Wheelchair with anti-tip function

Abstract

We provide wheelchairs with fall prevention features to prevent falls among wheelchair users in nursing care facilities and similar settings. [Solution] In this invention, when the seat on which the user sits tilts beyond a predetermined angle, the protruding part of the movable section slides down into the recessed part of the support section and engages with it, and as the rear support section rotates on the rotation axis, the expandable member expands, thereby preventing the wheelchair from tipping over.

Description

Technical Field

[0001] The present invention is a wheelchair with a fall prevention function that can prevent and protect users from falling when watching over them in a nursing facility or outdoors.

Background Art

[0002] Conventionally, a stopper with casters that can be attached to a wheelchair has been attached to the rear of the wheelchair to prevent it from falling. With the casters provided on the wheelchair and the detachable fall prevention stopper, the strength is low, and there have been cases where the wheelchair has fallen and the user has been injured when the wheelchair has fallen more than a certain amount.

Prior Art Documents

Patent Documents

Patent Documents

Summary of the Invention

Problems to be Solved by the Invention

[0003] In the prior art document, a fall prevention bar is provided against the inclination of the wheelchair to the rear. However, this wheelchair has auxiliary wheels in order to be able to change the inclination to the rear as needed. As a result, the structure has become complicated. In addition, since auxiliary wheels are used for the fall prevention stopper, there is a possibility that the contact surface with the ground is small and it may slip off. The object of the present invention is to provide a wheelchair with a fall prevention function that has a simple structure and prevents injuries caused by the fall of the wheelchair.

Means for Solving the Problems

[0004] The present invention relates to a wheelchair with a fall prevention function to protect the user, comprising: a seat on which the user sits; a movable part provided below the seat and having a protrusion; a support part provided below the movable part and having a recess; a backrest on which the user leans when seated; a rear support part connected to the backrest; and a rotating shaft for rotating the rear support part. When the seat tilts beyond a predetermined angle, the protrusion of the movable part slides down into the recess of the support part and engages, and the rear support part rotates on the rotating shaft, preventing the wheelchair from tipping over. Furthermore, the movable part has an extendable member at its tip, and when the seat tilts beyond a predetermined angle, the extendable member expands to prevent tipping. [Effects of the Invention]

[0005] This can prevent falls among wheelchair users in nursing care facilities and similar settings. [Brief explanation of the drawing]

[0006] [Figure 1] Seating diagram for a wheelchair with fall prevention features. [Figure 2] Diagram illustrating the implementation of the anti-tip function of a wheelchair with an anti-tip feature. [Modes for carrying out the invention]

[0007] The embodiments for carrying out the invention will be described with reference to the drawings.

[0008] Figure 1 shows the external appearance of the wheelchair 8 with an anti-tipping function. Figure 1 consists of a seat 1 on which the user sits, a movable part 2 having a protrusion at the bottom of the seat 1, a support part 3 at the bottom of the movable part 2, a backrest 4 on which the user leans when seated, a rear support part 5 connecting the backrest 4, and a rotating shaft 6 that rotates the rear support part 5.

[0009] Furthermore, the movable part 2 has an extendable member 7 at its tip, and when the seat surface 1 tilts beyond a predetermined angle, the extendable member 7 extends. This makes it easier for the protrusion of the movable part 2 to smoothly fit into the recess of the support part 3.

[0010] An embodiment is illustrated in Figure 2. When the user's center of gravity shifts backward for any reason, and the wheelchair with the anti-tipping function begins to tip backward, the movable part 2 slides into the support part 3, and the recess provided in the support part 3 fits into the protrusion of the movable part 2, causing the rotation axis 6 to rotate and the rear support part 5 to slide backward, preventing tipping. [Explanation of Symbols]

[0011] 1 seat 2. Moving parts 3 support part 4 backrests 5 Back support part 6 rotation axes 7. Expandable Member 8 Wheelchairs with anti-tip features

Claims

1. A wheelchair with a fall prevention function to protect the user, comprising: a seat on which the user sits; a movable part provided below the seat and having a protrusion; a support part provided below the movable part and having a recess; a backrest on which the user leans when seated; a rear support part connected to the backrest; and a rotating shaft for rotating the rear support part, wherein when the seat tilts backward beyond a predetermined extent, the protrusion of the aforementioned movable part slides down into the recess of the support part and engages, and the rear support part rotates by the rotating shaft, thereby preventing the wheelchair from tipping over.

2. The wheelchair with an anti-tipping function further has an extendable member at the tip of the movable part, and the extendable member expands when the seat tilts beyond a predetermined angle, as described in claim 1.

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