Photography stand

Abstract

This invention relates to a photographic support, comprising a tube assembly, a locking assembly, and a transmission assembly. The tube assembly includes a first branch tube, a second branch tube, and a third branch tube. The locking assembly includes a first locking mechanism and a second locking mechanism. The transmission assembly includes a first transmission chain and a second transmission chain. The first transmission chain is axially movable to drive a first rotating member to rotate. The first rotating member further drives the first locking mechanism and the second transmission chain to move. The movement of the second transmission chain simultaneously drives the second locking mechanism to move, thereby synchronously locking the relative positions of the multiple branch tubes or synchronously releasing the restriction on their relative positions. In this embodiment of the photographic support, the tube assembly can be extended or retracted axially. During the switching between the extended and retracted states, operating the first transmission chain can drive the locking assembly to synchronously lock the length of the tube assembly or synchronously unlock the tube assembly.

Description

Technical Field

[0001] This invention relates to the field of photographic accessories technology, and in particular to a photographic stand. Background Technology

[0002] To stabilize photographic equipment or other instruments for photography, videography, or operation, a camera support frame is typically used. Such camera supports generally consist of multiple telescopic support tubes, each containing several movable branch tubes. During use, the telescopic support tubes must be manually extended to the desired length, and the relative positions of each branch tube must be locked. Most telescopic support tubes have locking devices between every two branch tubes; for example, patent CN114526426A shows locking devices between each movable branch tube. Thus, each telescopic support tube may have two or more locking devices. Fixing the camera support frame requires operating multiple locking devices, which is inconvenient. Summary of the Invention

[0003] The present invention provides a camera stand to solve the problem of inconvenient locking of camera stands.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This invention provides a camera stand, the camera stand comprising:

[0006] The pipe assembly includes a first branch pipe, a second branch pipe, and a third branch pipe;

[0007] The locking assembly includes a first locking mechanism and a second locking mechanism. The first locking mechanism is disposed between the first branch pipe and the second branch pipe, and the second locking mechanism is disposed between the second branch pipe and the third branch pipe. The first locking mechanism includes a first rotating member and a first locking member. The first rotating member is rotatable to drive the first locking member to restrict the relative axial movement of the first branch pipe and the second branch pipe, or to release the restriction on the relative movement of the first branch pipe and the second branch pipe. The second locking mechanism includes a second rotating member and a second locking member. The second rotating member is rotatable to drive the second locking member to restrict the relative axial movement of the second branch pipe and the third branch pipe, or to release the restriction on the relative movement of the second branch pipe and the third branch pipe.

[0008] The transmission assembly includes a first transmission chain and a second transmission chain, wherein the first transmission chain is connected to the first rotating member, and the second transmission chain is connected to the first rotating member; the first transmission chain can drive the first rotating member to rotate, thereby causing the second transmission chain to drive the second rotating member to rotate.

[0009] In one embodiment, the first transmission chain is disposed axially within the first branch pipe, and the second transmission chain is disposed axially within the second branch pipe; the first transmission chain is provided with a first engaging groove, and the first rotating member is provided with a first engaging end; the first transmission chain is axially movable to drive the first rotating member to rotate, so that the first engaging end disengages from or enters the first engaging groove; the second transmission chain is provided with a second engaging groove, and the second rotating member is provided with a second engaging end; the second transmission chain is axially movable to drive the second rotating member to rotate, so that the second engaging end disengages from or enters the second engaging groove.

[0010] In one embodiment, when the first snap-fit ​​end disengages from the first snap-fit ​​groove, the first locking member moves away from the first branch pipe; when the first snap-fit ​​end enters the first snap-fit ​​groove, the first locking member locks the first branch pipe. When the second snap-fit ​​end disengages from the second snap-fit ​​groove, the second locking member moves away from the second branch pipe; when the second snap-fit ​​end enters the second snap-fit ​​groove, the second locking member locks the second branch pipe.

[0011] In one embodiment, the first transmission chain has a plurality of first locking slots, and the first rotating member is rotatable, so that the first locking end can be aligned with any of the first locking positions, and the first locking member locks the relative positions of the first branch pipe and the second branch pipe; the second transmission chain has a plurality of second locking positions, and the second rotating member is rotatable, so that the second locking end can be aligned with any of the second locking positions, and the second locking member locks the relative positions of the second branch pipe and the third branch pipe.

