CN219911409U - Photographic support - Google Patents

Abstract

The utility model relates to a photographic bracket, which comprises a pipe body component, a locking component and a transmission component, wherein the pipe body component comprises a first branch pipe, a second branch pipe and a third branch pipe, the locking component comprises a first locking mechanism and a second locking mechanism, the transmission component comprises a first transmission chain and a second transmission chain, the first transmission chain can move along the axial direction to drive a first rotating member to rotate, the first rotating member can further drive the first locking mechanism and the second transmission chain to move, and the second transmission chain can simultaneously drive the second locking mechanism to move so as to synchronously lock the relative positions of the branch pipes or synchronously release the restriction on the relative positions. According to the photographing bracket provided by the embodiment of the utility model, the pipe body component can be axially stretched or contracted, and the first transmission chain is operated in the process that the photographing bracket is mutually switched from the stretching state to the receiving state, so that the locking component can be driven to synchronously lock the length of the pipe body component or synchronously unlock the pipe body component.

Description

Photographic support

Technical Field

The utility model relates to the technical field of photographic accessories, in particular to a photographic bracket.

Background

To stabilize a photographic fixture or other instrument for photography, image capture, or manipulation, a photographic support frame is typically used to support the photographic fixture or instrument. Such photographic support frame generally includes a plurality of telescopic stay tubes, has the branch pipe that multisection can remove each other in the telescopic stay tube, and during the use, need manual stretching telescopic stay tube to required length to lock the relative position between each branch pipe respectively, be equipped with locking device between every two sections of branch pipes of most telescopic stay tubes, for example patent CN114526426A each can be equipped with locking device between the branch pipe that removes each other, and every telescopic stay tube probably has two or even a plurality of locking device like this, need operate a plurality of locking device and fix when fixing the locking to photographic support frame, and it is very inconvenient to operate.

Disclosure of Invention

The utility model provides a photographic bracket to solve the problem of inconvenient locking of the photographic bracket.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the present utility model provides a photographing bracket, comprising:

the pipe body assembly comprises a first branch pipe, a second branch pipe and a third branch pipe;

the locking assembly comprises a first locking mechanism and a second locking mechanism, the first locking mechanism is arranged between the first branch pipe and the second branch pipe, and the second locking mechanism is arranged between the second branch pipe and the third branch pipe; the first locking mechanism comprises a first rotating piece and a first locking piece, and the first rotating piece can rotate to drive the first locking piece to limit the relative movement of the first branch pipe and the second branch pipe along the axial direction or release the limit on the relative movement of the first branch pipe and the second branch pipe; the second locking mechanism comprises a second rotating piece and a second locking piece, and the second rotating piece can rotate to drive the second locking piece to limit the relative movement of the second branch pipe and the third branch pipe along the axial direction or release the limit on the relative movement of the second branch pipe and the third branch pipe;

the transmission assembly comprises a first transmission chain and a second transmission chain, the first transmission chain is connected with the first rotating piece, and the second transmission chain is connected with the first rotating piece; the first transmission chain can drive the first rotating piece to rotate, and then the second transmission chain drives the second rotating piece to rotate.

In one embodiment, the first transmission chain is arranged in the first branch pipe along the axial direction of the first branch pipe, and the second transmission chain is arranged in the second branch pipe along the axial direction of the second branch pipe; the first transmission chain is provided with a first clamping groove, the first rotating piece is provided with a first clamping end, and the first transmission chain can move along the axial direction to drive the first rotating piece to rotate, so that the first clamping end is separated from or enters the first clamping groove; the second transmission chain is provided with a second clamping groove, the second rotating piece is provided with a second clamping end, and the second transmission chain can move along the axial direction to drive the second rotating piece to rotate, so that the second clamping end is separated from or enters the second clamping groove.

In one embodiment, when the first clamping end is separated from the first clamping groove, the first locking member is far away from the first branch pipe, and when the first clamping end enters the first clamping groove, the first locking member locks the first branch pipe; when the second clamping end is separated from the second clamping groove, the second locking piece is far away from the second branch pipe, and when the second clamping end enters the second clamping groove, the second locking piece locks the second branch pipe.

In one embodiment, the first transmission chain is formed with a plurality of first clamping grooves, and the first rotating member can rotate, so that the first clamping end can align with any one of the first clamping grooves 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 is provided with a plurality of second clamping grooves, the second rotating piece can rotate, so that the second clamping end can be aligned with any one of the second clamping grooves, and the second locking piece is driven to lock the relative positions of the second branch pipe and the third branch pipe.

