JP4356810B2 - Seat lift car - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a seat raising / lowering walking vehicle that performs a walking motion and a standing motion for a person having a disorder in lower limb function (hereinafter referred to as a patient).
[0002]
[Prior art]
[Patent Literature]
Japanese Patent Laid-Open No. 2001-321404 A conventional patent document discloses a walker / wheelchair that includes a seat 4 that can move up and down and a wheelchair or a walker.
[0003]
[Problems to be solved by the invention]
The prior art has the advantage that it is convenient if it raises the seat part and becomes a wheelchair if the seat part is lowered, but the moving member consisting of a rod and a cylindrical body fitted around the rod is large and heavy. It is difficult to handle the bulk, and the range of movement of the seat portion is small, making it difficult to bring the seat portion to a low position and difficult to use.
[0004]
Furthermore, in order to unlock the gas spring, the release lever connected with the gas spring and the wire is pulled, so that the operation is difficult, and the presence of the wire deteriorates the appearance and gets caught on the wire, etc. There are difficulties.
[0005]
An object of the present invention is to solve the above-mentioned problems, and to provide a seat raising and lowering walking vehicle that is easy to handle, easy to use, and can perform walking and standing up conveniently.
[0006]
[Problems to be solved by the invention]
In other words, the present invention relates to a seat part raising / lowering walking vehicle (1) having a seat part (4) that can be raised and lowered and a seat part raising and lowering assisting member (6) that assists the raising and lowering operation of the seat part (4). Is attached to the upper part of the seat frame (31), and the seat raising / lowering assisting member (6) includes an urging member (43) having an urging force for urging the seat (4) in the upward direction . The lock mechanism (32) that locks the movement of the biasing member (43) and the lock release mechanism (33) that unlocks the biasing member (43). The lock release mechanism (33) is a link fitting (39). ) On the seat frame (31) with a link shaft (29), and a lock mechanism (32) by rotating the link fitting (39) about the link shaft (29). It consists unlocking tool to unlock (37), the unlocking device (37), caregiver the seat (4) Extending toward the rear of the sit seat with one hand from behind the direction of the patient (4) and Oite seat under the seat so that the unlocking member (37) can be gripped and unlocked at the same time (4) (4) It is the seat part raising / lowering walking vehicle characterized by existing.
[0007]
[Action]
A walking motion and a standing motion are performed using the seat raising / lowering walking vehicle 1 of the present invention. The seat 4 on which the patient sits moves up and down. The seat part raising / lowering assisting member 6 assists the raising / lowering operation of the seat part 4. The urging member 43 has an urging force in the extending direction and assists the raising of the seat portion 4. The lock mechanism 32 locks the movement of the urging member 43 so that it cannot expand and contract. The lock release tool 37 releases the lock of the urging member 43. The relative position of the lock release tool 37 with respect to the seat 4 is constant regardless of the height of the seat 4.
[0008]
The lock release mechanism 33 constituted by the lock release tool 37 and the link mechanism 38 releases the lock action of the lock mechanism 32. That is, the operation of the unlocking tool 37 by the operator is transmitted to the locking mechanism 32 via the link mechanism 38, and the locking action of the locking mechanism 32 is released.
[0017]
【Example】
1 to 4 show an embodiment of the present invention.
The seat raising / lowering walking vehicle 1 according to the embodiment is such that a patient performs a walking motion and a standing motion. The seat raising / lowering walking vehicle 1 stands on the frame 2 that travels on the floor surface 8, the parallel link 3 that is attached to the frame 2, the seat 4 that is attached to the front portion of the parallel link 3, and the frame 2. It comprises a support 5 provided, a seat raising / lowering auxiliary member 6 for urging the seat 4 upward, and an elbow support 7 attached to the support 5 in a forwardly inclined manner.
[0018]
The frame 2 that travels on the floor surface 8 includes a leg frame 10 having wheels 9 provided at a lower portion thereof, and an attachment frame 11 that is erected at the tip of the leg frame 10.
The leg frame 10 includes a left side 10a, a right side 10b, and a front side 10c.
The attachment frame 11 is erected on the front side 10c.
