JPH10291752A - Raising and lowering device for care - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raising and lowering device for care by which getting on and off a foot rest is facilitated, by decreasing oscillation of a riding tool to stably raise and lower the device, and by smoothly bringing and loading the foot rest of the riding tool in contact with and on the floor surface of a landing, in a raising and lowering device for care having a type in which the riding tool is suspended. SOLUTION: A raising and lowering device for care is provided with a traveling truck to travel along a guide rail extending between a downstairs landing and an upstairs landing, a riding tool 4 suspended downward from the traveling truck, and a raising and lowering control means for controlling the operation of raising and lowering driving devices 55, 57 for vertically raising and lowering the riding tool 4. A raising and lowering frame body 3 is suspended downward from the traveling truck, the riding tool 4 is constituted along the raising and lowering frame body 3 so as to be raised and lowered, loading detecting means 61b, 74 for detecting that a foot rest provided on the riding tool 4 is brought in contact with and loaded on the landing are provided. the raising and lowering control means 55, 57 stop lowering of the riding tool 4 on the basis of the loading detection of the foot rest 6 to the landing by the loading detecting means 61b, 74.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of disposing a horizontal rail portion above a landing below and a landing above a floor, and connecting the two horizontal rail portions with an inclined rail portion interposed therebetween. The configured guide rail, a traveling vehicle traveling along the guide rail, an elevating frame suspended from the traveling vehicle, and a mounting device configured to be able to move up and down along the elevating frame. And a lifting control device for controlling the operation of a lifting drive device for raising and lowering the boarding tool.

[0002]

2. Description of the Related Art Such an elevating device for nursing care is used by an elderly or handicapped person with a physical disability to climb up and down stairs on a boarding device. A guide rail is mounted along the slope of the stairs, and a boarding device provided with a seat for sitting down, a footrest on which feet are placed, and the like is mounted on the guide rail so as to be able to run directly on the guide rail. However, in this type of elevating device, since the mounting device is directly attached to the guide rail along the slope of the stairs, the mounting device cannot be moved up and down with respect to the guide rail. When located on a landing downstairs or on the floor, the footrest will be located above the floor of the landing. If there is a space between the lower surface of the footrest and the floor of the landing, even if the space is small, there is a feeling of anxiety for an elderly person with a physical disability, and there is a problem that it is difficult to get on and off the footrest.

[0003] In addition, a guide rail is disposed above a stair or the like, a string such as a wire is hung down from a traveling cart traveling along the guide rail, and a rider is attached to a lower end of the string, and a string is attached. There is also known a device in which a riding device is vertically moved up and down while winding and rewinding by a winding device provided on a traveling cart side. In this type of lifting device, the footrest of the boarding equipment can be placed in contact with the floor of the landing, but the boarding equipment is hung with a string-like body. There is a risk that the boarding equipment will shake when climbing and descending, and the climbing itself will be unstable, and if you try to place the footrest on the floor of the landing while lowering the boarding equipment in such an unstable state, The placement of the footrest in contact with the floor surface was not smooth, and there was room for improvement in this respect.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a nursing care elevating device of the type in which a vehicle is hung from a traveling vehicle as described above, so that the vehicle can be stably moved up and down with a minimum of shaking. Accordingly, it is an object of the present invention to provide a lift device for nursing care that enables a footrest of a boarding tool to be smoothly placed on a floor of a landing or the like so as to be able to easily get on and off the footrest.

[0005]

In order to achieve this object, according to the first aspect of the present invention, an elevating frame is suspended from a traveling vehicle traveling along a guide rail, and the elevating frame is suspended. Since the boarding device is configured to be able to move up and down along the frame, it is necessary to stably move the boarding device up and down as compared to lifting and lowering the boarding device with a string such as a wire. Can be. And, a mounting detection means for detecting that the footrest provided on the boarding equipment comes into contact with the dance scene and mounts the same, and an elevating control means for controlling the operation of an elevating drive device for raising and lowering the boarding equipment, Based on the detection of the placement of the footrest on the dance scene by the placement detection means, the descent of the boarding device is stopped, so that the footrest is smoothly placed on the landing surface. It is possible to safely get on and off the footrest without worry.

According to the second aspect of the present invention, the landing downstairs is the landing on the first floor, the landing upstairs is the landing on the second floor, and the inclined rail portion is located above the stairs located between the landings. And the horizontal rails located above both landings are connected via the inclined rails. Therefore, the guide rails on which the traveling carts travel are provided with a landing on the first floor and a landing on the second floor. Will be continuously arranged between
It is possible to freely climb up and down the stairs between both landings by boarding the riding equipment, and to safely get on and off the landings at both landings.

