JP3139367U - Reclining seat and reclining seat type wheelchair - Google Patents

Abstract

A reclining seat that prevents the seat frame from being displaced due to the rotation of the back frame is obtained by rotating the pivot axis of the back frame about a virtual fulcrum located at the waist of the seated person.
A mounting frame 6 that supports a seat frame 7 is provided with a first fulcrum P1 and a second fulcrum P2 positioned behind and above the first fulcrum P8, and a sixth fulcrum P6 and a rear rearward of the back frame 8. And a seventh fulcrum P7 located above, and the first linking point P1 and the second fulcrum P2 are connected to the first linking point L1 and the second linking point L2 so as to be rotatable rearward, and the sixth supporting point P6 and The third link arm L3 and the fourth link arm L4 are rotatably connected to the seventh fulcrum P7, and the first link arm L1 and the second link arm L2 are connected to the rear portion in the front-rear direction and the second link arm L2. A third fulcrum P3 and a fourth fulcrum P4, which form a substantially parallel link fulcrum sharing the first fulcrum P1 and the second fulcrum P2, are provided.
[Selection] Figure 5

Description

  The present invention relates to a reclining seat whose backrest rotates relative to a seat, and a reclining seat type wheelchair equipped with the reclining seat.

  Conventional reclining seats have a connecting pin provided at the rear end of a seat frame to which a seat is attached, and a back frame to which a backrest is attached is connected via the connecting pin so as to be rotatable in the front-rear direction. . In this case, the connecting pin is greatly separated downward with respect to the waist of the seated person, and when the back frame is rotated in the front-rear direction, the back support is greatly displaced with respect to the back of the seated person. For this reason, the seated person needs to adjust the position of the back relative to the backrest by moving the back frame away from the backrest. In particular, in patients who are difficult to adjust the back by themselves, the caregiver has to perform this adjustment, which increases the burden.

  In addition, since the conventional frame is configured such that the back frame is rotated rearward while the horizontal angle of the seat frame is kept constant, if the back frame is tilted backward, Due to the forward force due to its own weight, the occupant easily slips forward on the seat, and the seating in the inclined state becomes unstable.

In order to prevent the backrest of the seat occupant from shifting when the back frame is rotated, brackets projecting upward are provided on both sides of the seat frame, and the waist of the seat occupant is provided at the upper end of the bracket. Corresponding connecting pins are provided, and connecting means is provided on the connecting pins so that the back frame can be rotated in the front-rear direction. However, this is not applicable to the patient because the bracket becomes an obstacle when the patient gets on and off the reclining seat.
JP 2004-209220 A

  The present invention provides a back frame by positioning the pivot axis of the back frame at the waist of the seated person without protruding the connecting pin that pivotably connects the seat frame and the back frame from the seat frame. An object of the present invention is to obtain a reclining seat and a reclining seat type wheelchair in which a shift from a seated person due to the rotation of the seat is prevented.

  The present invention is configured as follows to achieve the above object. That is, the device according to claim 1 is provided with a first fulcrum and a second fulcrum located rearward and upward with respect to the first fulcrum on the mounting frame that supports the seat frame, and a sixth fulcrum and a lower part of the back frame. A seventh fulcrum located rearward and upward with respect to the sixth fulcrum; and a first link arm and a second link arm connected to the first fulcrum and the second fulcrum so as to be rotatable rearwardly; A third link arm and a fourth link arm are pivotably connected downward to the sixth fulcrum and the seventh fulcrum, and are connected to the rear portion of the first link arm and the front-rear direction intermediate portion of the second link arm. A third fulcrum and a fourth fulcrum that form a substantially parallel link fulcrum sharing the first fulcrum and the second fulcrum are provided, and the third fulcrum and the fourth fulcrum can be rotated to the lower part of the third link arm. Connected to the rear end of the second link arm, A reclining seat is provided in which a fifth fulcrum that forms a substantially parallel link fulcrum sharing the four fulcrum, the sixth fulcrum, and the seventh fulcrum is provided, and the lower part of the fourth link arm is rotatably connected to the fifth fulcrum. Is.

  According to a second aspect of the present invention, the rear portion of the seat frame is rotatably connected to the second fulcrum, and an eighth fulcrum is provided on the front side of the first fulcrum, which is an attachment frame. A fifth link arm is pivotally connected, a ninth fulcrum is provided on the front side of the seat frame and the second fulcrum, and the sixth link arm can be pivoted downward on the ninth fulcrum. In the horizontal state of the seat frame, the fifth link arm and the sixth link arm are pivoted rearward so as to be pivotably coupled to each other by the tenth fulcrum, and at the lower part of the second link arm, An eleventh fulcrum serving as a fulcrum of a quadrilateral link sharing the second fulcrum, ninth fulcrum, and tenth fulcrum is provided, and a seventh link arm is rotatably connected to the eleventh fulcrum and the tenth fulcrum. This is a reclining seat.

