JP2003300683A - Stair lift - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install a stair lift on a small stairway by reducing the amount that a guide rail for guiding a lift in moving protrudes toward the floor face of a lower story. <P>SOLUTION: First guide rails 11, 12 and 13 for guiding the travel rollers 31, 32 and 33 of the lift in moving are provided with respective normal inclined portions 11a, 12a and 13a, and respective steeply inclined portions 11b, 12b and 13b at the lower ends of the normal inclined portions, the steeply inclined portions having a greater angle of inclination than the normal inclined portions. A drive chain 15 and a connecting member 18 are swingably connected to each other by a first connection 61, and the lift 14 and the connecting member 18 are swingably connected to each other by a second connection 62. As the lift is lowered with the travel rollers moving from the normal inclined portions to the steeply inclined portions, the second connection 62 gradually leaves the drive chain 15, without the first connection 61 deviating greatly from the direction of movement of the drive chain 15. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stair lift for people with walking disabilities installed on stairs, and more particularly to a stair lift suitable for installation on a shared staircase of a low-rise apartment complex such as a housing complex.

[0002]

2. Description of the Related Art Conventionally, as stair lifts used for public stairs at stations and the like, those shown in, for example, Japanese Patent Nos. 2520216 and 2527521 have been proposed.

This is a guide device installed on the side wall of a staircase, a moving body that moves between the upper floor surface and the lower floor surface along the guide device, and is towed by this moving body. And a moving body that meshes with the chain rack of the guide device to move, and the moving body moves while being guided by the upper guide rail and the lower guide rail of the guide device while maintaining a horizontal state. It is a thing.

As a stair lift for a private house, for example, one disclosed in Japanese Examined Patent Publication No. 6-57587 is proposed. This one is equipped with a rail and a chain installed along the stairs, and an elevating body having a guide roller and an electric motor. The elevating body holds the guide roller on the rail to maintain a horizontal state, and the electric motor The sprocket driven by is engaged with the chain to move.

[0005]

However, the stair lifts for both public and private houses described above tend to have a large installation space, and it is difficult to install them on stairs with a small installation space. There was a problem.

That is, the above public stair lift is
A pair of guide rollers are provided in front of the movement of the conveying body, and these guiding rollers are brought into rolling contact with the upper guide rail and the lower guide rail by a moment based on the gravity of the conveying body to maintain a horizontal state. A space for the carrier is required on the floor side of the lower floor, and the guide device itself also moves the carrier from the floor surface of the lower floor along the stairs, so it is necessary to extend it greatly to the floor side of the lower floor. is there.

Further, the stair lift for the above-mentioned personal house is
The rail has an upper flange portion and a lower flange portion, and by rolling guide rollers on these flange portions to change the distance between both flange portions, the rail maintains a horizontal state and a person with a walking disability can get on. An electric motor is provided on the lifting body itself to form a moving member.Therefore, in order for people with walking disabilities to get on and off the lifting body, rails are extended by a predetermined amount on both the upper floor and the lower floor. Need to be installed.

Further, since the public stair climbing machine described above momentarily supports the carrier on which the electric wheelchair or the like is mounted on the rails and incorporates the electric motor in the moving body,
This becomes a large-scale device in the width direction of the stairs and narrows the effective width of the stairs. Similarly, the above-mentioned stair lift for a private house also has a chair with an electric motor built in the carrier and a chair, so a relatively large space is required in the width direction of the stairs, resulting in a narrow effective width of the stairs. .

As described above, the stair lifts for public and private houses described above require a relatively large installation space in the floors of the upper and lower floors of the stairs and in the width direction.

On the other hand, the stairs to which the stair lift is installed have a relatively small space.

For example, in a staircase type apartment house on the 5th floor or lower, a landing (intermediate floor) is generally provided between the upper floor and the lower floor as a staircase, and the landing is 180 degrees. The so-called folding stairs are adopted. This folding staircase is a shared space, and only the minimum necessary space for moving luggage when moving in or out is secured. For this reason, the space for installing the guide rails of the stair lift is installed on the floors of the upper and lower floors of the stairs and on the landing, and the space in the width direction of the stairs is equipped with a carrier with a built-in electric motor. It is difficult to secure as wide as possible. Even if these spaces can be secured, since the stairs are a common space, the installation of the stair lift itself limits the passage of healthy persons who do not use the stair lift.

By the way, with the recent rapid aging of the population, the stair climbing of elderly people is becoming a social problem, and there is a strong demand for the installation of stair elevators for both public and private housing.

Further, recently, in the above-mentioned staircase type apartment house, an elevator (BL type) having a landing surface as a boarding / alighting surface is installed side by side in the staircase space. The stairs from the floor to the floors on the upper and lower floors where there is an entrance door to the living room are a big obstacle for people with walking disabilities, and it is desired to install a stair lift as an auxiliary machine.

In response to these demands, the conventional stair lift has the problem that the installation space tends to be large, as described above, which delays the installation.
Was one factor.

Therefore, according to the present invention, the stairs having a narrow installation space can be obtained by reducing the extension of the stairs to the floors of the upper and lower floors, the landing, etc., and reducing the space occupied in the width direction of the stairs. It is an object of the present invention to provide a stair lift that can be easily installed.

