JP2007160117A - Wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheelchair having a flexible seat and a flexible backrest so that these individually can be adjustable to suit each user of the wheelchair. <P>SOLUTION: The seat 20 of the wheelchair has a foldable front web part 21 and a foldable rear web part 26 for supporting the ischium of a person sitting in the wheelchair. The front web part 21 and the rear web part 26 are made of a perforated material having ventilation openings allowing the behind of an individual using the wheelchair to be warm without heating the seat 20. These webs defines opposite front and rear end edges and opposite side edges. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to wheelchairs and relates to individual parts of wheelchairs, in particular to wheelchair seats and backrests.

  Many wheelchairs with various parts have been created in the past. Among the references disclosing wheelchairs and parts thereof, the references are: US Pat. No. 4,132,228, US Pat. No. 4,852,899, US Pat. No. 5,131,672, US Patent document number 5,492,355, US patent document number 5,851,018, US patent document number 5,884,928, US patent document number 6,139,037, US patent document number 6,186,594, US Patent Document No. 6,189,906, US Patent Document No. 6,331,036, US Patent Document No. 6,467,785, US Patent Document No. 6,607,250, and US Patent Application Publication No. 2001/0008335, Patent Application Publication No. 2002/0109399, Patent Application Publication No. 2002/0125678, Patent Application Publication No. 2005/0022296 Patent Application Publication No. 2005/0257966, are incorporated herein by reference.

  Furthermore, the references WO 99/19198, WO 02/36061, WO 2005/109195, JP 10000219, DE 102 34 039 disclose wheelchairs and parts thereof.

  Wheelchairs are used for many purposes, e.g. for those who cannot walk on their own, or for example after a traffic accident or after surgery, during a certain period of training, and Used for people who cannot move. Therefore, a person needs to carry using a wheelchair.

  Furthermore, wheelchair users often suffer from pain or from permanent illnesses or illnesses or injuries that prevent them from standing or walking. Those who have unfortunately difficult disabilities must spend most of their awakening sitting in a wheelchair.

  In this way, many people are confined to wheelchairs many times every day, and often for the long period of their entire life.

  Wheelchairs are provided from hospitals for a limited period of time, for example, while they remain and only for a few weeks thereafter to patients who need them.

  In addition, it is an assortment of airports and amusement parks where wheelchairs are purchased and placed so that they can be used as a service for customers who are seeking or having a sudden need there It has become an indispensable element.

  However, in principle, wheelchairs are used by many people. Some people only have a short “stay”, but many need to use them for a long time. The group of users varies from three-year-old small children to teenagers, young people, mature people and the elderly. This group is very diversified and they differ in age, size, weight, height and chair use, and thus how such individual groups use, ie, wheelchairs Which body part to support, which wheelchair appearance to use, and what purpose (work, school, home, wagon, in their living environment, etc. In addition, there is a need for a wheelchair to be foldable. Other standard wheelchairs are sold individually for their personal use.

  In all cases, people who use these wheelchairs will see how the overall comfort of the wheelchair is gained, its weight, size and how it is handled and applied. Have different needs. Thus, individuals have different needs for weight, size, and handling of wheelchairs, especially for seats, backrests, wheel positions, and the appearance of wheelchairs that can be used. is doing. Individuals have different needs for adjustment and custom production of these parts in order to gain comfort when sitting in a wheelchair. If the need is met, there is a great potential that when an individual is sitting on a wheelchair, the body part of the individual is well supported and the wheelchair can be used to move the person around is there.

  In some cases, a wheelchair user may be injured by attempting to use the brake, and the wheelchair brake may be trapped in clothing.

  It is an object of the present invention to provide a wheelchair which has a flexible seat and a flexible backrest that are individually adjustable to suit the wheelchair user.

  It is an object of the present invention to provide a wheelchair that provides comfort to the user regardless of the user's size, weight and user's ergonomic needs.

  The above objects, advantages, and features, as well as numerous other objects, advantages, and features, which are apparent from the following detailed description of the invention, in accordance with the description of the invention, are described below. Acquired by two inventive features.

(First embodiment of the invention)
The wheelchair seat includes a foldable front web portion for supporting an individual seat bone sitting on the wheelchair, and a foldable rear web portion, wherein the front web portion and the rear web portion are seats. Made of perforated material with vents that can warm the buttocks of individuals using a wheelchair without heating the web, with the web facing opposite edges and It is characterized by constituting a rear edge and a side edge facing each other.

  In a preferred embodiment of the wheelchair seat, the rear web portion of the seat is on the order of 5-50% compared to the flexibility of the front web portion in order to relieve pressure under the seat bone of the individual sitting in the wheelchair. For example, 5-40%, 5-30%, preferably 5-25%, or 25-50%, or 5-10%, 10-15%, 15-20%, 20-25%, 25 Only 30%, 30-35%, 35-40%, 40-45%, or 45-50% exhibit high flexibility.

  The foldable front web portion and the foldable rear web portion may be a polymer, or polyester, polypropylene, polyamide, nylon, cotton fiber, wool fiber, or similar plant or animal fiber, or a combination thereof. The front web portion and the rear web portion can be made of the same or different materials, preferably the rear web portion of the preferred embodiment described above. Can be made from materials that meet the above high flexibility requirements.

  The seat further comprises a pair of casings so that the seat can receive each of the pair of side tubes of the wheelchair frame within the pair of casings.

  The seat further comprises a pair of free or fixed cushions for supporting corresponding portions of the individual butt, the pair of cushions being attached to the seat by their leading edges. A pair of cushions that are repositionable, free or fixed, have an outer cover that is L-shaped and mirror image of each other, and is a water-impermeable and preferably washable material. Yes. A pair of free or fixed cushions can be repositioned using cooperating restraining means, such as cooperating burr-type fixing means, permanent or non-permanent binders or adhesives. is there.

