WO2010017668A1

WO2010017668A1 - Reversible folded photographic tripod

Info

Publication number: WO2010017668A1
Application number: PCT/CN2008/001732
Authority: WO
Inventors: 刘昊
Original assignee: Liu Hao
Priority date: 2008-08-14
Filing date: 2008-10-14
Publication date: 2010-02-18
Also published as: CN201281215Y

Abstract

A reversible folded photographic tripod comprises a main body (1) and three leg tube assemblies (2). The main body (10) has three position-limiting blocks (12), which are tooth shape projection blocks having a plurality of the teeth (121), for limiting the opening angle of the leg tube assemblies (2) and three extending arms (13). The transverse length of the teeth is the same as the position-limiting blocks (12). The teeth (121) are positioned on the end of the extending arm (13) and are coaxial with the extending arm (13). An opening section (21), which is joined ratablely with the extending arm (13), is provided on the upper end of the leg tube assemblies (2). An adjusting device (3) is provided on a position where the leg tube assembly (2) is joined with the main body (1) such that the leg tube assembly (2) is leaned against the teeth (121) of the position-limiting block(12) or can be rotated 180º. The adjusting device (3) can be pull-out type, press type or rotation type.

Description

Reversible folding photography tripod

The present invention relates to the field of photographic equipment, and more particularly to a reversible folding photographic tripod. Background technique

Most of the photographic tripods currently on the market cannot be reversed after being folded, so the tripod is folded for a longer size. Even if there is a reversible tripod, it is inconvenient to operate, it is not stable when opened, and it is not easy to carry. Summary of the invention

It is an object of the present invention to provide a photographic tripod that is easy to reverse and easy to carry. The object of the present invention is achieved as follows: The present invention provides a reversibly foldable photographic tripod comprising a main body and three foot tube assemblies, the main body having a through hole for mounting a middle shaft, the main body having a restriction foot tube assembly Three limiting blocks for opening the angle, and three extending arms rotatably connected to one end of the foot tube assembly, the end of the leg tube assembly having an opening portion rotatably coupled to the extending arm, the limiting block having a plurality of teeth a toothed lug having a transverse length extending through the entire lug, at the end of the extension arm and coaxial with the extension arm, the foot tube assembly being coupled to the body such that the foot tube assembly and the teeth of the stop block abut or An adjustment device that allows the foot tube assembly to rotate 180°. The adjusting device is a limit adjusting block that is slidably engaged with the opening portion, and the lower side of the opening portion has a guiding groove. Correspondingly, the limiting adjusting block has a sliding groove, and the guiding groove is provided on at least one guiding groove. The sliding groove corresponding to the guiding groove having the stopper is provided with a blocking pin limited by the stopper during the movement, and the maximum displacement of the limit adjusting block is sufficient for the upper edge of the limiting adjusting block to have a larger rotating radius than the foot tube The center of the axis of rotation of the component to the maximum radius of the tooth edge of the stop block.

In order to better grip the teeth and to facilitate the operation, the stopper of the guiding groove is further provided with a spring and a marble, and correspondingly at least one of the corresponding side of the sliding groove matched with the guiding groove is provided Positioning holes that match the marbles. According to another embodiment of the present invention, the adjusting device is a limit adjusting block with a stud and the stud can move up and down in the guiding hole and the counterbore at the bottom of the opening. The stud is sleeved with a return spring and is mounted in the guide. In the hole, one end of the return spring abuts against the bottom edge of the counterbore; the limit adjustment block and the bottom of the opening of the foot tube assembly have a certain gap when the spring is in a free state, and the height of the gap is sufficient to meet the limit of the press. When the adjustment block reaches the limit, the inner radius of rotation of the upper edge of the limit adjustment block is greater than the maximum radius of the center of the rotation axis of the foot tube assembly to the tooth edge of the limit block.

According to still another embodiment of the present invention, the adjusting device is a limit adjusting block rotatable around the opening portion, the limiting adjusting block has holes on both sides thereof, and the leg tube assembly is provided with positioning pin holes on both sides of the opening portion, and the pin The shaft is mounted on the opening through the positioning pin hole and the hole, and the pin is further provided with a spring, and the limit adjusting block and the bottom of the opening of the leg tube assembly have a certain gap when the spring is in a free state. The height of the gap is sufficient to satisfy the maximum radius of the upper edge inner rotation radius of the limit adjustment block larger than the rotation axis center of the foot tube assembly to the tooth edge of the limit block when the adjustment block is pushed to the limit position when the limit is pressed.

