JP2001186940A - Shelf elevating device in furniture to be set at high position - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shelf elevating device capable of easily drawing out/ returning a shelf, preventing the shelf from descending by its own weight when drawing out of the shelf is suspended on the way, and securing the safety in a furniture piece to be set at a high position allowing various articles to be stored or taken out. SOLUTION: A fixing frame 5 with a rotation shaft pivotally supported between a pair of side panels is disposed inside a furniture piece to be set at a high position. The lines of first and second pantographarms 11 and 13 connecting each axial fulcrums of side panels of the fixing frame and a shelf frame 7 are in the shape of parallelogram, and are pivotally supported rotatably. A first elastic member, one end of which is hooked to the fixing frame and the other end to the pantographarms to receive the weight of the shelf frame, is mounted in the rotation axis of the fixing frame. A second elastic member, normally braking the rotation of the rotation axis with the elasticity, is also attached, and the rotation of the rotation axis is possible by changing the elasticity of the second elastic member by a brake releasing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for raising and lowering shelves in furniture for high places, and more particularly to a device for mounting in high place furniture such as a hanging cabinet installed on the upper part of a kitchen or a hanging shoe box mounted on the upper part of an entrance. Related to a rack elevating device.

[0002]

SUMMARY OF THE INVENTION In a kitchen or a hall, etc., in order to efficiently store various infrequently used articles,
Furniture for high places, such as hanging cupboards and hanging shoe boxes, is installed at high places to make the storage space more efficient.

[0003] A user uses a platform such as a stepladder or the like to store or remove items in furniture for high places because the user cannot access the furniture. At the time of removal, the working posture was likely to be unstable, and there was a risk of falling over, resulting in poor work safety. In particular, in the case of heavy objects, the working posture was likely to be unstable, and safety was poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks. The object of the present invention is to safely store various articles despite being mounted at a high place, It is an object of the present invention to provide a shelf elevating device for furniture for high places that can be taken out.

Another problem of the present invention is that even if the total weight of articles stored in a shelf changes, the shelf can be easily pulled out,
It is an object of the present invention to provide a shelf elevating device for furniture for high places that can be returned.

Another object of the present invention is to prevent the shelves from being lowered by their own weight due to the weight of the articles stored therein, and to ensure safety even when the take-out operation is interrupted in the course of pulling out the shelves. It is an object of the present invention to provide a furniture for high places and a shelf elevating device.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a fixed frame fixed in furniture for high places and having a rotating shaft supported between a pair of opposed side plates, and a shelf frame positionable between the side plates of the fixed frame. With respect to the rotating shaft and the side plate of the fixed frame and the side plate of the shelf frame, a line connecting each pivot point is a parallelogram, and is rotatably supported between a vertical position and a horizontal position. The first and second panters are mounted on a rotating shaft located on one side plate side of the fixed frame, and one end is hooked on the fixed frame and the other end is hooked on the side plate of the shelf frame. A first elastic member capable of receiving the weight of the frame, a second elastic member for always restricting the rotation of the rotating shaft by an elastic force, and a brake release means for enabling the rotation of the rotating shaft by the second elastic member And characterized by the following.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a shelf elevating device mounted in furniture for high places, FIG. 2 is a schematic perspective view schematically showing a load variable mechanism, and FIG. 3 is a schematic perspective view showing a braking mechanism.

The furniture for high places 1 is used as furniture for storing various articles which are relatively infrequently used, such as a hanging cabinet or a hanging shoe rack attached to an upper part (high place) of a kitchen or an entrance. The place where the furniture for high places 1 is mounted is not limited to the above-mentioned place, but may be any furniture that can be mounted at high places and can store articles.

A shelf elevating device 3 is installed in the furniture for high places 1. The fixed frame 5 of the shelf elevating device 3 is fixed to the bottom plate 1a of the furniture for high places 1, and side plates 5b that stand up at a predetermined height are formed on both sides of the bottom plate 5a. The shelf frame 7 is supported by the fixed frame 5 so as to swing downward after projecting forward. The shelf frame 7
A plurality of shelves 7b are mounted horizontally at predetermined intervals in the vertical direction. An operation bar 8 extending in the horizontal direction is attached to a lower front part of the shelf frame 7.

