JP3438806B2 - Nursing elevator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has horizontal rail portions arranged above a landing floor below and a landing floor above, respectively, and both horizontal rail portions are connected with an inclined rail portion interposed therebetween. The configured guide rail, the traveling carriage that travels along the guide rail, the elevating frame body that is hung downward from the traveling carriage, and the boarding device that can be vertically moved up and down along the elevating frame body. And an elevating / lowering device for nursing care, which comprises an elevating / lowering control means for controlling the operation of an elevating / lowering drive device for vertically moving the boarding device.

[0002]

2. Description of the Related Art Such a lifting device for nursing care is used by an elderly person or a physically handicapped person who is physically handicapped to put on a boarding device and ascends and descends stairs. It is often used that a guide rail is attached along the slope of the stairs, and a boarding equipment including a seat for seating and a footrest for placing feet is attached to the guide rail so as to be able to run directly. However, in this type of lifting device, since the boarding gear is directly attached to the guide rail along the slope of the stairs, the boarding gear cannot be lifted up and down with respect to the guide rail. When located on the landings downstairs or upstairs, the footrests are located above the floor of the landing. If there is a space between the bottom surface of the footrest and the landing floor, even if the space is small, there is a feeling of anxiety for the elderly and other people with disabilities, which makes it difficult to get on and off the footrest.

In addition, a guide rail is arranged above a stairway, and a cord-like body such as a wire is hung from a traveling carriage that travels along the guide rail. It is also known that the boarding equipment is moved up and down while winding up and down by a winding device provided on the traveling carriage side. With this type of lifting device, it is possible to place the footrests of the boarding equipment in contact with the floor of the landing, but since the boarding equipment is suspended by a string-shaped object, There is a risk that the boarding equipment will sway when moving up and down, making the lifting itself 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, There was room for improvement in this respect because the footrest could not be placed smoothly on the floor.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a nursing elevating / lowering device of the type in which a riding rig is suspended from a traveling carriage as described above so that the swaying of the riding rig can be reduced as much as possible, and the lifting and lowering can be performed stably. Therefore, the footrest of the boarding device can be smoothly placed on the floor surface of the landing or the like by contact therewith, and an object of the present invention is to provide an elevating / lowering device for care that can easily get on and off the footrest.

[0005]

In order to achieve this object, according to the invention described in claim 1, an elevating frame is suspended from a traveling carriage traveling along a guide rail, and the elevating frame is suspended. Since the boarding equipment can be vertically moved up and down along the frame, the boarding equipment can be vertically moved up and down more stably than when the boarding equipment is suspended by a cord-shaped body such as a wire. You can Then, a footrest provided on the boarding equipment is provided with a placement detection means for detecting that the footrest comes into contact with and is placed on a dance scene, and an elevating control means for controlling the operation of the elevating drive device for vertically elevating the riding equipment, Since the descending of the riding equipment is stopped based on the detection of the placement of the footrest on the dance scene by the placement detecting means, the footrest should be placed smoothly in contact with the landing surface. In addition to being able to, it is possible to safely get on and off the footrest without anxiety. In addition, raising and lowering of boarding equipment
Engagement member that moving device moves up and down along the lifting frame
Connected to the boarding gear and engaged with the upper surface of the engaging member.
The engaging member and the engaged member that integrally rises.
When the footrest is placed on the dance scene, the engagement
The member is located below the engaged member, and the upper surface of the engaging member is
It is configured so that there is play between the engaged members.
Therefore, the above-mentioned placement detecting means is used for the landing of the footrest.
Footless without strict detection of contact placement on the surface
Can be placed in contact with the dance scene without fail.
In addition, by laying a mat on the landing,
Ensures that the mat will remain on the mat even if the surface is raised
Can be placed. In other words, as the placement detection means
Cost by using a relatively inexpensive limit switch.
It is possible to use the mats and laying mats
No action is taken even if the surface becomes substantially higher
It is possible to place the contact securely on the mat without needing it.
it can.

According to the second aspect of the invention, the landing on the lower floor is the landing on the first floor, the landing on the upper floor is the landing on the second floor, and the inclined rail portion is located above the stairs located between the landings. Since the horizontal rails arranged above the landings are connected via the inclined rails, the guide rails on which the traveling carriage travels are the landing on the first floor and the landing on the second floor. It will be arranged continuously between
It is possible to board the boarding equipment and freely move up and down the stairs between the two landings, and to safely get on and off at both landings without anxiety.