In one embodiment, the first locking mechanism further includes a first reset member, and the first clamping end can drive the first reset member to accumulate a reset force when being separated from the first clamping groove, and the first reset member can release the reset force, so that the first clamping end has a tendency to enter the first clamping groove; the second locking mechanism further comprises a second reset piece, the second clamping end can be driven to accumulate reset force when being separated from the second clamping groove, and the second reset piece can release the reset force, so that the second clamping end has a trend of entering the second clamping groove.

In one embodiment, the first transmission chain is provided with a first rack, a plurality of teeth are arranged at the position of the first rotating member facing the first rack so as to be meshed with the first rack, and the first transmission chain can drive the first rotating member to rotate so as to be disengaged, so that the first transmission chain and the first rotating member can relatively move; the second transmission chain is set to be the second rack, the second rotates the piece towards the position of second rack is equipped with a plurality of teeth, in order with second rack intermeshing, the second transmission chain can drive the second rotates the piece and rotates in order to break away from the meshing for the second transmission chain with the second rotates the piece and can relatively move.

In one embodiment, the first rotating member is provided with a first connecting portion, the first locking mechanism is connected to the first rotating member through the first connecting portion, and when the first rotating member rotates, the first connecting portion can drive the first locking member to be immovable in an axial direction of the pipe body assembly and to be movable in a direction perpendicular to the axial direction, so as to approach or separate from the first branch pipe; the second rotating part is provided with a second connecting part, the second locking mechanism is connected to the second rotating part through the second connecting part, and when the second rotating part rotates, the second connecting part can drive the second locking part to be not moved in the axial direction of the pipe body assembly and to be moved in the direction perpendicular to the axial direction, so that the second locking mechanism is close to or far away from the second branch pipe.

In one embodiment, the first connection part includes a first bump provided on the first rotating member, and a first moving member connected to the first locking member, the first moving member is provided with a first bar-shaped hole for the first bump to move, and when the first rotating member rotates, the first bump can slide in the first bar-shaped hole, so that the first locking member moves only in an axial direction perpendicular to the pipe body assembly; the second connecting portion comprises a second protruding block arranged on the second rotating piece and a second moving piece connected to the second locking piece, a second strip-shaped hole for the second protruding block to move is formed in the second moving piece, and when the second rotating piece rotates, the second protruding block can slide in the second strip-shaped hole, so that the second locking piece only moves in the axial direction perpendicular to the pipe body assembly.

In one embodiment, the first rotating member is provided with a traction portion, the second transmission chain is connected to the first rotating member through the traction portion, and when the first rotating member rotates, the traction portion can drive the second transmission chain to move in an axial direction of the pipe body assembly and not move in a direction perpendicular to the axial direction.

In one embodiment, the traction portion includes a third bump provided on the first rotating member and a connecting member connected to the second transmission chain, the connecting member is provided with a third bar hole for the third bump to move, and when the first rotating member rotates, the third bump can slide in the third bar hole, so that the second transmission chain moves in an axial direction of the pipe body assembly and does not move in a direction perpendicular to the axial direction.

In one embodiment, the photographing bracket further comprises a driving assembly connected with the first transmission chain, and the driving assembly can be operated to drive the first transmission chain to move along the axial direction.

In one embodiment, the driving assembly comprises a driving member and a knob, wherein the knob is connected to the driving member and can be rotated to drive the driving member to rotate, so that the driving member drives the first transmission chain to move along the axial direction.

In one embodiment, the knob is movably connected with the driving piece, a convex part is arranged on the knob, and a limiting groove capable of limiting the convex part is arranged on the first branch pipe, so that the knob cannot be rotated; the knob with be equipped with the piece that resets between the driving piece, the knob can be followed driving piece pivoted axial is pressed, so that the convex part breaks away from the spacing groove, thereby the knob can be rotated, and the reset force is accumulated to the piece that resets simultaneously, the reset force can be released to reset, makes the convex part card again goes into the spacing groove.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

according to the photographing bracket provided by the embodiment of the utility model, the pipe body component can be axially stretched or contracted, and in the process that the photographing bracket is mutually switched from the stretching state to the receiving state, the first transmission chain is operated, so that the locking component can be driven to synchronously lock the length of the pipe body component, and the first transmission chain can also be operated, so that the locking component can be driven to synchronously unlock the pipe body component.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a photographic bracket in a folded state according to an embodiment of the utility model;

