 4212 is greater than the groove depth of the second strip groove 4212, so that the movable pin 71 can only move along the second spiral groove 4214. Under the action of the oblique groove force, the position control assembly 7 rotates, and at this time, the movable pin 71 moves along the first strip groove 4212. It moves to the upper end of the trip groove 4211, at which point the clamping assembly 4 cannot be pressed down any further, so the pressing member 6 is released and the clamping assembly 4 moves to the lower end of the first strip groove 4211 by the action of the restoring elastic member 5 and is locked to the movable pin 71. At this point, the clamping assembly 4 moves in a direction approaching the sphere 2 until the clamping protrusion 411 enters the insertion hole 22 in the sphere 2, thereby locking the sphere 2 and holding it in a vertical position.

[0074] In some embodiments, the first strip groove 4211, the first spiral groove 4213, the second strip groove 4212, and the second spiral groove 4214 are sequentially provided along the circumferential direction of the inner wall surface of the fastening assembly 4. The number of the guide sliding grooves 421 is one set, the first strip groove 4211 and the second spiral groove 4214 are connected from end to end, and the guide sliding groove 421 penetrates the inner wall surface of the fastening assembly 4 along the circumferential direction. In another embodiment, the number of guide sliding grooves 421 is multiple sets, the multiple sets of guide sliding grooves 421 are evenly arranged along the circumferential direction of the inner wall surface of the fastening assembly 4, the first strip groove 4211 of the previous set of guide sliding grooves 421 and the second spiral groove 4214 of the rear set of guide sliding grooves 421 are connected, the multiple sets of guide sliding grooves 421 penetrate along the circumferential direction of the inner wall surface of the fastening assembly 4, and the movable pin 71 can slide alternately in the multiple sets of guide sliding grooves 421.

[0075] In some embodiments, three movable pins 71 are provided evenly along the circumferential direction of the position restriction assembly 7, and the number of movable pins 71 is equal to the number of guide slide grooves 421. Providing a plurality of movable pins 71 can improve the reliability of the entire tightening mechanism. It can be conceived here that the number of movable pins 71 may be less than the number of guide slide grooves 421, for example, the number of movable pins 71 may be two.

[0076] In some embodiments, the clamping assembly 4 includes an outer sleeve 41 and an inner sleeve 42 arranged coaxially with the tripod body 1, the outer sleeve 41 slidably fits into the sliding chamber 111, the inner sleeve 42 is fixed inside the outer sleeve 41 by a plurality of sets of clamping screws, and the guide sliding groove 421 is recessed on the inner wall surface of the inner sleeve 42. A plurality of positioning pins 45 are provided at the end of the inner sleeve 42, and the outer sleeve 41 is provided with positioning holes that fit with the plurality of positioning pins 45. The clamping assembly 4 adopts a method in which the outer sleeve 41 and the inner sleeve 42 are separately manufactured and then assembled, which makes the processing of the clamping assembly 4 more convenient.

[0077] In some embodiments, the inner sleeve 42 is formed by joining three arc-shaped sheets end to end, and by installing it in this manner, the difficulty of machining the guide sliding groove 421 in the inner sleeve 42 can be reduced.

[0078] In some embodiments, the mating surfaces of the outer sleeve 41 and the tripod body 1 have a contoured cross-section, thus making it easy to achieve relative circumferential fixation of the clamping assembly 4 and the tripod body 1 and simplifying assembly.

[0079] In some embodiments, three notch grooves 412 are provided on the outer peripheral wall of the outer sleeve 41, and the notches of the three notch grooves 412 face away from the sphere 2. By providing the notch grooves 412 on the outer peripheral wall of the outer sleeve 41, the structural strength of the outer sleeve 41 can be reduced, and the outer peripheral wall of the outer sleeve 41 can be made slightly more easily deformed, which makes it easier to assemble the outer sleeve 41 into the sliding chamber 111 of the tripod body 1.

[0080] In some embodiments, a receiving chamber 43 is formed between the outer sleeve 41 and the inner sleeve 42, and the elastic member 5 is at least partially received in the receiving chamber 43. When installed in this manner, the clamping assembly 4 can regulate the position of the elastic member 5 via the receiving chamber 43, and the outer diameter of the receiving chamber 43 is very close to the outer diameter of the tripod body 1, so that the elastic member 5 having a large outer diameter and strong elasticity can be provided in the tripod body 1, and the clamping effect of the clamping assembly 4 on the sphere 2 by the elastic member 5 can be further improved.