According to the third aspect of the invention, the landing on the lower floor is the landing in front of the entrance stairs, the landing on the upper floor is the landing on the second floor, and the entrance stairs and the room located between the two landings. The inclined rails are arranged above the stairs, and the horizontal rails are arranged above the landing on the first floor located between both stairs. The horizontal rails above the landing on the first floor are Connect the inclined rail part above the entrance stairs and the inclined rail part above the indoor stairs via the other end of the inclined rail part above the entrance stairs, and the horizontal rail part above the dance part in front of the entrance stairs, Since the horizontal rails above the landing on the second floor are respectively connected to the other ends of the slanted rails above the indoor stairs, the guide rails on which the traveling carriages travel run from the landing in front of the entrance stairs to the landing on the first floor. After that, the 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 first floor or, conversely, to get off directly from the landing on the second floor to the landing in front of the entrance stairs. You can also go up and down between the landing in front of the entrance stairs and the landing on the first floor, or up and down between the landing on the first floor and the landing on the second floor,
As the range of use of the lifting device expands, it is possible to get on and off safely at any landing.

[0008]

According to the invention described in claim 4 , the placement detecting means comprises a distance sensor for detecting the distance to the dance scene and a position detecting sensor for detecting the vertical position of the engaging member. Since the lifting control means is configured to stop the descent of the riding equipment based on the placement detection by the distance sensor in preference to the placement detection by the position detection sensor, for example, the distance sensor Even if the installation of the footrest is not detected for some reason, the descending of the riding equipment is reliably stopped based on the detection by the position detection sensor, and the descending of the riding equipment is stopped preferentially 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, and therefore, the time delay when the riding tool is raised is avoided. Door can be.

According to the fifth aspect of the present invention, the riding equipment is provided with 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 caught below the footrest because it is configured to stop the descent of the boarding equipment.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lifting device for nursing care according to the present invention will be described with reference to the drawings. This lifting device
As shown in FIG. 1, a guide rail 1 provided near a ceiling of a house, and a traveling carriage 2 that travels along the guide rail 1
2, a lifting frame 3 as a lifting frame that is hung from the traveling carriage 2, and a riding tool 4 that moves up and down along the lifting frame 3, and the like. As shown in, the seating seat 5 for seating and the footrest 6 on which the foot is placed are provided. The guide rail 1
Is a straight rail 1a and two types of curved rails 1b and 1c
It is configured by connecting as appropriate, through the entrance stairs front porch A to the entrance stairs B, the first entrance front porch C, the first entrance porch D, the first entrance entrance corridor E, and the indoor stairs F to 2 It is arranged continuously up to the corridor G on the floor. That is, across the entrance stairs B, the front entrance stairs porch A as a landing on the lower floor and the front entrance porch C, entrance porch D, and entrance corridor E as the landings upstairs, and the indoor stairs F
The front porch C, the entrance porch D, and the entrance corridor E as a landing on the downstairs, and the corridor G on the second floor as the landing upstairs are respectively arranged in succession across the floor.

The guide rails 1 are 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 E, and 2.
Above the corridor G on the floor, the straight rails 1a are horizontally arranged 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 stairs B and F. The linear rails 1a are arranged so as to be inclined along the slope to form the 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
Since the indoor stairs F and the indoor stairs F have almost the same gradient,
Both inclined rail portions 1B are arranged at substantially the same inclination angle, but when the slopes of both stairs B and F are different, it is preferable to arrange them at the inclination angles along the respective slopes.

The guide rail 1 is made of aluminum having a cross-sectional shape as shown in FIG. 8, and is provided with three extending portions 7a, 7b, 7c extending in the left and right directions, and the extending portion 7c in the lowermost portion. In the center of the lower surface of the rack 8, a separately configured rack 8 is provided along the guide rail 1 and is fixed to the guide rail 1 by a bolt or the like (not shown). Guide rail 1 with such a configuration
However, it is fixed to and supported by a plurality of rail support members 9 fixed to indoor walls and a rail support member 9 continuous with a pole 10 standing outdoors. Although not shown in the drawing, the entrance door H is divided into a left side door having a narrow width and a right side door having a wide width when 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, the left and right doors are double-sided, and normally only the right door is used.

As shown in FIGS. 5 to 7, the traveling trolley 2 is provided with a pair of trolley frames 11 and auxiliary frames 12 in the lateral direction thereof, with the trolley frame 11 below and the auxiliary frame 12 above. In this state, the bogie frame 11 and the auxiliary frame 12 located above and below are pivotally connected to each other by a pair of front and rear connecting links 13a and 13b, respectively.
A parallel quadruple link mechanism 14 is formed by the dolly frame 11, the auxiliary frame 12, and the pair of front and rear connecting links 13a and 13b. The parallel four-link mechanism 14 is formed separately for the left and right sides, and the left and right parallel four-link mechanisms 14 are positioned on the left and right sides of the guide rail 1.

