Supporting foot stool

Abstract

The invention discloses a supporting foot stand which comprises a foot stand body with a rotating cavity formed in the upper end, a ball rotationally arranged in the rotating cavity and a ball swing locking mechanism used for locking or loosening the ball. The ball swing locking mechanism comprises a locking assembly in sliding fit with the foot stool body, a reset elastic piece located between the locking assembly and the foot stool body, and a limiting assembly connected to the foot stool body and provided with a movable pin matched with the locking assembly. When the locking assembly slides under external force, the movable pin can move and be positioned to a locking position or an unlocking position; in the locking position, the locking assembly abuts against the ball body to limit axis swinging of the ball body; and in the unlocking locking position, the locking assembly loosens the ball body to allow the ball body to swing. According to the design, the locking assembly is pressed downwards and then loosened, and the ball body can swing at will; after the locking assembly is pressed downwards again, the locking assembly is loosened, and the ball keeps vertical and cannot swing at will; the ball body can be locked in the vertical direction or loosened only through one-time operation, and operation is simpler.

Description

Technical Field

[0001] The present invention relates to the technical field of photography auxiliary equipment, and in particular to a supporting tripod. Background Art

[0002] In the field of photographic equipment, a tripod primarily consists of a central base and three legs connected to its periphery. An external assembly is located above the base, to which the monopod is attached. A sphere is attached to the lower end of the external assembly, which pivots within a mounting cavity within the base. The base also features a locking mechanism for securing the sphere within the base, and a foot pedal is located on the outside of the base to actuate the locking mechanism.

[0003] After the operator completes the photography operation using a tripod and the monopod on it, the monopod usually needs to be kept in an upright position to prevent the monopod and the photographic equipment on it from falling. The traditional operation method is to first adjust the monopod to a vertical position and then squat down to operate the locking mechanism. The locking mechanism locks the ball to ensure that the monopod does not fall. This traditional operation method requires the operator to squat down to operate the locking mechanism, which is not only time-consuming and labor-intensive, but also the traditional locking mechanism can easily cause the ball to rotate when locking the ball, thereby causing the monopod to deviate from the vertical direction. It is often necessary to operate the locking mechanism multiple times and repeat the locking and unlocking actions to keep the monopod in an upright position, which is quite laborious. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the locking operation of the ball on the tripod is relatively laborious, thereby providing a supporting tripod.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A supporting tripod comprises a tripod body with a rotation cavity at the upper end, a spherical body which is limited in a spherical surface formed by the rotation cavity and can be rotated relative to the rotation cavity, and a spherical body which is arranged in the tripod body and

[0007] A spherical swing locking mechanism for locking or releasing the spherical body; the spherical swing locking mechanism comprises:

[0008] A locking assembly, slidingly engaged with the tripod body;

[0009] a reset elastic member, elastically arranged between the locking assembly and the tripod body;

[0010] A limiting assembly connected to the tripod body, wherein the limiting assembly is provided with a movable pin cooperating with the locking assembly (4);

[0011] When the locking assembly slides under external force, the movable pin can move relative to the locking assembly and be positioned to a locked position or an unlocked position on the locking assembly;

[0012] In the locked position, the locking assembly presses against the ball to limit the ball from swinging relative to the axis of the tripod body; in the unlocked position, the locking assembly releases the ball to allow the ball to swing relative to the axis of the tripod body.

[0013] By adopting the above technical solution, when it is necessary to lock the ball on the supporting tripod, so that the ball and the external components connected thereto remain in a stable state, the locking assembly is pressed down and then released, and the movable pin moves relative to the locking assembly and is positioned in the locking locking position of the locking assembly. At this time, the locking assembly is pressed against the ball, and the ball cannot swing relative to the axis of the tripod main body. Since the size of the reset elastic member can be designed to be relatively large, the locking force applied by the locking assembly to the ball under the action of the reset elastic member will also be relatively large, and the locking effect of the ball is better; when it is necessary to allow the ball to swing relative to the axis of the tripod main body, the locking assembly is pressed down again and then released, and the movable pin moves relative to the locking assembly and is positioned in the unlocking locking position of the locking assembly, and the ball can swing relative to the axis of the tripod main body. Both the ball locking operation and the ball unlocking operation of the supporting tripod are very simple and easy.

[0014] Furthermore, when the locking assembly slides downward under the action of an external force, the movable pin can move alternately relative to the locking assembly to the first movable position and the second movable position on the locking assembly; the locking assembly can move the movable pin from the first movable position to the locked position or from the second movable position to the unlocked position under the action of the reset elastic member.

[0015] Furthermore, a limiting assembly is provided in the tripod body, the limiting assembly is fixed axially relative to the tripod body and is arranged to rotate circumferentially relative to the tripod body, and the movable pin is movably connected to the outer periphery of the limiting assembly along the radial direction of the limiting assembly.

[0016] Furthermore, a limiting elastic member is provided between the limiting assembly and the movable pin, and the limiting elastic member is used to drive one end of the movable pin to extend radially out of the outer wall surface of the limiting assembly along the limiting assembly. The inner wall surface of the locking assembly is provided with a guide groove, and the end of the movable pin extending outside the limiting assembly extends into the guide groove.

[0017] By adopting the above technical solution, the locking assembly can drive the limit assembly to rotate around its own axis through the movable pin, and the movable pin can move along the radial direction of the limit assembly. Such a setting allows the movable pin to lock the locking assembly in the locked position or the unlocked position, and the setting of the guide groove on the inner wall of the locking assembly can constrain the movement direction of the movable pin, and enable the movable pin to slide from the first movable position to the locked position and from the second movable position to the unlocked position, so as to realize the easy-to-operate function that the locking assembly of the supporting tripod is released after being pressed down once, and the ball can swing arbitrarily; the locking assembly is released after being pressed down again, and the ball can only be in a vertical state and cannot swing arbitrarily, and the structure is simple and easy to realize.

[0018] Furthermore, the locked position, the unlocked position, the first movable position, and the second movable position are located at different positions of the guide slot; in the axial direction of the locking assembly, the distance between the locked position and the ball is greater than the distance between the first movable position and the ball, the distance between the unlocked position and the ball is greater than the distance between the second movable position and the ball, and the distance between the locked position and the ball is greater than the distance between the unlocked position and the ball;

[0019] When the movable pin is in the locked position and the locking assembly is not subjected to a downward force, the movable pin and the locking assembly abut against each other along the axial direction of the locking assembly to restrict the movable pin from moving from the locked position to the first movable position;

[0020] When the movable pin is in the locked position and the locking assembly is subjected to a downward pressure, the movable pin moves from the locked position to the second movable position, and the movable pin abuts against the locking assembly to limit a first downward movement stroke of the locking assembly;

[0021] When the movable pin is in the second movable position and the downward pressure applied to the locking assembly disappears, the locking assembly moves upward under the elastic restoring force of the reset elastic member, and the movable pin moves from the second movable position to the unlocked and locked position, and the movable pin and the locking assembly abut against each other along the axial direction of the locking assembly to restrict the movable pin from moving from the unlocked and locked position to the second movable position;

[0022] When the movable pin is in the unlocked locking position and the locking assembly is subjected to a downward pressure force, the movable pin moves from the unlocked locking position to the first movable position, and the movable pin abuts against the locking assembly to limit the second downward movement stroke of the locking assembly.

