JP3167964U - Wheelchair cushion - Google Patents

Abstract

[PROBLEMS] To provide a new cushioning technology capable of significantly increasing body pressure dispersion performance, realizing a wider seating contact area and realizing more stable seating use, and capable of following a folding operation of a wheelchair. . A first main body member and a second main body, each of which is formed at a position where a plurality of concave portions that open are aligned with each other, with the other surface extending from one side to the other with the middle thickness as the bottom. It consists of members. Further, the surfaces of the first main body member and the second main body member formed with the recesses are bonded to each other by aligning the respective recesses to form an integrated cushion body 12. The film 22 is attached to the entire surface, and the plane outline dimension is kept within the wheelchair 5 seating surface 50 dimension to be used or matched with the seating surface 50 dimension, and set to a desired vertical thickness dimension T. The wheelchair cushion 1 is used. [Selection] Figure 1

Description

    The present invention relates to cushions, cushions, pillows, mats, etc., especially in the field of manufacturing and providing cushions for wheelchair seats and rear seats, as well as their transportation, storage, assembly and From the field of providing and selling equipment and equipment necessary for installation, materials such as wood, stone, various fibers, plastics, various metal materials, etc. required for such materials, machinery and parts are provided. Field, the field of electronic components incorporated in them, the field of control-related equipment that integrates them, the field of various measuring instruments, the field of the equipment, the power machine that moves the instrument, the electric power that is the energy and the electricity, the energy source Fields generally referred to as industrial machinery, such as fields, testing and researching those facilities and equipment, and exhibiting, selling, importing and exporting them Territory, generals, the results of their use, the equipment used to build them, the fields related to the collection and transportation of trash generated by the operation of equipment, and the recycling that efficiently recycles the trash There are no technical fields that are not related to other fields, such as new fields that cannot be envisaged at this time.

(Points of interest)
Common folding wheelchairs can be folded by the folding mechanism under the seat so that the left and right frames can approach each other with the center between the left and right as the boundary, realizing such a folding operation. Therefore, the seat and back sheets are made of a flexible material, so that the user's comfortable seating is somewhat sacrificed, and sufficient body pressure dispersion action cannot be obtained for a long time. When sitting for a long time, there is a risk of skin pulling, ischemia, pressure ulcers, etc. occurring in the body part where the weight is concentrated.

    In order to eliminate these disadvantages, cushions, cushions, towels, etc. are widely used in places where weight is concentrated. It is usually inferior in pressure dispersion performance, especially when it is used for a long time or for a long time, it will gradually lose its elasticity, causing concentration of body pressure and not using anything As with the condition, the problem of being injured at a body part where the weight is concentrated often remains unresolved.

(Conventional technology)
(Conventional technology)
Reflecting this situation, proposals that can be used to overcome this situation are not unheard of.
For example, as represented by those proposed in the following Patent Documents 1 (1) to 1 (6), cushions having a shape that enhances supportability such as the waist and the hips, and multiple types of hardness In addition to the soft cushion material that has been superposed on the necessary places to prevent body pressure dispersibility and forward slipping, the tailbone and the like as seen in Patent Document 1 (7) to 1 (11) The body load dispersion performance is further improved by recessing or penetrating the contact part such as under the buttocks, or the center between the left and right as in Patent Document 1 (12) to 1 (14). A cushion that can be folded from the top, and a cushion that can be folded while the wheelchair is worn.

However, as shown in the former patent documents 1 (1) to 1 (6), those having a cushion of a special shape for each part such as the left and right flank, waist, and the like, those for exclusive use on the flank are dedicated to the waist Must be used only for the lower back, has a disadvantage that the degree of freedom of use is narrow, the shape does not fit the body, and it is difficult to move and adjust when a compression point occurs, A cushion that is erected so that convex portions such as short columnar shapes and block shapes are adjacent to each other with a groove opening upward between the convex portions, the upper ends of the convex portions are separated from each other as the body pressure is dispersed. The cushions, which are composed of multiple elastic pipes arranged adjacent to each other in parallel, are susceptible to instability due to the fact that the body of the seated user moves back and forth, left and right by opening and closing each other. The area is reduced and the length dimension of each pipe In addition, there is a problem that it becomes easy to slip in the direction, and further, a concave notch or a penetrating part is formed at a contact portion such as the tailbone or under the hip as seen in Patent Document 1 (7) to 1 (11) Has the disadvantage that it cannot follow the operation of folding the wheelchair, and also has a folding structure that can follow the folding operation of the wheelchair as in Patent Document 1 (12) to 1 (14). All the cushions are formed separately for the cushion for the seat surface and the cushion for the back surface, and they can be fixed to the wheelchair with individual bands etc., but the desorption operation is complicated, In the case of shifting, the fixing band portion has to be retightened, which may increase the burden on the wheelchair user.
(1) JP 2003-153664 A (2) JP 2004-174136 A (3) JP 2004-229702 (4) JP 2005-152498 (5) JP 2005-185722 (6) JP 2006-218007 (7) JP 2001-25426 (8) JP 2002-28185 (9) JP 2006-200 (10) JP 2006-136552 (11) Utility Model Registration No. 3130702 (12) Japanese Patent Laid-Open No. 10-192081 (13) Japanese Patent Laid-Open No. 2001-238915 (14) Japanese Patent Laid-Open No. 2001-276141

(Awareness of problems)
As described above, in the cushions for various wheelchairs that have been proposed so far, in the case where a plurality of protrusions are formed in order to improve the body pressure dispersion performance, the upper end of each convex portion swings back and forth and right and left. The seating posture may become unstable, or it may not be possible to follow the folding movement of the wheelchair, so it must be attached to each part of the wheelchair, moving at any time, and adjusting to the body In view of the shortcomings such as being difficult to adjust, it is possible to respond flexibly to various users for many years, and high body pressure dispersion performance can be secured. We have been involved in the development and research of such mattresses, and have already completed and provided patent No. 4346066 (Japanese Patent Laid-Open No. 2004-202206) on their own. Based on various knowledge and information from users, the body pressure dispersion function of the wheelchair cushion can be accurately and efficiently realized not only from the body pressure dispersion function but also from the manufacturing process. As a result, the possibility of further improvement has been felt.

