WO2011099194A1

WO2011099194A1 - Wheelchair transporting device

Info

Publication number: WO2011099194A1
Application number: PCT/JP2010/066412
Authority: WO
Inventors: 晴雄吉松
Original assignee: 株式会社ワイディーエス
Priority date: 2010-02-12
Filing date: 2010-09-22
Publication date: 2011-08-18
Also published as: WO2011099077A1; CN202113244U

Abstract

A wheelchair transporting device configured so that the vehicle body of the device has sufficient strength and safety and that the device enables a wheelchair to easily roll on and off the device. A wheelchair transporting device (X) is provided with a first vehicle body section (100) on which a wheelchair is placed, front wheels (1) which are connected to the first vehicle body section (100), rear wheels (2) which are disposed behind the first vehicle body section (100) in the front-rear direction of the vehicle body, a second vehicle body section (101) which is connected to the rear wheels (2), a connection section (102) which pivotably connects the first vehicle body section (100) and the second vehicle body section (101), and a changeover section (105) which switches between the lifting and lowering of the first vehicle body section (100).

Description

Wheelchair transport device

The present invention relates to a wheelchair transport device.

Patent Document 1 includes a mounting portion on which a cared person can get on and off while riding on a wheelchair, a riding portion having a flap pivotally attached to a rear end portion of the mounting portion via a hinge member, and this riding-in There is disclosed a wheelchair transport apparatus including front and rear wheels directly or indirectly connected to a portion and a link mechanism that swings the flap with respect to the ground with a shaft portion of the hinge member as a fulcrum.

Further, in Patent Document 2, the boarding portion of the wheelchair transport device includes a mounting surface and a flap that swings with respect to the ground with the shaft portion of the hinge member as a fulcrum on the mounting surface. It is disclosed that the bifurcated rear end portion of the operation lever is connected, while the front end portion of the operation lever is engaged with and disengaged from a locking plate provided on the mounting surface. And in patent document 2, if a cared person pulls an operation lever to a front-wheel direction, it will rotate in the direction which leaves | separates from the ground, using the axial part of a hinge member as a fulcrum.

In both Patent Document 1 and Patent Document 2, since the shaft portion (fulcrum) of the hinge member is located behind the shaft portion of the rear wheel, for example, when the flap is formed of a single plate material. However, there is a problem that the slope of the slope surface becomes larger with respect to the ground as the length of the flap is shortened.

Therefore, in Patent Document 1, in order to loosen the slope surface with respect to the ground, the first flap is connected to the mounting portion (floor plate portion) via the first hinge member, and further, the second hinge member is connected to the first flap. The 2nd flap is connected via. Thus, the longer the flap is, the more complicated the structure is, the more the flap weight is increased, and the higher the cost is.

Therefore, there is a demand for the appearance of a wheelchair transport device that allows a cared person to get on and off the boarding part “extremely easily” while riding on a wheelchair even with a single flap.

JP 2002-306535 A JP 2003-88556 A

An object of the present invention is to provide a wheelchair transport device that can ensure sufficient vehicle body strength and safety, and at the same time, can easily lift and lower a wheelchair.

The present invention is a wheelchair transport device that travels in a state where a wheelchair is placed, the first vehicle body portion on which the wheelchair is placed, the wheels disposed on the outer side in the vehicle longitudinal direction with respect to the first vehicle body portion, and the wheels. A second vehicle body portion to be connected, a connection portion that rotatably connects the first vehicle body portion and the second vehicle body portion, and a switching portion that switches an elevation state of the first vehicle body portion. .

According to the present invention, the first vehicle body portion can be moved to a lower position by a turning operation when the wheelchair is boarded. Moreover, since the whole 1st vehicle body part is moved, it can be raised / lowered in the state which ensured the vehicle body intensity | strength. Moreover, since a wheelchair can be raised / lowered in the state mounted on the 1st vehicle body part, weight balance is good and safety | security can be ensured. As described above, sufficient vehicle body strength and safety can be ensured, and at the same time, the wheelchair can be easily moved up and down.

Schematic explanatory drawing when the cared person himself gets on and off while getting on the wheelchair. Schematic explanatory diagram when the cared person travels while riding on a wheelchair (the cared person himself and the wheelchair are omitted). The exploded view for explaining an embodiment. The schematic explanatory drawing which shows the state which raised the operation lever in order to understand the inclination state of the boarding part. The schematic explanatory drawing which shows the state of the middle of an operation lever in order to understand the raising / lowering state of the boarding part 3. FIG. The schematic explanatory drawing which shows the state which lowered | hung the operating lever in order to understand the raising / lowering state of the boarding part 3. FIG. Schematic explanatory drawing of the link mechanism 7 (in a state where the operation lever is raised). Schematic explanatory drawing of the link mechanism 7 (state where the operation lever is lowered). The schematic explanatory drawing from the planar view of the principal part. Schematic explanatory drawing showing the characteristic part (position and movable range of the shaft part of the hinge member). Schematic explanatory drawing showing the characteristic part (slope surface of the boarding part). Schematic explanatory drawing (control lever) showing the characteristic part. The schematic explanatory drawing of the state which gets in the flap of the boarding part 3. FIG. Schematic explanatory drawing of the state which can drive | work. The figure which shows the mechanism for stopping the wheel of a wheelchair. The figure explaining arrangement | positioning of a battery. The figure which modeled the wheelchair conveyance apparatus which concerns on this embodiment. The figure which modeled the wheelchair conveyance apparatus which concerns on a comparative example. The figure which modeled the wheelchair conveyance apparatus which concerns on a modification. The figure which modeled the wheelchair conveyance apparatus which concerns on a modification. The figure which modeled the wheelchair conveyance apparatus which concerns on a modification.

(1) Environmental member The main environmental member of this embodiment is demonstrated easily with reference to FIG. 1 thru | or FIG. Detailed description of known matters is omitted. The wheelchair transport device X includes an electric motor (not shown) and can be driven by the driving force of the electric motor. Further, since the cared person himself / herself can get on and off the wheelchair conveying apparatus X while on the wheelchair, the cared person himself can freely travel to the destination while on the wheelchair Y (see FIG. 14). ). Therefore, the wheelchair transport device X includes components necessary for traveling on its own.

FIG. 1 is a schematic explanatory diagram when the cared person gets in and out of the wheelchair while riding. At this time, the operation lever constituting the link mechanism is lifted upward. On the other hand, FIG. 2 is a schematic explanatory diagram when the cared person travels while riding on a wheelchair. At this time, the operation lever contacts or approaches the rear end of the flap whose rear end is raised in an inclined state. FIG. 3 is an exploded perspective view for explaining the present embodiment.

The wheelchair transport device X of the present embodiment is similar to Patent Document 1, Patent Document 2, and the like. The front wheel 1, the rear wheel 2, the frame forming the riding-in part 3, the mounting plate fixed to the lower part of the frame, and the mounting plate It includes a swingably connected flap, a front wheel operation handle integrally provided on the front side of the frame, a light (not shown), and the like.

(2) Prerequisites of the present embodiment As shown in FIG. 1, the prerequisites of the present embodiment are that the cared person himself / herself can get on and off the wheelchair and the rear end of the mounting part. A riding part 3 having a flap 6 pivotally attached to the riding part 5, front and

rear wheels

1 and 2 connected directly or indirectly to the riding part 3, and the flap 6 connected to the hinge member 5. And a link mechanism 7 that swings relative to the ground with the shaft portion as a fulcrum. This embodiment has, as one of the characteristic parts, a link mechanism 7 provided on a frame that forms the riding-in portion 3 so as to be positioned between the axle 1a of the wheel 1 and the axle 2a of the rear wheel 2. . The link mechanism 7 will be described.

(3) Link mechanism The link mechanism 7 includes a first link mechanism 8 for swinging the flap 6 and a second link mechanism 15 for raising and lowering the riding section 3. For example, as shown in FIG. 1, the first link mechanism 8 is configured so that an operation lever 10 is pivotally supported on the upper portion of the mounting portion frame 9, and a portion 10 b near the tip is pivoted. The operation lever 11 includes a front end portion 10a of the operation lever and an operation link 11 connected to the central portion of the flap 6 or a portion 6b from the central portion.

On the other hand, the second link mechanism 15 is directly or indirectly connected to the operation lever 10 and the portion 10b near the distal end of the operation lever so as to be interlocked with the operation lever 10 (through a suspension member in this embodiment). The rear wheel frame 16 is connected to the rear wheel frame 16.

Then, as shown in FIG. 14, when the care receiver M himself pushes down the operation lever 10 toward the rear wheel 2 from above the head while riding on the wheelchair Y, the flap 6 is moved forward and backward of the operation link 11. At the same time as the rear end portion 6c moves away from the ground G so that the connecting

fulcrums

11a and 11b are displaced in the front-rear direction in an inclined state so that the upper surface of the flap 6 becomes an obtuse angle with respect to the upper surface of the mounting portion 4. The shaft portion 5a (fulcrum c) of the hinge member 5 further rises above the ground G (see FIGS. 4 to 6).

In the above configuration, when the care receiver M himself / herself rides on the wheelchair Y and rotates the operation lever 10 in the vertical direction, the shaft portion 5a (fulcrum c) of the hinge member 5 positioned in front of the axle 2a of the rear wheel 2 is supported. ) Moves up and down in a space S between a lower horizontal line L1 on the ground surface and an upper horizontal line L2 passing through the axle 2a of the rear wheel 2 and the axle 1a of the front wheel 1 (see FIG. 10).

Therefore, as shown in FIG. 11, the hinge member 5 that connects the mounting portion 4 and the flap 6 constituting the riding-in portion 3 does not have a stepped shape or a protruding shape. If it adds, the upper surface of the mounting part 4 and the upper surface of the flap 6 which comprise the riding-in part 3 will be located in a location lower than the front and

rear axles

1a and 2a, and will become a series of gentle slope surfaces. Therefore, the cared person can get on and off the wheelchair while being on the wheelchair.

A pair of the first link mechanism 8 for swinging the flap 6 and the second link mechanism 15 for raising and lowering the riding-in part 3 are disposed on the left and right sides of the riding-in part 4, and the first link mechanism 8 and the second link mechanism 15 are connected to each other. The operating lever 10 also serves as a portal shape. Therefore, since the left and right link mechanisms 7 are synchronized, it is possible to obtain advantages such as the riding-in portion 3 moving up and down in a stable state, the number of parts being reduced, and operability being good.

(4) Specific Configuration Although the first link mechanism 8 and the second link mechanism 5 are arranged in a pair on the left and right, only one will be described for convenience of explanation. Hereinafter, an embodiment shown in FIGS. 1 to 14 will be described. For example, referring to FIG. 3, reference numeral 1 denotes a front wheel having an axle 1a. In the present embodiment, the number of front wheels 1 is one, but they may be on the left and right like ordinary light vehicles. A frame 9 constituting the mounting portion 4 is attached to the front wheel 1. A handle 21 for steering the front wheel 1 is provided on the front frame 9 a of the frame 9. The frame 9 has a skeleton structure.

However, 9b is an L-shaped base frame (front view in FIG. 3), and the arcuate tip of the base frame 9b is fixed to the center of the front frame 9a. The end of the horizontal portion (including the portion close to the end) that travels to the arcuate tip of the base frame 9b is connected to the tip of the downward inclined frame 16a of the rear wheel frame 16 that constitutes the second link mechanism 15. Connected via (fulcrum b). A mounting plate 9c shown in FIG. 9 is fixed to the base frame 9b in a horizontal state.

9d is an upper frame having a tip fixed to a portion near the upper end of the front frame 9a, and this upper frame 9d faces the base frame 9b with a required space. The middle part of the upper frame 9d is bent at an obtuse angle, and the rear end part is connected to the rear end part of the base frame 9b via a connecting plate 9e. Further, a protruding support plate 22 is fixed to an appropriate portion of the inclined portion of the base frame 9b. Further, a plurality of reinforcing connecting rods 9f are fixed between the base frame 9b and the upper frame 9d.

On the other hand, 2 is a rear wheel having an axle 2a. As shown in FIG. 9, there are two rear wheels 2 in this embodiment. The rear wheel frame 16 constituting the second link mechanism 15 described above is lowered in a “V shape” toward the support plate 22 of the frame 9 on the front wheel side and the connection rear end of the base frame 9b with the axle 2a as the center. The inclined frame 16a and the upper inclined frame 16b are open. The opening angle of the frame is appropriately set according to the position of the rear end portion for connection between the support plate 22 and the base frame 9b. The rear wheel frame 16 also has one or a plurality of reinforcing connecting rods 16c.

Next, the boarding unit 3 will be described with reference to FIGS. 1 and 9, for example. Here, the “riding portion 3” includes a mounting portion 4 having a frame 9 attached to the front wheel 1, and a flap pivotally attached via a hinge member 5 to a connecting rear end portion of the base frame 9 b of the frame 9. 6 (see FIG. 4).

However, the flap 6 is located between the pair of left and right rear wheel frames 16, 16 as shown in FIG. In this embodiment, since the shaft portion 5a of the hinge member 5 is located in front of the axle 2a of the rear wheel 2, the connecting tip portion 6a is located near the connecting tip portion of the lower inclined frame 16a. The flap 6 has a pair of left and right mountain-shaped

side plates

26, 26 at both ends of the slope plate 25.

Next, the link mechanism 7 will be described. The link mechanism 7 includes a first link mechanism 8 for swinging the flap 6 and a second link mechanism 15 for raising and lowering the riding section 3. The first link mechanism 8 has an operation lever 10 in which a portion 10b near the tip is pivotally supported at a portion near the tip of the upper frame 9d of the mounting portion frame 9, and is linked to the operation lever 10. The operation lever 11 includes a distal end portion 10a of the operation lever and a central portion of the flap 6 or a long rod-like operation link 11 connected to a portion 6b from the central portion. The pivot point at the front end of the working link 11 is the front connecting fulcrum 11a, while the pivot point at the rear end of the working link 11 is the rear connecting fulcrum 11b.

Accordingly, the operating lever 10 includes a pair of left and right

first handrail rods

13 and 13 and a second handrail that is connected to the rear end portion of the first handrail rod in the orthogonal direction as shown in FIG. It consists of 杆 14. For example, as shown in FIG. 1, the first handrail rod 13 is formed in an arcuate shape, and has a projecting connection plate (bearing) 23 on the lower surface of the portion 10 b near the tip.

The operation lever 10 is pivotally mounted via a shaft hole 24 provided in the vicinity of the connecting plate 23, a horizontal axis, and a support plate 22 of the upper frame 6d, and can be rotated around a fulcrum a on the base end side. Further, the distal end portion of the operation link 11 is pivotally attached to the distal end portion 10 a of the operation lever 10. Further, the front end portion of the upper inclined frame 16b of the rear wheel frame 16 is pivoted directly or indirectly to the connecting plate (bearing) 23.

Since the operation lever 10 is formed in a circular shape, when the operation lever 10 is raised and lowered, either the first handrail rod 13 or the second handrail rod 14 may be used. Therefore, the operability is very good.

On the other hand, the second link mechanism 15 is directly or indirectly connected to the operation lever 10 also serving as the first link mechanism and the portion 10b near the tip of the operation lever so as to be linked to the operation lever 10. And a ring frame 16. In other words, for the purpose of preventing vibration and stable running, the upper inclined frame 16b of the rear wheel frame 16 pivots to the connecting plate 23 of the operating lever 10 via a connecting support rod 28 (suspension device) having a buffer spring 27. It is supported.

In the above configuration, as shown in FIGS. 4 to 6, when the care receiver M himself / herself rides on the wheelchair Y and pushes down the operation lever 10 from above the head toward the rear wheel 2, the flap 6 is The front and rear connecting

fulcrums

11a and 11b of the operating link 11 are displaced in the front-rear direction in an inclined state, and the upper surface of the slope plate 25 of the flap 6 becomes an obtuse angle state with respect to the upper surface of the mounting plate 9c of the mounting portion 4. Thus, at the same time as the rear end portion 6c moves away from the ground G, the shaft portion 5a of the hinge member 5 rises further than the ground G.

In addition, when the care receiver M himself / herself is on the wheelchair Y and rotates the operation lever 10 in the vertical direction, the shaft portion 5a (fulcrum c) of the hinge member 5 positioned forward of the axle 2a of the rear wheel 2 is It moves up and down in a space S between a lower horizontal line L1 on the ground surface and an upper horizontal line L2 passing through the axle 2a of the rear wheel 2 and the axle 1a of the front wheel 1 (see FIG. 10).

In this embodiment, it is a “tricycle”, but may be a “four-wheel vehicle”. Further, the rear wheel frame 16 is indirectly connected to the portion 10b near the tip of the operation lever 10 via the

suspension devices

27 and 28. However, the suspension device is provided for another purpose of the present embodiment. Therefore, this is not an essential matter of the present embodiment. In addition, even if the position of the suspension device is changed from the front side to the rear end side, for example, it is not an essential matter of the present embodiment.

Further, as long as the link mechanism 7 includes the first link mechanism 8 for swinging the flap and the second link mechanism 15 for raising and lowering the riding section, for example, even if the position of the connection fulcrum of the second link mechanism 15 is changed. This is an equivalent matter that can achieve the desired effect of the present embodiment.

In addition, the front and rear connection points of the operating link 11 of the first link mechanism 8 are displaced in the front and rear direction, or the front and rear connection points of the rear wheel frame 16 of the second link mechanism 15 are displaced in the front and rear direction. It is a matter that a person skilled in the art can arbitrarily change the design as to whether it is displaced in the vertical direction or in the vertical direction.

Further, a mechanism for fixing the mounted wheelchair Y may be provided in the wheelchair transport device X. The seat portion of a normal motorcycle or tricycle is fixed to the vehicle body, but in the wheelchair transport device X, the seat portion is the wheelchair Y. Therefore, in order to ensure the comfort and safety of the cared person M, it is important to fix the wheelchair Y when mounted. In the example shown in FIG. 15,

cylindrical members

50 and 51 for stopping the wheel W of the wheelchair Y are provided on the operation lever 10. The

cylindrical members

50 and 51 are supported by

shaft members

52 and 53 fixed to the operation lever 10. The circumferential surfaces of the

cylindrical members

50 and 51 are curved in a concave shape over the entire circumference. When the operation lever 10 is lowered, the curved surfaces of the

cylindrical members

50 and 51 come into contact with the wheels W, thereby preventing the wheels W from moving in the front-rear direction during operation. The

shaft members

52 and 53 support the

cylindrical members

50 and 51 in an eccentric state. Thereby, the

cylindrical members

50 and 51 can press the wheels W of any size. As shown in FIG. 15 (a), the

cylindrical members

50 and 51 are lowered when pressing the small wheels W, and as shown in FIG. 15 (b), the

cylindrical members

50 and 51 are raised when pressing the large wheels W. It is done. The

cylindrical members

50 and 51 may be configured to be slidable along the length direction of the

shaft members

52 and 53. Accordingly, the wheelchair Y having any size in the vehicle width direction (that is, the distance between the left wheel W and the right wheel W) can be handled.

The flap 6 is inclined upward when the wheelchair Y is mounted (see, for example, FIG. 14). Therefore, the flap 6 can function as a safety fence that prevents the wheelchair Y from falling while driving. In the wheelchair transport device X according to the embodiment, the strength of the flap 6 as a safety fence can be increased by fixing the rear end portion 6c of the flap 6 and the second handrail rod 14 of the operation lever 10. . Thereby, while the flap 6 makes boarding of the wheelchair Y easy when boarding, safety can be improved after mounting. Further, when the wheel W of the wheelchair Y is brought into contact with the inclined upper surface of the flap 6 at the time of mounting, and the wheel W is fixed by the

cylindrical members

50 and 51, the flap 6 also functions as a vehicle stop for the wheelchair Y during driving. .

As shown in FIG. 16, a battery 60 is disposed on the front end side of the vehicle body of the wheelchair transport device X. The wheelchair transport device X according to the present embodiment can also travel on a public road at a high speed, unlike an electric wheelchair that travels on a sidewalk at a low speed. Accordingly, the battery 60 is arranged on the front end side of the vehicle body so that the wind from the front that is generated along with the high-speed traveling functions as cooling air for cooling the battery 60. Furthermore, due to the structure of the wheelchair Y, a sufficient space for storing the wheelchair Y needs to be secured at the bottom and side of the vehicle body. When the battery 60 is disposed in the portion, the battery 60 obstructs the wheelchair Y from entering, or the vehicle body of the wheelchair transport device X is enlarged to ensure space. Therefore, the battery 60 is disposed on the front end side of the vehicle body, so that the wheelchair Y can be easily boarded and the vehicle body can be reduced in size. The battery 60 supplies electric power to an electric motor for traveling (for example, attached to the front wheel 1) and other electric motors and electric devices in the vehicle.

In the example shown in FIG. 16, the storage portion 61 is fixed to the frame at the front end portion of the vehicle body, and a pair of batteries 60 are stored in the storage portion 61. The accommodating part 61 is open | released in the side surface and the front surface. Thereby, the cooling efficiency by the cooling air CW from the front improves. In particular, even when a headlight or a cover is attached to the front end portion of the vehicle body, it is preferable that a part of the front surface 60a of the battery 60 is exposed to the outside. Thereby, the cooling air CW can directly cool the battery 60. Further, a plurality of grooves are formed on the peripheral surface of the battery 60. This increases the surface area of the battery 60 and further improves the cooling efficiency. Moreover, the storage part 61 is open | released in the upper surface. Thus, the battery 60 can be taken in and out from above the storage unit 61. By taking out the handle 62 of the battery 60 above the storage part 61, the battery 60 can be easily taken out. The battery 60 may be arranged inside or outside the frame 9, but when arranged inside as shown in FIG. 16, the battery 60 can be easily taken out from the wheelchair Y.

Next, the wheelchair transport device X is modeled, and the operation and effect of the wheelchair transport device X according to the present embodiment will be described. FIG. 17A is a diagram modeling the wheelchair transport device X when the wheelchair is mounted, and FIG. 17B is a diagram modeling the wheelchair transport device X when the wheelchair is loaded. As shown in FIG. 17A, the wheelchair transport device X includes a first vehicle body portion 100 on which the wheelchair is placed, a front wheel 1 connected to the first vehicle body portion 100, and a vehicle body longitudinal direction with respect to the first vehicle body portion 100. A rear wheel 2 disposed on the rear side, a second vehicle body portion 101 connected to the rear wheel 2, a connecting portion 102 that rotatably connects the first vehicle body portion 100 and the second vehicle body portion 101, And a switching unit 105 that switches the raising and lowering state of the first vehicle body unit 100. When the wheelchair is mounted, the mounting portion of the first vehicle body portion 100 is kept substantially horizontal. On the other hand, when the wheelchair is loaded, as shown in FIG. 17 (b), the switching unit 105 switches to the state where the first vehicle body part 100 is lowered, so that the first vehicle body part 100 centered on the connecting part 102 and the second body part The first vehicle body portion 100 falls backward and the second vehicle body portion 101 falls forward due to the rotation operation with the vehicle body portion 101. As a result, the entire first vehicle body 100 can be lowered to a low position. In this embodiment, the 1st vehicle body part 101 is falling so that it may incline to the rear-end side into which a wheelchair gets. With such a configuration, sufficient strength and safety of the vehicle body can be ensured, and at the same time, the wheelchair can be easily moved up and down. The shape and structure of the first body part 100 and the second body part 101 are not limited to those shown in FIGS. 1 to 14, and any shape or structure may be used as long as the operation and effect according to the present embodiment are exhibited. A structure may be adopted. In the embodiment shown in FIGS. 1 to 14, the mounting portion frame 9 corresponds to the first vehicle body portion 100, the rear wheel frame 16 corresponds to the second vehicle body portion 101, and the mounting portion frame with the fulcrum b as the rotation center. 9 and the rear wheel frame 16 are connected to each other so as to be rotatable, and the operation lever 10 and the link mechanism 7 (particularly, the second link mechanism 15) correspond to the switching unit 105.

