WO2004021953A1 - Civiere transformable en fauteuil roulant - Google Patents

Civiere transformable en fauteuil roulant Download PDF

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Publication number
WO2004021953A1
WO2004021953A1 PCT/JP2003/011494 JP0311494W WO2004021953A1 WO 2004021953 A1 WO2004021953 A1 WO 2004021953A1 JP 0311494 W JP0311494 W JP 0311494W WO 2004021953 A1 WO2004021953 A1 WO 2004021953A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
stretcher
lifting
pedal
release
Prior art date
Application number
PCT/JP2003/011494
Other languages
English (en)
Japanese (ja)
Inventor
Hidehiro Yamagishi
Tsunetaro Ito
Original Assignee
Takano Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takano Co., Ltd. filed Critical Takano Co., Ltd.
Priority to JP2004534197A priority Critical patent/JP4404771B2/ja
Priority to AU2003262019A priority patent/AU2003262019A1/en
Publication of WO2004021953A1 publication Critical patent/WO2004021953A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms

Definitions

  • the present invention relates to a stretcher that can be changed into a wheelchair. More specifically, the present invention relates to a stretcher provided with a mechanism for elevating and lowering a stretchable main body from a bed to a chair or vice versa.
  • Extending the X-link vertically by reducing the distance between the ends of the X-link increases the height of the stretcher body, and conversely increasing the distance between the ends of the X-link causes the X-link to extend horizontally. It stretches to lower the height of the stretcher body.
  • a stretcher that can be changed into a wheelchair in order to achieve a powerful object, comprising: a stretcher body that can be transformed into a chair by being folded; and a cart that supports the stretcher body.
  • a four-section parallel link mechanism that has four quadrilateral rotating fulcrums, two of which are fixed to the bogie, and that supports the stretcher body at the part that moves parallel to the bogie; and It has a telescopic mechanism that restricts the rotation of the parallel link mechanism and expands and contracts so as to rotate the four-bar parallel link mechanism.
  • the stretcher body supported by the parallel-moving part of the four-bar parallel link mechanism keeps the fixed posture, Ascend and descend while maintaining the angle. If the length of the extension mechanism is fixed, the height of the stretcher body is maintained at a constant level, so there is no need to provide a separate locking mechanism. In addition, there is no possibility that a hand or an object is pinched as in the case of the X-shaped link. Therefore, it is possible to safely and easily raise and lower the stretcher body. Furthermore, the range in which the stretcher body moves up and down is determined by the range in which the four-section parallel link mechanism rotates, so that the range in which the stretcher body moves up and down can be greater than the stroke of the yarn drawing-in mechanism itself.
  • the telescopic mechanism includes a base, a moving part movable with respect to the base, a screw moving mechanism provided between the base and the moving part, the mechanism moving by moving the moving part, and attached to the base. It is preferable to provide an actuating mechanism for rotating the screw moving mechanism.
  • the moving unit can be expanded and contracted with respect to the base by rotating the screw moving mechanism by a manually operated actuator mechanism by a motor or a handle. Since the rotation operation is converted to the expansion and contraction operation, the load during operation can be reduced.
  • the actuating mechanism further includes a handle portion for giving a rotation input
  • the screw moving mechanism has a screw rod attached to the base and arranged in a sliding direction, and a screw rod attached to the moving portion and screwed therein.
  • the actuating mechanism includes a first bevel gear for rotating a screw rod, and at least one second bevel gear that meshes with the first bevel gear, and the second bevel gear has a handle portion. It is preferable to be connected to the handle so as to rotate in conjunction with it.
  • rotating the handle rotates the second bevel gear, and in conjunction with this, rotates the first bevel gear, rotates the screw rod, and moves the slider along the screw rod.
  • the moving part can be expanded and contracted with respect to the base part.
  • the handle can be used to easily raise and lower the stretcher body, and since it does not require electricity, it is possible to avoid the danger of inoperability due to power failure in an emergency.
  • the second bevel gear and the handle are connected via a universal joint.
  • the rotation input can be given to the second bevel gear while following the expansion / contraction mechanism that rotates together with the four-bar parallel link mechanism by the expansion / contraction operation.
  • the expansion and contraction mechanism can be electrically extended and contracted by a switch operation on the motor.
  • the operator can move up and down the stretcher body only by the switch operation, which can reduce the operator's labor.
  • a catching means for generating an assisting force is further provided in a direction in which the extension mechanism is extended or a direction in which the stretcher body is lifted up with respect to the bogie. In this case, the force required for the telescopic operation of the telescopic mechanism can be further reduced.
  • the stretcher body has a frame that can be folded into a chair when folded, and a sabot member that is attached to the frame and supports a part of the patient's body. At least a portion of the support member or the support member itself where deformation of the support surface is required is divided into a plurality of parts, and these divided core members or support members are connected to each other by a flexible mechanism.
  • a fixed side member having a plurality of superposed plates arranged in parallel at intervals, a tilting side member having a plurality of superposed plates alternately overlapping the superposed plate of the fixed side member, and a fixed side member and a tilting side member.
  • the tilting-side member rotates about the connection shaft to tilt a part of the core member or the support member, and to perform both polymerizations. It is preferable to maintain the angle and maintain the shape of the support surface by utilizing the frictional force at the contact portion between the plates.
  • the patient using the stretcher is held in a stable sitting or supine position or a comfortable sitting or supine position by supporting a part of the body.
  • the support member prevents a part of the body from protruding from the bed or disturbing the supine position. . Therefore, from the viewpoint of the patient, there is no need to apply excessive force in order to maintain the posture, and even if the posture is changed or the child rolls over and suddenly approaches the edge of the bed, the patient falls down accidentally. You can have a sense of security and a sense of trust that they will not be lost.
  • the expansion and contraction mechanism includes a hydraulic cylinder that expands when pressure oil is supplied and contracts when pressure oil is discharged, and stores and supplies a certain amount of hydraulic oil to supply hydraulic oil to the hydraulic cylinder.
  • the so-called hydraulic jack be provided with a hydraulic supply / discharge unit for discharging.
  • the hydraulic cylinder when an oil supply operation is performed by the hydraulic supply / discharge unit, the hydraulic cylinder is extended by the hydraulic pressure, and the stretcher body is raised.
  • the hydraulic pressure is reduced, the hydraulic cylinder contracts, and the stretcher body descends.
  • the hydraulic cylinder has a cylinder part, a piston part slidably inserted into the cylinder part, and a cylinder chamber surrounded by the cylinder part and the piston part.
  • the hydraulic supply / discharge part is an oil tank.
  • An oil pump that sucks oil from the oil tank and sends the sucked oil to the cylinder chamber under pressure, an oil discharge path that connects the cylinder chamber and the oil tank, and a release device that opens and closes the oil discharge path.
  • a lifting pedal displaceably attached to the bogie; a lifting link for converting the displacement of the elevating pedal into an operation for an oil pump; a release pedal displaceably mounted on the bogie; Preferably, a release link for converting a displacement of the release pedal into an operation for the release device is provided.
  • the operation of the lifting pedal causes an operation via the lifting link.
  • the hydraulic cylinder is extended and the stretcher body rises.
  • the release device operates via the release link by operating the release pedal, and the hydraulic cylinder contracts and the stretcher body descends. The operator does not need to bend down to the lower part of the stretcher, and can extend and retract the expansion mechanism by stepping on the foot while standing.
  • the lifting pedal and the release pedal are provided on both left and right sides of the bogie. In this case, the operator does not need to go around the side where the pedal is located, and can quickly raise and lower the stretcher body.
  • the lifting pedal is rotatably mounted on the bogie.
  • the lifting link includes a first link for rotating integrally with the lifting pedal, a first link rotatably supported on the bogie and a first link for lifting. And a second link for raising and lowering, which contacts the oil pump and rotates in conjunction with the rotation of the first link for raising and lowering to apply a pressing force to the oil pump.
  • the number of links can be reduced, so that the component can be made compact. Since there is enough space for component storage, there is no need to reduce the thickness of the component, and the component strength can be increased sufficiently. Advantages such as lower costs and lower costs can be obtained.
  • the lifting pedal is rotatably attached to the bogie.
  • the lifting link includes a lifting first link that rotates integrally with the lifting pedal and a lifting second link rotatably connected to the lifting first link.
  • a link and a third link for lifting that are rotatably connected to the second link for lifting and supported rotatably with respect to the bogie, and the first link for lifting is used to rotate the first link for lifting.
  • the two links may be moved, and the third link for lifting may be rotated by the movement to apply a pressing force to the oil pump.
  • the second lifting link is interposed between the third lifting link that operates the oil pump and the first lifting link that rotates together with the lifting pedal.
  • the rotating shaft can be arranged at a position away from the oil pump, and even if the lift pedal is positioned horizontally instead of being bent, the lift pedal and the bogie will be linear. Can avoid contact. Therefore, the pedal portion of the lifting pedal can be arranged away from the bogie, and the amount of movement of the depressed pedal portion toward the rotation axis of the lifting pedal can be reduced, so that the foot of the operator operating the lifting pedal can be reduced. Can be prevented from being contacted.
  • the telescopic mechanism that expands and contracts by supplying and discharging pressure oil has a brake mechanism that increases the force required to displace the V-lease pedal as the displacement of the release pedal increases.
  • the operation amount for the release device can be reduced by depressing the lease pedal with a light force, and the operation amount for the release device can be increased by depressing the release pedal with a strong force. For example, when the release pedal is depressed with a light force, a relatively large load is applied to contract the expansion mechanism, such as when a person is on the stretcher body.
  • the telescopic mechanism can be contracted smoothly, and when the release pedal is depressed with a stronger force, the telescopic mechanism can be contracted smoothly even by the weight of the stretcher itself. Therefore, depending on the strength of depressing the release pedal, the stretcher body can be lowered at an appropriate speed according to the situation.
  • the above-mentioned brake mechanism has a disengagement relationship between the pressing member that is displaced integrally with the release pedal and the pressing member when the release pedal is displaced within a certain range. It is preferable to have an elastic member which engages with the pressing member by the displacement of the pedal and elastically deforms in accordance with the displacement of the pressing member. In this case, the operation amount of the release device can be reduced by depressing the release pedal with a small force until the pressing member comes into contact with the elastic member, and after the pressing member comes into contact with the elastic member, a stronger force is applied. Depressing the release pedal can increase the amount of operation on the release device.
  • the above-mentioned expansion and contraction mechanism further includes adjusting means for adjusting the positional relationship between the pressing member and the elastic member.
  • adjusting means for adjusting the positional relationship between the pressing member and the elastic member In this case, the range in which the release pedal can be depressed with a light force can be adjusted.
  • FIG. 1 is a cross-sectional view taken along the line I-I of FIG. 2, showing one embodiment of the stretcher of the present invention with the stretcher body omitted.
  • Fig. 2 is a plan view of Fig. 1.
  • FIG. 3 is a plan view showing a frame in a case where the stretcher body is in a bed state with a bogie omitted.
  • Fig. 4 is a side view showing the bed state of the stretcher.
  • Fi g. 5 is a side view when the stretcher is switched to the chair state.
  • Fig. 6 is a side view showing the state where the stretcher body in the chair state is inclined with respect to the bogie.
  • Fig. 7 is a central longitudinal sectional view showing an example of the expansion mechanism.
  • Fig. 1 is a cross-sectional view taken along the line I-I of FIG. 2, showing one embodiment of the stretcher of the present invention with the stretcher body omitted.
  • Fig. 2 is a plan view of Fig. 1.
  • FIG. 8 is a front view partially showing the screw shape of the telescopic mechanism.
  • Fig. 9 is a plan view of the bevel gear of the telescopic mechanism.
  • Fig. 10 is a side view of the bevel gear.
  • Fig. 11 is a bottom view of the bevel gear.
  • Fig. 12 is a cross-sectional view showing the structure of the anti-rotation mechanism that supports the headrest, taken along line XII-XII in Fig. 13.
  • Fig. 13 is a plan view of the rotation prevention mechanism.
  • Fig. 14 is a bottom view of the rotation prevention mechanism.
  • Fig. 15 is a plan view of the first force par of the rotation prevention mechanism.
  • Fig. 16 is a front view of the first cover of the rotation prevention mechanism.
  • FIG. 9 is a plan view of the bevel gear of the telescopic mechanism.
  • Fig. 10 is a side view of the bevel gear.
  • Fig. 11 is a bottom view of
  • FIG. 17 is a plan view of a second cover of the rotation preventing mechanism.
  • Fig. 18 is a front view of the second cover of the anti-rotation mechanism.
  • Fig. 19 is a plan view of the anti-rotation member of the anti-rotation mechanism.
  • Fig. 20 is a front view of the rotation preventing member of the rotation preventing mechanism.
  • Fig. 21 is a plan view of the wedge member of the rotation prevention mechanism.
  • Fig. 22 is a front view of the wedge member of the rotation prevention mechanism.
  • Fig. 23 is a side view showing the anti-rotation member applied to the headrest of the stretcher.
  • Fig. 24 is a side view showing the rotation prevention member with the headrest floating above the frame.
  • Fig. 25 is a side view showing the state where the headrest is most lifted off the frame.
  • Fig. 26 is a plan view schematically showing another embodiment of the rotation preventing mechanism.
  • Fig. 27 is a cross-sectional view of an anti-rotation mechanism in which a shaft is directly pressed by a wedge member.
  • Fig. 28 is a perspective view of the stretcher body showing the retractable armrest device.
  • Fig. 29 is a plan view showing the armrest of the retractable armrest device with a part cut away.
  • Fig. 30 is a side view showing the armrest of the retractable armrest device, partially cut away.
  • Fig. 31 is a plan view showing the armrest support of the retractable armrest device.
  • FIG. 32 is a side view showing the armrest support of the retractable armrest device.
  • Fig. 33 is a sectional view showing the state before the connecting means of the retractable armrest device is connected.
  • Fig. 34 is a sectional view showing the connection state of the connection means of the retractable armrest device.
  • Fig. 35 is a schematic diagram showing how the retractable armrest device is assembled.
  • Fig. 36 is a schematic diagram showing the movement of the retractable armrest device.
  • Fig. 37 is a diagram for explaining the movement of the lock mechanism provided in the telescopic means of the retractable armrest device.
  • Fig. 38 is a plan view showing an example of the structure of the support member attached to the above-mentioned stretcher, omitting the stretcher body and the bogie.
  • Fig. 38 is a plan view showing an example of the structure of the support member attached to the above-mentioned stretcher, omitting the stretcher body and the bogie.
  • FIG. 3 9 is a plan view of a core material of a headrest having a body support mechanism.
  • Fig. 40 is a front view of the core of the headrest shown in Fig. 39.
  • Fig. 41 is a bottom view of the core material of the headrest shown in Fig. 39.
  • Fig. 42 is a diagram showing the core material at the center of the headrest, Fig. 42A is a plan view, and Fig. 42B is a front view.
