Supporting leg with quick unlocking and locking functions and supporting frame

Abstract

The utility model discloses a supporting leg with a quick unlocking and locking function and a supporting frame. A leg pipe comprises a fixed pipe set, a first telescopic pipe set, a second telescopic pipe set, a first installation base, a second installation base, a third installation base, a first locking assembly, a second locking assembly, a transmission shaft and a driving assembly. By means of the structure, simultaneous locking and simultaneous unlocking between the first telescopic pipe set and the fixed pipe set and between the second telescopic pipe set and the first telescopic pipe set can be achieved, then rapid folding and rapid unfolding of the supporting frame are achieved, the operation convenience and efficiency of the supporting frame are improved, and the use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to photographic equipment field, especially a support leg and support frame with quick locking and unlocking function. BACKGROUND

[0002] Mobile phone and camera (or tablet computer, notebook computer etc.) are common equipment in people's daily life and work, in order to conveniently satisfy some user's use demand to the aspect of shooting, support frame is used to support shooting equipment when shooting, and it is convenient for liberating user's both hands, support frame usually includes multiple support legs, and the support leg is telescopic, thereby adjusting the height of support frame, this telescopic support leg has three sections of leg pipe, and a set of locking mechanism is arranged between adjacent two sections of leg pipe, each set of locking mechanism has independent locking / unlocking switch, two sets of locking / unlocking switch are opened, and all leg pipes on the support leg are unfolded, six locking / unlocking switches are opened, and it is extremely inconvenient to use, therefore, it is urgent to have a support leg and support frame with quick locking and unlocking function to solve the above problems. SUMMARY

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

[0004] The utility model provides a support leg and support frame with quick locking and unlocking function.

[0005] The first mounting seat is installed at the end of the fixed pipe group.

[0006] The second mounting seat is axially movably arranged on the fixed pipe group and above the first mounting seat.

[0007] The third mounting seat is arranged below the first mounting seat.

[0008] The first telescopic pipe group is connected with the second mounting seat at the first end, and the second mounting seat is connected with the third mounting seat at the end.

[0009] The second telescopic pipe group is axially movably arranged on the first telescopic pipe group.

[0010] The first locking assembly is arranged on the second mounting seat and has a locking position and an unlocking position.

[0011] The second locking assembly is arranged on the third mounting seat and has a locking position and an unlocking position.

[0012] One end of the transmission shaft is connected with the first locking assembly, and the other end is arranged on the first mounting seat and connected with the second locking assembly;

[0013] The driving assembly is connected with the transmission shaft and used for driving the transmission shaft to rotate forward or reversely;

[0014] The transmission shaft can drive the first locking assembly and the second locking assembly to enter the locking position when rotating forward, 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 reversely, 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.

[0015] As one of the preferred embodiments of the utility model, the fixed pipe group comprises a first fixed pipe and a second fixed pipe arranged on the two sides of the first telescopic pipe group, and the first locking assembly comprises a transmission assembly, a first limiting push block and a second limiting push block;

[0016] The transmission assembly has an input end, a first output end and a second output end, and the input end is connected with one end of the transmission shaft;

[0017] The first limiting push block is arranged between the first telescopic pipe group and the first fixed pipe and connected with the first output end;

[0018] The second limiting push block is arranged between the first telescopic pipe group and the second fixed pipe and connected with the second output end;

[0019] The transmission shaft can drive the first limiting push block and the second limiting push block to move away from each other through the transmission assembly when rotating forward, so that the first limiting push block abuts against the first fixed pipe and the second limiting push block abuts against the second fixed pipe; or the transmission shaft can drive the first limiting push block and the second limiting push block to move towards each other through the transmission assembly when rotating reversely, so that the first limiting push block is separated from the first fixed pipe and the second limiting push block is separated from the second fixed pipe.

[0020] As one of the preferred embodiments of the utility model, the transmission assembly comprises a first bevel gear, a second bevel gear and a third bevel gear;

[0021] The first bevel gear is arranged on one end of the transmission shaft to constitute the input end;

[0022] The second bevel gear is arranged on the first limiting push block and engaged with the first bevel gear to constitute the first output end;

[0023] The third bevel gear is arranged on the second limiting push block and engaged with the first bevel gear to constitute the second output end.

