JP2021021465A - Elongation/contraction strut - Google Patents

Abstract

To provide an elongation/contraction strut capable of rotating a strut part in a horizontal direction in the state where sliding movements of a strut in a vertical direction are fixed, the elongation/contraction strut being capable of easily moving the strut upward.SOLUTION: In an elongation/contraction strut 100, when an elongation lock mechanism 60 is unlocked, an elongation/contraction part 32 is automatically elongated and a strut part 30 is slid and moved upward. Therefore, user's labor may be remarkably reduced. A slide lock mechanism 50 of the elongation/contraction strut 100 fixes a vertical direction of the strut part 30 only by turning a grip 54a. In such a case, the slide lock mechanism 50 is capable of rotating an electric apparatus 5 even in a lock state without disturbing the rotation of the strut part 30 in a horizontal direction. Therefore, a configuration of the strut part 30 may be simplified and weight reduction of the strut part 30 is attained.SELECTED DRAWING: Figure 1

Description

The present invention relates to a support column used by installing an electric device on the upper portion, and more particularly to a telescopic support column capable of easily extending the support column.

For example, a construction vehicle, an emergency vehicle, or the like may require a lighting fixture that illuminates a work site, a speaker that outputs sound toward a target, or the like. Then, the inventors of the present application have made the inventions described in the following [Patent Document 1] and [Patent Document 2] as columns for electric devices that can be installed in such vehicles and the like. In the inventions described in [Patent Document 1] and [Patent Document 2], the user slides and locks the support column upward along the guide cylinder to lock the electric device attached to the support column upward. Can be positioned. Further, in the inventions described in [Patent Document 1] and [Patent Document 2], even when the position of the electric device is upward, the direction of the electric device is oriented in the horizontal direction (pan) by operating the handle provided at the lower part of the column. It can be freely changed between the direction) and the elevation direction (tilt direction).

Japanese Patent No. 5433613 Japanese Patent No. 6429654

However, the inventions described in [Patent Document 1] and [Patent Document 2] have a problem that the burden on the user is large because it is necessary to manually raise the relatively heavy support column installed by the electric device. is there. Further, in the inventions described in [Patent Document 1] and [Patent Document 2], since the horizontal rotating pipe can be rotated while the vertical sliding movement of the support column is fixed, the pipe is formed outside the rotating pipe. It is necessary to provide a body, and there is a problem that the structure becomes triple and complicated, and the weight of the support column increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a telescopic support that can easily raise a support. Another object of the present invention is to provide a telescopic support that enables the support to rotate in the horizontal direction while the slide movement of the support in the vertical direction is fixed.

The present invention
(1) The strut portion 30 held so as to be rotatable and slidable, and
A device holding portion 40 provided above the support column 30 while holding the electric device 5 and
A telescopic portion 32 that slides and moves the strut portion 30 in the vertical direction,
A telescopic strut having a slide lock mechanism 50 that locks the vertical movement of the strut portion 30.
The slide lock mechanism 50 includes a bearing 52 into which the support column 30 is inserted, a cylindrical bearing holding portion 54 for holding the bearing 52, and a holding hole 56 into which the bearing holding portion 54 is rotatably inserted. It has a main body 58 and
The center O2 of the bearing holding portion 54 is located at a position different from the central axis O1 of the strut portion 30, and when the bearing holding portion 54 rotates in the holding hole 56, the bearing 52 moves eccentrically and the strut The above problem is solved by providing the telescopic support column 100, which is characterized by pressing the portion 30 to prevent the support column portion 30 from sliding in the vertical direction while allowing the support column portion 30 to rotate in the horizontal direction.
(2) The above problem is solved by providing the telescopic support column 100 according to the above (1), wherein the bearing 52 is a needle bearing.
(3) Further having an extension lock mechanism 60 provided with claws 62a and 62b that hook the lower end portion of the support column portion 30 to prevent the extension / contraction portion 32 from extending.
A gas spring in which the telescopic portion 32 extends due to the protrusion of the rod 32a housed therein.
In the extension lock mechanism 60, the claw portions 62a and 62b are opened by an unlocking operation on the operation portion (open lever 66) to release the lower end portion of the support column portion 30, whereby the rod 32a is automatically released. The strut portion 30 protrudes and slides upward,
Further, by sliding the strut portion 30 downward and pressing the extension lock mechanism 60 with the strut portion 30, the claw portions 62a and 62b are closed to hook the lower end portion of the strut portion 30. The above-mentioned problem is solved by providing the telescopic support 100 according to the above (1) or (2).
(4) The strut portion 30 has an outer cylinder portion 13 and an inner cylinder portion 12 rotatably inserted into the outer cylinder portion 13.
The underframe 20 in which the device holding portion 40 is fixed to the upper end portion of the outer cylinder portion 13, the device holding frame 24 installed so as to be rotatable in the tilt direction with respect to the underframe 20, and the inner cylinder portion 12 A swivel arm 81 fixed to the upper end of the device and a link mechanism 83 for connecting the device holding frame 24 and the swivel arm 81 are provided, and the device holding frame 24 moves up and down in the tilt direction by rotation of the inner cylinder portion 12. And at the same time
The above-mentioned problem is solved by providing the telescopic support column 100 according to any one of the above (1) to (3), wherein the device holding frame 24 holds the electric device 5 detachably.