The carriage frame 11 and the connecting links 13
a and 13b are pivotally supported by a bolt 16 so as to be rotatable relative to each other in a vertical direction with a bush 15 interposed therebetween, and the bolt 16 is provided on a side surface of the carriage frame 11 on the guide rail 1 side. A roller shaft 17 is provided coaxially with the roller shaft 17, and a free-rotating main roller 18 is rotatably attached to the roller shaft 17. Further, a pair of upper and lower guide rollers 19 are provided on the carriage frame 11. It is rotatably attached in a state of being positioned vertically. The auxiliary frame 12 and each of the connecting links 13a and 13b are also pivotally connected by a bolt 20 so as to be relatively rotatable.
At the connection point between 2 and the connection links 13a, 13b, bolt holes formed in the connection links 13a, 13b are formed in the long holes 21 along the longitudinal direction of the links 13a, 13b, whereby the auxiliary frame 12 and both connection links are formed. Thirteen
a and 13b are pivotally connected to each other with a flexibility that allows relative movement in the vertical direction, the auxiliary roller 22 is rotatably attached to the side surface of the auxiliary frame 12 on the guide rail 1 side, and the auxiliary guide roller 23 is provided. Are rotatably attached in a state of being positioned above the auxiliary roller 22.

In this way, one main roller 18 and two guide rollers 19 are provided in front of and behind the bogie frame 11 along the longitudinal direction of the guide rail 1, respectively.
8 is located between the lowermost extended portion 7c and the central extended portion 7b, contacts the upper surface of the lowermost extended portion 7c, and rotates to move the boarding gear 4 through the lifting frame 3. The guide roller 19 is configured to support the center and the lateral sides of the lowermost extending portions 7b and 7c to rotate and prevent the traveling carriage 2 from swinging in the lateral direction. Similarly, one auxiliary roller 22 and one auxiliary guide roller 23 are provided in front of and behind the auxiliary frame 12 along the longitudinal direction of the guide rail 1, and the auxiliary roller 22 is located at the central extension portion 7b. The auxiliary guide roller 23 supports the auxiliary frame 12 while rotating in contact with the upper surface, and the auxiliary guide roller 23 prevents the lateral sway of the traveling carriage 2 while rotating while contacting the lateral side surface of the uppermost extension 7a. Is configured. In other words, the traveling carriage 2 has a total of four main rollers 18 and four auxiliary rollers 22 and 8 in total.
The individual guide rollers 19 and the four auxiliary guide rollers 23 are provided in the state of being distributed right and left.

One of the pair of left and right bogie frames 11, that is, below the bogie frame 11 located on the side opposite to the wall of the house when the traveling bogie 2 is assembled to the guide rail 1, a motor is provided via a horizontal shaft 24. A holding frame 25 is rotatably attached, and a traveling electric motor 26 is mounted on the motor holding frame 25.
Is mounted and fixed such that its motor shaft extends along the front-rear direction of the traveling carriage 2, whereby the traveling electric motor 26 can rotate about the horizontal shaft 24. A transmission 27 is integrally and interlockingly connected to the traveling electric motor 26, a pinion 28 is attached to an output shaft protruding from the transmission 27, and the pinion 28 is attached to the rack 8 provided on the guide rail 1. It is configured to occlude.

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 traveling electric motor 26 on the motor holding frame 25 is elastically biased by the coil spring 30 about the horizontal shaft 24, and the pinion 28 is elastically biased by the rack 8 so as to surely engage with each other. Electric motor 26
The traveling carriage 2 is configured to be able to travel back and forth along the guide rail 1 by the rotational drive of the pinion 28 by the forward and reverse rotational drive. A bolt 31 is screwed into the bracket 29, and the abutment of the motor holding frame 25 to the tip of the bolt 31 regulates the rotation range of the traveling electric motor 26 about the horizontal shaft 24. Is configured.

The bogie frame 11 and the auxiliary frame 12
In addition to both connecting links 13a and 13b, is also pivotally connected by a frame link 32 for attaching the elevating frame 3, and the elevating frame 3 is attached below the frame link 32. That is, the pair of front and rear connecting links 13a and 13b and the bogie frame 11
At the center in the front-rear direction of the pivot point of the carriage frame 1
1 and the frame link 32 are pivotally supported by a bolt 33 so as to be rotatable relative to each other in a vertically inflexible state,
Moreover, the auxiliary frame 12 and the frame link 32 are
Bolt 35 penetrating the long hole 34 of the frame link 32
Is pivotally connected so as to be relatively rotatable in a vertically flexible state. In this way, the frame link 32 interlockingly connected to the parallel four-link mechanism 14 located on the left and right sides.
Among them, the frame link 32 on the side on which the traveling electric motor 26 is located is bent to the other frame link 32 side below the traveling electric motor 26 and fixed to each other, whereby the parallel links positioned on the left and right sides are formed. Quad link mechanism 1
4 linkages are planned.