[0019]
The left and right supporters 5a and 5b are erected on the left side 10a and the right side 10b, respectively. The mounting frame 11 and the left and right supporters 5a and 5b are connected by a reinforcing frame 12.
[0020]
The support 5 includes an outer cylinder (= base frame pipe 17) having an inner cylinder (= elbow support pipe 16) inserted in a telescope shape, and a support lock mechanism 15 provided on the base frame pipe 17. The elbow support 7 can be changed / adjusted to an appropriate height by the supporter extending and retracting the support 5.
Between the base frame pipe 17 and the elbow support pipe 16, a guide bush 45 for smooth movement of the elbow support pipe 16 is provided on the base frame pipe 17.
[0021]
The support lock mechanism 15 fixes the movement of the elbow support 7 by sandwiching the elbow support support pipe 16 between the base frame pipes 17. On the upper part of the base frame pipe 17, a throttle part 13 having a slightly narrowed diameter is provided.
The support lock mechanism 15 includes left and right nuts 18a and 18b and left and right bolts 19a and 19b screwed to the left and right nuts 18a and 18b, respectively. A combination of the left bolt 19a and the left nut 18a and a combination of the right bolt 19b and the right nut 18b are respectively disposed at the rear portions of the left and right base frame pipes 17a and 17b.
In other examples of positions where bolts and nuts are provided, although not shown, the combination of the left bolt 19a and the left nut 18a and the combination of the right bolt 19b and the right nut 18b are connected to the left and right base frame pipes 17a and 17b. Arranged at the front part.
[0022]
A cutout 20 is formed at the upper end of the base frame pipe 17 in the longitudinal direction of the pipe 17. In the base frame pipe 17, a pipe one piece 21 is attached to one side of the notch 20 and a pipe other piece 22 is attached to the other side, and the pipe one piece 21 and the pipe other piece 22 face each other. ing.
A nut 18 is attached to the pipe one piece 21. The bolt 19 has a male threaded portion 19 c that penetrates the other pipe piece 22, and the tip of the male threaded portion 19 c is screwed to the nut 18. A handle 23 for turning the bolt 19 is provided at the base of the bolt 19.
The guide bush 45 is also formed with a notch at the same position as the notch 20.
[0023]
Unlike the above-described configuration, the support lock mechanism 15 may be provided on the left and right sides of the base frame pipe 17. In this case, either the left bolt 19a or the left nut 18a or the right bolt 19b or the right nut 19b is a reverse screw, and the left bolt 19a or the left nut 19a is provided on the left side of the base frame pipe 17, A right bolt 19 b and a right nut 19 b are provided on the right side of the base frame pipe 17.
[0024]
Instead of the support lock mechanism 15, a lever-type support lock mechanism 24 shown in FIG. The lever-type support lock mechanism 24 is provided on each of the left and right base frame pipes 17.
[0025]
The lever-type support lock mechanism 24 is provided on the base frame pipe 17. The lever-type support lock mechanism 24 includes a support lock shaft 25 whose base end is hooked on the other pipe piece 22, and a lock that is pivotally supported by a lock pin 28 at the front end of the support lock shaft 25 penetrating the pipe one piece 21. And lever 26. The lock lever 26 has a large diameter portion 26 a around the support lock shaft 25.
[0026]
The parallel link 3 pivotally supports the parallel upper and lower arms 30a and 30b, the mounting frame 11 that pivotally supports the base portions of the upper and lower arms 30a and 30b, and the tip portions of the upper and lower arms 30a and 30b. And a seat frame 31.
[0027]
The seat part 4 is attached to the upper part of the seat part frame 31. While the seat 4 rises from the lower limit position to the upper limit position, the angle of the seat raising / lowering assisting member 6 with respect to the arm 30 has a locus as large as possible. Similarly, while the seat portion 4 is lowered from the upper limit position to the lower limit position, the angle of the seat lift assisting member 6 with respect to the arm 30 has a locus as large as possible. The lower the seat 4 is, the more efficiently the seat raising / lowering assisting member 6 can assist in raising and lowering.
