JPH0530005Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a moving support structure for facilitating the movement of heavy objects. Examples of such heavy items include storage furniture, vertical pianos, vertical vending machines,
Examples include decorative installations. Here, storage furniture is used in a broad sense, including cupboards, bookshelves, cabinets, lockers, and the like.

BACKGROUND TECHNIQUES AND PROBLEMS THEREOF For example, storage furniture is often large and heavy, and once installed, it is often difficult to move it. Various types of storage furniture have been proposed with casters placed at the bottom end, but since the casters alone receive the load, the installation condition becomes unstable, and the load is concentrated on the casters, so the above storage furniture If the installation surface is a tatami mat or a carpet, it is not suitable because the installation surface will be deformed by long-term installation. Ease of movement is also required for other heavy objects, but from the standpoint of stability and aesthetics during installation,
In many cases, it is not desirable to constantly use and install moving members such as casters.

In order to meet the above-mentioned requirements, the purpose of the present invention is to enable stable installation of a heavy object by using the bottom surface of the object at all times, and when necessary, a moving member is protruded from the bottom surface of the heavy object to facilitate the movement of the object. An object of the present invention is to provide a support structure for moving objects.

Means for Solving the Problems The above-mentioned object of the present invention is to provide a horizontally extending support frame which is fixed to the lower part of a heavy object, and a support frame which is fitted so as to be movable up and down with the lower part protruding from the support frame. a frame frame that moves vertically with respect to the support frame by a cam mechanism, an actuator that moves the frame up and down with respect to the support frame, and a drive unit that acts on the cam mechanism of the operation unit, and a A supporting structure for moving a heavy object, including a plurality of moving members protruding downward, wherein the actuating section has one end supported by both frames, and moves the frame to the supporting frame. a plate cam supported by either one of the frames and rotatable around a horizontal axis perpendicular to the horizontal separation direction; and a plate cam supported by the other of the frames. a cam follower that cooperates with the plate cam and moves the frame downward against the biasing force of the elastic body as the radius vector of the plate cam increases; The plate cam is attached to one of the frames, and the plate cam is mounted so that the moving member takes a position above the lower end of the frame and a position protruding downward from the lower end due to a change in the radius of the plate cam. This is achieved by a support structure for moving a heavy object, which is characterized in that it is provided so that a rotation shaft can be rotated.

the drive unit is attached to the support frame,
A manual lever device may be provided to apply rotational force to the rotation shaft of the plate cam.

The actuating parts may be provided apart from each other in the horizontally separating direction, and in this case, the driving part is configured to transmit the rotational force of the manual lever device to each plate cam rotation shaft of the actuating part. It is preferable to have a crank mechanism.

Furthermore, the above object of the present invention is to provide a horizontally extending support frame fixed to a lower part of a heavy object, a frame frame fitted to the support frame so as to be vertically movable with the lower part protruding from the support frame; An actuating part that moves the frame up and down with respect to the support frame by a link mechanism, and a drive part that acts on the link mechanism of the actuating part, are separated from each other in the horizontal direction and protrude downward from the support frame. A support structure for moving a heavy object, which includes a plurality of moving members, the actuating part including a link having one end pivotally supported by the support frame, and a link having one end pivotally supported by the frame frame. the two links are pivoted to each other at their respective ends, the drive section is attached to one of the two frames, and the moving member is attached to the lower end of the frame. The link is provided so that the shaft of the link supported by the frame of one of the two links can be rotated so as to assume a position higher than the lower end and a position protruding downward from the lower end. This is also achieved by the characteristic support structure for moving heavy objects.

The drive unit is attached to the support frame,
A manual lever device may be provided for applying rotational force to the shaft of the link supported by the support frame.

The actuating parts may be provided apart from each other in the horizontally separating direction, and in this case, the driving part applies the rotational force of the manual lever device to the shaft of each link supported by the support frame. It is preferable to have a crank mechanism for transmitting the information.

Embodiments Hereinafter, the present invention will be described with reference to the accompanying drawings, taking as an example the case where the present invention is applied to clothing storage furniture such as a wardrobe.

FIG. 1 shows a support structure for moving heavy objects according to an embodiment of the present invention, and FIG. 2 shows a part thereof in an enlarged manner. The movable support structure 1 is fitted to a horizontally extending support frame 2 fixed to the lower part of the clothing storage furniture A so as to be movable up and down with the lower part protruding from the support frame 2. The frame frame 3, the actuating part 5 that moves the frame frame 3 up and down with respect to the support frame 2 by the cam mechanism 4, and the driving part 6 that acts on the cam mechanism 4 of the actuating part 5, mutually move in the frontage direction of the clothes storage furniture A. It is provided with a plurality of casters (moving members) 7 that are spaced apart from each other and project downward from the support frame 2.