[0023] By adopting the above technical solution, the setting of the locking position, unlocking position, first movable position and second movable position on the guide slide can lock the locking assembly in the locking position and unlocking position, and enable the locking assembly to automatically move from the first movable position to the locking position and automatically move from the second movable position to the unlocking position under the action of the reset elastic member.

[0024] Furthermore, the guide 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 parallel to the axial direction of the tripod body. The two ends of the first spiral groove are respectively connected to the first strip groove and the second strip groove, and the two ends of the second spiral groove are respectively connected to the first strip groove and the second strip groove.

[0025] By adopting the above technical solution, the guide groove composed 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 implement.

[0026] Furthermore, the groove depth of the first spiral groove at the end where it is connected to the first strip groove is greater than the groove depth of the first strip groove, so that the movable pin slides along the first spiral groove to the second strip groove; the groove depth of the second spiral groove at the end where it is connected to the second strip groove is greater than the groove depth of the second strip groove, so that the movable pin slides along the second spiral groove to the first strip groove.

[0027] Furthermore, the first movable position and the locking position are located at opposite ends of the first strip groove, and the second movable position and the unlocking position are located at opposite ends of the second strip groove.

[0028] By adopting the above technical solution, when the external component on the supporting tripod is in a vertical state, the movable pin is located at the connection between the first spiral groove and the first strip groove, and the locking component is pressed down. During the downward movement of the locking component, because the groove depth of the first spiral groove and the first strip groove is connected is greater than the groove depth of the first strip groove, the movable pin can only move along the first spiral groove. Under the action of the inclined groove force, the limit assembly will rotate. At this time, the movable pin will move all the way to the end where the first spiral groove and the second strip groove are connected, and then the movable pin will move to the upper end of the second strip groove. At this time, the locking assembly can no longer be pressed down; the locking assembly is released, and the locking assembly moves to the lower end of the second strip groove under the action of the reset elastic member and is locked by the movable pin. At this time, the locking protrusion will disengage from the ball, and the ball is in the unlocked state and can swing arbitrarily in the rotating cavity. When the locking assembly is pressed down again, the locking assembly moves downward, and because the groove depth at one end where the second spiral groove is 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. Under the action of the inclined groove force, the limit assembly will rotate. At this time, the movable pin will move all the way to the upper end of the first strip groove. At this time, the locking assembly can no longer be pressed down, and the locking assembly is released. The locking assembly moves to the lower end of the first strip groove under the action of the reset elastic member and is locked by the movable pin. At this time, the locking assembly will move in the direction close to the sphere until the locking protrusion enters the socket in the sphere, thereby locking the sphere and keeping the sphere in a vertical state.

[0029] Furthermore, the first strip groove, the first spiral groove, the second strip groove and the second spiral groove are sequentially arranged along the circumference of the inner wall surface of the locking assembly;

[0030] When the number of the guide grooves is one group, the first strip groove and the second spiral groove are connected end to end, and the guide grooves pass through the circumference of the inner wall surface of the locking assembly;

[0031] When there are multiple groups of guide grooves, the multiple groups of guide grooves are evenly arranged along the circumference of the inner wall surface of the locking assembly; the first strip groove of the guide grooves of the previous group is connected to the second spiral groove of the guide grooves of the latter group, and the multiple groups of guide grooves pass through the circumference of the inner wall surface of the locking assembly; the movable pin can slide alternately in the multiple groups of guide grooves.

[0032] Furthermore, the locking assembly includes an outer sleeve and an inner sleeve coaxially arranged with the tripod body, the outer sleeve and the tripod body are slidably matched, and the inner sleeve is fixed inside the outer sleeve; the guide groove is arranged on the inner wall surface of the inner sleeve.

[0033] By adopting the above technical solution, the locking assembly is manufactured in a separate manner consisting of an outer sleeve and an inner sleeve and then assembled together, which makes the processing of the locking assembly more convenient.

[0034] Furthermore, the inner sleeve is formed by splicing a plurality of arc-shaped sheets end to end.

[0035] By adopting the above technical solution, the inner sleeve is formed by splicing multiple arc-shaped pieces end to end, which reduces the difficulty of machining the above-mentioned guide groove in the inner sleeve.

[0036] Furthermore, the end of the inner sleeve is provided with a plurality of positioning pins, and the outer sleeve is provided with positioning holes that cooperate with the plurality of positioning pins.

[0037] Furthermore, the mating surface between the outer sleeve and the tripod body is a special-shaped cross-section.

[0038] By adopting the above technical solution, the mating surface between the outer sleeve and the tripod body is a special-shaped cross-section, which can easily achieve relative circumferential fixation of the locking assembly and the tripod body.

[0039] Furthermore, the outer peripheral wall of the outer sleeve is provided with a plurality of notched grooves, and the notches of the notched grooves face away from the sphere.

[0040] By adopting the above technical solution, the arrangement of the notch groove on the outer sleeve can reduce the structural strength of the outer peripheral wall of the outer sleeve, and the outer sleeve is prone to slight deformation, which facilitates the assembly of the outer sleeve into the tripod body.

[0041] Furthermore, an accommodating cavity is formed between the outer sleeve and the inner sleeve, and the reset elastic member is at least partially accommodated in the accommodating cavity.

[0042] By adopting the above technical solution, the reset elastic member is arranged in the accommodating cavity between the outer sleeve and the inner sleeve. The accommodating cavity can limit the reset elastic member, and since the outer diameter of the accommodating cavity is very close to the outer diameter of the tripod body, a reset elastic member with a large outer diameter and strong elasticity can be arranged in the tripod body, further improving the locking effect of the locking assembly on the ball under the action of the reset elastic member.

[0043] Furthermore, a plurality of movable pins are evenly arranged along the circumference of the limiting assembly, and the number of the movable pins is less than or equal to the number of the guide slots.

[0044] By adopting the above technical solution and providing multiple movable pins, the reliability of the entire spherical swing locking mechanism can be improved.

[0045] Furthermore, a limiting shaft coaxially arranged with the tripod body is fixed inside the tripod body, and the limiting component is connected to the limiting shaft by rotating around the axis of the limiting shaft. The limiting shaft is provided with a limiting step that blocks the limiting component away from the tripod body.

[0046] By adopting the above technical solution, the setting of the limit shaft and its upper limit step can improve the stability of the limit assembly during rotation, so that the limit assembly can rotate around the axial direction of the limit shaft without easily deviating up and down.

[0047] Furthermore, the limiting assembly includes an inner sleeve rotatably connected to the outer periphery of the limiting shaft, and an outer sleeve fixed on the outer periphery of the inner sleeve; the outer periphery of the inner sleeve is provided with a mounting hole, and the outer periphery of the outer sleeve is provided with a through hole corresponding to the position of the mounting hole; the limiting elastic member is arranged in the mounting hole, and one end of the movable pin is located in the mounting hole, and the other end can extend outward from the through hole.