[0016]

The invention according to claim 1 is
A plurality of step portions (D1 to D6) provided between the upper floor (F2) and the lower floor (F1) and these step portions (D1 to D)
6) In a stair lift (10) installed on a stair (S) having a side wall (W) standing upright at one end of the stair elevator (10), the stair lift (10) is laid on the side wall (W), The normal inclined portions (11a, 12a, 13a) inclined corresponding to the inclination of the stepped portions (D1 to D6), and the normal inclined portion (1
1a, 12a, 13a) at the lower end of the normal inclined portion (11
a, 12a, 13a), a first guide rail (11, 12, 13) having a continuous steep slope (11b, 12b, 13b) with a larger inclination angle (β), and the first
The upper floor (F2) and the lower floor (F1) along the first guide rails (11, 12, 13) while being supported by the guide rails (11, 12, 13). And a normal moving part (11a, 1) of the first guide rail (11, 12, 13).
2a, 13a) has a moving region (15a) substantially parallel to the winding body (15) for moving the lifting body (14).
And drive means (16) for driving the winding body (15)
A second guide rail (17) arranged substantially parallel to the moving direction of the winding body (15) below the moving region (15a), and a second guide rail (17) with respect to the winding body (15). 1
Is swingably connected to the lifting body (14) by a second connecting portion (62), and the second guide rail ( 17)
A connecting member (18) movable along the connecting member (18), wherein the connecting member (18) is configured such that the elevating body (14) moves from the normal inclined portion (11a, 12a, 13a) to the steep inclined portion (1).
1b, 12b, 13b) and the second connection part (62) moves along the steep slope part (11b, 12b, 13b) together with the elevating body (14), the first connection part It is characterized in that the connecting portion (61) is formed so as to be held within a predetermined upper and lower vicinity in the moving direction of the winding body (15).

The invention according to claim 2 provides the stair lift (10) according to claim 1, wherein the connecting member (18) is provided.
Has a guide roller (56) which is rollable along the second guide rail (17) at a contact portion with the second guide rail (17).

The invention according to claim 3 is the stair lift (10) according to claim 2, wherein the connecting member (18) is provided.
From the guide roller (56) to the wrapping body (15)
A first arm (57) having a first connecting portion (61) at its tip and extending toward the guide roller (5).
6) and a second arm (58) extending downward along the second guide rail (17) and having the second connecting portion (62) at the tip thereof. The length (L1) of the arm (57) of said second arm (58)
It is characterized in that it is set shorter than the length (L2).

The invention according to claim 4 provides the stair lift (10) according to claim 3, wherein the first arm (5)
8), the elevating body (14) is the normal inclined portion (11).
a, 12a, 13a) to the steep slope (11b, 12)
b, 13b), the guide roller (5
It is characterized in that it crosses a perpendicular line (H) hung from 6) to the second guide rail (17).

The invention according to claim 5 relates to claims 1 to 4.
In the stair lift (10) according to any one of items
The winding body (15) is a drive chain (15) arranged endlessly.

The invention according to claim 6 relates to claims 1 to 5.
In the stair lift (10) according to any one of items
The elevating body (14) is attached to a side wall (W) side surface of the elevating frame (30) and a vertical plate-shaped elevating frame (30) substantially parallel to the side wall (W). A plurality of running rollers (31, 32, 33) rolling on the guide rails (11, 12, 13) and the stepped portions (D1 to D6) of the elevating frame (30).
A plurality of running rollers (31, 3) having a stool seat (34) and a foot cradle (35) attached to the side surface.
2, 33) and the stool seat (34) are arranged on the upper floor (F2) side of the elevating frame (30), and the footrest (35) is the elevating frame (3).
It is arranged on the lower floor surface (F1) side in 0).

The invention according to claim 7 is the stair lift (10) according to claim 6, wherein the foot cradle (35) is provided.
Means that the lifting body (14) is connected to the first guide rail (1
1, 12, 13) the normal inclined portion (11a, 12a,
When located at the ascending end (B) of 13a), it is adjacent to the upper floor (F2) at almost the same height, and the elevating body (14) has the first guide rails (11, 12, 13). When it is located at the descending limit (A) of the steep slope portion (11b, 12b, 13b), it is located at a height very close to the lower floor surface (F1).

The invention according to claim 8 is the stair lift (10) according to claim 6 or 7, wherein the foot cradle (3)
5) is formed in the shape of a plate and has a storage position overlapping the elevating frame (30) and the elevating frame (3).
It is characterized in that it is swingably supported by the elevating frame (30) so as to take a use position substantially perpendicular to 0).

The invention according to claim 9 relates to claims 6 to 8.
In the stair lift (10) according to any one of items
The stool seat (34) is formed in a plate shape, and has a storage position that overlaps the elevating frame (30) and a use position that is substantially perpendicular to the elevating frame (30). It is characterized in that it has a seat surface (36) that is swingably supported by (30) and that is rotatable with respect to the center of rotation in the up-down direction in the state of being disposed in the above-mentioned use position.

According to a tenth aspect of the present invention, in the stair lift (10) according to any one of the first to ninth aspects, the driving means (16) is arranged on the side wall (W). Is characterized by.

The reference numerals in parentheses in the above-mentioned "Means for Solving the Problems" are given to facilitate the comparison with the drawings, and the constructions of the invention are not limited by these reference numerals. Not something.

[0027]

According to the first aspect of the present invention, in the connecting member, the elevating body moves from the normal sloping part to the steeply sloping part, and the second connecting part moves along with the elevating body along the steeply sloping part. However, the first connecting portion is held in the vicinity of the predetermined upper and lower sides in the moving direction of the winding body. That is, since such a connecting member is interposed between the winding body and the elevating / lowering body, the first connecting portion between the winding body and the elevating / lowering body is located near a predetermined upper and lower part in the moving direction of the winding body. The second connecting portion can move along the normal inclined portion and the steep inclined portion having a larger inclination angle without any trouble while being held, that is, in a state where the second connecting portion does not largely deviate from the moving direction of the winding body. it can.

Thus, the fact that the second connecting portion can move along the normal inclined portion and the steep inclined portion without any trouble means that the entire lifting body can move along the normal inclined portion and the steep inclined portion without any trouble. It means that you can do it. Further, as described above, since the steep slope is provided so as to be continuous with the lower end of the normal slope of the first guide rail, there is no steep slope and the normal slope is extended downward as it is. Compared with the above, the horizontal length of the lower end side of the first guide rail in the horizontal direction can be shortened by the amount that the inclination angle of the steep inclination portion is set to be larger than the inclination angle of the normal inclination portion.