In the telescopic support according to the present invention, when the extension lock mechanism is unlocked, the support column automatically slides upward. Therefore, the labor of the user can be significantly reduced. Further, the slide lock mechanism of the telescopic support according to the present invention enables horizontal rotation in a state where the vertical slide movement of the outer rotating pipe (outer cylinder portion) is fixed. Therefore, it is possible to simplify the structure of the strut portion and reduce the weight.

It is a figure which shows the extended state of the telescopic column which concerns on this invention. It is a perspective view which shows the contraction state of the telescopic support which concerns on this invention. It is a schematic sectional drawing of the strut part of the telescopic strut according to this invention. It is a figure explaining the operation of the apparatus holding part of the telescopic support which concerns on this invention. It is a figure explaining the holding mechanism of the telescopic support which concerns on this invention. It is a figure explaining the holding mechanism of the telescopic support which concerns on this invention. It is a figure explaining the slide lock mechanism of the telescopic support which concerns on this invention. It is a figure explaining the extension lock mechanism of the telescopic support which concerns on this invention.

An embodiment of the telescopic support 100 according to the present invention will be described with reference to the drawings. Here, FIG. 1 is a diagram showing an extended state of the telescopic support 100 according to the present invention. Further, FIG. 2 is a perspective view showing a contracted state of the telescopic support column 100 according to the present invention. The telescopic support 100 according to the present invention is used by being fixed to an installation object 1 such as a special vehicle such as a fire-fighting vehicle or a construction vehicle, equipment, equipment, or a building via a guide cylinder 34, and is to be installed. A guide cylinder 34 fixed to an object 1, a strut portion 30 held in a movable state by the guide cylinder 34, a device holding portion 40 provided above the strut portion 30 for holding an electric device 5, and a strut portion. The telescopic portion 32 described later that slides and moves the 30 in the vertical direction, the slide lock mechanism 50 that locks the vertical movement of the strut portion 30, and the lower end portion of the strut portion 30 are hooked to prevent the extension and contraction portion from extending. It has an extension lock mechanism 60 and. The electric device 5 may be any type such as a floodlight, lighting, a speaker, a sound collecting microphone, a video camera, and an image display device.