  The web part is constituted by a mesh of water repellent material, and the mesh constitutes a part of the burr-shaped fixing means.

(Second embodiment of the invention)
Foldable made of perforated material that has a vent in the wheelchair backrest, which can warm the back of the individual using the wheelchair without heating the backrest The web comprises a top edge and a bottom edge facing each other, and a side edge of the backrest facing each other.

  The backrest further comprises a girdle or band for supporting the individual's waist, with the girdle or band being provided at the top of the web between the opposing side edges.

  The girdle or band is further applied to secure the backrest between a set of tubes provided along opposite side edges.

  The backrest further comprises a pair of free or fixed cushions to support corresponding portions of the individual's back, the cushion being repositionable with respect to the web.

  A pair of free or fixed cushions are mirror images of each other, have a water impermeable and preferably washable outer cover, burr-type fixing means, or permanent or non-permanent, It can be repositioned using cooperating restraining means, such as a binder or adhesive.

  The web is constituted by a mesh of water repellent material and constitutes a part of the burr-shaped fixing means.

  According to the first and second aspects of the invention, the wheelchair comprises a seat, in which a foldable frame, a pair of wheels, a pair of auxiliary wheels, and an individual using the wheelchair are positioned. The wheel is attached to a frame that allows the wheelchair to stand and move, and the seat and the backrest are fixed to the frame.

  The present invention combines preferred embodiments and will be described in further detail below with reference to the drawings.

  Throughout the drawings, the same reference numeral indicates the same element or part, and in this specification, the same part or element as that previously described with reference to the previous drawings is the same. It is indicated with a reference sign. However, parts or elements that are different from the parts or elements described above that individually serve the same overall purpose are indicated by the same integer values as the parts or elements described above, but are structurally related to the parts or elements described above. A mark for identifying the difference is added.

  FIG. 1 is an overall view of an embodiment of a wheelchair. The wheelchair 10 basically supports the patient or person when moved to the chair or just placed. The seat arrangement 20 and the backrest 30 support the upper body portion of the patient. The wheelchair 10 can be raised and moved using the right wheel 44 and the left wheel 45 having the left and right tires 46 in conjunction with the right auxiliary wheel 40 and the left auxiliary wheel 41. To enable the wheelchair 10 to rotate, a right auxiliary wheel 40 and a left auxiliary wheel 41 are provided. The wheelchair 10 is rotated by rotating the right wheel 44 and the left wheel 45, or with the help of a health care person (nurse, doctor, etc.) or by using the right handle 42 and the left handle 43. It can be moved by a person who can push, pull and / or rotate.

  The wheelchair includes a set of brackets 60 for each of the wheels 44 and 45 in and out of the bracket corresponding to the two extended wheel shafts 50 (see FIGS. 4a and 4b).

  The height of the right auxiliary wheel 40 and the left auxiliary wheel 41 in conjunction with the right wheel 44 and the left wheel 45 determines the inclination of the overall horizontal wheelchair.

  FIG. 2 is a side view of a wheelchair frame part. In order to obtain a rigid and stable structure, the wheelchair 10 basically consists of support tubes, ie vertical support tubes 11, 12, 13, 14 and two horizontal support tubes, ie a lower support tube 16 and a support tube 18. It has a frame made up of the upper pair. The seat arrangement 20 is placed on the upper pair of support tubes 18. Furthermore, the vertical support tubes 11, 12, 13 and 14 are each provided with at least two lateral holes 19. FIG. 5 shows a through hole. These holes, i.e. a set of two holes 19 in each of the support tubes 11 and 12, use the two corresponding wheel brackets, indicated by reference numeral 60 in the following figures, for the right and left wheels. Is used to install and fix. In each wheel bracket, the wheel shaft is indicated by reference numeral 50 in the subsequent figures and is provided around the bracket so that the wheel can rotate. As shown in the figure, the height of the seat 20 above the surface on which the wheelchair is provided is adjustable, for example another set of highs provided in the support tubes 11 and 12. When the holes 19 are used, the height of the sheet 20 above the surface is relatively lowered, and conversely, another relatively low set of holes 19 provided in the support tubes 11 and 12 is used. In another case, the height of the sheet 20 above the surface is relatively increased. In order to obtain the highest position of the seat 20 on the surface on which the wheelchair stands, a set of holes 19 provided at the lowest in the support tubes 11 and 12 are used for mounting the wheel bracket.

  Conversely, in order to obtain the lowest position of the seat 20 on the surface, a set of holes 19 provided at the highest in the support tubes 11 and 12 is used for mounting the wheel bracket.

  In each of the two mounting holes of the wheel bracket, a bolt, pin, lock pin or split pin, denoted by reference numeral 70 in the subsequent figure, is connected to the wheel bracket by two substantially parallel support tubes 11 and 12. It is used to fix firmly. This principle can of course also be used when the wheel bracket of the other wheel is mounted on the opposite side of the wheelchair at the same height above the surface, i.e. the wheel bracket for this second wheel is the first Mounted on the opposite side of the wheelchair at the same height on the height of the wheel bracket for the wheel and on a pair of corresponding support tubes.

  Furthermore, the wheelchair has a set of tubes 17 on which a further frame part, i.e. only one is shown, with a backrest 30 provided thereon.

  FIG. 3 is a partial view of a wheelchair frame provided with wheels. As described to obtain a rigid and stable structure, the wheelchair includes a frame made of support tubes, ie, vertical and horizontal support tubes. In order to obtain a more stable wheelchair structure, the wheelchair is constituted by a frame such as scissors or a connection system 51. Furthermore, using a frame such as scissors or a coupling system 51, the wheelchair can be made compact for transport or storage purposes, i.e. the wheelchair can be a folding wheelchair, so that the wheelchair takes up minimal space take.