That is, a rotating shaft 9 is rotatably supported between the side plates 5b, and first and second rotating shafts 9 are provided between both end portions of the rotating shaft 9 and the respective side plates 5b and the side plates 7a of the shelf frame 7. When the panta arms 11 and 13 are connected such that imaginary lines connecting the respective swing fulcrums form a parallelogram, and when the shelf frame 7 swings downward while projecting forward with respect to the fixed frame 5, The shelf frame 7 is swung so that the top and bottom directions always point in the vertical direction.

A first torsion spring 15 as a first elastic member constituting a part of the load variable member is mounted on the end of the rotating shaft 9 on one side plate 5b side.
One end of 5 is locked in a long hole 11 a formed in the first pantarm 11. Further, the other end of the first torsion spring 15 is locked on a rotating disk 17 rotatably supported by the rotating shaft 9. The rotary disk 17 has a gear disk 17a.
Are provided integrally, and the fixed frame 5 is provided on the gear disc 17a.
The bottom plate 5a has an axis in a direction orthogonal to the axis of the rotating shaft 9 and is rotatably supported by a worm shaft 19. The rotation of the worm shaft 19 rotates the turntable 17 to change the outer diameter of the first torsion spring 15, thereby making the elastic force variable.

The rotation of the rotary disk 17 and the gear disk 17a is restricted by the stopper 21 fixed to the rotary shaft 9 in the direction opposite to the first torsion spring 15. The worm shaft 19 is located inside the shelf frame 7. When the weight changes in accordance with the type and number of articles to be stored, a handle (not shown) is attached and the turning operation is performed.

A toothless gear 23 is fixed to the shaft end of the rotating shaft 9 located on the other side plate 5b side.
Is engaged with a braking gear 25 rotatably supported by the side plate 5b. The braking gear 25 has a braking drum 27
Are provided on the same axis, and second and third elastic members are formed on the outer peripheral surface of the braking drum 27. Second and third torsion springs 29 and 30 having different winding directions are always provided by their elastic forces. It is mounted so as to stop the rotation of the braking drum 27 by pressing.

That is, the second and third torsion springs 29
30 is wound to a diameter smaller than the outer diameter of the braking drum 27,
The third torsion springs 29 and 30 are mounted on the outer peripheral surface of the braking drum 27 while being elastically deformed in the direction of increasing the diameter, and are constantly pressed by the elastic force. At this time, the second and third torsion springs 29 and 30 are mounted so that the elastic pressure contact directions with respect to the outer peripheral surface of the braking drum 27 are different. For example, the second torsion spring 29 moves clockwise, for example, when the shelf frame 7 described below descends. For the rotating braking drum 27,
In order to increase the elastic force in the direction of restricting the rotation, the third torsion spring 30 acts on the braking drum 27 which rotates counterclockwise when the shelf frame 7 is raised.
Each is wound so as to increase the elastic force in a direction for regulating the rotation.

The second and third torsion springs 29
One end of the fixed frame 5 is fixed to each of the fixed frames 5, and the other end of each of the fixed frames 5 is connected to an arm 5d whose center is swingably supported by a bracket 5c provided on the fixed frame 5, and The end is fixed to an end of a wire 31 described later. The elastic force of the second and third torsion springs 29 and 30 is set so as to be pressed by a force corresponding to the maximum weight that can be stored in the shelf frame 7 when mounted on the outer peripheral surface of the braking drum 27.

On the other hand, swing levers 33 are rotatably supported on the inner surface of the lower portion of the side plate 7a of the shelf frame 7, and a brake release bar 35 is provided between one arm of each swing lever 33.
Are mounted in parallel with the operation bar 8. Also,
The other arm portion of the swing lever 33 located on the side of the toothless gear 23 is bent and formed so as to extend outward through the notch portion 7c of the side plate 7a, and the other arm portion is rotatable with the side plate 7a. One arm of the supported link lever 37 is connected.