  • Fig. 43 shows the core material on the left side (right side) of the headrest.
  • FIG. 44 is a diagram showing the flexible mechanism as viewed from the plane and the right side, and the components constituting the flexible mechanism.
  • Fig. 45 is a plan view of the flexible mechanism.
  • Fig. 46 is a rear view of the flexible mechanism.
  • Fig. 47 is a bottom view of the flexible mechanism.
  • FIG. 48 shows the shape of a fixed polymerization plate.
  • Fig. 49 shows the shape of the movable polymerization plate.
  • Fig. 50 is a plan view showing the fixed side member to which the fixed overlap plate is fixed, and the tilting side member combined with the fixed side member.
  • Fig. 51 is a rear view of the fixed side member and the tilting side member shown in Fig. 50.
  • Fig. 52 is a bottom view of the fixed side member and the tilting side member shown in Fig. 50.
  • Fig. 53 shows a fixed superposed plate and a movable superposed plate provided on the base plate.
  • Fig. 54 is a front view showing an example of a telescopic mechanism including a hydraulic cylinder.
  • Fig. 50 is a plan view showing the fixed side member to which the fixed overlap plate is fixed, and the tilting side member combined with the fixed side member.
  • Fig. 51 is a rear view of the fixed side member and the tilting side member shown in Fig. 50.
  • Fig. 55 is a front view showing a state in which the above-mentioned extension mechanism is operated.
  • Fig. 56 is a cross-sectional view of Fig. 54 taken along the line VVI-V_VI.
  • Fig. 57 is a cross-sectional view along the line V_V II-VV II in Fig. 54.
  • Fig. 58 is a cross-sectional view along the line V-VIII- V-VIII in Fig. 56.
  • Fig. 59 is a sectional view taken along the line V-IX-V-IX in Fig. 56.
  • Fig. 60 is a side view for explaining the operation of the release link.
  • Fig. 61 is a side view for explaining the operation of the brake mechanism.
  • Fig. 62 is a side view showing a state in which a telescopic mechanism having a hydraulic cylinder is attached to a bogie.
  • Fig. 63 is a front view showing the appearance of the hydraulic jack.
  • Fig. 64 is a plan view of the hydraulic jack.
  • Fig. 65 is a cross-sectional view along the line VI-V-VI-V in Fig. 64.
  • FIG. 66 is a cross-sectional view taken along the line VI-VI-VI-VI in FIG.
  • Fig. 67 is a plan view showing another example of the configuration of the support member attached to the above-mentioned stretcher.
  • Fig. 68 is a schematic diagram showing a stretcher equipped with a telescopic mechanism operated by a motor.
  • Fig. 69 is a schematic front view showing another configuration example of the elevating link.
  • Fig. 70 is a schematic plan view of the lifting link shown in Fig. 69.
  • FIG. 1 to Fig. 53 show an embodiment of the stretcher of the present invention.
  • a stretcher 1 that can be changed in form to a wheelchair has a stretcher body 2 that can be transformed into a chair by folding, and a trolley 3 that supports the stretcher body 2, and forms a parallelogram.
  • a four-section parallel link mechanism 4 that has four rotating fulcrums, two of which are fixed to the trolley 3, and that supports the stretcher body 2 at a portion that moves parallel to the trolley 3, and a four-section parallel
  • the telescopic mechanism 5 is provided with a telescopic mechanism 5 that is arranged in a positional relationship to rotate the four-node parallel link mechanism 4 by expanding and contracting together. Note that the stretcher body 2 is not shown in FIGS. 1 and 2.
  • the bogie 3 has four wheels 31 at front, rear, left and right, and is configured to form a frame. More specifically, the bogie 3 in the present embodiment comprises two base members 32 attached front and rear to the wheels 31 and arranged in parallel on both sides of the stretcher 1, and these base members 32.
  • the base member 32 is disposed so as to be orthogonal to the base member 32.
  • the base member 32 has a front connection member 33 that connects the base member 32 at the front and a rear connection member 34 that connects the base member 32 at the rear.
  • the base member 32 and the front connection member 33, and the base member 32 and the rear connection member 34 are integrally fixed by, for example, welding or screwing, and constitute a frame-shaped carriage 3.
  • the front connecting member 33 is bent, for example, in the vicinity of both ends so as not to hinder the rotation of the four-bar parallel link mechanism 4, so that the central portion 33a is located closer to the ground surface than the base member 32. It is formed as follows.
  • the link support member 41 serves to fix the four-section parallel link mechanism 4 to the carriage 3.
  • two link support members 41 are attached to the rear connecting member 34.
  • the link supporting member 41 is provided with a hole through which the rear connecting member 34 penetrates. When the rear connecting member 34 is passed through the hole, the link supporting member 4 is screwed or the like. 1 is fixed to the rear connecting member 3 4.
  • the rear connecting member 34 has a non-circular cross section, for example, a substantially elliptical cross section so as to prohibit the rotation of the link support member 41, for example.
  • the four-bar parallel link mechanism 4 in the present embodiment includes a first link member 42 and a second link member 43 rotatably supported by a link support member 41, and a first link member 4.
  • the second and third link members 43 are configured to include a third link member 44 that is connected around the free end side of the link support member 41 with the link support member 41 by a pair.
  • the first support shaft 45 and the second support shaft 46 are arranged in parallel with the longitudinal direction of the rear connecting member 34, and are fixed to the ring support member 41 by, for example, screws.
  • a third support shaft 47 is arranged on the free end side of the first link member 42 with respect to the link support member 41 in parallel with the first support shaft 45.
  • a fourth support shaft 48 is arranged in parallel with the second support shaft 46.
  • the third link member 44 has a hole through which the third support shaft 47 and the fourth support shaft 48 can rotate.
  • the third support member 47 and the fourth support shaft 48 are provided. And are connected by the third link member 44 by penetrating the hole.
  • the first link member 42 has a first cylindrical body 421, which the first support shaft 45 passes through and is rotatably supported by the first support shaft 45, and a third support shaft 47, which passes therethrough.
  • a third cylindrical body 42 that is rotatably supported by the third support shaft 47, and a first cylindrical body 4 that is disposed orthogonal to the first support shaft 45 and the third support shaft 47. It has two parallel first connecting rods 432 connecting the first cylindrical body 421 and the third cylindrical body 422.
  • the first connecting rod 4 23 is formed, for example, in a pipe shape, and is fixed to the first cylindrical body 4 21 and the third cylindrical body 4 22 by welding or the like.
  • the second link member 43 also has the same configuration as the first link member 42, and the second cylinder through which the second support shaft 46 penetrates and is rotatably supported by the second support shaft 46.
  • Body 4 3 1, a fourth cylindrical body 4 3 2 through which the fourth support shaft 48 penetrates and rotatably supported by the fourth support shaft 48, a second support shaft 46 and a fourth support shaft 4 8 and two parallel second connecting rods 4 3 3 which are arranged orthogonally to each other and connect the second cylindrical body 4 3 1 and the fourth cylindrical body 4 3 2.
  • the second connecting rod 4 33 is formed, for example, in a pipe shape, and is fixed to the second cylindrical body 4 31 and the fourth cylindrical body 4 32 by welding or the like.
  • the first to fourth support shafts 45, 46, 47, and 48 serving as rotation fulcrums form a parallelogram, and include the link support member 41, the first link member 42, the second link member 43, and the fourth link member 43.
  • the four link parallel link mechanism 4 is configured by the three link members 4 4.
  • the telescopic mechanism 5 has a function of supporting the four-bar parallel link mechanism 4 that is about to rotate by the load acting on the stretcher body 2 and restricting the rotation of the four-bar parallel link mechanism 4.
  • the height of the stretcher body 2 with respect to the bogie 3 is adjusted by rotating the four-bar parallel link mechanism 4 by expanding and contracting.
  • the load acting on the stretcher body 2 corresponds to, for example, the weight of the stretcher body 2 and the four-bar parallel link mechanism 4 plus the weight of the person or object placed on the stretcher body 2.
  • the telescopic mechanism 5 can support the four-bar parallel link mechanism 4 that tries to rotate by the load acting on the stretcher main body 2 and regulate the rotation of the four-bar parallel link mechanism 4. It is arranged at a position where the four-bar parallel link mechanism 4 can be rotated by the expansion and contraction of the mechanism 5.
  • one end is rotatably attached to the third support shaft 47, and the other end is rotatably attached to the link support member 41.
  • the position where the extension mechanism 5 is attached is not limited to this example.
  • the link support member 41 in the present embodiment also has a role of supporting the extension mechanism 5. In this case, the effect of reducing the number of parts and the like is achieved as compared with a case where a member for supporting the expansion / contraction mechanism 5 is separately provided on the carriage 3.
  • the fifth support shaft 50 that rotatably supports the extension mechanism 5 is parallel to the first support shaft 45 and the second support shaft 46. It is attached with.
  • the fifth support shaft 50 is fixed to the link support member 41 by, for example, screwing.
  • the first support shaft 45, the second support shaft 46, and the fifth support shaft 50 are arranged such that the points serving as the centers of rotation are aligned on a straight line. Attached to.
  • the link support member 41 is attached to the base member 32 such that its longitudinal direction is inclined with respect to the longitudinal direction of the base member 32, and the fifth support shaft extends rearward and upward. 50 ⁇ second support shaft 46 ⁇ first support shaft 45.
  • the expansion / contraction mechanism 5 has a substantially V shape with respect to the link support member 41 and supports the four-bar parallel link mechanism 4.
  • the telescopic mechanism 5 is disposed between the first connecting rod 42 3 and the second connecting rod 43 3 and the third link member 44. '
  • the telescopic mechanism 5 includes a stretcher body 2 or a member that moves integrally with the stretcher body 2 while supporting the load acting on the stretcher body 2, for example, a connection point to the third support shaft 47 in the present embodiment, Truck 3 or united with truck 3
  • a connection point to the third support shaft 47 in the present embodiment Truck 3 or united with truck 3
  • an expansion mechanism 5 using a screw structure is employed.
  • a telescopic mechanism 5 according to the present embodiment includes a base 51, a moving part 52 movable with respect to the base 51, a base 51, and a moving part.
  • a screw moving mechanism 53 provided between 52 and rotating the moving section 52 by rotating, and an actuate mechanism 54 attached to the base 51 and rotating the screw moving mechanism 53 are provided. I have.
  • the structure of the extension mechanism 5 is not limited to this example. '
  • the screw moving mechanism 53 includes a screw rod 5 31 attached to the base 51 and arranged in the axial direction of the base 51, and a slider 5 attached to the moving part 52 and into which the screw rod 5 31 is screwed. It has 3 2.
  • the actuating mechanism 54 has a first bevel gear 541, which rotates the threaded rod 531, and at least one second bevel gear 54, which meshes with the first bevel gear 541 ,. are doing.
  • the base 51 is, for example, a large-diameter pipe
  • the moving section 52 is, for example, a small-diameter pipe.
  • the moving part 52 is inserted into the base 51 so as to be able to appear and disappear.
  • a sliding sleeve 55 that slidably supports the moving portion 52 is fitted into an end of the base portion 51 on the moving portion 52 side.
  • the sliding sleeve 55 of the present embodiment comes into contact with the slider 532 at the maximum extension position of the moving portion 52, and also has a function of defining the maximum extension position of the moving portion 52.
  • the end of the base 51, which is the counter electrode to the sliding sleeve 55, is closed by fitting a base member 56, and the base member 56 is provided with an actuating mechanism 54.
  • the slider 532 of the screw moving mechanism 53 is fitted into the end of the moving portion 52 on the base 51 side.
  • An eighth cylindrical body 57 through which the third support shaft 47 is rotatably penetrated is fixed to an end of the moving section 52 that is the counter electrode to the slider 5332, for example, by welding or the like.
  • two ninth cylindrical bodies 58 into which two fifth support shafts 50 arranged on both sides are rotatably fitted are fixed, for example, by welding or the like.
  • the actuating mechanism 54 includes a first bevel gear 541, which is rotatably mounted on the base member 56 in the axial direction of the base 51, and a first bevel gear 54, which is mounted on the base member 56. It has a second bevel gear 542 that is rotatably mounted to mesh with the first bevel gear 5. For example, one second bevel gear 5 4 2 is provided. The shaft angle, that is, the crossing angle, of the first bevel gear 5 41 is 90 degrees.
  • the first and second bevel gears 54 1 and 54 2 are bevel gears having the same tooth shape. However, the first bevel gear 541 has a larger diameter and a larger number of teeth than the second bevel gear 542.
  • the second bevel gear 542 rotates about 2 turns, preferably 1.3 turns. That is, for example, when the second bevel gear 542 rotates S1.3, the screw rod 531 makes one rotation.
  • the teeth of the first and second bevel gears 541 and 542 have a cone angle at the root 5101.
  • the tooth top is composed of a plane 500a parallel to the rotation axis and a plane 500b perpendicular to the rotation axis.
  • the valley portion that becomes the tooth bottom 501 is formed along the conical surface, but the tooth apex is a flat surface 5 00a whose appearance is orthogonal to the rotation axis with the cylindrical surface 500a like a crown gear. It has a triangular face formed by 0b.
  • the tooth portions of the first and second bevel gears 54 1 and 54 2 By forming the tooth portions of the first and second bevel gears 54 1 and 54 2 in this manner, it is possible to raise the crests with respect to the tooth bottom at the outer diameter portion, and to engage the mating surface. Can be widened in a triangular shape, so that a large torque can be transmitted.
  • the teeth are partially cut down on the inner diameter side near the surface 500b to make the teeth mesh smoothly, but in some cases, the teeth may not be cut down. That is, the first and second bevel gears 54 1 and 54 2 can be made small and capable of transmitting large torque.
  • a hexagonal hole 541a which is a hexagonal hole, is formed.
  • a mounting portion that fits into the hexagonal hole 54a is formed, and the mounting portion is inserted into the hexagonal hole 541a.
  • the upper end 531a of the screw rod 531 is formed, for example, in the shape of a shaft having a circular cross section, is supported by a thrust bearing 561, and engages with the thrust bear link 561.
  • a pin 562 is provided for preventing slippage.
  • the screw rod 531 and the first bell gear 541 are fixed by using a screw that penetrates the overlapped portion of the shaft portion 541b of the first bell gear 5411 and the like.
  • the bell gear 5 4 1 may be integrated.
  • the screw rod 531 is rotatably attached to the base end member 56, and rotates together with the first bevel gear 541.
  • the second bevel gear 542 is rotatably supported by a support member 563 fixed to the base end member 56 by screws or the like. Have been. A portion of the second bevel gear 542 exposed from the support member 563 is provided with, for example, a C-ring 564 for preventing it from coming off.
  • the screw teeth formed on the screw rod 531 are formed so that the cross-sectional shape becomes trapezoidal, as shown in Fig. 8, for example. By making the cross section of the teeth trapezoidal in this way, it becomes easier to transmit a large torque. Further, since the tooth has a trapezoidal cross-sectional shape, even if the axial force of the screw rod 531 acts on the slider 532, the screw rod 531 does not rotate. Therefore, the screw moving mechanism 53 is not reversed by the load acting on the stretcher body 2 and the telescopic mechanism 5 does not shrink naturally, and a complicated mechanism for maintaining the height is not required. On the other hand, inside the slider 532, a female screw portion 5333 that engages with the screw rod 531 is fixed by, for example, screwing. Therefore, when the screw rod 531 rotates, the slider 532 moves up and down along the screw rod 531, and moves the moving portion 52 in the axial direction of the base 51.
  • the second bevel gear 54 in the actuating mechanism 54 is connected to, for example, a handle portion 59, and by rotating the handle portion 59, the second bevel gear 54 rotates in conjunction with the handle portion 59.
  • the telescopic mechanism 5 in the present embodiment rotates together with the four-bar parallel link mechanism 4 by the telescopic operation. Therefore, in the present embodiment, in order to apply a rotation input to the second bevel gear 542 while following the rotating telescopic mechanism 5, the handle portion 59 and the actuate mechanism 54 use a universal joint. To connect.