[0081] In some embodiments, a position restriction shaft 8 is fixed inside the tripod body 1 in the same axial direction as the tripod body 1, the position restriction assembly 7 is rotatably connected to the position restriction shaft 8 about the axis of the position restriction shaft 8, and the position restriction shaft 8 is provided with a position restriction step 81 for receiving the side of the position restriction assembly 7 moving away from the tripod body 1. The provision of the position restriction shaft 8 and the position restriction step 81 thereon can improve the stability of the position restriction assembly 7 during rotation, and the position restriction assembly 7 is rotated about the axial direction of the position restriction shaft 8 to prevent vertical displacement. The position restriction assembly 7 includes an inner sleeve 72 rotatably connected to the outer periphery of the position restriction shaft 8, and an outer sleeve 73 fitted and fixed to the outer periphery of the inner sleeve 72. The inner sleeve 72 has an attachment hole on its outer periphery, the outer sleeve 73 has a through hole on its outer periphery that corresponds to the position of the attachment hole, the position restricting elastic member 74 is provided in the attachment hole, one end of the movable pin 71 is located in the attachment hole and the other end can protrude from the through hole to the outside. The outer sleeve 73 has a cavity 731 that fits with the position restricting step 81 of the position restricting shaft 8.

[0082] In some embodiments, a central axial hole is provided in the center of the outer sleeve 41, and the central axial hole is fitted with the position limiting shaft 8 so as to be slidable along the axial direction of the position limiting shaft 8. By installing in this manner, the position limiting shaft 8 acts as a guide for the sliding of the clamping assembly 4, which is advantageous to ensure that the clamping assembly 4 slides accurately along the axial direction of the position limiting shaft 8, and further, the clamping protrusion 411 of the clamping assembly 4 can accurately adjust the sphere 2 to a vertical state, thereby avoiding the problem of misalignment when the sphere 2 is clamped due to the misalignment of the moving direction of the clamping assembly 4.

[0083] In some embodiments, the tripod body 1 includes a body sleeve 11 and a spherical sleeve 12 arranged coaxially, the rotating chamber is located in the spherical sleeve 12, and the sliding chamber 111 is located in the body sleeve 11. The tripod body 1 adopts a manner of assembling the body sleeve 11 and the spherical sleeve 12, and the corresponding parts can be produced and assembled separately, which can reduce the difficulty of production and assembly of the product.

[0084] In some embodiments, the pressing member 6 includes an annular body 61 fixedly connected between the body sleeve 11 and the sphere sleeve 12, the annular body 61 being located between the sphere 2 and the clamping assembly 4, a pivot shaft 62 being provided on the side of the annular body 61 facing the sphere 2, and the pressing member 6 further includes a foot pedal 63, one end of which is pivotally connected to the pivot shaft 62 and the other end of which protrudes outside the tripod body 1 through the side opening 112. By using the pressing member 6 consisting of the annular body 61 and the foot pedal 63 pivotable around it, the structure is simple, the assembly production is easy, and the foot pedal 63 is easy to step on with a foot, so that the operator does not need to squat down when clamping or unlocking the sphere 2, and the operation is more convenient. The clamping boss passes through the central hole of the annular body 61, and the foot pedal 63 is provided with a hole through which the clamping boss passes. With this arrangement, it is easy to apply a large pressing force to the clamping assembly 4 after the foot pedal 63 is pressed down.

[0085] In some embodiments, a lower damping ring 91 and an upper damping ring 92 are provided spaced apart within the spherical sleeve 12, the lower damping ring 91 and the upper damping ring 92 surround a rotating chamber, the hole diameter of the central hole of the lower damping ring 91 and the hole diameter of the central hole of the upper damping ring 92 are both smaller than the diameter of the sphere 2, a damping adjustment knob 10 is screwed onto the outer wall of the spherical sleeve 12, the damping adjustment knob 10 abuts against the upper end surface of the upper damping ring 92, and the damping adjustment knob 10 is used to adjust the height of the upper damping ring 92 and further adjust the magnitude of the damping force applied to the sphere 2 by the upper damping ring 92 and the lower damping ring 91.

[0086] As described above, the supporting tripod provided in the present invention adopts a foot-operated tightening method for the sphere 2, and the operator only needs to step on the foot pedal 63 with his / her foot and then release the foot pedal 63, and the sphere 2 will automatically find the vertical direction and maintain the vertical direction without deviating from the vertical direction, and when the operator needs to use it, he / she can step on the foot pedal 63 again and then release the foot pedal 63, and the sphere 2 can swing at any angle. The sphere 2 can be tightened vertically or loosened in one operation, and there is no need to repeat the operation many times to tighten the sphere 2 and the external assembly 3 and the support rod thereon in the vertical state, which makes the operation easier.

