JPH0420267Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a method for moving a heavy object that has a hollow space at the lower end that is open toward the installation surface and has a structure that allows human hands to reach the hollow space from above. This invention relates to a support structure for transportation. Examples of such heavy items include storage furniture, and the portion surrounded by the architrave with its lower surface open and the bottom plate that can be opened and closed corresponds to the lower end space here. Here, storage furniture broadly includes chests of drawers, cupboards, cabinets, lockers, etc. In addition, the above-mentioned heavy objects include a vertical piano, an upright vending machine, a decorative installation, and the like.

BACKGROUND ART AND PROBLEMS THEREOF For example, storage furniture is often large and heavy, and once installed, it is often difficult to move it. Some storage furniture is equipped with casters at the bottom end, but this makes the installation unstable, and if the installation surface is a tatami mat or rug, heavy loads will be placed on the casters, making it difficult to install for a long period of time. This is not suitable because it deforms the installation surface. In addition, ease of movement is required for other heavy objects, but in many cases it is not desirable to use moving parts such as casters all the time from the standpoint of stability and aesthetics during installation. .

In order to meet such demands, the present invention has been developed to provide a heavy object that can be stably installed by the lower end of the heavy object at all times, and when necessary, a moving member can be made to protrude from the lower surface of the heavy object to facilitate movement. The purpose is to provide a support structure for movement.

Means for Solving the Problems The object of the present invention is to move a heavy object having a structure that has a space at the lower end that is open toward the installation surface and that allows a human hand to reach the space from above. A moving support structure for a mobile device, comprising a frame that can be stored and installed in the lower end cavity and that has open upper and lower surfaces, and an arm device and a lever device that are installed in the frame, and the arm device The frame has two arms whose base ends are pivotally supported at one end and the other end inside the frame so as to be rotatable in the vertical direction, and whose tips extend in opposite directions, and the tips of each arm. and a moving member attached to the lower surface of the proximal end of the arm, and the lever device is pivotally supported inside the frame substantially above the distal end of one of the arms and rotates in a direction along the arm. a rotor that is pivotally supported inside the frame substantially above the tip of the other arm and is rotatable in a direction along the arm and in contact with the other arm; a connecting member whose ends are pivotally connected to the lever and the rotor at a position remote from each shaft support of the lever and rotor so as to transmit rotation of the lever; one end to the connecting member and the other end to the frame; a supported spring; and a short actuating part that rotates while abutting the one arm, and the lever is configured such that when the operating part is rotated from the tilted position to the upright side, the actuating part One arm is pushed down and the rotor pushes down the other arm based on the transmission by the connecting member, and the pushed down state is maintained by an appropriate detent mechanism;
The lever is configured to release the arm from being pressed down by the operating section and the rotor when the operating section is returned to the tilted position with the release of the detent mechanism, and the spring is configured to release the arm from being pressed down by the operating section and the rotor. The connecting member is biased in a direction toward the upright position, and the moving member is caused to protrude downward from the frame by pushing down the arm based on the rotation of the lever, and by returning the lever, the moving member is caused to protrude downward from the frame. This is achieved by a support structure for moving a heavy object, which is characterized in that the frame can be lifted inward when the depression is released.

Embodiments Hereinafter, an example in which the present invention is applied to storage furniture will be described with reference to the accompanying drawings.

