JP2001221396A - Elevating stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevating stand capable of easily and vertically moving a support member for supporting an article. SOLUTION: A feed screw 2 and a nut 3 to be screwed to the feed screw 2 are provided in a strut pipe 6 of an elevating stand 1, a guide grove 6a having the specified length is axially provided on the strut pipe 6, a rotation preventing member 4 to be guided by the guide prove 6a is fixed to the nut 3 together with a moving body 5 having support members 20, 21 for supporting an article 3, and the support members 20, 21 are vertically moved by a driving means 1 for rotating the feed screw 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting stand capable of easily moving a support member for supporting an article up and down.

[0002]

2. Description of the Related Art An ordinary stand has a structure in which a support member for supporting an article is provided on a column, and the height of the support member can be manually adjusted. For example, in a camera tripod, a camera holding member that holds a camera is fixed to a rack, and the camera holding member moves up and down together with the camera by turning a pinion that meshes with the rack with a manual handle.

[0003]

For example, when a conventional stand is a tripod for a camera, when photographing in a studio, the photographer corrects the pose or costume of the subject or measures the luminous intensity. However, since the height of the camera must be manually adjusted with a camera tripod, the photographer has to go back and forth between the subject side and the camera side many times, and the workability is poor and troublesome.

Further, when other articles such as a microphone, a light, a strobe, a screen, and the like are attached to the stand, the workability is poor because the height must be manually adjusted.

An object of the present invention is to solve such a problem of the prior art, and an object of the present invention is to provide an elevating stand capable of easily moving a support member for supporting an article up and down.

[0006]

The lifting stand according to the present invention has a feed screw in a support tube of the stand and a nut screwed to the feed screw, and the support tube has a guide groove having a predetermined length in the axial direction. An anti-rotation member guided by the guide groove is fixed to a nut together with a moving body having a support member for supporting the article, and the support member moves up and down by driving means for rotating the feed screw. ing.

According to the above construction, when the drive means is controlled to rotate the feed screw, the rotation of the nut screwed to the feed screw is stopped by the rotation preventing member, so that the rotation preventing member is guided by the guide groove. While moving, the moving body fixed to the nut moves up and down in the axial direction together with the support member. Therefore, it is possible to easily adjust the supporting member of the elevating stand up and down by controlling the driving means to a desired position, thereby improving workability.

Another elevating stand according to the present invention has a feed screw and a nut screwed into the feed screw in a column tube of the stand, and the column tube has a guide engaging portion having a predetermined length in the axial direction. An anti-rotation member guided by the guide engaging portion is fixed to a nut together with the tubular body. The tubular body has an outer shape that is loosely inserted into a support tube, and a support member for supporting an article at a distal end thereof is provided. The support member is fixed, and the support member moves up and down by driving means for rotating the feed screw.

According to the above construction, when the drive means is controlled to rotate the feed screw, the rotation of the nut screwed to the feed screw is stopped by the rotation preventing member. , The cylindrical body fixed to the nut moves up and down in the axial direction together with the support member. Therefore, it is possible to easily adjust the supporting member of the elevating stand up and down by controlling the driving means to a desired position, thereby improving workability.

Further, in this configuration, since the support member is fixed to the tip of the tubular body loosely inserted into the support tube, and the feed screw and the tubular body are arranged in an axially overlapping manner. It is possible to reduce the total length of the elevating stand when retracted by that much.

[0011] If the above-mentioned lifting stand is configured to be remotely operated, it is possible to operate the lifting stand while performing other work at a position away from the lifting stand, thereby improving operability and workability. improves.

The elevating stand described above is suitable for use as a camera stand.

[0013]

Embodiments of the present invention will be specifically described below with reference to the drawings.

(First Embodiment) FIGS. 1 and 2 show a configuration example of a lifting stand 1 according to a first embodiment of the present invention.

The lifting stand 1 has a feed screw 2 in a support tube 6 and a nut 3 screwed to the feed screw 2.
A guide groove 6 a having a predetermined length is formed in the support tube 6 in the axial direction. The rotation preventing member 4 guided by the guide groove 6a
Is fixed to the nut 3 together with the moving body 5 having the supporting members 20 and 21 for supporting the article. By controlling the driving means 10 for rotating the feed screw 2 by remote control, the supporting members 20 and 21 move up and down. Here, the video camera 22 is attached to the support member 20 via the holder 22a, and the holder 2 is attached to the support member 21.
An example is shown in which the strobe light 23 is mounted via 3a.

