JP3046399U - Cushion for regular seat - Google Patents

Abstract

(57) [Summary] [Problem] A seat cushion for sitting on the seat which is highly effective in preventing pains such as numbness and ankle pain when sitting straight, and which has almost the same appearance when worn when using a normal seat cushion. provide. SOLUTION: This is a seat cushion for straight sitting for reducing pain when sitting straight, and a supporting portion for supporting a buttocks at least at a position higher than an ankle, and a knee to an ankle in a state where a toe portion is lower than an ankle. And a futon portion for supporting the shin.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cushion, and more particularly, to a cushion for a regular seat for preventing or reducing numbness of a leg when the user sits straight.

[0002]

[Prior art]

 A conventional cushion is a bag made of two pieces of cloth with a square main surface stitched together and filled with soft material such as cotton. If you lay it on the floor, you can sit on the floor (including the tatami mat). Since the leg and the leg do not directly contact, it is possible to prevent the occurrence of pain due to the rubbing of the two. However, when sitting on a conventional cushion for a long period of time, weight was added to the legs and blood flow in the legs deteriorated, causing numbness in the legs. For this reason, they had to withstand numbness of their legs or, if they could not withstand, sedentary sitting. In recent years, some instruments for preventing such numbness have been developed and proposed. In addition, when sitting straight, the shin and the instep were held in a straight line, causing pain in the ankles and increasing pain in combination with numbness in the first half.

[0003]

[Problems to be solved by the invention]

 As described above, usually, when it is necessary to sit straight for a long time, it is necessary to endure strong numbness of the legs and the like, and thus long sitting straight is extremely painful. In addition, since numbness etc. does not recover immediately after sitting down, if you try to get up immediately after sitting down, you may fall down, and in severe cases, you may be broken. In order to avoid such problems, it was necessary to be unseated or frequently interrupted, and this was often inconvenient. On the other hand, devices for preventing numbness, which have been proposed in recent years, are not always satisfactory because they have a low effect of preventing numbness and have a problem in appearance when the device is mounted. In addition, these instruments require that the shin and instep be straight and straight (in other words, the same as when sitting straight without instruments), and these instruments must be seated straight. Use does not improve ankle pain.

Accordingly, the present invention has a high effect of preventing pain that occurs when sitting straight, such as numbness and ankle pain, and furthermore, the appearance when worn is almost the same as when a normal cushion is used. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the seat cushion according to the present invention includes a support portion for supporting the buttocks, a futon portion for supporting the shin so that the shin and the instep are not in a straight line, It has. That is, the present invention is a seat cushion for straight sitting for reducing pain when sitting straight, in a state where a supporting portion for supporting the buttocks at least at a position higher than the ankle and a toe portion lower than the ankle. And a futon portion for supporting the shin from the knee to the ankle.

[0006] The seat cushion of the present invention is a cushion for reducing pain when sitting straight. Here, `` pain when sitting straight '' refers to numbness of the legs and pain at the ankle, which occur mainly when sitting straight, and these are extremely reduced by sitting straight using the seat cushion of the present invention. .

The seat cushion of the present invention has a support portion for supporting the buttocks. The support portion supports the seated person's buttocks to reduce weight on the seated person's legs. In a sitting position, the buttocks are directly above the ankles, so the support must support the buttocks at least above the ankles. The greater the weight supported by the supporting portion, the smaller the weight applied to the legs, and the greater the effect of preventing numbness. In general, the higher the position where the support part supports the buttocks, the greater the weight supported by the support part, so that the weight applied to the legs is reduced and the effect of preventing numbness is increased. Therefore, it is desirable to raise the supporting position of the buttocks in order to increase the effect of preventing numbness. However, if it is too high, the position of the upper body above the buttocks supported, especially the head, will be higher, and It is desirable to determine the support position of the buttocks in such a range that they can be compatible with each other, since this may cause a problem in the appearance of the hip. In general, it is preferable that the supporting portion supports the buttocks at a position about 3 to 15 cm higher than the position of the buttocks when sitting normally (when not using the cushion of the present invention).