[0024] As one of the preferred embodiments of the utility model, one end of the first limiting push block is connected with the first output end, and the other end of the first limiting push block is provided with a first arc-shaped groove matched with the first fixed pipe; one end of the second limiting push block is connected with the second output end, and the other end of the second limiting push block is provided with a second arc-shaped groove matched with the second fixed pipe.

[0025] As one of the preferred embodiments of the utility model, the first telescopic pipe group comprises a first foot pipe and a second foot pipe arranged on both sides of the transmission shaft, the second telescopic pipe group comprises a third foot pipe inserted into the first foot pipe and a fourth foot pipe inserted into the second foot pipe, and the second locking assembly comprises a movable seat, a first limiting sleeve and a second limiting sleeve;

[0026] The movable seat is screw-connected to the transmission shaft;

[0027] The first limiting sleeve is arranged on the movable seat, and the third foot pipe is arranged on the first limiting sleeve;

[0028] The second limiting sleeve is arranged on the movable seat, and the fourth foot pipe is arranged on the second limiting sleeve;

[0029] The movable seat can drive the first limiting sleeve and the second limiting sleeve to abut against the third mounting seat and deform when the transmission shaft rotates in the forward direction, so as to abut against the third foot pipe and the fourth foot pipe respectively; or the movable seat can drive the first limiting sleeve and the second limiting sleeve to separate from the third mounting seat and deform to recover when the transmission shaft rotates in the reverse direction, so as to separate from the third foot pipe and the fourth foot pipe respectively.

[0030] As one of the preferred embodiments of the utility model, the first limiting sleeve comprises a connecting portion and a plurality of clamping pieces arranged on the connecting portion in the circumferential direction, the connecting portion is connected with the movable seat, and a first inclined surface is arranged on the outer wall of the clamping piece; a second inclined surface matched with the first inclined surface is arranged on the third mounting seat.

[0031] As one of the preferred embodiments of the utility model, the driving assembly comprises a buckle, a first tooth portion arranged on the buckle, and a first gear connected with the transmission shaft, the first gear is engaged with the first tooth portion, the buckle can drive the transmission shaft to rotate in the forward direction through the first tooth portion and the first gear when the buckle is switched from the first position to the second position, or the buckle can drive the transmission shaft to rotate in the reverse direction through the first tooth portion and the first gear when the buckle is switched from the second position to the first position.

[0032] As one of the preferred embodiments of the utility model, the driving assembly comprises a hydraulic cylinder, a piston rod, a first pipeline, a second pipeline and a hydraulic driving mechanism;

[0033] The hydraulic cylinder is movably arranged in the first mounting seat, a rack is arranged on the outer wall of the hydraulic cylinder, and a second gear matched with the rack is arranged on the other end of the transmission shaft;

[0034] One end of the piston rod is connected with the first mounting base, and the other end of the piston rod is inserted into the hydraulic cylinder, so that the inner cavity of the hydraulic cylinder is divided into a first hydraulic cavity and a second hydraulic cavity;

[0035] One end of the first pipeline is communicated with the first hydraulic cavity, one end of the second pipeline is communicated with the second hydraulic cavity, and the first pipeline and the second pipeline are filled with hydraulic medium;

[0036] The hydraulic drive mechanism is communicated with the other end of the first pipeline and the other end of the second pipeline.

[0037] As one of the preferred embodiments of the utility model, the driving assembly comprises a motor, a third gear and a fourth gear, the motor is arranged on the first mounting base and connected with the third gear, and the fourth gear is connected with the other end of the transmission shaft and engaged with the third gear.

[0038] A support frame comprising the support leg.

