A tripod

Abstract

The application discloses a tripod, comprising: coaxial first connecting rod, second connecting rod, slide rod; winding shaft, arranged on the first connecting rod; first locking assembly, sleeved on the bottom end of the first connecting rod, comprising a first locking part and a first connecting sleeve, the first locking part is embedded in the inner wall of the bottom end of the first connecting sleeve; used for fixing the first connecting rod and the second connecting rod. Second locking assembly, sleeved on the bottom end of the second connecting rod, comprising a second locking part and a second connecting sleeve, the second locking part is embedded in the inner wall of the bottom end of the second connecting sleeve; used for fixing the second connecting rod and the slide rod. First transmission assembly, arranged above the first locking assembly, used for controlling the first locking part to lock or release the second connecting rod; second transmission assembly, arranged above the second locking assembly, used for controlling the second locking part to lock or release the slide rod. The device is convenient to operate, and the complexity of locking operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of photographic auxiliary equipment technology, and more particularly to a tripod. Background Technology

[0002] Tripods have become an indispensable item in the field of camera photography. Nowadays, most tripods on the market have a multi-section locking structure. The multi-section locking structure requires manual extension and retraction of the tripod legs one section at a time through the tightening and loosening device, which is relatively troublesome to use. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a tripod that is easy to operate and can lock the single leg with one click.

[0004] The present invention provides a tripod comprising:

[0005] The device consists of three single-legged components, each including a hollow first connecting rod, with a hollow second connecting rod coaxially fitted at the bottom end of the first connecting rod; the bottom end of the second connecting rod is provided with a retractable sliding rod.

[0006] A spool is mounted on the first connecting rod;

[0007] A first locking assembly is sleeved on the bottom end of the first connecting rod, including a first locking part and a first connecting sleeve, wherein the first locking part is embedded in the inner wall of the bottom end of the first connecting sleeve;

[0008] The first locking part can slide upward along the inner wall of the first connecting sleeve, and at the same time move towards the side wall of the second connecting rod;

[0009] The first locking part can slide downward along the inner wall of the first connecting sleeve, and at the same time move away from the side wall of the second connecting rod;

[0010] The second locking assembly is sleeved on the bottom end of the second connecting rod and includes a second locking part and a second connecting sleeve. The second locking part is embedded in the inner wall of the bottom end of the second connecting sleeve.

[0011] The second locking part can slide upward along the inner wall of the second connecting sleeve, and at the same time move towards the side wall of the slide rod;

[0012] The second locking part can slide downward along the inner wall of the second connecting sleeve, and at the same time move away from the side wall of the slide rod;

[0013] A first transmission assembly is disposed above a first locking assembly and includes a first connecting rope. One end of the first connecting rope is wound around the winding shaft, and the other end is connected to the first locking part via a first transmission part, for controlling the first locking part to lock or release the side wall of the second connecting rod.

[0014] The second transmission assembly is disposed above the second locking assembly and includes a second connecting rope. One end of the second connecting rope is connected to the second transmission part and the other end is connected to the second locking part, which is used to control the second locking part to lock or release the slide rod sidewall.

[0015] The first transmission unit drives the second transmission unit to rise or fall.

[0016] The first transmission unit includes a movable pulley and a fixed pulley, with the fixed pulley located above the movable pulley;

[0017] The fixed pulley is rotatably connected to the first fixed shaft, and the first fixed shaft is fixedly connected to the second connecting rod through a connecting assembly;

[0018] The movable pulley is rotatably connected to the second fixed shaft, and the second fixed shaft is fixedly connected to the second transmission part;

[0019] The first connecting rope passes through the movable pulley and the fixed pulley in sequence and is then fixedly connected to the first locking part.

[0020] Optionally, the first locking part includes a first locking slider and a first connecting post; a first sliding groove is provided on the inner wall of the bottom end of the first connecting sleeve, and the first locking slider is slidably embedded in the first sliding groove;

[0021] The side wall of the first locking slider near the first connecting rod is provided with an arc surface that follows the shape of the side wall of the first connecting rod, and the side wall away from the side wall of the first connecting rod is provided with a first wedge-shaped surface that slopes from bottom to top and towards the side wall of the first connecting rod.

