One-key operation type supporting leg and supporting foot stool

Abstract

The utility model discloses a one-key operation type supporting leg and a supporting foot stool. The one-key operation type supporting leg comprises a first-section bracket, a second-section bracket and a third-section bracket, in the length extension direction of the supporting leg, the second section of bracket can slide relative to the first section of bracket, and the third section of bracket can slide relative to the second section of bracket; a driving locking mechanism for locking or unlocking the first-section bracket and the second-section bracket is arranged between the first-section bracket and the second-section bracket; a driven locking mechanism for locking or unlocking the second-section bracket and the third-section bracket is arranged between the second-section bracket and the third-section bracket; an interlocking mechanism is connected between the driving locking mechanism and the driven locking mechanism; the driving locking mechanism drives the driven locking mechanism to move through the interlocking mechanism, so that the driven locking mechanism and the driving locking mechanism are in a locking state or an unlocking state at the same time. Synchronous locking or unlocking of the three sections of supports can be achieved only by operating the active locking mechanism, one-key releasing and one-key fixing of the supporting legs are achieved, operation is easy, and the adjusting speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic equipment, in particular to a one-button operation type supporting leg and a supporting tripod. Background Art

[0002] In daily life, it is often necessary to use equipment such as a support frame to support photographic equipment such as cameras. The support frame includes a plurality of support legs, each of which is a retractable structural design so as to adjust the height of the support frame. Such a retractable support leg usually has three sections of support rods, and a set of locking mechanisms are provided between the first section of the support rod and the second section of the support rod, and between the second section of the support rod and the third section of the support rod. Each set of locking mechanisms has an independent lock / unlock switch, and both sets of lock / unlock switches need to be turned on to unfold all the support rods on the support leg. If you want to unfold the entire support frame, you need to turn on six lock / unlock switches, which is extremely inconvenient to use. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the prior art that the height adjustment operation of the support leg is complicated and the adjustment speed is slow, thereby providing a one-button operation support leg and support footrest.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A one-button-operated support leg comprises a first bracket section, a second bracket section and a third bracket section; in the length extension direction of the support leg, the second bracket section can slide relative to the first bracket section, and the third bracket section can slide relative to the second bracket section; an active locking mechanism for locking or unlocking the first bracket section and the second bracket section is provided between the first bracket section and the second bracket section, and a driven locking mechanism for locking or unlocking the second bracket section and the third bracket section is provided between the second bracket section and the third bracket section; and further comprising an interlocking mechanism connected between the active locking mechanism and the driven locking mechanism; the active locking mechanism drives the driven locking mechanism to move through the interlocking 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.

[0006] Further, the first section of the bracket includes at least two first tubes arranged side by side; the second section of the bracket includes at least two second tubes arranged side by side, and a first sliding joint and a second sliding joint fixedly connected between the at least two second tubes; the third section of the bracket includes at least two third tubes arranged side by side; at least two of the first tubes are slidably connected to the first sliding joint, and at least two of the third tubes are slidably connected to the second sliding joint.

[0007] Furthermore, the first sliding joint is provided with a first through hole; the active locking mechanism comprises:

[0008] A tensioning shaft, movably disposed in the first through hole;

[0009] A clamping block, located at one side of the first sliding joint and fixedly connected to an end of the tensioning shaft extending out of the first through hole;

[0010] The operating member is rotatably connected to the side of the first sliding joint facing away from the clamping block around a pin shaft.

[0011] A transmission shaft, fixedly connected to the other end of the tensioning shaft extending out of the first through hole and transmission-connected to the operating member;

[0012] During the rotation process, the operating member drives the tensioning shaft and the clamping block to move through the transmission shaft, so that the clamping block and the first sliding joint cooperate to clamp the first tube body.

[0013] Furthermore, the operating member is specifically a pull buckle, and the pull buckle includes a pull buckle arm and a pull buckle head that are integrally connected. The first sliding joint is provided with a groove for accommodating the pull buckle head, and the pull buckle head is rotatably connected to the pin shaft; a C-shaped groove is provided on the pull buckle head, and the two ends of the C-shaped groove are at different distances from the rotation axis of the pull buckle head, and the transmission shaft extends into the C-shaped groove and can slide in the C-shaped groove.

[0014] Furthermore, a concave cavity is provided inside the pull buckle head, and the pull buckle head includes an upper top wall serving as the upper wall of the concave cavity and a lower bottom wall serving as the lower wall of the concave cavity, and the C-shaped groove is provided on the upper top wall and the lower bottom wall; the transmission shaft is located in the concave cavity, and the two ends of the transmission shaft extend into the C-shaped grooves of the upper top wall and the lower bottom wall respectively.

