JP6550023B2 - Attitude holding device - Google Patents

Description

  The present invention relates to a device for holding a trunk, and more particularly to a device for holding a posture in a sitting position.

  When the function of the spinal cord is damaged due to an accident or the like, motor dysfunction due to paralysis of the body occurs. The number of such people with trunk dysfunction exceeds 150,000 in Japan. Trunk dysfunction is more severe as the area near the head is damaged. In particular, when the cervical nerve in the cervical spinal cord is damaged, it is usually impossible to move from the chest to the lower, and a wheelchair is required. With regard to the upper limbs, although the moving site differs depending on the injured site of the cervical nerve, the muscle strength generally decreases. Under these conditions, you can not take a forward-looking posture and can not get up when you fall down.

  The inability to take a forward-looking posture, and the ability to get up after falling down, leads to a decline in QOL and ADL in daily life. If you fall down from a wheelchair and you can not get up, you have to hesitate to go along a road with irregularities or steps that may cause a fall or fall. In addition, operations such as eating, PC operation, and taking a shelf become extremely difficult due to the inability to take a forward-looking posture from the wheelchair.

  Therefore, various devices have been developed for the purpose of improving the quality of life (QOL) and activity of daily living (ADL) of people with core dysfunction. Two main approaches can be considered to improve QOL and ADL. One is a trunk holding device which fixes a trunk and prevents a fall. The other is a wearable power assist device that applies a force to move the body.

  The trunk holding device is a device for assisting the belt to fix the body or maintaining the posture (Patent Documents 1 and 2), a device for holding the seat in correspondence with the body shape (Patent Document 3), a sternum, There is a device that supports three points at the lumbar region and pubic bone joint portion (Patent Document 4) and the like. These devices have effects such as posture correction and spine curvature prevention as well as fall prevention. In addition, the wearable power assist device includes a device that assists in motion of the spine, flexion and extension of the hip with a plurality of linear motion actuators (Patent Document 5), and the like.

JP, 2016-34296, A JP, 2015-24087, A Japanese Patent Application Laid-Open No. 7-313554 JP, 2013-215246, A International Publication No. 2015/164814

  The trunk support device has problems such as that the posture can not be changed, wrinkles and pain occur, and the user is stressed because the trunk is fixed. In addition, since the wearable power assist device wears the actuator on the body, it has problems such as load due to weight, noise, heat, and displacement of the mounting portion.

  Therefore, the present invention enables the user to maintain posture and support rising as needed to improve QOL and ADL of trunk dysfunction patients, and usually does not touch the body and does not burden the user. An object of the present invention is to provide a posture maintaining device.

  That is, the present invention is intended to achieve the above object, and in the means of claim 1, the posture maintaining device is connected to the support plate, the slide mechanism connected to the support plate, and the slide mechanism. And a joint having the pad at the center, which is connected to the left and right pair of joints, and further includes a frame having a pad in the center, and the slide and the pad by sliding of the slide mechanism having the return mechanism. And the frame is integrally interlocked with a forward tilting operation and a sitting position returning operation of the user in which the pad is in contact with the chest.

  In the second aspect of the present invention, the slide mechanism linearly slides on the outer surface of the slide rail, the inner connection plate connected to the support plate, the slide rail connected to the outer surface of the inner connection plate, and And an outer connection plate connected to the outer surface of the block, the outer connection plate is connected to the joint, the inner connection plate has a hook attached to an end, and the outer connection plate is An eye plate is attached to an end, the hook has a tip protruding from a slit of the outer connection plate, the hook and the eye plate are connected by a spring, and the repulsive force of the return mechanism is that of the spring It is characterized by being exerted by elasticity.

Further, the means of claim 3 is a structure in which the support plate is connected to a leg fitting via an L-shaped fitting, and the leg fitting allows the connecting portion with the L-shaped fitting to be tilted at a right angle, The support plate, the slide mechanism portion, the joint, the pad, and the frame can be inclined as one body in a state where the lock of the leg fitting is released .

  Also, the means of claim 4 is characterized in that the pad is connected to the frame via a round bar and a small slide rail, and is capable of vertical movement and rotation.

  According to the first aspect of the present invention, the posture maintaining device of the present invention can minimize the contact with the user's body in the sitting position, and can reduce the burden on the skin such as pressure and the onset of pressure sore.

  Further, according to the second aspect of the present invention, the posture maintaining device of the present invention assists the user in maintaining the stable forward lean posture and returning from the forward lean posture, contributes to the prevention of falling, and works using both hands. Make it easy to do.

  Further, according to the third aspect of the present invention, the posture maintaining device of the present invention does not disturb the user's seating, and the mounting after the seating is easy.

