JPH0453714Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an air mat for a chair, and specifically relates to a technique for improving the usability and appearance.

[Background Art] Conventionally, as shown in FIGS. 7 and 8, a mat main body 3 has a plurality of expansion and contraction chambers 2a and 2b that are alternately expanded and contracted in response to air supply from an air pump 1. In the air mat for a chair, the expansion and contraction movements of the expansion and contraction chambers 2a and 2b may cause pain, and if the movement is strong, for example, a person with a disability may have their bladder stimulated and have an early urge to urinate; The load is applied to a specific part of the buttocks, and the cushioning performance is poor due to the expansion and contraction of the expansion and contraction chambers.Furthermore, due to the expansion and contraction of the expansion and contraction chambers, the mat main body 3 may slip off the chair, or conversely, the body may shift. There was a problem that it was bad. Furthermore, the mat main body 3 had peaks and valleys, giving it a poor appearance.

In addition, a type of air blowing out from an air blowing hole has been proposed for drying and dehumidification, but if air is blowing out regardless of the season (summer or winter), the air will blow out in winter and reduce the cold. There were problems such as feeling uncomfortable and easily catching a cold.

[Purpose of the invention] The present invention was made in view of the above-mentioned problems, and its purpose is to solve the above-mentioned problems through simple improvements, and to provide an air mat for chairs that is comfortable to use and has a good appearance. It is about providing.

[Disclosure of the invention] The air mat for a chair of the invention covers a mat main body 3 having a plurality of expansion and contraction chambers 2a and 2b which are alternately expanded and contracted by receiving air supply from an air pump 1 with a cover 4. A cushion material 6 is provided on the seat portion 5 of the mat body 3, and an air ejection chamber 14 having an air ejection hole 16 that receives air supply from the air pump 1 and ejects air is provided in the mat main body 3.
The cover 4 is characterized by having air permeability on one side and non-breathability on the other side, and by configuring it in this way, the above object is achieved. That is, by covering the mat main body 3 with the cover 4 and providing the cushion material 6 on the seat 5 of the cover 4, the expansion and contraction chambers 2a,
The expansion and contraction movements of 2b can be transmitted to the sitting person in a cushioned manner, suppressing the urge to urinate, and not causing concentrated loads on the buttocks, and furthermore, by cushioning the expansion and contraction movements, The mat main body 3 is provided with an air ejection chamber 14 having an air ejection hole 16 that receives air supply from the air pump 1 and ejects air. By making one side of the cover 4 breathable and the other side non-breathable, the air blown out from the air outlet 16 is blown out from the one side of the cover 4 which is breathable, thereby drying the body. , dehumidification is performed, and in winter, the cover is turned upside down to prevent air from blowing out in certain parts of the cover as it is non-breathable, so that the air blowing out does not make you feel cold.

Embodiments of the present invention will be described in detail below based on the drawings.

The mat main body 3 is composed of a flexible central sheet 7, an upper sheet 8, and a lower sheet 9, which are made of synthetic resin sheets. The upper sheet 8 and the center sheet 7 are welded along the welding line 10 shown by the solid line in FIG. 1b, and a first expansion/contraction chamber is formed which branches in the upper part of FIG. 1b and has a substantially comb-like shape. 2a and a second expansion/contraction chamber 2b which branches downward and has a substantially comb-like shape. A first inlet 11 for supplying and discharging air is led out to the first expansion and contraction chamber 2a, and a second inlet 12 for supplying and discharging air is led out to the second expansion and contraction chamber 2b. . Such first and second suction ports 11,
12 is connected to the air pump 1 through a first solenoid valve _V1 and a second solenoid valve _V2 built into the case.
As a result, the first and second expansion and contraction chambers _2a , 2 are opened and closed alternately by the first and second solenoid valves _V1V2 .
By alternately inflating and deflating b, the body weight support position can be changed.

The center sheet 7 and the lower sheet 9 are welded together along the welding line 13 shown by the chain line in FIG. It has been done. Air blowing chamber 14
A large number of air ejection holes 16 are formed in the air. A third solenoid valve is installed at the third intake port 15 of the air ejection chamber 14.
It is connected to the air pump 1 through V ₃ , and receives air from the air pump 1 and blows out air from the air outlet 16 to dry the body, etc. . The structure of the mat main body 3 thus structured can be modified in various ways.

The mat main body 3 is covered with a bag-like cover 4.