  According to a third aspect of the present invention, a twelfth fulcrum is provided at an intermediate portion in the vertical direction of the back frame, and an armrest is extended forwardly to the twelfth fulcrum so as to be pivotable up and down. A thirteenth fulcrum on the rear side, a third link arm and a fourteenth fulcrum between the fourth fulcrum and the sixth fulcrum, and an eighth link arm between the fourteenth fulcrum and the thirteenth fulcrum Is a reclining seat that is connected so as to be rotatable.

  According to a fourth aspect of the present invention, the reclining seat according to the first and second aspects of the present invention is provided, a lower frame that is long in the front-rear direction is disposed below the mounting frame, and the front and rear wheels are disposed at the front and rear portions of the lower frame. The rear wheel is provided on the lower frame through the slide frame so as to be movable back and forth, and the fifteenth fulcrum and the sixteenth fulcrum P at the same height as the lower frame are spaced apart in the front-rear direction. The L-shaped ninth link arm and the tenth link arm having the same shape are connected to the fifteenth fulcrum and the sixteenth fulcrum in a downward and forward-backward direction so that their bent portions are rotatable. The front end of the ninth link arm is pivotally connected to an eighth fulcrum provided on the front side of the mounting frame, and the front end of the tenth link arm is provided on the rear side of the mounting frame. The rear ends of the ninth link arm and the tenth link arm are rotatably connected to the fulcrum via the eighteenth fulcrum and the nineteenth fulcrum by the eleventh link arm, and are connected to the lower frame. This is a reclining seat type wheelchair provided with an elevator for moving the mounting frame up and down.

  According to a fifth aspect of the present invention, the fifth link arm protrudes downward from the eighth fulcrum, and the twelfth of the length equal to the front side of the ninth link arm through the twentieth fulcrum at the protruding end. A link arm is rotatably connected, the twelfth link arm is rotated rearward to extend parallel to the front side of the ninth link arm, and the rear end of the twelfth link arm is connected to the twenty-first link. A reclining seat type wheelchair is rotatably connected to a slide frame via a fulcrum.

  According to a sixth aspect of the present invention, the rear portion of the seat frame is rotatably connected to the second fulcrum, and an eighth fulcrum is provided on the front side of the first fulcrum, which is an attachment frame. A fifth link arm is pivotally connected, a ninth fulcrum is provided on the front side of the seat frame and the second fulcrum, and the sixth link arm can be pivoted upward at the ninth fulcrum. In the horizontal state of the seat frame, the fifth link arm and the sixth link arm are pivoted rearward so as to be pivotably coupled to each other by the tenth fulcrum, and at the lower part of the second link arm, An eleventh fulcrum serving as a fulcrum of a quadrilateral link sharing the second fulcrum, ninth fulcrum, and tenth fulcrum is provided, and a seventh link arm is rotatably connected to the eleventh fulcrum and the tenth fulcrum. Recliner seat type wheelchair A.

  According to a seventh aspect of the present invention, a twelfth fulcrum is provided at an intermediate portion in the vertical direction of the back frame, and an armrest is extended forwardly to the twelfth fulcrum so as to be pivotable up and down. A thirteenth fulcrum on the rear side, a third link arm and a fourteenth fulcrum between the fourth fulcrum and the sixth fulcrum, and an eighth link arm between the fourteenth fulcrum and the thirteenth fulcrum Is a reclining seat type wheelchair that is connected to each other in a rotatable manner.

  According to an eighth aspect of the present invention, the leg frame is pivotally connected to the front end portion of the seat frame via the 22nd fulcrum, and the leg frame is pivoted downward so that the seventh link arm is 10th fulcrum projecting forward, 23rd fulcrum is provided at the projecting end, the 13th link arm is pivotally connected to the 23rd fulcrum, and the 13th link arm is rotated forward, The front end of the leg frame is pivotally connected to a 24th fulcrum provided at an intermediate portion in the vertical direction, and a footrest is pivotally connected to the lower end of the leg frame via a 25th fulcrum. And a 14th link arm parallel to a line connecting the 22nd fulcrum and the 25th fulcrum is provided behind the leg frame, and the upper end of the 14th link arm is The lower end of the fourteenth link arm is pivotally connected to the rear portion of the footrest via the twenty-seventh fulcrum, and is pivotally connected to the front portion of the seat frame via six fulcrums. The reclining seat type wheelchair is formed so that the distance from the 27th fulcrum is equal to the distance between the 22nd fulcrum and the 25th fulcrum.

  In the device according to claim 1, when the second link arm is rotated downward about the second fulcrum, the third link arm is rotated downward via the third fulcrum and the fourth fulcrum. As a result, the seat frame 7 is rotated backward by the sixth fulcrum connected to the third link arm and the seventh fulcrum connected to the fourth link arm via the second link arm, while moving backward. It is rotated.

  That is, when the second link arm is rotated downward about the second fulcrum, the first fulcrum to the fourth fulcrum are substantially parallel link fulcrums, so the sixth fulcrum is smaller than the mounting frame. It is moved downward and downward by a circular arc motion of the radius. On the other hand, the seventh fulcrum is moved rearward and downward by an arc motion having a large radius with respect to the mounting frame via the second link arm and the fourth link arm. Further, since the fourth fulcrum to the seventh fulcrum are substantially parallel link fulcrums, the back frame is centered on a virtual fulcrum above the rear part of the seat frame sharing the second fulcrum, the fourth fulcrum, and the sixth fulcrum. As shown in FIG.