[0039] The support leg and the support frame have the advantages that the foot pipe comprises a fixed pipe group, a first telescopic pipe group, a second telescopic pipe group, a first mounting base, a second mounting base, a third mounting base, a first locking assembly, a second locking assembly, a transmission shaft and a driving assembly; the first telescopic pipe group and the fixed pipe group and the second telescopic pipe group and the first telescopic pipe group can be simultaneously locked and unlocked, so that the support frame can be quickly folded and unfolded, the operation convenience and efficiency of the support frame are improved, and the use requirement is met. 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 structure schematic view of a support frame first embodiment in the folded state;

[0042] Figure 2 It is a structure schematic view of a support frame first embodiment in the unfolded state;

[0043] Figure 3 It is a first exploded view of part of the structure of a support frame first embodiment;

[0044] Figure 4 It is Figure 3 It is a local enlarged view of area A in the middle;

[0045] Figure 5 It is a first exploded view of part of the structure of a support frame first embodiment;

[0046] Figure 6 It is Figure 5A local enlarged view of the middle B region;

[0047] Figure 7 A sectional view of a first embodiment of a support frame;

[0048] Figure 8 A schematic view of a second embodiment of a support frame in a folded state;

[0049] Figure 9 An exploded view of a second embodiment of a support frame;

[0050] Figure 10 A Figure 9 A local enlarged view of the middle C region. DETAILED DESCRIPTION

[0051] 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 figures, 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.

[0052] 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, etc. is included in the number. If there is a description of the first, the second 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.

[0053] In the description of the present application, it is understood that the position description is involved, for example, the position or location relationship indicated by up, down, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, so it cannot be understood as a limitation on the present application.

[0054] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0055] 1) Refer to Figure 1 , 2And 8, in the utility model, taking the support frame including three cutting seats and three support legs rotatably connected to the three cutting seats as an example to be described, wherein each support leg includes a fixed pipe group 100, a first telescopic pipe group 200, a second telescopic pipe group 300, a first mounting seat 410, a second mounting seat 420, a third mounting seat 430, a first locking assembly 500, a second locking assembly 600, a transmission shaft 700 and a driving assembly 800; the first mounting seat 410 is arranged at the end of the fixed pipe group 100; the second mounting seat 420 is axially movably arranged on the fixed pipe group 100 and located above the first mounting seat 410; the third mounting seat 430 is arranged below the first mounting seat 410; the first end of the first telescopic pipe group 200 is connected with the second mounting seat 420, the last end is arranged on the first mounting seat 410 and connected with the third mounting seat 430; the second telescopic pipe group 300 is axially movably arranged on the first telescopic pipe group 200; the first locking assembly 500 is arranged on the second mounting seat 420 and has a locking position and an unlocking position; the second locking assembly 600 is arranged on the third mounting seat 430 and has a locking position and an unlocking position; one end of the transmission shaft 700 is connected with the first locking assembly 500, the other end is arranged on the first mounting seat 410 and connected with the second locking assembly 600; the driving assembly 800 is connected with the transmission shaft 700 and used for driving the transmission shaft 700 to rotate forward or reversely.

[0056] Specifically, when it is needed to deploy the support leg, power is input through the driving assembly 800, and then the transmission shaft 700 is driven to rotate forward or reversely, when the transmission shaft 700 rotates forward, the first locking assembly 500 and the second locking assembly 600 will be driven to enter the locking position, and when the transmission shaft 700 rotates reversely, the first locking assembly 500 and the second locking assembly 600 will be driven to enter the unlocking position; when the first locking assembly 500 and the second locking assembly 600 are in the unlocking position, the restriction between the first telescopic pipe group 200 and the fixed pipe group 100 and between the second telescopic pipe group 300 and the first telescopic pipe group 200 will be respectively released, at this time, the first telescopic pipe group 200 can be axially deployed or collapsed relative to the fixed pipe group 100, and the second telescopic pipe group 300 can be axially deployed or collapsed relative to the first telescopic pipe group 200; when the first locking assembly 500 and the second locking assembly 600 are in the locking position, the movement between the first telescopic pipe group 200 and the fixed pipe group 100 and between the second telescopic pipe group 300 and the first telescopic pipe group 200 will be respectively limited, the support frame deployment state is kept or the collapsed state is kept.