[0087] Of course, the above examples are merely illustrative for clarifying the description, and are not intended to limit the embodiments. Those skilled in the art can make other different modifications or changes based on the above description. It is not necessary to cover all the embodiments here. And the obvious modifications or changes derived thereby still fall within the scope of protection of the present invention. [Explanation of symbols]

[0088] 1 tripod body, 11 body sleeve, 111 sliding chamber, 112 side opening, 12 spherical sleeve, 13 support leg, 2 sphere, 21 connection head, 22 insertion hole, 3 External Assembly, 4 Fastening assembly, 41 outer sleeve, 411 fastening projection, 412 notch groove, 42 inner sleeve, 421 guide slide groove, 4211 first strip groove, 4212 second strip groove, 4213 first spiral groove, 4214 second spiral groove, 421a lock fastening position, 421b unlocking position, 421c first movable position, 421d second movable position, 43 receiving chamber, 44 fastening screw, 45 positioning pin, 5. Resilient member; 6 pressing member, 61 annular body, 62 rotating shaft, 63 foot pedal, 631 hole, 7 Position control assembly, 71 movable pin, 72 inner sleeve, 73 outer sleeve, 731 cavity, 74 position control elastic member, 75 plane bearing, 76 fastening member, 8 position control axis, 81 position control step, 91 lower damping ring, 92 upper damping ring, 10 Damping adjustment knob.

Claims

1. A supporting tripod, comprising: a tripod body (1) having a rotating chamber at its upper end; a sphere (2) that is confined within a spherical surface formed by the rotating chamber and is rotatable relative to the rotating chamber; and a sphere swinging and tightening mechanism that is provided within the tripod body (1) and that tightens or loosens the sphere (2), the sphere swinging and tightening mechanism comprising: a clamping assembly (4) that slidably fits with the tripod body (1); a restoring elastic member (5) elastically provided between the fastening assembly (4) and the tripod main body (1); a position control assembly (7) connected to the tripod body (1) and provided with a movable pin (71) that engages with the fastening assembly (4); When the clamping assembly (4) slides due to an external force, the movable pin (71) can be moved relative to the clamping assembly (4) to be positioned at a locked clamping position (421a) or an unlocked position (421b) on the clamping assembly (4); a support tripod, characterized in that in the locked tightening position (421a), the tightening assembly (4) abuts against the sphere (2) to restrict axial swing of the sphere (2) relative to the tripod body (1), and in the unlocked position (421b), the tightening assembly (4) loosens the sphere (2) to allow axial swing of the sphere (2) relative to the tripod body (1).

2. 2. The supporting tripod according to claim 1, characterized in that, when the clamping assembly (4) slides downward due to an external force, the movable pin (71) can be alternately moved relative to the clamping assembly (4) to a first movable position (421c) and a second movable position (421d) on the clamping assembly (4), and the clamping assembly (4) can move the movable pin (71) from the first movable position (421c) to the lock clamping position (421a) or from the second movable position (421d) to the unlocked position (421b) due to the force of the restoring elastic member (5).

3. 3. The supporting tripod according to claim 2, characterized in that the position control assembly (7) and the tripod main body (1) are fixed relative to each other in the axial direction and rotatable relative to each other in the circumferential direction, and the movable pin (71) is movably connected to the outer periphery of the position control assembly (7) along the radial direction of the position control assembly (7).

4. The supporting tripod according to claim 3, characterized in that a position control elastic member (74) is provided between the position control assembly (7) and the movable pin (71), the position control elastic member (74) is used to drive one end of the movable pin (71) so as to protrude from an outer wall surface of the position control assembly (7) along a radial direction of the position control assembly (7), a guide sliding groove (421) is provided on an inner wall surface of the tightening assembly (4), and the one end of the movable pin (71) protruding outside the position control assembly (7) enters into the guide sliding groove (421).

