JPH0568969B2 - - Google Patents

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 climbs onto or off the floor, it is necessary to store the device in a position where it does not get in the way, and for this reason various types of devices, such as removable and elevating types, have been provided. For example, the device disclosed in Japanese Utility Model Publication No. 1-30170 uses a parallel link mechanism to raise and lower the side rail body corresponding to the entire or most of the longitudinal side portion of the bed, etc., to the above-mentioned upright state. It is configured so that it can be in a stored state.
Conventionally, with such a lifting type side fence,
A person is ascending and descending while holding the main body of the side fence.

(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 sides of a bed, etc., is relatively heavy, and therefore, its lifting and lowering operations are difficult. In addition to placing a relatively large labor burden on not only the user of the patient on the bed, but also the nurse, etc., depending on the position of the side rail main body in the stowed state, use on the bed may be difficult. There is a problem in that the person may not be able to operate the elevator up and down.

The purpose of the present invention is to solve such problems by raising and lowering the side fence body by operating an electric motor, and also to enable manual raising and lowering in the event of a power outage, etc. .

(Means for Solving the Problems) The configuration of the present invention for solving the above problems will be explained with reference to drawings corresponding to embodiments. frame 1
The side fence main body 8 is supported on the side part of the main body 8 so as to be freely raised and lowered, and the lifting operation part 1 of the side fence main body 8 is supported on the floor support frame 1.
A screw shaft 9 is rotatably supported in accordance with the movement range of the screw shaft 9, and an electric motor 10 is provided to drive the screw shaft 9, and the screw shaft 9 and the nut 11 are components of a ball screw. 11 is rotatably supported on an outer support member 14, and the lifting operation section 16 is moved by the outer support member 14, and the nut 1
1 is provided with an engaging member 17, and the outer support member 14 is provided with a stopper member 19 which can be engaged with and disengaged from the engaging member 17 at all times, and the operating means 26 of the stopper member 19 is placed in an appropriate position. It was established.

(Function) In the above configuration, the stopper member 1 is normally
The predetermined portion 21 of 9 is the engagement portion 18 of the engagement member 17
Since the nut 11 is engaged with the outer support member 14, the nut 11 cannot rotate relative to the outer support member 14. When the electric motor 10 is operated to rotate the screw shaft 9 in this 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 moves along with this. do. The movement of the outer support member 14 activates the lifting/lowering operation section 16, and the side fence main body 8 can be moved up and down.

In this way, by operating the electric motor 10, 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 via the lifting actuator 16 due to an external force in the vertical direction applied to the side fence main body 8 is caused by the rotational resistance of the electric motor 10, etc., so that the screw shaft 9 is lower than a predetermined force. Since rotation is prevented at the screw shaft 9 through the nut 11 and the ball 12, it can be supported by the screw shaft 9. Therefore, in this state, the side fence main body 8 cannot be manually raised or lowered.

Then, the operating means 26 causes the stopper member 19 to
When the engagement member 17 is disengaged from the predetermined portion 21 of the nut 11, the nut 11 becomes freely rotatable with respect to the outer support member 14, and therefore the nut 11 can idle around the screw shaft 9. As a result, the nut 11 can move freely along the screw shaft 9 even if it does not rotate, and together with this, the outer support member 14 can also move freely, and the lifting operation part 1
6 is also movable, so 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.

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

In the figure, reference numeral 1 denotes a floor support frame such as a bed, 2 a floor supported by the floor support frame 1 as appropriate, and 3 a base 3 that appropriately supports the floor support frame 1. 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. . Therefore, each of the support parts 4 is provided with a pair of support arms 6a, 6b, each of which is fixed at one side 5a, 5b inside the floor support frame 1 so as to be rotatable in the vertical direction on the width side. and the other sides 7a, 7 of the support arms 6a, 6b, respectively.
b are rotatably fixed to both sides of the side fence main body 8 in the longitudinal direction. The pair of support arms 6a and 6b are rotatably fixed to positions that can support the side fence main body 8 in the vertical direction when it is ascending and in the horizontal direction when it is lowered. Corresponding to one longitudinal side of the floor support frame 1, an electric motor 1 rotatably supports a screw shaft 9 in the width direction of the floor support frame 1 and drives the screw shaft 9.
0 is set. Nut 11 on screw shaft 9
are screwed together, and this screw shaft 9 and nut 1
1 is a component 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 14 in the lateral direction. Support arms 6a configured to correspond to both sides of
A guide frame 1 movably supports the roller 15.
6 is provided, and this guide frame 16 constitutes the lifting/lowering operation part of the side fence main body. The nut 11 is provided with an engaging member 17 in its lateral direction.
The recessed portion 18 serves as 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 a protrusion 21 formed at one end thereof to engage with the recess 18. The protrusion 21 can be freely engaged with and disengaged from the recess 18 by movement of the stopper member 19, and is normally supported by a spring interposed between an actuating part 22a formed at the other end and an actuating part 22b of the outer support member 14. They are moved by the bias of 23 and are in an engaged state. The outer casing 25a at one end of the control cable 24 is fixed to the actuating part 22a of the stopper member 19, and the inner wire 25a is fixed to the actuating part 22b of the outer support member 14.
b is fixed to constitute 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 19 is formed at the other end. The operating portion 22a of the outer support member 14 and the operating portion 22a of the outer support member 14
The nut 11 is moved by the bias of a spring 23 interposed between b and the protrusion 21 formed at one end engages the recess 18, so that the nut 11 cannot rotate relative to the outer support member 14. That is, Natsu 1
1 and the outer support member 14 work together.