  Further, according to the configuration of claim 4, in the posture maintaining device of the present invention, the pad follows the forward tilting and sitting return operation of the user, so that even if the slide mechanism portion has a linear movement mechanism, It is possible to allow the difference between the forward and backward trajectories in the chest.

It is a perspective view of the attitude | position holding | maintenance apparatus of this invention. It is a side view of the example of use of the attitude | position holding | maintenance apparatus of this invention. It is a side view showing the inclination state of the attitude | position holding | maintenance apparatus of this invention. It is an enlarged view of the pad of the attitude | position holding | maintenance apparatus of this invention. It is a side view showing the operation state of the joint and frame of the posture maintaining device of the present invention. It is an enlarged view of the slide mechanism part of the attitude | position holding | maintenance apparatus of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of the entire posture holding device 100 of the present invention. The posture holding device 100 is provided with a support plate 110, a slide mechanism portion 120 connected to the support plate 110, and a joint 130 connected to the slide mechanism portion 120 in a left-right pair. Furthermore, the frame 150 is connected to the pair of left and right joints 130 and has a pad 140 at the center.

  FIG. 2 is a side view of a usage example in which the posture maintaining device 100 is applied to the wheelchair W by mounting the flat plate 300 under the seat of the wheelchair W. In the present embodiment, the support plate 110 is connected to the leg fitting 200, and the leg fitting 200 is fixed to the flat plate 300. The present embodiment is a configuration suitable for the user P of the wheelchair W. In addition, the attitude | position holding | maintenance apparatus 100 is not restricted to the use attached to the wheelchair W using the leg fitting 200 and the flat plate 300. FIG. The posture maintaining device 100 may be attached to a normal chair. As an example, the support plate 110 can be attached to the leg of a normal chair in a removable manner.

  The posture holding device 100 has a configuration in which the pad 140 abuts on the chest of the user P, and interlocks by assisting the forward tilting operation and the sitting position returning operation of the user P. Specifically, the joint 130, the pad 140, and the frame 150 together as a slide of the slide mechanism unit 120 having a return mechanism causes the pad 140 to abut on the chest, and the forward tilting operation and the sitting return operation of the user P Work in conjunction with

  As shown in FIG. 2, the longitudinal direction of the support plate 110 is perpendicular to the seat of the wheelchair W. At this time, the slide mechanism portion 120 is inclined upward from the connection portion with the support plate 110 to the connection portion with the joint 130. The angle of inclination is preferably 12 degrees with respect to the horizontal direction, but is not limited. The angle of 12 degrees determines the trajectories of the chest when transitioning from a sitting position to an anteversion position by a person with cervical spinal cord injury and the trajectories of the chest when moving from an anteversion position to a sitting position by experiment. It is based on being a degree.

  By connecting the slide mechanism unit 120 to the support plate 110 at an angle of 12 degrees with respect to the horizontal direction, the load on the posture holding device 100 can be reduced. In order to reduce the load on the posture holding device 100, the support plate 110 usually has its longitudinal direction perpendicular to the seat of the user P regardless of the use of the leg fitting 200 and the flat plate 300. Should be installed in

  In the present embodiment, the support plate 110 is connected to the leg fitting 200 via the L-shaped fitting 210. However, by releasing the lock, the leg fitting 200 has a right-angled portion with the L-shaped fitting 210. It is a structure that makes it possible to Therefore, the support plate 110, the slide mechanism portion 120, the joint 130, the pad 140 and the frame 150 can be tilted as one.

  FIG. 3 is a side view showing the posture holding device 100 in a tilted state. The metal fitting 200 is preferably a metal fitting used for folding the table leg, and in the present embodiment, the table metal fitting “B-1847” of Takigen Manufacturing Co., Ltd. is applied, but is limited thereto. It is not a thing.

In the present embodiment, the user W of the wheelchair W and the posture holding device 100 is transferred from the side to the wheelchair W in a state where the posture holding device 100 is tilted, and then the posture holding device 100 is returned to the original position. , And the initial state of the posture holding device 100 of FIG.
According to this configuration, the posture holding device 100 does not disturb the seating of the user P and is easy to wear after seating.

  The slide mechanism portion 120 is connected to a frame 150 having a pad 140 at the center via a joint 130. The joint 130 is preferably movable in the forward direction of the user P. In the present embodiment, a double cleanser is used, but the present invention is not limited to this. By using the double cleanserc, it is possible to easily adjust the initial state and the movable range. The joint 130 is preferably adjustable in connection position with the frame 150. In the present embodiment, the joint 130 is provided with a screw hole 131 and a tightening tool 132. By adjusting the connection position, it is possible to arrange the pad 140 in accordance with the physical constitution of the user. Specifically, when the height of the user P of the posture holding device 100 is high, the joint 130 and the frame 150 are connected by the tightening tool 132 using the upper screw hole 131. On the contrary, when the height of the user P of the posture holding device 100 is short, the joint 130 and the frame 150 are connected by the tightening tool 132 using the lower screw hole 131. The joint 130 is normally connected to the slide mechanism 120 such that the longitudinal direction is perpendicular to the seat of the user P.

