Support leg with one-button operation and support stand

Abstract

A support leg with one-button operation, comprising a first leg section (1), a second leg section (2), and a third leg section (3); wherein, in the longitudinal direction of the support leg, the second leg section (2) can slide relative to the first leg section (1), and the third leg section (3) can slide relative to the second leg section (2); wherein an active locking mechanism is arranged between the first leg section (1) and the second leg section (2) for locking or unlocking the two, and a driven locking mechanism is arranged between the second leg section (2) and the third leg section (3) for locking or unlocking the two; characterized in that it further comprises a coupling mechanism (6) between the active locking mechanism and the driven locking mechanism;wherein the active locking mechanism drives the driven locking mechanism to movement via the coupling mechanism (6), so that the driven locking mechanism and the active locking mechanism are simultaneously in a locked state or an unlocked state.

Description

Technical area

[0001] The present utility model relates to the technical field of photographic cameras and, in particular, to a support leg with one-button operation and a support tripod. Background technology

[0002] In daily life, it is often necessary to use tripods and other devices to support cameras and other photographic equipment. A tripod includes multiple support legs, and each support leg has a telescopic structure to adjust the height of the tripod. This telescopic support leg usually consists of three sections of support rods. A set of locking mechanisms is provided between the first section and the second section, and between the second section and the third section. Each set of locking mechanisms has an independent lock / unlock switch, and both sets of lock / unlock switches must be turned on to extend all the support rods on the support leg. If you want to unfold the entire support tripod, you need to open six lock / unlock switches, which is extremely inconvenient to operate. Content of the utility model

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, namely that the height adjustment of the support legs is cumbersome and the adjustment speed is slow, and thereby to provide a support leg with one-button operation and a support stand.

[0004] In order to solve the above-mentioned technical problems, the technical solution of the present utility model is as follows: A support leg with one-button operation, comprising a first leg portion, a second leg portion, and a third leg portion; wherein, in the longitudinal direction of the support leg, the second leg portion can slide relative to the first leg portion and the third leg portion can slide relative to the second leg portion; wherein an active locking mechanism is arranged between the first leg portion and the second leg portion for locking or unlocking the two, and a driven locking mechanism is arranged between the second leg portion and the third leg portion for locking or unlocking the two; it further comprises a clutch mechanism between the active locking mechanism and the driven locking mechanism.wherein the active locking mechanism drives the driven locking mechanism to move through the clutch mechanism so that the driven locking mechanism and the active locking mechanism are in a locked state or an unlocked state at the same time;

[0005] Furthermore, the first leg section comprises at least two juxtaposed first tubular bodies; the second leg section comprises at least two juxtaposed second tubular bodies, a first sliding joint and a second sliding joint, which are fixedly connected between at least two second tubular bodies; the third leg section comprises at least two juxtaposed third tubular bodies; at least two of the first tubular bodies are slidably connected to the first sliding joint, and at least two of the third tubular bodies are slidably connected to the second sliding joint.

[0006] Furthermore, the first sliding joint is provided with a first through hole; the active locking mechanism comprises the following: a tension shaft movably arranged through the first through hole; a clamping block located on one side of the first sliding joint and fixedly connected to the end of the clamping shaft protruding from the first through hole; an actuating element which is rotatably connected to the side of the first sliding joint facing away from the clamping block about a pin; a transmission shaft fixedly connected to the other end of the tension shaft protruding from the first through hole and drivingly connected to the actuating member; wherein the actuating element drives the tension shaft and the clamping block to move via the transmission shaft during the rotation process, so that the clamping block and the first sliding joint cooperate with each other to clamp the first tubular body.

[0007] Furthermore, the actuating element is in particular a trigger, wherein the trigger comprises an integrally connected trigger arm and a trigger head, and the first sliding joint is provided with a groove for receiving the trigger head, wherein the trigger head is rotatably connected to the pin; the trigger head is provided with a C-shaped groove, wherein the two ends of the C-shaped groove have different distances from the rotation axis of the trigger head, and the transmission shaft projects into the C-shaped groove and can slide in the C-shaped groove.

[0008] Furthermore, a cavity is provided inside the trigger head, and the trigger head includes an upper wall as the upper wall of the cavity and a lower wall as the lower wall of the cavity, wherein a C-shaped groove is provided on both the upper wall and the lower wall; the transmission shaft is located in the cavity, and the two ends of the transmission shaft project into the C-shaped grooves of the upper wall and the lower wall, respectively.

[0009] Furthermore, the side wall of the trigger head facing the groove is provided with a first positioning groove and a second positioning groove, wherein the first positioning groove is arranged corresponding to the proximal end position of the C-shaped groove, which is close to the rotation axis of the trigger head, and the second positioning groove is arranged corresponding to the distal end position of the C-shaped groove, which is far from the rotation axis of the trigger head. The first sliding joint is provided with a glass bead spring, one end of which protrudes from the groove side wall of the groove. When the glass bead spring protrudes into the first positioning groove, the trigger head is positioned in the locking position. When the glass bead spring protrudes into the second positioning groove, the trigger head is positioned in the unlocking position.

