TW201817405A - Dynamic wheelchair tilting adjustment device capable of spreading weight of user's lower limbs and releasing waist pressure to prevent complication problems caused by sitting too long - Google Patents

Abstract

The present invention provides a dynamic wheelchair tilting adjustment device, which comprises a seat assembly and an air bag assembly. The seat assembly comprises a seat base and a seat back, wherein the seat back is disposed on the seat base and the inferior angle formed between the seat back and the seat base is greater than 140 degrees and less than 155 degrees. The air bag assembly is disposed on the seat assembly and comprises an inflating pump, a femur adjusting air bag, and a lumbar adjusting air bag, wherein the inflating pump is disposed on the seat assembly, the femur adjusting air bag is disposed on the seat base, and the lumbar adjusting air bag is disposed on the seat back. The dynamic wheelchair tilting adjustment device of the present invention employs the femur adjusting air bag and the lumbar adjusting air bag such that the femur adjusting air bag may be inflated and expanded to distribute the weight of the user's lower limbs and the lumbar adjusting air bag may be inflated and expanded to push forward the user's lumbar for releasing the waist pressure, so as to prevent the complication problems caused by sitting too long.

Description

Dynamic adjustment device for backward leaning wheelchair

The present invention relates to a dynamic adjustment device for a backward tilted wheelchair, in particular to a dynamic adjustment device for a backward tilted wheelchair that can avoid complications of lower back pain caused by a long-term sitting by a wheelchair user.

Nowadays, most wheelchair users are patients suffering from lower limb diseases or elderly people with weak lower limb muscles or degraded muscles. People who use wheelchairs have many problems in their lives. In addition to the inconvenience of movement, the most troublesome is the long-term sitting in the wheelchair. Cumulative complications, and the continuous stress accumulated in the lumbar spine makes wheelchair users often complicate the symptoms of lower back pain. Lower back pain is a common back musculoskeletal injury and belongs to the soft tissues of the lumbar intervertebral disc, muscles, tendons and fascia. Stress caused by abnormal time, the latent effect produced, and discomfort and pain.

The existing method that can improve the lower back pain of wheelchair users is to ride a dynamic wheelchair with a four-link system. The dynamic wheelchair uses a four-link mechanism to control the back movement of the chair back and forth to achieve the effect of adjusting the dynamic sitting posture. The utility model comprises a chair frame, a chair seat, a four-link mechanism, a chair back, two front wheels and two rear wheels. The seat is provided on the chair frame. The four-link mechanism is provided on the chair seat. The lever mechanism includes a bottom lever, an adjustment lever, a uniform moving member, a horizontal lever and a linkage lever. The bottom lever is connected to the seat, one end of the adjustment lever is rotatably connected to the center of the bottom lever, and the actuator is connected. The bottom rod and the adjustment rod, the actuating member can adjust the acute angle between the adjustment rod and the bottom rod, the horizontal rod is connected to the adjustment rod, the link rod connects the horizontal rod and the bottom rod, and the seat back It is set in the center of the horizontal rod, the two front wheels are set on the chair frame, and the two rear wheels are set on the chair frame. When the user needs to change the sitting position, the actuator is adjusted by the adjustment rod and the bottom rod. Acute angle changes allow the user's pelvic angle to rotate forward, Lumbar push forward, push the appropriate help before perfusion disc nutrition, and reduce the risk of degenerative disc, but also to relieve stress accumulated in the persistent lumbar spine.

The dynamic wheelchair with the four-link system described above can avoid lower back pain by adjusting the dynamic sitting posture. The dynamic seat can adjust the rotation of the pelvis from left to right and front to back to alleviate the continuous stress effect, which is helpful for perfusion and prevention of intervertebral disc nutrition. The risk of degenerative discs, however, because dynamic seats require complex mechanisms and complicated control systems, dynamic wheelchairs are expensive to manufacture, not every wheelchair user can use them, and many users still have to use a wheelchair for long periods of time. Suffering from complications.

The main purpose of this creation is to provide a reclining wheelchair dynamic adjustment device to avoid the problems of low back pain caused by prolonged sitting and the expensive manufacturing of dynamic seats.

In order to achieve the purpose of front disclosure, this creative post-tilt wheelchair dynamic adjustment device includes: a seat assembly including a seat frame, a seat, a seat back, two front wheels, two rear wheels, and a support frame, the The seat is provided on the seat frame, the seat back is provided on the seat frame, and the bad angle between the seat back and the seat frame is greater than 140 degrees and less than 155 degrees, and the two front wheels are arranged on the seat frame. On both sides of the front end, the two rear wheels are provided on both sides of the rear end of the chair frame, and the support frame is provided on the rear end of the chair frame; an airbag module is provided on the seat module, and the airbag module includes an inflation A pump, a femoral adjustment airbag and a lumbar spine adjustment airbag are provided on the chair frame, the femoral adjustment airbag is disposed on the seat back, the lumbar adjustment airbag is disposed on the seat, the femoral adjustment airbag and the lumbar spine The adjusting airbags are respectively connected to the inflatable pump by a catheter.