The portion of the support portion where the buttocks are placed (the portion in contact with the buttocks) is not so comfortable if it is too small, but conversely if it is larger than the buttocks, the appearance when sitting straight is not good, so that it is slightly more than the buttocks. The size is preferably as small as possible. For example, a rectangular shape having a long side of about 20 cm and a short side of about 10 cm, or an elliptical shape having a long axis of about 20 cm and a short axis of about 10 cm is preferable. The thickness of the part where the buttocks are placed should be such that the weight of the material forming it can support the weight sufficiently. However, if the thickness is too large, the appearance is not good. It is preferably about 5 cm. The material forming the support portion is not particularly limited, and may be any material. Examples thereof include timber, resin, and metal. It is preferable to use timber for comfort, but it is preferable to use resin for the sake of economy and mass production. If the support portion is covered with the same cover as the futon portion, the support portion becomes less noticeable, which is preferable in appearance.

[0009] The seat cushion of the present invention has a futon portion for supporting the shin from the knee to the ankle. The futon portion supports the facing shin, similar to a conventional cushion. On the other hand, the facing shin and the instep are bent so as not to cause pain in the ankle caused by holding the facing shin and the instep in a straight state when sitting straight. It is preferable to support the facing shin in a state (usually close to the positional relationship formed between the facing shin and the instep when standing upright). In order for the shin and the instep to be bent when sitting straight, the futon should support the shin when the toe is lower than the ankle. The lower of the toe portion than the ankle may be determined so as to be in a state close to the positional relationship formed when the opposite shin and the instep normally stand upright. It may be about 20 cm. Further, it is desirable that the portion of the futon portion in contact with the opposite shin is formed of a soft material such as sponge or cotton in order to improve sitting comfort. The material forming the futon portion of the other portion is not particularly limited, and may be any of commonly used known materials, and examples thereof include cotton and sponge. In particular, it is preferable to use a sponge for softness, strength, weight reduction, and the like. The upper surface of the futon portion may have any shape, for example, a rectangle such as a rectangle, a square, a trapezoid, or a parallelogram, a circle, an ellipse, or the like. In addition, it is preferable to cover the seat cushion to prevent dirt on the seat cushion.

[0010] Any method of supporting the shin facing the futon portion in a state where the facing shin and the instep are bent, that is, in a state where the toe portion is lower than the ankle, may be any method. The rear end may support the ankle and the toe may extend outside the futon. By doing so, it is not necessary to take any special means for supporting the ankle or toe portion, and it is possible to easily and inexpensively manufacture the seat cushion, and the appearance is not greatly different from the conventional cushion, which is preferable. The term "rear" in the present invention refers to the rear side of the seated person, that is, the direction of the toe of the seated person. For this configuration, it is preferable that the supporting portion for supporting the buttocks is located near the rear end portion of the futon portion, and that the thickness at the rear end portion of the upper surface of the futon portion is somewhat thick. Since the buttocks and ankles of a straight seated person are close to each other, the supporting part that supports the buttocks and the back end of the upper surface of the futon that supports the ankles must be close, and the toe part is lower than the ankle. This is because the rear end portion of the upper surface of the futon portion needs to have a sufficient height from the floor surface in order to achieve this. The thickness of the rear end of the upper surface of the futon is not particularly limited as long as the shin and the instep are bent sufficiently, but if it is too thick, it is not comfortable to sit on. For example, about 3 to 20 cm is preferable.

[0011] Further, a method of supporting the shin facing the futon portion in a state where the toe portion is lower than the ankle is performed by, for example, providing a concave portion for storing the toe portion on the upper surface of the futon portion. Is also good. That is, the ankle is supported by the upper surface of the futon portion, and the toe portion is accommodated in the concave portion formed on the upper surface of the futon portion, so that the toe portion can be lower than the ankle. In order for the toe portion to be sufficiently lower than the ankle, the depth of the concave portion must be sufficiently deep, for example, the depth can be 3 to 20 cm. The thickness of the futon portion must be sufficient to form the concave portion, and it is preferable that the thickness of the futon portion is 0 to 20 cm added to the depth of the concave portion. The “recess” here includes not only a so-called depression on the upper surface of the futon portion, but also an opening communicating the upper surface of the futon and the lower surface (the surface in contact with the floor surface). As described above, the buttocks and ankles of the seated person are close to each other, and in this case, the supporting portion for supporting the buttocks needs to be located near the concave portion.