(Purpose of the idea)
Therefore, this device greatly improves body pressure dispersion performance, secures a large seating contact area, and realizes more stable seating utilization, and also a new cushion technology that can follow the folding operation of a wheelchair As a result of the long-term trial and error and many trials and experiments, we finally realized a new structure for wheelchair cushions. In the following, the configuration will be described in detail together with an embodiment representative of the present invention shown in the drawings.

(Structure of the device)
As will be clearly understood from the embodiments of the present invention shown in the drawings, the wheelchair cushion of the present invention basically has the following configuration.
That is, the first main body member and the second main body member formed at positions where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of concave portions that are opened are regulated to align with each other. The surfaces of the first body member and the second body member, which are the recess-forming surfaces of the first body member and the second body member, are bonded and integrated by aligning the individual recesses. A cushion body is formed that is confined in an independent state without communicating with each other, and a film having air permeability and water-impermeable properties is applied to substantially the entire surface of the cushion body. The outer dimensions of the plane should be kept within the left and right inner width dimensions and front and rear inner depth dimensions of the wheelchair seat surface to be used, or matched to the left and right inner width dimensions and front and rear inner depth dimensions of the same seat surface. upon A wheelchair cushion summarized as configuration and those that have been set to the thickness dimension rectangular thick plate of.

    The wheelchair cushion according to the present invention having the basic structure as described above, if expressed in different ways, each has a plurality of openings that extend from one side to the other side with the middle of the thickness as the bottom, and open. Of the first main body member and the second main body member formed at positions restricted so that the concave portions of the first main body member and the second main body member are aligned with each other. Adhering and integrating the individual recesses, they are integrated, forming a cushion body that is confined in an independent state without any mutual communication between adjacent recesses. In addition, a substantially breathable and water-impermeable film is adhered to substantially the entire surface of the cushion body, and the horizontal outer dimensions and the front and rear inner depths of the wheelchair seat surface to be used are the plane outer dimensions. Or a rectangular thick plate that is set to a desired vertical thickness, and is at least one of the first main body member or the second main body member. Either one of the cushions for a wheelchair has a structure in which a body pressure dispersion groove having a predetermined depth dimension opened in the shape of a flat cross or a star is formed in the center of the outer surface.

    More specifically, the first main body member and the second body are formed at positions where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of open recesses are regulated to align with each other. It is composed of a main body member, and the first and second main body members, which are the concave portion forming surfaces, are bonded and integrated by aligning the individual concave portions, and there are mutual concave portions. A cushion body is formed which is confined in an independent state without communicating with each other by simply communicating in the vertical direction, and a film having air permeability and water permeability is formed on substantially the entire surface of the cushion body. The flat outer dimensions of the wheelchair are fixed within 1/2 of the left and right inner width of the wheelchair seat surface to be used, and the front and rear inner depth dimensions, or 1/2 of the left and right inner width of the seat surface and For front and rear depth The two split cushion bodies set to the desired vertical thickness are made to be the same, and the two separate cushion bodies are arranged side by side to form a storage bag portion that can be loaded, and the center between the left and right storage bag portions. A cushion cover formed with a flexible connecting portion that can be folded, and a cushion for a wheelchair comprising a structure in which one piece of the divided cushion body is inserted into each of the left and right storage bag portions of the cushion cover; Become.

    As described above, according to the cushion for a wheelchair of the present invention, the cushion body is caused by the unique characteristic configuration as described above, unlike the conventional one where the unevenness for body pressure dispersion is exposed on the outer surface. Since the plurality of recesses communicate with each other up and down in the middle of the wall thickness, the adjacent ones are confined in an independent state without communicating with each other, so the tip of the columnar part formed between each recess Therefore, when body pressure acts on the main body member, the intermediate portion of the columnar portion of the main body member bends, thereby generating an appropriate counter force for supporting the body pressure, The desired body pressure dispersion effect can be obtained. For example, the main body member is formed from a relatively hard material, and even if a large number of recesses are provided, it does not become too soft, and the flat member is formed from a relatively soft material. Wait In this way, the cushion as a whole can maintain a suitable hardness, obtain a desired body pressure dispersion effect, and can be placed on the seat portion of the wheelchair, regardless of whether the wheelchair is running or stopped, For those having a buttocks, a thigh lower surface, and a backrest portion in a sitting posture of a wheelchair user, each contact surface such as the user's back surface can be supported remarkably and stably. In addition, the body pressure of each part can be more effectively dispersed, and the occurrence of skin pulling, ischemia and pressure ulcers can be effectively prevented even during prolonged use, and the fatigue and burden on the user can be greatly reduced. It has an excellent effect of becoming a thing.

    In addition, according to the cushion for a wheelchair of the present invention, the distal end portion of the columnar portion of the main body member is fixed to the flat member, thereby restricting that the distal end portion of these columnar portions is flexed freely. The body member is made of a relatively soft material, and the flat member is made of a relatively hard material, so that the cushion as a whole can be kept soft. The advantage that a body pressure dispersion effect can be obtained is obtained.

    In the cushion in which the first flat member is integrally provided on one surface of the main body member of the wheelchair cushion of the present invention and the second flat member is integrally provided on the other surface, both end portions of the columnar portion of the main body member are first and It is fixed to the second flat member, thereby restricting the both end portions of these columnar portions to be freely bent. Therefore, when body pressure acts on the cushion body, the intermediate portion of the columnar portion of the main body member bends. As a result, an appropriate counter force for supporting the body pressure is generated, a desired body pressure dispersion effect is obtained, and the main body member is formed of a relatively hard material, so that a large number of recesses are provided. However, the first and second flat members are made of a relatively soft material, and by configuring in this way, it is possible to maintain an appropriate hardness as the entire cushion. Kill.

