JPH03128010A - Liftable side rails for beds, etc. - Google Patents

Abstract

PURPOSE:To enable the operation of the side fence of a bed with light labor even by a user on the floor part of the bed or the like, and also to enable the raising or lowering operation by hand in the event of power failure or the like by providing an engaging member to a nut, and providing a disengageable stopper member, which is normally engaged with the engaging member, to an outside supporting member, and also by providing an operation means of the stopper member at an appropriate place. CONSTITUTION:On both sides in the lateral direction of an outside supporting member 14, rollers 15 are provided, and also to supporting arms 6a which have been made up so as to correspond to both sides of the outside supporting member 14, a guide frame 16 for movably supporting the rollers 15 is provided. In the lateral direction of a nut 11, an engaging member 17 is provided, and it is so constituted that it can be idly turned around a screw shaft 9, while on the other hand, to the outside supporting member 14 a stopper member 19 is provided so as to be movable in the axial direction through a guide frame 20. And to the operating part 22a of the stopper member 19 the outer casing 25a on the one end of a control cable 24 is fixed, and to the operating part 22b of the outside supporting member 14 an inner wire 25b (not shown) is fixed to constitute an operation means 26 (not shown).

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an elevating side rail for a bed, a patient carrier, a bed, etc.

(Prior art) Side rails are installed on the longitudinal sides of beds, etc. to prevent users and bedding from falling. When in use, side rails are erected horizontally on the floor, and are used for bed making and medical examinations. Alternatively, when the user gets on or off the floor, it is necessary to store it in a position that does not get in the way.
Various types are available, such as removable type and elevating type. For example, in the device disclosed in Japanese Utility Model Publication No. 1-30170, the side rail main body corresponding to the entire or most of the longitudinal side portion of the bed etc. is raised and lowered using a parallel link mechanism to bring it into the upright state. It is configured so that it can be in a stored state. Conventionally, in such an elevating type side fence, a person lifts and lowers the fence by holding the side fence main body.

(Problems to be Solved by the Invention) As mentioned above, a so-called full-face fence in which the side fence body corresponds to the entire or most of the longitudinal side of a bed etc. is relatively heavy, and therefore the lifting and lowering operations thereof are difficult. In addition to placing a relatively large labor burden on the user of the bed, such as the patient, as well as the nurse, etc., depending on the position of the side rail body in the stowed state, the user on the bed may be unable to go up and down. The problem is that there are times when it cannot be operated.

The object of the present invention is to solve such problems by raising and lowering the side fence main body by operating an electric motor, and also to make it possible to raise and lower it manually in the event of a power outage or the like.

(Means for Solving the Problems) The configuration of the present invention for solving the above problems will be explained with reference to the drawings corresponding to the embodiments. 1. The elevating type side fence of the present invention provides floor support for a bed etc. A side fence main body 8 is supported on the side of the frame 1 so as to be freely raised and lowered, and a screw shaft 9 is rotatably supported on the floor support frame 1 in accordance with the movement range of the lifting/lowering operation part 16 of the side fence main body 8. In addition, an electric motor 10 for actively driving the screw shaft 9 is provided, and the screw shaft 9 and the nut 11 are components of a ball screw.
1 is rotatably supported on an outer support member 14, and the elevating/lowering operation part 16 is moved by the outer support member 4, and the nut 11 is provided with an engaging member 17, and the outer support member 14, the engagement member 17 is normally
A stopper member 19 that can be freely engaged with and disengaged is provided, and operating means 26 of the stopper member 19 are provided at appropriate locations.

(Function) In the above configuration, since the two predetermined portions of the stopper member 19 are always engaged with the engagement portion 18 of the engagement member 17, the nut 11 is rotated relative to the outer support member 14. is impossible. When the electric motor 10 is operated to rotate the screw shaft 9 in the bent state, the nut 11 is pushed in the axial direction via the balls 12 and moves along the screw shaft 9, and the outer support member 14 is moved along with the nut 11. moves. Then, due to the movement of the outer support member 14, the lifting operation section 16
is activated, and the side fence main body 8 can be raised and lowered.

In this way, by operating the electric motor 1o, the side fence main body 8 can be raised and lowered from the used state to the stored state and from the stored state to the used state, and even a user on the floor 2 such as a bed can operate it with light effort. It can be performed. In use, the load applied to the outer support member 14 through the lifting actuator 16 due to an external force in the vertical direction applied to the side fence body 8 is caused by the rotational resistance of the electric motor 10, etc., when the screw shaft 9 is rotated under a predetermined force or less. Since rotation is prevented, it can be supported by the threaded shaft 9 via the nut 11 and ball 12. Therefore, in this state, the side fence main body 8 cannot be manually raised or lowered.

