JPH10127366A - Elevating and lowering device and elevating and lowering unit using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintainability of the guide groove of an elevating and lowering device for elevating and lowering a body to be moved and to secure the shaft part peripheral area of a case body. SOLUTION: This device is constituted of the body 10 to be moved provided in a cabinet 9 so as to be freely taken in and out, first and second supporting arms 12-15 for freely movably supporting the body 10 to be moved and the guide groove 23 and an engaging part 24 for controlling the movement of the body 10 to be moved, the guide groove 23 is provided on the side of the body to be moved and the engaging part 24 is installed at a position other than a part on the shaft of the first supporting arm 12. The guide groove 23 is easily directly confirmed since it is moved downwards along with the body 10 to be moved, the abnormality of wear or the like is easily confirmed and the maintenance work of oiling or the like is easily performed as well. Also, since only the shafts of the supporting arms 12-15 are attached to the cabinet 9, the area around the shafts is freely utilized.

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, this type of lifting / lowering device is disclosed in
There is one as described in Japanese Patent Publication No. 184725. This device has a housing 1 as shown in FIG.
The movable body 2, the first arm 3, 4, the second arm 5, 6 each forming a parallel link, the engaging portion 7 provided at an appropriate position on the second arm 6, and the inner surface of the housing 1. A guide groove 8 is provided to regulate the movement locus of the engaging portion 7 provided. The movement locus of the movable body 2 is regulated by the engaging portion 7 and the guide groove 8, and the movable body 2 is moved forward and downward. Had to be withdrawn.

[0003]

However, in the conventional elevating device, the guide groove 8 is provided on the inner surface of the housing 1. Since the guide groove 8 and the engaging portion 7 move reciprocally, wear and breakage are liable to occur. However, since the guide groove 8 is installed inside the housing 1, it is difficult to directly confirm it, and abnormalities such as wear are caused. However, it is difficult to check the maintenance and maintenance work. Particularly, since the housing 1 is mounted at a high place, the problem has been further increased.

In addition, since the guide groove 8 is provided on the inner surface of the housing, the pivots for pivotally supporting the first arms 3 and 4 to the housing 1 are restricted in size. 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 guide groove 8 is installed in the housing 1 as in the related art, FIG.
However, only the area indicated by hatching A in (1) can be used, the area around the pivot is limited, and the design of the pivot is limited.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a guide portion such as a guide groove for regulating a movement locus of a movable body is provided on the movable portion.

According to the invention, since the guide portion such as the guide groove is provided on the movable body side, it is moved downward together with the movable body when the movable body is pulled out, and is further provided on the outer surface. Therefore, it is easy to confirm directly, 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 arm is attached to the housing, 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 An elevating device according to claim 1 of the present invention comprises a housing, a movable body provided to be able to enter and exit the housing, and
A support arm configured to pivotally support one end of each of the first arm and the second arm so as to be rotatable; the other end of the first arm is provided in the housing; the other end of the second arm; A guide portion pivotally supported by the movable body and regulating a movement locus of the movable body is provided on the movable body side, and an engaging portion movable along the guide portion is provided on the first arm. It is installed at a position other than on the Axis.

The moving locus of the movable body is regulated by the guide portion and the engaging portion, and the movable body supported in the housing can be moved up and down along an arbitrary locus within a possible range. The movable body supported in the housing having a wider depth can be lowered toward the front without contacting the bottom surface of the housing. In addition, since the guide portion that is easily worn or damaged due to mutual movement is installed on the movable body, it is moved 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 only the pivot of the support arm is provided on the support substrate, the area around the pivot can be effectively used for installing a spring or a shock absorber.

Further, by providing the engagement portion on the first arm, the movement of the movable body can be uniquely defined only by the relative relationship between the guide portion and the engagement portion. Further, by changing the position of the engaging portion, the degree of freedom in designing the guide portion is increased, and the movable area of the movable body can be increased.