[0015] Furthermore, a first positioning groove and a second positioning groove are provided on the side wall of the pull buckle head facing the groove, the first positioning groove is arranged corresponding to a proximal position of the C-shaped groove close to the rotation axis of the pull buckle head, and the second positioning groove is arranged corresponding to a distal position of the C-shaped groove far from the rotation axis of the pull buckle head; the first sliding joint is provided with a glass bead spring with one end extending from the side wall of the groove, when the glass bead spring extends into the first positioning groove, the pull buckle head is positioned in a locked position, and when the glass bead spring extends into the second positioning groove, the pull buckle head is positioned in an unlocked position.

[0016] Furthermore, a sliding groove is provided on the side of the first sliding joint facing the clamping block, and when the clamping block is in a locked state, part or all of the clamping block extends into the sliding groove; a first elastic member is also provided in the sliding groove, which is sleeved on the outer periphery of the tensioning shaft and elastically arranged between the clamping block and the first sliding joint.

[0017] Furthermore, the first sliding joint is provided with a first guide hole that slidably cooperates with a portion of the circumferential outer wall of the first tube body, the hole wall of the first guide hole is communicated with the groove wall of the slide groove, and the clamping block is provided with a first clamping arc surface on the side facing the first guide hole that abuts against another portion of the circumferential outer wall of the first tube body to cooperate with the first sliding joint to clamp the first tube body.

[0018] Furthermore, the tensioning shaft is a tensioning screw having an external thread at one end, and the clamping block is threadedly connected to the tensioning shaft.

[0019] Furthermore, the second sliding joint is provided with a second guide hole that is slidably matched with a portion of the circumferential outer wall of the third tube body, and the interior of the second sliding joint is provided with an installation cavity, and the hole wall of the second guide hole is communicated with the cavity side wall of the installation cavity; the driven locking mechanism includes:

[0020] A pair of clamping blocks are slidably arranged in the installation cavity along the connecting direction of the pair of third tubes; a second clamping arc surface is provided on one side of the clamping block facing the second guide hole, which abuts against another part of the circumferential outer wall of the third tube to cooperate with the second sliding joint to clamp the third tube, and a first inclined guide surface is provided on the other side of the clamping block facing away from the second clamping arc surface;

[0021] A main oblique pressure block is slidably arranged in the installation cavity along a direction perpendicular to the connecting line direction of the pair of third tube bodies; a second oblique guide surface matching the oblique surface of the first oblique guide surface is provided on the side surface where the main oblique pressure block is connected to the pair of clamping blocks;

[0022] A second elastic member, elastically arranged between the second sliding joint and the pressing block, wherein the elastic force of the second elastic member drives the main oblique pressing block to move in a direction of pressing the pressing block;

[0023] The interlocking mechanism comprises:

[0024] A transmission rod, one end of which is fixedly connected to the operating member and rotates synchronously with the operating member, and the other end of which extends into the mounting cavity in the second sliding joint;

[0025] A force transmission cam is located in the mounting cavity in the second sliding joint and is fixedly connected to the transmission rod; the force transmission cam pushes the main oblique pressure block to squeeze the clamping block during the rotation with the transmission rod so that the clamping block and the second sliding joint cooperate to clamp the third tube body in a first state, and release the main oblique pressure block in a second state.

[0026] Furthermore, a secondary inclined pressure block is provided in the internal concave cavity of the main inclined pressure block, and a third inclined guide surface matching the inclined surface of the first inclined guide surface is provided on the side surface of the secondary inclined pressure block connected to a pair of the clamping blocks, and the third inclined guide surface and the second inclined guide surface are arranged in the same plane; the main inclined pressure block is threadedly connected with an adjusting screw, and the adjusting screw is fixedly connected to the secondary inclined pressure block, and a third elastic member is provided between the main inclined pressure block and the secondary inclined pressure block, and the direction of the elastic force of the third elastic member is the same as the movement direction of the main inclined pressure block.

[0027] Furthermore, one end of the third tube body is telescopically arranged inside the corresponding second tube body, the other end of the third tube body is fixedly connected to a third fixed joint, and an anti-slip sheet is provided on the outer periphery of one end of the third tube body extending into the second tube body, and the anti-slip sheet is used to prevent the third tube body from slipping out of the second tube body.

[0028] A supporting tripod comprises a supporting body and a plurality of one-button-operated supporting legs as described above connected to the supporting body.

[0029] The technical solution of the utility model has the following advantages:

[0030] 1. The one-button operation support leg provided by the utility model has an interlocking mechanism between the active locking mechanism and the driven locking mechanism. When the active locking mechanism performs the locking / unlocking operation, the interlocking mechanism can drive the driven locking mechanism to synchronously perform the locking / unlocking operation. With such a configuration, the three-section bracket can be synchronously locked or unlocked by operating the active locking mechanism, and the support leg can be released and fixed with one button. The operation is simple, and the telescopic adjustment speed of the support leg is effectively improved.

