JPH0678318U - Support structure for moving heavy objects - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The moving member protrudes from the bottom surface of the heavy object during movement,
Provided is a support structure for moving a heavy object that can be easily moved. [Structure] Fixed frame 2 in lower end of heavy object, movable frames 35, 3 movable up and down under the guidance of fixed frame 2.
6, on both sides of the central axis of the fixed frame 2, a link device 6 connecting these frames, a flexible pressure container 4 between these frames, a moving member for the movable frames 35 and 36, and a fixed frame 2 mounted and moved. The movable member is provided with a stopper 23 for restricting vertical movement of the movable frame so that the member for projecting from the lower end portion of the heavy load and from the lower end surface of the heavy load can be stationary. There are two sets of links 61, 62 and 63, 64 supported, and the links 61, 62 and 63, 64 are pivotally supported by the two frames at the upper and lower ends of the X-shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a moving support structure for facilitating the movement of heavy objects. Such heavy items include partition furniture, counters, tables, storage furniture, stand-up vending machines, and decorative installations.

[0002]

[Prior art and its problems]

 The above heavy objects often have difficulty in moving once they are installed, and therefore, usually casters are arranged at the lower end. However, because the load of heavy objects is supported only by the casters, the installation state becomes unstable, and the load is concentrated on the casters, so the installation surface is deformed due to long-term installation, and the installation condition during the installation period is In terms of stability and aesthetics, it is often not desirable that the moving members such as casters are always installed.

The object of the present invention is to solve the above-mentioned problems, to enable stable installation by the lower end surface of a heavy object during the installation period, and to move the moving member downward from the heavy object when it is necessary to move. Another object of the present invention is to provide a support structure for moving a heavy object that can be easily projected and moved.

[0004]

[Means for solving the problem]

 In order to solve the above-mentioned problems, the present invention comprises a horizontally extending top plate, a fixed frame fixed in the lower end of a heavy object to be supported, and a horizontally extending bottom plate in the lower end of the heavy object. A movable frame that is vertically movably mounted under the guide of the fixed frame; a plurality of pairs of link devices that are provided on both sides of the central axis of the fixed frame and that connect the fixed frame and the movable frame; A flexible pressure container having a connection part for air supply and exhaust and interposed between the top plate of the fixed frame and the bottom plate of the movable frame, a moving member provided on the bottom surface of the bottom plate of the movable frame, and attached to the fixed frame. And restricts the vertical movement of the movable frame so that the moving member stops at the position where it is accommodated in the lower end of the heavy object and the position where it projects from the lower surface of the heavy object. A stopper, and each of the link devices includes two links that extend in the direction of the central axis and are pivotally supported at a central portion so as to form an X shape, and the two links include the X shape. The upper and lower ends of the shape are axially supported by the fixed frame and the movable frame, respectively, and the upper and lower ends on either side in the central axis direction of the two links are in the central axis direction. An object of the present invention is to provide a support structure for moving a heavy object, which is slidably supported by the fixed frame and the movable frame, respectively.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A moving support structure (1) according to the present invention is shown in FIGS. 1, 2 and 3. FIG. 1 shows a state in which the moving support structure (1) is housed inside the base wheel (9) of the chest to be supported, and FIG. 2 shows the moving support structure (1) from the lower end of the base wheel of the chest to be supported. FIG. 3 shows a bottom view of the moving support structure (1), respectively.

As shown in FIG. 1, the moving support structure (1) mounted inside the undercarriage (9) of the chest has a horizontally extending top plate, and is provided inside the undercarriage (9) of the chest. It is provided with a fixed frame (2) to be fixed and a movable frame (3) mounted inside the base wheel (9) so as to be movable up and down under the guide of the fixed frame (2). As shown in FIG. 3, the fixed frame (2) has a rectangular shape in bottom view, and a side wall (26) extends from each long side and an end wall (27) hangs from each short side, and the end wall is a base wheel (9). It is fixed with wood screws on the front and back inner surfaces. The movable frame (3) has a bottom plate (35) having substantially the same dimensions as the fixed frame (2), a side wall (36) and an end wall (37) hanging from the periphery thereof, and the end wall (37) is It comes in contact with the end wall of the fixed frame and is guided up and down. 5 and 6, the directions parallel to the short sides of the fixed frame (2) and the movable frame (3) are schematically shown by cross sections.