As shown in FIGS. 2, 4, and 5, the actuating section 5 includes a cam bearing 12 fixed to the edge of the support frame 2 and a roller bearing 13 fixed to the inside of the frame 3. have. The cam bearing 12 is
The hexagonal rod-shaped rotation shaft 11 of the plate cam 8 that can rotate around a horizontal axis perpendicular to the frontage direction of the clothes storage furniture A described above is rotatably held, and the roller bearing 13 cooperates with the plate cam 8. A roller (cam follower) 10 is rotatably held. In addition, the cam bearing 12
is equipped with a rod-shaped member 14 hanging from its upper end wall and extending through the upper wall of the roller bearing 13,
A compression coil spring (elastic body) 9 is attached to the rod-like member 14 , and one end of each spring is supported in contact with the lower end flange of the rod-like member 14 and the upper wall of the roller bearing 13 . The coil spring 9 biases the roller bearing 13 toward the cam bearing 12, thereby biasing the frame 3 upward with respect to the support frame 2. As the radius vector of the plate cam 8 increases, the roller bearing 13 of the roller 10 moves downward against the urging force of the coil spring 9, and the frame frame 3 descends with respect to the support frame 2. . A total of four actuating parts 5 configured in this manner are arranged near both ends in the frontage direction of each inner surface of the front and rear walls of the support frame 2 and the frame frame 3, and the rotation shaft 11 is arranged in two actuating parts facing each other in the front and rear direction. It extends between each plate cam 8 of section 5.

The drive unit 6 includes a hexagonal rod-shaped rotation shaft 16 supported by two brackets 15 at a central position in the frontage direction of the support frame 2, and a manual lever 18 whose one end is connected to the drive shaft 16. (See FIG. 3), the other end of the manual lever 18 protrudes above the support frame 2 from a slot 17 formed in the support frame 2. This manual lever 1
The rotation of the drive shaft 16 due to the rotation operation of 8 is transmitted to each of the rotation shafts 11 by a crank mechanism 20 described below. The crank mechanism 20 includes a drive arm 21 extending perpendicularly from the drive shaft 16;
It is provided with two driven arms 23 extending perpendicularly from each of the book rotation shafts 11, and a connecting rod 22 which connects the tips of these arms 21 and 23 and is rotatably connected to each of them. The crank mechanism 20 operates on each rotating shaft 1 based on the driving force transmission operation of the driving arm 21, the connecting rod 22, and the driven arm 23.
1 to synchronize the rotation of the plate cams 8. Therefore, the entire frame 3 can be rotated by the crank mechanism 20 by one rotation of the manual lever 18.
It is raised or lowered relative to the support frame 2 via the support frame 2. As a result, the casters 7 can be moved to a position above the lower end of the frame 3, as shown in FIG. 6, and to a position protruding downward from the lower end, as shown in FIG. 7, without tilting the storage furniture A. Take.

The operation of the moving support structure 1 configured as described above will be explained in more detail.

FIG. 6 shows the storage furniture A installed in a predetermined position. The manual lever 18 of the drive unit 6 is
In this case, the maximum diameter portion of the plate cam 8 is at the position indicated by the solid line in FIGS.
As shown in Figures a to c, it faces almost straight down. In this state, the plate cam 8 and roller 10 of the cam mechanism 4 move the roller bearing 13 to the lowest position against the biasing force of the coil spring 9, so that the lower end of the frame 3 It is located in a position that protrudes downward from the caster 7. Therefore, the storage furniture A is maintained in the normal installation state in which the lower end of the frame 3 is in contact with the installation surface.

FIG. 7 shows the state when the storage furniture A is moved. In this case, the manual lever 18 is rotated to the opposite side from the above-mentioned installed state (see FIGS. 2 and 3).
(indicated by a two-dot chain line in the figure), the minimum diameter radius portion of the plate cam 8 faces directly below, as shown in FIGS. 5a to 5c. Along with this, the roller 10 rises due to the action of the coil spring 9, and the frame 3 is pulled up with respect to the support frame 2 via the roller bearing 13. Thereby, the casters 7 are in a state of protruding downward from the frame 3, and the storage furniture A can be easily moved with a small force. When operating the casters 7 to protrude, the weight of the storage furniture A acts to push the frame 3 upward, so the manual lever 18 can be rotated with an extremely small force. After the caster 7 comes into contact with the installation surface, a force sufficient to lift the frame 3 may be applied to the manual lever 18.

After moving storage furniture A to the desired installation position,
The manual lever 18 can be returned to its original position by rotating it in the opposite direction. In this rotation operation of the manual lever 18, until the frame 3 comes into contact with the installation surface, the frame 3 is simply pushed down against the biasing force of the compression coil spring 9, so an extremely small force is required. Just add it to the manual lever 18. After the frame 18 comes into contact with the installation surface, it is necessary to apply force to the manual lever 18 so that the frame 18 pushes up the storage furniture A. In this case, the manual lever 18 is long, and the amount of movement of the frame 3 per lever rotation angle is reduced by employing the cam mechanism 4, so the force required to rotate the manual lever 18 is relatively small. Small is good.

