JPH06165720A - Device for raising up and bringing down pivotable body - Google Patents

Abstract

PURPOSE:To provide a device for raising up and bringing down a foldaway bed or the like, which is of simple construction, lightly raised up and brought down and has a buffering property. CONSTITUTION:A foldaway bed 10 is so connected to a damper 20 through a connecting lever 30 that the rotational movement of the foldaway bed 10 pivoted in a deviated position is convertibly transmitted to the vertical movement of a wall surface. The damper 20 is provided with a slider 22 moved downward by a coiled spring 26, so that the biasing force is minimized when the foldaway bed 10 is raised up to provide a buffering property and the biasing force is offset against a load varied with the rise and fall of the foldaway bed 10 to lighten the raising-up and bringing-down operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raising / lowering device for a raising / lowering rotating body which is preferably used for a raising / lowering rotating body such as a storage bed or a storage table.

[0002]

2. Description of the Related Art As a tilting device used for a tilting and rotating body of this kind, for example, by rotatably fixing it to a wall surface and a lower end portion of a storage bed axially supporting a vertically downwardly displaced position, A retracting device for a storage bed in which a hydraulic damper is interposed between them is generally known and used.

In this case, the storage bed is tilted and kept upright by changing the length of the piston rod in the hydraulic damper that rotates in accordance with the rotational movement of the storage bed.

[0004]

However, in this case, the hydraulic pressure of the hydraulic damper is always constant during the steady state in which the piston rod is maximally projected, and in this steady state, the wall surface and the storage bed are separated from each other by a maximum amount. It is said that the storage bed is standing up. Therefore, when attempting to raise the storage bed, it suffices to follow this hydraulic pressure, but the upper end of the storage bed violently collides with the wall surface due to the constant hydraulic pressure and the bounce of the rotation of the storage bed.

When the storage bed is to be tumbled, although the bed load can be gradually utilized due to the offset of the shaft fulcrum, it is possible to resist the above-mentioned constant hydraulic pressure.
For example, the handle at the top will be pulled down toward you.
Generally requires great power.

In order to prevent the collision of the storage bed and to reduce the fall of the storage bed, for example, a biasing force in the pulling direction is further applied between the wall surface and the storage bed together with the hydraulic damper to offset the hydraulic pressure. By providing the coil spring as described above, the improvement can be considerably improved, but the complication of the raising and lowering device causes a cost increase and a complicated production.

The present invention has been made in view of such circumstances, and a problem to be solved by the present invention is to make the structure as simple as possible to obtain a cushioning property for preventing collision at the time of standing and to perform a tilting operation. It is an object of the present invention to provide a hoisting device for hoisting and rotating body including the storage bed, which is lighter in weight.

[0008]

According to the present invention which meets the above-mentioned problems, a cushioning action at the time of standing is obtained by using a variable biasing force toward the standing state in accordance with the tilting of the tilting and rotating body. In order to reduce the weight of the tilting operation by offsetting this variable biasing force with the variable load of the tilting rotating body that is variable by pivotally supporting the vertically downward displacement position, The rotary motion of one of the upper and lower ends of the tilting and rotating body is converted into a vertical motion on the wall surface side, and the vertical motion is received by a variable biasing force. A slider fixed to the vertical guide rod is urged downward by a coil spring that is wound around the vertical guide rod. Upside down The tilting rotary body includes a connecting means interposed between the upper and lower end portions of the tilting rotary body and the slider of the damper so as to convert and transmit the rotational movement at the upper and lower end portions of the rotary body to the slider sliding movement of the damper. The tilting device for tilting and tilting body (claim 1) and the relationship between the damper of claim 1 and the tilting and tilting body are such that the downward biasing force of the slider is lost in the standing state of the tilting and tilting body. The present invention relates to a raising / lowering device for a raising / lowering rotating body (claim 2) characterized by being restricted, and these are provided as means for solving the above problems as the gist of the invention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the drawings showing the following embodiments. In FIGS. 1 to 5, A is a bed furniture, 10 is an upright storage in a storage portion 13 of the bed furniture A,
A storage bed which can be tilted down so as to be used by overturning, 20 is a damper, and 30 is a connecting rod as a connecting means between the storage bed 10 and the damper 20.

In this embodiment, the storage bed 10 is pivotally supported between the side plates 15 of the storage section 13 of the bed furniture A by the pivot shaft 11 so that the bed can be raised and lowered.
When the storage bed 10 is erected, the upper and lower downward displacement positions thereof (the width direction wall surface side displacement position in the overturned state) are set so that the load when the storage bed 10 is erected can be varied. is there. That is, the pivotal support position is a position deviated from the center position so that it is 115 mm from the lower end position of the above-mentioned vertical dimension 910 mm of the storage bed 10, and the pivot shaft 11 is pivotally supported when the storage bed 10 is erected. While the load is applied, the downward load is gradually increased in the falling direction.

On the other hand, the damper 20 is provided with a slider 2 which is vertically slidably engaged with a vertical guide rod 21.
2 is made of wall-fixing steel which is urged downward by a coil spring 26 arranged in a downward winding shape of the vertical guide rod 21.

That is, in the damper 20 of this embodiment, the vertical guide rod is formed by using a cylindrical vertical steel pipe having a diameter of 12 mm and a length of 600 mm, for example, which is welded and fixed between the upper and lower L-shaped wall fittings 27. The vertical guide rod 21 has a larger diameter of 27 mm, and has a through hole 24 having a diameter of 12.5 mm corresponding to the diameter of the vertical guide rod 21.
For example, a slider 22 made of the same cylindrical vertical steel pipe having a length of 60 mm, which is vertically fitted, is attached to the vertical guide rod 2
1 is fitted so as to pass through the through hole 24 of the bearing cap 23, and is vertically slidably guided.

As the coil spring 26 for urging the slider 22 downward, for example, a steel material having a diameter of 4 mm and a coil having a diameter of 40 mm and a length of 200 mm and a stroke of 370 mm is used, which corresponds to the length of the vertical guide rod 21. The length range is covered.

The coil spring 26 is fitted onto the slider 22 and has its upper end welded and fixed above the slider 22, while its lower end is also welded and fixed to the lower end of the vertical guide rod 21 and the lower mounting bracket 27. Accordingly, the vertical guide rod 21 is arranged in a winding shape below, and a biasing force for biasing the slider 22 downward is applied.
Is given to.

As described above, the damper 20 having the slider 22 biased downward is provided with the upright piece 28 of the mounting bracket 27.
To the wall surface of the back plate 16 of the bed furniture A storage unit 13,
By tightening the bolts, they are individually installed at one central position in the lateral direction of the wall surface.

The connecting rod 30 is provided between the retractable storage bed 10 and the damper 20 to connect them, and the damper 20 raises and lowers the storage bed 10 to control it. There is something to do.

The connecting rod 30 is, for example, a square steel pipe having a width of 13 mm and a length of 447 mm. In this example, this is used for the lower end portion of the storage bed 10, particularly the lower surface and the upper end of the slider 22 on the derper 20. Fixed between the parts,
At this time, the relationship between the damper 20 and the storage bed 10 is regulated so that the downward biasing force of the slider 22 is lost when the storage bed 10 is in the standing state.

In the interposition fixing, the tongue-shaped receiving metal fitting 32 protruding from the lower surface on the storage bed 10 side is fixed by welding to the upper end front surface on the slider 22 side. Similarly, the tongue-shaped receiving metal fittings 25 are respectively inserted into the tip slits 31 of the connecting rods 30 and the bolts 33 are tightened from the side surfaces, so that the fixing portions of the connecting rods 30 can be freely rotated. I am doing it.

FIG. 6 shows another example. In this example, the connecting means is a wire 34, and this is used as the storage bed 1.
0, especially between the upper end of the slider 22 and the upper end of the slider 22, and the pulley 35 for accommodating the wire 34 on the damper 20.
It is configured as installed on the top plate 14 of No. 3.
Since the remainder does not change, the same reference numerals are given and the description thereof is omitted.

In the figure, reference numeral 12 is a rotary leg that supports the storage bed 10 by turning upright when the storage bed 10 falls down, 17 is a damper cover, and 18 is a shelf provided in the storage section 13.

According to each of the above examples, the coil spring 26 contracts when the storage bed is upright, the biasing force of the slider 22 is lost, and the slider is in the steady position at the fixed position. When the slider 22 is extended to the maximum and the urging force of the slider 22 is maximized, the slider 22 is slid above the vertical guide rod 21 and positioned.

That is, it becomes possible for the damper 20 on the wall surface side to convert the rotational movement of the upper and lower ends of the storage bed 10 into the vertical movement and to receive this with a variable biasing force.

At this time, the storage bed 10 is made to have a variable load for maximizing the above-mentioned fall state, and the variable load has an inverse relationship with the above-mentioned biasing force. Will be offset by the load,
The erection operation of the storage bed 10 can be significantly reduced in weight, and the urging force that is gradually weakened by the contraction of the coil spring 26 is lost when the storage bed 10 is erected, and the collision of the storage bed 10 is prevented. It is possible to obtain a buffering effect when standing up.

Although the illustrated example is as described above, the tilting device of the present invention may be applied to other tilting / rotating bodies such as a storage table and a storage cabinet which are also stored in the same manner. In the practice of the present invention, including making the slider shorter or block-shaped, engaging the slider with the vertical guide by groove fitting, or disposing the slider so as to be embedded therein. Is a specific material, shape, dimension, structure of the damper, its vertical guide rod, slider, coil spring, tilting and rotating body, and connecting means,
These relationships, additions to these, and the like can be modified in various ways without departing from the spirit of the invention, and are not particularly limited to those illustrated and described above.

[0025]

As described above, according to the present invention, the slider, which is engaged with the vertical guide rod so as to be slidably guided in the vertical direction according to the first aspect of the present invention, is attached to the lower side by the coil spring arranged in a downward winding shape of the vertical guide rod. In order to transfer and transmit the rotational movement of the upper and lower end portions of the urging body fixed damper and the tilting and swinging body which is tilted up and down by pivotally supporting the vertically downward displacement position to the slider slide movement of the damper. Since the upper and lower ends of the tilting rotary body and the connecting means interposed between the sliders of the damper are provided, the rotary motion of the upper and lower one ends of the tilting rotary body is increased and decreased on the wall surface side. It is possible to provide a raising / lowering device for a raising / lowering rotating body that is capable of being converted into a dynamic movement and receiving this with a variable biasing force.

Therefore, the variable load of the tilting rotary member and the above-mentioned urging force due to the fact that the shaft supporting position is set to the vertically downwardly displaced position so that it can be tilted up and down cancels each other out because the biasing force is offset. The tilting operation can be significantly reduced in weight.

Further, since the variable biasing force is gradually weakened at the time of standing up, it is possible to obtain the cushioning property at the time of standing up for preventing the collision of the tilting and rotating body.

Further, the second aspect of the present invention is characterized in that the relationship between the damper and the tilting rotary member is restricted so that the downward biasing force of the slider is lost in the standing state of the tilting rotary member. In addition to this, it is possible to completely prevent the collision of the tilting / rotating body and to provide a tilting / lowering device for the tilting / rotating body having a more complete cushioning property.

[Brief description of drawings] Fig. 1 Perspective view of bed furniture Fig. 2 Longitudinal sectional view showing relationship between damper and storage bed Fig. 3 Exploded perspective view of damper Fig. 4 Perspective view of damper Fig. 5 Relationship between damper and storage bed FIG. 6 is an enlarged side view showing another example. FIG.

[Explanation of symbols]

 A Bed furniture 10 Storage bed 11 Rotating shaft 20 Damper 21 Guide rod 22 Slider 26 Coil spring 30 Connecting rod

Claims (2)

[Claims] 1. A wall-fixing damper in which a slider, which is vertically slidably engaged with a vertical guide rod, is urged downward by a coil spring arranged in a downward winding of the vertical guide rod, and a vertical direction. The upper and lower end portions of the tilting rotary body and the upper and lower end portions of the damper are converted and transmitted to the slider slide movement of the damper so that the rotary motion of the tilting rotary body which is tilted up and down by pivotally supporting the lower eccentric position can be transferred. A hoisting device for a hoisting and rotating body, comprising: connecting means interposed between sliders of a damper. 2. The tilting rotary body according to claim 1, wherein the relationship between the damper and the tilting rotary body is restricted so that the downward biasing force of the slider is lost in the standing state of the tilting rotary body. Up and down device.