Two pairs of link devices (6) are provided on both sides (FIG. 1 shows one side) of the longitudinal center axis of the fixed frame (2) and the movable frame (3). The frame (2) and the movable frame (3) are connected. Between the top plate of the fixed frame (2) and the bottom plate of the movable frame (3), a horizontally flat airbag (4), which is a flexible pressure vessel, is provided as shown in FIG. The bag comprises a connection (10) for the supply and exhaust of pressure fluid. A caster (5) as a moving member is provided on the bottom surface of the bottom plate of the movable frame (3) so as to be in contact with the floor surface. The fixed frame (2) is provided with a stopper (23) so that the caster (5) is stationary at a position where the caster (5) is housed inside the pedestal (9) of the chest and a position protruding from the lower surface of the chest. .

Each link device (6) has the same form. The link device on the left side of FIG. 1 will be described. The link device (6) includes two links that extend in the central axis direction and are pivotally supported at a central portion (8) so as to form an X shape. The two links are provided with (61) and (62), and the upper end and the lower end of the X-shape are pivotally supported by the fixed frame (2) and the movable frame (3), respectively. The upper and lower ends of the two links (61) and (62) located at the central portion in the central axis direction are respectively connected to the fixed frame (2) and the movable frame (3) by the shafts (72) and (75). ). Also, the upper and lower ends located on the other side of the links (62) and (61) have the shafts (71) and (74) fixed to the fixed frame (2) and the movable frame so that they can slide in the central axis direction. It is passed through the long holes (28) and (38) of (3).

Similarly, in the link device shown in the right side of FIG. 1 with a part omitted, two links (63), which extend in the direction of the central axis and are pivotally supported at the center so as to form an X shape, (64), the two links are supported by the shafts (72) and (75) at the upper and lower end portions of the central portion, and the other upper and lower end portions are slidable in the central axial direction. As is, the shafts (73) and (76) are passed through the long holes (29) and (39) of the fixed frame (2) and the movable frame (3).

It is not necessary that the link ends are connected to each other by the common shafts (72) and (75) as in this embodiment, and the links (61) and (63) and the links (62) and (64) are not connected to each other. The respective ends may be separated from each other and pivotally supported by the fixed frame (2) and the movable frame (3).

As shown in FIGS. 3 and 4, the airbag (4) has a planar shape slightly smaller than the top plate and bottom wall of the fixed frame, and has a supply / exhaust connection port (10) at the center of the side edge. Is provided. In addition, as the flexible pressure vessel, various types such as a bellows type that can be expanded or contracted in the vertical direction by adjusting the pressure of the working fluid can be adopted. Projecting contact portions (22) are provided at both ends of the movable frame (3) in the central axis direction, and stoppers (23) are provided on the fixed frame (2) so as to face the contact portions (22). .

FIG. 3 is a bottom view of the support structure (1) shown with the casters (5) removed. At both ends of the fixed frame (2) in the direction of the central axis, there are fixed edges (21) for attaching to the wheel base (9) of the chest and a guide for slidingly guiding the movable frame (3) in the vertical direction. And an id (24) are provided.

Further, in the present embodiment, casters are used as the moving member, but in addition to this, a sliding member having a bottom surface made of a fluororesin coating, a smooth metal surface or the like can be appropriately adopted.

