JP2529237Y2 - Furniture on casters - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to furniture on casters provided with casters for movement.

[0002]

2. Description of the Related Art Furniture, such as wardrobes and bookcases, are often heavy and bulky.
For example, a large amount of labor is required when moving is necessary due to a change of the room or moving. For the purpose of solving such a problem, in a normal installation state, a stable installation state is maintained by the lower end surface of a heavy object such as furniture, and a moving member such as a caster is moved from the lower surface of the heavy object as necessary. There has already been proposed a device for supporting a heavy object to protrude and facilitate its movement.

[0003] Such a device for supporting the movement of heavy objects is disclosed, for example, in JP-A-2-127308 and JP-A-4-7190.
No. 3 as well as Japanese Utility Model Laid-Open No. 2-132012.

[0004]

However, such a conventional moving support device cannot achieve both a simple structure and easy handling by hand. That is, first, what is disclosed in JP-A-2-127308 is
Casters are provided on the support frame provided on the bottom of the heavy object and opposed to the handle, the handle is manually rotated, and this rotation is converted into horizontal sliding motion via the worm gear and worm wheel, and the result is converted via the link. In general, the casters protrude from the lower end surface of the heavy load. In this example, in addition to the extremely complicated structure, the handle must be rotated many times to protrude the casters,
It took a lot of effort. In addition, as described above, since the worm gear and the like are used, the structure is complicated, and there is a concern that the driving part may be damaged such as gear wear. In addition, maintenance such as lubrication of the gears is also difficult.

[0005] Next, as disclosed in Japanese Patent Application Laid-Open No. 4-71903, similarly to the above example, casters are provided on a support frame provided on the bottom surface of a heavy object and opposed thereto, and a motor is used. A cam member having a substantially wedge-shaped cam curved edge is inserted into a gap between the cam followers disposed opposite to each other to push up the cam follower gap, which is taken out as a sliding motion, and the caster is projected via a link. This has a problem that, although manual operation is easy, the structure is complicated due to the use of a motor, and maintenance is complicated. In addition, there is a concern that the drive system may fail. In addition, the installation of the electrical components complicates the structure, thereby increasing the cost. Further, Japanese Unexamined Utility Model Publication No. 2-132012 discloses a technique in which a manual lever is moved up and down with respect to an installation surface. There is a restriction that the moving support device must be larger than a heavy object such as furniture to be used.

As described above, the conventional moving and supporting apparatus for moving heavy objects does not satisfy all of the simple structure and the ease of handling by humans, the various factors at low cost, and the freedom in installation conditions. . Therefore, the problem that the usability naturally deteriorates has become obvious.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and has a simple structure and is extremely easy to handle, and furthermore, does not impair the appearance of the furniture when installed. An object of the present invention is to provide furniture with casters that can be reduced in cost. The furniture with casters according to the present invention is a furniture with casters in which a moving support device having casters that can protrude and retract with respect to the lower end surface of the furniture main body is provided at the bottom of the furniture main body, and the moving support device is provided at the bottom of the furniture main body. And a pair of left and right lower frames provided inside the upper frame, each of which is connected to an upper frame via a shaft extending in a front-rear direction provided near a central portion of the upper frame in the left-right direction. A pair of left and right lower frames which are rotatably supported and casters are attached to the lower surface of the free end, and are respectively mounted on the front surfaces of the pair of left and right lower frames so as to be rotatable around a longitudinal axis. ,
A pair of connecting links capable of pressing the free end of the lower frame downward by pressing the press-contact surface formed at one end by rotation to the upper frame, and a vertical axis around the front of the upper frame. A pivot member rotatably mounted on the pivot member, a connecting member having one end fixed to the pivot, and the other end rotatable with a constant radius of rotation along with the rotation of the pivot, and the other end of the connecting member. A pair of connecting rods connecting the other ends of the left and right connecting links, respectively, and a pair of connecting rods fixed to a pivot and rotatable in the horizontal direction, and rotating the left and right connecting links via the connecting member and the left and right connecting rods. An operating lever for operating and moving the caster to and from the lower end surface of the furniture main body, wherein the caster is retracted in a state of being housed in the bottom of the furniture main body, and the free end is rotated from the bottom of the furniture main body to the front side. And an operation lever for projecting the caster in the The front skirt plate of the furniture body in the furniture body in which is mounted detachably.

[0008]

[Function] In the furniture with casters according to the present invention,
The moving support device is installed inside the bottom of the furniture body, and when moving the furniture, remove the hem plate and rotate the operation lever to the front, so that the casters protrude from the lower end surface of the furniture body, The furniture will be moved using the. Also, when installing furniture, the operation lever is rotated into the bottom of the furniture main body, the casters are immersed in the lower end surface of the furniture main body, and the furniture is stably supported by the entire lower end surface of the furniture main body. . Then, in such a state, the hem plate is attached to close the front opening at the bottom of the furniture body.