[0028]
When the arm 30 of the parallel link 3 is rotated around its base, the seat 4 moves in the vertical direction together with the seat frame 31 at the tip of the arm 30.
The planar view shape of the seat part 4 is a front view shape of a substantially round flask.
[0029]
The seat raising / lowering assisting member 6 includes an urging member 43 having an urging force, a lock mechanism 32 that locks the movement of the urging member 43, and an unlock mechanism 33 that unlocks the urging member 43.
[0030]
The upper end of the urging member 43 is fixed to a stopper 14 that is pivotally supported by the seat frame 31 with a stop shaft 44. The lower end of the urging member 43 is pivotally supported by a U-shaped frame 34 attached to the inside of the attachment frame 11 with a lower shaft 27. The biasing member 43 is provided so as to span between the seat frame 31 and the U-shaped frame 34.
[0031]
A specific example of the seat raising / lowering assisting member 6 is a gas spring, and the lock mechanism 32 is a valve (not shown) provided in a piston (not shown), and the inside of a rod 35 that operates the valve and is connected to the piston. It consists of a push rod 36 inserted through the. The forward / backward movement of the rod 35 is locked by closing the valve.
[0032]
The lock release mechanism 33 includes a lock release tool 37 and a link mechanism 38. The link mechanism 38 links the lock release tool 37 and the lock mechanism 32.
[0033]
The link mechanism 38 is formed by pivotally supporting a substantially U-shaped link metal fitting 39 on a seat frame 31 with a link shaft 29. The link fitting 39 is rotated about the link shaft 29 by the lock release tool 37, and the tip of the link fitting 39 abuts against the push rod 35 and pushes the push rod 35 into the urging member 43. It is.
The tip end of the link fitting 39 is formed in an arc shape so that the distance between the link fitting 39 and the push rod 35 is constant even if the height of the seat 4 changes.
[0034]
An unlocking tool 37 for releasing the lock is provided immediately below the seating part 4 so that the assistant can grasp the seating part 4 and the unlocking tool 37 simultaneously with one hand.
[0035]
The elbow support 7 is placed on the top of the support 5 erected on the frame 2 in a forwardly inclined shape (= forwardly inclined) slightly descending forward and slightly downwardly inclined (= inwardly inclined) inward. Worn.
Grip portions 40 that are gripped by the patient are provided obliquely on the front left and right of the elbow support 7.
[0036]
A back support 41 is provided at the back of the elbow support 7 so as to be in contact with the patient's back and to support the back appropriately at the patient's back position. The attachment base of the back support 41 is attached to the elbow support 7 so as to be able to rotate, slide and fix, and the front and rear position can be adjusted.
The back support 41 is formed by attaching a buffer member to a pipe member.
Further, a breast pad 42 for supporting the patient's chest is provided at the front of the elbow rest 7.
[0037]
When the embodiment is used for a standing motion, the wheel 9 is locked and the patient sits on the seat 4 and puts his elbow on the elbow rest 7.
The patient stands while grasping the grip 40 and moving the upper body forward.
[0038]
The unlocking tool 37 is grasped together with the rear seat part 4 slightly lifted to adjust the height of the seat part 4.
[0039]
When the unlocking device 37 is slightly lifted and the biasing member 43 is unlocked and lifted upward to adjust the height of the seat portion 4, the relative position of the unlocking device 37 relative to the seat portion 4 is 4 Constant regardless of height.
[0040]
The link mechanism 38 transmits the operation of the lock release tool 37 by the operator to the lock mechanism 32 through the operation of the link mechanism 38, and releases the lock action of the lock mechanism 32.
[0041]
That is, when the unlocking tool 37 is moved upward, the substantially square-shaped link metal fitting 39 in the link mechanism 38 rotates, and the tip end portion of the link metal fitting 39 presses the push rod 35. The push rod 36 is retracted by the pressing of the link fitting 39, the valve is opened, and the rod 35 can freely move forward and backward.
