JPH10108741A - Elevating device and elevating unit using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintenance of a sliding device and to secure an area around an axis part on a housing side in an elevating device for elevating an object to be moved. SOLUTION: This elevating device is constituted of the housing 5, the object to be moved 6 which is provided to be freely retractable from the housing, rotary arms 7 and 8 supporting the object 6 to be freely movably and the sliding device 11 installed at the object 6, and the device 11 is provided on the side of the object 6. Thus, since the object 6 is moved downward at the time of drawing the object 6, the device 11 can be confirmed directly to easily confirm abnormality such as abrasion. In addition, since only pivotal shafts 9 and 10 of the rotary arms 7 and 8 are fixed to the housing 5, areas around the shafts 9 and 10 are freely used and a spring, a buffering device 22, etc., connected to the shaft part can be designed and installed without receiving restrictions in terms of a size and a shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device.

[0002]

2. Description of the Related Art Conventionally, a lifting apparatus of this type has been disclosed in Japanese Patent Laid-Open Publication No.
There is one as described in Japanese Patent No. 19232.
As shown in FIG. 6, the apparatus includes a casing 1, a movable body 2, a slide member 3 installed on an inner surface of the casing 1 so as to be horizontally movable, and a side portion of the movable body 2. And a rotary arm 4 having one end pivotally supported by the slide member 3 and the other end pivotally supported by the slide member 3. 1, the movable body 2 can be pulled out to the front lower side.

[0003]

However, in the conventional elevating device, the slide member 3 is installed on the inner surface of the housing 1. The sliding members 3 are liable to be worn or damaged due to mutual movement.
Since it is installed inside the housing 1, it is difficult to directly check it, it is difficult to check for abnormalities such as wear, and it is also difficult to perform maintenance work. In particular, the problem has been increased because the housing is mounted at a high place.

[0004] Further, since the slide member 3 is installed on the inner surface of the housing 1, there is a restriction on the size of the pivot that pivotally supports the rotating arm 4 to the housing 1. Normally, a spring, a shock absorber, and the like are connected to the pivot, and two pivots may be integrally formed as a unit. A large space is required around the pivot. However, if the slide member 3 is installed in the housing as in the related art, there is a problem that the area around the pivot is limited, and the design of the pivot is limited. In the case where a spring, a shock absorber, and the like are connected, it is necessary to install the entirety on the slide member 3, and the slide member 3 becomes large.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a slide device is provided on a movable body side.

[0006] According to the above invention, since the slide device is installed on the movable body side, it is moved downward together with the movable body when the movable body is pulled out, and is directly installed on the outer surface. It is easy to confirm, it is easy to confirm abnormalities such as wear, and maintenance work such as lubrication can be easily performed. Also, since only the pivot of the support means is attached to the support substrate, the area around the pivot can be freely used, and the springs and shock absorbers connected to the pivot are not restricted in dimension and shape. Can be designed and installed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to a first aspect of the present invention is directed to a housing, a movable body provided in the housing so as to be able to move in and out, a slide device installed in the movable body, and one end side of the housing. And a rotating arm having the other end pivotally supported by a sliding portion of the slide device.

[0008] According to this configuration, since the slide device, which is easily worn or damaged due to mutual movement, is installed on the movable body, when the movable body is pulled out, it is moved downward together with the movable body. Since it is installed on the outer surface, it is easy to check directly, it is easy to check abnormalities such as wear, and maintenance work such as lubrication can be easily performed. Further, since only the pivot of the support means is provided on the support substrate, the area around the pivot can be effectively used for installing a spring or a shock absorber.

The invention according to claim 2 has a horizontal holding means for keeping the movable body substantially horizontal, and the movable body can be used as a storage container or the like.

[0010] In the invention according to claim 3, the rotating arm has a parallel link structure, and the movable body can be kept substantially horizontal, so that the movable body can be used as a storage container. it can.

Further, the invention according to claim 4 has an operation regulating means for regulating the movement locus of the movable body, so that the movable body can be raised and lowered along an arbitrary locus within a possible range. In addition, the movable body supported in the housing whose depth is wider than the height can be lowered downward without contacting the bottom surface of the housing.

