JPH09192173A - Hood for wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hood for a wheelchair satisfactory in appearance without obstructing the rear visual field of a sitting person at the time of storing the hood. SOLUTION: This hood is constituted of a first slider 19 slidably engaged to first guides 17 and 18 arranged on the back surface of a seat back, a front bone 24 whose base end part is rotatably attached to the first slider 19, a rear bone 20 whose base end part is attached to the first slider, a second slider fixed to the intermediate part of the bone 24, an arm 26 whose base end part is rotatably attached to the lower side of the seat back 12 for which the second slider is slidably engaged to a tip part side, third guides 28 and 29 arranged side by side to the first guides 17 and 18, weight 30 and 31 slidably engaged with the third guides 28 and 19 and wires 36 and 37 whose one end part is locked to the weights 30 and 31 and other end part is locked to the front bone 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair hood, and more particularly to a wheelchair hood having a storage mechanism.

[0002]

2. Description of the Related Art For example, as shown in FIG. 8, a hood 4 for covering an upper portion of a seated person 3 may be provided on the back surface of a seat back 2 of an electric wheelchair 1.

The hood 4 has a posterior bone 5 whose base end is fixed to the back surface of the seat back 2, a front bone 6 whose base end is rotatably provided on the posterior bone 5, and a rotation of the front bone 6. It consists of a hood cloth 7 provided between the end and the tip of the posterior bone 5.

When the hood 4 is unnecessary, the front bone 6 is stored by rotating the front bone 6 in the direction of the rear bone 5, as shown in FIG.

[0005]

However, the hood for wheelchairs having the above-described structure is aesthetically unfavorable because the hood is located behind the seated person's head when the hood is in the retracted state, and the rearward view of the seated person is reduced. There is a problem of blocking.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wheelchair hood which is aesthetically pleasing when the hood is stored and which does not hinder the rear view of a seated person.

[0007]

A wheelchair hood according to the present invention, which solves the above-mentioned problems, is provided on the back surface of a seat back of a wheelchair, and has a first guide extending in the vertical direction and the first guide. A first slider slidably engaged, a front bone having a proximal end rotatably attached to the first slider, and a posterior bone having a proximal end attached to the first slider, A hood cloth having the one end attached to the front bone and the other end attached to the posterior bone, a second slider fixed to an intermediate portion of the front bone, and a base end portion of the seatback. An arm rotatably mounted on the lower side and having a second guide formed on the tip side to slidably engage the second slider, and a third arm provided in parallel with the first guide. A guide and a first wire guide provided on the upper side of the seat back,
A second wire guide provided on the first slider, a third wire guide provided on a rotating end of the posterior bone, and a weight slidably engaged with the third guide, One end is locked to the weight, an intermediate part is slidably in contact with the first wire guide, the second wire guide and the third wire guide, and the other end is locked to the front bone. It consists of a wire.

In the wheelchair hood of the present invention, when the hood is used,
The first slider is above the first guide and the weight is above the third guide. In addition, the front bone is in the most inclined state.

When the first slider is moved downward along the first guide, the front bone first rotates rearward (in the direction toward the back bone). When the front bone rotates to some extent, the rotation moment in the direction of closing the hood that acts on the front bone due to the weight of the weight is greater than the rotation moment in the direction that opens the hood that is generated by the weight of the front bone. Due to the weight of the weight, the hood is rotated and moved toward the posterior bone to close the hood.

At this time, the arm also rotates with the movement of the anterior bone, and the second guide and the first guide of the arm are substantially parallel to each other. When the first slider is further moved downward, the posterior bone and the front bone move downward with the hood closed until the slider contacts the lower end of the first guide, and the seatback Move to the back of.

According to this structure, the front bone, the back bone, and the hood cloth are integrated together in a state in which the front bone is close to the back bone and the hood is closed, and the front bone, the back bone, and the hood cloth move downward along the first guide. Since it moves and moves to the back of the seat back, it is aesthetically pleasing when the hood is stored and does not hinder the seated person's rear view.

