JP4683983B2 - Wheelchair sled gear - Google Patents

Description

    The present invention has all the fields related to the technology of moving a soft ground with a wheelchair as a technical field, and particularly of course, a field of manufacturing a wheelchair sledging device that can move smoothly on snow. From the field of providing and selling equipment and equipment necessary for its production, materials necessary for those materials, machinery and parts, such as wood, stone, various fibers, plastics, various metal materials, etc. Field, the 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 equipment, the electricity and the energy that is the energy and the oil source Fields generally referred to as industrial machinery, such as those in general, and testing, researching those facilities and instruments, fields related to their display, sales, import / export, As a result of their use, facilities for making them, fields related to the collection and transportation of waste generated by the operation of equipment, recycling fields where these wastes are efficiently reused, and other current assumptions There is no technical field that is not related to new fields that cannot be done.

(Viewpoints)
In recent years, with the rapid aging of society in Japan, the development of a living environment where elderly people and people with disabilities can move safely and smoothly, such as barrier-free buildings and transportation facilities, has been promoted in various fields. On the other hand, various nursing care services such as nursing care facilities for the elderly and nursing taxis, which show increasing needs year after year, have been commercialized one after another, aiming to maintain and improve the independence and physical and mental functions of people with disabilities. It is very useful for reducing physical and physical burdens.
However, there are still many issues that remain in individual situations, such as day service provided daily and pick-up by a nursing taxi. For example, in the snowy season in winter, there are obstacles around the house. When an elderly person who cannot perform snow removal work tries to use day service pick-up and nursing taxi, a helper who headed for pick-up parked the pick-up vehicle on the nearby street where the snow is being removed to the entrance If you have to pick up on foot and the user must use a wheelchair at that time, the wheel will sink into the snow where the snow is not removed, making it almost impossible to move. It was necessary to carry the user back to the pick-up vehicle without stopping, and in such a situation, a heavy burden was imposed on the helper.

(Conventional technology)
In order to solve these problems, various snow equipments for wheelchairs have already been developed, such as commercially available snowboards as disclosed in the "Attachment on snow" invention of Japanese Patent Application Laid-Open No. 2004-261508. And a ski board fixed to a shoe sole-shaped bottom plate provided at the bottom between the left and right wheels of the wheelchair so as to be able to slide on the snow or disclosed in Japanese Patent Application Laid-Open No. 2000-232996 Legs with a support plate fixed to the left and right frames of the wheelchair body, an operating lever and a lot for attaching and lowering the ski, and a ski plate fixed to the support plate as in the invention As shown in the figure, it is possible to move in correspondence with roads where a step occurs due to snowfall or freezing.

However, the previous “Snow Traveling Attachments” and “Care Wheelchair Snow Road / Soil Traveling Equipment” use snowboards and skis that are much smaller than the left and right widths of the wheelchair. Therefore, it is difficult to ensure stability when sliding on the snow, and those for sports demanded the property that left and right edges are raised and turned into sporty and thrilling when turning When turning to the left or right, there is a risk that it will tilt and roll over relatively easily, and the structure of the wheelchair itself will require structural strength to support the seated user on the snow. In a wheelchair having a wheelchair, unnecessary vibrations are directly transmitted, and there is no denying that the user may feel unnecessary anxiety.
(1) Japanese Patent Application Laid-Open No. 2004-261508 (2), Japanese Patent Application Laid-Open No. 2000-232996

(Awareness of problems)
As described above, the present invention is based on the idea that the wheelchairs that have been developed so far are slid and moved on the snow, each of which is equipped with an auxiliary attachment for moving on the snow on the skeleton of the wheelchair. In other words, while driving on snow, the main structure that supports the weight of the seated user is requested from the wheelchair, and vibrations when moving on soft and unstable snow are caused through the wheelchair. In addition, there is a sense of anxiety that it is transmitted directly to the user's body, and in the structure where a snowboard or ski board with a width smaller than the width of the wheelchair is attached, it is inadvertent when trying to change direction left and right There is also concern about the possibility of rolling over, and the actual situation is that there has been a continuing demand for the development and practical application of new snow slides that can solve these problems.

(Object of invention)
Therefore, the present invention can realize stable snow-sliding performance so that wheelchair users can use it with more peace of mind, is highly safe, and is lightweight and compact in consideration of wearing, storage before and after use, and transportability. From the judgment that it is not possible to provide new snow skiing technology that can reduce the burden on the caregiver with the function to make it easier, we started its development and research quickly, and many trial and error over many years As a result of repeating trial manufacture and experiment, this time, we finally succeeded in realizing a wheelchair sled tool with a novel structure. In the following, together with an embodiment representing this invention shown in the drawings, its configuration Will be described in detail.

