JP2901944B2 - Stair climbing assist device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stair climbing assisting device for assisting a physically handicapped person and an elderly person who can walk on a flat road but have difficulty climbing up and down stairs.

[0002]

2. Description of the Related Art A conventional stair climbing assist device is disclosed, for example, in Japanese Utility Model Laid-Open Publication No. Sho 62-157775. In this prior art, a suspension wheel driven up and down is provided on one side along the stairs, and a handrail is provided on the other side. The user grips the suspension wheel with one hand and holds the handrail with the other hand. grip,
The stairs can be moved up and down by using their own power while being assisted by the lifting / lowering operation of the suspension wheel.

[0003]

In such a conventional stair climbing assist device, one hand is pulled by a suspension ring.
Since the other hand grips the handrail, the other hand must repeatedly change the handrail according to the moving speed of the suspension ring. In addition, since the user holds the suspension ring with one hand and holds the handrail with the other hand, the user must climb up and down the stairs with both hands spread on both sides of the body, so it is difficult to apply force. Have a problem. Furthermore, since the suspension ring is hung, there is a problem that it is difficult to stably support the body because the suspension ring is greatly shaken when a force is applied.

[0004] It is an object of the present invention to provide a stair climbing assist device which allows a user to stably move up and down stairs by applying force and using his / her own power.

[0005]

According to the present invention, there is provided an endless guide rail provided at a fixed position of a stair provided from a lower floor to an upper floor and extending along a stair rising / lowering direction; In the stretched state, a rope driven in a predetermined traveling direction, a traveling drive source for traveling and driving the rope in a predetermined traveling direction, and fixed along the rope and guided along a guide rail A traveling body that is connected to the traveling body, and is provided so as to be displaceable to a protruding position that is perpendicular to the ascending and descending direction of the stairs and that protrudes in the horizontal direction and a retracted position that is retracted from the protruding position; A stair-climbing assist device characterized by including a gripping member disposed at a retracted position in the frame region.

According to the present invention, an endless guide rail is provided in a fixed position of a stair, for example, on a wall surface, along the direction of ascending and descending the stair, and a rope stretched along the guide rail and the rope are provided. A traveling body fixed to the cable is guided along a guide rail by a traveling drive source for traveling and travels. A gripping member provided to be displaceable over the protruding position and the retreat position is connected to the traveling body. Therefore, the user on the lower floor arranges the gripping member of the traveling body at the protruding position, and travels the traveling body in the upward direction from the lower floor to the upper floor in the upper stretch region in a state where the gripping member is gripped. By driving, even a user who has difficulty in ascending and descending the stairs can support the upper body with the gripping member, and can easily climb the stairs by using the traveling body to be driven to travel and its own power. In addition, since the gripping member is provided so as to extend in the projecting position in a direction perpendicular to the ascending and descending direction of the stairs and in a horizontal direction, the user can grip the gripping member on the front surface of the body, and effectively apply force to the arm. Can support the body.

In the case where a plurality of traveling bodies are fixed to the cable, while the user climbs the stairs using one traveling body fixed to the upper suspension area, the lower suspension area is used. The other lifting / lowering body fixed to the rope of the vehicle may be driven to travel in a descending direction from the upper floor to the lower floor, and the gripping member of the other traveling body may pay a step to the user who goes up, which may cause an obstacle. However, since the gripping member is disposed in the retracted position retracted from the protruding position in the understretched area, it is possible to prevent the user from being hindered while climbing and to be safe.

Further, the gripping member of the present invention has a base fixed to the traveling body and one end having the one end part in a state where angular displacement in a direction opposite to the traveling direction of the traveling body is prevented in the upper stretch region. A grip member body pivotally supported by the base.

According to the present invention, the gripping member includes a base fixed to the traveling body, and a gripping member main body having one end pivotally supported by the base. Angular displacement in the direction opposite to the direction is prevented. Therefore, when the gripping member is disposed in the projecting position in the upper stretch region and is driven to travel in the ascending direction, when the user attempts to support the body by pulling the gripping member toward the user, The body can be stably supported without the main body being angularly displaced forward. In addition, the gripping member is pivotally supported at one end by the base in a state where angular displacement in the direction opposite to the traveling direction is prevented, so that the 180 ° traveling body is inverted from the upper tension region to the lower tension region. Accordingly, the gripping member main body disposed at the projecting position is angularly displaced by the action of gravity, and is disposed at the retracted position. Therefore, the gripping member can be reliably retracted to the retracted position in the lower stretch region with a simple configuration without separately providing a means for driving the gripping member to perform angular displacement.

Further, according to the present invention, there is provided a user detecting means for detecting a user at a predetermined position on a lower floor, and a traveling body responding to a detection output of the user detecting means, wherein the traveling body is moved from the lower floor to the upper floor in the upper stretch area. And control means for controlling a travel drive source so as to travel to the floor.

According to the present invention, when the user comes to a predetermined position on the lower floor, this is detected by the user detecting means, and the control means responds to the detection output of the user detecting means to move the traveling body to the lower floor. To the upper floor. Therefore, the traveling drive source is stopped while there is no user, and the traveling drive source is driven only when the user comes to a predetermined position on the lower floor, so that waste of energy can be suppressed.

[0012]

FIG. 1 is a side view showing a stair climbing assist device 101 according to an embodiment of the present invention. FIG. 2 is a front view of the stair climbing assist device 101 viewed from the right side of FIG. It is. The stair climbing assist device 101 is provided on a wall surface 105 which is a fixed position of a stair 104 provided from the lower floor 102 to the upper floor 103, and is provided with a guide rail 10.
6, chain 109, lifting drive source 110, and gripping member 11
2 and a traveling body 111 having the same.

The guide rail 106 extends along the vertical directions A and B of the stairs 104 and is fixed to a vertical wall surface 105. Inside the upper end and the lower end of the guide rail 106, upper and lower sprockets 107 and 108 having a horizontal rotation axis are rotatably provided, and a chain 109 which is a rope extending over the upper and lower sprockets 107 and 108. Is stretched. The upper sprocket 107 is rotationally driven by a traveling drive source 110 such as a motor disposed on the upper floor 103, and moves the chain 109 from the lower floor 102 to the upper floor area 102 in a predetermined traveling direction C, in this embodiment, the upper stretch region S11. The vehicle is driven to travel in the ascending direction A toward 103.