[0012] When the seat cushion of the present invention is stored, since the supporting portion for supporting the buttocks protrudes from the futon portion and is higher, it is difficult to stack and store the seat cushion of the present invention. Inconvenient. Therefore, it is preferable to make the supporting portion detachable from the futon portion. In this way, when storing a large number of the cushions for a regular seat according to the present invention, the support portion can be removed and only the futon portion can be stacked and stored. Since the removed support portion is smaller than the entire seat cushion, it can be easily stored. Also, if the support portion is made detachable in this way, only the futon portion can be used as a normal cushion, which is extremely convenient, and it is possible to select whether or not to attach the support portion according to each seater's request. be able to.

[0013] In the case where the support portion is made detachable, if the support portion is easily detached from the futon portion when it is not expected, the support portion may fall off when the seat cushion is transported, or the support portion may be abruptly displaced when sitting straight. It is preferable that the supporting portion and the futon portion are fitted to each other in order to prevent this.

[0014] When the support portion and the futon portion are fitted to each other, the support portion has a portion to be fitted to the futon portion. The part to be fitted to the futon part may have any shape as long as it is securely fitted and fixed to the futon part. For example, the supporting portion may include an upper plate for placing the buttocks, a lower plate that supports the supporting portion in contact with the floor, and a connecting member that connects the upper plate and the lower plate. In this case, the horizontal cross-sectional area of the lower plate (meaning the cross-sectional area when cut along a plane perpendicular to the vertical direction) is generally larger than the horizontal cross-sectional area of the connecting member. And the futon portion can be fitted to each other. On the other hand, a portion of the futon portion that fits with the support portion (hereinafter, referred to as a “fitting recess”) has a shape corresponding to the shape of the portion of the support portion that fits with the futon portion. For example, in the case where the support portion has the upper surface plate, the lower surface plate, and the connecting member, the fitting recess can exactly accommodate the lower surface plate and at least a part of the connecting member. It is formed in the shape that can be done and is formed at the rear end of the futon part. With the configuration described above, the support portion and the fitting concave portion are fitted well, and the support portion and the futon portion are fixed to each other.

[0015] Further, a cushioning material may be interposed between the support portion and the buttocks to improve sitting comfort. The material for forming the cushion material is not particularly limited as long as it is an elastic material, and examples thereof include cotton and sponge. Further, in order to make the cushion material inconspicuous, it is preferable that the size and shape of the cushion material are the same as those of the supporting portion in contact with the buttocks, and it is preferable that the cushion material be covered with the same cover as the futon portion.

[0016]

[Embodiment of the invention]

 Embodiments of the present invention will be described in detail with reference to the drawings based on examples, but the present invention is not limited thereto.

FIG. 1 is a perspective view of a seat cushion according to an embodiment of the present invention. FIG. 1 shows the seat cushion 1 for normal sitting viewed from behind. The seat cushion 1 for a regular seat is composed of a futon portion 2 and a support portion 4. The support portion 4 is composed of an upper plate 5, a connecting member 6, and a lower plate 7. The upper plate 5 can be seen because it is protruded above the futon portion 2, but since the connecting member 6 and the lower plate 7 are housed in the fitting recess 3 of the futon portion 2, Everything cannot be seen from the outside. The horizontal cross-sectional area of the support portion 4 is smallest at the portion of the connecting member 6, and the portion of the upper surface plate 5 and the lower surface plate 7 is larger than the portion of the connecting member 6. D).) For this reason, the support portion 4 can be fitted well with the fitting concave portion 3. On the other hand, the seat cushion 1 for a regular seat has a fitting recess 3 at the rear end of the futon portion 2, and a support portion 4 is fitted into the fitting recess 3. The support portion 4 can be easily removed from the futon portion 2 by being pulled toward the front in the figure. Conversely, the removed support portion 4 can be easily pushed into the futon portion 2 by being pushed into the fitting recess 3. The support portion 4 and the futon portion 2 can be attached to each other, and are configured to be detachable from each other. The fitting recess 3 is formed in a shape corresponding to the shape of the connecting member 6 and the lower plate 7 for fitting with the support portion 4. In this state, the seated person can sit straight with the buttocks on the upper plate 5 facing the other side in the figure. At this time, the ankle is supported by the upper rear end portions 2a and 2b of the futon portion 2, and the toe portion is present outside the futon portion 2 (in the figure, the near side of the futon portion 2).

