A bracket with built-in three-cut seat

Abstract

The present invention discloses a bracket with a built-in three-cut seat, comprising: a rod body, a tube cavity is provided inside the rod body at one end of the rod body, a three-cut seat is provided in the tube cavity, and the three-cut seat is provided with three leg assemblies extending out of the tube cavity distributed around the vertical center line of the three-cut seat, and the leg assembly can be rotated downward relative to the three-cut seat to an unfolded state, or rotated upward relative to the three-cut seat to a storage state converged to the outer peripheral wall of the rod body. The bracket of the above structure embeds the three-cut seat in the tube cavity to realize the integrated setting of the three-cut seat and the rod body, reduce the material cost, and also reduce the parts used to connect the three-cut seat and the rod body, simplifying the production and assembly process. The three-cut seat is embedded in the tube cavity so that the three-cut seat will not protrude in the radial direction of the rod body, and the leg assembly adopts an upward folding method, so the size of the stent after storage is small, which is convenient for carrying and transportation.

Description

Technical Field

[0001] The invention relates to a bracket with a three-cut seat built in. Background Art

[0002] In the related art, a bracket used for photography or projection includes a three-way stand, on which are provided three legs distributed in a circle around its vertical center line. In order to set up the photographic equipment or the projection equipment, an upwardly extending rod is usually provided above the three-way stand, and the upper end of the rod is connected to a pan / tilt head for mounting the photographic equipment or the projection equipment.

[0003] There are two main ways of connecting the three-cut seat and the rod. One is that the rod is passed through the center of the three-cut seat and fixed with fasteners. The other is that the lower end of the rod and the three-cut seat are connected by a threaded structure.

[0004] The above two connection methods have the following defects respectively: the method of passing the rod through the center position of the three-cut seat requires that the radial dimension of the three-cut seat is much larger than the diameter of the rod, the volume of the bracket after folding and storage is large, which is not convenient for transportation and carrying, and corresponding fasteners are required to connect the rod and the three-cut seat.

[0005] When the lower end of the rod and the three-cut seat are connected by a threaded structure, since the rod is usually made of pipes, it is often necessary to set a mounting plate at the lower end of the rod, and then use fastening screws to connect the mounting plate and the three-cut seat. This results in the need to increase parts and assembly steps, increase material costs and production costs for assembly between the three-cut seat and the rod. Moreover, the connection strength of the three-cut seat and the rod connected by fastening screws is insufficient and it is difficult to withstand large loads. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a bracket with a built-in three-cut seat, wherein the three-cut seat of the bracket is integrated with the rod body, thereby reducing material costs and production costs.

[0007] According to an embodiment of the present invention, a bracket with a built-in three-cut seat includes: a rod body, a tubular cavity is provided at one end of the rod body, a three-cut seat is arranged in the tubular cavity, and the three-cut seat is circumferentially distributed around its vertical center line with three support leg assemblies extending out of the tubular cavity, and the support leg assembly can be rotated downward relative to the three-cut seat to an expanded state, or rotated upward relative to the three-cut seat to a storage state converged to the outer peripheral wall of the rod body.

[0008] A bracket built into a three-cut seat according to an embodiment of the present invention has at least the following beneficial effects:

[0009] The bracket of the above structure is provided with a tubular cavity at the end of the rod body, and the three-cut seat is built into the tubular cavity. The support leg assembly on the three-cut seat extends out of the tubular cavity, and the support leg assembly can be rotated downward to an expanded state or rotated upward to a stored state. The method of embedding the three-cut seat into the tubular cavity realizes the integrated setting of the three-cut seat and the rod body, reduces the material cost, and also reduces the parts used to connect the three-cut seat and the rod body, simplifies the production and assembly process, and the three-cut seat will not protrude radially along the rod body. The support leg assembly is folded upward for storage, so the size of the bracket after folding and storage is small, which is convenient for carrying and transportation.

[0010] In some embodiments of the present invention, the support leg assembly includes a connecting rod rotatably arranged on the outer periphery of the three-cut seat, the connecting rod can rotate up and down relative to the three-cut seat, the outer peripheral wall of the rod body is provided with a first notch groove connected to the tubular cavity and for the connecting rod to rotate up and down, and a limit turntable is rotatably arranged at the bottom of the three-cut seat, the limit turntable has a second notch groove for the connecting rod to pass through, and the limit turntable can abut against the connecting rod to stabilize the support leg assembly in the expanded state or the stored state.