Next, the configuration of the support column portion 30 and the device holding portion 40 will be described with reference to FIG. Here, FIG. 3 is a schematic cross-sectional view of the upper end portion and the lower end portion of the support column portion 30. First, the support column portion 30 has an outer cylinder portion 13 and an inner cylinder portion 12 rotatably inserted into the outer cylinder portion 13. Further, the underframe 20 of the device holding portion 40 is fixed to the upper end portion of the outer cylinder portion 13, and the swivel handle 13a is fixed to the lower end portion. Then, by turning the swivel handle 13a, the outer cylinder portion 13 rotates with respect to the guide cylinder 34, and the underframe 20 rotates in the horizontal direction. Further, a through hole is formed in the underframe 20, and the upper end portion of the inner cylinder portion 12 and the swivel arm 81 of the device holding portion 40 are fixed through the through hole. Further, the elevation handle 12a is fixed to the lower end of the inner cylinder portion 12 through the swivel handle 13a. Then, by turning the elevation handle 12a, the inner cylinder portion 12 rotates with respect to the outer cylinder portion 13, and the rotation of the inner cylinder portion 12 causes the swivel arm 81 to rotate in the horizontal direction.

Further, the underframe 20 has a substantially U-shape with the upper side open, and support shafts 23 are provided on the front sides of the left and right arms of the underframe 20. Then, the front sides of the left and right arms of the substantially U-shaped device holding frame 24 having an open upper portion like the underframe 20 are rotatably connected to the support shaft 23. As a result, the device holding frame 24 rotates in the front-rear direction with respect to the underframe 20 and the support column 30 about the support shaft 23. Then, by holding the electric device 5 by the device holding frame 24, the depression / elevation angle (tilt direction) of the electric device 5 can be changed. Further, the front side of the swivel arm 81 and the bottom of the device holding frame 24 are connected by a link mechanism 83 provided with a universal joint, and the horizontal rotational movement of the swivel arm 81 is centered on the support shaft 23 by the link mechanism 83. It is converted into a rotational movement (elevation movement) of the device holding frame 24 in the front-rear direction. That is, when the swivel arm 81 is rotated toward the front side in FIG. 2 by the elevation handle 12a, the link mechanism 83 operates so as to pull the device holding frame 24 toward the front side, whereby the device holding frame 24 is centered on the support shaft 23. It rotates to the front side. As a result, the electrical device 5 has an increased elevation angle and faces upward as shown in FIG. 4 (a). Further, when the swivel arm 81 is rotated to the back side of FIG. 2 by the depression / elevation handle 12a, the link mechanism 83 operates so as to push the device holding frame 24 to the back side, and the device holding frame 24 moves to the back side centering on the support shaft 23. Rotates to. As a result, the electrical device 5 has an increased depression angle and faces downward as shown in FIG. 4 (b).

Further, it is preferable that the device holding frame 24 of the device holding unit 40 holds the electric device 5 detachably. Here, the holding mechanism of the electric device 5 suitable for the present invention will be described with reference to FIGS. 5 and 6. 5A and 5B are perspective views of the device holding portion 40 in the state where the holding mechanism is open, and FIG. 6A is a schematic configuration diagram from the upper surface direction in the state where the holding mechanism is closed, and FIG. 6B is shown in FIG. Is a schematic configuration diagram from the side direction.

The holding mechanism of the electric device 5 suitable for the present invention includes holding plates 42a and 42b rotatably connected to the device holding frame 24 via a hinge 41 and the like, and a click that locks these holding plates 42a and 42b in a closed state. It has a well-known device lock mechanism 46 such as a lock. Further, a fixing plate 10 is provided on the electric device 5 side to be sandwiched and fixed by the holding plates 42a and 42b. It is preferable that the electric device 5 is provided with a leg portion 7 so that the electric device 5 can be placed on the ground or the like and used independently, and it is particularly preferable to provide the fixing plate 10 on the leg portion 7. Further, it is preferable that the leg portion 7 and the main body portion of the electric device 5 are connected to each other via a rotation shaft having a stopper function, and the depression / elevation angle can be adjusted even when the electric device 5 is used alone. A holding mechanism suitable for the present application is to close the holding plates 42a and 42b with the fixing plate 10 of the electric device 5 placed at a predetermined position on the device holding frame 24 and lock the holding plates 42a and 42b by the device locking mechanism 46. The fixing plate 10 of the electric device 5 is sandwiched and fixed between the device holding frame 24 and the holding plates 42a and 42b. Further, when the electric device 5 is removed from the device holding portion 40, the locked state of the device locking mechanism 46 is released and the holding plates 42a and 42b are opened. As a result, the fixing plate 10 is released and the electric device 5 can be removed. In this configuration, the electric device 5 can be removed from the telescopic support 100 as needed and used independently. As a result, the electric device 5 can be flexibly utilized according to the site and the situation.