Therefore, for example, the steep slope of the first guide rail is positioned near the boundary between the lower floor of the stairs and the final step (the lowest step; the same applies hereinafter). By disposing it, the length of the portion of the first guide rail that projects toward the floor side of the lower floor can be shortened. It should be noted that the point that the elevating body can be landed on the floor of the lower floor without hindrance even when the above-described steeply inclined portion is provided will be described in detail in [Embodiment of the Invention] below.

According to the second aspect of the present invention, by providing the guide roller at the contact portion of the connecting member with the second guide rail, the winding body is moved and the lifting body is moved via the connecting member. In this case, the frictional force acting between the second guide rail and the connecting member can be reduced, and the movement of the lifting body can be made smooth.

Further, the connecting member oscillates when the elevating body moves along the steeply inclined portion. At this time, the above-mentioned guide roller serves as an oscillating center, and the first and second connecting portions are moved. It is possible to make the swinging motion of the device smooth. That is, the movement of the elevating / lowering body on the steep slope becomes smooth.

According to the third aspect of the present invention, by setting the first arm extending from the guide roller to the first connecting portion to be short, when the first arm swings about the guide roller, It is possible to reduce the movement amount (component) of the first connecting portion in the direction orthogonal to the moving direction of the winding body.

That is, the connecting member has the second structure because of its structure.
When the connecting portion of (1) moves along the steeply inclined surface, the first and second connecting portions relatively swing about the guide roller. The swinging motion of the first connecting portion at this time is decomposed into a component in the moving direction of the winding body and a component in the direction orthogonal to the moving direction (hereinafter referred to as “deviation amount”). This shift amount is a component in which the first connecting portion tends to deviate from the moving direction of the winding body, and is preferably not generated. According to the invention of claim 3, as described above, by shortening the first arm, it is possible to suppress the deviation amount to be small. Accordingly, it is possible to reduce the transmission loss of the power transmitted from the winding body to the lifting body via the connecting member.

Further, by setting the first arm to be short as in the present invention, the distance from the winding body to the second guide rail and the distance from the winding body to the second connecting portion are set. Therefore, the direction of the force acting on the elevating body from the connecting member at the second connecting portion can be made closer to the moving direction of the winding body. This also makes it possible to reduce power transmission loss.

According to the fourth aspect of the invention, the above-mentioned shift amount can be further reduced as compared with the case where the first arm does not cross the perpendicular line hung from the guide roller. Ie. When the angle from the start to the end of the swinging of the connecting member (hereinafter referred to as the “swinging angle”) is constant, the first connecting portion moves from the guide roller to the second end during the swinging motion. When a vertical line (same as the vertical line with respect to the moving direction of the winding body) hung on the guide rail is sandwiched and the line is moved from one side to the other side over the vertical line, the above-mentioned shift amount is reduced.

It should be noted that when the first arm is swung by the same angle with the above-described perpendicular line interposed, in other words, the first arm is oscillated.
By locating the above-mentioned vertical line at the center of the swing range of the arm, the amount of deviation can be further reduced.

According to the fifth aspect of the invention, an endless drive chain is used as the winding body. Generally, a belt, a wire rope, or the like is provided outside the drive chain as the winding body. However, in the present invention, a relatively large force acts on the winding body, and the moving path of the winding body is relatively simple. Considering that the winding body is used for a long period of time, the deterioration with time is small, and the maintenance is free, it is preferable to use the drive chain as the winding body.

According to the invention of claim 6, the lifting body is
Since a stool seat and a foot pedestal are attached to the step side (front surface side) of the vertical plate-shaped lifting frame, the user can use the foot pedestal to get on and off the elevator body, and also the stool seat Can be seated on.

Further, since the elevating body is provided with a plurality of running rollers rolling on the first guide rail on the side wall side (back surface side), it is possible to move along the first guide rail. You can

Further, in the lifting body, the stool seat is arranged on the upper floor side of the lifting frame, and the footrest is arranged on the lower floor surface side of the lifting frame, so that the user sits down. You can take a sitting posture facing the bottom of the stairs by sitting on the table and placing your feet on the foot cradle. Therefore, it is possible to reduce the space occupied on the step portion side as compared with the case where the sitting posture is performed with the side wall as the back and the foot is directed to the step portion side.

As in the sixth embodiment, when the plurality of running rollers of the lifting body are attached to the floor side of the upper floor, the first guide rails for guiding the running rollers are located on the floor side of the upper floor. The amount of protrusion is small, while the amount of protrusion tends to be large on the floor side of the lower floor.

However, in the present invention, as described above, since the steeply inclined portion is provided on the lower end side of the first guide rail, the traveling roller is provided on the upper floor side as in the sixth embodiment. Even in the case of, the amount of protrusion of the first guide rail to the floor side of the lower floor can be reduced.

According to the seventh aspect of the present invention, the footrests of the lifting body are adjacent to each other at substantially the same height as the floor of the upper floor when the lifting body is located at the upper limit, so that the stool is seated on the upper floor. Since it is located above the surface, the user can
By rotating to the step side by 0 degree or more, it is possible to move one's own foot onto the floor of the upper floor and easily get off the elevator body. When the user gets on the elevator body on the floor of the upper floor, the user can easily get in by operating in reverse.

According to the inventions of claims 8 and 9,
When using the lifting body, the user can mount the lifting body using the foot cradle and stool by swinging the foot cradle and stool to move from the storage position to the use position. . On the other hand, when the user does not use the elevating body, the foot cradle and the stool are swung to move from the use position to the storage position. As a result, since the plate-shaped foot cradle and the stool seat overlap the vertical plate-shaped lifting frame, they hardly project to the step portion side. There is no such thing.

According to the tenth aspect of the present invention, since the driving means is arranged on the side wall, unlike the conventional case, the lifting body does not need to have the driving means. As a result, the structure of the lifting body can be simplified and made compact,
This also prevents the lifting body from interfering with the person who moves up and down the step.

