JPH0421328Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a mechanism for raising and lowering a floor support frame of a bed, an examination table, a patient carrier, etc.

(Prior art and its problems) Many of the conventional elevating mechanisms in which the floor support frame can be raised and lowered in a horizontal state and can also be tilted have both a drive mechanism for raising and lowering and a drive mechanism for tilting. The device is provided with a drive mechanism for raising and lowering the head side and the foot side, respectively. Furthermore, as disclosed in Japanese Utility Model Publication No. 56-16125, for example, there is a system that uses a set of drive mechanisms to raise and lower the slope, but in this mechanism, the head and foot sides of the floor support frame are linked. In addition to the support rods for raising and lowering, the structure includes support rods for holding each side upward, and the large number of support rods increases cost and weight, and the structure tends to be complicated. There is a problem. 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 3 corresponding to embodiments.
To explain based on the drawings, the present invention has rotating rods 2a and 2b on the lower side of the floor support frame 1 corresponding to the head side and the foot side in the lateral direction of the floor support frame 1.
Rotating arms 3a, 3b are provided protrudingly on both sides of the rotating rods 2a, 2b, and the rotating rods 2a, 2b are connected to each other.
With the rotating arms 3a and 3b of the rotating rods 3a and 3b protruding in the same direction, the rotating arm 3a of one rotating rod 2a is rotatably fixed to the base frame 4, and the rotating arm 3a of the other rotating rod 2a is The rotating arm 3b of 2b is attached to the base frame 4.
Interlocking arms 7a and 7b are rotatably fixed to a floating support arm 5 rotatably fixed to the rotary rods 2a and 2b, respectively, and have interlocking arms 7a and 7b provided with engagement pins 6a and 6b, respectively. An interlocking rod 10 having guide members 9a, 9b formed on both sides with longitudinal guide grooves 8a, 8b in which the engagement pins 6a, 6b are movable is connected to the guide grooves 8a, 8b and the engagement pin 6a, 8b. 6b, the interlocking arms 7a, 7b are connected, and the telescopic drive rod 11 is connected between the interlocking rod 10 and the floor support frame 1. Driving grooves 13a, 13b are formed in the lateral direction on the side of the starting points 12a, 12b, and the floor support frame 1 is provided with lever mechanisms 14a, 14b that can move the guide members 9a, 9b upward. It is.

(Function) The function of the present invention having the above configuration will be explained with reference to the drawings corresponding to the embodiments.

First, as shown in FIG. 2, when the floor support frame 1 is at its lowest position, the engaging pins 6a, 6b
are relatively the starting points 12a, 12 of the guide grooves 8a, 8b.
Since the guide members 9a and 9b are lowered by their own weight, they are engaged with the drive grooves 13a and 13b. In this state, the lever mechanism 14
When the guide members 9a, 9b are moved upward using a, 14b, they can be removed from the drive grooves 13a, 13b.

As shown in FIG. 2, in a state where the engaging pins 6a and 6b are engaged with both of the drive grooves 13a and 13b, the telescopic drive rod 11 is extended and the interlocking rod 10 is moved in the driving direction, that is, as shown in FIG. When moving in the middle left direction, the drive groove portions 13a, 13 of the guide members 9a, 9b
Since b is engaged with the drive pins 6a and 6b,
From the interlocking rod 10 to the interlocking arms 7a, 7b through these
The driving force in the above direction is transmitted to.

Due to this driving force, the rotating arms 3a, 3b move to the third position.
Since it rotates counterclockwise from the state indicated by the two-dot chain line in Figure a to the state indicated by the solid line, the rotating rods 2a, 2b rise along these rotational trajectories, and therefore, these rotating rods 2a, 2b move upward. Both sides of the floor support frame 1 provided with 2b are simultaneously raised.

When the telescopic drive rod 11 is shortened in the raised state as described above, both sides of the floor support frame 1 can be simultaneously lowered by an operation opposite to that described above.

Next, when the floor support frame 1 is in the state shown in FIG.
When the guide member 9b is moved upward by operating , the engagement pin 6b is relatively disengaged from the drive groove portion 13b. On the other hand, the engagement pin 6a on the right side in the figure, where the lever mechanism 14a is not operated, does not come off from the engagement groove 13a and remains engaged.

In this state, when the telescopic drive rod 11 is extended and the interlocking rod 10 is moved in the driving direction in the same manner as described above, the interlocking arm 7a on the right side of the figure is connected to the interlocking rod 10 via the guide member 9a as described above. The driving force is transmitted. However, the engagement pin 6b of the interlocking arm 7b is
Even if the guide member 9b moves, the guide groove 8 will simply move relative to the guide member 9b.
Since it only moves in the direction of the end point within b, no driving force is transmitted from the interlocking rod 10 to the interlocking arm 7b.

For this reason, as shown in FIG. 3b, the rotating arm 3b on the left side in the figure remains as it is, and only the rotating arm 3a on the right side rotates counterclockwise to raise the rotating rod 2a. . In this way, only the side of the floor support frame 1 on which the rotation rod 2a is provided rises and tilts. Then, when the telescopic drive rod 11 is shortened, the side on which the rotation rod 2a is provided is lowered by an operation opposite to that described above. At this time, the engagement pin 6b on the left side of the figure relatively moves in the direction of the starting point within the guide groove 8b, and when it reaches the starting point position, the guide member 9b descends under its own weight and engages with the drive groove portion 13b. do.

