Novel foot tube locking structure, supporting foot and supporting frame

Abstract

The utility model discloses a novel foot tube locking structure, a supporting foot and a supporting frame, the locking structure comprises a first movable seat, a first cam sleeve and a first locking assembly, and further comprises a transmission shaft, and a first fixed tube and a second fixed tube which are respectively arranged on two sides of the transmission shaft; the first cam sleeve can drive the first locking assembly to enter a locking position when the transmission shaft rotates in the forward direction so as to limit relative movement between the first movable seat and the first fixed pipe and relative movement between the first movable seat and the second fixed pipe. Or the first cam sleeve can drive the first locking assembly to enter the unlocking position when the transmission shaft rotates reversely, so that the first movable seat can move relative to the first fixed pipe and the second fixed pipe; by means of the structure, the foot tube locking structure can be applied to the calandria type supporting frame, the unlocking and locking requirements of the calandria type supporting frame are met, and the good practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photographic equipment field, especially a novel foot pipe locking structure, support foot and support frame. BACKGROUND

[0002] Mobile phone and camera (or tablet computer, notebook computer etc.) are the equipment that people commonly use in daily life and work, in order to conveniently satisfy some user's use demand to the aspect of shooting, will use support frame to support shooting equipment when shooting, convenient for liberating user's both hands, in the existing support frame, its multistage foot pipe is the form of single pipe, three foot pipes are sequentially connected, and in the support frame of electric control unlocking and locking, motor drives transmission shaft rotation, and then locks every stage foot pipe through locking structure, but this structure cannot be applied to the row pipe type ground support frame, therefore, the novel foot pipe locking structure, support foot and support frame are urgently needed to solve the above problems. SUMMARY

[0003] The utility model aims at solving one of the technical problems existing in the prior art.

[0004] The technical scheme adopted by one embodiment of the utility model to solve the technical problem is as follows: a novel foot pipe locking structure, comprising a first movable seat, a first cam sleeve and a first locking assembly, further comprising a transmission shaft and first and second fixed pipes arranged on both sides of the transmission shaft;

[0005] The first movable seat is located between the first and second fixed pipes and movably arranged on the transmission shaft to move axially relative to the transmission shaft;

[0006] The first cam sleeve is sleeved on the transmission shaft, and the first cam sleeve rotates synchronously with the transmission shaft and can move axially relative to the transmission shaft;

[0007] The first locking assembly is arranged on the first movable seat and abuts against the first cam sleeve, and the first locking assembly has a locking position and an unlocking position;

[0008] The first cam sleeve can drive the first locking assembly to enter the locking position when the transmission shaft rotates forward, so as to limit the relative movement between the first movable seat and the first and second fixed pipes; or the first cam sleeve can drive the first locking assembly to enter the unlocking position when the transmission shaft rotates reversely, so that the first movable seat can move relative to the first and second fixed pipes.

[0009] As one of the preferred embodiments of the utility model, the first locking assembly comprises a pull sleeve, a pressing plate and a return member;

[0010] The pull sleeve is sleeved on the first cam sleeve;

[0011] The pressing plate is arranged on the first movable seat and connected with the pulling sleeve;

[0012] The two ends of the reset member are respectively in abutment with the pressing plate and the first movable seat;

[0013] When the first cam sleeve enters the locking position, the pulling sleeve can pull the pressing plate to abut against the first fixed tube and the second fixed tube, so as to limit the relative movement between the first movable seat and the first fixed tube and the second fixed tube; or when the first cam sleeve enters the unlocking position, the reset member can drive the pressing plate to separate from the first fixed tube and the second fixed tube, so that the first movable seat can move relative to the first fixed tube and the second fixed tube.

[0014] As one of the preferred embodiments of the utility model, the first locking assembly comprises a first pressing block arranged between one side of the first cam sleeve and the first fixed tube, and a second pressing block arranged between the other side of the first cam sleeve and the second fixed tube;

[0015] When the transmission shaft rotates in the forward direction, the first cam sleeve can push the first pressing block to abut against the first fixed tube and drive the second pressing block to abut against the second fixed tube, so as to limit the relative movement between the first movable seat and the first fixed tube and the second fixed tube; or when the transmission shaft rotates in the reverse direction, the first cam sleeve can release the pushing of the first pressing block and the second pressing block, so that the first movable seat can move relative to the first fixed tube and the second fixed tube.

