JP2010004967A - Pelvis cushion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pelvis cushion which can be simply used without worrying about the body shape of a user, without making the structure complicated, and which can effectively compensate the part between the buttocks and the hip and promote blood circulation accordingly. <P>SOLUTION: Both side parts and back part of the top surface of a cushion member 4 positioned at the seating part of a seater are formed on tilted faces having decreasing gradients facing the center part. Airbags 11, 12, and 13 are respectively arranged along these tilted faces. By injecting air into these airbags 11, 12, and 13, a part of a surface cushion member 6 is bulged as if the buttocks of the seater are tightened from the side and the back. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pelvic cushion that exhibits a function of correcting a lumbar vertebra and a pelvis.

  In general, when a person sits on a chair and performs work, etc., if the sitting posture is poor, an irregular force acts on the waist and pelvis, which increases fatigue, and if this state lasts for a long time, the waist and pelvis May cause abnormalities such as low back pain.

  For this reason, in Patent Document 1, a cushion that can be inflated with fluid is arranged on both sides of the seating portion of the chair, the cushion is inflated by a pressurizing means such as a pump, and the person seated on the chair (utilization) A pelvic support chair has been proposed in which the pelvic region is clamped from both sides of the person's lumbar region with cushions to suppress the spread of the pelvic region and prevent back pain, pelvis, spinal cord and the like. Further, in Patent Document 2, the pelvis of the human body is moved by tilting the position adjustment elements provided on the sides alternately in the left-right direction around the body center position of the person sitting on the seat of the chair. Seats designed to promote blood circulation have been proposed.

JP 2002-360376 A Special table 2002-507900 gazette

  However, in the pelvic support chair proposed by Patent Document 1, in a chair composed of a backrest part, a seating part, an elbow rest part, etc., a cushion is arranged on the inner surface of the elbow rest part, and the user is seated by this cushion. Since the hips are wrapped and sandwiched from the left and right sides of the hips, it is required to match the body shape of the user in order to obtain the effect. For this reason, in the case of a person with a large physique, a cramped posture is forced. On the contrary, in the case of a person with a small physique, there is a problem that the effect of pinching is poor and not effective. Further, there is a problem that the apparatus configuration becomes large as a whole and becomes expensive because it is structurally complicated.

  On the other hand, the tilting seat proposed by Patent Document 2 requires at least two position adjusting elements (devices that cause vertical movement) for tilting, and the position adjusting elements are alternately moved up and down. Therefore, this is also structurally complicated and expensive. In addition, since the seated portion of the seated user is alternately tilted by the operation of the position adjusting element, there is a problem in uncomfortable feeling and relieving tension.

  The present invention has been made in view of the above-mentioned problems. The structure is not complicated, and can be used easily without being constrained by the body shape of the user. It is an object of the present invention to provide a pelvic cushion capable of effectively promoting.

In order to achieve the above object, the pelvic cushion according to the present invention comprises:
A pelvis comprising: a seat frame; a back frame that can be raised with respect to the seat frame; a cushion member that is arranged to cover the seat frame and the back frame; and a surface cushion member that wraps the cushion member A cushion,
Both side portions and the rear portion of the upper surface of the cushion member located at the seating portion of the seated person are formed on the inclined surface having a downward slope toward the central portion, and air bags are arranged at positions along these inclined surfaces, respectively. A part of the surface cushion member is inflated by injecting air into the air bag, and the seated person's buttocks are tightened from the side and the back (first). invention).

  In the present invention, the seat frame is erected so as to be along the back of the seated person via a bent portion at a base end portion of the first frame part positioned at the seated part of the seated person and the first frame part. It is preferable that the back frame is attached to an upper end portion of the second frame portion via a connector so as to be able to be raised and lowered (second invention).

  Here, the back frame can be held with respect to the seat frame in the standing position and the folded position, and the pelvic cushion may be used as a pillow in the folded position (third invention). ).

  In the present invention, when a user (sitting person) sits on the cushion member covering the seat frame so as to apply his / her buttock, both side portions and the rear portion of the upper surface of the cushion member are inclined downward toward the center portion. Since it is formed on the inclined surface, the left and right sides of the occupant's buttocks are received by the inclined surfaces on both sides, and the rear portion is received on the inclined surface on the back frame side. At this time, the seated person's buttocks (including the coccyx side) are supported at three points, but by contacting the left and right sides and the inclined surface of the rear part along the inclined surfaces by the component force of the weight acting vertically Will slide toward the center. In this state, when air is injected into the air bag, the surface cushion members on both sides and the rear are inflated, and the occupant's buttocks are tightened from the side and back. It will receive the action force pinched from the direction. At this time, on the side of the coccyx part, an action force that pushes down the buttocks to the center part is generated by the action of the expansion of the rear air bag, and functions to maintain the seating posture normally and stably. In addition, since each air bag is provided with cushioning properties, the buttocks are received softly and do not give a sense of discomfort to the seated person.