[0022] The first groove is provided with a second wedge surface that cooperates with the first wedge surface;

[0023] The first connecting rope is fixedly connected to the first locking part through the first connecting post.

[0024] Furthermore, a spring is provided between the top of the first locking slider and the top of the first slide groove.

[0025] Optionally, the second locking part includes a second locking slider and a second connecting post; a second sliding groove is provided on the inner wall of the bottom end of the second connecting sleeve, and the second locking slider is slidably embedded in the second sliding groove;

[0026] The second locking slider has an arc surface that conforms to the side wall of the second connecting rod on the side wall of the second locking slider, and a third wedge-shaped surface that slopes from bottom to top and toward the side wall of the second connecting rod on the side away from the side wall of the second locking slider.

[0027] The second groove is provided with a fourth wedge-shaped surface that cooperates with the third wedge-shaped surface;

[0028] The second connecting rope is fixedly connected to the second locking part through the second connecting post.

[0029] Furthermore, a spring is provided between the top end of the second locking part and the top end of the second slide groove.

[0030] Furthermore, the second transmission part includes a connecting slider disposed below the fixed pulley. The connecting slider is slidably connected to the connecting assembly, and the second fixed shaft is fixedly connected to its side wall. At the same time, the second connecting rope is fixedly connected to its bottom end.

[0031] Optionally, the connecting slider is U-shaped, and the movable pulley is disposed between the vertical sidewalls of the U-shaped connecting slider; the second fixed shaft is rotatably connected to the vertical sidewall of the U-shaped connecting slider.

[0032] Furthermore, the connecting assembly includes two opposing semi-cylindrical connecting seats, which are fully fitted along the planar sidewalls, with one end fixedly inserted into the top of the second connecting rod and the other end fixedly connected to the first connecting rod.

[0033] The first fixed shaft and the second fixed shaft are disposed between the two connecting seats;

[0034] A third groove that mates with the connecting slider is provided on the planar sidewall of the connecting seat;

[0035] A spring is provided between the top of the connecting slider and the top of the third slide groove.

[0036] Optionally, the one-button locking single-leg device further includes a handle disposed on the outer side of the top end of the first connecting rod, the handle being used to control the winding spool to rotate clockwise / counterclockwise.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] A tripod according to the present invention includes: a first connecting rod, a second connecting rod, a sliding rod, a winding spool, a first locking part, a first connecting sleeve, a second locking part, a second connecting sleeve, a first transmission part, a second transmission part, a first connecting rope, and a second connecting rope. The inner wall of the first connecting sleeve is stepped along the axial direction (Y). The side wall of the end with the larger inner diameter of the first connecting sleeve is open along the axial direction (Y), and locking flat parts are provided on both sides of the opening, with mounting holes provided on the locking flat parts. The second connecting rod passes through the first connecting sleeve along the axial direction (Y) and extends into the first connecting rod from its bottom end. The end of the first connecting sleeve with the larger inner diameter is fitted onto the bottom of the first connecting rod. A bolt is passed through the mounting hole of the locking flat part, and the first connecting sleeve and the first connecting rod are fixedly connected by adjusting the tightness of the bolt.

[0039] The end with the smaller inner diameter has a clearance fit with the second connecting rod.

[0040] The first locking part is slidably embedded at the smaller end of the inner diameter of the first connecting sleeve and located below the opening. It has a clearance fit with the second connecting rod. In addition, it can slide along the inner wall of the first connecting sleeve toward its top and move toward the side wall of the second connecting rod at the same time, so that the fit with the second connecting rod becomes an interference fit, thereby realizing the locking between the second connecting rod and the first connecting rod.

[0041] In addition, the first locking part can slide downward along the inner wall of the first connecting sleeve and move away from the side wall of the second link at the same time, so that the fit between it and the second link changes from an interference fit to a clearance fit, thereby realizing the release between the second link and the first link.

[0042] The inner wall of the second connecting sleeve is stepped along the axial direction (Y). The side wall of the end with the larger inner diameter of the second connecting sleeve is open along the axial direction (Y), and locking flat parts are provided on both sides of the opening, and mounting holes are provided on the locking flat parts.

