JP2684588B2 - Chair type stair lift - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair type stair lift.

[0002]

2. Description of the Related Art An example of a conventional chair-type stair lift is shown in FIG. The chair-type stair lift 120 has a sprocket that is rotated by a rotation driving body (not shown) built into a chair body 123 that is screwed into a chain 130 attached to a rail 122 fixed to a support 128 at an end of a stair 127. Go up and down through. Reference numeral 124 is a seat fixed on a rotatable chair body 123, 129 is a backrest and a pair of armrests attached to both sides of the 121, 126a is a start button, 126b is an emergency stop button, 1
Reference numeral 25 is a rotatable foot step. Further, the armrest 129, the seat 124 and the footstep 125 can be bent toward the wall side.
The chair-type stair lift 120 can be stored without disturbing the stairs. And, the chair type stair lift 120 having the above-mentioned configuration,
By pressing the start button 126a, the rotary drive body rotates and moves up and down via the chain 130.

[0003]

Since the chair-type stair lift having the above-mentioned structure uses a chain, it is not economically efficient due to wear of the chain. Also, 2 chair stair lifts
When going up and down to the third and third floors in a straight line (specific angle),
Although the conventional structure may be used, it is difficult to attach a chain and the chair angle is not flat on a staircase where a horizontal landing is provided between the second and third floors. That is, the angle of the chair is attached so as to maintain horizontal with respect to the angle at the specific inclination, so that when the chair-type stair lift itself is in the horizontal state, the chair is in the inclined state. Therefore,
The present invention provides a chair-type stair lift that always keeps the chair in a horizontal state even if the chair is lifted and lowered at an arbitrary angle.

[0004]

A chair-type stair climber according to claim 1.
The dismounting is the upper rotary shaft attached to the base 3 with the seat fixed.
8, the upper oscillating body 4a, and the lower rotary shaft 9 the lower oscillating body 4b.
It is rotatably attached and the upper guide body 14a and
And lower guide body 14b are installed and attached to the base 3
The rolling shaft 8 has a first upper roller on the upper side of the upper guide body 14a.
10 is rotatably provided and is inclined with respect to the first upper roller.
The lower guide body 1 is attached to the lower rotary shaft 9 attached to the base 3 at the position.
The second upper roller 12 on the upper side of 4b is rotatably provided,
A first lower side of the upper guide body 14a is attached to the upper swing body 4a.
The lower roller 11 is attached to the lower swing body 4b and the lower guide body 14b.
The second lower roller 13 on the lower side of the
Elasticity for pressing the upper rocking body 4a and the lower rocking body 4b against each other
First upper roller 10 and first lower roller 11 via body 16
The upper guide body 14a with the second upper roller 12 and the second lower roller.
The lower guide body 14b can be sandwiched by the la 13, and the first upper
Roller 10, first lower roller 11, second upper roller 12,
2 Drive for rotating at least one of the lower rollers 13
The body 5 is provided, and the side of the lower guide body 14b (of the second upper roller) is provided.
Side roller 1 that can slide and rotate in the vertical direction of the mounting position)
5 is provided. Further, the chair type staircase of claim 2.
In the elevator, the side rollers 15 are made of synthetic resin and are cylindrical or
Is formed in a columnar shape. The chair type of claim 3
The stair lift has a first upper roll that rotates on the upper guide body 14a.
The first upper roller that moves up and down via the roller 10 and is split left and right
An eccentric rotating body whose axis is eccentric between 10a and 10b.
20 with the upper guide body 14a with a slight gap
8 so that it can be idled, and the support 27 is idled on the upper rotary shaft 8.
It is mounted so that it can rotate, and an eccentric rotation is made through the connecting rod 22.
It is connected to the rolling element 20 and is composed of a square rotating body 21 and a claw 28a.
Stop body 28 is fixed to the upper rotary shaft 8 side by side, and L-shaped rotation
The lever 24 is rotatably attached to the connecting rod 22, and
Square I by the spring 29 to the other end of the bar 24 rotating body 2
While the slidable detection roller 23 is attached to the ridge of 1,
The end can maintain a position where it can not be locked to the claw 28a when normal.
It has an emergency stop mechanism.