FIG. 2 is a perspective view of the futon portion 2 used in the seat cushion of the present invention shown in FIG. 1 according to one embodiment of the present invention. The futon portion 2 has a fitting recess 3 at the rear end, and the support portion 4 can be fitted into the fitting recess 3. The fitting recess 3 has a shape corresponding to the support portion 4 for fitting with the support portion 4. The shape of the futon portion 2 is square in this embodiment, but may be circular or the like. Furthermore, in the present embodiment, the upper surface side edge portion of the futon portion 2 is rounded to have a corner, but the corner may be left.

FIG. 3 is a perspective view of the support portion 4 used in the seat cushion of the present invention shown in FIG. 1 according to the embodiment of the present invention. FIG. 3 shows a state of the front seat cushion viewed from the front side, that is, a state viewed from the side opposite to that shown in FIG. The support portion 4 includes an upper plate 5, a connecting member 6, and a lower plate 7. The buttocks can be put on the upper surface plate 5 and used. The shape of the upper surface plate 5 is rectangular in this embodiment, but may be elliptical or the like. For the stability of the support portion 4, the lower plate 7 is preferably equal to or larger than the size of the upper plate 5. In this embodiment, the upper plate 5 and the lower plate 7 are formed to have the same size. ing.

FIG. 4 is a perspective view of the cushion material 8. Although the cushioning material 8 is not used in FIG. 1, the cushioning material 8 can be used to improve the feel of the support portion 4 to the buttocks. Since the cushioning material 8 is interposed between the support portion 4 and the buttocks and is used to improve sitting comfort, it is preferable that the cushioning material 8 is formed of a soft material such as sponge or cotton. In the present embodiment, the sponge is used. Is formed. The cushion material 8 is formed in the same size and shape as the upper surface plate 5. For this reason, when the cushion material 8 is arranged on the upper portion of the upper surface plate 5, both of them overlap exactly.

FIG. 5 is a perspective view showing a state in which the seat is seated using the seat cushion of the embodiment of the present invention shown in FIG. A cushioning material 8 is arranged on the upper surface plate 5 of the support portion 4 and the buttock is placed on the cushioning material 8 to sit straight, but the cushioning material 8 is not used and the cushioning material 8 is used. You may directly sit on your hips. The ankle portion is supported by the upper rear end portions 2 a and 2 b of the futon portion 2, and the toe portion exists outside the futon portion 2.

FIG. 6 is a right side view showing a state in which the seat is seated using the seat cushion of the embodiment of the present invention shown in FIG. A cushion material 8 is arranged on the upper surface plate 5, and the buttocks are placed on the cushion material 8 to sit straight, but the buttocks are directly placed on the upper surface plate 5 without using the cushion material 8. May be. An ankle portion 10 is supported by the upper rear end portion 2b of the futon portion 2, and a toe portion 12 is present outside and rearward of the futon portion 2. Thus, it can be seen that the futon portion 2 supports the facing shin 14 in a state where the toe portion 12 is lower than the ankle portion 10, that is, in a state where the facing shin 14 and the instep 16 are bent.

FIG. 7 is a top view showing a seat cushion according to another embodiment of the present invention. The sitting cushion 1a has a futon portion 2c and a support portion 4a. The support portion 4a projects approximately 8 cm in a columnar shape from the upper surface of the futon portion 2c, and is formed of a hard sponge. Also, concave portions 21a and 21b for accommodating the toes are formed on the left and right sides of the support portion 4a.