[0010] Furthermore, a sliding groove is provided on the side of the first sliding joint facing the clamping block. When the clamping block is in the locked state, part or all of the clamping block protrudes into the sliding groove. The sliding groove is also provided with a first elastic element mounted on the outer periphery of the tension shaft and elastically arranged between the clamping block and the first sliding joint.

[0011] Furthermore, the first sliding joint is provided with a first guide hole which slidably cooperates with a part of the peripheral outer wall of the first tubular body, the hole wall of the first guide hole communicates with the groove wall of the sliding groove, and the side of the clamping block facing the first guide hole is provided with a first clamping arc surface which abuts against the peripheral outer wall of another part of the first tubular body in order to clamp the first tubular body in cooperation with the first sliding joint.

[0012] Furthermore, the clamping shaft is a clamping screw with an external thread at one end and the clamping block is connected to the clamping shaft via a thread.

[0013] Furthermore, the second sliding joint is provided with a second guide hole that slidably cooperates with a part of the peripheral outer wall of the third pipe body, an installation cavity is provided inside the second sliding joint, and the hole wall of the second guide hole communicates with the cavity side wall of the installation cavity; the driven locking mechanism comprises the following: a pair of pressure blocks slidably disposed in the installation cavity along the connecting direction of a pair of third tubular bodies; wherein the side of the pressure block facing the second guide hole is provided with a second clamping arc surface that abuts against the peripheral outer wall of another part of the third tubular body to clamp the third tubular body in cooperation with the second sliding joint, and a first inclined guide surface is provided on the other side of the pressure block facing away from the second clamping arc surface; a main oblique pressure block slidably disposed in the installation cavity along the direction perpendicular to the connecting direction of the pair of third tubular bodies; wherein the side surface of the main oblique pressure block connected to a pair of pressure blocks is provided with a second oblique guide surface that cooperates with the first oblique guide surface; a second elastic member elastically disposed between the second sliding joint and the pressure block, wherein the elastic force of the second elastic member drives the main oblique pressure block to move in the direction of compressing the pressure block; The clutch mechanism includes the following: a transmission rod, one end of which is fixedly connected to the actuating element and rotates synchronously with the actuating element, and the other end of which projects into the receiving cavity in the second sliding joint; a power transmission cam disposed in an installation cavity within the second sliding joint and fixedly connected to the transmission rod; wherein the power transmission cam, while rotating with the transmission rod, causes the main oblique pressure block to compress the pressure block, so that the pressure block and the second sliding joint cooperate to clamp the first state of the third tubular body and release the second state of the main oblique pressure block.

[0014] Furthermore, an auxiliary inclined pressure block is provided in the inner cavity of the main inclined pressure block, wherein the side surface of the auxiliary inclined pressure block, which is connected to a pair of pressure blocks, is provided with a third inclined guide surface which cooperates with the inclined surface of the first inclined guide surface, wherein the third inclined guide surface and the second inclined guide surface are arranged coplanar; the main inclined pressure block is threadably connected to an adjusting screw, wherein the adjusting screw is fixedly connected to the auxiliary inclined pressure block, and a third elastic element is provided between the main inclined pressure block and the auxiliary inclined pressure block, wherein the direction of the elastic force of the third elastic element is the same as the direction of movement of the main inclined pressure block.

[0015] Furthermore, one end of the third tubular body is telescopically arranged in the corresponding second tubular body and the other end of the third tubular body is fixedly connected to a third fixed joint, wherein an anti-slip disk is arranged on the outer circumference of one end of the third tubular body extending into the second tubular body, wherein the anti-slip disk is designed to prevent the third tubular body from slipping out of the second tubular body.

[0016] A support stand comprising a support body and a plurality of support legs with one-button operation as described above, which are connected to the support body.

