JPH0623003A - Hydraulic actuator for operating table, treating table and the like - Google Patents

Abstract

PURPOSE:To enable adaptation to an upper bed having various functions to be performed by various hydraulic actuations by a method wherein a hydraulic actuator for treating tables, operating tables and the like is built with a simple construction and noises are reduced using a hydraulic cylinder while a base table part is separated from the upper bed. CONSTITUTION:A base part namely, a lower drive section is provided with a cylinder 5 for drive transmission and an engaging rod 6a is provided at the tip part of a piston rod 6 of the transmission cylinder 5 for driving. The engaging rod 6a is made to interlock an engaging rod 12a which is provided at a lower part on the side of the upper bed and positioned at the tip part of a piston rod 12 of a cylinder 11 for distribution so arranged to let pressure oil flow into or out of a cylinder 16 for operation for tilting a back rest 22 or a leg plate 24 on the side of the upper bed by b means of a connecting rod 7 while the engaging rod 6a or 12a is insertedly fit into the connecting rod 7 being allowed to load or unload. Thus, the hydraulic actuator for operating tables, treating tables or the like enables the separation of the drive section on the side of the base from the upper bed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic operating device for an operating table and a treatment table, which is capable of separating a seat or a bed from a base.

[0002]

2. Description of the Related Art For the operation of the backrest of the upper bed and the leg plate of the conventional separation type operating table and treatment table, the gears and screws of the motor mounted on the upper portion are used to tilt the table. Was there. In this case, the upper bed part and the base drive part are connected by a large-scale electrical connection such as the above-mentioned motor drive, and when the upper bed side and the base side drive part are separated, a joint is made by a plug. In most cases, they were combined.
As another method, a motor, a gear, etc. are provided in the base drive unit, and a backrest or a leg plate on the upper bed side is engaged by engaging with an operating unit for operating the operating portion of the upper bed unit by a clutch or the like. It was working.

[0003]

In the case of the above-described conventional backrest or leg plate which is operated by an electric joint, the operation table and the upper and lower separable operation table of the base and the upper bed portion, the upper bed side. Since a motor, a gear, a screw, etc. must be arranged inside the container, the structure is complicated, a large volume of the upper bed portion is required, and the bulk is large. Moreover, a large-scale electrical connection is required, which may cause a failure.

Further, when a motor, a gear, etc. are arranged in the drive unit on the base side and transmission is performed by a clutch, etc.,
Similar to the former, the structure is complicated, the volume of the upper bed portion is required, and the volume is large. Further, both of them are driven by a motor, so that a speed reducer having a larger capacity is required, which causes a problem of noise.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a hydraulic actuating device for an operating table, a treatment table, etc. for achieving the above-mentioned object, wherein a drive transmitting cylinder operated by a motor pump is provided in a base side driving part. 5 is provided, and an engagement rod 6a is provided at the tip of the piston rod 6 of the drive transmission cylinder 5.
Is stuck. Also, the back plate 22 or the leg plate 2 is locked to the fixed plate 8 fixed to the base side plate 9 with the fitting pin 10.
Distributing cylinder 11 configured to send pressure oil is provided in an operating cylinder 16 for actuating 4 and the like. An engaging plate 12a is fixed to the tip of the piston rod 12 of the distributing cylinder 11.

Between the engaging rod 6a fixed to the tip portion of the piston rod 6 of the drive transmission cylinder 5 and the engaging rod 12a fixed to the tip portion of the piston rod 12 of the distribution cylinder 11. The connecting rod 7 is detachably fitted and interlockable. Further, the distribution cylinder 11 is operated by the operation of the drive transmission cylinder 5, and the partitions 11a and 11b of the distribution cylinder 11 are operated.
More pressure oil flows in and out through the hydraulic hoses 13 and 14, and the operating cylinder 16 is operated by operating the distributing cylinder 11 in the left-right direction.
(In FIG. 1, only the backrest is operated).

Further, a bracket 18 is provided at the tip of the piston rod 17 of the operating cylinder 16,
A rotary shaft pin 19 is fitted and a link 20 is rotatably supported. The other end of the link 20 is connected to a pin 21 which is rotatably supported and fixed to the base of a backrest 22. Therefore, the backrest 22 can be laid down by operating the piston rod 17 of the operating cylinder 16. As mentioned above, since it is hydraulically operated,
There is no need for a large-capacity reducer, and no need for large-scale electrical wiring. Further, since it is hydraulically actuated and has a small capacity hydraulic cylinder, noise is alleviated and its structure is not complicated, so that cost is also reduced.

[0008]

[Operation] When the backrest is laid down, when pressure oil is sent by the motor pump to the section 5a of the drive transmission cylinder 5 provided in the lower drive part, the piston rod 6 moves to the right, The connecting rod 7 locked to the engaging rod 6a at the front end of 6 moves the engaging rod 12a fixed to the front end of the piston rod 12 of the distribution cylinder 11 to the right.

