JP2001008737A - Vertically movable table and vertically movable table and chair set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertically movable table of safety which allows an elderly person, a sick person, a wheelchair user, etc., requiring care because of being handicapped in his/her arms to easily operate it by him/herself. SOLUTION: A vertically movable table is provided with a substrate frame 5 having a right and left pair of supports 4 at a rear part, parallel link members 6, 6 having their rear end sides pivotally supported by the supports 4, a top plate 7 freely movable in a vertical direction pivotally supported by the front end sides of the members 6, a lock device 9 for regulating the rotation of the members 6, and a detection line material 12 bend-formed so as to correspond from the front end of the rear surface side of the plate 7 to both side edges and arranged just under the plate 7 in order to unlock the device 9. Thus, the material 12 is pushed up to freely elevate and lower the plate 7. On the other hand, when the state of contacting to the material 12 is unlocked and a non-contacting state is generated, the device 9 is automatically unlocked to fix the top plate 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lifting table and a lifting table / chair set.

[0002]

2. Description of the Related Art There are known various types of elevating tables in which the vertical position of a top plate can be adjusted as required.
For example, a pipe material (inner cylinder) suspended from a top plate is slidably fitted to a leg made of a pipe material (outer cylinder), and a lever of a lock device provided at the fitting portion is manually operated. There has been known a device capable of lifting and lowering and fixing a top plate by doing so.

[0003]

However, in the above-described conventional elevating table, especially when used by an elderly or sick person who needs nursing care who cannot use hands freely, a person in a wheelchair, etc. It was inconvenient because the top plate could not be moved up and down. Also, from a safety standpoint,
In the case of a severely disabled person or the like, it is preferable that the top is moved upward when a part of the knee or chair hits the top.

Therefore, the present invention enables an elderly or sick person who needs nursing care, a person in a wheelchair, and the like (hereinafter, sometimes referred to as a "vulnerable body") to easily operate by himself. An object is to provide a safe lifting table and a lifting table / chair set.

[0005]

In order to achieve the above-mentioned object, a lifting table according to the present invention comprises a base frame having a pair of right and left columns at a rear portion, and a parallel frame pivotally supported at the rear end by the columns. A link member, a top plate pivotally supported on the front end side of the parallel link member and movable in the vertical direction, a lock device for restricting rotation of the parallel link member, and releasing the locked state of the lock device. And a detection line member bent and formed to correspond from the front edge to both side edges on the back side of the top plate and disposed immediately below the top plate, and the detection line When the material is pushed upward, the top plate can freely move up and down. On the other hand, when the state of contact with the detection wire is released and the state becomes non-contact, the locking device is automatically locked. Then, the top plate is fixed.

The lock device has a fan-shaped uneven bar which is movable in a substantially horizontal front-rear direction and has a projection bar for urging the bar in the hook direction. And the detection wire is rotatably supported on both sides, and the both sides and the center of the hanging bar are connected by a pair of left and right push-pull cables. It is also preferred.

The elevating table / chair set of the present invention is an elevating table / chair set comprising a combination of an elevating table having a rotatable top plate and an elevating chair having a rotatable seat. A table has a base frame having a pair of left and right columns at the rear, a parallel link member pivotally supported at the rear end by the column, and a vertically movable movable pivotally supported by the front end of the parallel link member. A top plate, a locking device for restricting rotation of the parallel link member, and a folding device for releasing the locked state of the locking device from the front edge on the back side of the top plate to both side edges. A detection wire that is bent and disposed immediately below the top plate, and the knee of a person sitting on the lift chair or a part of the lift chair is attached to the detection wire. When contacted from below, the detection wire is pushed upward. By doing so, while the top plate can freely move up and down, when the contact state with the detection wire is released and becomes non-contact state, the lock device is automatically locked and the top plate is locked. Is to be fixed.

The lock device has a fan-shaped uneven bar which is movable in a substantially horizontal front-rear direction and has a projection bar for urging the bar in the hook direction. And the detection wire is rotatably supported on both sides, and the both sides and the center of the hanging bar are connected by a pair of left and right push-pull cables. It is also preferred.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments of the present invention.

