JPH0728113U - Moving support device for heavy goods and furniture using it - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a moving support device for heavy objects, which has a simple structure, is extremely easy to handle, and can be reduced in cost, and furniture using the same. [Structure] An apparatus for supporting and moving a heavy object includes an upper frame (1) on which a heavy object is installed, and an inside of the upper frame.
The rotating lever (1) is composed of a pair of lower frames (7), (7) which are connected to the upper frame in a retractable state and have casters (5) on the lower surface.
Finally, the horizontal movement of 9) is converted into vertical movement, so that the lower frame (7) with respect to the upper frame (1),
The caster (5) is moved in and out by moving (7) in and out. With respect to furniture, a recess is provided in the bottom of the main body, and the above-described heavy object moving and supporting device is installed in the recess.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heavy-weight moving and supporting device with casters, which is installed on the bottom of a heavy object such as furniture and enables the moving work to be performed very easily, and furniture using the same.

[0002]

[Prior art]

 Most furniture such as chests of drawers and bookcases are heavy and bulky, and it requires a great deal of labor when it needs to be moved once it has been installed, for example, when the room is redesigned or moved. there were. For the purpose of solving such problems, in a normal installation condition, the stable installation condition of the lower end surface of heavy objects such as furniture is maintained, and moving members such as casters are projected from the lower surface of the heavy object as necessary. A moving support device for heavy objects that facilitates the movement has already been proposed.

Such a heavy-weight moving and supporting device is disclosed, for example, in Japanese Patent Laid-Open Nos. 2-127308 and 4-71903.

[0004]

[Problems to be solved by the device]

 However, in such a conventional moving support device, it is not possible to achieve both a simple structure and easy handling by hand. That is, first, as disclosed in Japanese Patent Laid-Open No. 127308/1990, a caster is provided on a support frame provided on the bottom surface of a heavy object so as to face it, and a handle is manually rotated, and this rotation is performed by a worm gear and a worm wheel. It is converted into a horizontal slide motion via the, and eventually the caster is projected from the lower end surface of the heavy object via the link. In this example, in addition to being extremely complicated in structure, the handle had to be rotated many times in order to project the casters, which required a lot of labor. Further, since the worm gear and the like are used as described above, the structure is complicated, and there is concern that the drive portion may be broken due to wear of the gear or the like. Also, maintenance such as lubrication of gears is difficult.

Next, as disclosed in Japanese Patent Laid-Open No. 4-71903, as in the above example, a caster is provided on a support frame provided on the bottom surface of a heavy object and facing each other. By inserting a cam member that has a substantially wedge-shaped cam curved edge into the gap between the cam followers that are arranged opposite to each other, the cam follower gap is widened, and this is taken out as a slide motion to project the caster via the link. is there. Although this is easy to perform manually, there is a problem that the structure is complicated and maintenance is complicated because a motor is used. In addition, drive system failure is also a concern. Furthermore, the installation of the electrical components complicates the structure, which in turn increases costs.

As described above, the conventional heavy-duty moving and supporting apparatus does not satisfy all the factors of the simple structure, the ease of handling by humans, and the low cost. Therefore, the problem that the usability is naturally deteriorated has become apparent.

[0007]

[Means for Solving the Problems]

 The present invention solves such conventional problems, and provides a heavy-weight moving and supporting device having a simple structure, extremely easy to handle, and low cost, and a household appliance using the same. It is a thing. In the present invention, which solves the above problems, first, a moving support device for a heavy object is connected to an upper frame on which the heavy object is installed, and is connected to the inside of the upper frame in a retractable manner with respect to the upper frame. , A pair of lower frames having casters on the lower surface, a first pivot shaft rotatably supported at a fixed position on the upper frame, a rotation lever fixed to the first pivot shaft, One end is fixed to one pivot, and the other end is attached to the side faces of the pair of lower frames, and the other end is rotatable with a constant radius of rotation as the first pivot rotates. A link member having one end serving as a pressure contact surface with the upper frame and being rotatable along the side surface of the lower frame and capable of changing the distance between the upper surface of the lower frame and the pressure contact surface by the rotation. Connection link pivotally supported by a second pivot at It is obtained by a coupling rod which is connected between the other end portion of the connecting link and the other end portion of the member.