FIG. 4 is an enlarged view of the pad 140 and shows a connection state with the frame 150. The pad 140 abuts on the sternum of the user P when the user P is in the forward leaning position. Since the sternum is a strong and pain-free area, the sternum is suitable for supporting the user P in an anteversion position. The pad 140 is connected to the frame 150 via a round bar 151 and a small slide rail 152, and can move up and down and rotate. Specifically, the pad 140 can rotate about the round bar 151, and can be moved up and down by the small slide rail 152. The small slide rail 152 is provided with a spring not shown. Even when the user leans forward, the pad 140 abuts with vertical movement and rotation following the tilting of the joint 130 and the frame 150, and returns to the initial position by the spring when moving away from the chest. .
According to this configuration, the posture holding device 100 causes the pad 140 to follow the forward tilting and sitting return operations of the user P, so that even if the slide mechanism unit 120 moves linearly, the front of the user P's chest is moved forward. It is possible to allow the difference between the inclination and return trajectories.

At the time of mounting of the posture holding device 100, the support plate 110, the slide mechanism portion 120, and the joint 130 are positioned in a pair on the left and right sides of the user P. In addition, the frame 150 has a structure from the connection portion with the joint 130, via the armpit, curving along the shape of the chest of the human body, and leading to the front of the chest. The frame 150 can use the upper portion of a jewel type trunk brace. Although the pad 140 is a portion that abuts on the chest when the user P leans forward, the pad 140 may not always be in contact. At the time of wearing, the posture holding device 100 may not be in contact with the body of the user P at all, and even if there is a contact portion, the burden on the body of the user P is very slight.
With this configuration, the posture holding device 100 can minimize the contact of the user P with the body in the sitting position, and can reduce the burden on the skin such as pressure and the onset of pressure sore.

  FIG. 5 is a side view showing the operating state of the joint 130 and the frame 150. As shown in FIG. The double cleanzac of the joint 130 can be adjusted in its initial state by the spring inside the double cleanzac. When the user P leans forward, the pad 140 is pushed by the sternum and the frame 150 tries to move forward. The frame 150 tilts within the movable range of the double cleansac of the joint 130, but slides beyond the movable range along the slide mechanism portion 120 in an anteversion direction. The movable range in the forward direction of the double cleanserc is preferably about 20 degrees.

  FIG. 6 is an enlarged view of the slide mechanism unit 120. As shown in FIG. The slide mechanism unit 120 includes an inner connection plate 121 connected to the support plate 110, a slide rail 122 connected to the outer surface of the inner connection plate 121, a block 123 linearly sliding the outer surface of the slide rail 122, and a block 123 And an outer connection plate 124 connected to the outer surface of the connector. The outer connection plate 124 is connected to the joint 130. The inner connection plate 121 has a hook 125 attached to an end, the outer connection plate 124 has an eye plate 126 attached to the end, and the hook 125 has a tip protruding from the slit 127 of the outer connection plate 124. The eye plate 126 is connected by a spring 128.

  Although the slide rail 122, the hook 125, the eye plate 126, and the spring 128 can use a general commercial item, they are not limited, and the following are all examples. In the present embodiment, the slide rail 122 uses "SELBWZ12-200" of MISUMI, Inc. Moreover, the hook 125 uses "FC-50" of Sugatsune Industrial Co., Ltd. Further, the eye plate 126 uses “CH-551” manufactured by HiLogic Co., Ltd. In addition, for the spring 128, "HS200 series" manufactured by Showa Spring Mfg. Co., Ltd. is used.

  Since the frame 150 is connected to the outer connection plate 124 through the joint 130 when the frame 150 moves forward due to the forward inclination of the user P, the outer connection plate 124 linearly aligns the outer surface of the slide rail 122 Move linearly with the block 123 sliding on the At the same time, the eye plate 126 mounted on the outer connection plate 124 also moves forward. At this time, the eye plate 126 pulls the connected spring 128. The position of the hook 125 which is connected to the spring 128 and the other end and the tip end protrudes from the slit 127 of the outer connection plate 124 is attached to the inner connection plate 121 connected to the support plate 110, regardless of the movement of the frame 150. , Does not change. The spring 128 stored by the user's forward leaning posture has elastic energy for returning the posture of the user P to the original sitting position via the pad 140. This elastic energy also has the effect of holding the user P in the forward lean position.