A plurality of, in this embodiment, three traveling bodies 111a, 111b, 111c (sometimes abbreviated as traveling bodies 111) are fixed to the chain 109, and the traveling bodies 111 have long gripping members. 112 are connected. The gripping member 112 is provided so as to be displaceable to a protruding position that is perpendicular to the ascending and descending directions A and B of the stairs and that protrudes in the horizontal direction and a retreating position retreated from the protruding position. Be placed. In this embodiment,
The gripping member 112 is angularly displaced in the traveling direction C so as to be parallel to the wall surface 105 of the stairs 104 and is disposed at the retracted position. Also, as shown in FIG.
14 are provided along the ascending and descending directions A and B, thereby separating the user of the stair-climbing assisting device 101 from the general user of the stairs 104, thereby making it easier to use the stair-climbing assisting device 101.

The gripping member 112 is provided with a control device 116 (see FIG. 3) having, for example, a transmitter.
Control means 117 for controlling the driving of the traveling drive source 110
Is provided with a receiver for receiving a signal from the transmitter, and the traveling drive source 110 responds to this signal to
09 is driven to run. The lower floor 102 is provided with a user detecting means 115.
15 is a lower floor 102 on which a stair climbing assist device 101 is provided.
A user near the lower end is detected, and the user detecting means 11
The control means 117 electrically connected to the control unit 5 controls the travel of the travel drive source 110 in response to the detection output of the user detection means 115, and the lower stretch area S12 is closer to the upper floor 103 than to the lower floor 102. The running body 111 closest to
In FIG. 1, the traveling drive source 1 is moved until the traveling body 111b reaches the initial position which is the inversion end position of the lower inversion area S14.
10 is driven. Further, the user detection means 115
For example, a reflective photo interrupter or lower floor 1
02 consists of a sheet switch.

Therefore, the user can use the stair climbing assist device 10
When approaching the vicinity of the lower end of 1, it is detected by the user detecting means 115, and the chain 109 is driven to travel, the traveling body 111 moves to the lower floor 102, is arranged at the initial position, and temporarily stops. Then, the user angularly displaces the gripping member 112 from the retracted position to the protruding position, operates a switch provided on the control device 116 provided on the gripping member 112, transmits a traveling signal to the control means 117, and travels the traveling body 111. The vehicle is driven to travel in the direction C. Thus, the user can easily climb the stairs 104 with his / her own power while the upper body is supported by the gripping member 112.

If it is desired to stop the vehicle while the stairs 104 are being lifted, a stop signal can be transmitted by operating a switch provided in the control unit 116 to stop driving the traveling drive source 110. The control unit 116 is provided with a speed control device, so that the driving speed of the traveling drive source 114 can be adjusted to a speed desired by the user. Such a control unit 116 includes the gripping member 112
Therefore, the user can easily control the running, stopping, and adjusting the running speed of the running body 111 at hand while using the stair-climbing assist device 101.

When the vehicle reaches the upper floor 103 in this way, the control means 117 stops the traveling drive of the traveling drive source 110. After the traveling body 111 stops, the user releases the gripping member 112 and walks on the upper floor 103 to separate from the stair climbing assist device 101. At this time, the gripping member 1
12 is provided so as to be angularly displaceable in the traveling direction C, so that when the traveling body 111 stops on the upper floor 103,
The user may move while avoiding the grip member 112, but even if the user moves forward, the grip member 11
2 is prevented from evacuating and hindering walking.

In this way, the user can move the upper floor 103
Then, when a new user arrives at the lower floor 102, the traveling drive source 110 is driven to move the new traveling body 111 to the initial position of the lower floor 102 as described above. At this time, even if the gripping member 112 of the traveling body 111 arranged on the upper floor 103 side is arranged at the protruding position, the gripping member 112 is held by its own weight when the traveling body 111 is inverted in the upper inversion area S13. Member 112
Is disposed at the evacuation position, and when the traveling body 111 travels on the lower stretch area S12, the gripping member 112 travels in a state where it is disposed at the evacuation position. Therefore,
When the user climbs the stairs 104 by gripping the gripping member 112 of the traveling body 111 on the upper stretching area S11, the gripping member 112 of the traveling body 111 traveling in the downward direction B on the lower stretching area S12 is This prevents the user from stepping on the floor. Further, when a new user arrives at the lower floor 102 while using the stair-climbing assisting device 101, after the user in use reaches the upper floor 103, the driving drive source 110 is continuously driven to lower the lower floor. Running body 1 near floor 102
11 is moved to the initial position of the lower floor 102.

An alarm means is provided in the control device 116, and when the traveling body 111 reaches the vicinity of the upper floor 103, for example, a beep is sounded to notify that the vehicle 111 has reached the vicinity of the upper floor 103, and a grip member 112 is provided.
May be configured to prompt the user to prepare to release the hand.

A V-belt or a rope and a pulley may be used instead of the chain 109 and the upper and lower sprockets 107 and 108.

FIG. 3 is a sectional view taken along the line III--III of FIG. 1, FIG. 4 is a plan view of the traveling body 111, and FIG. 5 is a view of the traveling body 111 seen from the right in FIG. FIG. 6 is a left side view of the traveling body 111. FIG. The guide rail 106 has an annular inner peripheral wall 121 and an outer peripheral wall 122 extending along the stairs ascending and descending directions A and B, and these inner and outer peripheral walls 121 and 122 are covered by a cover 125 from outside.
Blocked by. One side in the width direction (right side in FIG. 3) of the inner peripheral wall 121 disposed inside is fixed to the wall surface 105 of the stairs as shown in FIG. 3, and the outer peripheral wall 122 is disposed parallel to the inner peripheral wall 121, A gripping member support rod 15 which is a base of the gripping member 112 between one side in the width direction and the side surface 105
A gap is formed through which the two can pass. Inner and outer peripheral walls 12
At the other end in the width direction of the mounting pieces 1 and 122, mounting pieces 123 and 124 are fixed vertically to the peripheral walls 121 and 122, respectively.
The cover 125 is fixed to the inner and outer peripheral walls 121 and 122 by bolts via the 23 and 124. Cover 12
5 are inner and outer peripheral walls 121, 12 as shown in FIG.
2 is covered from the outside, covering the entire surface from the other side in the width direction.

The traveling body 111 is composed of a traveling body 130 and a plurality of rollers provided on the traveling body 130, is provided with a gripping member 12, and a gripping member 112 is a gripping member support rod which is a base fixed to the traveling body 110. 152, and a gripping member main body 118 that is connected to the gripping member support rod 152 so as to be angularly displaceable. The traveling main body 130 includes a substantially plate-shaped base 131 parallel to the inner and outer peripheral walls 121 and 122, and an upstream side and a downstream side in the running direction C on the other side in the width direction (left side in FIGS. 3 and 4). The first and second vertical portions 132 and 133 are respectively fixed to the sides and are provided substantially perpendicular to the base 131, and are provided in parallel with the base 131 between the first and second vertical portions 132 and 133. And a plate-shaped protrusion 134 protruding toward the cover 125 of the guide rail 6.

