JPH03155862A - Elevation mechanism for floor part supporting frame in dorsal stand and dorsal stand provided with the same - Google Patents

Abstract

PURPOSE:To perform an elevating operation smoothly without generating the collision of the terminal part of a floor part supporting frame with a wall, etc., and movement of a foot member when performing elevation by performing the elevating operation of the foot member and the part supporting frame coming in contact with a floor without changing a relative position in a lateral direction. CONSTITUTION:When a progression driving mechanism 12 is operated and the first supporting member 4 of an elevation mechanism is moved leftward at a state where the floor part supporting frame 1 is supported at a low position, a first supporting link 10a and a second supporting link 11 approach fulcrums f1 and f2, and perform parallel motion in a direction separating from fulcrums fx and f3, and simultaneously, another first supporting link 10b also performs the parallel motion. Distance between the foot member 9 and a second supporting member 5 by such parallel motion can be increased, thus, the corresponding part of the floor part supporting frame 1 can be ascended.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lifting mechanism for a floor support frame in a supine table such as a bed, an examination table, or a patient carrier, and a supine table equipped with the lifting and lowering mechanism. It is.

(Prior art and its problems) As a mechanism for raising and lowering a floor frame in a bed or the like, first, as shown in FIG. The base frame C and the floor support frame a are connected by a rotating arm d, and this mechanism rotates the rotating arm d in conjunction with the rotation of the driving arm f by the driving rod e. The parts of the floor support frame a corresponding to the respective rotary arms d are raised and lowered by moving the rotary arms d.

However, since this elevating mechanism has a base frame C, the space below the floor support frame a cannot be used as a storage area for stool lockers, etc., and a large number of structural materials are required, resulting in cost and weight. There is a problem with the increase in

Conventionally, as shown in FIG. 5(b), a telescopic leg g such as a screw shaft type is attached directly below the floor support frame a, and the telescopic leg g is expanded and contracted to form the floor support frame. There is a device that lifts and lowers the corresponding part of a, and although this lifting mechanism does not have the above-mentioned problems, the lifting stroke is thick (so the telescopic leg g is relatively long even in its shortest position). Therefore, there is a problem that the minimum height of the floor support frame a becomes relatively high, making it inconvenient for getting on and off the vehicle.

Further, as shown in FIG. 5(C), a support member protruding below the floor support frame a and a leg i are connected by a plurality of support links j constituting a parallel movement mechanism, and the There is a mechanism in which one of the links j is rotated in conjunction with the rotation of the drive arm f by the drive rod e to raise and lower the corresponding part of the floor support frame a. Although there is no problem, the leg i moves in the left and right directions in the diagram when going up and down, so if a caster is provided, the position will shift each time it goes up and down, and if a stopper is placed on the caster, it will be difficult to move. Since it moves, it places a burden on it, leaves marks on the floor, and requires a lot of force.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The structure of the present invention for solving the above-mentioned problems will be explained with reference to FIGS. 1 to 4 corresponding to the embodiments. A first support member 4 attached to the rail 3 and movable in the longitudinal direction of the floor support frame 1, and a position appropriately spaced from the first support member 4 in the longitudinal direction. a second support member 5 fixed to the first support member 5, and the first support member 4 and the leg member 9 are connected by a plurality of first support links 10a, 10b so as to constitute a parallel movement mechanism; Any one of the plurality of first support links 10a and the second support member 5 are connected by the second support link 11 so as to constitute a parallel movement mechanism together with the first support member 4 and the leg member 9. A forward/backward drive mechanism 12 is provided between the first support member 4 and the floor support frame 1.

In the above configuration, the advancing/retracting drive mechanism 12 may be configured using a screw shaft type advancing/retracting mechanism, or may be configured using a gas spring 1.
It is convenient to have a configuration using 9.

Further, the present invention provides the above-mentioned elevating mechanism on both the head side H and the foot side F of the floor support frame 1, or on the head side H.
Alternatively, it can be configured on either side of the foot side F to configure a supine table. In the former configuration, the forward and backward drive mechanisms 12 can be configured to be able to operate independently, or can be configured to be interlocked by an interlocking mechanism 18.

(Operation) The operation of the present invention having the above configuration will be explained with reference to the above-mentioned figures.

First, in a state where the floor support frame 1 is supported at a low position as shown in FIG. When the member 4 is moved to the left, the first support link 10a and the second support link 11 perform a parallel movement in the direction in which the fulcrums f+ and f2 approach and the fulcrums f2 and f move away from each other, and at the same time, the other first support link 10a and the second support link 11 The support link 10b also moves in parallel.