[0048] Furthermore, a central shaft hole is provided at the center of the locking assembly, and the central shaft hole and the limiting shaft are slidably matched along the axial direction of the limiting shaft.

[0049] By adopting the above technical solution, the central axis hole of the locking assembly and the axial sliding cooperation of the limiting shaft, the limiting shaft plays a guiding role in the sliding of the locking assembly, which is conducive to ensuring that the locking assembly slides precisely along the axial direction of the limiting shaft, and then the locking protrusion of the locking assembly can accurately adjust the ball to a vertical state, avoiding the problem of the ball being misaligned when being locked due to the deviation of the movement direction of the locking assembly.

[0050] Furthermore, a socket with an opening facing the locking assembly is provided in the sphere, and a locking protrusion is provided at one end of the locking assembly facing the sphere, and the locking protrusion extends into the socket to limit the rotation of the sphere relative to the rotation cavity.

[0051] By adopting the above technical solution, when the support rod is connected to the external component of the supporting tripod, in order to keep the support rod in a vertical state for a long time, it is only necessary to press the locking component downward and then release it. The locking component moves from the first active position to the locked position under the action of the reset elastic member. At this time, the locking protrusion of the locking component extends into the slot in the ball, and the locking protrusion presses the ball from the inside out, and the ball cannot swing relative to the axis of the tripod body. This locking protrusion pushes the ball from the inside out to achieve the locking of the ball, which not only has a very good locking effect of the ball, but also Moreover, since the locking protrusion can only slide into the slot of the sphere from bottom to top along with the locking assembly, the locking protrusion will automatically drive the sphere to rotate before the locking assembly is locked. When the locking assembly is locked, the sphere is driven by the locking protrusion to move the external assembly and the support rod on it to a vertical state. After the sphere is tightened, the external assembly and the support rod on the sphere will not deviate from the vertical direction. The sphere can be locked in the vertical direction or released in one operation. There is no need to repeatedly operate to lock the sphere and the external assembly and support rod on it in the vertical state, which makes the operation simpler.

[0052] Furthermore, the locking protrusion is in the shape of a truncated cone that is smaller at the top and larger at the bottom, and the insertion hole of the ball is in the shape of a cone that has the same outer shape as the locking protrusion.

[0053] Furthermore, a top opening is provided at the upper end of the rotating cavity, and the sphere is connected to a connector extending from the top opening outside the rotating cavity; the connector is used to connect an external component.

[0054] By adopting the above technical solution, when the locking assembly is locked, the outer wall surface of the truncated cone-shaped locking protrusion and the wall of the conical hole in the sphere are tightly abutted, which can increase the contact area between the two when they are in the locked state, thereby improving the locking effect. After the sphere is locked, the external components and support rods on the sphere will not deviate from the vertical direction.

[0055] Furthermore, the external component is used to connect a support rod that supports photographic equipment or a photographic light or a photographic light cover.

[0056] Furthermore, a sliding cavity is provided in the interior of the tripod body at the lower end, and the locking assembly is slidably arranged in the sliding cavity along the axial direction of the tripod body and is fixedly arranged relative to the tripod body in the circumferential direction.

[0057] Furthermore, the tripod body includes a main body sleeve and a spherical sleeve that are coaxially arranged, the rotating cavity is located in the spherical sleeve, and the sliding cavity is located in the main body sleeve.

[0058] By adopting the above technical solution, the tripod body is assembled by the main body sleeve and the ball sleeve, and the corresponding components can be produced and assembled separately, which can reduce the difficulty of production and assembly of the product.

[0059] Furthermore, it also includes a pressing piece; one end of the pressing piece is pivotally connected to one end of the locking assembly toward the sphere, and the other end extends out of the tripod body, and the pressing piece is used to drive the locking assembly to move in a direction away from the sphere.

[0060] Furthermore, the pressing member includes an annular body fixedly connected between the main body sleeve and the spherical sleeve, and the annular body is located between the sphere and the locking assembly; the annular body is provided with a rotating shaft on the side facing the sphere, and the pressing member also includes a foot pedal with one end rotatably connected to the rotating shaft and the other end extending from the side opening outside the tripod body.

[0061] By adopting the above technical solution, a pressing piece consisting of an annular main body and a rotatable foot pedal is used. The structure is simple and easy to assemble and produce. The foot pedal is easy to step on with the foot. When locking or unlocking the ball, the operator does not need to squat, and the operation is more convenient.

[0062] Furthermore, the locking assembly can pass through the central hole of the annular body, and the foot pedal is provided with a hole for the locking assembly to pass through.

[0063] By adopting the above technical solution, the foot pedal can apply an increased downward force to the locking assembly after being pressed down.

[0064] Furthermore, a lower damping ring and an upper damping ring are arranged at intervals in the spherical sleeve, and the lower damping ring and the upper damping ring enclose the rotating cavity, and the aperture of the center hole of the lower damping ring and the aperture of the center hole of the upper damping ring are both smaller than the diameter of the sphere; the outer wall of the spherical sleeve is threadedly connected with a damping adjustment knob, and the damping adjustment knob is abutted against the upper end face of the upper damping ring. The damping adjustment knob is used to adjust the height of the upper damping ring, and thereby adjust the damping force applied to the sphere by the upper damping ring and the lower damping ring.

[0065] By adopting the above technical solution, the setting of the damping adjustment knob can adjust the damping force applied to the sphere by the upper damping ring and the lower damping ring.

[0066] Furthermore, at least three supporting legs are connected to the outer periphery of the main body sleeve.

[0067] In summary, the support leg provided by the present invention utilizes a ball locking method using a pedal pressure member. The operator only needs to step on the pedal once and then release it, and the ball will automatically find its vertical orientation and remain vertical without deviating from the vertical orientation. When the operator needs to use it, they only need to step on the pedal again and then release it, and the ball will swing to any angle. This allows the ball to be locked in the vertical orientation or released in a single operation, eliminating the need for repeated operations to lock the ball, its external components, and the support rod in the vertical position, making operation much simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0069] Figure 1 Schematic diagram of the three-dimensional structure of the supporting stand in an embodiment of the present invention;

[0070] Figure 2 An exploded schematic diagram of a supporting tripod according to an embodiment of the present invention;

[0071] Figure 3 is a cross-sectional view of a supporting stand according to an embodiment of the present invention;

[0072] Figure 4 This is a schematic diagram of the overall structure of the locking assembly in an embodiment of the present invention;

[0073] Figure 5 An exploded schematic diagram of a locking assembly according to an embodiment of the present invention;

[0074] Figure 6 Schematic diagram of the guide groove on the inner wall of the inner sleeve in an embodiment of the present invention;

[0075] Figure 7 Schematic diagram of the three-dimensional structure of the pressing member in an embodiment of the present invention;

[0076] Figure 8 2 is a cross-sectional view of a position limiting assembly in an embodiment of the present invention.