[0012] In one embodiment, the first locking mechanism further includes a first reset member, which can cause the first reset member to accumulate a reset force when the first latching end disengages from the first latching groove, and the first reset member can release the reset force, so that the first latching end has a tendency to enter the first latching groove; the second locking mechanism further includes a second reset member, which can cause the second reset member to accumulate a reset force when the second latching end disengages from the second latching groove, and the second reset member can release the reset force, so that the second latching end has a tendency to enter the second latching groove.

[0013] In one embodiment, the first transmission chain is a first rack, and the first rotating member has multiple teeth on the portion facing the first rack to mesh with the first rack. The first transmission chain can drive the first rotating member to rotate to disengage, so that the first transmission chain and the first rotating member can move relative to each other. The second transmission chain is a second rack, and the second rotating member has multiple teeth on the portion facing the second rack to mesh with the second rack. The second transmission chain can drive the second rotating member to rotate to disengage, so that the second transmission chain and the second rotating member can move relative to each other.

[0014] In one embodiment, the first rotating member is provided with a first connecting portion, and the first locking mechanism is connected to the first rotating member through the first connecting portion. When the first rotating member rotates, the first connecting portion can drive the first locking member to remain stationary in the axial direction of the pipe assembly and to move in the direction perpendicular to the axial direction, thereby moving closer to or away from the first branch pipe. The second rotating member is provided with a second connecting portion, and the second locking mechanism is connected to the second rotating member through the second connecting portion. When the second rotating member rotates, the second connecting portion can drive the second locking member to remain stationary in the axial direction of the pipe assembly and to move in the direction perpendicular to the axial direction, thereby moving closer to or away from the second branch pipe.

[0015] In one embodiment, the first connecting portion includes a first protrusion disposed on the first rotating member and a first movable member connected to the first locking member. The first movable member has a first slotted hole for the first protrusion to move. When the first rotating member rotates, the first protrusion can slide in the first slotted hole, so that the first locking member moves only in the axial direction perpendicular to the tube assembly. The second connecting portion includes a second protrusion disposed on the second rotating member and a second movable member connected to the second locking member. The second movable member has a second slotted hole for the second protrusion to move. When the second rotating member rotates, the second protrusion can slide in the second slotted hole, so that the second locking member moves only in the axial direction perpendicular to the tube assembly.

[0016] In one embodiment, the first rotating member is provided with a traction part, and the second transmission chain is connected to the first rotating member through the traction part. When the first rotating member rotates, the traction part can drive the second transmission chain to move in the axial direction of the tube assembly, and not move in the direction perpendicular to the axial direction.

[0017] In one embodiment, the traction part includes a third protrusion disposed on the first rotating member and a connector connected to the second transmission chain. The connector has a third strip-shaped hole for the third protrusion to move. When the first rotating member rotates, the third protrusion can slide in the third strip-shaped hole, so that the second transmission chain moves in the axial direction of the tube assembly and does not move in the direction perpendicular to the axial direction.

[0018] In one embodiment, the camera bracket further includes a drive assembly connected to the first transmission chain, the drive assembly being operable to move the first transmission chain in an axial direction.

[0019] In one embodiment, the drive assembly includes a drive member and a knob connected to the drive member. The knob can be rotated to drive the drive member to rotate, thereby driving the first transmission chain to move in the axial direction via the drive member.

[0020] In one embodiment, the knob is movably connected to the drive member. The knob has a protrusion, and the first branch pipe has a limiting groove that can limit the protrusion so that the knob cannot be rotated. A reset member is provided between the knob and the drive member. The knob can be pressed along the axial direction of the drive member's rotation to disengage the protrusion from the limiting groove, thereby allowing the knob to be rotated. At the same time, the reset member accumulates a reset force and can release the reset force, causing the protrusion to re-engage into the limiting groove.

[0021] As can be seen from the above technical solutions, the embodiments of the present invention have at least the following advantages and positive effects:

[0022] In the photographic support of this invention, the tube assembly can be extended or retracted along the axial direction. During the process of switching between the extended state and the retracted state, the first transmission chain can be operated to drive the locking assembly to lock the length of the tube assembly synchronously, or the first transmission chain can be operated to drive the locking assembly to unlock the tube assembly synchronously. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the camera bracket in a folded state according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the camera bracket in an unfolded state according to an embodiment of the present invention;

[0026] Figure 3 for Figure 2 A cross-sectional structural diagram and a magnified view of a camera support;

[0027] Figure 4 for Figure 2 The diagram shows the internal structure of the photographic support and a partially enlarged view.