According to a fifth aspect of the present invention, the operation restricting means is a guide groove provided on the movable body, and an engaging portion movable along the guide groove is provided on the rotary arm. In addition, the supported movable body can be moved up and down along an arbitrary trajectory within a possible range. In addition, since the guide groove, which is easily worn or damaged due to mutual movement, is provided on the movable body, the guide groove moves downward together with the movable body when the movable body is pulled out, and is installed on the outer surface. It is easy to confirm directly from the above, it is easy to confirm abnormality such as wear, and maintenance work such as lubrication can be easily performed. Further, since the guide groove is not attached to the housing, the area around the pivot can be effectively used for installing a spring or a shock absorber.

According to a sixth aspect of the present invention, the operation restricting means is constituted by a movable body at one end and an auxiliary arm pivotally supported at the other end by a rotating arm. The movable body can be raised and lowered. Instead of restricting the operation by the mutual movement between the guide groove and the engaging portion, the operation can be restricted only by the turning movement of the auxiliary arm, and the configuration can be simplified and the strength and durability can be improved.

Further, the invention according to claim 7 is provided with a tilt correcting means for correcting tilting of the movable body, and the sliding device and other sliding means are provided by tilting the movable body from a predetermined position. It is possible to prevent the operability of the part from deteriorating and the movement of the movable body to become non-smooth.

Further, according to the invention described in claim 8, the inclination correcting means is constituted by a support member which comes into contact with the bottom of the movable body, so that the inclination of the movable body can be easily corrected.

Further, the invention according to claim 9 is provided with a spring acting on the movement of the movable body, so that the impact at the end of descent can be reduced and the movable body is pushed back. The power at the time can be reduced.

Further, the invention according to claim 10 is provided with a shock-absorbing device having resistance to the movement of the movable body, so that the descending speed of the movable body is reduced, and the impact at the end of the descent is reduced. It can reduce safety and increase safety and durability.

Further, the invention according to the eleventh aspect is provided with a shock absorber having resistance only to the movement of the movable body in the direction in which the movable body is pulled out. While reducing the descent speed of the movable body, reducing the impact at the end of descent and increasing safety and durability, when pushing back the movable body, there is no resistance and it is pushed in without applying extra force Is what you can do.

According to a twelfth aspect of the present invention, a rotating arm is provided on each of opposing surfaces of a movable body, and connecting means for interlocking the movement of the rotating arm is provided. The movement of the supporting member and the guide portion is smooth, and the movable body can be raised and lowered smoothly.

According to a thirteenth aspect of the present invention, a movable body supported at a predetermined position, a slide device installed on the movable body, and one end side pivotally supported by a slide portion of the slide device. The opposite side is composed of a rotating arm that can be supported on a supporting substrate that supports the movable body, and can be used by being attached to any supporting housing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a side view of a lifting device according to Embodiment 1 of the present invention.

In the figure, a movable body 6 such as a rack is supported in a cabinet 5 as a housing by two rotating arms 7 and 8 having a parallel link structure. The cabinet 5 is pivotally supported by pivots 9 and 10, and the other end is pivotally supported by a sliding portion 11 a of a slide device 11 installed on a movable body by pivots 12 and 13. Further, a guide groove 14 is provided on the movable body 6 as an operation restricting means, and an engaging portion 15 that moves along the guide groove 14 is provided on the rotary arm 7. Further, the support roller 1 serves as a tilt correction unit for correcting the tilt of the movable body 6.
6 is attached to the bottom of the cabinet 5. The pivot unit 17 shown by a two-dot chain line has a rotating arm 7,
8, pivots 9 and 10 are installed, and springs acting on the rotation of the rotary arms 7 and 8 and shock absorbers (not shown) such as hydraulic dampers are housed therein. is there. For example, when used as a household storage container, a coil spring having a diameter of about 30 mm and a length of about 200 mm and a cylinder type shock absorber are provided.