  FIG. 4a shows a wheelchair wheel provided perpendicular to the surface. With the wheel bracket 60 described in detail in FIGS. 5a and 5b, the wheel of the wheelchair can be provided on the two corresponding wheel brackets 60 in such a way that the two wheels are positioned parallel to each other. it can. And therefore, the wheel of the wheelchair is positioned perpendicular to the surface on which the wheelchair is placed. In this case, the wheel shaft 50 is provided parallel to the surface. It is a wheel shaft that is parallel to the surface, and therefore a wheel that is perpendicular to a plane or surface (eg, floor or surface soil), ie, the wheel bracket 60 and its subparts on the support tube, eg Is the result of the method of being attached to the tubes 11 and 12 shown in FIG.

  FIG. 4b shows the wheel of a positive camber wheelchair. Using the wheel bracket 60 described in detail in FIGS. 5a and 5b, the wheel of the wheelchair is positioned in such a way that the two wheels are positioned with positive camber, i.e. the two wheels are not parallel to each other, Two corresponding wheel brackets 60 can be provided. In this case, the wheel shaft 50 extends outward from the wheel bracket 60 and is mounted in the wheel bracket 60 and is provided to be slightly inclined with respect to the ground. Thus, the wheel shaft 50 deviates from being strictly parallel to the surface. Indeed, it is the wheel bracket 60 that relatively tilts the wheel shaft 50 with respect to the frame, eg, the vertical tubes 11 and 12 shown in FIG. Thus, each of the wheel shaft 50 and the wheelchair wheel 44 associated therewith is provided with a positive camber having an angle 47.

  The advantage of a positive camber when compared to two wheels arranged in parallel is to maximize the support of the wheels. This is because the distance between two points where two wheels with camber contact the surface (ground, surface, floor, etc.) is between the two points where two wheels standing in parallel are in contact with the surface. It is because it is larger than the distance. In addition, especially if the wheelchair rotates or parks on an inclined surface with an extreme inclination in the direction of the line connecting the two contact points of the two wheels of the wheelchair, the wheelchair will have a positive camber. The wheels they have can resist high surface tilt. Thus, wheels with a wheelchair positive camber, unlike a wheelchair without a camber, have little tendency to tip over when rotating or parked, providing greater safety to individuals in most areas. To do. This wheelchair can therefore be used in most places, including off-road use.

  The deflection is generally an angle 47 in the interval of 1-10 degrees, preferably 3-5 degrees. The selected deflection corresponds exactly to the respective camber angle 47 of the two wheels 44 and 45.

  Figures 5a and 5b show examples of wheel brackets. A sub-part of the wheel bracket 60 includes a wheel bracket body 61 having two pairs of shells 63. Further, a sleeve 64 which is a sub-part of the bracket 60 can be fixed on and around the wheel bracket 60. The wheel bracket body 61 has a recess 66 along with a surface 67, and the wheel bracket body 61 of the preferred embodiment has four to accommodate the four horizontal adjustment positions of the sleeve 64 along the wheel bracket body 61. A recess 66 is provided. The sleeve 64 is thus adjustable along the wheel bracket 60, in particular along the wheel bracket body 61, in the longitudinal direction at four positions, horizontally.

  Therefore, since the wheel is inevitably associated with the position of the sleeve 64, the wheels 44 and 45 can be offset in four steps and backwards horizontally relative to the wheelchair frame, i.e. the sleeve 64 is It can be removed and moved along the horizontal direction of the wheel bracket 60 (four steps and rearward), and can be fixed to the wheel bracket 60.

  A pair of nuts and bolts 62, which are located along a pair of oppositely facing recesses 64, i.e. above and below the wheel bracket body, are provided on the wheel bracket body 61, Therefore, it is used to fix the sleeve 64 to the wheel bracket 60.

  Bolts, pins, lock pins or split pins 70 are made to fit into the holes corresponding to at least two lateral holes 19 in the vertical support tubes 11, 12, 13 and 14 shown in FIG. ing. Thereby, two pairs of shells 63 are used to secure a wheel bracket 60 with a sleeve 64 to a corresponding pair of vertical support tubes, for example tubes 11 and 12 as shown in FIG. . This principle is used to mount both wheels 44 and 45 on the wheelchair 10.

  On the sleeve 64, a bracket 75 (see FIGS. 4a and 4b) for the wheel shaft 50 is provided. The bracket 75 has a nut 77 for fixing the wheel shaft 50 to the wheel bracket 60. For this purpose, the bracket 75 has a hole for receiving the end of the wheel shaft 50.

  The wheel shaft 50 is, for example, a screw rod.

  The wheel bracket main body 61 has a contact surface 74 configured parallel to the outside with respect to the contact surface 72 configured to be inclined outward. As shown in FIG. 5a, the contact surface 72 configured parallel to the outside is closer to the surface 67 than the surface 74 configured to be inclined outward with respect to the surface 67 ′ in FIG. 5b. A hole 69 is provided.

  The other sleeve portion 64 ′ has a contact surface that is inclined inward, whereas one sleeve portion 75 has a corresponding contact surface that is parallel to the inner side. And these contact surfaces face each other.

  Of course, in both of the wheel bracket main bodies 61, the contact surfaces that are parallel to each other and the contact surfaces that are inclined may be exchanged. Surface exchange is applied to accommodate the inner contact surface of the sleeve 64.