[0017] The technical solution of the present utility model has the following advantages: 1. The one-button operation support leg provided by the present utility model is equipped with a clutch mechanism between the active locking mechanism and the driven locking mechanism. When the active locking mechanism performs the locking / unlocking operation, the clutch mechanism can drive the driven locking mechanism to perform the locking / unlocking operation synchronously. With this arrangement, the three leg sections can be synchronously locked or unlocked by simply operating the active locking mechanism, and one-button unlocking and fixing of the support legs can be achieved. The operation is simple and the telescopic adjustment speed of the support legs is effectively increased. 2. In the one-button operation support leg provided by the present utility model, the first leg portion, the second leg portion, and the third leg portion all have a structural shape consisting of at least two tubular bodies arranged side by side, which has the advantages of high support stability, a smaller designed diameter of the single tubular body, and easy portability. 3. The one-button operation support leg provided by the present utility model has an active locking mechanism composed of a tension shaft, a clamping block, an operating member, and a transmission shaft, which has the advantages of simple structure, easy operation, and good locking effect. 4. The one-button operation support leg provided by the present utility model is provided with a C-shaped groove on the trigger head. The transmission shaft protrudes into the C-shaped groove and is designed to slide in the C-shaped groove, which allows the rotational movement of the trigger to be smoothly converted into the linear movement of the clamping block. The transmission structure is simple and reliable. The rotational operation of the trigger is easy to accomplish, and the locking action is reliable. 5. The one-button operation support leg provided by the present utility model is provided with a cavity in the trigger head. The transmission shaft protrudes into the cavity, and both ends of the transmission shaft protrude into the C-shaped grooves on the upper wall and the lower wall, respectively. This arrangement has the advantages of a compact structure and high reliability of the transmission structure. 6. In the one-button operation support leg provided by the present utility model, the arrangement of a first positioning groove, a second positioning groove, and a glass bead spring can position the trigger head in the locking position or the unlocking position to prevent the looseness of the trigger due to accidental collision. 7. The one-button operation support leg provided by the present utility model has a sliding groove disposed in a first sliding joint, the clamping block is slidably disposed in the sliding groove, and a first elastic member is provided in the sliding groove between the clamping block and the first sliding joint, which has the advantages of a compact structure, high locking reliability, and is not easy to loosen. 8. In the one-button operation support leg provided by the present utility model, a first guide hole is provided at the first sliding joint and slidably fits a part of the peripheral outer wall of the first tubular body. The hole wall of the first guide hole communicates with the groove wall of the sliding groove, and the side of the clamp block facing the first guide hole is provided with a first clamping arc surface that abuts against the peripheral outer wall of another part of the first tubular body. With this arrangement, the clamping of the first tubular body can be better realized, and the clamping part is located inside the first sliding joint, which has the advantages of an overall good appearance and the clamping parts are not easily damaged. 9. The one-button operation support leg provided by the present utility model features a threaded connection between the tension shaft and the clamping block. During installation, the clamping force of the clamping block can be adjusted via the tension shaft. 10. The one-button operation support leg provided by the present utility model has a driven locking mechanism consisting of a pair of pressure blocks, a main oblique pressure block, and a second elastic element, which cooperates with a clutch mechanism consisting of a transmission rod and a power transmission cam. When the trigger of the active locking mechanism rotates, the main oblique pressure block can be driven into horizontal movement via the transmission rod and the power transmission cam, and the rotational movement of the transmission rod can be easily converted into the linear movement of the clamping block. It has the advantages of a simple transmission structure, high reliability, and reliable locking action. 11. The one-button operation support leg provided by the present utility model can drive the movement of the auxiliary inclined pressure block by turning the adjusting screw, thereby changing the travel stroke of a pair of pressure blocks. During the installation process, the clamping force of the third pipe body can be adjusted using a pair of pressure blocks. 12. In the one-button operation support leg provided by the present utility model, the retractable structure of the third tube body and the second tube body offers the advantages of simple structure and good aesthetics; and the anti-slip disc can prevent the third tube body from slipping out of the second tube body. 13. The support leg provided by the present utility model features the aforementioned one-button operation support leg, which enables one-button unlocking and one-button locking of the support leg. It is easy to operate and effectively improves the telescopic adjustment speed of the support leg. Brief description of the drawings

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present utility model, the accompanying drawings are briefly presented below. These drawings must be used in describing the specific embodiments or prior art. It is obvious that the accompanying drawings in the following description represent some of the embodiments of the present utility model, and that other drawings can be obtained based on the accompanying drawings for general technical personnel in the field, provided they do not perform creative work. Fig. 1 is a schematic structural diagram of the support legs in a retracted state in an embodiment of the present utility model; Fig. 2 is a schematic structural diagram of the support legs in an extended state in the embodiment of the present utility model; Fig. 3 is a cross-sectional view I at the position of the first sliding joint in the embodiment of the present utility model; Fig. 4 is a cross-sectional view II at the position of the first sliding joint in the embodiment of the present utility model; Fig. 5 is an exploded view of the tension shaft, the clamping block, the actuator, the transmission shaft, and the first sliding joint in the embodiment of the present utility model; Fig. 6 is a schematic structural diagram of the back of the first sliding joint in the embodiment of the present utility model; Fig. 7 is a schematic diagram of the connection structure between the actuator and the transmission shaft in the embodiment of the present utility model; Fig. 8 is a cross-sectional view at the position of the second sliding joint in the embodiment of the present utility model; Fig. 9 is a schematic diagram of the connection structure between the main slant pressure block and the auxiliary slant pressure block in the embodiment of the present utility model; Fig. 10 is a schematic structural diagram of the support legs of the support stand in a contracted state in the embodiment of the present utility model; Fig. 11 is a schematic structural diagram of the support legs of the support stand in an extended state in the embodiment of the present utility model.