Next, the operation and action will be described. The movable body 6 can perform a turning movement by the rotary arms 7 and 8 and a linear movement by the slide device 11. It can be freely moved from the supported state. If this device is installed at a high place,
The movable body 6 supported at a high place can be moved to a low place for use. Note that the cabinet 5 does not need to be a housing, and may be any that can support the pivots 9 and 10.

The rotating arm 7 serves as parallel holding means.
By forming the parallel link 8, the movable body 6 can be moved while always being kept in the substantially horizontal state, which is the same as the housed state, and can be used for a vertically movable storage device.

Here, the case where the rotating arms 7 and 8 have a parallel link structure as the parallel holding means has been described, but a method of holding the horizontal by using a gear or a wire may be considered.

Further, a guide groove 14 is provided on the movable body 6 as an operation restricting means, and an engaging portion 15 which moves along the guide groove 14 is provided on the rotary arm 7, so that the guide groove 1 is provided.
The movement trajectory of the movable body 6 is restricted by the relationship between the movable member 4 and the engagement portion 15, and the movable body 6 moves to the pulled-out state C while taking the trajectory shown by the one-dot chain line B in the figure. Trajectory B
Can be arbitrarily restricted within the range possible by the operation restricting means, but if the trajectory is set as shown in the figure, the object stored in a cabinet whose depth is wider than its height as shown in the figure The movable body 6 can be pulled out and moved downward. Since the movable body 6 can be pulled out from the inside of the housing having the bottom surface, a cabinet using the lifting device is installed immediately above a storage, a refrigerator, or a wall, and the movable body in the storage cabinet is used by moving up and down. can do. In addition, since the guide groove 14 which is a sliding portion is provided on the movable body 6 side, the guide groove 14 is lowered downward when the drawer is pulled out, so it is easy to directly check it, and it is easy to check for abnormalities such as abrasion. Maintenance work can be easily performed.

Further, by providing the support roller 16 for correcting the tilt of the movable body 6, the movable body 6 is prevented from deviating from a predetermined position due to rattling of the pivot portion and the sliding portion. . If the movable body 6 deviates from the predetermined position, the operability between the slide device 11 or the guide groove 14 and the engagement portion 15 deteriorates, and the operation of the movable body 6 may become non-smooth. By means of this, a remarkable inclination can be corrected. Note that, here, a supporting roller that makes rolling contact is used as the inclination correcting means, but a member that makes sliding contact may be used.

The slide device 11 and the guide groove 1
Since 4 is provided on the movable body 6 side, it is easy to directly check because it is lowered when pulled out, it is easy to check for abnormalities such as wear, and maintenance work such as lubrication can be easily performed. it can. Furthermore, the pivot unit 17 mounted at the position shown by the two-dot chain line in the figure requires a relatively large space because a spring and a shock absorber are installed.
Since the slide device 11 and the guide groove 14 are mounted on the movable body 6, only the pivot unit 17 needs to be mounted on the cabinet 5;
A wider space can be used than in the case where the guide groove 14 is attached to the cabinet 5.

In the first embodiment, a plurality of configurations and actions are shown at the same time. However, the present invention is not limited to a configuration in which all of them are applied.

(Embodiment 2) FIG. 2 is a side view of a lifting device according to Embodiment 2 of the present invention.

Here, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals. In FIG. 2, an auxiliary arm 20 is installed as an operation restricting means, one end of which is pivotally supported by a movable body by a pivot 18 and the other end of which is pivotally supported by a rotating arm 7 by a pivot 19.

The operation and operation are the same as those of the first embodiment, except that the auxiliary arm 20 acts to regulate the movement locus of the movable body 6, and the movable body 6 moves along the dashed line B in the figure. While moving to the state C pulled out.

As compared with the case where the combination of the guide groove and the engaging portion is used as the operation restricting means, the regulation of the movement locus of the movable body 6 is restricted, but the combination of the guide groove and the engaging portion is used. Therefore, only one arm can be regulated without any modification, and the structure can be simplified, and the strength and durability can be improved.