(Structure of the invention)
As will be clearly understood from the embodiments of the present invention shown in the drawings, the wheelchair sled tool of the present invention basically comprises the following configuration.
In other words, it has a flat shape and strength sufficient for placing a wheelchair, and the entire back surface with the front end side as a ridge tip shape is a smooth finish surface, and on the front side, the same front end side as the previous heel tip shape forming side A plate-like body provided with parallel guide grooves with a wheelchair wheel interval that extends from the rear end side to the middle of the front end side along the right and left side edges that are orthogonal to each other. The front main body part corresponding to the side where the guide groove stops in the middle of the surface, and the rear end side belong, and both the guide grooves are transverse. When the front main body portion is developed in a flat plate-like posture that can be used as a flange with respect to the rear main body portion, the trailing edge of the sliding surface of the front main body portion While sliding, extending slightly so that it overlaps slightly below the front end of the sliding surface of the rear body. On snow clearance between the rear end and the rear body portion sliding surface the front end of the main body portion sliding surface is possible prevent from being penetrated, restore to freely and the original plate member folded via a hinge mechanism between them A locking mechanism for maintaining the folded state on the side opposite to the hinge mechanism arrangement side, and a gripping mechanism for folding that also serves as a rope for wearing near the center of the left and right at the same place. while providing a handle bracket to the front between the right and left guide groove on the surface side of the main body portion and / or the rear body portion, clamping belt mechanism to the place of mounting the wheelchair enabling temporary fixing is provided to enable storage when not in use Furthermore, fixed or stowable traveling wheels are disposed above the sliding surface and exposed in the vicinity of the four corners where the entire sliding surface of the front and rear main body portions is balanced. Of the wheel The circumference is wheelchair sled member to gist configuration shall become provided so as arranging the soft sealing portion for snow.

    As described above, according to the wheelchair sled tool of the present invention, the entire back surface having the tip side of the sled heel is a smooth finish surface, and a wheelchair caster (front wheel) and a large wheel are mounted on a flat surface on which the wheelchair can be mounted. From the fact that the plate-like body formed with a guide groove that can guide and place the wheel (rear wheel) is cut in half near the front and rear center, and its front body part and rear body part are connected by a hinge mechanism, When storing and transporting, it can be folded in half and converted into a compact package, and when used, it can be quickly developed into a flat plate shape. The gap between the hinge mechanism intervening parts can be used as a configuration that prevents the snow from getting stuck inadvertently, so that the joints do not become a resistance during sliding Has been given The wheelchair guided and placed on the plate-like body of the wheelchair sled tool of the present invention developed in a flat plate shape has its front and rear wheels restricted by the guide groove, so that it is unintentionally moved left and right. Since it is firmly fixed by the tightening belt mechanism that is blocked and can be operated easily, there is an advantage that a high sense of unity can be obtained, and a flat area exceeding the front and rear, left and right dimensions of the wheelchair is secured. Therefore, while sliding on snow, the sled tool plate itself can carry the load of wheelchair users without excess and deficiency, and it can realize excellent stability and sliding performance, depending on the amount of snow accumulation You can freely push the back of the wheelchair like normal use or tow the front using a string, etc. Security and high safety for the elderly In which a marked effect of bets can be secured at once.

In implementing the present invention having the above-described configuration, the best or desirable mode will be described.
The plate-like body functions so as to easily and easily move on the snow when the caregiver or the like pulls the rope connected to the head proper place on the wheelchair with the user seated. The wheelchair must remain seated by the user and must have sufficient dimensions, shape and strength so that it can be safely slid and moved on the snow. It should be small enough to be portable and lightweight enough to be carried by one person, and when it is deployed to form a sled, the wheelchair should be able to get on and off relatively easily.

    The front body part receives the load of the boarded wheelchair separately from the rear body part, and supports and guides the front part so that the top part does not sink into the snow when sliding on the snow. It is assumed that the front end of the rear body part is folded or connected to the rear end so that it can be disassembled. As shown in the examples described later, it must be formed on the sliding surface of the tip of the rising sled, reaching from the upper rear end to the middle of the front end, and parallel to the wheelchair on the left and right wheels. It must be made to form.

    The rear body part shares the load of the mounted wheelchair with the front body part, stably supports the wheelchair on the snow, and fulfills the function of sharing the rear part of the plate-like body to enable smooth sliding The bottom surface should be formed on a smooth sliding surface that is continuous with the bottom surface of the front body, and should have a hinge mechanism or a disassembly mechanism that can be folded or divided with respect to the front body. Thus, as in the embodiments described later, the guide grooves must be formed in the left and right positions on the upper surface corresponding to the rear end of the guide groove of the front main body section from the front end to the rear end.