In front of and behind the bogie frame 11, a pair of front and rear anti-sway members 36a, 3 slidable in the vertical direction.
6b are provided, inclined surfaces 37 are formed at the upper ends of the respective shaking prevention members 36a and 36b, and inclined surfaces 38 that come into contact with the inclined surfaces 37 and slide relative to each other are provided on the front and rear sides of the auxiliary frame 12. It is formed at the end of the direction. And
The shaking prevention members 36a, 36b are elastically biased upward by the springs 39a, 39b in a state where the upper limit is restricted, and the inclined surfaces 37 on the left and right sides of the shaking prevention members 36a, 36b are also positioned on the left and right. Auxiliary frame 12
It is configured to elastically contact the side inclined surface 38 and to prevent the vertical movement frame 3 from rocking against the deformation of the parallel four-link mechanism 14 due to the vertical motion of the vertical movement frame 3. There is. That is, the pair of front and rear shaking prevention members 36
a, 36b and its inclined surface 37, auxiliary frame 12 and its inclined surface 38, and springs 39a, 39b are
When the traveling vehicle 2 travels on the inclined rail portion 1B, the vertical movement of the elevating frame 2 is prevented while allowing the elevating frame 3 to incline in the front-back direction with respect to the traveling vehicle 2, and When the traveling carriage 2 travels on the horizontal rail portion 1A, a shaking prevention mechanism 40 for preventing the lifting frame 3 from shaking in the front-rear direction is configured.

One of the front and rear directions of the bogie frame 11,
That is, on the right side of the seating tool 5 of the boarding tool 4 while sitting down, the connection link 13b located on the right side is abutted,
A bolt 41 for preventing further rotation of the link 13b is screwed, and the bolt 41 maintains the vertical posture of the elevating frame 3 when traveling on the inclined rail portion 1B of the traveling carriage 2. Lifting frame 3 for the traveling carriage 2
It is configured to act as a tilt posture holding mechanism that holds the tilt posture. That is, when the elevating frame 3 inclines to the left in FIG. 6, the connecting link 13b located on the left side abuts the bolt 41, thereby preventing the elevating frame 3 from rotating further to the left. Is configured to. Similarly, the left side of the bogie frame 11 in a state where the seat seat 5 is seated, that is, the right side in FIG. 5, is brought into contact with the connecting link 13a located on the right side, and further rotation of the link 13a is prevented. A blocking bolt 42 is screwed into the bolt 42, and the bolt 42 maintains the vertical posture of the lifting frame 3 during traveling on the horizontal rail portion 1A of the traveling carriage 2. At the same time, also acts as a shake prevention mechanism 40 that prevents the lift frame 3 from swinging in the front-rear direction.

Rail end detecting limit switches 43a and 43b are attached to the front and rear of the bogie frame 11, and the limit switch 43a located on the right side while sitting on the seat 5 is as shown in FIG. By contacting the dog 44a attached near the end of the entrance stairs front porch A side of the guide rail 1, the end of the guide rail 1 on the entrance stairs front porch A side is detected and the traveling carriage 2 travels. Similarly, the limit switch 43b located on the left side detects the end of the guide rail 1 on the second floor corridor G side by contacting the dog 44b near the end on the second floor corridor G side. Then, the traveling of the traveling carriage 2 is stopped.

As shown in FIGS. 12 to 14, the elevating frame 3 is made of a hollow metal having a substantially rectangular cross section, and two reinforcing ribs 45 are integrally formed on the front side and the rear side. Tongues 46 are integrally formed from the left and right sides toward the inside, and the tongue piece 46 is integrally formed on the rear side.
Book slits 47 are formed in parallel along the longitudinal direction. At the lower end of the elevating frame 3, the rear side between the reinforcing rib 45 and both slits 47 is removed, and the portion where the reinforcing rib 45 is removed is shown in FIGS.
As shown in FIG. 1, the lifting electric motor 48 is at the insertion position. The lifting electric motor 48 has a mounting plate 49 with its motor shaft oriented in the direction along the reinforcing ribs 45 of the lifting frame 3, that is, in the direction orthogonal to the longitudinal direction of the guide rail 1. The drive sprocket 50 is mounted on the motor shaft of the drive sprocket 50 while being positioned inside the lift frame 3.