Next, the operation of the moving support structure according to this embodiment will be described. When air is supplied into the airbag (4) by a supply device (not shown) in the normal installation state shown in FIG. 1, the moving support structure (1) is indicated by an arrow (A) in FIG. Thus, the air bag (4) is expanded vertically. At the same time, the movable frame (3) on which the airbag is placed is pressed downward, and the movable frame (3) has the protrusions (22) provided at both ends of the movable frame (3). ) To the position where it abuts the stopper (23). During this movement, the casters (5) fixed to the bottom plate bottom surface of the movable frame (3) come into contact with the floor surface and raise the entire chest. Further, along with the movement, in each link device, the two links rotate around the pivot (in the directions of arrows (B) and (C) in the figure). At this time, the shafts (71), (73), (74) and (76) slide in the long holes provided in the fixed frame (2) and the movable frame (3), respectively.

In each link device, the shafts (72) and (75) at the center of the frame rotate at fixed positions, and the shafts (71), (73), (74), and (76) at the end of the frame are elongated holes. Inside it rotates while sliding horizontally. Therefore, the symmetrical movements in FIGS. 1 and 2 can be obtained, and as a result, the chest can be moved up and down while maintaining the weight balance. In addition, the guides (24) between the fixed frame and the movable frame can prevent wobbling in a direction perpendicular to the central axis direction.

[0016]

[Effect of device]

 In the support structure for moving heavy objects according to the present invention, since the flexible pressure container is interposed between the fixed frame and the movable frame in the lower end of the heavy object, the pressure adjustment of the pressure fluid in the pressure container is performed. By this, the movable frame can be moved up and down. Further, a plurality of pairs of link devices for connecting these two frames are provided on both sides of the center axis of the fixed frame and the movable frame, and each link device has an X-shape and is pivotally supported at the center. The link on either side in the direction of the central axis. The upper and lower ends of the link are rotatably supported so as to be able to rotate and slide in the long holes provided in the two frames. By doing so, the vertical movement of the movable frame can be made a stable operation while maintaining the horizontal state of the frame.

Therefore, during the installation period, the moving support structure is set in the raised position to place the heavy object in a stable state on the lower end surface, and in the case of movement, the moving member is projected downward from the heavy object to move the object. It can be done easily.

[Brief description of drawings]

FIG. 1 is a side view of a heavy object support structure according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which the support structure of FIG. 1 is operated.

FIG. 3 is a bottom view of the support structure of FIG.

FIG. 4 is a plan view schematically showing an airbag.

FIG. 5 is a sectional view schematically showing a fixed frame.

FIG. 6 is a sectional view schematically showing a movable frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Moving support structure 2 Fixed frame 3 Movable frame 4 Airbag 5 Castor 6 Link device 8 Center part 9 Trunk wheel carrier 10 Air supply / exhaust connection part 21 Fixed edge 22 Abutment part 23 Stopper 24 Guide 26, 36 Side wall 27, 37 End wall 28, 29, 38, 39 Long hole 61, 62, 63, 64 Link 71, 74, 73, 76 Shaft 72, 75 Common shaft

Claims (1)

[Scope of utility model registration request] 1. A fixed frame provided with a horizontally extending top plate and fixed to a lower end portion of a heavy object to be supported, and a horizontally extending bottom plate, and a guide frame of the fixed frame provided in the lower end portion of the heavy object. A movable frame mounted movably up and down, and a plurality of pairs provided on both sides of the central axis of the fixed frame,
A link device for connecting the fixed frame and the movable frame; a flexible pressure container provided between the top plate of the fixed frame and the bottom plate of the movable frame, the flexible pressure container having a connection part for supplying / exhausting pressure fluid; The moving member provided on the bottom surface of the bottom plate and the movable member are attached to the fixed frame so that the moving member is stationary at a position housed in the lower end of the heavy object and a position protruding from the lower surface of the heavy object. A stopper for restricting the vertical movement of the frame; and each of the link devices includes two links that extend in the central axis direction and are pivotally supported at the center so as to form an X shape. The upper and lower ends of the X-shape are pivotally supported by the fixed frame and the movable frame, respectively, and the upper and lower sides of one of the two links in the direction of the central axis are vertical. Both ends are supported by the fixed frame and the movable frame so as to be slidable in the direction of the central axis, respectively.