[0043] In addition, the slide rod passes through the second connecting sleeve along the axial direction (Y) of the second connecting sleeve and extends into the second connecting rod from the bottom end of the second connecting rod. The end of the second connecting sleeve with the larger inner diameter is sleeved on the bottom of the second connecting rod. The bolt is passed through the mounting hole of the locking flat position, and the second connecting sleeve and the second connecting rod are fixedly connected by adjusting the tightness of the bolt.

[0044] The end with the smaller inner diameter has a clearance fit with the slide rod.

[0045] The second locking part is slidably embedded at the smaller end of the inner diameter of the second connecting sleeve and located below the opening. It has a clearance fit with the slide rod. In addition, it can slide upward along the inner wall of the second connecting sleeve and move towards the side wall of the slide rod at the same time, so that the fit between it and the slide rod becomes an interference fit, thereby realizing the locking between the slide rod and the second connecting rod.

[0046] In addition, the second locking part can slide downward along the inner wall of the second connecting sleeve, and at the same time move away from the side wall of the slide rod, so that the fit between it and the slide rod changes from an interference fit to a clearance fit, thereby realizing the release between the slide rod and the second connecting rod.

[0047] The first transmission assembly is disposed above the first locking assembly and includes a first connecting rope; wherein, one end of the first connecting rope passes through the wire hole of the winding spool and is knotted and fixed, and is wound on the winding spool, and the other end passes through the first transmission part and is fixedly connected to the first locking part, for controlling the first locking part to lock or loosen the side wall of the second connecting rod.

[0048] The second transmission assembly is located above the second locking assembly and not higher than the first transmission assembly. It includes a second connecting rope, one end of which is fixedly connected to the second transmission part and the other end is connected to the second locking part. It is used to control the second locking part to lock or release the slide bar side wall.

[0049] The first transmission unit drives the second transmission unit to rise or fall.

[0050] The device is easy to operate, enabling one-time locking of a tripod when locking a single leg, reducing the complexity of the locking operation.

[0051] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0052] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0053] Figure 1 This is a schematic diagram of the overall structure of the tripod;

[0054] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the single-legged structure;

[0055] Figure 3 An exploded view of the components of the one-legged section;

[0056] Figure 4 This is a magnified view of a portion of point A.

[0057] Figure 5 This is a magnified view of a portion of point B.

[0058] Figure 6 This is a structural schematic diagram of the transmission assembly and the connecting assembly;

[0059] Figure 7 This is a magnified view of a portion of point C.

[0060] The following are the labels in the diagram: 1. Single leg; 2. Reel; 3. First locking assembly; 4. Second locking assembly; 5. First transmission assembly; 6. Second transmission assembly; 7. Connecting assembly; 8. Handle; 9. Torsion spring;

[0061] 11. First link; 12. Second link; 13. Sliding rod;

[0062] 31. First locking part; 32. First connecting sleeve;

[0063] 41. Second locking part; 42. Second connecting sleeve;

[0064] 51. First connecting rope; 52. First transmission unit;

[0065] 61. Second connecting rope; 62. Second transmission unit;

[0066] 71. Connecting seat; 72. Third slide groove;

[0067] 311. First locking slider; 312. First connecting post; 313. First slide groove; 314. First wedge-shaped surface; 315. Second wedge-shaped surface;

[0068] 411. Second locking slider; 412. Second connecting post; 413. Second slide groove; 414. Third wedge surface; 415. Fourth wedge surface;

[0069] 521. Movable pulley; 522. Fixed pulley; 523. First fixed shaft; 524. Second fixed shaft

[0070] 621. Connect the slider. Detailed Implementation

[0071] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0072] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0073] Please refer to Figure 1 , Figure 2 and Figure 3An embodiment of the present invention provides a tripod, comprising: three single legs 1, which are closed relative to each other, with their top ends rotatably connected to a base. A pivot is provided circumferentially around the base corresponding to the top end of each single leg, rotatably engaging the top end of each single leg with the pivot to adjust the opening angle between the three single legs 1. Each single leg 1 includes a hollow first connecting rod 11, with a hollow second connecting rod 12 coaxially fitted at the bottom end of the first connecting rod 11; the bottom end of the second connecting rod 12 is provided with a retractable sliding rod 13.