FIG. 1 is a longitudinal cross-sectional view of a cupboard in which a moving device having a support structure according to the present invention is housed and attached within an architrave, and FIG. 2 is a cross-sectional view thereof. The moving device 1 is usually attached to both the left and right sides of the storage furniture.
The figure shows only one side. This moving device 1 includes an arm device 2 and a lever 3 mounted within a frame 4. The frame 4 has a rectangular box shape in plan view with the upper and lower sides open, and the architrave D
It is screwed on the inside. The arm device 2 includes a first arm 20 and a second arm 21 whose proximal ends are supported by shafts 200 and 210 at the front and rear ends of the frame and are vertically rotatable, and which are attached to these arms. and moving members 22 and 23. First arm 20 and second arm 21
As shown in FIG. 1, there are support portions 201 and 211 that are approximately horizontal when the moving members 22 and 23 are in a state of protruding downward from the frame 4, and support portions 201 and 211 that are downward from the support portions toward the tip side. The pressure receiving portions 202 and 212 each extend in a bent manner. In this embodiment, further spiral springs 2 are attached to the shafts 200 and 210.
03, 213 is attached, and both tips are brought into contact with the inner wall of the frame 4 and the arms 20, 21, and the arms 20, 213 are attached.
It acts to lift 21. The moving members 22 and 23 are attached to the lower surfaces of the arm supports 201 and 211, respectively. The moving members 22 and 23 are
Although this example uses swivel casters,
In addition, the bottom surface may be coated with fluororesin, the sliding surface may be a plate with a smooth metal surface, etc., as appropriate. The lever device 3 includes a lever 30 supported by a shaft 300 substantially above the tip of the first arm 20, a rotor 31 supported by a shaft 310 substantially above the tip of the second arm 21, and the lever 30 and the rotor 31. A connecting member 32 that connects the
It is equipped with The lever 30 is a pair of plates 301, 301 connected by rods 302, 303, and a shaft 300 is provided between each plate 301 and the frame. Lever 3 is shaft 3
00 to the rod 302 is an elongated operating section 304, and from the shaft support to the rod 302
3 is a short operating portion 305, and these operating portions 304 and 305 form an obtuse angle with each other as shown. The lever 30 is arranged so that when the operating section 304 is tilted toward the second arm 21 so that it becomes approximately horizontal, the operating section 305 extends upward (see Fig. 3), and in order to maintain this position. A stopper pin 306 is attached to the frame 4. The lever 30 is rotatable from this tilted position to the side where the operating part 304 stands up.
With this rotation, the actuating section 305 is configured to press down the pressure receiving section 202 of the first arm by the rod 303. As is clear from FIG. 3, the pressure receiving part 202 is shaped so that the distance from the lever shaft 300 becomes shorter toward the tip when the moving member 22 is stored.
05 rotates, the first arm 20 is pushed down. In this embodiment, the rod 303 is further locked when the actuating section 305 reaches a position slightly past the consideration point (dotted chain line A in FIG. 1) corresponding to the reaction force from the pressure receiving section 202. , bend the first arm 20 to the tip and attach the locking part 20
4 is provided, and this structure forms a detent mechanism. The rotor 31 is made up of a pair of plates 311, 311 connected by a rod 312, and a shaft 310 is provided between each plate 311 and the frame 4. Connecting member 32
The shafts 320 and 31 are connected to the lever 30 and the rotor 31 at positions slightly apart from the shafts 300 and 310, respectively, so as to transmit the rotation of the lever 30 to the rotor 31.
The end of the member is pivotally supported by 321. The connecting member 32 also has a shape in which the shafts 320, 321 mounting portions protrude downward from the central portion, and when the operating portion 304 is in the tilted state, the shafts 320 and 321 are attached as shown in FIG.
The straight line connecting the centers of 0 and 321 is located slightly below the stopper pin 306. Ends of a tension coil spring 5 are respectively locked to the stopper pin 306 and the shaft 321 on the rotor side, and the coil spring 5 is connected to the connecting member via the shaft 321 in the direction in which the operating section 304 faces the upright position. 32 is energized. When the rotor 31 is rotated in this manner, the rod 312 is brought into contact with the pressure receiving portion 212 of the second arm, thereby pushing down the second arm 21. For this purpose, the shape of the second arm 21 and the shape of the detent mechanism by the locking part 214 at the passing position (FIG. 1B) are
This is the same as described for the arm 20. In this way, both the first arm 20 and the second arm 21 are activated by rotating the lever 30 from the tilted position (FIG. 3) to the upright side (FIG. 1), so that the rod 204 of the actuating part and the rotor, respectively, are rotated. It is pushed down by the rod 214 and held in the depressed position by the detent mechanism described above. When the lever 30 is reversely rotated from the upright side, the detent is released by passing the above-mentioned consideration point again, and when the lever 30 is returned to its original tilted position, the pressing down on the arms 20 and 21 is released. The moving members 22 and 23 protrude downward from the frame 1 against the weight of the chest of drawers when the arm is pressed down, and can be lifted inward to the frame 1 when the arm is released. Therefore, by attaching the frame 4 at an appropriate height within the architrave, the moving members 22 and 23 can be made to protrude from the lower surface of the architrave D and to be accommodated within the architrave. Further, a tension coil spring 5 is stretched between the stopper pin 306 and the shaft 321 on the rotor side, and urges the connecting member 32 in the direction in which the operating section 304 is raised, so that the operating section 304 is moved from the upright position to the tilted position. When pivoting to , it is possible to prevent sudden pivoting of the operating section 304 due to the weight of the storage furniture against the manual holding force.
Particularly in this embodiment, as the operating portion 304 approaches the tilted position, it becomes difficult to apply manual holding force to the operating portion 304, so the effect of preventing sudden rotation at this position is remarkable. By preventing this sudden rotation, impact to the contents of the storage furniture is avoided, which is particularly effective in preventing damage to glass products and chinaware in cupboards, and is also effective in protecting the structure of the storage furniture. You can also get the benefits of Moreover, the tension of this coil spring 5 is
When the operation unit 304 is raised up, it acts to assist this, and the force required for operation is further reduced. Moreover, in this embodiment, when the operating section 304 is in the tilted state, the stopper pin 306 is attached to the shaft 32.
Since it is located slightly below the position on the straight line connecting the centers of 0 and 321 (the consideration point), the operation part 3
04 becomes stable due to the detent effect caused by passing through this consideration point. In addition, in this embodiment, the torsion springs 203 and 213 bias the arms 20 and 21 so that they are housed inside the frame, so that even when the chest of drawers is lifted, the moving members 22 and 23 are lowered by their own weight. It is designed so that it can be fastened within the architrave without any damage. Also, a portion of the bottom plate of the chest of drawers is removable so that the lever 30 can be rotated manually.