Next, as furniture using such a heavy load moving and supporting device, there is provided a recess at the bottom of the main body, and the heavy load moving and supporting device is installed in the recess. An object movement support device is connected to an upper frame on which the furniture is installed and is connected to the upper frame inside the upper frame in a retractable manner with respect to the upper frame. A pair of lower parts is provided with casters on the lower surface. A frame, a first pivot rotatably supported at a fixed position on the upper frame, a rotation lever fixed to the first pivot, and one end fixed to the first pivot. A connecting member whose other end is rotatable with a constant radius of rotation according to the rotation of the first pivot, and a link member attached to the side faces of the pair of lower frames, one end of which is an upper frame. And the pressure contact surface with In addition to the connecting link that is movable and pivotally supported by the second pivot in a positional relationship in which the distance between the upper surface of the lower frame and the pressure contact surface can be changed, the other end of the connecting member It is a moving support device for heavy objects provided with a connecting rod connected between the end part and a pair of lower frames protruding from the upper frame, and the caster projects from the lower end surface of the furniture. The feature of the present invention is that the depth of the recess is set so that the casters can be recessed in the recess when the pair of lower frames are recessed with respect to the upper frame.

[0009]

[Action]

 The heavy object moving and supporting device of the present invention is provided on an upper frame on which a heavy object is installed, is provided inside the upper frame, is connected to the upper frame in a retractable manner, and has a caster on a lower surface thereof. It consists of a pair of lower frames.The horizontal movement of the rotating lever is finally converted into vertical movement, which allows the lower frame to move in and out of the upper frame to move the casters in and out. It is a thing. This action will be described below.

When the rotary lever is rotated in the horizontal direction, the first pivot fixed to the lever rotates. One end of the connecting member is fixed to the first pivot, and when the first pivot rotates, the other end of the connecting member rotates with a constant radius of rotation. Further, since the connecting rod is connected to the other end of the connecting member, the connecting rod is slid in the horizontal direction by the rotation of the other end of the connecting member. The other end of the connecting link pivotally supported by the second pivot on the side surface of the lower frame is connected to the tip of the connecting rod. One end of this connecting link serves as a pressure contact surface with the upper frame and is rotatable along the side surface of the lower frame, and the positional relationship in which the distance between the upper surface of the lower frame and the pressure contact surface can be changed by the rotation. It is also accompanied. Therefore, the substantially horizontal sliding movement of the connecting rod applies a rotational movement force about the second pivot to this connecting link, and as a result, one end of this connecting link, that is, the pressure contact surface with the upper frame, is applied. It will rotate. Here, the distance between the pressure contact surface with the upper frame and the upper surface of the lower frame on which the connecting link is pivotally supported is changed by the rotation of the connecting link. As a result, the lower frame is moved in and out of the upper frame. In this way, the horizontal movement of the rotary lever is converted into the retracting movement of the lower frame relative to the upper frame. Since the lever principle is applied in the process of this conversion, it is possible to obtain a large retracting force with a small force.

In furniture using such a moving and supporting device for heavy objects, the lower end surface, that is, the stable installation state by the pedestal is maintained in a regular installation state by the following action, and it is necessary. According to the above, the casters are projected from the lower surface of the heavy object to facilitate the movement thereof.

The furniture of the present invention is provided with a recess at the bottom of the main body, and the above-described heavy object transfer support device is installed in the recess. When the lower frame is projected from the upper frame of the above-mentioned moving support device, the casters are projected from the lower end surface of the furniture, and conversely, when the pair of lower frames are immersed in the upper frame, Since the depth of the recess is set so that the casters can be immersed in the recess, when the pair of lower frames are recessed with respect to the upper frame, the lower end surface of the furniture, that is, the stable installation state by the pedestal Can hold. On the other hand, when the lower frame projects from the upper frame of the moving support device, the casters project from the lower end surface of the furniture and can be easily rolled, and the furniture can be moved with a slight force.

