Linkage type locking mechanism for photography supporting device

Abstract

The linkage type locking mechanism for the photography supporting device comprises a first rod body, a first moving seat, a second rod body, a third rod body and a second fixing seat, a rotating locking mechanism is arranged in the first moving seat, and the rotating locking mechanism is used for achieving positioning of the first rod body and the first moving seat; a second locking mechanism linked with the rotary locking mechanism is arranged in the second fixing seat, and the second locking mechanism is used for positioning the third rod body and the second fixing seat. According to the linkage type locking mechanism for the photography supporting device, stretching and locking operation of the supporting legs can be conveniently achieved through operation of the rotating operation piece, the stability of the locking state is high, and the product structural strength is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photography and video auxiliary device technical field, concretely relates to a linkage type locking mechanism for photography support device. BACKGROUND

[0002] The tripod is a commonly used photography and video auxiliary device, and the conventional tripod structure generally has a telescopic support leg structure. In addition to the conventional sleeve type telescopic rod structure, some medium and large high-strength support devices use more complex telescopic support rod structures.

[0003] For the complex telescopic support rod structure in the medium and large tripod, a matched telescopic locking mechanism is needed to conveniently unlock and lock, and the internal structure needs to be compact and have strong locking force. The utility model is further designed and improved in this direction. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the utility model provides a linkage type locking mechanism for a photography support device. Through the operation of a rotating operating member, the telescopic and locking operation of the support leg can be conveniently realized, the locking state has high stability, and the product structure has high strength.

[0005] The utility model is solved through the following technical scheme.

[0006] The linkage locking mechanism for the photographic support device comprises a first rod body, a first movable seat arranged on the first rod body, a first fixed seat arranged on the lower part of the first rod body, a second rod body arranged on the first movable seat and extending downward, the second rod body extending downward from the first fixed seat and being provided with a second fixed seat, a third rod body arranged on the second fixed seat and extending downward, a rotating locking mechanism arranged in the first movable seat and used for positioning the first rod body and the first movable seat, a second locking mechanism arranged in the second fixed seat and linked with the rotating locking mechanism and used for positioning the third rod body and the second fixed seat, the rotating locking mechanism comprising a rotating knob connected with a pressing plate through an adjusting rod arranged in the first movable seat, the rotating knob being used for driving the pressing plate to press on the first rod body to realize locking, a lifting rod arranged in the first movable seat, one end of the lifting rod being rotatably fixed, the other end of the lifting rod being connected with a connecting rod, the lower end of the connecting rod being connected to the second locking mechanism, the lower part of the lifting rod being provided with a cam rotating synchronously with the adjusting rod, the cam being provided with a protruding part used for lifting the lifting rod, the second locking mechanism comprising a driving block and a locking block, the driving block and the locking block being matched with each other through a slope, so that the driving block can press the locking block on the third rod body to realize locking of the third rod body after the driving block is lifted by the connecting rod.

[0007] In the linkage locking mechanism, the rotating knob on the first movable seat is rotated by hand to drive the adjusting rod to rotate, the adjusting rod drives the pressing plate to move during the rotating process, the pressing plate can be pressed on the first rod body to realize locking when the pressing plate moves inward, the pressing plate can move outward to realize unlocking when the rotating knob is reversely rotated, and the length of the support device can be adjusted. Meanwhile, the cam is rotated during the rotating process of the adjusting rod, the protruding part on the cam lifts or lowers the lifting rod, the lifting rod is lifted to pull the connecting rod to move upward, the driving block is pressed by the slope to press the locking block, the locking block is pressed on the third rod body to realize locking, and vice versa, the lifting rod is lowered, the connecting rod is unlocked, and the linkage operation is very convenient.

[0008] In a preferred embodiment, the rotating knob is a one-letter type knob arranged on one side of the first movable seat, the rotating knob rotates synchronously with the adjusting rod, and the operation is convenient.

[0009] In a preferred embodiment, the end of the adjusting rod is threadedly connected with the pressing plate or a threaded sleeve of the pressing plate, the pressing plate can be moved and pressed on the first rod body by rotating the rotating knob.

[0010] In a preferred embodiment, the inner side of the threaded sleeve is provided with an elastic member for providing elastic force.

[0011] In a preferred embodiment, the first rod body is two symmetrically arranged rods, the second rod body is two symmetrically arranged rods arranged between the two first rod bodies, and the third rod body is one rod arranged between the two second rod bodies, so that the overall structure is stable and convenient to stretch and retract.

[0012] In a preferred embodiment, the third rod body is provided with a guide sliding sleeve, which can abut against the outer wall of the second rod body, so that the stretching and retracting movement is convenient.

[0013] In a preferred embodiment, the connecting rod is connected to the driving block after passing through the cavity of one second rod body.

[0014] In a preferred embodiment, the top of the two first rod bodies is provided with a mounting bracket for assembly.