  Therefore, the device according to the first aspect of the present invention is to select the length of each of the first, second, and third link arms and the respective fulcrums, and arrange them on the outside (rear) of the seat frame and the back frame. Can be raised and lowered around the waist of the seated person, and deviation from the seated person due to rotation of the back frame can be prevented. In addition, there is no upward projection on the seat frame, and the patient (sitting person) can be easily transferred.

  In the device according to claim 2, when the second link arm is rotated downward, the tenth fulcrum is moved forward via the eleventh fulcrum and the seventh link arm, and the fifth link arm is moved to the eighth fulcrum. The sixth link arm rotates around the ninth fulcrum as the center. Since the eighth fulcrum is positioned (fixed) on the mounting frame, the seat frame is centered on the second fulcrum from the horizontal state while the fifth link arm and the sixth link arm are in a straight line from the backward bending. While the fifth link arm and the sixth link arm are bent from the straight line to the forward bending, the seat frame is rotated back around the second fulcrum, that is, horizontally.

  Therefore, in the invention according to claim 2, when the back frame is tilted backward, the seat frame tilts upward, the seated person does not slide forward on the seat, and the back frame stands up or rotates horizontally. When this is done, the seat frame becomes horizontal and the seated person can wake up stably on the reclining seat.

  According to a third aspect of the present invention, when the back frame is rotated backward, the eighth link arm reduces the lowering amount of the thirteenth fulcrum with respect to the twelfth fulcrum by a predetermined ratio, and the armrest is always kept substantially horizontal. Will do. Accordingly, when the back frame is rotated horizontally, the seat frame, the back frame, and the armrest are in a horizontal plane shape, and the patient (sitting person) can be easily transferred.

  In the device according to claim 4, when the mounting frame is lifted from the lower frame by the elevator, the front piece of the ninth link arm and the fifth link arm is connected to the fifteenth fulcrum and the fifteenth fulcrum via the eighth fulcrum and the seventeenth fulcrum. While rotating around the 16 fulcrums, the rear pieces of the ninth link arm and the fifth link arm are rotated forward. In this case, since the 15th fulcrum, the 16th fulcrum, the 18th fulcrum, and the 19th fulcrum constitute a substantially parallel link fulcrum, the 8th fulcrum and the 17th fulcrum are equal to the lower frame in the vertical direction. The ascent, and therefore the mounting frame, will rise while maintaining level. For this reason, the reclining seat is moved up and down while maintaining the adjusted posture, i.e., the chair shape, the backward tilt, or the horizontal posture, and the patient is moved between the reclining seat type wheelchair and the bed, stretcher, or automobile. In addition to the safe transfer between patients, the patient can move safely in and out of the hospital, walk, and the like.

  According to a fifth aspect of the present invention, when the back frame is inclined rearward and the tenth fulcrum is moved forward via the seventh link arm, the fifth link arm rotates about the eighth fulcrum, and the lower end. The 20th fulcrum of the part is moved rearward, and the rear wheel is moved rearward with respect to the front wheel via the twelfth link arm, the 21st fulcrum, and the slide frame. As a result, the rear wheel stably supports the rearward movement of the center of gravity when the seated person leans backward or lies down.

  Further, when the mounting frame is lifted from the lower frame by the elevator, the 20th fulcrum, the 21st fulcrum, the 8th fulcrum, and the 15th fulcrum constitute a substantially parallel link fulcrum. Elevating in the vertical direction with respect to the lower frame by the same amount as the eighth fulcrum and the 17th fulcrum, the rear wheel is maintained in the movement position due to the movement of the center of gravity of the seated person, and stable support by the front and rear wheels is maintained. Become.

    According to the sixth aspect of the present invention, when the back frame is tilted backward, the seat frame is tilted upward, and when the back frame is erected or rotated horizontally, the seat frame becomes horizontal, Will be able to wake up stably on a reclining seat type wheelchair.

  The invention according to claim 7 is that when the back frame is in a horizontal state, the armrest is also in a horizontal state, and the seat frame, the back frame, and the armrest are in a horizontal plane, and the patient is reclining seat type wheelchair and bed, Transfers between stretchers or cars can be done safely.

  According to the eighth aspect of the present invention, when the back frame is rotated backward, the leg frame is rotated upward about the 22nd fulcrum via the second link arm, the seventh link arm, and the 13th link arm. . Further, when the leg frame is rotated upward, the footrest is raised through the 25th fulcrum.

  In this case, the front and rear fulcrum provided on the seventh link arm, that is, the eleventh fulcrum connected to the lower part of the second link arm and the tenth fulcrum connected to the lower part of the sixth link arm are provided on the front and rear of the seat frame. The front and rear fulcrums, that is, the second fulcrum connected to the upper part of the second link arm and the ninth fulcrum connected to the upper part of the sixth link arm constitute a substantially parallel link fulcrum. The upper and lower fulcrum points of the 14th link arm arranged at the rear, that is, the 26th and 27th fulcrum points, the upper and lower fulcrum points of the leg frame, that is, the 22nd fulcrum point connected to the seat frame, and the footrest to which the footrest is connected. Since the 25 fulcrum and the substantially parallel link fulcrum are constituted, the leg frame is rotated in substantially the same direction in conjunction with the back frame, and the footrest is moved up and down while maintaining a substantially horizontal state. That.