[0011] In some embodiments of the present invention, the outer peripheral wall of the rod body is a cylindrical surface, the limit turntable includes a bottom plate rotatably arranged on the bottom surface of the three-cut seat and an arc-shaped guide plate arranged on the bottom plate and close to the cylindrical surface, the second notch groove includes a vertical groove opened on the arc-shaped guide plate along the length direction of the rod body and an arc-shaped groove arranged on the bottom plate and connected to the vertical groove, the connecting rod can swing up and down along the vertical groove and rotate along the arc-shaped groove around the vertical center line of the three-cut seat.

[0012] In some embodiments of the present invention, the three-cut seat includes an upper connecting seat and a lower connecting seat embedded in the tubular cavity, the upper end of the connecting rod is provided with a pivot portion, the upper connecting seat and the lower connecting seat define a pivot groove for accommodating the pivot portion, the upper surface of the base plate abuts against the lower surface of the lower connecting seat, and a threaded fastener is passed through the base plate, the lower connecting seat and the upper connecting seat along the vertical center line of the three-cut seat, and the limit turntable can rotate around the threaded fastener.

[0013] In some embodiments of the present invention, the outer wall of the tripod is connected to the inner wall of the lumen via a rotating clamping structure.

[0014] In some embodiments of the present invention, the rotating clamping structure includes a guide groove and a positioning groove which are arranged on the inner wall of the tubular cavity and extend along the length direction of the tubular cavity, the positioning groove is connected with the side of the guide groove, the inner wall of the tubular cavity is provided with an anti-slip groove which is connected with the side of the guide groove and is arranged around the circumference of the tubular cavity, and the outer wall of the three-cut seat is provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion can both move back and forth along the length direction of the guide groove, the first protrusion can enter the positioning groove from the guide groove to prevent the three-cut seat from rotating relative to the rod body, and at the same time, the second protrusion can enter the anti-slip groove from the guide groove to limit the movement of the three-cut seat along the length direction of the rod body.

[0015] In some embodiments of the present invention, the first protrusion, the second protrusion, the guide groove, the positioning groove and the anti-slip groove are each provided in plurality and in equal numbers, and the plurality of the first protrusions and the plurality of the second protrusions are circumferentially distributed on the outer peripheral wall of the three-cut seat around the vertical center line of the three-cut seat, the second protrusion corresponds one-to-one to the first protrusion, and the plurality of the guide grooves and the plurality of the positioning grooves are circumferentially distributed on the inner wall of the lumen around the axis of the rod body.

[0016] In some embodiments of the present invention, the rod body includes an inner tube and an outer tube sleeved on the outside of the inner tube, the inner tube can be telescopically moved along the length direction of the outer tube, a telescopic locking structure is provided between the outer tube and the inner tube, and the internal channel of the outer tube constitutes the lumen.

[0017] In some embodiments of the present invention, the telescopic locking structure includes a third protrusion and a fourth protrusion protruding from the outer wall of the inner tube, and the third protrusion and the fourth protrusion can both move back and forth along the length direction of the guide groove, and the third protrusion can enter the positioning groove from the guide groove to prevent the inner tube from rotating relative to the outer tube. At the same time, the fourth protrusion can enter the anti-slip groove from the guide groove to limit the telescopic movement of the inner tube relative to the outer tube.

[0018] In some embodiments of the present invention, a mounting seat is provided at the other end of the rod body, a spherical cavity is provided in the mounting seat, a sphere is movably provided in the spherical cavity, a tightening member is movably passed through the sphere and can extend from the surface of the sphere to tighten against the spherical cavity, and a threaded rod and a mounting platform for the threaded rod to pass through are provided at one end of the tightening member away from the sphere.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a bracket built into a three-cut seat of the present invention in an unfolded state;

[0022] Figure 2 for Figure 1 A schematic diagram of a structure in which the rod body, the three-cut seat, the connecting rod and the limit rotating disk are separated in the embodiment;

[0023] Figure 3 It is a structural schematic diagram of an embodiment of a bracket built into a three-cutting seat of the present invention in a storage state;

[0024] Figure 4 for Figure 3 An internal cross-sectional schematic diagram of an embodiment;

[0025] Figure 5 The figure is a schematic structural diagram of an embodiment of a rod body in which an inner tube and an outer tube are separated.