[0019] In the figures: 1. first leg section; 11. first tube body; 12. first fixed joint; 13. second fixed joint; 2. Second leg section; 21. Second pipe body; 22. First sliding joint; 221. Groove; 222. Sliding groove; 223. First guide hole; 224. First through hole; 23. Second sliding joint; 231. Installation cavity; 232. Second guide hole; 3. third leg section; 31. third tube body; 32. third sliding joint; 33. non-slip disc; 4. Active locking mechanism; 41. Clamping shaft; 42. Clamping block; 421. First clamping arch; 43. Actuating element; 44. Transmission shaft; 431. Trigger arm; 432. Trigger head; 4321. C-shaped groove; 4322. Upper wall; 4323. Lower wall; 4324. First positioning groove; 4325. Second positioning groove; 45. First elastic element; 46. Pin; 47. Glass bead spring; 51. Pressure block; 511. Second clamping surface; 512. First inclined guide surface; 52. Main slant pressure block; 521. Second slant guide surface; 53. Second elastic element; 54. Auxiliary slant pressure block; 541. Third slant guide surface; 55. Adjusting screw; 56. Third elastic element; 6. Clutch mechanism; 61. Transmission rod; 62. Power transmission cam; 7. Support body. Description of the preferred embodiments

[0020] The technical solutions of the present utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the description of the embodiments represents only a portion of the embodiments of the present utility model and not all of them. Starting from the embodiments of the present utility model, all other embodiments that a person skilled in the art can produce without creative effort fall within the scope of protection of the present utility model.

[0021] When describing the embodiment of the present utility model, it is necessary to point out that an azimuth or positional relationship related to terms such as "central," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, has the azimuth or positional relationship based on the drawing. They are intended to facilitate and simplify the description of the present utility model, rather than indicating or implying that the said device or component must have a specific orientation, be constructed, and operate in a specific orientation. Therefore, they should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used only for discriminatory purposes and should not be understood to indicate a relative meaning.

[0022] When describing the embodiments of the present utility model, it is necessary to point out that the terms "assembly," "connection," and "connection" should be understood in a broad sense unless expressly stated or limited otherwise. For example, it may be a fixed connection, a detachable connection, or a one-piece connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection via an intermediate medium, and it may be a connection within the two elements. For general technical personnel in the field, the specific meaning of the above terms in the present utility model can be understood depending on the specific circumstances.

[0023] As in the Fig. 1 to 9, a support leg with one-button operation comprises a first leg portion 1, a second leg portion 2, and a third leg portion 3. In the longitudinal direction of the support leg, the second leg portion 2 can slide relative to the first leg portion 1, and the third leg portion 3 can slide relative to the second leg portion 2. An active locking mechanism is disposed between the first leg portion 1 and the second leg portion 2 for locking or unlocking the two, and a powered locking mechanism is disposed between the second leg portion 2 and the third leg portion 3 for locking or unlocking the two.The support leg further includes a clutch mechanism 6 between the active locking mechanism and the driven locking mechanism; the active locking mechanism drives the driven locking mechanism to move through the clutch mechanism 6, so that the driven locking mechanism and the active locking mechanism are in a locked state or an unlocked state simultaneously.

[0024] The one-button operation support leg is equipped with a clutch mechanism 6 between the active locking mechanism and the driven locking mechanism. When the active locking mechanism performs the locking / unlocking operation, the clutch mechanism 6 can drive the driven locking mechanism to perform the locking / unlocking operation synchronously. With this arrangement, the three leg sections can be locked or unlocked synchronously by simply operating the active locking mechanism, enabling one-button unlocking and one-button fixing of the support legs. This provides simple operation and effectively increases the telescopic adjustment speed of the support legs.

[0025] The first leg section 1 comprises two adjacent first tubular bodies 11, as well as a first fixed joint 12 and a second fixed joint 13, which are fastened between the two first tubular bodies 11. The first fixed joint 12 is fastened to an end of the two first tubular bodies 11 near the support body 7, and the second fixed joint 13 is fastened to the other end of the two first tubular bodies 11, remote from the support body 7. Of course, the number of adjacent first tubular bodies 11 can still be three or more.

[0026] The second leg section 2 comprises two adjacent second tubular bodies 21, as well as a first sliding joint 22 and a second sliding joint 23, which are fastened between the two second tubular bodies 21. The first sliding joint 22 is fastened to one end of the two second tubular bodies 21 near the first fixed joint 12, and the second sliding joint 23 is fastened to the other end of the two second tubular bodies 21, remote from the first fixed joint 12. Of course, the number of adjacent second tubular bodies 21 can still be three or more.

[0027] The third leg portion 3 includes two adjacent third tubular bodies 31 and a third sliding joint 32 secured between the two third tubular bodies 31. One end of the third tubular body 31 protrudes into the corresponding second tubular body 21, and the third fixed joint 32 is secured to the other end of the two third tubular bodies 31, which protrudes from the second tubular body 21. A non-slip washer is secured to the outer wall of one end of the third tubular body 31 that protrudes into the second tubular body 21, and the non-slip washer can prevent the third tubular body 31 from slipping out of the second tubular body 21. Of course, the number of adjacent third tubular bodies 31 may still be three or more.

[0028] In some embodiments, two adjacent first tubular bodies 11 are slidably connected to the first sliding joint 22, and two adjacent third tubular bodies 31 are slidably connected to the second sliding joint 23. The active locking mechanism is provided at the second sliding joint 23, the driven locking mechanism is provided at the second sliding joint 23, and the coupling mechanism 6 is connected between the first sliding joint 22 and the second sliding joint 23. The first leg portion 1, the second leg portion 2, and the third leg portion 3 all have a structural shape consisting of at least two tubular bodies arranged side by side, which offers the advantages of high support stability, a smaller designed diameter of the single tubular body, and easy portability.

[0029] In some embodiments, the first sliding joint 22 is provided with a first through-hole 224. The active locking mechanism includes a tension shaft 41, a clamping block 42, an actuating element 43, and a transmission shaft 44. The first through-hole 224 is arranged perpendicular to the first sliding joint 22, and the tension shaft 41 is movably inserted through the first through-hole 224 along the axial direction of the first through-hole 224. The clamping block 42 is located on one side of the first sliding joint 22 and is fixedly connected to one end of the tension shaft 41 that protrudes from the first through-hole 224. An actuating element 43 is rotatably connected to the side of the first sliding joint 22 facing away from the clamping block 42 about a pin 46, and a transmission shaft 44 is fixedly connected to the other end of the tensioning shaft 41, which protrudes from the first through hole 224, and drivingly connected to the actuating element 43.During the rotation process, the actuator 43 drives the tension shaft 41 and the clamping block 42 via the transmission shaft 44, so that the clamping block 42 and the first sliding joint 22 cooperate with each other to clamp the first tubular body 11. An active locking mechanism consists of a tension shaft 41, a clamping block 42, an actuator 43, and a transmission shaft 44, which offers the advantages of a simple structure, easy operation, and a good locking effect.

[0030] In some embodiments, the actuating element 43 is in particular a trigger, the trigger comprising an integrally connected trigger arm 431 and a trigger head 432, and the first sliding joint 22 is provided with a groove 221 for receiving the trigger head 432, the trigger head 432 being rotatably connected to the pin 46; the trigger head 432 is provided with a C-shaped groove 4321, the two ends of the C-shaped groove 4321 being at different distances from the rotation axis of the trigger head 432, and the transmission shaft 44 protrudes into the C-shaped groove 4321 and can slide in the C-shaped groove 4321. The trigger head 432 is provided with a C-shaped groove 4321. The transmission shaft 44 projects into the C-shaped groove 4321 and is designed to slide in the C-shaped groove 4321, whereby the rotary movement of the trigger can be smoothly converted into the linear movement of the clamping block 42.The transmission structure is simple and reliable. The trigger rotation is easy to perform, and the locking action is reliable.

[0031] In some embodiments, a cavity is provided inside the trigger head 432, and the trigger head 432 includes an upper wall 4322 as the upper wall of the cavity and a lower wall 4323 as the lower wall of the cavity, with a C-shaped groove 4321 provided on both the upper wall 4322 and the lower wall 4323; the transmission shaft 44 is located in the cavity, and the two ends of the transmission shaft 44 respectively protrude into the C-shaped grooves 4321 of the upper wall 4322 and the lower wall 4323. This arrangement offers the advantages of a compact structure, high locking reliability, and is not easily loosened.

[0032] In some embodiments, the side wall of the trigger head 432 facing the groove 221 is provided with a first positioning groove 4324 and a second positioning groove 4325, wherein the first positioning groove 4324 is arranged corresponding to the proximal end position of the C-shaped groove 4321, which is close to the rotation axis of the trigger head 432, and the second positioning groove 4325 is arranged corresponding to the distal end position of the C-shaped groove 4321, which is far from the rotation axis of the trigger head 432; the first sliding joint 22 is provided with a glass bead spring 47, one end of which protrudes from the groove side wall of the groove 221, and two glass bead springs 47 are provided along the thickness direction of the trigger head 432. When the glass bead spring 47 projects into the first positioning groove 4324, the trigger head 432 is positioned in the locking position.When the glass bead spring 47 protrudes into the second positioning groove 4325, the trigger head 432 is positioned in the unlocking position. The arrangement of a first positioning groove 4324, a second positioning groove 4325, and a glass bead spring 47 can position the trigger head 432 in the locking position or the unlocking position to prevent the trigger from becoming loose due to accidental collision.

[0033] In some embodiments, a sliding groove 222 is provided on the side of the first sliding joint 22 facing the clamping block 42. When the clamping block 42 is in the locked state, part or all of the clamping block 42 protrudes into the sliding groove 222; the sliding groove 222 is further provided with a first elastic member 45 attached to the outer periphery of the tension shaft 41 and elastically arranged between the clamping block 42 and the first sliding joint 22. The arrangement of the sliding groove 222 in the first sliding joint 22 has the advantage of a compact structure; and the arrangement of the first elastic member 45 between the clamping block 42 and the first sliding joint 22 enables the clamping block 42 to compress the first tubular body 11, ensuring high reliability in the locked state.

[0034] In some embodiments, a first guide hole 223 is provided on the first sliding joint 22 and slidably fits a portion of the peripheral outer wall of the first tubular body 11. The hole wall of the first guide hole 223 communicates with the groove wall of the sliding groove 222, and the side of the clamp block 42 facing the first guide hole 223 is provided with a first clamping arc surface 421 that abuts against the peripheral outer wall of another portion of the first tubular body 11 to clamp the first tubular body 11 in cooperation with the first sliding joint 22. With this arrangement, the clamping of the first tubular body 11 can be better realized, and the clamping part is located inside the first sliding joint 22, which has the advantages of an overall good appearance and the clamping parts are not easily damaged.

[0035] In some embodiments, the tension shaft 41 is a tension screw with an external thread at one end, and the clamping block 42 is connected to the tension shaft 41 via a thread. The tension shaft 41 and the clamping block 42 are connected to each other via a thread. During the assembly process, the clamping strength of the clamping block 42 can be adjusted via the tension shaft 41.

[0036] In this embodiment, the second sliding joint 23 is provided with a second guide hole 232 that slidably cooperates with a part of the peripheral outer wall of the third tubular body 31, an installation cavity 231 is provided inside the second sliding joint 23, and the hole wall of the second guide hole 232 communicates with the cavity side wall of the installation cavity 231.

[0037] The driven locking mechanism comprises a pair of pressure blocks 51, an inclined main oblique pressure block 52, and a second elastic member 53. A pair of pressure blocks 51 are slidably arranged in the installation cavity 231 along the connecting direction of a pair of third tubular bodies 31; the side of the pressure block 51 facing the second guide hole 232 is provided with a second clamping arc surface 511 that abuts against the peripheral outer wall of another part of the third tubular body 31 to clamp the third tubular body 31 in cooperation with the second sliding joint 23, and a first oblique guide surface 512 is provided on the other side of the pressure block 51 facing away from the second clamping arc surface 511.A main oblique pressure block 52 is slidably disposed in the installation cavity 231 along the direction perpendicular to the connecting direction of the pair of third tubular bodies 31. The side surface of the main oblique pressure block 52, which is connected to a pair of pressure blocks 51, is provided with a second oblique guide surface 521 that cooperates with the first oblique guide surface 512. A second elastic member 53 is elastically disposed between the second sliding joint 23 and the pressure block 51, and the elastic force of the second elastic member 53 drives the main oblique pressure block 52 to move in the direction of compressing the pressure block 51.

[0038] The clutch mechanism 6 includes a transmission rod 61 and a power transmission cam 62. One end of the transmission rod 61 is fixedly connected to the actuating member 43 and rotates synchronously with the actuating member 43, and the other end protrudes into the installation cavity 231 in the second sliding joint 23. A power transmission cam 62 is arranged in an installation cavity 231 within the second sliding joint 23 and fixedly connected to the transmission rod 61. The power transmission cam 62, while rotating with the transmission rod 61, causes the main oblique pressure block 52 to compress the pressure block 51, so that the pressure block 51 and the second sliding joint 23 cooperate to clamp the first state of the third tubular body 31 and release the second state of the main oblique pressure block 52.

[0039] A driven locking mechanism, consisting of a pair of pressure blocks 51, a main inclined pressure block 52, and a second elastic element 53, cooperates with a clutch mechanism 6 consisting of a transmission rod 61 and a power transmission cam 62. When the trigger of the active locking mechanism rotates, the main inclined pressure block 52 can be driven into a horizontal movement via the transmission rod 61 and the power transmission cam 62, and the rotational movement of the transmission rod 61 can be easily converted into the linear movement of the clamping block 42. It offers the advantages of a simple transmission structure, high reliability, and a reliable locking action.

[0040] In some embodiments, an auxiliary oblique pressure block 54 is provided in the inner cavity of the main oblique pressure block 52. The side surface of the auxiliary oblique pressure block 54, which is connected to a pair of pressure blocks 51, is provided with a third oblique guide surface 541 that cooperates with the inclined surface of the first oblique guide surface 512. The third oblique guide surface 541 and the second oblique guide surface 521 are arranged coplanarly. The main oblique pressure block 52 is threadably connected to an adjusting screw 55, the adjusting screw 55 being fixedly connected to the auxiliary oblique pressure block 54. A third elastic element 56 is provided between the main oblique pressure block 52 and the auxiliary oblique pressure block 54. The direction of the elastic force of the third elastic element 56 is the same as the direction of movement of the main oblique pressure block 52.The movement of the auxiliary inclined pressure block 54 can be driven by turning the adjusting screw 55, thereby changing the travel of a pair of pressure blocks 51. During the installation process, the clamping force of the third pipe body 31 can be adjusted using a pair of pressure blocks 51.

[0041] As in the Fig. As shown in Figures 10 to 11, an embodiment of the present invention also provides a support stand primarily used for supporting cameras. The support stand comprises a support body 7 and three support legs pivoted to the support body 7. The support legs are the one-button operation support legs described above.