As mentioned above, the moving support structure 1 of the present invention
The storage furniture A can be moved from the installation state to the movement state, or from the movement state to the installation state, without tilting the storage furniture A and by rotating the manual lever 18 once with a small force. can.

In the above embodiment, the drive section was equipped with a manual lever, but instead of this, for example, the drive section is equipped with an electric motor, and the electric motor applies rotational force to the plate cam rotation shaft. You can do it like this. The transmission of this rotational force is not limited to the above-mentioned crank mechanism, but a transmission mechanism using a plurality of gears, chains, belts, etc. can also be adopted. In addition, in the above embodiment, a drive shaft was provided separately from each rotation shaft of the plate cam, but any one of the plurality of plate cam rotation shafts also served as the drive shaft, and the rotation shaft A manual lever or the like may be provided. Furthermore, in the above embodiment, casters were used as moving members, but in addition to this, the bottom surface was
A sliding member having a fluororesin coated surface or a smooth metal surface can be appropriately used.

FIGS. 8 and 9 show other embodiments of the actuating part in the moving support structure of the present invention. The operating section 31
In this embodiment, instead of the cam mechanism 4 consisting of the plate cam 8 and the roller 10 provided in the actuating section 5 in the above embodiment, a link mechanism 32 consisting of two links, the first and second links 33 and 35, is used to connect the support frame. 2, the frame 3 is moved up and down. Actuating section 31 having the link mechanism 32
is fixed to the support frame 2 and the first link 33
It includes a first link holder 34 that pivotally supports one end of the second link 35, and a second link holder 36 that is fixed to the frame 3 and pivotally supports one end of the second link 35. The first and second links 33 and 35 have their other ends pivoted to each other, and both the holders 34 and
A rod-shaped member 14 and a compression coil spring 9 included in the actuating section 5 are disposed between the actuating portion 36 and the actuating portion 5 .
The coil spring 9 urges the frame 3 upward with respect to the support frame 2, and functions in the same manner as in the above example.

The drive unit 6 applies the rotational force of the manual lever 18 to the rotation shaft 11 of each first link 33 using a crank mechanism 20.
It is becoming more and more common to communicate this to people. As the first link 33 rotates, the second link 35 also rotates in the opposite direction, and depending on the rotation direction of the manual lever 18, both links 33,
35 takes both bending and stretching postures. Thereby, the frame 3 moves up and down relative to the support frame 2 by the operation of the crank mechanism 20 based on a single rotational operation of the manual lever 18. Therefore, the operating section 3
1, the casters 7 take a position above the lower end of the frame 3 and a position protruding downward from the lower end, without tilting the storage furniture A, as in the above-mentioned operating part 5. do. In this case, as both links 33 and 35 approach the extended position, the amount of movement of the frame 3 per rotation angle of the manual lever 18 becomes smaller, so the manual lever 18
Together with the lever action, the force required when lowering the frame 3 is reduced.

In addition, in the above-mentioned operating part 31, since the frame 3 can be pushed upward with respect to the support frame 2 by cooperation of the first and second links 33, 35, both link holders 34, 36 It is also possible to omit the rod-shaped member 14 and the coil spring 9 arranged therebetween. Further, in order to maintain the installation state of storage furniture A, both links 33 and 35 are arranged so that they take an extended position or a slightly bent position in the opposite direction to the direction in which they should be bent. ，
Preferably, a stopper for stopping the rotation of 35 is provided, such as the abutment pin 24 shown in FIGS. 8 and 9.

The present invention can be applied to heavy items such as other storage furniture and decorative installations in the same way as the above-mentioned example of clothing storage furniture.

In addition, the moving support structure according to the present invention can be 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 support frame. It can also be integrated into heavy objects.

Effects of the Invention As is clear from the above, the following effects can be obtained with the moving support structure of the present invention.

That is, a horizontally extending support frame fixed to the lower part of the heavy object is provided with a frame frame that is fitted in a vertically movable manner with the lower part protruding, and the movable frame is provided so as to protrude downward from the support frame. As the frame moves up and down, the support member assumes a position above the lower end of the frame and a position protruding downward from the lower end, so that heavy objects are always stabilized by the lower end surface of the frame. The heavy object can be easily installed, and if necessary, the moving member can be protruded from the lower surface of the heavy object to facilitate movement. This vertical movement of the frame is performed based on the plate cam and cam follower attached to the support frame and the frame, so by reducing the amount of movement of the frame per rotation angle of the rotation axis of the plate cam, The driving force required to move the frame up and down is reduced.
Furthermore, if a crank mechanism is employed to rotate the plate cam rotation shaft, the drive source can be provided at any position that can exert a driving action on the crank mechanism. Furthermore, since the moving member is provided on the support frame separately from the actuating section and the driving section for vertically moving the frame, the moving member can be placed at a position appropriate for the purpose and function of the heavy object. I can do it.