[0026] Reference numerals:

[0027] Rod body 100; inner tube 110; outer tube 120; first notch groove 121;

[0028] Three-cut seat 200; connecting seat 210; connecting seat 220; second protrusion 211; first protrusion 221;

[0029] Support leg assembly 300; connecting rod 310; pivoting portion 311;

[0030] Limiting turntable 400; bottom plate 401; arc-shaped guide plate 402; second notch groove 410; vertical groove 411; arc-shaped groove 412

[0031] Threaded fastener 500;

[0032] Guide groove 610; positioning groove 620; anti-slip groove 630;

[0033] Telescopic locking structure 700; third protrusion 710; fourth protrusion 720;

[0034] Mounting seat 810 ; sphere 820 ; tightening member 830 ; threaded rod 840 ; mounting platform 850 ; threaded column 860 ; knob member 870 . DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figures 1 to 4 A bracket with a built-in three-cut seat according to an embodiment of the present invention includes: a rod body 100, a tubular cavity is provided at one end of the rod body 100, a three-cut seat 200 is provided in the tubular cavity, and the three-cut seat 200 has three support leg assemblies 300 distributed around the circumference of its vertical center line and extending out of the tubular cavity. The support leg assembly 300 can be rotated downward relative to the three-cut seat 200 to an expanded state, or rotated upward relative to the three-cut seat 200 to a storage state converged to the outer peripheral wall of the rod body 100.

[0040] The bracket of the above structure is provided with a tubular cavity at the end of the rod body 100, and the three-cut seat 200 is built into the tubular cavity. The support leg assembly 300 on the three-cut seat 200 extends out of the tubular cavity, and the support leg assembly 300 can be rotated downward to an expanded state or rotated upward to a stored state. The way that the three-cut seat 200 is built into the tubular cavity realizes the integrated setting of the three-cut seat 200 and the rod body 100, reduces the material cost, and also reduces the parts used to connect the three-cut seat 200 and the rod body 100, simplifies the production and assembly process, and the three-cut seat 200 does not protrude in the radial direction of the rod body 100, and the support leg assembly 300 adopts an upward folding storage method, so the size of the bracket after folding and storage is small, which is convenient for carrying and transportation.

[0041] See also Figure 1 and Figure 3 In some embodiments of the present invention, the support leg assembly 300 includes a connecting rod 310 rotatably arranged on the outer periphery of the three-cut seat 200, the connecting rod 310 can rotate up and down relative to the three-cut seat 200, the outer peripheral wall of the rod body 100 is provided with a first notch groove 121 connecting the tube cavity and allowing the connecting rod 310 to rotate up and down, and a limit turntable 400 is rotatably arranged at the bottom of the three-cut seat 200. The limit turntable 400 has a second notch groove 410 for the connecting rod 310 to pass through, and the limit turntable 400 can abut against the connecting rod 310 to stabilize the support leg assembly 300 in the expanded state or the stored state.

[0042] Understandably, see Figure 2 When the support leg assembly 300 rotates downward to unfold the bracket, the connecting rod 310 swings downward from the upper end of the first notch slot 121 and leaves the lower end of the first notch slot 121, and then the connecting rod 310 enters the second notch slot 410. When the connecting rod 310 swings downward to a certain angle, the limit dial 400 rotates so that the connecting rod 310 can abut against the lower end of the limit dial 400. Under the gravity of the rod body 100 and the photographic equipment on the rod body 100, the connecting rod 310 remains against the lower end of the limit dial 400, thereby stabilizing the support leg assembly 300 in the above-mentioned unfolded state. Figure 2 and Figure 3 When the support leg assembly 300 rotates upward to fold and store the bracket, the limit dial 400 is first rotated to allow the connecting rod 310 to disengage from the second notch groove 410 upward, and then the connecting rod 310 enters the first notch groove 121. When the connecting rod 310 swings upward until the support leg assembly 300 contacts the outer surface of the rod body 100, the limit dial 400 rotates so that the upper end of the limit dial 400 abuts against the connecting rod 310, thereby stabilizing the support leg assembly 300 in the above-mentioned storage state.

[0043] See also Figure 1 , Figure 2 and Figure 4In some embodiments of the present invention, the outer peripheral wall of the rod body 100 is a cylindrical surface, the limiting turntable 400 includes a bottom plate 401 rotatably arranged on the bottom surface of the three-cut seat 200 and an arc-shaped guide plate 402 arranged on the bottom plate 401 and close to the cylindrical surface, the second notch groove 410 includes a vertical groove 411 opened on the arc-shaped guide plate 402 along the length direction of the rod body 100 and an arc-shaped groove 412 arranged on the bottom plate 401 and connected to the vertical groove 411, and the connecting rod 310 can swing up and down along the vertical groove 411 and rotate around the vertical center line of the three-cut seat 200 along the arc-shaped groove 412.

