JPH033711Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention is intended for use in under-floor storage (including under-tatami storage).
This invention relates to a lid plate lifting device.

(Prior art) As is well known, this type of storage is constructed by lifting a lid plate attached to the top of the box (in the case of a storage under tatami mats, a tatami mat is fixed to the top of the lid plate). An initial preliminary opening operation to raise the lid plate to a higher position than the floor or tatami surface to create a space that can be used as a handhold, in order to facilitate the lifting operation of the lid plate when opening and closing. Is required. Conventionally, this means for lifting the lid plate includes a device that inserts a hook like a hand hook into the gap between the tatami mats and the lid plate to manually pull up the lid plate, or a device that lifts the lid plate using the power of an electric motor. equipment etc. are being used.

(Problem to be solved by the invention) However, among the conventional devices mentioned above, the former device requires the lifting of heavy tatami mats as well as the lid plate at the same time in the case of under-tatami storage. However, in the case of the latter, it is easy to operate because it does not require any effort to raise the lid plate, but it requires a special electric motor and a dedicated electric motor for just the initial operation. Therefore, it is necessary to incorporate a complicated power transmission device to drive the container, and there are problems such as not only the electrical wiring, etc. must be taken into consideration, but also the cost of manufacturing and installing the storage body increases.

The purpose of this invention is to open and close the cover plate without using any hooks such as hand hooks or with the power of an electric motor, making it possible for even weak women and children to simply insert a card into the opening/closing end of the cover plate. To provide a relatively inexpensive lid lifting device for an underfloor storage, which has a function of easily pushing up a heavy lid plate to a predetermined height with a simple operation.

[Structure of the idea]

(Means for Solving the Problems) The underfloor storage lid plate lifting device according to the present invention was devised to achieve the above object, and its configuration is such that the lid plate lift device faces the opening/closing end of the lid plate. A gas spring is installed vertically on the side wall of the box, and the winding diameter of a helical spring is attached to the upper end of the gas spring and is wound around the outer circumferential surface of the push rod in conjunction with the insertion and removal of the card. It is characterized by a mechanical lock device that is connected to expand and contract.

(Example) Hereinafter, the present invention will be specifically explained with reference to drawings of examples. The drawings show an example of an implementation structure in which the lid plate lifting device according to this invention is applied to an under-tatami storage. The box body 1 has an outline slightly smaller than the area of one tatami mat or half a tatami mat, and is formed to a depth that matches the height under the floor. A lid plate 2 on which a tatami mat 3 is fixed integrally is mounted, and this lid plate 2 is connected to a hinge member H consisting of two long and short diagonal links 4 and 5 and a gas spring.
It is mounted so that it can be opened and closed diagonally upward by an opening/closing device S that is combined with a biasing member C made of _G1 .

The lid plate lifting device U of the present invention includes the above-mentioned opening/closing device S.
In addition to this, there is a box body 1 facing the opening/closing end portion 2a of the lid plate 2.
The gas spring G2 is installed approximately at the center of the side wall 1a of the gas spring, and is constructed by a combination of a gas spring _G2 and a mechanical lock device M connected to the upper part of the gas spring.

Of these, the gas spring G ₂ is equipped with a device similar to the cover plate opening/closing device S mentioned above, and a part of the cylinder 6 is attached to the gas spring G 2.
The lower end of the piston rod 7 is pivotally connected to the side wall 1a of the box body 1 with a pin 8.
On the other hand, the mechanical lock device M is composed of a main body 9 and an operation section 11 that is activated by inserting a card 10 into the main body 9. A push rod 14 connected to the upper end of the gas spring G ₂ is inserted into the upper end of the gas spring G 2 so as to be movable up and down. In this case, the tapered surface of the pushing rod 14
Helical springs 15a and 15b are fitted so that they can be brought into close contact with the large diameter portion D on the end side of _T1 and _T2 , and one end of the helical springs 15a and 15b is attached to an intermediate rotating ring. 16, and the other end is fixed to the upper and lower ends of the sheath cylinder 13 via fixing rings 17a and 17b. Further, the operating section 11 is composed of a swing plate 18 provided outside the opening/closing end 2a of the cover plate 2, and a bracket 20 that swingably supports the swing plate 18 on a pivot shaft 19. A wire 22 that can slide along the inner surface of the tube 21 is provided between the tip of the swing plate 18 and the rotation ring 16 of the main body 9.
are connected to each other, and when the base end of the swing plate 18 is pushed down by the insertion operation of the card 10, the tip of the swing plate 18 pulls the wire 22, and the rotation inside the main body 9 is pulled. The movable ring 16 is rotated in the direction shown by the arrow to enlarge the winding diameter of the helical springs 15a and 15b, and to separate the helical springs 15a and 15b from the large diameter portion D on the end side of the tapered surfaces _T1 and _T2 of the push rod 14. It is now possible to release the lock by

