JP4146011B2 - Underfloor storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underfloor storage device that can selectively balance the lifting force with respect to a lifting body such as an article container in an underfloor storage according to a load applied to the lifting body.
[0002]
[Prior art]
A storage is often provided under the floor of the house. With respect to this storage, in order to facilitate storing or taking out of stored articles, a configuration has been developed in which the article container can be raised and lowered and the lifting force is balanced. As an example of this conventional apparatus, a configuration including an elevating body such as an article container in which a constant load spring is set in an underfloor storage space is also disclosed (Japanese Utility Model Laid-Open No. 7-19482).
[0003]
[Problems to be solved by the invention]
The configuration of the conventional device described above is a configuration including a pair of constant load springs. Therefore, it is necessary to select a constant load spring having an urging force corresponding 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 biasing force is excessive, and when the load is heavy, the biasing force is insufficient.
[0004]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described drawbacks of the conventional apparatus and to provide an underfloor storage apparatus that can always be moved up and down by a constant urging force regardless of the load of the stored article.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, the underfloor storage device is configured as follows. In other words, the underfloor storage device has an elevating body that can be moved up and down in the underfloor storage space, and a movable shaft that is engaged with and disengaged from the elevating body at a starting end, and the underfloor storage space that corresponds to each side surface portion of the elevating body. A plurality of pairs that are paired in a wound state on each of the side surfaces of the body and extend and contract to follow up and down of the lifting body while urging the lifting body upward when engaged with the lifting body via the movable shaft. The constant load springs and the movable body of the constant load springs are arranged so as to be movable along the arrangement direction of the movable shafts at positions where the movable shafts of the constant load springs can be pressed against each other when the lifting body is at the uppermost position. A pair of operating rods that are sequentially pressed from the end of the row, and provided at the upper edge of the underfloor storage space and connected to the pair of operating rods, and each operating rod is moved by increasing or decreasing the amount of movement of the operating rod. By changing the number of movable shafts of the constant-load spring that is pressed against Characterized in that and an operation button for changing the number of the constant force spring biasing the vertically movable body.
In other words, the lifting body comprising installed under the floor storage space, by the two or more pairs of constant force springs, selectively formed by adapted to urge in response to a load which is added to the lift.
[0006]
In the underfloor storage apparatus according to the present invention, the lifting body includes a pallet or a combination of the pallet and a storage device. In the latter case, a configuration in which a container is placed on a pallet or a unit in which these are integrated is included.
[0007]
Further, the two or more pairs of constant load springs are provided at positions where the urging force can be effectively applied to the lifting body. For example, two or more pairs of constant load springs can be provided at the positions of the opposite side surfaces of the lifting body and at the position corresponding to the upper edge of the underfloor storage space or the bottom thereof. For reasons of device configuration, it is preferable that the constant load springs are provided at the upper edge position of the underfloor storage space.
[0008]
The starting ends of the spring bands of each pair of constant load springs are attached to a portion of the lift body that stably supports the lift body and can effectively apply the urging force of the constant load spring. This attachment includes not only the case of being fixed but also the case of being locked. For example, it can be set as the structure which attached the start end of two or more constant load springs to the both side surface parts which an elevator body opposes, respectively. In particular, when the lifting body is equipped with a storage device, the starting end of the spring band is attached to a position corresponding to the bottom or upper edge of the storage device from the point that the urging force of the constant load spring can be effectively applied. It is preferable.
[0009]
The underfloor storage apparatus according to the present invention has a configuration in which two or more pairs of constant load springs can be selectively biased according to a load applied to the lifting body. Therefore, only the urging force by the selected constant load spring can be exerted on the lifting body according to the magnitude of the load applied to the lifting body. The selection of the constant load spring is made for each pair of constant load springs from the viewpoint of stably supporting the lifting body during lifting. That is, when the load applied to the lifting body is light, a pair of constant load springs is selected, and when the load is heavy, two or more pairs are selected. For this reason, there is no restriction | limiting in particular about the number of pairs of constant load springs.
[0010]
In order to selectively bias two or more constant load springs, various configurations can be adopted. For example, the following configurations can be adopted. That is, a movable shaft that can be displaced in the axial direction is provided at the start end of the spring band of the constant load spring, and this movable shaft can be biased by selectively engaging with the lifting body. It is the structure characterized by these.
[0011]
According to the configuration described above, only the starting ends of the selected pair of constant load springs are locked to the lifting body, and only the urging force of the locked constant load springs reaches the lifting body. In this case, selection of the movable shaft to be locked can be performed automatically by electric control or by manual operation.