[0028] Figure 5 for Figure 2 The diagram shows the internal structure and a partial magnified view of the camera support in another state.

[0029] Figure 6 for Figure 3 A magnified schematic diagram of the photographic support at point e shown;

[0030] Figure 7 for Figure 6 Schematic diagram of the exploded structure of the drive component.

[0031] The annotations in the attached figures are explained as follows:

[0032] Camera bracket - 100; Mounting base - 200; Tube assembly - 110; Locking assembly - 120; Transmission assembly - 130; Branch tube - 1100; Locking mechanism - 1200; Transmission chain - 1300; First branch tube - 1101; Second branch tube - 1102; Third branch tube - 1103; Base 1400; First base - 1401; Second base - 1402; Third base - 1403; First locking mechanism - 1210; Second locking mechanism - 1220; First rotating component - 1211; First locking component - 1212; Second rotating component - 1221; Second locking component - 1222 Rotating shaft - 1213; First connecting part - 1214; First protrusion - 1215; First moving part - 1216; First slot - 1217; First transmission chain - 1310; Second transmission chain - 1320; First rack - 1311; Second rack - 1321; Traction part - 1321; Third protrusion - 1218; First reset part - 1219; Connecting part - 1322; Third slot - 1323; Drive assembly - 1404; Drive part - 1405; Knob - 1406; Gear - 1406; Protrusion - 1407; Limiting groove - 1408; Return part - 1409 Detailed Implementation

[0033] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] refer to Figure 1 and Figure 2 The present invention provides a photography stand 100, one end of which is used to support a flat or uneven table or ground, and the end away from the table or ground can be used to install photography equipment. The photography stand 100 includes a tube assembly 110, which can be extended to a suitable length to support the photography equipment installed at the end of the photography stand 100 at a reasonable photography height.

[0037] It should be noted that, in addition to being used alone, the camera bracket 100 can also be used in conjunction with a mounting base. Multiple camera brackets 100 are rotatably connected to one end of the mounting base. The camera brackets 100 are used to support the camera on flat or uneven surfaces such as tabletops and floors. The mounting base is connected to the end of the camera brackets 100 away from the tabletop or floor. The mounting base is used to mount the shooting equipment via an adapter structure (such as a threaded shaft, threaded hole, quick-release mount, etc.) at its end. Multiple camera brackets 100 can unfold at a certain angle on the mounting base and continue to extend to increase the axial length of the camera brackets 100, thereby supporting the photographic equipment mounted at the end of the mounting base at a reasonable shooting height. Because the camera brackets 100 can extend and shorten, they can also be applied to other shooting scenarios requiring height adjustment.

[0038] refer to Figure 3The camera support 100 includes a tube assembly 110, a locking assembly 120, and a transmission assembly 130. The tube assembly 110 has multiple branch tubes 1100, which are movable relative to each other to adjust the camera support 100 to a suitable length. The locking assembly 120 includes multiple locking mechanisms 1200, with one locking mechanism 1200 between every two branch tubes 1100. Each locking mechanism 1200 can lock and restrict the relative movement between two adjacent branch tubes 1100, or release the restriction on the relative movement. The transmission assembly 130 includes multiple transmission chains 1300, with one transmission chain 1300 between every two locking mechanisms 1200. Manipulating one transmission chain 1300 can synchronously drive the other transmission chains 1300 and the locking mechanism 1200 to move, thereby synchronously restricting the relative movement between the multiple branch tubes 1100, or synchronously releasing the restriction on the relative movement. This can be understood as, in actual use, if it is necessary to move the camera bracket 100 from... Figure 1 The contraction state shown has been switched to Figure 2 In the extended state shown, first operate one set of transmission chains 1300 to drive the other transmission chains 1300 to move and unlock multiple sets of locking mechanisms 1200 so that multiple branch pipes 1100 can move relative to each other. After manually extending the pipe assembly to the preset length, operate one set of transmission chains 1300 again to drive multiple sets of locking mechanisms 1200 to lock synchronously and restrict the relative movement between multiple branch pipes 1100, so as to lock the length of the pipe assembly 110.