[0015] In a preferred embodiment, the first moving seat is provided with through holes for the first rod body to pass through on both sides, and the lower part of the first moving seat is provided with an assembly hole for assembling the top end of the second rod body, and the first moving seat is provided with an assembly inner cavity for assembling the internal structure, so that the overall structure is compact after assembly.

[0016] In a preferred embodiment, the first moving seat is provided with a knob hole matched with the rotating knob, and the knob hole is provided with a limiting baffle for limiting the rotation angle.

[0017] Compared with the prior art, the utility model has the advantages that a linkage type locking mechanism for a photography supporting device is provided, the stretching and retracting and locking operation of the supporting leg can be conveniently realized through the operation of one rotating operating member, the stability of the locking state is high, and the product structure strength is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the photography supporting device in the utility model Figure 1 .

[0019] Figure 2 It is a perspective view of the photography supporting device in the utility model Figure 2 .

[0020] Figure 3 It is an enlarged view of area A in the utility model Figure 1 .

[0021] Figure 4 It is an enlarged view of area B in the utility model Figure 2 .

[0022] Figure 5 It is a sectional view of the first moving seat structure in the utility model

[0023] Figure 6 is a perspective view of the first mobile seat in the utility model Figure 1 .

[0024] Figure 7 is a perspective view of the first mobile seat in the utility model Figure 2 .

[0025] Figure 8 is a perspective view of the first mobile seat structure in the utility model.

[0026] Figure 9 is a perspective view of the bottom part mechanism of the photographing support device in the utility model.

[0027] Figure 10 is a perspective view of the internal structure of the first mobile seat in the utility model.

[0028] Figure 11 is a perspective view of the adjusting rod structure in the first mobile seat in the utility model.

[0029] Figure 12 is a perspective view of the photographing support device in the utility model. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0031] In the following embodiments, the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout, and the following embodiments described by referring to the drawings are exemplary and are only for explaining the utility model and cannot be understood as limiting the utility model.

[0032] In the description of the utility model, it is understood that the terms: center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms: first, second and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the shown technical features. In the description of the utility model, unless otherwise explicitly specified and limited, the terms: mounting, connection, connection and the like should be understood in a broad sense, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Referring to Figures 1 to 12The present invention relates to a linkage locking mechanism for a photographic support device, comprising a first rod 1, a movable first movable seat 4 on the first rod 1, and a first fixed seat 6 at the lower part of the first rod 1; a second rod 2 extending downward on the first movable seat 4, the lower part of the second rod 2 extending out from the first fixed seat 6 and having a second fixed seat 7; and a movable third rod 3 on the second fixed seat 7, the lower end of the third rod 3 extending downward through the first fixed seat 6 and the second fixed seat 7.

[0034] Specifically, in this application, the first movable seat 4 is provided with a rotation locking mechanism, which is used to position the first rod 1 and the first movable seat 4; the second fixed seat 7 is provided with a second locking mechanism that is linked to the rotation locking mechanism, which is used to position the third rod 3 and the second fixed seat 7.

[0035] As can be seen from the accompanying drawings, in this application, the rotating locking mechanism includes a rotating knob 41, which is connected to a pressure plate 42 via an adjusting rod 411 located in the first movable seat 4. Rotating the rotating knob 41 can cause the pressure plate 42 to press against the first rod body 1 to achieve locking. The first movable seat 4 also includes a lifting rod 45, one end of which is rotatably fixed, and the other end is connected to a connecting rod 451. The lower end of the connecting rod 451 is connected to the second locking mechanism. The lower part of the lifting rod 45 is equipped with a cam 455 that rotates synchronously with the adjusting rod 411. The cam 455 has a protrusion 456 for lifting the lifting rod 45.

[0036] Furthermore, as can be seen from the accompanying drawings, the second locking mechanism includes a driving block 452 and a locking block 453. The driving block 452 and the locking block 453 are engaged by an inclined surface, so that after the driving block 452 is lifted by the connecting rod 451, the locking block 453 can be pressed onto the third rod 3 to lock the third rod 3.

[0037] Furthermore, in this application, the first movable base 4 has through holes 48 on both sides for the first rod 1 to pass through, and the lower part of the first movable base 4 has an assembly hole 482 for assembling the top end of the second rod 2. The first movable base 4 has an assembly cavity 49 for assembling the internal structure, resulting in a compact overall structure after assembly. The first movable base 4 has a knob hole that matches the rotating knob 41, and the knob hole has a limiting stop 416 for limiting the rotation angle.

[0038] In the application, the rotating knob 41 is a one-shaped knob arranged on one side of the first moving seat 4, which rotates synchronously with the adjusting rod 411, and is convenient to operate.

[0039] In the application, the first rod body 1 is symmetrically arranged in two, the second rod body 2 is symmetrically arranged in two and arranged between the two first rod bodies 1, and the third rod body 3 is arranged between the two second rod bodies 2, so that the overall structure is stable and convenient to stretch and retract.

[0040] In the application, the top of the two first rod bodies 1 is provided with the mounting bracket 5, which is used for assembly. Figure 12 As shown in the three photographing supporting devices in the assembly shown in the figure, a tripod is formed.