As shown in FIG. 4, the base 131 of the traveling main body 130 has first, second, and
Third and fourth lateral guide rollers 135, 136, 137,
138 are provided. Each of the guide rollers 135 to 138 has a rotation axis perpendicular to the outer peripheral wall 122 of the guide rail 106, that is, perpendicular to one surface 131 a of the base 131, and is arranged along the running direction C. As shown in FIG. 3, a first guide rail 139 having a substantially U-shaped cross section is fixed to the inside of the outer peripheral wall 122 by bolts, and each of the lateral guide rollers 135 to 138 is connected to the first guide rail 13.
9. As shown in FIG.
The first and fourth lateral guide rollers 135 and 138 are arranged to be shifted to one side (right side in FIG. 4), and the second and third lateral guide rollers 136 and 137 are arranged to the other side (left side in FIG. 4). The guide rollers 135 to 135 are attached to the first guide rail 139 as shown in FIG.
With the 138 fitted, the first and fourth lateral guide rollers 135 and 138 abut against the falling portion 147 on one side of the first guide rail 139, and the second and third lateral guide rollers 136 and 137 Abuts against the falling portion 148 on the other side. Thus, each guide roller 135-1
38, each falling portion 147 of the first guide rail 139,
By contacting either one of the guide rails 148, the traveling body 111 is prevented from shifting in the width direction of the guide rail 106, that is, in the left-right direction in FIG. 3, and is smoothly guided along the guide rail 106. Will be.

As shown in FIG. 6, the first vertical portion 132 on the downstream side in the traveling direction C has a first vertical guide roller 14 on its upper end.
1 is provided, and a second vertical guide roller 142 is provided at a lower end portion. Similarly, a third vertical guide roller 143 is provided at an upper end of the second vertical portion 133, and a fourth vertical guide roller
4 are provided. Each of the vertical guide rollers 141 to 144 is rotatably provided around a horizontal rotation axis, and first and third vertical guide rollers 141 and 14 provided above.
3 contacts the outer peripheral wall 122 and the lower second and fourth vertical guide rollers 142 and 144 contact the inner peripheral wall 21 as shown in FIG. Thus, the two vertical guide rollers 14
2 and 144 are in contact with the inner peripheral wall 121 and the two vertical guide rollers 141 and 143 are in contact with the outer peripheral wall 122 to drive the traveling body 111 to travel. Therefore, the traveling body 111 is displaced or rattled during traveling. Guide rail 1 smoothly without
06. The distance L1 between the second and fourth vertical guide rollers 142 and 144, which is disposed below and to which a downward force from the user acts during traveling, is set between the first and third vertical guide rollers 141 and 143. Since the distance is selected to be larger than the distance L2, the traveling body 111 can be stably supported and guided along the guide rail 106 during use.

A pair of chain attachment pieces 150 bent in an L-shape are provided at the lower center in the longitudinal direction of the base 131.
The chain 109 is attached to the traveling body 111 via the chain attachment piece 150. As shown in FIG. 3, a rectangular columnar chain guide 151 is fixed to the inner peripheral wall 121 along the traveling direction C by bolts, and
9 is such that the bush 161 between the pin link plates 162 abuts on the chain guide 151 and
Will be smoothly guided along.

The protruding portion 134 of the traveling body 130 has a fifth lateral guide roller 145 rotatable about a rotation axis perpendicular to the inner peripheral wall 121, that is, perpendicular to one surface of the protruding portion 134.
Is provided below the protrusion 134. Also, the inner peripheral wall 12
1, a second guide rail 146 abutting on the fifth lateral guide roller 145 is fixed along the traveling direction C. Therefore, the user holding the holding member 112 can move the wall 1 of the stairs.
When the traveling body 111 is pulled to the outside (left side in FIG. 3) away from the fifth traveling guide 111, the fifth lateral guide roller 14
5 is prevented from contacting the second guide rail 146 and the traveling body 111 being displaced outward. As a result, the pin link plate 162 on the side of the chain 109 guided along the chain guide 151 is prevented from abutting on the chain guide 151, and the traveling body 111 can travel smoothly. In addition, the gripping member body 11
8 are connected via a gripping member support rod 152 extending upward from one side in the width direction at the longitudinal center portion of the traveling main body 130, that is, from the vicinity of the chain mounting piece 150, so that the driving force from the chain 109 is effective. Is transmitted to the holding member 112. In addition, since the fifth lateral guide roller 145 is provided at the central portion in the longitudinal direction of the traveling main body 130, most of the force when the user pulls the gripping member 112 outward is transmitted through the fifth lateral guide roller 145. Acts on the two guide rails 146. Therefore, the second guide rail 14
6 has strength enough to withstand such a large force.
Therefore, the first to fourth lateral guide rollers 135 provided above one side in the width direction of the traveling main body 130 in a state where the outward force of the traveling main body 130 is supported below the central portion in the longitudinal direction of the traveling main body 130. 138 to the running body 1 in the width direction
11 is reliably prevented. Thus, the first to fourth lateral guide rollers 135 to 138 and the fifth lateral guide roller 14
5, the traveling body 111 can run stably.

The second and fourth vertical guide rollers 142,
The 144 is retracted to one side in the width direction from the first and third vertical guide rollers 141 and 143 so as not to abut on the second guide rail 146. Thus, downsizing of the traveling main body 111 is achieved.

The inner peripheral wall 121 of the guide rail 106 is shown in FIG.
As shown in FIG.
A notch 113 is formed so as to be able to mesh with No. 9. Further, a traveling drive source 110 for driving the upper sprocket 107
May be provided inside the inner peripheral wall 121 and not provided outside the guide rail 106. The notch 113 is the traveling body 1
11 is inverted in the upper inversion area S13, the traveling body 13
0 of the first and second vertical portions 132 and 133
1 and 2 so that the second and fourth longitudinal guide rollers 1
It is formed so as to be retracted immediately before 42 and 144. Inner wall 1
A similar notch is also formed at the lower end of 21.