According to a second aspect of the present invention, there is provided an elevating device, wherein a housing, a movable body provided to be able to enter and exit the housing, and one ends of a first arm and a second arm are pivotally supported. The first arm and the second arm are pivotally supported by the movable body, and the other end of the first arm is pivotally supported by the movable body. Have a parallel link configuration, and a guide section for regulating the movement trajectory of the movable body is provided on the movable body side, and an engaging section movable along the guide section is provided on the first arm. Things. Since the first and second arms each constitute a parallel link, the movable body can be kept substantially horizontal, and the movable body can be used as a storage container.

Further, in the lifting device according to the third aspect, the first arm and the second arm are connected via an intermediate connecting portion,
As a result, the position of the pivot connecting the first arm and the second arm can be arbitrarily changed, so that the arms collide with each other and become inoperable, the movement of the parallel link has an inflection point, or It is possible to prevent the case from being out of the range of the height of the housing and being unmountable.

Further, in the lifting device according to the fourth aspect, the angle of the second arm when the movable body is stored is 0 ° from the front horizontal plane.
From 90 °. In the configuration in which the second arm passes through the vertical position (90 °), when the specified position of the movable body is shifted due to backlash of the pivot portion or the like,
In the vicinity of the vertical position, the first arm and the second arm do not interlock with each other, and only the second arm pivots, which may significantly impair the operability. By setting the angle of the second arm at the time of storage to the above range, it is possible to avoid passing through this position and perform a smooth operation.

Further, in the lifting device according to the fifth aspect, the guide portion is made of resin, and the contact between the guide portion and the engaging portion is a rolling contact. When the guide portion is made of a resin material, it is inferior in terms of abrasion resistance and strength as compared with the case where it is made of metal. And smoothness of operation can be improved.

Further, the lifting device according to claim 6 is provided with an inclination correcting means for correcting the inclination of the movable body,
It is possible to prevent the movement of the movable body from becoming non-smooth due to the deterioration of the operation of the guide portion and the engagement portion due to the inclination of the movable body.

According to a seventh aspect of the present invention, the front arm of the two first arms having the parallel link structure is elongated to prevent the movable body from tilting forward when the movable body is pulled out. In this case, the parallel link configuration of the first arm is slightly broken so that the movable body is slightly inclined backward when the movable body is pulled out. Accordingly, it is possible to prevent the movable body from tilting forward due to the backlash of the pivot portion or the deflection of the member due to the weight of the movable body or the mounted object, and to prevent the mounted object from falling.

In the lifting device according to the present invention, of the pivots of the first arm having the parallel link structure, the distance between the pivots connected to the second arm is made larger than the distance between the pivots pivotally supported by the housing. When the movable body is pulled out slightly, the movable body tilts slightly backward when the movable body is pulled out, and slightly forward when the movable body is stored. It is designed to tilt. This prevents the movable body from tilting forward due to rattling of the pivot or bending of the member due to the weight of the movable body and the load when the movable body is pulled out, and prevents the load from falling etc. Can be.
When the movable body is stored, the movable body can be prevented from tilting backward, and the movable body can be prevented from contacting the housing due to the inclination. Further, it is possible to prevent the relative position between the guide portion and the engagement portion from being shifted due to the inclination of the movable body, thereby preventing the operability from being deteriorated.

The lifting device according to a ninth aspect of the present invention is provided with auxiliary supporting means for supporting the movable body, and the arm and the pivot are used to share and support the weight of the movable body and the object mounted on the movable body. The load on the portion can be reduced, and the durability and the like can be improved. Further, since the load applied to the guide portion and the engaging portion is reduced, the operation of the engaging portion is smooth, and the operability of the movable body is improved. In addition, since the movable body also serves to prevent the inclination of the movable body, it is possible to prevent the movement of the movable body from becoming non-smooth due to the deterioration of the operation of the guide portion and the engaging portion due to the inclination of the movable body. .

Further, in the lifting device according to the tenth aspect, a support roller is provided on the bottom of the movable body as an auxiliary support means, so that the support roller and the movable body can be easily installed. A smooth operation can be obtained from the rolling contact.