[0057] 2) Refer to Figures 3-4In some embodiments, the fixed pipe group 100 comprises a first fixed pipe 110 and a second fixed pipe 120 arranged on both sides of the first telescopic pipe group 200, and the first locking assembly 500 comprises a transmission assembly 510, a first limiting push block 520 and a second limiting push block 530; the transmission assembly 510 has an input end, a first output end and a second output end, and the input end is connected with one end of the transmission shaft 700; the first limiting push block 520 is arranged between the first telescopic pipe group 200 and the first fixed pipe 110 and is connected with the first output end; and the second limiting push block 530 is arranged between the first telescopic pipe group 200 and the second fixed pipe 120 and is connected with the second output end.

[0058] Specifically, when the driving assembly 800 outputs power to the transmission shaft 700, the transmission shaft 700 will rotate, and when the transmission shaft 700 rotates in the forward direction, the first limiting push block 520 and the second limiting push block 530 will be driven to move away from each other by the transmission assembly 510, forcing the first limiting push block 520 to abut against the first fixed pipe 110 and forcing the second limiting push block 530 to abut against the second fixed pipe 120, so that the second connecting seat 420 cannot move axially relative to the first fixed pipe 110 and the second fixed pipe 120, i.e., the first telescopic pipe group 200 cannot move axially relative to the fixed pipe group 100; when the transmission shaft 700 reverses rotation, the first limiting push block 520 and the second limiting push block 530 will be driven to move toward each other by the transmission assembly 510, forcing the first limiting push block 520 to separate from the first fixed pipe 110 and forcing the second limiting push block 530 to separate from the second fixed pipe 120, so that the second connecting seat 420 can move axially relative to the first fixed pipe 110 and the second fixed pipe 120, i.e., the first telescopic pipe group 200 can move axially relative to the fixed pipe group 100; it should be noted that the first limiting push block 520 and the second limiting push block 530 are connected with the second connecting seat 420 through a guide structure, so that the rotational movement of the first limiting push block 520 and the second limiting push block 530 is converted into linear movement in the horizontal direction.

[0059] 3) Refer to Figures 3-4 In some embodiments, the transmission assembly 510 comprises a first bevel gear 511, a second bevel gear 512 and a third bevel gear 513; the first bevel gear 511 is arranged on one end of the transmission shaft 700 to constitute the input end; the second bevel gear 512 is arranged on the first limiting push block 520 and meshes with the first bevel gear 511 to constitute the first output end; and the third bevel gear 513 is arranged on the second limiting push block 530 and meshes with the first bevel gear 511 to constitute the second output end; the cooperation of the first bevel gear 511, the second bevel gear 512 and the third bevel gear 513 can realize the switching of the forward rotation and the reverse rotation of the transmission shaft 700.

[0060] 4) Refer to Figures 3-4In some embodiments, one end of the first limiting push block 520 is connected with the first output end, and the other end of the first limiting push block 520 is provided with a first arc-shaped slot 521 matched with the first fixed tube 110; one end of the second limiting push block 530 is connected with the second output end, and the other end of the second limiting push block 530 is provided with a second arc-shaped slot 531 matched with the second fixed tube 120.

[0061] Specifically, through the cooperation between the first arc-shaped slot 521 and the first fixed tube 110 and the cooperation between the second arc-shaped slot 531 and the second fixed tube 120, better adhesion with the fixed tube can be achieved, and further, the first limiting push block 520 and the second limiting push block 530 are made of a material with a high friction coefficient, which is conducive to improving the locking effect.

[0062] 5) Refer to Figures 5-7 In some embodiments, the first telescopic tube group 200 includes the first leg tube 210 and the second leg tube 220 arranged on both sides of the transmission shaft 700, the second telescopic tube group 300 includes the third leg tube 310 inserted into the first leg tube 210 and the fourth leg tube 320 inserted into the second leg tube 220, and the second locking assembly 600 includes the movable seat 610, the first limiting sleeve 620, and the second limiting sleeve 630; the movable seat 610 is threadedly connected to the transmission shaft 700; the first limiting sleeve 620 is arranged on the movable seat 610, and the third leg tube 310 is inserted through the first limiting sleeve 620; the second limiting sleeve 630 is arranged on the movable seat 610, and the fourth leg tube 320 is inserted through the second limiting sleeve 630.