The gripping member support rod 152 has a base end fixed to the longitudinal center of the traveling main body 130, extends vertically upward with respect to the base 131, and has a distal end to which one end 158 of the gripping member main body 118 can be angularly displaced. Linked to As shown in FIG. 4, the distal end of the gripping member support rod 152 is reduced in diameter to form an angular displacement shaft 157. The gripping member main body 118 is formed in a substantially columnar shape, one end 158 is formed in a plate shape, an insertion hole 160 through which the angular displacement shaft 157 of the gripping member support rod 152 is inserted is formed, and the gripping member 112 supports the gripping member support. Stick 1
52 is free to be angularly displaced about an angular displacement axis L1 which is an axis of 52,
That is, when the traveling body 111 is on the upper stretch region S11, the gripping member 112 can be angularly displaced in the traveling direction C. A detent member 155 is fixed to the tip of the gripping member support bar 152. When the gripping member 112 is in the protruding position, the detent member 155 holds the gripping member support rod 1
The locking piece 156 of the rotation preventing member 155 extending upward in parallel to 52 is provided with a gripping member body in the other width direction (left side in FIG. 4) of the traveling body 111 with respect to the angular displacement axis L1 from the downstream side in the traveling direction C. 118 and thereby the gripping member 1
It is possible to prevent angular displacement of the position 12 in the traveling direction C downstream of the protruding position, and to stably support the user.

The traveling body 111, which is driven to run while being placed at the projecting position on the upper stretching area S11, is moved upward by the upper reversing area S13.
In the case where the gripping member body 11 is turned over by 90 °,
8, the gripping member main body 118 is retracted to a retreat position parallel to the wall surface 105, and further in this state, the gripping member 112 is retracted in the lower stretch region S12.
That is, the tip of the gripping member body 118 is
The vehicle is driven to travel in the state of. In addition, when the gripping member 112 is inverted in the lower inversion area S14 in this state, the gripping member 112 does not protrude to the protruding position and is driven to travel in the upper stretching area S11 in a retracted state. Therefore, it is possible to prevent the gripping member 112 not used by the user from being arranged at the protruding position.

The traveling body 111 is provided at one end 1 of the gripping member main body 118 at a tip end of a gripping member support rod 152 protruding upward on an inner side on the wall surface 105 side with respect to the guide rail 6.
58 are provided. As described above, since the grip member 112 is provided on the inner side of the guide rail 6 instead of the outer side,
No voids are formed on the outer side where the user is located,
This prevents clothes and fingers from getting into gaps and the like, and improves safety.

The gripping member body 118 of the gripping member 112
As shown in FIG. 3, first and second locking portions 153 and 154 are provided to protrude upward at intervals in the longitudinal direction. Therefore, the user can use these first and second
Even if the gripping member body 118 between the locking portions 153 and 154 is gripped and the hand for gripping the gripping member body 118 slips, the hand comes into contact with the first and second locking portions 153 and 154 and is released from the gripping member body 118. Can be prevented from slipping through. In addition, the structure which does not provide the 2nd locking part 154 arrange | positioned inside may be sufficient.

Further, the gripping member body 118 is provided so as to be angularly displaceable about an angular displacement axis parallel to the traveling direction C of the traveling body 111, and substantially at the retracted position retracted upward in the upper extension region S11 and the upper extension region S11. You may comprise so that it may be angularly displaceable over the protruding position latched in the state which protruded horizontally. Even with this configuration, the gripping member main body 118 at the protruding position when inverted by 180 ° in the upper inversion area S13 is suspended downward by its own weight and disposed at the retracted position, and is suspended downward in the lower stretch area S12. The vehicle is driven to run while retracted.

FIG. 7 shows a landing 16 in the middle of the stairs 104.
It is a side view which shows the stairs climbing assistance apparatus 170 in case 5 is provided. When the landing 165 is provided as described above, the intermediate portion of the guide rail 106 of the stair climbing assist device 170 is formed to be horizontal along the landing 165. Even in such a case, the traveling body 111 is connected to the guide rail 10.
By driving along 6, it is possible to assist the user to climb the stairs from the lower floor 102 to the upper floor 103. Further, in this case, each of the vertical guide rollers 141 to 144 of the traveling body 111 has an interval L2 between the first and third vertical guide rollers 141 and 143 and an interval L1 between the second and fourth vertical guide rollers 142 and 144. Are selected equally, so that even if the traveling direction of the traveling body 111 is displaced downward or upward, the traveling
1 can be guided.

The stair climbing assist device 17 shown in FIG.
As shown in FIG. 1, a guide rail 106 is provided only along the upper stretch region S11, and one traveling body 111 is configured to reciprocate along the vertical directions A and B along the guide rail 106. Good. Even in the case of such a configuration, the user can hold the holding member 11 of the traveling body 111 on the lower floor 102.
2 is held, and the chain 109 is
, The traveling body 111 is driven to travel in the ascending direction A, so that the traveling body 111 can easily climb from the lower floor 102 to the upper floor 103. The user is on the upper floor 103
, The traveling body 111 is returned to the lower floor 102.

As shown in FIG. 9, when the landing 165 is provided, the stair climbing assist device 172 is similar to the stair climbing assist device 171 by arranging the intermediate portion of the guide rail 106 horizontally and along the stairs 104. The effect can be achieved.

These stair climbing assist devices 171 and 172
Also, when moving the gripping member 112 from the upper floor 103 to the lower floor 102,
Is retracted to the retreat position, and the traveling drive source 110 is inverted and lowered. This prevents the stairs 104 from hindering general traffic.

FIG. 10 is a side view showing a stair-climbing assist device 1 according to another embodiment of the present invention. The stair climbing assist device 1 is provided on a wall surface 5 which is a fixed position of a stair 4 provided from the lower floor 2 to the upper floor 3, and includes a guide rail 6, a chain 9, a traveling drive source 10, and a gripping member 1.
2 and a traveling body 11 having the same. The guide rail 6 is formed by connecting a square tube having a substantially C-shaped cross section cut endwise at one place in the circumferential direction to be endless, extends along the ascending and descending directions A and B of the stairs 4, and has a vertical wall surface. Fixed to 5. Upper and lower sprockets 7 and 8 having a horizontal rotation axis are rotatably provided on the inner peripheral sides of the upper end and the lower end of the guide rail 6, and the upper and lower sprockets 7 and 8 are ropes. The chain 9 is stretched. That is, the chain 9 is stretched along the guide rail 6 within the guide rail 6. Upper sprocket 7
Is driven by a traveling drive source 10 such as a motor to rotate the chain 9 in a predetermined traveling direction, for example, a rising direction A from the lower floor 2 to the upper floor 3 in the upper stretch area S1 and a descending direction opposite to the rising direction. The vehicle is selectively driven to run in one of directions B (in the general case, ascending and descending directions A and B).