[0039] refer to Figure 3 The pipe assembly 110 includes a first branch pipe 1101, a second branch pipe 1102, and a third branch pipe 1103, i.e., the multi-section branch pipe 1100 mentioned above. The second branch pipe 1102 is sleeved inside the first branch pipe 1101, and the third branch pipe 1103 is sleeved inside the second branch pipe 1102. Each section of the branch pipe 1100 is provided with a seat 1400 fixedly connected to the branch pipe 1100 to connect the internal components of the pipe body. The first branch pipe 1101 is provided with a first seat 1401, the second branch pipe 1102 is provided with a second seat 1402, and the third branch pipe 1103 is provided with a third seat 1403. In other embodiments, the number of branch pipes 1100 may be four or even more.

[0040] The locking assembly 120 includes a first locking mechanism 1210 and a second locking mechanism 1220. The first locking mechanism 1210 is disposed between the first branch pipe 1101 and the second branch pipe 1102, and the second locking mechanism 1220 is disposed between the second branch pipe 1102 and the third branch pipe 1103. The first locking mechanism 1210 is fixed on the second seat 1402 to lock the relative position between the first branch pipe 1101 and the second branch pipe 1102, and the second locking mechanism 1220 is fixed on the third seat 1403 to lock the relative position between the second branch pipe 1102 and the third branch pipe 1103. The first locking mechanism 1210 includes a first rotating member 1211 and a first locking member 1212, and the second locking mechanism 1220 includes a second rotating member 1221 and a second locking member 1222. Since the first locking mechanism 1210 and the second locking mechanism 1220 have similar features, only the first locking mechanism 1210 will be described as an example. The first rotating member 1211 can rotate to drive the first locking member 1212 to restrict the relative axial movement of the first branch pipe 1101 and the second branch pipe 1102, or to release the restriction on the relative movement of the first branch pipe 1101 and the second branch pipe 1102. The first rotating member 1211 includes a rotating shaft 1213 connected to the first base 1401. The direction of the rotating shaft 1213 is perpendicular to the axial direction of the branch pipe 1100. Therefore, when the first rotating member 1211 rotates along the rotating shaft 1213, all points on it will be displaced not only in the axial direction of the branch pipe 1100, but also in the direction perpendicular to the axial direction.

[0041] refer to Figure 4 and Figure 5 , Figure 4 b and Figure 5Figure d shows the connection positions of the first rotating member 1211 and the first locking mechanism 1210 when the first rotating member 1211 rotates counterclockwise and clockwise, respectively. The first rotating member 1211 is provided with a first connecting part 1214. The first locking mechanism 1210 is connected to the first rotating member 1211 through the first connecting part 1214, so that when the first rotating member 1211 rotates, the first connecting part 1214 drives the first locking member 1212 to remain stationary in the axial direction of the branch pipe 1100, but to move in the direction perpendicular to the axial direction, that is, to move closer to or away from the side of the first branch pipe 1101. The first connecting portion 1214 includes a first protrusion 1215 on the first rotating member 1211 and a first moving member 1216 connected to the first locking member 1212. The first moving member 1216 has a first slotted hole 1217. When the first rotating member 1211 rotates, the first protrusion 1215 can slide in the first slotted hole 1217, allowing the first protrusion 1215 to move in an arc while keeping the first locking member 1212 moving only in a direction perpendicular to the axial direction of the branch pipe 1100. The first locking member 1212 is close to and abuts against the first branch pipe 1101 to prevent relative movement between the first branch pipe 1101 and the second branch pipe 1102. The first moving member 1216 passes through the second seat 1402 and is confined within the second seat 1402 to make the first moving member 1216 and the first locking member 1212 more stable. It is understood that in other embodiments, the first connecting portion 1214 may be omitted, and the first locking member 1212 may be fixedly connected to the first rotating member 1211, so that the first locking member 1212 moves in an arc towards or away from the first branch pipe 1101. In other embodiments, the first connecting portion 1214 may also be configured in other forms, such as providing a flexible chain on the first moving member 1216, and connecting the flexible chain with the first protrusion 1215.

[0042] Continue to refer to Figure 4 and Figure 5 The transmission assembly 130 includes a first transmission chain 1310 and a second transmission chain 1320. The first transmission chain 1310 can be understood as... Figure 4 and Figure 5 The strip structure located between the first seat 1401 and the second seat 1402, the second transmission chain 1320 can be understood as... Figure 4 and Figure 5 The strip structure located between the second body 1402 and the third body 1403, Figure 4The diagram illustrates that the first transmission chain 1310 and the second transmission chain 1320 are respectively configured as a first rack 1311 and a second rack 1321. The first rack 1311 is connected to the first rotating member 1211. The first rotating member 1211 has multiple teeth on the part facing the first rack 1311 to mesh with the first rack 1311. Similarly, the second rotating member 1221 has multiple teeth on the part facing the second rack 1321 to mesh with the second rack 1321. Thus, when the first rack 1311 and the second rack 1321 move axially, the first rotating member 1211 and the second rotating member 1221 can rotate respectively through meshing.