FIG. 1 is a perspective view showing the essential parts of a lifting table.
2 is a perspective view, and FIG. 3 is a bottom view. In these figures,
Reference numerals 1 and 1 denote a pair of horizontal members mounted in parallel on the floor surface at predetermined intervals, 2 denotes a moving wheel attached to the rear end of the horizontal member 1, and 3 denotes a horizontal member of the horizontal member 1. The non-slip member 4 attached to the front part is a support standing upright at the rear end of the horizontal member 1, and forms the base frame 5.

Reference numeral 6 denotes a parallel link member, which comprises a first link member 61 and a second link member 62 each having one end pivotally supported at an upper portion (or an intermediate height) of the column 4. Reference numeral 7 denotes a top plate, which is provided on support members 8 and 8 which are vertically downwardly provided at lower portions on both sides thereof.
The other ends of the first link member 61 and the second link member 62 are pivotally supported, and the top plate 7 is configured to be vertically movable in parallel. That is, the support members 8, 8 are always moved up and down by the parallel link members 6 while keeping parallel to the columns 4, 4, and the horizontal top plate 7 fixed on the upper portions of the support members 8, 8 is It always moves up and down while keeping its level.

Reference numeral 9 denotes a lock device, which is provided at an upper portion (or at an intermediate height) of the column 4 to restrict the rotation of the parallel link member 6, as shown in FIG. That is, the lock device 9 includes a lock plate 92 having a plurality of concave and convex teeth 91 and provided at the upper part or the intermediate height of the left and right columns 4, 4;
A locking portion 93 for locking and unlocking the lock plate 92;
A hook bar 94 having 93 at both ends and a resilient member 95 for urging the hook bar 94 in the hooking direction (direction of arrow A).

More specifically, left and right ends 94 of the latch bar 94
1 is slidably inserted into a long hole 621 formed in the second link member 62, and holes 942 formed at both ends 941 thereof.
The protrusions 622 projecting from the base of the second link member 62 lock both ends of the resilient member 95. In a free state, the right and left hooks are urged by the resilient member 95. Part 93,
Each is hooked on the uneven teeth 91 of the left and right lock plates 92.

Numeral 12 denotes a detection wire, which is bent in a substantially U-shape in plan view so as to correspond from the front edge on the rear surface side of the top plate 7 to both side edges, and has both side end portions 121, 121. 121 is rotatably supported (pivoted) by the support members 8,8. Both end portions 121, 121 and the central portion of the hook bar 94 are connected by push-pull cables 14, 14, and the front portion (front side portion) of the substantially U-shaped detection wire member 12 is formed. Alternatively, when the side portion (side portion) is pushed upward, the lock of the lock device 9 is released, the top plate 7 can be moved up and down, and the contact with the detection wire 12 is released and the non-contact state is established. Then, the lock device 9 is locked, and the top plate 7 is fixed at that position.

More specifically, as shown in FIG. 5, a side end 121 of the detection wire 12 is fixed to a support bracket 13 pivotally supported on a support member 8 via a support shaft 15 by welding or the like. And
A folded part 131 formed at the lower part of the support bracket 13
The tip of the cable body 141 of the push-pull cable 14 is hooked to the shaft member 16 that is fixed across
The distal end of the sheath member 142 is fixed to a receiving member 17 fixed to the rear side surface of the supporting member 8, and the supporting member 13 and the like are covered by a detachable casing 22.

On the other hand, the sheath member 14 of the push-pull cable 14
As shown in FIG. 1, the base of the second link member
As shown in FIG. 3, the base of the cable body 141 is fixed to a receiving bracket 19 provided at the center of a fixed bar 18 bridged between the 62 and 62. It is inserted into the hole and fixed to a mounting bracket 20 provided at the center of the hook bar 94.

Numeral 21 is a helical spring (spring spring) whose main body is housed in both sides of a back portion 10 stretched between right and left columns 4 and 4, and a vertical guide formed on both sides of the back portion 10. The front end of the hole 101 is projected forward from the hole 101, and the fixed bar 18 is mounted on the front end, and the fixed bar 18 is urged and supported upward. Thus, the top plate 7 is resiliently urged upward via the second link members 62, 62, so that the weight of the top plate 7 is reduced, and the lifting and lowering operation of the top plate 7 in the free state is light and smooth. become.

With this configuration, the hand of the person sitting on the floor or the tatami, the knee of the person sitting on the chair C, or a part of the chair C comes into contact with the detection wire 12 from below. do it,
When the detection wire 12 is pushed upward, the top plate 7 can be moved up and down. On the other hand, when the contact state with the detection wire 12 is released and the non-contact state is reached, the lock device 9 is automatically locked. Then, the top plate 7 is fixed at that position.