  Therefore, in the device according to claim 8, when the back frame stands up and tilts backward, the footrest receives the foot of the patient (sitting person) and reduces the fatigue of the patient. In addition, when the back frame is in a horizontal state, the seat frame, back frame, leg frame, and footrest become a horizontal surface, and the patient can be placed between a reclining seat type wheelchair and a bed, stretcher, or car. The transfer can be done safely.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view showing a basic posture of a reclining seat type wheelchair according to the present invention, FIG. 2 is a side view showing a rear tilt operation state of the reclining seat type wheelchair according to the present invention, and FIG. 3 is a reclining seat type according to the present invention. 4 is a side view showing the horizontal / lifting operation state of the reclining seat type wheelchair according to the present invention, FIG. 5 is an explanatory frame configuration diagram corresponding to FIG. 1, and FIG. FIG. 7 is an explanatory frame configuration diagram corresponding to FIG. 3, and FIG. 8 is an explanatory frame configuration diagram corresponding to FIG.

  In FIG. 1, A is a reclining seat type wheelchair, a front wheel 4 on the front part (left part in FIG. 1) of the lower frame 1 and a carriage part B having a rear wheel 5 on the rear part (right part in FIG. 1); And a reclining seat C attached to the carriage B so as to be movable up and down.

  The reclining seat C has a seat frame 7, a back frame 8, an armrest 9, a leg frame 10, and a footrest 11, which include cushions for cushioning, that is, a seat 7a, a back support 8a, an arm support 9a, and legs. A receiver 10a and a foot receiver 11a are attached.

  The seat frame 7, the back frame 8, the armrest 9, the leg frame 10, and the footrest 11 are operated in conjunction with each other by a link mechanism. That is, as shown in FIG. 2, when the back frame 8 is tilted backward at an angle of about 45 degrees, the seat frame 7 tilts upward at an angle of 5 degrees to 10 degrees and the front of the seated person (left in FIG. 2). The armrest 9 is held substantially horizontally so that the seated person can place it with the arm portion extended. Further, the leg frame 10 and the footrest 11 are raised by a predetermined amount, and the footrest 11 is held substantially horizontally so as to lift the legs of the seated person.

  As shown in FIG. 3, when the back frame 8 is rotated horizontally toward the rear (rightward in FIG. 3), the seat frame 7, the back frame 8, the armrest 9, the leg frame 10, and the footrest 11. Becomes a horizontal plane so that the occupant (patient) can rest on the reclining seat C. Also, as shown in FIG. 4, the reclining seat C is lifted by the elevator 15 in a state where the reclining sheet C is in a horizontal plane, and can be easily transferred to a patient's bed, stretcher or the like. In FIG. 1, reference numeral 12 denotes a reclining lever attached to the rear side of the back frame 8, and the reclining seat C can be tilted by operating the reclining lever 12. 13 is a traveling handle with a brake lever 14 for a caregiver attached to the rear side of the back frame 8. The caregiver operates and stops the reclining seat type wheelchair A by operating the traveling handle 13 and the brake lever 14. Can be done.

  Next, the frame configuration of the reclining seat type wheelchair A will be described with reference to FIGS. In FIG. 5, B is a trolley part and C is a reclining seat. The carriage portion B is formed of a rectangular lower frame 1 made of a metal pipe such as stainless steel or aluminum, or a square pipe, and a stay 1a is protruded and fixed to the front portion of the lower frame 1 downward. The front wheel 4 is attached to the lower part of 1a. A slide frame 2 is slidably attached to the lower frame 1 via a slider 3 and a rear wheel 5 is attached to the slide frame 2.

  Front struts 1b and rear struts 1c are erected and fixed to an intermediate portion and a rear end portion of the lower frame 1 in the front-rear direction, and fifteenth fulcrum pins P15 (hereinafter referred to as upper fulcrum pins P15) are respectively attached to the upper ends of the front struts 1b and the rear struts 1c. The 9th link arm L9 and the 10th link arm L10 are rotatably connected via a 16th fulcrum P16. The ninth and tenth link arms L9, L10 are both bent into an L shape having the same shape, and these are bent downward and the long piece is directed in the front direction, and each bent portion is the 15th fulcrum of the front column 1b. P15 and the 16th fulcrum P16 of the rear column 1c are rotatably connected, and the lower ends of the short pieces of the ninth and tenth link arms L9 and L10 are connected to the eighteenth fulcrum P18 and the eighteenth by the eleventh link arm L11. It connects so that rotation is possible via 19 fulcrum P19. Thereby, the 15th fulcrum P15, the 16th fulcrum P16, the 18th fulcrum P18, and the 19th fulcrum P19 constitute a substantially parallel link fulcrum.