  • the shaft portion 542 a of the second bevel gear 542 and one end of the connecting shaft 591 are connected by a first universal shaft joint 592, and the connecting shaft 591 The other end is connected to the hand hold part 59 by a second universal shaft joint 593.
  • the first universal shaft joint 592 and the second universal shaft joint 593 are, for example, well-known cross-shaped universal shaft joints.
  • the handle part 59 has a rotating shaft rotatably attached to the cover body 594, and the force-par body 594 is welded to the rear connecting member 34 so as to cover the connecting shaft 591. Fixed.
  • the assisting force is set in the direction in which the expansion and contraction mechanism 5 is extended or in the direction in which the stretcher body 2 is lifted with respect to the bogie 3.
  • the auxiliary means of the present embodiment which provides an auxiliary means for generating It is a spring to store.
  • auxiliary means is built in the base 51 of the extension mechanism 5. In this case, there is an advantage that the spring as the auxiliary means is not visible from the outside and the appearance is good, and an accident such as the hand being caught in the spring as the auxiliary means can be prevented.
  • a compression coil spring 510 as an auxiliary means is disposed between a flange 565 provided on the base member 56 and a flange 532a provided on the outer periphery of the slider 532.
  • the flanges 565 and 532a are set in consideration of, for example, the maximum extension position and the maximum contraction position of the moving section 52.
  • the position at which the auxiliary means is arranged may be any position where an auxiliary force can be generated in the direction in which the telescopic mechanism 5 is extended or the direction in which the stretcher body 2 is lifted with respect to the bogie 3. It is not done.
  • the stretcher body 2 is attached to a portion of the four-bar parallel link mechanism 4 that moves parallel to the bogie 3.
  • the stretcher body 2 is attached to the third support shaft 47 and the fourth support shaft 48.
  • the rotation of the four-bar parallel link mechanism 4 causes the stretcher body 2 to move parallel to the bogie 3. That is, the rotation operation of the handle portion 59 rotates the second bevel gear 542, thereby rotating the first bevel gear 541, and the screw rod 531.
  • the slider 532 moves along the screw rod 531, the moving section 52 moves in the axial direction, and the extension mechanism 5 expands or contracts. Due to the expansion and contraction of the expansion and contraction mechanism 5, the four-section parallel link mechanism 4 rotates, and the stretcher body 2 moves up and down in parallel with the bogie 3.
  • the lifting and lowering mechanism of the stretcher 1 even when a strong load is applied to the stretcher main body 2, for example, when a patient is placed on the stretcher 1, the height can be adjusted with a light handle operation force. it can. By using auxiliary means, the operating force is further reduced. Also, even if a force in the sliding direction acts on the slider 5 32, the screw rod 5 31 does not rotate, so that the load applied to the stretcher body 2 does not lower the stretcher body 2, No complicated mechanism for maintaining the height is required. Further, since the telescopic mechanism 5 of the present embodiment does not require electricity, there is no danger that the power cannot be turned off in an emergency and the operation becomes impossible.
  • a frame is formed by a frame 20 made of a round pipe that is foldably assembled.
  • the rotating mechanism is constituted by a pair of hinges or the like formed of round pipes having different diameters, and the mechanism to expand and contract is constituted by a sliding pair constituted by pipes having different diameters. be able to.
  • Fig. 3 shows the stretcher 1 that has been changed into a bed and is mainly shown by the frame 20 only.
  • the back part 21 includes two first vertical pipes 210 arranged in parallel, a first base plate 2 11 connecting these first vertical pipes 210, and a first vertical pipe 210. And a first horizontal pipe 2 12 rotatably supported by the first bending shaft 11.
  • the intermediate pipe 2 1 is located at a substantially intermediate position of the first vertical pipe 210 in a direction perpendicular to the first vertical pipe 210 and outward with respect to the first vertical pipe 210. 3 is fixed by, for example, welding.
  • a substantially U-shaped first pushing pipe 214 is fixed to the intermediate pipe 213, and an armrest 73 is rotatably attached to an end of the intermediate pipe 213.
  • the seat portion 22 includes two second vertical pipes 22 each having one end rotatably supported by the first bending shaft 11 and the other end rotatably supported by the second bending shaft 12. 0, a second horizontal pipe 2 21 connecting the second vertical pipes 220 on the first bending shaft 11 side, and a second horizontal pipe 22 1 connecting the second vertical pipes 220 on the second bending shaft 12 side.
  • the first support pipe 2 2 3 and the second support pipe 2 2 4 are connected to a fifth cylinder 2 25 rotatably mounted on the third support shaft 47. It is fixed so as to form a substantially V shape in side view.
  • the leg portion 23 includes two third vertical pipes 230 whose one end sides are rotatably supported by the second bending shaft 12, and a second base that connects the third vertical pipes 230. And a plate 2 3 1.
  • the frame 20 includes an interlocking mechanism 24 for interlocking the back portion 21 and the leg portion 23.
  • the interlocking mechanism 24 includes, for example, two first interlocking members 240 fixed to the first horizontal pipe 21 and two second interlocking members rotatably supported by the second bending shaft 12.
  • Tool 2 41 two interlocking links 2 4 2 that connect the first interlock 2 240 and the second interlock 2 41, and are arranged to engage with the second interlock 2 41
  • a fourth horizontal pipe 243 fixed to the third vertical pipe 230.
  • the first interlocking member 240 has a first interlocking shaft 244 having an axial direction parallel to the first bending shaft 11 fixed thereto, and the second interlocking member 241 has a second bending shaft A second interlocking shaft 245 having an axial direction parallel to 12 is fixed.
  • One end of the interlocking link 242 is rotatably supported by the first interlocking shaft 244, and the other end is rotatably supported by the second interlocking shaft 245.
  • the fourth horizontal pipe 2 43 is disposed so as to be orthogonal to the third vertical pipe 230 and on the ground surface side of the two third vertical pipes 230 near the second bending axis 12. It is fixed by welding or the like. Due to the weight of the leg portion 23, the fourth horizontal pipe 24 3 abuts on the second interlocking device 24 1.
  • the center of rotation of the first bending axis 11, the second bending axis 12, the first interlocking axis 2444, and the second interlocking axis 2445 is such that they form a parallelogram in side view. It is set.
  • the first vertical pipe 210 and the third vertical pipe 230 are set so that their longitudinal directions are parallel. Therefore, when the back part 21 rotates around the first bending axis 11, the first interlocking member 240 also rotates around the first bending axis 11 together with the back part 21.
  • the rotating motion is transmitted to the second interlocking device 2 41 via the interlocking link 2 42, and the second interlocking device 2 4 1 is pushed around the second bending axis 12 while pushing the fourth horizontal pipe 24 3. Rotate.
  • the strainer 1 of the present embodiment is provided with a deformation control mechanism 25 for restricting free rotation of the back part 21.
  • the deformation control mechanism 25 includes, for example, a third interlocking member 250 fixed to the first horizontal pipe 211 and a deformation connecting the third interlocking member 250 and the third horizontal pipe 222.
  • the control telescopic mechanism 2 51 is provided.
  • the third interlock 250 is fixed to the center of the first horizontal pipe 2 12.
  • the deformation control expansion / contraction mechanism 2 51 is a mechanism that can expand and contract between a preset maximum length and a minimum length, and can be fixed at an arbitrary length between the maximum length and the minimum length.
  • a deformation control expansion / contraction mechanism 251 a cylinder part 251a, a rod part 251b that is built in the cylinder part 251a so as to be extendable and contractible, and a cylinder part A coil spring (not shown) arranged around the rod portion 25 1 b inside the 25 1 a, and an unsealed state in which the coil spring is wound around the rod portion 25 1 b and loosened
  • a so-called mechanical lock which is configured to have an operating means (not shown) for switching to the unlocked state, is employed.
  • the deformation control expansion / contraction mechanism 25 1 may be any mechanism that can be expanded and contracted and can be opened and closed, and its structure is not limited to the example of the present embodiment.
  • a well-known gas spring with a lock mechanism may be employed as the deformation control expansion / contraction mechanism 25 1.
  • a gas spring with a lock mechanism is a cylinder device in which gas is sealed.It has a valve that opens and closes the passage for moving the sealed fluid and operating means such as a lever that opens and closes the valve. As a result, the retractable lock is released, and the movement of the sealed fluid is prohibited.
  • a third interlocking shaft 252 that is coaxial with the first interlocking shaft 24 is fixed to the third interlocking member 250, and the cylinder portion 25 1 a of the deformation control telescopic mechanism 25 1 Is rotatably supported by the third interlocking shaft 25.
  • a set of brackets 25 3 is fixed to the third horizontal pipe 222 by, for example, welding or the like, and a rod of the deformation control telescopic mechanism 25 1 is attached to a shaft fixed to the bracket 25 3.
  • the part 25 1 b is rotatably supported.
  • the triangular fixed link is formed by the second vertical pipe 220, the third interlocking device 250, and the deformation control telescopic mechanism 25 1.
  • the first horizontal pipe 2 1 2 integrated with the third interlocking tool 250 is locked from rotating about the first bending axis 11 1. Therefore, the back part 21 and the leg part 23 are positioned.
  • the rod part 25 1 b is made freely expandable and contractable by the operation of the operation means not shown, the lock of the first horizontal pipe 211 is released, and the back part 21 is rotated about the first bending axis 11. It becomes rotatable.
  • the stretcher main body 2 can be appropriately transformed into a chair state or a desired reclining position or a bed state.
  • the stretcher body 2 is set to be in a bed state when the deformation control expansion / contraction mechanism 2 51 has the shortest length.
  • a means for storing a return force to the original position by displacing for example, a spring, is used around the mouth 25 1 b or the cylinder. It may be provided inside the part 25 1 a or between the third interlocking shaft 25 2 and the shaft fixed to the bracket 25 3.
  • a shock absorber for generating resistance to the expansion and contraction operation of the deformation control expansion and contraction mechanism 251 for example, a well-known oil damper having a speed proportional damping may be provided.
  • the stretcher 1 of the present embodiment is provided with an angle adjusting mechanism 26 for adjusting the inclination of the stretcher body 2 with respect to the carriage 3.
  • the angle adjusting mechanism 26 generates resistance to the telescopic movement of the tilt telescopic mechanism 260 connecting the fourth support shaft 48 and the second bending shaft 12 and the tilt telescopic mechanism 260.
  • a shock absorber 26 1.
  • the tilt extension / contraction mechanism 260 is a mechanism capable of extending / contracting between a preset maximum length and a minimum length, and capable of being fixed at an arbitrary length between the maximum length and the minimum length.
  • a telescopic mechanism 260 for tilt for example, in the present embodiment, as in the telescopic mechanism for deformation control 251 described above, the telescopic mechanism can be extended and contracted to a cylinder part 260 a and a cylinder part 260 a.
  • a coil spring (not shown), which is arranged around the mouth portion 260 b inside the cylinder portion 260 a and the rod portion 260 b built into the cylinder portion, and a mouth portion 26 A so-called mechanical structure that includes operating means (not shown) that switches between a locked state in which the coil spring is wound and an unlocked state in which the coil spring is loosened. It uses what is called a lock.
  • the tilt extension / contraction mechanism 260 may be any mechanism that can be extended / contracted and lockable, and the structure and the like are not limited to the example of the present embodiment.
  • the well-known gas spring with a lock mechanism described above may be employed as the tilt expansion / contraction mechanism 260.
  • the rod portion 260 b of the tilt extension / contraction mechanism 260 is fixed to the sixth cylinder 262 supported rotatably by the second bending shaft 12 by screwing, welding, or the like.
  • the cylinder part 260 a of the tilting telescopic mechanism 260 is fixed to the seventh cylinder 263 rotatably supported by the fourth support shaft 48 by screwing or welding.
  • the shock absorber 261 for example, is an oil damper which is a well-known viscous damper having a speed proportional damping.
  • the oil dump 266 is arranged so that, for example, the direction of expansion and contraction is parallel to the expansion and contraction mechanism 260 for tilt.
  • a set of brackets 26 4 for attaching the oil damper 26 1 is fixed to the sixth cylindrical body 26 2, and the piston 2 of the oil damper 26 1 is located between the brackets 26 4.
  • the shaft that rotatably supports 6 1 b is fixed.
  • a fixing member 26 5 for attaching the oil damper 26 1 is fixed to the seventh cylinder 26 3 by, for example, welding, and the cylinder portion 26 1 a of the oil damper 26 1 is fixed to the fixing member 2. It is fixed to 65 by, for example, screwing.
  • the second support pipe 222, the third link member 44, and the tilting extension mechanism 260 form a triangular fixed link.
  • the seat part 2 2 is fixed to the carriage 3.
  • the second vertical pipe 220 is set to be horizontal, that is, the seat portion 22 is set to be horizontal when the telescopic mechanism for tilting 260 has the shortest length.
  • the rod portion 260b is made freely expandable and contractible by operating the operation means not shown, as shown in Fig. 6, the tilting expansion and contraction mechanism 260 is extended and the stretcher body 2 is moved to the carriage 3 Can be tilted.
  • the stretcher main body 2 can be fixed to the carriage 3 at a desired inclination.
  • resistance is generated when the tilt expansion / contraction mechanism 260 is expanded / contracted, so that the stretcher main body 2 is prevented from being sharply inclined with respect to the bogie 3. Thereby, danger such as patient fall can be prevented.
  • the strainer 1 in the present embodiment is a headrest 1 for supporting a patient's head.
  • the headrest 13 is attached to a first slide plate 130 configured to be slidable with respect to the first base plate 211. Thereby, the position of the headrest 13 can be adjusted.
  • the first slide plate 130 is slidably disposed using the two first vertical pipes 210 and the first base plate 211 as slide guides. In order to enhance the rigidity I 1 production, first slide Plate 1 3 0 side edge portion is bent, the ribs are formed.
  • the positioning of the first base plate 2 1 1 and the first slide plate 130 is performed, for example, by the first tightening screw 1 3 penetrating the superimposed first base plate 2 1 1 and the first slide plate 13 0. Do by one.
  • the first slide plate 130 has a first slot 132 in the sliding direction in which the first tightening screw 131 can slide, and is defined by the first slot 132. In the range, the first slide plate 130 can slide with respect to the first base plate 211.
  • the first tightening screw 13 1 is fixed integrally with the first operation knob 13 3 disposed on the back side of the first base plate 21 1, and is rotatably attached to the first base plate 21 1.
  • the first female screw portion 134 screwed with the first tightening screw 13 1 is prohibited from rotating, for example, by being sandwiched between ribs provided on both side ends of the first slide plate 130. Therefore, by tightening the first tightening screw 13 1 with the first operation knob 13 3, the first slide plate 130 is fixed to the first base plate 2 11 by frictional force.
  • a head bracket 135 to which the headrest 13 is attached is fixed by force welding or the like.
  • the head bracket 135 is fixed to the frame-shaped second pushing pipe 135 curved toward the rear side by force welding or the like.
  • the stretcher 1 in the present embodiment also includes a footrest 14 for supporting the foot of the patient.
  • the footrest 14 is attached to a second slide plate 140 configured to be slidable with respect to the second base plate 2331. This allows the position of the footrest 14 to be adjusted.
  • the structure of the second base plate 23 1 and the second slide plate 140 is, for example, the second tightening screw 14 1, the second long groove 14 2, the second operation knob 14 3, and the second female screw 1 4 4 and has the same structure as the first base plate 211 and the first slide plate 130 described above.
  • a foot support portion 144 is fixed by welding or the like.
  • the foot support portion 144 is formed so as to protrude in a direction orthogonal to the third vertical pipe 230 and in a direction toward the toe of the patient by about the thickness of the footrest 14.
  • the foot support shaft 146 is fixed to the protruding tip portion.