[0005]

The chair type stair lift according to claim 1 is fixed to the base 3.
Rotatably attached to the upper rotary shaft 8 and the lower rotary shaft 9, respectively.
The upper oscillating body 4a and the lower oscillating body 4b are connected to each other via the elastic body 16, and the first upper roller 10 and the second upper roller 12 are attached to the inclined position, so that the elastic body 16 is elastically moved. The upper guide body 14a and the lower guide body 14b, which are attached at arbitrary intervals by the force, are combined with the upper guide body 14a by the first upper roller 10 and the first lower roller 11 attached to the upper rocking body 4a. On the other hand, the lower guide body 14b is sandwiched by the second upper roller 12 and the second lower roller 13 attached to the lower rocking body 4b. In this state, when the first upper roller 10 and the like are rotated via the driving body 5, each roller rotates to move up and down. On the other hand, when the distance between the upper guide body 14a and the lower guide body 14b is made different, the action of the elastic body 16 causes the upper oscillating body 4a and the lower oscillating body 4b to rotate,
The base 3 maintains the same angle (horizontal angle), the rollers are sandwiched between the guide bodies, and the rollers are moved up and down by rotating the rollers by the driving body. That is, even if the distance between the upper guide body 14a and the lower guide body 14b is different, the upper oscillating body 4a and the lower oscillating body 4b rotate with respect to the base 3, and the base 3 maintains a constant angle. In the horizontal landing on the 2nd and 3rd floors, the chair can be moved in a horizontal state by providing a wide space between the upper guide body 14a and the lower guide body 14b.
Even on stairs having different inclination angles from the first floor to the second floor and from the second floor to the third floor, the chair can always be moved horizontally. Then, on the side of the lower guide body 14b, that is, the first
2 Sliding rotation is possible on the vertical side of the mounting position of the upper roller 12.
The side roller 15 is provided to prevent the fall.
You. Further, in claim 2, the side roller 15 is made of synthetic resin.
Moreover, since it is formed in a cylindrical or cylindrical shape, it is made of synthetic resin.
In order to absorb manufacturing and installation errors due to sexual power etc.,
It can rotate smoothly and prevents falls. or,
In the chair type stair lift according to claim 3, the speed is set or higher.
It is a mechanism to stop the elevator in an emergency. Surpass
When the rolling shaft 8 is rotating normally, the detection roller 23 moves the spring 2
9 slides and rotates with the quadrangular rotary body 21 to rotate the rotary lever 21.
The end of -24 does not engage with the pawl 28a of the stopper. However
However, if the upper rotary shaft 8 rotates faster than the setting,
The exit roller 23 is a corner of the quadrangular rotating body 21 and is a so-called large
Bounces tightly, and the end of the rotary lever 24 is claw 2 of the stop body.
8a, the connecting rod 22 is urged by the spring 29.
To overcome and rotate. As a result, the eccentric rotating body 20 rotates
The eccentric portion is turned into a state of biting into the upper guide body 14a.
Therefore, the movement is blocked and an emergency stop is made.

[0006]

1 is a right perspective view of a chair type stair lift, FIG. 2 is a left perspective view, FIG. 3 is a front sectional view, and FIG. 4 is a side view. 2
Is a sheet and is fixed to the upper part of the plate-shaped base 3. Reference numeral 5 denotes a driving body (motor), which is an upper guide body 1 for forming the rotation of the speed reducer 5a through a chain 6 by a pipe.
4a, the lower guide body 14b is rotated in the form of a slidable recess, and each roller described later formed of synthetic resin (for example, nylon). In addition, on the right side of the speed reducer 5a, a step 18
Is attached. An upper sprocket 8 for transmitting the rotation of the speed reducer 5a is provided at the end of the upper rotary shaft 8 attached to the base 3.
a is attached and rotates via the chain 6 to rotate the first upper roller 10. The first upper roller 10 uses rollers 10a and 10b which are divided into left and right parts, so that an eccentric rotating body 20 constituting an emergency stop mechanism described later can be attached. The plate-shaped rectangular upper rocking body 4a is rotatably attached to the upper rotary shaft 8. Reference numeral 7b is provided so that the mounting shaft of the motor 5 does not interfere with the chain 6, and 7a is a tension adjusting gear for pressing and maintaining the chain 6 through an elastic body (not shown). The detection plate 31 attached to the shaft tilts toward the chain 6 side when the chain 6 breaks, and can be detected by the limit switch 19. At the end of the first lower roller 11, the gear 1 meshed with the gear 10c formed at the end of the first upper roller 10.
1c is formed, is attached to the upper rocking body 4a so as to be rotatable in synchronism with the first upper roller 10, and is installed below the upper guide body 14a formed of a pipe.