[0041] As can be seen from the above description, in the linkage type locking mechanism in the application, when operating, the rotating knob 41 on the first moving seat 4 is rotated by hand, the adjusting rod 411 is driven to rotate, the adjusting rod 411 drives the pressing plate 42 to move during the rotation, the pressing plate 42 can be pressed on the first rod body 1 to realize locking when moving inward, and the pressing plate 42 can move outward to realize unlocking when reversely rotating, so that the lengthening or shortening of the supporting device can be operated.

[0042] As described above, the utility model provides a linkage type locking mechanism for a photographing supporting device, through the operation of one rotating operating part, the stretching and retracting and locking operation of the supporting leg can be conveniently realized, the stability of the locking state is high, and the product structure strength is high.

[0043] The protection scope of the utility model includes but is not limited to the above-mentioned embodiments, the protection scope of the utility model is subject to the claims, and any replacement, deformation, improvement of the technical personnel in the art to the present technology is easy to think of and falls into the protection scope of the utility model. The protection scope of the utility model includes but is not limited to the above-mentioned embodiments, the protection scope of the utility model is subject to the claims, and any replacement, deformation, improvement of the technical personnel in the art to the present technology is easy to think of and falls into the protection scope of the utility model.

Claims

1. A linkage locking mechanism for a photographic support device, comprising a first rod (1), a movable first moving seat (4) on the first rod (1), and a first fixed seat (6) at the lower part of the first rod (1). The first movable seat (4) is provided with a downwardly extending second rod (2), the lower part of which extends out from the first fixed seat (6) and is provided with a second fixed seat (7). The second fixed seat (7) is provided with a movable third rod (3), the lower end of which extends downward through the first fixed seat (6) and the second fixed seat (7); Its features are: The first movable seat (4) is provided with a rotation locking mechanism, which is used to position the first rod (1) and the first movable seat (4); The second fixed seat (7) is provided with a second locking mechanism that is linked to the rotation locking mechanism. The second locking mechanism is used to position the third rod (3) and the second fixed seat (7). The rotating locking mechanism includes a rotating knob (41), which is connected to the pressure plate (42) via an adjusting rod (411) provided in the first movable seat (4). By rotating the rotating knob (41), the pressure plate (42) can be driven to press against the first rod body (1) to achieve locking. The first movable seat (4) is also provided with a lifting rod (45). One end of the lifting rod (45) is rotatably fixed, and the other end is connected to a connecting rod (451). The lower end of the connecting rod (451) is connected to a second locking mechanism. The lower part of the lifting rod (45) is equipped with a cam (455) that rotates synchronously with the adjusting rod (411). The cam (455) is provided with a protrusion (456) for lifting the lifting rod (45). The second locking mechanism includes a drive block (452) and a locking block (453). The drive block (452) and the locking block (453) are engaged by an inclined surface, so that after the drive block (452) is lifted by the connecting rod (451), the locking block (453) can be pressed onto the third rod (3) to lock the third rod (3).

2. The linkage locking mechanism for a photographic support device according to claim 1, characterized in that, The rotary knob (41) is a single-line knob located on one side of the first movable seat (4), and the rotary knob (41) rotates synchronously with the adjusting rod (411).

3. The linkage locking mechanism for a photographic support device according to claim 2, characterized in that, The end of the adjusting rod (411) is threaded onto the pressure plate (42) or the threaded sleeve (421) of the pressure plate (42). The rotation of the rotating knob (41) can drive the pressure plate (42) to move and press on the first rod body (1).

4. The linkage locking mechanism for a photographic support device according to claim 3, characterized in that, The inner side of the threaded sleeve (421) is provided with an elastic element (412).

5. The linkage locking mechanism for a photographic support device according to any one of claims 1 to 4, characterized in that, The first rod (1) consists of two symmetrically arranged rods, the second rod (2) consists of two symmetrically arranged rods located between the two first rods (1), and the third rod (3) consists of one rod located between the two second rods (2).

6. The linkage locking mechanism for a photographic support device according to claim 5, characterized in that, The third rod (3) is provided with a guide sleeve (37).

7. The linkage locking mechanism for a photographic support device according to claim 5, characterized in that, The connecting rod (451) passes through the cavity of a second rod (2) and is connected to the drive block (452).

8. The linkage locking mechanism for a photographic support device according to claim 5, characterized in that, The top of the two first rods (1) is provided with mounting brackets (5).

9. The linkage locking mechanism for a photographic support device according to claim 5, characterized in that, The first movable seat (4) has through holes (48) on both sides for the first rod (1) to pass through, and the lower part of the first movable seat (4) has an assembly hole (482) for assembling the top end of the second rod (2). The first movable seat (4) has an assembly cavity (49).

10. The linkage locking mechanism for a photographic support device according to claim 5, characterized in that, The first movable seat (4) is provided with a knob hole that matches the rotating knob (41), and the knob hole is provided with a limiting stop (416).

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