Next, the expansion / contraction portion 32 of the expansion / contraction support column 100 according to the present invention will be described. The telescopic portion 32 according to the present invention is provided on the strut portion 30, and operates so as to constantly push up the strut portion 30 upward. As the telescopic portion 32, it is particularly preferable to use a gas spring in which the rod 32a protrudes and extends due to the internal gas pressure. When a gas spring is used for the telescopic portion 32, it is most preferable to install the gas spring in the inner cylinder portion 12 as shown in FIG. Then, in the configuration in which the gas spring is used for the expansion / contraction portion 32, when the extension lock mechanism 60 described later is opened to release the support column portion 30, the rod 32a automatically protrudes from the lower end of the inner cylinder portion 12 and the support column portion 30 And the device holding portion 40 are pushed upward and slid. In the telescopic portion 32, two gas springs are provided in a row in the inner cylinder portion 12, the outer (lower side) gas spring can be slidably moved, and the strut portion 30 is pushed up by the two gas springs by the telescopic portion 32. The travel distance may be approximately doubled.

Next, the slide lock mechanism 50 of the present invention will be described with reference to FIG. Here, FIG. 7 (a) is a schematic cross-sectional view from the side of the slide lock mechanism 50, FIG. 7 (b) is a schematic cross-sectional view taken along line XX in the unlocked state, and FIG. 7 (c) is a schematic cross-sectional view. It is a schematic cross-sectional view of XX line in a locked state. The slide lock mechanism 50 of the present invention includes a bearing 52 into which the support column 30 is inserted, a cylindrical bearing holding portion 54 for holding the bearing 52, and a holding hole 56 into which the bearing holding portion 54 is rotatably inserted. It has a main body 58 having the holding hole 56. As the bearing 52, a cylindrical rolling element (roller) is arranged so as to be exposed on the inner peripheral surface, and a needle bearing (needle-shaped roller bearing) in which the strut portion 30 (outer cylinder portion 13) and the rolling element come into direct contact with each other. ) Is preferably used. Further, the inner diameter of the bearing 52 is slightly larger than the outer diameter of the strut portion 30 (outer cylinder portion 13), and the strut portion 30 can be slid in the vertical direction (vertical direction). The main body 58 of the slide lock mechanism 50 is preferably provided on the guide cylinder 34 fixed to the installation object 1. In particular, the slide lock mechanism 50 of the present invention is configured so that the center O2 of the bearing holding portion 54 and the holding hole 56 and the central axis O1 of the strut portion 30 are eccentric at different positions.

Then, in the state of FIG. 7B in which the slide lock mechanism 50 is in the unlocked state, the central axis O1 of the support column 30 and the central axis of the bearing 52 are located substantially concentrically. At this time, since the inner diameter of the bearing 52 is slightly larger than the outer diameter of the strut portion 30 as described above, the bearing 52 and the strut portion 30 are in a substantially non-contact state, and the strut portion 30 rotates in the horizontal direction. In addition, it can be slid in the vertical direction. Further, when the slide lock mechanism 50 is locked, for example, the user grips and rotates the grip 54a fixed to the bearing holding portion 54. As a result, the bearing holding portion 54 rotates in the holding hole 56. At this time, since the center O2 of the bearing holding portion 54 and the holding hole 56 and the central axis O1 of the strut portion 30 are eccentric, the bearing 52 rotates in the horizontal direction with respect to the strut portion 30 when the bearing holding portion 54 rotates. Eccentric movement to. As a result, as shown in FIG. 7C, the rolling element of the bearing 52 (needle bearing) comes into contact with the outer peripheral surface of the support column 30, and presses the support column 30 in the direction indicated by the black arrow in the figure, for example. Here, the rolling element of the needle bearing is cylindrical and rotates in the horizontal direction but does not rotate in the vertical direction. Therefore, by pressing the bearing 52 against the strut portion 30, the vertical movement of the strut portion 30 is hindered, and the movement in this direction is locked. However, the bearing 52 does not hinder the horizontal rotation of the strut portion 30 (outer cylinder portion 13) even when the strut portion 30 is pressed (unless the pressing force is excessive). Therefore, even if the slide lock mechanism 50 is in the locked state, the horizontal rotation of the outer cylinder portion 13, that is, the turning operation of the device holding portion 40 (electrical device 5) can be performed without any trouble.