  When the inclined contact surface portion is provided, that is, the contact surface 78 that is inclined to the inside of the sleeve portion 64 is attached to the contact surface 74 that is inclined to the outside of the wheel bracket body 61. When done, the position of the wheel shaft 50 in the hole in the bracket 75 then results in the wheel being vertical, i.e. relative to the surface on which the wheelchair is placed, as shown in FIG. 4a. Resulting in having exactly 90 degrees.

  If the inclined surface contact portion is provided on a contact surface configured in parallel, the result is that the state of the wheel shaft has a positive camber, as shown in FIG. 4b. Here, the two cases allow the same result, ie that the wheel has a positive camber. In the first case, that is, the inclined outer surface contact portion is provided in the wheel bracket body 61, while the inner surface contact portion configured in parallel to the wheel bracket body 61 is provided in the sleeve portion. In the second case, that is, an inclined inner surface contact portion is provided in the sleeve portion, while an outer surface contact portion configured in parallel is provided in the wheel bracket body 61.

  Compared to the position of the wheel shaft 50 of FIGS. 1, 3, 4a and 4b, but not according to the invention, when the wheel is required to have a negative camber, as shown in FIG. 4b. When the wheel shaft 50 is positioned closer to the seat 20, the bracket 75 having the sleeve 64 is 180 degrees around the longitudinal axis before being attached to the wheel bracket body 61 of the wheel bracket 60. It must be rotated.

  For example, when these parts (sleeve 64 and bracket body 61) are molded from ABS or from other metal or plastic forms, they correspond to the holes 69 and sleeve 64 of the bracket body 61. The purpose of the similarly shaped hole is to minimize the material cost and to obtain a lightweight structure of the wheel bracket 60.

  The wheel bracket body 61 has a vertical ridge 68 on its surface 67. Accordingly, the sleeve 64 has complementary vertical ridges on its inner surface adapted to attach to the vertical ridges 68 on the outer surface 67 of the wheel bracket body 61. Thus, when the sleeve 64 is provided on the wheel bracket body 61, when the two cooperating ridges are fixed using the nut and the bolt 62, the sleeve 64 is relative to the bracket. Along the body 61 and in particular, but not around, it helps to maintain the mounting position to avoid moving.

  FIG. 5c shows three possible applications of Applicant's wheel bracket in three positions. In general, the wheel shaft 50 can be provided beyond or on the tube relative to the frame portion, eg, the tube in which the wheel bracket 60 is provided, as shown in FIG. In the example of FIG. 12, the wheel shaft 50 is provided beyond the frame portion.

  The first application is a 0 degree camber for the wheel to be perpendicular to the surface, the wheel bracket 60 being provided with an upward arrow display 6. The inner surface 1 of the shell 7 is attached to the outer surface 2 of the bracket body 61. The shell 7 is mounted so as to face away from the wheelchair. The wheel shaft 50 can be mounted beyond or below the frame portion of the wheelchair.

  The second application is the preferred three-degree camber of the wheel, in which the wheel bracket 60 is provided with an upward arrow display 6. The surface 1 of the shell 7 is attached to the outer surface 4 of the bracket body 61. The shell 7 is mounted so as to face away from the wheelchair. The wheel shaft 50 can be mounted beyond or below the frame portion of the wheelchair.

  The third application is a negative three-degree camber of the wheel, in which the wheel bracket 60 is provided with a downward arrow display 6. The surface 1 of the shell 7 is attached to the outer surface 4 of the bracket body 61. The shell 7 is mounted so as to face away from the wheelchair. The wheel shaft 50 can be mounted beyond or below the frame portion of the wheelchair.

  For the three applications, it is further possible that the shell 7 is instead attached to face the wheelchair.

  6 and 7 show an embodiment of a wheelchair brake arrangement. A brake handle 82, such as a rod or tube, can be moved between two rest positions. The two rest positions are the brake position and the non-brake position, the latter allowing the wheel to rotate if desired. The brake handle 82 has a first pivot axis for allowing the brake handle 82 to pivot and be constrained between a first position and a second position corresponding to two rest positions. It is journaled pivotally with respect to the body plate 85 using the first pivot joint 90 that constitutes it.

  The 1st pivot joint 90 is comprised by the lock pin or the screw | thread so that it can pivot.

  The brake configuration is separated from the brake handle rod 82 and is constituted by a brake bracket 80 having an upper leg plate 84, a body plate 85, and a lower leg plate 86. V-shaped plates or brake bodies 89, 89 ′ and 89 ″ are provided on the body plate 85 and parallel to the plane thereof. Such a plate brake body 89 has a V-shaped recess inside.

  The body plate 85 has a notch 81, and the brake handle 82 has a brake body 89, 89 ′ between two restraining positions in the notch, the brake position and its free position (ie, non-brake position). And 89 ″. In the brake position, the brake contact surface 87 (on the right half 89 ″ of the V-shaped plate 89) is in contact with the part of the tire corresponding to the wheel 46, so that this wheel is in contact. Due to the accompanying braking force, it is prevented from rotating. Brake bodies 89, 89 'and 89', like the first pivot joint 88, when the handlebar is subject to this plate 85 in the force of either the braking direction or the free non-braking direction. 'Pivots around pivot center 88. The pivot center 88 is comprised of a lock pin or screw so that the pivot mechanism portion, lock pin or screw can couple the brake bodies 89, 89 ′ and 89 ″ with the body plate 85. Yes.

  When the brake handle 82 is moved to be placed in the non-brake position, i.e. the free position, the right half 89 '' (with the brake contact surface 87) of the brake bodies 89, 89 'and 89' '. Is provided inside the outer contour of the body plate 85, i.e., in this situation, designed to ensure that the position of the V-shaped plate 89 is on the rear face of the lower leg plate 86. It has been. This allows hands, for example, other body limbs or clothing that subject the tangential component to a wheel that is not currently being braked, to the wheel and brake body 89, 89 ′ and 89 ″ or body plate 85. And is guaranteed not to be caught between.

