JP2002034691A - Supporting device for furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the safety of a supporting device for furniture which can be used for a partitioning furniture placed to intercept a space between the floor and the ceiling. SOLUTION: The supporting device for furniture is provided with a grounding part 2 for installing, which moves up and down between the highest and the lowest positions with respect to the grounding level of wheels 5A, 5B, 6 for moving, and a means 4 for driving to move up and down the grounding part 2 for installing. At least, a wheel 6 for moving among the wheels 5A, 5B, 6 is placed at the end of a movable frame 7, which can be pulled forward from a main body of the furniture. When the grounding part 2 for installing locates higher than the grounding level of wheels 5A, 5B, 6, the supporting device for furniture has a function that the wheels 5A, 5B, 6 support the main body of the furniture as the furniture can move on a floor 54. Only when the movable frame 7 is pulled out from a stored position X, found on the bottom of the main body of the furniture, to a pulled out position, an interlocking means 47 activates the means 4 for driving to move up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furniture support device which can be used for partition furniture installed so as to block a space between a floor and a ceiling.

[0002]

2. Description of the Related Art Partition furniture of this type has an upper end in contact with or close to a ceiling surface, so if the height of the partition furniture is determined in accordance with the ceiling height at the partition furniture installation position, It is practically impossible to carry in and install the furniture. Therefore, the grounding body for mounting (wheel)
The furniture body is supported so that it can move up and down, and on the bottom of the furniture body,
When the installation grounding body is on the floor, a moving wheel floating above the floor surface is attached, and the installation grounding body is raised with respect to the furniture body to a position above the grounding level of the moving wheel. As a result, a furniture supporting device has been conceived in which the upper end of the furniture body is lowered, and at the same time, the moving wheels land on the floor instead of the grounding member for installation.

However, partition furniture of this kind is:
Since it is normal to configure the thickness in the front-back depth direction to be thin, when the furniture is carried in and installed, or when the moving wheel is to be moved on the floor surface for changing the installation position, Furniture is easy to fall down and cannot be safely moved.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a furniture supporting apparatus which can solve the above-mentioned conventional problems. When the reference numeral is attached, the bottom of the furniture body provided with at least three moving wheels 5A, 5B, 6 on the bottom,
An installation grounding body 2 that can be raised and lowered between an upper position and a lower position with respect to the ground level of the moving wheels 5A, 5B, 6
And a lifting / lowering drive means 4 for the installation grounding body 2. At least one of the moving wheels 5A, 5B, 6 is movable with respect to the furniture body. 7, when the mounting ground 2 is in a position above the ground level of the moving wheels 5A, 5B, 6, the moving wheels 5A, 5B,
6 is a furniture support device configured so that the furniture body is movably supported on the floor surface 54 when the movable frame 7 is pulled out from the storage position X at the bottom of the furniture body to the draw-out position Y. Only the interlock means 47 for activating the elevation drive means 4 is provided.

[0005] When the furniture supporting apparatus of the present invention having the above-described structure is embodied, specifically, the lifting / lowering drive means 4 includes a jack 11 for raising / lowering the grounding body 2 for installation with respect to the bottom plate 1 of the furniture main body, and a jack 11 for installation. The grounding body 2 is composed of a link mechanism 12 that allows only the parallel up and down movement with respect to the furniture main body bottom plate 1, and the interlock means 47 includes the furniture main body bottom plate 1.
The movable frame 48 is provided so as to be switchable between a restraining position P1 for preventing the movement of the link mechanism 12 when the mounting grounding body 2 is raised with respect to the retracting position P2 and a retracting position P2 for allowing the movement of the link mechanism 12. When the movable stopper 48 is pulled out from the storage position X at the bottom of the furniture main body to the pull-out position Y, the movable stopper 48 can be switched from the stop position P1 to the retracted position P2.

[0006] In this case, the movable frame 7 is horizontally pivotally supported between a storage position X along the left-right length direction of the furniture main body and a pull-out position Y protruding forward from the furniture main body at a substantially right angle. The movable stopper 48 is formed at the inner end of the movable frame 7 so that the movable frame 7 can also serve as the interlock means 47.

[0007] The lifting drive means 4 comprises a jack 11 for raising and lowering the installation grounding body 2 with respect to the furniture body bottom plate 1.
In the case where the interlock means 60 is provided, the interlock means 60 has a stop position P1 for preventing the rotation of the rotary drive shaft (the screw shaft 14) of the jack 11 and a retreat position P2 for allowing the rotation of the rotary drive shaft (the screw shaft 14). A movable stopper 62 that can be switched is provided, and the movable frame 7 is moved to the storage position X at the bottom of the furniture body.
The movable stopper 62 can be switched from the restraining position P1 to the retracted position P2 when the movable stopper 62 is pulled out from the retracted position Y.