According to the third aspect of the present invention, the landing downstairs is the landing in front of the entrance stairs, the landing upstairs is the landing on the second floor, and the entrance stairs and the room are located between the landings. An inclined rail portion is disposed above the stairs, and a horizontal rail portion is disposed above the landing on the first floor located between both stairs, and a horizontal rail portion above the landing on the first floor is provided. Connect the inclined rail part above the entrance stairs and the inclined rail part above the indoor stairs via Since the horizontal rail above the landing on the second floor is connected to the other end of the inclined rail above the indoor stairs, the guide rail on which the traveling truck runs runs from the landing in front of the entrance stairs to the landing on the first floor. Landing on the second floor In it arranged in succession, ascending from the entrance stairs before landing at once and the entrance stairs and the indoor stairs 2
It is possible to reach the landing on the floor or, conversely, directly from the landing on the second floor to the landing in front of the entrance stairs. It is also possible to go up and down between the landing in front of the entrance stairs and the landing on the first floor, and up and down between the landing on the first floor and the landing on the second floor.
The range of use of the elevating device is expanded, and it is possible to safely get on and off at any landing.

According to the fourth aspect of the present invention, the elevating / lowering drive device of the riding device is connected to the riding member, the engaging member being driven up and down along the lifting frame, and the engaging member is connected to the engaging member. An engaged member that engages with the upper surface and rises integrally with the engaging member, and when the footrest is placed on a dance scene, the engaging member is located below the engaged member, Since the play is generated between the upper surface of the engagement member and the engaged member, the placement detection means does not need to strictly detect the contact placement of the footrest on the dance scene. The footrest can be securely placed on the dance scene in contact with the dance scene, and even if a mat or the like is laid on the landing surface, even if the landing surface is substantially raised, it can be securely placed on the mat. Can be placed. In other words, the cost can be reduced by using a relatively inexpensive limit switch or the like as the placement detection means, and no action is required even when the landing surface becomes substantially high due to the installation of a mat or the like. And can be reliably placed on a mat without contact.

According to the fifth aspect of the present invention, the placement detecting means comprises a distance sensor for detecting a distance to a dance scene and a position detecting sensor for detecting a vertical position of the engaging member. The lifting control means is configured to stop the lowering of the vehicle based on the placement detection by the distance sensor in preference to the placement detection by the position detection sensor. Even if the installation of the footrest is not detected for a reason, the lowering of the vehicle is reliably stopped based on the detection by the position detection sensor, and the lowering of the vehicle is preferentially stopped based on the detection by the distance sensor. Therefore, even when the mat or the like is laid as described above, the play does not increase between the upper surface of the engaging member and the engaged member, so that a time delay when the boarding device is raised is avoided. Door can be.

According to the sixth aspect of the present invention, the vehicle has an obstacle detection sensor for detecting an obstacle located below the footrest, and the elevation control means is based on the obstacle detection by the obstacle detection sensor. Therefore, even if there is an obstacle below the footrest, the obstacle is not pinched below the footrest.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a care lifting device according to the present invention. This lifting device
As shown in FIG. 1, a guide rail 1 provided near a ceiling of a house, and a traveling vehicle 2 running along the guide rail 1
And an elevating frame 3 as an elevating frame suspended from the traveling trolley 2, and a boarding tool 4 that moves up and down along the lifting frame 3, and the like. As shown in FIG. 1, a seat 5 for stool and a footrest 6 for placing feet are provided. Guide rail 1
Is a straight rail 1a and two types of curve rails 1b, 1c
From the porch A in front of the entrance stairs to the entrance porch C on the first floor, the entrance porch C on the first floor, the entrance porch D on the first floor, the hallway E of the entrance on the first floor, and the indoor stairs F, It is arranged continuously up to the corridor G on the floor. That is, the porch A in front of the entrance stairs as a landing downstairs, the porch C in front of the entrance as a landing upstairs, the entrance porch D, and the hallway E of the entrance across the entrance stairs B, and the indoor staircase F
, A front porch C, a front porch D, a hallway E at the entrance and a hallway G on the second floor as a landing hall on the upper floor are continuously provided, respectively.

The guide rail 1 includes a porch A in front of the entrance stairs, a porch C in front of the entrance, a porch D in the entrance, a corridor E in the entrance, 2.
Above the floor corridor G, the straight rails 1a are respectively arranged horizontally to form a horizontal rail portion 1A. Above the entrance stairs B and the indoor stairs F, the straight rails 1a are respectively connected to the respective stairs B and F. Each of the straight rails 1a is arranged so as to be inclined along the slope to constitute an inclined rail portion 1B.
The space is connected to each other by a curved rail 1b curved upward and a curved rail 1c curved downward. In this embodiment, the entrance stairs B
And the indoor stairs F have substantially the same gradient,
The two inclined rail portions 1B are disposed at substantially the same inclination angle. However, when the inclinations of both steps B and F are different, it is preferable that the both inclined rail portions 1B are disposed at an inclination angle along each inclination.