    According to the wheelchair cushion formed so that the first flat member of the present invention is softer than the second flat member, the first flat member is on the front side of the cushion body, While the feel to the user can be made somewhat soft, the touch to the user can be made somewhat harder by allowing the second flat member to be on the front side of the cushion body. In the wheelchair cushion of the present invention in which the first body member of the cushion body is formed of a relatively soft material and the second body member is formed of a relatively hard material, the first body member is on the front side of the cushion body. By making the second body member on the front side of the cushion body, the feel to the user can be somewhat softened by It can be somewhat hard feel to the use person.

    A plurality of concave portions are provided on one surface of the first main body member and the second main body member of the present invention, and the first main body member and the second main body member are integrally provided so that the concave portions are aligned. In the wheelchair cushion, the distal end portions of the columnar portions of the first body member and the second body member are fixed to each other, thereby restricting the distal end portions of these columnar portions to be freely bent, thereby further increasing body pressure dispersion. The effect can be demonstrated.

    Also, a body pressure dispersion groove having a predetermined depth dimension opened in the shape of a flat cross or star at the center of the outer surface tends to concentrate weight such as the tailbone in the body pressure dispersion groove. By using the corresponding parts, the weight can be distributed more effectively and uniformly around it, and the burden of long-term use etc. can be greatly reduced, and the stability of the sitting posture can be greatly increased The effect of becoming is obtained.

    Set the wheelchair seat surface within 1/2 of the left and right inner width dimension and the front and rear depth dimensions, or match the same half of the left and right inner width dimension and front and rear inner depth dimension of the seat surface, and set the desired vertical thickness dimension. In the case where the two divided cushion bodies are accommodated in the left and right accommodation bag portions of the cushion cover, the flexible connecting portion in the center between the cushion cover left and right accommodation bag portions corresponds to the center between the left and right sides of the wheelchair seat surface. It can be arranged in such a way that it can follow the folding operation of the wheelchair and can be folded together without being bulky, and it can be improved in storage property, and one split cushion body of the backrest Arranged so that either the left or right armrest rear side is located on the right side of the left side of the armrest, the other side of the left side of the armrest is placed at the left or right side. Such as use as protection for the surrounding left or right corresponding flank of the use's it can broadly conveniently used also as such an auxiliary cushions and nursing cushion.

    In addition, the cushion body should be kept within the left and right inner width dimensions and front and rear inner depth dimensions + backrest vertical length dimensions of the wheelchair seat surface to be used, or the left and right inner width dimensions and front and rear inner depth of the seat surface. In the case of a rectangular thick plate that matches the size + backrest vertical length and is set to the desired thickness dimension, it is designed to be integrated continuously from the wheelchair seating surface to the backrest. Thus, the weight of the user can be more reliably dispersed, and the load on the user and the feeling of fatigue can be significantly reduced as compared with the case where a cushion having a separate seating surface and back surface is used.

    And the cushion body corresponds to the number of recesses and / or recess dimensions in the range corresponding to the wheelchair backrest left and right inner width dimension and vertical length dimension of the plane outer dimension, the wheelchair seating surface left and right inner width dimension and front and rear inner depth dimension If the number of recesses and / or the size of the recesses is set larger than the range to be used, the seating surface and the back surface can be given appropriate hardness and softness according to the respective load loads, so the whole is homogeneous. It is hard and the seating surface is easily crushed, and the backside is hard and the physical burden on the user is heavy. The effect that can be realized is obtained.

In implementing this device having the above-described configuration, the best or desirable mode will be described.
The cushion body is the main part of the cushion for the wheelchair, and can be used as it is on the wheelchair and exhibits an excellent body pressure dispersion function. The film has a function of forming a cushion for a wheelchair, and basically has a plurality of recesses that open from the other side toward one side with the middle part of the thickness as the bottom, and open. Are formed of a first body member and a second body member formed at positions regulated so as to be aligned with each other, and the one surface which is the concave portion forming surface of the first body member and the second body member is Adhering and integrating the recesses individually, the recesses are connected to each other vertically, and the adjacent recesses are connected to each other without being connected to each other. As shown in the examples described later, the left and right inner and front and rear inner depth dimensions of the wheelchair seat surface to be used as shown in the examples described later. It should be in the shape of a rectangular thick plate that is set in the desired upper and lower thickness dimensions, or is matched with the left and right inner width dimensions and front and rear inner depth dimensions of the same seating surface.

    The cushion main body has a plane outer dimension within 1/2 of the left and right inner width dimension of the wheelchair seat surface to be used and within the front and rear inner depth dimension, or 1/2 of the left and right inner width dimension of the seat surface. The two split cushion bodies are set to the desired upper and lower thickness dimensions in accordance with the depth dimensions in the front and rear, and the accommodation bag portion that can be loaded is formed by arranging the two split cushion bodies on the left and right sides. A cushion cover formed with a flexible connecting portion that can be folded is provided at the center between the storage bag portions, and one piece of the divided cushion body can be inserted into each of the left and right storage bag portions of the cushion cover. .

    The cushion cover is integrated so that two split cushion bodies can be arranged side by side on the wheelchair seat, and the cushion cover bears the function of being able to be folded and deformed so as to follow the folding operation of the wheelchair. It must have a flexible connecting part that can be folded at the center between the bag parts, and is a sufficiently flexible cloth, resin sheet, and so on that does not interfere with the body pressure distribution function of the two split cushion bodies that are the cushion body, It should be made of rubber sheets, leather, other sheet materials, or a combination thereof, and preferably have breathability and waterproofness, and at appropriate places such as the outer peripheral edges of the left and right storage bag parts, It is desirable to form an opening having an opening / closing mechanism such as a fastener or a button that can be detachably accommodated in each of the two divided cushion bodies. The flexible connecting portion is connected over the entire length in the front-rear direction at the center between the left and right containing bag portions, or is formed with a connecting portion such as a band shape, a string shape, or a hinge shape extending over the left and right at a plurality of front and rear portions. be able to.

    Also, the cushion body should be kept within the left and right inner width dimensions and front and rear inner depth dimensions of the wheelchair seat surface to be used and the backrest vertical length dimension, or the left and right inner width dimensions and front and rear It is possible to make it a rectangular thick plate shape that matches the depth dimension + the vertical length of the backrest and is set to a desired thickness dimension.