In this case, the movable stopper 62 is supported so as to be able to move back and forth with respect to the rotation trajectory of the projection 61 projecting from the rotary drive shaft (screw shaft 14) of the jack 11, and the movable stopper 62 and the movable frame 7 are supported. Can be linked by the linking means 63.

Further, a storage portion 46 for the rotation operation handle 17 of the jack 11 can be provided in a portion of the movable frame 7 at the draw-out position Y which projects forward from the furniture main body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
Is a furniture body bottom plate consisting of a horizontally long rectangular plate that is long in the left and right direction,
Reference numeral 2 denotes an installation grounding body made of a horizontally-long rectangular plate slightly smaller than the furniture main body bottom plate 1, reference numeral 3 denotes a pedestal for closing the periphery between the furniture main body bottom plate 1 and the installation grounding body 2, and reference numeral 4 denotes elevation driving means. Reference numerals 5A and 5B denote moving wheels having fixed positions, 6 denotes a movable wheel that can be pulled out, and 7 denotes a movable frame that supports the moving wheels 5. Each of the moving wheels 5A, 5B, 6 is a free wheel (caster) rotatable around a vertical axis.

The undercarriage 3 is provided with an outer frame plate 8 fixedly projected downward from the left and right sides and the rear side in the longitudinal direction of the furniture body bottom plate 1.
a to 8c, and inner frame plates 9a to 9c fixedly projecting upward from the left and right sides and the rear side in the length direction of the installation grounding body 2 so as to be located inside the outer frame plates 8a to 8c. , And a detachable front frame plate 10.
Is used to block the space between the furniture body bottom plate 1 and the installation grounding body 2 when the installation grounding body 2 is at the lowermost level with respect to the furniture body bottom plate 1. It is detachably attached to the front sides of the frame plates 8a and 8b with screws or the like. In addition, the outer frame plates 8a to 8c of the undercarriage 3
Is configured to be higher than the ground level of the moving wheels 5A, 5B, 6.

The lifting / lowering drive means 4 comprises a jack 11 and a link mechanism 12. The jack 11 is a vertical shaft whose upper end is supported by a bearing 13 fixed to the bottom of the furniture main body bottom plate 1 so that it can only rotate. A screw shaft 14 and a female screw body 15 fixed to the upper side of the installation grounding body 2 and through which the screw shaft 14 is screwed and penetrated. An opening provided in the furniture body bottom plate 1 is provided at the upper end of the screw shaft 14. A rotary operation angular shaft portion 14a protruding into the rotary shaft 16 is provided.
A rotation operation handle 17 having a box wrench portion 17a which can be detachably fitted to the handle is prepared.

The link mechanism 12 is for maintaining the furniture main body bottom plate 1 and the installation grounding body 2 which are moved relatively close to and away from each other by the jack 11 in a posture parallel to each other. Foldable links 18 and 20 for connecting the furniture main body bottom plate 1 and the installation grounding body 2 at positions adjacent to the furniture main body bottom plate 1 and the furniture main body bottom plate 1
Folding links 19 and 21 connecting the mounting grounding body 2 to the installation grounding body 2 at both left and right length directions, and the jack 1
1 and 2 are interlocking rods 22 and 23 that interlock and link two intermediate folding double links 18, 19 and 20, 21 which are on the same side and bend in the same direction.

Each of the two half-folded links 18 to 21 is composed of two pairs of upper and lower link units 24a and 24b which are connected to each other by a support shaft 25 so as to be freely bendable, and are arranged side by side in the front-rear direction (width direction). Each upper link unit 24a is the furniture body bottom plate 1
The lower link unit 24b is pivotally attached to the bottom of the
Is pivotally mounted on the upper side of the grounding member 2 for installation by a support shaft 27. Thus, the respective support shafts 25 to 27 of the two front and rear link units 24a and 24b are constituted by a common shaft,
Numerals 2 and 23 are pivotally connected to a common support shaft 25 connecting the link units 24a and 24b between the front and rear two link units 24a and 24b. One side with rods 20 and 21 (rods 22 and 2
The upper and lower two parallelogram links which share 3) are formed.