[0016] As one of the preferred embodiments of the utility model, an adjusting assembly is arranged between the first movable seat and the first pressing block and the second pressing block, for locking the distance between the first pressing block and the second pressing block.

[0017] As one of the preferred embodiments of the utility model, the adjusting assembly comprises a first screw rod, a second screw rod, a first gear, a second gear and a limiting plate;

[0018] One end of the first screw rod is threadedly connected with the first pressing block, and one end of the second screw rod is threadedly connected with the second pressing block;

[0019] The first gear is arranged on the other end of the first screw rod, and the second gear is arranged on the other end of the second screw rod;

[0020] The limiting plate is arranged on the first movable seat and connected with the first gear and the second gear, and the first gear and the second gear can slide transversely relative to the limiting plate;

[0021] When the limiting plate is arranged on the first movable seat, the limiting plate can be connected with the first gear and the second gear, so as to limit the rotation of the first gear and the second gear; or when the limiting plate is separated from the first movable seat, the first gear and the second gear can rotate, so as to respectively adjust the distance between the first pressing block and the first fixed tube and the distance between the second pressing block and the second fixed tube.

[0022] As one of the preferred embodiments of the utility model, the first movable seat is provided with a manual switch connected with the transmission shaft.

[0023] A support foot comprises a first telescopic pipe group, a second telescopic pipe group, a fixed seat, a second movable seat, a second locking assembly and the locking structure, the first fixed pipe and the second fixed pipe constitute a fixed pipe group;

[0024] The fixed seat is arranged at the end of the fixed pipe group;

[0025] The first movable seat is axially movably arranged on the fixed pipe group and above the fixed seat;

[0026] The second movable seat is arranged below the fixed seat;

[0027] The first telescopic pipe group is connected with the first movable seat at the first end and is arranged through the fixed seat at the end and is connected with the second movable seat;

[0028] The second telescopic pipe group is axially movably arranged on the first telescopic pipe group;

[0029] The second locking assembly is arranged on the second movable seat and has a locking position and an unlocking position;

[0030] One end of the transmission shaft is rotatably connected with the first movable seat, and the other end is arranged through the fixed seat and is connected with the second locking assembly;

[0031] The transmission shaft can drive the first locking assembly and the second locking assembly to enter the locking position when rotating in the forward direction, so as to limit the movement between the first telescopic pipe group and the fixed pipe group and limit the movement between the second telescopic pipe group and the first telescopic pipe group respectively; or the transmission shaft can drive the first locking assembly and the second locking assembly to enter the unlocking position when rotating in the reverse direction, so that the first telescopic pipe group can move relative to the fixed pipe group and the second telescopic pipe group can move relative to the first telescopic pipe group.

[0032] As one of the preferred embodiments of the utility model, the second locking assembly comprises a first rotating shaft, a second rotating shaft, a third pressing block, a fourth pressing block and a second cam sleeve;

[0033] One end of the first rotating shaft and one end of the second rotating shaft are rotatably connected with the second movable seat;

[0034] One end of the third pressing block is connected with the other end of the first rotating shaft, and one end of the fourth pressing block is connected with the other end of the second rotating shaft;

[0035] The second cam sleeve abuts against the other end of the third pressing block and the other end of the fourth pressing block;

[0036] The second cam sleeve can drive the third pressing block to rotate around the first rotating shaft and the fourth pressing block to rotate around the second rotating shaft in the positive direction when the transmission shaft rotates in the positive direction, and abuts against the second telescopic pipe set, so as to limit the movement between the second movable seat and the second telescopic pipe set; or the second cam sleeve can drive the third pressing block to rotate around the first rotating shaft and the fourth pressing block to rotate around the second rotating shaft in the reverse direction when the transmission shaft rotates in the reverse direction, and separate from the second telescopic pipe set, so that the second movable seat can move relative to the second telescopic pipe set.