[0031] 2. The one-button-operated support leg provided by the utility model has a structural form in which the first section bracket, the second section bracket and the third section bracket all have at least two tubes arranged side by side, which has the advantages of high support stability, the diameter of a single tube can be designed to be smaller, and it is easy to carry.

[0032] 3. The one-button operation support leg provided by the utility model has an active locking mechanism composed of a tensioning shaft, a clamping block, an operating member and a transmission shaft, and has the advantages of simple structure, easy operation and good locking effect.

[0033] 4. The one-button operation support leg provided by the utility model has a C-shaped groove on the buckle head, and the transmission shaft extends into the C-shaped groove and can slide in the C-shaped groove. The structural design can easily convert the rotational motion of the buckle into the linear motion of the clamping block. The transmission structure is simple and reliable, the rotation operation of the buckle is easy to achieve, and the locking effect is reliable.

[0034] 5. The one-button-operated support leg provided by the utility model has a concave cavity arranged inside the buckle head, the transmission shaft extends into the concave cavity, and the two ends of the transmission shaft extend into the C-shaped grooves of the upper top wall and the lower bottom wall respectively; such an arrangement has the advantages of good compactness and high reliability of the transmission structure.

[0035] 6. The one-button operation support leg provided by the utility model, the arrangement of the first positioning groove, the second positioning groove and the glass bead spring can position the buckle head in a locked position or an unlocked position to prevent the buckle from loosening due to accidental collision.

[0036] 7. The one-button-operated support leg provided by the utility model has a slide groove arranged in the first sliding joint, the clamping block is slidably arranged in the slide groove, and a first elastic member is arranged in the slide groove and located between the clamping block and the first sliding joint. It has the advantages of good compactness of structure, high locking reliability and not easy to loosen.

[0037] 8. The one-button operation support leg provided by the utility model has a first guide hole on the first sliding joint that is slidably matched with a part of the circumferential outer wall of the first tube body, the hole wall of the first guide hole is communicated with the groove wall of the slide groove, and the clamping block is provided with a first clamping arc surface that abuts against another part of the circumferential outer wall of the first tube body on the side facing the first guide hole. Such a setting can better achieve the clamping of the first tube body, and the clamping part is located inside the first sliding joint, which has the advantages of good overall aesthetics and the clamping part is not easily damaged.

[0038] 9. The one-button operation support leg provided by the utility model, the tightening shaft and the clamping block are threadedly connected in such a way that the clamping force of the clamping block can be adjusted through the tightening shaft during installation.

[0039] 10. The one-button-operated supporting leg provided by the utility model comprises a driven locking mechanism consisting of a pair of clamping blocks, a main oblique pressure block and a second elastic member, and cooperates with an interlocking mechanism consisting of a transmission rod and a force transmission cam. When the lever of the active locking mechanism rotates, the main oblique pressure block can be driven to move horizontally through the transmission rod and the force transmission cam, and the rotational motion of the transmission rod can be easily converted into the linear motion of the clamping block. It has the advantages of simple transmission structure, high reliability, and reliable locking effect.

[0040] 11. The one-button operation support leg provided by the utility model can drive the secondary inclined pressure block to move by rotating the adjusting screw, thereby changing the movement stroke of the pair of clamping blocks. During the installation process, the clamping force of the pair of clamping blocks on the third tube body can be adjusted.

[0041] 12. The one-button operation support leg provided by the utility model and the retractable structural design of the third tube body and the second tube body have the advantages of simple structure and good aesthetics; and the anti-slip sheet can prevent the third tube body from sliding out of the second tube body.

[0042] 13. The support tripod provided by the utility model adopts the above-mentioned one-button operation support leg, which can realize one-button release and one-button fixation of the support leg, is easy to operate, and effectively improves the telescopic adjustment speed of the support leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is a schematic diagram of the structure of the supporting legs in the embodiment of the utility model in a retracted state;

[0045] Figure 2 This is a schematic diagram of the structure of the supporting legs in the embodiment of the utility model in a stretched state;

[0046] Figure 3 The cross-sectional view of the first sliding joint in the embodiment of the utility model Figure 1 ;

[0047] Figure 4 This is a cross-sectional view of the first sliding joint in the embodiment of the utility model. Figure 2 ;

[0048] Figure 5 An exploded view of the tensioning shaft, the clamping block, the operating member, the transmission shaft and the first sliding joint in the embodiment of the utility model;

[0049] Figure 6 This is a schematic structural diagram of the rear side of the first sliding joint in an embodiment of the utility model;

[0050] Figure 7 This is a schematic diagram of the connection structure between the operating member and the transmission shaft in the embodiment of the utility model;

[0051] Figure 8It is a cross-sectional view of the second sliding joint in the embodiment of the utility model;

[0052] Fig. 9 This is a schematic diagram of the connection structure of the main oblique pressure block and the auxiliary oblique pressure block in the embodiment of the utility model;

[0053] Fig.10 This is a schematic diagram of the structure of the supporting legs of the supporting stand in the embodiment of the utility model in a retracted state;

[0054] Fig.11 It is a schematic structural diagram of the supporting legs of the supporting tripod in an embodiment of the utility model in a stretched state.