4 and 5 each show the main parts of an embodiment different from the above, and similar parts or parts in the figures are given the same numbers.

In the example shown in FIG. 4, each pressure receiving part 202, 212 of the first arm 20 and second arm 21 is formed in an arc shape, and when the moving member is stored, the shafts 300, 310 extend toward the tip of the pressure receiving part. The distance is shortened. When the lever 30 is rotated to the upright side, the rod 303 of the actuating part and the rod 312 of the rotor press and slide on the concave curved surface formed as described above, and the time required from the beginning to the end of the lever rotation is Force becomes more even. Fourth
In the illustrated example, the connecting member 32 transmits the rotation to the rotor 31 while receiving a compressive force when the lever 30 is rotated from the illustrated position. In this example, the stopper pin 306 and the shaft 32 on the lever side are
A tension coil spring 5 is installed between the 0 and 0.

In the example shown in FIG. 5, the operating portion 30 of the lever 30
5 and the rotor 31 are each provided with arcuate plates 303 and 312 that constitute cam surfaces instead of rods. As the lever and rotor rotate from the illustrated position, the arcuate plates 303 and 312 contact the pressure receiving parts 202 and 212, and the shaft 300,
The lever 30 is formed so that the distance from the lever 310 increases, so that the lever 30 can be rotated with a substantially uniform force. As in the first example, the detent mechanism at the arm push-down position presses the stopper pin 3 at a position slightly beyond the point corresponding to the reaction force from the pressure receiving part.
07 and 308, the lever 30 and the rotor 31 are in contact with each other. In addition, as the detent mechanism, a mechanism using a hook or pin for locking the lever device or arm device to the frame can be adopted as appropriate, and the same applies to other embodiments. In addition, in this example, the stopper pin 306 and the shaft 320 on the lever side
A compression coil spring 5' is installed between the two to prevent sudden rotation when the operating section is tilted.