[0037] As one of the preferred embodiments of the utility model, a supporting leg further comprises a driving assembly connected with the transmission shaft, for driving the transmission shaft to rotate in the positive direction or in the reverse direction.

[0038] A supporting frame comprising the supporting leg.

[0039] The utility model discloses the beneficial effects of a novel foot pipe locking structure, a supporting leg and a supporting frame, the locking structure comprises a first movable seat, a first cam sleeve and a first locking assembly, further comprising a transmission shaft and first fixed pipe and second fixed pipe arranged on both sides of the transmission shaft, the first cam sleeve can drive the first locking assembly to enter the locking position when the transmission shaft rotates in the positive direction, so as to limit the relative movement between the first movable seat and the first fixed pipe and the second fixed pipe, or the first cam sleeve can drive the first locking assembly to enter the unlocking position when the transmission shaft rotates in the reverse direction, so that the first movable seat can move relative to the first fixed pipe and the second fixed pipe, through the above structure, the foot pipe locking structure can be applied to the row pipe type supporting frame, meet the unlocking demand of row pipe type supporting frame, have very good practicality. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0041] Figure 1 It is a kind of supporting frame in the structure schematic diagram of the state of being folded;

[0042] Figure 2 It is a kind of supporting frame in the structure schematic diagram of the state of being unfolded;

[0043] Figure 3 It is the first exploded view of a kind of supporting leg first embodiment in the state of being folded;

[0044] Figure 4 It is Figure 3 The local enlarged view of area A in it;

[0045] Figure 5 It is Figure 3 The local enlarged view of area B in it;

[0046] Figure 6Figure 2 is a second exploded view of the support foot in the collapsed state according to a first embodiment of the present application;

[0047] Figure 7 Figure 4 is a partial enlarged view of region C in Figure 2; Figure 6

[0048] Figure 8 Figure 5 is a first exploded view of the support foot in the collapsed state according to a second embodiment of the present application;

[0049] Figure 9 Figure 7 is a partial enlarged view of region D in Figure 5; Figure 8

[0050] Figure 10 Figure 8 is a second exploded view of the support foot in the collapsed state according to a second embodiment of the present application;

[0051] Figure 11 Figure 10 is a partial enlarged view of region E in Figure 8. Figure 10 DETAILED DESCRIPTION

[0052] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0053] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, within, etc. is included in the number. If there is a description of the first, 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 indicated technical features or implicitly indicating the sequence of indicated technical features.

[0054] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not indicative or implied that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0055] ​​​In the utility model, unless otherwise specifically limited, the words such as ''setting'', ''installing'', ''connecting'' should be understood in a broad sense, for example, it can be directly connected, also can be indirectly connected through intermediate medium, it can be fixedly connected, also can be detachably connected, can also be integrally formed, can be mechanically connected, can be the communication or mutual action relation of two elements inside two elements. The person skilled in the art in the technical field can combine the specific content of technical scheme to reasonably determine the specific meaning of the above words in the utility model.

[0056] 1) with reference to Figures 1-3 , 6, 8 and 10, in the utility model, with three support legs including three support legs and three support legs rotatably connected to three support legs as an example to explain, wherein each support leg includes fixed tube group 600, first telescopic tube group 100, second telescopic tube group 200, fixed seat 310, first movable seat 320, second movable seat 330, first locking assembly 400, second locking assembly 500 and transmission shaft 700, fixed seat 310 is installed at the end of fixed tube group 600, first movable seat 320 is axially movably arranged on fixed tube group 600 and is located above fixed seat 310, second movable seat 330 is arranged below fixed seat 310, the first end of first telescopic tube group 100 is connected with first movable seat 320, the end is arranged on fixed seat 310 and is connected with second movable seat 330, second telescopic tube group 200 is axially movably arranged on first telescopic tube group 100, second locking assembly 500 is arranged on second movable seat 330 and has locking position and unlocking position, one end of transmission shaft 700 is rotatably connected with first movable seat 320, the other end is arranged on fixed seat 310 and is connected with second locking assembly 500, further, first telescopic tube group 100 includes first foot pipe 110 and second foot pipe 120 arranged on both sides of transmission shaft 700, second telescopic tube group 200 includes third foot pipe 210 inserted into first foot pipe 110 and fourth foot pipe 220 inserted into second foot pipe 120.