[0042]
After slightly lifting the lock release tool 37, the seat part raising / lowering auxiliary member 6 (= gas spring 15) and the parallel link 3 are operated, and the seat part 4 is raised. After the seat 4 is raised to an appropriate position, the lock releaser 37 is released, and the rod 35 of the biasing member 43 is locked and fixed so as not to advance and retreat. The upper height of the seat 4 is determined in accordance with the ability or height of the patient.
[0043]
The height adjustment of the elbow rest 7 is performed separately from the height adjustment of the seat portion 4.
The lock action of the support lock mechanism 15 is released, and the elbow support pipe 16 is raised and lowered freely. With the elbow receiver 7 in a suitable position, the elbow receiver support pipe 16 is sandwiched between the base frame pipes 17, the movement of the elbow receiver 7 is fixed, and the height of the elbow receiver 7 is adjusted.
[0044]
The left and right bolts 19a, 19b of the support lock mechanism 15 are turned to loosen the pinching action of the base frame pipe 17, and the fixed elbow support pipe 16 and the elbow support 7 can be freely moved up and down to release the lock action.
[0045]
That is, the left and right bolts 19a and 19b tightened to the left and right nuts 18a and 18b are loosened, and the left and right nuts 18a and 18b are released from the left and right bolts 19a and 19b.
The inner diameter of the base frame pipe 17 expands and returns to its original shape, and the base frame pipe 17 allows the elbow support pipe 16 to move up and down, and allows the elbow support pipe 16 and the elbow support 7 to move up and down.
[0046]
After raising and lowering the elbow support 7 to an appropriate position, the left and right bolts 19a and 19b of the support lock mechanism 15 are turned and the elbow support support pipe 16 is sandwiched between the base frame pipes 17 so that the elbow support 7 and the elbow support support pipe 16 Lock up / down movement and adjust the height of the elbow rest 7.
[0047]
That is, when the left and right bolts 19a and 19b are tightened to the left and right nuts 18a and 18b, the left and right bolts 19a and 19b pull the left and right nuts 18a and 18b, and the base frame pipe 17 is deformed to The inner diameter is reduced, the base frame pipe 17 sandwiches the elbow support pipe 16, and the elevation of the elbow support pipe 16 and the elbow support 7 is fixed.
[0048]
In the case where the left and right bolts 19a and 19b and the left and right nuts 18a and 18b are provided at the rear portions of the left and right base frame pipes 17a and 17b, the patient or the operator can use the left and right bolts 19a and 19b. Are rotated in the same direction, and the left and right bolts 19a and 19b are tightened or relaxed, and the elbow support pipe 16 is fixed to or released from the base frame pipe 17.
In the case where the bolts and nuts are provided at the front portions of the left and right base frame pipes 17a and 17b, the operator places the left and right bolts 19a and 19b in the same direction as in the case where the bolts and nuts are provided at the rear portions. The elbow support pipe 16 is fixed to the base frame pipe 17 or released.
[0049]
When either the left bolt 19a or the right bolt 19b is a reverse screw, the left bolt 19a is provided on the left side of the left base frame pipe 17a, and the right bolt 19b is provided on the right side of the right base frame pipe 17b, The right bolts 19a and 19b are rotated in the same direction to tighten or relax, and the elbow support pipe 16 is fixed or released.
[0050]
A lever-type support lock mechanism 24 in place of the support lock mechanism 15 acts on the base frame pipe 17, clamps the elbow support pipe 16 with the base frame pipe 17, and fixes or releases the elbow support 7. .
[0051]
That is, when the lock lever 26 provided on the base frame pipe 17 is rotated in one direction, the pipe one piece 21 is pushed by the large-diameter portion 26a, the base frame pipe 17 is deformed and its inner diameter is reduced, and the base frame The pipe 17 sandwiches the elbow support pipe 16 and fixes the elevation movement of the elbow support 7.
[0052]
When the lock lever 26 is returned and rotated, the base frame pipe 17 is deformed, its inner diameter increases and returns to the original diameter, and the base frame pipe 17 releases the fixation of the elbow support pipe 16.
[0053]
When the embodiment is used for walking exercise, the patient sits on the seat 4 and puts his elbow on the elbow support 7 tilted forward and inward.