The guide rail 1 is made of aluminum having a sectional shape as shown in FIG. 8 and includes three upper and lower extending portions 7a, 7b and 7c extending left and right, and a lowermost extending portion 7c. A rack 8 formed separately is provided along the guide rail 1 and is fixed to the guide rail 1 by bolts or the like (not shown) at the center of the lower surface of the. Guide rail 1 having such a configuration
Are fixedly supported by a plurality of rail support members 9 fixed to an indoor wall and a rail support member 9 connected to a pole 10 erected outdoors. In addition, in the portion of the entrance door H, although not particularly shown, the entrance door H is divided into a narrow left door and a wide right door as viewed from the outside of the entrance, and is formed over both the left and right doors. The guide rail 1 is disposed in the notch, and the left and right doors are double-opened, so that only the right door is normally used.

As shown in FIGS. 5 to 7, the traveling carriage 2 has a pair of carriage frames 11 and an auxiliary frame 12 in the left and right lateral directions, and the carriage frame 11 is placed below and the auxiliary frame 12 is placed above. In this state, the upper and lower bogie frames 11 and the auxiliary frame 12 are pivotally connected to each other by a pair of front and rear connection links 13a and 13b, respectively.
A parallel quadruple link mechanism 14 is formed by the bogie frame 11, the auxiliary frame 12, and the pair of front and rear connection links 13a and 13b. Then, such a parallel quadruple link mechanism 14 is formed for each of the left and right sides, and the left and right parallel quadruple link mechanisms 14 are located on the left and right sides of the guide rail 1.

The bogie frame 11 and each connecting link 13
a and 13b are rotatably supported by bolts 16 via a bush 15 so as to be relatively rotatable in a vertically inflexible state, and the bogie frame 11 has a bolt 16 A roller shaft 17 protrudes coaxially with the roller shaft 17, and an idle main roller 18 is rotatably attached to the roller shaft 17. It is rotatably mounted in a state where it is positioned vertically. The auxiliary frame 12 and the connection links 13a and 13b are also pivotally connected to each other by bolts 20 so as to be relatively rotatable.
At the connection point between the second link 2 and the connection links 13a, 13b, bolt holes formed in the connection links 13a, 13b are formed in elongated holes 21 along the longitudinal direction of the links 13a, 13b, whereby the auxiliary frame 12 and both connection links are formed. 13
a and 13b are pivotally connected to each other with flexibility to allow relative movement in the vertical direction. An auxiliary roller 22 is also rotatably mounted on a side surface of the auxiliary frame 12 on the guide rail 1 side. Is rotatably mounted in a state of being located above the auxiliary roller 22.

As described above, one main roller 18 and two guide rollers 19 are provided before and after the bogie frame 11 along the longitudinal direction of the guide rail 1, respectively.
8 is located between the lowermost extension portion 7c and the central extension portion 7b, contacts the upper surface of the lowermost extension portion 7c, and rotates the riding device 4 via the elevating frame 3 while rotating. The guide roller 19 is supported so as to prevent the traveling carriage 2 from swinging in the lateral direction while rotating while being in contact with the center and the lateral side surfaces of the lowermost extension portions 7b and 7c. Similarly, one auxiliary roller 22 and one auxiliary guide roller 23 are provided before and after the auxiliary frame 12 along the longitudinal direction of the guide rail 1, respectively, and the auxiliary roller 22 is attached to the central extension portion 7b. The auxiliary guide roller 23 supports the auxiliary frame 12 while rotating in contact with the upper surface, and prevents the traveling carriage 2 from swinging in the lateral direction while rotating while being in contact with the lateral side surface of the uppermost extending portion 7a. Is configured. In other words, the traveling vehicle 2 has a total of four main rollers 18 and four auxiliary rollers 22, 8.
The guide rollers 19, and four auxiliary guide rollers 23 are provided in a state of being distributed to the left and right.

One of a pair of right and left bogie frames 11, that is, a lower portion of the bogie frame 11 which is located on the opposite side of the wall of the house when the traveling bogie 2 is assembled to the guide rail 1, has a motor via a horizontal shaft 24. A holding frame 25 is rotatably mounted, and a traveling electric motor 26 is mounted on the motor holding frame 25.
The motor shaft is mounted and fixed along the longitudinal direction of the traveling vehicle 2 so that the traveling electric motor 26 can rotate around the horizontal axis 24. A transmission 27 is integrated with and linked to the traveling electric motor 26, and a pinion 28 is attached to an output shaft projecting from the transmission 27, and the pinion 28 is attached to the rack 8 provided on the guide rail 1. It is configured to bite.

A bracket 29 is mounted below the bogie frame 11, and a coil spring 30 is stretched between the bracket 29 and the motor holding frame 25.
The running electric motor 26 on the motor holding frame 25 is elastically urged about the horizontal axis 24 by the coil spring 30, and the pinion 28 is elastically urged by the rack 8 to be securely engaged with the rack 8. Electric motor 26
The traveling carriage 2 can reciprocate along the guide rail 1 by the rotational drive of the pinion 28 by the forward / reverse rotational drive. A bolt 31 is screwed into the bracket 29, and the rotation range of the traveling electric motor 26 about the horizontal axis 24 is regulated by abutment of the motor holding frame 25 on the tip of the bolt 31. It is configured as follows.