On the other hand, the second upper roller 12 arranged at an inclined position (angle α) with respect to the first upper roller 10 has a lower sprocket 9b fixed to the lower rotary shaft 9 meshing with the chain 6. Is rotatably attached to the base 3, and the lower rocking body 4b is rotatably attached to the lower rotation shaft 9 attached to the base 3. In addition, the second lower roller 13 rotatably attached to the lower rocking body 4b, together with the second upper roller 12,
It rotates while being clamped to the lower side of the pipe-shaped lower guide body 14b provided at an arbitrary interval with the upper guide body 14a. Also, on the base 3, the side of the lower guide body 14b (second upper side )
A cylindrical or columnar side roller 15 made of synthetic resin is rotatably provided on the side perpendicular to the mounting position of the roller 12 . If this side roller 15 is made of metal and is formed in the upper guide body 14a and the lower guide body 14b in a slidable concave shape, even if both end portions of the side roller 15 are rotatably attached, they are manufactured and installed. The error cannot be absorbed well, and the lower guide body 14b cannot smoothly slide and rotate. The present application employs a synthetic resin (for example, nylon) that is formed into a cylinder or a column to absorb manufacturing and installation errors through the deformation of the synthetic resin, and to smoothly operate with the lower guide body 14b. Sliding rotation is aimed at. Base 3
An elastic body 16 formed of a coil spring is attached to the lower part of the upper part and the lower part of the oscillating part 4 so as to maintain the pressed state against each other, and the first upper roller 10 and the first lower roller 11 form the upper guide body 1
4a can be rotated while the lower guide body 14b is sandwiched between the second upper roller 12 and the second lower roller 13. That is, even if the distance between the upper guide body 14a and the lower guide body 14b is different, the mutual pressing force of the elastic bodies 16 allows the rollers to be constantly sandwiched between the upper and lower guide bodies 14a and 14b, and will be described later. As will be described in detail later, the angles of the rocking bodies 4a and 4b and the base 3 are changed so that the base 3 can always be maintained in a horizontal state. The first upper roller 10 and the first lower roller 11 sandwich the upper guide body 14a, that is,
The radius (R1) of the first upper roller 10, the radius (R2) of the first lower roller 11, the diameter (D) of the upper guide body 14a, and the center-to-center distance (L) between the first upper roller 10 and the first lower roller 11. )
Then, R1 + R2 + D is installed at a position where L is less than or equal to L, and the sliding surfaces of the rollers 10 and 11 are attached in a slightly distorted state. Further, the second upper roller 12 and the second lower roller 13 are also installed in the same manner to reduce the pressing force of the elastic body 16.

Next, the emergency stop mechanism will be described with reference to FIG. 3 showing a cross section and FIG. 5 showing a conceptual perspective view. still,
FIG. 5 is an assembly diagram of the components, in which the upper diagram of the left diagram, the middle diagram, and the right diagram shows the normal state, and the lower diagram shows the emergency stop state. The first upper roller 10 is divided into left and right parts, and an eccentric rotating body 20 having an eccentric shaft center is formed between the rollers 10a and 10b with a slight gap between the roller and the upper guide body 14a. It is attached to the upper rotary shaft 8 so as to rotate freely. In addition, the upper rotary shaft 8 of the first upper roller 10 has a rectangular rotary body 2
A stop body 28 forming one and four square-shaped claws 28a is fixed side by side, and an L-shaped rotary lever 24 is attached to a connecting rod 22 connected to the eccentric rotary body 20.
You. At the end of the rotary lever 24, the upper rotary shaft 8 rotates normally.
When rolling, it is possible to maintain the position where it cannot be locked to the pawl 28a.
While the other end of the rotary lever 24 is
A detection roller 23 is rotatably attached to the ridge of the quadrangular rotating body 21 so as to be slidable. The end of the connecting rod 22 is fixed to the upper rotary shaft 8 by a nut 25 via a support 27 that is mounted so as to rotate freely , and via a spring 29,
The detection roller 23 is biased so as to be slidable on the ridge of the quadrangular rotary body 21 . In addition, the detection roller 23
A limit switch 26 for detecting the position of is attached, and the motor 5 is stopped by the operation of the limit switch 26, that is, by the rotation of the rotary lever 24.