    The sliding surface floats the plate-shaped body carrying the wheelchair on the top of the snow cover, sinks into the snow, prevents it from getting stuck, and reduces friction resistance when sliding on the snow cover. In order to fulfill the function, the front end side of the front body part must have a smooth finish surface with a sled edge, and as shown in the examples described later, both the front body part and the rear body part are formed in the left and right guide grooves. It is desirable that the corresponding back side is formed to bulge downward from the other back side so that the frictional resistance applied to the back side when towing on snow can be reduced. The rear end of the sliding surface of the front main body is stretched so that it slightly overlaps the lower side of the front end of the rear main body when the rear main body is deployed in a flat plate-like posture that can be used as a ridge. The front body while sliding Preferably it assumed that the snow from the gap between the rear body part sliding surface front and rear ends of the running surface is made possible prevent from being infiltrated.

    The guide groove serves to guide the wheelchair onto the sled tool and to prevent the mounted wheelchair from inadvertently moving or dropping off, thereby achieving a more stable boarding function. The wheelchair's large wheels (rear wheels) and casters (front wheels) must be formed in a groove shape that can be held from either the left or right outer side or both the left and right inner and outer sides. As shown, the rear range for guiding and mounting large wheels should be set wider than the front range for guiding and mounting only casters so as to prevent interference with the hand rim (grip for driving wheels). It is desirable to form a protruding car stop that can be climbed over at least the rear or front and rear of the wheelchair's large wheels and casters, or the recessed fitting groove that falls into these positions. Formed and to regulate the mounting position of the wheelchair, inadvertent displacement movement and dropping can be made even more forcefully preventable.

    The hinge mechanism can be folded and folded on the boundary between the vicinity of the rear end of the front main body and the vicinity of the front end of the rear main body, and can be expanded into a plate-like body. In addition to the hinge metal fittings shown in the examples described later, a rotating shaft penetrating in the left-right direction or an equivalent pivot shaft is provided at appropriate positions on the rear end of the front main body and the front end of the rear main body. Alternatively, it is also possible to connect by a soft band or other joint mechanism that can be connected with sufficient strength.

    The locking mechanism functions to connect the vicinity of the tip of the front main body part that is folded via the hinge mechanism and the vicinity of the rear end of the rear main body part so as to be openable and closable. In addition to taking into account the handling, there is no problem in resistance and operability when sliding on snow when the front body and rear body are flattened into a plate-like body. It should be limited to a certain shape and size, and should have a simple structure that can be easily locked and unlocked to the extent that it is ready to be folded and handled, and requires a special key or PIN. It is possible to provide a so-called lock, but it has a sufficient strength to prevent it from being inadvertently detached and unlocked, and it is a relatively simple lock / unlock mechanism that can be operated with fingers. It is desirable to have

    The handle bracket is a gripping part when the plate-like body is locked and transported in a folded state, and it is a binding part for a tow rope when it is unfolded flat and slides on the snow. Must be strong enough to withstand any load of lifting and towing and should be set to a shape and size that can be securely gripped with one or both hands. Either near the front end of the front body part or near the rear end of the rear body part, or in the position where it does not interfere with snow sliding and folding on both sides. It is preferable that it is provided at one place near the center to be balanced, or at two or more places that are balanced at an appropriate interval.

    The tightening belt mechanism is mounted on a flat plate that is flatly spread, and the wheelchair when moving is surely and easily handled so as to prevent the wheelchair from inadvertently shifting or dropping off during sliding. The wheelchair must be able to be fastened at an appropriate position in the wheelchair frame with sufficient strength, and as shown in the examples described later, the folding operation of the front and rear body parts is hindered. A storage chamber with an open / close lid is formed in the center of the upper surface of the rear body so that the tightening belt mechanism is stored in the storage chamber, and the open / close lid is opened when the plate-shaped body is deployed. It is desirable that the belt stored in the wheelchair is pulled out and connected to the wheelchair frame required place. In And a winding machine having a lock / unlock function coupled on the rear main body portion behind the annular tightness fitting, and at least near the left and right rear wheels of the mounted wheelchair. Two or four hanging brackets that can be engaged in two appropriate positions on the left and right and right and left and right and left and right wheels in the vicinity of the mounted wheelchair. The end side obtained by appropriately binding the tightening belts can be hidden from the front in the annular tightening bracket and connected to the rear winding machine in a wound state.

Even when the traveling wheels reach a part of the snow-sliding plate-like body that has partially melted snow or removed snow on the way, etc., and pass through an exposed road surface or ground surface, , The plate-like body should be removed one by one, and it will be able to run smoothly without damaging the sliding surface by forcible handling as it is, while on the other hand, when it is unnecessary for sliding on snow, the wheel and its suspension support part etc. It functions to prevent unnecessary frictional resistance from occurring and to prevent itself from being damaged, and is fixed or stored near the four corners where the entire sliding surface of the front and rear body is balanced. As shown in the examples described later, it is a fixed type or a storage type in the vicinity of the four corners that provide a balanced arrangement of the entire sliding surface of the front and rear main body parts. In the running posture That axle is arranged above the running surface and the periphery of the exposed wheel can be said to be desirable provided as such as those as formed by arranging the soft sealing portion for snow.
In the following, the structure of the present invention will be described in detail together with an embodiment representative of the present invention shown in the drawings.