The bogie frame 11 and the auxiliary frame 12
Is connected pivotally by a frame link 32 for attaching the lifting frame 3 in addition to the two connecting links 13a and 13b, and the lifting frame 3 is attached below the frame link 32. That is, the pair of front and rear connection links 13a and 13b and the bogie frame 11
At the center in the front-rear direction of the pivot point with
1 and the frame link 32 are pivotally connected by bolts 33 so as to be relatively rotatable in a vertically inflexible state,
In addition, the auxiliary frame 12 and the frame link 32
Bolt 35 penetrating slot 34 of frame link 32
Are pivotally connected so as to be relatively rotatable with flexibility in the vertical direction. The frame link 32 interlockingly connected to the left and right parallel quadruple link mechanisms 14 in this manner.
Of these, the frame link 32 on the side where the traveling electric motor 26 is located is bent below the traveling electric motor 26 toward the other frame link 32 side and fixed to each other, whereby the parallel links located on the left and right Quad link mechanism 1
4 are linked.

A pair of front and rear swing prevention members 36a, 36 slidable in the vertical direction are provided in front of and behind the carriage frame 11.
6b, an inclined surface 37 is formed at the upper end of each of the anti-swing members 36a, 36b, and an inclined surface 38 that slides in contact with each inclined surface 37 is provided at the front and rear of the auxiliary frame 12. Direction end. And
The swing preventing members 36a and 36b are elastically urged upward by springs 39a and 39b in a state where the upper limit is regulated, and the inclined surfaces 37 on the left and right sides of the swing preventing members 36a and 36b are similarly located on the left and right. Auxiliary frame 12
It is configured to elastically contact the inclined surface 38 on the side and to prevent the vertical frame 3 from shaking against deformation of the parallel quadruple link mechanism 14 due to the vertical swing of the vertical frame 3. I have. That is, the pair of front and rear swing prevention members 36
a, 36b and its inclined surface 37, the auxiliary frame 12 and its inclined surface 38, and the springs 39a and 39b,
When traveling on the inclined rail portion 1B of the traveling vehicle 2, while allowing the elevation frame 3 to incline in the longitudinal direction with respect to the traveling vehicle 2, the lifting frame 2 is prevented from swinging in the longitudinal direction, and When the traveling carriage 2 travels on the horizontal rail portion 1A, a swing prevention mechanism 40 that prevents the vertical movement of the lifting frame 3 in the front-rear direction is configured.

One of the bogie frames 11 in the front-rear direction,
In other words, on the right side of the vehicle 4 in a state of being seated on the seat 5, the connecting link 13b located on the right side is contacted,
A bolt 41 for preventing further rotation of the link 13b is screwed together, and the bolt 41 is used to maintain the vertical position of the lifting frame 3 when traveling on the inclined rail portion 1B of the traveling vehicle 2. Elevating frame 3 for traveling carriage 2
It is configured to function as a tilt posture holding mechanism for holding the tilt posture of. That is, when the elevating frame 3 inclines to the left in FIG. 6, the connecting link 13b located on the left abuts on the bolt 41, thereby preventing the elevating frame 3 from further turning to the left. It is configured to: Similarly, the left side of the bogie frame 11 while sitting on the seat 5, that is, the right side in FIG. 5, abuts the connection link 13a located on the right side, and rotates the link 13a further. The lifting bolt 3 is screwed together with the lifting bolt 3 to maintain the vertical posture of the lifting frame 3 when the traveling carriage 2 travels on the horizontal rail portion 1A. At the same time also functions as a swing prevention mechanism 40 for preventing the vertically moving frame 3 from swinging back and forth.

Rail switches 43a and 43b for rail end detection are attached to the front and rear of the bogie frame 11, and a limit switch 43a located on the right side while sitting on the seat 5 as shown in FIG. When the guide rail 1 comes into contact with a dog 44a attached near an end of the front porch A on the front of the entrance stairs, the end of the guide rail 1 on the side of the front porch A of the entrance is detected, and the traveling vehicle 2 travels. Similarly, the limit switch 43b located on the left side contacts the dog 44b near the end on the corridor G side on the second floor, thereby detecting the end of the guide rail 1 on the corridor G side on the second floor. Then, the traveling of the traveling vehicle 2 is stopped.

As shown in FIGS. 12 to 14, the lifting frame 3 is made of a hollow metal having a substantially rectangular cross-sectional shape, and has two reinforcing ribs 45 integrally formed on the front side and the rear side. The tongue piece 46 is integrally extended from the left and right sides toward the inside, and 2
The slits 47 of the book are formed in parallel along the longitudinal direction. At the lower end of the lifting frame 3, the rear side between the reinforcing ribs 45 and the slits 47 is removed, and the portions where the reinforcing ribs 45 are removed are shown in FIGS.
As shown in FIG. 1, the lifting electric motor 48 is inserted. The elevating electric motor 48 is mounted on the mounting plate 49 with its motor shaft oriented in a direction along the reinforcing ribs 45 of the elevating frame 3, that is, in a state orthogonal to the longitudinal direction of the guide rail 1. The drive sprocket 50 is mounted on the motor shaft of the lift shaft 3 so as to be positioned inside the lift frame 3.