[0063] Specifically, when the driving assembly 800 outputs power to the transmission shaft 700, the transmission shaft 700 will rotate, and when the transmission shaft 700 rotates in the forward direction, the movable seat 610 will be driven to move upward, so that the first limiting sleeve 620 and the second limiting sleeve 630 on the movable seat 610 abut against the third mounting seat 430 and are deformed, so that the first limiting sleeve 620 tightly holds the third leg tube 310 and the second limiting sleeve 630 tightly holds the fourth leg tube 320, and at this time, the third leg tube 310 cannot move axially relative to the first leg tube 210 and the fourth leg tube 320 cannot move axially relative to the second leg tube 220; when the transmission shaft 700 rotates in the reverse direction, the movable seat 610 will be driven to move downward, so that the first limiting sleeve 620 and the second limiting sleeve 630 on the movable seat 610 are separated from the third mounting seat 430 and are deformed to recover, so that the first limiting sleeve 620 releases the tight holding of the third leg tube 310 and the second limiting sleeve 630 releases the tight holding of the fourth leg tube 320, and at this time, the third leg tube 310 can move axially relative to the first leg tube 210 and the fourth leg tube 320 can move axially relative to the second leg tube 220.

[0064] 6) Refer to Figures 5-7In some embodiments, the first limiting sleeve 620 comprises a connecting portion 621 and a plurality of clamping pieces 622 circumferentially arranged on the connecting portion 621, the connecting portion 621 is connected with the movable seat 610, the outer wall of the clamping pieces 622 is provided with a first inclined surface 623, the third mounting seat 430 is provided with a second inclined surface abutting against the first inclined surface 623; the plurality of clamping pieces 622 enclose a locking space, the third leg pipe 310 is arranged in the locking space, when the movable seat 610 moves upward, the clamping pieces 622 will be deformed inward under the cooperation of the first inclined surface and the second inclined surface, so as to reduce the locking space and realize the clamping of the third leg pipe 310; when the movable seat 610 moves downward, the first inclined surface is separated from the second inclined surface, the clamping pieces 622 lose the external force and restore the deformation, the locking space is increased, and the clamping of the third leg pipe 310 is released.

[0065] 7) With reference to Figures 1-4 and Figure 8 As a first embodiment of the driving assembly 800, the driving assembly 800 comprises a buckle 810a, a first tooth portion 820a arranged on the buckle 810a, and a first gear 830a connected with the transmission shaft 700, the first gear 830a is engaged with the first tooth portion 820a, the buckle 810a can drive the transmission shaft 700 to rotate forward through the first tooth portion 820a and the first gear 830a when the buckle 810a is switched from the first position to the second position, or the buckle 810a can drive the transmission shaft 700 to rotate reversely through the first tooth portion 820a and the first gear 830a when the buckle 810a is switched from the second position to the first position.

[0066] Specifically, when the buckle 910a is in the first position, the first locking assembly 500 and the second locking assembly 600 are in the unlocking position, when the buckle 910a is in the second position, the first locking assembly 500 and the second locking assembly 600 are in the locking position; when the buckle 910a is switched from the first position to the second position, the transmission shaft 700 will be driven to rotate forward through the first tooth portion 820a and the first gear 830a, so as to maintain the unfolded state or the folded state of the support frame, when the buckle 910a is switched from the second position to the first position, the transmission shaft 700 will be driven to rotate reversely through the first tooth portion 820a and the first gear 830a, at this time, the support frame can be unfolded or folded; this embodiment is manually operated.

[0067] 8) With reference to Figures 1-2 and Figures 5-7As the second embodiment of the driving assembly 800, the driving assembly 800 comprises a hydraulic cylinder 810b, a piston rod 820b, a first pipe 830b, a second pipe 840b and a hydraulic driving mechanism 850b; the hydraulic cylinder 810b is movably arranged in the first mounting base 410, and a rack 860b is arranged on the outer wall of the hydraulic cylinder 810b; a second gear 870b is arranged on the other end of the transmission shaft 700 and is engaged with the rack 860b; one end of the piston rod 820b is connected with the first mounting base 410, and the other end of the piston rod 820b is inserted into the hydraulic cylinder 810b, so that the inner cavity of the hydraulic cylinder 810b is divided into a first hydraulic cavity 811b and a second hydraulic cavity 812b; one end of the first pipe 830b is in communication with the first hydraulic cavity 811b, and one end of the second pipe 840b is in communication with the second hydraulic cavity 812b; the first pipe 830b and the second pipe 840b are filled with a hydraulic medium; the other end of the first pipe 830b and the other end of the second pipe 840b are in communication with the hydraulic driving mechanism 850b.

