TWI599350B - Rear wheelchair dynamic adjustment device - Google Patents

Description

Backward wheelchair dynamic adjustment device

This creation is a backward tilting wheel dynamic adjustment device, especially a backward tilting wheelchair dynamic adjustment device that can prevent a wheelchair user from having a lower back pain due to sedentary sitting.

Most of the users of wheelchairs nowadays are patients with lower limb diseases or elderly people with weak muscles or muscles in the lower limbs. People who use wheelchairs have many problems in life. Apart from the inconvenience of movement, the most troublesome is the sedentary of wheelchairs. Cumulative complications, and persistent stress accumulated in the lumbar spine, often cause symptoms of back pain in wheelchair users. Lower back pain is a common back musculoskeletal injury and belongs to the soft tissue length of the lumbar intervertebral disc, muscle, tendon and fascia. Untimely stress, resulting in latent effects, resulting in discomfort and pain.

The existing method for improving the lower back pain of a wheelchair user is to take a dynamic wheelchair with a four-bar linkage system, which uses a four-bar linkage mechanism to control the back and forth movement of the seat back to achieve the effect of adjusting the dynamic sitting posture. The utility model comprises a chair frame, a seat frame, a four-bar linkage mechanism, a chair back, two front wheels and two rear wheels. The seat is arranged on the chair frame, and the four-bar linkage mechanism is arranged on the seat, the four-link The rod mechanism comprises a bottom rod, an adjusting rod, an actuating member, a horizontal rod and a linkage rod, the bottom rod is connected to the seat, one end of the adjusting rod is rotatably connected to the center of the bottom rod, and the actuating member is connected The bottom rod and the adjusting rod, the actuating member adjusts an acute angle between the adjusting rod and the bottom rod, the horizontal rod is connected to the adjusting rod, and the connecting rod connects the horizontal rod and the bottom rod, the seat back The second front wheel is disposed at the center of the horizontal rod, the two front wheels are disposed on the seat frame, and the two rear wheels are disposed on the seat frame. When the user needs to change the sitting posture, adjusting the actuating member to sandwich the adjusting rod and the bottom rod The acute angle changes to 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-bar linkage system is used to adjust the dynamic sitting posture to avoid lower back pain. The dynamic seat can adjust the left and right pelvis rotations to relieve the persistent stress, and contribute to the perfusion and prevention of intervertebral disc nutrition. The risk of disc degeneration, however, due to the complex mechanism required for dynamic seats and the need for complex control systems, the dynamic wheelchair manufacturing is expensive, not every wheelchair user can use, there are still many users who are sitting in wheelchairs. Suffering from complications.

The main purpose of this creation is to provide a backward tilting chair dynamic adjustment device to avoid the problem of lower back pain complications due to sedentary and expensive manufacturing of dynamic seats.

In order to achieve the foregoing, the present invention relates to a wheelchair dynamic adjustment device comprising: a seat assembly comprising a seat frame, a seat, a seat back, two front wheels, two rear wheels and a support frame, The chair seat is disposed on the seat frame, the chair back is disposed on the seat, and the angle of the angle between the seat back and the seat is greater than 140 degrees and less than 155 degrees, and the two front wheels are disposed on the seat frame The two rear wheels are disposed on two sides of the rear end of the seat frame, the support frame is disposed at the rear end of the seat frame; an air bag assembly is disposed on the seat assembly, and the air bag assembly includes an air bag a pump, a bone adjustment airbag and a lumbar adjustment airbag, the inflatable pump is disposed on the chair frame, the femur adjustment airbag is disposed on the seat back, the lumbar adjustment airbag is disposed on the seat, the femur adjustment airbag and the lumbar vertebra The adjustment airbags are respectively connected to the inflatable pump by a conduit.

The creation of the reclining wheelchair dynamic adjustment device is performed by the femoral adjustment airbag and the inflation and deflation of the lumbar adjustment airbag, and the inflation expansion of the airbag is adjusted through the femur so that the user does not slide out of the reclining wheelchair dynamic adjustment device, and The weight of the lower limb of the user can be dispersed, or the inflation bulging of the airbag can be adjusted through the lumbar vertebra to push the lumbar vertebrae of the user upward to relieve the sustained pressure of the lumbar region, and the angle of the lumbar vertebrae and the pelvis is obviously rotated to avoid the lower back pain of the user. To solve the problem that the user is sedentary and cause complications of lower back pain, and because the structure of the backward tilting wheel dynamic adjusting device is simple, no complicated component combination is required, and a complicated control system is not needed, so the rear tilting wheelchair dynamically adjusts The device is relatively inexpensive to manufacture and can be used by users of each wheelchair.