More specifically, the elevating stand 1 has a feed screw 2 and a nut 3 screwed to the feed screw 2 in a support pipe 6 suspended from a leg 14, and one end of the feed screw 2 is The other end is connected to a driving means 10 provided in the leg 14, and the other end is supported by a holding member 16 press-fitted into the end of the support tube 6 via an oil-impregnated bearing 15 or the like. Further, a cap 17 is fitted on the upper end of the support tube 6.

The drive means 10 has a reduction gear 12 connected to a drive shaft of a motor 11 fixed to a support 18, and a feed screw 2 connected to an output shaft 13.
The driving means 10 is housed inside the legs 14 and covered with a cover 19. The driving means 10 is configured to be controlled by a remote control using a known radio wave method, an infrared method, or the like. Specifically, a receiver 24 is provided below the support tube 6, and a controller 25 for controlling the forward / reverse rotation of the motor 11 is housed in the leg 14.
5. While connecting the motor 11 with the electric wires 27 and 28,
Power is supplied from the electric wire 29. And
By operating the UP button 26a or the DOWN button 26b of the operation remote controller 26, which is a transmitter, the driving unit 10 is controlled by radio waves to rotate the motor 11 forward and backward.

The moving body 5 has an inside diameter that allows it to be loosely inserted into the support tube 6, and a sliding member 9 press-fitted into the inside diameters of both end faces.
The structure is such that it can be moved up and down by being guided by the outer surface of the support tube 6. The movable body 5 is fixed to a ring body 7 press-fitted into the outer diameter portion of the nut 3 by a boss 5a with a bolt 8 with the rotation preventing member 4 interposed therebetween. The rotation preventing member 4 has such a width that both side surfaces thereof are guided by the guide grooves 6 a of the support tube 6.

According to the above configuration, the driving means 1 is remotely operated.
When the feed screw 2 is rotated by controlling the rotation of the feed screw 2, the rotation of the nut 3 screwed to the feed screw 2 is restrained by the rotation preventing member 4. The moving body 5 fixed to the support member 2
It moves up and down together with 0 and 21 in the axial direction indicated by the arrow. Therefore, the support members 20 and 21 of the elevating stand 1 can be moved up and down by remote control to easily adjust to a desired position.
Workability is improved.

(Second Embodiment) FIGS. 3 and 4 show a configuration example of a lifting stand 30 according to a second embodiment of the present invention.

The elevating stand 30 includes a feed screw 31 in a support tube 36 and a nut 3 screwed to the feed screw 31.
The guide tube 36 has a guide engagement portion 36a formed over the entire length in the axial direction. This guide engagement portion 3
An anti-rotation member 34 guided by 6a is fixed to a nut 32 together with a tubular body 33. The tubular body 33 has an outer shape that is loosely inserted into a support tube 36, and has a support for supporting an article at its distal end. The member 34 is fixed by welding or the like. By controlling the driving means 40 for rotating the feed screw 31 by remote control, the support member 34 moves up and down. The support member 34 of the lifting stand 30
Are used by attaching articles such as a camera, a microphone, lighting, a strobe, and a screen with a fixture.

More specifically, the lifting stand 30 is
A feed screw 31, a nut 32 screwed to the feed screw 31, and a nut 32
The cylindrical body 3 fixed by the mounting holes 33a by driving the rotation prevention member 34 having a driving pin shape into the mounting holes 32a
3 and one end of the feed screw 31 is connected to a driving means 40 provided on the leg 39. The outer diameter of the rotation preventing member 34 corresponds to the width of the guide engaging portion 36a of the support tube 6. A cap 35 is fitted on the upper end of the support tube 36.

The driving means 40 has a motor 41 fixed to a support 45, a worm 42 attached to a driving shaft thereof, and a worm wheel 43 meshing with the worm 42. Center axis 4
4 and the feed screw 31 are connected to the mounting holes 37a of the connecting member 37,
The connection is achieved by driving a driving pin 38 into 37b. The driving means 40 is accommodated in the lower part of the leg 39, and the cover 46 is fixed to the mounting hole 45a of the support 45 by the screw 47 with the mounting hole 46a so that the drive transmission mechanism is covered with the cover 46.