A wire 31 is connected between the other arm of the link lever 37 and one of the other ends of the second and third torsion springs 29, 30.
When the rocking operation is performed to the operation bar 8 side, the braking drum 27
2nd and 3rd torsion springs 29
The rotating shaft 9 is made rotatable by elastically deforming the radial direction 30 to loosen the pressure contact. As a specific attachment mode of the wire 31, the brackets 7d and 39 are respectively attached to the fixed frame 5 near the side plate 7a and the toothless gear 23, and each end of the wire tube 41 is fixed to the bracket 7d and 39. The wire 31 is inserted into the wire tube 41.

Next, the operation of the shelf elevating device 3 configured as described above will be described. FIG. 4 is a schematic side view of the shelf frame 7 in an ascending / descending state, FIG. 5 is a schematic perspective view of a load adjusting state, FIG. 6 is a schematic perspective view of a braking released state, and FIG. FIG. 7 is an explanatory diagram showing a state in which the shelf frame 7 is pushed in with respect to FIG.

In order to pull out the shelf frame 7 from the inside of the furniture for high places 1 downward, as shown in FIG. 4, the shelf frame 7 is pulled out while holding the brake release bar 35 together with the operation bar 8. Swing downward.

At this time, the swing lever 33 and the link lever 37 are respectively swung in the direction of the arrow shown by the gripping of the brake release bar 35 to pull the wire 31, and the second and the second levers are brought into pressure contact with the outer peripheral surface of the brake drum 27. By elastically deforming the third torsion springs 29 and 30 in the radially increasing direction, the pressing force against the outer peripheral surface of the braking drum 27 is weakened, and the rotating shaft 9 is made rotatable.

Further, the first torsion spring 15 whose one end is locked in the elongated hole 11a of the first panta arm 11 elastically deforms in a direction to increase the elastic force with the swing of the shelf frame 7. At this time, since the weight of the shelf frame 7 acts, the first torsion spring 15 can be elastically deformed without requiring a large force, thereby preventing operability from being hindered.

The shelf frame 7 to be pulled out is fixed to the fixed frame 5 by the first and second panta arms 11 and 13.
, The posture is controlled so that the top and bottom directions always point in the vertical direction even during the drawing, and the stored articles can be prevented from jumping out. Further, it is necessary to adjust the elastic force of the first torsion spring 15 according to the type and number of articles stored in the shelf frame 7. As a method of this adjustment, the worm shaft 19 is rotated in a predetermined direction by a handle attached to the shaft end of the worm shaft 19, and the rotating disk 17 is rotated via the gear disk 17a.
Is rotated to selectively elastically deform the first torsion spring 15 in the radially increasing direction or the radially decreasing direction, so that its elastic force is varied according to the total weight of the shelf frame 7.

When the shelf frame 7 is pulled out, the first panta arm 11 pivoted to the horizontal position comes into contact with the bottom plate 5b of the fixed frame 5, and the shelf frame 7 faces downward.
Swinging regulates. When the holding of the brake release bar 35 is interrupted during the drawing of the shelf frame 7 or after the drawing is completed, the wires 31 are moved by the swing lever 33 and the link lever 37 that swing in the opposite directions to the above, and the second and third wires are moved.
The torsion springs 29 and 30 are elastically returned in the diameter reducing direction and are pressed against the outer peripheral surface of the braking drum 27. At this time, for example, the third torsion spring 30 is wound so as to have an elastic force in a direction coinciding with the rotation direction of the braking drum 27 that rotates as the shelf frame 7 descends, so that the third torsion spring 30 slips to generate a large braking force. Although the second torsion spring 29 cannot be obtained, the second torsion spring 29 is mounted in a winding state in which the elastic force increases in the direction opposite to the rotation direction of the braking drum 27 that rotates as the shelf frame 7 descends. The descent can be reliably stopped. Thus, the shelf frame 7 can be stopped and held at an arbitrary position during the drawing and at a lower position when the drawing is performed.