Compared with the prior art, the above structure according to the present invention provides three types of adjusting devices, namely, the outer pull type, the push type and the rotary type limit adjusting block and their cooperation with related parts, by quick drawing or Pressing, the limit adjustment block on the foot tube assembly is matched or separated from the teeth of the limit block, so that the foot tube assembly can be opened to different degrees, and the opening angle can be up to 180. Therefore, the reverse folding can be conveniently performed, so that the photography tripod is short and stable after being gathered.

As a further improvement of the present invention, the portion of the main body that cooperates with the central axis is in the shape of a honeycomb star, wherein the middle has a conical structure, the conical body has an arched through hole, and the arms of the extension arm are connected to the roots of the two sides of the arched through hole. .

The main body of the above structure has a conical body and an arched through hole, so that the shield is light and firm.

As a further improvement of the present invention, the upper end of the cone of the main body is provided with a thread for locking the central shaft and a locking sleeve mechanism. It may further include a center shaft that cooperates with the through hole of the main body, a pan-tilt plate on the upper portion of the center shaft, and a photographic head mounted thereto.

Compared with the prior art, the tripod of the above structure has a pan/tilt assembly, so that even when the tripod is closed, the camera head mounted on the center shaft can be placed on the three legs. In the middle and inside, without increasing the folding length of the tripod. DRAWINGS

The invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: FIG. 1 is an assembly drawing of the reverse folding and folding of the present invention;

Figure 2 is an exploded view of the outer pull-out adjusting device;

Figure 3 is a cross-sectional view of the outer pull-out adjusting device;

Figure 4 is a cross-sectional view of the push type adjusting device;

Figure 5 is a cross-sectional view of the rotary adjusting device;

Figure 6 is an exploded view of the rotary adjusting device;

Figure 7 is a view showing a state in which the foot tube assembly is engaged with the main body;

Figure 8 is a view showing the working state of the PTZ connecting plate of the present invention;

Fig. 9 is a view showing a state in which the inverted pan is folded after the gimbal is mounted in the present invention.

List of reference signs

1 - body; 11-through hole; 12-limit block; 121-tooth; 13-extension arm; 14-arched through hole; 141 - both sides of arched through hole; 15-round body; 16-thread ; 17-rotor; 18-spindle hole; 2-foot tube assembly; 21 - opening; 22-guide groove; 23-stop; 24-spring; 25-ball; 26-opening; Hole; 28-bolt; 3-adjustment device; 31 - limit adjustment block; 32-sliding groove; 33-hole; 34-stop pin; 35-positioning hole; 36-limit adjustment block upper edge; 41 - limit Adjustment block; 42-boom; 43-guide hole; 44-sinkhole; 45-return spring; 46-limit adjustment block upper edge; 47-gap; 51 - limit adjustment block; 52-hole; 53-positioning Pin hole; 54-pin shaft; 55-spring; 56-limit adjustment block upper edge; 57-gap; 6-center shaft; 7-pTZ connection plate; 8-pTZ; 9-locking sleeve mechanism; - rotating shaft center;

As shown in FIG. 1, FIG. 2 and FIG. 7, the present invention comprises a main body 1 and three leg tube assemblies 2, and a through hole 11 is provided in the main body 1. In order to lock the middle shaft, the upper end of the main body 1 also has a thread 16 and a lock. Tight sleeve mechanism 9. The portion of the main body 1 that cooperates with the center shaft 6 may have a honeycomb star shape, wherein the middle portion may have a cone 15 structure, the cone 15 has an arched through hole 14, and the arms of the extension arm 13 and the two sides of the arched through hole 14 The root of 141 is connected. The above-described honeycomb star shape portion may have other shapes as long as it is a structure that achieves the same function, and is within the scope of the present invention. Subject 1 has a limit The foot tube assembly 2 opens three angled blocks 12 with a plurality of teeth 121 and three equally angled extension arms 13 rotatably coupled to one end of the foot tube assembly 2. The extension arm 13 has a shaft hole 18, the end of the leg tube assembly 2 is provided with an opening portion 21, and the two side surfaces 26 of the opening portion 21 have a shaft hole 27 through which the shaft 17 passes through the shaft holes 27 and 18, so that the foot tube assembly 2 The opening portion 21 is in rotational connection with the extension arm 13. In order to fix the shaft 17 without axial movement, bolts 28 are provided at both ends of the shaft 17. Of course, the rotational connection of the extension arm 13 to the foot tube assembly 2 can also employ other conventional means in the art. Thus, the foot tube assembly 2 can be rotated on the extension arm 13 along the center 10 of the rotation axis of the rotation shaft 17. The limiting block 12 is a toothed lug having a plurality of teeth 121. The lateral length of the teeth extends through the entire lug, at the end of the extending arm 13 and coaxial with the extending arm 13, such that the teeth can be caught when the foot tube assembly is caught More stable. The connection between the foot tube assembly 2 and the main body 1 has an adjusting device 3 for abutting the leg tube assembly 2 with the teeth of the limiting block 12 or for rotating the foot tube assembly 180°. The adjusting device 3 can be of the following three structures. :