[0057] Specifically, when the support leg needs to be unfolded, power is input through the driving assembly 900, and then the transmission shaft 700 is driven to rotate forward or reversely, when the transmission shaft 700 rotates forward, the first locking assembly 400 and the second locking assembly 500 will be driven to the locking position, and when the transmission shaft 700 reversely rotates, the first locking assembly 400 and the second locking assembly 500 will be driven to the unlocking position; when the first locking assembly 400 and the second locking assembly 500 are in the unlocking position, the restriction between the first telescopic pipe group 100 and the fixed pipe group 600 and between the second telescopic pipe group 200 and the first telescopic pipe group 100 will be respectively released, at this time, the first telescopic pipe group 100 can be unfolded or folded axially relative to the fixed pipe group 600, and the second telescopic pipe group 200 can be unfolded or folded axially relative to the first telescopic pipe group 100; when the first locking assembly 400 and the second locking assembly 500 are in the locking position, the movement between the first telescopic pipe group 100 and the fixed pipe group 600 and between the second telescopic pipe group 200 and the first telescopic pipe group 100 will be respectively limited, so as to realize the maintenance of the unfolded state or the maintenance of the folded state of the support frame.

[0058] 2) Refer to Figures 3-4 In some embodiments, the utility model provides a novel foot pipe locking structure, including first movable seat 320, first cam sleeve 710 and first locking assembly 400, first movable seat 320 is located between first fixed pipe 610 and second fixed pipe 620 and is movably arranged on transmission shaft 700, to relative transmission shaft 700 axial movement, first cam sleeve 710 is sleeved on transmission shaft 700, first cam sleeve 710 rotates with transmission shaft 700 and can relative transmission shaft 700 axial movement, first locking assembly 400 is arranged on first movable seat 320 and abuts with first cam sleeve 710, first locking assembly 400 has locking position and unlocking position.

[0059] Specifically, taking the unlocking of the fixed pipe group 600 and the first telescopic pipe group 100 as an example, when the transmission shaft 700 reversely rotates, the first cam sleeve 710 will be driven to rotate, and the first locking assembly 400 will enter the unlocking position under the action of the first cam sleeve 710 and release the restriction on the first telescopic pipe group 100, so that the first movable seat 320 can move relative to the first fixed pipe 610 and the second fixed pipe 620; when the transmission shaft 700 rotates forward, the first cam sleeve 710 will be driven to rotate, and the first locking assembly 400 will enter the locking position under the action of the first cam sleeve 710 and limit the relative movement between the first movable seat 320 and the first fixed pipe 610 and the second fixed pipe 620.

[0060] 3) Refer to Figures 3-4, as a first locking assembly 400, the first locking assembly 400 comprises a pull sleeve 410, a pressing plate 420 and a reset member 430; the pull sleeve 410 is sleeved on the first cam sleeve 710; the pressing plate 420 is arranged on the first movable seat 320 and connected with the pull sleeve 410; the two ends of the reset member 430 are respectively abutted with the pressing plate 420 and the first movable seat 320; the pull sleeve 410 can pull the pressing plate 420 to abut with the first fixed tube 610 and the second fixed tube 620 when the first cam sleeve 710 enters the locking position, so as to limit the relative movement between the first movable seat 320 and the first fixed tube 610 and the second fixed tube 620; or the reset member 430 can drive the pressing plate 420 to separate from the first fixed tube 610 and the second fixed tube 620 when the first cam sleeve 710 enters the unlocking position, so that the first movable seat 320 can move relative to the first fixed tube 610 and the second fixed tube 620.

