JPH0731404U - Furniture moving equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It can be installed stably even if there is unevenness on the floor during use, and the vertical moving plate can be smoothly moved up and down by operating the lever when moving. [Structure] Mounting frame 1 provided at the lower end of the legs of furniture such as chairs
In addition, a lever 4 is rotatably pivoted about a pivot in the left-right direction, and the lever 4 is rotated to rotate a cam 3 integrated with the lever 4 to move the vertical moving plate 2 into a compression coil spring 9. By pushing down against the urging force, the leg end tool 10 is levitated from the floor, and a pair of casters 7 provided on the lower surface of the vertical moving plate 2 closer to the center in the front-rear direction than the supporting rods 8 are brought into contact with the floor. I did it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a furniture moving device suitable for furniture such as chairs and tables, especially for connecting chairs for theaters.

[0002]

[Prior art]

 A connecting chair installed in a theater or the like that can be moved according to the purpose of use of the theater is disclosed in, for example, Japanese Utility Model Publication No. 56-44422 and Japanese Patent Publication No. 62-20921. With these conventional devices, when used as a chair, the base should be kept stable on the floor, and when it becomes necessary to move, the lever is used to raise the base above the floor and the casters below the base. By lowering it so that it protrudes and touching the floor, a heavy connecting chair can be smoothly moved and moved.

[0003]

[Problems to be solved by the device]

 However, in the conventional device as described above, a frame-shaped base that is long in the front-rear direction and the left-right direction is brought into contact with the floor surface. It causes rattling and makes the installation state of the connecting chair unstable. Also, the weight of the entire connecting chair becomes large, and a large force is required to rotate the lever to float above the floor. Further, in the device described in Japanese Patent Publication No. 62-20921, the lower ends of the front and rear supporting rods are fixedly connected to the long base in the front-rear direction, so that when the base is inclined and touches the floor, The load may break the supporting rod, and since this supporting rod is located near the center of the vertical moving plate, the vertical moving plate having casters at the front and rear ends is difficult to balance before and after lifting. In the device described in Japanese Utility Model Publication No. 56-44422, the guide cylinder for inserting the vertical moving plate and the tension spring are provided separately, so that the vertical moving plate is balanced before and after the lifting. In both cases, the slidability of the vertical moving plate is poor and smooth lifting is not possible.

An object of the present invention is to provide a furniture moving device that can be stably installed even when the floor surface is uneven during use, and that allows the vertical moving plate to be smoothly moved up and down by lever operation during movement.

[0005]

[Means for Solving the Problems]

 The present invention provides a pair of vertical fittings provided with horizontal mounting frames facing the front and rear at the lower ends of the legs of furniture, and lower ends of front and rear ends of the mounting frames, respectively, with leg end tools for landing on the lower ends. A support bar is provided, and a horizontal vertical moving plate facing the front-rear direction is inserted vertically at both ends of the support bar so that it can be moved up and down. A pair of casters is provided, and a compression coil spring for urging the vertical moving plate upward is contracted between the lower ends of the supporting rods and the lower surface of the vertical moving plate so as to contact the upper surface of the vertical moving plate. A cam pivotally attached to the center of the mounting frame so as to be rotatable about a pivot in the left-right direction, and is integrally rotated by a pivoting operation of a lever fixed to the pivot so as to resist the compression coil vane. Then, by pushing down the vertical moving plate, the leg end tool is levitated from the floor and the caster is lifted. The Ru moving device near furniture, characterized in that so as to Seyyuka.

[0006]

[Action]

 According to the present invention, when it is installed immovably on the floor of a theater or the like and is used as a connecting chair (furniture), the surface of the cam, which is pivotally attached to the mounting frame, in the direction in which the distance below is short is vertical. The upper and lower moving plates come into contact with the upper surface of the moving plate, and accordingly the vertical moving plate is lifted by the biasing force of the compression coil spring, the caster is located above the leg end tool, the caster is separated from the floor surface, and The leg end fittings provided at the lower ends of both supporting rods hung on the lower surface of the end are in contact with the floor.