The chain 9 has an even number, 4 in this embodiment.
Traveling bodies 11a, 11b, 11c, 11d (traveling body 1
1 in some cases) is fixed.
Is connected to a long gripping member 12. Gripping member 12
Is movably provided at a protruding position perpendicular to the stairs elevating directions A and B and protruding in the horizontal direction and at a retreat position retracted from the protruding position, and is disposed at the retreat position at least in the lower stretch region S2. . The retreat position is a position where the gripping member 12 does not hinder the passage of the user of the stairs 4 and is a position where the grip member 12 is angularly displaced so as to be parallel to the wall surface 5 of the stairs 4.

Stairs 4 from lower floor 2 to upper floor 3
Of the traveling body 11 on the lower floor 2 side.
The stairs 4 can be easily lifted by using the traveling body 11a, which is driven to travel in the ascending direction A, together with its own power, by gripping the gripping member 12 of FIG. Similarly, when descending the stairs 4, the gripping member 12 of the traveling body 11b on the rising floor 3 side is used.
, And can easily descend the stairs 4 using their own power. In addition, since the gripping member 12 is disposed at the retracted position in the lower stretch region S2, the staircase 4 is moved using the traveling body 11a.
During the upward movement, the gripping members 12 of the traveling bodies 11b and 11d that are driven to travel in the downward direction B in the lower stretch region S2 are prevented from stepping on the user's feet.

A user detecting means 15 for detecting that a user is present at a predetermined position on the lower floor 2 is fixed to the wall 5 on the lower floor 2 side, and similarly, the user detecting means 15 on the upper floor 16 side.
Also, the upper user detecting means 15 for detecting a user at a predetermined position on the upper floor 3 is fixed. These upper and lower user detecting means 15 and 16 are, for example, reflection type photo interrupters, and detect that the user is at a predetermined position, that is, a position where the gripping member 12 can be gripped. Also,
It may be a sheet switch arranged on each of the floors 2 and 3 instead of the photo interrupter.

The control means 17 controls the traveling drive source 10 in response to the detection outputs from the upper and lower user detection means 15 and 16. For example, when a user at a predetermined position is detected by the lower user detecting means 15, the control means 17 drives the traveling drive source 10 to cause the traveling body 11 to move in the upper stretch region S1.
Is controlled to travel in the ascending direction A. A timer 18 is connected to the control means 17, and the timer 18 causes the traveling body 11 arranged on the lower floor 2 side to start a time counting operation from the start of traveling driving, and the traveling body 11 moves from the lower floor 2 to the upper floor Time T required to reach 3
When the vehicle travels one time, the driving of the traveling drive source 10 is stopped. The traveling body 11a on the lower floor 2 moves to the upper floor 3 and the traveling body 11b located on the upper floor 3 moves to the lower floor 2. Therefore, when the user subsequently comes to the lower floor 2 or the upper floor 3, it is possible to quickly grasp the holding member 12 of the traveling body 11a or 11b and move up and down the stairs 4.

Since an even number of traveling bodies 11 are fixed to the chain 9, the traveling bodies 11a of the lower floor 2 are as described above.
Even if the vehicle moves to the upper floor 3, the traveling body 11b is arranged on the lower floor 2, so that even if another user comes after the lower floor 2, the stair climbing assist device 1 is used immediately. can do. Further, even if the next user comes to the raised floor 3, the traveling body 11
Since “a” is arranged, the user of the upper floor 3 can use the stair-climbing assistance device 1 quickly.

Further, for example, when the user is climbing the stairs by using the traveling body 11a and the next traveling body 11d has not reached the lower floor 2, the next user can move to the lower floor 2.
Is detected by the lower user detecting means 15 at a predetermined position, the control means 17 determines that the traveling body 11d is in the lower floor 2
Is reached, a new time is measured by the timer 18, and the traveling drive source 10 is driven until the traveling body 11d reaches the upper floor 3. Thus, a user who has continued can quickly use the stair climbing assist device 1 and can operate the stair climbing assist device 1 smoothly. When the upper user detecting means 16 detects the user immediately after the lower user detecting means 15 detects the user, first, the traveling body 11a on the lower floor 2 side is driven to travel to the upper floor 3 side. Subsequently, the traveling direction of the chain 9 is reversed, and the traveling body 11a that has moved to the upper floor 3 is driven to travel to the lower floor 2.

The distance L3 between the traveling bodies 11 adjacent to each other
Is selected to be 2 m or more, preferably about 3 m. When the distance L3 is less than 2 m, the distance between the users becomes narrow, and it becomes difficult to use the space smoothly.

The stair-climbing assisting device 1 is used to assist the user in ascending and descending the stairs.
May be used only for assisting the rise of the pressure. In this case,
The detection means is only the lower user detection means 15, and the traveling drive source 10 drives the traveling body to travel only in the upward direction A. When an odd number of traveling bodies 11 are fixed to the chain 9, the traveling bodies 11 arranged on the lower floor 2 side move to the upper floor 3 side, and then the lowermost floor 2 in the lower stretch region S2. Move the approaching vehicle 11 to the lower floor 2
The traveling drive source 10 is controlled so as to move to. Thereby, the stair-climbing assisting device 1 can be operated smoothly.

A V-belt and a pulley may be used in place of the chain 9 and the upper and lower sprockets 7, 8.

The upper and lower user detecting means 15, 1
6, a sensor for detecting that the gripping member 12 has been displaced from the retracted position to the protruding position is provided on the gripping member 12, and the control means 17 uses the detection output of this sensor to control the traveling drive source 1.
0 may be controlled. For example,
Grasping member 1 of traveling body 11a arranged on lower floor 2 side
When 2 is displaced to the protruding position side, the control means 17 determines that the user has displaced the gripping member 12 to the protruding position,
As a result, the traveling body 11a is driven up to the upper floor 3. Similarly, when the gripping member 12 of the traveling body 11b on the upper floor 3 side is displaced to the projecting position, the control unit 17 drives the traveling body 11b to travel to the lower floor 2. Thus, the control means 17 can drive the traveling body 11 after traveling, after determining that the user has grasped the grasping member 12 at the projecting position without fail.

FIG. 11 is a sectional view taken along the line XI-XI of FIG. The guide rail 6 is in the form of an endless square tube, the inner wall 20 is fixed to the wall 5, and the notch 13 is formed in the outer wall 23, and the gripping member 1 is formed from the notch 13.
3 will protrude.