[0013]

【Example】

 The details of the present invention will be described below based on specific embodiments. FIG. 1 shows an exploded perspective view of the heavy load moving and supporting apparatus of the present invention. In the example shown in the figure, inside the upper frame 1 where the weight is placed on the upper surface, a caster 5 ... The pair of lower frames 7 1, 7 are connected to each other. The shaft 3 is attached by a washer 9 and a slip-off prevention tool 11, and a spring 13 is interposed between the lower surface edge of the upper frame 1 and the upper surface edge of the lower frame 7 so that the lower frame 7 is attached to the upper frame 1. It gives an elastic force that pushes against.

Top plates 15 and 15 are provided on the upper surface of the upper frame 1 to facilitate installation of heavy objects and the like, and serve as a pressure contact surface of a pressure contact surface of a connecting link described later. A first pivot shaft 17 rotatably supported at a fixed position is provided at a proper position on the upper frame. The tip of the first pivot 17 is processed into, for example, a quadrangular cross section, and ensures that the rotation lever 19 attached to this portion is fixed in the rotation direction. Furthermore, one end of a connecting member 25 is fixed to the 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. Further, one end of each of the side faces 27 of the pair of lower frames 7, 7 serves as a pressure contact surface 29 with the upper frame 1 and is rotatable along the side faces 27 of the lower frames 7, 7 and The connection links 35 ... Are pivotally supported by the second pivots 33, 33 in a positional relationship in which the distance between the upper surface 31 of the frames 7, 7 and the pressure contact surface 29 can be changed. A washer 37 and a nut 39 are attached. Of the connecting links 35, a pair of connecting links 35, 35 facing each other are connected and fixed by the second pivot 33. Further, a pin 41 is provided at the other end of the connecting member 25, and two connecting rods 47, 47 are provided between the other ends of the connecting links 35, 35 by a washer 43 and a pull-out preventing device 45. It is connected.

Next, a usage mode in the case where such a heavy weight moving and supporting device is installed on the bottom of furniture will be described with reference to the subsequent FIGS. 2 and 3. First, FIG. 2 shows the structure of the furniture bottom part in a normally installed state. In the figure, 51 is furniture and 57 is the lower end surface of the furniture, that is, a pedestal. The moving support device of the present invention is installed on the bottom of the furniture by fixing the upper frame 1 to the inner surface of the base wheel 57 with wood screws 59. In the state shown in the figure, the rotation lever 19 is located at the left end in the figure, whereby the connecting member 25 faces the right direction, and accordingly, the connecting rod 47 is pushed rightward, and the connecting link 35 of the connecting link 35 moves. As a result of the pressing surface 29 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. The casters 5 are in a free state. Therefore, the furniture is in a stable installed state by the pedestal 57.

Continuing with this, FIG. 3 shows a state in which the furniture is lifted and the casters 5 work so that the furniture can be moved. In the state of this figure, the lever 19 for rotation is located at the right end in the figure, whereby the connecting member 25 faces the left direction, and accordingly, the connecting rod 47 is pushed to the left direction, and the connecting link 35 is pressed. As a result of the surface 29 pressing the top plate 15 of the upper frame 1, the lower frame 7 projects with respect to the upper frame 1 and the casters 5 act to allow the pedestal 57 to move in a state of floating with respect to the installation surface 53. Has become.

Here, in the state of FIG. 3, the contact point between the pressure contact surface 29 and the top plate 15 of the upper frame 1 is rotated clockwise to the connecting link 35, that is, the connecting rod 47 is directed leftward by adding weight from above. It is safe to set it to a position where a turning force that pushes it in is given so that the released state does not occur due to the weight of furniture.

That is, as shown in the plan view of FIG. 4, when the furniture is lifted up, a weight is added from the top to push the connecting rod 47, but the rotary lever 19 contacts the side surface of the upper frame 1. As a result, the rotary lever 19 will not rotate. Further, as is clear from the position of the connecting member 25 shown in the figure, a stable state at the time of ascending is obtained at a position slightly lower than the most elevated position, so that the connecting link 35 is disengaged due to the weight of the furniture itself. Furniture does not “fall”. Therefore, when the furniture is lowered from this raised state, the connecting member 25 rotates clockwise with the rotation of the rotary lever 19, so that the furniture once rises slightly and then falls. It can be said that this is an extremely important design item in terms of safety measures.