[0043] Figure 4 a and Figure 5 Figure c shows the connection positions of the first rotating member 1211 and the second transmission chain 1320 when the first rotating member 1211 rotates counterclockwise and clockwise, respectively. To enable the second transmission chain 1320 to move when the first transmission chain 1310 moves, the second transmission chain 1320 is also connected to the first rotating member 1211. The first transmission chain 1310 first drives the first rotating member 1211 to rotate, and then the first rotating member 1211 drives the second transmission chain 1320 to move axially. To ensure that the second transmission chain 1320 moves only in the axial direction and not perpendicular to the axial direction, a traction part 1321 is provided between the first rotating member 1211 and the second transmission chain 1320. The second transmission chain 1320 is connected to the first rotating member 1211 through the traction part 1321. In one embodiment, the traction unit 1321 includes a third protrusion 1218 disposed on the first rotating member 1211 and a connector 1322 connected to the second transmission chain 1320. The connector 1322 has a third slotted hole 1323. When the first rotating member 1211 rotates, the third protrusion 1218 can slide in the third slotted hole 1323, allowing the third protrusion 1218 to move in an arc while keeping the second transmission chain 1320 moving only in the axial direction. It is understood that in other embodiments, the traction unit 1321 can also be configured in other forms, such as providing a flexible chain on the connector 1322 and connecting the flexible chain with the third protrusion 1218. The first transmission chain 1310 and the second transmission chain 1320 respectively pass through the seat 1400 on the tube assembly to maintain stability.

[0044] Since the connection structure and motion mechanism between the first transmission chain 1310 and the first locking mechanism 1210 are the same as those between the second transmission chain 1320 and the second locking mechanism 1220, the following description will only focus on the connection structure between the first transmission chain 1310 and the first locking mechanism 1210.

[0045] When the first transmission chain 1310 and the first rotating member 1211 are engaged, the first locking member 1212 is positioned close to and locking the first branch pipe 1101. When the first rotating member 1211 rotates clockwise or counterclockwise relative to the first transmission chain 1310 to disengage, the first locking member 1212 is positioned away from the first branch pipe 1101. In one embodiment, the first locking mechanism 1210 further includes a first reset member 1219. Figure 4 The diagram illustrates that the first reset member 1219 is an elastic member located between the second seat 1402 and the first locking member 1212. While the first locking member 1212 is moving away from the first branch pipe 1101, the first reset member 1219 can accumulate elastic force, causing the first rotating member 1211 to have a tendency to rotate back and engage with the first transmission chain 1310. Thus, the teeth on the edge of the first rotating member 1211 are always in contact with the first transmission chain 1310, so that the first rotating member 1211 can move from the disengaged state to the engaged state under the movement of the first transmission chain 1310.

[0046] When the first rotating member 1211 is engaged with the first transmission chain 1310, the teeth of the first rotating member 1211 are considered to be on the horizontal line with the rotating shaft 1213. In actual use, when it is necessary to switch the camera bracket 100 from the retracted state to the extended state, the first transmission chain 1310 is first lifted relative to the tube assembly 110 to drive the first transmission member 1211 to rotate and disengage. The teeth of the first rotating member 1211 then move up relative to the horizontal line, becoming... Figure 5 The state is shown. Since the teeth of the first rotating member 1211 are above the horizontal line, the second branch tube 1102 can be pulled downwards to extend the entire length. The same process can also be performed between the second branch tube 1102 and the third branch tube 1103. When switching the camera bracket 100 from the extended state to the retracted state, the first transmission chain 1310 is first moved downwards relative to the tube assembly 110 to drive the first transmission member 1211 to rotate and disengage. The teeth of the first rotating member 1211 then move downwards relative to the horizontal line, becoming... Figure 4 The state shown. Since the teeth of the first rotating member 1211 are below the horizontal line, the second branch pipe 1102 can be pulled above the horizontal line to shorten the whole. At the same time, the same process can be performed between the second branch pipe 1102 and the third branch pipe 1103.