  The mounting frame 6 is arranged above the lower frame 1 and its front end and rear end are connected to the long side of the ninth and tenth link arms L9 and L10 via the eighth fulcrum P8 and the seventeenth fulcrum P17. The front end is pivotally connected. Further, an elevator 15 made of a hydraulic cylinder is attached to the front portion of the lower frame 1, and the operating rod of the elevator 15 is connected to the long side (front side) of the ninth link arm L9. Thus, when the elevator 15 is expanded and contracted to swing the ninth and tenth link arms L9 and L10 in the vertical direction, the mounting frame 6 is leveled via the eighth fulcrum P8 and the seventeenth fulcrum P17. In the held state, the lower frame 1 is moved up and down in the vertical direction.

  A reclining seat C is attached to the attachment frame 6. The reclining seat C is as follows. That is, the first support column and the second support column longer than the first support column are erected and fixed at an intermediate portion in the front-rear direction of the mounting frame 6 with a space in the front-rear direction, and the first fulcrum P1 and the first fulcrum P1 A second fulcrum P2 is provided. Further, the lower end portion of the back frame 8 is bent forward to form a lowering stop piece 8b of the back support 8a, the sixth fulcrum P6 is provided on the lower stop piece 8b, and the bracket 8c is rearwardly provided on the lower back of the back frame 8. A seventh fulcrum P7 is provided on the bracket 8c.

  A first link arm L1 is connected to the first fulcrum P1, a triangular second link arm L2 is connected to the second fulcrum P2 so as to be pivotable rearward, and a triangular first link arm L2 is connected to the sixth fulcrum P6. The three link arms L3 are connected to the seventh fulcrum P7 so that the fourth link arms L4 can turn downward. Further, a third fulcrum P3 and a fourth fulcrum P4 are provided at the rear part of the first link arm L1 and the intermediate part in the front-rear direction of the second link arm L2. The third fulcrum P3 and the fourth fulcrum P4 are on a line parallel to a line connecting the first fulcrum P1 and the second fulcrum P2, and at equal intervals between the first fulcrum P1 and the second fulcrum P2. To do. Thus, a first substantially parallel link fulcrum is formed by the first fulcrum P1, the second fulcrum P2, the third fulcrum P3, and the fourth fulcrum P4.

  Further, the third fulcrum P3 and the fourth fulcrum P4 are rotatably connected to two lower portions of the third link arm L3, and a fifth fulcrum P5 is provided at the rear end of the second link arm L2. The fifth fulcrum P5 is located on a line passing through the fourth fulcrum P4 parallel to the line connecting the sixth fulcrum P6 and the seventh fulcrum P7 and at equal intervals between the sixth fulcrum P6 and the seventh fulcrum P7. To do. As a result, a second substantially parallel link fulcrum is formed by the fourth fulcrum P4, the fifth fulcrum P5, the sixth fulcrum P6, and the seventh fulcrum P7.

  As a result, when the second link arm L2 is pivoted downward about the second fulcrum P2, the third link arm L3 is pivoted rearward and downward via the third fulcrum P3 and the fourth fulcrum P4. While the frame 7 is rotated downward by a sixth fulcrum P6 connected to the third link arm L3 and a seventh fulcrum P7 connected to the fourth link arm L4 via the second link arm L2, Is rotated.

  In this case, when the second link arm L2 is rotated downward about the second fulcrum P2, the first to fourth fulcrums P1, P2, P3, P4 become the first substantially parallel link fulcrum. In addition, since the fourth fulcrum to the seventh fulcrum P4, P5, P6, and P7 are the second substantially parallel link fulcrum sharing a part of the first substantially parallel link fulcrum, the back frame 8 is rotated downward while tilting rearward about a virtual fulcrum P30 above the rear part of the seat frame 7 sharing the second fulcrum P2, the fourth fulcrum P4, and the sixth fulcrum P6.

  Accordingly, by selecting the lengths of the first, second, and third link arms L1, L2, and L3 and the respective fulcrums, these are arranged on the outside (rear) of the seat frame 7 and the back frame 8, while The frame 8 can be tilted up and down around the seated person's waist, and displacement from the seated person due to rotation of the back frame can be prevented. In addition, there is no upward projection on the seat frame 7, and the patient (sitting person) can be easily transferred.

  An eighth fulcrum P8 is provided at the front end of the mounting frame 6, and a fifth link arm L5 is rotatably connected to the eighth fulcrum P8 so as to be the seat frame 7 and the second fulcrum P2. A ninth fulcrum P9 is provided further forward than the sixth fulcrum P9, and the sixth link arm L6 is pivotably connected to the ninth fulcrum P9. Then, in the horizontal state of the seat frame 7, the fifth link arm L5 and the sixth link arm L6 are rotated backward, and both are connected to each other by a tenth fulcrum P10.

  Further, a seventh link arm L7 is arranged below the seat frame 7 substantially in parallel with the seat frame 7, the front portion of the seventh link arm L7 is at the tenth fulcrum P10, and the rear end thereof is at the second link arm L2. Each is pivotably connected to an eleventh fulcrum P11 provided in the lower part. The eleventh fulcrum P11 is located on the intersection line of the second fulcrum P2 that is substantially parallel to the sixth link arm L6 and at substantially equal intervals with the ninth fulcrum P9 and the tenth fulcrum P10. Let P2, the ninth fulcrum P9, the tenth fulcrum P10, and the eleventh fulcrum P11 be the third substantially parallel link fulcrum.