[0068] Specifically, when the hydraulic driving mechanism 850b is operated into the first state, the hydraulic medium will enter the first hydraulic cavity 811b along the first pipe 830b, so that the hydraulic medium in the first hydraulic cavity 811b increases, and part of the hydraulic medium in the second hydraulic cavity 812b is discharged through the second pipe 840b; since the piston rod 820b is not moved, the hydraulic cylinder 810b moves in the horizontal direction, and the rack 860b on the hydraulic cylinder 810b moves accordingly, so that the transmission shaft 700 is driven to rotate forward by the second gear 870b, thereby realizing the maintenance of the unfolded state or the maintenance of the folded state of the support frame; when the hydraulic driving mechanism 850b is operated into the second state, the hydraulic medium will enter the second hydraulic cavity 812b along the second pipe 840b, so that the hydraulic medium in the second hydraulic cavity 812b increases, and part of the hydraulic medium in the first hydraulic cavity 811b is discharged through the first pipe 830b; since the piston rod 820b is not moved, the hydraulic cylinder 810b moves in the horizontal direction, and the rack 860b on the hydraulic cylinder 810b moves accordingly, so that the transmission shaft 700 is driven to rotate reversely by the second gear 870b, and at this time, the support frame can be unfolded or folded; it should be noted that the hydraulic cylinder 810b is connected with the first mounting base 410 through a guide structure, so as to avoid the rotary motion of the hydraulic cylinder 810b; and the three groups of driving assemblies 800 on the three support legs share the same set of hydraulic driving mechanisms 850b, so as to realize the one-key unlocking of the three support legs.

[0069] 9) with reference to Figures 1-2 and Figures 8-10As the third embodiment of the driving assembly 800, the driving assembly 800 comprises a motor 810c, a third gear 820c and a fourth gear 830c, the motor 810c is arranged on the first mounting base 410 and connected with the third gear 820c, the fourth gear 830c is connected with the other end of the transmission shaft 700 and engaged with the third gear 820c.

[0070] Specifically, when the motor 810c receives the first signal, it will rotate forward, driving the third gear 820c connected therewith to rotate, and through the engagement of the third gear 820c and the fourth gear 830c, the transmission shaft 700 is driven to rotate forward, realizing the maintenance of the unfolded state or the maintenance of the folded state of the support frame; when the motor 810c receives the second signal, it will rotate reversely, driving the third gear 820c connected therewith to rotate, and through the engagement of the third gear 820c and the fourth gear 830c, the transmission shaft 700 is driven to rotate reversely, realizing the maintenance of the unfolded state or the maintenance of the folded state of the support frame, at this time, the support frame can be unfolded or folded; it should be noted that the three groups of driving assemblies 800 on the three support legs are connected to the same controller, and the controller simultaneously issues the first signal and the second signal to the three motors 810c, so that the one-key unlocking of the three support legs can be realized.

[0071] 10) It should be noted that the first embodiment of the driving assembly 800 can coexist with the second embodiment of the driving assembly 800 or the third embodiment of the driving assembly 800, and the first embodiment of the driving assembly 800 is used as a backup unlocking mechanism, that is, when the second embodiment of the driving assembly 800 or the third embodiment of the driving assembly 800 fails, the unlocking of the support frame can be realized through the first embodiment of the driving assembly 800.

[0072] 11) The utility model discloses the advantage lies in: through above-mentioned structure can realize the simultaneous locking and unlocking between first telescopic pipe group and fixed pipe group and between second telescopic pipe group and first telescopic pipe group, further realize the quick folding and quick unfolding of support frame, improve the operation convenience and efficiency of support frame, satisfy use demand.