[0055] Description of reference numerals:

[0056] 1. First bracket; 11. First tube body; 12. First fixed joint; 13. Second fixed joint;

[0057] 2. Second bracket; 21. Second tube body; 22. First sliding joint; 221. Groove; 222. Slide groove; 223. First guide hole; 224. First through hole; 23. Second sliding joint; 231. Mounting cavity; 232. Second guide hole;

[0058] 3. The third bracket; 31. The third tube body; 32. The third fixed joint; 33. The anti-slip sheet;

[0059] 4. Active locking mechanism; 41. Tensioning shaft; 42. Clamping block; 421. First clamping arc surface; 43. Operating member; 44. Transmission shaft; 431. Pull-on arm; 432. Pull-on head; 4321. C-shaped groove; 4322. Upper top wall; 4323. Lower bottom wall; 4324. First positioning groove; 4325. Second positioning groove; 45. First elastic member; 46. Pin; 47. Glass bead spring;

[0060] 51, pressing block; 511, second clamping arc surface; 512, first inclined guide surface;

[0061] 52, main oblique pressure block; 521, second oblique guide surface; 53, second elastic member; 54, auxiliary oblique pressure block; 541, third oblique guide surface; 55, adjusting screw; 56, third elastic member;

[0062] 6. interlocking mechanism; 61. transmission rod; 62. force transmission cam;

[0063] 7. Support the main body. DETAILED DESCRIPTION

[0064] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] like Figure 1 -9 shows a one-button-operated support leg, comprising a first bracket section 1, a second bracket section 2 and a third bracket section 3. In the length extension direction of the support leg, the second bracket section 2 can slide relative to the first bracket section 1, and the third bracket section 3 can slide relative to the second bracket section 2. An active locking mechanism for locking or unlocking the first bracket section 1 and the second bracket section 2 is provided between the first bracket section 1 and the second bracket section 2, and a driven locking mechanism for locking or unlocking the second bracket section 2 and the third bracket section 3 is provided between the second bracket section 2 and the third bracket section 3. The support leg also includes an interlocking mechanism 6 connected between the active locking mechanism and the driven locking mechanism; the active locking mechanism drives the driven locking mechanism to move through the interlocking mechanism 6, so that the driven locking mechanism and the active locking mechanism are in a locked state or in an unlocked state at the same time.

[0068] This one-button-operated support leg has an interlocking mechanism 6 set between the active locking mechanism and the driven locking mechanism. When the active locking mechanism performs the locking / unlocking operation, the interlocking mechanism 6 can drive the driven locking mechanism to synchronously perform the locking / unlocking operation. With this arrangement, the three-section bracket can be synchronously locked or unlocked by operating the active locking mechanism, and the support leg can be released and fixed with one button. The operation is simple, and the telescopic adjustment speed of the support leg is effectively improved.

[0069] The first bracket 1 includes two first tubes 11 arranged side by side, a first fixing joint 12 and a second fixing joint 13 fixed between the two first tubes 11. The first fixing joint 12 is fixed to one end of the two first tubes 11 close to the support body 7, and the second fixing joint 13 is fixed to the other end of the two first tubes 11 away from the support body 7. Of course, the number of the first tubes 11 can still be three or more arranged side by side.

[0070] The second bracket 2 includes two second tubes 21 arranged side by side, a first sliding joint 22 and a second sliding joint 23 fixed between the two second tubes 21. The first sliding joint 22 is fixed to one end of the two second tubes 21 close to the first fixed joint 12, and the second sliding joint 23 is fixed to the other end of the two second tubes 21 away from the first fixed joint 12. Of course, the number of the second tubes 21 can still be three or more arranged side by side.

[0071] The third bracket 3 includes two third tubes 31 arranged side by side and a third fixing joint 32 fixed between the two third tubes 31. One end of the third tube 31 extends into the interior of the corresponding second tube 21, and the third fixing joint 32 is fixed to the other end of the two third tubes 31 extending out of the second tube 21. A non-slip sheet is fixed on the outer wall of the end of the third tube 31 extending into the second tube 21, and the non-slip sheet is used to prevent the third tube 31 from sliding out of the second tube 21. Of course, the number of the third tubes 31 can still be three or more arranged side by side.