[0047] In other embodiments, the first transmission chain 1310 and the first rotating member 1211 may not be configured to mesh with each other. Instead, the first transmission chain 1310 may have a first engaging groove, and the first rotating member 1211 may have a first engaging end. The first transmission chain 1310 can move axially to drive the first rotating member 1211 to rotate, causing the first engaging end to disengage from or enter the first engaging groove. One or more first engaging grooves may be provided on the first transmission chain 1310.

[0048] In summary, the photography bracket 100 provided by the present invention includes a tube assembly 110, a locking assembly 120 and a transmission assembly 130. The tube assembly 110 can be extended to a suitable length, and the length of the tube assembly 110 is locked and fixed synchronously by the locking assembly 120 and the transmission assembly 130.

[0049] refer to Figure 6 and Figure 7 A drive assembly 1404 is also installed on the first base 1401. The drive assembly 1404 includes a drive component 1405 and a knob 1406. The knob 1406 is connected to the drive component 1405. Figure 4 The diagram illustrates that the driving element 1405 is a gear 1406 connected to the first transmission chain 1310. The driving element 1405 meshes with the first transmission chain 1310. The knob 1406 can be rotated to drive the driving element 1405 to rotate, and further drive the first transmission chain 1310 to move up or down relative to the first branch pipe 1101. In one embodiment, the knob 1406 is movably connected to the driving element 1405. The knob 1406 is provided with a protrusion 1407. The first seat 1401 is provided with a limiting groove 1408 that can limit the protrusion 1407, preventing the knob 1406 from being rotated. The knob 1406 can be pressed along the rotation axis to disengage the protrusion 1407 from the limiting groove 1408, thereby allowing the knob 1406 to be rotated. A return member 1409 is provided between the knob 1406 and the drive member 1405. When the knob 1406 is pressed, the return member 1409 accumulates a reset force. When the knob 1406 is released, the return member 1409 releases the reset force, causing the protrusion 1407 to re-engage into the limiting groove 1408. The knob 1406 cannot be rotated without external pressure to prevent accidental unlocking of the camera bracket 100 due to accidental activation of the knob 1406.

[0050] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A photographic stand, characterized in that, include: The pipe assembly includes a first branch pipe, a second branch pipe, and a third branch pipe; The locking assembly includes a first locking mechanism and a second locking mechanism. The first locking mechanism is disposed between the first branch pipe and the second branch pipe, and the second locking mechanism is disposed between the second branch pipe and the third branch pipe. The first locking mechanism includes a first rotating member and a first locking member. The first rotating member is rotatable to drive the first locking member to restrict the relative axial movement of the first branch pipe and the second branch pipe, or to release the restriction on the relative movement of the first branch pipe and the second branch pipe. The second locking mechanism includes a second rotating member and a second locking member. The second rotating member is rotatable to drive the second locking member to restrict the relative axial movement of the second branch pipe and the third branch pipe, or to release the restriction on the relative movement of the second branch pipe and the third branch pipe. The transmission assembly includes a first transmission chain and a second transmission chain, wherein the first transmission chain is connected to the first rotating member, and the second transmission chain is connected to the first rotating member; the first transmission chain can drive the first rotating member to rotate, thereby causing the second transmission chain to drive the second rotating member to rotate. The first rotating member is provided with a first connecting part, and the first locking mechanism is connected to the first rotating member through the first connecting part. When the first rotating member rotates, the first connecting part can drive the first locking member to remain stationary in the axial direction of the pipe assembly and to move in the direction perpendicular to the axial direction, thereby moving closer to or away from the first branch pipe. The second rotating member is provided with a second connecting part, and the second locking mechanism is connected to the second rotating member through the second connecting part. When the second rotating member rotates, the second connecting part can drive the second locking member to remain stationary in the axial direction of the pipe assembly and to move in the direction perpendicular to the axial direction, thereby moving closer to or away from the second branch pipe. The first connecting portion includes a first protrusion disposed on the first rotating member and a first movable member connected to the first locking member. The first movable member has a first slotted hole for the first protrusion to move. When the first rotating member rotates, the first protrusion can slide in the first slotted hole, so that the first locking member moves only in the axial direction perpendicular to the tube assembly. The second connecting portion includes a second protrusion disposed on the second rotating member and a second movable member connected to the second locking member. The second movable member has a second slotted hole for the second protrusion to move. When the second rotating member rotates, the second protrusion can slide in the second slotted hole, so that the second locking member moves only in the axial direction perpendicular to the tube assembly.