Here, it is desirable that the first slider is driven by a driving means. An example of this drive means includes a motor, a screw rod rotatably driven by the motor, and a nut member provided on the first slider and screwed to the screw rod.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a rear view showing the main part of the wheelchair hood according to the first embodiment of the present invention when the hood material is removed.
2 is a side view of FIG. 1, FIG. 3 is a side view of a wheelchair using the mechanism shown in FIG. 1, FIG. 4 is a view for explaining a hood usage state in FIG. 3, and FIG. 5 is a hood member removed in FIG. FIG. 6 is an enlarged view of a main part, FIG. 6 is a diagram for explaining a state between a hood used state and a hood stored state in FIG. 3, and FIG. 7 is an enlarged view of a main part of FIG.

First, the overall structure will be described with reference to FIG.
11 is a wheelchair. On the back surface of the seat back 12 of the wheelchair, a mechanism for housing a hood 14 that covers the upper portion of the seated person 13 is provided.

Next, this mechanism will be described with reference to FIGS. 1 and 2. Reference numeral 15 is an upper base plate provided on the upper rear surface of the seat back 12, and 16 is a lower base plate provided on the lower rear surface of the seat back 12. First guides 17 and 18 extending in the vertical direction are provided between the upper base plate 15 and the lower base plate 16.

A first slider 19 is slidably engaged with the first guides 17, 18. The base end portion of the rear bone 20 of the hood 14 is fixed to the first slider 19. A motor 22 having a screw rod 21 attached to the output shaft side is provided on the lower base plate 16. First
The slider 19 is provided with a nut member 23 that is screwed into the threaded rod 21, and when the motor 22 is driven, the first slider 19 moves vertically along the first guides 17 and 18. It has become. In addition, the first slider 1
A front end portion of the front bone 24 is rotatably attached to the front bone 9, and the front bone 24 is rotatable in the front-rear direction with respect to the first slider 19.

Further, the front edge portion of the hood cloth 25 is attached to the front bone 24, and the rear edge portion thereof is attached to the rear bone 20. Reference numeral 26 is an arm having a base end portion rotatably attached to the first guide 17 and an elongated hole 26a as a second guide formed at the tip end portion. A second slider 27 fixed to the middle portion of the front bone 24 is slidably engaged with the elongated hole 26a of the arm 26.

Between the lower base plate 16 and the upper base plate 15, there are provided third guides 28 and 29 which are provided so as to be aligned with the first members 17 and 18. Weights 30 and 31 are slidably engaged with the third guides 28 and 29.

Pulleys 32 and 33 as first wire guides are provided near the third guides 28 and 29 of the upper base plate 15, and a second slider is provided on the first slider.
Pulleys 34 and 35 are provided as wire guides.

An outer cable 36a and an inner cable 36 are provided between the front bone 24 and the weights 30 and 31.
a flexible wire 36 consisting of b, an outer cable 37a (not shown) and an inner cable 37b (not shown)
And a flexible wire 37 consisting of

One ends of the outer cables 36a, 37a of the flexible wires 36, 37 are fixed to the tip of the posterior bone 20, and the other ends are fixed to the first slider 19. Then, one end of the inner cable 36b, 37b of the flexible wire 36, 37 is attached to the front bone 24
The other end is guided by pulleys 35, 34 as second wire guides and pulleys 32, 33 as first wire guides, and weights 30, 31
It is connected to the. Here, the outer cables 36a, 37 of the flexible wires 36, 37 fixed to the posterior bone 20
The other end of a functions as a third wire guide.

Next, the operation of the above configuration will be described. As shown in FIGS. 4 and 5, when the hood is used, the first slider 1
9 is on the upper part of the first guide 17, and the weights 30, 3
1 is above the third guides 28,29. Further, the front bone 24 is in the most inclined state.