5. The lock fastening position (421a), the unlocked position (421b), the first movable position (421c) and the second movable position (421d) are located at different positions of the guide sliding groove (421), and in the axial direction of the fastening assembly (4), the distance between the lock fastening position (421a) and the sphere (2) is greater than the distance between the first movable position (421c) and the sphere (2), the distance between the unlocked position (421b) and the sphere (2) is greater than the distance between the second movable position (421d) and the sphere (2), and the distance between the lock fastening position (421a) and the sphere (2) is greater than the distance between the unlocked position (421b) and the sphere (2), When the movable pin (71) is in the lock tightening position (421a) and the tightening assembly (4) is not receiving a pressing force, the movable pin (71) and the tightening assembly (4) abut along the axial direction of the tightening assembly (4) to limit the movement of the movable pin (71) from the lock tightening position (421a) to the first movable position (421c); When the movable pin (71) is in the lock tightening position (421a) and the clamping assembly (4) is subjected to a pressing force, the movable pin (71) moves from the lock tightening position (421a) to the second movable position (421d), and the movable pin (71) abuts against the clamping assembly (4) to limit a first pressing movement stroke of the clamping assembly (4); When the movable pin (71) is in the second movable position (421d) and the pressing force applied to the tightening assembly (4) is removed, the tightening assembly (4) moves upward due to the elastic restoring force of the restoring elastic member (5), and the movable pin (71) moves from the second movable position (421d) to the unlocked position (421b), and the movable pin (71) and the tightening assembly (4) abut along the axial direction of the tightening assembly (4), restricting the movement of the movable pin (71) from the unlocked position (421b) to the second movable position (421d); 5. The support tripod according to claim 4, characterized in that, when the movable pin (71) is in the unlocked position (421b) and the clamping assembly (4) is subjected to a pressing force, the movable pin (71) moves from the unlocked position (421b) to the first movable position (421c), and the movable pin (71) abuts against the clamping assembly (4) to limit a second pressing movement stroke of the clamping assembly (4).

6. The supporting tripod of claim 5, characterized in that the guide sliding groove (421) includes a first strip groove (4211), a second strip groove (4212), a first spiral groove (4213) and a second spiral groove (4214), the longitudinal directions of the first strip groove (4211) and the second strip groove (4212) are all parallel to the axial direction of the tripod body (1), both ends of the first spiral groove (4213) are connected to the first strip groove (4211) and the second strip groove (4212) respectively, and both ends of the second spiral groove (4214) are connected to the first strip groove (4211) and the second strip groove (4212) respectively.

7. The supporting tripod of claim 6, characterized in that a groove depth of one end of the first spiral groove (4213) connected to the first strip groove (4211) is greater than a groove depth of the first strip groove (4211), making it easier for the movable pin (71) to slide along the first spiral groove (4213) to the second strip groove (4212), and a groove depth of one end of the second spiral groove (4214) connected to the second strip groove (4212) is greater than a groove depth of the second strip groove (4212), making it easier for the movable pin (71) to slide along the second spiral groove (4214) to the first strip groove (4211).

8. 8. The support tripod of claim 7, wherein the first movable position (421c) and the lock tightening position (421a) are located at opposite ends of the first strip groove (4211), and the second movable position (421d) and the unlocked position (421b) are located at opposite ends of the second strip groove (4212).

9. the first strip groove (4211), the first spiral groove (4213), the second strip groove (4212), and the second spiral groove (4214) are provided sequentially along the circumferential direction of the inner wall surface of the fastening assembly (4); When the number of the guide sliding grooves (421) is one set, the first strip groove (4211) and the second spiral groove (4214) communicate with each other from end to end, and the guide sliding groove (421) penetrates the inner wall surface of the fastening assembly (4) along the circumferential direction; The supporting tripod according to claim 6, characterized in that, when there are multiple sets of the guide sliding grooves (421), the multiple sets of the guide sliding grooves (421) are evenly arranged along the circumferential direction of the inner wall surface of the fastening assembly (4), the first strip groove (4211) of the guide sliding groove (421) of a previous set and the second spiral groove (4214) of the guide sliding groove (421) of a subsequent set are connected, the multiple sets of the guide sliding grooves (421) penetrate along the circumferential direction of the inner wall surface of the fastening assembly (4), and the movable pin (71) can slide alternately in the multiple sets of the guide sliding grooves (421).

10. The supporting tripod according to any one of claims 4 to 9, characterized in that the clamping assembly (4) includes an outer sleeve (41) and an inner sleeve (42) arranged coaxially with the tripod main body (1), the outer sleeve (41) slidably fits with the tripod main body (1), the inner sleeve (42) is fixed inside the outer sleeve (41), and the guide sliding groove (421) is provided on the inner wall surface of the inner sleeve (42).