[0072] In some embodiments, two side-by-side first tubes 11 are slidably connected to the first sliding joint 22, and two side-by-side third tubes 31 are slidably connected to the second sliding joint 23. The active locking mechanism is arranged on the second sliding joint 23, the driven locking mechanism is arranged on the second sliding joint 23, and the interlocking mechanism 6 is connected between the first sliding joint 22 and the second sliding joint 23. The first bracket 1, the second bracket 2, and the third bracket 3 all have a structural form composed of at least two side-by-side tubes, which has the advantages of high support stability, the diameter of a single tube can be designed to be smaller, and it is easy to carry.

[0073] In some embodiments, the first sliding joint 22 is provided with a first through hole 224. The active locking mechanism includes a tensioning shaft 41, a clamping block 42, an operating member 43 and a transmission shaft 44. The first through hole 224 is arranged perpendicular to the first sliding joint 22, and the tensioning shaft 41 is movably arranged on 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 tensioning shaft 41 extending out of the first through hole 224. The operating member 43 is rotatably connected around a pin 46 to the side of the first sliding joint 22 facing away from the clamping block 42, and the transmission shaft 44 is fixedly connected to the other end of the tensioning shaft 41 extending out of the first through hole 224 and is transmission-connected to the operating member 43. During the rotation process, the operating member 43 drives the tensioning shaft 41 and the clamping block 42 to move through the transmission shaft 44, so that the clamping block 42 and the first sliding joint 22 cooperate to clamp the first tube 11. The active locking mechanism composed of the tensioning shaft 41, the clamping block 42, the operating member 43 and the transmission shaft 44 has the advantages of simple structure, easy operation and good locking effect.

[0074] In some embodiments, the operating member 43 is specifically a pull button, which includes a pull button arm 431 and a pull button head 432 that are integrally connected. The first sliding joint 22 is provided with a groove 221 for accommodating the pull button head 432, and the pull button head 432 is rotatably connected to the pin 46; the pull button head 432 is provided with a C-shaped groove 4321, and the two ends of the C-shaped groove 4321 are at different distances from the rotation axis of the pull button head 432, and the transmission shaft 44 extends into the C-shaped groove 4321 and can slide in the C-shaped groove 4321. The structural design of providing the C-shaped groove 4321 on the pull button head 432 and the transmission shaft 44 extending into the C-shaped groove 4321 and being able to slide in the C-shaped groove 4321 can easily convert the rotational motion of the pull button into the linear motion of the clamping block 42, the transmission structure is simple and smooth, and the reliability is high, the rotation operation of the pull button is easy to achieve, and the locking effect is reliable.

[0075] In some embodiments, a cavity is provided inside the pull button head 432, and the pull button head 432 includes an upper top wall 4322 as the upper wall of the cavity and a lower bottom wall 4323 as the lower wall of the cavity, and a C-shaped groove 4321 is provided on both the upper top wall 4322 and the lower bottom wall 4323; the transmission shaft 44 is located in the cavity, and the two ends of the transmission shaft 44 extend into the C-shaped grooves 4321 of the upper top wall 4322 and the lower bottom wall 4323, respectively. Such a configuration has the advantages of good compactness and high reliability of the transmission structure.

[0076] In some embodiments, a first positioning groove 4324 and a second positioning groove 4325 are provided on the side wall of the pull buckle head 432 facing the groove 221. The first positioning groove 4324 is provided corresponding to the proximal position of the C-shaped groove 4321 close to the rotation axis of the pull buckle head 432, and the second positioning groove 4325 is provided corresponding to the distal position of the C-shaped groove 4321 far from the rotation axis of the pull buckle head 432; the first sliding joint 22 is provided with a glass bead spring 47 with one end extending from the groove side wall of the groove 221, and two glass bead springs 47 are provided along the thickness direction of the pull buckle head 432. When the glass bead spring 47 extends into the first positioning groove 4324, the pull buckle head 432 is positioned in the locking position, and when the glass bead spring 47 extends into the second positioning groove 4325, the pull buckle head 432 is positioned in the unlocking position. The provision of the first positioning groove 4324, the second positioning groove 4325 and the glass bead spring 47 can position the buckle head 432 at a locking position or an unlocking position, thereby preventing the buckle from loosening due to accidental collision.

[0077] In some embodiments, a slide groove 222 is further provided on one side of the first sliding joint 22 facing the clamping block 42. When the clamping block 42 is in a locked state, part or all of the clamping block 42 extends into the slide groove 222. A first elastic member 45 is further provided in the slide groove 222, which is sleeved on the outer periphery of the tensioning shaft 41 and elastically provided between the clamping block 42 and the first sliding joint 22. The provision of the slide groove 222 in the first sliding joint 22 has the advantage of good compactness of the structure; and the provision of the first elastic member 45 between the clamping block 42 and the first sliding joint 22 can enable the clamping block 42 to press the first tube 11, thereby ensuring high reliability in the locked state.