More specifically, the operation of moving the caster by the movable support device will be described. When the operation lever is turned to the front in the horizontal direction, a pivot fixed to the lever rotates. One end of the connecting member is fixed to the pivot, and the other end of the connecting member rotates with a constant radius of rotation by rotating the pivot. Further, since the connecting rod is connected to the other end of the connecting member, the connecting rod slides in the horizontal direction by the rotation of the other end of the connecting member. And the other end of the connection link pivotally supported on the front surface of the free end of the lower frame is connected to the tip of the connection rod, and the slide of the connection rod causes the connection link to rotate, The free end of the lower frame is pushed downward with respect to the upper frame by the pressure contact surface of the one end contacting the upper frame,
The casters project downward from the lower end surface of the furniture body. On the other hand, when the operation lever is turned into the bottom of the furniture body,
Contrary to the above, the connecting rod slides, the connecting link rotates in the opposite direction, and the free end of the lower frame rotates upward by the force from the floor that pushes the caster upward, so that the caster is rotated. It will be immersed above the lower end of the furniture. In this way, the horizontal rotation of the operation lever is converted into the movement of the free end of the lower frame with respect to the upper frame, and in the process of this conversion, the lever principle is applied. A large driving force can be obtained by force.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below based on specific embodiments. First, the movement support device incorporated in the furniture body will be described with reference to FIG. In the example shown in the figure, a caster 5 is provided on the lower surface of the upper frame 1 so that the shaft 3 can protrude and retract from the upper frame 1.
.. Are provided by connecting a pair of substantially U-shaped lower frames 7. The shaft 3 is attached by a washer 9 and a stopper 11, and a spring 13 is interposed between a lower edge of the upper frame 1 and an upper edge of the lower frame 7, and the lower frame 7 is attached to the upper frame 1. It gives a resilient force to press.

A top plate 15, 15 is provided on the upper surface of the upper frame 1 to facilitate installation of furniture and the like, and serves as a press-contact surface of a press-contact surface of a connecting link described later. A first pivot 17 rotatably supported at a fixed position is provided at an appropriate position of the upper frame. The tip of the first pivot 17 is, for example, machined to have a rectangular cross section, so that the operation lever 19 attached to this portion is securely fixed in the rotation direction. Further, one end of a connecting member 25 is fixed to a distal end of the first pivot 17 by a washer 21 and a nut 23. The other end of the connecting member 25 is rotatable with a constant radius of rotation as the first pivot 17 rotates. One end of each of the side surfaces 27 of the pair of lower frames 7 is formed as a pressure contact surface 29 with the upper frame 1 so that the lower frames 7 and 7 are rotatable along the lower frames 7 and the side surfaces 27. The connecting links 35 are supported by the second pivots 33 in a positional relationship where the distance between the upper surface 31 of the frames 7, 7 and the press contact surface 29 can be changed. A washer 37 and a nut 39 are attached. And this link 3
Of a set of connecting links 35, 3
5 is connected and fixed by the second pivot 33. A pin 41 is provided at the other end of the connecting member 25, and the two connecting rods 4 are provided between the other ends of the two connecting links 35, 35 by the washer 43 and the stopper 45.
7, 47 are connected.

[0012] Next, a usage mode in a case where such a moving support device is installed on the bottom of furniture will be described with reference to FIGS. First, FIG. 2 shows the structure of the bottom of the furniture in the always installed state.
Reference numeral 7 denotes a lower end surface of the furniture, that is, a base wheel. Then, the moving support device is installed on the bottom of the furniture by fixing the upper frame 1 to the inner surface of the pedestal 57 with a wood screw 59. In the state shown in this figure, the operation lever 19 is located at the left end in the figure, whereby the connecting member 25 faces rightward, and accordingly the connecting rod 47 is pushed rightward, and the press-contact surface 29 of the connecting link 35 is pressed. As a result of being released from the top plate 15 of the upper frame 1, the lower frame 7 is pressed against the upper frame 1 by the spring 13 shown in FIG. It has become. Therefore, the wheel 5
7, the furniture is in a stable installation state.

On the other hand, FIG. 3 shows a state in which the furniture is raised and the casters 5 work to be movable. In the state shown in this figure, the operating lever 19 is located at the right end in the figure, whereby the connecting member 25 faces leftward, and accordingly the connecting rod 47 is pushed leftward, and the press-contact surface 29 of the connecting link 35 is pressed. As a result of pressing the top plate 15 of the upper frame 1, the lower frame 7 protrudes from the upper frame 1, and the casters 5
Works, and the wheel 57 is floated with respect to the installation surface 53 and can be moved.

In the state shown in FIG. 3, the contact point between the press contact surface 29 and the top plate 15 of the upper frame 1 is pushed rightward to the connecting link 35 by adding weight from above, that is, the connecting rod 47 is pushed leftward. If the rotation force is set at such a position, the furniture is not released by the weight of the furniture, so that it is safe.