[0042] It should be understood that the number of support legs can be adjusted according to needs; for example, the number of support legs is four. This type of support stand uses the one-button operation support leg described above, which allows for one-button release and one-button locking of the support leg, making it easy to operate and effectively increasing the telescopic adjustment speed of the support legs.

[0043] In summary, the one-button operation support leg and the support tripod provided by the embodiments of the present utility model can enable one-button unlocking and one-button fixing of the support legs and has the advantages of simple structure, convenient operation, and good locking reliability, thereby effectively improving the telescopic adjustment speed of the support legs during photography.

[0044] Of course, the above-mentioned embodiments serve only as examples for clear explanation and are not intended to limit the embodiments. Other forms of changes or modifications are also possible for general technical personnel in this field based on the above description. An exhaustive list of all embodiments is neither necessary nor possible. The obvious changes or modifications derived therefrom remain within the scope of protection of the present utility model.

Claims

[1] A support leg with one-button operation, comprising a first leg portion (1), a second leg portion (2), and a third leg portion (3); wherein, in the longitudinal direction of the support leg, the second leg portion (2) can slide relative to the first leg portion (1), and the third leg portion (3) can slide relative to the second leg portion (2); wherein an active locking mechanism is arranged between the first leg portion (1) and the second leg portion (2) for locking or unlocking the two, and a powered locking mechanism is arranged between the second leg portion (2) and the third leg portion (3) for locking or unlocking the two; characterized bythat it further comprises a clutch mechanism (6) between the active locking mechanism and the driven locking mechanism; wherein the active locking mechanism drives the driven locking mechanism to move through the clutch mechanism (6), so that the driven locking mechanism and the active locking mechanism are simultaneously in a locked state or an unlocked state. [2] Support leg with one-button operation according to claim 1, characterized bythat the first leg section (1) comprises at least two first tubular bodies (11) arranged next to one another; that the second leg section (2) comprises at least two second tubular bodies (21) arranged next to one another, a first sliding joint (22) and a second sliding joint (23) which are firmly connected between at least two second tubular bodies (21); that the third leg section (3) comprises at least two third tubular bodies (31) arranged next to one another; that at least two of the first tubular bodies (11) are slidably connected to the first sliding joint (22), and at least two of the third tubular bodies (31) are slidably connected to the second sliding joint (23). [3] Support leg with one-button operation according to claim 2, characterized by that the first sliding joint (22) is provided with a first through hole (224); wherein the active locking mechanism comprises: a tension shaft (41) movably arranged through the first through hole (224); a clamping block (42) located on one side of the first sliding joint (22) and fixedly connected to the end of the tensioning shaft (41) projecting from the first through hole (224); an actuating element (43) which is connected to the side of the first sliding joint (22) facing away from the clamping block (42) so as to be rotatable about a pin (46); a transmission shaft (44) fixedly connected to the other end of the tension shaft (41) projecting from the first through hole (224) and drivingly connected to the actuating element (43); wherein the actuating element (43) drives the tensioning shaft (41) and the clamping block (42) to move via the transmission shaft (44) during the rotation process, so that the clamping block (42) and the first sliding joint (22) cooperate with one another to clamp the first tubular body (11). [4] Support leg with one-button operation according to claim 3, characterized byin that the actuating element (43) is in particular a trigger, wherein the trigger comprises an integrally connected trigger arm (431) and a trigger head (432), and the first sliding joint (22) is provided with a groove (221) for receiving the trigger head (432), wherein the trigger head (432) is rotatably connected to the pin (46); wherein the trigger head (432) is provided with a C-shaped groove (4321), wherein the two ends of the C-shaped groove (4321) are at different distances from the axis of rotation of the trigger head (432), and the transmission shaft (44) projects into the C-shaped groove (4321) and can slide in the C-shaped groove (4321). [5] Support leg with one-button operation according to claim 4, characterized bythat a cavity is provided inside the trigger head (432), and the trigger head (432) comprises an upper wall (4322) as the upper wall of the cavity and a lower wall (4323) as the lower wall of the cavity, wherein a C-shaped groove (4321) is provided on both the upper wall (4322) and the lower wall (4323); that the transmission shaft (44) is located in the cavity and the two ends of the transmission shaft (44) respectively protrude into the C-shaped grooves (4321) of the upper wall (4322) and the lower wall (4323). [6] Support leg with one-button operation according to claim 5, characterized bythat the side wall of the trigger head (432) facing the groove (221) is provided with a first positioning groove (4324) and a second positioning groove (4325), wherein the first positioning groove (4324) is arranged corresponding to the proximal end position of the C-shaped groove (4321), which is close to the axis of rotation of the trigger head (432), and the second positioning groove (4325) is arranged corresponding to the distal end position of the C-shaped groove (4321), which is far away from the axis of rotation of the trigger head (432); that the first sliding joint (22) is provided with a glass bead spring (47), one end of which protrudes from the groove side wall of the groove (221). When