[0046]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals in the drawings denote the same configurations or operations, and repeated description thereof will be omitted as appropriate.

<Embodiment 1> First, with reference to FIGS. 1 to 4, an example of stairs to be installed (installation destination) of the stair lift according to the present invention will be described. Here, Fig. 1 shows the stairs S
FIG. 4 is a view of the side wall W of FIG. 1 viewed from a direction facing the side wall W (hereinafter referred to as “front view”). 2, FIG. 3, and FIG. 4 are, in this order, an X-ray arrow view in FIG. 1 (hereinafter referred to as “lower side view”), a Y-line arrow view (hereinafter referred to as “top view”), and Z. It is a line arrow view (henceforth "upper side view"). In addition,
In these figures, in addition to the stairs S, a stair lift 10 to be described later is provided.
The first guide rails 11, 12, 13 and so on are shown.

The stairs S shown in FIGS. 1 to 4 are so-called folded stairs. This staircase S has a lower floor surface F1 located below, an upper floor surface F2 located above, and a plurality of step portions D1 to D6 provided therebetween (for the entire step portion, And a side wall W provided upright at one end in the width direction of the step D (the right end of the step D in FIG. 2). The stairs S shown in these figures
In FIG. 3, as shown in FIG. 3, when going down the step D in the direction of arrow A1 from the upper floor F2 to reach the lower floor F1, and further descending the stairs S, the direction of arrow A2 is 180 degrees. Will be changed and descend the stairs S. Conversely, the lower floor F
When going up the stairs D in the direction of arrow B1 from 1 to reach the upper floor F2, and further going up the stairs S, the direction of arrow B2 is 18
It turns 0 degrees and goes up the stairs S. 1 to 4
As shown in FIG. 1, the slope of the stairs S shown in FIG.
The inclination angle α is formed by the plane SA that passes through the top of ~ D6 and the lower floor F1.

Next, with reference to FIGS. 5 to 7, a schematic structure of the stair climber 10 according to the first embodiment will be described as an example of the stair climber according to the present invention. Here, FIG. 5 is a front view of the entire stair lift 10, FIG. 6 is a view taken along the line X in FIG. 5 (lower side view), and FIG. 7 is a view taken along the line Y in FIG. 5 (top view).
Is. That is, FIGS. 5, 6 and 7 correspond to FIGS. 1, 2 and 3 described above in this order. In addition, stair lift 1
0 is arranged between the lower floor F1 and the upper floor F2, and between the lower floor F1 and a floor (not shown) located further below it, or on the upper floor. It is assumed that it is also arranged between the floor surface F2 and a floor surface (not shown) located further above it.

As shown in FIGS. 5 to 7, the stair lift 10
Are the three first walls laid in order from the top on the side wall W of the stairs S.
Of the guide rails 11, 12, and 13, and the elevating body 14 movable along the first guide rails 11, 12, and 13 between the upper floor F1 and the lower floor F2, A drive chain 15 as a winding body arranged between the guide rails 12 and 13, a drive means 16 arranged on the upper floor F2 side to drive the drive chain 15, and a drive chain 1.
Second guide rail 17 disposed below 5 (however, in the present embodiment, a part of first guide rail 13 is also used as second guide rail 17), lifting body 14 and drive And a connecting member 18 for connecting the chain 15. In FIGS. 5, 6 and 7, the elevating body 14 is shown in a solid line when it is arranged substantially in the middle of the step D, and in FIGS.
The ascending / descending body 14 (A) in the state of being arranged in the upper part and the ascending / descending body 14 (B) in the state of being arranged in the ascending limit B are shown by a two-dot chain line.

Hereinafter, the first guide rails 11, 12, 1 will be described.
3, the lifting body 14, the drive chain 15, the drive means 16, the second guide rail 17, and the connecting member 18 will be described in detail in this order.

The first guide rails 11, 12, 13 are
As shown in FIGS. 1 to 4, it is laid on the side wall W. On the side of the upper floor F2 of the side wall W, a box-shaped stand 20 accommodating the drive means 16 is arranged, and also the lower floor F of the side wall F.
On the first side, a box-shaped stand 21 accommodating a drive means 16 for a stair lift (not shown) installed below this.
Are arranged. Further, between the stands 20, 21 on the side wall W, three mounting stays 22, 23, 24 oriented in the vertical direction are fixed.

FIG. 8 shows the first guide rails 11, 12,
It is a front view which expanded a part of 13 grade. FIG. 9 is a view taken along the line CC of FIG. As shown in FIG. 9, the above-mentioned stand 20, mounting stays 22, 23, 24, and stand 21 are fixed along with the first guide rails 11, 12, 13 and fixed members 25, 26 for holding them. , 2
7 is fixed. Of these, the fixing members 25 and 27
Is formed by a rod-shaped member having a quadrangular cross section, and fixes the side wall W side portion of the first guide rails 11 and 13. On the other hand, the fixing member 26 is
It is formed by an angle member having an L-shaped cross section, and supports a lower portion of the first guide rail 12 from below.

The first guide rails 11, 12, 13 are
As shown in FIG. 9, it is formed of a hollow cylindrical pipe-shaped member. First guide rails 11, 12, 1
As shown in FIG. 14 (enlarged view of partial judgment of the first guide rails 11, 12, 13 etc.), 3 is the normal inclined portions 11a, 12a, 13a provided on the upper end side and their lower ends. Has steep slopes 11b, 12b, and 13b continuous with each other. The inclination angles of the normal inclined portions 11a, 12a, 13a are set to be the same as the inclination angle α of the step D described above. Further, the steeply inclined portions 11b, 12b, 13b are set to have an inclination angle β larger than the inclination angle α of the normal inclined portions 11a, 12a, 13a. As shown in FIG. 1, the steeply inclined portions 11b and 13b of the first guide rails 11 and 13 are located in the vicinity of the boundary with the step D1 on the lower floor F1. Also, the steep slope 1 of the first guide rail 12
2b is located above the step D1. And, of these steeply inclined portions 11b, 12b, 13b, the protruding amount of the first guide rail 11 protruding most toward the floor floor F1 side is L. In the present embodiment, as described above, by providing the steeply inclined portions 11b, 12b, 13b on the lower end side of the first guide rails 11, 12, 13 as compared with the case where these are not provided, The protrusion amount L is configured to be small. The protrusion amount L will be described in detail later with reference to FIG.