    Since the main body member is formed from a relatively hard material, it does not become too soft even if a large number of recesses are provided, and the flat member is formed from a relatively soft material. By configuring in this way, the cushion as a whole can be kept at a suitable hardness, and a desired body pressure dispersion effect can be obtained. The hardness of the cushion can be changed depending on whether the table is used or not, and such a main body member and a flat member are, for example, a rubber material (for example, a natural rubber material) whose hardness is adjusted. ), A urethane resin material (foamed).

    Since this cushion has the same configuration as described above, the tip end portions of the columnar portions of the main body member are fixed to the flat member, whereby the tip end portions of these columnar portions are freely bent. The body member is made of a relatively soft material, and the flat member is made of a relatively hard material. The body pressure dispersion effect can be obtained while keeping the softness of the cushion as a whole, and the cushion can be used when the main body member is used with the front side and when the flat member is used with the front side. Can change the hardness.

    In this cushion, since the first flat member is integrally provided on one surface of the main body member of the cushion main body and the second flat member is integrally provided on the other surface, the columnar portion (portion other than the concave portion) of the main body member. Both end portions of the main body member are fixed to the first and second flat members, thereby restricting both end portions of the columnar portions to bend freely. Therefore, when body pressure acts on the cushion body, the columnar portions of the main body member As a result, the desired intermediate pressure dispersion effect can be obtained in the same manner as described above.

    Further, since the main body member is formed from a relatively hard material, it does not become too soft even if a large number of recesses are provided, and the first and second flat members are formed from a relatively soft material. By configuring in this way, it is possible to maintain an appropriate hardness as the entire cushion, as described above.

    In the wheelchair cushion of the present invention, the first flat member may be formed so as to be softer than the second flat member. As a result, the first flat member is more than the second flat member. Since the first flat member is made soft so that the surface of the entire cushion is hidden, the feel to the user can be made somewhat soft, whereas the second flat member By making the front of the cushion body bend, the feel to the user can be somewhat stiff

    The cushion includes a cushion body including a first body member and a second body member as body members. The first body member as the body member is formed of a relatively soft material, and the second body In the case where the member is made of a relatively hard material, by making the first main body member the front side of the cushion main body, the feel to the user can be somewhat softened. By making the second main body member the front side of the cushion main body, the feel to the user can be somewhat hardened, and by changing the front and back of the cushion, the hardness can be changed.

    In the cushion in which the first body member and the second body member are aligned with a plurality of recesses extending from the one surface toward the other surface, a plurality of recesses are provided on one surface thereof, Since the first main body member and the second main body member are provided so as to be integrated with each other so that the concave portions are aligned, the columnar portions (portions other than the concave portions) of the first main body member and the second main body member. The tip portions of the columnar portions are fixed to each other, thereby restricting the tip portions of the columnar portions to be freely bent. Therefore, when body pressure acts on the first body member and / or the second body member, body pressure is reduced. An appropriate counter force for supporting is generated, and a desired body pressure dispersion effect is obtained.

In the above cushion of the present invention, a substantially breathable and water-impermeable film, such as a film made of polyester, nylon, vinyl chloride or urethane, is provided on substantially the entire surface of the cushion body. Air must pass through this film, which makes it difficult for the inside of the cushion body to get stuffy, providing a comfortable environment for users such as patients, water, filth, etc. Are prevented from entering the interior, thereby reducing the propagation of germs and the like, and maintaining hygiene and cleanliness.
In the following, the structure will be described in detail together with an embodiment representative of the present invention shown in the drawings.

The drawings show some typical embodiments embodying the technical concept of the wheelchair cushion of the present invention.
It is a perspective view which shows the cushion with which a wheelchair is mounted | worn. It is a top view which shows the cushion for wheelchairs. It is sectional drawing which shows the cushion AA line part in FIG. It is a perspective view which shows the cushion main body which made the film a cross section. It is sectional drawing which shows the cushion which changed a part. It is sectional drawing which shows the cushion which used one side of the main body member as the flat member. It is sectional drawing which shows the cushion which has pinched | interposed the main body member between the 1st and 2nd flat member. It is sectional drawing which shows the 1st and 2nd main body member in which the some recessed part was formed in both. It is a top view which shows the cushion for wheelchairs which carved the body pressure dispersion | distribution groove | channel in the outer surface center. It is sectional drawing which shows the cushion of the AA line part in FIG. It is a perspective view which shows the cushion for wheelchairs which has a foldable cushion cover. It is a perspective view which shows the two division | segmentation cushion bodies accommodated in a cushion cover. It is a perspective view which shows the foldable cushion utilized for a wheelchair. It is a perspective view which shows the cushion for wheelchairs extended to the backrest. It is a top view which shows the cushion for wheelchairs which extended the backrest part.

    The perspective view of the cushion with which the wheelchair of FIG. 1 is mounted | worn, The top view of the cushion for wheelchairs of FIG. 2, Sectional drawing of the cushion AA line part in FIG. 2 of FIG. 5 is a cross-sectional view of a cushion obtained by changing a part of FIG. 5, a cross-sectional view of a cushion in which one of the main body members of FIG. 6 is a flat member, and a main body between the first and second flat members of FIG. Examples of the first main body member 14 and the second main body member 15D shown in the cross-sectional view of the cushion sandwiching the members and the cross-sectional views of the first and second main body members in which a plurality of recesses are formed in both of FIGS. After forming the cushion body 12 formed by aligning the recesses 18 with each other and forming the cushion body 12 integrally, the film 22 is attached to the entire surface of the cushion body 12. The plane outline dimensions One representative wheelchair cushion according to the present invention, which is set within a dimension of the seating surface 50 of the wheelchair 5 to be used or matched with the size of the seating surface 50 and set to a desired vertical thickness dimension T. An example is shown.