(Embodiment 3) FIG. 3 is a side view of a lifting device according to Embodiment 3 of the present invention.

Here, the same components as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals. In FIG.
A spring 21 is provided in the pivot unit 17.

The spring 21 acts on the movement of the movable body 6 and applies a spring force to the rotation of the rotary arm 8 here. The operation and operation are the same as those in the first embodiment, but if the movable body 6 is pulled out, the spring force acts,
It is possible to reduce the impact when the movable body 6 is completely lowered,
The durability and safety of the device can be improved. Further, since the spring 21 acts in a direction to assist the force when the movable body 6 is pushed back, the movable body 6 can be easily pushed back into the cabinet 5.

It is not necessary to apply a spring force over the entire range of movement of the movable body 6, and it is possible to apply a spring within an arbitrary range, for example, after the movable body 6 starts to descend. Good.

Further, if the spring force is always applied when the movable body 6 is stored, the movable body 6 can be prevented from popping out.

Further, in the third embodiment, a shock absorber 22 having resistance to the turning of the rotary arm 8 is installed in the pivot unit 17. If the movable body 6 is moved and the rotary arm 8 is rotated, the resistance of the shock absorber 22 acts on the rotation, and the impact at the time of completion of the lowering of the movable body 6 can be reduced. Safety can be improved.

It is not necessary to apply a buffering force in the entire moving range of the movable body 6, and it is possible to operate the shock absorber in an arbitrary range, for example, after the movable body starts descending. Good.

The shock absorber 22 may be configured to have resistance only to movement of the rotating arm 8 in the direction in which the movable body 6 is pulled out. In this case, if the movable body 6 is moved and the rotating arm 8 is turned, the resistance of the shock absorber 22 acts on the turning, and the impact at the time of the completion of the lowering of the movable body 6 can be reduced. Durability and safety can be improved. Further, when the movable body 6 is pushed back, no resistance force is exerted, so that the movable body 6 can be returned with the same force as when the shock absorber 22 is not installed.

It is not necessary to apply a buffering force in the entire moving range of the movable body 6, and it is possible to operate the buffering device in an arbitrary range, for example, after the movable body starts descending. Good.

(Embodiment 4) FIGS. 4A and 4B show a lifting apparatus according to Embodiment 4 of the present invention.

Here, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals. In the fourth embodiment, the rotating arms 7 and 8 and the slide device 11 are provided on the left and right sides of the movable body 6, and a connecting means 23 for interlocking the movement of the rotating arms 7 and 8 is provided.

The operation and operation are the same as those of the first embodiment, except that the left and right rotating arms 7 and 8 are added to the operation of the first embodiment.
The movement of the movable body 6 can be performed smoothly because the movements of the movable body 6 are synchronized.

(Embodiment 5) FIG. 5 is a side view of a lifting unit according to Embodiment 5 of the present invention.

The structure is the same as that of the cabinet 5 of the first embodiment.
When the pivot unit is attached to an existing wall surface, cabinet, or the like, the same operation and action as in the first embodiment can be performed. In addition, a support roller can be separately provided.

Although the pivot unit is integrated with the pivot unit 17 as a pivot unit, it is not necessary to particularly integrate the pivot unit, as long as the pivots 9 and 10 can be individually attached to the support substrate.

[0049]

As described above, according to the present invention, since the slide device is installed on the movable portion, it is located below when descending, so that maintenance work can be easily performed and the housing can be easily operated. Has an advantageous effect that the area around the pivot can be effectively used for installing a spring, a shock absorber and the like since only the pivot is attached.

When the movable body is configured to be kept substantially horizontal, it can be used for storage equipment and the like.

Further, by using the operation restricting means,
Since the movable pair can take an arbitrary trajectory within a possible range, the movable body supported in the housing having the bottom surface can be moved up and down, and the depth of the movable body can be increased relative to the height. The supported movable body can be lowered downward without contacting the bottom surface of the housing.

When the operation restricting means is a guide groove provided on the movable member, the guide groove is provided on the movable portion. Work can be performed easily.