[0077] Description of reference numerals:

[0078] 1. Tripod body; 11. Main body sleeve; 111. Sliding cavity; 112. Side opening; 12. Ball sleeve; 13. Support foot;

[0079] 2. Sphere; 21. Connector; 22. Jack;

[0080] 3. External components;

[0081] 4. Locking assembly; 41. Outer sleeve; 411. Locking protrusion; 412. Notched groove; 42. Inner sleeve; 421. Guide groove; 4211. First strip groove; 4212. Second strip groove; 4213. First spiral groove; 4214. Second spiral groove; 421a. Locking position; 421b. Unlocking position; 421c. First movable position; 421d. Second movable position; 43. Accommodating chamber; 44. Locking screw; 45. Positioning pin;

[0082] 5. Reset elastic member;

[0083] 6. Pressing member; 61. Ring body; 62. Rotating shaft; 63. Foot pedal; 631. Hole;

[0084] 7. Limiting assembly; 71. Movable pin; 72. Inner sleeve; 73. Outer sleeve; 731. Concave cavity; 74. Limiting elastic member; 75. Plane bearing; 76. Locking member;

[0085] 8. Limit axis; 81. Limit step;

[0086] 91. Lower damping ring; 92. Upper damping ring;

[0087] 10. Damping adjustment knob. DETAILED DESCRIPTION

[0088] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0089] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0090] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0091] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0092] like Figure 1 - Figure 8 A supporting tripod is shown, which is primarily used in conjunction with a monopod or support rod during photography. The supporting tripod comprises a tripod body 1, a ball 2, a ball swing locking mechanism, and an external component 3. The supporting tripod is used for ground support. The ball swing locking mechanism is mounted on the tripod body 1, and the external component 3 is connected to the upper end of the ball swing locking mechanism. The external component 3 is used to connect to a single rod such as a monopod or support rod. The upper end of the monopod or support rod is used to connect to various photography-related equipment such as cameras, video cameras, mobile phones, stabilizers, video lights, and lampshades. The ball swing locking mechanism is used to lock and unlock the external component 3. When the ball swing locking mechanism is in the locked state, the external component 3 and the monopod or support rod attached thereto remain in a vertical position and do not deviate from the vertical direction. When the ball swing locking mechanism is in the unlocked state, the external component 3 and the monopod or support rod attached thereto can swing freely relative to the axis of the tripod body 1.

[0093] The tripod body 1 is a hollow tubular structure. It has a rotating chamber at the top and a sliding chamber 111 at the bottom. The bottom wall of the sliding chamber 111 is sealed, and the side walls of the sliding chamber 111 are provided with side openings 112. The upper end of the sliding chamber 111 is connected to the lower end of the rotating chamber, and the upper end of the rotating chamber is provided with a top opening.

[0094] In this embodiment, the sphere 2 is confined within the spherical surface formed by the rotating cavity, and the sphere 2 is rotatably arranged relative to the rotating cavity; the upper end of the sphere 2 is integrally formed with a connector 21 extending from the top opening outside the rotating cavity, and the external component 3 is fixed on the connector 21. The sphere swing locking mechanism includes a locking component 4, a reset elastic member 5 and a limit component 7. The locking component 4 is arranged in the sliding cavity 111 along the axial sliding of the tripod body 1, and the locking component 4 is fixed relative to the tripod body 1 in the circumferential direction. The reset elastic member 5 is elastically arranged between the locking component 4 and the tripod body 1, and the reset elastic member 5 is used to drive the locking component 4 to move in a direction close to the sphere 2. The limit component 7 is connected to the tripod body 1, and the limit component 7 is provided with a movable pin 71 that cooperates with the locking component 4.

[0095] When the locking assembly 4 slides under an external force, the movable pin 71 can be moved relative to the locking assembly 4 and positioned to the locking position 421a or the unlocking position 421b on the locking assembly 4. In the locking position 421a, the locking assembly 4 presses against the ball 2 to limit the swing of the ball 2 relative to the axis of the tripod body 1; in the unlocking position 421b, the locking assembly 4 releases the ball 2 to allow the ball 2 to swing relative to the axis of the tripod body 1. When the locking assembly 4 slides downward under the action of an external force, the movable pin 71 can also be alternately moved relative to the locking assembly 4 to the first movable position 421c and the second movable position 421d on the locking assembly 4; under the action of the reset elastic member (5), the locking assembly (4) can move the movable pin 71 from the first movable position 421c to the locking position 421a or from the second movable position 421d to the unlocking position 421b.

[0096] Under the action of an external force, the locking assembly 4 alternately moves to the first active position 421c and the second active position 421d. Under the action of the resilient member 5, the locking assembly 4 moves from the first active position 421c to the locked position 421a or from the second active position 421d to the unlocked position 421b. The limiting assembly 7 is used to lock the locking assembly 4 in the locked position 421a and the unlocked position 421b. The movable pin 71 is also used to limit the locking assembly 4 to the first active position 421c and the second active position 421d. When the movable pin 71 is in the locking position 421a, the locking assembly 4 presses against the sphere 2 to limit the swing of the sphere 2 relative to the axis of the tripod body 1, and the movable pin 71 locks the locking assembly 4 at the locking position 421a; when the movable pin 71 is in the unlocking position 421b, the locking assembly 4 releases the sphere 2 to allow the sphere 2 to swing relative to the axis of the tripod body 1, and the movable pin 71 locks the locking assembly 4 at the unlocking position 421b; when the movable pin 71 is in the first movable position 421c, the movable pin 71 limits the locking assembly 4 at the first movable position 421c to limit the first downward stroke of the locking assembly 4; when the locking assembly 4 is in the second movable position 421d, the movable pin 71 limits the locking assembly 4 at the second movable position 421d to limit the second downward stroke of the locking assembly 4.

[0097] The supporting tripod also includes a pressing member 6, one end of which acts on one end of the locking assembly 4 toward the sphere 2, and the other end extends out of the tripod body 1 from the side opening 112; the pressing member 6 is used to drive the locking assembly 4 to move away from the sphere 2.

[0098] When it is necessary to lock the monopod or support rod connected to the external component 3 in a vertical state, the pressing member 6 is pressed down and then released. The locking component 4 moves from the first movable position 421c to the locked position 421a under the action of the reset elastic member 5. At this time, the locking component 4 presses against the ball 2 upward, and the movable pin 71 and the locking component 4 are abutted along the axial direction of the locking component 4. The ball 2 cannot swing relative to the axis of the tripod body 1. The ball 2 is locked in the vertical state, and the external component 3 and the monopod or support rod connected to the corresponding ball 2 are also kept in the vertical state. The sphere 2 and the external component 3 connected thereto are held in a vertical position; when it is desired to allow the sphere 2 and the external component 3 connected thereto to swing about the axis of the tripod body 1, the pressing member 6 is pressed down again and then released. The locking member 4, under the action of the return spring 5, moves from the second movable position 421d to the unlocked locking position 421b. The locking member 4 releases the sphere 2, and the movable pin 71 and the locking member 4 abut against each other along the axial direction of the locking member 4. The sphere 2 can freely swing about the axis of the tripod body 1 within the rotation chamber, and the external component 3 connected to the sphere 2 and the monopod or support rod can also freely swing. With a single operation, the sphere 2 on the tripod can be locked and unlocked. This is a very simple and easy operation, which can significantly improve the product competitiveness of the tripod.