  Furthermore, because of the construction of the brake bodies 89, 89 ′ and 89 ″, for example, a V-shaped plate, the left half 89 ′ of this plate is independent of the position of the body handle 85 regardless of the position of the brake handle. It is guaranteed to always be retained within the outer contour. This ensures that personal clothing is not caught by this portion 89 'of the V-shaped board.

  In other words, the brake body includes a second pivot joint 88 that constitutes a second pivot axis to allow the brake body to pivot between a brake position and a non-brake position. In use, it is journaled pivotally relative to the body plate 85, and in the braking position, the brake contact surface 87 contacts the tire portions of the wheels 44, 45 of the wheelchair. The brake handle 82 is V-shaped to convert the pivoting of the handle 82 between the first position and the second position into the pivoting of the brake body between the brake position and the non-brake position, respectively. It is caught in the recess.

  In the brake position, the brake contact surface 87 extends beyond the outer periphery of the main body plate 85. In other words, in the non-brake position, the brake main body 89 is provided entirely on the outer periphery of the main body plate 85. So that hands, other limbs or clothing are not caught between the brake body 89 and the wheels 45 or 45.

  8 and 9 show an embodiment of a gadget bracket for a wheelchair. The bracket 100 is a holder 103 with or without an entertainment tool 102, such as a personal computer (desktop or palmtop), iPOD, GPS receiver, mobile phone, MP3 player, MP3. It is a bracket for holding a radio optionally equipped with an MP3 player. Often, such a holder 103 is distributed with the gadget.

  The bracket 100 can be attached to the frame 112 of the wheelchair 10, for example, a vertical or horizontal support tube, or an armrest using screws or bolts and nuts. The hole 104 in the bracket 100 has a diameter that allows screws or bolts to be mounted in and through the frame 112 of the wheelchair 10.

  The bracket has two through holes 106, 108 for receiving a holder 103 having a rod or shaft, which can be received in these two holes 106 and 108.

  On or in such a holder 103, a gadget 102, for example a personal computer, iPOD, GPS receiver, mobile phone, MP3 player, can be placed and / or fixed.

  Further, the bracket has a recess 110. Recess 110 may allow bracket 100 to receive a portion of support surface 112 (eg, a wheelchair frame portion).

  Alternatively or additionally, the recess 110 allows a wheelchair user to place a cable, wire or bundle of wires therein. Thereby, the cables, wires and wires can be fixed in the recess 110 and between the recess 110 and the support surface 112, and damage can be mitigated.

  FIG. 10 is an embodiment of a wheelchair backrest configuration. As shown in FIG. 2, a backrest 30 is mounted on a set of tubes 17, only one set being shown. This attachment is performed using a girdle or band 34, and the girdle or band 34 is wound around the tubular support 20.

  For example, it may be advantageous for the two handles 42 and 42 to be removed before and during installation. On the backrest 30, a pair of free or fixed cushions are fixed for supporting the part of the back facing these cushions. These cushions are removable and securable to the backrest 30 using Velcro tape or spring locks or other securing means that achieves a removable securing purpose. In addition, the wheelchair backrest configuration includes a girdle or band 34 that serves two purposes. The two purposes are to secure a backrest 30 on a set of tubes 17 (see FIG. 2) and to support a waist that refers to a small part of the back of a person using a wheelchair. is there.

  The backrest 30 is made of a foldable web. This is necessary when the wheelchair can be folded without removing the backrest. This material is, for example, a layer of nets bonded or sewn together, with the advantage that the individual's back can be well ventilated. That is, moisture and warmth from a warm body or sweat can easily escape through and away from the holes in the net.

  FIG. 11 is an embodiment of a seat configuration of a wheelchair. The seat 20 is made up of two foldable web portions, a foldable front web portion 21 and a foldable rear web portion 26. The rear web portion 26 of the seat is about 5 to 50%, for example, 5 to 40% compared to the flexibility of the front web portion 21 in order to relieve pressure under the sciatic bone of an individual sitting in a wheelchair. 5-30%, preferably 5-25%, or 25-50%, or 5-10%, 10-15%, 15-20%, 20-25%, 25-30%, 30- Only 35%, 35-40%, 40-45%, or 45-50% show high flexibility.

  The foldable front web portion 21 and the foldable rear web portion 26 comprise polyester, polypropylene, polyamide, nylon, cotton fibers, wool fibers, or similar plant or animal fibers, or combinations thereof or similar. The front web portion and the rear web portion may be the same or different materials, preferably the rear web portion of the preferred embodiment described above. It may be made from a material that satisfies the above high flexibility requirements.

  The web material or the material of each web part is advantageously constituted by layers of nets that are bonded together or sewn, and has the advantage that the individual's buttocks can be well ventilated, i.e. Moisture and warmth from a warmed body or sweat can easily escape away from the net and body through the holes in the net.

  A pair of free or fixed cushions 22 and 24 on the seat 20 are fixed for supporting the part of the heel facing these cushions. These cushions are removable and fixable to the seat 20 using Velcro tape or spring locks or using other fastening means that achieve the purpose of the removable fastening. Further, the sheet is provided with a pair of casings 28. This is applied so that attaching the seat helps the seat support structure. On each of the upper pairs of support tubes 18, another tube 15 (see FIG. 2) can be mounted parallel to them. When a pair of casings 28 are pushed into a pair of tubes 15, a sheet material or web is attached between the two tubes 15.