An idling sprocket 52 is attached to the inside of the upper part of the elevating frame 3 via a chain tensioner 51, and a chain 53 is wound around the idling sprocket 52 and the drive sprocket 50, and the endless thereof is provided. The connecting rod 54 is interposed in the chain 53,
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
An elevating frame 56 for connecting and holding the boarding equipment 4 is externally fitted to the
The elevating frame 56 is configured so as to enter the internal space of the elevating frame 3 through the slit 47 on the rear side in a state of enclosing the front side of the elevating frame 3 and is positioned in the inner space. A tubular body 57 as an engaged member is attached to the elevating frame 56, and the tubular body 57 is connected to the connecting rod 54.
The upper surface of the engaging member 55 engages with the lower surface of the tubular body 57 as the connecting rod 54 rises due to the rotation of the chain 53.

As shown in FIG. 12, to the left and right of the elevating frame 56 portion that has entered the internal space of the elevating frame 3.
A pair of front and rear guide rollers 59, which are located between the left and right tongues 46 and the rear side and rotate in contact with the tongues 46, are provided above and below, and as shown in FIG. A pair of left and right guide rollers 60, which are located between the rear side and the rear side and are in contact with the left and right sides of the elevating frame 3 and rotate, are also provided. The engagement member 55 is engaged with the tubular body 57 by the rotation of the chain 53 by the forward / reverse rotation drive of the lifting / lowering electric motor 48, and the lifting / lowering frame 56 includes four front / rear guide rollers 59 as well as four in total. While being guided by the left and right guide rollers 60, it is configured to ascend and descend along the elevating frame 3, and therefore, the elevating electric motor 48 and the chain 5
3, the engaging member 55, the cylindrical body 57, and the like constitute an elevating and lowering drive device that vertically elevates and lowers the riding tool 4. As shown in FIG. 14, the elevating frame 56 includes a pair of upper and lower elevating position detecting limit switches 6 provided on the elevating frame 3.
1a, 61b is attached to the dog 62, and the dog 62 comes into contact with the upper limit switch 61a, thereby detecting the upper limit of the elevating frame 56 and stopping the ascent,
By contacting the lower limit switch 61b,
The lower limit of the elevating frame 56 is detected and the lowering is stopped.

As shown in FIGS. 2 and 3, the riding equipment 4 includes a backrest 63 and left and right armrests 64 in addition to the seat 5 and the footrest 6 described above, and is located below the seat 5. The footrest 6 is attached via a connecting frame 65, and the riding tool 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, and as shown in FIG. 4 (a), all are seated on the seat 5 by pivotally projecting forward. It is configured such that it can be switched between the posture use state and the standing posture use state in which only the footrest 6 is pivotally projected so as to ride on the footrest 6, as shown in (b) of FIG. ), The footrest 6 is also configured to be switchable to a storage state in which the footrest 6 is also rotated and retracted rearward.

Since the rocking and fixing mechanisms such as the seat 5 and the armrest 64 have the same structure, the armrest 6
The rocking fixing mechanism of No. 4 will be described. As shown in FIGS. 15 and 16, an armrest 64 is rotatably attached to a backrest 63.
A plate 67 having two engaging holes 66 is fixedly attached to the plate 67 so that the plate 67 rotates integrally with the armrest 64. On the backrest 63 side, an engagement pin 68 that is inserted into and engaged with the engagement hole 66 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 to pull the engaging pin 68 against the elastic force of the spring 69, and the engaging pin 68 is inserted into either one of the two engaging holes 66 to rotate the projecting posture and the upward direction. It can be fixed by switching to a different storage posture.

At the left and right ends of the armrest 64,
Each has an operation switch 70, and the armrest 6
4 in a seated position in which the switch 4 is pivoted forward, the operation switch 70 is positioned in the front, and in a standing position in which the armrest 64 is rotated upward, the drive switch 70 is positioned in the upper position and placed on the armrest 64. The operation switch 70 can be operated with either of the left and right fingers even in the sitting posture with the arm placed and in the standing posture with the armrest 64 pivotally fixed upward.
The driving switch 70 includes, for example, a rightward switch for instructing the rider 4 to travel to the right in the seated posture, a leftward switch for instructing the rider to move to the left, and a lift switch for instructing the rider 4 to move up. Equipped with a descent switch for instructing descent, each switch is ON when pressed
It is configured as a self-reset type switch that keeps running and climbing, and turns off when released to stop running and climbing.