FIG. 2 is a schematic view of a photographic bracket in an unfolded state according to an embodiment of the utility model;

FIG. 3 is a schematic cross-sectional view of the photographing bracket of FIG. 2, and a partially enlarged view thereof;

FIG. 4 is a schematic view of the inside and partially enlarged structure of the photographing bracket shown in FIG. 2;

FIG. 5 is a schematic view of an enlarged partial structure of the photographing bracket of FIG. 2 in another state;

FIG. 6 is an enlarged view of the photographing bracket e of FIG. 3;

fig. 7 is an exploded view of the drive assembly of fig. 6.

The reference numerals are explained as follows:

a photographic stand-100; a mounting seat-200; a tube body assembly-110; a locking assembly-120; a transmission assembly-130; branch pipe-1100; a locking mechanism-1200; drive chain-1300; first branch pipe-1101; a second branch pipe-1102; a third branch-1103; a base 1400; a first housing-1401; a second housing-1402; third base-1403; a first locking mechanism-1210; a second locking mechanism-1220; a first rotating member-1211; first locking member-1212; a second rotating member-1221; second locker-1222; rotating shaft-1213; a first connection portion-1214; first bump-1215; a first runner-1216; first bar aperture-1217; a first drive train-1310; a second drive train-1320; a first rack-1311; second rack-1321; traction section-1321; third bump-1218; a first reset element-1219; a connector-1322; a third bar-shaped hole-1323; a drive assembly-1404; a driver-1405; knob-1406; gear-1406; male part-1407; limit grooves-1408; return member-1409

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, the present utility model provides a photographing bracket 100, one end of which is used to be supported on a flat or uneven table surface and ground, and a photographing apparatus may be mounted at an end remote from the table surface or ground, and the photographing bracket 100 includes a tube assembly 110, the tube assembly 110 being capable of being extended to a proper length, so as to support the photographing apparatus mounted at the end of the photographing bracket 100 at a reasonable photographing height.

It should be noted that, besides the stand 100 may be used alone, the stand 100 may also be used in combination with a mounting base, where one end of the mounting base is rotatably connected to a plurality of stand 100, where the stand 100 is used to support a flat or uneven table top and ground, the mounting base is connected to an end of the stand 100 away from the table top or ground, and the mounting base is used to mount a photographing apparatus through a switching structure (such as a threaded shaft, a threaded hole, a quick-mounting base, etc.) disposed at an end of the stand, and the plurality of stand 100 may be unfolded at a certain angle on the mounting base and extend continuously to extend an axial length of the stand 100, so as to support a photographing apparatus mounted at an end of the mounting base at a reasonable photographing height. Because the photographing bracket 100 can be extended and shortened, the photographing bracket 100 can be applied to other photographing use scenes in which the height needs to be adjusted.

Referring to fig. 3, the photographing bracket 100 includes a tube assembly 110, a locking assembly 120, and a driving assembly 130, wherein the tube assembly 110 has a plurality of branches 1100, the branches 1100 can move relatively to adjust the photographing bracket 100 to a proper length, the locking assembly 120 includes a plurality of sets of locking mechanisms 1200, a set of locking mechanisms 1200 is disposed between every two branches 1100, each set of locking mechanisms 1200 can lock and limit the relative movement between two adjacent branches 1100, or release the limit on the relative movement, the driving assembly 130 includes a plurality of sets of driving chains 1300, a set of driving chains 1300 is disposed between every two sets of locking mechanisms 1200, and one set of driving chains 1300 is operated to synchronously drive the other driving chains 1300 and the locking mechanisms 1200, so as to synchronously limit the relative movement between the branches 1100, or synchronously release the limit on the relative movement. It should be understood that, in actual use, if the photographing bracket 100 is required to be switched from the contracted state shown in fig. 1 to the extended state shown in fig. 2, one of the sets of transmission chains 1300 is operated to drive the other transmission chains 1300 to move, and the plurality of sets of locking mechanisms 1200 are unlocked to enable the plurality of branch pipes 1100 to move relatively, and after the pipe assembly is manually stretched to a predetermined length, one of the sets of transmission chains 1300 is operated to drive the plurality of sets of locking mechanisms 1200 to lock synchronously and restrict the relative movement between the plurality of branch pipes 1100 so as to lock the length of the pipe assembly 110.

