JP3114987U - Wheelchair backrest structure - Google Patents

Abstract

Provided is a wheelchair that fits the upper bodies of many users with a simple operation even when users are constantly changing.
A wheelchair backrest 13 penetrates the epidermis 1, cushion body 2 and support body 3 at the center of the back side of the seat, is perpendicular to the seat, and has a notch having a height extending from the lumbar portion to the thoracic vertebra. A pair or two pairs of slit portions 4 are provided on the left and right center line of the wheelchair and approximately symmetrical with respect to the center line.
[Selection] Figure 2

Description

The present invention relates to a wheelchair backrest structure, such as a wheelchair or an electric wheelchair, or a wheelchair seat that is mounted on and integrated with an automobile as an automobile seat.

Functionality that can be adapted to many users with simple operations based on the development technology of the posture holding seat device for the handicapped person who is difficult to maintain the sitting posture and the data obtained through the anatomical clinic A wheelchair having a backrest is provided.

In recent years, the development of infrastructure such as public transportation, public facilities, and road barrier-free has made it easier for wheelchair users to move, which has encouraged wheelchair users to go out. .

Currently, various functional wheelchairs with self-propelled power performance, elevating performance, reclining function, seat height adjustment function, etc. have been developed, while fashionable wheelchairs that are particular about design, color and material The wheelchair is becoming more diversified.

In addition, there are many needs for users who sit for a long time in a fixed posture, and various wheelchair seat structures that can reduce user fatigue have been developed. It is becoming possible to fit the body.

However, on the other hand, even if a wheelchair equipped with an adjustment function is used, if the user changes constantly, it is still difficult to fit many users' bodies with one wheelchair. .

Under such circumstances, the present invention shows a backrest structure for a wheelchair that fits the body of many users with a simple operation.

The wheelchair backrest according to the present invention is adjusted by providing a slit portion perpendicular to the seat at the center of the back of the seat.

The slit part is a surface to be seated and a notch to the support, and is approximately tens of centimeters high from the lumbar part to the thoracic vertebra, and is substantially symmetrical with respect to the center part and center line of the wheelchair. About one or two pairs are provided.

That is, the slit portion on the back surface is manufactured so as to approximately match the portion of the seating surface that supports the spine and the portion that supports the spine.

Next, a belt that supports the back surface in the horizontal direction is attached to the back frame of the wheelchair so as to cross the back frame.

This belt has a belt stopper such as a metal or resin buckle, or a hook-and-loop fastener so that the length of the belt can be adjusted. Adjust the deflection.

Furthermore, hook-and-loop fasteners are sewn together on the back surface of the back support with slits and the front surface of the belt surface.

According to such a configuration, when the user sits on the wheelchair, the slit portion on the back surface expands and changes along the user's body shape, and then the hook and loop fastener provided on the back surface of the backrest and the front portion of the belt surface Is fixed by fitting.

Since it is a structure as mentioned above, even if it is a case where the user of a wheelchair changes frequently, it is possible to make it fit to an individual body by simple adjustment.

The backrest according to the present invention can have the following effects.
○ It can be applied using the current wheelchair frame as it is.
○ It is possible to fit the shape of many users.
○ Since the spine can be securely held, the user's posture is safe when boarding.
○ The applicable range can be expanded by changing the slit length and number of installations.
○ Adjustment work to fit the body is easy and reliable.
○ Because there are few structural members, the manufacturing cost is low.

The best mode for carrying out the invention will be described in detail based on the following examples.

1 is a front perspective view of a wheelchair according to the present invention, FIG. 2 is a front view of a backrest, FIG. 3 is a cross-sectional view along A1-A2 of FIG. 2, and FIG. Fig. 5 is an oblique rear view of the back support, Fig. 6 is an embodiment of the belt, Fig. 7 and Fig. 8 are top views of the back support in the seated state, and a central longitudinal section. FIG. 9 and FIG. 10 show a front perspective view and a perspective view showing an embodiment application example.

The backrest 13 of this embodiment shown in FIG. 1 is attached to the back side of the body frame 14 of the wheelchair.