Next, with reference to FIG. 6, the movement of the chair type stair climbing machine having the above-mentioned structure will be described. The stairs have an angle θ1 from the first floor to the second floor, a landing is provided in the middle of the second floor to the third floor, and an angle θ2 forms from the third floor. Therefore, from the first floor to the second floor, the space between the upper guide body 14a and the lower guide body 14b is H1, the landing space is H2, and the third floor is H3. First, a case will be described in which the upper guide body 14a and the lower guide body 14b, which are installed at the inclination angle θ1 from the first floor to the second floor and the interval is H1, are moved up and down. The upper oscillating body 4a and the lower oscillating body 4b are pressed against each other by the pressing force of the elastic body 16, and the first lower roller 11 and the second upper roller 12 are arranged at a variable angle α as shown in FIG. Therefore,
The first lower roller 11 is pressed in the upper left direction shown in FIG. 6, and the second lower roller 13 is pressed in the upper right direction shown in FIG. 6, so that the upper guide body 14a is sandwiched between the first lower roller 11 and the second upper roller 10.
The lower guide body 14b is kept sandwiched between the upper roller 12 and the upper rocking body 4a and the lower rocking body 4b rotate (angle β
1), the base 3 is kept horizontal. While maintaining this state, the chair-type stair climber rotates the first lower roller 11 and the second upper roller 12 via the chain 6 at the rotation speed reduced by the speed reducer 5a by the activation of the driving body 5. Up and down. Next, in the horizontal condition of the landing,
The space between the upper guide body 14a and the lower guide body 14b is H2. This interval H2 is provided wider than the interval H1, and similarly to the above, the elastic force of the elastic body 16 causes the upper oscillating body 4a and the lower oscillating body 4b to rotate (angle β2), so that the first lower roller 11 and The second lower rollers 13 receive a reaction force from each other,
The upper guide body 14a is sandwiched between the first upper roller 10 and the lower guide body 14b is sandwiched between the second upper roller 12 and the base 3 is horizontal. That is, by changing the distance between the upper guide body 14a and the lower guide body 14b, the base 3 can be always kept in a horizontal state via the upper oscillating body 4a and the lower oscillating body 4b, and in such a state. It becomes movable. Further, similarly to the above, the upper guide body 1 corresponding to the inclination angle θ2 from the second floor to the third floor
By arranging the space between the lower guide body 14a and the lower guide body 14b at H3, the base 3 can be moved horizontally.
When the chain 6 is broken, the limit switch 19 is operated via the detection plate 31 and the driving body (motor) 5 is stopped via a control device (not shown).

Next, the operation of the emergency stop mechanism will be described with reference to FIG. 5. When the upper rotary shaft 8 rotates, a square
The shaped rotating body 21 also rotates in the same manner , and the detection roller 23 has a spring 29.
More slides Ryohen square rotating member 21 to the force, a square rotated
Although it slightly bounces at the corner of the body 21 ,
The end does not engage with the claw 28a of the stopper 28. Therefore, the eccentric rotating body 20 maintains a state in which it has a slight gap with the upper guide body 14a (upper diagram of the left, middle, and right in FIG. 5). However, when the number of rotations of the upper rotary shaft 8 increases, the rectangular rotary body
The rotation speed of 21 also increases. Then, the detection roller 23
At the corners of the quadrangular rotary body 21 , the spring 29 force is overcome to make a large bounce, and the other end of the rotary lever 24 is stopped at the stop body 2.
8 is hooked on the claw 28a to rotate the connecting rod 22 to the position shown in the lower diagram of FIG. As a result, the eccentric rotating body 20 attached to the connecting rod 22 rotates, and the eccentric portion of the eccentric body 20 bites into the upper guide body 14a to prevent movement (left in FIG. 5,
(Middle, right figure). As a result, when the speed exceeds the setting,
We have made an emergency stop to ensure safety. The detection roller 23
However, during normal operation, the limit switch 26
In the “N” state, on the contrary, when the detection roller 23 rotates, the limit switch 26 turns “OFF” to prevent the rotation of the first upper roller 10 as described above, and at the same time, to prevent the drive body (motor) 5 from rotating. It is configured to stop the start up for safety. Further, it goes without saying that this emergency stop mechanism can be operated by assembling it to the roller in the elevator (FIG. 7) for raising and lowering with the conventional chain.