  Accordingly, when the second link arm L2 is rotated downward, the tenth fulcrum P10 is moved forward via the eleventh fulcrum P11 and the seventh link arm L7, and the fifth link arm L5 is moved to the eighth fulcrum. The sixth link arm L6 is pivoted forward around the ninth fulcrum P9, with P8 as the center. Since the eighth fulcrum P8 is positioned (fixed) on the attachment frame 6, the seat frame 7 has the second fulcrum P2 while the fifth link arm L5 and the sixth link arm L6 are in a straight line from the backward bending. The seat frame 7 is pivoted downward about the second fulcrum P2 while the fifth link arm L5 and the sixth link arm L6 are bent from the straight line to the forward bend as the center is turned upward from the horizontal state (FIG. 6). That is, it is returned and rotated in the horizontal direction (FIG. 7).

  In this example, as shown in FIG. 6, until the back frame 8 is inclined about 45 degrees toward the rear, the seat frame 7 is gradually inclined upward (up to 12 degrees), and as shown in FIG. When the rear inclination angle of the back frame 8 exceeds about 45 degrees, the seat frame 7 gradually returns and rotates in the horizontal direction, and when the back frame 8 becomes horizontal, the seat frame 7 also becomes horizontal. Thereby, when the seated person tilts backward, the seat 7a does not slip forward, and when the back frame 8 is rotated horizontally, the seat frame 7 becomes horizontal and the seated person reclines. You can sleep on C (nap).

  A twelfth fulcrum P12 is provided at an intermediate portion in the vertical direction of the back frame 8, and the armrest 9 is extended forwardly and connected to the twelfth fulcrum P12 so as to be pivotable up and down. A thirteenth fulcrum P13 is provided on the rear side, and the eighth link arm L8 is rotatably connected to the thirteenth fulcrum P13. The lower end of the eighth link arm L8 is connected to the fourth fulcrum P4 of the third link arm L3. It connects to the 14th fulcrum P14 provided between 6 fulcrum P6 so that rotation is possible.

  Thus, when the back frame 8 is rotated rearward, the eighth link arm L8 decreases the amount of descent of the thirteenth fulcrum P13 with respect to the twelfth fulcrum P12 by a predetermined ratio, so that the armrest 9 is always in a substantially horizontal state. As shown in FIG. 7, when the back frame 8 is rotated horizontally, the seat frame 7, the back frame 8 and the armrest 9 are formed in a horizontal plane so that the patient (seeder) can move. Easy replacement.

  The leg frame 10 is rotatably connected to the front end portion of the seat frame 7 via a 22nd fulcrum P22, and the leg frame 10 is rotated downward to connect the seventh link arm L7 to the tenth position. While projecting forward from the fulcrum P10, a 23rd fulcrum P23 is provided at the projecting end, and the 13th link arm L13 is rotatably connected to the 23rd fulcrum P23, and the 13th link arm L13 is rotated forward. The front end of the leg frame 10 is pivotably connected to a 24th fulcrum P24 provided at the middle in the vertical direction.

  The footrest 11 is rotatably connected to the lower end portion of the leg frame 10 via a 25th fulcrum P25, and the footrest 11 is rotated forward, and the rear end portion of the footrest 11 is connected to the 25th fulcrum. A twenty-seventh fulcrum P27 is provided below and behind P25. A fourteenth link arm L14 parallel to a line connecting the twenty-second support point P22 and the twenty-fifth support point P25 is disposed behind the leg frame 10, and the lower end of the fourteenth link arm L14 is connected to the twenty-seventh support point P27. In addition, the upper end is connected to the front portion of the seat frame 7 through the 26th fulcrum P26 so as to be rotatable. The distance between the 26th fulcrum P26 and the 27th fulcrum P27 is equal to the distance between the 22nd fulcrum P22 and the 25th fulcrum P25, and thereby the 22nd fulcrum P22, the 25th fulcrum P25, the 26th fulcrum P26, the 27th fulcrum. The fulcrum P27 is the fourth substantially parallel link fulcrum.

  Accordingly, the leg frame 10 and the footrest 11 operate as follows. That is, when the back frame 8 is rotated backward, the leg frame 10 is rotated upward about the 22nd fulcrum P22 via the second link arm L2, the seventh link arm L7, and the 13th link arm L13. . Further, when the leg frame 10 is rotated upward, the footrest 11 is raised through the 25th fulcrum P25.

  In this case, the leg frame 10 has a third substantially parallel link fulcrum, that is, a seventh link arm L7 that is moved back and forth via the second fulcrum P2, the ninth fulcrum P9, the tenth fulcrum P10, and the eleventh fulcrum P11. The leg frame 10 is rotated in substantially the same direction in conjunction with the back frame 8 because it is rotated by the thirteenth link arm L13 connected to the seventh link arm L7. Further, the footrest 11 is rotated via the fourth substantially parallel link fulcrum, that is, the 22nd fulcrum P22, the 25th fulcrum P25, the 26th fulcrum P26, and the 27th fulcrum P27. Therefore, it is held in a substantially horizontal state without being influenced by.

