JP2000120260A - Underfloor storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move up and down a rising/falling body at a constant urging force by selectively urging the body in accordance with a load added to the body by two or more pairs of constant load springs installed in the body. SOLUTION: Actuation rods 15, 15 are positioned so as not to press any movable shaft 6 by the urging force of springs 14, and all movable shafts 6 are set to fix to fixing walls when a pallet 12 is located at the uppermost level. The urging forces of all constant load springs 1 are allowed to act on the pallet 12. Even if storing articles are put in the storage container 12a in this condition, as long as the load does not exceed all the urging force, the pallet 12 does not move down immediately. Then, when an operation button 25 is manipulated to transfer the actuation rod 15, the pallet 12 starts to descend when the weight of the articles balances the urging force of the constant load springs 1. In this way, since it is made possible that an urging force of the constant load springs can be applied in accordance with the load of articles to be housed, the rising/falling body can be handled in a condition always balanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor storage device capable of selectively balancing the lifting and lowering force of an elevating body such as an article storage device in an underfloor storage in accordance with a load applied to the elevating body. .

[0002]

2. Description of the Related Art A storage is often provided under the floor of a house. In order to facilitate the work of storing or taking out the stored articles in the storage, a configuration has been developed in which the article storage device can be moved up and down and the lifting force is balanced. As an example of this conventional apparatus, there is also disclosed a configuration including an elevating body such as an article storage device in which a constant load spring is set in a storage space under the floor (Japanese Utility Model Laid-Open No. 7-19481).

[0003]

The structure of the above-mentioned conventional device is a structure comprising a pair of constant load springs. Therefore, it is necessary to select a constant load spring having a biasing force according to the load of the stored article. However, in this case, a pair of constant load springs having an average urging force is selected. For this reason, when the load of the stored article is light, the urging force is excessive, and when the load is heavy, the urging force is insufficient.

Accordingly, an object of the present invention is to solve the above-mentioned drawbacks of the conventional apparatus and to provide an underfloor storage apparatus which can always move up and down by a constant urging force irrespective of the magnitude of the load of stored articles. did.

[0005]

In order to achieve the above object, according to the present invention, an underfloor storage device is configured as follows. That is, the elevating body installed in the underfloor storage space can be selectively urged by two or more pairs of constant load springs provided in the elevating body according to the load applied to the elevating body. It is characterized by being done.

In the underfloor storage device according to the present invention,
The elevating body includes a pallet and a combination of the pallet and the storage device. The latter case also includes a configuration in which a storage device is placed on a pallet or a configuration in which these are integrated.

Further, two or more pairs of constant load springs are provided at positions where the urging force can be effectively applied to the elevating body. For example, two or more pairs of constant load springs can be provided at positions on opposite side surfaces of the elevating body and at positions corresponding to the upper edge or the bottom of the underfloor storage space.
For reasons of the device configuration, it is preferable that the constant load springs are respectively provided at the upper edge positions of the underfloor storage spaces.

[0008] The starting end of the spring band of each pair of constant load springs is attached to a portion of the lift body that can stably support the lift body and effectively apply the biasing force of the constant load spring. This attachment includes a case where the attachment is locked as well as a case where the attachment is fixed. For example, it is possible to adopt a configuration in which the starting ends of two or more constant load springs are respectively attached to opposite side surfaces of the elevating body. In particular, when the elevating body has a storage device, the starting ends of the spring bands are respectively attached to positions corresponding to the bottom or upper edge of the storage device, since the biasing force of the constant load spring can be effectively applied. Is preferred.

Further, the underfloor storage device according to the present invention has a configuration in which two or more pairs of constant load springs can be selectively biased according to the load applied to the elevating body. Therefore, only the urging force of the selected constant load spring can be applied to the elevating body according to the magnitude of the load applied to the elevating body.
The selection of the constant load spring is made for each pair of the constant load springs in order to stably support the elevating body at the time of elevating. In other words, when the load applied to the elevating body is lightweight,
A pair of constant load springs is selected, and if the load is heavy, two or more pairs are selected. Therefore, there is no particular limitation on the number of pairs of constant load springs.

Various configurations can be employed to selectively bias two or more constant load springs. For example, the following configuration can be employed. That is, a movable shaft capable of being displaced in the axial direction is provided at the beginning of the spring band of the constant load spring, and the movable shaft can be biased by being selectively locked to the elevating body. It is a configuration characterized by the following.