In the eleventh aspect of the present invention, the shaft of the engaging portion is installed at a position distant from the driving axis on the first arm. When the shaft of the engaging portion is moved to a position away from the pivot axis of one first arm, the shape of the guide portion is different even when the movable body has a similar movement trajectory. This allows
When the shape of the guide portion is deformed, the size is reduced, or when the guide portion is installed on the axis, it can be set to take an immovable trajectory.

Further, the lifting device according to the twelfth aspect is provided with a spring acting on the movement of the movable body, so that it is possible to reduce the impact at the end of the descent and to push back the movable body. Power can be reduced.

According to a thirteenth aspect of the present invention, there is provided an elevating device provided with a shock absorber having resistance to the movement of the movable body, thereby reducing the descending speed of the movable body and reducing the impact at the end of the descent. In addition, safety and durability can be increased.

Further, the lifting device according to claim 14 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 body, reducing the impact at the end of descent and increasing safety and durability, when pushing back the movable object, there is no resistance and it is pushed in without applying extra force Can be done.

According to a fifteenth aspect of the present invention, there is provided an elevating device, wherein a covering means is provided for covering a periphery of a connecting portion between the first arm and the second arm. By covering the portion where the plates intersect or the pivot portion, it is possible to prevent foreign matter and the like from entering the portion, to suppress malfunction, and to obtain a favorable appearance because the intersecting members are hidden. .

According to a sixteenth aspect of the present invention, the support arms are provided on opposing surfaces of the movable body, and connecting means for interlocking the movement of the support arms are provided. Since the movement of the arm is synchronized and the kinking is eliminated, the movement of the support arm and the guide section becomes smooth,
The movable body can be raised and lowered smoothly.

Further, the lifting unit according to a seventeenth aspect is characterized in that the movable body, a support arm formed by pivotally pivoting one end of each of the first arm and the second arm to each other, and the movable body, A guide portion provided and an engagement portion movable along the guide portion and provided at an appropriate position on the support arm. The other end of the first arm pivotally supports a movable body, and The other end of the two arms can be pivotally supported on a housing supporting the movable body.

The lifting unit according to claim 18 is the lifting unit according to claim 17, wherein the first arm and the second arm each have a parallel link configuration.

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

In the figure, a movable body 10 such as a rack is supported on a cabinet 9 as a housing by a support arm 11, and the support arm 11 has two first arms 12, 13, 2 having a parallel link configuration. The second arm 14, 1 of the book
5 and an intermediate arm 16. It is clear from the drawing that only the intermediate arm 16 has both the first and second arms in a parallel link configuration. The support arm 11 is pivotally supported by the cabinet 9 by pivots 17 and 18 and pivotally supported by the movable body 10 by pivots 19 and 20.
The first arms 12 and 13 and the second arm 1 at the pivots 21 and 22
4 and 15 are connected. Further, a guide groove 23 is provided on the movable body 10 as a guide, and the guide groove 23 is provided.
An engagement portion 24 that moves along the first arm 12 is provided on the first arm 12. The axis of the engagement portion 24 is installed at a position other than on the pivot 21 of the first arm 12. The pivot unit 25 shown by a two-dot chain line includes a pivot 1 of the first arm.
7 and 18 are provided, and the first arms 12 and 13 are provided.
A spring and a shock absorber (not shown) such as a hydraulic damper are housed therein, and the pivot unit 25 is attached to the cabinet 9.

Next, the operation and operation will be described. When the movable body 10 supported in the cabinet 9 and in the state B is pulled out to the right, the first and second arms each have a parallel link configuration. The movable body 10 moves while keeping substantially horizontal. The movement trajectory is restricted by the relationship between the guide groove 23 and the engagement portion 24, and the movable body 10 moves to the pulled-out state D while taking the trajectory shown by the one-dot chain line C in the figure. The movement trajectory C can be arbitrarily regulated within the range possible by the guide groove 23. However, if the movement trajectory C is set to the trajectory shown in the drawing, the depth of the cabinet 9 is wider than the height as shown in the drawing. It is possible to pull out the movable body 10 housed in the box and move the movable body 10 to the front lower side. Since the movable body 10 can be pulled out from the inside of the cabinet 9 having the bottom surface, a cabinet using the lifting device is installed immediately above a storage, a refrigerator, a wall, or the like, and the movable body in the storage cabinet is moved up and down. Can be used.