This creation of a rearwardly adjustable wheelchair dynamic adjustment device uses the femoral adjustment airbag and the lumbar adjustment airbag to inflate and deflate, and the inflation and expansion of the femoral adjustment airbag prevent the user from slipping out of the backwardly inclined wheelchair dynamic adjustment device, and It can disperse the weight of the user's lower limbs, or adjust the inflation of the airbag through the lumbar spine to push the user's lumbar spine upward to relieve the continuous pressure on the waist, and to make the angle of the lumbar spine and pelvis significantly rotate to avoid lower back pain. It solves the problem of low back pain complications caused by users sitting for a long time. In addition, because the structure of the reclining wheelchair dynamic adjustment device is simple and does not require complicated component combinations and complex control systems, the reclining wheelchair dynamic adjustment The device is cheaper to manufacture and can be used by every wheelchair user.

As shown in FIG. 1 and FIG. 2, a preferred embodiment of the dynamic adjustment device for the backward tilt wheelchair is disclosed. As can be seen from the figure, the dynamic adjustment device for the backward tilt wheelchair includes a seat assembly 10 and an airbag assembly 20.

The seat assembly 10 includes a seat frame 11, a seat seat 12, a seat back 13, two front wheels 14, two rear wheels 15, and a support frame 16. The seat seat 12 is disposed on the seat frame 11 and the seat back. 13 is provided on the seat 12, and the bad angle between the seat back 13 and the seat 12 is greater than 140 degrees and less than 155 degrees, among which the best bad angle is 150 degrees, and the two front wheels 14 The two rear wheels 15 are provided on both sides of the front end of the chair frame 11, the support frame 16 is provided on the rear end of the chair frame 11.

The airbag assembly 20 is provided in the seat assembly 10. The airbag assembly 20 includes an inflatable pump 21, a femoral adjustment airbag 22, and a lumbar adjustment airbag 23. The inflatable pump 21 is provided in the chair frame 11, and the femur is adjusted. The airbag 22 is provided on the seat 12, the lumbar adjustment airbag 23 is provided on the back 13, the femoral adjustment airbag 21 and the lumbar adjustment airbag 23 are connected to the inflatable pump 21 by a catheter 24.

The inflatable pump 21 of the airbag module 20 is electrically connected to a control unit 30. The control unit 30 is disposed on the chair frame 11 and controls the inflatable pump 21 to inflate the femoral adjustment airbag 22 by the control unit 30. And the lumbar spine adjustment balloon 23.

Through the experiments of the pressure-sensing system and the 3D ultrasonic spatial positioning device, the creative backward tilt wheelchair dynamic adjustment device can compare the effects of the femoral adjustment airbag 22 and the lumbar adjustment airbag 23 with each other or bring the user to use the rear Impact of tilting wheelchair dynamic adjustment device. The pressure sensing system uses pressure pads to sense the pressure on the hips and back of the user of a reclining wheelchair dynamic adjustment device. The contact area, average pressure, and peak pressure can be obtained. The 3D ultrasonic space The positioning device uses an ultrasonic three-dimensional spatial positioning system to locate the bending angle of the spine of the user using the reclining wheelchair dynamic adjustment device, so as to judge the feeling and impact of the femoral adjustment airbag 22 and the lumbar adjustment airbag 23 on the user.

As shown in FIG. 2, this is an initial state of the dynamic backward adjustment wheelchair dynamic adjustment device. The user uses the initial state of the dynamic backward adjustment wheelchair dynamic adjustment device. The angle of inferior angle clamped by the seat 12 is greater than 140 degrees and less than 155 degrees. The user can use the reclining wheelchair dynamic adjustment device to disperse the user's weight and relieve the user's concentrated stress on the user's ischium. The support frame 16 can prevent the reclining wheelchair dynamic adjustment device from overturning when the user's weight is concentrated on the seat back 13.

As shown in FIG. 2 and FIG. 3, this is an initial state of the dynamic backward adjustment wheelchair dynamic adjustment device. The user uses the initial state of the dynamic backward adjustment wheelchair dynamic adjustment device and uses the control unit 30 to control the airbag module 20. Inflatable pump 21 which fills the femoral adjustment airbag 22 with air, the femoral adjustment airbag 22 is inflated due to being filled with air, and the thigh of the user will rise as the femoral adjustment airbag 22 swells, dispersing the user The weight of the lower limbs can also prevent the wheelchair user from gliding forward when the angle of the bad angle between the seat back 13 and the seat 12 is large, so as to prevent the user from sliding out of the backward tilting wheelchair dynamic adjustment device.

As shown in FIG. 2 and FIG. 4, this is an initial state of the dynamic backward adjustment wheelchair dynamic adjustment device. The user uses the initial state of the dynamic backward adjustment wheelchair dynamic adjustment device and uses the control unit 30 to control the airbag module 20. Inflatable pump 21 which fills the lumbar adjustment airbag 23 with air, the lumbar adjustment airbag 23 is inflated due to being filled with air, and the user's back will swell to the front of the user as the lumbar adjustment airbag 23 inflates. It can be inferred that through the contact area of the pressure sensing system and the average pressure change, it can be inferred that the lumbar adjustment airbag 23 has a significant contact area on the user's back and relieves the persistent stress on the back.