The cover 4 can be opened and closed using a fastener 17. A cushion material 6 is provided on the front and back surfaces of the cover 4 including the seat portion 5. Therefore, the seat 5 of the cover 4 and the cushioning materials 6, 6 on the lower surface cushion and transmit the expansion and contraction movements of the expansion and contraction chambers 2a, 2b to the sitting person, thereby suppressing the urge to urinate and providing relief to the buttocks. This does not cause a concentrated load on the mat, and also dampens the expansion and contraction movements, thereby suppressing slippage of the mat main body 3 and displacement of the body. By covering the mat main body 3 with a cover 4, the peaks and valleys are hidden and the appearance is enhanced.

The material of the cushion material 6 may be cloth-like, but it is made to have air permeability so that air is ejected from the air ejection holes 14 to produce a drying effect. The hardness and thickness of the material may be 10 mm if it is made of urethane foam or the like and the hardness is about that of a typical pine tress sponge. One side of the surface of the cover 4 is breathable, allowing air from the air outlet 16 to pass therethrough for drying (dehumidification).
It is designed to be effective. The other surface of the cover 4 is non-ventilated, so that when the air blows out in winter and the user feels cold, the cover 4 can be turned upside down to prevent the air from blowing out.
When the air jet is shut off in this way, the drying and dehumidifying effect is lost, but when the air jet feels cold, such as in winter, there is no sweating and the bed sore prevention effect can be achieved even without the dehumidifying effect.

In addition, the cover 4 is made of a material with a large grain to prevent the body from slipping off from the mat main body 3 through the cover 4.
The mat main body 3 is prevented from shifting from the chair 18 via the cover 4. By extending the string 19 from the rear and tying it to the chair 18, positional shift is further prevented and the usability is improved. The fastener 17 provided at the opening of the bag-like cover 4 is positioned at the side or rear to prevent bedsores from coming into contact with the lower thighs of the person sitting.

The first and second suction ports 11 and 12 of the expansion and contraction chambers 2a and 2b of the mat main body 3 are provided with check valves 20 as shown in FIGS. When removed from the second suction ports 11 and 12, the check valve 20 is closed by the pressure of the air inside the expansion and contraction chambers 2a and 2b, as shown in FIG. Even when the user goes to the toilet, etc., the mat main body 3 is inflated, so that the user does not feel uncomfortable using it and does not develop bedsores. When the hose 21 is connected to the suction ports 11 and 12 as shown in FIG. 5, the check valve 20 is opened and a seal is created by the O-ring 22, allowing air to be supplied.

[Effects of the invention] In summary, the present invention covers the mat main body, which has a plurality of expansion and contraction chambers that are alternately expanded and contracted by receiving air supply from an air pump, with a cover, and provides a cushion material on the seat of the cover. Because of this, the expansion and contraction movement of the expansion and contraction chamber can be transmitted to the sitting person in a cushioned manner, suppressing the urge to urinate, and not causing concentrated load on the buttocks. Since the mat body is cushioned, slipping of the mat body and shifting of the body can be suppressed.Moreover, the mat body is provided with an air jet chamber having an air jet hole that receives air supply from the air pump and jets out air. Since one side is breathable and the other side is non-breathable, the air ejected from the air outlet is ejected from one side of the breathable cover, drying the body and dehumidifying it. , and in winter, the cover can be turned upside down to prevent air from blowing out in a certain part of the cover as it is non-ventilated, so that the air blowing out does not make the user feel cold.

[Brief explanation of the drawing]

Fig. 1a is a sectional view of the mat main body according to an embodiment of the present invention, Fig. 1b is a schematic plan view of the same, Fig. 2 is a perspective view of the same, and Fig. 3 is the same as the above in use with the cover removed. FIG. 4 is an explanatory diagram showing the connection state between the air pump and the mat main body, and FIG.
The figure is an enlarged sectional view of the same as above after connection, Fig. 6 is an enlarged sectional view of same as above before connection, Fig. 7 is a partially broken perspective view of the conventional example, and Fig. 8 is a schematic sectional view of the mat main body of same as above. 1 is an air pump, 2a and 2b are expansion and contraction chambers, 3 is a mat main body, 4 is a cover, 5 is a seat, and 6 is a cushion material.

Claims (1)

[Scope of utility model registration request] The main body of the mat, which has a plurality of expansion and contraction chambers that are alternately expanded and contracted by receiving air supply from the air pump, is covered with a cover, and a cushion material is provided on the seat of the cover, so that the main body of the mat has a plurality of expansion and contraction chambers that are alternately expanded and contracted by receiving air supply from the air pump. This air mat for a chair is provided with an air ejection chamber having an air ejection hole for receiving and ejecting air, and has a cover having air permeability on one side and non-air permeability on the other side.