  Alternatively, as part of the sheet material, the pair of casings 28 is pressed against the entire surface of the pair of tubes 15.

  Thus, in both cases, the sheet is suspended between the two tubes 15. Alternatively, the two tubes 18 can reposition the two tubes 15 and then simply apply these two elongated tubes 18 when the web is attached between the two tubes 15. be able to.

  Each tube 15 is attached when used in conjunction with the corresponding support tube 18 as described to be parallel to the corresponding support tube 18.

  The attachment, i.e. the distance between the tube 15 and the support tube 18, is made using a three spacer configuration fit as shown in FIG.

  Alternatively, the attachment of the tube 15 and the support tube 18 to each other is made using a conformation in the form of three simple rectangular spaces providing a plate.

  Alternatively, the tube 15 can grip the support tube 18 (above) using a spring lock known in the art for such purpose.

  In all cases, a seat 20 with cushions, if any, rests on the upper pair of support tubes 18.

  The foldable web described is made of a perforated material having a vent that allows the back of a person using the wheelchair 10 to be warm without heating the seat 20. ing.

  The sheet comprises opposite front and rear edges and opposite side edges.

  As described, the seat comprises a pair of casings 28, the webs of which are in a pair of casings, and a pair of side tubes 15 or (15 in the frame of the wheelchair 10). (If omitted) allows each of the 18 side tubes to be received.

  The cushion 32 is repositionable relative to the web by its leading edge and each other's mirror image. Each cushion has an outer cover that is a water impermeable material, which is preferably washable.

  The cushion can be repositioned using cooperating burr-shaped fastening means or cooperating restraining means such as permanent or non-permanent binders or adhesives.

  These characteristics of the cushion 32 also apply to the cushions 22 and 24. However, the cushions are L-shaped as shown.

  The mesh of water repellent material constitutes a web, and the mesh constitutes a part of the burr-shaped fixing means.

  The design of the seat part of a wheelchair has two main different features from a functional point of view compared to other wheelchairs: 1) the seat tube 15 and / or 20 is horizontal And 2) a sheet having a shape that combines elasticity and ventilation.

  In particular, the seat 20 support of the wheelchair 10 comprises a set of elongated side tubes 15 or 18 that constitute the opposite side tubes of the frame of the wheelchair 10. These side tubes serve to attach the seat 20 to the wheelchair 10.

  Each of these tubes, with the sheet material suspended between and above it, constitutes the front and rear ends of the sheet 20.

  Each of these side tubes has a downward slope adjacent to the rear end. For this reason, the rear part of the individual who uses the wheelchair seat 20 sits lower on the rear part 26 when compared to the front part 24 of the seat 20.

  The downward inclination of the tube is usually in the interval of 1-8 degrees, most preferably 5 degrees, preferably 2, 3, 4, 6 and 7 degrees.

  The downward inclination of the tube is provided at a distance of 10 to 20 cm from the rear end, and the most preferable inclination is 13 cm, preferably 11, 15, 17 and 19 cm.

  When a person's body sits on a chair, the person needs to have a different form of support because it is a combination of hard bones, skeletons and muscles. Further, when sitting, the skeleton partially penetrates the body and has a thin fabric layer between the seat surface and the skeleton, which is applied to the rear portion 26 of the seat area. A person has muscles between the large upper and lower limb bones and the seat, which are supported when sitting in the front 24 of the seat area. The part penetrating through the body is primarily a sciatic nodule, called the so-called ischia. Due to the pelvic tilt and the sciatic support, the sacrum contacts the seat surface as well.

  In front of the pelvis we have the upper bones of the thighs and feet. This bone is covered by muscle and has almost no pressure as the muscle tissue is loaded from the body.

  In order to prevent tissue damage in the pelvic region, it is important to provide a soft and flexible support that can be combined with ventilation to allow weight distribution over the largest possible area. To do. Otherwise, the risk of floor rub increases sharply. The weight distribution places little pressure on the weakest parts, the sciatic nodules and the sacrum. On the other hand, ventilation reduces heating and moisture. High temperatures combined with normal body sweating can weaken tissues and increase the risk of floor rubs.

  The following refers to FIG. 11a.

  The protruding portion of the sciatic nodule is 7.5 cm as shown here on the left side. It is an average measurement.

  The normal distance between the posterior lowest spine and the middle of the sacrum for sciatic nodules is between 11-15 cm in adults.

  Since the sciatica is the lowest part when sitting, it is important to give them a space in the vertical line and provide a large contact area. That means that the rear should be lowered.

  The following refers to FIG.

  On the other hand, the front portion of the seat needs to be raised so that the thigh does not protrude and is covered with muscles.

  The importance of wheelchair seat design is to make room for the ischia.

  On the seat frame, i.e. on a set of horizontal tubes 15 or 18, they are applied at a 5 degree tilt and from the back tube 17, i.e. 13 cm from the rear edge of the seat. It is. The lowest part of the seat tube is lower.

  The back of the cushion is made of an elastic version of net mesh.

For positioning and supporting the thigh, the front part of the seat is a U-shaped design. It is packed with 1.5 cm foam enough to achieve high standards, and the front part of the seat corresponds equally to the different body proportions of individuals using the wheelchair 10 Thus, the depth can be adjusted by a difference of 5 cm.
For ventilation and weight distribution,
1) The rear part of the seat has a net mesh, through which air can pass,
2) The elasticity of the net mesh helps to distribute the weight equally and uniformly,
3) The front portion of the seat is higher to further promote body weight distribution. The ergonomic shape of this sheet creates a complete outline of the foundation of the human body skeleton.

  The material properties described above with respect to the sheet 20 may be applied to the backrest 30 as well, for example, the backrest 30 web can be made from an elastic version of the net mesh as well.