The moving support structure according to the present invention can also be provided to other storage furniture and other heavy objects in the same way as the example of the cupboard. Further, the moving support structure according to the present invention can be configured such that the support structure part is assembled separately from the heavy object and attached to the heavy object, or a part of the lower end of the heavy object can be used as a frame. It can also be formed integrally with the heavy object.

Effects of the Invention As is clear from the above explanation, according to the present invention, it is possible to provide a support structure for moving heavy objects that has the following effects. That is, the frame of the support structure can be stored and installed in a space at the lower end of a heavy object, and the frame has two positions: a storage position toward the inside of the frame, and a position where it protrudes downward from the frame. By installing the frame at an appropriate height within the space at the bottom end of the heavy object, the moving member is usually accommodated and the heavy object can be stabilized on any installation surface. By protruding the moving member downward when necessary, heavy items can be easily moved based on the moving member.

The operation to bring the moving member to both positions is extremely easy as it only involves rotating the lever in the front and rear directions, and the lever action of both the lever and the arm for supporting the moving member reduces the amount of manpower required to rotate the lever. The force required is greatly reduced, making operation easier. In addition, since the spring whose end is supported by the connecting member and the frame biases the connecting member in the direction of raising the operating unit, the gravitational force of the heavy object causes the operating unit to move when the operating unit is brought to the tilted position. This prevents sudden rotation against the force of manual holding.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional side view of the lower part of a cupboard equipped with the support structure of the present invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 is a moving member. FIG. 4 is a vertical side view showing the main parts of another example, and FIG. 5 is a vertical side view showing the main parts of still another example. DESCRIPTION OF SYMBOLS 1...Movement device, 2...Arm device, 3...Lever device, 4...Frame, 20...First arm, 21...Second arm, 22, 23...Movement member, 30...Lever , 31...rotor, 32
...Connection member, 200, 210, 300, 310
... shaft, 304 ... operation section, 305 ... operation section.

Claims (1)

[Scope of utility model registration request] A support structure for moving a heavy object, which has a lower end space open toward the installation surface and has a structure that allows a human hand to reach the space from above, wherein the support structure has a structure in which a person can reach the space from above, wherein The frame frame has an open upper and lower surface that can be stored and installed in the frame, and an arm device and a lever device installed in the frame. Two arms whose ends are pivotally supported and can be rotated in the vertical direction and whose tips extend in opposite directions, and a moving member attached to the lower surface of each arm on the proximal side of the tip. The lever device includes a lever that is rotatable in a direction along the arm that is pivotally supported inside the frame at a position substantially above the distal end of one of the arms, and a lever that is rotatable in a direction along the arm that is substantially above the distal end of the other arm. a rotor that is pivotally supported inside the frame and is rotatable in a direction along the arm and in contact with the other arm; and a shaft of the lever and rotor so as to transmit the rotation of the lever. a connecting member whose ends are pivotally connected to the lever and the rotor at a position remote from the support, and a spring supported at one end by the connecting member and by the frame, the lever being supported from the pivot support. a long operating section that can be rotated from an extended and substantially horizontal tilted position to the upright side and vice versa; and a short operating section that rotates while abutting the one arm as the operating section rotates. and an actuating part, and the lever is configured such that when the operating part is rotated from the tilted position to the upright side, the actuating part pushes down the one arm and moves the rotor based on the transmission by the connecting member. is adapted to push down the other arm and hold it in the depressed state by a suitable detent mechanism, while the lever
When the detent mechanism is released and the operating section is returned to the tilted position, the arm is released from being pressed down by the operating section and the rotor, and the spring is configured to direct the operating section toward the upright position. The moving member is caused to protrude downward from the frame by pushing down the arm based on the rotation of the lever, and by releasing the pushing down by returning the lever. A support structure for moving a heavy object, characterized in that the frame can be lifted inward.