Therefore, when the engagement between the predetermined portion 21 of the stopper member 19 and the engagement member 17 is released by the operating means 26, the nut 1
1 is rotatable relative to the outer support member 14, and therefore the nut 1 can idle around the screw shaft 9. Due to this idle rotation, the nut 11 moves along the screw shaft 9 even if it does not rotate. At the same time, the upper outer support member 4 is also movable, and the lifting operation part 6 is also movable, so even if the screw shaft 9 cannot rotate due to a power outage, etc., the side fence main body 8 can be operated manually. You can use it to raise and lower it.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 is a floor support frame such as a bed, 2 is a floor supported by the floor support frame as appropriate, and 3 is a base 3 that supports the floor support frame 1 as appropriate. The specific configuration of is arbitrary.

In the illustrated example, support parts 4 for supporting support arms and the like described later are provided above on both sides in the longitudinal direction of the floor support frame 1, and a floor part 2 is formed below the upper end of the support parts 4. . Each of the support parts 4 is provided with a pair of support arms 6a and 6b, each of which has one side 5a and 5b fixed to the inside of the floor support frame 1 so as to be rotatable in the vertical direction on the width side. At the same time, the other sides 7a and 7b of the support arms 6a and 6b are rotatably fixed to both sides of the side fence main body 8 in the longitudinal direction. The pair of support arms 6at6b are rotatably fixed to positions that can support the side fence main body 8 in the vertical direction when rising and in the horizontal direction when the side fence main body 8 is lowered. Corresponding to one longitudinal side of the floor support frame 1, an electric motor 10 rotatably supports a screw shaft 9 in the width direction of the floor support frame 1 and drives the screw shaft 9.
has been established. A nut 11 is screwed onto the screw shaft 9, and the screw shaft 9 and the nut 11 are components of a ball screw. The reference numeral indicates a ball 12 which is provided so as to be able to circulate freely as appropriate. The nut 11 is rotatably supported on an outer support member 14 via a bearing 13 such as a ball bearing, and rollers 15 are provided on both sides of the outer support member 4 in the lateral direction. A guide frame 16 for movably supporting the roller 15 is provided on the support arm 6a configured to correspond to both sides of the roller 14.
The guide frame 16 constitutes a lifting/lowering operation section of the side fence main body. The nut 11 is provided with an engaging member 17 in its lateral direction, and this engaging member F is configured to be freely rotatable around the threaded shaft 9, and is provided with irregularities on the outside thereof so that the engaging member F can rotate freely around the screw shaft 9. 18 is an engaging portion. On the other hand, a stopper member 19 is provided on the outer support member 14 so as to be movable in the axial direction by means of a guide frame 20, and the stopper member 19 has two protrusions at one end that engage with the recess 18. This protrusion 21 is caused by movement of the stopper member top 9.
It can be freely engaged and detached from the recess 18, and normally the actuating portion 22a formed at the other end and the actuating portion 22b of the outer support member 14 are connected to each other.
They are moved into engagement by the bias of a spring 23 interposed therebetween.

An outer casing 25a at one end of the control cable 24 is fixed to the actuating part 22a of the stopper member top 9, and an inner wire 25b is fixed to the actuating part 22b of the outer support member 14, thereby forming the operating means 26.

The other end of the control cable 24 is provided with an operating lever 27 fixed to the inner wire 25b.

Therefore, when the control cable 24 is not operated by the operating lever 27, as shown by the solid line in FIG. 4, FIG. 5, or FIG. 6, the stopper member 1
9 is moved by the bias of a spring 23 interposed between the actuating part 22a formed at the other end and the actuating part 22b of the outer support member 14, so that the protruding part 21 formed at one end engages with the recessed part 8. Therefore, the nut 11 is attached to the outer support member 1
4, i.e. the nut 11 and the outer support member 14 move in unison.

As shown in FIG. 3(b), when the side fence main body 8 is laterally supported in the space below the floor 2 and in a retracted state, the electric motor 10 is activated. When the screw shaft 9 is rotated in a predetermined direction, the nut 11
2 and moves to the left in the figure, and the outer support member 14 also moves together with this. Due to this movement of the outer support member 14, the roller 15 pushes the support arm 6a leftward via the guide frame 16. Due to this pushing movement, the support arm 6a rotates clockwise in the figure using the point where it is fixed to the support part 4 on one side 5a as a fulcrum, and the other side 7a moves the corresponding point on the side fence main body 8 toward the upper left in the figure. Rotate and rise. Such support arm 6a
As the rotation rises, the other support arm 6b is moved through the side fence body 8.
The pair of supporting arms 6a rotate clockwise in conjunction with each other.
, 6b are rotated in conjunction with each other, the posture of the side fence main body 8 gradually shifts from the horizontal state shown in FIG. When the device is moved, it becomes vertically oriented as shown in FIG. 3(a), and is in a predetermined state of use. In such a state of use, an external force applied downward to the support arm 6a via the side fence body 8 causes the
Outer support member 1 via guide frame 16 and roller 15
4 must be supported by the screw shaft 9 via the nut 11 and the ball 12, since the screw shaft 9 is prevented from rotating below a predetermined force due to the rotational resistance of the electric motor 10, etc. Can be done.