[0074] The winding spool 2 has a wire-passing hole in the radial direction, and a rotating shaft is fixedly inserted at each end of the spool. The other end of the rotating shaft passes through the side wall of the first connecting rod 11 and is rotatably connected to the first connecting rod 11.

[0075] The first locking assembly 3 includes a first locking part 31 and an annular first connecting sleeve 32. The inner wall of the first connecting sleeve 32 is stepped along the axial direction (Y). The side wall of the end with the larger inner diameter of the first connecting sleeve 32 is open along the axial direction (Y), and locking flat parts are provided on both sides of the opening. Mounting holes are provided on the locking flat parts.

[0076] In addition, the second connecting rod 12 passes through the first connecting sleeve 32 along the axial direction (Y) of the first connecting sleeve 32 and extends into the first connecting rod 11 from the bottom end of the first connecting rod 11. The larger inner diameter end of the first connecting sleeve 32 is sleeved on the bottom of the first connecting rod 11. The bolt is passed through the mounting hole of the locking flat position, and the first connecting sleeve 32 and the first connecting rod 11 are fixedly connected by the bolt.

[0077] The end with the smaller inner diameter has a clearance fit with the second connecting rod 12.

[0078] The first locking part 31 is slidably embedded in the smaller end of the inner diameter of the first connecting sleeve 32 and located below the opening. It has a clearance fit with the second connecting rod 12. In addition, it can slide along the inner wall of the first connecting sleeve 32 toward its top and move toward the side wall of the second connecting rod 12 at the same time, so that the fit with the second connecting rod 12 becomes an interference fit, thereby realizing the locking between the second connecting rod 12 and the first connecting rod 11.

[0079] In addition, the first locking part 31 can slide downward along the inner wall of the first connecting sleeve 32, and at the same time move away from the side wall of the second connecting rod 12, so that the fit between it and the second connecting rod 12 changes from an interference fit to a clearance fit, thereby realizing the release between the second connecting rod 12 and the first connecting rod 11.

[0080] The second locking assembly 4 includes a second locking part 41 and an annular second connecting sleeve 42. The inner wall of the second connecting sleeve 42 is stepped along the axial direction (Y). The side wall of the end with the larger inner diameter of the second connecting sleeve 42 is open along the axial direction (Y), and locking flat parts are provided on both sides of the opening. Mounting holes are provided on the locking flat parts.

[0081] In addition, the slide rod 13 passes through the second connecting sleeve 42 along the axial direction (Y) of the second connecting sleeve 42 and extends into the second connecting rod 12 from the bottom end of the second connecting rod 12. The end of the second connecting sleeve 42 with the larger inner diameter is sleeved on the bottom of the second connecting rod 12. The bolt is passed through the mounting hole of the locking flat position, and the second connecting sleeve 42 and the second connecting rod 12 are fixedly connected by adjusting the tightness of the bolt.

[0082] The end with the smaller inner diameter has a clearance fit with the slide rod 13.

[0083] The second locking part 41 is slidably embedded in the smaller end of the inner diameter of the second connecting sleeve 42 and located below the opening. It has a clearance fit with the slide rod 13. In addition, it can slide upward along the inner wall of the second connecting sleeve 42 and move towards the side wall of the slide rod 13 at the same time, so that the fit between it and the slide rod 13 becomes an interference fit, thereby realizing the locking between the slide rod 13 and the second connecting rod 12.

[0084] In addition, the second locking part 41 can slide downward along the inner wall of the second connecting sleeve 42, and at the same time move away from the side wall of the slide rod 13, so that the fit between it and the slide rod 13 changes from an interference fit to a clearance fit, thereby realizing the release between the slide rod 13 and the second connecting rod 12.

[0085] The first transmission component 5 is disposed above the first locking component 3 and includes a first connecting rope 51. One end of the first connecting rope 51 passes through the wire hole of the winding shaft 2 and is knotted and fixed, and is wound around the winding shaft 2. The other end passes through the first transmission part 52 and the opening of the side wall of the first connecting seat 71 and is fixedly connected to the first locking part 31, which is used to control the first locking part 31 to lock or release the side wall of the second connecting rod 12.