On the left and right side surfaces of the footrest 6, there are provided obstacle detection switches 71 which are turned on when the vehicle travels along the guide rail 1 and come into contact with an obstacle to stop traveling, and below the footrest 6. If there are obstacles,
A bite prevention switch 72 is provided which detects this and stops the descending of the footrest 6. As shown in FIG. 17, this bite 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 and 72b.
Are mounted at intervals around the center of rotation of the footrest 6 with respect to the connection frame 65, and are attached to the connection frame 65. Then, the shield plate 73 is attached to the footrest 6 side, and when the footrest 6 descends and there is an obstacle below, the footrest 6 rotates upward, and the first photoelectric switch 72a detects the shield plate 73. Accordingly, an obstacle is detected to prevent the footrest 6 from descending and prevent foreign matter from being caught below the footrest 6. That is, the first photoelectric switch 72a acts as an obstacle detection sensor that detects an obstacle located below the footrest 6. The first photoelectric switch 72a and the second photoelectric switch 72a
When both the photoelectric switches 72b detect the shield plate 73, the footrest 6 is in the housed state, and thus the footrest 6 can be lowered.

The footrest 6 is further provided with a photoelectric distance sensor 74 for detecting the distance to the floor surface,
The lower surface of the footrest 6 is configured to stop descending of the footrest 6 when landing on the floor surface or the like. That is, since the distance sensor 74 for detecting the landing on the floor is provided in addition to the ascending / descending position detecting limit switch 61b for detecting the lower limit of the descending of the footrest 6, it is practical to lay a mat or the like on the floor. If the floor surface becomes higher, the electric motor 48 for raising and lowering is preferentially stopped based on the landing detection by the distance sensor 74, and the distance sensor 74 temporarily detects the landing for some reason. If not, the limit switch 6 for detecting the up / down position located below
When the lower limit of 1b is detected, the lifting / lowering electric motor 48 is stopped. In other words, the lift position detecting limit switch 61b for detecting the lower limit of the footrest 6 and the distance sensor 74 for detecting the landing on the floor surface detect the contact placement of the footrest 6 on the floor surface. And a limit switch 61b for detecting an ascending / descending position.
However, it functions as a position detection sensor that detects the vertical position of the engaging 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 proper posture detecting switches are provided inside the seated portion of the seat 5 and inside the footrest portion of the footrest 6, respectively. Sitting seat 5
In the seated posture use state in which the foot is projected, unless the pressure sensitive tape switch 75a inside the seat 5 is turned on, and in the standing posture use state in which 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 traveling traveling or vertical movement of the riding equipment 4 is stopped, and if the pressure sensitive tape switches 75a, 75b are turned off during traveling traveling or vertical movement,
It is configured to automatically stop traveling and vertical movement.

In addition, as shown in FIG. 1, a remote control switch 76 is provided on the walls of a porch A in front of the entrance stairs, a corridor E at the entrance, and a corridor G on the second floor. It is configured so that the caregiver can operate the boarding tool 4 when the vehicle is run to a location or when the passenger cannot operate the operation switch 70. In addition, the power source of the lifting device for nursing care is an AC power source for general households, and the electric motor 2 for traveling is used while paying out or winding up the cable 78 from the cable drum 77 installed on the house side.
6, the electric motor 48 for raising and lowering is supplied with electric power, but it is also possible to mount a rechargeable battery on the traveling vehicle 2 etc. and supply electric power from the battery.

In the lifting device for nursing care having such a configuration, all operations are controlled by the control device H as a control means.
The control device H, as shown in FIG.
A main control unit H1 that controls the operation of the boarding gear 4 based on operation information input from the above, a travel control unit H2 that controls the travel operation of the traveling carriage 2, and a lifting control unit that controls the vertical lifting operation of the riding tool 4. The main control unit H1, the traveling control unit H2, and the elevating control unit H3 are communicable with each other.

The operation of the lifting device by the control device H will be described. For example, when boarding from the porch A in front of the entrance stairs, the seat 5 and the armrest 64 depending on whether the seat is used or the standing position. The footrest 6 and the like are appropriately rotated and projected to switch to a desired use state. If the boarding equipment 4 is not on the porch A in front of the entrance stairs, operate the remote control switch 76 near the porch A in front of the entrance stairs to call the boarding equipment 4 to the porch A in front of the entrance stairs Switch to the used state. In the case of using the seated posture, the user sits down on the seat 5 and presses the raising switch of either the left or right operation switch 70. At this time, unless the user sits down on the seat 5 in an appropriate posture, the pressure-sensitive tape switch 75a does not turn on, so the lift electric motor 48 does not drive. Drive to rotate.