  • a foot frame 144 serving as a core material of the footrest 14 is rotatably attached to the foot support shaft 144.
  • the foot frame 147 is set so as to be able to rotate about 90 degrees between a position in contact with the third vertical pipe 230 and a position in contact with the foot support portion 144.
  • the footrest 14 is configured to be foldable.
  • the stretcher 1 of the present embodiment has a structure capable of adjusting the depth and angle of the headrest 13 as shown in FIGS. More specifically, the stretcher 1 of the present embodiment comprises a first head support shaft 62 a fixed to the head bracket 135 and a second head support shaft 132 provided on the headrest 133. With a head support shaft 6 2 b and a support arm 63 that is rotatably attached to the first head support shaft 62 a and rotatably supports the second head support shaft 62 b, The depth and angle of the headrest 13 can be changed. '
  • the stretcher 1 includes a rotation preventing member 66 having a pressed inclined portion 64 and a pressing portion 65, a wedge member 68 having a pressing inclined portion 67, and a load applied to the wedge member 68.
  • a rotation prevention mechanism 61 comprising a load applying means 69 for applying a force, and an angle of the support arm 63 around the first head support shaft 62a and a headrest 1 for the support arm 63.
  • the angle of 3 can be fixed all at once.
  • the headrest 13 is rotatably attached to the distal end of the support arm 63, which can rotate about the first head support shaft 62a, as shown in Figs. 23 to 25. Therefore, it can be moved forward and backward with respect to the frame 20 of the stretcher 1 in the wheelchair state, and can be moved up and down in the bed state, and the holding surface of the headrest 13 itself, that is, the patient's head.
  • the inclination of the holding surface can be adjusted.
  • the first head support shaft 62 a made of a pipe is fixed to the head bracket 135 by welding or the like, and the support arm 63 is attached to the first head support shaft 62 a. On the other hand, it is rotatable.
  • a pair of left and right brackets 614 are provided on the back surface opposite to the holding surface of the headrest 13.
  • the bracket 614 is bent at the headrest 13 side, and this bent portion is fixed to the back surface of the headrest 13 with two screws 615 at two places on the right and left sides.
  • a second head support shaft 6 2b made of a pipe or the like is integrated with the left and right brackets 6 14 by welding or the like.
  • the support arm 63 is a member having a base end rotatably mounted on the first head support shaft 62 a and rotatably supporting the headrest 13 at the distal end side. To prevent the relative rotational movement of both shafts 62a and 62b and fix the headrest 13 at the desired position and angle, or to allow the union rotational movement of both shafts 62a and 62b. The position of the headrest 13 and the angle of the holding surface can be changed.
  • the support arm 63 has a first force par 6 16 and a second cover 6 17 which are almost half-split, and includes a rotation preventing member 66, a wedge member 68 and a load applying means 69.
  • the pair of covers 6 16 and 6 17 have semicircular recesses, and are combined with the other cover to axially support the shafts 62 a and 62 b so as to be rotatable, respectively.
  • Form 6 3 b In the present embodiment, a port 69 a and a nut 69 b are used as the load applying means 69, and the pressing inclined portion 67 of the wedge member 68 is used by utilizing these tightening forces.
  • the pressed inclined portion 64 is pressed.
  • the anti-rotation member 66 presses the shafts 62a and 62b and tightens them between the bearing surfaces of the shaft holes 63a and 63b to prevent rotational movement of these shafts 62a and 62b.
  • the pressed inclined portion 64 receiving the pressing force and the pressing portion 65 pressed against the peripheral surface of the shafts 62a and 62b are formed.
  • the rotation preventing member 66 on the first head support shaft 62 a side is illustrated.
  • the anti-rotation member 66 has a pair of symmetric members arranged symmetrically with respect to the two shafts 62a and 62b.
  • the pressed inclined portion 64 of the anti-rotation member 66 is provided so as to contact the wedge member 68 as shown in FIG. 12, and receives the pressing force from the wedge member 68 to cause the anti-rotation member 66 to move. It is a slope that is moved to the side of the first head support shaft 62a or the second head support shaft 62b.
  • the pressed inclined portion 64 is a plane whose inclination angle is equal to the inclination angle of the pressing inclined portion 67, and is brought into surface contact with the pressing inclined portion 67.
  • the first head The holding part 65 that contacts the outer peripheral surface of the head support shaft 62a and the second head support shaft 62b rotates the first head support shaft 62a and the second head support shaft 62b.
  • a shape that can generate an appropriate frictional force to tighten to the extent that it is impossible for example, the outer peripheral shape of the first head support shaft 62 a and the second head support shaft 62 b as in the present embodiment. It is preferable to use a shape having a substantially semicircular concave curved surface and a large contact area with each of the shafts 62a and 62b.
  • the wedge member 68 has a pressing inclined portion 67 for pressing the pressed inclined portion 64 of the rotation preventing member 66 while sliding, and a wedge effect generated between the pressing inclined portion 67 and the pressed inclined portion 64 is provided.
  • the anti-rotation member 66 is a member that presses the shafts 62a and 62b.
  • the wedge member 68 of the present embodiment is rectangular in a plan view, and has a pair of pressing inclined portions 6 7 having a symmetric shape on the surfaces of the shafts 62 a and 62 b. It is a substantially trapezoidal member with a front view.
  • the pressing inclined portion 67 has a flat surface as shown in the figure, and is formed so as to make surface contact with the pressed inclined portion 64.
  • a through hole 68a through which the thread of the port 69a passes.
  • a part of the through hole 68a for example, about the upper half, is a substantially rectangular recess 611 larger than the through hole 68a so that the bolt 69a and the nut 69b do not idle.
  • the head or nut 69b of the bolt 69a is accommodated in a non-rotatable state. In this embodiment, as shown in Fig. 12, the nut 69b is dropped into the recess 611.
  • the bolt 69 a and the nut 69 b functioning as the load applying means 69 apply a load so as to press the wedge member 68 against the pressed inclined portion 64 of the rotation preventing member 66.
  • the head of the bolt 69a has a butterfly shape as shown in Fig. 12 so that it can be manually tightened or loosened.
  • a resin washer 618 is provided between the head of the bolt 69a and the second cover 617 for reasons such as ensuring slipperiness. '
  • seats 6 2 2 and 6 2 are provided on the force pars 6 16 and 6 17 through which the threaded portion of the cover fixing bolt 6 19 can pass.
  • the four through holes 6 2 1 and 6 2 3 are provided so as to communicate with each other.
  • the bolts 6 19 are passed through the through holes 6 2 1 and 6 2 3 in a state where the covers 6 16 and 6 17 are combined, and the cover 6 16 , 6 1 7 are assembled.
  • nut The seat 62 of 62 has a wall surface in contact with the side surface of the nut 62 as shown in Fig. 13, for example, and is formed so as to prevent the rotation of the nut 62.
  • the through hole 610 may be a round hole, but is preferably an elongated hole extending perpendicularly to both shafts 62a and 62b as in the present embodiment.
  • the bolt 69a is capable of moving through the elongated hole
  • the wedge member 68 is capable of moving toward and away from the two shafts 62a, 62b by the amount of the stroke.
  • the pressing force on one of the rotation preventing members 66 becomes smaller than the pressing force on the other rotation preventing member 66 due to a shape error of the rotation preventing members 66 and the wedge members 68, etc.
  • the rotation preventing mechanism 61 in the structure 1 of the present embodiment functions as follows. ;
  • the support arm 63 can rotate with respect to the frame 20, and the headrest 13 can be rotated with respect to the support arm 63. It is rotatable. Therefore, as shown in Figs. 24 and 25, the headrest 13 can be moved in the front-back direction while keeping the inclination constant. Alternatively, an arbitrary inclination can be set at an arbitrary position.
  • the headrest 13 is moved to a desired position, and when the holding surface can be adjusted to a desired angle, turn and tighten the port 69 a while maintaining the position and the inclination.
  • the wedge member 68 is pulled toward the head side of the bolt 69a, and the pressing inclined portion 67 of the wedge member 68 comes into contact with the pressed inclined portion 64 of the rotation preventing member 66 so that the wedge member 68 slides. Press.
  • each rotation preventing member 66 receives the pressing force and moves outward, and the pressing portion 65 pushes the first head supporting shaft 62 a and the second head supporting shaft 62 b. And tighten the shafts 6 2 a and 6 2 b between the shaft holes 63 a and 63 b.
  • the support arm 63 and the headrest 13 can be tightened only by turning the bolt 69a. Can be fixed at the same time, so that the front-rear positioning of the headrest 13 and the tilt adjustment can be performed simultaneously. Also, since the bolt 69a and the nut 69b are less likely to loosen naturally, and the two shafts 62a, 62b are maintained in a tightened state, the headrest 13 is at the desired position and angle. So that it does not move unexpectedly when supporting the head. On the other hand, the pressing force is released by loosening the tightened bolt 69a, and the support arm 63 and the headrest 13 can rotate again. Therefore, in this state, the front-rear position and the inclination of the headrest 13 can be adjusted again.
  • both the pressed inclined portion 64 and the pressed inclined portion 67 are flat, but this is only a preferable example, and the shafts 62a and 62b are tightened by a wedge action.
  • the plane There is no particular limitation on the plane as far as possible.
  • these inclined portions 4 and 7 are curved surfaces approximated to a plane. As a result, even if the wedge member 68 is not a perfect trapezoid but a shape approximated to this, the shafts 6 2 a and It is possible to prevent the relative rotation of 62b.
  • the pressing portion 65 of the rotation preventing member 66 is formed of a substantially semicircular concave surface conforming to the outer peripheral shape of the shafts 62a and 62b.
  • the shafts 62a and 62b There is no particular limitation, as long as it can exert an appropriate frictional force with the shafts 62a and 62b, even if it is in surface contact with the shafts 62a and 62b, or It may be in line contact.
  • an elastomer such as rubber which is elastically deformed in a pressed state may be provided on the holding portion 65 so as to be brought into contact with the peripheral surfaces of the shafts 62a and 62b.
  • shallow irregularities extending in the axial direction are provided on the contact surface of the holding portion 65 and the peripheral surfaces of the shafts 62a and 62b so that they can be engaged with each other in a pressed state. It is also possible to reliably prevent the relative rotation of the shafts 62a and 62b. When such irregularities are provided, the shafts 62 a and 62 b rotate relative to the support arm 63 stepwise.
  • the wedge member 68 is not limited to a member having a pressing inclined portion 67 on the side surface and pressing the rotation preventing member 66 outward, for example, holding both the rotation preventing members 66 inside.
  • the shaft may be pressed against the outer periphery of the shafts 62a and 62b.
  • a wedge member 68 shown in Fig. 26 it has a gate shape that straddles both shafts 62a and 62b, and has a press-fit inclined portion 67 that is in the form of a palm joint inside the portal foot. In this case, it is possible to press the both rotation preventing members 66 inward and tighten the shafts 62a and 62b.
  • a load is applied by sandwiching the wedge member 68 and the second cover 617 between the bolt 69a and the nut 69b, and the wedge action is naturally released by loosening the wedge member 68 and the second cover 61.
  • a return spring such as a coil spring is provided between the wedge member 68 and the second cover 61 to actively release the pressing force causing the wedge action. You may.
  • the form in which a load is applied to the wedge member 68 is not limited to the configuration in which the bolt 69 a and the nut 69 b sandwich the wedge member 68 and the second cover 617.
  • the wedge member 68 strongly presses the shafts 62a and 62b by the wedge action of the pressing inclined portion 67, and tightens the shafts 62a and 62b with the support arm 63 to prevent relative rotation.
  • the shafts 62a and 62b are tightened by the wedge member 68, but an elastomer such as rubber is provided on the surface of the pressing inclined portion 67 so that the shaft is indirectly tightened.
  • the shape can be changed as appropriate, such as a force S having the pressing inclined portion 67 as a plane and a curved surface corresponding to the periphery of the shafts 62a and 62b.
  • a cushion material that functions as a headrest 13, a backrest 15, a seat 16, and a lower knee 17 is attached to the frame 20 of the stretcher main body 2.
  • Each cushion material is fixed to a cushion material mounting bracket 27 fixed to the frame 20 by welding or the like, for example, by screwing.
  • the stretcher 1 of the present embodiment includes a retractable armrest device 7. That is, as shown in, for example, FIGS. 5 and 28, a retractable armrest device 7 is used as needed when the stretcher 1 is transformed into a wheelchair. What Note that the bogie 3 and the four-section parallel link mechanism 4 are not shown in Fig. 28. The stretcher 1 can recline the backrest 15 while being transformed into a wheelchair.
  • the retractable armrest device 7 is rotatably mounted on the side of the reclineable backrest 15, and is rotatably mounted on the armrest 73, which can be stored so as to be flush with the backrest 15, and the seat 16.
  • the armrest post 76 that can be stored so as to be flush with the member supporting the occupant, and the tip of the rotated armrest 73 and the tip of the rotated armrest post 76 are connected so that the angle can be changed.
  • At least one of the connecting means 7 7, the armrest 7 3 and the armrest support 7 6 is expanded and contracted, and the arrangement of the connected armrest 7 3 and the armrest support 7 6 is a parallelogram with respect to the backrest 15 and the seat 16. It is provided with expansion / contraction means 78 for adjusting the length so as to achieve.
  • the stretching means 78 expands and contracts the armrest 73.
  • the member supporting the occupant is, for example, the lower part of the knee 17.
  • the member supporting the seated person is not limited to the lower part of the knee 17 but may be, for example, the seat 16.
  • Fig. 29 and Fig. 30 show the armrests 73.
  • the armrest 73 is composed of a proximal arm 79 and a distal arm 710, which are connected by telescopic means 78.
  • a sleeve 711 is fixed to the proximal end of the proximal arm 79, and the sleeve 711 is fixed to the end of the intermediate pipe 213 of the frame 20 of the stretcher 1.
  • the armrest 73 is rotatably connected to the backrest 15 by being rotatably fitted into the 213a.
  • the distal arm 7110 is a hollow member that is thicker than the proximal arm 79, and the distal end of the proximal arm 79 can be inserted from the root end thereof.
  • a guide groove 712 is formed on the bottom surface of the proximal end arm 79 along the longitudinal direction. Also, a pair of guide members 7 13, 7 14 sandwiching the proximal arm 79 from both sides and two sliding bodies 7 sliding in the guide grooves 7 12 are provided in the distal arm 7 10. 15 and 7 16 are attached.
  • the guide members 7 13 and 7 14 are fixed to the distal end arm 7 10 by, for example, screws.
  • the sliding members 7 15 and 7 16 are fitted into the distal end arm 7 10.
  • the end arm 710 slides with respect to the base arm 79 until the two sliding bodies 715 and 716 hit the front and rear end walls of the guide groove 712.
  • the armrest 73 expands and contracts as a whole.
  • the expansion / contraction means 78 is provided with a hook mechanism 717.
  • the lip mechanism 7 17 locks the distal arm 7 10 with the proximal arm 7 9 with the armrest 7 3 3 extended, and a concave portion provided on the side surface of the proximal arm 7 9 7 and an extension groove 7 19 provided continuously at the tip of the guide groove 7 12.
  • the armrest 73 is extended, and the sliding body 7 15 on the distal end is brought into contact with the end wall of the guide groove 7 12.
  • the edge 7 13 a of one of the guide members 7 13 fits into the recess 7 18 and the armrest 7 3 cannot be reduced. That is, after the distal arm 7 10 is pulled out straight along the guide groove 7 12 and then slightly rotated in the horizontal direction around the proximal sliding body 7 16, the distal arm 7 10 It can be locked to the proximal arm 79.
  • the locking of the distal end arm 7110 can be released, and the armrest 73 can be contracted.
  • Fig. 31 and Fig. 32 show the armrest support 76.
  • a sleep 720 is fixed.
  • the armrest post 76 is fitted. Is rotatably connected to the backrest 15.
  • the connecting means 77 includes an outer unit 721 and an inner unit 72.
  • the outer unit 721 is fixed to the distal end of the arm 710 of the armrest # 3
  • the inner unit 722 is fixed to the distal end of the armrest post 76.
  • the outer unit 72 1 may be fixed to the tip of the armrest support column 76