Referring to fig. 3, the pipe body assembly 110 includes a first branch pipe 1101, a second branch pipe 1102 and a third branch pipe 1103, that is, the above-described multi-section branch pipe 1100, the second branch pipe 1102 is sleeved in the first branch pipe 1101, the third branch pipe 1103 is sleeved in the second branch pipe 1102, a seat 1400 fixedly connected with the branch pipe 1100 is provided in each section of branch pipe 1100 to connect the parts inside the pipe body, wherein 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 branches 1100 may be four or more.

The locking assembly 120 includes a first locking mechanism 1210 and a second locking mechanism 1220, the first locking mechanism 1210 being disposed between the first leg 1101 and the second leg 1102, the second locking mechanism 1220 being disposed between the second leg 1102 and the third leg 1103, the first locking mechanism 1210 being secured to the second housing 1402 to lock the relative position between the first leg 1101 and the second leg 1102, and the second locking mechanism 1220 being secured to the third housing 1403 to lock the relative position between the second leg 1102 and the third leg 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, and since the first locking mechanism 1210 and the second locking mechanism 1220 have similar features, only the first locking mechanism 1210 is illustrated as an example. The first rotary member 1211 can be rotated to cause the first locking member 1212 to restrict axial movement of the first and second branch vessels 1101, 1102 or to release the restriction on movement of the first and second branch vessels 1101, 1102. Wherein the first rotating member 1211 includes a rotating shaft 1213 coupled to the first housing 1401, the rotating shaft 1213 extending in a direction perpendicular to the axial direction of the branch pipe 1100, so that all points on the first rotating member 1211 are displaced not only in the axial direction of the branch pipe 1100 but also in a direction perpendicular to the axial direction when the first rotating member 1211 rotates along the rotating shaft 1213.

Referring to fig. 4 and 5, the connection positions of the first rotation member 1211 and the first locking mechanism 1210 when the first rotation member 1211 is rotated counterclockwise and clockwise are shown in fig. 4 and 5, respectively. First rotary member 1211 is provided with first coupling portion 1214, and first locking mechanism 1210 is coupled to first rotary member 1211 via first coupling portion 1214 such that when first rotary member 1211 is rotated, first coupling portion 1214 causes first locking member 1212 to move in a direction axially of branch pipe 1100 and in a direction perpendicular to the axial direction, i.e., toward or away from first branch pipe 1101 from the side of first branch pipe 1101. Wherein, the first connecting portion 1214 includes a first protrusion 1215 provided on the first rotating member 1211, and a first moving member 1216 coupled to the first locking member 1212, the first moving member 1216 being provided with a first bar-shaped hole 1217, and when the first rotating member 1211 rotates, the first protrusion 1215 can slide in the first bar-shaped hole 1217, so that the first protrusion 1215 can move in an arc while keeping the first locking member 1212 to move only in a direction perpendicular to the axial direction of the branch pipe 1100. First locking member 1212 passes adjacent to first branch tube 1101 and abuts first branch tube 1101 to hold first branch tube 1101 and second branch tube 1102 against relative movement. The first movable member 1216 penetrates the second seat 1402 and is limited in the second seat 1402, so that the first movable member 1216 and the first locking member 1212 are more stable. It will be appreciated that in other embodiments, the first link 1214 may not be provided, and the first locking member 1212 may be fixedly coupled to the first rotary member 1211 such that the first locking member 1212 moves in an arc toward and away from the first branch tube 1101. In other embodiments, the first connecting portion 1214 may be provided in other forms, such as a flexible chain provided on the first movable member 1216, and the flexible chain is cooperatively connected with the first protrusion 1215.

With continued reference to fig. 4 and 5, the transmission assembly 130 includes a first transmission chain 1310 and a second transmission chain 1320, where the first transmission chain 1310 may be understood as a bar structure between the first housing 1401 and the second housing 1402 in fig. 4 and 5, and the second transmission chain 1320 may be understood as a bar structure between the second housing 1402 and the third housing 1403 in fig. 4 and 5, and fig. 4 illustrates that the first transmission chain 1310 and the second transmission chain 1320 are respectively provided as a first rack 1311 and a second rack 1321, the first rack 1311 is cooperatively connected with the first rotating member 1211, a portion of the first rotating member 1211 facing the first rack 1311 is provided with a plurality of teeth to engage with the first rack 1311, and similarly, a portion of the second rotating member 1221 facing the second rack 1321 is provided with a plurality of teeth to engage with the second rack 1321, so that the first rotating member 1211 and the second rotating member 1211 can be rotated by the engagement when the first rack 1311 and the second rack 1321 move in the axial direction 1221, respectively.