More specifically, when the detecting wire 12 is pushed upward, the supporting bracket 13 shown in FIG. 5 rotates clockwise, the cable body 141 is pulled out, and the tensile force is constantly applied. Since the locking bar 94 acts on the center of the locking bar 94, the locking state of the locking bar 94 with respect to the two lock plates 92, 92 is always simultaneously released in the right and left directions with good balance. Therefore, even if any part of the front part (front part) and the side part (side part) of the detection wire rod 12 is pushed up, the top plate 7 always tilts,
It is possible to move up and down in a well-balanced manner without rattling.

On the other hand, when the contact state with the detecting wire 12 is released, the detecting wire 12 descends to its initial position by its own weight, and the tensile force acting on the cable main body 141 disappears. The left and right locking portions 93 of the locking bar 94 are locked to the concave and convex teeth 91 of the locking plates 92 by the resilient force of the resilient members 95, and the locking plate 92 is locked. Fixed in position.

FIGS. 6 and 7 show a case where the lifting table T and the lifting chair C are set. In FIG. 6, the lifting table T and the lifting chair C are in a sufficiently low position. Shows a case where the lifting chair C is at the highest position. Note that the elevation table T can change the height position of the top plate 7 to each position indicated by the two-dot chain line in FIG.

The elevating chair C is constituted, for example, as follows. That is, parallel links 35, 35 are formed by the base 31 parallel to each other, the upper horizontal member 32, the front vertical member 33, and the rear vertical member 34, and the parallel links 35, 35 are formed. Thereby, the skeleton 37 of the back portion 36 is formed so as to be able to tilt forward and backward. Reference numeral 42 denotes a pivotal support member attached to the base 31, and reference numeral 43 denotes an intermediate connecting member.

A seat mounting portion 39 is provided at the rear end of the seat 38.
Are provided so as to extend rearward, and front and rear rolling rollers 40 and 41 pivotally attached to the seat mounting portion 39 are provided with front vertical members.
Each of the rear member 33 and the rear vertical member 34 is provided so as to be able to roll up and down, and when the seat 38 is in the ascending position, the seat 38 is inclined forward and downward. Reference numeral 44 denotes an armrest that moves up and down integrally with the seat 38, and reference numerals 45 and 46 denote front and rear connecting members that integrate the seat 38 and the armrest 44.

Although not shown, a reclining drive mechanism for tilting and driving the skeleton 37 of the back portion 36 back and forth is provided in a space between the front vertical member 33 and the rear vertical member 34, and a seat portion.
An elevating drive mechanism for driving the elevating and lowering 38, and an inclination restricting means for restricting the inclination angle θ of the back portion 36 within a predetermined range are provided.

With the above configuration, the seat 38 can be raised and lowered, and the inclination angle of the back 36 can be adjusted within a predetermined range, so that the seated person can take a comfortable posture. In addition, when the waist position is increased, the seat portion 38 is inclined forward and downward, so that the rising operation becomes easy (a rising assisting action is performed). Each operation of the seat 38 can be performed, for example, by a seated person operating a switch board (not shown) connected to each drive mechanism by a wire.

When such a lifting chair C is combined with a lifting table T, the seated person's knee or the lifting chair C
When a part of the wire comes into contact with the detection wire 12 from below and the detection wire 12 is pushed upward, the top plate 7 can be moved up and down in a well-balanced manner without tilting or rattling. It becomes a state. Therefore, especially in the case of a physically handicapped person, the top board 7 can be moved up and down by following the operation of moving the elevating chair C up and down, which is convenient and safe.

Although not shown, the occupant is seated on the seat 38.
For example, the top plate 7 may be once raised to the uppermost position in FIG. By the way, Figure 1
As shown in FIG. 3 to FIG. 3, the front edge of the top plate 7 is formed in a moderately concave shape at the center, and in response to this, the front side of the detection wire 12 is also formed in a moderately concave shape. The plate 7 is easy to use.

The present invention does not limit the configuration of the elevating chair C to the embodiment. The configuration may be appropriately selected, changed, improved, or the like.
What is necessary is just to be comprised so that a seat part can go up and down, and it does not care about the structure.