  • the inner unit 72 2 may be fixed to the tip of the distal arm 7110 of the armrest 73.
  • the outer unit 7 21 includes a housing 7 2 3 provided with an opening 7 2 a on the peripheral surface, a partition member 7 2 4 housed in the housing 7 2 3, and a release protruding from the housing 7 2 3 Button 7 2 5 and between partition member 7 2 4 and release button 7 2 5 It is composed of a coil spring 7 2 6 provided at the center.
  • the partition member 724, the release button 725, and the coil spring 726 are provided on the left and right sides of the housing 723, respectively.
  • the left and right partition members 724 are fixed to the housing 723.
  • the release button 7 25 protrudes from the housing 7 2 3 by the elastic force of the coil spring 7 2 6, but when the release button 7 2 5 is depressed against the elastic force of the coil spring 7 2 6 A protrusion 725a provided on the inner surface of the button 725 projects inward from the hole 724a of the partition member 724.
  • the inner unit 722 includes a housing 727, a pair of convex members 728 protruding from the housing 727, and a coil spring 729 provided between the pair of convex members 728. Have been.
  • the protruding member 7 2 8 protrudes from the housing 7 2 7 .
  • the force can be retracted into the housing 7 2 7 by contracting the coil spring 7 2 9, so that the inner unit 7 2 2 can be retracted into the outer unit 7 2 1 housing It can be inserted into the 723 or pulled out of the housing 723.
  • the convex member 7 2 8 protrudes and is hooked on the partition member 7 2 4.
  • the inner unit 7 22 cannot be removed from the outer unit 7 2 1, and the outer unit 7 2 1 and the inner unit 7 2 2, that is, the tip of the armrest 7 3 and the tip of the armrest post 76 are connected. .
  • the opening 72 3 a provided in the housing 72 3 of the outer unit 72 1 is formed to be larger than the cross-sectional area of the armrest support 76. Therefore, the connection angle between the armrest 73 and the armrest support 76 can be changed.
  • a support member 730 is fixed to the first vertical pipe 210 of the frame 20 of the stretcher 1.
  • Armrest 7 3 3 When placed on the lumber 730, the armrest 73 and the backrest 15 are coplanar, and the armrest 73 can be used as part of the backrest 15.
  • ⁇ the armrest 73 and the backrest 15 are the same plane '' means that the surface supporting the seated person of the backrest 15 and the surface supporting the seated person of the armrest 73 stored are exactly. This does not only mean the case where the surfaces are substantially the same, but also includes the case where these surfaces are substantially the same.
  • a support member 731 is fixed to the third vertical pipe 230 of the frame 20.
  • the armrest post 76 and the lower knee 17 are coplanar, and the armrest post 76 can be used as a part of the lower knee 17 .
  • the armrest post 76 and the lower part of the knee 17 form the same plane means that the surface supporting the occupant of the armrest post 76 and the surface of the lower part 17 supporting the occupant are exactly the same plane. This does not mean only the case where the two planes meet, but also the case where these planes are almost the same plane.
  • the armrest device 7 When using the armrest device 7 in the stored state, assemble the armrest device 7. That is, as shown in Fig. 35, the armrest support column 76 housed beside the lower part of the knee 17 is caused to rotate. In addition, rotate armrests 73 stored on the sides of backrest 15 and extend them while pulling down. Then, after fixing the length of the armrest 73 with the locking mechanism 171, the outer unit 702 at the tip of the armrest 723 is attached to the inner unit 722 of the tip of the armrest 136 as shown in Fig. 334, as shown in Fig. 34. 2 Insert 1 so that it covers. As a result, the armrest 73 and the armrest support 76 are connected, and the assembly is completed.
  • the lock mechanism 717 that fixes the length of the armrest 73 is not released.
  • the lock mechanism 717 in order to release the lock mechanism 7 17, it is necessary to slightly rotate the distal end arm 7 10 of the armrest 7 3 to change the direction, but the outer unit 7 2 1 of the connecting means 7 7 Since it is fitted into the inner unit 7222, the direction of the distal arm 7110 cannot be changed. Therefore, the lock mechanism 717 is not unintentionally released while the armrest 73 is used, and the use of the armrest 73 can be continued.
  • the armrest support 76 When storing the armrest device 7, it is good to disconnect the armrest 73 and the armrest post 76. Then, the armrest support 76, which has been raised, is laid down and placed on the support member 731. As a result, the armrest support 76 can be stored beside the knee lower part 17. Also, Lift down the armrest 73 while shrinking it, and put it on the support member 70. This allows armrest ⁇ 3 to be stored beside backrest 15.
  • the armrest support 7 6 is flush with the lower knee 17 and the armrest 73 is flush with the backrest 15, so that the armrest 7 can be stowed out of the way.
  • the armrest post 76 can be used as part of the lower knee 17, and the armrest 73 can be used as part of the backrest 15.
  • the lower knee 17 and the backrest 15 can be widened and used, or the backrest 15 and the lower knee 17 can be narrowed by the armrest 73 and the armrest support 76 so that the strainer 1 can be used. It can be made compact.
  • the stretcher 1 When the stretcher 1 is used after being transformed into a wheelchair, storing the armrest device 7 makes it easier for a person with a physical disability to get on and off from the side.
  • the armrest 73 can be used, and it is possible to prevent a seated person with a disability from falling.
  • the armrest 73 is provided with a telescopic means 78, when the armrest 73 and the armrest post 76 are connected, the arrangement of the armrest 73 and the armrest post 76 becomes the backrest 15 And the length of the armrests 73 can be adjusted so as to form a parallelogram with respect to the seat 16. That is, when the armrest 73 is used, the armrest 73, the armrest post 76, the backrest 15, and the seat 16 can be arranged in a parallelogram as viewed from the side of the stretcher 1. Therefore, as shown in Fig. 36, even if the backrest 15 is reclined, in other words, if the angle of the backrest 15 with respect to the seat 16 is changed, the angle of the armrest 73 with respect to the seat 16 is constant.
  • the armrest can be used without any discomfort.
  • the armrest 73 is provided with expansion / contraction means 78 to adjust the length of the armrest 73 so as to form the above-described parallelogram, but instead of the armrest 73, an armrest post is used.
  • the above-mentioned parallelogram may be formed by providing an expansion / contraction means 78 on the arm 76 and adjusting the length of the armrest support 76.
  • both the armrest 73 and the armrest support 76 may be provided with expansion and contraction means 78, and the length of both may be adjusted to form the above-described parallelogram.
  • the expansion and contraction means 7 It is not necessary to provide 8.
  • the armrest post 76 is stored on the side of the lower part 17 of the knee, but the armrest post 76 may be stored on the side of the seat 16.
  • the armrest 73 described above is arranged such that the distal arm ⁇ 10 is arranged at the top during storage, the base arm 79 is arranged at the bottom, and the armrest support column 76 is rotated by pulling it down in use. However, it may be turned upside down when used and connected to the armrest support column 76.
  • the configuration including the retractable armrest device 7 is a preferred example, but is not necessarily limited to this configuration.
  • an armrest support is attached to the seat portion 22 of the frame 20 so as to be perpendicular to the seat surface.
  • An armrest may be attached to this armrest support.
  • the armrest may be slidable in parallel with the seat surface, and the armrest may form a part of the surface of the bed when the stretcher body 2 is in the bed state.
  • a part of the body of a patient sitting on the stretcher 1 in a chair state or lying on the stretcher 1 in a bed state It has a body support mechanism 8 that can maintain a stable posture or a comfortable posture by supporting the patient.
  • the core member of the support member or at least a portion of the support member itself that requires deformation of the support surface is divided into a plurality of parts, and the divided core members or support members can be connected to each other. It is configured by being connected by a bending mechanism 81.
  • the structure 1 of the present embodiment includes a headrest 13 as a head support member and a waist support member for supporting the patient's head, waist, and legs.
  • a body support mechanism 8 is provided on each of the backrest 15 and the seat 16 as a support member of the leg.
  • the body support mechanism 8 provided in the headrest 13 will be described first.
  • the headrest 13 is provided so as to hold a patient's head transferred to the structure 1 and to maintain a stable posture or a comfortable posture.
  • a plate-shaped core material is covered with a cushion material. It has a broken structure.
  • this core material Is divided into three parts: a central part 8 18 attached to the frame 20 of the stretcher 1, and a left part 8 19 and a right part 8 20 provided on both sides of the central part 8 18.
  • the part 8 19 and the right part 8 20 can be tilted so as to jump up from the flat state, so that the left part 8 19 and the right part 8 20 can be flipped up as necessary.
  • the patient's head can be held from one or both sides. As shown in Fig.
  • the core material of the headless rod 13 of the present embodiment is substantially square and has a central portion 8 18 having protrusions and the like, and Figs. It is constructed by combining the three members of the left part 8 19 of the shape shown and the left part 8 19 and the right part 820 of the symmetrical shape as shown in Fig. 39 to Fig. 41. .
  • each part 8 18 to 8 20 has a through hole 8 for attaching the fixed side member 85 or the tilting side member 86 of the flexible mechanism 81.
  • 18 a, 8 19 a, and 8 20 a are provided, and a through hole 8 18 b for attaching the headless 13 to the frame 20 is provided in the central portion 8 18.
  • the left side portion 8 19 or the right side portion 8 20 and the central portion 8 18 are a flexible mechanism 8 that can be bent so that the left side portion 8 19 or the right side portion 8 20 can be flipped up. Connected by one.
  • the flexible mechanism 81 will be described below. As shown in Figs. 45 to 47, the flexible mechanism 81 has a fixed side member 85 and a tilting side member 86 connected in a bendable manner by a hinge-like structure. As shown in Fig. 39 to Fig. 41, two are provided on the side of the central part 8 18 to connect the left part 8 19 or the right part 8 20 with the central part 8 18 .
  • the flexible mechanism 81 includes a fixed side member 85 having a plurality of overlapping plates 87, 88 arranged in parallel at intervals, and a overlapping plate 87, 82 of the fixed side member 85.
  • a tilting member 86 having a plurality of overlapping plates 87 and 88 alternately overlapping with 8 8, and a overlapping portion of each overlapping plate 87 and 88 of the fixed side member 85 and the tilting member 86.
  • the tilting member 86 rotates around the connecting shaft 812 to tilt a part of the core material, that is, the left side portion 819 and the right side portion 8200, and the both overlapping plates 87, 88
  • the angle is maintained by utilizing the frictional force at the contact portion, and the shape of the support surface of the headrest 13 is maintained.
  • one of the two members that tilt relatively is called the fixed side and the other is called the tilting side.
  • the concept of the fixed side and the tilting side are merely relative, for example,
  • the fixed side member 85 may be tilted on the fixed side.
  • the fixed-side member 85 is composed of one base plate 89, and a plurality of superposed plates 87, 88 mounted on the base plate 89. As shown in Figs. 44 and 45, this fixed-side member 85 is screwed to the base material of the headless 13, specifically, the central portion 8 18 on the base plate 89. Through holes 89b are provided.
  • the number of the overlapping plates 87, 88 of the fixed side member 85 is preferably large from the viewpoint of securing a large contact area between the plates, but also taking into consideration the weight and cost when the number of parts is increased. Is used to determine the number of sheets to be used. For example, in the present embodiment, the number is four as shown in the figure, but may be more or less.
  • Each of the superposed plates 87, 88 is provided with claws 87a, 88a for attaching the superposed plates 87, 88 to the base plate 89, and the base plate 89 has these claws 87a. , 88a are provided with mounting holes 89a.
  • the one located at the end is a cutout groove provided on the edge of the base plate 89 as shown in Fig. 44. May be.
  • the overlapping plate 87 can be attached to the base plate 89 even if the claws are fitted from the side instead of being inserted into the holes.
  • These superposed plates 87, 88 are arranged in parallel on a base plate 89, with each plate being separated by a predetermined distance.
  • the arrangement intervals of the superposed plates 87, 88 are made constant, and the distance between the plates is made to match the thickness of the superposed plates 87, 88.
  • All of the superposed plates 87, 88 may be fixedly attached to the base plate 89 so that there is no wobble, but two of the four It is preferable that the overlapping plate 88 is movable to a degree that it is slightly wobbled, so that the four overlapping plates 8 7, 8 8 of the fixed side member 85 and the tilting side member 86 are alternately arranged.
  • the outside The two overlapping plates 87 arranged on the base plate are fixed, and the claws 87 a are provided with mounting holes 89 a or mounting grooves of the base plate 89 as shown in FIGS. 50 to 52. It is a projection-shaped claw that is fitted to 89a so that it can be fixed by welding or the like in a state where the overlap plate 87 is aligned.
  • the two superposed plates 88 placed inside are engaged with the base plate 89 with the engaging claws 88a so as to be movable with respect to the base plate 89.
  • the engaging claws 88 a are provided to allow the individual overlapping plates 88 to tilt in the overlapping direction as shown in FIG. 53, but not to come off from the fixed base plate 89.
  • it is formed in a hook shape as shown in Fig. 49.
  • the claws 88a are turned outward so that the engaging claws 88a are reversed even if the flexible mechanism 81 repeats the bending operation. It is easy to prevent the sliding out of the mounting hole 89a.
  • FIG. 50 to FIG. 52 An example of attaching these superposed plates 87, 88 to the fixed base plate 89 is shown in FIG. 50 to FIG. 52.
  • the rate 87 is fixed to the base plate 89, and then the movable overlapping plate 88 is inserted into the mounting hole 89a with its engaging claw 88a and slid to the base plate 89. I'll try to attach it.
  • the movable stacking plate 88 can be tilted toward any fixed stacking plate 87 located outside.
  • the polymerization plates 87 and 88 are provided with through holes 87 b and 88 b, respectively. As shown in FIG.
  • the through holes 87 b and 88 b are provided at positions that are rotation centers when the tilting member 86 rotates relative to the fixed member 85.
  • the fixed-side member 85 and the tilting-side member 86 are overlapped so that their respective rotation centers, that is, the through holes 87b, 88b coincide with each other.
  • the connecting shaft 8 1 2 is inserted into 8 b and is connected in a tiltable state.
  • the fixed side member 85 is composed of the base plate 89 and the overlapping plates 87, 88 attached to the base plate 89, and the tilting side member 86 is also similar to the fixed side member 85. And a superposed plate 8 7, 8 8 attached to the base plate 8 10.
  • the base plate 810 provided with the mounting holes 810a or the mounting grooves 810a is provided with the overlapping plates 87, 8 having the same shape as the fixed member 85. 8 is attached in the same manner as described above to constitute the tilting side member 86.
  • the base plate 8100 has a through hole for screwing the tilting member 86 to the left side 819 or the right side 8200.
  • a hole 8110b is provided.
  • the fixed side member 85 and the tilting side member 86 formed in this way are overlapped with the overlapping plates 87, 88 on the fixed side member 85 side and the tilting side member 86 side.
  • the plates 87 and 88 are alternately overlapped with each other so as to be staggered, and a hinge-shaped flexible mechanism 81 that can be bent by being pin-connected with a connecting shaft 812 is configured.
  • the fixed base member 85 and the tilting member 86 are opened 180 degrees and both base plates 8 9, 8 1 The inner edges of 0 are in contact with each other so that they will not tilt further. Therefore, the foldable flexible mechanism 81 can freely adjust the opening angle within a range of up to a maximum opening angle of 180 degrees.
  • the overlapping plates 87, 88 of the fixed side member 85 and the overlapping plates 87, 88 of the tilting side member 86 are alternately overlapped, so that they are in contact with each other.
  • the tilting angle of the tilting side member 86 with respect to the fixed side member 85 can be maintained using the frictional force of the overlapping portion.
  • the radius mechanism 81 in this case is used as a part of the mechanism constituting the body support mechanism 8, it can be easily adjusted so as to obtain a desired angle, and the load is adjusted after the adjustment. It is preferable that the angle does not easily change even when an external force is applied. Therefore, in the present embodiment, it is necessary to tighten the overlapping plates 8 7, 8 8 with the connecting shaft 8 12 described above, and the urging means 8 for urging the overlapping plates 8 7, 8 8 in the overlapping direction. 1 1 is provided.