The fixed moving wheels 5A, 5B are mounted on the bottom of the furniture body bottom plate 1 at positions near the rear sides near both ends in the longitudinal direction, and idle around the vertical axes 5a, 5b. At this time, notch openings 28 and 29 are provided in the rear inner frame plate 9c and the rear outer frame plate 8c so that a part of the wheel can protrude to the outside of the base wheel 3, and the installation grounding body 2 is provided in the mounting grounding body 2. The notch openings 28 and 29 are provided so that the moving wheels 5A and 5B can protrude below the installation grounding body 2 when the furniture body bottom plate 1 and the installation grounding body 2 move closer to each other. Notch opening 30 communicating with
31 are provided.

The movable wheel 6 which can be pulled out is mounted below the free end of the movable frame 7. The movable frame 7 has a base portion at a substantially central position in the longitudinal direction of the furniture main body bottom plate 1 and a bottom portion closer to the front side by a vertical support shaft 32.
A storage position X (shown by a solid line in FIG. 1) along the length direction of the furniture main body bottom plate 1 below the furniture main body bottom plate 1 and a drawer position Y (FIG. 1) protruding forward from the furniture main body bottom plate 1 at right angles.
(Shown by phantom lines in FIG. 2).

Angle members 33a, 33b are fixed to the bottom of the furniture main body bottom plate 1 along the front and rear sides, and the angle members 34a, 34b are provided above the installation grounding body 2 along the front and rear sides. Are fixed, and both front and rear ends of the upper end support shaft 26 of each upper link unit 24a that constitutes each of the middle folded links 18 to 21 of the link mechanism 12 are supported by angle members 33a and 33b on the furniture body bottom plate 1 side, Both front and rear ends of the lower end support shaft 27 of each lower link unit 24b are supported by angle members 34a, 34b on the installation grounding body 2 side. The bearing 13 of the jack 11 is fixed to the inside of a longitudinal groove 35 provided between the angle members 33a and 33b on the furniture body bottom plate 1 side, and the female screw body 15 is fixed to the angle of the installation grounding body 2 side. It is fixed on the upper side of the front-rear channel member 36 provided between the members 34a and 34b. Furthermore,
Moving wheels 5 fixed to the bottom of the furniture body bottom plate 1
A and 5B are angle members 3 on the rear side of the bottom of the furniture body bottom plate 1.
3b is attached to the lower side of the supporting frames 37, 38 fixed to the lower side.

Reference numeral 39 denotes a position at which the movable frame 7 is pulled out.
This is a locking means which is locked by a movable locking piece 40 mounted on the movable frame 7 and a fixed locking piece 41 on the furniture body bottom plate 1 side. As shown in FIGS. 9 and 10, the movable locking piece 40 is made of an angle material, and protrudes from the side surface of the movable frame 7 and passes through a long hole 43 a provided in the movable locking piece 40. And movable locking piece 4
A pin 42b protruding from the side surface of the movable frame 7 and penetrating through an elongated hole 43b provided on the side surface of the movable frame 7 allows the movable frame 7 to move in the longitudinal direction within a certain range. And the locking portion 44 formed at the tip of the vertical plate portion is in the locking action position (projection limit position).
A tension coil spring 45 is hung between the two pins 42a and 42b so as to be held at the same position.

The movable frame 7 is made of a channel material that is open at the upper side, and the entire portion protruding forward from the furniture main body bottom plate 1 when the movable frame 7 is pulled out to a pull-out position Y indicated by a virtual line in FIG. Is a square dish-shaped handle storage section 46
Is configured. The handle storage section 46 is a jack 1
The first rotation operation handle 17 is housed therein. The movable frame 7 also serves as an interlock means 47 that enables the elevation drive means 4 only when the movable frame 7 is pulled out from the storage position X at the bottom of the furniture main body to the extraction position Y. .

That is, the interlock means 47 includes a movable stopper 48 formed at the inner end of the movable frame 7 as shown in FIGS. When the movable frame 7 is at the storage position X, the movable stopper 48 (the inner end of the movable frame 7) is connected to the rod 23 of the half-folded double link 20 in the link mechanism 12 of the lifting drive unit 4.
At the stop position P1, which is adjacent to the bent-out side of the double-folded double link 20 when the grounding member 2 for installation rises with respect to the bottom plate 1 of the furniture main body. In this state, the grounding member 2 for installation cannot rise with respect to the bottom plate 1 of the furniture main body because the bending of the bending member 20 is prevented. When the movable frame 7 rotates to the extraction position Y, the movable stopper 48 (the inner end of the movable frame 7) switches to the retracted position P2,
In this state, the grounding member for installation 2 can rise with respect to the bottom plate 1 of the furniture main body.