An idle sprocket 52 is mounted above the elevating frame 3 via a chain tightener 51, and a chain 53 is wound around the idle sprocket 52 and the drive sprocket 50, and the endless end of the chain 53 is provided. A connecting rod 54 is interposed in a chain 53 having a shape of
An engaging member 55 having a larger diameter than the connecting rod 54 is integrally formed below the connecting rod 54. The lifting frame 3
The lifting frame 56 for connecting and holding the vehicle 4 is fitted to the
The elevating frame 56 is configured to enter the internal space of the elevating frame 3 from the slit 47 on the rear side while wrapping the front side of the elevating frame 3, and is positioned in the internal space. A cylinder 57 as an engaged member is attached to the lifting frame 56, and the cylinder 57 is connected to the connecting rod 54.
And the upper surface of the engaging member 55 is engaged with the lower surface of the cylindrical body 57 as the connecting rod 54 is raised by the rotation of the chain 53.

As shown in FIG. 12, on the left and right of the lifting frame 56 which has entered the internal space of the lifting frame 3, as shown in FIG.
A pair of front and rear guide rollers 59 which are located between the left and right tongue pieces 46 and the rear side and rotate in contact with the tongue pieces 46 are provided vertically, and as shown in FIG. A pair of left and right guide rollers 60 that are located between the rear side and the right and left sides of the elevating frame 3 and rotate in contact with the left and right sides are also provided. The engaging member 55 is engaged with the cylindrical body 57 by the rotation of the chain 53 by the forward / reverse rotation of the electric motor 48 for elevating and lowering, and the elevating frame 56 is made up of four front and rear guide rollers 59 in the same manner. Are vertically moved along the elevating frame 3 while being guided by the right and left guide rollers 60. Therefore, the elevating electric motor 48 and the chain 5
3, the engaging member 55, the cylindrical body 57, and the like constitute a lifting drive device for vertically moving the riding device 4 up and down. As shown in FIG. 14, a pair of upper and lower position detection limit switches 6 provided on the lifting frame 3 is provided on the lifting frame 56.
A dog 62 that comes into contact with the upper and lower limit switches 61a is attached to the upper end of the lifting switch 56a.
By contacting the lower limit switch 61b,
It is configured to detect the lower limit of the lifting frame 56 and stop the lowering.

As shown in FIGS. 2 and 3, the riding device 4 includes a backrest 63 and left and right armrests 64 in addition to the above-described seating seat 5 and footrest 6, and is located below the seating seat 5. The footrest 6 is attached via a connecting frame 65 to be connected, and the riding device 4 is connected and fixed to the elevating frame 56 so as to move up and down integrally with the elevating frame 56. The seat 5, the armrest 64, and the footrest 6 are all configured to be rotatable and fixed. As shown in FIG. 4 (a), all of the seat 5 is pivotally protruded forward and seated on the seat 5. As shown in (b) of FIG. 4, it is configured to be switchable between a standing posture using state in which only the footrest 6 is pivotally protruded to ride on the footrest 6 as shown in (b) of FIG. ), The footrest 6 is also configured to be switchable to a stored state in which the footrest 6 is also rotated and retracted rearward.

Since the swing fixing mechanisms such as the seat 5 and the armrest 64 are all the same in structure, the armrest 6
4 and 5, the armrest 64 is rotatably attached to the backrest 63, as shown in FIGS.
A plate 67 having two engaging holes 66 is fixed to the arm rest 64, and the plate 67 is configured to rotate integrally with the armrest 64. On the backrest 63 side, an engagement pin 68 inserted into the engagement hole 66 and engaged is slidably provided, and the engagement pin 68 is elastically attached to the plate body 67 side by a spring 69. The engaging pin 68 is urged against the elastic force of the spring 69 to pull the engaging pin 68 into one of the two engaging holes 66 so that the engaging pin 68 is pivoted upward with the above-described protruding posture. It is configured so that it can be fixed by switching to the stored posture.

At the left and right ends of the armrest 64,
An operation switch 70 is provided for each of the armrests 6.
In a sitting posture in which the rotation switch 4 is projected forward, the operation switch 70 is positioned forward, and in a standing posture in which the armrest 64 is rotated upward, the operation switch 70 is positioned upward, and the operation switch 70 is positioned on the armrest 64. The driving switch 70 can be operated with either the left or right finger in the sitting posture with the arm placed or in the standing posture in which the armrest 64, which is rotated upward and fixed, is grasped.
The operation switch 70 includes, for example, a rightward switch for instructing traveling of the vehicle 4 to the right in a seated position, a leftward switch for instructing traveling of the vehicle to the left, and a lift switch for instructing the vehicle 4 to rise. A down switch is provided to instruct the descent, and each switch is turned on when pressed.
It is configured as a self-return type switch that continues running and ascending, and turns off when stopped to stop running and ascending.