A perspective view of the lifting body 14 is shown in FIGS. However, FIG. 10 shows the time of use (state in which the stool seat 34 and the foot cradle 35 are pulled out), and FIG. 11 shows the time of non-use (state in which the stool seat 34 and the foot pedestal 35 are folded). 12 (a), (b), and (c) show a front view, a right side view, and a top view, respectively, when the elevating body 14 is used.
Further, FIGS. 13A, 13B, 13C, and 13D show a front view, a right side view, a top view, and a left side view, respectively, when the elevator 14 is not used.

As shown in FIGS. 10 to 13 and FIG. 5, the lifting / lowering body 14 is a vertical plate-shaped lifting frame 30 substantially parallel to the side wall W, and a surface of the lifting / lowering frame 30 on the side wall W side ( Three traveling rollers 31, 32, 33 which are attached to the rear surface side) and roll on the above-mentioned first guide rails 11, 12, 13 and a surface (front surface side) of the step frame D side of the elevating frame 30. Has a stool seat 34 and a foot cradle 35 attached thereto.

Further, the stool seat 34 is formed in a plate shape, and as shown in FIG. 11, a storage position overlapping the upper concave portion 30b of the elevating frame 30 and, as shown in FIG.
It is swingably supported by the elevating frame 30 so as to assume a use position substantially perpendicular to the elevating frame 30. The stool seat 34 further has a seat surface 36 that is rotatable with respect to the center of rotation in the vertical direction when the seat 34 is placed in the use position shown in FIG.

Further, the foot pedestal 35 is formed in a plate shape, and as shown in FIG. 11, the storage position overlapping the lower recess 30c of the elevating frame 30 and the elevating frame 30 as shown in FIG. It is swingably supported by the elevating frame 30 so as to assume a substantially right-angled use position.

At the upper end of the elevating frame 30 described above, a handrail member 37 formed in a U shape by a rod-shaped member is arranged. The handrail member 37 is swingably supported by the elevating frame 30 so as to take the storage position shown in FIG. 11 and the use position shown in FIG. The handrail member 37 has a backrest portion 37a, an armrest portion 37b, and a handrail portion 37c. At the tip of the backrest portion 37a described above, there is provided a locking tool 40 with which the tip of the retractable seat belt 38 pulled out from the upper recess 30b of the elevating frame 30 can be engaged and disengaged. Further, an ON / OFF switch 41 and an elevating switch 42 are arranged on the upper part of the elevating frame 30 on the lower floor side F1 side. Further, a partition 43 is erected on the upper end of the elevating frame 30.

The stool seat 34, the foot rest 35, and
An interlocking relationship is established with the handrail member 37. That is, a shaft 44 is provided integrally with the base end portion of the stool seat 34, and this shaft is fixed to the base end portion of the arm 45. An upper end and a lower end of a link 46 are rotatably connected to the tip of the arm 45 and a part of the foot support 35, respectively. Furthermore, the arm 45
Between the tip of the and the right recess 30d of the elevating frame 30
The gas spring 47 is obliquely interposed to reduce the manual opening / closing force. . In this way, the interlocking relationship is set between the stool seat 34 and the foot cradle 35. The interlocking relationship is set between the seat 34 and the handrail member 37 by a similar mechanism (not shown). Therefore, the seat 34, the footrest 35, and the handrail member 37
By opening / closing any one of the two, the other two can be similarly opened / closed.

The positional relationship between the stool seat 34 and the foot cradle 35 described above is such that the former stool seat 34 is located on the upper floor floor F2 side and the latter stool seat 35 is located on the lower floor floor F1 side. It has become.

The running rollers 31, 32 and 33 are shown in FIG.
As shown in FIGS. 13A and 13A, both are on the side wall W side (back surface side) of the elevating frame 30 and on the upper floor F.
It is rotatably attached to the lower half of the second side. As shown in FIG. 9, these running rollers 31, 32, 33 are provided with arcuate concave portions on their outer peripheral surfaces. These running rollers 3
Of the 1, 32, 33, the traveling roller 31 is shown in FIG.
As shown in FIG. 1, it rolls along the lower part of the first guide rail 11. Further, the traveling rollers 32 and 33 are adapted to roll along the upper portions of the first guide rails 12 and 13, respectively. By arranging the three traveling rollers 31, 32, and 33 in this way, the posture of the elevating body 14 can be stably maintained.

The drive chain 15 includes a first guide rail 12 and a first guide rail 13 as shown in FIG.
It is arranged between and. In addition, FIG. 14 shows the first guide rails 11, 12, 13 and the traveling rollers 31, 32,
33, the drive chain 15, the drive means 16, the second guide rail 17, and the connecting member 18 are shown in a positional relationship, and other members and the like are omitted for convenience of description. The drive chain 15 is formed in an endless shape and includes a drive sprocket 50 and driven sprockets 51, 5
2, and the tension sprocket 53 is engaged from the outside. Further, in the drive chain 15, a portion located below between the driven sprockets 51 and 52 (hereinafter referred to as "moving region 15a") is the above-mentioned first portion.
Of the guide rails 11, 12, 13 of the normal inclined portion 11a,
It is substantially parallel to 12a and 13a. In the traveling area 15a of the drive chain 15, the end portion on the upper floor surface F2 side substantially coincides with the upper ends of the first guide rails 11, 12, and 13, and the end portion on the lower floor surface F1 side is the first end. Guide rail 1
It almost coincides with the lower end of 1.