[0078] In some embodiments, the first sliding joint 22 is provided with a first guide hole 223 that is slidably matched with a portion of the circumferential outer wall of the first tube body 11, the hole wall of the first guide hole 223 is communicated with the groove wall of the slide groove 222, and the clamping block 42 is provided with a first clamping arc surface 421 that abuts against another portion of the circumferential outer wall of the first tube body 11 to cooperate with the first sliding joint 22 to clamp the first tube body 11. With such a configuration, the first tube body 11 can be clamped better, and the clamping part is located inside the first sliding joint 22, which has the advantages of good overall aesthetics and the clamping part is not easily damaged.

[0079] In some embodiments, the tensioning shaft 41 is a tensioning screw having an external thread at one end, and the clamping block 42 is threadedly connected to the tensioning shaft 41. In the threaded connection between the tensioning shaft 41 and the clamping block 42, the clamping force of the clamping block 42 can be adjusted through the tensioning shaft 41 during installation.

[0080] In this embodiment, the second sliding joint 23 is provided with a second guide hole 232 that slides with a portion of the circumferential outer wall of the third tube body 31, and the interior of the second sliding joint 23 is provided with an installation cavity 231, and the hole wall of the second guide hole 232 is communicated with the cavity side wall of the installation cavity 231.

[0081] The driven locking mechanism includes a pair of clamping blocks 51, a main oblique pressure block 52 and a second elastic member 53. The pair of clamping blocks 51 are slidably arranged in the installation cavity 231 along the connecting line direction of the pair of third tube bodies 31; the side of the clamping block 51 facing the second guide hole 232 is provided with a second clamping arc surface 511 which abuts against another part of the circumferential outer wall of the third tube body 31 to cooperate with the second sliding joint 23 to clamp the third tube body 31, and the other side of the clamping block 51 facing away from the second clamping arc surface 511 is provided with a first oblique guide surface 512. The main oblique pressure block 52 is slidably arranged in the installation cavity 231 along the direction perpendicular to the connecting line direction of the pair of third tube bodies 31, and the side surface of the main oblique pressure block 52 connected to the pair of clamping blocks 51 is provided with a second oblique guide surface 521 which cooperates with the oblique surface of the first oblique guide surface 512. The second elastic member 53 is elastically arranged between the second sliding joint 23 and the clamping 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 squeezing the clamping block 51.

[0082] The interlocking mechanism 6 includes a transmission rod 61 and a force transmission cam 62. One end of the transmission rod 61 is fixedly connected to the operating member 43 and rotates synchronously with the operating member 43, and the other end extends into the mounting cavity 231 in the second sliding joint 23. The force transmission cam 62 is located in the mounting cavity 231 in the second sliding joint 23 and is fixedly connected to the transmission rod 61; the force transmission cam 62 pushes the main oblique pressure block 52 to squeeze the clamping block 51 during the process of rotating with the transmission rod 61, so that the clamping block 51 and the second sliding joint 23 cooperate to clamp the third tube 31 in the first state, and the main oblique pressure block 52 is released in the second state.

[0083] The driven locking mechanism composed of a pair of clamping blocks 51, a main oblique pressure block 52 and a second elastic member 53 cooperates with an interlocking mechanism 6 composed of a transmission rod 61 and a force transmission cam 62. When the lever of the active locking mechanism rotates, the main oblique pressure block 52 can be driven to move horizontally through the transmission rod 61 and the force transmission cam 62, and the rotational motion of the transmission rod 61 can be easily converted into the linear motion of the clamping block 42. It has the advantages of simple transmission structure, high reliability, and reliable locking effect.

[0084] In some embodiments, a secondary oblique pressure block 54 is provided in the inner cavity of the main oblique pressure block 52, and a third oblique guide surface 541 matching the oblique surface of the first oblique guide surface 512 is provided on the side surface of the secondary oblique pressure block 54 connected to the pair of clamping blocks 51, and the third oblique guide surface 541 and the second oblique guide surface 521 are arranged in the same plane; the main oblique pressure block 52 is threadedly connected with an adjusting screw 55, and the adjusting screw 55 is fixedly connected to the secondary oblique pressure block 54, and a third elastic member 56 is provided between the main oblique pressure block 52 and the secondary oblique pressure block 54, and the elastic force direction of the third elastic member 56 is the same as the movement direction of the main oblique pressure block 52. By rotating the adjusting screw 55, the secondary oblique pressure block 54 can be driven to move, thereby changing the movement stroke of the pair of clamping blocks 51, and during the installation process, the clamping force of the pair of clamping blocks 51 on the third tube body 31 can be adjusted.