On the left and right side surfaces of the footrest 6, there are provided obstacle detection switches 71 which are turned on by contact with obstacles when traveling along the guide rail 1 to stop traveling. If there are obstacles,
A bite prevention switch 72 for detecting this and stopping the lowering of the footrest 6 is provided. As shown in FIG. 17, this biting prevention switch 72 is composed of two switches, a first photoelectric switch 72a and a second photoelectric switch 72b, and these two photoelectric switches 72a, 72b are provided.
Are attached to the connection frame 65 at intervals around the center of rotation of the footrest 6 with respect to the connection frame 65. When the shielding plate 73 is attached to the footrest 6 side and there is an obstacle below when the footrest 6 descends, the footrest 6 rotates upward and the first photoelectric switch 72a detects the shielding plate 73. Thereby, an obstacle is detected to prevent the footrest 6 from lowering, thereby preventing a foreign object from being caught below the footrest 6. That is, the first photoelectric switch 72a functions as an obstacle detection sensor that detects an obstacle located below the footrest 6. Note that the first photoelectric switch 72a and the second
When both the photoelectric switches 72b detect the shielding plate 73, the footrest 6 can be lowered because the footrest 6 is in the housed state.

The footrest 6 is further provided with a photoelectric distance sensor 74 for detecting the distance from the floor.
The lowering of the footrest 6 is stopped when the lower surface of the footrest 6 has landed on a floor or the like. That is, in addition to the ascending / descending position detecting limit switch 61b for detecting the lower limit of the lowering of the footrest 6, a distance sensor 74 for detecting landing on the floor is provided. If the floor surface becomes too high, the lifting / lowering electric motor 48 is preferentially stopped based on the landing detection by the distance sensor 74, and the distance sensor 74 detects the landing for some reason. If not, the lower limit switch 6 for detecting the elevation position
The lifting electric motor 48 is stopped by detecting the lower limit 1b. In other words, an ascent / descent position detection limit switch 61b for detecting the lower limit of the footrest 6 and a distance sensor 74 for detecting landing on the floor are provided by a placement detecting means for detecting the contact placement of the footrest 6 on the floor. And a vertical position detecting limit switch 61b
Functions as a position detection sensor that detects the vertical position of the engagement member 55, and the distance sensor 74 can also detect an obstacle below the footrest 6.

As shown in FIG. 4, pressure-sensitive tape switches 75a and 75b as appropriate posture detection switches are provided inside the seating portion of the seat 5 and inside the footrest portion of the footrest 6, respectively. And seat 5
When the pressure-sensitive tape switch 75a inside the seat 5 is not turned on in the seating posture using state where the footrest 6 is projected, and in the standing posture using state where only the footrest 6 is projected, the pressure-sensitive tape switch inside the footrest 6 is used. As long as 75b is not turned on, the travel and vertical movement of the vehicle 4 are stopped, and when the pressure-sensitive tape switches 75a and 75b are turned off during travel and vertical movement,
It is configured to automatically stop moving and traveling up and down.

In addition, as shown in FIG. 1, a remote control switch 76 is provided on the wall of the porch A in front of the entrance stairs, the corridor E of the entrance, and the corridor G on the second floor, so that the rider 4 is requested. It is configured such that the caregiver can operate the vehicle 4 when the vehicle is driven to a location or when the occupant cannot operate the operation switch 70. The power supply for the elevating device for nursing care is an AC power supply for ordinary households, and the electric motor 2 for traveling is drawn out and wound up from the cable drum 77 installed on the house side.
Although power is supplied to the motor 6 and the electric motor 48 for elevating and lowering, a rechargeable battery may be mounted on the traveling vehicle 2 and the like, and power may be supplied from the battery.

In the nursing care elevating device having such a configuration, all operations are controlled by the control device H as control means.
The control device H, as shown in FIG.
A main control unit H1 for controlling the operation of the vehicle 4 based on operation information input from the like, a traveling control unit H2 for controlling the traveling operation of the traveling vehicle 2, a lifting control means for controlling the vertical movement of the vehicle 4 The main control unit H1, the traveling control unit H2, and the lifting control unit H3 are configured to be able to communicate with each other.

The operation of the elevating device by the control device H will be described. For example, when boarding from the porch A in front of the entrance stairs, the seating seat 5, armrest 64, The footrest 6 and the like are rotated and projected as needed to switch to a desired use state. If the vehicle 4 is not on the porch A in front of the entrance stairs, the remote control switch 76 near the porch A in front of the entrance stairs is operated to call the vehicle 4 on the porch A in front of the entrance stairs. Switch to the state of use. In the case of using the seat in a sitting posture, the user lifts the right or left operation switch 70 while sitting on the seat 5. At this time, if the user is not seated in the proper posture with respect to the seating seat 5, the electric motor 48 for elevation is not driven because the pressure-sensitive tape switch 75a is not turned on. Drive rotationally.

