JPH0340183Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a rotating lifting mechanism for the floorboard in a bed with an undulating bed. This invention relates to a rotating lifting mechanism that can prevent the item from being put away.

(Prior Art and its Problems) For electric-operated floorboard elevating beds for patients, etc., it is desirable to take measures to prevent the floorboard from remaining raised in the event of a power outage or failure of the electric motor. As a conventional measure for this, there is a structure in which a manual crank handle can be attached, if necessary, to an appropriate location from the electric motor to the screw shaft that constitutes the rotating lifting mechanism.

However, in such a mechanism, the degree of freedom of the mechanism is reduced in terms of the arrangement of the manual crank handle so that it can be easily operated, and the screw shaft is manually rotated instead of using an electric motor to lower the floorboard. However, there is a problem in that it takes time to lower it to a horizontal position, and if it is urgently necessary to lower it, it cannot be done appropriately.

The present invention aims to solve the above problems.

(Means for solving the problems) The configuration of the present invention is shown in FIGS. 1 to 4 corresponding to embodiments.
To explain based on the drawings, the configuration of the present invention is such that a floor plate support frame 2 rotatably supports one side of a floor plate 1.
A drive shaft 4 is rotatably provided parallel to the rotation axis 3 of the floor plate 1, and a pair of actuating cylinders 5a and 5b are rotatably and movably fitted on both sides of the drive shaft 4, respectively. Push-up arms 6a, 6b for pushing up the floorboard 1 are provided protrudingly on the actuating cylinders 5a, 5b, and the respective actuating cylinders 5a, 5b are urged in opposite directions, and the respective opposing sides and Engagement portions 7a, 7b are formed at corresponding locations on the drive shaft 4, and pull operation levers 8a, 8b are individually provided protruding from the respective actuating tubes 5a, 5b in a direction opposite to the biasing direction. The push operation lever 9 is guided and supported, and the push operation lever 9 is provided with push portions 10 for the actuating cylinders 5a and 5b, respectively.
a, 10b, and the push operation lever 9
Push operation portions 12a, 1 are provided on both sides of the pull operation levers 8a, 8b in close proximity to the pull operation portions 11a, 11b of the pull operation levers 8a, 8b.
2b, and the drive shaft 4 is rotated by a drive mechanism D such as an electric type or a hydraulic type. The engaging portions 7a and 7b are composed of a protruding portion 17 and an engaging recess 18, but the number, shape, etc. thereof may be determined as appropriate.

(Function) In the above configuration, the operation levers 8a, 8b,
When 9 is not operated, each operating cylinder 5
a and 5b are moving in opposite directions due to bias,
It engages with the drive shaft 4 through engaging portions 7a and 7b. In this state, the drive shaft 4 is moved by the drive mechanism D.
When the actuating cylinders 5a and 5b are rotated, the push-up arms 6a and 6b are rotated upward, and the floor plate 1 can be pushed up.

When the floorboard 1 is in the raised position, a power outage or failure of the electric motor, etc. occurs, and it becomes impossible to lower the floorboard 1, so it becomes necessary to lower the raised floorboard 1 as soon as possible. In this case, first, while supporting the floorboard 1, the pull operation lever 8a and the push operation lever 9 are operated on either side of the drive shaft 4, for example, on the a side. When the pull operation lever 8a is pulled, the operating cylinder 5a moves against the force and engages the engaging portion 7.
When the engagement with the drive shaft 4 at step a is released and the pushing operation lever 9 is pushed, the operating cylinder 5b is moved by the pushing part 10b against the force, and the engaging part 7b is moved. The engagement with the drive shaft 4 is released. In this way, in the present invention, the actuating cylinders 5a, 5b on both sides of the drive shaft 4 are connected to either side a,
In case b, each pull operation lever 8a or 8
b and push operation lever 9. As a result of the above operation, both the actuating cylinders 5a and 5b become rotatable, so that the upper arm 6a,
6b is in a state where it can be rotated and lowered, and therefore the floor plate 1
can be lowered freely.