As a result, when the piston rod 12 of the distributing cylinder 11 moves to the right, the pressure oil in the compartment 11b passes through the hydraulic hose 14 and the operating cylinder 1
6 into the compartment 16b, and the operating cylinder 16
The piston rod 17 is moved leftward by the pressure of the section 16b. By the movement of the piston rod 17 of the operating cylinder 16, the link 20 pivotally supported by the bracket 18 at the tip of the piston rod 17 is moved leftward, and the rotation shaft pin 21 provided at the base of the backrest 22 is moved. Is turned to lie down on the backrest 22.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall vertical side view of a hydraulic operating device incorporated in an operating table according to the present invention, FIG. 2 is an enlarged vertical side view of a hydraulic operating portion, and FIG. 3 is an enlarged connecting rod between cylinders. Fig. 4 is a vertical side view, Fig. 4 is an enlarged vertical front view of a connecting rod between cylinders, and Fig. 5 is an embodiment of a block circuit diagram relating to hydraulic operation. However, the motor pump for sending the pressure oil to the drive transmission cylinder 5 is omitted, and only one actuating cylinder 16 is disclosed in this embodiment.

According to FIGS. 1 and 2, in the lower drive transmission portion, 1 is a base mounted on a floor or the like, 2 is a substrate standing on the base, and 3 is a substrate 2. The fixed fixing plate 5 is a drive transmission cylinder and is fixed to the mounting plate 4.
Reference numeral 6 denotes a piston rod which reciprocates in the left and right directions in the compartments 5a and 5b of the drive transmission cylinder 5, and an engaging rod 6a is fixed to the tip end portion of the piston rod 6. 8
Is a side plate fixed to the substrate 2, 11 is a distribution cylinder, which can be locked to the fixed plate 8 by a fitting pin 10.

The distribution cylinder 11 has a compartment 1
1a and 11b are arranged, a piston rod 12 is fitted therein so as to reciprocate in the left-right direction, and a fitting rod 12a is fixed to the tip end portion of the piston rod 12. 7
Is a connecting rod, and the connecting rod 7 is an engaging rod 6 provided at the tip of the piston rod 6 of the drive transmission cylinder 5.
a and the groove 12b of the engaging rod 12a fixed to the tip of the piston rod 12 of the distribution cylinder 11 are detachably fitted and engaged with each other so as to interlock with each other.

Reference numeral 16 denotes a backrest 22 or leg plates 24, and respective operating cylinders for operating other operating parts (only the backrest 22 in FIG. 1), which can be rotated by a pin 15 attached to the upper bed side plate. Is supported by. The operating cylinder 16 has compartments 16a and 16b, each compartment being divided by a piston rod 17, and the piston rod 17 is provided so as to reciprocate in the left-right direction.

The partition 11a, partition 16a and partition 1 of the distribution cylinder 11 and the respective operating cylinders 16 described above.
1b and the section 16b are connected by flexible hydraulic hoses 13 and 14, respectively, so that pressure oil can flow in and out. Furthermore, the operating cylinder 16 described above
A bracket 18 is fixed to a tip end portion of a piston rod 17 of the, a link 20 is rotatably supported by a pin 19, and the other end of the link 20 is fixed to a pin 21 fixed to a backrest 22. It is connected.

With the above configuration, when the backrest 22 is laid down, when pressure oil is fed by a motor pump (not shown) to the compartment 5a of the drive transmission cylinder 5 provided in the base drive section, the pressure in the compartment 5a is reduced. Becomes higher, the piston rod 6 is moved to the right, the engaging rod 6a at the tip of the piston rod 6 moves to the right, and the connecting rod 7 engaged with the engaging rod 6a interlocks to the right. And the distribution cylinder 11
The engagement rod fixed to the tip end portion of the piston rod 12 is interlocked in the right direction, and the piston rod 12 is also interlocked in the right direction at the same time.

As a result, when the piston rod 12 of the distributing cylinder 11 moves to the right, the pressure oil in the compartment 11b passes through the hydraulic hose 14 and the operating cylinder 1
6 into the compartment 16b, and when the pressure in the compartment 16b increases, the piston rod 1 of the operating cylinder 16
7 moves to the left.

Therefore, when the piston rod 17 of the actuating cylinder 16 moves leftward, the link 20 rotatably attached to the bracket 18 attached to the tip of the piston rod 17 is pulled leftward. Then, the base pin 21 provided on the base of the backrest 22 is rotated,
The backrest 22 is put to sleep.

On the other hand, when the backrest 22 is raised with the backrest 22 lying down, the compartment 5b of the drive transmission cylinder 5
When pressure oil is sent to the piston by a motor pump, the engaging rod 6a of the piston rod 6 moves leftward, the connecting rod 7 moves leftward, and the engaging rod 12a of the piston rod 12 of the distributing cylinder 11 moves. Similarly, move it to the left.
At this time, the pressure oil flows from the compartment 11a of the distributing cylinder 11 through the hydraulic hose 13 into the compartment 16a of the actuating cylinder 16, moving the piston rod 17 of the actuating cylinder 16 to the right, and at the same time. When the link 20 attached to the tip end portion of the piston rod 17 is pushed rightward, the backrest 22 rotates in the direction opposite to the clockwise direction, and the backrest 22 occurs. At this time, the pressure oil in the section 16b of the operating cylinder 16 flows into the section 11b of the distributing cylinder 11 through the hydraulic hose 14.