The fixed locking piece 41 is provided on a bracket 52 that receives the inner end 7a of the movable frame 7 in a state where the movable frame 7 is pulled out to the drawing position Y. This bracket 52
Is fixed to a substrate 53 to which the upper end of a vertical support shaft 32 for supporting the movable frame 7 is fixedly mounted between the angle members 33a and 33b on the furniture body bottom plate 1 side. Horizontal support plate 52a for supporting 7a
And a vertical restraint plate portion 52b that abuts against the side surface of the inner end 7a of the movable frame 7 to prevent the movable frame 7 from swinging beyond the extraction position Y.
The front end of 2b also serves as the fixed locking piece 41.

As shown in FIGS. 2, 5 and 7, the jack 11 can be provided with an up-and-down limit stopper 55. The raising / lowering limit stopper 55 includes a radially projecting piece 56 a of a plate 56 fixed to the lower end of the screw shaft 14,
A stopper plate 57 fixed in the front-rear direction channel member 36;
The projecting piece 56 that moves up and down while rotating in accordance with the forward and reverse rotations of 4
Stopper surfaces 58a, 58b are formed so as to abut on the upper and lower ends of the ascending / descending stroke so as to stop the rotation. According to the stopper 55 for ascending and descending, at the ascending and descending limits of the grounding member for installation 2 with respect to the bottom plate 1 of the furniture main body, the rotation of the screw shaft 14 causes the protruding piece 56 a of the screw shaft 14 and the stopper plate 57 side to rotate. The contact is reliably prevented by the contact of the stopper surface 58a with the screw shaft in the rotational direction.

Furniture provided with a furniture supporting device having the above-mentioned structure,
For example, the method of use and operation of the partition furniture will be described. In a state where the partition furniture is installed at a predetermined position on the floor surface 54 as shown in FIGS. Furniture body bottom plate 1
(Furniture body) is in a state of being lifted to the ascent limit level. In other words, the installation grounding body 2 is in a state where it is lowered with respect to the furniture body bottom plate 1 to a lower limit level lower than the grounding level of the moving wheels 5A, 5B, 6 and each moving wheel 5A. , 5B, 6 are above the grounding member 2 for installation, and are floating above the floor surface 54. At this time, the front frame plate 10 of the pedestal 3 is attached at a predetermined position, and the periphery of the space between the furniture main body bottom plate 1 and the installation grounding body 2 is surrounded by a base including the attached front frame plate 10. Wheel 3
Is closed by When the partition furniture is installed with the rear side surface of the base wheel 3 (the outer side surface of the rear outer frame plate 8c) abutting or approaching the wall of the room or the like, a pair of rear left and right fixed moving wheels 5A, Even if 5B protrudes rearward from notch openings 28, 29, the moving wheels 5A, 5B rotate around the vertical shafts 5a, 5b due to contact with the wall or the like, and the rear surface of the base wheel 3 (The outer surface of the rear outer frame plate 8c).

As shown in FIGS. 1 and 9, a handle 17 for operating the jack 11 of the lifting / lowering drive means 4 is housed in a handle housing portion 46 of the movable frame 7 supporting the moving wheels 6. , The movable frame 7 is shown in FIG.
At a storage position X indicated by a solid line in FIG. In this state, as shown in FIGS. 1 and 2, the movable stopper 48 of the interlock means 47 (movable frame 7) is at the stop position P1 because the movable frame 7 is at the storage position X, and 4 (bending motion of the double link 20).

When moving the furniture, the front frame plate 10 of the pedestal 3 is removed, and the movable frame 7 at the storage position X is rotated around the vertical support shaft 32 and pulled out toward the user. As shown by, the position is switched to the pull-out position Y that projects substantially perpendicularly forward from the furniture main body bottom plate 1. In this state, the moving wheels 6 supported by the movable frame 7
As shown in FIG. 6, it is floating from the floor surface 54.

When the movable frame 7 reaches the pull-out position Y as shown in FIG. 10, its inner end 7a rides on the horizontal support plate 52a of the bracket 52, and
The side surface of the inner end 7a abuts on the vertical restraint plate 52b of the bracket 52. At this time, the movable locking piece 40 of the locking means 39 once retreats against the spring 45 and then returns by the urging force of the spring 45, and the locking portion 44 at the tip thereof vertically restrains the bracket 52. The fixed locking piece 41 is engaged between the plate portion 52 b, that is, the outside of the fixed locking piece 41, and is sandwiched between the inner end side surface of the movable frame 7 and the locking portion 44 at the tip of the movable locking piece 40. It will be in the locked state. That is, the locking means 39 prevents the movable frame 7 from rotating from the pull-out position Y to the storage position X.