When moving the connecting chair (furniture), when the lever is rotated, the cam is simultaneously rotated, and the surface of the cam in the direction of a long distance below the pivot contacts the upper surface of the vertical moving plate. Along with this, the vertical moving plate is pushed down in the direction of compressing the compression coil spring, the casters come into contact with the floor, and the leg end tools at the lower ends of both supporting rods suspended from the lower surfaces of the front and rear ends of the mounting frame rise above the floor surface. By moving away, the connecting chair can be moved and moved. When returning the movable chair from the movable state to the non-movable state, the lever may be rotated in reverse.

[0008]

【Example】

 1 to 3 show an embodiment of the moving device of the present invention. Reference numeral (1) is a mounting frame that is attached to the lower end of the legs of furniture such as a connecting chair. This mounting frame is in the shape of an elongated box with the lower surface open, and is located near both ends of the part that touches the upper surface of the box. A hole (1b) is drilled. A round hole (1a) is formed in the center of both long sides of the box.

A vertical moving plate (2) is housed inside the box-shaped mounting frame (1). The vertical moving plate (2) is formed by bending both ends of a slender plate material upward and then horizontally returning it again, and round holes (2a) are bored in the horizontal both ends. These round holes (2a) are provided at positions corresponding to the holes (1b) on the upper surface of the mounting frame (1). Casters (7) are attached to the lower surface of the middle part of the vertical moving plate (2) near both ends thereof.

A cam (3) is arranged at a central position between the mounting frame (1) and the vertical moving plate (2). The cam (3) has a round hole (3a) into which a shaft (4b) serving as a pivot is fitted, and a surface (3b) having a relatively long distance from the shaft and a surface (3b) having a relatively short distance ( 3c) and. Align the round hole (3a) of the cam (3) with the round holes (1a) on both sides of the mounting frame (1), and insert the shaft (4b) of the lever (4) there. It is stopped with a snap ring (5). A small screw (6) is screwed into a small hole (3d) formed in the side surface of the cam (3) and fixed to a screw hole (4c) of the lever (4). In this way, the cam (3) is integrated with the lever (4). Reference numeral (4a) is an operating rod of the lever (4).

A supporting rod (8) is vertically inserted through round holes (2a) at both ends of the vertical moving plate (2), and a top end of the supporting rod (8) is attached to an upper surface of the mounting frame (1). The support rods (8) are fixed to the mounting frame (1) by aligning with the holes (1b) and screwing bolts (11) from above. Since the supporting rod (8) is loosely fitted in the round hole (2a), the vertical moving plate (2) can be moved vertically by being guided by the supporting rod (8). A flange (8a) is formed at the lower end of the supporting rod (8), and a compression coil spring (9) is provided between the upper surface of the flange (8a) and the lower surface of the vertical moving plate (2). It is wound around (8) and contracted, and the vertical moving plate (2) is pushed up by the urging force of this compression coil spring (9). The leg end tool (10) is, for example, made by embedding a bolt (10a) in a hard elastic body, and the bolt (10a) is adjustable to a screw hole (8b) formed at the lower end of the supporting rod (8). The height of the supporting rod (8) can be adjusted by screwing it together.

With such a configuration, as shown in FIG. 2, when the surface (3c) of the cam (3) whose distance from the pivot is short is in contact with the upper surface of the vertical moving plate (2). The leg end (10) projects downward from the caster (7) and contacts the floor. From this state, the upper operation rod (4a) in FIG. 2 is pushed down to rotate the lever (4) counterclockwise in the same figure, and as shown in FIG. 3, the cam (3) integrated with the lever (4). When the surface (3b) whose distance from the pivot is longer contacts the upper surface of the upper and lower moving plates (2), the casters (7) project downward below the leg end fittings (10) and reach the floor. You will be able to touch it and move furniture such as connecting chairs easily. Further, from the state shown in FIG. 3, it is possible to return to the original state shown in FIG. 2 by pushing down the operation rod (4a) which is at the upper side at this time.