    As can be clearly understood from FIGS. 1 to 4, the wheelchair cushion 1 of the present invention has its plane outer dimensions kept within the left and right inner width dimensions and the front and rear inner depth dimensions of the wheelchair 5 seat surface 50 to be used. A rectangular thick plate that matches the left and right inner width dimensions and front and rear inner depth dimensions of the seating surface 50, has a left and right width dimension W of 40 cm, a depth dimension L of 40 cm, and a vertical thickness dimension T of 3.5 cm. As shown in FIGS. 1 to 3, the cushion 1 includes a thin square cushion body 12, and the cushion body 12 is integrated with the body member 14 and one surface (lower surface) of the body member 14. The main body member 14 and the flat member 16 are made of, for example, a rubber material (for example, natural rubber material, synthetic rubber material), urethane, and the like. For example, an adhesive is used so that the flat member 16 is integrated with one surface of the main body member 14 as shown in FIG. Used to fix.

    The main body member 14 is provided with a plurality of recesses 18 from one surface (the lower surface in FIG. 3) to the other surface (the upper surface in FIG. 3), and each recess 18 is substantially uniform at an appropriate interval. The recesses 18 are formed in a columnar shape, and the recesses 18 may have an appropriate shape such as a square or hexagonal prism.

    The cushion body 12 is formed so that the thickness t2 of the flat member 16 is about m1 cm and is, for example, 7 mm. When the thickness t1 of the body member 14 is 28 mm, the depth H of the recess 18 is , About 21 mm. Note that the thickness t1 of the main body portion 14 and the thickness t2 of the flat member 16 may be substantially equal to 17.5 mm.

    Referring also to FIG. 4, substantially the entire surface of the cushion body 12 is preferably covered with a film 22 that is air permeable and water impermeable, and the film 22 is formed on one surface of the cushion body 12 with an adhesive, for example. The cushion body 12 is covered with the film 22 by being attached to the other surface and the four side surfaces and configured in this way. Since the film 22 has air permeability, ventilation is performed through the film 22, and the cushion body 12. Since the film 22 is impermeable to water, the film 22 prevents water, dirt, and the like from entering through the film 22, thereby preventing the cushion body 12 from being soiled. Therefore, the propagation of germs and the like can be suppressed, and it can be kept hygienic and clean. It can be formed polyester, nylon, vinyl chloride, urethanes and the like.

Next, a wheelchair cushion 1 with some changes will be described with reference to FIG.
FIG. 5 is a cross-sectional view corresponding to FIG. 3, showing the wheelchair cushion 1 with some changes. In addition, below, the same reference number is attached | subjected to the substantially same member as the wheelchair cushion 1 shown in FIG. 3, and the description is abbreviate | omitted.
In FIG. 5, the wheelchair cushion 1 includes a cushion main body 12A. The cushion main body 12A includes a main body member 14A and a flat member 16 provided integrally with one surface (upper surface) of the main body member 14A. The body member 14A is provided with a plurality of recesses 18A extending from one surface (upper surface in FIG. 5) to the other surface (lower surface in FIG. 5), and the cushion body 12A is also described above. Similarly, it is desirable to cover the entire surface of the cushion body 12A with a breathable and water-impermeable film (not shown), and the configuration of the cushion body 12A is substantially the same as the cushion body 12 described above. .

Next, the cushion 1 in which one of the main body members 14B and 16B is a flat member 16B will be described with reference to FIG. 6. In FIG. 6, one of the main body members 14B and 16B is a flat member 16B. It is sectional drawing corresponding to FIG. 3 which shows the cushion main body 12B of the cushion 1. FIG.
In FIG. 6, the cushion 1 in which one of the body members 14B and 16B is a flat member 16B includes a cushion body 12B. The cushion body 12B is integrated with the body member 14B and one surface (lower surface) of the body member 14B. The body member 14B includes a plurality of recesses 18B extending from one surface (lower surface in FIG. 6) to the other surface (upper surface in FIG. 6). Is provided.

    The cushion body 12B is formed such that its thickness T is set to 6 cm, for example, and the thickness t1 of the body member 14B and the thickness t2 of the flat member 16B are substantially equal, for example, about 3 cm, respectively. Further, the depth H of the recess 18B of the main body member 14B is about 1 to 2 cm, for example, 15 mm.

    Also in the cushion main body 12B, as described above, it is desirable that the entire surface of the cushion main body 12B is covered with a breathable and non-permeable film (not shown). The configuration of is substantially the same as that of the cushion main body 12 shown in FIGS. 3 and 5 described above.

Next, the cushion 1 in which the main body member 14C is sandwiched between the first and second flat members 32 and 34 will be described with reference to FIG. FIG. 7 is a cross-sectional view corresponding to FIG. 3, showing the cushion main body 12C with some changes.
In FIG. 7, the mattress main body 12C of the wheelchair cushion 1 is provided, and the cushion main body 12C is integrated with the main body member 14C and one surface (lower surface) of the main body member 14C. 32 and a second flat member 34 provided integrally with the other surface (upper surface) of the main body member 14C. The main body member 14C has one surface (lower surface in FIG. 7). A plurality of through-holes 36 penetrating from one side to the other side (the upper surface in FIG. 7) are provided, and a large number of these through-holes 36 are provided so as to be substantially uniform at appropriate intervals. Although it is formed in a columnar shape and is not shown, it is desirable that the entire surface of the cushion main body 12C be covered with a breathable and non-permeable film. The other configuration of the wheelchair cushion 1 is shown in FIG. It is substantially the same as the wheelchair cushion 1 shown in and Figure 5.

Next, with reference to FIG. 8, the cushion 1 having the first and second body members 14D and 15D in which a plurality of recesses 18D and 19D are formed on both sides will be described.
In FIG. 8, the wheelchair cushion 1 includes a cushion body 12D. The cushion body 12D includes a first body member 14D and a second body member 15D, and the first body member 14D and the second body member 15D include The first body member 14D and the second body member 15D have substantially the same configuration, and a large number of recesses 18D and 19D extending toward the other surface are provided on one surface so as to be substantially uniform. The wheelchair is fixed with, for example, an adhesive so that one surface thereof (the surface provided with the recesses 18D and 19D) is integrated so that the multiple recesses 18D and 19D are aligned with each other. Even in the cushion 1, although not shown, it is desirable to cover the entire surface of the cushion body 12D with a breathable and non-permeable film. Other configurations of the chair cushion 1, FIG. 3 described above is substantially the same as the cushion 1 of FIG. 5 and FIG.