This parallel movement increases the distance between the leg member 9 and the second support member 5, and thus the corresponding portion of the floor support frame 1 can be raised as shown by the two-dot chain line in the figure. In addition, in this state, by operating the advancing/retracting drive mechanism 12 in the opposite direction and moving the first support member 4 to the right, the floor support frame 1 can be lowered by the operation opposite to that described above. The lifting and lowering of the floor support frame 1 is carried out by the first and second support links lo, which mutually constitute a parallel motion mechanism.
a, fob, 11, the floor support frame 1 does not move laterally when going up and down. Furthermore, when going up and down, the first support member 4 only moves along the rail 3, and there is no member that moves above it, so it is easy to design the support mechanism for the floor 2 on the floor support frame 1. be.

When the above-mentioned elevating mechanisms are configured on both the head side H and foot side F of the floor support frame 1, if the elevating mechanisms on both sides are operated in the same direction at the same time or in succession, the floor The support frame 1 can be raised parallel to the state shown by the solid line in FIG. It is also possible to tilt it to the state shown in FIG. 2(b) or FIG. 2(c) by operating the same. Further, the elevating mechanisms on both sides can be configured to be interlocked, and by this interlocking, the floor support frame 1 can be moved up and down or tilted. On the other hand, if the elevating mechanism is configured on either the head side H or the foot side F of the floor support frame 1, the floor support frame 1 can be tilted by the elevating mechanism.

(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 of a supine table such as a bed or a patient carrier, and an appropriate floor 2 is supported on this floor support frame 1. The floor support frame 1 is provided with rails 3 on each of its head side H and foot side F, and a first support member 4 is attached to the rails 3, and the long flat side of the floor support frame 1 is installed. It can be moved freely in any direction. Further, a second support member 5 is fixed at a position away from the rail 3 toward the end side of the floor support frame 1. First support member 4
consists of a running base part 7 provided with rollers 6 that are attached to a groove-shaped rail 3 and run along the rail 3, and a support arm 8 that is vertically disposed below the running base part 7. Ori,
A plurality of first support links 10a, 10b are connected between the support arm 8 and the leg member 9 so as to constitute a parallel movement mechanism.

The leg member 9 is provided with a suitable castor 21.

Further, the first support link 10a and the second support member 5 are connected to the second support link 11 so as to constitute a parallel movement mechanism together with the first support member 4 and the leg member 9. A forward/backward drive mechanism 12 is provided between the first support member 4 and the floor support frame 1. The advancing/retracting drive mechanism shown in FIGS. 1, 2, and 4 utilizes a screw shaft type advancing/retracting mechanism, in which a screw shaft 14 is freely rotatable on a support arm 13 protruding from the lower side of the floor support frame 1. At the same time, a nut 15 screwed onto the threaded shaft 14 is supported on the support arm 8. A rotary drive source 17 is supported by a support arm 16 protruding from the lower side of the floor support frame 1, and its rotation shaft is connected to the screw shaft 14. In the embodiments shown in FIGS. 1 and 2, an electric motor is provided as a rotary drive source 17 for each threaded shaft 14 of the lifting mechanism on the head side H and foot side F of the floor support frame 1, and each is independently operated. On the other hand, in the embodiment shown in FIG. 4, the gear train 18 is an interlocking mechanism, and the common electric motor 1
7 to operate the respective screw shafts 14 in conjunction with each other. In addition, the advance/retreat drive mechanism 1 shown in FIG.
2 is composed of a gas spring 19, that is,
Both ends of the gas spring 19 are connected to support arms 8 and 20, respectively, to constitute a forward and backward drive mechanism 12.