2. The photographic support according to claim 1, characterized in that, The first transmission chain is disposed within the first branch pipe along the axial direction of the first branch pipe, and the second transmission chain is disposed within the second branch pipe along the axial direction of the second branch pipe. The first transmission chain is provided with a first locking groove, and the first rotating member is provided with a first locking end. The first transmission chain can move axially to drive the first rotating member to rotate, so that the first locking end disengages from or enters the first locking groove. The second transmission chain is provided with a second locking groove, and the second rotating member is provided with a second locking end. The second transmission chain can move axially to drive the second rotating member to rotate, so that the second locking end disengages from or enters the second locking groove.

3. The photographic support according to claim 2, characterized in that, When the first snap-fit ​​end disengages from the first snap-fit ​​groove, the first locking member moves away from the first branch pipe; when the first snap-fit ​​end enters the first snap-fit ​​groove, the first locking member locks the first branch pipe. When the second snap-fit ​​end disengages from the second snap-fit ​​groove, the second locking member moves away from the second branch pipe; when the second snap-fit ​​end enters the second snap-fit ​​groove, the second locking member locks the second branch pipe.

4. The photographic support according to claim 2, characterized in that, The first transmission chain has multiple first locking slots. The first rotating member can rotate so that the first locking end can be aligned with any first locking position, and drive the first locking member to lock the relative positions of the first branch pipe and the second branch pipe. The second transmission chain has multiple second locking positions. The second rotating member can rotate so that the second locking end can be aligned with any second locking position, and drive the second locking member to lock the relative positions of the second branch pipe and the third branch pipe.

5. The photographic support according to claim 2, characterized in that, The first locking mechanism further includes a first reset member. When the first snap-fit ​​end disengages from the first snap-fit ​​groove, it can drive the first reset member to accumulate a reset force. The first reset member can release the reset force, so that the first snap-fit ​​end has a tendency to enter the first snap-fit ​​groove. The second locking mechanism also includes a second reset member. When the second locking end disengages from the second locking groove, it can drive the second reset member to accumulate a reset force. The second reset member can release the reset force, so that the second locking end has a tendency to enter the second locking groove.

6. The photographic support according to claim 4, characterized in that, The first transmission chain is configured as a first rack, and the first rotating member has multiple teeth on the part facing the first rack to mesh with the first rack. The first transmission chain can drive the first rotating member to rotate to disengage, so that the first transmission chain and the first rotating member can move relative to each other. The second transmission chain is configured as a second rack, and the second rotating member has multiple teeth on the part facing the second rack to mesh with the second rack. The second transmission chain can drive the second rotating member to rotate to disengage, so that the second transmission chain and the second rotating member can move relative to each other.

7. The photographic stand according to claim 1, characterized in that, The first rotating member is provided with a traction part, and the second transmission chain is connected to the first rotating member through the traction part. When the first rotating member rotates, the traction part can drive the second transmission chain to move in the axial direction of the tube assembly, and not move in the direction perpendicular to the axial direction.

8. The photographic support according to claim 7, characterized in that, The traction part includes a third protrusion on the first rotating member and a connector connected to the second transmission chain. The connector has a third slotted hole for the third protrusion to move. When the first rotating member rotates, the third protrusion can slide in the third slotted hole, so that the second transmission chain moves in the axial direction of the tube assembly and does not move in the direction perpendicular to the axial direction.

9. The photographic stand according to claim 1, characterized in that, The camera bracket also includes a drive assembly connected to the first transmission chain. The drive assembly can be manipulated to move the first transmission chain along the axial direction.

10. The photographic stand according to claim 9, characterized in that, The drive assembly includes a drive element and a knob. The knob is connected to the drive element and can be rotated to drive the drive element to rotate, thereby driving the first transmission chain to move in the axial direction through the drive element.

11. The photographic support according to claim 10, characterized in that, The knob is movably connected to the drive component. The knob has a protrusion, and the first branch pipe has a limiting groove that can limit the protrusion so that the knob cannot be rotated. A reset component is provided between the knob and the drive component. The knob can be pressed along the rotation axis of the drive component to disengage the protrusion from the limiting groove, so that the knob can be rotated. At the same time, the reset component accumulates a reset force and can release the reset force to make the protrusion re-engage into the limiting groove.

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