When the movable frame 7 is switched to the pull-out position Y as described above, the movable stopper 48 of the interlock means 47 (the movable frame 7) is also switched from the restraining position P1 to the retracted position P2.
Can be operated (the center-folded double link 20 can bend). On the other hand, since the handle storage portion 46 of the movable frame 7 at the drawer position Y is projected forward from the partition furniture (furniture main body bottom plate 1), the handle 17 can be taken out from the handle storage portion 46. Therefore, as shown by the imaginary line in FIG. 5, the handle 17 taken out of the handle storage portion 46 of the movable frame 7 is moved to the box wrench portion 17a by the lifting drive means 4.
The jack 11 is set so as to be fitted to the rotating shaft portion 14 a of the jack 11, and the screw shaft 14 is rotated in the screwing direction with respect to the female screw body 15 via the handle 17.

By the rotation of the screw shaft 14 in the screwing direction, the furniture main body bottom plate 1 is pulled up via the female screw member 15.
In other words, the furniture main body bottom plate 1 (furniture main body) falls with respect to the installation grounding body 2 on the floor surface 54. At this time, the upper and lower two parallelogrammatic links formed by the middle folding double links 18 to 21 and the interlocking rods 22 and 23 constituting the link mechanism 12 of the lifting / lowering driving means 4 have a common side. Since the main body bottom plate 1 and the installation grounding body 2 are always kept in a posture parallel to each other, the furniture main body bottom plate 1 descends parallel to the installation grounding body 2 (floor surface 54). With the relative parallel approaching movement of the furniture main body bottom plate 1 and the installation grounding body 2, each of the two half-fold links 18 to 21 of the link mechanism 12 bends in parallel via the rods 22 and 23.

When the furniture main body bottom plate 1 is lowered, the moving wheels 5A, 5B, 6 on the furniture main body bottom plate 1 side are integrally lowered, and the moving wheels 5A, 5B are notched openings of the installation grounding body 2. The moving wheels 6 at the lower end of the movable frame 7 abut directly on the floor surface 54 while being in contact with the floor surface 54 via the 30 and 31. Further, when the screw shaft 14 of the jack 11 is continuously rotated by the handle 17, the furniture main body bottom plate 1 is moved to the floor surface 54 via the moving wheels 5A, 5B, 6 respectively.
Since it is supported above and cannot be further lowered, the grounding member for installation 2 is pulled up by the jack 11, and as shown in FIG. 7 and FIG.
It rises above the ground level of B, 6 and rises from the floor surface 54. That is, by raising the grounding body 2 for installation to the furniture body bottom plate 1 to the ascending limit position,
The furniture body supported by the furniture body bottom plate 1 is movably supported on the floor surface 54 via the moving wheels 5A, 5B, 6. Of course, the lower ends of the outer frame plates 8a to 8c on the furniture body bottom plate 1 side of the trolley 3 are in a state of floating from the floor surface 54.

As described above, the furniture main body on the furniture main body bottom plate 1 is moved by the two moving wheels 5A and 5B near the both ends in the longitudinal direction and the furniture main body at substantially the center position in the longitudinal direction. 3 with the moving wheels 6 at positions protruding forward
If the furniture is supported by points, the furniture body can be stably moved on the floor surface 47 by using the moving wheels 5A, 5B, 6. At this time, the pair of rear right and left moving wheels 5A, 5B, which are fixed in position, rotate around the vertical axes 5a, 5b when the furniture is pulled out to the front, and FIG.
As shown in the figure, the rear wheel frame 8c can protrude rearward from the rear outer frame plate 8c through the cutout openings 28, 29, so that both the moving wheels 5A, 5B and the center of gravity of the furniture main body (in the depth direction). (Substantially the center position), the distance in the front-rear direction can be increased, and the vehicle can be moved stably.