The drive chain 15 is shown in FIG. 9 and FIG.
As shown in FIG. 8 (viewed from the line D-D in FIG. 8), almost the whole is covered with the case 54, and an opening 54 a is formed in a part of the lower part. The opening 54a is a portion through which the first arm 57 of the connecting member 18, which will be described later, penetrates.
By covering the entire drive chain 15 with the case 54 in this manner, the drive chain 15 arranged along the side wall W is prevented from being exposed to the step D side for safety. In the present embodiment, as the drive chain 15,
A 2-way chain is used.

As shown in FIGS. 1 to 4, the driving means 16 is housed in a stand 20 disposed on the upper floor surface F2 on the side wall W on the upper floor surface F2 side. The drive means 16 has an electric motor with a built-in brake and a reduction gear, and the drive sprocket 50 fixed to the output shaft thereof, and drives the drive chain 15 to move it. At the top of the stand 20,
A control panel (not shown) is built in, and the stand 20
An operation switch and an operation switch (not shown) for calling in and returning the elevating body 14 are provided outside the.

The second guide rail 17 is arranged below the moving area 15a of the drive chain 15 and substantially parallel to the moving direction of the drive chain 15. In the present embodiment, the second guide rail 17 is the normal inclined portion 13a that is a part of the first guide rail 13 described above.
Is used to simplify the configuration.

As shown in FIGS. 8, 16 and 17, the connecting member 18 has a main body 55 formed in a substantially L shape and a guide roller 56 rotatably supported by the top of the main body 55. ing. A cover 55a that covers the upper half of the guide roller 56 in a substantially half-moon shape is formed near the top of the main body 55. The main body 55 includes a first arm 57 extending from the center 56 a of the guide roller 56 toward the drive chain 15, and a second arm 57 extending downward from the center 56 a of the guide roller 56 along the second guide rail 17.
Arm 58 of the. The first arm 57 described above
A chain connecting link 59 is swingably attached to the tip of the pin by a pin that passes through in common. At both ends of the chain drive link 59, the above-mentioned drive chain 1
Five links are connected. The connecting portion between the drive chain 15 and the tip of the first arm 57 is referred to as the first connecting portion 6
Set to 1. On the other hand, at the tip of the above-mentioned second arm 58,
The pin member 63 fixed to the rear surface side of the elevating frame 30 of the elevating body 14 is swingably connected. A connecting portion between the lifting body 14 and the second arm 58 is referred to as a second connecting portion 62.

In the present embodiment, the first of the main body 55
The length L1 of the arm 57 is equal to the length L of the second arm 58.
It is set shorter than 2. In addition, the guide roller 56
Is adapted to roll on the upper surface of the above-mentioned second guide rail 17 as the drive chain 15 moves.

In the above-mentioned connecting member 18, as shown in FIG. 14, the three traveling rollers 31, 32, 33 are the normal inclined portions 11a, 12a of the first guide rails 11, 12, 13, respectively.
While moving on 13a, that is, while the lifting body 14 is normally guided by the inclined portions 11a, 12a, 13a, with respect to the perpendicular line H hung from the center 56a of the guide roller 56 to the second guide rail 17. The angle is θ1 in the counterclockwise direction. On the other hand, the three traveling rollers 31, 32, 33 are connected to the first guide rail 1
When located at the lower end of the steeply inclined portions 11b, 12b, 13b of 1, 12, 13, that is, when the elevating body 14 reaches the lowering limit A of the first guide rails 11, 12, 13,
An angle of θ2 is set in a clockwise direction with respect to a perpendicular line H to the second guide rail 17. That is, the elevating / lowering body 14 descends along the normal inclined portions 11a, 12a, 13a, and further the steep inclined portions 11b, 12b, 13b.
The first arm 57 swings relatively clockwise around the center 56a of the guide roller 56 as a swing center by the time when the first arm 57 descends along and reaches the lower limit A. At this time, the first arm 57 is configured to cross the perpendicular line H described above.

Next, the operation of the stair climbing machine 10 having the above-described structure will be described with some actions and effects.

As shown in FIG. 14, the first guide rails 11, 12, 13 have steep slopes 11b, 1 on the lower end side thereof.
Since it has 2b and 13b, such a steep slope 1
Compared with the case without 1b, 12b, 13b, the first guide rails 11, 12, 1 for the lower floor F1
3, the protrusion amount L of the first guide rail 11 can be reduced in the present embodiment. That is, the transport body 14 is located at the lower limit A and the traveling roller 3
When 1 is located at the lower end of the steeply inclined portion 11b of the first guide rail 11, its center is located at E1. On the other hand, as in the case of the conventional technique, when the normal inclined portion continues without having the steep inclined portion, when the conveyance body 14 is positioned at the lower limit thereof, the center of the center of the traveling roller is E2. Located in. Therefore, the protrusion amount of the first guide rail 11 can be reduced by the distance L3 corresponding to the difference between E2 and E1.

Further, in the present embodiment, it is possible to reduce the occupied space in the width direction of the step D when the carrier 14 is not used. That is, in the past, since the electric motor was provided in the carrier body 14 itself, the carrier body 14 is accordingly provided.
However, the occupied space in the width direction of the step D was large. On the other hand, in the present embodiment, as shown in FIGS. 1 to 4, since the driving means 16 (electric motor) is arranged on the side wall W side, the space occupied by the carrier 14 can be reduced.

Further, the elevating frame 30 of the carrier 14,
The stool seat 34 and the foot rest 35 are formed in a plate shape, and the handrail member 37 is formed in a bar shape. When the carrier 14 is not used, the stool seat 34 is placed in the upper recess 30b and the lower recess 30c of the carrier 14, respectively. Since the foot cradle 35 is housed and the handrail member 37 is flipped up in an upright posture, the carrier 14 as a whole is, for example, as shown in FIGS. 11, 13B, 13C and 13D.
As shown in FIG. This also makes it possible to reduce the space occupied by the carrier 14. The above-mentioned stool seat 34 and foot stand 3
6. Since the handrail member 37 has an interlocking relationship, the other two opening / closing operations can be easily performed at the same time only by opening / closing one of them.