FIGS. 5 and 6 show an example in which such a moving support device is attached to furniture. FIG. 5 shows a normal installation state, and FIG. 6 allows the furniture to be raised and moved by the casters 5. It represents the state. In this example, the hem plate 61 is detachably attached, and the movable support device installed at the bottom is housed inside, which is preferable in terms of design.

The moving support device of the present invention as described above can be widely applied not only to furniture but also to electric appliances such as refrigerators, industrial machines for production, etc., other than furniture.

[0021]

[Effect of device]

 The moving support device for heavy goods according to the present invention solves the conventional problems by the above-described operation, has a simple structure, is extremely easy to handle, and is capable of cost reduction. And furniture using it can be provided. Moreover, it is possible to structurally eliminate the disconnection of the ascending connecting link due to the addition of weight at the time of ascending, which is extremely safe. These effects can be obtained by finally converting the horizontal movement of the rotating lever into vertical movement, and by making the lower frame project and retract with respect to the upper frame, the casters move in and out. And, as mentioned above, levers can be applied everywhere, and even small forces can raise large household appliances. Therefore, it can be applied to other than household appliances as a moving support device for heavy objects, and its use is extremely widespread.

[Brief description of drawings]

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

FIG. 2 is an explanatory cross-sectional view of a main part showing a regular installation state of a furniture bottom part to which the heavy-weight moving and supporting device of the present invention is attached.

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 heavy-weight moving and supporting device of the present invention is attached, works and becomes movable.

FIG. 4 is an explanatory plan view of a main part showing a state in which the caster works to move the furniture bottom part to which the heavy load moving and supporting device of the present invention is attached.

FIG. 5 is a front view showing a state in which furniture equipped with the heavy load moving and supporting device of the present invention is always installed.

FIG. 6 is a front view showing a movable state of furniture equipped with the heavy weight moving and supporting device of the present invention.

[Explanation of symbols]

 1 Upper Frame 5 Casters 7 Lower Frame 17 First Pivot 19 Rotating Lever 25 Connection Member 33 Second Pivot 35 Connection Link 47 Connection Rod

Claims (2)

[Scope of utility model registration request] 1. An upper frame on which a heavy object is installed, a pair of lower frames which are connected to the upper frame inside the upper frame in a retractable manner and have casters on the lower surface, and an upper part. A first pivot that is rotatably supported at a fixed position on the frame, a rotation lever that is fixed to the first pivot, one end of which is fixed to the first pivot, and a first pivot. A connecting member, the other end of which is rotatable with a constant radius of rotation with rotation of the link member, and a link member attached to the pair of lower frame side surfaces, one end of which is a pressure contact surface with the upper frame. And a coupling link pivotally supported by a second pivot in a positional relationship that is rotatable along the side surface of the lower frame and that the distance between the upper surface of the lower frame and the pressure contact surface can be changed by the rotation. Connecting rod connected between the other end of the and the other end of the connecting link The mobile support device heavy equipped with. 2. A furniture in which a recess is provided in a bottom of a main body and a heavy weight moving support device is installed in the recess, wherein the heavy weight moving support device includes an upper frame on which the furniture is installed. A pair of lower frames that are connected to the upper frame in a retractable manner with respect to the upper frame and that have casters on the lower surface, and a pair of lower frames that are rotatably supported at fixed positions on the upper frame. One pivot, a rotation lever fixed to the first pivot, one end fixed to the first pivot, and the other end having a constant radius of rotation with the rotation of the first pivot. A connecting member that is rotatable, and a link member that is attached to the side surfaces of the pair of lower frames, and has one end serving as a pressure contact surface with the upper frame and rotatable along the side surfaces of the lower frame. The rotation changes the distance between the upper surface of the lower frame and the pressure contact surface. And a connecting rod pivotally supported by a second pivot in a positional relationship, and a connecting rod connected between the other end of the connecting member and the other end of the connecting link. The device is a caster that protrudes from the lower end surface of the furniture when the pair of lower frames protrudes from the upper frame, and the casters inside the recess when the pair of lower frames retracts from the upper frame. The furniture is characterized in that the depth of the recess is set so that can be immersed.