[0099] In some embodiments, the ball 2 is provided with a socket 22 that opens toward the locking assembly 4. The locking assembly 4 has a locking protrusion 411 on one end facing the ball 2, which projects outward from the ball 2. The locking protrusion 411 can be inserted into the socket 22 to restrict the ball 2 from rotating relative to the rotation chamber. When the locking assembly 4 is in the locked state, the locking protrusion 411 of the locking assembly 4 extends into the slot in the ball 2, pressing against the ball 2 from the inside out, preventing the ball 2 from rotating relative to the rotation chamber. This method of using the locking protrusion 411 to expand the sphere 2 from the inside out to achieve locking of the sphere 2 not only has a very good locking effect on the sphere 2; moreover, because the locking protrusion 411 can only slide into the slot of the sphere 2 from bottom to top along with the locking assembly 4, the locking protrusion 411 automatically drives the sphere 2 to rotate before the locking assembly 4 moves to the locking position. When the locking assembly 4 moves to the locking position, the sphere 2 is driven by the locking protrusion 411 to make the external assembly 3 on it vertical. After the sphere 2 is stretched, the external assembly 3 on the sphere 2 will not deviate from the vertical direction. The sphere 2 can be locked in the vertical direction or released in a single operation, without having to repeatedly operate to lock the sphere 2, the external assembly 3 on it, and the monopod or support rod in the vertical state, making operation more simple. In some alternative embodiments, the sphere 2 may not be provided with the insertion hole 22, and the locking protrusion 411 may not be provided on the locking assembly 4. The locking assembly 4 may directly or indirectly abut against the lower end of the sphere 2 to achieve locking or unlocking of the sphere 2. In other alternative embodiments, a damping pad is provided within the tripod body 1, positioned between the sphere 2 and the locking assembly 4. The damping pad defines a portion of the outer spherical surface of the rotation chamber. The locking assembly 4 drives the damping pad upward, thereby locking the sphere 2.

[0100] In some embodiments, the locking projection 411 is truncated cone-shaped, with a smaller top and a larger bottom. The insertion hole 22 of the sphere 2 is tapered to match the locking projection 411. When the locking assembly 4 is locked, the outer wall of the truncated cone-shaped locking projection 411 and the wall of the tapered hole in the sphere 2 tightly abut against each other, increasing the contact area between the two in the locked state and thereby improving the locking effect. Once the sphere 2 is locked, the external assembly 3 and the support rod on the sphere 2 will not deviate from the vertical orientation.

[0101] In some embodiments, a limiting assembly 7 is disposed within the tripod body 1, and a cavity is defined within the locking assembly 4. When the locking assembly 4 slides vertically, the limiting assembly 7 can extend into the cavity within the locking assembly 4. The limiting assembly 7 is axially fixed relative to the tripod body 1 and rotatably disposed relative thereto. A movable pin 71 is movably connected to the limiting assembly 7 along its radial direction. The movable pin 71 is used to lock the locking assembly 4 in the locked position 421a or the unlocked position 421b. When the locking assembly 4 slides downward under the action of the pressing member 6, the locking assembly 4 can drive the limiting assembly 7 to rotate about its own axis via the movable pin 71. When the locking assembly 4 rebounds upward under the elastic action of the return elastic member 5, the movable pin 71 automatically remains stationary, but its position on the locking assembly 4 moves linearly from the first movable position 421c to the locked position 421a, or from the second movable position 421d to the unlocked position 421b. In an alternative embodiment, the limit assembly 7 can also be set on the outside of the locking assembly 4 or the tripod body 1. As long as the limit assembly 7 can lock the locking assembly 4 in the locking position 421a and the unlocking position 421b, the limit assembly 7 can be one and located at a specific position, or there can be multiple limit assemblies 7, and the multiple limit assemblies 7 lock or limit the locking assembly 4 at different positions.

[0102] In some embodiments, a limiting elastic member 74 is provided between the limiting assembly 7 and the movable pin 71. The limiting elastic member 74 is used to drive one end of the movable pin 71 to extend radially out of the outer wall of the limiting assembly 7 along the limiting assembly 7. The inner wall of the locking assembly 4 is provided with a guide slot 421, and the end of the movable pin 71 extending out of the outer wall of the limiting assembly 7 extends into the guide slot 421. The provision of the guide slot 421 on the inner wall of the locking assembly 4 can constrain the movement direction of the movable pin 71, so that the movable pin 71 can lock the locking assembly 4 in the locked locking position 421a or the unlocked locking position 421b, and the movable pin 71 can slide from the first movable position 421c to the locked locking position 421a and from the second movable position 421d to the unlocked locking position 421b, thereby achieving one-step locking and one-step unlocking of the support stand, which is very simple to operate. In the locked state, the sphere 2 and the external assembly 3 thereon are automatically in a vertical state; in the unlocked state, the sphere 2 and the external assembly 3 thereon can swing freely.

[0103] In some embodiments, the locking position 421a, the unlocking position 421b, the first movable position 421c, and the second movable position 421d are located at different positions on the guide slot 421; in the axial direction of the locking assembly 4, the distance between the locking position 421a and the ball 2 is greater than the distance between the first movable position 421c and the ball 2, the distance between the unlocking position 421b and the ball 2 is greater than the distance between the second movable position 421d and the ball 2, and the distance between the locking position 421a and the ball 2 is greater than the distance between the unlocking position 421b and the ball 2. When the movable pin 71 is in the locking position 421a and the locking assembly 4 is not subjected to a downward force, the movable pin 71 abuts against the locking assembly 4 along the axial direction of the locking assembly 4 to restrict the locking assembly 4 from moving from the locking position 421a to the first movable position 421c. When the movable pin 71 is in the locked position 421a and the locking assembly 4 is subjected to the downward pressure of the pressing member 6, the movable pin 71 moves from the locked position 421a to the second movable position 421d, and the movable pin 71 abuts against the locking assembly 4 to limit the first downward movement stroke of the locking assembly 4. When the movable pin 71 is in the second movable position 421d and the downward pressure of the pressing member 6 on the locking assembly 4 disappears, the locking assembly 4 moves upward under the elastic restoring force of the reset elastic member 5, and the movable pin 71 moves from the second movable position 421d to the unlocked locking position 421b. The movable pin 71 abuts against the locking assembly 4 along the axial direction of the locking assembly 4 to limit the movement of the locking assembly 4 from the unlocked locking position 421b to the second movable position 421d. When the movable pin 71 is in the unlocked locking position 421b and the locking assembly 4 is subjected to the downward pressure of the pressing member 6, the movable pin 71 moves from the unlocked locking position 421b to the first movable position 421c, and the movable pin 71 abuts against the locking assembly 4 to limit the second downward movement stroke of the locking assembly 4. The arrangement of the locking position 421a, the unlocked locking position 421b, the first movable position 421c, and the second movable position 421d on the guide slot 421 can lock the locking assembly 4 in the locked locking position 421a and the unlocked locking position 421b, and enable the locking assembly 4 to automatically move from the first movable position 421c to the locked locking position 421a and from the second movable position 421d to the unlocked locking position 421b under the action of the reset elastic member 5.