  • the biasing means 8 11 is, for example, a coil spring arranged around the connecting shaft 8 12 as shown in FIGS. 44 and 47, and includes two stepped rings 8 13 sandwiching both ends of the spring.
  • the polymerization plates 87 and 88 are urged against each other via one of them.
  • a double nut 8 14 is provided at one end of the connecting shaft 8 12, and by changing the position of the double nut 8 14 on the shaft, the total length of the coil spring is changed and the biasing force is changed. Can be changed.
  • the coil spring shown here is a preferred example of the biasing means 811, any coil spring capable of biasing the overlapping plates 87, ′ 88 and more preferably adjusting the frictional force can be used. There is no particular limitation.
  • the flexible mechanism 81 of the present embodiment is attached to the back surface of the core material of the headrest 13 by attaching means 15 composed of, for example, bolts and nuts.
  • attaching means 15 composed of, for example, bolts and nuts.
  • the left and right sides 8 19 and 8 20 are lowered to the lowest, as shown in Fig. 40, these both sides 8 19 and 8 20 and the central part 8 18 between them have the same plane.
  • the left side portion 819 and the right side portion 820 can operate independently, and the tilt can be adjusted independently of each other, for example, by flattening one and tilting the other.
  • the headrest 13 of the stretcher 1 has a shape suitable for the body support, that is, By tilting the left side portion 8 19 or the right side portion 8 20 in a flipped-up state, it is possible to appropriately support the patient's head so that it is always centered.
  • the left portion 8 19 and the right portion 8 20 can be tilted independently and steplessly, only one of the headrests 13 can have a desired shape.
  • both side portions 8 19 are only flattened even when the state of the lowering is the highest, and the headrest of the patient is not tilted in the opposite direction to drive the head of the strainer 1 to the end.
  • a frictional force is given by the urging means 8 11 which can adjust the urging force. With this configuration, sufficient frictional force can be obtained, and it is possible to maintain the jumped-up state.
  • the biasing force should not be too strong and the sides 8 19, 8 20 should be relatively easy to move.
  • the sides 8 1 8 The user, etc. can customize by himself / herself, for example, by increasing the urging force in order to prevent the 9, 8, 20 from dropping unexpectedly, that is, to obtain the frictional force according to the patient's weight and physique difference. It is easy. Further, according to such a stretcher 1, even when the shape is changed to a chair, it is possible to provide a comfortable posture in which the back of the head is leaned.
  • a patient using the stretcher 1 of the present embodiment is required to be in a supine position or a comfortable sitting or supine position when a stable sitting position is supported by supporting a part of the body, for example, the head. Will be retained.
  • a part of the body protrudes from the bed or the supine posture collapses Is prevented. Therefore, from the viewpoint of the patient, there is no need to apply excessive force to maintain the posture, and even if the posture is suddenly brought to the edge of the bed by changing the posture or turning over, the patient may fall accidentally. You can have a sense of security and trust that there is no such thing.
  • the stretcher 1 supports the patient's waist or leg at a portion other than the headrest 13, specifically, a seat back 16 at a portion corresponding to the patient's waist and a seat 16 at a portion corresponding to the leg.
  • the body support mechanism 8 provided at the part corresponding to the lumbar region functions to prevent the patient's lumbar region and its surroundings from leaning to the side of the stretcher 1 and maintain the patient's stable or comfortable posture. I do.
  • the core 15 mainly serves as the backrest 15 when the stretcher 1 has a chair shape while supporting the upper body of the patient.
  • a flip-up body support mechanism 8 is provided.
  • the left portion of the jumping portion is referred to as “left portion 8 19 ′”
  • the right portion is referred to as “right portion 8 20 ′”.
  • the left portion 8 19 ′ and the right portion 8 20 Although it is smaller than the left and right sides 8 19 and 8 20 of the lifting type, this is merely an example and the size and shape are not particularly limited.
  • Each of the left side portion 8 19 ′ and the right side portion 8 20 ′ is connected to the core 15 a by a pair of flexible mechanisms 81, and can be flipped up, similarly to the case of the headrest 13. .
  • the flexible mechanism 81 used here is the same as in the headrest 13.
  • the inclination of the left side portion 8 19 and the right side portion 8 20 ′ can be adjusted independently of each other with respect to the core material 15 a, for example, by flattening one side and tilting the other.
  • the stretcher 1 can support the patient's waist from one or both sides by jumping up the left part 8 19 ′ and the right part 8 20 ′ as necessary.
  • the left side 8 19 ′ and the right side 8 20 ′ can be bent forward to support the patient's waist from one or both sides as necessary.
  • the term "waist" is used.However, even if the patient's physique is different, the purpose of saboting around the patient's waist is the original purpose.
  • the waist includes not only the waist in the strict sense but also the upper part, that is, the part closer to the back and the lower part, for example, the buttocks.
  • the body support mechanism 8 provided at the portion corresponding to the leg functions to prevent the patient's leg from approaching to the side of the strainer 1 and maintain the patient's stable or comfortable posture.
  • the struts 16 mainly support the lower body of the patient, particularly the legs, and are provided on both sides of the core 16 a of the portion 16 serving as the seat 16 when the stretcher 1 has a chair shape.
  • the body support mechanism 8 is provided.
  • the left part of the jumping part is referred to as “left part 8 19”
  • the right part is referred to as “right part 8 20”.
  • the left side 8 19 “and the right side 8 20” are different from the left side 8 19, 8 19 'and the right side 8 20, 8 20' described above, and are near the root of the thigh.
  • the shape is elongated so as to be able to support from to around the knee, but this is only an example and the size and shape are not particularly limited.
  • each of the left side portion 8 19 ′′ and the right side portion 20 ′′ is connected to the core 16 a by a pair of flexible mechanisms 81, and can be flipped up similarly to the case of the headrest 13.
  • the flexible mechanism 81 used here is the same as in the headrest 13.
  • the left part 8 19 “and the right part 8 20” are mutually connected with respect to the core material 16a, for example, by flattening one side and tilting the other.
  • the tilt can be adjusted independently.
  • the left side portion 8 19 “and the right side portion 8 20” can be flipped up as needed to support the patient's leg from one or both sides.
  • the stretcher 1 is in a chair shape, the thigh of the patient sitting on one side or both sides by popping up the left side 8 19 "right side 8 20" as necessary may be used. Can be supported from ,
  • the both sides 8 19, 8 20 of the body support mechanism 8 can be tilted steplessly so that the tilt can be adjusted steplessly. May be.
  • radial irregularities centered on the connecting shaft 8 12 are provided at fixed angles, and both sides 8 19, 8 20 are set at a fixed angle. If the concave portion and the convex portion are engaged each time it is tilted, both side portions 819 and 820 can be tilted stepwise. In this case, the step width at the time of tilting can be freely set by adjusting the interval between these irregularities.
  • the overlapping plates 87, 88 have the same thickness, and are arranged at regular intervals on the base plates 89, 810. It does not need to be constant.
  • the flexible mechanism 81 is similar to the present embodiment. Can be formed.
  • the body support mechanism 8 provided to support the patient's head, waist, and legs has been described.
  • these are preferred examples of the body support mechanism 8, and By appropriately changing the position and shape of the body, it can function as a mechanism that can support any other part of the body such as the neck, shoulder, back, arm, lower leg, and ankle.
  • the body support mechanism 8 provided at the part corresponding to the waist may support not only the waist but also the upper part of the body over a wider range.
  • the body support mechanism 8 provided on the barrel may be specifically supported around the knee. It should be noted that the portion of the support surface where deformation is required Although the number of divisions may vary depending on the part to which it is applied, the body support mechanism 8 can be applied if there is at least one tiltable member with respect to the fixed member.
  • the expansion and contraction mechanism that can be employed in the stretcher of the present invention is not limited to the above-described example.
  • a hydraulic cylinder that expands when pressure oil is supplied and contracts when pressure oil is discharged is used.
  • a hydraulic supply / discharge unit that supplies and discharges pressure oil to and from the hydraulic cylinder may be used.
  • the hydraulic cylinder is, for example, a device having a cylinder part, a piston part slidably inserted into the cylinder part, a cylinder chamber surrounded by the cylinder part and the biston part, and the like.
  • the hydraulic supply / discharge unit includes, for example, an oil tank, an oil pump that sucks oil from the oil tank and sends the sucked oil to the cylinder chamber of the hydraulic cylinder, and an oil pump and a cylinder chamber of the hydraulic cylinder.
  • This device has an oil supply path to be connected, an oil discharge path connecting the cylinder chamber of the hydraulic cylinder and the oil tank, a pressure relief valve for opening and closing the oil discharge path, and the like.
  • the oil pump it is preferable to use a pedal-type oil pump that can perform a pump action by a stepping action. In this case, the operator does not need to bend down to the lower portion of the stretcher 1 and can perform the extension operation of the extension mechanism 5 while standing.
  • the telescopic mechanism 5 when an oil supply operation is performed by the oil pump with the pressure release valve closed, the oil is supplied to the cylinder chamber of the hydraulic cylinder, and the piston is extended with respect to the cylinder by the hydraulic pressure. I do.
  • the pressure relief valve when the pressure relief valve is opened, oil is discharged from the cylinder chamber of the hydraulic cylinder to the oil tank, and the piston contracts.
  • the biston part contracts, the velocity proportional type attenuation is developed by the oil, and the sudden fall of the stretcher body 2 is prevented.
  • FIGS. 54 to 66 an example of a stretcher employing a telescopic mechanism having a hydraulic cylinder and a hydraulic supply / discharge unit will be described with reference to FIGS. 54 to 66 as a second embodiment of the present invention.
  • a hydraulic jack 5 in which a hydraulic cylinder and a hydraulic supply / discharge unit are integrated, is used as a telescopic mechanism.
  • the hydraulic cylinder and the hydraulic supply / discharge unit do not need to be integrated, and they may be separately arranged.
  • the hydraulic jack 5 ′ includes a hydraulic cylinder 91, an oil tank 92, an oil pump 93, and a release device 94, as shown in FIGS. 63 to 66, for example. Attached to 9-5.
  • the hydraulic cylinder 91 has a cylinder part 91a, a piston part 91b slidably inserted into the cylinder part 91a, and a cylinder part 91a.
  • the oil tank 92 is formed around the cylinder section 91a.
  • the oil pump 93 has a pump cylinder 93a, a pump piston 93b slidably inserted into the pump cylinder 93a, a pump cylinder 93a and a pump cylinder 93b. It has a pump chamber 93c surrounded by bistons 93b, and a ring 93d as a sealing material for preventing oil leakage from the pump cylinder 93a.
  • the base 95 has an oil suction path 96a connecting the oil tank 92 and the pump chamber 93c, and an oil supply path 96b connecting the pump chamber 93c and the cylinder chamber 91c. And an oil discharge passage 96 c connecting the cylinder chamber 91 c and the oil tank 92. As shown in Fig. 66, the oil suction passage 96a allows the oil flow from the oil tank 92 to the pump chamber 93c and prevents the reverse flow.
  • a valve 96 d is arranged. The first check valve 96d opens the oil suction passage 96a by the operation that the pump piston 93b projects from the pump cylinder 93a, and the pump piston 93b enters the pump cylinder 93a.
  • the operation serves to close the oil suction passage 96a.
  • a second spherical check valve 96 e is arranged in the oil supply passage 96 b to allow the flow of oil from the pump chamber 93 c to the cylinder chamber 91 c and prevent the reverse flow. I have.
  • the second check valve 96 e opens the oil supply passage 96 b by the operation that the pump piston 93 b is immersed in the pump cylinder 93 a, and the operation that the pump piston 93 b projects from the pump cylinder 93 a. This serves to close the oil supply path 96b.
  • the release device 94 that opens and closes the oil discharge passage 96c includes, for example, a spherical pressure relief valve 94a disposed in the oil discharge passage 96c and a release screw 94b.
  • the release screw 94 b is attached to the base 95 by, for example, a screw structure. Turn release screw 94b in the tightening direction to release screw. — The end of 94b presses the pressure relief valve 94a, and the pressed pressure relief valve 94a closes the oil discharge passage 96c.
  • the oil tank 92 When oil flows from the pump chamber 93 c into the pump cylinder 93 a, the oil flows from the pump chamber 93 c to the cylinder chamber 91 c. Therefore, oil is pumped from the oil tank 92 to the cylinder chamber 91c by the reciprocating operation of the pump piston 93b.
  • the first check valve 96d and the second check valve 96e prevent the oil from flowing backward.
  • the piston part 91b extends with respect to the cylinder part 91a.
  • the release screw 94b is loosened, the oil discharge passage 96c is opened, oil is discharged from the cylinder chamber 91c to the oil tank 92, and the piston portion 91b contracts.
  • the allowable movement amount of the pressure relief valve 94a changes, and the size of the oil discharge passage 96c also changes.
  • the hydraulic jack 5 is not necessarily limited to the one having the above-described configuration, and another existing one or a new one may be adopted.
  • the hydraulic jack 5, as shown in Figs. 54 to 62, is housed in a jack case 97, for example, and fixed to the bottom of the jack case 97 by screwing. Is done.
  • the jack case 97 has an open upper surface, and both side surfaces are attached to the link support member 41.
  • a mounting member 100a is fixed to the lower end of the link support member 41, and the mounting member 100a and the side wall of the jack case 97 are screwed through, for example, a spacer 100b. Fixed.
  • a bracket 100c is fixed to each of the two first connecting rods 423 in the 4-bar parallel link mechanism 4, and a connecting shaft 100d for connecting these brackets 100c is provided.
  • the jack case 97 is arranged at a position where the connecting shaft 100 d rotating together with the four-bar parallel link mechanism 4 and the tip of the linearly expanding and contracting biston portion 91 b always contact. Therefore, the four-node parallel link mechanism 4 is rotated by the expansion and contraction of the piston part 91b.
  • the tip of the piston portion 91 b is in contact with the pipe 100 e through which the connecting shaft 100 d rotatably penetrates, and the pipe 100 e and the piston
  • the part 9 1b is covered with an elevating cover 97 a.
  • a cover 97 b is attached to the open upper surface of the jack case 97.
  • the cover 97 b has a hole through which the lifting force par 97 a can come and go.
  • a gap is provided between the piston part 91b and the cylinder part 91a and the elevating cover 97a so as not to hinder the expansion and contraction of the piston part 91b.
  • These covers — 97 a and 97 b close the jack case 97 to the extent that it does not hinder the expansion and contraction of the piston part 91 b, preventing dust and foreign matter from entering the jack case 97. Can be prevented.
  • the hydraulic jack 5 ′ is fixed to the link support member 41, and the tip of the biston portion 91 b is always in contact with the four-bar parallel link mechanism 4.
  • the configuration is not limited to this, and the hydraulic jack 5 ′ may be arranged in a positional relationship in which the four-bar parallel link mechanism 4 is rotated by expansion and contraction.
  • the jack case 97 is rotatably attached to the link support member 41, and the tip of the piston portion 91b is rotatably attached to the four-section parallel link mechanism 4.
  • the hydraulic jack 5 ′ may be rotated following the rotation of the four-bar parallel link mechanism 4.
  • the stretcher 1 of the present embodiment includes an elevating pedal mechanism for operating the oil pump 93 by operating a pedal.
  • This lifting / lowering pedal mechanism has a lifting / lowering pedal 101 that is movably mounted on the cart 3 and a lifting / lowering link 102 that converts the displacement of the lifting / lowering pedal 101 into an operation for the wheel pump 93. are doing.
  • the elevating pedal 101 is attached to the cart 3 in a rotatable manner, for example.
  • the rotating shaft 101 with the longitudinal direction of the stretcher 1 as the axial direction is supported by the bearing 100 j provided on the jack case 97 so that it can rotate.