Specifically, the movable shaft is selected at the upper edge of the underfloor storage space and connected to the pair of operating rods, and the amount of movement of the operating rods is increased or decreased so that each operating rod is pressed against each other. This is done with an operation button that changes the number of constant load springs that urge the lifting body by changing the number of movable shafts of the load springs.
The operating rod and the operation button may be connected via a swing arm provided at a lower end portion of the elevating body.
The operating rod and the operation button may be connected via a wire disposed on an upper edge portion of the underfloor storage space.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the underfloor storage device according to the present invention will be described. As shown in FIGS. 1 and 2, the underfloor storage device A according to the embodiment includes a pallet 12 as an elevating body installed in the underfloor storage space B provided at both side positions of the pallet 12. The pair of constant load springs 1... Are configured to be selectively biased according to the load applied to the pallet 12.
[0013]
Of the pair of constant load springs 1, the constant load springs 1a, 1c, 1e, 1g and 1i are provided in parallel at one side surface of the pallet 12 and at the upper edge of the underfloor storage space B. Further, the constant load springs 1b, 1d, 1f, 1h and 1j are provided in parallel on the other side surface portion of the pallet 12 and at the upper edge portion position of the underfloor storage space B. For these constant load springs 1, 1a and 1b, 1c and 1d, 1e and 1f, 1g and 1h, and 1i and 1j are paired respectively.
[0014]
Further, the constant load spring 1 includes a spring band 4 wound around the 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. A movable shaft 6 is provided in the bearing 5 so as to be movable in the axial direction. The movable shaft 6 is biased toward the pallet 12 by a spring 7.
[0015]
The constant load spring 1 is provided in a state where both ends of the support shaft 3 are engaged with the long hole portions 8 a and 8 a of the bracket 9. Further, the brackets 9 are provided on both side portions in the housing 8 of the apparatus A and at the upper edge position of the storage space B, respectively. In addition, guide plates 10 corresponding to the constant load springs 1 are provided below the bracket 9. The guide plate 10 guides in the vertical direction with one end of the movable shaft 6 inserted. The housing 8 is provided with a locking shelf 11 in the vicinity of the bracket 9, and the other end portion of the movable shaft 6 that is projected by the movement is locked by the locking shelf 11.
[0016]
In addition, guide grooves 13 are respectively provided at both end portions of the pallet 12. The guide groove 13 is provided with an opening 13a at a side end surface portion thereof. The opening 13a has a notch 13b at the lower edge. One end portion of the movable shaft 6 in a protruding state is locked by the upper wall portion 13c of the pallet 13 corresponding to the notch 13b. Therefore, when the pallet 12 descends, the starting end 4 a of the spring band 4 moves downward via the movable shaft 6, so that the urging force by the spring band 4 reaches the pallet 12.
[0017]
In addition, the guide groove 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 in a position where one end of each movable shaft 6 can be pressed. The operating rod 15 has an engaging portion 16 that protrudes inward of the pallet 12. The engaging portion 16 has a long hole 17, and the long hole 17 is engaged with a pin 20 at the end of the swing arm 19 a or 19 b.
[0018]
The swing arms 19 a and 19 b are connected substantially linearly and linearly with respect to the rotation support shaft 18 at the center position of the pallet 12. In addition, a swing arm 19c having the same shape is connected to the swing arms 19a and 19b substantially orthogonally. The pin 20 at the end of the swing arm 19 c is engaged with a long hole 23 provided in the engaging portion 22 of the operating rod 21.
[0019]
The operating rod 21 has a protrusion 24 that protrudes from an opening 12 b that is provided on the side surface of the pallet 12. The operation button 21 can be moved with 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 8 a provided in the upper edge portion of the housing 8.
[0020]
When the pallet 12 is at the uppermost position, the protrusion 24 is in a position where it can be locked in the locking recess 26 of the operation button 25. Accordingly, when the operation button 25 is moved along the guide groove 8a in a state where the operation button 25 is locked to the protrusion 24, the operation rod 21 moves accordingly. As the operating rod 21 moves, the swinging arms 19a and 19b are swung around the rotation support shaft 18 simultaneously with the swinging arm 19c.
[0021]
Due to the swing of the swing arms 19a and 19b, the operating rods 15 and 15 are moved along the guide groove 13 in opposite directions against the biasing force of the spring 14. As the operating rod 15 moves, the side surface portion of the operating rod 15 sequentially comes into contact with the movable shaft 6. As a result, some of the movable shafts 6 that are pressed by the operating rod 15 are in a protruding state at the other end and extend to the locking shelf 11. FIG. 6 shows a case where the movable shaft 6 is pressed against the constant load springs 1i, 1g and 1e.