[0061] 4) with reference to Figures 8-9 , as a second embodiment of the first locking assembly 400, the first locking assembly 400 comprises a first pressing block 440 arranged between one side of the first cam sleeve 710 and the first fixed tube 610 and a second pressing block 450 arranged between the other side of the first cam sleeve 710 and the second fixed tube 620; the first cam sleeve 710 can push the first pressing block 440 to abut with the first fixed tube 610 and drive the second pressing block 450 to abut with the second fixed tube 620 when the transmission shaft 700 rotates forward, so as to limit the relative movement between the first movable seat 320 and the first fixed tube 610 and the second fixed tube 620; or the first cam sleeve 710 can release the pushing of the first pressing block 440 and the second pressing block 450 when the transmission shaft 700 rotates reversely, so that the first movable seat 320 can move relative to the first fixed tube 610 and the second fixed tube 620.

[0062] 5) with reference to Figures 8-9 , in some embodiments, an adjusting assembly 800 is arranged between the first movable seat 320 and the first pressing block 440 and the second pressing block 450, for locking distance of the first pressing block 440 and the second pressing block 450; as a preferred embodiment of the adjusting assembly 800, the adjusting assembly 800 comprises a first screw rod 810, a second screw rod 820, a first gear 830, a second gear 840 and a limiting plate 850; one end of the first screw rod 810 is threadedly connected with the first pressing block 440, and one end of the second screw rod 820 is threadedly connected with the second pressing block 450; the first gear 830 is arranged on the other end of the first screw rod 810, and the second gear 840 is arranged on the other end of the second screw rod 820; the limiting plate 850 is arranged on the first movable seat 320 and connected with the first gear 830 and the second gear 840, and the first gear 830 and the second gear 840 can slide transversely relative to the limiting plate 850.

[0063] Specifically, when the limiting plate 850 is installed on the first movable seat 320, the first limiting slot 851 and the second limiting slot 852 on the limiting plate 850 can limit the rotation of the first gear 830 and the second gear 840 respectively, while allowing the first gear 830 and the second gear 840 to slide horizontally, i.e. without affecting the horizontal sliding of the first pressing block 440 and the second pressing block 450; when it is necessary to adjust the locking degree between the first pressing block 440 and the first fixed tube 610 and between the second pressing block 450 and the second fixed tube 620, the limiting plate 850 is removed, and the first gear 830 and the second gear 840 are rotated to drive the first screw rod 810 to rotate relative to the first pressing block 440 and the second screw rod 820 to rotate relative to the second pressing block 450, so that the distance between the first pressing block 440 and the first fixed tube 610 and between the second pressing block 450 and the second fixed tube 620 increases or decreases, while the distance that the first cam sleeve 720 can push the first pressing block 440 and the second pressing block 450 is fixed. When the distance between the first pressing block 440 and the first fixed tube 610 and between the second pressing block 450 and the second fixed tube 620 increases, the locking degree between the pressing block and the fixed tube will increase, and vice versa.

[0064] 6) Refer to 1- Figure 4 、 Figure 6 and Figures 8-11 In some embodiments, a manual switch 720 connected with the transmission shaft 700 is arranged on the first movable seat 320; the manual switch 720 serves as a backup unlocking and locking switch, which can manually unlock and lock the support frame when the driving assembly 900 fails; it should be noted that when the driving assembly 900 is working normally, the manual switch 720 will rotate synchronously with the transmission shaft 700.

[0065] 7) Refer to Figures 10-11 As a first embodiment of the second locking assembly 500, the second locking assembly 500 includes a first rotating shaft 510, a second rotating shaft 520, a third pressing block 530, a fourth pressing block 540, and a second cam sleeve 550; one end of the first rotating shaft 510 and one end of the second rotating shaft 520 are rotatably connected with the second movable seat 330; one end of the third pressing block 530 is connected with the other end of the first rotating shaft 510, and one end of the fourth pressing block 540 is connected with the other end of the second rotating shaft 520; the second cam sleeve 550 abuts against the other end of the third pressing block 530 and the other end of the fourth pressing block 540.

