Supporting leg capable of being quickly unlocked and locked and supporting frame

Abstract

The utility model discloses a supporting leg capable of being unlocked and locked quickly and a supporting frame. The supporting leg comprises an unlocking and locking device, a fixing pipe, a traction rope assembly, a plurality of telescopic pipes and a plurality of inner pipes. The telescopic pipes are arranged in the fixed pipe and are sleeved step by step; the inner pipe is arranged in the fixed pipe and is sleeved step by step; the traction rope assembly is connected between the inner pipe and the fixed pipe, so that the telescopic pipe can be relatively expanded or contracted; the unlocking and locking device comprises a control part, a linkage part and an action part, the control part is arranged on the fixed pipe, the action part is arranged on the fixed pipe, and the action part is connected with the control part through the linkage part and acts on the first-stage telescopic pipe so as to limit relative movement between the first-stage telescopic pipe and the fixed pipe; by means of the structure, one-key unlocking and locking of the multi-stage telescopic pipe are achieved, rapid unfolding and folding of the supporting legs are achieved, and very good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of photographic equipment, in particular to a supporting foot and a supporting frame which can be quickly unlocked. Background Art

[0002] Mobile phones and cameras (or tablet computers, laptop computers, etc.) are commonly used devices in people's daily life and work. In order to meet the shooting needs of some users, a bracket is used to support the shooting equipment during shooting to free the user's hands. The bracket usually includes a plurality of support legs, and the support legs are retractable to adjust the height of the bracket. The retractable support leg has three sections of support rods, and a group of locking mechanisms are arranged between two adjacent sections of support rods. Each group of locking mechanisms has an independent locking / unlocking switch. Both groups of locking / unlocking switches need to be turned on to unfold all the support rods on the support leg. If you want to unfold the entire bracket, you need to turn on 6 locking / unlocking switches, which is extremely inconvenient to use. Therefore, there is an urgent need for a support leg and a support frame that can be quickly unlocked to solve the above problems. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a support leg and a support frame that can be quickly unlocked.

[0004] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a support foot that can be quickly unlocked, including an unlocking device, a fixing tube, a traction rope assembly, a plurality of telescopic tubes and a plurality of inner tubes;

[0005] The telescopic tube is installed in the fixed tube and sleeved step by step;

[0006] The inner tube is installed in the fixed tube and sleeved step by step;

[0007] The traction rope assembly is connected between the inner tube and the fixed tube so that the telescopic tube can be relatively expanded or contracted;

[0008] The unlocking device includes a control part, a linkage part and an action part. The control part is installed on the fixed tube, and the action part is installed on the fixed tube. The action part is connected to the control part through the linkage part and acts on the first-stage telescopic tube to limit the relative movement between the first-stage telescopic tube and the fixed tube.

[0009] As one of the preferred embodiments of the present utility model, the control unit includes a first fixing seat and a locking button, an unlocking button, a first transmission assembly and a second transmission assembly arranged in the first fixing seat;

[0010] The locking button is connected to the linkage part through the first transmission assembly and has a first state and a second state;

[0011] The unlock button is connected to the linkage part through the second transmission assembly and has a first state and a second state;

[0012] When the locking button is in the first state, the locking button can drive the unlocking button to enter the second state through the linkage part and drive the action part through the linkage part to limit the relative movement between the first-level telescopic tube and the fixed tube, or, when the unlocking button is in the first state, the locking button can drive the locking button to enter the second state through the linkage part and drive the action part through the linkage part to release the restriction on the relative movement between the first-level telescopic tube and the fixed tube.

[0013] As one of the preferred embodiments of the utility model, the first transmission assembly includes a first action block installed on the linkage part, the first action block has a first inclined surface, and the locking button is provided with a second inclined surface matching the first inclined surface.

[0014] As one of the preferred embodiments of the utility model, the second transmission assembly includes a second action block, a driving block and a transmission block. The second action block is mounted on the linkage part, one end of the driving block is rotatably connected to the first fixed seat, and the two ends of the transmission block are respectively rotatably connected to one end of the driving block and the second action block.

[0015] As one of the preferred embodiments of the utility model, the linkage part is configured as a pull rope, one end of the pull rope is connected to the control part, and the other end of the pull rope is connected to the action part.

[0016] As one of the preferred embodiments of the utility model, the action part includes a second fixed seat and a clamp, a pull rod, a first linkage block, a second linkage block and a third linkage block arranged in the second fixed seat;

[0017] The clamping sleeve is arranged on the outer wall of the second-stage telescopic tube;

[0018] The first linkage block and the second linkage block are arranged on both sides of the clamp;

[0019] The pull rod is passed through the clamp and its two ends are respectively connected to one end of the first linkage block and one end of the second linkage block;

[0020] Two ends of the third linkage block are rotatably connected to the other end of the first linkage block and the other end of the second linkage block respectively;

[0021] The linkage part is connected with the first linkage block or the second linkage block to drive the two ends of the clamp to approach each other through the first linkage block or the second linkage block, so that the clamp tightly holds the second-stage telescopic tube.

[0022] As one of the preferred embodiments of the utility model, two telescopic tubes are provided, two inner tubes are provided, and the traction rope assembly includes a first fixed pulley, a second fixed pulley, a first traction rope and a second traction rope;

[0023] The first fixed pulley is installed on the top of the first-stage telescopic tube;

[0024] The second fixed pulley is installed at the bottom of the second-stage inner tube;

[0025] One end of the first traction rope is connected to the bottom of the fixed tube, and the other end of the first traction rope is wound around the second fixed pulley and connected to the top of the second-stage telescopic tube;

[0026] One end of the second traction rope is connected to the top of the fixed tube, and the other end of the second traction rope is wound around the first fixed pulley and connected to the top of the second-stage telescopic tube.

[0027] As one of the preferred embodiments of the utility model, a support foot that can be quickly unlocked also includes a gap adjustment component connected between two adjacent telescopic tubes.

[0028] As one of the preferred embodiments of the utility model, the gap adjustment assembly includes an abutment ring, a locking sleeve and a plurality of balls. The abutment ring is arranged on the telescopic tube located at the rear stage. The locking sleeve is sleeved on the outside of the telescopic tube and one end is connected to the telescopic tube located at the front stage, and the other end is threadedly connected to the abutment ring. A third inclined surface is arranged on the inner wall of the locking sleeve. The plurality of balls are arranged between the telescopic tube located at the rear stage and the third inclined surface. The third inclined surface can push the balls to squeeze the balls against the telescopic tube located at the rear stage when adjusting the relative position between the locking sleeve and the abutment ring.

[0029] A support frame comprises the support feet.

[0030] The beneficial effects of the utility model include: a supporting foot and a supporting frame that can be quickly unlocked, the supporting foot comprising an unlocking device, a fixed tube, a traction rope assembly, a plurality of telescopic tubes and a plurality of inner tubes; the telescopic tube is installed in the fixed tube and is sleeved step by step; the inner tube is installed in the fixed tube and is sleeved step by step; the traction rope assembly is connected between the inner tube and the fixed tube so that the telescopic tube can be relatively expanded or contracted; the unlocking device comprises a control part, a linkage part and an action part, the control part is installed on the fixed tube, the action part is installed on the fixed tube, the action part is connected to the control part through the linkage part and acts on the first-stage telescopic tube to limit the relative movement between the first-stage telescopic tube and the fixed tube; the above structure realizes one-button unlocking of the multi-stage telescopic tubes, realizes the rapid expansion and storage of the supporting foot, and has very good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 It is a schematic diagram of the structure of a support leg that can be quickly unlocked;

[0033] Figure 2A first exploded view of a support leg that can be quickly unlocked;

[0034] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0035] Figure 4 A second exploded view of a support leg that can be quickly unlocked;

[0036] Figure 5 for Figure 4 A partial enlarged view of the middle B area;

[0037] Figure 6 A cross-sectional view of a support leg that can be quickly unlocked;

[0038] Figure 7 for Figure 6 A partial enlarged view of the middle C area;

[0039] Figure 8 for Figure 6 A partial enlarged view of the D area in the middle. DETAILED DESCRIPTION

[0040] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0041] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0044] Reference Figures 1 to 8 , a support leg that can be quickly unlocked, comprising an unlocking device 10, a fixing tube 20, a traction rope assembly 30, a plurality of telescopic tubes 40 and a plurality of inner tubes 50;

[0045] The telescopic tube 40 is installed in the fixed tube 20 and sleeved step by step;

[0046] The inner tube 50 is installed in the fixed tube 20 and sleeved step by step;

[0047] The traction rope assembly 30 is connected between the inner tube 50 and the fixed tube 20 so that the telescopic tube 40 can be relatively expanded or contracted;

[0048] The unlocking device 10 includes a control part 11, a linkage part 12 and an action part 13. The control part 11 is installed on the fixed tube 20, and the action part 13 is installed on the fixed tube 20. The action part 13 is connected to the control part 11 through the linkage part 12 and acts on the first-stage telescopic tube 40 to limit the relative movement between the first-stage telescopic tube 40 and the fixed tube 20.

[0049] In this utility model:

[0050] ① The supporting foot preferably has two telescopic tubes 40 and two inner tubes 50. Correspondingly, the traction rope assembly 30 includes a first fixed pulley 31, a second fixed pulley 32, a first traction rope 33 and a second traction rope 34; the first fixed pulley 31 is installed at the top of the first-stage telescopic tube 40; the second fixed pulley 32 is installed at the bottom of the second-stage inner tube 50; one end of the first traction rope 33 is connected to the bottom of the fixed tube 20, and the other end of the first traction rope 33 is wound around the second fixed pulley 32 and connected to the top of the second-stage telescopic tube 40; one end of the second traction rope 34 is connected to the top of the fixed tube 20, and the other end of the second traction rope 34 is wound around the first fixed pulley 31 and connected to the top of the second-stage telescopic tube 40; it should be noted that the top refers to the side of the supporting foot close to the control part 11 in the retracted state, and the bottom refers to the side of the supporting foot close to the action part 13 in the retracted state;

[0051] Furthermore, the control unit 11 is installed on one side of the fixed seat 20, and the action unit 13 is installed on the other side of the fixed seat 20 and acts on the first-stage telescopic tube 40. When in use, the control unit 11 controls the action unit 13 to release the restriction on the first-stage telescopic tube 40, so that the first-stage telescopic tube 40 and the second-stage telescopic tube 40 are expanded outward relative to the fixed seat 20 under the action of the traction rope assembly 30, thereby forming a three-stage telescopic structure (the fixed tube 20 is the first stage, the first-stage telescopic tube 40 is the second stage, and the second-stage telescopic tube 40 is the third stage); of course, the number of stages of the telescopic structure can be increased by increasing the number of telescopic tubes 40 and inner tubes 50. Correspondingly, the number of fixed pulleys and traction ropes included in the traction rope assembly 30 should also be increased, which will not be elaborated here.