When the electric motor 48 for raising and lowering is rotationally driven to rotate the chain 58, an engaging member 55 formed on the connecting rod 54.
Engages with the tubular body 57 on the elevating frame 56 side, and thereafter, the elevating frame 56, that is, the boarding device 4 is raised as the engaging member 55 rises, and the dog 62 attached to the elevating frame 56 moves upward. By contacting the limit switch 61a, the upper limit of the riding tool 4 is detected and the ascent is stopped. After that, when the leftward switch of the operation switch 70 is pressed, the traveling electric motor 26 is rotationally driven, and the traveling carriage 2 is moved and travels along the guide rail 1 due to the rotation of the pinion 28 engaging with the rack 8. As the traveling carriage 2 travels, the boarding gear 4 also travels integrally with the lifting frame 3. When reaching the entrance stairs B, the traveling carriage 2 travels along the inclined rail portion 1B, and the boarding gear 4 is centered around the bolt 33 that pivotally connects the frame link 32 and the carriage frame 11. Due to its own weight, it swings integrally with the lifting frame 3 to deform the parallel four-link mechanism 14, the lifting frame 3 faces the vertical direction, and the seating seat 5 and the footrest 6 maintain a horizontal posture.

At this time, the limit switch 61a and the dog 62 are used to set the rising position of the boarding gear 4 so that the lower end of the footrest 6 does not come into contact with the entrance stairs B or the indoor stairs F. The seat 5 and the footrest 6 are maintained in a horizontal posture and run without contacting B or the indoor stairs F. If there is an obstacle on the entrance stairs B or the like during this traveling, the obstacle detection switch 71 provided on the footrest 6 is turned on to stop the traveling, and when the obstacle is removed, the traveling is restarted again. When getting off in the hallway E at the entrance, the leftward switch of the driving switch 70, which was being pushed when the boarding equipment 4 reached the hallway E, is released. Then, the traveling electric motor 26 is stopped, and thereafter, by pushing the lowering switch of the operation switch 70, the raising / lowering electric motor 48 is rotationally driven, and the riding equipment 4 is lowered.

At this time, if there is an obstacle below the riding tool 4, the footrest 6 swings slightly upward due to the contact with the obstacle, and the first photoelectric switch 72a of the bite prevention switch 72 causes the shield plate 73 to move. The descent of the boarding equipment 4 is stopped by detecting this, and the descent is resumed when the obstacle is removed. As shown in FIG. 18A, the photoelectric distance sensor 74 attaches the footrest 6 to the floor surface. Simultaneously with the detection of the floor, the dog 62 comes into contact with the lift position detecting limit switch 61a located below, and the lifting electric motor 48 is stopped to stop the riding equipment 4. When the electric motor 48 for raising and lowering is stopped, the upper surface of the engaging member 55 formed on the connecting rod 54 is set so as to be located below the lower surface of the tubular body 57 on the raising and lowering frame 56 side by a play L1. Therefore, the footrest 6 is surely landed on the floor surface, and if the mat M or the like is laid on the floor surface as shown in (b) of FIG. 18, it is detected based on the landing detection by the distance sensor 74. As a result, the electric motor 48 for raising and lowering is stopped, so that the engaging member 55 and the cylindrical body 5
The play with L7 is play L2 which is slightly smaller than L1, and in that case as well, the footrest 6 surely lands on the mat M.

[Other Embodiments] In the previous embodiment,
The endless chain 53 is provided with the engaging member 55, and the engaging member 5
Although the configuration in which the riding tool 4 is moved up and down by the engagement of 5 and the tubular body 57 is shown, the riding tool 4 can be moved up and down without using the chain 53. For example, a rack is provided on the lifting frame 3 side and a pinion is provided on the riding tool 4 side so that the riding tool 4 is lifted and lowered by the rotational drive of the pinion, or a screw that is only rotatable on the lifting frame 3 side. It is also possible to provide a shaft, and to move the riding tool 4 side by interlocking the riding tool 4 side with a nut-shaped member that is screwed to the shaft, and to raise and lower the riding tool 4 by rotationally driving the screw shaft.

Further, a winch for winding the wire may be provided on the elevating frame 3 and the traveling carriage 2 to elevate the boarding equipment 4 suspended by the wire. Further, when the chain 53 is used, it is not always endless. It is not necessary to use a chain-shaped chain, wrap the chain around the drive sprocket provided above, and attach the riding tool 4 to one end of the chain,
As a lifting / lowering drive device for the riding tool 4, various configurations can be used, such as attaching a balance weight to the other end and raising / lowering the riding tool 4 by rotationally driving the drive sprocket.

Further, although an example in which the placement detecting means is constituted by two sensors, that is, the position detecting sensor 61b and the distance sensor 74 is shown, only one of the position detecting sensor 61b and the distance sensor 74 is used. The position detecting means can be configured, and various modifications can be made to the specific configurations of the position detecting sensor 61b and the distance sensor 74. For example, the position detecting sensor includes a light emitting device and a light receiving device. Alternatively, the position of the riding tool 4, that is, the footrest 6 can be detected by detecting the light shielding member by the detection sensor.