Further, since the guide groove 23, which is a sliding portion, is provided on the movable body 10 side, it is easy to directly check since it is lowered when pulled out, and it is easy to check for abnormalities such as wear. Also, maintenance work such as lubrication can be easily performed. Further, the pivot unit 25 installed 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, but the guide groove 23 is attached to the movable body 10. Therefore, only the pivot unit 25 needs to be attached to the cabinet 9, and a wider space can be used than when the guide groove 23 is attached to the cabinet 9.

Further, the engagement portion 24 is provided at a position other than on the pivot of the first arm 12, so that the movement of the movable body 10 is uniquely defined only by the relative relationship between the guide groove 23 and the engagement portion 24. can do. Further, by changing the position of the engaging portion 24, the degree of freedom in designing the guide groove 23 is increased, and the moving area of the movable body 10 can be increased. For example, the descending distance of the movable body can be increased within a limited range of turning of the arm.

Although the pivots 17 and 18 are integrated with the pivot unit and installed in the cabinet 9, it is not particularly necessary to use the pivot unit.

(Embodiment 2) FIG. 2 is a schematic view of a lifting apparatus according to Embodiment 2 of the present invention, in which the same components as those in Embodiment 1 shown in FIG.

In FIG. 2, the first arms 12, 13 and the second arms 14, 15 are connected via an intermediate connecting portion 26 and are pivotally supported by pivots 27, 28, 29, 30, respectively. The intermediate connecting portion 26 can also serve as the intermediate arm 16, and the intermediate arm 16 is not required. In addition, the supporting roller 31 is used as an auxiliary supporting means.
It is installed against the bottom of 0.

The operation and the operation are the same as those of the first embodiment. In addition to the operation of the first embodiment, by connecting the first arms 12 and 13 and the second arms 14 and 15 via the intermediate connecting portion 26, A first arm 12, 13, a second arm 14,
15 (arrangement between the arms of the two arms, etc.) can be arbitrarily changed. However, the length of each of the first and second arms cannot be changed. Depending on the range of the pivot angle of the arm necessary to obtain the prescribed trajectory, the parallel link 2
Although there is a possibility that the arms may collide with each other and become inoperable, shifting the position of the pivot on the intermediate connecting portion 26 can increase the pivotable range of the arms. Alternatively, it is possible to prevent the movement of the parallel link from having an inflection point. Further, when the arm is beyond the height of the cabinet 9 when the intermediate connecting portion 26 is not interposed, the position of the pivot is shifted by using the intermediate connecting portion 26 so that the inside of the cabinet 9 can be installed. Can be stored in

Further, the angle of the second arms 14, 15 when the movable body is stored is set to about 60 °, which is in the range of 0 ° to 90 ° from the front horizontal plane.
15 does not pass through the vertical position (90 °). Second
In a configuration in which the arms 14 and 15 pass through the vertical position (90 °), the movable body 10
When the specified position is shifted, the first arms 12 and 13 and the second arms 14 and 15 do not interlock in the second position near the vertical position.
In some cases, only the arms 14 and 15 make a revolving motion, significantly impairing the operability. However, this problem can be avoided and smooth operation can be performed.