[0052] ② Take the example of switching the support leg from the retracted state to the extended state for explanation. Figure 1-3 In the control part 11, the control part 11 includes a first fixing seat 111 and a locking button 112, an unlocking button 113, a first transmission assembly 114 and a second transmission assembly 115 arranged in the first fixing seat 111; the locking button 112 is connected to the linkage part 12 through the first transmission assembly 114 and has a first state and a second state; the unlocking button 113 is connected to the linkage part 12 through the second transmission assembly 115 and has a first state and a second state; the locking button 112 can drive the unlocking button 113 to enter the second state through the linkage part 12 when it is in the first state, and drive the action part 13 through the linkage part 12 to limit the relative movement between the first-stage telescopic tube 40 and the fixed tube 20, or, when the unlocking button 113 is in the first state, drive the locking button 112 to enter the second state through the linkage part 12, and drive the action part 13 through the linkage part 12 to release the restriction on the relative movement between the first-stage telescopic tube 40 and the fixed tube 20;

[0053] Specifically, in the embodiment where the linkage portion 12 is a pull rope, when the unlock button 113 in the second state is pressed (the lock button 112 is in the first state), the unlock button 113 will enter the first state, and at the same time, the pull rope driving action portion 13 will release the restriction on the relative movement between the first-stage telescopic tube 40 and the fixed tube 20, and the pull rope will also drive the lock button 112 from the first state to the second state; at this time, the telescopic tube 40 can move relative to the fixed tube 20 until all the telescopic tubes 40 are fully unfolded, and when the lock button 112 in the second state is pressed (the unlock button 113 is in the second state), the lock button 112 will enter the first state, and at the same time, the pull rope driving action portion 13 will limit the relative movement between the first-stage telescopic tube 40 and the fixed tube 20, and the pull rope will also drive the unlock button 113 from the second state to the first state; it should be noted that the restriction on the relative movement between the first-stage telescopic tube 40 and the subsequent-stage telescopic tube 40 is completed by the traction rope assembly 30.

[0054] ③Reference Figure 1 , 4 -5, in the action part 13, the action part 13 includes a second fixed seat 131 and a clamp 132, a pull rod 133, a first linkage block 134, a second linkage block 135 and a third linkage block 136 arranged in the second fixed seat 131; the clamp 132 is sleeved on the outer wall of the second-stage telescopic tube 40; the first linkage block 134 and the second linkage block 135 are arranged on both sides of the clamp 132; the pull rod 133 is passed through the clamp 132 and its two ends are respectively connected to one end of the first linkage block 134 and one end of the second linkage block 135; the two ends of the third linkage block 136 are respectively rotatably connected to the other end of the first linkage block 134 and the other end of the second linkage block 135; the linkage part 12 is connected to the first linkage block 134 or the second linkage block 135, so as to drive the two ends of the clamp 132 to approach each other through the first linkage block 134 or the second linkage block 135, so that the clamp 132 tightly holds the second-stage telescopic tube 40;

[0055] Specifically, in an embodiment where the linkage portion 12 is set as a pull rope, a third fixed pulley is provided in the control portion 11, a fourth fixed pulley located on one side of the clamp 132 is provided in the action portion 13, the first transmission assembly 114 and the second transmission assembly 115 are connected to the pull rope, one end of the pull rope is fixedly connected to the second fixing seat 131, and the other end of the pull rope is passed through the fixing tube 20, wound around the third fixed pulley, wound around the fourth fixed pulley and connected to the second linkage block 135. By arranging a reset spring between the two movable ends of the clamp 132, when the control portion 11 drives one end of the pull rope to move downward, The two movable ends of the clamp 132 will be driven to approach each other through the pull rod 133, the first linkage block 134 and the second linkage block 135, thereby clamping the first-stage telescopic tube 40; when the control unit 11 drives the other end of the pull rope to move downward, the pull rod 133, the first linkage block 134 and the second linkage block 135 will release the action on the two movable ends of the clamp 132, so that the two movable ends of the clamp 132 move away from each other under the action of the return spring, thereby loosening the first-stage telescopic tube 40; the process of switching the supporting foot from the expanded state to the retracted state is opposite to the above process, which will not be repeated here.

[0056] ④ The utility model has the advantages that: the multi-stage telescopic tube can be unlocked with one button through the above structure, and the supporting legs can be quickly deployed and stored, which has very good practicality.