    1 is a perspective view of a plate-like body to which the front and rear main body portions of FIG. 1 are connected via a hinge mechanism, a perspective view of a wheelchair sled tool of FIG. 2, a perspective view of a tightening belt mechanism housed in the storage chamber of FIG. 4 is a perspective view of a wheelchair sled tool folded for transportation, and a perspective view of a main part of a wheelchair frame to be bound by the tightening belt mechanism of FIG. The entire back surface with the front edge side of the edge of the warp as a smooth finish surface, and along the right and left side edges that are orthogonal to the front edge side that is the same as the front edge of the edge of the warp edge, The plate-like body 2 provided with the guide groove 31 (41) parallel to the wheelchair wheel so as to reach the middle of the front end side from the side is half cut at the center between the front end and the rear end. , Its front end belongs, and both guide grooves 31 and 31 stop in the middle of the surface. The front main body portion 3 corresponding to the formed side and the rear end side belong to the rear main body portion 4 corresponding to the side where the guide grooves 41 and 41 are crossed, and the hinge is interposed between the two. The mechanism 5 and 5 are connected so as to be foldable and can be restored to the original plate-like body 2, and the locking mechanism 7 is used for maintaining the folded state on the side opposite to the arrangement side of the hinge mechanisms 5 and 5. And a handle metal fitting 6 for gripping at the time of folding, which is also used for wearing a knot at the time of towing, is provided near the center of the left and right at the same place. Between the 31, 31, 41, 41, a tightening belt mechanism 8 that can temporarily fix an appropriate position of the mounted wheelchair W is provided so as to be retractable when not in use. An example is shown.

    The wheelchair sledging tool 1 is composed of a plate-like body 2 made of FRP (Fiber Reinforced Plastics), which is a combination of a front main body portion 3 and a rear main body portion 4 that are substantially GFRP (glass fiber reinforced resin) molded products. It is also possible to adopt CFRP (carbon fiber reinforced resin), KFRP (Keplar fiber reinforced resin), etc. in part or almost entirely as required. In some cases, aluminum alloy, magnesium alloy, titanium alloy It is also possible to use a light alloy such as, or a combination of some of these materials.

    The front main body 3 is set to have a left and right width of 700 mm, a front and rear length of 550 mm, and a thickness of about 100 mm, and has a substantially flat plate shape of a monocoque body structure in which the inside of the thick portion is hollow. In the range from the right place to the left and right rear edges, the depth is about 50 to 70 mm, and the cross-sectional shape in the front-rear direction is substantially U-shaped or substantially concave, and opens to the rear edge. The front left and right guide grooves 31 and 31 that can guide and mount casters (front wheels) W1 and W1 of the wheelchair W are formed substantially parallel to the left and right side wall surfaces. The wheelchair W caster W1 (front wheel) can be accommodated in the arrangement and width dimensions, and the left and right outer edges of the rear end opening are expanded in an open shape so that smooth guidance is possible. Is going from the back to the front Arrow guide display 36 to induce a wheelchair W has become a thing that has been expressed.

    The back surface side of the front main body 3 is formed on a relatively smooth sliding surface 32, the tip side is gradually curved to the top surface in the shape of a heel tip, and is formed on the back surface of the front left and right guide grooves 31, 31. The corresponding range is assumed to bulge downward, and between the left and right end bulging portions, projecting ridges 33, 33,... The left and right side wall surfaces of the front main body 3 and the heels connecting the left and right sides are covered by a snow shield 34 that is formed by extending and forming upward, and is about 20 mm from the rear edge of the sliding surface 32 for snow prevention. The edge 35 is continuously formed across the left and right widths.

    The rear main body 4 has a monocoque body structure set to have a lateral dimension of 700 mm, a front and rear length of 550 mm, and a thickness of about 100 mm, which is substantially the same as the front main body 3, and the left and right open to the rear end of the front main body 3. The rear guide grooves 41 and 41 parallel to the left and right outer wall surfaces from the front end to the rear end so as to be continuous with the guide grooves 31 and 31 are set to a similar depth of about 50 to 70 mm, and the arrangement and the left and right width dimensions are set. The wheelchair W to be mounted is formed in accordance with the large wheels (rear wheels) W2 and W2, and the space between the rear left and right guide grooves 41 and 41 corresponds to a position directly below the center of gravity of the mounted wheelchair W. Is provided with an opening / closing lid 43 having a temporary fixing function made of a magnet, a hook-and-loop fastener or the like in the upper surface opening, and a storage chamber 42 for storing a tightening belt mechanism 8 to be described later. To have.

The bottom surface of the rear main body 4 is finished to a relatively smooth sliding surface 44 as a whole, and a range corresponding to a position directly below the rear left and right guide grooves 41 and 41 is bulged downward. .. Are formed on the rear ends of the front vertical protrusions 33, 33,... Of the front main body 3. In addition, the front edge of the left and right side wall surfaces that are continuous therewith is provided with a recessed stepped portion 46 that meshes with the snow protection edge 35.
And the hinge mechanism 5 which consists of a hinge in each of two places where left-right balance between the left-right guide grooves 31, 31, 41, 41 of the upper surface which combined the rear end of the front main-body part 3 and the front end of the rear main-body part 4 is carried out. , 5 are connected so that the upper surfaces of the front main body portion 3 and the rear main body portion 4 can be folded so as to overlap each other.

    In the vicinity of the center between the left and right ends of the front main body 3 near the upper side of the wall thickness except for the snow shield 34, the plate-like body 2 is folded as shown in FIG. A plate-like body on which a wheelchair W is mounted, which is a portion directly above the center of gravity when the heel tip of the main body 3 and the rear end of the rear main body 4 are set in a vertical position with the end facing upward. In order to secure high straightness and the most reduced sliding resistance when pulling 2, the handle metal fitting 6 that also serves as a tighter is attached, and the handle metal 6 is slightly left or right. A locking mechanism 7 is provided over the snow shield 34 of the front main body 3 and the rear end of the rear main body 4 corresponding to the offset, which can be easily opened and closed by a finger operation. ing.

    As shown in FIGS. 3 and 5, the tightening belt mechanism 8 has an annular ring-like tight binding at a position on the bottom surface of the storage chamber 42 of the rear main body portion 4, and a position almost directly below the center of gravity of the mounted wheelchair W. A wheelchair in which a metal fitting 81 is firmly planted, and a winding machine 82 having a lock / unlock function that can be operated from above and outside is firmly fixed to the rear side of the annular tight metal fitting 81. Each of the base ends of a total of four hook-shaped hooks 83, 83,... That can be hooked to four appropriate locations on the W frame W3 is branched into a bifurcated, generally Y-shaped shape. The end sides of the pair of left and right tightening belts 84, 84 connected at the front end side are hidden from the front of the annular tight fitting 81 and connected to a winding machine 82 arranged at the rear in a winding shape. ing.

The example shown in the bottom view of the wheelchair sled tool of FIG. 6, the side view of the traveling wheel of FIG. 7, and the perspective view of the retractable wheel of FIG. Some specific examples of the wheelchair sled tool included in the present invention are provided with fixed or retractable traveling wheels 9, 9,... Near the four corners where the sliding surfaces 32, 44 are balanced. A specific embodiment is shown.
The wheelchair sled tool 1 shown in FIG. 6 and FIG. 7 has a horizontal axle 91 on the upper side of the sliding surface 32 (44) in the vicinity of a square in a balanced arrangement, and the vertical thickness of the plate-like body 2 The traveling wheels 9, 9,... That are axially attached are arranged, and the traveling wheels 9, 9,... Are partially exposed to protrude slightly from the respective openings of the sliding surface 32 (44). A soft seal part 92 made of soft synthetic rubber is attached around the ... to close the gap with the sliding surface 32 (44).

    A traveling wheel 9 shown in FIG. 8 has a downward projecting mechanism, and a longitudinal shaft 93 that suspends and supports a free wheel traveling wheel 9 passes through a vertical cylinder 96 with a flange. Further, it is biased upward by the built-in coil spring 97 wound concentrically, and the operation knob 95 provided at the upper end is opposed to the built-in coil spring 97 in the middle of the upper end side of the longitudinal movement shaft 93. By appropriately operating in the vertical direction and the circumferential direction, it can be moved up and down along the guide groove 98 formed in the inner peripheral surface of the vertical cylinder 96 and rotated around the vertical axis, and at a predetermined lowered position. Temporary fixing and a saddle type block 94 that can be lifted by releasing the temporary fixing are integrated.

    In the flange portion of the vertical cylinder 96, a plurality of mounting holes that penetrate vertically through the thick portion are perforated, and screws 99, 99,... As shown in FIG. 8, the traveling wheel 9 is accommodated in the wall thickness of the plate-like body 2 and penetrates the sliding surface 32 (44). It is arranged above the soft seal portion 92 made of synthetic rubber with a cross slit that is mounted so as to close the hole, and when the longitudinal movement shaft 93 is in the lowered position, it is below the axle of the traveling wheel 9 Is formed so as to protrude slightly from the sliding surface 32 by pushing open the cross slit of the soft seal portion 92.

(Operation of Example)
As shown in FIG. 4, the wheelchair sled tool 1 according to the embodiment having the configuration as described above can fold the front main body 3 and the rear main body 4 via hinge mechanisms 5 and 5. Yes, by locking the locking mechanism 7, it is possible to obtain a package shape of a size and shape that can be transported relatively easily by one person having a length of 550 mm, a width of 700 mm, and a thickness of about 200 mm. It is assumed that the plate-like body 2 made of a GFRP (glass fiber reinforced resin) molded product having a structure is set to enable light transportation.

    When the wheelchair sledging tool 1 is used when there is snow at a depth that cannot be moved by a wheelchair and a nursing care transportation vehicle cannot enter the entrance of the house, for example, a driver of the transportation vehicle (helper ) Grips the handle 6 of the wheelchair sled tool 1 in the folded state and transports it to the front door of the house, releases the locking mechanism 7 and rotates the hinge mechanisms 5 and 5. As shown in FIG. 2, the rear main body 4 is expanded so as to be a single plate-like body 2, and the wheelchair W on which the user is seated is placed on the rear end side of the rear main body 4. The left and right casters (front wheels) W1 and W1 are moved to the front part as shown in the perspective view of the wheelchair sled tool mounted with the wheelchair of FIG. The left and right large wheels (rear wheels) W2 and W2 are arranged on the left and right guide grooves 31 and 31, respectively, and the rear left and right guide grooves 4 are arranged. , 41, as shown in FIG. 3, the opening / closing lid 43 of the rear body portion 4 storage chamber 42 is opened, the fastening belts 84, 84 are taken out, and the respective hooking fittings 83, 83,..., As shown in FIG. 5, two right places on the frame W3 near the left and right casters (front wheels) W1, W1, and the right place on the frame W3 near the left and right large wheels (rear wheels) W2, W2. After firmly hooking up to two places in total, by winding up the winding machine 82, the tensioning belts 84, 84 are tensioned, and the respective mounting brackets 83, 83,. After pulling toward the annular tight fitting 81 located almost directly below the center of gravity of the wheelchair W, the winding machine 82 is locked and securely fixed.

    After the wheelchair W is securely fixed on the wheelchair sled tool 1, the amount of snow exceeds about 30 cm, and there is a soft and sinking snowy part, or there is a considerably hard uneven surface on the snow surface. When used in a place, as shown in the side view of the wheelchair sledding tool that slides on the snow in FIGS. 9 and 10, the tethers 62 provided at both ends of the tow strip 61 that is set to a predetermined length. , 62 is connected to the handle bracket 6 in front of the front body 3 and the tow belt 61 is hung on the shoulder of the helper (driver of the shuttle car) and pulled as shown by the white arrow in FIG. In other cases, the amount of snow is not so much, or even if there is a lot of snow, the surface of the snow that has been compacted has no irregularities, and the wheelchair should be used under normal conditions. Wheelchair from the back of the wheelchair like when assisting Body was moved directly so as to hand operated, so that the moving evacuated until transportation vehicle (not shown).

    The wheelchair sledging tool 1 which has started to slide on the snow has a smooth surface over the entire bottom surface, and the tip of the heel is curved in a hook shape, and a snow shield 34 is provided on the front and left and right peripheral walls. In addition, the bottom surface corresponding to the left and right guide grooves 31, 31, 41, 41 is formed in a bulging shape, and a plurality of vertical ridges 33, 33,... Since the contact area with the snow-covered surface is greatly reduced, the load on the tow carrier is reduced by sliding smoothly, and the sliding surface 32 of the front main body 3 is further reduced. As shown in a chain line circle in FIG. 10, the snow protection edge 35 extended to the rear end is meshed with a recessed stepped portion 46 engraved on the front edge of the rear body portion 4 sliding surface 44. Snow covered from the lower surface through the gap between the rear end of the front body 3 and the front end of the rear body 4 during sliding Made it shall be prevented from being infiltrated.

    Further, when fixed traveling wheels 9, 9,... Shown in FIGS. 6 and 7 are provided in the vicinity of the four corners where the plate-like body 2 sliding surface 32 (44) is balanced, from the sliding surface 32 (44). Each of the traveling wheels 9, 9,... With a slightly exposed rolling surface has a small amount of protrusion when sliding on the snow, so that resistance to towing movement can be kept low and The soft seals 92, 92,... Attached to the doors close the gaps between the running wheels 9, 9,... And the sliding surface 32 (44) opening edge to prevent snow from entering. In the case of passing on an asphalt road surface exposed by snow removal or melting snow before reaching the pick-up vehicle, each running surface slightly exposed from the sliding surface 32 (44) Even if the wheels 9, 9, ... are grounded and rolled, no special operation is required. It becomes to realize a road running.

Further, as shown in FIG. 8, when the retractable traveling wheels 9, 9,... Are provided, the traveling wheels 9, 9,. ... Is maintained in the plate-like body 2 so that the sliding surface 32 (44) of the wheelchair sled tool 1 has no unnecessary protrusion and can secure low friction, and has a cross slit. The seal portion 92 closes the opening of the sliding surface 32 (44) to prevent intrusion of snow. When the wheelchair sledging tool 1 approaches the exposed asphalt road surface, the plate-like body 2 is formed into a square. Each of the operation knobs 95, 95,... Exposed in the recessed portion is pushed down against the elastic force of the built-in coil spring 97 as shown by solid arrows in FIG. After lowering along 98, rotate in the circumferential direction When fixed, the lower side portions of the axles of the free wheel type traveling wheels 9, 9,... Move in the vertical direction as indicated by white arrows in FIG. , 92,... Are pushed and opened, and the rolling wheel surface is lowered and fixed to a slightly exposed position, so that each traveling wheel 9, 9,. It is possible to travel smoothly on the road surface.
When the operation knobs 95, 95,... Are operated again in the direction opposite to the solid line arrow in FIG. 8, the vertical block 94 is disengaged from the guide groove 98 when the operation knobs 95, 95,. The coil spring 97 can be automatically raised and stored by the restoring pressure of the coil spring 97.

    After arriving at the waiting pick-up vehicle, the winding machine 82 is unlocked, the fastening belts 84, 84 are sent out and loosened, and the respective hooks 83, 83,... Are attached to the wheelchair W frame W3. After removing from each part and housed in the storage chamber 42 together with the tightening belts 84, 84 and closing the opening / closing lid 43, the wheelchair W is retracted along the guide grooves 31, 31, 41, 41 to get on the pickup vehicle. After that, the wheelchair sled tool 1 in the state shown in FIG. 2 left on the ground is folded in half in the state shown in FIG. 4 with the hinge mechanisms 5 and 5 as a boundary, and locked by the locking mechanism 7. The wheelchair sledding tool 1 can be used in the same manner for moving on the road or moving on snow when returning home.

(Effect of Example)
In addition to the features described in the section of the effect of the present invention, the wheelchair sled tool 1 according to the embodiment having the above-described configuration includes major large parts of the front main body 3 and the rear main body 4 as GFRP ( Glass fiber reinforced resin) Reduced weight as a molded product and provided handle metal fitting 6 in the vicinity of the tip of the front main body portion 3 so that the front main body portion 3 near the tip of the front main body portion 3 is folded and folded via the hinge mechanisms 5 and 5. The rear end of the rear body 4 is closed by the locking mechanism 7 to reduce the size, and a single helper can grip the handle bracket 6 and carry it like a handbag to carry it relatively easily. Not only can it be transported efficiently even on paths that have not been snow-removed, but it also helps save space during storage and is advantageous for mounting in pick-up vehicles. It is obtained.

    Further, the plate-like body 2 made of a GFRP (glass fiber reinforced resin) molded product adopts a monocoque body structure in which the thick portion is hollow, and guide grooves 31, 31, 41, 41 of the sliding surfaces 32, 44. The range corresponding to is formed as a downward bulging shape, and the vertical ridges 33, 33,..., 45, 45,. Achieves excellent sliding stability and safety, and can effectively reduce the frictional resistance against the snow surface. For pulling, the handle bracket 6 is connected to both ends to form a loop. The effect that the belt 61 can be easily slid and moved only by towing a single helper can be exhibited.

    The tightening belt mechanism 8 is engaged by a total of four hooks 83, 83,... In the right and left and front and rear sides of the wheelchair W frame W3, and is connected to these hooks 83, 83,. The belts 84 and 84 are passed through an annular tight fitting 81 near the position of the center of gravity of the wheelchair W, wound by a winding machine 82 arranged at the rear, and tensioned. 2 and the winding machine 82 is arranged on the side opposite to the footrest of the wheelchair W, so that the tightening operation can be easily performed without any obstacles. The advantage of making it easy is obtained.

    As shown in FIG. 1 and FIG. 10, the snow body edge 35 is extended to the rear end of the front body portion 3 sliding surface 32, and the plate body 2 is deployed in a slidable state. In the case where it is combined so as to be engaged with the concave stepped portion 46 engraved on the front end edge of the part 4 sliding surface 44 so as to be engaged from the lower side, Snow enters from between the front end of the rear main body 4 and snow is clogged especially on the upper surface of the plate-like body 2 around the hinge mechanism 5 and the front and rear guide grooves 31, 31, 41, 41. It is possible to avoid the inconvenience that the folding work of the body 2 is hindered or the frictional resistance of the sliding surfaces 32, 44 increases due to solidification between the front and rear sliding surfaces 32, 44.

    Further, in the case where the traveling wheels 9, 9,... As shown in FIGS. 6 to 8 are provided at appropriate positions where the sliding surfaces 32, 44 are balanced, asphalt is exposed from the interval between snow accumulations by snow removal or snow melting. Even if you encounter a scene like this, the sliding surfaces 32 and 44 may be resisted by these asphalt surfaces, or the resistance surfaces of the corners may be damaged, causing the slip on the snow surface to deteriorate. Therefore, smooth running is always maintained and transportation efficiency can be improved, and the sliding surfaces 32 and 44 are protected to protect the plate-like plate 2 from unnecessary damage and to extend its life. It has an excellent effect of being able to do things.

(Conclusion)
As described above, the wheelchair sledging device according to the present invention can achieve the intended purpose uniformly by its novel configuration, and can be manufactured easily and inexpensively by eliminating any complicated structure. It can be provided, and it is not necessary to require strength on the side of the wheelchair mounted like an attachment for snow sliding using a conventional snowboard or ski for sports, etc. It is mounted as a normal wheelchair without attaching special parts for connection In addition to ensuring high running stability and safety, quick and efficient transportation is realized, and the folding mechanism at the front and rear center of the plate-like body improves handling such as carrying and storage. Since it can be easily installed on a nursing care vehicle, even a pick-up work by a single helper in a snowy area can greatly reduce the work burden compared to the conventional method, This is not only good news for the elderly and people with physical disabilities who are unable to use wheelchairs in Japan, but also because of lack of helpers and cost issues Its utility is highly appreciated by the nursing taxi industry, and it is expected that it will be widely used and disseminated widely.

The drawings show some typical embodiments embodying the technical idea of the wheelchair sled tool of the present invention.
It is a perspective view which shows the assembly structure of the tool for wheelchairs. It is a perspective view which shows the structure of the tool for wheelchairs. It is a perspective view which shows the tightening belt mechanism in a storage chamber. It is a perspective view which shows the folded tool for wheelchairs. It is a perspective view which shows roughly the frame part of the wheelchair which fastened the tightening belt mechanism. It is a bottom view which shows the sliding surface of the tool for wheelchairs which provided the wheel for driving | running | working. It is a side view which shows the wheel for driving | running | working provided in the sliding surface. It is a perspective view which shows a storage-type traveling wheel. It is a perspective view which shows the sled tool for wheelchairs carrying a wheelchair. It is a side view which shows the sled tool for wheelchairs towed and to slide.

1 Wheelchair tool 2 Plate-shaped body 3 Front body
31 Same front guide groove
32 Same running surface
33 Same vertical ridge
34 Same snow shield
35 Same edge for snow protection
36 Same arrow guide display 4 Rear body
41 Rear guide groove
42 Storage room
43 Same lid
44 Running surface
45 Vertical ridges
46 Recessed stepped part 5 Hinge mechanism 6 Handle bracket
61 Towed rope
62 Same connecting bracket 7 Locking mechanism 8 Tightening belt mechanism
81 Same ring-shaped fastener
82 Same winding machine
83 Same hanging bracket
84 Tightening belt 9 Wheel for traveling
91 Same axle
92 Soft seal part
93 Longitudinal shaft
94 Same bowl type block
95 Same operation knob
96 Same vertical cylinder
97 Same Built-in coil spring
98 Same guide groove
99 Screw W Wheelchair
W1 caster (front wheel)
W2 Same large wheel (rear wheel)
W3 Same frame

Claims (3)

It has a flat shape and strength sufficient to place a wheelchair, and the entire back surface with the front end side as a heel tip is a smooth finish surface, and the front side is orthogonal to the same front end side as the previous heel tip shape forming side. Hang a plate-like body with guide grooves parallel to each other along the left and right edges of the wheelchair so that they reach the middle of the front end from the rear end to the front end. The front main body part corresponding to the side where the front end side belongs, and the guide groove stops in the middle of the surface, and the rear end side belong to both sides, and both the guide grooves are crossed. When the front main body portion is developed into a flat plate-like posture that can be used as a ridge with respect to the rear main body portion, the sliding surface rear edge of the front main body portion is Extend the front body while sliding by extending it slightly below the front end of the sliding surface of the rear body. On snow from the gap between the rear body part sliding surface front and rear ends of the sliding surface is made possible prevented from being penetrated, freely restored to freely and the original plate member folded via a hinge mechanism between them In addition to being connected to the hinge mechanism, the locking mechanism for maintaining the folded state on the side opposite to the side where the hinge mechanism is arranged, and for gripping during folding that also serves as a tight-wearing device when pulling near the center of the left and right in the same place While providing a handle bracket, a tightening belt mechanism that can temporarily fix an appropriate position of the mounted wheelchair is provided between the left and right guide grooves on the front side of the front main body and / or the rear main body so that it can be stored when not in use. Further, in the vicinity of the four corners, which are in a balanced arrangement of the entire sliding surface of the front and rear main body parts, a stationary or retractable traveling wheel places the axle in the traveling posture above the sliding surface, and the exposed wheel Around Wheelchair sled member, characterized in that shall become provided so as arranging the soft sealing portion for snow. Both the front body part and the rear body part are formed so that the back side corresponding to the left and right guide grooves is more bulging than the other back side so that the frictional resistance applied to the back side when towing on snow can be reduced. The wheelchair sled tool according to claim 1 . The wheelchair sled tool according to any one of claims 1 and 2 , wherein the rear main body has a storage chamber with an open / close lid at the center of the upper surface thereof, and the tightening belt mechanism is stored in the storage chamber.

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