[0086] The second transmission assembly 6 is located above the second locking assembly 4 and not higher than the first transmission assembly 5. It includes a second connecting rope 61. One end of the second connecting rope 61 is fixedly connected to the second transmission part 62, and the other end is connected to the second locking part 41 after passing through the opening of the side wall of the second connecting seat 71. It is used to control the second locking part 41 to lock or release the side wall of the slide rod 13.

[0087] The first transmission unit 52 drives the second transmission unit 62 to rise or fall.

[0088] In this embodiment, when locking the single leg 1 of the tripod, after rotating the shaft in the forward direction, the shaft drives the winding shaft 2 to rotate. Since the first connecting rope 51 is wound on the winding shaft 2 and gradually shortens, it further drives the first locking part 31 to slide upward along the axial direction (Y) of the first connecting sleeve 32 through the first transmission part 52, while also moving closer to the axis of the second connecting rod 12, so that the first locking part 31 and the second connecting rod 12 change from a clearance fit to an interference fit, thereby fixing the first connecting rod 11, the first connecting sleeve 32, and the second connecting rod 12.

[0089] Meanwhile, since the first transmission part 52 can drive the second transmission part 62 to move up and down, when the first transmission part 52 drives the second transmission part 62 to move upward, it further drives the second locking part 41 to slide upward along the axial direction (Y) of the second connecting sleeve 42, and at the same time moves closer to the axis of the slide rod 13, so that the second locking part 41 and the slide rod 13 change from a clearance fit to an interference fit, thereby fixing the second connecting rod 12, the second connecting sleeve 42, and the slide rod 13. When unlocking the single leg 1 with one key, simply rotate the shaft in the opposite direction.

[0090] The aforementioned forward rotation is clockwise rotation, and the reverse rotation is counterclockwise rotation.

[0091] The device is easy to operate, enabling one-time locking of the tripod's single leg 1, reducing the complexity of the locking operation.

[0092] like Figure 2 , Figure 3 and Figure 4 As shown, in one optional implementation, the first locking part 31 includes a first locking slider 311 and a first connecting post 312; a first groove 313 is provided on the inner wall of the end with the smaller inner diameter of the first connecting sleeve 32, wherein the first locking slider 311 is slidably embedded in the first groove 313, and the first locking slider 311 slides only along the axial direction (Y) of the first groove 313;

[0093] The first locking slider 311 has an arc surface that conforms to the shape of the first connecting rod 11 on one side wall, and a first wedge-shaped surface 314 that is inclined from bottom to top and closer to the first connecting rod 11 on the other side wall. At the same time, the first groove 313 has a second wedge-shaped surface 315 that cooperates with the first wedge-shaped surface 314.

[0094] In addition, a return spring is provided between the top of the first locking slider 311 and the top of the first slide groove 313. When the locking device is released, the first locking slider 311 will rebound due to the action of the spring, so that the first locking slider 311 returns to the state before the tripod single leg 1 is locked.

[0095] In a specific implementation, the first connecting rope 51 passes through the through hole at the top of the first connecting post 312 and is then knotted and fixed. Furthermore, the first locking slider 311 has a stepped through hole in the axial direction (Y). After the first connecting post 312 is inserted into the stepped through hole, the first connecting post 312 and the first locking slider 311 are fixed together with bolts.

[0096] When the first connecting rope 51 pulls the first connecting post 312 and the first locking slider 311 upward, the first locking slider 311 is displaced through the first sliding groove 313 and the first connecting sleeve 32. At this time, while the first locking slider 311 slides upward along the second wedge surface 315 through the first wedge surface 314, it generates a displacement close to the axis of the second connecting rod 12, so that the first locking slider 311 and the second connecting rod 12 change from clearance fit to interference fit, thereby fixing the first connecting rod 11, the first connecting sleeve 32 and the second connecting rod 12.