The connection positions of the first rotary member 1211 and the second transmission chain 1320 when the first rotary member 1211 rotates counterclockwise and clockwise are shown in fig. 4 and 5, respectively. To move the second drive chain 1320 while moving the first drive chain 1310, the second drive chain 1320 is also connected to the first rotating member 1211, and the first drive chain 1310 first rotates the first rotating member 1211, and then the first rotating member 1211 drives the second drive chain 1320 to move in the axial direction. In order to move the second transmission chain 1320 only in the axial direction, not perpendicular to the axial direction, a traction portion 1321 is further provided between the first rotary member 1211 and the second transmission chain 1320, and the second transmission chain 1320 is connected to the first rotary member 1211 through the traction portion 1321. In an embodiment, the traction portion 1321 includes a third protrusion 1218 provided on the first rotating member 1211 and a connecting member 1322 connected to the second transmission chain 1320, the connecting member 1322 is provided with a third bar-shaped hole 1323, and when the first rotating member 1211 rotates, the third protrusion 1218 can slide in the third bar-shaped hole 1323, so that the third protrusion 1218 can move in an arc while keeping the second transmission chain 1320 to move only in the axial direction. It will be appreciated that in other embodiments, the traction portion 1321 may be provided in other forms, such as providing a flexible chain on the connector 1322, to cooperatively connect the flexible chain with the third bump 1218. The first and second transmission chains 1310 and 1320 respectively penetrate the housing 1400 on the housing assembly to maintain stability.

Since the connection structure and the movement 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, only the connection structure between the first transmission chain 1310 and the first locking mechanism 1210 will be described below.

With the first drive chain 1310 intermeshed with the first rotating member 1211, the first locking member 1212 is positioned adjacent to and locks the first leg 1101, and with the first rotating member 1211 rotated clockwise or counterclockwise relative to the first drive chain 1310 to disengage, the first locking member 1212 is positioned away from the first leg 1101. In one embodiment, the first locking mechanism 1210 further includes a first return member 1219. Fig. 4 illustrates that the first return member 1219 is an elastic member disposed between the second housing 1402 and the first locking member 1212. The first locking member 1212 is capable of accumulating an elastic force while moving away from the first branch tube 1101 such that the first rotary member 1211 has a tendency to rotate back and engage the first drive chain 1310 such that teeth on an edge of the first rotary member 1211 are in constant contact with the first drive chain 1310 such that the first rotary member 1211 can move from a disengaged state to an engaged state under movement of the first drive chain 1310.

With the first rotating member 1211 engaged with the first drive chain 1310, the teeth of the first rotating member 1211 are considered to be in horizontal line with the rotational axis 1213. In actual use, when the photographing bracket 100 is required to be switched from the storage state to the extended state, the first transmission chain 1310 is lifted up relative to the tube assembly 110 to drive the first transmission member 1211 to rotate out of engagement, and the teeth of the first transmission member 1211 move up relative to the horizontal line, so as to achieve the state shown in fig. 5. Since the teeth of the first rotary member 1211 are above the horizontal line, the second branch pipe 1102 can be pulled in a direction below the horizontal line to elongate the whole, and the same process can be performed between the second branch pipe 1102 and the third branch pipe 1103. When the photographing bracket 100 is required to be switched from the extended state to the storage state, the first transmission chain 1310 is first moved downward relative to the tube assembly 110 to drive the first transmission member 1211 to rotate out of engagement, and the teeth of the first rotation member 1211 are moved downward relative to the horizontal line, so as to be in the state shown in fig. 4. Since the teeth of the first rotary member 1211 are below the horizontal line, the second branch pipe 1102 can be pulled in a direction above the horizontal line to shorten the whole, and the same process can be performed between the second branch pipe 1102 and the third branch pipe 1103.