As shown in Fig. 2 and Fig. 5, this is an initial state of the dynamic adjustment device of the backward tilt wheelchair and an operation state in which the femoral adjustment airbag 22 and the lumbar adjustment balloon 23 are inflated at the same time. The user uses the original backward tilt wheelchair A dynamic adjustment device controls the inflation pump 21 of the airbag assembly 20 to inflate through the control unit 30. The femoral adjustment airbag 22 and the lumbar adjustment airbag 23 are filled with air at the same time. The femoral adjustment airbag 22 is inflated and the user's thigh rises. The adjustment of the airbag 23 bulges and pushes the lumbar spine forward, so that the femoral adjustment airbag 22 and the lumbar adjustment airbag 23 can relax the user's ischium and lumbar spine at the same time.

In addition, it can be inferred from the experiments of the 3D ultrasonic spatial positioning device that the lumbar spine adjustment airbag 23 and the femoral adjustment airbag 22 can give a good angle change to the lumbar spine and the pelvis when inflated at the same time. The state has brought the angle of inferior angle clamped by the user's lumbar spine and pelvis close to the level. Therefore, when the lumbar vertebra adjustment airbag 23 and the femoral adjustment airbag 22 are inflated and inflated, the range of influence will not only affect the lumbar lordosis, but also promote the pelvis. The forward rotation can make the average and standard deviation of the lumbar spine angle change more significant, help to distribute the continuous stress applied to the lumbar spine, and reduce the chance of lower back pain.

To sum up, the dynamic adjustment device for the backward tilt wheelchair can be inflated and deflated by the femoral adjustment airbag 22 and the lumbar adjustment airbag 23, and the femoral adjustment airbag 22 is inflated to make the user's thigh rise, and the lumbar adjustment airbag 23 is inflated. Pushing the lumbar vertebra forward, soothing the pressure on the ischium and lumbar vertebra of the user, and transferring the continuous stress applied to the lumbar vertebra, which can avoid the problem of lower back pain of the user, and avoid the cumulative complications of the user's lower limb sitting for a long time In addition, due to the simple structure of the reclining wheelchair dynamic adjustment device, no complicated components and complex control systems are required. Therefore, the cost of manufacturing the reclining wheelchair dynamic adjustment device is relatively low, allowing everyone to use the wheelchair. People use.

10‧‧‧Seat components

11‧‧‧chair frame

12‧‧‧ seat

13‧‧‧back

14‧‧‧ front wheel

15‧‧‧ rear wheel

16‧‧‧ support

20‧‧‧Airbag components

21‧‧‧ inflatable pump

22‧‧‧ Femoral adjustment balloon

23‧‧‧Lumbar Spine Adjustment Airbag

24‧‧‧ Catheter

30‧‧‧Control unit

FIG. 1 is a schematic side view of a preferred embodiment of a dynamic adjustment device for a backward tilt wheelchair. Figure 2: A schematic side view of the operating state of one of the dynamic adjustment devices for a backward tilt wheelchair. Figure 3: A schematic side view of the operation of the femoral adjustment airbag in the operating state of one of the dynamic adjustment devices for a backward tilt wheelchair. Figure 4: A schematic side view of the operation of the lumbar spine adjustment airbag in the operating state of one of the dynamic adjustment devices for a backward tilt wheelchair. Figure 5: A schematic side view of the femoral and lumbar spine adjustment airbags in the operating state of one of the backward-adjusting dynamic adjustment devices of this wheelchair.

Claims (3)

A reclining wheelchair dynamic adjustment device includes: a seat assembly comprising a chair frame, a seat, a seat back, two front wheels, two rear wheels, and a support frame, and the seat is provided on the seat; On the chair frame, the seat back is provided on the seat, and the angle of the bad angle between the seat back and the seat is greater than 140 degrees and less than 155 degrees. The two front wheels are arranged on both sides of the front end of the seat frame. The two rear wheels are provided on both sides of the rear end of the chair frame, the support frame is provided on the rear end of the chair frame; an airbag module is provided on the seat module, and the airbag module includes an inflatable pump and a femur An adjustment airbag and a lumbar spine adjustment airbag are provided on the chair frame, the femoral adjustment airbag is provided on the seat back, the lumbar adjustment airbag is provided on the seat, the femoral adjustment airbag and the lumbar adjustment airbag are respectively A catheter is connected to the inflatable pump. The rear tilt wheelchair dynamic adjustment device according to claim 1, wherein the inflatable pump system of the airbag module is electrically connected to a control unit, and the control unit is provided on the chair frame and controls the inflatable pump with the control unit. The lumbar spine adjustment balloon and the femoral adjustment balloon are inflated. As described in claim 1 or 2, the reclining wheelchair dynamic adjustment device, wherein the bad angle between the seat back and the seat of the seat assembly is 150 degrees.