[0097] like Figure 2 , Figure 3 and Figure 5 As shown, in one optional embodiment, the second locking part 41 includes a second locking slider 411 and a second connecting post 412; a second sliding groove 413 is provided on the inner wall of the end with the smaller inner diameter of the second connecting sleeve 42, wherein the second locking slider 411 is slidably embedded in the second sliding groove 413, and the second locking slider 411 slides only along the axial direction (Y) of the second sliding groove 413;

[0098] The second locking slider 411 has an arc surface that conforms to the side wall of the second connecting rod 12 on one side wall. The side away from the side wall of the second connecting rod 12 has a third wedge-shaped surface 414 that is inclined from bottom to top and toward the side wall of the second connecting rod 12. At the same time, the second slide groove 413 has a fourth wedge-shaped surface 415 that cooperates with the third wedge-shaped surface 414.

[0099] In addition, a return spring is provided between the top of the second locking slider 411 and the top of the second slide groove 413. When the locking device is released, the second locking slider 411 will rebound due to the action of the spring, so that the second locking slider 411 returns to the state before the tripod single leg 1 is locked.

[0100] In a specific implementation, the second connecting rope 61 passes through the through hole at the top of the second connecting post 412 and is then knotted and fixed. Furthermore, the second locking slider 411 has a stepped through hole in the axial direction (Y). After the second connecting post 412 is inserted into the stepped through hole, the second connecting post 412 and the second locking slider 411 are fixed together with bolts.

[0101] When the second connecting rope 61 pulls the second connecting post 412 and the second locking slider 411 upward, the second locking slider 411 slides relative to the second connecting sleeve 42 through the second sliding groove 413. At this time, while the second locking slider 411 slides upward along the fourth wedge surface 415 through the third wedge surface 414, it generates a displacement close to the axis of the slide rod 13, so that the second locking slider 411 and the slide rod 13 change from a clearance fit to an interference fit, thereby fixing the second connecting rod 12, the second connecting sleeve 42, and the slide rod 13.

[0102] like Figure 2 , Figure 3 and Figure 6 As shown, in one optional implementation, the first transmission unit 52 includes a movable pulley 521 and a fixed pulley 522, with the fixed pulley 522 located above the movable pulley 521;

[0103] The second transmission unit 62 includes a connecting slider 621 disposed below the fixed pulley 522. The connecting slider 621 is slidably connected to the connecting assembly 7, and a second fixed shaft 524 is fixedly connected to its side wall. At the same time, a second connecting rope 61 is fixedly connected to its bottom end.

[0104] Among them, the fixed pulley 522 is rotatably connected to the first fixed shaft 523, and the first fixed shaft 523 is fixedly connected to the second connecting rod 12 through the connecting assembly 7;

[0105] The connecting component 7 includes two semi-cylindrical connecting seats 71 arranged opposite each other. The two connecting seats 71 are completely attached to the side wall of the plane. One end of the connecting seat 71 is fixedly inserted into the top of the second connecting rod 12, and the other end is fixedly connected to the first connecting rod 11.

[0106] The first fixed shaft 523 and the second fixed shaft 524 are disposed between the two connecting seats 71. At the same time, the first fixed shaft 523 is fixedly connected to the connecting seat 71, and the second fixed shaft 524 is fixedly connected to the connecting slider 621.

[0107] A third slide groove 72 is provided on the flat side wall of the connecting seat 71 to cooperate with the connecting slider 621. At the same time, a return spring is provided between the top of the connecting slider 621 and the top of the third slide groove 72, so that when the locking device is released, the connecting slider 621 can return to its original position due to the action of the spring, so that the connecting slider 621 returns to the state before the tripod is locked.

[0108] The connecting slider 621 is U-shaped, and the movable pulley 521 is disposed between the vertical sidewalls of the U-shaped connecting slider 621; the second fixed shaft 524 is rotatably connected to the vertical sidewall of the U-shaped connecting slider 621.

[0109] The first connecting rope 51 passes through the movable pulley 521 and the fixed pulley 522 in sequence and is then fixedly connected to the first locking part 31.

[0110] One end of the second connecting rope 61 is fixedly connected to the connecting slider 621, and the other end is fixedly connected to the second locking part 41.