Next, from the state shown in FIG. 3(a), the screw shaft 9 is rotated in the opposite direction to that described above by the reverse rotation or reverse gear mechanism of the electric motor 10, and the nut 11 and the outer support member 14 are moved to the right in the figure. , the support arm 6a rotates counterclockwise by the operation opposite to the above.

In this way, while descending toward the inside of the floor support frame 1, its posture gradually shifts to the lateral direction.

It is laterally supported in the space below the floor 2 and returns to the stored state shown in FIG. 3(b).

Next, when the operating lever 27 is pulled, the stopper member 19 resists the biasing force of the spring 23 as shown by the imaginary line in FIG. , the protrusion 21 formed at one end is disengaged from the recess 18, and the engagement is released. The engagement member 17 and thus the nut 11 are thus able to rotate relative to the outer support member 14, so that the nut 11 can idle around the threaded shaft 9 relative to the outer support member 14. Therefore, if you try to manually move the side fence body 8 upward or downward while the operating lever 27 is pulled, the nut 11 will idle around the threaded shaft 9 and move along the threaded shaft 9. By such movement, the side fence main body 8 can be smoothly raised and lowered. Once the predetermined elevation has been performed in this way, when the operating lever 27 is released, the stopper member 19 moves under the bias of the spring 23, and the protrusion 21 formed at one end engages with the recess 18 again. Therefore, since the nut 11, the outer side, and the support member 14 are integrated, they can receive the external force applied to the side fence main body 8 as described above. In this way, even if the screw shaft 9 cannot rotate due to a power outage or the like, the side fence main body 8 can be manually operated to move it up and down.

In the illustrated embodiment, reference numeral 28 is a notch for narrowing the width of the side fence main body 8 at a predetermined location in the stored state. Furthermore, in the above embodiments, the side fence is a so-called full-face fence in which the side fence main body 8 corresponds to the whole or most of the longitudinal side of the bed, etc. It may also be used as a container, and its elevating mechanism may be an appropriate mechanism such as a mechanism using a parallel link mechanism.

(Effects of the Invention) As described above, the present invention allows the main body of the side fence to be raised and lowered from the used state to the stored state and from the stored state to the used state by the operation of the electric motor. Even a person can operate the side fence with light effort, and even if the electric motor becomes inoperable due to a power outage or the like, the side fence main body can be manually operated to raise and lower the side fence.

[Brief explanation of the drawing]

All of the figures correspond to embodiments of the present invention, with Fig. 1 being an explanatory side view, Fig. 2 being an explanatory front view, and Figs. 3(a) and 3(a).
b) shows the usage status of each side fence body. FIG. 4 is an explanatory cross-sectional view of the essential parts; FIG. 5 is an explanatory longitudinal sectional view of the essential parts; FIG.
The figure is an explanatory side view of main parts. Code 1... Floor support frame, 2... Floor, 3...
・Base, 4...Support part, 5a, 5b - One side, 6a, 6
b...Support arm, 7a, 7b...Other side, 8...Side fence body, 9...Screw shaft, 10...Electric motor, 11
... Nut, 12 ... Ball, 13 ... Bearing, 1
4...Outside support member, 15...Roller, 16...
・Guide frame, F... Engagement member, 18... Recess, 19
...Stopper member, 20...Guide frame, 21...
Projection part, 22a, 22b... Actuation part, 23... Spring, 24... Control cable, 25a... Outer casing, 25b... Inner wire, 26
... Operating means, 27... Operating lever 28... Notch portion. Figure 3(a)

Claims (3)

[Claims] (1) A side rail main body is supported on the side of a floor support frame such as a bed so that it can be raised and lowered, and a screw shaft is rotated on the floor support frame in accordance with the movement range of the lifting/lowering operation part of the side rail main body. An electric motor is provided to freely support the screw shaft and drive the screw shaft, and the screw shaft and the nut are components of a ball screw, and the nut is rotatably supported with respect to the outer support member. The lifting actuating portion is moved by a member, and the nut is provided with an engaging member, and the outer support member is provided with a stopper member that can be engaged with and detached from the engaging member at all times, and the stopper An elevating type side fence for a bed, etc., characterized by having a means for operating the members at appropriate locations. (2) The side fence body described in paragraph 1 has a pair of support arms fixed on both sides in the longitudinal direction thereof, with one side fixed to the inside of the floor support frame so as to be rotatable in the vertical direction on the width side. The other side of each is rotatably fixed to support the side fence main body in the vertical direction when rising and the side fence main body when descending in the horizontal direction, and the screw shaft is connected to the floor part. A bed supported rotatably in the width direction of a support frame, further comprising a roller provided on the outer support member in the transverse direction, and a guide frame provided on the support arm for movably supporting the roller. Liftable side fences such as (3) The operating means described in paragraph 1 is an elevating type side fence of a bed, etc., characterized in that it is constituted by a control cable mechanism.