When the installation position of the furniture main body is determined, the screw shaft 14 is rotated via the handle 17 in the returning direction with respect to the female screw body 15, and the mounting grounding body 2 is moved via the female screw body 15 to the moving wheel 5A. , 5B, 6 below the ground level, that is, up to the lower limit level, the furniture body bottom plate 1
To lower. As a result, after the installation grounding body 2 matches the grounding level of the moving wheels 5A, 5B and 6,
The installation grounding body 2 comes into contact with the floor surface 54, and the moving wheels 5A, 5B, 6 float from the floor surface 54, and the furniture body is stably installed by the installation grounding body 2.
Also, after the installation grounding body 2 comes into contact with the floor surface 54,
As a result of the entire furniture body bottom plate 1 side (furniture body) being lifted by the jack 11, the upper end level of the furniture body rises and can be brought into contact with or close to the ceiling surface. Of course, when the furniture main body bottom plate 1 (furniture main body) rises with respect to the installation grounding body 2, similarly to when the furniture main body bottom plate 1 (furniture main body) descends with respect to the installation grounding body 2,
Since the furniture main body bottom plate 1 and the installation grounding body 2 are always held in a posture parallel to each other by the link mechanism 12 of the lifting drive means 4, the furniture main body bottom plate 1 is attached to the installation grounding body 2
(Floor surface 54). At this time,
Each of the two half-fold links 18 to 21 of the link mechanism 12 extends in parallel via the rods 22 and 23.

After the furniture body has been installed in a predetermined position,
The handle 17 is removed from the jack 11, and the handle 17 is stored in the handle storage section 46 of the movable frame 7 in a predetermined direction. Thereafter, the movable locking piece 40 of the locking means 39 is manually pulled toward the front against the spring 45, and the locking portion 44 at the tip thereof is fixed to the fixed locking piece 4 on the bracket 52 side.
1 (vertical restraint plate 52b) to release the lock of the movable frame 7 at the pull-out position Y. In this state, the movable frame 7 is moved to the storage position X around the vertical support shaft 32.
The movable frame 7 is entirely moved between the furniture main body bottom plate 1 and the installation grounding body 2. Then, the front frame plate 10 of the base wheel 3 is attached, and the furniture body bottom plate 1 is attached.
By completely closing the periphery of the space between the furniture and the installation grounding body 2 with the pedestal 3, the installation work of the furniture body is completed.

When the movable frame 7 returns to the storage position X, the movable stopper 48 of the interlock means 47 is moved.
(The inner end of the movable frame 7) returns from the retracted position P2 to the restraining position P1, and is adjacent to the bent protruding side of the half-folded double link 20 in the extended state of the link mechanism 12, and is connected to the half-folded double link. A state in which the bending motion of 20 is prevented is achieved. In other words, when the movable frame 7 is in the storage position X and the moving wheels 6 are not pulled out from the bottom of the furniture main body, the elevation drive means 4 is operated to ground the furniture main body bottom plate 1 for installation. Raise the body 2 and move each wheel 5
A, 5B, 6 cannot be grounded. Of course, the handle 17 for operating the jack 11 of the lifting drive means 4 is
Handle storage section 46 of movable frame 7 in storage position X
The jack 11 cannot be operated using the handle 17, but the jack 11 is operated using another handle, and each of the moving wheels 5.
A, 5B and 6 cannot be grounded.

As shown in FIGS. 1 and 6, the front angle member 33a attached to the furniture body bottom plate 1 and the front angle member 34a attached to the installation grounding body 2 are used to move the movable frame 7 in and out. A portion that overlaps with the moving path of the moving wheels 6 when the frame 7 is taken in and out is cut out. The furniture main body bottom plate 1 is a bottom plate of the furniture main body itself. However, the furniture main body bottom plate 1 may be configured such that a furniture main body having a bottom plate is mounted on the plate shown as the furniture main body bottom plate 1.

The structure of the link mechanism 12 is merely an example, and can maintain the furniture main body bottom plate 1 and the installation grounding body 2 which can be moved relatively close to and away from each other by the jack 11 in a posture parallel to each other. Any configuration may be used. Further, a plurality of jacks 11 are arranged (for example, at four corners) between the bottom plate 1 of the furniture main body and the grounding body 2 for installation, and the plurality of jacks are linked and connected so as to be synchronized with a chain or a gear by a linked shaft or the like. Become,
Elevating drive means that does not require a link mechanism can also be used.

The structure of the lifting drive means 4 is not limited to the above embodiment. Also, when the lifting / lowering drive unit 4 composed of a combination of the jack 11 and the link mechanism 12 is used as in the above embodiment, the configurations of the jack 11 and the link mechanism 12 are not limited to those of the above embodiment.
Further, the movable frame 7 is of the type that swings horizontally around the vertical support shaft 32. However, the movable frame 7 may be of the type that reciprocates linearly in the front-rear direction, or may have a structure combining both types. It may be something. Of course, the interlock means is adapted to the structure of the lifting drive means 4 and the movable frame 7, and is not limited to the interlock means 47.