[0029]

According to the first and third aspects of the present invention,
By the detection wire 12 being pushed upward,
While the top plate 7 can freely move up and down, when the contact state with the detection wire 12 is released and becomes non-contact state, the locking device 9 is automatically locked and the top plate 7 is locked. Is fixed, even a weak person, such as an elderly or sick person who needs nursing care, or a person in a wheelchair, can easily lift and lower the top plate 7 by himself. In particular, according to the third aspect of the present invention, the lifting table T can be automatically made to follow the lifting chair C in accordance with the lifting operation of the lifting chair C, which is convenient and does not damage the knees and the like.
It is also safe.

According to the second and fourth aspects of the present invention, both ends 121, 121 of the detection wire 12 and the center of the hook bar 94 are connected by a pair of right and left push-pull cables 14, 14. Therefore, even if any part of the detecting wire member 12 is pushed up, the locked state can be simultaneously released in a well-balanced manner on the left and right sides, and the top plate 7 can be smoothly moved without tilting or rattling. It can be moved up and down.
In addition, the top plate 7 is stably held in a stationary state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a lifting table according to the present invention.

FIG. 2 is a perspective view.

FIG. 3 is a bottom view.

FIG. 4 is a side view of the lock device.

FIG. 5 is a perspective view of a connection portion between a detection wire and a push-pull cable.

FIG. 6 is a side view showing an embodiment of a lifting table / chair set.

FIG. 7 is a side view showing another state.

[Explanation of symbols]

 4 Support 5 Base frame 6 Parallel link member 7 Top plate 9 Locking device 12 Detecting wire material 14 Push-pull cable 91 Uneven teeth 92 Lock plate 93 Hanging part 94 Hanging bar 95 Elastic member T Elevating table C Elevating chair

Claims (4)

[Claims] 1. A base frame 5 having a pair of right and left columns 4 and 4 at a rear portion thereof, parallel link members 6 and 6 pivotally supported at the rear end side by the columns 4, and parallel link members 6 and 6. A top plate 7 pivotally supported at the front end side and movable vertically, a lock device 9 for restricting the rotation of the parallel link members 6 and 6, and a lock device 9 for releasing the locked state of the lock device 9 A detection wire member 12 that is bent and formed so as to correspond from the front edge to both side edges of the back surface side of the top plate 7 and is disposed immediately below the top plate 7;
When the detection wire 12 is pushed upward, the top plate 7 can freely move up and down, while the contact state with the detection wire 12 is released to a non-contact state. Then, the lock device 9 is automatically locked to fix the top plate 7. 2. A locking bar 94 having a fan-shaped uneven tooth 91 which is movable in a substantially horizontal front-rear direction, and a locking bar 94 attached in the locking direction. Bouncing members 95
On the other hand, the detection wire member 12 is rotatably supported on both sides, and the both sides and the center of the hook bar 94 are formed by a pair of right and left push-pull cables 14. 2. The lifting table according to claim 1, wherein the lifting table is connected by the first, second and third links. 3. An elevating table / chair set comprising a combination of an elevating table T having an elevating top plate 7 and an elevating chair C having an elevating seat 38, wherein the elevating table T is A base frame 5 having a pair of right and left columns 4 at a rear portion, parallel link members 6 and 6 pivotally supported by the columns 4 at the rear end side, and pivotally supported by front ends of the parallel link members 6 and 6. A top plate 7 movable in the vertical direction, a lock device 9 for regulating the rotation of the parallel link members 6, 6, and a back surface of the top plate 7 for releasing the locked state of the lock device 9. A detection wire member 12 that is bent and formed so as to correspond from the front edge of the side to both side edges and is disposed immediately below the top plate 7;
The knee of a person sitting on the elevating chair C or a part of the elevating chair C comes into contact with the detection wire 12 from below, and the detection wire 12 is pushed up. This allows the top plate 7 to freely move up and down,
A lifting table / chair set wherein the lock device 9 is automatically locked and the top plate 7 is fixed when the contact state with the detection wire 12 is released and the contact state is released. 4. A lock bar 94 having a fan-shaped uneven tooth 91 disposed in a fan shape and movable in a substantially horizontal front-rear direction. Bouncing members 95
On the other hand, the detection wire member 12 is rotatably supported on both sides, and the both sides and the center of the hook bar 94 are formed by a pair of right and left push-pull cables 14. The lifting table / chair set according to claim 3, wherein the lifting table / chair set is connected by the first and second members.