That is, as shown in the plan view of FIG. 4, when the furniture is raised, weight of the connecting rod 47 is increased from above.
However, since the operation lever 19 comes into contact with the side surface of the upper frame 1, the operation lever 19 does not rotate. Further, as is clear from the position of the connecting member 25 shown in the drawing, a stable state when ascending is obtained at a position slightly lower than the highest position, so that the connecting link 35 is disengaged by the weight of the furniture itself. Furniture does not "fall". Therefore, when the furniture is lowered from this elevated state, the connecting member 25 rotates clockwise with the rotation of the operation lever 19, so that the furniture once rises slightly and then falls. It can be said that this is a very important design item for safety measures.

FIGS. 5 and 6 show an example in which a moving support device is attached to furniture. FIG.
FIG. 6 shows a state in which the furniture is raised and made movable by the casters 5. In this example, the hem plate 61 is detachably mounted, and the movable support device installed at the bottom is housed inside to make the design preferable.

The furniture according to the present invention can be applied not only to general wooden furniture such as a chest of drawers and bookcases, but also to furniture including electric appliances such as a refrigerator.

[0018]

According to the furniture with casters according to the present invention, the casters are moved in and out by the link mechanism having a simple structure, so that the manufacturing cost of the moving support device can be greatly reduced. In addition, when the furniture is installed, by attaching the hem plate to the furniture main body, it becomes possible to cover and hide the entire movement support device, and the appearance of the furniture is not spoiled. Furthermore, the caster can be protruded from the lower surface of the furniture body by a simple operation from the outside of the furniture, in which the furniture is removed and the operation lever is rotated to the front, so that the furniture can be easily moved.
In addition, since it is possible to structurally prevent the connecting link for lifting from being detached due to the addition of weight at the time of lifting, the safety is extremely high. These effects are obtained by finally converting the horizontal movement of the operation lever into the vertical movement, thereby causing the lower frame to protrude and retract from the upper frame, and the casters to protrude and retract. As described above, levers can be applied everywhere, and large furniture can be lifted with a very small force.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the entire structure of a heavy-weight moving support device of the present invention.

FIG. 2 is an explanatory sectional view of a main part of the furniture bottom provided with the heavy load moving support device of the present invention, which is always installed.

FIG. 3 is an explanatory cross-sectional view of a main part showing a state in which a caster at the bottom of the furniture to which the support device for moving a heavy object of the present invention is attached becomes movable by working.

FIG. 4 is an explanatory plan view of a main part showing a state in which the bottom of the furniture to which the moving object supporting device of the present invention is attached can be moved by a caster.

FIG. 5 is a front view of the furniture to which the heavy object moving support device of the present invention is attached, which is always installed.

FIG. 6 is a front view showing a state in which the furniture to which the heavy object moving support device of the present invention is attached is movable.

[Explanation of symbols]

 Reference Signs List 1 upper frame 5 caster 7 lower frame 17 first pivot 19 operating lever 25 coupling member 33 second pivot 35 coupling link 47 coupling rod

 ──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 2-127615 (JP, U) JP-A 2-132012 (JP, U) JP-A 63-91039 (JP, U) JP-A 63-91039 178207 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. Furniture on casters, wherein a moving support device having a caster that can protrude and retract from a lower end surface of a furniture main body is provided at a bottom portion of the furniture main body, wherein the moving support device is provided in a bottom portion of the furniture main body. A fixed upper frame, a pair of left and right lower frames provided inside the upper frame,
Each of the upper frames is rotatably supported by the upper frame via a shaft extending in the front-rear direction provided near the center in the left-right direction of the upper frame,
And a pair of left and right lower frames each having a caster attached to the lower surface of the free end portion; and a pair of left and right lower frames that are rotatably mounted on the front surfaces of the pair of lower frames around a longitudinal axis. A pair of connecting links capable of pressing the free end of the lower frame downward by pressing the formed pressure contact surface against the upper frame, and rotatably mounted on a front portion of the upper frame around a vertical axis. A connecting member having one end fixed to the pivot, the other end being rotatable with a constant radius of rotation with the rotation of the pivot, the other end of the connecting member and left and right connecting links A pair of connecting rods respectively connecting the other end of the connecting member, and fixed to the pivot so as to be rotatable in the horizontal direction, the left and right connecting links are rotated via the connecting member and the left and right connecting rods, An operating lever that allows the caster to protrude and retract from the lower end surface of the furniture main body, and is provided in the bottom of the furniture main body. An operation lever for retracting the caster in the housed state and projecting the caster with the free end pivoted forward from the bottom of the furniture body, and a front hem of the furniture body facing the moving support device. Furniture on casters, characterized in that the board is detachably attached to the furniture body.