In the state shown by the solid line in FIG. 2(a), when the electric motor 17 corresponding to the lifting mechanism on the left side of the figure is activated to rotate the screw shaft 14 in a predetermined direction, the nut 15 gradually moves to the left. Since the first support member 4 is thus moved to the left, the corresponding part of the floor support frame 1, that is, the head side H, is raised by the above-described operation, and the head side H is raised as shown in FIG. 2(c). It can be tilted upward. On the contrary, the second
In the state indicated by the solid line in Figure (a), the electric motor 17 corresponding to the lifting mechanism on the right side of the figure is operated to rotate the screw shaft 14 in a predetermined direction to move the nut 15 to the right and move the nut 15 to the first support. By moving the member 4 to the right, the corresponding part of the floor support frame 1, that is, the foot side F, is raised, as shown in FIG. 2(b).
The foot side F can be tilted upward as shown in FIG. In addition, in the state shown by the solid line in Fig. 2 (a), both sides H
By operating the electric motor 17 corresponding to the lifting mechanism of , F as described above, the floor support frame 1 can be raised in parallel as shown by the two-dot chain line in FIG. 2(a). In the configuration shown in the figure, when the common electric motor 17 is operated, the screw shafts 14 corresponding to the lifting mechanisms on both sides H and F are simultaneously rotated in a predetermined direction by the gear train 18, and the nuts 15 are moved away from each other. Alternatively, the floor support frame can be raised and lowered in parallel by moving in the direction approaching the frame as shown in FIG. 2(a).The configuration of the gear train 18 in FIG. Although the configuration is such that the rotation is interlocked to rotate in the opposite direction, it is also possible to configure the rotation in the opposite direction. In this case, the interlocking allows the floor support frame 1 to be tilted. Drive source 17 that rotates the screw shaft
In addition to being an electric motor, it can also be a crank handle, for example, as shown by the two-dot chain line in Fig. 4.
In the illustrated embodiment, the floor support frame 1 is operated in the same way as described above by operating gas springs 19 in place of the screw shaft type advance/retreat drive mechanism 12 in the configurations of FIGS. 1 and 2. Can be raised and lowered in parallel and tilted.

(Effects of the Invention) As described above, the present invention allows the leg members and the floor support frame that are in contact with the floor to move up and down without changing their relative positions in the lateral direction. This has the effect that lifting and lowering operations can be performed smoothly without the end of the support frame colliding with a wall or the like, or the leg members moving.

[Brief explanation of the drawing]

Figures 1 to 4 correspond to embodiments of the present invention, with Figure 1 being an explanatory plan view of an example, and Figures 2 (a) and (b)
, (c) are explanatory side views showing the operation of the configuration of FIG. 1, and FIGS. 3 and 4 are explanatory plan views of the other side. Moreover, FIGS. 5(a), 5(b), and 5(c) are explanatory side views of the conventional example. Code 1... Floor support frame, 2... Floor, 3...
-Rail, 4...First support member, 5...Second support member, 6...Roller 7...Travel base portion, end-
- Support arm, 9... Leg member, 10a, 10b... First support link, 11... Second support link, 12...
・Advance/retreat drive mechanism, 13, 16.20...Support arm, 14
...Screw shaft, 15...Nut, 17...Rotary drive source (electric motor, crank handle), 18...Gear train, 19...Gas spring, 21...Casters. 393-6, Target of correction 1. Display of the case 1999 Patent Application No. 295425 2, Name of the invention Lifting mechanism for the floor support frame in a supine table and a supine table 3 equipped with the lifting mechanism, Person making the amendment Relationship to the case Patent applicant Address 2-14-5 Higashisuna, Koto-ku, Tokyo Name Paramount Bed Co., Ltd. Representative Ryusuke Kimura 4, Agent Address 101 (294) 7341~
2 Address: 1-21 Kanda Nishiki-cho, Chiyoda-ku, Tokyo Map 7, Figure 5 (a) from the "Brief explanation of the drawing" column in the statement of contents of the amendment,
In lieu of the amendment to delete the explanations in (b) and (c), we will submit the drawings in Figures 5 (a), (b), and (c) based on this document. 8. Inventory drawing of attached documents

Claims (6)

[Claims] (1) A first support member attached to the floor support frame and movable in the longitudinal direction of the floor support frame, and a position appropriately spaced from the first support member in the longitudinal direction. a fixed second support member, the first support member and the leg member are connected by a plurality of first support links so as to constitute a parallel movement mechanism; Any of the links and the second support member are connected by a second support link so as to constitute a parallel motion mechanism together with the first support member and the leg member, and the first support member and the floor Lifting mechanism for a floor support frame in a supine table, characterized in that a forward/backward drive mechanism is provided between the support frames. (2) The advancement/retraction drive mechanism according to claim 1 is a mechanism for raising/lowering a floor support frame in a supine table configured using a screw shaft type advancement/retraction mechanism. (3) The advancing/retracting drive mechanism according to claim 1 is a lifting/lowering mechanism for a floor support frame in a supine table configured using a gas spring. (4) A supine table characterized in that the elevating mechanism according to claim 1 is configured only on either the head side or the foot side of the floor support frame. (5) A supine table characterized in that the elevating mechanism according to claim 1 is configured on both the head side and the foot side of the floor support frame, and a forward and backward drive mechanism that can be operated independently on each side is provided. (6) The elevating mechanism according to claim 1 is arranged on both the head side and the foot side of the floor support frame, and the advancing and retracting drive mechanisms that can operate these mechanisms are interlocked by an interlocking mechanism. supine table