Tripod connecting plate type stay mechanism

Abstract

The present application relates to a kind of tripod connecting sheet type stay pole mechanism, to solve the technical problems that the stay pole of existing similar products is less used strip connecting sheet structure form is hidden after folding, and the stay pole is less used eccentric one side folding and opening structure form.The outer diameter of the middle shaft tube of the mechanism is provided with at least one convex rib or groove strip, the inner side of the leg assembly is respectively provided with stay pole;Its key point is that the outer leg tube of the leg assembly is respectively provided with lock tube wrench cover at one end, one side of lock tube wrench cover is convex and provided with outer sleeve hinged seat, one end of stay pole is respectively fixed in the inner side of the outer leg tube of leg assembly through the hinged seat of lock tube wrench cover at lock tube wrench cover;The outer diameter of the connecting sleeve is provided with corresponding inner sleeve hinged seat, the other end of stay pole is respectively hinged and fixed to the convex end of the inner sleeve hinged seat of connecting sleeve, stay pole is eccentric helical shape opening and folding on one side, stay pole is respectively close to the gap between outer leg tube and outer leg tube on one side when folding.

Description

Technical Field

[0001] This invention relates to tripods, specifically a tripod connecting plate type support mechanism. Technical Background

[0002] A tripod generally consists of a main frame, three legs, and a head. Some tripods have multiple auxiliary legs and a central adjustable tube. They are mainly used to fix photographic equipment such as cameras and camcorders, as well as to adjust the angle and height of the equipment, or to be used as a support for products such as phone clips and selfie lights. Some existing tripods use a raised triangular structure for their central axis tube to improve stability during lifting and lowering, and to prevent rotation during use. Examples include Chinese patent publication number CN211502194U, published on September 15, 2020, entitled "A Triangular Central Axis and a Tripod with a Triangular Central Axis"; and Chinese patent publication number CN212987134U, published on April 16, 2021, entitled "A Tripod Structure and a Tripod Light." Some similar products use U-shaped steel wire struts to further improve stability when the tripod is open. However, the combination of the triangular central axis tube and struts in these products and similar products is rare. The struts rarely use strip-shaped connecting pieces to hide when folded, and they rarely use an eccentric folding and opening structure. This results in poor stability when the legs are open and a large space requirement when the legs are folded. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the purpose of this invention is to provide a tripod connecting plate type strut mechanism in the art, which solves the technical problems of existing similar products rarely using a strip connecting plate structure to hide the strut when it is folded up, and rarely using an eccentric structure for folding and opening the strut on one side, resulting in poor stability when the legs are open and large space occupation when the legs are folded up. The purpose of this invention is achieved through the following technical solution.

[0004] A tripod connecting plate type strut mechanism is provided. The outer diameter of the connecting member of the mechanism is provided with three support leg assemblies, one end of which is respectively hinged and fixed to the connecting member. That is, one end of the outer support leg tube of the support leg assembly is respectively hinged and fixed to the connecting member through a hinge sleeve. The center of the connecting member is provided with a central shaft tube that extends out of the bottom and is fixed to the connecting member. One side of the outer diameter of the central shaft tube is provided with at least one protruding rib or groove strip. The other end of the support leg assembly is provided with a strut. One end of the strut is respectively hinged and fixed to the inner side of the outer support leg tube of the support leg assembly. The other end of the strut is respectively hinged and fixed to the outer diameter of the connecting sleeve. The guide groove or guide rib on the inner side of the central hole of the connecting sleeve is correspondingly fitted into the protruding rib or groove strip of the central shaft tube and slides up and down. The key structural design features a locking wrench or foot kit at the other end of the outer leg tube of the support assembly. One side of the locking wrench or foot kit protrudes, and an outer hinge seat is provided on the top or inner side of this protrusion. One end of the support rod is fixed to the inner side of the outer leg tube of the support assembly via the outer hinge seat of the locking wrench or foot kit. The outer diameter of the connecting sleeve has a corresponding protruding inner hinge seat, and the other end of the support rod is hinged to one side of the protruding end of the inner hinge seat at the connecting sleeve. The support rod opens and closes in a unilateral eccentric spiral shape. When the support assembly closes, the support rods are positioned within the gap between the outer leg tubes. This structure, with its unilateral eccentric spiral opening and closing mechanism, facilitates the close-up positioning within the gap between the outer leg tubes. According to existing technology, the protruding rib or groove strip on one side of the outer diameter of the shaft tube can be omitted, but this would reduce its stability during use.