As described above, the assistant adjusts the seat 4 and the elbow rest 7 by manually raising and lowering the seat 4 and the elbow support 7 to the appropriate height while operating the lock release tool 37.
[0054]
When the seat 4 reaches an appropriate position, the lock mechanism 32 locks the rod 35. In this way, the height of the seat portion 4 is adjusted, and the height of the elbow rest 7 is also adjusted, so that the patient is placed in a standing posture suitable for walking, and walking motion is performed. As the patient walks, the wheel 9 rotates and the embodiment assists in walking.
[0055]
【The invention's effect】
In the present invention , the seat portion 4 is attached to the upper portion of the seat portion frame 31, and the seat portion raising / lowering assisting member 6 has a biasing force that biases the seat portion 4 in the upward direction, and a biasing force. The lock mechanism 32 that locks the movement of the member 43 and the lock release mechanism 33 that unlocks the biasing member 43, and the lock release mechanism 33 pivotally supports the link fitting 39 on the seat frame 31 with the link shaft 29. The link mechanism 38 and the lock release tool 37 for releasing the lock of the lock mechanism 32 by rotating the link fitting 39 around the link shaft 29, and the lock release tool 37 is placed on the seat 4. Since the seat 4 and the unlocking tool 37 can be simultaneously grasped and unlocked with one hand from behind the seated patient, the unlocking tool is provided so as to extend rearward of the seat 4 under the seat 4. 37 relative to the seat 4 is 4 without becomes possible constant to become as configured relationship to the height, easily performs operations of the unlocking member 37, the seat 4 steplessly, be fixed at an arbitrary height may appearance because the wire is not, Further, there is no special vibration or abnormal noise caused by the mechanism, which is convenient.
[0056]
Further , since the lock release mechanism 33 is constituted by the lock release tool 37 and the link mechanism 38 and the lock release tool 37 and the lock mechanism 32 are linked by the link mechanism 38, the link mechanism 38 is simplified. The number of manufacturing steps can be reduced, the manufacturing cost can be reduced, and the operating force can also be reduced by the link action. Furthermore, the link mechanism 38 is compactly configured below the seat portion 4 to improve the appearance, and also use wires. It is convenient because it doesn't happen to injure your hand with a broken wire.
[Brief description of the drawings]
FIG. 1 is a right side view of an embodiment of the present invention.
FIG. 2 is a front view of an embodiment of the present invention.
FIG. 3 is a plan view of an embodiment of the present invention.
FIG. 4 is a view showing a lock lever according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat part raising / lowering walk vehicle 2 Frame 4 Seat part 6 Seat part raising / lowering auxiliary member 7 Elbow receptacle 15 Support lock mechanism 16 Elbow receptacle support pipe 17 Base frame pipe 17a Left base frame pipe 17b Right base frame pipe 18a Left nut 18b Right nut 19a Left bolt 19b Right bolt 25 Support lock shaft 26 Lock lever 26a Large diameter portion 32 Lock mechanism 33 Lock release mechanism 37 Lock release tool 38 Link mechanism 43 Energizing member

Claims (1)

In the seat raising / lowering walking vehicle (1) having a seat part (4) capable of raising and lowering and a seat part raising / lowering auxiliary member (6) for assisting the raising and lowering operation of the seat part (4),
The seat (4) is attached to the upper part of the seat frame (31),
The seat raising / lowering auxiliary member (6) includes an urging member (43) having an urging force for urging the seat (4) in the upward direction, and a lock mechanism (32) for locking the movement of the urging member (43). And an unlocking mechanism (33) for unlocking the biasing member (43),
The lock release mechanism (33) includes a link mechanism (38) in which the link fitting (39) is pivotally supported on the seat frame (31) by the link shaft (29), and the link fitting (39) as the link shaft (29). And a lock release tool (37) for releasing the lock of the lock mechanism (32) by rotating around
The unlocking device (37) is configured so that an assistant can simultaneously grasp and unlock the seat (4) and the unlocking device (37) with one hand from behind the patient sitting on the seat (4). Oite seat under 4) (4) the seat lift walker, characterized in that provided extending toward the rear of the.

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