[0066] Specifically, the second cam sleeve 550 can drive the third pressing block 530 to rotate around the first rotating shaft 510 and the fourth pressing block 540 to rotate around the second rotating shaft 520 in the positive direction and abut against the second telescopic pipe set 200 when the transmission shaft 700 rotates in the positive direction, so as to limit the movement between the second movable seat 330 and the second telescopic pipe set 200; or the second cam sleeve 550 can drive the third pressing block 530 to rotate around the first rotating shaft 510 and the fourth pressing block 540 to rotate around the second rotating shaft 520 in the reverse direction and separate from the second telescopic pipe set 200 when the transmission shaft 700 rotates in the reverse direction, so that the second movable seat 330 can move relative to the second telescopic pipe set 200.

[0067] 8) Refer to Figures 3-4 The other end of the transmission shaft 700 is sleeved with a third cam sleeve 590, and the second locking assembly 500 includes a second pulling sleeve 560, a second pressing plate 570 and a second reset member 580 as a second embodiment of the second locking assembly 500; the second pulling sleeve 560 is sleeved on the third cam sleeve 590; the second pressing plate 570 is arranged on the second movable seat 330 and connected with the second pulling sleeve 560; the two ends of the second reset member 580 abut against the second pressing plate 570 and the second movable seat 330 respectively; the second pulling sleeve 560 can pull the second pressing plate 570 to abut against the third leg pipe 210 and the fourth leg pipe 220 when the third cam sleeve 590 enters the locking position, so as to limit the relative movement between the second movable seat 330 and the third leg pipe 210 and the fourth leg pipe 220; or the second reset member 580 can drive the second pressing plate 570 to separate from the third leg pipe 210 and the fourth leg pipe 220 when the third cam sleeve 590 enters the unlocking position, so that the second movable seat 330 can move relative to the third leg pipe 210 and the fourth leg pipe 220.

[0068] 9) Refer to Figures 1-2 and Figures 6-7 In some embodiments, a supporting leg further includes a driving assembly 900 connected with the transmission shaft 700 for driving the transmission shaft 700 to rotate in the positive direction or in the reverse direction; the driving assembly 900 includes a hydraulic cylinder 910, a piston rod 920, a first pipe 930, a second pipe and a hydraulic driving mechanism 940 as a preferred embodiment of the driving assembly 900; the hydraulic cylinder 910 is fixedly arranged in the fixed seat 310, one end of the piston rod 920 is provided with a rack 950 and the other end is inserted into the hydraulic cylinder 910, so that the inner cavity of the hydraulic cylinder 910 is divided into a first hydraulic cavity and a second hydraulic cavity; the other end of the transmission shaft 700 is provided with a gear 960 engaged with the rack 950; one end of the first pipe 930 communicates with the first hydraulic cavity, one end of the second pipe communicates with the second hydraulic cavity, and the first pipe 930 and the second pipe are filled with a hydraulic medium; the hydraulic driving mechanism 940 communicates with the other end of the first pipe 930 and the other end of the second pipe.

[0069] Specifically, when the hydraulic drive mechanism 940 is operated into the first state, the hydraulic medium will enter the first hydraulic cavity along the first pipeline 930, the hydraulic medium in the first hydraulic cavity is increased, and part of the hydraulic medium in the second hydraulic cavity is discharged through the second pipeline, thereby driving the piston rod 920 to move, so that the piston rod 920 drives the rack 950 to move in the horizontal direction, and finally drives the transmission shaft 700 to rotate forward through the gear 960, realizing the support frame to maintain the unfolded state or the folded state; when the hydraulic drive mechanism 940 is operated into the second state, the hydraulic medium will enter the second hydraulic cavity along the second pipeline, the hydraulic medium in the second hydraulic cavity is increased, and part of the hydraulic medium in the first hydraulic cavity is discharged through the first pipeline 930, thereby driving the piston rod 920 to move, so that the piston rod 920 drives the rack 950 to move in the horizontal direction, and finally drives the transmission shaft 700 to rotate reversely through the gear 960, at this time, the support frame can be unfolded or folded; it should be noted that the hydraulic cylinder 910 is connected with the fixed seat 310 through the guide structure, so that the hydraulic cylinder 910 is prevented from rotating; and the three groups of drive assemblies 900 on the three supporting legs share the same set of hydraulic drive mechanism 940, so that the three supporting legs can be unlocked or locked by one key.