  Figures 12, 13, 14 and 15 show examples of wheelchair frame configurations. These figures show how the wheel bracket can be fixed to a wheelchair. As the wheel bracket 60 is secured to the wheelchair frame and in what direction, the wheel shaft 50 extending outside the bracket 75, which is part of the wheel bracket 60, is accordingly adapted. , Relatively provided.

  As shown in FIG. 12, the sleeve 64 to which the bracket 75 is attached (the sleeve 64 and the bracket 75 are both sub-parts of the bracket 60) is such that the wheel shaft 50 is relatively close to the rear of the chair. And placed in a position such that it is provided beyond the center of gravity of the wheel bracket body 61 (see FIGS. 5a and 5b).

  As shown in FIG. 13, another frame configuration is applied. The bracket 60 is provided only in one vertically oriented frame, and the bracket is oriented so that the wheel shaft 50 is positioned relatively close to the rear of the chair. . As shown in the figure, four bolts and nuts are used to fix the bracket 60 to the frame.

  As shown in FIG. 14, still another frame configuration is applied. In particular, this figure shows a side portion of a wheelchair for supporting the wheel of a wheelchair.

  The side portion 120 includes two horizontal tubes 121 and 122. These tubes have opposite ends 123 and 124.

  In addition, the side portion of the wheelchair has a vertical distance tube 14 ′ ″ that interconnects the first elongated tube 121 and the second elongated tube 122. Therefore, the vertical distance tube 14 '' 'holds the first elongated tube 121 and the second elongated tube 122 vertically and is spaced apart and parallel to each other.

  As shown in the preferred embodiment, the vertical distance tubes 14 ′ ″ connect the first elongated tube 121 and the second elongated tube 122 to each other at their pair of second ends 124.

  In addition, the side portion of the wheelchair on the left side of the figure includes a U-shaped wheel bracket support tubular structure 126 that comprises two tubular ends 127 and 128 that are substantially parallel and project outward. Have.

  The wheel bracket 60 can be fixed on the U-shaped wheel bracket supporting tubular structure 126. Accordingly, the wheel shaft 50 is repositionable along the vertical portion of the U-shaped tubular structure 126 behind the bracket 60.

  The first and second sets of male and female guide means are applied to the side portions of the wheelchair. The first set of male and female guide means has, at its first end 123, the first elongated horizontal tube 121 and one of the two tubular ends 127 and 128 projecting outward in parallel. , Interconnected.

  The second set of male and female guide means has at its first end 123 a second elongate horizontal tube 122 in parallel with the other 128 of the two tubular ends 127 and 128 projecting outward. Has been applied to interconnect. These connections allow the U-shaped wheel bracket support tubular structure 126 to be shifted horizontally relative to the first elongated horizontal tube 121 and the second elongated horizontal tube 122.

  In order to lock the U-shaped wheel bracket supporting tubular structure with respect to the first elongated horizontal pipe 121 and the second elongated horizontal pipe 122, the side portions of the wheelchair include first restraining means 130 and second restraining means 131. have. As an example, each of the restraining means 130 and 131 is a bolt nut, pin or lock pin. The bolt or pin cooperates with a plurality of holes provided in the first and second sets of male and female guide means.

  These holes allow the locking portion 135 and the U-shaped wheel bracket support tubular structure 126 to be positioned, locked and ultimately constrained in a number of fixed positions. Therefore, the wheel bracket 60 can be restrained at a number of fixed positions. Thus, the wheel shaft 50 and hence the wheel can be constrained at multiple fixed positions.

  The wheelchair side portion further includes a backrest fixing portion 17 '' 'portion. This backrest fixing portion 17 ′ ″ is coupled to the first elongated horizontal tube 121 adjacent to the tube end 123 in Example 1 as shown in the drawing.

  Instead, that is, in Example 2, the backrest fixing portion 17 ′ ″ is coupled to the first elongated horizontal tube 121 at the first end of the tube 121.

  However, in Example 3, the backrest fixing portion 17 ′ ″ portion is further coupled to the right side of the drawing, that is, further adjacent to the second end 124 of the tube 121, as compared to the one shown in the drawing. It is also possible.

  The backrest fixing portion 17 ′ ″ portion has a lock portion 135. As shown in the above three examples, the lock portion is provided so that the backrest fixing portion 17 ′ ″ portion can be rearranged and locked with respect to the horizontal tube 121.

  The lock part 135 cooperates with the first restraining means 130. Accordingly, the lock portion 135 locks and restrains the U-shaped wheel bracket supporting tubular structure 126 and the lock portion 135 together with the horizontal pipe 121.

  The side part shown, for example the right side part, is mirrored to obtain the other side part of the wheelchair (ie the left side part).

  The bracket 60 is provided only in one of the vertically oriented frame portions, and the bracket is further away from the wheel shaft 50 when compared to the above figure, i.e. with respect to the rear of the wheelchair. Oriented to be further spaced apart. As shown, four bolts, optionally with nuts, are utilized to secure the bracket 60 to the frame portion 126, ie, the U-shaped wheel bracket support tubular structure.

  As shown in FIG. 15, yet another frame configuration is applied. The bracket 60 is provided only on one of the vertically oriented frame portions, and the bracket is closer to the wheel shaft 50 when compared to the previous figure, i.e. further adjacent to the rear of the wheelchair. Oriented to be provided. As shown, three bolts, optionally with nuts, are utilized to secure the bracket 60 to this frame configuration.