The traveling body 11 has a columnar base body 25 and a pair of rollers 26 and 27 rotatably fixed to both ends of the base body 25 in the longitudinal direction. It protrudes from the notch 13 of the outer side wall 22 and forms a base 28 of the gripping member 12. One end 29a of a substantially cylindrical gripping member main body 29 is pivotally supported on the base 28 by a pin 30 parallel to the guide rail 6 so as to be angularly displaceable. The rollers 26 and 27 of the traveling body 11 are moved up and down directions A and B of the stairs 4.
Are provided rotatably about a rotation axis 35 extending vertically and horizontally to the inner peripheral wall 21 of the guide rail 6.
Alternatively, it is guided along the guide rail 6 by contacting the outer peripheral wall 22. The base 25 of the traveling body 11 has an inner peripheral wall 21 side,
That is, in FIG.
3 and 34 are fixed, and the chain 9 is fixed via the chain attachment pieces 33 and 34. Therefore, the traveling body 11 is guided along the guide rail 6 by the traveling drive of the chain 9. Each roller 26, 27
Is selected to be smaller than the distance between the inner peripheral wall 21 and the outer peripheral wall 2, so that each of the rollers 26, 27 rotates while contacting the outer peripheral surface with one of the inner peripheral wall 21 and the outer peripheral wall 22. It will be guided along the guide rail 6.

The traveling body 1 is mounted on the inner peripheral wall 21 of the guide rail 6.
A notch 32 is formed at a position opposing the chain 9 including at least an upper inversion area S3 in which 1 is inverted from the upper extension area S1 to the lower extension area S2. Therefore, the upper sprocket 7 meshes with the chain 9 via the notch 32. Similarly, a notch is also formed in the lower inversion area S4 of the inner peripheral wall 21, and the lower sprocket 8 meshes with the chain 9 through this notch. In FIG. 11, the sprocket 7 is omitted for convenience of illustration.

FIG. 12 is a perspective view of the traveling body 11 showing a state in which the gripping member 12 is disposed at the retracted position after being turned over to the lower stretch region S2.
It is a perspective view of. The base 28 of the gripping member 12 extending coaxially with the rotation shaft 35 of the rollers 26 and 27 is formed to have a substantially T-shaped cross section, and the central projection 40 is outwardly in the width direction of the guide rail 6, that is, the upper side. It protrudes upward in the bridge region S1 and downward in the lower stretch region S2, and extends parallel to the rotation shaft 35. One end 29 a of the gripping member main body 29 is pivotally supported by a pin 30 at an end of the protrusion 28 of the base 28 near the traveling body 11. At one end 29a of the gripping member body 29,
A pair of holding portions 4 for holding the protrusion 40 of the base portion 28
1, 42 are formed extending in the longitudinal direction of the gripping member 29,
The pin 30 penetrates through the tip end of each of the holding portions 41 and 42 and the projection 40, whereby the gripping portion main body 29 is pivotally supported so as to be angularly displaceable. When the gripping member 12 is in the protruding position, the holding portions 41 and 42 of the gripping member body 29
The gripping members abut against the shoulders 43a and 44a formed on both sides of the projection 40, respectively, to prevent the grip member body 29 from being angularly displaced. That is, as shown in FIG. 11, when the gripping member main body 29 is located at the projecting position in the upper stretch region S1, the shoulders 43 a and 43 b are located below the pin 30, so that the gripping member main body 29 is Hanging below the projecting position is prevented.

The gripping member body 29 is pivotally supported so as to be angularly displaceable only around the axis of the pin 30 and is prevented from angular displacement in other directions, so that the gripping member 12 is gripped in a state where the gripping member 12 is disposed at the protruding position. The member body 29 is in a direction opposite to the traveling direction,
That is, in the upper stretch region S1, when the vehicle is traveling in the ascending direction A, the angular displacement in the ascending direction A is reliably prevented when the vehicle is traveling in the descending direction B. Thereby, the gripping member 12 arranged at the protruding position can stably support the user. When the gripping member 12 is not used, the upper stretch region S
In 1, the traveling body 11 travels in a state where the gripping member 29 is disposed at the retracted position where the gripping member 29 is angularly displaced upward.

When the vehicle 11 travels in the upwardly stretched area S1 in the ascending direction A and the vehicle 11 is turned 180 ° in the upper reversal area S3, the vehicle 11 moves the projection 40 of the base 28 downward as shown in FIG. Since the shoulder portions 43a and 43b are directed upward, the gripping member main body 29 hangs down by its own weight and is disposed at the retracted position. With such a simple configuration, the gripping member 12 is disposed at a protruding position when the gripping member 12 is inverted from the upper stretching region S1 to the lower stretching region S2.
2 is angularly displaced to the retracted position.

Similarly, the traveling body 11 assisting the descent of the user from the upper floor 3 to the lower floor 2 is moved to the lower inversion area S4.
Even when the gripping member 12 is reversed, the gripping member 12 is angularly displaced from the projecting position to the retracted position by its own weight to the retracted position. Further, in order to ensure such angular displacement due to its own weight, a weight may be provided at the other end 29b of the gripping member main body 29. As a result, the rotational moment of the gripping member 29 increases, and when the gripping member 29 is inverted, the angular displacement is reliably performed to the retracted position.

In a state where the gripping member 29 has been retracted to the retracted position in the lower tension region S2, the gripping member 29 descends in the descending direction B, and the lower inversion region S4
When the gripping member 12 is turned over to reach the upper-stretched area S1,
Is angularly displaced upward, and is placed in a retracted position substantially parallel to the wall surface 5. Therefore, in this state, the traveling body 1
When the vehicle 1 is driven to travel in the ascending direction A, it travels in the traveling direction A in the upper stretch region S1 in a state where the gripping member 12 is disposed at the retracted position. Therefore, the traveling body 11 not used
Is prevented from protruding to the protruding position and hindering the user of the stairs 4.

The gripping member 12 of the traveling body 11 which is not used
As shown in FIG. 13, a torsion spring 55 may be interposed between the base 28 of the gripping member 12 and the gripping member main body 29 so as to ensure that the is positioned at the retracted position. Torsion spring 55
Are arranged on both sides of the projection 40, respectively.
One end 55a is centered on the shoulder portion 43a of the base 28,
43b, the other end 55b is resiliently locked to the base ends of the holding portions 41, 42 of the gripping member body 29, and the gripping member 12 resiliently retracts in a natural state. Position. Therefore, the user holds the grip member 1
The second gripping member body 29 is used in a state where it is arranged at a protruding position against the elastic force of the torsion spring 55. This prevents the gripping member 12 of the traveling body in an unused state from being angularly displaced to a protruding position due to, for example, vibration or the like, which hinders a user of the stairs 4 not using the stairs climbing assist device 1 from going up and down. This is prevented. Instead of such a torsion spring 55, for example, a tension coil spring is interposed between the base 28 of the gripping member 12 and the gripping member main body 29, whereby the gripping member 12 is elastically disposed at the retracted position. You may comprise.