[0085] like Fig.10 As shown in Figure 11, the embodiment of the utility model also provides a support tripod, which is mainly used to support photographic equipment. The support tripod includes a support body 7 and three support legs hinged on the support body 7, and the support legs are the one-button operation support legs described above. It can be understood here that the number of support legs can be adaptively selected according to needs, for example, there are 4 support legs. This support tripod adopts the one-button operation support legs mentioned above, which can realize one-button release and one-button fixation of the support legs, is simple to operate, and effectively improves the telescopic adjustment speed of the support legs.

[0086] To sum up, the one-button operation support leg and support tripod provided by the embodiment of the utility model can realize one-button release and one-button fixation of the support leg, has the advantages of simple structure, convenient operation, and good locking reliability, and effectively improves the telescopic adjustment speed of the support leg during photography.

[0087] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A one-button operation support leg, comprising a first bracket section (1), a second bracket section (2) and a third bracket section (3); in the length extension direction of the support leg, the second bracket section (2) can slide relative to the first bracket section (1), and the third bracket section (3) can slide relative to the second bracket section (2); an active locking mechanism for locking or unlocking the first bracket section (1) and the second bracket section (2) is provided between the first bracket section (1) and the second bracket section (2), and a passive locking mechanism for locking or unlocking the second bracket section (2) and the third bracket section (3) is provided between the second bracket section (2) and the third bracket section (3); characterized in that: It also includes an interlocking mechanism (6) connected between the active locking mechanism and the driven locking mechanism; the active locking mechanism drives the driven locking mechanism to move through the interlocking mechanism (6), so that the driven locking mechanism and the active locking mechanism are in a locked state or an unlocked state at the same time.

2. The one-button operation support leg according to claim 1, characterized in that: The first bracket section (1) comprises at least two first tubes (11) arranged side by side; the second bracket section (2) comprises at least two second tubes (21) arranged side by side, and a first sliding joint (22) and a second sliding joint (23) fixedly connected between the at least two second tubes (21); the third bracket section (3) comprises at least two third tubes (31) arranged side by side; at least two of the first tubes (11) are slidably connected to the first sliding joints (22), and at least two of the third tubes (31) are slidably connected to the second sliding joints (23).

3. The one-button operation support leg according to claim 2, characterized in that: The first sliding joint (22) is provided with a first through hole (224); the active locking mechanism comprises: A tensioning shaft (41) movably inserted into the first through hole (224); A clamping block (42), located on one side of the first sliding joint (22) and fixedly connected to an end of the tensioning shaft (41) extending out of the first through hole (224); The operating member (43) is rotatably connected to the side of the first sliding joint (22) facing away from the clamping block (42) around a pin shaft (46). A transmission shaft (44), fixedly connected to the other end of the tensioning shaft (41) extending out of the first through hole (224), and transmission-connected to the operating member (43); During the rotation process, the operating member (43) drives the tensioning shaft (41) and the clamping block (42) to move via the transmission shaft (44), so that the clamping block (42) and the first sliding joint (22) cooperate to clamp the first tube (11).

4. The one-button operation support leg according to claim 3, characterized in that: The operating member (43) is specifically a lever, and the lever comprises a lever arm (431) and a lever head (432) which are integrally connected. The first sliding joint (22) is provided with a groove (221) for accommodating the lever head (432), and the lever head (432) is rotatably connected to the pin shaft (46); the lever head (432) is provided with a C-shaped groove (4321), and the two ends of the C-shaped groove (4321) are at different distances from the rotation axis of the lever head (432), and the transmission shaft (44) extends into the C-shaped groove (4321) and can slide in the C-shaped groove (4321).

5. The one-button operation support leg according to claim 4, characterized in that: A concave cavity is provided inside the pull button head (432), and the pull button head (432) includes an upper top wall (4322) serving as the upper wall of the concave cavity and a lower bottom wall (4323) serving as the lower wall of the concave cavity, and the C-shaped groove (4321) is provided on both the upper top wall (4322) and the lower bottom wall (4323); the transmission shaft (44) is located in the concave cavity, and the two ends of the transmission shaft (44) extend into the C-shaped grooves (4321) of the upper top wall (4322) and the lower bottom wall (4323), respectively.

6. The one-button operation support leg according to claim 5, characterized in that: The side wall of the pull buckle head (432) facing the groove (221) is provided with a first positioning groove (4324) and a second positioning groove (4325); the first positioning groove (4324) is arranged corresponding to a proximal position of the C-shaped groove (4321) close to the rotation axis of the pull buckle head (432); the second positioning groove (4325) is arranged corresponding to a distal position of the C-shaped groove (4321) far from the rotation axis of the pull buckle head (432); the first sliding joint (22) is provided with a glass bead spring (47) with one end extending from the groove side wall of the groove (221); when the glass bead spring (47) extends into the first positioning groove (4324), the pull buckle head (432) is positioned in a locking position; when the glass bead spring (47) extends into the second positioning groove (4325), the pull buckle head (432) is positioned in an unlocking position.