the glass bead spring (47) protrudes into the first positioning groove (4324), the trigger head (432) is positioned in the locking position. When the glass bead spring (47) projects into the second positioning groove (4325), the trigger head (432) is positioned in the unlocking position. [7] Support leg with one-button operation according to claim 3, characterized by that a sliding groove (222) is provided on the side of the first sliding joint (22) facing the clamping block (42). When the clamping block (42) is in the locked state, part or all of the clamping block (42) projects into the sliding groove (222); wherein the sliding groove (222) is further provided with a first elastic element (45) which is attached to the outer circumference of the tensioning shaft (41) and is elastically arranged between the clamping block (42) and the first sliding joint (22). [8] Support leg with one-button operation according to claim 7, characterized byin that the first sliding joint (22) is provided with a first guide hole (223) which slidably cooperates with a part of the peripheral outer wall of the first tubular body (11), the hole wall of the first guide hole (223) communicates with the groove wall of the sliding groove (222), and the side of the clamping block (42) facing the first guide hole (223) is provided with a first clamping arc surface (421) which bears against the peripheral outer wall of another part of the first tubular body (11) in order to clamp the first tubular body (11) in cooperation with the first sliding joint (22). [9] Support leg with one-button operation according to claim 3, characterized by that the clamping shaft (41) is a clamping screw with an external thread at one end and the clamping block (42) is connected to the clamping shaft (41) via a thread. [10] Support leg with one-button operation according to claim 3, characterized bythat the second sliding joint (23) is provided with a second guide hole (232) which slidably cooperates with a part of the peripheral outer wall of the third tubular body (31), an installation cavity (231) is provided inside the second sliding joint (23), and the hole wall of the second guide hole (232) communicates with the cavity side wall of the installation cavity (231); that the driven locking mechanism comprises: a pair of pressure blocks (51) slidably arranged in the installation cavity (231) along the connecting direction of a pair of third tubular bodies (31); wherein the side of the pressure block (51) facing the second guide hole (232) is provided with a second clamping arc surface (511) which abuts against the peripheral outer wall of another part of the third tubular body (31) in order to clamp the third tubular body (31) in cooperation with the second sliding joint (23), and a first inclined guide surface (512) is provided on the other side of the pressure block (51) facing away from the second clamping arc surface (511); a main oblique pressure block (52) slidably disposed in the installation cavity (231) along the direction perpendicular to the connecting direction of the pair of third tubular bodies (31); wherein the side surface of the main oblique pressure block (52) connected to a pair of pressure blocks (51) is provided with a second oblique guide surface (521) cooperating with the first oblique guide surface (512); a second elastic member (53) elastically disposed between the second sliding joint (23) and the pressure block (51), wherein the elastic force of the second elastic member (53) drives the main oblique pressure block (52) to move in the direction of compressing the pressure block (51); that the coupling mechanism (6) comprises: a transmission rod (61) having one end fixedly connected to the actuating element (43) and rotating synchronously with the actuating element (43), and the other end extending into the receiving cavity (231) in the second sliding joint (23); a power transmission cam (62) disposed in an installation cavity (231) within the second sliding joint (23) and fixedly connected to the transmission rod (61); wherein the power transmission cam (62), while rotating with the transmission rod (61), causes the main oblique pressure block (52) to compress the pressure block (51) so that the pressure block (51) and the second sliding joint (23) cooperate to clamp the first state of the third tubular body (31) and release the second state of the main oblique pressure block (52). [11] Support leg with one-button operation according to claim 10, characterized byin that an auxiliary inclined pressure block (54) is provided in the inner cavity of the main inclined pressure block (52), wherein the side surface of the auxiliary inclined pressure block (54), which is connected to a pair of pressure blocks (51), is provided with a third inclined guide surface (541) which cooperates with the inclined surface of the first inclined guide surface (512), wherein the third inclined guide surface (541) and the second inclined guide surface (521) are arranged coplanar; in that the main inclined pressure block (52) is connected via a thread to an adjusting screw (55), wherein the adjusting screw (55) is fixedly connected to the auxiliary inclined pressure block (54), and a third elastic element (56) is provided between the main inclined pressure block (52) and the auxiliary inclined pressure block (54), wherein the direction of the elastic force of the third elastic element (56) is the same as the direction of movement of the main inclined pressure block (52). [12] Support leg with one-button operation according to claim 1, characterized by in that one end of the third tubular body (31) is arranged telescopically in the corresponding second tubular body (21) and the other end of the third tubular body (31) is fixedly connected to a third fixed joint (32), wherein a non-slip disc is arranged on the outer circumference of one end of the third tubular body (31) which extends into the second tubular body (21), wherein the non-slip disc is designed to prevent the third tubular body (31) from slipping out of the second tubular body (21). [13] Support tripod, characterized by that it comprises a support body (7) and a plurality of support legs with one-button operation according to one of claims 1 to 12, which are connected to the support body (7).

Images