  According to the present invention, when the seated person sits down, the upper half of the thigh is sandwiched from both sides and the back using the body weight as it is, so that the muscles around the pelvis can be tightened without difficulty. In this way, the function of promoting blood circulation can be exhibited, and the feeling of fatigue can be eliminated. In addition, it can be used to correct the posture of the waist. In addition, it is configured to receive the buttocks when the seated person is seated, so it can be used regardless of the seated person's physique, and thus can be used by people of different physiques with a single model There is. Moreover, an extremely simple structure can be achieved without complicating the structure.

  According to the configuration of the second and third inventions, this pelvic cushion can be used as a pillow in a state where the back frame is folded, and the convenience can be further improved.

  Next, specific embodiments of the pelvic cushion according to the present invention will be described with reference to the drawings.

  FIG. 1 is an overall perspective view of a pelvic cushion according to an embodiment of the present invention. FIG. 2 shows a frame configuration diagram of the pelvic cushion, and FIG. 3 shows a partially broken plan view of the seating portion (a), its AA line cross-sectional view (b), and BB line cross-sectional view (c). Are shown respectively.

  The pelvic cushion 1 according to the present embodiment has a seat frame 2 and a back frame 3 formed into a frame shape by bending a metal pipe material, and the frames 2 and 3 are cushion members (for example, urethane foam). And the like, and the outer peripheral surfaces of the cushion members 4 and 5 are wrapped with a surface cushion member (resin foam material such as sponge) 6. The outer peripheral surface is formed by covering with a mesh-like cover member 7.

  As shown in FIG. 2, the seat frame 2 has a substantially U-shaped first frame portion 2a located at the seating portion of the seated person and a bent portion 2b at the base end portion of the first frame portion 2a. A second frame portion 2c erected integrally along the back of the seated person, and a substantially U-shaped reinforcing frame weld-joined to the base end portion of the first frame portion 2a so as to be positioned on the seated portion It is comprised from the part 2d. A connecting tool 8 for adjusting the angle is attached to the upper end of the second frame part 2c, and the base part of the substantially U-shaped back frame 3 can be rotated (can be lifted) by a pivot 9 to the connecting tool 8. It is connected. Here, the connecting tool 8 is composed of two plate bodies facing each other, and by forming a narrow gap between the upper end portion and the lower end portion of each plate body, two positions of an upright position and a folding position of the back frame 3 are provided. Thus, the back frame 3 can be held with respect to the seat frame 2. The connecting tool 8 is not limited to the one having the above-described structure, and a connecting tool that stops the back frame 3 at a predetermined inclination angle using a ratchet gear having a known structure may be used.

  As shown in FIG. 3, the cushion member 4 covering the first frame portion 2a and the reinforcing frame portion 2d of the seat frame 2 includes a rectangular lower cushion member 4a made of a relatively soft resin foam material, The upper cushion member 4a is fixed to both side portions and the rear portion of the upper surface of the lower cushion member 4a, and is composed of an upper cushion member 4b made of a resin foam material harder than the lower cushion member 4a. Here, as for the upper cushion member 4b, the both sides and rear part in the upper surface are formed in the inclined surface of a downward slope toward the center part of a seating part. The lower cushion member 4a has a recess 10 formed on the bottom surface, and the first frame portion 2a and the reinforcing frame portion 2d of the seat frame 2 are arranged so as to be embedded in the recess 10.

  On the other hand, the cushion member 5 that covers the second frame portion 2c and the back frame 3 of the seat frame 2 is formed of a relatively soft resin foam material, and has two rectangular resin foams of the same shape and size. The second frame portion 2c and the back frame 3 are arranged so as to sandwich the material.

  In the seat portion, air bags 11, 12, and 13 are arranged at positions along the inclined surfaces on both sides and the rear of the upper cushion member 4b. The left and right air bags 11 and 12 have connecting portions 11a and 12a on the lower surface, respectively, and the rear air bag 13 has two connecting portions 13a and 13b on the lower surface, and these connecting portions 11a, 12a, 13a and 13b. The part except for is sealed and formed into a bag shape. A connecting tube 14 made of synthetic resin for sending air is connected to each connecting portion 11a, 12a, 13a, 13b. The connection tube 14 includes a first tube member 14a, a second tube member 14b, a third tube member 14c, and a fourth tube member 14d. A balloon type is provided at one end of the first tube member 14a. An air pump 15 is connected. Further, the other end of the first tube member 14a, each one end of the second tube member 14b and the third tube member 14c are connected to each connection port of the T-shaped joint 16, and the second tube The other end of the member 14b is connected to the connecting portion 11a of the air bladder 11, and the other end of the third tube member 14c is connected to the connecting portion 13a of the air bladder 13. Furthermore, one end of the fourth tube member 14d is connected to the connecting portion 13b of the air bladder 13, and the other end is connected to the connecting portion 12a of the air bladder 12. Note that an air discharge valve 17 is provided at a connection portion of the first tube member 14a with the air pump 15, and an air introduction port 18 having a check valve is provided at one end portion of the air pump 15.