  In general, it applies to FIGS. 12, 13, 14 and 15 as in FIG. 1, and a bracket 60 is provided so that it can be fixed in any position along the vertical frame portion shown. Alternatively, the bracket 60 can be repositioned. Alternatively, the height or distance of the wheel shaft 50 (provided on the sleeve as part of the bracket 60) can be adjusted relative to the position of the seat configuration 20 and to the wheelchair frame without exceeding the surface. It is. In this way, the seat height above the surface can be adjusted upward or downward. This is very practical because the height of the seat 20 relative to the surface can be adjusted to match the height of the person using the wheelchair. For example, for a tall person, the position of the seat 20 can be fixed to be relatively high, whereas for a short person or child, the position of the seat 20 is on the surface on which the wheelchair is placed. It can be adjusted to be close. Alternatively, it is easier for the child to put the foot on the ground (surface).

  In this specification, terms such as top, bottom, head, bottom, horizontal, vertical, etc., unless otherwise indicated, are typically used for wheelchairs placed on substantially flat and horizontally supported surfaces. Means the direction or position.

1 is an overall view of an embodiment of a wheelchair. It is a side view of the frame components of a wheelchair. It is a fragmentary figure of the wheelchair frame provided with the wheel. The wheel of a wheelchair provided perpendicular to the surface is shown. Shows the wheel of a wheelchair with a positive camber. It is an Example of a wheel bracket. It is an Example of a wheel bracket. It is an Example of a wheel bracket. An example of a wheelchair brake configuration is shown. An example of a wheelchair brake configuration is shown. An example of a gadget bracket for a wheelchair is shown. An example of a gadget bracket for a wheelchair is shown. It is an Example of the backrest structure of a wheelchair. It is an Example of the seat structure of a wheelchair. Show how your body sits in your seat. Show how your body sits in your seat. An example of a frame configuration of a wheelchair will be shown. An example of a frame configuration of a wheelchair will be shown. 1 shows an embodiment of a wheelchair frame configuration, in particular a side portion of a wheelchair for supporting wheelchair drive wheels. An example of a frame configuration of a wheelchair will be shown.

Claims (19)

Wheelchair (10) seat (20),
A foldable front web portion and a foldable rear web portion for supporting an individual seat bone sitting in a wheelchair;
Made of perforated material with vents that can warm the buttocks of individuals using wheelchairs without heating the seat (20);
Sheet (20), characterized in that the web comprises opposite front and rear edges and opposite side edges.   In order for the rear web part to relieve pressure under the seat bone, compared with the flexibility of the front web part, it is about 5-50%, for example, 5-40%, 5-30%, preferably 5-25%, or 25-50%, or 5-10%, 10-15%, 15-20%, 20-25%, 25-30%, 30-35%, 35-40%, The sheet (20) according to claim 1, wherein the sheet (20) exhibits high flexibility by 40-45% or 45-50%. The seat further comprises a pair of casings (28);
A pair of casings (28), wherein the seat allows each of a pair of side tubes (15) of the frame of the wheelchair (10) to be received within the pair of casings. The sheet (20) according to 2. A pair of free or fixed cushions (22, 24) for supporting corresponding portions of the individual's buttocks;
A seat (20) according to any preceding claim, wherein the cushion (22, 24) is repositionable relative to the seat by its leading edge.   A seat (20) according to any preceding claim, wherein the pair of free or fixed cushions are L-shaped and mirror images of each other.   A seat (20) according to any preceding claim, wherein the free or fixed pair of cushions has an outer cover, which is a water-impermeable and preferably washable material.   The free or fixed pair of cushions can be re-engaged using cooperating burr-type fixing means or cooperating restraining means such as permanent or non-permanent binders or adhesives. A sheet (20) according to any preceding claim, wherein the sheet (20) is positionable.   A sheet (20) according to any of the preceding claims, wherein the web portion is constituted by a mesh of water repellent material.   The sheet (20) according to claim 8, wherein the mesh constitutes a part of the burr-shaped fixing means. Wheelchair (10) backrest (30),
Foldable made of perforated material with vents that can warm the back of individuals using the wheelchair (10) without heating the backrest (30) Has a web,
A backrest (30), characterized in that the web comprises opposing top and bottom edges and opposing side edges of the backrest (30). The backrest (30) further comprises a girdle or band (34) for supporting the individual's waist,
A backrest (30) according to claim 10, wherein a girdle or band (34) is provided at the top of the web between the facing side edges.   A backrest according to claim 11, wherein a girdle or band (34) is applied to further secure the backrest (30) between a set of tubes (17) provided along the opposite side edges. (30). A pair of free or fixed cushions (32) for supporting corresponding portions of the individual's back;
A backrest (30) according to any of claims 10 to 12, wherein the pair of cushions (32) are repositionable relative to the web.   A backrest (30) according to any of claims 10 to 13, wherein the free or fixed pair of cushions are mirror images of each other.   A backrest (30) according to any of claims 10 to 14, wherein said free or fixed pair of cushions has an outer cover, which is a water-impermeable and preferably washable material. .   The free or fixed pair of cushions can be repositioned using burr-shaped fastening means or cooperating restraining means such as permanent or non-permanent binders or adhesives. The backrest (30) according to any one of claims 10 to 15, wherein:   A backrest (30) according to any of claims 10 to 16, wherein the web is constituted by a mesh of water repellent material.   The backrest (30) according to claim 17, wherein the mesh forms part of a burr-shaped securing means. Wheelchair (10)
A foldable frame,
A pair of wheels (44, 45) and a pair of auxiliary wheels (40, 41);
A seat (20) and a backrest (30), in which an individual using the wheelchair (10) is positioned;
The pair of wheels are attached to a frame so that the wheelchair (10) can be raised and moved;
Wheelchair (10) according to any of the preceding claims, wherein the seat (20) and the backrest (30) are fixed to the frame.

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