The stool seat 34 and the foot cradle 35 are shown in FIG.
0, when it is placed in the use position as shown in FIG. 12, the stool seat 34 is placed on the upper floor surface F2 side and the footrest 35 is placed on the lower floor surface F1 side. When the user sits down and puts his / her foot on the foot cradle 35, the user at that time faces the lower floor F1 with the upper floor F2 as the back. Therefore, with the side wall W side as a back,
Compared with the case of facing the step D side, the protrusion to the step D side can be reduced. Therefore, of the step D,
It is possible to secure a large space for a portion that can be used by a healthy person to move up and down.

Since the seat surface 36 of the stool seat 34 is configured to be rotatable, the user can easily turn in any direction when getting off the elevating body 14, as shown in FIG. The safety when getting off can be improved.

As shown in FIG. 19, the user carries the carrier 14
When the user gets on the vehicle, the user is surrounded by the handrail member 37 on three sides and the seat belt 38 on the other side, so that the safety during use is extremely high.

Next, a case where the user gets on the elevator 14 on the floor F2 of the upper floor, descends the step D, and descends on the floor F1 of the lower floor will be described as an example.

As shown in FIGS. 5 and 18, the carrier 14 is
It is placed at the upper limit (B in FIG. 5) and the seat 34 and the like are pulled out. At this time, the traveling rollers 31, 3 of the carrier 14 to be guided by the first guide rails 11, 12, 13
2, 33 and the seat 34 are arranged on the upper floor F2 side of the elevating frame 30, so that the traveling roller 3
By disposing 1, 32, 33 near the end of the upper floor F2 on the step D side, the stool seat 34 can be arranged above the upper floor F2. At this time, the footrest 35 is
It is located above the uppermost step D6 and at substantially the same height as the upper floor F2.

The user sits down on the seat 34 with the side wall W facing toward the step D, and then the seat surface 36 is rotated 90 degrees as shown in FIG. Floor F1
The seat belt 38 is fastened with the side facing.

When the user presses the elevating switch 42, the drive means 16 causes the drive chain 15 to move to the arrow K in FIG.
Direction, the traveling rollers 31, 32, 33 are moved to the first position.
Of the guide rails 11, 12, 13 of the normal inclined portion 11a,
The guide roller 56 rolls on the second guide rail 17 (normally the same as the inclined portion 13a) along the rollers 12a and 13a, and the carrier 14 descends.

As the descent progresses, the traveling rollers 31, 32,
When 33 starts to move along the steeply inclined portions 11b, 12b, 13b, the second connecting portion 62 of the connecting member 18 that has been moving in the same direction as the moving direction of the drive chain 15 until then.
However, the connecting member 18 gradually moves away from the drive chain 15, and the connecting member 18 swings clockwise around the center 56a of the guide roller 56. Then, the traveling rollers 31, 32, 33 reach the lower ends of the steeply inclined portions 11b, 12b, 13b, and the guide roller 56 is the lower end of the second guide rail 17 (the lower end of the normal inclined portion 13a of the first guide rail 13). When it reaches, the carrier 14 reaches the lower limit A.

As shown in FIG. 5, the carrier 14 is at the lower limit A
When this is reached, for example, this is detected by a sensor (not shown), the driving means 16 is stopped, and the carrier 1
4 stops. At this time, as shown in FIG. 5, the footrest 35 has a height extremely close to the floor F1 of the lower floor. The user folds the seat 34 or the like and places it in the storage position.
Then, the carrier 14 is moved to an intermediate portion of the step D, which does not interfere with the transportation.

In the present embodiment, since the length of the first arm 57 of the connecting member 18 is set shorter than the length of the second arm 58, the connecting member 18 swings. Even if the second connecting portion 62 is separated from the drive chain 15, the first connecting portion 61 does not largely deviate from the moving direction of the drive chain 15. Further, since the first arm 57 is configured to cross the perpendicular line H by the swinging motion of the connecting member 18, this also further increases the distance from the moving direction of the drive chain 15 of the first connecting portion 61. The amount of deviation can be reduced.

In principle, the shorter the length of the first arm 57, the second connecting portion 62 of the connecting member 18.
It is possible to reduce the power transmission loss by bringing the direction of the force acting on the elevating body 14 through the direction of movement closer to the moving direction of the drive chain 15. However, if it is necessary to set the first arm 57 to an appropriate length for the reason that the drive chain 15 is housed in the case 54 to improve safety, etc., the minimum length should be set to the necessary minimum. Good.

In the present embodiment, the three traveling rollers 31, 32, 33 are normally inclined portions 11a, 12a, 13.
When it is a, these rollers can support the weight of the lifting body 14 and maintain its posture in a good condition.
However, when the three traveling rollers 31, 32, 33 are located on the steeply inclined portions 11b, 12b, 13b, the guide roller 56 of the connecting member 18 that is normally left on the inclined portion 13a.
A large force will act on. Therefore, the guide roller 56 as described above is attached to the connecting member 18 moving along the second guide rail 17 in the state where a large force is applied.
To provide the second guide rail 17 and the connecting member 1.
The frictional force acting between the connecting member 18 and
As a result, it is extremely effective for moving the lifting body 14 smoothly.

In the above embodiment, the second
Although the guide rails 17 of FIG. 2 are diverted from a part of the first guide rails 13 (usually the inclined portions 13a) to simplify the structure, it goes without saying that they may be provided individually. In this case, the first guide rails 11, 12, 1
The degree of freedom regarding the arrangement position of 3 is increased. That is, as long as the first guide rail supports the weight of the lifting body 14 and can move smoothly while the lifting body 14 maintains its posture, the first guide rail and the second guide rail 17 have a special position. It can be arranged at any position without any relation.