[0013]

[Effect of device]

 According to the present invention, a pair of vertical support rods, each of which has a floor end for the floor, are provided on the lower surfaces of the front and rear ends of the mounting frame, and furniture such as connecting chairs cannot be moved. When it is installed on the floor, the leg end fittings can stably contact even the uneven floor surface, and the furniture can be installed without tilting or rattling, and the weight can be reduced. Therefore, it is possible to rotate the lever that allows the furniture to be floated from the floor so that it can be moved with a small force. In addition, a vertical moving plate with both supporting rods inserted through the front and rear ends is attached to the vertical movement, and one pair of front and rear casters is installed on the lower surface of the vertical moving plate near the center in the front-rear direction. A compression coil spring that urges the plate upward is wound around both supporting rods, and is contracted between the vertical moving plate and the lower ends of both supporting rods, making it easier to balance the vertical movement plate before and after raising and lowering. The upper and lower moving plates that penetrate both support rods have excellent slidability and can move up and down smoothly.

Since the mounting frame is in the shape of a box with the lower surface open, and the structural members are built into this box, dust and the like do not adhere to the vertical moving plate and the compression coil spring that penetrate the supporting rod, which is a design It is also excellent (invention according to claim 2).

[0015] A leg end tool is screwed to the screw portions at the lower ends of both supporting rods hung on the lower surfaces of the front and rear ends of the mounting frame so that the furniture can be adjusted up and down to correspond to the unevenness of the floor surface. Stable installation can be performed more reliably (the invention according to claim 3).

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view of the moving device which is also in an immovable state.

FIG. 3 is a vertical sectional side view of the moving device, which is also in a movable state.

[Explanation of symbols]

 (1) Mounting frame (1a) Round hole (1b) Hole (2) Vertical moving plate (2a) Round hole (3) Cam (3a) Round hole (3b) Surface with relatively long distance from the pivot (3c) Axis (3d) Small hole (4) Lever (4a) Handle (4b) Shaft (4c) Operation rod (5) Snap ring (6) Small screw (7) Caster (8) Support rod ( 8a) Flange (8b) Screw hole (9) Compression coil spring (10) Leg end fitting (10a) Bolt (11) Bolt

Claims (3)

[Scope of utility model registration request] 1. A pair of vertical fittings, each of which is provided with a horizontal mounting frame facing the front and rear at the lower end of a leg of furniture and is provided on the lower surface of the front and rear ends of the mounting frame with a leg end tool for floor contacting at the lower end, respectively. A support rod is provided, and a horizontal up-and-down moving plate that faces the front-rear direction and has both support rods inserted through the front and rear ends is attached so as to be able to move up and down. A pair of casters is provided, and a compression coil spring for urging the vertical moving plate upward is contracted between the lower end portions of the both supporting rods and the lower surface of the vertical moving plate so as to contact the upper surface of the vertical moving plate. A cam pivotally mounted on the central portion of the mounting frame so as to be rotatable about a pivot in the left-right direction, and integrally rotated by a pivoting operation of a lever fixed to the pivot to resist the compression coil spring. By pushing down the vertical moving plate, the leg end tool is levitated from the floor and the caster is moved. A furniture moving device characterized by being brought into contact with the floor. 2. The movement of furniture according to claim 1, wherein the mounting frame has a box shape with an open lower surface, and at least both supporting rods, a vertical moving plate, a compression coil spring, and a cam are accommodated in the box-shaped mounting frame. apparatus. 3. The furniture moving apparatus according to claim 1, wherein a leg end tool is screwed on a screw portion formed on the lower ends of both supporting rods so as to be vertically adjustable.