In other embodiments, the first driving chain 1310 and the first rotating member 1211 may not be configured to be engaged with each other, and a first locking slot may be provided in the first driving chain 1310, and the first rotating member 1211 may be configured to have a first locking end, so that the first driving chain 1310 may move in an axial direction to rotate the first rotating member 1211, so that the first locking end is disengaged from or enters the first locking slot. The first snap-in groove may be provided in one or more on the first drive chain 1310.

In summary, the photographing bracket 100 provided by the present utility model includes the tube assembly 110, the locking assembly 120 and the transmission assembly 130, wherein the tube assembly 110 can be extended to a suitable length, and the length of the tube assembly 110 is synchronously locked and fixed by the locking assembly 120 and the transmission assembly 130.

Referring to fig. 6 and 7, a driving assembly 1404 is further mounted on the first housing 1401, the driving assembly 1404 includes a driving member 1405 and a knob 1406, the knob 1406 is connected to the driving member 1405, fig. 4 illustrates the driving member 1405 as a gear 1406 connected to a first transmission chain 1310, the driving member 1405 is meshed with the first transmission chain 1310, and the knob 1406 can be rotated to rotate the driving member 1405 and further drive the first transmission chain 1310 up or down relative to the first branch 1101. In an embodiment, the knob 1406 is movably connected to the driving member 1405, the knob 1406 is provided with a protrusion 1407, the first seat 1401 is provided with a limiting groove 1408 capable of limiting the protrusion 1407, so that the knob 1406 cannot be rotated, and the knob 1406 can be pressed along the rotating axial direction, so that the protrusion 1407 is separated from the limiting groove 1408, and the knob 1406 can be rotated. A return member 1409 is provided between the knob 1406 and the driving member 1405, and the return member 1409 accumulates a return force while the knob 1406 is pressed, and when the pressing of the knob 1406 is released, the return member 1409 releases the return force, so that the protruding portion 1407 is again engaged with the stopper groove 1408. Without external force pressing, the knob 1406 cannot be rotated to prevent unlocking of the photographing bracket 100 due to erroneous touching of the knob 1406.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (13)

1. A photographic bracket, comprising:

the pipe body assembly comprises a first branch pipe, a second branch pipe and a third branch pipe;

the locking assembly comprises a first locking mechanism and a second locking mechanism, the first locking mechanism is arranged between the first branch pipe and the second branch pipe, and the second locking mechanism is arranged between the second branch pipe and the third branch pipe; the first locking mechanism comprises a first rotating piece and a first locking piece, and the first rotating piece can rotate to drive the first locking piece to limit the relative movement of the first branch pipe and the second branch pipe along the axial direction or release the limit on the relative movement of the first branch pipe and the second branch pipe; the second locking mechanism comprises a second rotating piece and a second locking piece, and the second rotating piece can rotate to drive the second locking piece to limit the relative movement of the second branch pipe and the third branch pipe along the axial direction or release the limit on the relative movement of the second branch pipe and the third branch pipe;

the transmission assembly comprises a first transmission chain and a second transmission chain, the first transmission chain is connected with the first rotating piece, and the second transmission chain is connected with the first rotating piece; the first transmission chain can drive the first rotating piece to rotate, and then the second transmission chain drives the second rotating piece to rotate.

2. The photographic bracket of claim 1, wherein the first drive chain is disposed within the first branch pipe along an axial direction of the first branch pipe, and the second drive chain is disposed within the second branch pipe along an axial direction of the second branch pipe; the first transmission chain is provided with a first clamping groove, the first rotating piece is provided with a first clamping end, and the first transmission chain can move along the axial direction to drive the first rotating piece to rotate, so that the first clamping end is separated from or enters the first clamping groove; the second transmission chain is provided with a second clamping groove, the second rotating piece is provided with a second clamping end, and the second transmission chain can move along the axial direction to drive the second rotating piece to rotate, so that the second clamping end is separated from or enters the second clamping groove.

3. The photographic bracket of claim 2, wherein the first locking member is remote from the first manifold when the first clamping end is disengaged from the first clamping slot, and the first locking member locks the first manifold when the first clamping end is advanced into the first clamping slot; when the second clamping end is separated from the second clamping groove, the second locking piece is far away from the second branch pipe, and when the second clamping end enters the second clamping groove, the second locking piece locks the second branch pipe.

4. The photographing bracket as claimed in claim 2, wherein the first driving chain is formed with a plurality of first clamping grooves, and the first rotating member is capable of rotating, so that the first clamping end can align with any one of the first clamping grooves 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 is provided with a plurality of second clamping grooves, the second rotating piece can rotate, so that the second clamping end can be aligned with any one of the second clamping grooves, and the second locking piece is driven to lock the relative positions of the second branch pipe and the third branch pipe.