    The wheelchair cushion 1 of the present invention is shown in a plan view of a cushion for wheelchair in which a body pressure dispersion groove is formed in the center of the outer surface of FIG. 9 and a sectional view of the cushion taken along the line AA in FIG. The cushion main body 12D is formed by engraving a planar cross-shaped body pressure dispersion groove 21 at the center of the outer surface of at least one of the first main body member 14D and the second main body member 15D. For example, the body pressure dispersion groove 21 has a shape dug down so as to leave a thin bottom surface without penetrating in the thickness direction from the center of the outer surface of the first body member 14D, and the first body member 14D and the second body member 15D are A large number of recesses 18D and 19D are aligned with each other, and one surface thereof (the surface provided with the recesses 18D and 19D) is integrally fixed using an adhesive.

Further, the body pressure dispersion groove 21 penetrates in the member thickness direction from the center of the outer surface of the first body member 14D, and is a thin, first cross-shaped planar cross that matches the planar cross shape of the body pressure dispersion groove 21. A member made of the same material as the member 14D and bonded and sealed so as to be covered with a sealing sheet (not shown) is also substantially the same structure as the above-described one shown in FIGS. it can.
Even in the wheelchair cushion 1, although not shown, it can be said that it is desirable to cover the entire surface of the cushion body 12D with a breathable and non-permeable film.

    The perspective view of the cushion for wheelchairs which has the foldable cushion cover of FIG. 11, the perspective view of the two split cushion bodies accommodated in the cushion cover of FIG. 12, and the perspective view of the foldable cushion used for the wheelchair of FIG. In the example shown in the figure, the cushion main body 12 of the wheelchair cushion 1 of the present invention keeps the planar outer dimension within 1/2 of the left and right inner width dimension of the wheelchair 5 seat surface 50 to be used and the front and rear inner depth dimension. Alternatively, the width 50 is equal to (20 cm + 20 cm) 40 cm, the front / rear depth dimension L is 40 cm, and the upper / lower thickness dimension T is 3.5 cm. Or two split cushion bodies 12E set to either one of 6 cm, and the two split cushion bodies 12E on the left and right. A cushion cover 4 having a flexible connecting portion 41 that is foldable is formed in the center between the left and right accommodation bag portions 40, and the cushion cover 4 is provided on the left and right sides of the cushion cover 4. One of the divided cushion bodies 12E is inserted into each of the storage bag portions 40.

    The cushion cover 4 can be made of various materials such as breathable cloth, chemical fiber, synthetic resin film, natural rubber, synthetic leather, leather, and has waterproof properties. In addition, each storage bag portion 40 can have a free fastener, buttons, and the like in addition to the opening / closing fastener 42, and the two divided cushion bodies 12E are taken out without providing an opening / closing portion. In the wheelchair cushion 1, the entire surface of the two divided cushion bodies 12 </ b> E constituting the cushion main body 12 is breathable and non-permeable. It is desirable to cover with a water permeable film.

    14 is a perspective view of the wheelchair cushion extended to the backrest, and FIG. 15 is a plan view of the wheelchair cushion with the backrest portion extended, and the wheelchair cushion 1 of the present invention is shown in FIG. The left and right inner width dimensions and the front and rear inner depth dimensions of the wheelchair 5 seating surface 50 to be used and the backrest vertical length dimensions are kept within the same size, or the left and right inner width dimensions and the front and rear inner depth dimensions and the backrest vertical height dimensions of the seat surface are matched. For example, a rectangular thick plate having a lateral width dimension W of 40 cm, a longitudinal depth dimension L + backrest vertical dimension H of 83 cm, and a vertical thickness dimension T of 3.5 cm or 6 cm is set.

As shown in FIG. 15, the cushion main body 12 has the number of recesses 18 in a range corresponding to the horizontal width W and the vertical length H of the wheelchair 50 with the flat outer dimension of the wheelchair 50. The cushion body 12 can be set to have a larger number than the number of recesses 18 in the range corresponding to the inner width dimension W and the front and rear inner depth dimension L. Wheelchair 50 backrest 51 left and right inner width dimension W and vertical recess dimension 18 in the range corresponding to upper and lower longitudinal dimension H are larger than the recess 18 dimension in the range corresponding to wheelchair 50 seat surface 51 left and right inner width dimension and front and rear inner depth dimension L. Can be set to a large value.
Even in the wheelchair cushion 1, although not shown, it is desirable to cover the entire surface of the cushion body 12 with a breathable and non-permeable film.

    The various embodiments of the cushion 1 according to the present invention have been described above, but the present invention is not limited to such embodiments, and various modifications or corrections can be made without departing from the scope of the present invention. Needless to say, these are the wheelchair cushions of this invention.

(Operation / Effect of Example 1)
The wheelchair cushion 1 of the present invention constructed as described above is placed on the seat surface 50 of the wheelchair 5 because of its size and shape as shown in FIGS. Further, the flat member 16 is integrally provided on one surface of the main body member 14 so that the columnar portion 20 (between the recesses 18) of the main body member 14 can be used. The deflection of the tip of the existing portion) is limited by the flat member 16, so that the central portion in the longitudinal direction (vertical direction in FIG. 3) of the columnar portion 20 is elastically deformed and bent, thereby supporting body pressure. Therefore, an appropriate counter force is generated.

The cushion body 12 is formed of a relatively hard material, and the flat member 16 is formed of a relatively soft material. Such adjustment of hardness changes the material. Or by changing the degree of foaming.
By forming the main body member 14 from a relatively hard material, even if the plurality of recesses 18 are provided, the body member 14 does not become too soft, can maintain an appropriate hardness, and the flat member 16 can be relatively soft. By forming from the material, only one surface of the cushion body 12 does not become too hard, and by configuring in this way, the cushion body 12 maintains an appropriate hardness and supports body pressure with an appropriate resistance. And a desired body pressure dispersion effect can be obtained.