Next time a power outage, restoration, or repair is performed, lift the floor plate 1 with the lower part to its original raised position, or rotate the drive shaft 4 to the corresponding position of the floor plate 1 with the lower part. The actuating cylinders 5a, 5b move due to the force, and engage the engaging portions 7a, 7b again.
As a result, the actuating cylinders 5a, 5b and the drive shaft 4 are engaged with each other, and the drive mechanism D again moves the floor plate 1.
can be raised and lowered.

(Example) To explain the illustrated example in more detail, in the illustrated example, the push operation parts 12a, 12b are replaced by the pull operation parts 11a,
11b, and in such a configuration, both operating parts 11a, 11b, 12a, 12b can be grasped and operated, that is, they can be operated with one hand. Next, in the illustrated example, the upper arms 6a and 6b are
By supporting the tip of the push-up arm by the support ring 14 formed at the push-up point 13 on the floor plate 1, the push-up arm can be fixed when the engagement between the actuating cylinders 5a, 5b and the drive shaft 4 is released as described above. 6a, 6b can be prevented from falling. In addition, push upper arm 6a,
6b can also be prevented from falling by using a spring to bias the actuating cylinders 5a, 5b in the direction of rotation relative to the drive shaft 4 in the upward direction of the push-up arms 6a, 6b. Next, the drive mechanism D in the illustrated example will be explained. This drive mechanism D includes the electric motor 1
5 is converted into a linear motion by a screw shaft type forward/backward mechanism, and this linear motion is converted into a rotational motion of the drive shaft 4 by a drive arm 16 protruding from the drive shaft 4.

(Effects of the invention) As described above, the present invention is configured so that the push-up arm is rotated upward by the rotation of the drive shaft rotatably provided on the floor plate support frame to push up the floor board, and this push-up arm is driven. Since the actuating tube is protruded from the shaft so that it can be freely engaged and disengaged, in the event of a power outage or failure of the drive mechanism while the floor is raised, the disengagement will occur. By performing the operation, the floorboard can be lowered freely, and there is an effect that it is possible to appropriately respond to the urgent need to lower the floorboard. Further, the disengagement operation can be performed on either side of the drive shaft, and can also be grasped, and in this case, there is an advantage that the operation can be performed with one hand. It goes without saying that the floorboard according to the present invention can be applied to any floorboard that goes up and down, including the back floorboard.

[Brief explanation of the drawing]

1 to 4 correspond to the embodiment of the present invention, FIG. 1a is an explanatory perspective view, b is an enlarged view of the main part, FIG. 2 is an explanatory plan view, and FIG. 3a is an explanatory perspective view. , b are an explanatory front view and an explanatory side view of the main parts, respectively, and FIGS. 4a and 4b are explanatory plan views of the main parts showing the operation. Reference numeral 1... Floor plate, 2... Floor plate support frame, 3... Rotation axis, 4... Drive shaft, 5a, 5b... Operating cylinder,
6a, 6b... push upper arm, 7a, 7b... engaging portion,
8a, 8b...Pulling operation lever, 9...Pushing operation lever, 10a, 10b...Pushing part, 11a, 11b
...Pull operation section, 12a, 12b...Push operation section, 1
3... Push-up point, 14... Support wheel, 15... Electric motor, 16... Drive arm, 17... Projection, 18...
Engagement recess, D...drive mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) A floor plate support frame that rotatably supports one side of the floor plate is provided with a drive shaft rotatably parallel to the axis of rotation of the floor plate, and A pair of operating barrels are rotatably and movably fitted on both sides, and each operating barrel is provided with a protruding upper arm for pushing up the floor plate, and the respective operating barrels are biased in opposite directions. ,
In addition, an engaging portion is formed on each opposing side and the corresponding drive shaft, and a pull operation lever is individually provided on each actuating cylinder in a direction opposite to the biasing direction. A push operation lever is guided and supported, and the push operation lever is provided with a pushing part for each actuating cylinder, and push operation parts are configured on both sides of the push operation lever in proximity to the pull operation part of the pull operation lever. A rotating lifting mechanism for a floor plate in a floor plate undulating bed, characterized in that the drive shaft is rotated by an electric or hydraulic drive mechanism. (2) The rotation of the floorboard in the floorboard undulating bed set forth in claim 1 of the utility model registration claim, characterized in that the push operation part is provided outside the pull operation part so that both the operation parts can be grasped and operated. Dynamic lifting mechanism.