Next, the extension lock mechanism 60 of the present invention will be described with reference to FIG. Here, FIGS. 8 (a) and 8 (b) are perspective views and side views showing an open state of the extension lock mechanism 60 of the present invention, and FIG. 8 (c) is a perspective view showing a closed state. The extension lock mechanism 60 suitable for the present invention shown in FIG. 8 has a mounting stay 70 having a bottom portion 78 with which the tip of the rod 32a abuts and fixed to the installation object 1, and left and right portions for engaging the lower end portions of the support columns 30. 62a, 62b, an opening / closing lock portion (movable hook 64a, fixed hook 64b) that locks the claw portions 62a, 62b in the closed state, and an operating portion (open lever 66) that releases the locked state of the opening / closing lock portion. ) And. The claw portions 62a and 62b are formed by notches larger than the diameter of the strut portion 30 and smaller than the diameter of the swivel handle 13a, and are shown in FIG. 8C when the claw portions 62a and 62b are closed. The upper end of the swivel handle 13a is hooked to prevent the expansion / contraction portion 32 from extending. Further, the lower ends of the claws 62a and 62b are installed on the mounting stay 70 via the hinge 72, for example, so that the claws 62a and 62b can be opened and closed. Further, a well-known elastic member 76 such as a spring is provided between the claw portions 62a and 62b to urge the left and right claw portions 62a and 62b in the opening direction. Further, tuning gears 74a and 74b are provided below the claws 62a and 62b, and when these are engaged, the claws 62a and 62b open and close symmetrically. Further, at the bottom of the claws 62a and 62b, for example, a rotating plate 79 that closes the claws 62a and 62b by lowering the elevation handle 12a is provided.

Further, the opening / closing lock portion of the extension lock mechanism 60 is, for example, a U-shaped fixed hook 64b provided on one of the claw portions 62a and 62b (in this example, the left claw portion 62b) and the other (right in this example). It has a movable hook 64a provided on the claw portion 62a) and provided with a movable claw. Then, when opening the claws 62a and 62b, the user pushes down the open lever 66 as an unlocking operation. As a result, the claws of the movable hook 64a rotate, the fixed hook 64b is disengaged from the movable hook 64a, and the extension lock mechanism 60 is unlocked. Then, when the extension lock mechanism 60 is unlocked, the claws 62a and 62b are automatically opened by the elastic force of the elastic member 76, whereby the swivel handle 13a of the support column 30 is released. When the swivel handle 13a is released, the rod 32a of the telescopic portion 32 protrudes, whereby the strut portion 30 slides upward as shown in FIGS. 8A and 8B. Further, when closing the claws 62a and 62b, the support column 30 is lowered so that the elevation handle 12a comes into contact with the rotating plate 79 of the claws 62a and 62b and pushes it downward. As a result, the left and right claws 62a and 62b are closed around the hinge 72, and the fixed hook 64b is inserted into the movable hook 64a to press the trigger of the claw. As a result, the claws rotate to block the entrance and exit of the fixed hook 64b, and the claws 62a and 62b are locked in the closed state.

Next, the operation of the telescopic support 100 according to the present invention will be described. First, when the telescopic support 100 is on standby, the rod 32a of the telescopic portion 32 is in a contracted state in which it is housed. At this time, the claws 62a and 62b of the extension lock mechanism 60 are in the closed state, and as shown in FIG. 8C, the claws 62a and 62b hook the upper end of the swivel handle 13a and the telescopic portion 32 is used. It is blocking the elongation.