According to the above configuration, only the starting end of the selected pair of constant load springs is locked to the lifting / lowering body, and only the urging force of the locked constant load spring is applied to the lifting / lowering body. In this case, the selection of the movable shaft to be locked can be made automatically by electric control or manually.

[0012]

Next, an embodiment of the underfloor storage device according to the present invention will be described. In the underfloor storage device A according to the embodiment, as shown in FIGS. 1 and 2, pallets 12 as elevating bodies installed in the underfloor storage space B are provided at both sides of the pallet 12. The pair of constant load springs 1... Can be selectively biased according to the load applied to the pallet 12.

The constant load spring 1a includes a constant load spring 1a,
1 c, 1 e, 1 g, and 1 i are provided in parallel on one side surface of the pallet 12 and at the upper edge position of the underfloor storage space B. Further, the constant load springs 1b, 1d, 1f, 1
h and 1j are provided in parallel at the other side surface of the pallet 12 and at the upper edge position of the underfloor storage space B.
Regarding these constant load springs 1, 1a and 1b, 1c and 1d, 1e and 1f, 1g and 1h, and 1i and 1j form a pair, respectively.

The constant load spring 1 has a spring band 4 wound around a drum 2 as shown in FIGS. Reference numeral 3 denotes a support shaft of the drum 2. The starting end 4 a of the spring band 4 is fixed to the bearing 5. Bearing 5
Inside, the movable shaft 6 is provided so as to be movable in the axial direction. The movable shaft 6 is urged by a spring 7 toward the pallet 12.

The constant load spring 1 is provided in a state where both ends of the support shaft 3 are locked in the long holes 8a, 8a of the bracket 9. Further, the brackets 9 are provided on both sides in the housing 8 of the device A, respectively, at the upper edge position of the storage space B. Guide plates 10 corresponding to the constant load springs 1 are provided below the bracket 9. The guide plate 10 vertically guides the movable shaft 6 with one end thereof inserted. The housing 8 has a locking shelf 11 at a position near the bracket 9.
Is provided, and the other end of the movable shaft 6 protruded by the movement is locked by the locking shelf 11.

Guide grooves 13 are provided at both ends of the pallet 12, respectively. The guide groove 13 is provided with an opening 13a at a side end surface thereof. The opening 13a has a notch 13b at the lower edge.
Upper wall 13 of pallet 13 corresponding to this notch 13b
At c, one end of the movable shaft 6 which is in the protruding state is locked.
Accordingly, when the pallet 12 descends, the starting end 4a of the spring band 4 moves downward via the movable shaft 6, and as a result, the spring band 4
Is exerted on the pallet 12.

Each of the guide grooves 13 is provided with an operating rod 15 having a tapered surface formed on the tip side.
The side surface of the operating rod 15 is at a position where one end of each movable shaft 6 can be pressed. Each of the operating rods 15 has an engaging portion 16 protruding inward of the pallet 12. The engaging portion 16 has a long hole 17,
Has a pin 2 at the end of the swing arm 19a or 19b.
0 is engaged.

The swing arms 19a and 19b are mounted on the pallet 1
It is substantially symmetrical and linearly connected to the rotation support shaft 18 at the center position 2. In addition, these swing arms 1
A swing arm 19c of the same shape is continuously provided substantially orthogonal to 9a and 19b. The pin 20 at the end of the swing arm 19c
Is engaged with a long hole 23 provided in an engaging portion 22 of the operating rod 21.

The operating rod 21 has a protruding portion 24 protruding from an opening 12b provided on the side surface of the pallet 12. The operation lever 21 can be moved by the operation button 25. That is, as shown in FIG. 5, the operation button 25 is provided so as to be slidable in the guide groove 8a provided in the upper edge of the housing 8.

When the pallet 12 is at the top,
Reference numeral 4 denotes a position where the operation button 25 can be engaged with the engagement recess 26. Therefore, when the operation button 25 is moved along the guide groove 8a while being locked to the projection 24, the operation rod 21 moves accordingly. With the movement of the operating rod 21, the swing arms 19a and 1
9b is swung around the rotation support shaft 18.

By the swing of the swing arms 19a and 19b, the operating rods 15 and 15 are moved along the guide grooves 13 in opposite directions to each other against the urging force of the spring 14. As the operating rod 15 moves, the side portions of the operating rod 15 sequentially press the movable shaft 6. As a result, a part of the movable shaft 6 pressed by the operating rod 15 extends to the locking shelf 11 with the other end protruding. FIG. 6 shows a case where the movable shaft 6 for the constant load springs 1i, 1g and 1e is pressed.