1. As shown in FIGS. 2 and 3, there are guide turns 22 below the two sides 26 of the opening portion 21 of the foot tube assembly 2, and a shaped limit adjustment block 31 having a guide groove 22 thereon is provided. The slide adjusting groove 31 is slidably fitted in the sliding groove. In order to prevent it from falling off the sliding groove, a stopper 23 is arranged on the guiding groove 22, and the wall of the corresponding sliding groove 32 is opened. The hole 33 is provided with a stopper pin 34 in the hole. When the limit adjustment block 31 is pulled out by a certain displacement, the stopper pin 34 is blocked by the stopper and can no longer slide, so that it does not fall off. In order to prevent the limit adjusting block 31 from being loosened when it is stuck with the teeth 121 of the limiting block 12, a spring 24 and a marble 25 are also provided on the stopper 23 of the guiding groove 22, and correspondingly cooperate with the guiding groove 22. The corresponding side of the sliding groove 32 is provided with at least one positioning hole 35 that cooperates with the marble 25. In the specific operation, if the foot tube assembly 2 is to be opened, the limit adjustment block 31 is pulled out, and under the action of the spring 24, the marble ball 25 falls into the positioning hole 35, and the upper edge 36 of the limit adjustment block 31 and the limit position The respective teeth 121 of the block 12 abut against each other to open the foot tube assembly to a certain angle. The degree of opening the limit adjustment block 31 is different, and the selected teeth 121 are different, and the opening angle is also different. The number of the teeth 121 of the marble ball 25 and the corresponding positioning hole 35 and the limiting block 12 may be several. When the limit adjustment block 31 is pulled out until it can no longer be pulled out, the inner radius of rotation of the upper edge 36 of the limit adjustment block 31 is greater than the maximum radius of the edge of the rotation axis 10 of the foot tube assembly 2 to the edge of the tooth 121 of the limit block 12. When the foot tube assembly rotates, the position of the block 12 is no longer restricted. It can achieve 180 degree rotation or reverse.

2. As shown in FIG. 4, the limit adjusting block 41 has a boss 42 and a guide hole 43 and a counterbore 44 are provided at the bottom of the opening portion 21 of the leg tube assembly 2. The boss 42 is sleeved with a return spring 45. Installed into the guide hole 43, one end of the return spring 45 abuts against the bottom edge of the counterbore 44, and the limit adjustment block 41 and the bottom of the opening portion 21 of the leg tube assembly 2 have a certain gap when the return spring 45 is in a free state. 47. The height of the gap 47 satisfies the following condition. When the limit adjustment block 41 is pressed to the limit, the inner radius of rotation of the upper edge 46 of the limit adjustment block 41 is greater than the maximum radius of the tooth center of the foot tube assembly 2 to the tooth edge of the limit block 12. . In a specific operation, the limit adjustment block 41 is pressed, and the protrusion 42 is moved downward in the guide hole 43 and the counterbore 44, so that the upper edge 46 of the limit adjustment block 41 abuts against the corresponding tooth 121 of the limit block 12, The foot tube assembly 2 is opened to a certain angle. Pressing the lower limit The degree of adjustment of the block 41 is different, the selected tooth 121 is different, and the opening angle is also different. When the limit adjustment block 41 is pressed to the limit, the movement of the foot tube assembly 2 is no longer restricted by the interference of the position block 12, and the 180 degree rotation or the reverse can be realized.