As shown in FIG. 3b, when the side fence main body 8 is supported laterally in the space below the floor 2 and is in a working state, the electric motor 10 is actuated to screw the screws. When the shaft 9 is rotated in a predetermined direction, the nut 11 is pushed by the ball 12 and moves to the left in the figure, and the outer support member 14 also moves together with this movement. Due to this movement of the outer support member 14, the roller 15 is moved to the support arm 6 via the guide frame 16.
Push a to the left. This pushing movement causes the support arm 6 to
a rotates clockwise in the figure using the point fixed to the support part 4 on one side 5a as a fulcrum, and the other side 7a rotates and raises the corresponding part of the side fence main body 8 to the upper left in the figure. As the support arm 6a rotates upward, the other support arm 6b also rotates clockwise via the side fence main body 8, and as the pair of support arms 6a and 6b rotate upward, the side The posture of the fence main body 8 gradually shifts from the horizontal state shown in FIG. 3b to the vertical direction, and when the supporting arms 6a and 6b perform a predetermined rotation in this way, it becomes as shown in FIG. 3a. It will be in the vertical direction and will be in the predetermined usage state. In such a state of use, the load applied to the right side of the outer support member 14 via the guide frame 16 and the roller 15 due to the external force applied downward to the support arm 6a via the side fence main body 8 is transferred to the electric motor. Since the screw shaft 9 is prevented from rotating with less than a predetermined force due to the rotational force 10, etc., it can be supported by the screw shaft 9 via the nut 11 and the ball 12.

Next, from the state shown in FIG. 3a, 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 rightward in the figure. The support arm 6a rotates in the counterclockwise direction by an operation opposite to the above, and descends toward the inside of the floor support frame 1. At the same time, its posture gradually shifts to the lateral direction, and it is placed in the space below the floor 2. It is then laterally supported again into the retracted state shown in FIG. 3b.

Next, when the operating lever 27 is pulled, the stopper member 19 springs 23 as shown by the imaginary line in FIG.
An actuating portion 22 formed at the other end to resist the urging of
a moves toward the operating portion 22b of the outer support member 14, the protrusion 21 formed at one end is disengaged from the recess 18, and the engagement is released. Thus, the engagement member 17 and the nut 11 are attached to the outer support member 14.
Therefore, the nut 11 can freely rotate around the screw shaft 9 regardless of the outer support member 14. Therefore, when an attempt is made to manually move the side fence body 8 upward or downward while the operating lever 27 is pulled, the nut 11 idles around the screw shaft 9 and moves along the screw shaft 9. Therefore, 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, Natsuto 1
1 and the outer support member 14 are integrated, so that 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 be used as a fence, and its elevating mechanism may be an appropriate 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, etc., the side fence main body can be manually operated and raised and lowered.

[Brief explanation of drawings]

All the figures correspond to the embodiment of the present invention, and Fig. 1 is an explanatory side view, Fig. 2 is an explanatory front view, and Figs. 3a and 3b show the use state and storage state of the side fence body, respectively. Fig. 4 is an explanatory cross-sectional view of the main part, Fig. 5 is an explanatory longitudinal cross-sectional view of the main part,
FIG. 6 is an explanatory side view of the main parts. Symbol 1... Floor support frame, 2... Floor, 3... Base, 4... Support part, 5a, 5b... One side, 6a, 6b
...Support arm, 7a, 7b...Other side, 8...Side fence body, 9
...Screw shaft, 10...Electric motor, 11...Nut,
DESCRIPTION OF SYMBOLS 12... Ball, 13... Bearing, 14... Outer support member, 15... Roller, 16... Guide frame, 17... Engagement member, 18... Recessed part, 19... Stopper member, 20
...Guide frame, 21...Protrusion part, 22a, 22b...Actuation part, 23...Spring, 24...Control cable,
25a... Outer casing, 25b... Into wire, 26... Operating means, 27... Operating lever,
28...Notch portion.

Claims (1)

[Scope of 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 side rail main body is supported on the floor support frame so as to be able to move up and down, and the side rail main body is supported on the side of a floor support frame of a bed, etc. A screw shaft is rotatably supported and an electric motor is provided for driving the screw shaft, the screw shaft and the nut being components of a ball screw, and the nut being rotatably supported with respect to an outer support member. The lifting actuating portion is moved by the outer support member, and the nut is provided with an engagement member, and the outer support member is provided with a stopper member that can be engaged with and disengaged from the engagement member at all times. Liftable side fence 2 for a bed, etc., characterized in that a means for operating the stopper member is provided at an appropriate location. The other side of each pair of support arms fixed rotatably in the vertical direction on the width side inside the frame is fixed rotatably, so that the side fence main body can be moved vertically when rising and when lowering. The side fence main body is supported in the lateral direction, the screw shaft is rotatably supported in the width direction of the floor support frame, and the outer support member is provided with a roller in the lateral direction, Liftable side fence 3 for a bed, etc., characterized in that the support arm is provided with a guide frame that movably supports the roller; characterized in that the operating means described in item 1 is constituted by a control cable mechanism. Liftable side rails for beds, etc.