As shown in FIG. 7, when the pallet 12 is lowered in this state, the start ends of the spring bands of the movable shafts 6 for the constant load springs 1i, 1g and 1e which reach the locking shelf 11. While the position of the movable shaft 4a is maintained, the movable shaft 6 of the other constant load springs 1c and 1a is moved downward together with the pallet 12 while being locked by the locking wall 13c.
The biasing force of the moved start end 4 a by the spring band 4 acts on the pallet 12. With this urging force, the load applied to the pallet 12 can be balanced. With such an operation configuration using the operation rod 15 with respect to the movable shaft 6, a selective biasing configuration of two or more pairs of constant load springs 1 can be obtained.

The below-floor storage device A can be operated as follows. First, the operating rods 15, 1
5 is at a position where none of the movable shafts 6 is pressed against by the urging force of the spring 14. Therefore, when the pallet 12 is at the highest position, all the movable shafts 6 are in a state of being locked on the locking wall 13c. Therefore, the urging forces of all the constant load springs 1 act on the pallet 12. In this state, even if the stored articles are stored in the storage device 12a, the pallet 12 does not immediately descend unless the load exceeds the total urging force. Next, as described above, when the operating rod 15 is moved by operating the operation button 25, the pallet 12 descends when the load of the stored articles and the biasing force of the selected constant load spring 1 are balanced. Will start. Thus, the required number of constant load springs 1 can be easily selected according to the load of the stored article.

Next, a second embodiment of the underfloor storage device B according to the present invention is shown in FIG. The underfloor storage device B is provided with operating rods 30, 30 for selecting the constant load spring 1 at positions along the locking shelf 11, respectively. This operating rod 30
Is located on the outer side of the bracket 9. For this reason, the outer end of the constant load spring 1 is pressed against the movable shaft 6. Therefore, the urging force of the spring 7 against the movable shaft 6 acts so that the outer end portion becomes protruding.

One end of a wire 31 is connected to the operating rod 30, and the other end of the wire 31 is connected to an operation button 33 via a pulley 32. The operating rod 30 is urged by a spring 34 so that the operating rod 30 is in a state of pressing against all the movable shafts 6. Therefore, when the operation button 33 is moved along the guide groove 8a, the operating rods 30, 30 are pulled by the wire 31. The wires 31 move in the opposite directions due to the tension, and the pressed state of the movable shafts 6 in the pair is sequentially released. The movable shaft 6 from which the pressed state has been released protrudes while being locked on the locking shelf 11. The subsequent operation when the pallet 12 descends is the same as the operation by the underfloor storage device A.

[0026]

As described above, since the present invention is constituted, the following effects are exhibited. First, in the present invention,
Since it is configured to be able to selectively urge the elevating body by two or more pairs of constant load springs, it is possible to apply the urging force of the constant load spring according to the load of the stored article. This allows the lifting body to be handled in a constantly balanced state.

In addition, since two or more pairs of individual constant load springs do not particularly require a spring having an excessive biasing force, it is easy to design the apparatus and to construct it economically at low cost. it can.

According to a construction in which a movable shaft moving in the axial direction is provided at the start end of the spring band, and the movable shaft is selectively locked to the elevating body to apply the biasing force of the constant load spring. The number of constant load springs according to the load of the article can be easily selected. This makes it extremely easy to select two or more pairs of constant load springs.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view of an underfloor storage device according to the present invention.

FIG. 2 is a plan view of the same fracture surface.

FIG. 3 is a partial longitudinal sectional view of the same.

FIG. 4 is a partial side view of the same.

FIG. 5 is a partial longitudinal sectional view of the same.

FIG. 6 is a plan view of the same partially broken cross section.

FIG. 7 is an explanatory partial side view of the same.

FIG. 8 is a plan view of the same.

[Explanation of symbols]

 A, B Underfloor storage device 1, 1a to 1j Constant load spring 4a Beginning end of spring band 6 Movable shaft 12 Pallet 15, 30 Operating rod

Claims (2)

[Claims] 1. An elevator body installed in a storage space under the floor,
An underfloor storage device characterized in that two or more pairs of constant load springs provided on the elevating body can be selectively urged in accordance with a load applied to the elevating body. 2. A movable shaft which can be moved in the axial direction is provided at a start end of a spring band of a constant load spring, and the movable shaft can be biased by being selectively locked to an elevating body. The underfloor storage device according to claim 1, wherein: