JP3068628U - Nursing wheelchair combined with unicycle - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a nursing wheelchair capable of reducing the labor of a caregiver accompanying a nursing wheelchair used in a hospital or a nursing facility and promptly responding to an emergency. [Constitution] In a structure in which a care wheelchair and a unicycle are connected by a fixed shaft, a detachable structure including a connection mechanism for connecting the care shaft and a unicycle using a folding or fixed connection shaft and connecting the connection shaft. A folding or fixed link mechanism, or a link mechanism that can respond to emergencies by adding a part for placing rescue equipment such as an oxygen cylinder or a drip device, is inserted into the rear frame of the wheelchair for nursing care, and the unicycle is connected. The wheelchair for nursing care, the caregiver can move appropriately while taking measures according to the condition of the care receiver with a bicycle-like feeling, and the labor of the caregiver is reduced. When not in use, the wheelchair can be folded and stored with the unicycle attached, or the wheelchair and the unicycle can be stored separately.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 In the present invention, instead of the caregiver pushing the nursing care wheelchair used by the caregiver at hospitals and nursing homes, the caregiver and the like use a unicycle driven by a foot pedal at the back of the nursing care wheelchair. This is related to the structure of a nursing wheelchair (hereinafter referred to as a wheelchair) operated by.

[0002]

[Prior art]

 Conventionally, many wheelchairs are often pushed by caregivers. In particular, for outdoor use, caregivers often push and use public roads. It has been proposed that a wheelchair be used by a caregiver with a wheelchair assisted drive operated by the caregiver. For example, simply pressing the handle of the auxiliary drive unit connected to the back of the wheelchair by the caregiver automatically controls the motor according to the speed at which the caregiver walks, regardless of the road condition, and drives the rubber tires. The apparatus is disclosed in Japanese Patent Application Laid-Open No. Hei 8-266574, and a two- or three-wheeled bicycle, a bicycle with auxiliary power, a scooter or a motorcycle is connected to a front portion of a wheelchair with a coupling having locking means and is towed. Some of them have been proposed in JP-A-9-56750, JP-A-2-83185 and the like.

[0003]

[Problems to be solved by the invention]

 However, conventionally proposed wheelchair assisting devices, which add an electric drive device to the rear of the wheelchair, require high costs for equipment and maintenance, and have no flexibility in retreating and rotating. In addition, bicycles with auxiliary power, or bicycles with scooters or motorcycles, have problems in strength and durability due to the structure of the wheelchair, and use on general roads is expected to be dangerous. In addition, there are many issues such as the risk of observing the care recipient on the wheelchair.

[0004] An object of the present invention is to reduce the labor of a caregiver or attendant pushing a wheelchair when taking a patient or an elderly person out of a wheelchair at a hospital or a nursing home, or going to a hospital. . In other words, by connecting a unicycle to the rear of the wheelchair used by the patient, it is possible to easily pass through narrow passages while watching the patient, make small turns such as easy forward and reverse, and Provide a wheelchair with the convenience of being able to separate a wheelchair and a unicycle, load it on the trunk of a car, go to a target location, and easily assemble and use it when going to a hospital or going out with a normal car It is to do. Furthermore, in hospitals and indoors, separate wheelchairs and unicycles are used as normal wheelchairs, and when not in use, separate wheelchairs and unicycles, or fold the wheelchair with the unicycle attached and park or store it even in narrow places. It is to provide a wheelchair that can do it.

Further, another object of the present invention is to provide a rescue facility such as an oxygen cylinder or a drip device and a coupling mechanism so that the rescue facility can be used to transport an injured person in a disaster. The detachable link mechanism can be inserted into the rear frame of the wheelchair to take care of the injured, etc. It is to provide a wheelchair that can be used at times.

[0006]

[Means for Solving the Problems]

 The present invention relates to a structure in which a nursing wheelchair and a unicycle are connected by a fixed shaft, and the nursing wheelchair and the unicycle are connected by using a folding or fixed connecting shaft and a detachable mechanism having a connecting mechanism for connecting the connecting shaft. Using a simple foldable or fixed link mechanism, or a detachable link mechanism with a coupling mechanism that attaches a rescue facility such as an oxygen cylinder or a drip device and connects the coupling shaft. The mechanism is inserted and connected to the rear frame of the wheelchair for nursing care, and if necessary, a brake mechanism used by a caregiver is added to the wheelchair for nursing care and / or the unicycle, and the unicycle is driven by a pedal. This is a wheelchair for nursing care with a unicycle.

Further, the present invention is a nursing wheelchair combined with a unicycle, wherein the drive of the unicycle is a mechanism for transmitting the rotation of a pedal pedal to wheels via a continuously variable transmission mechanism.

That is, the wheelchair used in the present invention is a wheelchair generally used in hospitals, nursing homes, and the like. On the other hand, a unicycle connected to the wheelchair may use a commercially available unicycle as it is. By changing some of the structure and specifications, such as adding a transmission mechanism, the motorcycle can be manufactured at low cost by using it while maintaining the necessary strength, durability, and convenience of a unicycle.

One of the features of the wheelchair in which the unicycle of the present invention is combined is in the coupling mechanism between the wheelchair and the unicycle, which can be easily attached to and detached from the unicycle without changing the basic specifications and characteristics of the wheelchair. The configuration ensures both operability and safety. That is, a detachable link mechanism having a coupling mechanism for coupling the coupling shaft with the unicycle is inserted into the rear frame of the wheelchair, and the unicycle is connected via a folding coupling shaft or a fixed coupling shaft coupled to the coupling mechanism. With the shaft of By connecting one or both of the connecting mechanism and the connecting part of the unicycle shaft part to the left and right movable state, this connecting shaft facilitates the change of the wheelchair from left to right and makes small turn. I can run. In addition, this link mechanism can be switched between a mechanism that can be folded while connected to a wheelchair and a fixed mechanism that is equipped with a rescue equipment mounting part, if necessary.

Another feature of the wheelchair combined with the unicycle of the present invention is the operability of the unicycle operated by the caregiver or attendant, and a mechanism for minimizing the fatigue of the unicycle operator. And In other words, it is preferable to provide a mechanism for transmitting the rotation of the pedal of the unicycle to the wheels via the transmission. A continuously variable transmission mechanism (planetary gear system, disk system, combined planetary gear and disk system) is a transmission that can be incorporated into a limited-sized axle of a unicycle, and switches the wheel rotation between forward rotation and reverse rotation. It is preferable because the speed can be easily adjusted between low speed and medium speed.

[0011]

[Action] A detachable link mechanism having a coupling mechanism for coupling the wheelchair and the unicycle with a fixed shaft is inserted into the rear frame of the wheelchair, and the foldable coupling shaft or the fixed coupling shaft coupled to the coupling mechanism. The wheelchair and the unicycle can be used as a bicycle by combining it with the shaft of a unicycle. By using a unicycle, the foot pedal can be rotated forward and backward easily. In addition, transmission to the wheels via the transmission mechanism to the unicycle reduces the fatigue of the operator of the unicycle and enables the vehicle to be used for forward and reverse travel. In addition, the wheelchair can be easily rotated by making the connecting part of the connecting shaft movable left and right. The wheelchair to which this unicycle is connected can be folded with the unicycle attached when not in use, or the unicycle fitted and fitted to the rear frame of the wheelchair can be separated and stored.

[0012]

[Embodiment of the invention]

 Next, the configuration of the wheelchair for nursing care combined with the unicycle of the present invention will be specifically described with reference to the drawings.

FIG. 1 shows a state in which a unicycle is connected to a rear part of the wheelchair of the present invention by a folding fixed shaft. A detachable link mechanism 6 having a coupling mechanism 5 is inserted into a rear frame 2 of the wheelchair 1. FIG. 4 is a schematic diagram in which the shaft portion 8 of the unicycle 4 is coupled via a folding coupling shaft 7 fitted and coupled to a coupling mechanism. The connecting shaft is a wheelchair in which at least one of the connecting mechanism and the shaft portion of the unicycle is connected in a state in which it can be moved left and right so that it is easy to change the left-right traveling direction of the wheelchair. 3 is a wheelchair handle, 9 is a pedal pedal, 10 is a drive shaft, 11 is a unicycle seat, and 12 is a brake.

FIG. 2 is a view showing a state in which a unicycle is connected to a rear portion of the wheelchair according to the present invention with a fixed fixed shaft. The connection between the wheelchair and the unicycle is connected using a fixed connecting shaft. Same as 1.

FIG. 3 is a schematic diagram showing a form of a connecting shaft connected to the connecting mechanism of the present invention. FIG. 3A shows a detachable link mechanism 6 provided with the connecting mechanism 5 and a wheelchair rear frame 2. , And one end of a folding type coupling shaft 7 processed into a shape having a predetermined function is coupled to the coupling mechanism, and is fixed by operating the fastening lever 13. It is connected to a shaft of a unicycle via one fastening portion 14 and an intermediate second fastening portion (folding fulcrum) 15. The holes 16 and 16 ′ of the second fastening portion are fixing pin insertion holes when folded or stretched, and the two fastening portions 14 and 15 are loosened in a movable state to fold the coupling shaft, or Stretch and insert the fixing pin into the specified hole to fix the distance between the wheelchair and the unicycle. FIG. 3B shows a state in which a detachable link mechanism 6 having a coupling mechanism 5 is inserted into the rear frame 2 of the wheelchair, and one end of a fixed coupling shaft 7 processed into a predetermined shape is coupled to the coupling mechanism. The fastening lever 13 is operated and fixed, and the other end of the connecting shaft is connected to the shaft of the unicycle.

FIG. 4 is a view showing a state in which the foldable link mechanism having the coupling mechanism of the present invention is inserted into the rear frame of the wheelchair, and FIG. 4 (1) includes the coupling mechanism 5 of the fixed shaft. FIG. 9 is a diagram showing a state in which the link mechanism 6 is inserted into the rear frame 2 of the wheelchair, the folding fulcrum 17 of the wheelchair and the link mechanism is opened in a use state, and the folding fulcrum of the link mechanism is fixed with the lock fitting 18. FIG. 4 (2) is a state diagram in which the lock of the link mechanism of FIG. 4 (1) is removed and the link mechanism is closed. FIG. 4C is a side view of a state in which the distal end of the fixed shaft is attached to the link mechanism 6 having the coupling mechanism 5 and is fixed by the fastening lever 13. It is a fastening part.

FIG. 5 is a view showing a state in which the fixed link mechanism to which the coupling mechanism and the rescue equipment mounting portion of the present invention are added is inserted into the rear frame of the wheelchair, and FIG. 5 (1) shows the coupling mechanism of the fixed shaft. 5 is a view showing a state in which a fixed link mechanism 6 having a columnar body installation location 19 and an oxygen cylinder installation location 20 on both sides of which a drip device or the like is mounted is inserted into the rear frame 2 of the wheelchair. FIG. 5B is a top view of a state where a fixed link mechanism is inserted into the wheelchair rear frame. 1 is a wheelchair, 4 is a unicycle, and 7 is a connecting shaft.

FIG. 6 is an explanatory view of a unicycle equipped with the continuously variable transmission mechanism (planetary gear system) of the present invention, and FIG. 6 (1) is a cross-sectional view of the unicycle equipped with the continuously variable transmission mechanism. Reference numeral 4 denotes a construction in which the foot pedal 9 fixes the rim 24 with the spoke 23 attached to the hub 22 of the transmission mechanism 21, the tire 25 is fitted, and the frame 26 is attached. Also, the configuration of the continuously variable transmission 21 is such that a planetary gear 32 is arranged on a sun gear 31 on the drive shaft 10, an internal gear box 33 that rotates while meshing with the planetary gear, and an outer periphery of the internal gear. The transmission has a configuration in which a bevel gear 34 is arranged, and the rotation is transmitted to the hub 22 to rotate the wheels. The operation of the manual change lever 27 is performed by operating the change lever 30 attached to the bracket 29 through the wire 28, In this configuration, the rotation of the pedal is transmitted to the wheels via a transmission mechanism. By mounting this continuously variable transmission mechanism on a unicycle, the direction of rotation of the wheels can be changed from forward to reverse, and the rotation speed can be changed by switching the change lever to [drive shaft → internal gear box → bevel gear → hub] to reduce the speed. When the vehicle travels and the transmission is transmitted as [Drive shaft → Internal gear box → Planetary gear → Bevel gear → Hub], the vehicle runs at medium speed, and the low speed point / speed can be switched continuously.

FIG. 6 (2) is a schematic cross-sectional side view illustrating the configuration of the continuously variable transmission mechanism. Three planetary gears 32 are arranged on a sun gear 31 on the drive shaft 10 and the planetary gears are arranged. The internal gear box 33 rotates in mesh with the internal gear, and a bevel gear 34 is arranged on the outer periphery of the internal gear, and the rotation is transmitted to the hub 22 to rotate the wheels.

FIG. 7 is a diagram illustrating a unicycle equipped with the continuously variable transmission mechanism (disk type) of the present invention, and FIG. 7A is a cross-sectional view of the unicycle equipped with the continuously variable transmission mechanism. The unicycle 4 is constructed by fixing the rim 24 with the spokes 23 attached to the hub 22 of the transmission mechanism 21 by the pedal pedal 9, lowering the tire 25, and attaching the frame 26. Is a transmission having a bevel gear A36 provided with a lining that rotates in contact with a disk 35 on the drive shaft 10, and a bevel gear B37 fixed to a hub that rotates in mesh with the bevel gear A. In this configuration, the operation of the manual change lever 27 is operated through the wire 28 to operate the change lever 30 attached to the bracket 29, and the rotation of the pedal is transmitted to the wheels via the speed change mechanism. This continuously variable transmission mechanism rotates the wheel in the reverse direction when the disc is placed in the "-" position by operating the change lever, the wheel turns neutral when it is placed in the "N" position, and the wheel rotates when it is placed in the "+" position. Can continuously adjust the rotation direction and the speed of the wheels that rotate forward.

FIG. 7 (2) is a schematic side cross-sectional view for explaining the configuration of the continuously variable transmission mechanism. The disk 35 on the drive shaft 10 rotates in contact with the lining surface of the lined bevel gear A. The wheel is rotated by disposing the bevel gear B meshing with the bevel gear A and fixed to the hub.

FIG. 8 is a diagram illustrating a unicycle equipped with the continuously variable transmission mechanism (the planetary gear / disk combination type) of the present invention, and FIG. 8 (1) is equipped with the continuously variable transmission mechanism. FIG. 2 is a cross-sectional view of the unicycle. The unicycle 4 is configured such that the pedal 9 is fixed to a rim 24 by a spoke 23 attached to a hub 22 of a transmission mechanism 21, a tire 25 is fitted, and a frame 26 is attached. The configuration of the step transmission mechanism 21 includes a planetary gear A38 on the sun gear 31 on the drive shaft 10, a planetary gear B39 that rotates by meshing with the planetary gear A, and an oscillating gear that rotates by meshing with the planetary gear B. 40, and a rotating disk 41 is arranged on the swinging gear shaft. The rotating disk 41 is sandwiched by a flange disk constituted by a fixed disk 42 and a pressing contact disk 43 pressed by a pressing spring 44, Times of rotating disk This is a transmission configured to transmit the rotation to the hub 22 to rotate the wheels. By operating the manual change lever 27, the triangular lever 45 is moved to change the position of the oscillating gear, and the rotating disk is put in and out of the flange disk. The transmission is transmitted to the wheels via a transmission mechanism that changes the transmission rotation speed.

FIG. 8 (2) is a schematic side cross-sectional view illustrating the configuration of the continuously variable transmission mechanism. The triangular lever 45 is operated by operating a manual change lever, and the swing gear 40 and the rotating disk 41 are fixed to the fixed disk 42. This is a structure that is inserted deeply between the flange disks constituted by the pressure contact disk 43 and transmits the medium-speed rotation to the wheels. FIG. 8 (3) is a schematic side sectional view for explaining the configuration of the continuously variable transmission mechanism. The triangular lever 45 is operated by operating a manual change lever to press the swing gear 40 and the rotating disk 41 into contact with the fixed disk 42. This is a configuration in which a low-speed rotation is transmitted to wheels by being inserted shallowly between flange disks constituted by the disks 43.

[0024]

[Effect of the invention]

 By connecting the unicycle to the rear of the wheelchair for nursing care of the present invention, the situation of the road surface can be taken while watching the caregiver in the wheelchair while responding to the caregiver's condition in a bicycle-like manner. It is possible to move at an appropriate speed by judging the car, and to remove the unicycle and move the care recipient as a wheelchair indoors such as in a facility. In addition, in the event of an emergency, the injured can be transported quickly and taken to a place or facility where treatment can be performed in a short period of time. The unicycle can be separated and loaded on the trunk of a car, etc., and easily assembled and used at the intended place, reducing the labor of attendants. When not in use, the wheelchair can be folded and stored with the unicycle attached, or the wheelchair and the unicycle can be stored separately, and in both cases, the storage space is small.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a state in which a unicycle is connected to a rear portion of a wheelchair according to the present invention by a folding fixed shaft.

FIG. 2 is a view illustrating a state in which a unicycle is connected to a rear portion of the wheelchair according to the present invention by a fixed shaft.

FIG. 3 is a schematic view showing a form of a coupling shaft coupled to the coupling mechanism of the present invention.

FIG. 4 is a view showing a state in which a foldable link mechanism having the coupling mechanism of the present invention is inserted into a wheelchair rear frame.

FIG. 5 is a view showing a state in which the fixed link mechanism to which the coupling mechanism and the rescue equipment mounting portion of the present invention are added is inserted into the rear frame of the wheelchair.

FIG. 6 is a diagram illustrating a unicycle equipped with the continuously variable transmission mechanism (planetary gear system) of the present invention.

FIG. 7 is a diagram illustrating a unicycle equipped with the continuously variable transmission mechanism (disk system) of the present invention.

FIG. 8 is a diagram illustrating a unicycle equipped with the continuously variable transmission mechanism (planetary gear / disk combination type) of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nursing wheelchair 2 Wheelchair rear frame 3 Wheelchair handle 4 Unicycle 5 Coupling mechanism 6 Link mechanism 7 Coupling shaft 8 Shaft section 9 Foot pedal 10 Drive shaft 11 Unicycle seat 12 Brake 13 Fastening lever 14 First fastening part 15 First 2 Tightening part 16 Fixing pin insertion hole 16 'Fixing pin insertion hole 17 Folding fulcrum of link mechanism 18 Lock fitting 19 Column installation place 20 Oxygen cylinder installation place 21 Transmission mechanism 22 Hub 23 Spoke 24 Rim 25 Tire 26 Frame 27 Manual change Lever 28 Wire 29 Bracket 30 Change lever 31 Sun gear 32 Planetary gear 33 Internal gear box 34 Bevel gear 35 Disk 36 Bevel gear A with lining 37 Bevel gear B fixed to hub 38 Planetary gear A 39 Planetary gear B 40 Rocking Dynamic gear 41 Rotating disk 2 fixed disk 43 pressed against the disc 44 presses the spring 45 triangular lever

Claims (2)

[Utility model registration claims] 1. A structure in which a nursing wheelchair and a unicycle are connected by a fixed shaft, wherein the nursing wheelchair and the unicycle are connected by using a folding or fixed connecting shaft and provided with a connecting mechanism for connecting the connecting shaft. A link mechanism using a foldable or fixed link mechanism, or a detachable link mechanism having a coupling mechanism for attaching a rescue facility such as an oxygen cylinder or an infusion device and coupling a coupling shaft, is used. Is inserted into and coupled to the rear frame of the wheelchair for nursing care, and if necessary, a brake mechanism used by the caregiver is added to the wheelchair for nursing care and / or the unicycle, so that the unicycle is driven by a pedal. Combined nursing wheelchair. 2. A mechanism in which the driving of the unicycle transmits the rotation of the pedal to the wheels via a continuously variable transmission mechanism.
A nursing wheelchair combined with the unicycle described in the above.