As shown in FIGS. 2 and 3, the backrest 13 is composed of the skin 1, the cushion body 2, and the support body 3, and the outer peripheral terminal is folded back and sewed into a bag shape using the sewing thread 6. It is inserted and fastened to wrap it.

The cushion body 2 is formed of a cushioning material such as slab urethane, but may be omitted and not necessarily required when the skin 1 having a function as a cushioning material is used. .

In addition, if the tensile strength and the like of the skin 1 is increased and the strength performance provided to the support 3 is also used, the back support 13 may be composed of the skin 1 alone, and particularly the back support 13 is provided with air permeability. If so, it is effective to implement.

Similarly, the back support 13 is provided with the slits 4 at positions where the slits 4 which are cuts pass through substantially the center lines on the left and right of the wheelchair, and at positions which are symmetrical with respect to the center lines.

Since it is as above-mentioned, this slit part 4 will be normally provided three, However, You may add in the position left-right symmetric with respect to the centerline of a wheelchair. In general, an odd number is provided.

As shown in FIG. 3, the slit portion 4 in this embodiment may be provided by physically cutting the skin 1 with a blade or the like. However, as shown in the application example of FIG. If the reinforcing cloth 5 is fastened using the sewing thread 6 in order to ensure the safety, the strength is further increased.

Furthermore, in the frontage direction, divide and sew components in advance, such as slit part from the left end, slit part to slit part, slit part to slit part, slit part to right terminal, and finally remove the slit part. It can be stitched together.

As shown in FIG. 2, the height dimension of the slit portion in the vertical direction may be set optimally within the range of the vertical dimension of the backrest 13, and the manufacturing means thereof is the same as the frontage direction.

Since the notch is provided in the backrest 13 as described above, the slit portion 4 swells and bends upon receiving a load when the user is seated.

The main point of the present invention is to obtain the backrest 13 along the body shape of each user by utilizing the fact that the slit portion 4 swells and bends, and the adjustment mechanism thereof will be described later with reference to FIGS. 9 will be described in detail.

As shown in FIG. 5, the back surface of the backrest 13 is provided with a belt 10 fastened so as to wrap the body frame 14, and when the backrest 13 is moved backward, The front portion of the belt 10 comes into close contact with the backrest 13 and restrains the flexure of the backrest 13.

As shown in FIG. 6, the belt 10 has both ends fixed to the main body frame 14, and in this embodiment, a belt stopper 11 is sewn to one end, and the belt is fixed from the other end. The tool 11 is hidden and formed in a loop shape.

The length of the loop is adjusted by pulling or loosening the end of the belt 10 from the other end of the belt stopper 11, and the amount of bending of the backrest 13 is controlled by these adjustments.

Although the number of belts 10 can be set arbitrarily, three belts 10 are provided in this embodiment in order to maintain the seating posture of the user.

Further, a hook-and-loop fastener 9 is sewn on the front surface of the belt 10, and the hook-and-loop fastener 9 is fitted to the hook-and-loop fastener 9 provided on the back surface of the backrest 13 so that the backrest 13 is fastened and used. It is a mechanism to maintain the sitting posture of the person.

Next, the effect of using the backrest 13 of the present invention will be specifically described.

7 and 8, when the user is seated as shown in the top view and the central longitudinal sectional view of the back rest portion in the seated state according to the present invention, a load is applied to the back rest 13 according to the body shape of the upper body. Although the back support 13 is provided with a cut, the load distribution based on the original shape of the back support 13 and the body shape of the upper support 13 and the load applied when the user is seated At different portions, the slit portion 4 swells and bends, and tries to disperse the load on an average.

The swelling / deflection of the slit portion 4 appears according to the difference in the shape of the back around the waist, abdomen, and chest and the cubic curved surface of the spine 19 and varies as the user changes.