Further, the gripping member 12 of the traveling body 11 inverted from the lower suspension area S2 to the upper suspension area S1 may be automatically arranged at the projecting position from the retracted position. In this case, the guide member 50 is provided on the outer peripheral wall 22 of the guide rail 6 as shown in FIG. The guide member 50 is a plate-like body, is provided near the lower end of the upper stretch region S1, and is disposed on the outer side wall 23 of the guide rail 6 toward the downstream side in the rising direction A.
Guide surface 5 in the direction away from guide rail 6
When the traveling body 11 is driven to travel in the ascending direction A from the lower stretching area S2 to the upper stretching area S1 in a state where the gripping member 12 is located at the retracted position, 5
1, the gripping member main body 29 abuts, and the gripping member main body 29 is driven to travel in the ascending direction A.
The other end portion 29b is angularly displaced in a direction away from the guide rail 6 with the pin 30 provided at one end portion 29a as the center of angular displacement, whereby the gripping member body 29 is angularly displaced to its protruding position by its own weight.

By providing such a guide member 50, it is possible to automatically arrange the gripping member 12 at the protruding position when the traveling body 11 reaches the upper stretching area S1, so that the user can This eliminates the hassle of arranging the projector at the protruding position. The same indoor member as the guide member 50 is provided on the guide rail 6 near the upper end of the upper stretch area S1, and the lower stretch area S2 is moved from the upper stretch area to the upper stretch area in a state where the gripping member 12 is disposed at the retracted position. The gripping member 12 may be automatically guided to the projecting position when the traveling body 11 is driven to travel in the descending direction B by reversing to S1.

FIG. 15 is a perspective view showing a stair climbing assist device 60 according to another embodiment of the present invention, and FIG. 16 is a perspective view showing a state in which the gripping member main body 62 is angularly displaced from a projecting position to a retracted position. It is. The components corresponding to the stair climbing assisting device 1 shown in FIGS. 10 to 14 are denoted by the same reference numerals. The traveling direction of the traveling body 11 of the stair-climbing assisting device 60 is the ascending direction A, and is basically used as assistance for a user climbing the stairs 4. The pin 64 connecting the base 61 of the gripping member 12 and the gripping member main body 62 is parallel to the width direction of the guide rail 6, that is, perpendicular to the elevating directions A and B in the upper and lower stretch regions and parallel to the wall surface 5. Is provided. The base 61 of the gripping member 12 has a projection 63 extending parallel to the rotation axis 35 of each of the rollers 26 and 27 of the traveling body 11. One end 62 a of the gripping member main body 62 is
3 are sandwiched in the vertical direction, which is the width direction of the guide rail 6, and are provided at intermediate portions in the longitudinal direction of the protrusion 63 of the base 61, and the sandwiching portions 65, 66 and the protrusion 6 are provided.
3, the pin 64 is inserted, whereby the gripping member main body 62 is pivotally supported so as to be angularly displaceable in the traveling direction, that is, in the rising direction A in the stretching area S1.

The side of the gripping member body 62 opposite to the running direction is connected between the holding portions 65 and 66,
2, a concave portion 67 extending in the longitudinal direction is formed, and when the gripping member main body 62 is disposed at the projecting position, the projection 63 of the base 61 fits into the concave portion 67 and projects into the bottom wall 68 of the concave portion 67. The part 63 contacts. This prevents the grip member main body 62 disposed at the projecting position from being angularly displaced in the direction opposite to the traveling direction. As a result, even if the user pulls the gripping member 62 forward and applies force, the gripping member main body 62
Can be stably supported without angular displacement.

When the gripping member 12 is placed at the protruding position and is inverted from the upper stretching area S1 in the upper inversion area S3 and moves to the lower stretching area S2, the gripping is performed at the center in the circumferential direction of the upper inversion area S3. The direction in which the member body 62 can be angularly displaced is downward,
Due to its own weight, the gripping member body 62 hangs down and is angularly displaced to the retracted position. Therefore, the lower stay area S
In 2, the vehicle travels in a state where the gripping member main body 62 is disposed at a retracted position parallel to the lifting directions A and B. Therefore, since the gripping member main body 62 does not travel in a state of hanging downward in the lower suspension area S2, the distance between the guide rail 6 and the stairs 4 corresponding to the lower suspension area S2 can be reduced.

As described above, when the gripping member 12 of the stair climbing assist device 60 is also inverted from the upper stretch area S1 to the lower stretch area S2, the grip member body 62 is automatically angularly displaced to the retracted position by its own weight. However, by providing the evacuation guide members 70 and 71 on the guide rail 6 as shown in FIG. 15, the gripping member main body 62 can be more reliably guided to the evacuation position. The evacuation guide members 70 and 71 are provided at the upper floor 3 side end of the upper stretch area S <b> 1, and are provided in a pair on the outer wall 23 of the guide rail 6 with the notch 13 interposed therebetween. The evacuation guide members 70 and 71 are bent in an L shape,
When the free ends 70a and 71a face each other and the gripping member 12 travels in the ascending direction A in a state where the gripping member 12 is disposed at the protruding position, the tip of each of the holding portions 65 and 66 of the gripping member 62 of the traveling body 11 is The free ends 70a and 71a are in contact with each other. Therefore, the free ends 70a, 71a of the evacuation guide members 70, 71
When the traveling body 11 is driven to travel in the ascending direction A in a state in which the gripping members 65 and 66 are in contact with the holding portions 65 and 66 of the gripping member main body 62, the gripping member main body 62 is
Is guided in the direction opposite to the traveling direction, the other end 62a is angularly displaced toward the traveling direction, and the gripping member 12 is disposed at the retracted position. The gripping member 12 can be reliably retracted to the retracted position by such retracting guide members 70 and 71. In addition, the mounting positions of the retreat guide members 70 and 71 can be arbitrarily selected, whereby the gripping member 12 can be retreated at an arbitrary position.

In order to stably place the gripping member 62 at one of the protruding position and the retracted position, for example, when the angular displacement is closer to the retracted position side than the neutral position which is the central angular displacement position between the projected position and the retracted position. A two-position stabilizing spring is provided resiliently at the retreat position, and resiliently disposed at the protruding position when angularly displaced from the neutral position to the protruding position side. By angularly displacing 62 to the retracted position side from the neutral position, the gripping member main body 62 can be reliably disposed at the retracted position. Further, in use, the neutral position against the spring force of the two-position stabilizing spring is achieved. By angularly displacing the gripping member 62 more toward the protruding position, the gripping member 62 can be reliably disposed at the protruding position.