When the support roller 31 is installed, the load applied to the arms 12 to 14 and the pivots can be reduced because the support roller 31 shares and supports the weight of the movable body 10 and the load. Etc. can be improved. Further, since the load applied to the guide groove 23 and the engaging portion 24 is reduced, the operation becomes smooth, and the movable body 10
Operability is improved. In addition, since the movable body 10 also serves to prevent the inclination of the movable body 10, the operation of the guide groove 23 and the engaging portion 24 is deteriorated by the inclination of the movable body 10.
0 can be prevented from becoming non-smooth. Also, as shown in FIG.
In the case where the movable body 10 is moved to a position distant from the axis line of the third movable member 3, the guide groove 23 is formed even when the movable body 10 follows the same movement locus.
Are different. Thereby, the shape of the guide groove 23 can be deformed, miniaturized, or a locus that cannot be moved when the guide groove 23 is installed on the axis.

(Embodiment 3) FIG. 3 shows an elevating device according to Embodiment 3 of the present invention, and the same reference numerals are given to the same components as those of Embodiment 2 shown in FIG.

In FIG. 3, a tilt correcting means 32 for correcting the tilt of the movable body 10 is provided. The tilt correcting means 32 exemplified here is an elastic body attached to the first arm 12.

The operation and the operation are the same as those of the second embodiment. However, even if supported by the support arm 11 which is configured to be substantially horizontal, the movable arm is movable due to the backlash of the pivot portion and the sliding portion. When the body 10 is tilted, the relative relationship between the guide groove 23 and the engaging portion 24 is shifted, and the operation may not be smooth. For example, in the housed state shown in FIG. 3, the movable body 10 tilts backward. The elastic body installed as the inclination correcting means 32 at the position shown in FIG. 3 of the first arm 12 is compressed between the two arms from a certain position by the turning of the first arm 12. As a result, a force acts between the arms and acts in a direction that slightly distorts the parallel link. By this action, the remarkable backward inclination of the movable body 10 at the time of storage is corrected, the movable body 10 can be kept substantially horizontal, and the operation of the movable body 10 can be performed smoothly.

(Embodiment 4) FIG. 4 is a principle diagram showing the operation of an embodiment 4 according to claim 7 of the present invention.

FIG. 6 is a diagram in which virtual arms 33 and 34 are connected so as to form parallel links with the first arms 12 and 13;
The tilt of the virtual arm 34 corresponds to the tilt of the movable body. E
Is a retracted position, and a position F is a pull-out position. For example, the length of the front arm 12 is increased by about 2 mm with respect to the first arm 13 having a length of 300 mm. However, the illustration is exaggerated.

The actual movable body tilts forward from a predetermined position due to the backlash of the pivot, the bending of the movable body or the weight of the load, or the like, but the virtual arm 34 always moves backward as shown in the figure. The movable body tilts forward for the above-described reason. Thus, the movable body at the time of pulling out can be kept substantially horizontal, and at the same time, it is possible to prevent the stored items from falling.

(Embodiment 5) FIG. 5 is a principle diagram showing the operation of an embodiment 5 according to claim 8 of the present invention.

FIG. 6 is a view in which virtual arms 33 and 34 are connected so as to form parallel links with the first arms 12 and 13;
The tilt of the virtual arm 34 corresponds to the tilt of the movable body. E
Is a retracted position, and a position F is a retracted position. The length of the virtual arm 34 is shorter than the length of the virtual arm 33 so as to slightly break the parallel link configuration. For example, the first arms 12 and 13 having a length of 300 mm and a length of 100 mm
Length of the virtual arm 34 for the virtual arm 33 of
mm. However, the illustration is exaggerated. Actually, the length of the intermediate arm may be shortened, or the distance between the pivots 27 and 28 may be shortened when an intermediate connecting portion is used.

As shown in the figure, the virtual arm 34 (movable body) acts to tilt forward in the housed state E and to tilt backward in the pulled-out state F. Further, in an actual apparatus, the movable body is displaced from a predetermined position due to the backlash of the pivot or the bending of the movable body or the member due to the weight of the load. Since the arms 12 and 13 have different inclination directions, they tilt backward when stored and tilt forward when pulled out. Therefore, the virtual arm 34 is slightly shortened, so that the movable body at the time of storage can be tilted backward and pulled out. Can be corrected. This prevents the movable body from tilting forward when the drawer is pulled out, and prevents the loaded object from falling down.
Further, the movable body can be prevented from contacting the housing due to the inclination. In addition, it is possible to prevent the relative position between the guide groove and the engaging portion from being shifted due to the inclination of the movable body, thereby preventing the operability from being deteriorated.

(Embodiment 6) FIG. 6 is a schematic view of a lifting apparatus according to Embodiment 6 of the present invention, in which the same components as those in Embodiment 2 shown in FIG.

In the pivot unit 25 shown in FIG.
A spring 36 is attached to the mounting member 35 which rotates in conjunction with the arm 13.
Is installed.

The spring 36 acts on the movement of the movable body 10, and applies a spring force to the turning of the first arm 13 here. Example 2 of operation and action
However, if the movable body 10 is pulled out, the spring force acts, and the impact when the movable body 10 completes descending can be reduced, and the durability and safety of the apparatus can be improved.
Further, since the spring 36 acts in a direction to assist the force when the movable body 10 is pushed back, the movable body 10 can be easily pushed back into the cabinet 9.

It is not necessary to apply a spring force over the entire moving range of the movable body 10, and it is possible to apply a spring within an arbitrary range, for example, after the movable body 10 starts descending. Good.

If the spring force is always applied even when the movable body 10 is stored, the movable body 10 can be prevented from popping out.

In the sixth embodiment, a shock absorber 37 having resistance to the rotation of the first arm 12 is installed in the mounting member 35 which rotates in conjunction with the first arm 13 in the pivot unit 25. I have. If the movable body 10 is moved and the first arm 12 is turned, the buffer device 37 is prevented from turning.
Of the movable body 10 can be reduced even when the movable body 10 is completely lowered without the spring 36.
Safety can be improved.

It is not necessary to apply the buffering force over the entire moving range of the movable body 10, and it is possible to operate the buffering device within an arbitrary range, for example, after the movable body starts descending. Good.

The shock absorber 37 may be configured to have resistance only to movement in the direction in which the movable body 10 is pulled out. Also in this case, if the movable body 10 is moved and the first arm 12 rotates, the resistance of the shock absorber 37 acts on the rotation, and the movable body 1 can be moved without the spring 36.
The impact at the completion of the descent of 0 can be reduced, and the durability and safety of the device can be improved. The movable body 1
When the 0 is pushed back, there is no resistance, so the shock absorber 37
Can be returned with the same force as when not installed.

It is not necessary to apply a buffering force over the entire moving range of the movable body 10, and it is possible to operate the buffering device within an arbitrary range, for example, after the movable body starts descending. Good.

(Embodiment 7) FIG. 7 is a schematic view of an elevating device according to Embodiment 7 of the present invention. The same reference numerals are given to the same components as those in Embodiment 2 shown in FIG.

In FIG. 7, a covering plate 38 is provided to cover the periphery of the connection between the first arm 12, 13 and the second arm 14, 15 or the connection with the intermediate connection.

The cover plate 38 can prevent foreign substances and the like from entering the above-mentioned portions, suppress operation failures, and obtain a preferable appearance because the intersecting members are hidden.

(Embodiment 8) FIGS. 8 (a) and 8 (b) show an elevating device according to an eighth embodiment of the present invention, wherein the same components as those of the embodiment 2 shown in FIG. I have.

In the eighth embodiment, the supporting arms 11 are provided on both left and right sides of the movable body 10, and the connecting pipe 39 is used as a connecting means 39 for interlocking the movement of the supporting arms 11.
It is installed near the pivot 17 of the arm.

The operation and operation are the same as those of the second embodiment. However, in addition to the operation of the second embodiment, since the movements of the left and right first arms 11 are synchronized, the left and right arms are not twisted and the movable body 10 Can be performed smoothly.

(Embodiment 9) FIG. 9 is a schematic diagram of a lifting unit according to Embodiment 9 of the present invention.

The configuration is different from that of the cabinet of the first embodiment. If the pivot unit is mounted on an existing wall or cabinet, the same operation and action as in the first embodiment can be performed.

Although the pivot portion is integrated as a pivot unit, it is not necessary to particularly integrate the pivot portion, and the pivots 17 and
It is sufficient that 18 is in a state that can be attached to the cabinet.

[0065]

As described above, according to the present invention, since the guide portion is provided on the movable portion, the guide portion is located below when descending, so that maintenance work can be easily performed. Since only the pivot is attached to the cabinet, there is an advantageous effect that the area around the pivot can be effectively used for installing a spring, a shock absorber, and the like. Further, since the movable body can take any trajectory within a possible range, the movable body supported in the housing having the bottom surface can be moved up and down. Further, by providing the engaging portion on the first arm, the movement of the movable body can be uniquely defined only by the relative relationship between the guide portion and the engaging portion, and the moving area of the movable body increases. be able to.

When the first arm and the second arm each have a parallel link configuration, the movable body can be kept substantially horizontal, and can be used for storage equipment and the like.

When the first arm and the second arm are connected via an intermediate connecting portion, the shape of the parallel link formed by each of the first arm and the second arm can be arbitrarily changed. The turnable range can be increased. In addition, even if the arm exceeds the height of the housing without passing through the intermediate connecting portion, the arm can be accommodated in the housing by displacing the position of the pivot by using the intermediate connecting portion. .

When the angle of the second arm at the time of storing the movable body is within the range of 0 ° to 90 ° from the front horizontal plane, the specified position of the movable body is shifted due to rattling of the pivot portion or the like. Even so, operability is prevented from being significantly impaired.

The guide portions such as the guide grooves are made of resin.
In addition, when the contact between the guide portion and the engaging portion is a rolling contact, wear and breakage of the guide portion can be prevented, and the smoothness of operation can be improved.

Further, the support arm is configured to keep the movable body substantially horizontal, and in the case of a tilt correcting means for correcting the tilt of the movable body, the guide section and the engaging section are formed by tilting the movable body. Are prevented from deviating from each other and the operation is not smooth.

Further, when the front arm of the two first arms having the parallel link configuration is lengthened, it is possible to correct that the movable body tilts forward when the movable body is pulled out.

When the distance between the axes of the first arm having the parallel link structure connected to the second arm is shorter than the distance between the axes of the first arm that is pivotally supported by the housing, the first arm is affected. The movable body can be prevented from tilting forward when the movable body is pulled out, and the movable body can be prevented from tilting backward when the movable body is stored, and guided by the tilt of the movable body. It is possible to prevent the relative position between the part and the engaging part from being shifted and the operability from being deteriorated.

Further, when the auxiliary supporting means for supporting the movable body is provided, the load on the arm and the pivot can be reduced.
Durability and the like can be improved. Furthermore, since the load applied to the guide portion and the engaging portion is reduced, the operation of the engaging portion is smooth, and the operability of the movable body can be improved. It is also effective in preventing the movable body from tilting.

When the shaft of the engaging portion is installed at a position away from the driving axis on the first arm, the shape of the guide portion is deformed or downsized. An impossible trajectory can be taken.

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.

Further, in the case where a shock absorber 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, in the case where 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 when the movable body is completely lowered. 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.

In the case where a covering means is provided for covering the periphery of the connecting portion between the first arm and the second arm, the first arm and the second
Prevents foreign matter from entering into the part where the arms intersect or where each arm intersects with the intermediate connecting plate or the pivot part,
Operational defects can be suppressed, and a favorable appearance can be obtained.

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

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a lifting device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a lifting device according to a second embodiment of the present invention.

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

FIG. 4 is a principle diagram illustrating an operation of a lifting device according to a fourth embodiment of the present invention.

FIG. 5 is a principle diagram showing an operation of a lifting device according to a fifth embodiment of the present invention.

FIG. 6 is a schematic diagram of a lifting device according to a sixth embodiment of the present invention.