  Therefore, when the back frame 8 stands up and tilts backward, the footrest 11 receives the foot of the patient (sitting person) and reduces the fatigue of the patient as shown in FIGS. . Further, as shown in FIG. 7, when the back frame 8 is in a horizontal state, the seat frame 7, the back frame 8, the leg frame 10, and the footrest 11 are in a horizontal plane, and the elevator 15 is moved in this state. When extended, the reclining seat C is raised in a horizontal state as shown in FIG. 8, and the patient can be safely transferred between the reclining seat type wheelchair A and the bed, stretcher, or automobile. Become.

  In addition, the reclining seat C can move up and down while maintaining a chair-type, rear-tilt, or horizontally adjusted posture, so that the seated person can adjust the vertical position of the viewpoint or the reachable position in any posture. it can.

It is a side view which shows the basic posture of the reclining seat type wheelchair by this invention. It is a side view which shows the back inclination operation state of the reclining seat type wheelchair by this invention. It is a side view which shows the horizontal operation state of the reclining seat type wheelchair by this invention. It is a side view which shows the horizontal and raising operation state of the reclining seat type wheelchair by this invention. FIG. 2 is an explanatory frame configuration diagram corresponding to FIG. 1. FIG. 3 is an explanatory frame configuration diagram corresponding to FIG. 2. FIG. 4 is an explanatory frame configuration diagram corresponding to FIG. 3. FIG. 5 is an explanatory frame configuration diagram corresponding to FIG. 4.

Explanation of symbols

A Reclining seat type wheelchair B Bogie part C Reclining seat 1 Lower frame 2 Slide frame 3 Slider 4 Front wheel 5 Rear wheel 6 Mounting frame 7 Seat frame 7a Seat 8 Back frame 8a Backrest 9 Armrest 9a Arm receiver 10 Leg frame 10a Leg rest 11 Foot frame 11a Footrest 12 Reclining lever 13 Traveling handle 14 Brake lever 15 Elevator P1 to P27 First fulcrum to 27th fulcrum P30 Virtual fulcrum L1 to L14 First link arm to 14th link arm

Claims (8)