[Brief description of drawings]

FIG. 1 is a front view of a stairway in which a stair lift is installed.

FIG. 2 is a view on arrow X in FIG.

FIG. 3 is a view taken in the direction of the arrow Y in FIG.

FIG. 4 is a view taken along line Z in FIG.

FIG. 5 is a front view of a stair lift.

6 is a view taken in the direction of the arrow X in FIG.

FIG. 7 is a view taken in the direction of the arrow Y in FIG.

FIG. 8 is a partially enlarged view of a first guide rail, a second guide rail, a drive chain, and a connecting member.

9 is a view taken along the line CC of FIG.

FIG. 10 is a perspective view of the carrier when in use.

FIG. 11 is a perspective view of a carrier when it is not used.

12 (a), (b), and (c) are a front view, a side view, and a top view of a carrier at the time of sequential use.

13 (a), (b), (c), and (d) are a front view, a right side view, a top view, and a left side view of the carrier in sequence when not in use.

FIG. 14 is a first guide rail, a second guide rail,
It is a figure explaining the positional relationship of a drive chain, a drive means, and a connection member.

15 is a view taken along the line DD of FIG.

FIG. 16 is an enlarged front view of a connecting member.

FIG. 17 is an enlarged top view of a connecting member.

FIG. 18 is a perspective view showing how the user gets on and off the carrier on the floor of the upper floor.

FIG. 19 is a perspective view showing how the user gets in.

[Explanation of symbols]

10 Stair Elevators 11, 12, 13 First Guide Rails 11a, 12a, 13a Normal Inclined Parts 11b, 12b, 13b Steep Inclined Parts 14 Elevating Body 15 Winding Body (Drive Chain) 15a Moving Area 16 Driving Means 17 Second Guide rail 18 Connecting member 30 Elevating frames 31, 32, 33 Traveling roller 34 Sit seat 35 Foot rest 36 Seat surface 55 Main body 56 of connecting member Guide roller 57 First arm 58 Second arm 61 First connecting portion 62 2nd connection part A Lower limit B Upper limit D, D1-D6 step part (In addition, D shows the whole step part.) F1 Lower floor surface F2 Upper floor surface L First guide for lower floor surface Rail protrusion L1 Length of first arm L2 Length of second arm H Vertical line W Side wall α Inclination angle of normal slope β Inclination angle of steep slope

Claims (10)

[Claims] 1. A staircase having a plurality of steps provided between an upper floor surface and a lower floor surface and a side wall standing upright at one end of these steps. In a stair climber, a normal sloping portion that is laid on the side wall and is inclined corresponding to the slopes of the plurality of steps, and a continuous steep portion at the lower end of the normal sloping portion with a larger inclination angle than the normal sloping portion. A first guide rail having an inclined portion, and movable between the upper floor and the lower floor along the first guide rail while being supported by the first guide rail. A lifting body, a winding body for moving the lifting body, the winding body having a movement region substantially parallel to the normal inclined portion of the first guide rail, a driving unit for driving the winding body, and the moving body. Below the region, the first member arranged substantially parallel to the moving direction of the winding body Of the guide rail and the winding body at a first connecting portion so as to be swingable, and at the elevating body at a second connecting portion so as to be swingable. A connecting member movable along the guide rail of No. 2; and in the connecting member, the elevating body moves from the normal inclined portion to the steep inclined portion, and the second connecting portion together with the elevating body. Even when moving along the steep slope, the first
The stair lift is characterized in that the connecting portion is formed so as to be held within a predetermined upper and lower vicinity in the moving direction of the winding body. 2. The connecting member has a guide roller that is rollable along the second guide rail at a contact portion with the second guide rail. Stair lift. 3. The connecting member includes a first arm extending from the guide roller toward the wrapping body and having the first connecting portion at a tip thereof, and the guide roller to the second arm.
A second arm that extends downward along the guide rail and has the second connecting portion at the tip, and the length of the first arm is greater than the length of the second arm. The stair lift according to claim 2, wherein the stair lift is set to be short. 4. The first arm crosses a perpendicular line hung from the guide roller to the second guide rail when the elevating body moves from the normal inclined portion to the steep inclined portion. The stair lift according to claim 3, which is characterized in that. 5. The stair lift according to claim 1, wherein the winding body is a drive chain arranged endlessly. 6. The elevating body is a vertical plate-shaped elevating frame that is substantially parallel to the side wall, and a plurality of elevating frames that are attached to a surface of the elevating frame on the side wall side and roll on the first guide rail. A traveling roller and a stool seat and a foot pedestal attached to the surface of the step frame side of the elevating frame are provided, and the plurality of traveling rollers and the stool seat are on the upper floor side of the elevating frame. The stair lift according to any one of claims 1 to 5, wherein the foot pedestal is arranged on the lower floor side of the elevating frame. 7. The foot pedestal is such that the lifting body is the first
Of the guide rail is located at the upper limit of the normal inclined portion, is adjacent to the upper floor surface at substantially the same height, and the elevating body is located at the lower limit of the steep inclined portion of the first guide rail. The stair lift according to claim 6, wherein the stair lift is located at a height extremely close to the floor surface of the lower floor when the stairs are moved. 8. The foot cradle is formed in a plate shape, and has a storage position overlapping the elevating frame and a use position substantially perpendicular to the elevating frame.
The stair lift according to claim 6 or 7, wherein the stair lift is swingably supported by the lift frame. 9. The stool seat is formed in a plate shape and is swingable by the elevating frame so as to have a storage position overlapping the elevating frame and a use position substantially perpendicular to the elevating frame. The stair lift according to any one of claims 6 to 8, wherein the stair lift has a seat surface that is supported by the seat and is rotatable in the vertical direction about the center of rotation in the state of being disposed in the use position. . 10. The stair lift according to claim 1, wherein the driving means is arranged on the side wall.