Since the lid lifting device of the present invention has the above-mentioned structure, the underfloor storage to which this device U is installed is normally operated by the gas spring G ₂ and the pushing rod 14 connected thereto, when the lid is closed. is in the lowest position as shown in _FIG . ₂
The push rod 14 is locked together with the cylinder portion 6 to prevent it from moving upward.

However, when it becomes necessary to open the cover plate 2, if the card 10 is inserted from above into the gap outside the opening/closing end 2a of the cover plate 2 and the base end of the rocking plate 18 is pushed down. Since the helical springs 15a and 15b are pulled in the direction of expanding their winding diameters through the wire 22 at the tip, the helical spring 15a attached to the large diameter portion D of the pushing rod 14 becomes loose, and the pushing rod 14 is loosened. The lock of the rod 14 is released, and the pushing rod 14 is raised together with the cylinder portion 6 due to the gas pressure inside the gas spring _G2 , and the cover plate 2 is pushed up to a predetermined height as shown in FIG. At that time, even if you release your hand from the card 10 and the pressing force of the card 10 against the rocking plate 18 disappears, the pushing rod 14 will rise with the intermediate narrow diameter portion d facing the helical springs 15a and 15b. However, since it does not come into direct contact with the inner diameter parts of the helical springs 15a and 15b, it moves upward smoothly and lightly with almost no frictional resistance when rising, and just before reaching the highest position, it passes through the tapered surface _T2 . Since the lower large diameter portion D protrudes into and fits into the inner diameter portion of the helical spring 15b, the pushing rod 14 continues to remain in its protruding state and stop at the highest position unless the cover plate 2 is closed. . Therefore, after this, if the opening/closing end 2a of the lid plate 2 is pulled upward while holding it by hand, the opening/closing operation consisting of the hinge member H and the biasing member C provided on the base end side of the lid plate 2 can be performed. The device S allows the lid plate 2 to be opened lightly and smoothly as shown in FIG.

In addition, when closing the lid plate 2 after taking items in and out of the box body 1, the lid plate 2 is folded down toward the front while grasping the opening/closing end 2a of the lid plate 2.
If the opening/closing end 2a of the cover plate 2 is strongly pressed down while the lower surface is in contact with the upper end of the push rod 14, the original state will be restored in a completely opposite manner to the opening operation described above. When the cover plate 2 is closed and the push rod 14 reaches the lowest position, the inner diameter part of the helical spring 15a reaches the large diameter of the upper part of the push rod 14. Fits firmly into part D,
Lock the cover plate 2 immovably.

[Effect of idea]

As described above, if the lid lifting device of the present invention is installed in an underfloor storage (including under-tatami storage), the lid can be raised without using any hooks such as hand hooks or the power of an electric motor. The structure of the device is very simple, just inserting a card into the opening/closing end, allowing even women and children with limited physical strength to push up the heavy lid plate to a predetermined height and open/close it easily and smoothly. Coupled with the fact that it is relatively simple and can be manufactured at low cost, it exhibits remarkable effects in use.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the main parts showing an example of a concrete implementation structure of an underfloor storage cabinet equipped with a lid plate lifting device according to the present invention, and Figures 2 and 3 are illustrations of opening of the lid plate during use. FIG. 3 is a vertical cross-sectional view showing the operation. U...Lid plate lifting device, S...Opening/closing device, 1...
Box body, 2...Lid plate, 2a...Opening/closing end, M...Mechanical lock device, _G1 , _G2 ...Gas spring, 1
0...Card, 14...Pushing rod, 15a, 15b
...Tangled spring.

Claims (1)

[Scope of utility model registration request] A gas spring is attached vertically to the side wall of the box body facing the opening/closing end of the cover plate, and a gas spring is attached to the upper end of the gas spring to be wound around the outer circumferential surface of the push rod in conjunction with the card insertion/removal operation. A device for lifting a lid plate of an underfloor storage, characterized in that a mechanical locking device for expanding and contracting the winding diameter of a helical spring attached is connected and provided.