[0044] Among them, the arc guide plate 402 is consistent with the curvature of the cylindrical surface. It can be understood that when the limit turntable 400 rotates on the three-cut seat 200, the arc guide plate 402 rotates around the cylindrical surface to guide the rotation of the limit turntable 400.

[0045] The directions of the first notch groove 121 and the vertical groove 411 are consistent. When the limit turntable 400 rotates until the vertical groove 411 is aligned with the first notch groove 121, the connecting rod 310 can swing up and down freely. When the connecting rod 310 enters the vertical groove 411 and swings downward to a certain angle, the limit turntable 400 rotates to allow the connecting rod 310 to enter the arc groove 412, thereby limiting the angular position of the support leg assembly 300.

[0046] See also Figure 3 In some embodiments of the present invention, in order to enable the support leg assembly 300 to be tightly attached to the rod body 100 after being folded upward for easy carrying and transportation, the rod body 100 is cylindrical, and the support leg assembly 300 has an arc-shaped plate that matches the outer peripheral wall of the rod body 100. When the support leg assembly 300 is rotated upward, the concave surface of the arc-shaped plate fits the outer peripheral wall of the rod body 100.

[0047] See also Figure 2 In some embodiments of the present invention, the three-cut seat 200 includes an upper connecting seat 210 and a lower connecting seat 220 built into the tubular cavity, a pivot portion 311 is provided at the upper end of the connecting rod 310, the upper connecting seat 210 and the lower connecting seat 220 define a pivot groove for accommodating the pivot portion 311, the upper surface of the bottom plate 401 abuts against the lower surface of the lower connecting seat 220, and the threaded fastener 500 is penetrated through the bottom plate 401, the lower connecting seat 220 and the upper connecting seat 210 along the vertical center line of the three-cut seat 200, and the limit turntable 400 can rotate around the threaded fastener 500.

[0048] Specifically, the upper connecting seat 210 and the lower connecting seat 220 are respectively provided with a semi-cylindrical groove. During assembly, the pivot part 311 is placed in one of the grooves, and then the other groove is aligned with the pivot part 311 and placed to fix the upper connecting seat 210 and the lower connecting seat 220. Moreover, the bottom plate 401, the lower connecting seat 220 and the upper connecting seat 210 can realize the functions of fixing the upper connecting seat 210 and the lower connecting seat 220 and rotating the limiting turntable 400 relative to the three-cutting seat 200 through a threaded fastener 500. The structure is simple, the number of parts is small, and it is easy to produce and assemble.

[0049] In some embodiments of the present invention, in order to quickly and stably install the three-cut seat 200 in the lumen of the rod body 100, the outer wall of the three-cut seat 200 is connected to the inner wall of the lumen through a rotating clamping structure. Of course, in other embodiments, the three-cut seat 200 can also be installed in the lumen by adhesive fixation.

[0050] See also Figure 2 In some embodiments of the present invention, the rotating clamping structure includes a guide groove 610 and a positioning groove 620 which are arranged on the inner wall of the lumen and extend along the length direction of the lumen, the positioning groove 620 is connected with the side of the guide groove 610, the inner wall of the lumen is provided with an anti-slip groove 630 which is connected with the side of the guide groove 610 and is arranged around the circumference of the lumen, the outer wall of the three-cut seat 200 is provided with a first protrusion 221 and a second protrusion 211, the first protrusion 221 and the second protrusion 211 can both move back and forth along the length direction of the guide groove 610, the first protrusion 221 can enter the positioning groove 620 from the guide groove 610 to prevent the three-cut seat 200 from rotating relative to the rod body 100, and at the same time, the second protrusion 211 can enter the anti-slip groove 630 from the guide groove 610 to limit the movement of the three-cut seat 200 along the length direction of the rod body 100.

[0051] When assembling the three-cut seat 200, the first protrusion 221 and the second protrusion 211 are inserted along the guide groove 610. When the three-cut seat 200 is inserted to a preset depth, the three-cut seat 200 and the rod body 100 are driven to rotate relative to each other. The first protrusion 221 enters the positioning groove 620 from the guide groove 610 to limit the rotation of the three-cut seat 200 relative to the rod body 100. At the same time, the second protrusion 211 enters the anti-slip groove 630 from the guide groove 610, thereby preventing the three-cut seat 200 from slipping out along the length direction of the rod body 100, thereby stably installing the three-cut seat 200 inside the lumen.

[0052] Among them, the groove depth of the anti-slip groove 630 is slightly smaller than the groove depth of the guide groove 610, and the groove depth of the anti-slip groove 630 is greater than the groove depth of the positioning groove 620. Correspondingly, the radial protrusion dimension of the second protrusion 211 along the three-cut seat 200 is greater than the radial protrusion dimension of the first protrusion 221 along the three-cut seat 200, thereby ensuring that the second protrusion 211 will not jump out of the positioning groove 620 along the length direction of the rod body 100 when it is located in the anti-slip groove 630.

[0053] See also Figure 2 In some embodiments, in order to avoid radial displacement between the three-cut seat 200 and the rod body 100, further improve the stability of the three-cut seat 200 installed on the rod body 100, and ensure the safety of the photographic equipment, the depth of the positioning groove 620 is less than the depth of the guide groove 610, and the first protrusion 221 can be tightly matched with the bottom of the positioning groove 620.

[0054] When the first protrusion 221 and the second protrusion 211 are located in the guide groove 610, the first protrusion 221 and the second protrusion 211 will not be pressed against the bottom of the guide groove 610, so that the first protrusion 221 and the second protrusion 211 can slide freely in the guide groove 610 to facilitate the insertion of the three-cut seat 200 into the lumen. After the rod body 100 rotates relative to the three-cut seat 200, when the first protrusion 221 enters the positioning groove 620, the first protrusion 221 is tightly matched with the bottom of the positioning groove 620 to prevent the three-cut seat 200 and the rod body 100 from loosening.

[0055] See also Figure 2 In some embodiments of the present invention, the first protrusion 221, the second protrusion 211, the guide groove 610, the positioning groove 620 and the anti-slip groove 630 are all provided in multiple and equal numbers, the multiple first protrusions 221 and the multiple second protrusions 211 are circumferentially distributed on the outer peripheral wall of the three-cut seat 200 around the vertical center line of the three-cut seat 200, the second protrusion 211 corresponds to the first protrusion 221 one by one, and the multiple guide grooves 610 and the multiple positioning grooves 620 are circumferentially distributed on the inner wall of the lumen around the axis of the rod body 100. The above structure is conducive to improving the connection strength between the three-cut seat 200 and the rod body 100.

[0056] See also Figure 5 In some embodiments of the present invention, the rod body 100 includes an inner tube 110 and an outer tube 120 sleeved on the outer tube 110. The inner tube 110 can be telescopically moved along the length direction of the outer tube 120. A telescopic locking structure 700 is provided between the outer tube 120 and the inner tube 110. The inner channel of the outer tube 120 constitutes a lumen. The telescopic function of the rod body 100 is realized by the above structure, thereby achieving the function of adjusting the height position of the photographic equipment on the rod body 100.

[0057] See also Figure 5In some embodiments of the present invention, the telescopic locking structure 700 includes a third protrusion 710 and a fourth protrusion 720 protruding from the outer wall of the inner tube 110. The third protrusion 710 and the fourth protrusion 720 can both move back and forth along the length direction of the guide groove 610. The third protrusion 710 can enter the positioning groove 620 from the guide groove 610 to prevent the inner tube 110 from rotating relative to the outer tube 120. At the same time, the fourth protrusion 720 can enter the anti-slip groove 630 from the guide groove 610 to limit the telescopic movement of the inner tube 110 relative to the outer tube 120.

[0058] The above telescopic locking structure 700 allows the guide groove 610 and the positioning groove 620 to be used for installing the three-cut seat 200 and for telescopically adjusting the length of the rod body 100. There is no need to configure a complex telescopic locking structure 700, which is conducive to simplifying the structure of the bracket. Of course, in other embodiments, the telescopic locking structure 700 can also be replaced by a knob sleeve sleeved on the outside of the inner tube 110 and the outer tube 120. By rotating the knob sleeve, the inner tube 110 and the outer tube 120 can be locked, or the inner tube 110 and the outer tube 120 can be freely telescopically moved. The knob sleeve is a conventional component of the telescopic tube and will not be further described here.

[0059] See also Figure 5 In some embodiments, the inner tube 110 is provided with an arc plate located on the outer surface of the inner tube 110, and the third protrusion 710 and the fourth protrusion 720 are both arranged on the arc plate. It can be understood that the arc plate and the inner circumferential wall of the outer tube 120 are closely attached to each other to play the role of rotation guide and telescopic guide, and the arc plate and the inner tube 110 are arranged separately, which is conducive to the processing and molding of the third protrusion 710 and the fourth protrusion 720, and is convenient for controlling the dimensional accuracy of the third protrusion 710 and the fourth protrusion 720, and reducing the difficulty of production and processing.

[0060] Furthermore, in order to solve the installation problem between the arc plate and the inner tube 110, in some embodiments, a plurality of first clamping grooves are provided in the circumferential direction of the tube wall of the inner tube 110, and a first clamping portion that can be embedded in the first clamping groove is provided on the arc plate. The first clamping portion and the first clamping groove are combined to realize convenient assembly between the arc plate and the inner tube 110.

[0061] In this embodiment, the third protrusion 710, the fourth protrusion 720 and the arc plate are an integral injection molding structure, which further simplifies the processing flow. In other embodiments, the third protrusion 710, the fourth protrusion 720 and the arc plate can also be an integral metal structure.

[0062] See also Figure 1 and Figure 4In some embodiments of the present invention, a mounting seat 810 is provided at the other end of the rod body 100, a spherical cavity is provided in the mounting seat 810, a sphere 820 is movably provided in the spherical cavity, a tightening member 830 is movably passed through the sphere 820 and can extend from the surface of the sphere 820 to tighten against the spherical cavity, and a threaded rod 840 and a mounting platform 850 for the threaded rod 840 to pass through are provided at one end of the tightening member 830 away from the sphere 820.

[0063] It should be noted that the mounting platform 850 is used to carry the photographic device or the projection device, and the threaded rod 840 is used to connect the photographic device or the projection device. When the sphere 820 rotates, the threaded rod 840 and the mounting platform 850 can be adjusted at multiple angles, so that the photographic device or the projection device can tilt at an angle. By driving the tightening member 830 to extend out of the sphere 820, the sphere 820 can be tightened against the inner wall of the spherical cavity, thereby locking the angle position of the threaded rod 840 and the mounting platform 850.

[0064] Specifically, see Figure 4 In this embodiment, a threaded column 860 is provided on the sphere 820, and the external thread of the threaded column 860 is connected to a knob member 870, and the knob member 870 is abutted against the threaded rod 840. When the knob member 870 is rotated, the knob member 870 can push the threaded rod 840 and the tightening member 830 to move toward the sphere 820 as a whole, so that the tightening member 830 extends out of the sphere 820 to tighten against the spherical cavity.

[0065] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bracket with a built-in three-cut seat, characterized in that: include: A rod body (100), wherein a lumen is provided inside the rod body (100) at one end of the rod body (100), wherein a three-cut seat (200) is provided in the lumen, wherein the three-cut seat (200) is provided with three support leg assemblies (300) distributed around the circumference of its vertical center line and extending out of the lumen, wherein the support leg assembly (300) can be rotated downward relative to the three-cut seat (200) to an unfolded state, or rotated upward relative to the three-cut seat (200) to a stored state converged to the outer peripheral wall of the rod body (100), wherein the support leg assembly (300) includes a connecting rod (310) rotatably provided on the outer periphery of the three-cut seat (200), wherein the connecting rod (310) can be rotated up and down relative to the three-cut seat (200), and wherein the outer peripheral wall of the rod body (100) is provided with a first notch groove (121) connected to the lumen and allowing the connecting rod (310) to rotate up and down.

2. A bracket built into a three-cut seat according to claim 1, characterized in that: A limit turntable (400) is rotatably arranged at the bottom of the three-cut seat (200), and the limit turntable (400) has a second notch groove (410) for the connecting rod (310) to pass through, and the limit turntable (400) can abut against the connecting rod (310) to stabilize the support leg assembly (300) in the expanded state or the stored state.