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

The seat assembly 10 includes a seat frame 11 , a seat 12 , a seat back 13 , two front wheels 14 , two rear wheels 15 , and a support frame 16 . The seat 12 is disposed on the seat frame 11 . 13 is disposed on the seat 12, and the angle of the inferior angle between the seat back 13 and the seat 12 is greater than 140 degrees and less than 155 degrees, wherein the optimal inferior angle is 150 degrees, and the two front wheels 14 The two rear wheels 15 are disposed on two sides of the front end of the seat frame 11, and the support frame 16 is disposed at the rear end of the seat frame 11.

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

The creation of the reclining wheelchair dynamic adjustment device through the pressure sensing system and the experiment of the 3D ultrasonic spatial positioning device can compare the effects of the femoral adjustment balloon 22 and the lumbar adjustment balloon 23 with each other or bring the user to use the latter. When the wheelchair is dynamically adjusted, the pressure sensing system uses the pressure pad to sense the pressure on the buttocks and back of the user of the backward tilting wheel dynamic adjustment device, and the contact area, the average pressure and the peak pressure can be obtained, and the 3D ultrasonic space is obtained. The positioning device uses an ultrasonic three-dimensional spatial positioning system to locate the angle of the user's spine bending using the backward tilting wheel dynamic adjustment device, thereby judging the feeling and influence of the femoral adjustment airbag 22 and the lumbar adjustment airbag 23 to the user.

As shown in FIG. 2, it is an initial state of the dynamic adjustment device for the reclining wheelchair, and the user uses the initial state of the reclining wheelchair dynamic adjustment device, and the artificial reclining wheelchair dynamic adjustment device is caused by the chair back 13 The angle of the inferior angle of the seat 12 is greater than 140 degrees and less than 155 degrees. The user can use the backward tilting wheel dynamic adjustment device to disperse the user's weight and relieve the stress on the user's sciatic concentration. The support frame 16 prevents the backward tilting wheel 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, it is an initial state of the creative reclining wheelchair dynamic adjustment device, and the user uses the initial state of the artificial reclining wheelchair dynamic adjustment device and controls the airbag assembly 20 using the control unit 30. An inflated pump 21, the inflated pump 21 fills the femoral adjustment balloon 22 with air, and the femoral adjustment balloon 22 expands due to full air, and the user's thigh rises as the femoral adjustment balloon 22 bulges, dispersing the user The weight of the lower limb can also prevent the wheelchair user from sliding forward when the 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 wheel dynamic adjustment device.

As shown in FIG. 2 and FIG. 4, it is an initial state of the creative reclining wheelchair dynamic adjustment device, and the user uses the initial state of the artificial reclining wheelchair dynamic adjustment device and controls the airbag assembly 20 by using the control unit 30. The inflatable pump 21 is filled with the lumbar adjustment airbag 23, and the lumbar adjustment airbag 23 is inflated by the fullness of the air, and the user's back is inflated toward the front of the user along with the lumbar adjustment airbag 23 By pushing 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 to the back of the user and relieves the sustained stress on the back.

As shown in FIG. 2 and FIG. 5, the initial state of the artificial reclining wheelchair dynamic adjustment device and the operation state of the femoral adjustment airbag 22 and the lumbar adjustment airbag 23 simultaneously inflated and inflated are used by the user. The dynamic adjustment device controls the inflation pump 21 of the air bag assembly 20 to be inflated through the control unit 30. The femoral adjustment air bag 22 and the lumbar adjustment air bag 23 are simultaneously filled with air, and the femur adjustment air bag 22 is inflated to raise the user's thigh. Adjusting the inflation of the air bag 23 causes the lumbar vertebra to push forward toward the user, and simultaneously achieves the effect of the femoral adjustment air bag 22 and the lumbar adjustment air bag 23 to soothe the user's ischia and lumbar vertebrae.