The motor 22 is driven to drive the screw rod 21.
Is rotated, the first slider 19 moves the first guide 2
Move down along 8,29. First, the front bone 24 rotates backward (in the direction toward the rear bone). When the front bone 24 rotates to some extent, the weight 30,
Due to the own weight of 31, the rotational moment acting on the front bone 24 in the direction of closing the hood is superior, and the front bone 24 has the weight 3
Due to its own weight of 0 and 31, it rotates in the direction of the posterior bone 20, and the hood is closed as shown in FIGS.

At this time, the weights 30 and 31 move to the vicinity of the lower base plate 16. Further, the arm 26 also rotates with the movement of the front bone 24, and the elongated hole 26 of the arm 26
a and the first guides 17 and 18 are substantially parallel to each other.

When the first slider 19 is further moved downward from the state shown in FIGS. 6 and 7, the hood 14 is closed until the first slider 19 contacts the lower base plate 16, and the rear bones are closed. 20 and the front bone 24 move downward,
The state of moving to the back of the seatback 12 is shown in FIGS. 1 to 3.

According to this structure, the front bone 24 approaches the rear bone 20, and the top 14 is closed.
The rear bones 20 and the top cloth 25 are integrated to form the first guide 17,
Since it moves downward along 18 and moves to the back of the seat back 12, it is aesthetically pleasing when the hood is stored and the seated person 1
It does not hinder the rear view of 3.

The present invention is not limited to the above embodiment. In the above-mentioned embodiment, the opening and closing is electrically operated, but it may be configured to be performed manually. in this case,
A brake mechanism that prohibits the movement of the front bone is required.

[0028]

As described above, according to the present invention, the front bone, the back bone, and the hood cloth are integrated into the first guide when the front bone is close to the back bone and the hood is closed. It moves downward along the line and moves to the back of the seat back, so when storing the hood,
It is possible to realize a wheelchair hood that is aesthetically pleasing and that does not obstruct the rear view of the seated person.

[Brief description of the drawings]

FIG. 1 is a rear view showing a main part of a wheelchair hood according to a first embodiment of the present invention when a hood material is removed.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view of a wheelchair using the mechanism shown in FIG.

FIG. 4 is a diagram illustrating a use state of the hood in FIG.

5 is an enlarged view of a main part of FIG. 4 with a hood member removed.

FIG. 6 is a view for explaining a state between a hood used state and a hood stored state in FIG.

7 is an enlarged view of a main part of FIG. 6 with a hood member removed.

FIG. 8 is a configuration diagram of a conventional wheelchair hood.

9 is a diagram illustrating a stored state of the hood in FIG.

[Explanation of symbols]

 12 seat back 17,18 first guide 19 first slider 20 posterior bone 24 front bone 26 arm 26a elongated hole (second guide) 27 second slider 28,29 third guide 30,31 weight 36, 37 Flexible wire

Claims (3)

[Claims] 1. A first guide that is provided on the back surface of a seat back of a wheelchair and extends in the vertical direction, a first slider that slidably engages with the first guide, and the first slider. A front bone whose base end is rotatably attached to the slider, a rear bone whose base end is attached to the first slider, the one end is the front bone, and the other end is the front bone. A top cloth attached to the posterior bone, a second slider fixed to an intermediate portion of the anterior bone, and a base end portion rotatably attached to the lower side of the seat back,
An arm having a second guide slidably engaged with the second slider on a tip end side thereof, a third guide juxtaposed with the first guide, and an upper side of the seat back. A first wire guide provided on the first slider, a second wire guide provided on the first slider, a third wire guide provided on a rotating end of the posterior bone, and a third guide A weight slidably engaged with the one end, one end of which is locked to the weight, and an intermediate portion of the weight.
Wire guide, the second wire guide and the third wire guide
A wheelchair hood comprising: a wire slidably contacting the wire guide and the other end of which is locked to the front bone. 2. The wheelchair hood according to claim 1, wherein the first slider is driven by a driving means. 3. The driving means is a motor, a screw rod rotatably driven by the motor, and a nut member provided on the first slider and screwed to the screw rod. The hood for wheelchairs according to Item 1 or 2.