[0111] In a specific implementation, on the one hand, the movable pulley 521 is placed in the opening of the U-shaped connecting slider 621, and then the second fixed shaft 524 passes through the vertical side wall of the U-shaped connecting slider 621 and the movable pulley 521 in sequence. At this time, the movable pulley 521 rotates on the second fixed shaft 524, and the second fixed shaft 524 is fixedly connected to the U-shaped connecting slider 621.

[0112] Furthermore, the vertical sidewall of the assembled U-shaped connecting slider 621 is embedded into the third groove 72 of the semi-cylindrical connecting seat 71, wherein the U-shaped connecting slider 621 is located between the two semi-cylindrical connecting seats 71 and can slide along the axial (Y) direction of the third groove 72.

[0113] Meanwhile, the first fixed shaft 523 rotates and is fixedly connected to the semi-cylindrical connecting seat 71 after being sleeved on the fixed pulley 522. The fixed pulley 522 is located between the two semi-cylindrical connecting seats 71 and above the movable pulley 521.

[0114] After one end of the first connecting rope 51 is fixedly connected to the winding shaft 2, the other end passes through the movable pulley 521 and the fixed pulley 522 in sequence and is then connected to the first locking part 31.

[0115] On the other hand, one end of the second connecting rope 61 is fixedly connected to the bottom end of the U-shaped connecting slider 621, and the other end is connected to the second locking part 41.

[0116] In summary, when locking the tripod's single leg 1, rotating the pivot shaft causes the winding shaft 2 to rotate, continuing to wind the first connecting rope 51. This, in turn, causes the movable pulley 521 to move the U-shaped connecting slider 621 upward along the first connecting rod 11, simultaneously moving the second connecting rope 61 and the second locking part 41 upward. At the same time, the other end of the first connecting rope 51 moves the first locking part 31 upward via the fixed pulley 522. As the first locking part 31 and the second locking part 41 move upward respectively, they also move towards the axes of the second connecting rod 12 and the slide rod 13, respectively, thus realizing the one-button locking function of the tripod.

[0117] like Figure 3 As shown, in an optional embodiment, the device further includes a handle 8 disposed on the outer side of the top end of the first connecting rod 11. The handle 8 is fixedly connected to one end of the rotating shaft and is used to control the clockwise / counterclockwise rotation of the winding spool 2. A torsion spring 9 is mounted on the winding spool 2.

[0118] In a specific implementation, the handle 8 is fixedly connected to the rotating shaft. When the handle 8 is rotated, the rotating shaft drives the winding shaft 2 to rotate synchronously, thereby realizing the winding and unwinding of the first connecting rope 51.

[0119] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0120] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0121] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tripod, characterized in that, include: Three single legs (1), each single leg (1) includes a hollow first connecting rod (11), and a hollow second connecting rod (12) is coaxially sleeved at the bottom end of the first connecting rod (11); the bottom end of the second connecting rod (12) is provided with a retractable sliding rod (13). A spool (2) is mounted on the first connecting rod (11); The first locking assembly (3) is sleeved on the bottom end of the first connecting rod (11) and includes a first locking part (31) and a first connecting sleeve (32). The first locking part (31) is embedded in the inner wall of the bottom end of the first connecting sleeve (32). The first locking part (31) can slide upward along the inner wall of the first connecting sleeve (32) and at the same time move towards the side wall of the second connecting rod (12); The first locking part (31) can slide downward along the inner wall of the first connecting sleeve (32) and at the same time move away from the side wall of the second connecting rod (12); The second locking assembly (4) is sleeved on the bottom end of the second connecting rod (12) and includes a second locking part (41) and a second connecting sleeve (42). The second locking part (41) is embedded in the inner wall of the bottom end of the second connecting sleeve (42). The second locking part (41) can slide upward along the inner wall of the second connecting sleeve (42) and at the same time move towards the side wall of the slide rod (13); The second locking part (41) can slide downward along the inner wall of the second connecting sleeve (42) and at the same time move away from the side wall of the slide rod (13); The first transmission assembly (5) is disposed above the first locking assembly (3) and includes a first connecting rope (51). One end of the first connecting rope (51) is wound around the winding shaft (2), and the other end is connected to the first locking part (31) via the first transmission part (52) for controlling the first locking part (31) to lock or release the side wall of the second connecting rod (12). The second transmission assembly (6) is disposed above the second locking assembly (4) and includes a second connecting rope (61). One end of the second connecting rope (61) is connected to the second transmission part (62), and the other end is connected to the second locking part (41). It is used to control the second locking part (41) to lock or release the side wall of the slide rod (13). The first transmission unit (52) drives the second transmission unit (62) to rise or fall. The first transmission unit (52) includes a movable pulley (521) and a fixed pulley (522), wherein the fixed pulley (522) is located above the movable pulley (521); The fixed pulley (522) is rotatably connected to the first fixed shaft (523), and the first fixed shaft (523) is fixedly connected to the second connecting rod (12) through the connecting assembly (7); The movable pulley (521) is rotatably connected to the second fixed shaft (524), and the second fixed shaft (524) is fixedly connected to the second transmission part (62); The first connecting rope (51) passes through the movable pulley (521) and the fixed pulley (522) in sequence and is then fixedly connected to the first locking part (31).