[0057] In one embodiment, the first transmission assembly 114 includes a first action block 1141 mounted on the linkage portion 12 , the first action block 1141 has a first inclined surface 1142 , and the lock button 112 is provided with a second inclined surface 1143 matched with the first inclined surface 1142 .

[0058] In one embodiment, the second transmission assembly 115 includes a second action block 1151, a driving block 1152 and a transmission block 1153. The second action block 1151 is installed on the linkage part 12, one end of the driving block 1152 is rotatably connected to the first fixed seat 111, and the two ends of the transmission block 1153 are respectively rotatably connected to one end of the driving block 1152 and the second action block 1151.

[0059] In one embodiment, the linkage part 12 is configured as a pull rope, one end of the pull rope is connected to the control part 11 , and the other end of the pull rope is connected to the action part 13 .

[0060] In one embodiment, the support foot that can be quickly unlocked further includes a gap adjustment component 60 connected between two adjacent telescopic tubes 40 .

[0061] As a preferred embodiment of the gap adjustment component 60, the gap adjustment component 60 includes an abutment ring 61, a locking sleeve 62 and a plurality of balls 63. The abutment ring 61 is arranged on the telescopic tube 40 located at the rear stage. The locking sleeve 62 is sleeved on the outer side of the telescopic tube 40 and one end is connected to the telescopic tube 40 located at the front stage, and the other end is threadedly connected to the abutment ring 61. A third inclined surface 64 is arranged on the inner wall of the locking sleeve 62. A plurality of balls 63 are arranged between the telescopic tube 40 located at the rear stage and the third inclined surface 64. The third inclined surface 64 can push the balls 63 to squeeze the balls 63 against the telescopic tube 40 located at the rear stage when adjusting the relative position between the locking sleeve 62 and the abutment ring 61. This arrangement can make up for the gap between the two adjacent telescopic tubes 40, thereby avoiding shaking between the rear telescopic tube 40 and the front telescopic tube 40 during relative movement, thereby improving the user experience.

[0062] A support frame comprises the support feet.

[0063] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A support leg that can be quickly unlocked, characterized in that: It comprises a locking device (10), a fixing tube (20), a traction rope assembly (30), a plurality of telescopic tubes (40) and a plurality of inner tubes (50); The telescopic tube (40) is installed in the fixed tube (20) and sleeved step by step; The inner tube (50) is installed in the fixed tube (20) and sleeved step by step; The traction rope assembly (30) is connected between the inner tube (50) and the fixed tube (20) so that the telescopic tube (40) can be relatively expanded or contracted; The unlocking and locking device (10) comprises a control part (11), a linkage part (12) and an action part (13); the control part (11) is mounted on the fixed tube (20); the action part (13) is mounted on the fixed tube (20); the action part (13) is connected to the control part (11) through the linkage part (12) and acts on the first-stage telescopic tube (40) to limit the relative movement between the first-stage telescopic tube (40) and the fixed tube (20).

2. A quickly unlockable support leg according to claim 1, characterized in that: The control unit (11) comprises a first fixing seat (111), and a locking button (112), an unlocking button (113), a first transmission assembly (114), and a second transmission assembly (115) arranged in the first fixing seat (111); The locking button (112) is connected to the linkage part (12) via the first transmission assembly (114) and has a first state and a second state; The unlocking button (113) is connected to the linkage part (12) via the second transmission assembly (115) and has a first state and a second state; The locking button (112) can drive the unlocking button (113) to enter a second state through the linkage part (12) when the locking button (112) is in a first state, and drive the action part (13) to restrict the relative movement between the first-stage telescopic tube (40) and the fixed tube (20) through the linkage part (12), or the unlocking button (113) can drive the locking button (112) to enter a second state through the linkage part (12) when the locking button (112) is in a first state, and drive the action part (13) to release the restriction on the relative movement between the first-stage telescopic tube (40) and the fixed tube (20) through the linkage part (12).