In addition, through the experiment of the 3D ultrasonic spatial positioning device, it can be inferred that the lumbar adjustment airbag 23 and the femoral adjustment balloon 22 can give a good angular change of the lumbar vertebrae and the pelvis at the same time of inflation, and the initial adjustment of the backward tilting chair dynamic adjustment device The state has made the user's lumbar vertebrae and pelvis sandwich the angle of the inferior angle close to the horizontal level. Therefore, when the lumbar adjustment airbag 23 and the femoral adjustment airbag 22 are inflated, the range of the bulge affects not only the lordosis angle of the lumbar vertebra but also the pelvis. The frontal rotation can make the mean and standard deviation of the angle change of the lumbar vertebra more significant, which helps to distribute the persistent stress of the lumbar vertebrae, and can relieve the chance of lower back pain.

According to the above, the artificial reclining wheelchair dynamic adjusting device can deflate the airbag 22 and the lumbar adjustment airbag 23 by the femoral adjustment airbag 22, and the inflation of the airbag 22 is bulged by the femur to raise the user's thigh, and the lumbar adjustment airbag 23 is inflated. Pushing the lumbar vertebrae forward, soothing the pressure of the user's ischia and lumbar vertebrae, and transferring the persistent stress applied to the lumbar vertebrae can avoid the problem of lower back pain in the user, and avoid cumulative complications caused by sedentary lower limbs. In addition, because the structure of the backward tilting chair dynamic adjustment device is simple, no complicated components are needed and no complicated control system is needed, the rear tilting wheelchair dynamic adjustment device has a low manufacturing cost and can be used by each wheelchair. Use.

10‧‧‧Seat components

11‧‧‧ Chair frame

12‧‧‧ seat

13‧‧‧Back of the chair

14‧‧‧ front wheel

15‧‧‧ Rear wheel

16‧‧‧Support frame

20‧‧‧Airbag components

21‧‧‧Inflatable pump

22‧‧‧Femoral adjustment balloon

23‧‧‧Lumbar adjustment airbag

24‧‧‧ catheter

30‧‧‧Control unit

Figure 1 is a side elevational view of a preferred embodiment of the present invention. Figure 2: A side view of the operational state of one of the creative reclining wheelchair dynamic adjustment devices. Fig. 3 is a side view showing the operation of the femoral adjustment airbag in one of the operating state of the reclining wheelchair dynamic adjustment device. Figure 4: A side view of the lumbar adjustment of the airbag in one of the operational state of the reclining wheelchair dynamic adjustment device. Fig. 5 is a side view showing the simultaneous operation of the femoral and lumbar vertebrae adjusting the airbag in one of the operating state of the reclining wheelchair dynamic adjustment device.

10‧‧‧Seat components

11‧‧‧ Chair frame

12‧‧‧ seat

13‧‧‧Back of the chair

14‧‧‧ front wheel

15‧‧‧ Rear wheel

16‧‧‧Support frame

20‧‧‧Airbag components

21‧‧‧Inflatable pump

22‧‧‧Femoral adjustment balloon

23‧‧‧Lumbar adjustment airbag

24‧‧‧ catheter

30‧‧‧Control unit

Claims (3)

A rear tilting wheelchair dynamic adjusting device comprises: a seat assembly comprising a seat frame, a seat, a seat back, two front wheels, two rear wheels and a support frame, wherein the seat is provided On the chair frame, the chair back is disposed on the seat, and the angle between the seat back and the seat is greater than 140 degrees and less than 155 degrees, and the two front wheels are disposed on both sides of the front end of the seat frame. The two rear wheels are disposed on two sides of the rear end of the chair frame, the support frame is disposed at the rear end of the chair frame; an air bag assembly is disposed on the seat assembly, the air bag assembly includes an inflatable pump and a bone Adjusting an air bag and a lumbar adjustment air bag, the inflatable pump is disposed on the chair frame, the femoral adjustment air bag is disposed on the seat back, the lumbar adjustment air bag is disposed on the seat, the femur adjustment air bag and the lumbar adjustment air bag system respectively A catheter is connected to the inflatable pump. The tilting wheelchair dynamic adjustment device according to claim 1, wherein the inflatable pump of the airbag module is electrically connected to a control unit, the control unit is disposed on the chair frame and the inflatable pump is controlled by the control unit. The lumbar adjustment balloon and the femoral adjustment balloon are inflated. The backward tilting chair dynamic adjustment device according to claim 1 or 2, wherein the seat back of the seat assembly and the seat are at an angle of 150 degrees.