    In the wheelchair cushion 1, the flat member 16 is placed on, for example, a seating surface 50 of the wheelchair 5, and a user such as a patient sits on the upper surface of the cushion main body 12. When seated on the upper surface of the cushion main body 12 in this way, the flat member 16 is provided so as to be integrated with one surface of the main body member 14, so that the central portion in the longitudinal direction of the columnar portion 20 of the main body member 14 is elastically deformed and bent. Thus, the body pressure is dispersed and supported, but an appropriate counter force is generated in the support, and a desired body pressure dispersion effect can be obtained while maintaining an appropriate hardness.

    In the wheelchair cushion 1 shown in FIG. 5, the main body member 14A is placed on, for example, the seat surface 50 of the wheelchair 5 in FIG. 1, and the user is seated on the upper surface of the cushion main body 12A. Since the flat member 16 is provided so as to be integrated with one surface of the main body member 14A when seated on the upper surface of the flat member 16, the intermediate portion in the longitudinal direction of the columnar portion 20 of the main body member 14A is the same as described above. As the cushion main body 12 is bent, the desired body pressure dispersion effect can be obtained while maintaining an appropriate hardness.

    In the cushion main body 12B shown in FIG. 6, the main body member 14B is formed of a relatively soft material, and the flat member 16B is formed of a relatively hard material. It can be adjusted by changing the material or changing the degree of foaming. By comprising in this way, the touch with respect to a user becomes soft by making the main body member 14B the front side of the cushion 1, whereas the touch to the user is hard by making the flat member 16B the front side of the cushion 1. Thus, the feeling for the user can be changed depending on how the cushion 1 is placed.

    As shown in FIG. 7, the first and second flat members 32, 34 are configured so as to be integrated with both surfaces of the main body member 14 </ b> C using, for example, an adhesive. Thus, the bending of both end portions of the columnar portion 20 of the main body member 14C can be limited by the first and second flat members 32 and 34. Therefore, the longitudinal intermediate portion of the columnar portion 20 is elastically deformed. Thus, as in the wheelchair cushion 1 shown in FIGS. 3 and 5, an appropriate counter force for supporting body pressure is generated.

    In the cushion main body 12C, the main body member 14C is formed from a relatively hard material, and the first and second flat members 32 and 34 are formed from a relatively soft material. Both surfaces can be kept soft while maintaining a certain degree of hardness of the main body 12C as a whole, whereby the body pressure can be supported with an appropriate resistance force, and a desired body pressure dispersion effect can be obtained. Can do. Further, the first flat member 32 can be formed so as to be softer than the second flat member 34. In this way, the first flat member 32 is made soft on the front side of the cushion 1, and the feel to the user is somewhat softened, while the second flat member 34 is made on the front side of the cushion 1 to make the user feel softer. The feeling for the user can be changed depending on how the cushion 1 is placed, such as a slightly harder feeling.

    In the wheelchair cushion 1 shown in FIG. 7, the first flat member 32 is provided on one surface of the main body member 14C, and the second flat member 34 is provided on the other surface of the main body member 14C. Therefore, when a body pressure is applied, the longitudinal intermediate portion of the columnar portion 20 of the main body member 14C is elastically deformed and bent. Therefore, as with the wheelchair cushion 1 shown in FIGS. A desired body pressure dispersion effect can be obtained while maintaining the hardness.

    The wheelchair cushion 1 configured as shown in FIG. 8 is limited in bending at both ends of the columnar portions 20 of the first main body member 14D and the second main body member 15D, and thereby the wheelchair shown in FIGS. As in the case of the cushion 1 for use, an appropriate counter force for supporting the body pressure is generated.

    In this cushion body 12D, the first body member 14D is formed of a relatively soft material, and the second body member 15D is formed of a relatively hard material. The cushion main body 12D can maintain an appropriate hardness, and the first main body member 14D can be softened by touching the front surface of the cushion 1, whereas the second main body member 15D can be used as the cushion 1 The feel to the user is hardened by the fact that the table of is displayed, and the feel to the user can be changed by the way of placing the cushion 1.

(Operation / Effect of Example 2)
The wheelchair cushion 1 of the present invention shown in FIGS. 9 and 10 has a property that the body pressure dispersion groove 21 opened in a plane cross shape at the center of the outer surface of the cushion body 12 is softer and deeper than the periphery thereof. When sitting on the seat surface 50 of the wheelchair 5 in FIG. 1, the tailbone part sinks near the center of the body pressure dispersion groove 21 and firmly supports the buttocks in the vicinity thereof. It is possible to prevent the concentration of the user and to support the buttocks stably, and to greatly reduce the burden on the user.

(Operation / Effect of Example 3)
The wheelchair cushion 1 of the present invention shown in FIGS. 11 to 13 is configured such that two split cushion bodies 12E are integrated so as to be foldable by a flexible connecting portion 41 of the cushion cover 4, and five wheelchairs are provided. When the wheelchair 5 is folded while being placed on the surface 50, it follows the left and right folding surfaces (not shown) of the seat surface 50, and is deformed into a front-shaped upside-down inverted V shape so that it is smooth without any trouble. When the wheelchair 5 can be folded, and the wheelchair 5 is seated again and deployed in a state where it can be run, it is deployed as a flat plate on the seating surface 50 as it is, and the convenience is greatly improved. In addition, as shown in FIG. 13, the flexible connecting portion 41 of the cushion cover 4 is bent at 90 ° and arranged so as to lean against the inner corner of the back surface 51 and the side wall of the wheelchair 5. And around the waist Available as protection, further it can also be widely used in other applications, such as pillows and folded in two.

(Operation / Effect of Example 4)
The cushion 1 for a wheelchair according to the present invention shown in FIGS. 14 and 15 has a size and shape that can cover the cushion body 12 from the seating surface 50 to the rear surface 51 of the wheelchair 5. As shown in FIG. 15, the number of the recesses 18 in the range corresponding to the back surface 51 of the wheelchair 5 is more than the number of the recesses 18 in the range corresponding to the seating surface 50. Because it is set in large numbers, it is possible to stably support the buttocks that receive a larger load than the back with a hard cushion, and to support the back that is lighter than the buttocks with a soft cushion. The effect of being able to be produced.