When the operation restricting means is an auxiliary arm, the operation can be restricted only by the turning movement of the arm without using a guide groove or a sliding portion, so that the structure is simplified, and the strength and durability are improved. Can be improved.

The supporting means is configured to keep the movable body substantially horizontal, and in the case of a tilt correcting means for correcting the tilting of the movable body, the movable body is tilted to engage with the slide device or the guide groove. It is possible to prevent the relative relationship with the joint portion from being shifted and the operation from becoming unsmooth.

Further, when a spring acting on the movement of the movable body is provided, it is possible to reduce the impact when the movable body is completely lowered, thereby improving the durability and safety of the apparatus. it can. Further, since the spring acts in a direction to assist the force when pushing back the movable body, the movable body can be pushed back into the housing easily.

In the case where a shock absorbing device having resistance to the movement of the movable body is provided, it is possible to reduce the impact when the movable body is completely lowered, thereby improving the durability and safety of the apparatus. be able to.

Further, when a shock absorber having resistance only to the movement of the movable body in the direction in which the movable body is pulled out is provided, it is possible to reduce the impact at the time of completion of the lowering of the movable body. The durability and safety of the device can be improved. Further, when the movable body is pushed back, no resistance force is exerted, so that the movable body can be returned with the same force as when the shock absorber is not installed.

Further, by linking the movement of the left and right support means by the connecting means, there is an effect that the movable body can be moved smoothly.

[Brief description of the drawings]

FIG. 1 is a side view of a lifting device according to a first embodiment of the present invention.

FIG. 2 is a side view of a lifting device according to a second embodiment of the present invention.

FIG. 3 is a side view of a lifting device according to a third embodiment of the present invention.

FIGS. 4A and 4B are side views of a lifting device according to a fourth embodiment of the present invention.

FIG. 5 is a side view of a lifting device according to a fifth embodiment of the present invention.

FIG. 6 is a schematic view of a conventional lifting device.

[Explanation of symbols]

 Reference Signs List 5 cabinet (casing) 6 movable body 7, 8 rotating arm 9, 10, 12, 13, 18, 19 pivot 11 sliding device 14 guide groove 15 engaging portion 16 support roller 17 pivot unit 20 auxiliary arm 21 spring 22 buffer Device 23 Connecting means

Claims (13)

[Claims] 1. A housing, a movable body provided to be able to move in and out of the housing, a sliding device installed on the movable body, one end of the housing and the other end sliding of the sliding device. An elevating device having a rotating arm pivotally supported by a moving part. 2. The elevating device according to claim 1, further comprising horizontal holding means for keeping the movable body substantially horizontal. 3. The lifting device according to claim 1, wherein the rotating arm has a parallel link configuration. 4. The lifting device according to claim 1, further comprising an operation restricting means for restricting a movement locus of the movable body. 5. The lifting device according to claim 4, wherein the movement restricting means is a guide groove provided on the movable body, and an engaging portion movable along the guide groove is provided on the rotary arm. 6. The elevating device according to claim 4, wherein the movement restricting means is a movable body at one end and an auxiliary arm pivotally supported at the other end by a rotating arm. 7. The lifting device according to claim 2, further comprising an inclination correcting means for correcting an inclination of the movable body. 8. The elevating device according to claim 7, wherein the inclination correcting means is a support member that contacts the bottom of the movable body. 9. The lifting device according to claim 1, further comprising a spring acting on the movement of the movable body. 10. The lifting device according to claim 1, further comprising a buffer device having resistance to the movement of the movable body. 11. The lifting device according to claim 1, further comprising a shock absorber having resistance only to movement of the movable body in a direction in which the movable body is pulled out. 12. The lifting device according to claim 1, wherein the rotating arms are respectively provided on opposing surfaces of the movable body, and connecting means for interlocking the movement of the rotating arms is provided. 13. A movable body supported at a predetermined position, a slide device installed on the movable body, and one end pivotally supported by a sliding portion of the slide device, and the opposite side is provided with a movable body. An elevating unit composed of a rotating arm that can be supported on a supporting substrate that supports it.