11. 11. The support tripod according to claim 10, wherein the inner sleeve (42) is formed by joining a plurality of arc-shaped sheets together end to end.

12. 11. The supporting tripod according to claim 10, characterized in that the outer sleeve (41) has a plurality of cutout grooves (412) in its outer peripheral wall, the cutouts of the cutout grooves (412) facing away from the sphere (2).

13. 11. Support tripod according to claim 10, characterized in that a receiving chamber (43) is formed between the outer sleeve (41) and the inner sleeve (42), and the resilient member (5) is at least partially received in the receiving chamber (43).

14. The supporting tripod according to claim 3, characterized in that a position control shaft (8) arranged coaxially with the tripod main body (1) is fixed inside the tripod main body (1), the position control assembly (7) is connected to the position control shaft (8) so as to be rotatable around the axis of the position control shaft (8), and the position control shaft (8) is provided with a position control step (81) for receiving the side of the position control assembly (7) that moves away from the tripod main body (1).

15. The supporting tripod according to claim 14, characterized in that a central shaft hole is provided at the center of the tightening assembly (4), and the central shaft hole and the position control shaft (8) are slidably fitted together along the axial direction of the position control shaft (8).

16. The supporting tripod according to claim 1, characterized in that an insertion hole (22) having an opening facing the clamping assembly (4) is provided in the sphere (2), and a clamping protrusion (411) is provided at one end of the clamping assembly (4) facing the sphere (2), and the clamping protrusion (411) protrudes into the insertion hole (22) to limit axial swing of the sphere (2) relative to the tripod body (1).

17. The supporting tripod according to claim 16, characterized in that the fastening protrusion (411) has a truncated cone shape that is smaller at the top and larger at the bottom, and the insertion hole (22) of the sphere (2) has the same tapered shape as the outer shape of the fastening protrusion (411).

18. 2. The supporting tripod according to claim 1, characterized in that the rotating chamber has a top opening at the upper end thereof, the sphere (2) is connected to a connection head (21) protruding from the top opening to the outside of the rotating chamber, and the connection head (21) is used for connecting to an external assembly (3).

19. 19. Support tripod according to claim 18, characterized in that the external assembly (3) is used for connecting to a support rod or monopod for supporting photographic equipment.

20. 2. The supporting tripod according to claim 1, further comprising a sliding chamber (111) located at a lower end inside the tripod main body (1), the clamping assembly (4) being slidably mounted within the sliding chamber (111) along the axial direction of the tripod main body (1) and fixedly mounted in a circumferential direction relative to the tripod main body (1).

21. 21. The supporting tripod according to claim 20, characterized in that the tripod body (1) comprises a body sleeve (11) and a spherical sleeve (12) arranged coaxially, the pivoting chamber being located in the spherical sleeve (12) and the sliding chamber (111) being located in the body sleeve (11).

22. 22. The supporting tripod according to claim 21, further comprising a pressing member (6), one end of which is pivotally attached to an end of the clamping assembly (4) facing the sphere (2) and the other end of which protrudes outside the tripod body (1), the pressing member (6) being used to drive the clamping assembly (4) to move in a direction away from the sphere (2).

23. 23. The supporting tripod according to claim 22, characterized in that the pressing member (6) comprises an annular body (61) fixedly connected between the body sleeve (11) and the sphere sleeve (12), the annular body (61) being located between the sphere (2) and the clamping assembly (4), a pivot shaft (62) being provided on a side of the annular body (61) facing the sphere (2), and the pressing member (6) further comprises a foot pedal (63) having one end pivotally connected to the pivot shaft (62) and the other end protruding outside the tripod body (1).

24. 24. Support tripod according to claim 23, characterized in that said foot pedal (63) is provided with a hole for passing said clamping assembly (4).

25. 22. The supporting tripod according to claim 21, further comprising a lower damping ring (91) and an upper damping ring (92) spaced apart from each other within the spherical sleeve (12), the lower damping ring (91) and the upper damping ring (92) surrounding and forming the rotating chamber, the diameter of a central hole of the lower damping ring (91) and the diameter of a central hole of the upper damping ring (92) are both smaller than a diameter of the sphere (2), a damping adjustment knob (10) is screwed onto an outer wall of the spherical sleeve (12), the damping adjustment knob (10) abuts against an upper end surface of the upper damping ring (92), and the damping adjustment knob (10) is used to adjust the magnitude of the damping force applied to the sphere (2) by the upper damping ring (92) and the lower damping ring (91).

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