3. A quickly unlockable support leg according to claim 2, characterized in that: The first transmission assembly (114) comprises a first action block (1141) mounted on the linkage portion (12), the first action block (1141) having a first inclined surface (1142), and the locking button (112) having a second inclined surface (1143) matched with the first inclined surface (1142).

4. The support foot capable of rapid unlocking according to claim 2, characterized in that: The second transmission assembly (115) comprises a second action block (1151), a driving block (1152) and a transmission block (1153); the second action block (1151) is mounted on the linkage portion (12); one end of the driving block (1152) is rotatably connected to the first fixed seat (111); and two ends of the transmission block (1153) are rotatably connected to one end of the driving block (1152) and the second action block (1151), respectively.

5. The support foot capable of rapid unlocking according to claim 1, characterized in that: The linkage part (12) is configured as a pull rope, one end of which is connected to the control part (11), and the other end of which is connected to the action part (13).

6. The support foot capable of rapid unlocking according to claim 1, characterized in that: The action part (13) comprises a second fixed seat (131), and a clamp (132), a pull rod (133), a first linkage block (134), a second linkage block (135), and a third linkage block (136) arranged in the second fixed seat (131); The clamp (132) is sleeved on the outer wall of the second-stage telescopic tube (40); The first linkage block (134) and the second linkage block (135) are arranged on both sides of the clamp (132); The pull rod (133) is passed through the clamp (132) and its two ends are respectively connected to one end of the first linkage block (134) and one end of the second linkage block (135); Two ends of the third linkage block (136) are rotatably connected to the other end of the first linkage block (134) and the other end of the second linkage block (135) respectively; The linkage part (12) is connected to the first linkage block (134) or the second linkage block (135) so as to drive the two ends of the clamp (132) to approach each other through the first linkage block (134) or the second linkage block (135), so that the clamp (132) tightly holds the second-stage telescopic tube (40).

7. The quickly unlockable support leg according to claim 1, characterized in that: The telescopic tubes (40) are provided in two numbers, the inner tubes (50) are provided in two numbers, and the traction rope assembly (30) comprises a first fixed pulley (31), a second fixed pulley (32), a first traction rope (33) and a second traction rope (34); The first fixed pulley (31) is installed on the top of the first-stage telescopic tube (40); The second fixed pulley (32) is installed at the bottom of the second-stage inner tube (50); One end of the first traction rope (33) is connected to the bottom of the fixed tube (20), and the other end of the first traction rope (33) is wound around the second fixed pulley (32) and connected to the top of the second-stage telescopic tube (40); One end of the second traction rope (34) is connected to the top of the fixed tube (20), and the other end of the second traction rope (34) is wound around the first fixed pulley (31) and connected to the top of the second-stage telescopic tube (40).

8. The support foot capable of rapid unlocking according to claim 1, characterized in that: It also includes a gap adjustment component (60) connected between two adjacent telescopic tubes (40).

9. The support foot capable of rapid unlocking according to claim 8, characterized in that: The gap adjustment assembly (60) comprises an abutment ring (61), a locking sleeve (62) and a plurality of balls (63); the abutment ring (61) is arranged on the telescopic tube (40) at the rear stage; the locking sleeve (62) is sleeved on the outer side of the telescopic tube (40) and one end of the locking sleeve is connected to the telescopic tube (40) at the front stage and the other end is threadedly connected to the abutment ring (61); a third inclined surface (64) is arranged on the inner wall of the locking sleeve (62); a plurality of balls (63) are arranged between the telescopic tube (40) at the rear stage and the third inclined surface (64); the third inclined surface (64) can push the balls (63) to squeeze the balls (63) to press against the telescopic tube (40) at the rear stage when adjusting the relative position between the locking sleeve (62) and the abutment ring (61).

10. A support frame, characterized in that: Comprising the supporting foot according to any one of claims 1 to 9.

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