[0104] In some embodiments, the guide 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 lengths of the first strip groove 4211 and the second strip groove 4212 are parallel to the axial direction of the tripod body 1. The two ends of the first spiral groove 4213 are respectively connected to the first strip groove 4211 and the second strip groove 4212, and the two ends of the second spiral groove 4214 are respectively connected to the first strip groove 4211 and the second strip groove 4212. 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 locking position 421a are located at opposite ends of the first strip groove 4211, while the second movable position 421d and the unlocking position 421b are located at opposite ends of the second strip groove 4212. Furthermore, the locking position 421a is located at the end where the first spiral groove 4213 connects to the first strip groove 4211, while the unlocking position 421b is located at the end where the second spiral groove 4214 connects to the second strip groove 4212. The guide slot 421, which is composed 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 implement.

[0105] In some embodiments, the groove depth of the first spiral groove 4213 at the end connected to the first strip groove 4211 is greater than the groove depth of the first strip groove 4211, so that the movable pin 71 slides along the first spiral groove 4213 to the second strip groove 4212; the groove depth of the second spiral groove 4214 at the end 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 slides along the second spiral groove 4214 to the first strip groove 4211. When the external component 3 on the supporting tripod is in a vertical state, the movable pin 71 is located at the connection between the first spiral groove 4213 and the first strip groove 4211, and the pressing member 6 is pressed down. The pressing member 6 applies a downward pressure to the locking component 4, and the locking component 4 moves downward. During the downward movement, because the groove depth of the end where the first spiral groove 4213 is connected to the first strip groove 4211 is greater than the groove depth of the first strip groove 4211, the movable pin 71 can only move along the first spiral groove 4213. Under the action of the inclined groove force, the limit When the locking assembly 4 is in a state of being locked, the locking cam 71 is in a state of being locked and the locking cam 72 is in a state of being locked. When the locking member 4 is in the downward direction, the locking member 4 can move in a direction close to the ball 2 until the locking protrusion 411 enters the socket 22 in the ball 2, thereby locking the ball 2 and keeping the ball 2 in a vertical position.

[0106] 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 arranged along the circumference of the inner wall of the locking assembly 4. The guide grooves 421 are provided in one group, the first strip groove 4211 and the second spiral groove 4214 are connected end to end, and the guide grooves 421 extend along the circumference of the inner wall of the locking assembly 4. In another embodiment, the guide grooves 421 are provided in multiple groups, and the multiple groups of guide grooves 421 are evenly arranged along the circumference of the inner wall of the locking assembly 4; the first strip groove 4211 of the first group of guide grooves 421 is connected to the second spiral groove 4214 of the second group of guide grooves 421, and the multiple groups of guide grooves 421 extend along the circumference of the inner wall of the locking assembly 4; and the movable pin 71 can slide alternately in the multiple groups of guide grooves 421.

[0107] In some embodiments, three movable pins 71 are evenly arranged along the circumference of the stop assembly 7, and the number of movable pins 71 is equal to the number of guide slots 421. The provision of multiple movable pins 71 can improve the reliability of the entire locking mechanism. It is contemplated that the number of movable pins 71 can also be less than the number of guide slots 421, for example, the number of movable pins 71 can be two.

[0108] In some embodiments, the locking assembly 4 includes an outer sleeve 41 and an inner sleeve 42 coaxially disposed with the tripod body 1. The outer sleeve 41 slidably engages the sliding cavity 111, and the inner sleeve 42 is secured to the interior of the outer sleeve 41 via multiple sets of locking screws. A guide groove 421 is recessed into the inner wall of the inner sleeve 42. The end of the inner sleeve 42 is provided with multiple locating pins 45, and the outer sleeve 41 is provided with locating holes that engage with the multiple locating pins 45. The locking assembly 4 is manufactured as a separate body consisting of the outer sleeve 41 and the inner sleeve 42, and then assembled together, making it more convenient to manufacture.

[0109] In some embodiments, the inner sleeve 42 is formed by three arc-shaped pieces spliced end to end; such a configuration can reduce the difficulty of machining the above-mentioned guide groove 421 in the inner sleeve 42.

[0110] In some embodiments, the mating surface between the outer sleeve 41 and the tripod body 1 is a special-shaped cross-section; this can easily achieve the relative circumferential fixed setting of the locking component 4 and the tripod body 1, and the assembly is simple.

[0111] In some embodiments, the outer wall of the outer sleeve 41 is provided with three notched grooves 412, with the notches of the three notched grooves 412 facing away from the sphere 2. The provision of the notched grooves 412 on the outer wall of the outer sleeve 41 can reduce the structural strength of the outer sleeve 41, making the outer wall of the outer sleeve 41 more susceptible to slight deformation, thereby facilitating the assembly of the outer sleeve 41 into the sliding cavity 111 of the tripod body 1.

[0112] In some embodiments, an accommodating cavity 43 is formed between the outer sleeve 41 and the inner sleeve 42, and the resetting elastic member 5 is at least partially accommodated in the accommodating cavity 43. With this arrangement, the locking assembly 4 can limit the resetting elastic member 5 through the accommodating cavity 43. Moreover, since the outer diameter of the accommodating cavity 43 is very close to the outer diameter of the tripod body 1, a resetting elastic member 5 with a large outer diameter and strong elasticity can be installed in the tripod body 1, further improving the locking effect of the locking assembly 4 on the ball 2 under the action of the resetting elastic member 5.

[0113] In some embodiments, a stop shaft 8 is fixed coaxially with the tripod body 1 within the tripod body 1. A stop assembly 7 is rotatably connected to the stop shaft 8 about its axis. The stop shaft 8 is provided with a stop step 81 that blocks the stop assembly 7 from the tripod body 1. The stop shaft 8 and its upper stop step 81 enhance the stability of the stop assembly 7 during rotation, ensuring that the stop assembly 7 can rotate about the axis of the stop shaft 8 without causing vertical deviation. The stop assembly 7 includes an inner sleeve 72 rotatably connected to the outer periphery of the stop shaft 8 and an outer sleeve 73 that is fixedly mounted on the outer periphery of the inner sleeve 72. The outer periphery of the inner sleeve 72 is provided with a mounting hole, and the outer periphery of the outer sleeve 73 is provided with a through hole corresponding to the mounting hole. A stop elastic member 74 is disposed within the mounting hole. A movable pin 71 has one end positioned within the mounting hole and the other end extending outward from the through hole. The outer sleeve 73 has a recessed cavity 731 that aligns with the stop step 81 of the stop shaft 8.

[0114] In some embodiments, a central axis hole is provided at the center of the outer sleeve 41, and the central axis hole is slidably engaged with the limiting shaft 8 along the axial direction of the limiting shaft 8. In this arrangement, the limiting shaft 8 guides the sliding of the locking assembly 4, which helps to ensure that the locking assembly 4 slides accurately along the axial direction of the limiting shaft 8, thereby allowing the locking protrusion 411 of the locking assembly 4 to accurately adjust the ball 2 to a vertical state, avoiding the problem of the ball 2 being misaligned when being locked due to the deviation of the movement direction of the locking assembly 4.

[0115] In some embodiments, the tripod body 1 includes a coaxially arranged main body sleeve 11 and a spherical sleeve 12, with the rotating cavity located within the spherical sleeve 12 and the sliding cavity 111 located within the main body sleeve 11. The tripod body 1 is assembled from the main body sleeve 11 and the spherical sleeve 12, allowing for separate production and assembly of the corresponding components, thereby reducing the difficulty of product production and assembly.

[0116] In some embodiments, the pressing member 6 includes an annular body 61 fixedly connected between the main body sleeve 11 and the ball sleeve 12. The annular body 61 is positioned between the ball 2 and the locking assembly 4. A rotating shaft 62 is provided on the side of the annular body 61 facing the ball 2. The pressing member 6 also includes a foot pedal 63, one end of which is rotatably connected to the rotating shaft 62 and the other end of which extends out of the tripod body 1 through a side opening 112. The pressing member 6, comprising the annular body 61 and the rotatable foot pedal 63, has a simple structure and is easy to assemble and manufacture. The foot pedal 63 is easy to step on, eliminating the need for the operator to squat when locking or unlocking the ball 2, making operation more convenient. The locking boss can pass through the center hole of the annular body 61, and the foot pedal 63 has a hole for the locking boss to pass through. This arrangement facilitates the foot pedal 63 to exert an increased downward force on the locking assembly 4 when pressed downward.

[0117] In some embodiments, a lower damping ring 91 and an upper damping ring 92 are spaced apart in the spherical sleeve 12, and the lower damping ring 91 and the upper damping ring 92 enclose a rotating cavity, and the aperture of the center hole of the lower damping ring 91 and the aperture of the center hole of the upper damping ring 92 are both smaller than the diameter of the sphere 2; the outer wall of the spherical sleeve 12 is threadedly connected with a damping adjustment knob 10, and the damping adjustment knob 10 is abutted against the upper end face of the upper damping ring 92. The damping adjustment knob 10 is used to adjust the height of the upper damping ring 92, and thereby adjust the damping force applied to the sphere 2 by the upper damping ring 92 and the lower damping ring 91.

[0118] In summary, the support leg provided by the present invention utilizes a pedal-type locking method for ball 2. The operator only needs to step on foot pedal 63 once and then release it, and ball 2 will automatically find its vertical orientation and remain upright without deviating from the vertical orientation. When the operator needs to use it, they only need to step on foot pedal 63 again and then release it, and ball 2 can be swung to any angle. This single operation can lock or release ball 2 in the vertical orientation, eliminating the need for repeated operations to lock ball 2, its external assembly 3, and support rod in the vertical position, making operation much simpler.

[0119] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A support tripod, characterized in that: The invention comprises a tripod body (1) with a rotation cavity provided at the upper end, a sphere (2) which is limited in a spherical surface formed by the rotation cavity and is rotatably arranged relative to the rotation cavity, and a sphere swing locking mechanism which is arranged in the tripod body (1) and is used to lock or release the sphere (2); the sphere swing locking mechanism comprises: A locking assembly (4) slidingly engaged with the tripod body (1); a reset elastic member (5) elastically arranged between the locking assembly (4) and the tripod body (1); A limiting assembly (7) is connected to the tripod body (1), and the limiting assembly (7) is provided with a movable pin (71) that cooperates with the locking assembly (4); When the locking assembly (4) slides under an external force, the movable pin (71) can move relative to the locking assembly (4) and be positioned to a locking position (421a) or an unlocking position (421b) on the locking assembly (4); In the locking position (421a), the locking assembly (4) presses against the sphere (2) to limit the sphere (2) from swinging relative to the axis of the tripod body (1); in the unlocking position (421b), the locking assembly (4) releases the sphere (2) to allow the sphere (2) to swing relative to the axis of the tripod body (1).

2. The support stand according to claim 1, wherein: When the locking assembly (4) slides downward under the action of an external force, the movable pin (71) can be alternately moved relative to the locking assembly (4) to a first movable position (421c) and a second movable position (421d) on the locking assembly (4); and under the action of the resetting elastic member (5), the locking assembly (4) can move the movable pin (71) from the first movable position (421c) to the locking position (421a) or from the second movable position (421d) to the unlocking position (421b).

3. The support stand according to claim 2, wherein: The limiting assembly (7) and the tripod body (1) are fixed in the axial direction relative to each other and are arranged to rotate in the circumferential direction relative to each other. The movable pin (71) is movably connected to the outer periphery of the limiting assembly (7) along the radial direction of the limiting assembly (7).

4. The support stand according to claim 3, characterized in that: A limiting elastic member (74) is provided between the limiting assembly (7) and the movable pin (71), and the limiting elastic member (74) is used to drive one end of the movable pin (71) to extend radially out of the outer wall surface of the limiting assembly (7) along the limiting assembly (7). A guide slot (421) is provided on the inner wall surface of the locking assembly (4), and the end of the movable pin (71) extending out of the limiting assembly (7) extends into the guide slot (421).

5. The support stand according to claim 4, characterized in that: The locking 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 slot (421); in the axial direction of the locking assembly (4), the distance between the locking position (421a) and the ball (2) is greater than the distance between the first movable position (421c) and the ball (2), the distance between the unlocking position (421b) and the ball (2) is greater than the distance between the second movable position (421d) and the ball (2), and the distance between the locking position (421a) and the ball (2) is greater than the distance between the unlocking position (421b) and the ball (2); When the movable pin (71) is in the locking position (421a) and the locking assembly (4) is not subjected to a downward pressure force, the movable pin (71) and the locking assembly (4) abut against each other along the axial direction of the locking assembly (4) to limit the movable pin (71) from moving from the locking position (421a) to the first movable position (421c); When the movable pin (71) is in the locking position (421a) and the locking assembly (4) is subjected to a downward pressure force, the movable pin (71) moves from the locking position (421a) to the second movable position (421d), and the movable pin (71) abuts against the locking assembly (4) to limit a first downward movement stroke of the locking assembly (4); When the movable pin (71) is in the second movable position (421d) and the downward pressure force on the locking assembly (4) disappears, the locking assembly (4) moves upward under the elastic restoring force of the reset elastic member (5), and the movable pin (71) moves from the second movable position (421d) to the unlocking and locking position (421b), and the movable pin (71) and the locking assembly (4) abut against each other along the axial direction of the locking assembly (4) to limit the movable pin (71) from moving from the unlocking and locking position (421b) to the second movable position (421d); When the movable pin (71) is in the unlocking and locking position (421b) and the locking assembly (4) is subjected to a downward pressure force, the movable pin (71) moves from the unlocking and locking position (421b) to the first movable position (421c), and the movable pin (71) abuts against the locking assembly (4) to limit a second downward movement stroke of the locking assembly (4).