3. A bracket built into a three-cut seat according to claim 2, characterized in that: The outer peripheral wall of the rod body (100) is a cylindrical surface. The limit turntable (400) comprises a bottom plate (401) rotatably arranged on the bottom surface of the three-cut seat (200) and an arc-shaped guide plate (402) arranged on the bottom plate (401) and closely attached to the cylindrical surface. The second notch groove (410) comprises a vertical groove (411) provided on the arc-shaped guide plate (402) along the length direction of the rod body (100) and an arc-shaped groove (412) provided on the bottom plate (401) and connected to the vertical groove (411). The connecting rod (310) can swing up and down along the vertical groove (411) and rotate along the arc-shaped groove (412) around the vertical center line of the three-cut seat (200).

4. A bracket built into a three-cut seat according to claim 3, characterized in that: The three-cut seat (200) includes an upper connecting seat (210) and a lower connecting seat (220) built into the tube cavity, the upper end of the connecting rod (310) is provided with a pivot portion (311), the upper connecting seat (210) and the lower connecting seat (220) define a pivot groove for accommodating the pivot portion (311), the upper surface of the bottom plate (401) abuts against the lower surface of the lower connecting seat (220), the threaded fastener (500) is penetrated by the bottom plate (401), the lower connecting seat (220) and the upper connecting seat (210) along the vertical center line of the three-cut seat (200), and the limit turntable (400) can rotate around the threaded fastener (500).

5. A bracket built into a three-cut seat according to claim 1, characterized in that: The outer wall of the three-cut seat (200) is connected to the inner wall of the tube cavity via a rotating clamping structure.

6. A bracket built into a three-cut seat according to claim 5, characterized in that: The rotating clamping structure includes a guide groove (610) and a positioning groove (620) which are arranged on the inner wall of the tube cavity and extend along the length direction of the tube cavity, the positioning groove (620) is connected with the side of the guide groove (610), the inner wall of the tube cavity is provided with an anti-slip groove (630) which is connected with the side of the guide groove (610) and is arranged around the circumference of the tube cavity, and the outer wall of the three-cut seat (200) is provided with a first protrusion (221) and a second protrusion (211), the first protrusion (2 21) and the second protrusion (211) can both reciprocate along the length direction of the guide groove (610), the first protrusion (221) can enter the positioning groove (620) from the guide groove (610) to prevent the three-cut seat (200) from rotating relative to the rod body (100), and at the same time, the second protrusion (211) can enter the anti-slip groove (630) from the guide groove (610) to limit the movement of the three-cut seat (200) along the length direction of the rod body (100).

7. A bracket built into a three-cut seat according to claim 6, characterized in that: The first protrusion (221), the second protrusion (211), the guide groove (610), the positioning groove (620) and the anti-slip groove (630) are all provided in multiple and equal quantities. The multiple first protrusions (221) and the multiple second protrusions (211) are distributed on the outer peripheral wall of the three-cut seat (200) around the vertical center line of the three-cut seat (200). The second protrusion (211) corresponds to the first protrusion (221) one by one. The multiple guide grooves (610) and the multiple positioning grooves (620) are distributed on the inner wall of the tubular cavity around the axis of the rod body (100).

8. The bracket built into the three-cut seat according to claim 6, characterized in that: The rod body (100) comprises an inner tube (110) and an outer tube (120) sleeved on the outside of the inner tube (110); the inner tube (110) can be telescopically moved along the length direction of the outer tube (120); a telescopic locking structure (700) is provided between the outer tube (120) and the inner tube (110); and the internal channel of the outer tube (120) constitutes the lumen.

9. A bracket built into a three-cut seat according to claim 8, characterized in that: The telescopic locking structure (700) comprises a third protrusion (710) and a fourth protrusion (720) protruding from the outer wall of the inner tube (110); the third protrusion (710) and the fourth protrusion (720) are both capable of reciprocating along the length direction of the guide groove (610); the third protrusion (710) is capable of entering the positioning groove (620) from the guide groove (610) to prevent the inner tube (110) from rotating relative to the outer tube (120); and at the same time, the fourth protrusion (720) is capable of entering the anti-slip groove (630) from the guide groove (610) to limit the telescopic movement of the inner tube (110) relative to the outer tube (120).

10. A bracket built into a three-cut seat according to claim 1, characterized in that: The other end of the rod body (100) is provided with a mounting seat (810), a spherical cavity is provided in the mounting seat (810), a spherical body (820) is movably provided in the spherical cavity, a pressing member (830) is movably passed through the spherical body (820) and can extend from the surface of the spherical body (820) to press against the spherical cavity, and a threaded rod (840) and a mounting platform (850) for the threaded rod (840) to pass through are provided at one end of the pressing member (830) away from the spherical body (820).

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