Next, the desired electric device 5 is installed in the device holding unit 40. To install the electric device 5 on the device holding unit 40, the fixing plate 10 of the electric device 5 is placed at a predetermined position on the device holding frame 24 with the holding plates 42a and 42b open as described above, and in this state. This is performed by closing the holding plates 42a and 42b and locking them with the device lock mechanism 46.

Next, when extending the telescopic support 100, the user operates the open lever 66 of the extension lock mechanism 60. As a result, the claws of the movable hook 64a rotate, the fixed hook 64b is released, and the extension lock mechanism 60 is unlocked. When the extension lock mechanism 60 is unlocked, the claw portions 62a and 62b are automatically opened by the elastic force of the elastic member 76, whereby the swivel handle 13a hooked by the claw portions 62a and 62b is released. .. At this time, if the slide lock mechanism 50 is in the unlocked state, the rod 32a of the telescopic portion 32 operates so as to protrude from the lower end of the strut portion 30 due to the internal gas pressure. Here, since the tip of the rod 32a is in contact with the bottom portion 78 of the mounting stay 70 fixed to the installation object 1, the support column portion 30 is pushed up by the protrusion of the rod 32a, whereby the support column portion 30 of the telescopic support column 100 is pushed up. Slides upward along the guide tube 34. At this time, if the force of the telescopic portion 32 is insufficient, the user may assist the slide movement. Even in this case, since the force from the telescopic portion 32 acts on the strut portion 30 upward, the user can raise the strut portion 30 with far less effort than the conventional strut.

Then, when the telescopic portion 32 extends and the electric device 5 reaches the target height, the user turns the grip 54a of the slide lock mechanism 50. As a result, the bearing holding portion 54 rotates in the holding hole 56, and the bearing 52 moves in the horizontal direction to press the strut portion 30. As a result, the sliding movement of the support column 30 in the vertical direction is locked, and the electric device 5 is fixed at this height.

Next, the user operates the electric device 5 by using a remote controller or the like. Further, when the user turns the swivel handle 13a, the outer cylinder portion 13 rotates, whereby the electric device 5 rotates in the horizontal direction together with the device holding frame 24 and the underframe 20. As a result, the electric device 5 can be directed in the desired direction. Further, when the user turns the elevation handle 12a, the swivel arm 81 of the device holding portion 40 rotates with respect to the underframe 20, and the link mechanism 83 connected to the swivel arm 81 pushes and pulls the lower part of the device holding frame 24. .. As a result, the device holding frame 24 rotates back and forth around the support shaft 23, whereby the depression / elevation angle of the electric device 5 changes, and the electric device 5 can be directed to a target angle.

Next, when the telescopic support 100 is contracted, the user first turns the grip 54a of the slide lock mechanism 50 in the unlocking direction. As a result, the bearing holding portion 54 rotates in the holding hole 56 in the unlocking direction, and the bearing 52 moves in the horizontal direction. Then, at a specific position, the central axis of the bearing 52 and the central axis O1 of the strut portion 30 are substantially coaxial. At this time, the bearing 52 is in a state of being substantially non-contact with the outer peripheral surface of the strut portion 30, and the strut portion 30 can move in the vertical direction.

Next, the user slides the strut portion 30 downward. In the conventional strut, when the slide lock is released, the load of the strut and the electric device 5 is applied at once, and the user needs to carefully lower the strut while supporting the strut. However, in the telescopic support 100 according to the present invention, since the extension operation of the expansion / contraction portion 32 supports the load of the support column 30 and the electric device 5, the user can easily lower the support column 30.

Due to the downward sliding movement of the support column 30, the rod 32a is housed in the expansion / contraction portion 32, and the expansion / contraction support column 100 contracts. Then, at the final stage of contraction of the telescopic portion 32, the lower end of the elevation handle 12a comes into contact with the rotating plates 79 of the claw portions 62a and 62b, and pushes them downward. As a result, the left and right claws 62a and 62b are closed around the hinge 72. Then, the fixed hook 64b is inserted into the movable hook 64a to press the internal trigger. As a result, the claws rotate to block the entrance and exit of the fixed hook 64b, and the claws 62a and 62b are locked in the closed state. As a result, the claws 62a and 62b hook the swivel handle 13a to prevent the support column 30 from rising, and the support column 30 is held in a contracted state.