式１中、ｍは使用者Ｐの頭部および体幹部の重量、ｇは重力加速度、θは使用者Ｐの前傾姿勢の角度、ｋはバネ定数、ｘは釣り合った時点のバネの変位であり、角度は度数法による。左辺の第１項は、バネ１２８が姿勢保持装置１００の左右に２個連結されているため、０．５倍とする。ここで、変位ｘは、スリット１２７の長さで釣り合うことを前提とする。一例として、スリット１２７が１２０ｍｍである場合において、使用者Ｐが３５度の前傾姿勢となったときに、バネ１２８が変位ｘの最大値であるスリット１２７の長さまで伸びて、頭部および体幹部の重量が２２．４ｋｇである使用者Ｐの前傾姿勢が釣り合う場合のばね定数ｋは、０．５２５Ｎ／ｍｍである。 The spring 128 is required to have an appropriate strength in order to obtain an appropriate elastic energy. The spring constant necessary for selecting the spring 128 is the following equation 1 from the balance of the load due to the displacement of the spring.

In Equation 1, m is the weight of the head and trunk of the user P, g is the gravitational acceleration, θ is the angle of the forward inclination of the user P, k is the spring constant, and x is the displacement of the spring at the balanced point Yes, the angle is in degrees. The first term of the left side is 0.5 times because two springs 128 are connected to the left and right of the posture holding device 100. Here, the displacement x is assumed to be balanced by the length of the slit 127. As an example, when the slit 127 is 120 mm, the spring 128 extends to the length of the slit 127 which is the maximum value of the displacement x when the user P is in the forward inclined posture of 35 degrees, and the head and body The spring constant k is 0.525 N / mm when the forward tilting posture of the user P who has a trunk weight of 22.4 kg is balanced.

In the present embodiment, the repulsive force of the return mechanism of the slide mechanism portion 120 is exerted by the elasticity of the spring 128, but is limited to the elasticity of the spring 128 if it can exert an appropriate repulsive force. It is not a thing. For example, it may be a return mechanism that exerts an appropriate repulsive force by a hydraulic cylinder that can be automatically controlled. In addition, in order to reduce the impact on the user P, it is also possible to use a spring and a damper in combination.
Further, although the support plate 110, the inner connection plate 121 of the slide mechanism portion, the outer connection plate 124, and the joint 130 have been described as separate parts, they can be configured by integral molding.
According to this configuration, the posture holding device 100 assists the user P in holding the stable forward lean posture and recovering from the forward lean posture, contributing to the prevention of falling, and capable of facilitating work using both hands. I assume.

100 ... posture holding device.
110 ... support plate.
DESCRIPTION OF SYMBOLS 120 ... Sliding mechanism part, 121 ... Inner connection board, 122 ... Slide rail, 123 ... Block, 124 ... Outer connection board, 125 ... Hook, 126 ... Eye plate, 127 ... Slit, 128 ... Spring.
130 ... fittings, 131 ... screw holes, 132 ... tightening tools.
140 ... pad.
150 ... frame, 151 ... round bar, 152 ... small slide rail.
200: Leg fitting.
210 ... L-shaped bracket.
300 ... flat plate.
P: User.
W ... Wheelchair.

Claims (4)

A support plate,
A slide mechanism connected to the support plate;
A left and right pair of joints connected to the slide mechanism portion;
And a frame connected to the pair of left and right joints and having a pad in the center,
By the sliding of the slide mechanism having a return mechanism, the joint, the pad, and the frame are integrally interlocked with the forward tilting operation and the seat return operation of the user in which the pad is in contact with the chest. Posture holding device. The slide mechanism unit is
An inner connection plate connected to the support plate;
A slide rail connected to the outer surface of the inner connection plate;
A block linearly sliding on the outer surface of the slide rail;
An outer connection plate connected to the outer surface of the block;
The outer connection plate is connected to the joint,
The inner connection plate has a hook attached to an end thereof
An eye plate is attached to an end of the outer connection plate,
The hook has a tip protruding from a slit of the outer connection plate,
The hook and the eye plate are connected by a spring,
The posture maintaining device according to claim 1, wherein the repulsive force of the return mechanism is exerted by the elasticity of the spring. The support plate is connected to a leg fitting via an L-shaped fitting, and the leg fitting has a structure in which a connection portion with the L-shaped fitting can be tilted at a right angle, and the lock of the leg fitting is released . The posture holding device according to claim 1, wherein the support plate, the slide mechanism, the joint, the pad, and the frame are integrally tiltable in the state. The posture maintaining device according to any one of claims 1 to 3, wherein the pad is connected to the frame via a round bar and a small slide rail, and capable of moving up and down and rotating.

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