(Conclusion)
As described above, the wheelchair cushion of the present invention is a cushioning technology that makes it possible to achieve the intended purpose even with its new structure, and is easy to manufacture, and exposes irregularities on the conventional surface. Compared to the above, it is possible to maintain a much more stable seating posture, increase durability, make it lighter and cheaper and make it much more economical, and can greatly improve user comfort Therefore, until now, there is a risk of skin pulling, ischemia, and pressure ulcers in body parts where weight is concentrated. This is a good news for wheelchair users who had to give up, as well as cushions for wheelchairs that are comfortable for everyone, without compromising wheelchair folding and operability while driving. Is also highly regarded in the medical industry and the nursing care industry to try to test, use over a wide range, it is expected to be those that continue to spread.

1 Wheelchair cushion
12, 12A, 12B, 12C, 12D Cushion body
12E Divided cushion body
14, 14A, 14B, 14C, 14D Same first body member
15D Same second body member
16 Same flat member
16B same flat member, second flat member,
32 The first flat member
34 Second flat member
36 Same through hole
18, 18B, 18D, 19D Same recess
20 Columnar part
22 The same film
21 Body pressure dispersion groove 4 Cushion cover
40 Same left and right storage bag
41 Flexible connecting part
42 Fastener 5 Wheelchair
50 Same seat
51 Same side

Claims (8)

    Each of the first and second main body members is formed at a position where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of open recesses are regulated so as to align with each other. The surfaces of the first main body member and the second main body member, which are the concave portion forming surfaces, are bonded and integrated by aligning the individual concave portions, and the concave portions are only communicated vertically. In addition, a cushion body is formed that is confined in an independent state without communication between adjacent ones, and a film having air permeability and water permeability is pasted on substantially the entire surface of the cushion body. , Keep the flat outer dimensions within the right and left inner width dimensions and front and rear inner depth dimensions of the wheelchair seat surface to be used, or match the right and left inner width dimensions and front and rear inner depth dimensions of the same seat surface, and the desired vertical thickness dimension In Wheelchair cushion, characterized by comprising as boss was a rectangular thick plate of.     Each of the first and second main body members is formed at a position where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of open recesses are regulated so as to align with each other. The surfaces of the first main body member and the second main body member, which are the concave portion forming surfaces, are bonded and integrated by aligning the individual concave portions, and the concave portions are only communicated vertically. In addition, a cushion body is formed that is confined in an independent state without communication between adjacent ones, and a film having air permeability and water permeability is pasted on substantially the entire surface of the cushion body. , Keep the flat outer dimensions within the right and left inner width dimensions and front and rear inner depth dimensions of the wheelchair seat surface to be used, or match the right and left inner width dimensions and front and rear inner depth dimensions of the same seat surface, and the desired vertical thickness dimension In Body pressure distribution with a predetermined depth dimension that is formed in a rectangular thick plate shape and is opened in the shape of a flat cross or star at the center of the outer surface of at least one of the first body member and the second body member A wheelchair cushion characterized by having a groove formed therein.     Each of the first and second main body members is formed at a position where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of open recesses are regulated so as to align with each other. The surfaces of the first main body member and the second main body member, which are the concave portion forming surfaces, are bonded and integrated by aligning the individual concave portions, and the concave portions are only communicated vertically. In addition, a cushion body is formed that is confined in an independent state without communication between adjacent ones, and a film having air permeability and water permeability is pasted on substantially the entire surface of the cushion body. , Keep the outer dimensions of the plane within 1/2 of the left and right inner width of the wheelchair seat to be used and the depth of the front and rear, or 1/2 of the left and right inner width of the seat and the depth of the front and rear Match and desired In addition to the two divided cushion bodies set to the upper and lower thickness dimensions, an accommodation bag portion that can be loaded by forming the two divided cushion bodies side by side is formed and can be folded in the center between the left and right accommodation bag portions. A cushion for a wheelchair characterized in that a cushion cover having a flexible connecting portion is provided, and one piece of the divided cushion body is inserted into each of the left and right accommodation bag portions of the cushion cover.     Each of the first and second main body members is formed at a position where the other surface extends from one side to the other with the middle thickness as the bottom, and a plurality of open recesses are regulated so as to align with each other. The surfaces of the first main body member and the second main body member, which are the concave portion forming surfaces, are bonded and integrated by aligning the individual concave portions, and the concave portions are only communicated vertically. In addition, a cushion body is formed that is confined in an independent state without communication between adjacent ones, and a film having air permeability and water permeability is pasted on substantially the entire surface of the cushion body. The left and right inner width dimensions and the front and rear inner depth dimensions of the wheelchair seat surface to be used, and the backrest vertical length dimensions are kept within the plane outer dimensions, or the left and right inner width dimensions and the front and rear inner depth dimensions of the same seating surface + the backrest To match the length dimension, wheelchair cushion, characterized by comprising as a rectangular thick plate of which is set to a desired thickness.     The cushion body has the number of recesses and / or recess dimensions in the range corresponding to the wheelchair backrest left and right inner width dimension and the vertical length dimension of the plane outer dimension, and the range corresponding to the wheelchair seating surface left and right inner width dimension and front and rear inner depth dimension. The wheelchair cushion according to claim 4, which is set to be larger than the number of recesses and / or the size of the recesses.     The wheelchair cushion according to any one of claims 1 to 5, wherein the first main body member and the second main body member are set to have different hardnesses relative to one.     The cushion main body in which the first main body member and the second main body member are integrated is provided such that the first flat member is integrated on one surface and the second flat member is integrated on the other surface. Item 7. A wheelchair cushion according to any one of Items 1 to 6.     The wheelchair cushion according to claim 7, wherein the first flat member and the second flat member are set to have different hardnesses with respect to the other.

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