2. The tripod according to claim 1, characterized in that, The first locking part (31) includes a first locking slider (311) and a first connecting post (312); a first groove (313) is provided on the inner wall of the bottom end of the first connecting sleeve (32), and the first locking slider (311) is slidably embedded in the first groove (313); The first locking slider (311) has an arc surface that conforms to the shape of the first connecting rod (11) on one side wall, and a first wedge-shaped surface (314) that is inclined from bottom to top and closer to the first connecting rod (11) on the other side wall. The first groove (313) is provided with a second wedge-shaped surface (315) that cooperates with the first wedge-shaped surface (314); The first connecting rope (51) is fixedly connected to the first locking part (31) through the first connecting post (312).

3. The tripod according to claim 2, characterized in that, A spring is provided between the top of the first locking slider (311) and the top of the first slide groove (313).

4. The tripod according to claim 1, characterized in that, The second locking part (41) includes a second locking slider (411) and a second connecting post (412); a second sliding groove (413) is provided on the inner wall of the bottom end of the second connecting sleeve (42), and the second locking slider (411) is slidably embedded in the second sliding groove (413); The second locking slider (411) has an arc surface that conforms to the side wall of the second connecting rod (12) on one side wall, and a third wedge-shaped surface (414) that is inclined from bottom to top and toward the side wall of the second connecting rod (12) on the side away from the side wall of the second connecting rod (12). The second groove (413) is provided with a fourth wedge-shaped surface (415) that cooperates with the third wedge-shaped surface (414); The second connecting rope (61) is fixedly connected to the second locking part (41) via the second connecting post (412).

5. The tripod according to claim 4, characterized in that, A spring is provided between the top end of the second locking part (41) and the top end of the second slide groove (413).

6. The tripod according to claim 1, characterized in that, The second transmission part (62) includes a connecting slider (621) disposed below the fixed pulley (522). The connecting slider (621) is slidably connected to the connecting assembly (7), and the second fixed shaft (524) is fixedly connected to its side wall. At the same time, the second connecting rope (61) is fixedly connected to its bottom end.

7. The tripod according to claim 6, characterized in that, The connecting slider (621) is U-shaped, and the movable pulley (521) is disposed between the vertical sidewalls of the U-shaped connecting slider (621); the second fixed shaft (524) is rotatably connected to the vertical sidewall of the U-shaped connecting slider (621).

8. The tripod according to claim 6, characterized in that, The connecting assembly (7) includes two opposing semi-cylindrical connecting seats (71), which are fully fitted along the planar sidewalls. One end of each seat is fixedly inserted into the top of the second connecting rod (12), and the other end is fixedly connected to the first connecting rod (11). The first fixed shaft (523) and the second fixed shaft (524) are disposed between the two connecting seats (71); The connecting seat (71) has a third groove (72) on its planar sidewall that cooperates with the connecting slider (621); A spring is provided between the top end of the connecting slider (621) and the top end of the third groove (72).

9. The tripod according to claim 1, characterized in that, The one-button locking single-leg (1) device also includes a handle (8) disposed on the outer side of the top of the first connecting rod (11), the handle (8) being used to control the winding spool (2) to rotate clockwise / counterclockwise.

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