5. The photographic bracket of claim 2, wherein the first locking mechanism further comprises a first reset member, the first reset member is capable of being driven to accumulate a reset force when the first clamping end is disengaged from the first clamping groove, and the first reset member is capable of releasing the reset force so that the first clamping end has a tendency to enter the first clamping groove; the second locking mechanism further comprises a second reset piece, the second clamping end can be driven to accumulate reset force when being separated from the second clamping groove, and the second reset piece can release the reset force, so that the second clamping end has a trend of entering the second clamping groove.

6. The photographing bracket as claimed in claim 4, wherein the first driving chain is provided with a first rack, a portion of the first rotating member facing the first rack is provided with a plurality of teeth to be engaged with the first rack, and the first driving chain can drive the first rotating member to rotate so as to be disengaged, so that the first driving chain and the first rotating member can relatively move; the second transmission chain is set to be the second rack, the second rotates the piece towards the position of second rack is equipped with a plurality of teeth, in order with second rack intermeshing, the second transmission chain can drive the second rotates the piece and rotates in order to break away from the meshing for the second transmission chain with the second rotates the piece and can relatively move.

7. The photographing bracket as claimed in claim 1, wherein the first rotating member is provided with a first connection portion, the first locking mechanism is connected to the first rotating member through the first connection portion, and when the first rotating member rotates, the first connection portion can drive the first locking member to move in an axial direction of the tube assembly and to move in a direction perpendicular to the axial direction so as to approach or separate from the first branch tube; the second rotating part is provided with a second connecting part, the second locking mechanism is connected to the second rotating part through the second connecting part, and when the second rotating part rotates, the second connecting part can drive the second locking part to be not moved in the axial direction of the pipe body assembly and to be moved in the direction perpendicular to the axial direction, so that the second locking mechanism is close to or far away from the second branch pipe.

8. The photographing bracket as claimed in claim 7, wherein the first connection part includes a first protrusion provided on the first rotation member, and a first moving member coupled to the first locking member, the first moving member being provided with a first bar-shaped hole through which the first protrusion moves, the first protrusion being slidable in the first bar-shaped hole when the first rotation member rotates, such that the first locking member moves only in an axial direction perpendicular to the tube assembly; the second connecting portion comprises a second protruding block arranged on the second rotating piece and a second moving piece connected to the second locking piece, a second strip-shaped hole for the second protruding block to move is formed in the second moving piece, and when the second rotating piece rotates, the second protruding block can slide in the second strip-shaped hole, so that the second locking piece only moves in the axial direction perpendicular to the pipe body assembly.

9. The photographing bracket as claimed in claim 1, wherein the first rotating member is provided with a traction portion, the second transmission chain is connected to the first rotating member through the traction portion, and the traction portion can drive the second transmission chain to move in an axial direction of the tube assembly and not move in a direction perpendicular to the axial direction when the first rotating member rotates.

10. The photographing bracket of claim 9, wherein the traction portion includes a third protrusion provided on the first rotation member and a connection member connected to the second transmission chain, the connection member being provided with a third bar-shaped hole through which the third protrusion moves, the third protrusion being slidable in the third bar-shaped hole when the first rotation member rotates, so that the second transmission chain moves in an axial direction of the tube assembly and does not move in a direction perpendicular to the axial direction.

11. The photographic bracket of claim 1, further comprising a drive assembly coupled to the first drive chain, the drive assembly operable to move the first drive chain in an axial direction.

12. The photographic bracket of claim 11, wherein the drive assembly comprises a drive member and a knob, the knob being coupled to the drive member, the knob being rotatable to rotate the drive member to move the first drive chain in an axial direction via the drive member.

13. The photographic bracket according to claim 12, wherein the knob is movably connected with the driving member, a protrusion is provided on the knob, and a limit groove capable of limiting the protrusion is provided on the first branch pipe, so that the knob cannot be rotated; the knob with be equipped with the piece that resets between the driving piece, the knob can be followed driving piece pivoted axial is pressed, so that the convex part breaks away from the spacing groove, thereby the knob can be rotated, and the reset force is accumulated to the piece that resets simultaneously, the reset force can be released to reset, makes the convex part card again goes into the spacing groove.