[Brief description of drawings]

FIG. 1 Schematic overall view of a lifting device for nursing care

FIG. 2 is a perspective view of the traveling carriage and the boarding gear.

[Fig. 3] Front view of traveling carriage and boarding equipment

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

[Fig. 5] Front view of the traveling carriage

FIG. 6 is a front view of the traveling carriage.

[Fig. 7] Cross-sectional view of traveling carriage

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

FIG. 9 is a view showing a limit switch for detecting the end of the rail 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 sectional view of a lifting frame.

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

FIG. 14 is a sectional view of the lifting frame.

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

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

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

FIG. 18 is a schematic side view showing the operation of the placement detection 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 vehicle 3 Elevating frame 4 Riding equipment 6 Footrest 55 Engaging member 57 that constitutes an elevating drive device Engaged member 61b that constitutes an elevating drive device Placement detecting means Position detection sensor 72a as an obstacle detection sensor 74 distance sensor A as a placement detection means A entrance as a landing downstairs A landing in front of the stairs B A entrance stairs C An entrance stairs upstairs and an indoor stairs Downstairs D D Upstairs to the entrance stairs, downstairs to the indoor stairs E Upstairs to the entrance stairs, downstairs to the indoor stairs F Indoor stairs G Upstairs 2nd floor landing L1, L2 Play H3 Lift control means

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Publication No. 55-15341 (JP, B2) Japanese Publication No. 59-18314 (JP, B2) Japanese Publication No. 1-44632 (JP, B2) (58) Field (Int.Cl. ⁷ , DB name) B66B 9/08

Claims (5)

(57) [Claims] 1. A guide rail configured by arranging horizontal rail portions above a landing floor below and a landing floor above, respectively, and connecting both horizontal rail portions with an inclined rail portion interposed therebetween. A traveling carriage that travels along the guide rail, and a riding tool that is hung downward from the traveling carriage,
A nursing elevating and lowering device comprising an elevating and lowering control means for controlling the operation of an elevating and lowering drive device for vertically ascending and descending the boarding device, wherein an elevating and lowering frame is hung below the traveling carriage and the elevating and lowering frame is Along with the above-mentioned boarding equipment configured to be able to move up and down, a mounting detection means for detecting that a footrest provided on the boarding equipment comes into contact with a dance scene and is mounted,
The ascending / descending control means is configured to stop the descending of the riding equipment based on the placement detection of the footrest on the dance scene by the placement detecting means , and the ascending / descending drive device makes the ascending / descending frame body. Drive up and down along
Engaging member for connecting to the boarding device, and the engaging member.
The upper surface of the mating member engages with the upper surface of the engaging member and rises integrally.
And a footrest mounted on a dance scene.
When placed, the engaging member is located below the engaged member.
And a care lifting device configured so that there is play between the upper surface of the engaging member and the engaged member . 2. The downstairs landing is a landing on the first floor, and the landing upstairs is a landing on the second floor, and an inclined rail portion is disposed above the stairs located between the landings, and the inclined rail is provided. The elevating / lowering device for care according to claim 1, wherein horizontal rail portions arranged above both landings are connected through the portions. 3. The landing below the landing is a landing in front of the entrance stairs, and the landing upstairs is a landing on the second floor, and inclined rails are provided above the entrance stairs and the indoor stairs located between the two landings, respectively. A horizontal rail part is provided above the landing on the first floor, which is located between both stairs, and a slope above the entrance stairs via the horizontal rail above the landing on the first floor. While connecting the rail part and the inclined rail part above the indoor stairs, at the other end of the inclined rail part above the entrance stairs, the horizontal rail part above the dance part in front of the entrance stairs and the inclined rail part above the indoor stairs The lifting device for nursing care according to claim 1, wherein horizontal rail portions above the landing on the second floor are connected to the other ends. Wherein said mounting置検out means, to the dance scenes
A distance sensor for detecting the distance and the vertical direction of the engaging member
The position detection sensor for detecting the position
The descending control means is superior to the placement detection by the position detection sensor.
First, based on the placement detection by the distance sensor,
It is constituted to so that to stop the descent of the serial boarding device according to claim 1
<3> The lifting device for nursing care according to any one of <3> to <3>. 5. The boarding device is positioned below a footrest
The obstacle detection sensor for detecting the obstacle
The descending control means detects an obstacle by the obstacle detection sensor.
And configured to stop the lowering of the boarding gear based on
The lifting device for nursing care according to any one of claims 1 to 4 .