FIG. 7 is a schematic diagram of a lifting / lowering unit according to a seventh embodiment of the present invention.

FIG. 8A is a schematic view of a lifting / lowering device according to the eighth embodiment of the present invention, and FIG.

FIG. 9 is a schematic diagram of a lifting unit according to a ninth embodiment of the present invention.

FIG. 10 is a schematic diagram of a conventional lifting device.

[Explanation of symbols]

Reference Signs List 9 cabinet (housing) 10 movable body 11 support arm 12, 13 first arm 14, 15 second arm 16 intermediate arm 17, 18, 19, 20, 21, 22, 27, 28, 2
9, 30 Axis 23 Guide groove (guide part) 24 Engagement part 25 Axis unit 26 Intermediate connection part 31 Support roller 32 Inclination correction means 34 Virtual arm 35 Attachment member 36 Spring 37 Buffer device 38 Cover plate 39 Connection means

Claims (18)

[Claims] 1. A housing, a movable body provided so as to be able to enter and exit the housing, and a support arm formed by pivotally pivoting one end of each of a first arm and a second arm. , The first
The other end of the arm is provided in the housing, the other end of the second arm is pivotally supported by the movable body, and a guide portion for regulating the movement locus of the movable body is provided on the movable body side. An elevating device in which an engaging portion movable along the guide portion is installed on the first arm. 2. A housing, a movable body provided in and out of the housing, and a support arm formed by pivotally supporting one end of each of a first arm and a second arm so as to be pivotable. , The first
The other end of the arm is pivotally supported by the housing, the other end of the second arm is pivotally supported by the movable body, the first arm and the second arm are each configured as a parallel link, and the movable body is And a guide section for regulating the movement locus of the movable body is provided on the movable body side, and an engaging section movable along the guide section is provided on the first arm. 3. The lifting device according to claim 1, wherein the first arm and the second arm are connected via an intermediate connecting portion. 4. The lifting device according to claim 1, wherein the angle of the second arm when the movable body is stored is in a range of 0 ° to 90 ° from the front horizontal plane. 5. The lifting device according to claim 1, wherein the guide portion is made of resin, and the contact between the guide portion and the engaging portion is a rolling contact. 6. The lifting device according to claim 1, further comprising an inclination correcting means for correcting an inclination of the movable body. 7. The apparatus according to claim 2, wherein the front arm of the two first arms having a parallel link configuration is lengthened to correct the movable body from tilting forward when the movable body is pulled out. 7. The elevating device according to any one of claims 6 to 6. 8. The distance between the pivots connected to the second arm among the pivots of the first arm having the parallel link structure is shorter than the distance between the pivots supported on the housing.
The lifting device according to any one of claims 1 to 6. 9. The lifting device according to claim 1, further comprising an auxiliary supporting means for supporting the movable body. 10. The lifting device according to claim 9, wherein the auxiliary support means is a support roller installed on the bottom of the movable body. 11. The elevating device according to claim 1, wherein the shaft of the engaging portion is installed at a position away from the driving axis on the first arm. 12. The lifting device according to claim 1, further comprising a spring acting on the movement of the movable body. 13. The lifting device according to claim 1, further comprising a buffer device having resistance to the movement of the movable body. 14. 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. 15. A device according to claim 1, further comprising a covering means for covering a periphery of a connecting portion between the first arm and the second arm.
Item. 16. The lifting device according to claim 1, wherein the supporting arms are provided on opposing surfaces of the movable body, respectively, and a connecting means for interlocking the movement of the supporting arms is provided. 17. A movable body, a support arm formed by pivotally supporting one end of each of a first arm and a second arm to each other, a guide portion provided on the movable body, and this guide portion. And an engaging portion provided at an appropriate position on the support arm, the other end of the first arm pivotally supported by a movable body, and the other end of the second arm is An elevating unit that can be pivotally supported on a housing that supports a movable object. 18. The lifting unit according to claim 17, wherein the first arm and the second arm each have a parallel link configuration.