  A mounting frame (6) for supporting the seat frame (7) is provided with a first fulcrum (P1) and a second fulcrum (P2) positioned rearward and upward with respect to the first fulcrum (P1), and the back frame (8 ) Is provided with a sixth fulcrum (P6) and a seventh fulcrum (P7) located behind and above the sixth fulcrum (P6), the first fulcrum (P1) and the second fulcrum (P2) The first link arm (L1) and the second link arm (L2) are pivotally connected to the rear, and the third link arm (L3) is connected to the sixth fulcrum (P6) and the seventh fulcrum (P7). ) And the fourth link arm (L4) are pivotably connected downward, and the first link arm (L1) is connected to the rear portion of the first link arm (L1) and the intermediate portion in the front-rear direction of the second link arm (L2). A first parallel link fulcrum that shares the fulcrum (P1) and the second fulcrum (P2). A fulcrum (P3) and a fourth fulcrum (P4) are provided, the third fulcrum (P3) and the fourth fulcrum (P4) are rotatably connected to the lower part of the third link arm (L3), A fifth fulcrum (P5) that forms a substantially parallel link fulcrum sharing the fourth fulcrum, the sixth fulcrum, and the seventh fulcrum is provided at the rear end of the second link arm (L2), and the fifth fulcrum (P5) A reclining seat characterized in that the lower part of the fourth link arm (L4) is pivotally connected to the lower part.   The rear portion of the seat frame (7) is rotatably connected to the second fulcrum (P2), and the eighth fulcrum (P8) is provided on the mounting frame (6) and in front of the first fulcrum (P1). The fifth link arm (L5) is rotatably connected to the eighth fulcrum (P8), and the ninth fulcrum (P9) is the seat frame (7) and further forward than the second fulcrum (P2). ), And the sixth link arm (L6) is pivotably connected downward to the ninth fulcrum (P9). When the seat frame (7) is in a horizontal state, the fifth link arm (L5) and The sixth link arm (L6) is pivoted rearward and both are pivotally connected to each other by a tenth fulcrum (P10). The second fulcrum (P2) is connected to the lower part of the second link arm (L2), The fulcrum of the quadrilateral link sharing the ninth fulcrum (P9) and the tenth fulcrum (P10) The eleventh fulcrum (P11) is provided, and the seventh link arm (L7) is rotatably connected to the eleventh fulcrum (P11) and the tenth fulcrum (P10). Reclining seat.   A twelfth fulcrum (P12) is provided at the middle in the vertical direction of the back frame (8), and an armrest (9) is extended forwardly to the twelfth fulcrum (P12) so as to be pivotable up and down. 9) A thirteenth fulcrum (P13) is provided on the rear side of the twelfth fulcrum (P12), and is a third link arm (L3) between the fourth fulcrum (P4) and the sixth fulcrum (P6). The 14th fulcrum (P14) is provided in this, The 8th link arm (L8) is connected to this 14th fulcrum (P14) and the 13th fulcrum (P13) so that rotation is possible. Reclining seat as described.   The reclining seat according to claim 1 and claim 2 is provided, a lower frame (1) that is long in the front-rear direction is disposed below the mounting frame (6), and front wheels (4) are provided at the front and rear portions of the lower frame (1). ) And a rear wheel (5), and the rear wheel (5) is provided on the lower frame (1) via the slide frame (2) so as to be movable back and forth, and has the same height as the lower frame (1). The 15th fulcrum (P15) and the 16th fulcrum P (16) of the position are provided at intervals in the front-rear direction, and both the 15th fulcrum (P15) and the 16th fulcrum (P16) have the same shape. The ninth link arm (L9) and the tenth link arm (L10) of the mold are pivotally connected downward and in the front-rear direction, and the front end of the ninth link arm (L9) is connected. On the front side of the mounting frame (6) It is pivotally connected to the eighth fulcrum (P8), and the front end of the tenth link arm (L10) is pivotally connected to the 17th fulcrum (P17) provided on the rear side of the mounting frame (6). Then, the rear ends of the ninth link arm (L9) and the tenth link arm (L10) are rotated by the eleventh link arm (L11) via the eighteenth fulcrum (P18) and the nineteenth fulcrum (P19). A reclining seat type wheelchair characterized in that an elevator (15) is provided that can be connected and the upper frame (1) moves up and down on the lower frame (1).   The fifth link arm (L5) protrudes downward from the eighth fulcrum (P8), and the protruding end portion has a length equal to the front side of the ninth link arm (L9) via the twentieth fulcrum (P20). The twelfth link arm (L12) is rotatably connected, and the twelfth link arm (L12) is rotated backward to extend parallel to the front side of the ninth link arm (L9), The reclining seat type wheelchair according to claim 4, wherein a rear end portion of the twelfth link arm (L12) is rotatably connected to the slide frame (2) via a twenty-first fulcrum (P21).   The rear portion of the seat frame (7) is rotatably connected to the second fulcrum (P2), and the eighth fulcrum (P8) is provided on the mounting frame (6) and in front of the first fulcrum (P1). The fifth link arm (L5) is rotatably connected to the eighth fulcrum (P8), and the ninth fulcrum (P9) is the seat frame (7) and further forward than the second fulcrum (P2). ), The sixth link arm (L6) is pivotably connected to the ninth fulcrum (P9), and the fifth link arm (L5) and The sixth link arm (L6) is pivoted rearward and both are pivotally connected to each other by a tenth fulcrum (P10). The second fulcrum (P2) is connected to the lower part of the second link arm (L2), The fulcrum of the quadrilateral link sharing the ninth fulcrum (P9) and the tenth fulcrum (P10) An eleventh fulcrum (P11) is provided, and a seventh link arm (L7) is rotatably connected to the eleventh fulcrum (P11) and the tenth fulcrum (P10). The reclining seat type wheelchair described.   A twelfth fulcrum (P12) is provided at the middle in the vertical direction of the back frame (8), and an armrest (9) is extended forwardly to the twelfth fulcrum (P12) so as to be pivotable up and down. 9) A thirteenth fulcrum (P13) is provided on the rear side of the twelfth fulcrum (P12), and is a third link arm (L3) between the fourth fulcrum (P4) and the sixth fulcrum (P6). The 14th fulcrum (P14) is provided in this, The 8th link arm (L8) is rotatably connected with this 14th fulcrum (P14) and the 13th fulcrum (P13). Or the reclining seat type wheelchair of 6.   A leg frame (10) is rotatably connected to the front end portion of the seat frame (7) via a 22nd fulcrum (P22), and the leg frame (10) is rotated downward to form a seventh link. The arm (L7) protrudes forward from the tenth fulcrum (P10), and a 23rd fulcrum (P23) is provided at the protruding end, and the thirteenth link arm (L13) is rotated to the 23rd fulcrum (P23). The thirteenth link arm (L13) can be pivoted forward, and the front end of the thirteenth link arm (L13) can be pivoted to a twenty-fourth fulcrum (P24) provided at the middle in the vertical direction of the leg frame (10). The footrest (11) is pivotally coupled to the lower end of the leg frame (10) via a 25th fulcrum (P25), and the footrest (11) is pivoted forward to form a leg. A 14th link arm (L14) parallel to a line connecting the 22nd fulcrum (P22) and the 25th fulcrum (P25) is provided behind the ram (10), and the upper end of the 14th link arm (L14) is The lower end of the fourteenth link arm (L14) is pivotally connected to the front portion of the seat frame (7) through the 26 fulcrum (P26), and the rear portion of the footrest (11) through the 27th fulcrum (P27). The distance between the 26th fulcrum (P26) and the 27th fulcrum (P27) is equal to the distance between the 22nd fulcrum (P22) and the 25th fulcrum (P25). The reclining seat type wheelchair according to any one of claims 4 to 7.

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