  • An elevating pedal 101 is fixed to a portion protruding from the jacket case 97 with a screw.
  • the lifting pedal 101 is rotated so that the operator's foot that operates the lifting pedal 101 and the lifting pedal 101 does not contact the base member 32 of the bogie 3. It has a bent shape that extends from a to approach the ground surface side and then extends substantially horizontally.
  • the elevating link 102 includes, for example, an elevating first link 102 a that rotates integrally with the elevating pedal 101, a rotatable support relative to the carriage 3, and an elevating first link 1. 0 2 a and the oil pump 93, and the first link for raising and lowering 110 2.
  • Link 102b In the case of this configuration, the number of links can be reduced, so that the configuration can be made compact. Since there is enough space for storing parts, there is no need to reduce the thickness of the parts, and the strength of the parts can be sufficiently increased. The following advantages can be obtained: the number of parts can be reduced, and the cost can be reduced.
  • the lifting link 102 is not limited to this example as long as it can convert the operation of the lifting pedal 101 into an operation for the oil pump 93.
  • the rotating shaft 101 of the lifting pedal 101 is penetrated by the cylinder 101b force S, which is fixed to this rotating shaft 101a by screwing.
  • the first link 102a is fixed to the cylinder 101b.
  • a plate 100 f is fixed to the inner surface of each side wall of the jack case 97 with screws.
  • Two support plates 100 g are stretched between 100 f.
  • the second lifting link 102b is mounted between the two support plates 100g by a rotation axis 100h parallel to the rotation axis 101a of the lifting pedal 101. Have been.
  • the portion of the second link 102b for lifting and lowering that contacts the first link 102b for lifting and lowering and the pump piston 93b is substantially circular, so that the contact between the members can be performed smoothly. .
  • a cylindrical contact portion 100i that is in contact with the first link 102a for lifting is fixed to the second link 102b for lifting.
  • the rotating shaft 101 a is disposed closer to the portion where the lifting pedal 101 is depressed than the oil pump 93 disposed substantially at the center of the jacket case 97, and the rotating shaft 100 h Is located between the oil pump 93 and the rotating shaft 1 O la.
  • the second link 102 b for lifting and lowering is always provided with the first link 102 a for lifting and lower and the pump biston 93 b on its lower surface. They are arranged so as to touch.
  • lifting and lowering pedal mechanisms are provided on both left and right sides of the stretcher 1.
  • the two lifting pedal mechanisms are basically symmetrically arranged, and the left and right second lifting links 102b, which are the overlapping parts, are arranged so as to be staggered, for example, as shown in Fig. 56. ing. Since the left and right lifting pedals 101 are connected to different lifting links 102, respectively, the left and right lifting pedal mechanisms operate independently.
  • the elevating pedal mechanism is provided with a means for returning the depressed elevating pedal 101 to the original position.
  • a spring hook 101c is fixed to the cylinder 101b that rotates integrally with the lifting pedal 101, and the above-mentioned spring hook 101c is fixed between the left and right spring hooks 101c.
  • a tension coil spring 103 is attached as a return means.
  • a spring receiver 1 15 receiving the return force of the compression coil spring is fixed to the tip of the pump piston 93 b.
  • the lifting pedal 101 depressed by the return force of the tension coil spring 103 returns to the original position, and the compression coil spring 104
  • the pump piston 93 b pushed into the pump cylinder 93 a by the resetting force returns to the original position. Therefore, by stepping on one of the right and left lifting pedals 101, the pump piston 93b reciprocates.
  • the stretcher 1 of the present embodiment includes a release pedal mechanism for operating the release device 94 by operating the pedal.
  • the release pedal mechanism has a release pedal 105 that is displaceably attached to the carriage 3 and a release link 106 that converts the displacement of the release pedal 105 into an operation for the release device 94. are doing.
  • the release pedal 105 is rotatably attached to, for example, the trolley 3, and is arranged on each of the left and right sides of the stretcher 1.
  • the tip of the rotating shaft 105a of the two left and right release pedals 105 is inserted into the bearing 100k provided in the jack case 97, with the left and right directions of the strainer 1 as the axial direction. And is inserted into one cylindrical body 105 b arranged in the jack case 97 and fixed to the cylindrical body 105 b with screws. Therefore, the two left and right release pedals 105 and the cylinder 105b rotate integrally.
  • the release pedal 105 is bent, for example, away from the elevating pedal 101 so as not to contact the elevating pedal 101.
  • the release link 106 is, for example, a release first link 106a that rotates integrally with the release pedal 105, and a release that rotates integrally with the release screw 94b.
  • Third link 106c Third link 106c.
  • the first release link 106a is fixed to the cylinder 105b.
  • One end of the second link for release 106 b is fixed to the release screw 94 b, and a connection hole 107 for connecting the third link for release 106 c is formed on the other end.
  • the third link for release 106 c has a rotating shaft 100 m rotatably connected to the first link for release 106 a at one end, and a second release shaft at the other end.
  • a pressing shaft 108 is provided to be inserted into the connection hole 107 of the link 106b.
  • the rotation axis of the release screw 94b and the rotation axis 105a of the release pedal 105 are not parallel, but the rotation of the release third link 106c is not parallel.
  • the diameter of the pressure shaft 108 is smaller than the diameter of the connection hole 107 of the second link for leasing, the displacement of the pressing shaft 108 rotates the second link for release 106 b. Configured.
  • the release pedal mechanism is provided with a means for returning the released pedal 105 to the original position.
  • a case-side spring hook portion 100 n is provided inside the jack case 97, and a pedal-side spring hook portion 105c is provided on the first link for release 106a.
  • the pedal-side spring hook portion 105c is fixed at a position symmetrical to the release first link 106a on the cylindrical body 105b, and the case-side spring hook is provided.
  • a tension coil spring 109 is attached between the part 100 n and the pedal-side spring hook part 105 c as the above-mentioned return means.
  • the stretcher 1 of the present embodiment is provided with a brake mechanism for increasing the force required to displace the release pedal 105 in accordance with the amount of the displacement.
  • the brake mechanism includes a pressing member 110 that is displaced integrally with the release pedal 105 and a disengagement of the pressing member 110 when the release pedal 105 is displaced within a certain range.
  • a resilient member 111 that is engaged with the pressing member 110 by the displacement of the release pedal 105 exceeding the certain range and elastically deforms in response to the displacement of the pressing member 110 is used. It is assumed to be configured.
  • the pressing member 110 is fixed to a cylinder 105 b that rotates integrally with the release pedal 105.
  • the elastic member 111 is, for example, a rubber material, and is fixed to the support member 112, which is rotatably attached to the cylinder 105b, by screwing.
  • the pressing member 110 and the elastic member 111 are arranged to face each other and the release pedal 105 is at the original position, that is, the release pedal 105 is not depressed. In some cases, a space is provided between the pressing member 110 and the elastic member 111.
  • the stretcher 1 of the present embodiment has an adjusting means for adjusting the positional relationship between the pressing member 110 and the elastic member 111.
  • This adjusting means is, for example, an adjusting screw 113 attached to the bottom of the jack case 97 and having a distal end portion in contact with a supporting member supporting the elastic member 111.
  • the tip of the adjusting screw 113 rotates the supporting member 112 around the cylinder 105b. Therefore, by rotating the adjusting screw 113 to adjust the amount of the adjusting screw 113 protruding from the inner surface of the bottom of the jack case 97, the elastic member 111 and the pressing member 110 are formed. Can be adjusted to the desired one.
  • the operation of depressing the release pedal 105 causes the pressing member 110 to rotate, and the release pedal 105 to release.
  • the rotation amount exceeds a certain amount
  • the pressing member 110 comes into contact with the elastic member 111, and thereafter, the pressing member 110 rotates while elastically deforming the elastic member 111.
  • the force required to rotate the release pedal 105 is such that the tension coil spring 109 is stretched.
  • a force for further elastically deforming the elastic member 111 is required.
  • the release pedal 105 can be depressed with a small force and the release screw 94b can be slightly loosened. After the contact of the elastic member 111 with the elastic member 111, the release screw 94b can be largely loosened by depressing the release pedal 105 with a stronger force.
  • the release pedal 105 when the release pedal 105 is depressed with a light force, the piston part 91 b is connected to the cylinder part 91 a as in the case where a person is on the stretcher body 2.
  • the piston part 91b is contracted smoothly. The weight of 2 allows the 9 lb piston section to shrink smoothly.
  • the stretcher 1 configured as described above, when the operator steps on one of the left and right elevating pedals 101, the piston part 91b extends with respect to the cylinder part 91a. By rotating the four-section parallel link mechanism 4, the stretcher body 2 can be raised in parallel with the bogie 3. On the other hand, by depressing either the left or right release pedal 105, the piston portion 91b contracts, and the stretcher body 2 can be lowered in parallel with the bogie 3. According to the stretcher 1, the operator does not need to bend down to the lower portion of the stretcher 1 and can perform the extension operation of the extension mechanism 5 while standing.
  • the lifting pedal 101 and the release pedal 105 are arranged on the left and right sides of the stretcher 1, there is no need for the operator to turn around to the side where the pedal is located. Lifting operation can be performed. Further, the brake mechanism allows the piston portion 91b to contract at an appropriate speed according to the situation, depending on the strength of the depression force on the release pedal 105.
  • the elevating link 102 of the elevating pedal mechanism is not limited to the one described above.
  • the link shown in FIGS. 69 and 70 may be used.
  • the elevating link 102 is rotatably connected to the first elevating link 102 a 'that rotates integrally with the elevating pedal 101 and the first elevating link 102 a.
  • the second lifting link 102 b ′ is moved by the rotation of the, and the third lifting link 102 c ′ is rotated by the movement to apply a pressing force to the pump piston 93 b of the oil pump 93. Since the configuration of the release pedal mechanism other than the lifting link 102 can be the same as that described above, the release pedal mechanism and the like are omitted in Fig. 65 and Fig. 66.
  • the rotating shaft 101a of the lifting pedal 101 is penetrated by the cylindrical body 101b.
  • the force is fixed by screwing so as to rotate integrally with the rotating shaft 1 O la.
  • the first link 102a is fixed to the cylinder 101b.
  • two support shafts 100p are hung between the front wall and the rear wall of the jack case 97, and two support plates 100g are fixed to these support shafts 100p. ing.
  • the third lifting link 102 c ′ is attached between the two support plates 100 g by a rotating shaft 10 Oh which is parallel to the rotating shaft 101 a of the lifting pedal 101.
  • the portion of the third elevating link 102 c ′ in contact with the pump piston 93 b is substantially circular, so that the members can be smoothly contacted.
  • One end of the second link 102b ' is connected to the first link 102a' by the rotation shaft 100r, and the other end is connected to the third link 102c 'by the rotation shaft 100s.
  • the rotating shaft 101a is disposed closer to the part where the lifting / lowering pedal 101 is depressed than the oil pump 93 which is disposed substantially at the center of the jack case 97, and the rotating shaft 10 Oh is connected to the rotating shaft 101a.
  • the rotary shaft 100 s is disposed so as to sandwich the oil pump 93, the rotary shaft 100 s is disposed between the rotary shaft 100 h and the oil pump 93, and the third link 102 c ′ for raising and lowering is provided with a pump piston 9 3 b on the lower surface thereof.
  • the third link 102 c ′ for raising and lowering is provided with a pump piston 9 3 b on the lower surface thereof.
  • the lifting pedals 101 may be arranged on both left and right sides of the stretcher 1, and the left and right lifting pedals 101 may be connected to different lifting links 102, respectively.
  • the two elevating links 102 are basically symmetrically arranged, and as for the second elevating link 102 b 'and the third elevating link 102c', which are the overlapping portions, as shown in Fig. 70, for example. , Not before and after And arrange them.
  • the elevating pedal mechanism is provided with a means for returning the depressed elevating pedal 101 to the original position.
  • a spring hook 101c is fixed to the cylinder 101b that rotates integrally with the lifting pedal 101, and the above-mentioned spring hook 101c is fixed between the left and right spring hooks 101c.
  • a tension coil spring 103 is attached as a return means.
  • the elevating link 102 of this elevating pedal mechanism the elevating third link 102 c 'for pushing the pump piston 93 b and the elevating hoist rotating integrally with the elevating pedal 101 Since the second lifting link 102b 'is interposed between the first link 102a' and the rotating shaft 101 of the lifting pedal 101 from the position where the oil pump 93 is located, Can be placed at remote locations. In addition, even if the lifting pedal 101 is positioned horizontally instead of being bent, the lifting pedal 101 can be positioned horizontally even if the lifting pedal 101 is positioned horizontally. Can be configured so as not to contact with.
  • each member constituting the above-described strainer 1 can be appropriately selected from metal materials or synthetic resins having required or desirable mechanical strength, light weight, weather resistance, workability, and the like. It is. For example, when the frame 20 is made of a light alloy, the weight can be reduced while having the necessary strength of the strainer 1.
  • the above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention.
  • the configuration itself of the stretcher main body 2 is not necessarily limited to the example of the above-described embodiment, and the present invention may be applied to a known or new stretcher main body 2.
  • the stretcher body 2 is attached to the third support shaft 47 and the fourth support shaft 48.
  • the present invention is not necessarily limited to this mode. Any structure may be used as long as the mechanism body 4 is supported by the parallel moving portion of the mechanism 4. Thereby, the stretcher main body 2 can be moved up and down in parallel with the carriage 3.
  • the number of the extension / contraction mechanisms 5 is not limited to one, but may be plural. Further, in this case, a plurality of the actuating mechanism 54 described in the first embodiment may be connected to transmit the rotation of one actuating mechanism 54 to the other actuating mechanism 54.
  • a plurality of the actuating mechanism 54 described in the first embodiment may be connected to transmit the rotation of one actuating mechanism 54 to the other actuating mechanism 54.
  • two telescopic mechanisms 5 are provided
  • two second bevel gears 54 2 are provided on the drive-side actuating mechanism 54
  • the second bevel gears of the drive-side and driven-side actuating mechanisms 54 are provided.
  • the second bevel gears 542 are arranged so that they face each other, and the facing second bevel gears 542 are connected by, for example, a connection shaft.
  • the extension mechanism 5 is not limited to the mechanism that expands and contracts using the force of the operator, and is electrically driven. It may expand and contract.
  • the present invention is not limited to manually rotating the second bell gear 542 using the handle portion 59, and the motor 114 is attached to the base 51 as shown in FIG.
  • the second bevel gear 5 4 2 may be rotated.
  • a switch for operating the motor 114 is provided, and the expansion and contraction mechanism 5 is electrically extended and contracted by the switch operation.
  • the screw rod 531 may be directly rotated by the motor 114 without passing through the bevel gear.
  • a reduction gear train that reduces the rotation of the motor 114 and transmits the rotation to the screw rod 531 may be provided between the motor 114 and the screw rod 531.
  • an electric pump may be used as the oil pump.
  • the rotation of the motor 114 or the handle portion 59 is not necessarily limited to the one that transmits the rotation of the motor 114 or the handle portion 519 to the threaded rod 531 via the beveling gears 541, 542.
  • the rotation of 59 may be transmitted to the screw rod 531 or the slider 532 via a universal joint ⁇ flexible joint or belt conduction, wire conduction, chain conduction, or the like.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