[0070] 10) The utility model discloses the advantage lies in: through above -mentioned structure makes the foot pipe locking structure can be applied to the row pipe type support frame, satisfies the row pipe type support frame's unblocking locking demand, has very good practicality.

[0071] Of course, the utility model is not limited to the above-mentioned embodiment, and those skilled in the art can make equivalent transformation or replacement without departing from the spirit of the utility model, and the equivalent transformation and replacement are all included in the range defined by the claims of the present application.

Claims

1. A new foot tube locking structure, characterized by: The first movable seat (320), the first cam sleeve (710) and the first locking assembly (400) are included, and the transmission shaft (700) and the first fixed tube (610) and the second fixed tube (620) arranged on both sides of the transmission shaft (700) are further included; The first movable seat (320) is located between the first fixed tube (610) and the second fixed tube (620) and is movably arranged on the transmission shaft (700) to move axially relative to the transmission shaft (700); The first cam sleeve (710) is sleeved on the transmission shaft (700), and the first cam sleeve (710) rotates synchronously with the transmission shaft (700) and can move axially relative to the transmission shaft (700); The first locking assembly (400) is arranged on the first movable seat (320) and abuts against the first cam sleeve (710), and the first locking assembly (400) has a locking position and an unlocking position; The first cam sleeve (710) can drive the first locking assembly (400) to enter the locking position when the transmission shaft (700) rotates in a forward direction, so as to limit the relative movement between the first movable seat (320) and the first fixed tube (610) and the second fixed tube (620); or the first cam sleeve (710) can drive the first locking assembly (400) to enter the unlocking position when the transmission shaft (700) rotates in a reverse direction, so that the first movable seat (320) can move relative to the first fixed tube (610) and the second fixed tube (620).

2. A new type of foot tube locking structure according to claim 1, characterized in that: The first locking assembly (400) includes a pull sleeve (410), a pressing plate (420) and a reset member (430); The pull sleeve (410) is sleeved on the first cam sleeve (710); The pressing plate (420) is arranged on the first movable seat (320) and connected with the pull sleeve (410); The two ends of the reset member (430) abut against the pressing plate (420) and the first movable seat (320) respectively; The pull sleeve (410) can pull the pressing plate (420) to abut against the first fixed tube (610) and the second fixed tube (620) when the first cam sleeve (710) enters the locking position, so as to limit the relative movement between the first movable seat (320) and the first fixed tube (610) and the second fixed tube (620); or the reset member (430) can drive the pressing plate (420) to separate from the first fixed tube (610) and the second fixed tube (620) when the first cam sleeve (710) enters the unlocking position, so that the first movable seat (320) can move relative to the first fixed tube (610) and the second fixed tube (620).

3. A new type of foot tube locking structure according to claim 1, characterized in that: The first locking assembly (400) includes a first pressing block (440) arranged between one side of the first cam sleeve (710) and the first fixed tube (610) and a second pressing block (450) arranged between the other side of the first cam sleeve (710) and the second fixed tube (620). The first cam sleeve (710) can push the first pressing block (440) and the second pressing block (450) to abut against the first fixed tube (610) and the second fixed tube (620) when the transmission shaft (700) rotates in the forward direction, so as to limit the relative movement between the first movable seat (320) and the first fixed tube (610) and the second fixed tube (620); or the first cam sleeve (710) can release the pushing of the first pressing block (440) and the second pressing block (450) when the transmission shaft (700) rotates in the reverse direction, so that the first movable seat (320) can move relative to the first fixed tube (610) and the second fixed tube (620).

4. The novel foot tube locking structure according to claim 3, characterized in that: An adjusting assembly (800) is arranged between the first movable seat (320) and the first pressing block (440) and the second pressing block (450), and is used for locking the distance between the first pressing block (440) and the second pressing block (450).