When the lifting / lowering electric motor 48 is driven to rotate and the chain 58 is rotated, an engaging member 55 formed on the connecting rod 54 is formed.
Engages with the cylinder 57 on the side of the lifting frame 56, and then raises the lifting frame 56, that is, the boarding tool 4 with the rise of the engaging member 55, and the dog 62 attached to the lifting frame 56 moves upward. By contacting the limit switch 61a, the upper limit of the boarding tool 4 is detected and the ascent is stopped. Thereafter, when the leftward switch of the operation switch 70 is pressed, the traveling electric motor 26 is driven to rotate, and the traveling carriage 2 moves and travels along the guide rail 1 by the engagement of the pinion 28 with the rack 8 by the rotational driving. As the traveling carriage 2 travels, the vehicle 4 also travels integrally with the lifting frame 3. When reaching the entrance stairs B, the traveling vehicle 2 travels along the inclined rail portion 1B, and the vehicle 4 is centered on a bolt 33 that pivotally connects the frame link 32 and the vehicle frame 11 to each other. Due to its own weight, it swings integrally with the lifting frame 3 to deform the parallel quadruple link mechanism 14, so that the lifting frame 3 faces the vertical direction, and the seat 5 and the footrest 6 maintain the horizontal posture.

At this time, the ascending position of the vehicle 4 is set by the limit switch 61a and the dog 62 so that the lower end of the footrest 6 does not contact the entrance stairs B or the indoor stairs F. The vehicle travels while keeping the seat 5 and the footrest 6 in a horizontal posture without contacting the seat B and the indoor stairs F. If there is an obstacle on the entrance stairs B during this traveling, the obstacle detection switch 71 provided on the footrest 6 is turned on to stop traveling, and when the obstacle is removed, the traveling is resumed. When the passenger gets off the hallway E at the entrance, he releases the leftward switch of the operation switch 70 that was being pressed when the vehicle 4 reached the hallway E. Then, the traveling electric motor 26 stops, and then, by pressing the down switch of the operation switch 70, the lifting electric motor 48 is driven to rotate and the boarding equipment 4 descends.

At this time, if there is an obstacle below the vehicle 4, the footrest 6 swings slightly upward due to contact with the obstacle, and the first photoelectric switch 72 a of the biting prevention switch 72 is moved to the shielding plate 73. , The descent of the vehicle 4 is stopped, and when the obstacle is removed, the descent is restarted again. As shown in FIG. 18A, the photoelectric distance sensor 74 causes the footrest 6 to reach the floor surface. Simultaneously with the detection of the floor, the dog 62 comes into contact with the ascending / descending position detecting limit switch 61a located below, stopping the electric motor 48 for elevating and stopping the boarding equipment 4. When the lifting electric motor 48 is stopped, the upper surface of the engaging member 55 formed on the connecting rod 54 is set so as to be positioned below the lower surface of the cylinder 57 on the lifting frame 56 side by the play L1. As a result, the footrest 6 is securely placed on the floor, and if a mat M or the like is laid on the floor as shown in FIG. As a result, the lifting / lowering electric motor 48 is stopped, so that the engagement member 55 and the cylindrical body 5 are stopped.
7 is a play L2 that is slightly smaller than L1. Even in this case, the footrest 6 surely lands on the mat M.

[Another Embodiment] In the above embodiment,
An endless chain 53 is provided with an engagement member 55, and the engagement member 5
Although the configuration in which the riding device 4 is raised and lowered by the engagement of the cylinder 5 and the cylindrical body 57 has been described, the riding device 4 can be raised and lowered without using the chain 53. For example, a rack may be provided on the lifting frame 3 side, a pinion may be provided on the mounting device 4 side, and the mounting device 4 may be moved up and down by rotating the pinion, or a screw that can only rotate freely on the lifting frame 3 side. It is also possible to provide a shaft, link the mounting device 4 with a nut-shaped member screwed to the shaft, and move the mounting device 4 up and down by rotating the screw shaft.

Further, a wire take-up winch can be provided on the lifting frame 3 or the traveling carriage 2 to raise and lower the riding device 4 suspended by the wire. It is not necessary to use a chain in the shape of a circle, the chain is wound around a drive sprocket provided above, and the vehicle 4 is attached to one end of the chain.
As the lifting / lowering drive device of the vehicle 4, various configurations can be used, for example, the balance weight is attached to the other end, and the vehicle 4 is moved up and down by the rotation drive of the driving sprocket.

Also, an example has been shown in which the placement detection means is constituted by two sensors, the position detection sensor 61b and the distance sensor 74. However, the placement is performed using only one of the position detection sensor 61b and the distance sensor 74. It is also possible to configure the position detection means, and further, various modifications can be made to the specific configuration of the position detection sensor 61b and the distance sensor 74. For example, as a position detection sensor, a detection sensor comprising a light emitter and a light receiver is used. The position of the vehicle 4, that is, the position of the footrest 6 can be detected by detecting the light shielding member using the detection sensor.