[0005] The support rod is a long strip-shaped connecting piece, which can be a metal or plastic connecting piece. The above is a specific structural embodiment of the support rod, facilitating the use of the embodiment with the connecting piece in a vertical position.

[0006] The connecting piece is vertically arranged and is hinged to the locking wrench of the support leg assembly and the inner hinge seat of the connecting sleeve by pins at both ends. This structural embodiment of the connecting piece effectively ensures that it is concealed when retracted, while also facilitating its production and assembly.

[0007] The connecting piece is arranged horizontally and is hinged and fixed to the locking sleeve of the support assembly and the inner hinge seat of the connecting sleeve via hooks or snaps at both ends. The above is another embodiment of the connecting piece structure, which only requires adjusting the connecting piece to a smaller width to meet the above requirements.

[0008] The cross-section of the outer leg tube of the support assembly is rectangular, trapezoidal, circular, or rhomboid. The shape of the tube of the support assembly is not limited to these shapes, and other shapes of tubes may also be used. The outer leg tube only needs to meet the requirement of allowing for the gap between the outer leg tubes after the support assembly is retracted, or the gap between the outer leg tubes after the support assembly is retracted can be achieved by the difference between the outer diameter of the outer leg tube and the outer diameter of the locking wrench.

[0009] The central tube is triangular with a raised outer diameter, and the central hole of the connecting sleeve is correspondingly prismatic. The inner hinge seat of the connecting sleeve is located on the raised portion corresponding to the outer diameter of the prismatic hole. The aforementioned triangular central tube structure improves its stability, prevents the mechanism from swaying in the open state, and improves the stability of the connecting sleeve's vertical movement. According to existing technology, it can also adopt the shape of a tube with a raised or irregular shape on one side.

[0010] The connecting sleeve has a centrally located circular hole in its prismatic hole, and arc-shaped protrusions are respectively provided between the prismatic sides of the triangular central tube corresponding to the circular hole. This irregularly shaped triangular central tube further enhances its strength, thereby increasing its service life.

[0011] The bottom end of the central tube is provided with a limiting block fixed to the central tube. During the upward movement of the central tube, the limiting block limits its position on the connector. The above structure facilitates the use of the limiting block to prevent the central tube from being pulled out from the top of the connector, or to prevent the connecting sleeve from sliding out of the central tube, thereby further improving the stability of the connecting sleeve.

[0012] One end of the connecting piece is provided with an upper anti-rotation groove at the connection point with the connecting sleeve, and the other end of the connecting piece is provided with a lower anti-rotation groove at the connection point with the outer hinge seat of the locking sleeve of the support leg assembly. The above structure can better limit the opening and closing of the connecting piece through the limiting structures at both ends of the connecting piece.

[0013] A locking wrench or locking button is provided on one side of the connecting sleeve on the outer diameter of the central shaft tube. The connecting sleeve is fixed to the central shaft tube by the locking wrench or locking button. The above structure facilitates fixing the connecting sleeve to a designated position on the central shaft tube by means of the locking wrench, thereby further improving the stability of the support assembly and the limiting block after they are opened. The locking wrench is designed so as not to interfere with the retraction of the support assembly of the mechanism.

[0014] The present invention has a reasonable structural design, good stability, wide application range, and diverse structural forms. In particular, the connecting piece used as a strut occupies little space when folded up. It is suitable for use as a tripod connecting piece type strut mechanism and is applicable to structural improvements of similar products. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the open state structure of an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 A schematic diagram of the collapsed structure.

[0017] Figure 3 yes Figure 2 The diagram shows a cross-sectional view, with a limiting block added.

[0018] Figure 4 yes Figure 2 A schematic diagram of the structure of one of the support components.

[0019] Figure 5 yes Figure 2 The diagram omits the internal structure of one support leg assembly and adds a locking wrench.

[0020] Figure 6 yes Figure 5 The diagram shows the omitted three-legged assembly and connector structure.