[0022]
Further, as shown in FIG. 7, when the pallet 12 is lowered in this state, the start end 4a of the spring band of the movable shaft 6 for the constant load springs 1i, 1g and 1e reaching the locking shelf 11 is Although the position is maintained, the movable shaft 6 for the other constant load springs 1c and 1a is moved downward together with the pallet 12 while being locked to the locking wall 13c. The urging force by the spring band 4 of the moved start end 4 a acts on the pallet 12. This urging force can balance the load applied to the pallet 12. By such an operation configuration by the operating 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.
[0023]
The underfloor storage device A can be operated as follows. First, the operating rods 15 and 15 are initially in a position where neither of the movable shafts 6 is pressed by the urging force of the spring 14. For this reason, when the pallet 12 is in the uppermost position, any movable shaft 6 is in a state of being locked to the locking wall 13c. Therefore, the urging force of all the constant load springs 1 acts on the pallet 12. In this state, even if the stored article is stored in the storage container 12a, the pallet 12 does not immediately drop 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 is lowered when the load of the stored article and the urging force of the selected constant load spring 1 are balanced. Will start. Thus, the number of necessary constant load springs 1 can be easily selected according to the load of the stored article.
[0024]
Next, the second embodiment of the underfloor storage apparatus B according to the present invention is shown in FIG. The underfloor storage device B is provided with operating rods 30 and 30 for selecting the constant load spring 1 at positions along the locking shelf 11. The position where the operating rod 30 is disposed corresponds to the outer portion 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 has a protruding shape.
[0025]
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. Further, the operating rod 30 is biased by a spring 34 so that the operating rod 30 is in a state of pressing all the movable shafts 6. Therefore, when the operation button 33 is moved along the guide groove 8 a, the operating rods 30 and 30 are pulled by the wire 31. When the wires 31 are pulled, the wires 31 move in opposite directions, and the pressing state of the paired movable shafts 6 is released in order. The movable shaft 6 released from the pressing state projects in a state of being locked to 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]
【The invention's effect】
Since the present invention is configured as described above, the following effects are exhibited. First, in the present invention, since it is configured to be able to selectively bias the lifting body by two or more pairs of constant load springs, it is possible to apply a biasing force by a constant load spring according to the load of the stored article. It became. Thereby, a raising / lowering body can be handled in the state always balanced.
[0027]
Further, since two or more pairs of individual constant load springs do not require a spring having an excessive urging force, the design of the apparatus is easy and it can be configured economically.
[0028]
Further, according to the configuration in which the movable shaft that moves in the axial direction is provided at the start end of the spring belt, and the movable shaft is selectively locked to the lifting body to apply the urging force of the constant load spring, the load of the stored article The number of constant load springs according to the number can be easily selected. This makes it very easy to select two or more pairs of constant load springs.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view of an underfloor storage device according to the present invention.
FIG. 2 is a plan view of the same broken section.
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 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-1j Constant load spring 4a Spring belt start end 6 Movable shaft 12 Pallet 15, 30 Actuator

Claims (3)

In the underfloor storage device for storing articles in the underfloor storage space,
An elevating body installed in the storage space below the floor so as to freely move up and down;
A movable shaft that is engaged with and disengaged from the lifting body is provided at a start end, and is wound around each side surface portion of the underfloor storage space corresponding to both side surface portions of the lifting body in a wound state. A plurality of pairs of constant load springs that expand and contract following the raising and lowering of the lifting body while urging the lifting body upward when engaged with the body;
When the lifting body is at the uppermost position, the movable shafts of the constant load springs are arranged so as to be movable along the arrangement direction of the movable shafts, and each movable shaft is moved from the end of the row along the movement. A pair of operating rods that are sequentially pressed against each other;
The number of movable shafts of the constant load spring that is provided at the upper edge of the underfloor storage space and is connected to the pair of operating rods to increase or decrease the amount of movement of the operating rods and to which each of the operating rods presses is changed. And an operation button for changing the number of constant load springs for urging the elevating body. The underfloor storage device according to claim 1,
The underfloor storage device, wherein the operating rod and the operation button are connected via a swing arm provided at a lower end portion of the elevating body. The underfloor storage device according to claim 1,
The underfloor storage device, wherein the operating rod and the operation button are connected via a wire disposed on an upper edge of the underfloor storage space.

Images