The ease of ascending and descending in the wheelchair transport device X according to the present embodiment will be described in comparison with the configuration shown in FIG. The wheelchair conveying apparatus A shown in FIG. 18A has a configuration in which the flap A2 is lowered from the rear end of the vehicle body A1 connected to the front wheels and the rear wheels. In such a wheelchair transporting apparatus A, since the vehicle body A1 exists at a high position, it is necessary to increase the length of the flap A2 in order to form a gentle slope surface (A2 indicated by a solid line in the figure). . Therefore, in addition to the movement in the vehicle body A, the movement of the long slope surface is required, so that the movement distance becomes long and it is difficult to go up and down with the wheelchair. In addition, when the length of the flap A2 is shortened, the slope of the slope surface becomes steep (A2 indicated by a dotted line in the figure), and it is difficult to ascend and descend with a wheelchair. In the case of normal heavy load loading work, an increase in the moving distance for ascending and descending and the angle of the slope surface do not significantly affect the burden on the operator. However, for a cared person who operates a wheelchair, even a slight increase in the distance of movement and the angle of the slope surface greatly affects the burden of ascending and descending. In the wheelchair transport device X according to the present embodiment, as shown in FIG. 17B, the first vehicle body portion 100 on which the wheelchair is placed moves to a low position, so that a gentle slope surface is formed with a short moving distance. can do. As a result, the wheelchair can be easily moved up and down, and the burden of operating the wheelchair can be greatly reduced.

Moreover, in the wheelchair transport device X according to the present embodiment, it is possible to ensure the ease of ascending and descending of the wheelchair and at the same time ensuring safety. For example, in the wheelchair transport device X shown in FIG. 18A, a case where a configuration in which the flap A2 moves up and down in a horizontal state is employed in order to ensure ease of ascending and descending is considered. In this case, when the vehicle body A1 does not have a sufficient weight as compared with the wheelchair, the weight is concentrated on the side of the flap A2 when the wheelchair is moved up and down, and the weight balance is deteriorated. In particular, in a wheelchair transport device that can be driven by the cared person himself rather than a large vehicle accompanied by a caregiver, the vehicle body A1 is light, and safety during ascending and descending cannot be ensured. Unlike normal loading work of heavy objects, the ascending / descending of the wheelchair is performed in a state where the cared person is put on, so ensuring safety is extremely important. On the other hand, in the wheelchair transport device X according to the present embodiment, the first body portion 100 is moved up and down by a turning operation in a state where the wheelchair is mounted on the first body portion 100. That is, since the wheelchair is moved up and down in a state where the wheelchair is arranged at least between the front wheel 1 and the rear wheel 2 and the weight balance is good, high safety can be ensured.

The high vehicle body strength in the wheelchair transport device X according to the present embodiment will be described in comparison with the configuration shown in FIGS. 18 (b), (c), and (d). The wheelchair conveying apparatus B shown in FIG. 18B has a configuration in which the bottom plate B2 itself of the vehicle body B1 connected to the front wheels and the rear wheels is lowered. Such a wheelchair transport device B moves up and down the wheelchair by lowering only the bottom plate B2 without moving the vehicle body B1. Therefore, as shown in FIG. 18C when the vehicle body B1 is viewed from above, the reinforcing member B4 that connects the left and right frames B3 of the vehicle body B1 cannot be provided. If the reinforcing member B4 is provided, the reinforcing member B4 extending in the vehicle width direction prevents the bottom plate B2 of the wheelchair from going up and down as shown in FIG. If the left and right frames B3 are not connected to each other, sufficient vehicle body strength cannot be secured, or a special material or mechanism needs to be employed to secure vehicle body strength, resulting in an increase in cost. Since the weight of the wheelchair on which the cared person is placed is large and the wheelchair transport device can travel at a high speed, it is extremely important to secure the vehicle body strength. On the other hand, in the wheelchair transport device X according to the present embodiment, the first vehicle body 100 itself moves up and down. Therefore, as shown in FIG. 17C when the first vehicle body portion 100 is viewed from above, a reinforcing member 104 that connects the left and right frames 103 of the first vehicle body portion 100 can be provided. Even if the reinforcing member 104 extending in the vehicle width direction is provided, the frame 103 and the reinforcing member 104 also move simultaneously as the first vehicle body portion 100 itself moves up and down. Therefore, as shown in FIG. 17D, the wheelchair is not hindered from rising and falling by the reinforcing member 104. Thereby, sufficient vehicle body strength can be ensured without increasing costs.

FIG. 17 (e) is a diagram in which the wheelchair transport device X according to the present embodiment is modeled by adding a flap 106. In FIG. 17 (e), the second vehicle body 101 is omitted for the purpose of explaining the flap 106. As shown in FIG. 17 (e), the flap 106 is rotatably connected to the first vehicle body portion 100, and the rotation shaft 107 of the flap 106 is more in the first vehicle body portion than the axle 2 a of the rear wheel 2. It is arranged on the 100 side (that is, the front side). More preferably, the rotation shaft 107 is disposed in front of the entire rear wheel 2. Thereby, the space required for ascending / descending the wheelchair in the wheelchair transport device X can be reduced. The effect will be described in comparison with the configuration shown in FIG. As shown in FIG. 18 (e), the conventional wheelchair transport apparatus C includes a vehicle body C1 connected to the front wheel and the rear wheel, and a flap C2 connected to the vehicle body C1, and the rotation axis C3 of the flap C2 is At least the rear axle is disposed behind the axle of the rear wheel. Like the vehicle body A1, the vehicle body C1 is located at a high position, so that the length of the flap C2 is longer. Further, the rotation shaft C3 is disposed on the rear side of the rear wheel axle. Accordingly, the length L2 of the flap C2 that protrudes from the rear end position of the wheelchair transport device C (here, the rear end of the rear wheel) is increased. The length L3 that is essential for the ascending / descending of the wheelchair is the sum of the length L1 and the length L2 of the wheelchair transport device C itself, but the length L3 is increased due to the large length L2. . The wheelchair transport device here assumes that it can be easily parked not only in a special parking space for wheelchair users but also in a general parking space as with ordinary vehicles, motorcycles, bicycles, etc. . Therefore, it is extremely important to shorten the length L3 that is essential for parking. In the wheelchair transport device X according to the present embodiment, since the rotation shaft 107 of the flap 106 is disposed in front of the axle 2a of the rear wheel 2, the length L2 that the flap 106 protrudes can be reduced. Moreover, since the 1st vehicle body part 100 can be moved to a low position as mentioned above, the length of flap 106 itself can also be shortened and length L2 can be made still smaller. As a result, the length L3 that is essential for parking can be significantly shortened. Even if the rotation shaft 107 is disposed at the same position or rear side as the axle 2a, the first vehicle body 100 can be moved to a lower position, so that the length L3 is smaller than that of the conventional wheelchair transport apparatus C. Can be small enough. Furthermore, the wheelchair conveyance apparatus X should just have the structure shown to Fig.17 (a) at least, and the flap 106 may be abbreviate | omitted. For example, the first vehicle body 100 may be lowered to such an extent that the rear end portion of the bottom plate of the first vehicle body 100 directly contacts the ground. Alternatively, the bottom plate (and the frame that supports it) of the first vehicle body 100 may be extended rearward. However, it is preferable to provide the flap 106 because the safety during traveling is ensured by the flap 106.

Here, in the wheelchair transport device X, when the first vehicle body portion 100 is lowered, the second vehicle body portion 101 (the portion above the connecting portion 102) rotates forward, while the flap 106 (the rotation shaft 107). (The part on the tip side rather than) pivots backward. Further, when the first vehicle body portion 100 is raised, the second vehicle body portion 101 rotates backward, while the flap 106 rotates forward. As described above, when the first vehicle body 100 is moved up and down, the second vehicle body 101 and the flap 106 rotate in the opposite direction. On the other hand, in the wheelchair transport device X according to the embodiment shown in FIGS. 1 to 14, the operation lever 10 for switching the raising / lowering state of the mounting portion frame 9 (corresponding to the first vehicle body portion) is used to perform a single operation. Thus, the second vehicle body portion and the flap can be simultaneously rotated. Specifically, the operating lever 10 is connected to the frame 9 corresponding to the first vehicle body portion so as to be rotatable at a fulcrum a. In addition, the operation lever 10 is in a state in which the frame 9 is raised by turning one end side where the second handrail rod 14 is provided to the rear wheel frame 16 (corresponding to the second vehicle body portion) side. At this time, a portion of the operation lever 10 on one end side relative to the fulcrum a moves rearward, and a portion on the other end side (tip end 10a side) of the fulcrum a moves forward. On the other hand, the operation lever 10 is in a state in which the frame 9 is lowered by one end side turning to the opposite side of the rear wheel frame 16 and being pushed up. At this time, a portion of the operation lever 10 on one end side relative to the fulcrum a moves forward, and a portion on the other end side of the fulcrum a moves backward.

The rear wheel frame 16 is positioned above a fulcrum b of a connecting portion (corresponding to a connecting portion that rotatably connects the first vehicle body portion and the second vehicle body portion) between the mounting portion frame 9 and the rear wheel frame 16. The tip of the inclined frame 16b is connected to the operation lever 10 via a buffer spring 27. Further, the connecting plate 23 that is a connection portion with the rear wheel frame 16 in the operation lever 10 is disposed on one end side with respect to the fulcrum a. On the other hand, the flap 6 is connected to the operation lever 10 via the operation link 11 in a portion 6b on the distal end side with respect to the fulcrum c that is a rotation axis of the flap 6. Further, a tip portion 10 a corresponding to a portion on the other end side with respect to the fulcrum a is a connection portion with the flap 6 in the operation lever 10. With such a configuration, when the frame 9 is moved up and down, the rear wheel frame 16 and the flap 6 can be moved by one operation of the operation lever 10 even though the rear wheel frame 16 and the flap 6 are rotated in the opposite direction. 6 can be performed simultaneously, and the operability of the wheelchair transport device X is improved.

However, the rotation of the vehicle body and the rotation of the flap in the wheelchair transport device X are not limited to the link mechanism using the operation lever 10 as shown in the embodiment of FIGS. For example, a link mechanism for rotating the vehicle body and a link mechanism for rotating the flap may be made independent of each other. Moreover, you may perform the rotation operation | movement of a vehicle body part or a flap by using an electric motor instead of a link mechanism. For example, the first vehicle body portion and the second vehicle body portion (or flap) may be connected by a stroke motor to perform the rotation operation, or the rotation operation may be performed by winding a wire by the rotation motor. The rotation operation may be performed by providing a rotation motor directly on the part or the rotation shaft, or by providing a rotation motor via a gear. Further, a link mechanism may be used for one of the rotation operation of the vehicle body and the rotation operation of the flap, and an electric motor may be used for the other. When switching the raising / lowering state of the first vehicle body unit 100 using the electric motor, the electric motor and the surrounding connection mechanism correspond to the switching unit 105. When the switching unit 105 is performed using an electric motor, the switching unit 105 can be operated by a switch or a controller provided at any position of the wheelchair transport device X. The switching part 105 can also switch the raising / lowering state of the flap simultaneously with the switching of the raising / lowering state of the first vehicle body part 100. When the switching unit 105 is configured by an operation lever and a link mechanism, the first vehicle body unit 100 and the raising / lowering state of the flap are switched simultaneously by the configuration as shown in FIGS. When the switching unit 105 is configured using an electric motor, simultaneous switching can be performed by simultaneously transmitting a control signal to both the vehicle body lifting motor and the flap lifting motor by a single switch operation. Alternatively, the vehicle body elevating / lowering link mechanism and the flap elevating / lowering link mechanism are connected to one electric motor, so that simultaneous switching can be performed depending on the behavior of the electric motor once.

When the rear wheel 2 and the second vehicle body portion 101 are provided on both sides in the vehicle width direction, the first vehicle body portion 100 is located between one second vehicle body portion 101 and the other second vehicle body portion 101. It is preferable to move up and down by a synchronized rotation. As a result, it is possible to move up and down in a balanced manner on the left and right sides of the vehicle body, and the wheelchair can be raised and lowered safely. For example, when a link mechanism is used, the rotation operation can be synchronized by connecting the left and right link mechanisms. In the embodiment of FIGS. 1 to 14, the left and right pivoting operations are synchronized by a link mechanism using a gate-shaped operation lever 10. Moreover, when using an electric motor, rotation operation | movement can be synchronized by synchronizing the control signal output to an electric motor on either side.

In the above-described embodiment, since the wheelchair gets on and off from the rear side of the vehicle body, the second vehicle body portion with respect to the rear wheel 2 disposed on the rear side in the vehicle longitudinal direction with respect to the first vehicle body portion. Was provided. However, when the wheelchair gets on and off from the front of the vehicle body, the second vehicle body portion is provided only for the front wheel 1 arranged on the front side with respect to the first vehicle body portion so that the first vehicle body portion is inclined forward. It is good also as a structure to lower.

19 to FIG. 21, a modified example of the wheelchair transport apparatus X according to the present invention will be described. The wheelchair transport device X shown in FIG. 19A can further lower only the bottom plate 108 when the first vehicle body 100 is lowered. This makes it easier to get on and off the wheelchair. When such a configuration is adopted, the reinforcing member 104 cannot be provided near the center position of the first vehicle body portion 100 (see FIG. 17C), but the reinforcing member 104 is provided near the rear portion of the bottom plate 108. Since it can be provided, the vehicle strength can be ensured.

The wheelchair transport device X shown in FIG. 19 (b) has a connecting portion 102 at the top of the vehicle body. In such a configuration, the first vehicle body portion 100 is lowered as the second vehicle body portion 101 rotates rearward. In this case, it is preferable to connect the lower part of the first vehicle body unit 100 and the second vehicle body unit 101 by a switching unit 109 such as an electric motor or a link mechanism. In addition, the connection part 102 which connects the 1st vehicle body part 100 and the 2nd vehicle body part 101 so that rotation is possible is not restricted to the upper end part and lower end part of a vehicle body, You may arrange | position in any position of an up-down direction.

The wheelchair conveying apparatus X shown in FIG. 19C has a third vehicle body portion 110 on the opposite side of the second vehicle body portion 101 via the first vehicle body portion 100, that is, on the front end side. The third vehicle body part 110 is connected to the front wheel 1 and is rotatably connected to the first vehicle body part 100 via a connection part 111. In addition, a switching unit 115 that switches the raising / lowering state of the first vehicle body unit 110 is also provided. With such a structure, the first vehicle body part 100 can also be lowered on the front side, and as a result, the first vehicle body part 100 can be lowered to the extent that it is installed on the ground. The wheelchair conveyance device X shown in FIG. 19D is provided between the first vehicle body portion 100 and the second vehicle body portion 101, between the first vehicle body portion 100 and the third vehicle body portion 110, and within the second vehicle body portion 101. The frames and the frames in the third vehicle body part 110 are connected by a connecting part 120 that is rotatably connected. Thereby, the whole 1st vehicle body part 100 can fall.

A wheelchair transport device X shown in FIG. 20A includes a first vehicle body portion 200 on which a wheelchair is placed,

wheels

1 and 2 disposed on the outer side in the vehicle width direction with respect to the first vehicle body portion 200, and the front wheel 1 or A second vehicle body portion 201 connected to the rear wheel 2, a connection portion 202 that rotatably connects the first vehicle body portion 200 and the second vehicle body portion 201, and a switching portion that switches the raising and lowering state of the first vehicle body portion 200. 205. With such a configuration, when the second vehicle body portion 201 rotates toward the first vehicle body portion 200 with the connecting portion 202 as a fulcrum, the first vehicle body portion 200 moves to a lower position. As a result, it is possible to ensure sufficient vehicle body strength and safety, and at the same time, to easily ascend and descend the wheelchair. FIG.20 (b) has shown an example of the structure of the wheelchair conveying apparatus X shown to Fig.20 (a). In the example of FIG. 20B, the second vehicle body 201 on the rear wheel 2 side rotates about the axis L1, and the second vehicle body 201 of the front wheel 1 rotates about the axis L2. Note that the second vehicle body portion 201 may be provided on only one of the front wheel 1 side and the rear wheel 2 side.

In the wheelchair conveyance device X shown in FIG. 20C, the first vehicle body 200 and the left and right second vehicle body 101 and the frames in the second vehicle body 201 are rotatably connected. They are connected by a connecting part 210. As a result, the entire first vehicle body 200 can be lowered. Moreover, the 1st vehicle body part 200 can be raised / lowered without inclining the

wheels

1 and 2 in the vehicle width direction. Note that the second vehicle body portion 201 may be provided on only one of the front wheel 1 side and the rear wheel 2 side. The wheelchair transport device X shown in FIG. 20 (d) is a combination of the configuration shown in FIGS. 17 and 19 that rotates in the vehicle longitudinal direction and the configuration shown in FIG. 20 (a) or FIG. 20 (c). . That is, the first vehicle body portion 200 moves up and down by rotating in the vehicle longitudinal direction on the rear wheel 2 side and rotating in the vehicle width direction on the front wheel 1 side. Further, as shown in FIG. 20 (e), a turning operation in the vehicle width direction is performed on both the front wheel 1 side and the rear wheel 2 side, and at least one of the axis line L3 and the axis line L4, for example, is also applied in the vehicle longitudinal direction. A pivoting operation around the center may be performed.

In the wheelchair transport device X shown in FIG. 21, the first vehicle body part 300 and the second vehicle body part 301 are slidably connected. In the example of FIG. 21, the connecting portion that is slidably connected includes a slide portion 302 fixed to the first vehicle body portion 300 and a slide groove 303 formed in the second vehicle body portion 301. Moreover, the switching part 305 which switches the raising / lowering state of the 1st vehicle body part 300 is provided. However, the slide groove 303 may be formed in the first vehicle body portion 300 and the slide portion 302 may be fixed to the second vehicle body portion 301. With such a configuration, the first vehicle body 300 can be moved to a lower position by sliding. Therefore, it is possible to easily ascend and descend the wheelchair while ensuring sufficient vehicle strength and safety. Note that it may be slidable in both the vehicle front-rear direction and may be slidable on both sides in the vehicle width direction. Furthermore, it is good also as a structure which lowers a 1st vehicle body part by combining rotation operation | movement and a slide operation | movement. In addition, when the structure which can be rotated is employ | adopted, compared with the case where the structure which can be slid is employ | adopted, a vehicle body structure can be simplified and a number of parts can be reduced.

The present invention is used in the industry of manufacturing, selling, and renting wheelchair transport devices.

X ... Wheelchair conveyor, Y ... Wheelchair, M ... caregiver, G ... ground, L1 ... lower horizontal line, L2 ... upper horizontal line, S ... space, 1 ... front wheel, 2 ... rear wheel, 1a, 2a ... axle DESCRIPTION OF SYMBOLS 3 ... Riding part, 4 ... Mount part, 5 ... Hinge member, 5a ... Shaft part, 6 ... Flap, 6b ... Center part, 6c ... Rear end part, 7 ... Link mechanism, 8 ... First link mechanism, 9 ... Mounting part frame, 10 ... operating lever, 10a ... tip part, 10b ... part near the tip part, 11 ... actuating link, 11a, 11b ... front and rear connection fulcrum, 15 ... second link mechanism, 16 ... rear wheel frame. a, b, c ... fulcrum, 100, 200, 300 ... first body part, 101, 201, 301 ... second body part, 102, 120 ... connection part, 105, 109, 205, 305 ... switching part, 106 ... Flap, 107 ... rotating shaft, 302 ... slide part, 303 ... slide groove.

Claims

A wheelchair transport device that travels with a wheelchair mounted thereon,
A first vehicle body portion on which the wheelchair is placed;
Wheels disposed on the outer side in the longitudinal direction of the vehicle body with respect to the first vehicle body portion;
A second vehicle body connected to the wheel;
A connecting portion that rotatably connects the first body portion and the second body portion;
A switching part for switching the raising and lowering state of the first vehicle body part;
A wheelchair conveying apparatus comprising:
A flap connected to the first vehicle body via a rotation shaft so as to be rotatable;
2. The wheelchair transport device according to claim 1, wherein the rotation shaft of the flap is disposed closer to the first vehicle body portion than an axle of the wheel connected to the second vehicle body portion.
The wheelchair conveying apparatus according to claim 2, wherein the switching unit switches the raising / lowering state of the flap simultaneously with the switching of the raising / lowering state of the first vehicle body.
The switching unit includes an operation lever that is rotatably connected to the first vehicle body unit and that can perform a switching operation of the lifted state of the first vehicle body unit,
The operation lever is configured such that one end side is turned to the second vehicle body portion side to raise the first vehicle body portion, and the one end side is turned to the opposite side to lower the first vehicle body portion. And
The second vehicle body portion is connected to the operation lever at least at a position above the connecting portion,
The flap is connected to the operation lever on the tip side of the rotation axis of the flap,
The connection portion of the operation lever with the second vehicle body portion is disposed on the one end side with respect to the rotation shaft of the operation lever,
The wheelchair transport device according to claim 3, wherein a connection portion of the operation lever with the flap is disposed on the other end side with respect to a rotation shaft of the operation lever.
The first vehicle body has a bottom plate on which the wheelchair is placed,
In the up-and-down movement of the first vehicle body portion by the rotation operation with the second vehicle body portion, the upper surface of the bottom plate moves at a position lower than at least the axle of the wheel of the second vehicle body portion. The wheelchair transport device according to any one of claims 1 to 4.
The wheel and the second vehicle body connected to the wheel are provided on both sides in the vehicle width direction,
6. The first vehicle body portion moves up and down by a rotating operation synchronized between one of the second vehicle body portion and the other second vehicle body portion. The wheelchair transport device according to claim 1.
The wheelchair transport device according to any one of claims 1 to 6, further comprising a battery disposed on a front end side of the vehicle body.
The switching unit includes an operation lever that is rotatably connected to the first vehicle body unit and that can perform a switching operation of the lifted state of the first vehicle body unit,
The operating lever is provided with a cylindrical member that stops the wheel of the wheelchair placed on the first vehicle body part,
The wheelchair transport apparatus according to any one of claims 1 to 7, wherein the cylindrical member is supported by the operation lever in an eccentric state.
A wheelchair transport device that travels with a wheelchair mounted thereon,
A first vehicle body portion on which the wheelchair is placed;
Wheels arranged on the outer side in the vehicle width direction with respect to the first body part,
A second vehicle body connected to the wheel;
A connecting portion that rotatably connects the first body portion and the second body portion;
A wheelchair conveying apparatus comprising: a switching unit that switches an up and down state of the first vehicle body unit.
A wheelchair transport device that travels with a wheelchair mounted thereon,
A first vehicle body portion on which the wheelchair is placed;
Wheels arranged on the outer side in the vehicle longitudinal direction or the vehicle width direction with respect to the first vehicle body part,
A second vehicle body connected to the wheel;
A connecting portion that slidably connects the first vehicle body portion and the second vehicle body portion so that the first vehicle body portion moves in the vertical direction;
A wheelchair conveying apparatus comprising: a switching unit that switches an up and down state of the first vehicle body unit.