[0021] Figure 7 yes Figure 6 A top-down view of the structure in its open state; the central tube is omitted in the figure.

[0022] Figure 8 yes Figure 1 Schematic diagram of the improved structure at one end of the connecting piece Figure 1 .

[0023] Figure 9 yes Figure 1 Schematic diagram of the improved structure at one end of the connecting piece Figure 2 .

[0024] Attached figures and their names: 1. Connecting piece, 101. Hook, 102. Spring buckle, 2. Connecting sleeve, 201. Inner hinge seat, 3. Central shaft tube, 4. Support leg assembly, 401. Outer support leg tube, 402. Hinge sleeve, 403. Locking wrench, 4031. Outer hinge seat, 5. Connecting piece, 6. Limiting block, 7. Locking sleeve wrench. Implementation

[0025] The structure and use of the present invention will now be further described with reference to the accompanying drawings. Figures 1-7As shown, the outer diameter of the connecting member 5 of the mechanism is provided with three support leg assemblies 4, one end of which is respectively hinged and fixed to the connecting member. That is, one end of the outer support leg tube 401 of the support leg assembly is respectively hinged and fixed to the connecting member through the hinge sleeve 402. The center of the connecting member is provided with a central shaft tube 3 that extends out of the bottom and is fixed to the connecting member. The central shaft tube is triangular with a raised outer diameter. The inner side of the other end of the support leg assembly is provided with a connecting piece 1. The connecting piece is long and strip-shaped. The connecting piece is a metal connecting piece or a plastic connecting piece. One end of the connecting piece is respectively hinged and fixed to the inner side of the outer support leg tube of the support leg assembly. The other end of the connecting piece is respectively hinged and fixed to the outer diameter of the connecting sleeve 2. The prismatic hole of the connecting sleeve is correspondingly fitted into the central shaft tube and slides. Its specific structure is as follows: The other end of the outer leg tube of the above-mentioned support assembly is provided with a locking wrench 403. One side of the locking wrench protrudes, and the top of the protrusion is provided with an outer hinge seat 4031. One end of the connecting piece is fixed to the inner side of the outer leg tube of the support assembly through the outer hinge seat of the locking wrench. The outer diameter of the connecting sleeve is provided with an inner hinge seat 201 that protrudes corresponding to the internal prismatic hole. The other end of the connecting piece is hinged and fixed to one side of the protrusion of the inner hinge seat of the connecting sleeve. The connecting piece opens and closes in a one-sided eccentric spiral shape. When the support assembly is closed, the connecting pieces are close together in the gap between the outer leg tube and the outer leg tube on one side.

[0026] The aforementioned connecting piece is vertically positioned and hinged to the locking sleeve of the support assembly and the inner hinge seat of the connecting sleeve via pins at both ends. The outer support tube of the support assembly has a rectangular or trapezoidal cross-section, and the support assembly and the central shaft tube contain telescopic tubes of corresponding shapes. The center of the rhomboid hole of the connecting sleeve has a communicating circular hole, and the circular hole has an arc-shaped protrusion between the rhomboid sides corresponding to the outer diameter of the triangular central shaft tube.

[0027] When in use, open the support leg assembly, and the connecting sleeve of the central tube will move downward with the support leg assembly and open the connecting piece; close the open support leg assembly, and the connecting sleeve of the central tube will move upward with the support leg assembly and close the connecting piece, with the connecting piece respectively close to the gap on one side between the outer support leg tubes.

[0028] Based on the above structural characteristics, the mechanism can also be improved in the following ways: such as Figure 3 As shown, a limiting block 6 is fixed to the bottom end of the central tube, and the central tube is limited to the connecting piece by the limiting block during upward movement. Simultaneously, in the above structure, one end of the connecting piece has an upper anti-rotation groove at the connection point with the connecting sleeve, and the other end of the connecting piece has a lower anti-rotation groove at the connection point with the outer hinge seat of the locking wrench of the support leg assembly. This further limits the movement of the connecting piece when it is opened and closed. Figure 5 As shown, a locking wrench 7 or a locking button is provided on one side of the connecting sleeve on the outer diameter of the central shaft tube. The connecting sleeve is fixed to the central shaft tube by the locking wrench or the locking button. Figures 8-9 As shown, the connecting piece is arranged horizontally, and the connecting piece is hinged and fixed to the locking sleeve of the support assembly and the inner sleeve hinge seat of the connecting sleeve by the hooks 101 or spring buckles 102 at both ends, respectively.