5. The novel foot tube locking structure according to claim 4, characterized in that: The adjusting assembly (800) comprises a first screw rod (810), a second screw rod (820), a first gear (830), a second gear (840) and a limiting plate (850). One end of the first screw rod (810) is threadedly connected with the first pressing block (440), and one end of the second screw rod (820) is threadedly connected with the second pressing block (450). The first gear (830) is arranged on the other end of the first screw rod (810), and the second gear (840) is arranged on the other end of the second screw rod (820). The limiting plate (850) is arranged on the first movable seat (320) and is connected with the first gear (830) and the second gear (840), and the first gear (830) and the second gear (840) can slide transversely relative to the limiting plate (850). The limiting plate (850) can be connected with the first gear (830) and the second gear (840) when being arranged on the first movable seat (320), so as to limit the rotation of the first gear (830) and the second gear (840). Or The first gear (830) and the second gear (840) can rotate when the limiting plate (850) is separated from the first movable seat (320), so as to respectively adjust the distance between the first pressing block (440) and the first fixed tube (610) and the distance between the second pressing block (450) and the second fixed tube (620).

6. A new type of foot tube locking structure according to claim 1, characterized in that: A manual switch (720) connected with the transmission shaft (700) is arranged on the first movable seat (320).

7. A support foot characterised in that: The first telescopic tube group (100), the second telescopic tube group (200), the fixed seat (310), the second movable seat (330), the second locking assembly (500) and the locking structure of any one of claims 1-6 are included, and the first fixed tube (610) and the second fixed tube (620) constitute a fixed tube group (600). The fixed seat (310) is arranged at the end of the fixed tube group (600). The first movable seat (320) is axially movably arranged on the fixed tube set (600) and above the fixed seat (310); The second movable seat (330) is arranged below the fixed seat (310); The first telescopic tube set (100) is connected to the first movable seat (320) at a first end and is arranged through the fixed seat (310) at a second end and is connected to the second movable seat (330); The second telescopic tube set (200) is axially movably arranged on the first telescopic tube set (100); The second locking assembly (500) is arranged on the second movable seat (330) and has a locking position and an unlocking position; One end of the transmission shaft (700) is rotatably connected to the first movable seat (320) and the other end is arranged through the fixed seat (310) and is connected to the second locking assembly (500); The transmission shaft (700) can drive the first locking assembly (400) and the second locking assembly (500) to enter the locking position when rotating in a forward direction, so as to limit the movement between the first telescopic tube set (100) and the fixed tube set (600) and limit the movement between the second telescopic tube set (200) and the first telescopic tube set (100), respectively; or the transmission shaft (700) can drive the first locking assembly (400) and the second locking assembly (500) to enter the unlocking position when rotating in a reverse direction, so that the first telescopic tube set (100) can move relative to the fixed tube set (600) and the second telescopic tube set (200) can move relative to the first telescopic tube set (100).

8. A support foot according to claim 7, characterised in that: The second locking assembly (500) comprises a first rotating shaft (510), a second rotating shaft (520), a third pressing block (530), a fourth pressing block (540), and a second cam sleeve (550); One end of the first rotating shaft (510) and one end of the second rotating shaft (520) are rotatably connected to the second movable seat (330); One end of the third pressing block (530) is connected to the other end of the first rotating shaft (510), and one end of the fourth pressing block (540) is connected to the other end of the second rotating shaft (520); The second cam sleeve (550) abuts against the other end of the third pressing block (530) and the other end of the fourth pressing block (540); The second cam sleeve (550) can drive the third pressing block (530) to rotate in a forward direction around the first rotating shaft (510) and the fourth pressing block (540) to rotate in a forward direction around the second rotating shaft (520) and abut against the second telescopic tube set (200) when the transmission shaft (700) rotates in a forward direction, so as to limit the movement between the second movable seat (330) and the second telescopic tube set (200); or The second cam sleeve (550) can drive the third pressing block (530) to rotate reversely around the first rotating shaft (510) and the fourth pressing block (540) to rotate reversely around the second rotating shaft (520) and separate from the second telescopic pipe group (200) when the transmission shaft (700) rotates reversely, so that the second movable seat (330) can move relative to the second telescopic pipe group (200).

9. A support foot according to claim 7, characterised in that: The drive assembly (900) connected with the transmission shaft (700) is further included for driving the transmission shaft (700) to rotate forwardly or reversely.

10. A support frame characterized by: The support foot according to any one of claims 7-9.

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