As described above, in the telescopic support 100 according to the present invention, when the extension lock mechanism 60 is unlocked, the expansion / contraction portion 32 automatically extends and the support column 30 slides upward. Therefore, the labor of the user can be significantly reduced. Further, when the strut portion 30 is lowered to the lowest point, the claw portions 62a and 62b of the extension lock mechanism 60 automatically close and lock the strut portion 30. Therefore, the user can contract and lock the telescopic support column 100 only by lowering the support column portion 30.

Further, the slide lock mechanism 50 according to the present invention fixes the support column 30 in the vertical direction only by turning the grip 54a. At this time, the slide lock mechanism 50 does not prevent the support column 30 from rotating in the horizontal direction, and the electric device 5 can be rotated even in the locked state. Therefore, the configuration of the strut portion 30 can be simplified, and the weight of the strut portion 30 can be reduced.

Further, the telescopic support 100 according to the present invention holds the electric device 5 detachably. Therefore, the electric device 5 can be removed from the telescopic support column 100 and used independently. As a result, the electric device 5 can be flexibly utilized according to the site and the situation.

The configuration, shape, operation mechanism, dimensions, design, etc. of the telescopic support column 100, the support column portion 30, the device holding portion 40, the slide lock mechanism 50, the extension lock mechanism 60, and other parts shown in this example are examples. The present invention can be modified and implemented without departing from the gist of the present invention.

5 Electrical equipment
12 Inner cylinder
13 Outer cylinder
20 underframes
24 Device holding frame
30 props
32 Telescopic part
32a rod
40 Device holder
50 slide lock mechanism
52 bearing
54 Bearing holder
56 Holding hole
58 body
60 Extension lock mechanism
62a, 62b claws
81 swivel arm
83 Link mechanism
100 telescopic support

Claims (4)

With a support that is held so that it can rotate and slide,
A device holding portion provided above the support column while holding the electrical equipment, and
A telescopic part that slides the strut part in the vertical direction and
A telescopic support having a slide lock mechanism for locking the vertical movement of the support.
The slide lock mechanism has a bearing into which the support column is inserted, a cylindrical bearing holding portion for holding the bearing, and a main body portion having a holding hole into which the bearing holding portion is rotatably inserted. ,
The center of the bearing holding portion is located at a position different from the central axis of the strut portion, and when the bearing holding portion rotates in the holding hole, the bearing moves eccentrically to press the strut portion, and the strut portion is pressed. A telescopic support that is characterized by preventing vertical sliding movement while allowing horizontal rotation of the bearing. The telescopic support according to claim 1, wherein the bearing is a needle bearing. Further having an extension lock mechanism provided with a claw portion that hooks the lower end portion of the support portion to prevent the extension and contraction portion from extending.
A gas spring in which the telescopic portion extends due to the protrusion of a rod housed therein.
In the extension lock mechanism, the claw portion is opened by an unlocking operation on the operation portion to release the lower end portion of the support portion, whereby the rod automatically protrudes and the support portion slides upward. And
The claim is also characterized in that the claw portion closes and the lower end portion of the strut portion is hooked by sliding the strut portion downward and pressing the extension lock mechanism with the strut portion. 1 or the telescopic support according to claim 2. The strut portion has an outer cylinder portion and an inner cylinder portion rotatably inserted into the outer cylinder portion.
The device holding portion was fixed to the underframe fixed to the upper end portion of the outer cylinder portion, the device holding frame rotatably installed in the tilt direction with respect to the underframe, and the upper end portion of the inner cylinder portion. A swivel arm and a link mechanism for connecting the device holding frame and the swivel arm are provided, and the device holding frame moves up and down in the tilt direction due to the rotation of the inner cylinder portion.
The telescopic support according to any one of claims 1 to 3, wherein the device holding frame holds the electric device in a detachable manner.

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