Cette invention se rapporte à une civière comprenant un mécanisme servant à soulever un corps de civière transformable de couchette en fauteuil et vice versa, comprenant le corps de civière (2) transformable en fauteuil roulant par pliage, un chariot (3) servant de support au corps de civière (2), un mécanisme de tringlerie à parallélisme quadrique (4) comportant quatre pivots rotatifs formant un parallélogramme et permettant à deux des pivots rotatifs d'être fixés au chariot (3), et soutenant le corps de civière (2) par sa partie se déplaçant parallèlement au chariot (3), et un mécanisme extensible (5) disposé dans une position telle que la rotation du mécanisme à tringlerie à parallélisme quadrique (4) peut être limitée et le mécanisme tringlerie à parallélisme quadrique (4) peut être mis en rotation par extension et retrait.
PCT/JP2003/011494 2002-09-09 2003-09-09 Civiere transformable en fauteuil roulant WO2004021953A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004534197A JP4404771B2 (ja) 2002-09-09 2003-09-09 車椅子に形態変更可能なストレッチャ
AU2003262019A AU2003262019A1 (en) 2002-09-09 2003-09-09 Stretcher shape-changeable to wheelchair

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002263202 2002-09-09
JP2002-263202 2002-09-09

Publications (1)

Publication Number Publication Date
WO2004021953A1 true WO2004021953A1 (fr) 2004-03-18

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AU (1) AU2003262019A1 (fr)
WO (1) WO2004021953A1 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2009010600A1 (fr) 2007-07-19 2009-01-22 Fundacion Tekniker Chaise roulante
KR100967989B1 (ko) * 2008-01-16 2010-07-07 연세대학교 산학협력단 구조변경이 가능한 전환형 휠체어
CN105564287A (zh) * 2015-12-29 2016-05-11 芜湖华强文化科技产业有限公司 一种观光旅游车
TWI584798B (zh) * 2015-12-03 2017-06-01 國立虎尾科技大學 Action Auxiliary Modular Conversion Mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7178840B2 (ja) * 2018-09-13 2022-11-28 タカノ株式会社 座部と背部との連動機構、及びストレッチャ

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JPH0438951A (ja) * 1990-06-05 1992-02-10 Nisshin Iryoki Kk 車椅子
JPH0563532U (ja) * 1992-02-07 1993-08-24 株式会社三協精機製作所 車いす
JPH10108878A (ja) * 1996-10-08 1998-04-28 Yoshiyuki Sakai ペアリフター総合介護システム
JP2001204768A (ja) * 2000-01-26 2001-07-31 Koshioka Sangyo Kk 車椅子
US6381781B1 (en) * 1999-08-24 2002-05-07 Ferno-Washington, Inc. Combination ambulance cot and chair

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JPH08140963A (ja) * 1994-09-22 1996-06-04 Shimadzu Corp 寝台装置
JP2001231670A (ja) * 2000-02-22 2001-08-28 Nikken Kogyo Kk 平行可変陳列台

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Publication number Priority date Publication date Assignee Title
JPH0438951A (ja) * 1990-06-05 1992-02-10 Nisshin Iryoki Kk 車椅子
JPH0563532U (ja) * 1992-02-07 1993-08-24 株式会社三協精機製作所 車いす
JPH10108878A (ja) * 1996-10-08 1998-04-28 Yoshiyuki Sakai ペアリフター総合介護システム
US6381781B1 (en) * 1999-08-24 2002-05-07 Ferno-Washington, Inc. Combination ambulance cot and chair
JP2001204768A (ja) * 2000-01-26 2001-07-31 Koshioka Sangyo Kk 車椅子

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009010600A1 (fr) 2007-07-19 2009-01-22 Fundacion Tekniker Chaise roulante
KR100967989B1 (ko) * 2008-01-16 2010-07-07 연세대학교 산학협력단 구조변경이 가능한 전환형 휠체어
TWI584798B (zh) * 2015-12-03 2017-06-01 國立虎尾科技大學 Action Auxiliary Modular Conversion Mechanism
CN105564287A (zh) * 2015-12-29 2016-05-11 芜湖华强文化科技产业有限公司 一种观光旅游车

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AU2003262019A1 (en) 2004-03-29
JP4404771B2 (ja) 2010-01-27

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