The back support 13 that has absorbed the solid difference in the slit portion 4 has changed into a shape that fits the user optimally. In this state, the belt 10 can be adjusted without slack, and the back of the back support 13 can be adjusted. The hook-and-loop fastener 9 provided and the hook-and-loop fastener 9 provided on the front surface of the belt 10 are fitted and fixed.

In the back support 13 of the present invention, as shown in FIG. 8, the optimal sitting posture for the user can be obtained by setting the height of the slit portion 4 from approximately the lumbar vertebra to approximately the thoracic vertebra. To.

Furthermore, as in the application example shown in FIG. 9, the slide fastener 7 can be sewn and placed in the slit portion 4, and the height of the slit portion 4 can be adjusted by the slider 8.

In this application example, since the slide fastener 7 is sewn on the slit portion 4, the height of the plurality of slit portions 4 can be partially changed, or the slit portion 4 can be closed. Can also be used, and the degree of freedom of adjustment is expanded.

In the application example shown in FIG. 10, the backrest 13 of the present invention is used for a high-back type wheelchair, and when the upper body of the user is not stable or when the back support is required, It is extremely effective.

In general, a wheelchair structure that can stably hold a user's upper body is often complex and large, and it is difficult to place the wheelchair when moving in a small vehicle with no placement space. However, the wheelchair of the present invention is compatible with the simple structure and compact dimensions.

Furthermore, the wheelchair of the present invention can reduce the fatigue of a user who sits for a long time in a constant posture by the adjustment function.

As described above, it has been difficult to reproduce a wheelchair that can fit the body of many users with a simple structure. However, the backrest 13 according to the present invention has a simple structure and operation. The wheelchair back support structure which can be applied with is shown.

The back support structure of the present invention can be used for an in-vehicle auxiliary seat, a bathing auxiliary device for a physically handicapped person, and a standing auxiliary seat.

It is a front perspective view of the wheelchair concerning the present invention. It is a front view of the backrest which concerns on this invention. It is A1-A2 sectional drawing of FIG. It is a front view which concerns on the application example of this invention. It is an oblique rear view of the backrest according to the present invention. It is the perspective view which showed the Example of the belt used for this invention. It is a top view of the backrest part in the seating state which concerns on this invention. It is a center longitudinal cross-sectional view of the backrest part in the seating state which concerns on this invention. It is the front perspective view which showed the example of implementation which concerns on this invention. It is the perspective view which showed the implementation application example which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Skin 2 Cushion body 3 Support body 4 Slit part 5 Reinforcement cloth 6 Sewing thread 7 Slide fastener 8 Slider 9 Surface fastener 10 Belt 11 Belt stopper 12 Seat surface 13 Backrest 14 Body frame 15 Upper body 16 Lumbar vertebra 17 Spine 18 Thoracic vertebra

Claims (6)

In a backrest of a wheelchair seat composed of an epidermis, a cushion body, and a support, which is fixed to the back frame, penetrates the epidermis, the cushion body, and the support and is perpendicular to the backrest The wheelchair seat is provided with an arbitrary length in the range of the maximum backrest height, and approximately one on the left and right center line and at least a pair of slits substantially symmetrically with respect to the center line. In a backrest of a wheelchair seat composed of at least an epidermis fixed to the back frame, it passes through the backrest and is perpendicular to the backrest, one on the left and right center line, and the center A wheelchair seat provided with at least a pair of slits substantially symmetrically with respect to the line and having an arbitrary length within the range of the maximum backrest height. The wheelchair seat according to claim 1 or 2, wherein at least one annular belt wound around and fitted to the left and right sides of the back wheelchair frame is provided on the back surface of the backrest, and is fastened together with the cut slit portion. The wheelchair seat according to claim 3, wherein a hook-and-loop fastener is sewn and fastened to each other on the back surface of the back support provided with the slit slit portion and the front portion of the annular belt. The wheelchair seat according to any one of claims 1, 2, 3, and 4, wherein a slide fastener corresponding to a length of the slit slit is sewn to at least a pair of slit slits. A wheelchair seat according to any one of claims 1, 2, 3, 4, and 5, and a simple seat device for mounting on a transport device having the same configuration.

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