7. The one-button operation support leg according to claim 3, characterized in that: A sliding groove (222) is also provided on one side of the first sliding joint (22) facing the clamping block (42); when the clamping block (42) is in a locked state, part or all of the clamping block (42) extends into the sliding groove (222); a first elastic member (45) is also provided in the sliding groove (222), which is sleeved on the outer periphery of the tensioning shaft (41) and elastically arranged between the clamping block (42) and the first sliding joint (22).

8. The one-button-operated support leg according to claim 7, characterized in that: The first sliding joint (22) is provided with a first guide hole (223) which is slidably matched with a part of the circumferential outer wall of the first tube body (11); the hole wall of the first guide hole (223) is communicated with the groove wall of the slide groove (222); and the clamping block (42) is provided with a first clamping arc surface (421) which abuts against another part of the circumferential outer wall of the first tube body (11) to cooperate with the first sliding joint (22) to clamp the first tube body (11).

9. The one-button operation support leg according to claim 3, characterized in that: The tensioning shaft (41) is a tensioning screw having an external thread at one end, and the clamping block (42) is threadedly connected to the tensioning shaft (41).

10. The one-button operation support leg according to claim 3, characterized in that: The second sliding joint (23) is provided with a second guide hole (232) which is slidably matched with a part of the circumferential outer wall of the third tube (31); the interior of the second sliding joint (23) is provided with a mounting cavity (231); the hole wall of the second guide hole (232) is communicated with the cavity side wall of the mounting cavity (231); the driven locking mechanism comprises: A pair of clamping blocks (51) are slidably arranged in the installation cavity (231) along the connecting line direction of the pair of third tube bodies (31); a second clamping arc surface (511) is provided on one side of the clamping block (51) facing the second guide hole (232), which abuts against another part of the circumferential outer wall of the third tube body (31) to cooperate with the second sliding joint (23) to clamp the third tube body (31); and a first inclined guide surface (512) is provided on the other side of the clamping block (51) facing away from the second clamping arc surface (511); A main oblique pressure block (52) is slidably arranged in the installation cavity (231) along a direction perpendicular to the connecting line direction of the pair of third tube bodies (31); a second oblique guide surface (521) matching the oblique surface of the first oblique guide surface (512) is provided on the side surface where the main oblique pressure block (52) and the pair of pressing blocks (51) are connected; A second elastic member (53) is elastically arranged between the second sliding joint (23) and the pressing block (51), and the elastic force of the second elastic member (53) drives the main oblique pressing block (52) to move in a direction of pressing the pressing block (51); The interlocking mechanism (6) comprises: A transmission rod (61), one end of which is fixedly connected to the operating member (43) and rotates synchronously with the operating member (43), and the other end of which extends into a mounting cavity (231) in the second sliding joint (23); A force transmission cam (62) is located in a mounting cavity (231) in the second sliding joint (23) and is fixedly connected to the transmission rod (61); the force transmission cam (62) pushes the main oblique pressure block (52) to squeeze the clamping block (51) during the process of rotating with the transmission rod (61) so that the clamping block (51) and the second sliding joint (23) cooperate to clamp the third tube body (31) in a first state, and release the main oblique pressure block (52) in a second state.

11. The one-button operation support leg according to claim 10, characterized in that: A secondary inclined pressure block (54) is provided in the internal concave cavity of the main inclined pressure block (52); a third inclined guide surface (541) matching the inclined surface of the first inclined guide surface (512) is provided on the side surface of the secondary inclined pressure block (54) connected to a pair of the clamping blocks (51); the third inclined guide surface (541) and the second inclined guide surface (521) are arranged coplanarly; the main inclined pressure block (52) is threadedly connected with an adjusting screw (55); the adjusting screw (55) is fixedly connected to the secondary inclined pressure block (54); a third elastic member (56) is provided between the main inclined pressure block (52) and the secondary inclined pressure block (54); the direction of the elastic force of the third elastic member (56) is the same as the movement direction of the main inclined pressure block (52).

12. The one-button operation support leg according to claim 2, characterized in that: One end of the third tube body (31) is telescopically arranged in the corresponding second tube body (21), the other end of the third tube body (31) is fixedly connected to a third fixed joint (32), and a non-slip sheet is sleeved on the outer periphery of one end of the third tube body (31) extending into the second tube body (21), and the non-slip sheet is used to prevent the third tube body (31) from sliding out of the second tube body (21).

13. A support stand, characterized in that: It comprises a supporting body (7) and a plurality of one-button-operated supporting legs connected to the supporting body (7) as described in any one of claims 1 to 12.

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