Claims

1. A tripod connecting plate type strut mechanism, wherein the outer diameter of the connecting member (5) of the mechanism is provided with three support leg assemblies (4) with one end respectively hinged and fixed to the connecting member, that is, one end of the outer support leg tube (401) of the support leg assembly is respectively hinged and fixed to the connecting member through the hinge sleeve (402), the center of the connecting member is provided with a central shaft tube (3) extending out of the bottom and fixed to the connecting member, one side of the outer diameter of the central shaft tube is provided with at least one protruding rib or groove strip, the other end of the support leg assembly is provided with a strut, one end of the strut is respectively hinged and fixed to the inner side of the outer support leg tube of the support leg assembly, and the other end of the strut is respectively hinged and fixed to the outer diameter of the connecting sleeve (2), the guide groove or guide rib on the inner side of the central hole of the connecting sleeve is correspondingly fitted into the protruding rib or groove strip of the central shaft tube and slides up and down; characterized in that The other end of the outer leg tube (401) of the support assembly (4) is provided with a locking wrench (403). One side of the locking wrench protrudes, and the top or inner side of the protrusion is provided with an outer hinge seat (4031). One end of the support rod is fixed to the inner side of the outer leg tube of the support assembly through the outer hinge seat of the locking wrench. The outer diameter of the connecting sleeve (2) is provided with a corresponding protruding inner hinge seat (201). The other end of the support rod is hinged and fixed to one side of the protruding end of the inner hinge seat at the connecting sleeve. The support rod opens and closes in a one-sided eccentric spiral shape. When the support assembly closes, the support rod... They are respectively placed in the gap between the outer support tube and the outer support tube on one side; the central tube (3) is a triangular shape with a raised outer diameter, and the central hole of the connecting sleeve (2) is a corresponding prismatic hole. The outer diameter of the connecting sleeve is provided with an inner sleeve hinge seat (201) that is raised in accordance with the inner prismatic hole; the bottom end of the central tube (3) is provided with a limiting block (6) fixed to the central tube, and the central tube is limited to the connecting piece (5) by the limiting block during the upward movement process; a locking sleeve wrench (7) or a locking sleeve button is provided on one side of the connecting sleeve (2) on the outer diameter of the central tube (3), and the connecting sleeve is fixed to the central tube by the locking sleeve wrench or the locking sleeve button.

2. The tripod connecting plate type strut mechanism according to claim 1, characterized in that... The strut is a long strip-shaped connecting piece (1), which can be a metal connecting piece or a plastic connecting piece.

3. The tripod connecting plate type strut mechanism according to claim 2, characterized in that... The connecting piece (1) is vertically arranged, and the connecting piece is hinged and fixed to the locking wrench (403) of the support leg assembly (4) and the inner sleeve hinge seat (201) of the connecting sleeve (2) by the pins at both ends.

4. The tripod connecting plate type strut mechanism according to claim 2, characterized in that... The connecting piece (1) is arranged horizontally, and the connecting piece is hinged and fixed to the locking wrench (403) of the support leg assembly (4) and the inner sleeve hinge seat (201) of the connecting sleeve (2) through the hooks (101) or snaps (102) at both ends.

5. The tripod connecting plate type strut mechanism according to claim 2, characterized in that... The cross-section of the outer support tube (401) of the support assembly (4) is rectangular, trapezoidal, circular or rhomboid.

6. The tripod connecting plate type strut mechanism according to claim 1, characterized in that... The connecting sleeve (2) has a circular hole in the center of the prismatic hole, and the circular hole has an arc-shaped protrusion between the outer diameter prismatic sides of the triangular central tube (3).

7. The tripod connecting plate type strut mechanism according to claim 1, characterized in that... One end of the connecting piece (1) is provided with an upper anti-rotation groove at the connection point with the connecting sleeve (2), and the other end of the connecting piece is provided with a lower anti-rotation groove at the connection point with the outer hinge seat (4031) of the locking wrench glove (403) of the support leg assembly (4).

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