In this state, when the guide member 9a is moved upward by the lever mechanism 14a on the right side of the figure, the engagement pin 6a on the right side of the figure comes off the drive groove 13a and moves inside the guide groove 8a in the same manner as described above. The engagement pin 6b on the left side of the figure is now movable, and the engagement pin 6b on the left side in the figure is
Since the engaged state is maintained without coming off from 3b, when the telescopic drive rod 11 is extended and the interlocking rod 10 is moved in the driving direction, the floor support is moved as shown in FIG. 3c by the same operation as described above. Rotating rod 2 of frame 1
Only the side where b is provided rises and slopes.

In this way, in the present invention, when the floor support frame 1 is in the lowest position, the lever mechanism 14
By operating a and 14b, it is possible to select between elevating and lowering and inclining.

(Example) Here, the above configuration will be explained in more detail based on the illustrated example.

First, in the illustrated embodiment, the lever mechanism 14a,
14b rotatably supports operating rods 16a, 16b on support arms 15a, 15b protruding downward from the floor support frame 1;
Operating members 17a, 17b are provided protruding from 6b, and the operating rods 16a, 16b are connected to operating arms 18a, 18b,
The operating lever 2 is operated via the operating rods 19a and 19b.
0a, 20b, and in such rotation, the guide members 9a, 9b are moved upward by the operating members 17a, 17b. In addition, as long as the lever mechanisms 14a and 14b can move the guide members 9a and 9b upward,
Any suitable mechanism can be applied. Next, in the illustrated embodiment, the drive grooves 13a, 13b are formed above the starting points of the guide grooves 8a, 8b to prevent engagement of the engagement pins 6a, 6b from the drive grooves 13a, 13b. The lever mechanisms 14a and 14b are used to lift the guide members 9a and 9b. However, in some cases, the drive groove portion 13
a, 13b are formed at the lower part of the starting point 12 of the guide grooves 8a, 8b, and the engagement is performed by lever mechanisms 14a, 14.
It is also possible to adopt a configuration in which this is done by b. Furthermore, in the illustrated embodiment, the telescoping drive rod 12
Although the elongation direction is the driving direction, it goes without saying that the shortening direction may be the driving direction. In the illustrated embodiment, the telescoping drive rod 11 is directly connected to the interlocking rod 10 via the connecting member 21, but any configuration is possible in which the interlocking rod 10 can be driven by the telescoping drive rod 11. They can be connected as appropriate.

(Effect of the invention) As described above, the present invention allows the rotation rods provided on the lower side of the floor support frame corresponding to the head side and the foot side to be rotated upward in the same direction by the rotation arm in conjunction with each other. the floor support frame can be raised and lowered horizontally, and
Since these interlocking operations and the release of interlocking operations can be operated using a lever mechanism, only the head and foot sides of the floor support frame can be raised to an inclined state, and in this way, the floor support frame can be raised and lowered An advantage is that the tilting can be performed by one set of drive mechanisms, reducing cost and weight. In particular, in the present invention, since the rotation rods corresponding to the head and foot sides of the floor support frame are driven via the interlocking rods, the structure can be simplified, and there are advantages in this respect. However, it has the effect of contributing to cost and weight reduction.

[Brief explanation of drawings]

1 to 3 correspond to an embodiment of the present invention, and FIG. 1 is an explanatory perspective view showing the overall configuration;
FIG. 2 is a schematic side view showing the operation state of the main parts, and FIGS. 3a, b, and c are schematic side views showing the lifting/lowering and tilting operations. Code, 1... Floor support frame, 2a, 2b...
...Rotating rod, 3a, 3b... Rotating arm, 4... Base frame, 5... Floating support arm, 6a, 6b... Engagement pin, 7a, 7b... Interlocking arm, 8a, 8b... Guide Groove, 9a, 9b... Guide member, 10... Interlocking rod, 11... Telescopic drive rod, 12a, 12b... Starting point, 13a, 13b... Drive groove portion, 14a, 14
b... Lever mechanism, 15a, 15b... Support arm,
16a, 16b...operating rod, 17a, 17b...
Actuation member, 18a, 18b... Actuation arm, 19a,
19b... Actuation rod, 20a, 20b... Operation lever, 21... Connection member.

Claims (1)

[Scope of utility model registration request] A rotating rod is provided in the lateral direction of the floor supporting frame on the lower side corresponding to the head side and the foot side of the floor supporting frame, and rotating arms are provided protruding from both sides of each of the rotating rods,
With the rotating arms of each rotating rod protruding in the same direction, the rotating arm of one rotating rod is rotatably fixed to the base frame, and the rotating arm of the other rotating rod is fixed to the base frame so as to be rotatable. The rotating arm is rotatably fixed to a floating support arm rotatably fixed to the base frame, and an interlocking arm provided with an engaging pin is provided protruding from each of the rotating rods, and the rotating arm is rotatably fixed to the base frame. The interlocking rod has guide members on both sides with longitudinal guide grooves that allow the pin to move freely.
The engagement between the guide groove and the engagement pin connects the interlocking arms, and further connects the telescopic drive rod between the interlocking rod and the floor support frame. A lifting and lowering tilting mechanism for a floor support frame, characterized in that a drive groove is formed in the lateral direction of the floor support frame, and the floor support frame is provided with a lever mechanism that can move and operate the guide member upward.