[0073] 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 these equivalent transformations and replacements are all included in the range defined by the claims of the present application.

Claims

1. A support foot with a quick unlocking function, characterized in that: The fixed pipe group (100), the first telescopic pipe group (200), the second telescopic pipe group (300), the first mounting seat (410), the second mounting seat (420), the third mounting seat (430), the first locking assembly (500), the second locking assembly (600), the transmission shaft (700) and the driving assembly (800) are included. The first mounting seat (410) is arranged at the end of the fixed pipe group (100). The second mounting seat (420) is arranged on the fixed pipe group (100) and above the first mounting seat (410). The third mounting seat (430) is arranged below the first mounting seat (410). The first end of the first telescopic pipe group (200) is connected with the second mounting seat (420), the end is arranged in the first mounting seat (410) and connected with the third mounting seat (430). The second telescopic pipe group (300) is arranged on the first telescopic pipe group (200). The first locking assembly (500) is arranged on the second mounting seat (420) and has a locking position and an unlocking position. The second locking assembly (600) is arranged on the third mounting seat (430) and has a locking position and an unlocking position. One end of the transmission shaft (700) is connected with the first locking assembly (500), the other end is arranged in the first mounting seat (410) and connected with the second locking assembly (600). The driving assembly (800) is connected with the transmission shaft (700) and used for driving the transmission shaft (700) to rotate forward or reversely. When the transmission shaft (700) rotates forward, the first locking assembly (500) and the second locking assembly (600) are driven to enter the locking position, so as to limit the movement between the first telescopic pipe group (200) and the fixed pipe group (100) and the movement between the second telescopic pipe group (300) and the first telescopic pipe group (200); or when the transmission shaft (700) rotates reversely, the first locking assembly (500) and the second locking assembly (600) are driven to enter the unlocking position, so that the first telescopic pipe group (200) can move relative to the fixed pipe group (100) and the second telescopic pipe group (300) can move relative to the first telescopic pipe group (200).

2. The support foot with quick unlocking function according to claim 1, characterized in that: The fixed pipe group (100) includes the first fixed pipe (110) and the second fixed pipe (120) arranged on both sides of the first telescopic pipe group (200), and the first locking assembly (500) includes the transmission assembly (510), the first limiting push block (520) and the second limiting push block (530). The transmission assembly (510) has an input end, a first output end and a second output end, and the input end is connected with one end of the transmission shaft (700). The first limiting push block (520) is arranged between the first telescopic pipe group (200) and the first fixed pipe (110) and connected with the first output end. The second limiting push block (530) is arranged between the second telescopic pipe group (300) and the first telescopic pipe group (200) and connected with the second output end. The second limiting push block (530) is arranged between the first telescopic pipe group (200) and the second fixed pipe (120) and is connected with the second output end; The transmission shaft (700) can drive the first limiting push block (520) and the second limiting push block (530) to move away from each other when rotating in the forward direction through the transmission assembly (510), so that the first limiting push block (520) abuts against the first fixed pipe (110) and the second limiting push block (530) abuts against the second fixed pipe (120); or the transmission shaft (700) can drive the first limiting push block (520) and the second limiting push block (530) to move towards each other when rotating in the reverse direction through the transmission assembly (510), so that the first limiting push block (520) is separated from the first fixed pipe (110) and the second limiting push block (530) is separated from the second fixed pipe (120).

3. The support foot with quick release and lock function according to claim 2, characterized in that: The transmission assembly (510) comprises a first bevel gear (511), a second bevel gear (512) and a third bevel gear (513); The first bevel gear (511) is arranged on one end of the transmission shaft (700) to constitute the input end; The second bevel gear (512) is arranged on the first limiting push block (520) and is engaged with the first bevel gear (511) to constitute the first output end; The third bevel gear (513) is arranged on the second limiting push block (530) and is engaged with the first bevel gear (511) to constitute the second output end.

4. The support foot with quick release and lock function according to claim 2, characterized in that: One end of the first limiting push block (520) is connected with the first output end, and the other end of the first limiting push block (520) is provided with a first arc-shaped groove (521) matched with the first fixed pipe (110); one end of the second limiting push block (530) is connected with the second output end, and the other end of the second limiting push block (530) is provided with a second arc-shaped groove (531) matched with the second fixed pipe (120).