6. The support stand according to claim 5, characterized in that: The guide 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 parallel to the axial direction of the tripod body (1); the two ends of the first spiral groove (4213) are respectively connected to the first strip groove (4211) and the second strip groove (4212); the two ends of the second spiral groove (4214) are respectively connected to the first strip groove (4211) and the second strip groove (4212).

7. The support stand according to claim 6, characterized in that: The groove depth of the end where the first spiral groove (4213) is connected to the first strip groove (4211) is greater than the groove depth of the first strip groove (4211), so that the movable pin (71) slides along the first spiral groove (4213) to the second strip groove (4212); the groove depth of the end where the second spiral groove (4214) is 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) slides along the second spiral groove (4214) to the first strip groove (4211).

8. The support stand according to claim 7, characterized in that: The first active position (421c) and the locking position (421a) are located at opposite ends of the first strip groove (4211), and the second active position (421d) and the unlocking position (421b) are located at opposite ends of the second strip groove (4212).

9. The support stand according to claim 6, characterized in that: The first strip groove (4211), the first spiral groove (4213), the second strip groove (4212) and the second spiral groove (4214) are sequentially arranged along the circumference of the inner wall surface of the locking assembly (4); When the number of the guide slots (421) is one group, the first strip slot (4211) and the second spiral slot (4214) are connected end to end, and the guide slots (421) are passed through along the circumferential direction of the inner wall surface of the locking assembly (4); When there are multiple groups of guide grooves (421), the multiple groups of guide grooves (421) are evenly arranged along the circumference of the inner wall surface of the locking assembly (4); the first strip groove (4211) of the first group of guide grooves (421) and the second spiral groove (4214) of the second group of guide grooves (421) are connected, and the multiple groups of guide grooves (421) are connected along the circumference of the inner wall surface of the locking assembly (4); the movable pin (71) can slide alternately in the multiple groups of guide grooves (421).

10. The support stand according to any one of claims 4 to 9, characterized in that: The locking assembly (4) comprises an outer sleeve (41) and an inner sleeve (42) coaxially arranged with the tripod body (1); the outer sleeve (41) and the tripod body (1) are slidably matched, and the inner sleeve (42) is fixed inside the outer sleeve (41); the guide groove (421) is arranged on the inner wall surface of the inner sleeve (42).

11. The support stand according to claim 10, characterized in that: The inner sleeve (42) is formed by splicing a plurality of arc-shaped sheets end to end.

12. The support stand according to claim 10, wherein: The outer peripheral wall of the outer sleeve (41) is provided with a plurality of notched grooves (412), and the notches of the notched grooves (412) face away from the sphere (2).

13. The support stand according to claim 10, wherein: An accommodating cavity (43) is formed between the outer sleeve (41) and the inner sleeve (42), and the resetting elastic member (5) is at least partially accommodated in the accommodating cavity (43).

14. The support stand according to claim 3, wherein: A limiting shaft (8) coaxially arranged with the tripod body (1) is fixed inside the tripod body (1); the limiting assembly (7) is rotatably connected to the limiting shaft (8) around the axis of the limiting shaft (8); and a limiting step (81) is provided on the limiting shaft (8) to block the limiting assembly (7) from the side away from the tripod body (1).

15. The support stand according to claim 14, characterized in that: A central shaft hole is provided at the center of the locking assembly (4), and the central shaft hole and the limiting shaft (8) are slidably matched along the axial direction of the limiting shaft (8).

16. The support stand according to claim 1, wherein: The sphere (2) is provided with a socket (22) with an opening facing the locking assembly (4), and the locking assembly (4) is provided with a locking protrusion (411) at one end facing the sphere (2). The locking protrusion (411) extends into the socket (22) to limit the swing of the sphere (2) relative to the axis of the tripod body (1).

17. The support stand according to claim 16, wherein: The locking protrusion (411) is in the shape of a truncated cone that is smaller at the top and larger at the bottom, and the insertion hole (22) of the sphere (2) is in the shape of a cone that has the same outer shape as the locking protrusion (411).

18. The support stand according to claim 1, wherein: The upper end of the rotating chamber is provided with a top opening, and the sphere (2) is connected to a connector (21) extending from the top opening outside the rotating chamber; the connector (21) is used to connect an external component (3).

19. The support stand according to claim 18, wherein: The external component (3) is used to connect a support rod or a monopod for supporting photographic equipment.

20. The support stand according to claim 1, wherein: The interior of the tripod body (1) is further provided with a sliding cavity (111) at the lower end, and the locking assembly (4) is arranged in the sliding cavity (111) along the axial direction of the tripod body (1) and is fixed relative to the tripod body (1) in the circumferential direction.

21. The support stand according to claim 20, wherein: The tripod body (1) comprises a main body sleeve (11) and a spherical sleeve (12) arranged coaxially, the rotating cavity is located in the spherical sleeve (12), and the sliding cavity (111) is located in the main body sleeve (11).

22. The support stand according to claim 21, wherein: It also includes a pressing member (6); one end of the pressing member (6) is pivotally connected to one end of the locking assembly (4) toward the sphere (2), and the other end extends out of the tripod body (1); the pressing member (6) is used to drive the locking assembly (4) to move in a direction away from the sphere (2).

23. The support stand according to claim 22, wherein: The pressing member (6) comprises an annular main body (61) fixedly connected between the main body sleeve (11) and the spherical sleeve (12), and the annular main body (61) is located between the spherical body (2) and the locking assembly (4); a rotating shaft (62) is provided on the side of the annular main body (61) facing the spherical body (2), and the pressing member (6) further comprises a pedal (63) with one end rotatably connected to the rotating shaft (62) and the other end extending outside the tripod main body (1).

24. The support stand according to claim 23, wherein: The foot pedal (63) is provided with a hole for the locking assembly (4) to pass through.

25. The support stand according to claim 21, wherein: The spherical sleeve (12) is provided with a lower damping ring (91) and an upper damping ring (92) arranged at intervals, and the lower damping ring (91) and the upper damping ring (92) enclose the rotating cavity, and the aperture of the center hole of the lower damping ring (91) and the aperture of the center hole of the upper damping ring (92) are both smaller than the diameter of the sphere (2); the outer wall of the spherical sleeve (12) is threadedly connected with a damping adjustment knob (10), and the damping adjustment knob (10) is abutted against the upper end surface of the upper damping ring (92), and the damping adjustment knob (10) is used to adjust the damping force applied to the sphere (2) by the upper damping ring (92) and the lower damping ring (91).

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