  Next, the usage aspect of the pelvic cushion 1 of this embodiment is demonstrated, referring FIG. The pelvic cushion 1 is set so that the seating portion (the seat portion frame 2 and the cushion member 4) is placed on a flat floor surface or the like, and the back frame 3 is in an upright state with respect to the seat portion frame 2. The standing state of the back frame 3 is such that when the upper part of the cushion member 5 covering the back frame 3 is moved in the direction of being tilted outward by grasping from the outside by the hand, the back frame 3 is rotated at the position of the connector 8. Tilt.

  Thus, after setting the back frame 3 to the upright position, the seated person (user) A sits down on the cushion member 4 covering the seat frame 2. Then, the side of the buttocks B of the occupant A is received by the inclined surfaces on both sides of the upper cushion member 4b, the rear is received by the inclined surfaces of the rear of the upper cushion member 4b, and the back of the occupant A is the back. The cushion member 5 covering the frame 3 is received and seated.

  In this state, when the seated person A holds and operates the air pump 15, the air is injected into the three air bags 11, 12, 13, and the air bags 11, 12, 13 are inflated, and the air cushions 11, 12, 13 are inflated. As a result, a part of the cover member 7 swells.

  At this time, the collar portion B received by the bulged portion has an inclined surface with a downward slope, in particular, the upper surface of the upper cushion member 4b which is the support portion of the air bags 11 and 12 on both side portions toward the central portion of the seat portion. Since it is formed, an action force that moves the collar part B to the center part of the seat part works while maintaining cushioning properties. As a result, the received buttocks B are sandwiched by the repulsive force due to the elastic deformation of the air bags 11 and 12, and the muscles from the buttocks B to the lumbar region function so as to be drawn toward the pelvis. As a result, blood circulation is promoted, and by sitting, the effect of tightening and adjusting the pelvic part and its periphery can be obtained. Further, the rear part of the buttock B is also repelled by the elastic deformation of the air bag 13 and functions to push the received muscles of the buttock B toward the front of the body to lift the coccyx part at the same time as the support stability at the time of sitting. Thus, the function of correcting the sitting posture (lumbar vertebrae) is exerted, and the effect of tightening the waist is obtained.

  Further, in the present embodiment, the brim portion B is supported at three points by the air bags 11, 12, 13 disposed on both sides and the rear portion, and the upper surfaces of both sides and the rear portion of the cushion member 4 are the central portion of the seat portion. Since it is formed on an inclined surface having a downward slope toward the surface, even if the physique of the seated person is different, it is not constrained in the width direction, and the above-described functions can be exhibited. Therefore, it is not necessary to selectively use a size and shape corresponding to the physique. In addition, the pelvic cushion can have a very simple structure.

  Further, according to the pelvic cushion 1 of the present embodiment, as shown in FIG. 5, if the back frame 3 is folded forward and held in this folded position, the cushion member covers the back frame 3. The pelvic cushion 1 can be used as a pillow by placing the head on the back of the portion 5 (backrest portion). In this case, if the upper end central portion 5a of the cushion member 5 is formed in a concave shape, the user's neck can be placed on the concave central portion 5a, which is comfortable.

  In the above embodiment, the description has been given of the flat seat portion in which the back portion is disposed so as to be able to be raised and lowered, but it is also possible to configure the seat portion in place of the seat portion of a normal chair. Needless to say, it belongs to the technical scope of the present invention.

1 is an overall perspective view of a pelvic cushion according to an embodiment of the present invention. Pelvic cushion frame configuration diagram Partially broken plan view of seating portion (a), cross-sectional view taken along line AA (b), and cross-sectional view taken along line BB (c) It is a figure showing a use aspect, (a) is the aspect seen from the back surface, (b) is the figure showing the aspect seen from the side. Perspective view (a) and frame configuration diagram showing pelvic cushion in folding position

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pelvic cushion 2 Seat frame 3 Back frame 4,5 Cushion member 6 Surface layer cushion member 7 Cover member 8 Connector 11, 12, 13 Air bag 14 Connection tube 15 Air pump

Claims (3)

A pelvis comprising: a seat frame; a back frame that can be raised with respect to the seat frame; a cushion member that is arranged to cover the seat frame and the back frame; and a surface cushion member that wraps the cushion member A cushion,
Both side portions and the rear portion of the upper surface of the cushion member located at the seating portion of the seated person are formed on the inclined surface having a downward slope toward the central portion, and air bags are arranged at positions along these inclined surfaces, respectively. A pelvic cushion characterized in that a part of the surface cushion member is bulged by injecting air into an air bag, and a seated person's buttocks are tightened from the side and rear.   The seat frame includes a first frame portion positioned at a seating portion of the seated person, and a second frame that is erected along the back portion of the seated person via a bent portion at a base end portion of the first frame portion. The pelvic cushion according to claim 1, wherein the back frame is attached to an upper end portion of the second frame portion via a connector so as to be able to rise and fall.   The pelvis cushion according to claim 2, wherein the back frame can be held with respect to the seat frame at a standing position and a folded position, and the pelvic cushion is used as a pillow at the folded position.

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