5. The support foot with quick release and lock function according to claim 1, characterized in that: The first telescopic pipe group (200) comprises a first foot pipe (210) and a second foot pipe (220) arranged on both sides of the transmission shaft (700), the second telescopic pipe group (300) comprises a third foot pipe (310) inserted into the first foot pipe (210) and a fourth foot pipe (320) inserted into the second foot pipe (220), and the second locking assembly (600) comprises a movable seat (610), a first limiting sleeve (620) and a second limiting sleeve (630); The movable seat (610) is threadedly connected to the transmission shaft (700); The first limiting sleeve (620) is arranged on the movable seat (610), and the third foot pipe (310) is inserted through the first limiting sleeve (620); The second limiting sleeve (630) is arranged on the movable seat (610), and the fourth foot pipe (320) is inserted through the second limiting sleeve (630); The movable seat (610) can drive the first limiting sleeve (620) and the second limiting sleeve (630) to abut against the third mounting seat (430) and deform when the transmission shaft (700) rotates forward, so as to abut against the third leg pipe (310) and the fourth leg pipe (320) respectively; or the movable seat (610) can drive the first limiting sleeve (620) and the second limiting sleeve (630) to separate from the third mounting seat (430) and deform to recover when the transmission shaft (700) rotates reversely, so as to separate from the third leg pipe (310) and the fourth leg pipe (320) respectively.

6. The support foot with quick release and lock function according to claim 5, characterized in that: The first limiting sleeve (620) comprises a connecting portion (621) and a plurality of clamping pieces (622) circumferentially arranged on the connecting portion (621), the connecting portion (621) is connected with the movable seat (610), and a first inclined surface (623) is arranged on the outer wall of the clamping piece (622), and a second inclined surface abutting against the first inclined surface (623) is arranged on the third mounting seat (430).

7. The support foot with quick release and lock function according to claim 1, characterized in that: The driving assembly (800) comprises a buckle (810a), a first tooth portion (820a) arranged on the buckle (810a), and a first gear (830a) connected with the transmission shaft (700), the first gear (830a) is engaged with the first tooth portion (820a), the buckle (810a) can drive the transmission shaft (700) to rotate forward through the first tooth portion (820a) and the first gear (830a) when being switched from a first position to a second position, or the buckle (810a) can drive the transmission shaft (700) to rotate reversely through the first tooth portion (820a) and the first gear (830a) when being switched from the second position to the first position.

8. The support foot with quick release and lock function according to claim 1, characterized in that: The driving assembly (800) comprises a hydraulic cylinder (810b), a piston rod (820b), a first pipeline (830b), a second pipeline (840b), and a hydraulic driving mechanism (850b). The hydraulic cylinder (810b) is movably arranged in the first mounting seat (410), a rack (860b) is arranged on the outer wall of the hydraulic cylinder (810b), and a second gear (870b) engaged with the rack (860b) is arranged on the other end of the transmission shaft (700). One end of the piston rod (820b) is connected with the first mounting seat (410), and the other end of the piston rod (820b) is inserted into the hydraulic cylinder (810b), so that the inner cavity of the hydraulic cylinder (810b) is divided into a first hydraulic cavity (811b) and a second hydraulic cavity (812b). One end of the first pipeline (830b) is in communication with the first hydraulic cavity (811b), one end of the second pipeline (840b) is in communication with the second hydraulic cavity (812b), and the first pipeline (830b) and the second pipeline (840b) are filled with a hydraulic medium. The hydraulic driving mechanism (850b) is in communication with the other end of the first pipeline (830b) and the other end of the second pipeline (840b).

9. The support foot with quick release and lock function according to claim 1, characterized in that: The driving assembly (800) comprises a motor (810c), a third gear (820c) and a fourth gear (830c), the motor (810c) is arranged on the first mounting seat (410) and connected with the third gear (820c), the fourth gear (830c) is connected with the other end of the transmission shaft (700) and engaged with the third gear (820c).

10. A support frame characterized by: A support foot according to any one of claims 1 to 9.

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