[0011]

The chair type stair lift according to claim 1 is a lower guide.
A side roller that can slide and rotate is provided on the side of the body to tip over.
It is possible to prevent
By forming the roller in a synthetic resin cylindrical shape,
Manufacturing and installation errors are absorbed by the elastic force of synthetic resin.
Because it is stored, it can rotate smoothly and prevents falling.
Stop. Further, the chair type stair lift according to claim 3 slides on a ridge.
The moving rotating lever bounces depending on the rotation speed of the upper rotating shaft.
However, depending on the way of bouncing, the rotation lever
Rotate the rotation lever by locking the end to the claw
Te, prevent movement by bite into the upper guide body eccentric rotor
It has an emergency stop mechanism that
You.

[Brief description of the drawings]

FIG. 1 is a right perspective view of a chair type stair lift.

FIG. 2 is a right perspective view of a chair type stair lift.

FIG. 3 is a front sectional view of a chair type stair lift.

FIG. 4 is a side view of a chair type stair lift.

FIG. 5 is an assembly diagram of parts for an emergency stop.

FIG. 6 is a diagram for explaining a lifted state of the chair-type stair lift.

FIG. 7 is a view showing a conventional chair type stair lift.

[Explanation of symbols]

3 Base 4a Upper oscillating body 4b Lower oscillating body 5 Driving body (motor) 8 Upper rotating shaft 9 Lower rotating shaft 10 (10a, 10b) First upper roller 11 First lower roller 12 Second upper roller 13 Second lower roller 14a Upper guide body 14b Lower guide body 15 Side roller 16 Elastic body 20 Eccentric rotating body 21 Square rotating body 22 Connecting rod 23 Detection roller 24 Rotating lever 27 Supporting body 28 Stopping body 28a Claw 29 Spring

Claims (3)

(57) [Claims] 1. On a base 3 to which a seat is fixed
The upper oscillating body 4a is attached to the rotary shaft 8 and the lower oscillating body 4b is attached to the lower rotary shaft 9.
Are rotatably attached, and the upper guide body 14a and the lower guide body 14b are arranged at arbitrary intervals.
The upper guide shaft 14a of the upper guide shaft 14a is installed on the upper rotary shaft 8 installed on the base 3.
When the upper first roller 10 is rotatably provided,
The lower roller attached to the base 3 at an inclined position with the first upper roller.
The rotating shaft 9 is provided with a second upper row that is above the lower guide body 14b.
1 is provided below the upper guide body 14a on the upper rocking body 4a.
The lower roller 11 is attached to the lower swing body 4b and the lower guide body 14b.
The second lower roller 13 on the lower side is rotatably provided, and elastically presses the upper oscillating body 4a and the lower oscillating body 4b against each other.
First upper roller 10 and first lower roller 11 via body 16
The upper guide body 14a with the second upper roller 12 and the second lower roller.
The lower guide body 14b can be sandwiched by the la 13, and the first upper roller 10, the first lower roller 11, and the second upper roller 1
2, rotationally drive at least one of the second lower roller 13
Is provided on the side of the lower guide body 14b (at the mounting position of the second upper roller).
Provide a side roller 15 that can slide and rotate on the vertical side.
A chair-type stair lift that is characterized by: 2. The side roller 15 is made of synthetic resin and has a circular shape.
The chair according to claim 1, wherein the chair is formed into a cylinder or a cylinder.
Child stair lift. 3. A first upper roller which rotates on the upper guide body 14a.
In a chair-type stair lift that moves up and down via a roller 10, a shaft is provided between the first upper rollers 10a and 10b that are divided into left and right.
The eccentric rotating body 20 whose core is eccentric to the upper guide body 14a
It is necessary to attach the support body 27 to the upper rotary shaft 8 so as to be able to idle therewith a slight clearance, and to attach the support body 27 to the upper rotary shaft 8 so as to be idle.
And is connected to the eccentric rotating body 20 via a connecting rod 22, and the stopping body 28 composed of the quadrangular rotating body 21 and the claw 28a is moved above.
It is fixed together with the rotary shaft 8 and the L-shaped rotary lever 24 is a connecting rod.
22 is rotatably attached to the rotary lever 24, and the other end of the rotary lever 24 is quadrangularly rotated by a spring 29.
A slidable detection roller 23 is attached to the rolling edge of the rolling element 21.
On the other hand, the end part is kept in a position where it cannot be locked to the claw 28a under normal conditions.
Characterized by having an emergency stop mechanism that can be formed
Chair type stair lift.