3. As shown in FIG. 5 and FIG. 6, the limit adjusting block 51 has a shape of a shape, and has two holes on both sides thereof. The two sides of the opening portion 21 are provided with positioning pin holes 53, and the pin shaft 54 passes through the positioning pin holes 53 and The hole 52 mounts the limit adjusting block 51 on the opening portion 21, and the pin shaft 54 is further provided with a spring 55. The limit adjusting block 51 and the bottom of the opening portion 21 of the leg tube assembly 2 are fixed when the spring is in a free state. The clearance 57, the height of the gap 57 is sufficient to satisfy the following condition, when the limit adjustment block 51 is pressed to the limit position, the inner rotation radius of the upper edge 56 of the limit adjustment block 51 is greater than the rotation axis center of the foot tube assembly 2 to the limit of 10 The maximum radius of the tooth edge of the bit block 12. In the specific operation, when the limit position adjustment block 51 is pressed, the limit adjustment block 51 rotates around the pin shaft 54, and the upper edge 56 of the limit adjustment block 51 and the corresponding position of the limit block 12 The teeth 121 abut against each other to open the foot tube assembly to a certain angle. The degree of pressing the limit adjusting block 51 is different, the selected teeth 121 are different, and the opening angle is also different. When the limit adjusting block 51 is pressed to the limit, the foot tube assembly is The rotation is no longer limited by the interference of the block 12, I.e., to achieve 180-degree reverse rotation.

As shown in Figs. 8 and 9, the main body 1 is attached to the upper center shaft 6, the upper portion of the center shaft 6, and the photographic head 8 connected thereto via the lock sleeve mechanism 9. When reverse folding on a tripod, the pan/tilt is protected in a tripod, and the length of the tripod remains small and easy to carry.

Claims

a margin, the limit adjustment block (41) and the bottom of the opening portion (21) of the leg tube assembly (2) have a certain gap (47) when the return spring (45) is in a free state, The height of the gap (47) is sufficient to satisfy the upper edge (46) of the limit adjustment block (41) having a larger inner radius of rotation than the foot tube assembly (2) when the limit adjustment block (41) is pressed to the limit. The center of the axis of rotation to the maximum radius of the edge of the limit block (12).

4. A reversibly foldable photographic tripod comprising a body (1) and three leg assemblies (2), the body (1) having a through hole (11) for mounting a central shaft, the body having a restriction The leg tube assembly (2) has three opening blocks (12) of an opening angle and three extending arms (13) rotatably connected to one end of the leg tube assembly (2), the leg tube assembly (2) The end of the end has an opening portion (21) rotatably coupled to the extension arm (13); the limiting block (12) is a tooth-shaped projection having a plurality of teeth (121), the lateral length of the tooth running through The entire bump is located at the end of the extension arm (13) and coaxial with the extension arm (13); the connection between each leg tube assembly (2) and the body (1) has a foot tube assembly (2) An adjusting device (3) that cooperates with the teeth (121) of the limiting block (12) or that rotates the foot tube assembly 180°, characterized in that: the adjusting device (3) is openable a limit adjustment block (51) for rotating the portion (21), wherein the limit adjustment block (51) has a hole (52) on both sides, and the leg tube assembly (2) is disposed on both sides of the opening portion (21) Locating pin hole (53), — pin (54) through The positioning pin hole (53) and the hole (52) mount the limit adjusting block (51) on the opening portion (21), and the pin shaft (54) is further provided with a spring (55), the limit adjusting block (51) and The bottom of the opening portion (21) of the foot tube assembly (2) has a certain gap (57) when the spring is in a free state, and the height of the gap (57) is sufficient to satisfy the adjustment block (51) to the limit position when the limit is pressed. The inner radius of rotation of the upper edge of the limit adjustment block (51) is greater than the maximum radius of the edge of the rotation axis of the foot tube assembly (2) to the edge of the limit block (12).

The photographic tripod according to any one of claims 1 to 4, wherein: the portion of the main body (1) that cooperates with the central axis is in the shape of a honeycomb star, wherein the middle is a cone (15) structure. The cone (15) has an arched through hole (14), and the arms of the extension arm (13) are connected to the roots of the two sides (141) of the arched through hole (14).

The photographic tripod according to claim 5, characterized in that: the upper end of the cone (15) of the main body (1) is provided with a thread (16) for locking the middle shaft and a locking sleeve mechanism (9).

7. The photographic tripod according to claim 6, further comprising: a central axis (6) cooperating with the through hole (11) of the main body (1), and a pan/tilt connection plate at the upper portion of the central axis (6) ( 7) and the photographic cloud connected to it