FIG. 8 shows a cross section XX of the cushion for the normal seat shown in FIG. The seat cushion 1a for the regular seat has a futon portion 2c and a support portion 4a. The support portion 4a exists so as to penetrate from the upper surface of the futon portion 2c to the lower surface (the surface in contact with the floor surface). An opening 4c larger than the upper portion 4b of the support portion 4a is formed below the support portion 4a. For this reason, when stacking and storing the seat cushion 1a, the upper part 4b of the seat cushion 1a is stored in the opening 4c of the seat cushion 1a stacked on the upper side. 1a can be stacked vertically, which is convenient. Also, since the support portion 4a is attached to the futon portion 2c by fitting, the support portion 4a can be easily pulled down in the drawing. On the other hand, concave portions 21a, 21b for accommodating the toes are formed on the left and right sides of the support portion 4a from the upper surface of the futon portion 2c. In order to use the seat cushion shown in FIGS. 7 and 8 to sit straight, first, the buttocks are supported on the upper part 4b of the support part 4a (perched on the upper part 4b), and the left and right toes are placed in the concave part 21a and the concave part. 21b. By doing so, a part of the weight is supported by the support portion 4a, so that the weight applied to the legs is reduced to prevent or reduce the occurrence of numbness, and the toe portion is lower than the ankle portion. Since the futon portion 2c supports the facing shin when the facing shin and the instep are bent, pain at the ankle can be prevented or reduced.

[0025]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained. In other words, the support part supports a part of the weight when sitting straight, thereby preventing or reducing numbness by reducing the weight applied to the legs, and sitting straight with the opposite shin and instep bent. Can prevent or reduce ankle pain. In addition, the cushion of the present invention for a regular seat has almost the same appearance as that of a normal cushion, and has an excellent appearance.

[Brief description of the drawings]

FIG. 1 is a perspective view of a seat cushion according to an embodiment of the present invention.

FIG. 2 is a perspective view of a futon portion according to an embodiment of the present invention.

FIG. 3 is a perspective view of a support part of the embodiment of the present invention;

FIG. 4 is a perspective view of the cushion material according to the embodiment of the present invention;

FIG. 5 is a perspective view of the seat cushion according to the embodiment of the present invention, showing a sitting position.

FIG. 6 is a right side view of the seat according to the embodiment of the present invention, showing a state in which the seat is seated using the seat cushion.

FIG. 7 is a top view of a seat cushion according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a cross section XX of the cushion for normal seat shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Cushion for regular seat 2, 2c Duvet part 2a, 2b Rear end part of upper surface of futon part 3 Fitting concave part 4, 4a Support part 4b Upper part of support part 4a 4c Opening 5 Top plate 6 Connecting member 7 Bottom plate 8 Cushion material DESCRIPTION OF SYMBOLS 10 Ankle 12 Toe 14 Facing shin 16 Instep 21a, 21b Depression for accommodating a toe part

Claims (7)

[Utility model registration claims] Claims: 1. A seat cushion for straight sitting for reducing pain when sitting straight, comprising: a supporting portion for supporting a buttocks at least at a position higher than an ankle; and a knee for lowering a toe portion than an ankle. And a futon portion for supporting the shin to the ankle. 2. The seat cushion according to claim 1, wherein an ankle is supported at a rear end portion of an upper surface of the futon portion, and a toe portion is present outside the futon portion. 3. The cushion according to claim 1, wherein a concave portion for accommodating a toe portion is provided on an upper surface of the futon portion. 4. The seat cushion according to claim 1, wherein said support portion is detachable from said futon portion. 5. The cushion according to claim 4, wherein said support portion and said futon portion are fitted to each other. 6. The support portion has an upper plate, a lower plate, and a connecting member for connecting the upper plate and the lower plate, and the futon portion has the lower plate, The cushion according to claim 5, further comprising a concave portion for accommodating at least a part of the connecting member. 7. The cushion according to claim 1, wherein a cushion material is interposed between the supporting portion and the buttocks.