Instead of the actuating part having the above-mentioned cam mechanism, a pair of links, each end of which is pivotally supported on the support frame and the frame, are pivoted to each other, and the vertical movement of the frame is made by bending and stretching the links. If you do,
As both links approach the extended position, the amount of movement of the frame per rotational angle of the link shaft becomes smaller, so the driving force required to move the frame up and down is reduced, as described above.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a moving support structure according to an embodiment of the present invention, Fig. 2 is an enlarged perspective view of a part thereof, and Fig. 3 is a side view showing the operating state of the manual lever. , FIG. 4a is a partially sectional front view of an example of the operating section when the frame is in the lowest position, FIG. 4b is a side view thereof, and FIG. 4c is a view of FIG. 4a. A sectional view taken along the line, FIG.
Figure c is a sectional view taken along the - line in Figure 5 a, Figure 6 is a partially cutaway front view showing an example of the storage furniture in an installed state, and Figure 7 is a partially cutaway front view of the storage furniture. The figure is a partially cutaway front view showing an example of the case where the storage furniture is in a movable state, and FIGS. 8 and 9 show the operating part of the moving support structure of the present invention This shows another example.
The figure is a perspective view showing the case where the frame is at the lowermost position, and FIG. 9 is a perspective view showing the case where the frame is at the uppermost position. 1...Movement support structure, 2...Support frame,
3... Frame, 4... Cam mechanism, 5, 31...
... Actuation part, 6 ... Drive part, 7 ... Caster (moving member), 8 ... Plate cam, 9 ... Compression coil spring,
10... Roller (cam follower), 11... Rotating shaft, 18... Manual lever, 20... Crank mechanism, 32... Link mechanism, 33... First link,
35...Second link, A...Clothing storage furniture.

Claims (1)

[Claims for Utility Model Registration] A support frame fixed to the lower part of a heavy object and extending horizontally, a frame fitted to the support frame so as to be movable up and down with its lower part protruding, and a cam. an actuator that moves the frame up and down with respect to the support frame by a mechanism;
A support structure for moving a heavy object, comprising a drive section that acts on a cam mechanism of the operating section, and a plurality of moving members that are spaced apart from each other in the horizontal direction and project downward from the support frame. The actuating section includes an elastic body whose one end is supported by both frames and urges the frame upwardly with respect to the support frame, and an elastic body supported by either one of the frames and which urges the horizontal separation. a plate cam that can rotate around a horizontal axis perpendicular to the direction; and a cam follower that moves downward against the biasing force of the body, and the drive unit is attached to the one frame, and the moving member moves toward the frame frame by changing the radius of the plate cam. A support structure for moving a heavy object, characterized in that the rotary shaft of the plate cam is provided so as to be able to rotate so as to take a position above the lower end and a position protruding downward from the lower end. . 2. The support structure for moving a heavy object according to claim 1, wherein the drive section includes a manual lever device attached to the support frame and applying rotational force to the rotation shaft of the plate cam. The actuating parts are provided to be separated from each other in the horizontal separation direction, and the driving part has a crank mechanism for transmitting the rotational force of the manual lever device to each plate cam rotating shaft of the actuating part. 3. The support structure for moving heavy objects according to claim 2. A support frame that extends in the horizontal direction and is fixed to the lower part of the heavy object; a frame frame that is fitted to the support frame so as to be able to move up and down with the lower part protruding; The frame includes an actuating part that moves the frame up and down, a driving part that acts on a link mechanism of the actuating part, and a plurality of moving members that are spaced apart from each other in the horizontal direction and protrude downward from the support frame. A support structure for moving heavy objects,
The actuating section includes a link having one end pivotally supported by the support frame, and a link having one end pivotally supporting the frame frame, and both the links include:
The other end portions thereof are mutually pivotally connected, and the drive portion is attached to one of the frames, and the moving member is positioned above the lower end of the frame and below the lower end. A support structure for moving a heavy object, characterized in that the shaft of the link supported by the frame of one of the two links can be rotated so as to take a protruding position. . 5. The heavy object movement according to claim 4, wherein the drive unit includes a manual lever device attached to the support frame and applying rotational force to a shaft of a link supported by the support frame. Support structure for. The actuating portions are provided to be separated from each other in the horizontal separation direction, and the driving portion is a crank mechanism for transmitting the rotational force of the manual lever device to the shaft of each link pivotally supported by the support frame. The support structure for moving heavy objects according to claim 5, characterized in that it has: