JPH08140782A - Magnetic floating type cushion body - Google Patents

Abstract

PURPOSE: To make it possible to surely prevent the mispositioning in a horizontal direction of a member to be cushioned without impairing a cushion property by the repulsive force of magnets in spite of a simple construction. CONSTITUTION: This magnetic floating type cushion body 1 is the magnets 31, 32 for magnetic floating on the front surface part of a floor F and the rear surface part of a bed body 2 disposed in the upper part of this floor F in such a manner that the same poles face each other. The cushion body described above utilizes the repulsive force oft these magnets 31, 32 for magnetic floating. The bed body 2 is provided with the second magnets 42 at the edges on four sides thereof so as to face a horizontal direction. The floor F is provided with the first magnets 41 in the state of parting from the magnetic pole surfaces of the second magnets 42 in such a manner that the magnetic pole surfaces of the same poles face each other and that the movement in the horizontal direction of the member to be cushioned is regulated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation type cushion body used as a cushion member for beds, sofas and the like.

[0002]

2. Description of the Related Art Heretofore, it has been general to use a spring material such as a coil spring as a vibration absorbing member for a bed or a sofa, but in recent years, the repulsion of a magnet having a simple structure and excellent vibration absorbing efficiency. A cushion body that utilizes power has been developed and is being put to practical use. Examples of such a cushion body using the repulsive force of a magnet for a bed or a sofa include, for example, Japanese Utility Model Publication No. 59-41727 and Japanese Utility Model Publication No. 3-510.
The one disclosed by Japanese Patent Publication No. 44, etc. is known.

In the cushion body disclosed in Japanese Utility Model Publication No. 59-41727, a plurality of magnets are embedded in an elastic member made of expandable synthetic resin or the like with the same poles facing each other in the vertical direction. The elastic member is also sandwiched between the upper and lower magnets. The elastic force of the elastic member and the repulsive force of the magnet provide cushioning and vibration absorption.

Further, the cushion body disclosed in Japanese Utility Model Laid-Open No. 3-51044 mentioned above has an upper surface portion of a plate-shaped base member placed on the floor and a plate-shaped member disposed above the base member. The pair of upper and lower magnets are attached to the lower surface of the cushioned member so that the same poles face each other, and the cushioned member is levitated by the repulsive force of these magnets. A belt-shaped position regulating member is provided on the peripheral edge of one of the base member and the cushioned member so as to project in the vertical direction, and the other one of the base member and the cushioned member in the horizontal direction is fitted in the position regulating member. The displacement is regulated.

[0005]

By the way, in the cushion body disclosed in Japanese Utility Model Publication No. 59-41727, a plurality of magnets are vertically arranged in an elastic member made of a foamable synthetic resin or the like. Since the elastic members are embedded between the upper and lower magnets with the same poles facing each other, the repulsive force of the magnets is attenuated by the elastic member, and the cushion due to the repulsive force of the magnets. There was a problem that the action could not be fully utilized.

Further, in the cushion body disclosed in Japanese Utility Model Laid-Open No. 3-51044, one of the base member and the cushioned member is fitted inside a band-shaped position regulating member provided on the peripheral edge of the other. Since the inner peripheral surface of the position regulating member and the outer peripheral surface of the other cushioned member or the base member are in sliding contact with each other, when the cushioned member vibrates, the outer peripheral surface of the cushioned member or the base member. And the inner peripheral surface of the position regulating member rub against each other, and the sliding resistance due to the rubbing interferes with the cushioning property and the vibration absorbing ability, and the rubbing causes an abnormal noise, and the cushion body is placed on the bed or sofa. There was a problem that the comfort was impaired when using it.

Therefore, it is conceivable that a link mechanism is interposed between the base member and the cushioned member, and this link mechanism allows the cushioned member to move up and down while maintaining the horizontal posture. Even in the case of the link mechanism, since the sliding contact portion is mechanically present, obstruction of the cushioning property due to the frictional resistance of the sliding contact cannot be avoided. Further, when such a link mechanism is adopted, there is a problem that the structure of the cushion body becomes complicated as a whole and the manufacturing cost increases.

The present invention has been made to solve the above problems, and has a simple structure,
The cushioning property due to the repulsive force of the magnet is not hindered, and
An object of the present invention is to provide a magnetic levitation type cushion body capable of surely preventing horizontal displacement of a cushioned member.

[0009]

A magnetically levitation type cushion body according to claim 1 of the present invention has a base member upper surface portion and a cushion member lower surface portion disposed above the base member. A magnetic levitation magnet is provided so that the poles face each other, and the magnetic levitation type cushion body uses the repulsive force of these magnetic levitation magnets as a cushion. Cushion member-side magnets are provided so as to face each other, and magnetic pole surfaces of the same polarity face the pole members of these cushion member-side magnets in a separated state, and the cushioned member moves in the horizontal direction. Is provided so that the base member side magnet is provided.

The magnetic levitation type cushion body according to a second aspect of the present invention is the magnetic levitation type cushion body according to the first aspect, wherein a separation distance between the base member side magnet and the cushioned member side magnet is adjustable. It is characterized by being configured in.

[0011]

According to the magnetic levitation type cushion body of the first aspect, the same poles are made to oppose each other on the upper surface of the base member and the lower surface of the cushioned member arranged above the base member. Since the magnetic levitation magnets are provided, the cushioned member is magnetically levitated on the base member by the repulsive force of these upper and lower magnetic levitation magnets, and the elastic function of the repulsive force causes the cushioned member to move vertically. Directional vibrations are absorbed.

Further, the cushioned member side magnets are provided at the four edges of the cushioned member side so as to be oriented in the horizontal direction, and the base member is provided with the magnetic pole surfaces of these cushioned member side magnets in a separated state. The pole faces of the poles face each other, and
Since the base member side magnet is provided so as to restrict the horizontal movement of the cushioned member, the repulsive force of these magnets causes the base member side magnet and the cushioned member side magnet surrounded by the base member side magnet. Do not abut each other, and the cushioned member floats above the base member without contacting any member. Therefore, the cushioning function and the vibration absorbing function of the cushioned member due to the mutual repulsive forces of the upper and lower magnetic levitation magnets are not weakened by the frictional resistance due to the sliding contact of the conventional device.

Since the cushioned member floating above the base member is provided with a cushioning function in the horizontal direction by the repulsive force between the base member side magnet and the cushioned member side magnet, the cushioned member is laterally moved. Vibration is also absorbed.

According to the magnetic levitation type cushioning body of the second aspect, the distance between the base member side magnet and the cushioned member side magnet can be adjusted.
It is possible to change the strength of the repulsive force between the base member side magnet and the cushioned member side magnet by adjusting and changing the separation distance. It becomes possible to adjust the vibration absorption capacity in the direction.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing an example of a magnetic levitation type cushion body according to the present invention, and FIG. 2 is its A line view. Further, FIG. 3 is an explanatory diagram in plan view for explaining the arrangement of the magnets. In the present embodiment, an example in which the magnetic levitation type cushion body is applied to an anti-vibration bed that is installed and installed in an emergency vehicle is given.

As shown in these figures, a vibration-proof bed 1 as a cushion body includes a floor F of a vehicle body as a base member, a bed body 2 as a cushioned member arranged on the floor F, and Bed body 2 on floor F
It is basically composed of a magnetic levitation means 3 for levitating above, and a positional deviation prevention means 4 for preventing horizontal positional deviation of the bed body 2 in a floating state by magnetic repulsive force.

The bed body 2 is provided with a pair of guide grooves 21 extending in the front-rear direction for guiding the wheels S1 of the stretcher S on the surface thereof, and the wheels S1 are fitted in the guide grooves 21 to extend the stretcher. By moving S in the longitudinal direction, as shown in FIG.
Is placed on the bed body 2 in a state in which the lateral displacement is prevented.

As shown in FIG.
As shown in FIG. 3 and FIG. 3, a support frame 22 that is located inward of the edge of the bed body 2 and has a rectangular shape in plan view is provided. The support frame 22 improves the rigidity of the bed body 2. It is supposed to be done.

As shown in FIGS. 1 and 3, the magnetic levitation means 3 includes three sets of lower magnetic levitation magnets 31 arranged in parallel in the front-rear direction on the floor F below the bed body 2.
And a pair of upper magnetic levitation magnets 32 provided on the back surface of the bed main body 2 so as to face the lower magnetic levitation magnets 31 in a portion surrounded by the support frame 22.

The above magnetic levitation magnets 31 and 32 are housed in a box-shaped magnet storage container 33 in which opposing surfaces for protecting the magnets are open, and are placed on the floor F and the support frame 22. It is installed inside. The magnetic surfaces of the lower and upper magnetic levitation magnets 31 and 32 facing each other are set so that the magnetic poles are the same, and the bed body 2 floats above the floor F by the repulsive force of the magnetic poles having the same poles. It is supposed to do.

The position shift prevention means 4 is provided in the bed body 2
A pair of first magnets (base member side magnets) 41 that are erected on the floor F in the vehicle length direction and a pair of vehicle width directions that are erected on the floor F so as to correspond to the central portion of the first magnets 41. Correspondingly, it is composed of a second magnet (cushion member side magnet) 42 provided on the back surface of the bed body 2. The first magnet 41 and the second magnet 42 are positioned so that the same poles face each other.

FIG. 4 is a sectional view taken along the line BB in FIG. 1, and illustrates the mounting state of the first magnet 41 and the second magnet 42. As shown in this figure, the first magnet 41 is on the floor F.
It is supported by the magnet supporting means 5 provided above. The magnet supporting means 5 is composed of a magnet fixing member 51 having an L-shaped cross section and a holding member 52 for holding the magnet fixing member 51 on the floor F.

The magnet fixing member 51 has a vertical portion 51a extending upward while being placed on the floor F,
It is composed of a horizontal portion 51b that is in close contact with the floor F. A box-shaped magnet accommodating portion 53 having an opening facing the second magnet 42 is provided above the vertical portion 51a. In the magnet accommodating portion 53, the first magnet 41 has a magnetic pole surface extending from the opening. It is stored in an exposed state.

The holding member 52 is composed of a fixed portion 52a fixed in close contact with the floor F, and a holding portion 52b extended to the magnet fixing member 51 side of the fixed portion 52a. Between the holding part 52b and the floor F,
A gap corresponding to the thickness of the horizontal portion 51b of the magnet fixing member 51 is formed. The horizontal portion 51b is held between the holding portion 52b and the floor F surface, and in this held state, the fixing portion 52a is bolted to the floor F and the magnet fixing member 51 is fixed on the floor F.

Then, the holding portion 52b of the holding member 52 is held.
Has a through hole 52c formed therein, and a horizontal portion 51b of the magnet fixing member 51 has a mounting hole 51c corresponding to the above through hole 52c and having a diameter larger than that of the through hole 52c. There is. Further, on the floor F, the insertion hole 52
A concentric through hole F1 corresponding to c is formed, and a vertical rod 6 is formed through the insertion hole 52c, the mounting hole 51c, and the through hole F1.

At the lower end of the vertical rod 6 is provided a retaining head 61, and a male screw is screwed on the upper portion, and a nut 63 is screwed to this male screw. ing. In addition, the mounting hole 51c of the vertical rod 6
A circular cam 62 having a diameter slightly smaller than the diameter of the mounting hole 51c is provided in an eccentric state in a portion corresponding to. And
By rotating the vertical rod 6 about its own axis, the horizontal portion 51b is moved horizontally by the eccentric rotation of the circular cam 62.

A dial 67 is fitted on the upper portion of the vertical rod 6 so as to rotate around the axial center of the rod 6. By rotating the dial 67, the circular cam 62 is eccentric. The horizontal portion 51b can be rotated to move in the horizontal direction.

A moderation spring 68 that rotates together with the dial 67 is interposed between the dial 67 and the holding portion 52b, and the insertion hole 52 is formed on the upper surface of the holding portion 52b.
A large number of moderation grooves are radially provided around c. A convex portion that bulges downward is provided at the tip of the moderation spring 68. By fitting the convex section in the moderation groove, the set rotational position of the vertical rod 6 is stably maintained. In addition, when the dial 67 is rotated, the convex portion is deformed against the biasing force of the moderation spring 68, comes off the moderation groove, and is fitted into the next moderation groove. It is designed to be used.

On the other hand, the second magnet 42 is used in the bed body 2
The magnet is housed and fixed in the box-shaped magnet housing 43 fixed to the outer wall surface of the support frame 22 with its magnetic pole surface exposed to the outside. Then, the magnetic pole surface of the first magnet 41 and the magnetic pole surface of the second magnet 42 face each other with the same poles in the horizontal direction at an interval of a distance d, and the first magnet 41 and the second magnet 42.
The distance d is maintained by the repulsive force of.

Since the vibration-proof bed 1 of the present invention is constructed as described above, the bed body 2 is magnetically levitated by the mutual repulsive force between the lower magnetic levitation magnet 31 and the upper magnetic levitation magnet 32. In this state, vibration of the bed body 2 is effectively absorbed by the magnetic repulsive force acting as a cushion.

Then, with the bed body 2 floating above the floor F, the mutual repulsive force between the first magnet 41 and the second magnet 42, which are provided so as to surround the bed body 2 from all sides, causes the bed to move. Since the main body 2 is pressed from all sides, the bed main body 2 is completely magnetically levitated on the floor F without contacting any member.
Therefore, the vibration isolation performance does not deteriorate due to the sliding resistance with other members, and an extremely good vibration isolation function can be exhibited.

Although the magnetic levitation type cushion body of the present invention has been described in the above embodiment based on an example in which the magnetic levitation type cushion body is applied to a vibration proof bed for a vehicle, the magnetic levitation type cushion body of the present invention is The present invention is not limited to use as a vibration-proof bed for vehicles, but can also be applied to a bed or sofa for ordinary furniture.

[0033]

According to the magnetic levitation type cushioning body of the first aspect of the present invention, the same poles are formed on the upper surface of the base member and the lower surface of the cushioned member arranged above the base member. Since the magnetic levitation magnets are provided so as to face each other, the cushioned member levitates on the base member due to the mutual repulsive force of these upper and lower magnetic levitation magnets,
In addition, the elastic function of the repulsive force absorbs the vertical vibration of the cushioned member.

Further, the cushioned member side magnets are provided at the four edge portions of the cushioned member side so as to be oriented in the horizontal direction, and the base member is separated from the magnetic pole surfaces of the cushioned member side magnets. Since the base member side magnets are provided so that the pole faces of the same pole face each other and the movement of the cushioned member in the horizontal direction is restricted, the repulsive force of these magnets causes the base member side magnet and the base member side magnet to move. The cushioned member side magnets surrounded by the side magnets do not abut each other, and the cushioned member floats above the base member without contacting any member. Therefore, the cushioning function of the cushioned member due to the mutual repulsive force of the upper and lower magnetic levitation magnets is not weakened by frictional resistance as in the past, and the vibration is always reliably absorbed, and the bed or sofa to which the cushioning body is applied It is convenient to make the use of the item more comfortable.

Since the cushioned member floating above the base member is provided with a cushioning function in the horizontal direction by the repulsive force between the base member side magnet and the cushioned member side magnet, the cushioned member is laterally moved. The vibration of the is surely absorbed, and it is effective in making the use of the bed or sofa to which the cushion body is applied more comfortable.

According to the magnetic levitation type cushion body of the second aspect of the present invention, since the separation distance of the base member side magnet from the cushioned member side magnet is adjustable, the separation distance is adjusted. It is possible to change the strength of the repulsive force between the base member side magnet and the cushioned member side magnet by changing it, and by adjusting this repulsive force, the horizontal vibration absorption capacity of the cushioned body can be adjusted. It becomes possible to do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a magnetic levitation type cushion body according to the present invention.

FIG. 2 is a view taken along line A in FIG.

FIG. 3 is an explanatory diagram in plan view for explaining the arrangement of magnets.

FIG. 4 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anti-vibration bed 2 Bed body 21 Guide groove 22 Support frame 3 Magnetic levitation means 31 Lower magnetic levitation magnet 32 Upper magnetic levitation magnet 33 Magnet storage container 4 Displacement prevention means 41 First magnet (base member side magnet) 42 Second magnet (magnet on cushioned member side) 43 Magnet housing portion 5 Magnet supporting means 51 Magnet fixing member 51a Vertical portion 51b Horizontal portion 51c Mounting hole 52 Holding member 52a Fixing portion 52b Holding portion 52c Insertion hole 6 Vertical rod 61 Head portion 62 Circular cam 63 Nut 67 Dial 68 Moderation spring F Floor F1 Through hole

Claims (2)

[Claims] 1. A magnetic levitation magnet is provided on an upper surface of a base member and a lower surface of a cushioned member arranged on an upper portion of the base member so that the same poles face each other. Is a magnetic levitation type cushion body that uses the repulsive force of the cushion member as a cushion, and the cushioned member side magnets are provided at four edges of the cushioned member so as to be oriented in the horizontal direction, and the base member has these magnets. The magnetic pole surface of the cushioned member side magnet is opposed to the magnetic pole surface of the same pole in a separated state, and the base member side magnet is provided so as to restrict the horizontal movement of the cushioned member. Magnetically levitated cushion body. 2. The magnetic levitation type cushion body according to claim 1, wherein a separation distance between the base member side magnet and the cushioned member side magnet is adjustable.