For example, the interlock means 60 shown in FIG.
4 (rotational drive shaft), a projection 61 attached to an appropriate position, a movable stopper 62 that can move back and forth with respect to the rotation trajectory of the projection 61, and the movable stopper 62 and the inner end of the movable frame 7. And interlocking means 63 for interlocking connection. Reference numeral 64 designates the movable stopper 62 as the projection 6
This is a spring that urges and holds at a stop position P1 that protrudes into one rotation locus. According to the interlock means 60, when the movable frame 7 is at the storage position X, the movable stopper 62 is at the restraining position P1, and the rotation of the screw shaft 14 of the jack 11 is prevented by the projection 61 and the movable stopper 62. Therefore, it is impossible to operate the lifting / lowering drive means 4 (jack 11) to move the installation grounding body 2 upward with respect to the furniture main body bottom plate 1, and to ground each of the moving wheels 5A, 5B, 6. When the movable frame 7 is switched to the pull-out position Y, the interlocking means 63 switches the movable stopper 62 to the retracted position P2 against the spring 64, so that the screw shaft 14 of the jack 11 becomes rotatable, and (Jack 11) is activated to make the furniture body bottom plate 1
, The mounting grounding body 2 can be moved upward to ground the moving wheels 5A, 5B, 6.

In the embodiment shown in FIG. 11, the interlocking means 63 is simply provided with the movable stopper 62 and the movable frame 7.
When the movable frame 7 returns from the extraction position Y to the storage position X, the movable stopper 62 is forcibly pushed back via the interlocking means 63 when the movable frame 7 is returned from the extraction position Y to the storage position X. The interlocking means 63 has a structure in which only the pulling force is forcibly transmitted to the movable stopper 62 so that there is no problem even if the projection 61 stops at the position where the projection 61 abuts the movable stopper 62, such as a wire, It is desirable to be composed of a flexible connecting tool or the like.

[0039]

According to the furniture supporting apparatus of the present invention which can be implemented as described above, when moving the furniture main body, the mounting grounding body is moved to a position above the grounding level of the moving wheel by the lifting drive means. By raising, the moving wheels on the furniture main body side are landed, and at the same time, the furniture main body is lowered and the upper end level of the furniture main body can be lowered, so that the space between the ceiling and the ceiling is widened. Although the furniture body can be moved by the moving wheels,
Prior to the movement of the furniture body, the movable frame at the bottom of the furniture body can be pulled forward and at least one moving wheel can be moved so as to protrude forward of the furniture body. However, it can be moved stably.

Further, the interlock means cannot operate the lifting / lowering drive means unless the movable frame is pulled out from the storage position at the bottom of the furniture main body to the draw-out position. In a certain state, that is, in a state where the moving wheels that can be pulled out from the furniture main body are not pulled out, the lifting drive means is operated to raise the installation grounding body with respect to the furniture main body bottom plate, and each moving wheel is moved. There is no such thing as grounding. Therefore, there is no danger of moving the furniture body in an unstable state in which the moving wheels are at the bottom of the furniture body, and the furniture can always be moved safely.

According to the second aspect of the present invention, a movable stopper which is linked to a movable frame is simply added to a link mechanism which allows only a vertical movement of the installation grounding body relative to the furniture body bottom plate. Since the interlock means can be configured, the structure of the interlock means can be simple and easily implemented. In particular, in this case, according to the configuration of claim 23, it is not necessary to add a special member as the movable stopper, and the interlock means can be configured using the link mechanism and the movable frame itself. The present invention can be easily and easily implemented.

According to the fourth aspect of the present invention, since the interlock means has a structure in which the rotation of the rotary drive shaft of the jack is prevented by the movable stopper, the bending movement of the link mechanism is prevented by the movable stopper. As compared with the interlock means, there is no fear that an excessive force is applied to each part at the time of the interlock operation, and the desired interlock action can be realized strongly and reliably. In particular, in this case, according to the configuration of the fifth aspect, the interlock means configured to prevent the rotation of the rotary drive shaft of the jack by the movable stopper can be easily and easily implemented.

Further, according to the structure of the sixth aspect, since the movable frame, which is large in strength, can be used to form a storage portion for the handle for rotating the jack, a large rotation of the jack can be achieved. Not only does it become unnecessary to specially secure a storage space for the operation handle, but also, unless the movable frame is moved to the drawn-out position, the handle cannot be taken out of the storage portion, so that safety can be further enhanced. it can.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view in a state where a furniture main body is installed at a predetermined position.