[Brief description of the drawings]

FIG. 1 is a schematic overall view of a lift device for nursing care.

FIG. 2 is a perspective view of a traveling vehicle and a vehicle.

FIG. 3 is a front view of a traveling vehicle and a vehicle.

FIG. 4 is a side view showing a switching state of the boarding equipment.

FIG. 5 is a front view of a traveling vehicle.

FIG. 6 is a front view of a traveling vehicle.

FIG. 7 is a sectional view of a traveling vehicle.

FIG. 8 is a sectional view of a guide rail.

FIG. 9 is a diagram showing a rail end detection limit switch and a dog.

FIG. 10 is a front view showing the inside of the lifting frame.

FIG. 11 is a front view showing the inside of the lifting frame.

FIG. 12 is a cross-sectional view of a lifting frame.

FIG. 13 is a cross-sectional view of a lifting frame.

FIG. 14 is a cross-sectional view of a lifting frame.

FIG. 15 is a sectional view showing an armrest swing fixing mechanism.

FIG. 16 is a diagram showing the operation of the armrest swing fixing mechanism.

FIG. 17 is a diagram showing an obstacle detection switch;

FIG. 18 is a schematic side view showing the operation of the placement detecting means.

FIG. 19 is a block diagram showing a control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Guide rail 1A Horizontal rail part 1B Inclined rail part 2 Traveling trolley 3 Elevating frame 4 Boarding equipment 6 Footrest 55 Engaging member which constitutes an elevating drive device 57 Engaged member which constitutes an elevating drive device 61b Mounting detecting means Position detection sensor 72a Obstacle detection sensor 74 Distance sensor as placement detection means A Landing in front of entrance stairs as landing downstairs B Entrance stairs C For entrance stairs upstairs and entrance stairs Landing downstairs D Landing upstairs for entrance stairs, landing downstairs for indoor stairs E Landing upstairs for entrance stairs, landing downstairs for indoor stairs F Indoor stairs G Landing upstairs Landing on the second floor L1 and L2 play H3 elevation control means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B61B 13/02 B61B 13/02 E 13/06 13/06 Z

Claims (6)

[Claims] 1. A guide rail comprising a horizontal rail portion disposed above a landing downstairs and a landing upstairs, and connecting the two horizontal rail portions with an inclined rail portion interposed therebetween. A traveling vehicle that travels along the guide rail, and a mounting tool suspended downward from the traveling vehicle,
An elevating control device for controlling operation of an elevating drive device for vertically elevating and lowering the boarding device, wherein the elevating and lowering device for nursing care comprises: Along with the boarding device is configured to be able to move up and down, along with mounting detection means for detecting that the footrest provided on the boarding device is in contact with and mounted on the dance scene,
The elevating and lowering device for nursing care, wherein the elevating control means is configured to stop the lowering of the boarding device based on the detection of the placement of the footrest on the dance scene by the placement detecting means. 2. The landing on the lower floor is a landing on the first floor, the landing on the floor is a landing on the second floor, and an inclined rail portion is disposed above a staircase located between the landings. 2. The nursing care elevating device according to claim 1, wherein a horizontal rail portion disposed above both landings is connected via the portion. 3. The landing on the lower floor is a landing in front of the entrance stairs, the landing on the upper floor is a landing on the second floor, and a slope rail is provided above the entrance stairs and the indoor stairs located between the landings. A horizontal rail portion above the landing on the first floor located between the stairs, and a slope above the entrance stairs via the horizontal rail portion above the landing on the first floor Connect the rail part and the inclined rail part above the indoor stairs, and connect the horizontal rail part above the dance part in front of the entrance stairs to the other end of the inclined rail part above the entrance stairs, 2. The nursing care elevating device according to claim 1, wherein a horizontal rail portion above the landing on the second floor is connected to the other end. 4. An engaging member, wherein the lifting drive device is connected to the riding device and is engaged with an upper surface of the engaging member, the engaging member being driven up and down along the lifting frame. And an engaged member that rises integrally with the upper surface of the engaging member when the footrest is placed on a dance scene. The nursing care elevating device according to any one of claims 1 to 3, wherein play is generated between the joining member and the joining member. 5. The placement detecting means comprises a distance sensor for detecting a distance to a dance scene, and a position detecting sensor for detecting a vertical position of the engaging member, wherein the elevation control means comprises: 5. The system according to claim 4, wherein the lowering of the riding device is stopped based on the placement detection by the distance sensor, prior to the placement detection by the position detection sensor. 6.
The elevating and lowering device for nursing care according to 1. 6. The boarding device includes an obstacle detection sensor that detects an obstacle located below a footrest, and the elevation control unit detects the obstacle based on the obstacle detection by the obstacle detection sensor. The elevating and lowering device for care according to any one of claims 1 to 5, wherein the device is configured to stop descending.