The driving means 40 is configured to be remotely controlled by a known radio wave method, infrared ray method, or the like. Specifically, a receiver 48 is provided on the upper part of the leg 39, and a controller 49 for controlling the forward / reverse rotation of the motor 41 is connected to the leg 3.
9, the receiver 48, the controller 49, and the motor 41 are connected by electric wires 51 and 52, and power is supplied from the electric wire 53. Then, the UP button 26a of the operation remote controller 26 which is a transmitter or DOW
By operating the N button 26b, the driving means 40 is controlled by radio waves to rotate the motor 41 forward and backward.

According to the above configuration, the driving means 4 is remotely operated.
0 and the feed screw 31 is rotated, the feed screw 3
Since the rotation of the nut 32 screwed into the nut 1 is restricted by the rotation preventing member 34, the cylindrical member 33 fixed to the nut 32 is supported by the supporting member 34 while the rotation preventing member 34 is guided by the guide engaging portion 36a. Together with this, it moves up and down in the axial direction indicated by the arrow. Therefore, the support member 34 of the elevating stand 30 can be moved up and down by remote control to easily adjust it to a desired position, thereby improving workability.

Further, in this configuration, the support member 34 is fixed to the distal end of the tubular body 33 loosely inserted into the support tube 36, and the feed screw 31 and the tubular body 36 are overlapped in the axial direction. Since it is arranged, the elevating stand 30 when retracted
Can be reduced accordingly.

As described above, the lifting stand according to the present invention is not limited to the specific configuration of each of the above-described embodiments, and it is needless to say that the configuration may be modified, added, or deleted as needed.

For example, in the above, an example has been shown in which the lifting stand is remotely controlled wirelessly using a radio wave system, an infrared system, or the like. However, the present invention is not limited to this. It may be configured to be connected by a wire and operated remotely.

Further, in the above, an example of the configuration of the drive transmission mechanism that rotates the feed screw by a motor via a speed reducer as the drive means has been described, but the present invention is not limited to this, and the drive screw may be provided with a motor. May be directly connected.

[0030]

As described above, according to the elevating stand of the present invention, it is possible to easily adjust the supporting member of the elevating stand up and down to a desired position by controlling the driving means. Is improved.

Further, when the support member is fixed to the tip of the tubular body loosely inserted into the support tube and the feed screw and the tubular body are arranged so as to overlap in the axial direction, the elevating stand when retracted is provided. Can be reduced accordingly.

If the lifting stand is configured to be remotely operated, the lifting stand can be operated while performing other operations at a position away from the lifting stand, thereby improving operability and workability. I do.

The elevating stand of the present invention is suitable for use as a camera stand.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a configuration example of a lifting stand according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a PP cross section of FIG.

FIG. 3 is a front view showing a configuration example of a lifting stand according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a configuration example of a lifting stand according to a second embodiment of the present invention.

[Explanation of symbols]

 1,30 Lifting stand 2,31 Feed screw 3,32 Nut 4,34 Anti-rotation member 5 Moving body 6,36 Support tube 6a Guide groove 10,40 Driving means 20,21,34 Support member 33 Cylindrical body 36a Guide Joint

Claims (4)

[Claims] A feed screw and a nut screwed to the feed screw are provided in a support pipe of a stand. The support pipe has a guide groove having a predetermined length in an axial direction, and a rotation guided by the guide groove. An elevating stand, wherein the prevention member is fixed to a nut together with a movable body having a support member for supporting the article, and the support member is moved up and down by driving means for rotating a feed screw. 2. A stand having a feed screw and a nut screwed into the feed screw in a support tube of the stand, wherein the support tube has a guide engagement portion having a predetermined length in an axial direction. A guided rotation preventing member is fixed to a nut together with a tubular body, the tubular body has an outer shape loosely inserted into a support tube, and a support member for supporting an article is fixed at a tip end thereof, and a feed screw is provided. A lifting / lowering stand characterized in that the supporting member is moved up and down by a driving means for rotating the lifting device. 3. The lifting stand according to claim 1, wherein the lifting stand can be remotely operated. 4. The lifting stand according to claim 1, wherein the lifting stand is a camera stand.