In place of the evacuation guide members 70 and 71, a gear centered on the pin 64 is fixed to the evacuation member main body 62,
An evacuation rack that meshes with the gear is provided on the guide rail 6,
The gripping member 62 may be configured to be angularly displaced to the retracted position when the gear meshes with the retractable rack. Further, a rack may be provided which meshes with the gear from the side opposite to the guide rail 6, and the gripping member 62 is angularly displaced from the retracted position to the projecting position when the gear meshes with the projecting rack. By providing such a retracting rack and a protruding rack, the gripping member 12 can be arranged at any position at the retracting position and the protruding position.

FIG. 17 is a perspective view showing a traveling body 76 of a stair climbing assist device 75 according to another embodiment of the present invention.
FIG. 18 is a cross-sectional view of the stair climbing assist device 75. In addition,
Components corresponding to the stair climbing assist device 1 shown in FIGS. 10 to 14 are denoted by the same reference numerals. Stair climbing assist device 7
The five bases 76 are formed in the shape of a rectangular parallelepiped, and eight rollers 77 projecting from the outer peripheral portion are provided so as to be angularly displaceable about a horizontal rotation axis perpendicular to the vertical directions A and B of the stairs 4. As shown in FIG. 18, each roller 77 contacts the outer peripheral wall 22 and the inner peripheral wall 21 of the guide rail 6 to guide the traveling body 76 along the guide rail 6. Therefore, the traveling body 76 travels along the guide rail 6 stably without rattling.

The cross-sectional shape of the guide rail 6 is not limited to a square tube, but may be a cylindrical shape with one cutout in the circumferential direction.

[0069]

As described above, according to the present invention, the running body is driven to move upward in the upper stretch region while the user holds the gripping member disposed at the projecting position, so that the stairs can be lifted. Even a user who has difficulty moving up and down can easily climb the stairs together with the traveling body by using his / her own power. Similarly, when descending the stairs, the user can easily descend the stairs by grasping the gripping member and lowering the traveling body in the upper stretch region, using his / her own power. In addition, since the gripping member is disposed at the retracted position in the lower suspension area, a plurality of traveling bodies are fixed to the rope, and the traveling body descends in the lower suspension area when the user is moving up the stairs. It is possible to prevent the gripping member from becoming an obstacle such as paying the user's feet. Also, unlike the conventional stair climbing assisting device including a suspension ring, the gripping member does not swing, and the user can stably climb the stairs while supporting the gripping member.

Further, according to the present invention, the gripping member main body is pivotally supported by the base with one end thereof being prevented from angular displacement in the direction opposite to the running direction, so that the user pulls the gripping member forward. Even if it does, angular displacement is prevented, and the user can be stably supported. In addition, since the traveling body is shifted by 180 ° from the upper stretch region to the lower stretch region, the gripping member body pivotally supported at one end is angularly displaced from the protruding position to the retracted position when the reversing is performed. In the stretch area, it is arranged at the retracted position. Therefore, the gripping member can be reliably disposed at the retracted position in the understretch region with a simple configuration.

According to the present invention, the control means responds to the detection output of the user detection means and drives the traveling body when the user comes to a predetermined position on the lower floor, so that the traveling means only travels when necessary. The body is driven, and the waste of energy can be suppressed.

[Brief description of the drawings]

FIG. 1 is a side view showing a stair climbing assist device 101 according to an embodiment of the present invention.

FIG. 2 is a front view of the stair climbing assisting device 101.

FIG. 3 is a cross-sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of the traveling body 111.

FIG. 5 is a right side view of the traveling body 111 as viewed from the right in FIG.

FIG. 6 is a left side view of the traveling body 111.

FIG. 7 is a side view showing a stair climbing assist device 170 according to another embodiment of the present invention.

FIG. 8 is a side view showing a stair climbing assist device 171 according to another embodiment of the present invention.

FIG. 9 is a side view showing a stair climbing assist device 172 according to another embodiment of the present invention.

FIG. 10 is a side view of a stair climbing assist device 1 according to another embodiment of the present invention.

FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 10;

FIG. 12 is a perspective view showing a traveling body 11;

FIG. 13 is a cross-sectional view of the stair climbing assisting device 1 having the gripping member 12 provided with the torsion spring 55.

14 is a front view showing a guide member 50. FIG.

FIG. 15 is a perspective view showing a stair climbing assist device 60 according to another embodiment of the present invention.

FIG. 16 is an illustration showing a state in which the gripping member main body 62 is angularly displaced from a protruding position to a retracted position.

FIG. 17 is a perspective view showing a traveling body 76 of a stair climbing assist device 75 according to another embodiment of the present invention.

FIG. 18 is a cross-sectional view of the stair climbing assisting device 75.

[Explanation of symbols]

1,60,75,101,170,171,172 Stair climbing assist device 2,102 Lower floor 3,103 Upper floor 4,104 Stairs 5,105 Wall 6,106 Guide rail 7,107 Upper sprocket 8,108 Lower sprocket 9, 109 chain 10, 110 traveling drive source 11, 111 traveling body 12, 112 gripping member 15 lower user detecting means 16 upper user detecting means 17, 117 control means 28, 61 base 29, 62, 118 gripping member main body 116 User detection means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B66B 9/08 A61H 3/00 E04F 11/02 E04F 11/18

Claims (3)

(57) [Claims] An endless guide rail is provided at a fixed position of a stair provided from a lower floor to an upper floor, and extends along a rising and lowering direction of the stair, and in a state of being stretched along the guide rail, A rope driven to travel in a predetermined traveling direction; a traveling drive source that drives the rope in a predetermined traveling direction; and a traveling body fixed to the rope and guided to travel along a guide rail. Is connected to the traveling body, and is provided so as to be displaceable to a projecting position perpendicular to the ascending / descending direction of the stairs and projecting in the horizontal direction and to a retracted position retracted from the projecting position, and is disposed at the retracted position at least in the lower tension region. A stair climbing assist device, comprising: a holding member to be moved. 2. The gripping member has a base fixed to a traveling body, and one end attached to the base in a state where angular displacement in a direction opposite to a traveling direction of the traveling body is prevented in an upper stretch region. The stair climbing assist device according to claim 1, further comprising a gripping member body pivotally supported. 3. A user detecting means for detecting a user at a predetermined position on a lower floor, and a traveling body travels from the lower floor to the upper floor in the upper stretch area in response to a detection output of the user detecting means. 3. A stair climbing assist device according to claim 1, further comprising control means for controlling the driving source for driving the stairs.