Next, in order to return the shelf frame 7 to the high place furniture 1, the brake release bar 35 is gripped together with the operation bar 8, and the second and third torsion springs 29 for the brake drum 27 are operated in the same manner as described above. After loosening the pressure contact state of 30 and enabling the rotation of the rotating shaft 9, the shelf frame 7 is swung upward around the fixed frame 5 while lifting the shelf frame 7 upward.

At this time, since the first torsion spring 15 is elastically deformed to increase the elastic force at the time of the above-described drawing, the elastic force of the first torsion spring 15 accompanying the lifting of the shelf frame 7 causes the shelf frame 7 to return. And the shelf frame 7 can be lifted with less force. Further, one end of the first torsion spring 15 which is locked in the long hole 11a of the first panta arm 11 is positioned and locked at the end opposite to the one at the time of pulling out.

When the holding of the brake release bar 35 is interrupted while the shelf frame 7 is being lifted, the elastic force of the second and third torsion springs 29 and 30 pressed against the outer peripheral surface of the brake drum 27 in the same manner as described above. Thus, the rotation of the rotating shaft 9 can be restricted and the shelf frame 7 can be stopped and held at an intermediate position. At this time, contrary to the above, the second torsion spring 29 easily slips on the outer peripheral surface of the braking drum 27 and cannot obtain a large braking force, but the third torsion spring 30 moves with the rise of the shelf frame 7. Since it is wound around the rotating braking drum 27 in a direction in which the elastic force increases, the ascending of the shelf frame 7 can be reliably stopped.

When the shelf frame 7 is lifted upward by the above operation, the shelf frame 7 stops slightly in front of the fixed frame 5 and is completely located in the furniture for high places 1. Not in state. For this reason, when the shelf frame 7 is pushed into the furniture for high places 1 in this state, the shelf frame 7 is connected to the other end of the first torsion spring 15 in the elongated hole 11a by the other end. By moving toward the end, the width of the long hole 11a is shifted backward.
(Inside the furniture for high places 1), and can be completely accommodated in the furniture for high places 1.

In the above description, the braking gear 25 and the braking drum 27 are connected to the rotating shaft 9 via the toothless gear 23 as a braking mechanism, and the second and third brakes are always pressed against the outer peripheral surface of the braking drum 27. Although the rotation of the rotating shaft 9 is regulated by the torsion springs 29 and 30, the second and third torsion springs 29 and 30 are mounted on a part of the rotating shaft 9 in the same manner as described above, and the outer peripheral surface of the rotating shaft 9 is formed. 2nd and 3rd which are respectively pressed against
Needless to say, a structure in which the rotation of the rotating shaft 9 is restricted by the elastic force of the torsion springs 29 and 30 may be employed.

In the above description, a long hole 11a is formed in the first panta arm 11, and one end of the first torsion spring 15 is locked in the long hole 11a so as to be pulled out of the furniture 1 for high places. In the above, the shelf frame 7 is once pulled out from the furniture for high places 1 and then allowed to swing downward, and when the shelf frame 7 is lifted,
After being stopped in front of the furniture for high places 1, it can be pushed into the furniture for high places 1, but one end of the first torsion spring 15 is locked in a hole formed in the first panta arm 11, and the shelf It may be a structure that can be pulled out and lifted directly from inside the furniture for high places 1 with the swing of the frame 7.

Further, the above description is based on the brake release bar 35 and the second
The brake drum 27 is connected to the end of the torsion spring 29 by the swing lever 33, the link lever 37, and the wire 31 and is connected to the second and third torsion springs 29 and 30.
Although the brake can be released, the brake release bar 35 and the ends of the second and third torsion springs 29 and 30 may be connected only by a link mechanism or a wire.