FIG. 2A is a vertical sectional front view in the same state, and FIG. 2B is an enlarged vertical sectional front view of the relevant part.

FIG. 3 is a vertical sectional side view showing the link mechanism in the same state.

FIG. 4 is a vertical cross-sectional side view showing a fixed position moving wheel in the same state.

FIG. 5 is a longitudinal sectional side view showing the jack in the same state.

FIG. 6 is a vertical sectional side view showing a state in which the movable frame is pulled out to a pull-out position from the same state.

FIG. 7A is a vertical sectional side view showing a state when the furniture main body is moved, and FIG. B is an enlarged vertical sectional front view of the relevant part.

FIG. 8 is a longitudinal sectional side view showing the moving wheel in the same state.

FIG. 9 is an enlarged partial cross-sectional plan view of a main part of FIG. 1;

FIG. 10 is a partial cross-sectional plan view of a main part showing a state of the locking means in a state where the movable frame is pulled out to a pull-out position.

FIG. 11 is a cross-sectional plan view of a main part showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Furniture main body bottom plate 2 Installation grounding body 3 Base wheel 4 Elevating drive means 5A, 5B Position fixed moving wheel 6 Pullable movable wheel 7 Movable frame 11 Jack (elevating driving means) 12 Link mechanism (elevating driving means) Reference Signs List 14 Screw shaft (rotating shaft for drive of lifting drive means) 15 Female screw body 17 Handle for rotation operation of lift drive means 18-21 Double-folded link 22, 23 Interlocking rod 24a, 24b Link unit 25-27 Support shaft 32 Movable Vertical support shaft of frame 39 Locking means 40 Movable locking piece 41 Fixed locking piece 46 Handle storage section 47,60 Interlocking means 48,62 Movable stopper 52 Bracket 52a Horizontal support plate section 52b Vertical stopping plate section (fixed locking) 55) Stopper for ascending and descending jack of jack 61 Projection of rotary drive shaft (screw shaft) of jack 63 Interlocking hand

Claims (6)

[Claims] An installation grounding body, which can be raised and lowered between an upper position and a lower position with respect to a ground level of the moving wheel, on the bottom of a furniture body having at least three moving wheels on the bottom, and the mounting. Means for raising and lowering the grounding body for use, wherein at least one of the wheels for movement is attached to an end of a movable frame that can be pulled out forward with respect to the furniture body, and the grounding body for installation is provided. A furniture support device configured to support a furniture body so as to be movable on a floor surface with the movement wheel when the movement wheel is at an upper position with respect to a ground level, wherein the movable frame is a furniture body. Furniture support device provided with interlock means for activating said lifting drive means only when pulled out from a storage position at the bottom to a draw-out position. 2. The lifting drive means comprises: a jack for raising and lowering the grounding member for installation with respect to the bottom plate of the furniture main body; and a link mechanism for allowing the grounding member for installation to only move up and down in parallel with the bottom plate of the furniture main body. Interlock means,
A movable stopper that can be switched between a restraining position that prevents the movement of the link mechanism when the mounting grounding body is raised with respect to the furniture body bottom plate and a retracted position that allows the movement of the link mechanism; 2. The furniture supporting device according to claim 1, wherein the movable stopper is switched from a restrained position to a retracted position when the movable stopper is pulled out from the storage position to the pull-out position. 3. The movable frame is pivotally supported between a storage position along the left-right length direction of the furniture main body and a pull-out position protruding forward at a substantially right angle from the furniture main body, and is freely swingable.
The furniture supporting device according to claim 2, wherein the movable stopper is formed at an inner end of the movable frame, and the movable frame also serves as the interlock means. 4. The lifting drive means includes a jack for lifting the grounding member for mounting with respect to the bottom plate of the furniture main body, and the interlock means controls a stop position for preventing rotation of a rotary drive shaft of the jack and the rotation drive. A movable stopper that can be switched to a retracted position that allows rotation of the shaft, such that when the movable frame is pulled out from the storage position at the bottom of the furniture body to the drawn-out position, the movable stopper is switched from the restrained position to the retracted position. The furniture support device according to claim 1, wherein: 5. The movable stopper is supported so as to be able to move back and forth with respect to a rotation trajectory of a projection protruding from a rotary drive shaft of a jack, and the movable stopper and the movable frame are interlockingly connected by interlocking means. The furniture support device according to claim 4. 6. A housing for accommodating a handle for rotating the jack is provided at a portion of the movable frame which is in a drawn-out position and projects forward from the furniture body.
The furniture support device according to any one of the above.