[0032]

According to the present invention, various articles can be safely stored and taken out despite being mounted at a high place. Further, even if the total weight of the articles stored in the shelf changes, the shelf can be easily pulled out and returned. Furthermore, even when the take-out operation is interrupted in the course of pulling out the shelf, it is possible to prevent the shelf from being lowered by its own weight due to the weight of the articles stored therein, thereby ensuring safety.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a shelf elevating device installed in furniture for high places.

FIG. 2 is a schematic perspective view schematically showing a load variable mechanism.

FIG. 3 is a schematic perspective view showing a braking mechanism.

FIG. 4 is a schematic side view showing a vertically moving state of a shelf frame.

FIG. 5 is a schematic perspective view showing a load adjustment state.

FIG. 6 is a schematic perspective view showing a brake release state.

FIG. 7 is an explanatory diagram showing a state in which a shelf frame is pushed into furniture for high places.

[Explanation of symbols]

1-Furniture for high places, 3- Shelf elevating device, 5- Fixed frame,
7-shelf frame, 9-rotation shaft, 11 / 13-first and second panta arms, 15-first torsion spring as first elastic member, 17-rotator, 27-brake drum, 29-
Second torsion spring as second elastic member, 31-wire, 35-brake release bar

Claims (8)

[Claims] 1. A fixed frame fixed in furniture for high places and having a rotating shaft pivotally supported between a pair of opposed side plates, a shelf frame positionable between the side plates of the fixed frame, a rotating shaft of the fixed frame, A line connecting each pivot point is a parallelogram with respect to the side plate and the side plate of the shelf frame, and the first and second punter arms are pivotally supported between a vertical position and a horizontal position. , Mounted on the rotating shaft located on one side plate side of the fixed frame, one end is hooked on the fixed frame, and the other end is hooked on the side plate of the shelf frame, and can receive the weight of the shelf frame. A shelf in furniture for high places, comprising a first elastic member, a second elastic member that always restricts rotation of the rotation shaft by an elastic force, and brake release means that enables the rotation of the rotation shaft by the second elastic member. lift device. 2. The apparatus according to claim 1, wherein said first and second elastic members comprise torsion springs wound with a required diameter. 3. The shelf lifting device according to claim 2, wherein the second torsion spring comprises two types of spring members having different winding directions. 4. The first torsion spring according to claim 2, wherein the first torsion spring is mounted on a rotating shaft, one end of which is fixed to a rotating disk which is rotatable about the rotating shaft and can be stopped at a desired position, and has the other end. A shelving elevating device for furniture for high places, which is locked to one of the first and second panta arms and makes the elastic force of the first torsion spring variable by rotating the turntable with respect to the rotation axis. 5. A rotating disk supported by a rotating shaft, wherein the rotating disk is provided coaxially with said rotating disk, said gear disk is meshed with a worm shaft rotatably supported by a fixed frame, A shelf elevating device for furniture for high places, wherein the turntable is rotated in accordance with the rotation of the furniture and the stop can be held at the rotation position. 6. The furniture for high places according to claim 4 or 5, wherein the other end of the first torsion spring is slidably locked in an elongated hole formed in one of the first and second panta arms. Shelf elevating device. 7. The fixed torsion frame according to claim 3, wherein the second torsion spring is wound with a smaller diameter than the outer diameter of the rotary shaft, and one end of the second torsion spring is attached to the fixed frame while being elastically deformed in the radially expanding direction with respect to the rotary shaft. A shelf elevating device for furniture for high places, which is locked and the other end is connected to a brake releasing means. 8. The second torsion spring according to claim 3, wherein the second torsion spring is wound with a diameter smaller than the outer diameter of the rotating shaft, and is mounted on the outer peripheral surface of the brake drum connected to the rotating shaft while elastically deforming in a radially increasing direction. A shelf elevating device for furniture for high places, wherein one end is locked to a fixed frame and the other end is connected to a brake releasing means in a state where the rack is released.