In the above embodiment, the hydraulic actuator having only the backrest 22 has been described. However, by branching the pressure oil from the distribution cylinder 11 by a branch valve and solenoid valves, a plurality of backrests as well as a plurality of backrests are provided. By arranging the operating cylinders, the operation of each part can be applied.

FIG. 5 is a hydraulic block circuit diagram for operating a plurality of operating cylinders for tilting the other leg plate of the backrest. Here, regarding the hydraulic circuit for waking up only the backrest 22, first, the hydraulic path when the backrest 22 is laid down will be described. When the solenoid valves 28 and 29 are opened and the solenoid valve 30 is closed. When the motor pump 27 is driven, the pressure oil flows into the partition surface 5a of the drive transmission cylinder 5, moves the piston rod 6 to the right, and moves the piston rod 12 of the distribution cylinder 11 operated by the connecting rod 7. Move it to the right,
The pressure oil in the compartment 11b of the distribution cylinder 11 flows into the compartment 16a of the working cylinder 16 through the oil passage. At this time, the solenoid valve 31 is opened, the solenoid valve 32 is closed, and the solenoid valve 3
3 is open.

Therefore, the section 16 of the operating cylinder 16
The piston rod 17 is actuated to the right by the pressure oil that has flowed into a, causing the backrest 22 to lie down. Conversely, when raising the backrest 22, when the motor pump 27 is operated with the solenoid valves 29 and 30 open and the solenoid valve 28 closed, the pressure oil flows into the compartment 5d of the drive transmission cylinder 5. , The piston rod 6 moves to the left, and the piston rod 12 of the distribution cylinder 11 also moves to the left. At this time, in the path to the actuating cylinder 16, the solenoid valves 31 and 32 are opened and the solenoid valve 33 is closed, and the circulating pressure causes the piston rod 17 to move to the right depending on the cross-sectional area of the compartments 16a and 16b. To move.

Although not described in the embodiment disclosed in FIG. 1, when a plurality of actuating cylinders are used, for example, when the actuating cylinders 26 are added, consideration is given to ensuring leakage of internal leak. However, the distribution cylinder 11 may be provided with an oil tank 35 for use. Further, when stopping at an appropriate position, although not disclosed in the drawing, it may be stopped by a limit switch or the like. Furthermore, in the hydraulic circuit, when the backrest 22 is laid down, the circuit can be changed to a circuit utilizing the load of the subject. Also, by using a cylinder with a small cross-sectional area, the upper bed part can be made compact, and because it is mechanically fitted, there is no risk of oil leakage, and the upper bed side can be separated and moved easily with a stretcher etc. You can also do it.

As described above, since the structure is simple and the upper bed side can be easily attached / detached, the upper bed having a different shape can be accommodated, and the backrest, leg plate and other parts can be easily hydraulically operated. It will be able to operate.

[0024]

As described above, according to the present invention, since the operation of the operation cylinder is operated by the drive transmission cylinder provided on the base, a complicated structure such as a gear and a screw,
Moreover, since a large-capacity reducer is not required and a large-scale electrical connection is not required, the structure is extremely simple, the drive sources can be unified, and the cost can be reduced.

Further, since the drive transmission cylinder and the distribution cylinder for sending pressure oil to the respective operation cylinders can be easily attached and detached, it is possible to cope with any shape of the upper bed which is hydraulically operated. It is like this. Further, as described above, since the device of the present invention is a hydraulic cylinder that is hydraulically operated and driven by a small-capacity motor pump, noise during treatment is also reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of an entire hydraulic actuator incorporated in an operating table.

FIG. 2 is an enlarged vertical sectional side view of a hydraulic operating unit.

FIG. 3 is an enlarged vertical side view of a connecting rod.

FIG. 4 is an enlarged vertical front view of a connecting rod.

FIG. 5 is a block circuit diagram related to hydraulic operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Substrate 3, 8 Fixing plate 4 Mounting plate 5 Drive transmission cylinder 6, 12, 17 Piston rod 6a, 6b, 11a, 11b, 12a, 12b Partition 7 Connecting rod 9, 25 Side plate 10 Fitting pin 11 Distribution Cylinder 13, 14 Hydraulic hose 15, 19 Rotating shaft pin 16, 26 Actuating cylinder 20 Link 21 pin 22 Backrest 23 Seat 24 Leg plate 27 Motor pump 28, 29, 30, 31, 32, 33 Solenoid valve 34, 35 Oil tank

Claims (1)

[Claims] 1. A drive transmission cylinder is provided on the base side,
The engagement rod at the ram tip of the drive transmission cylinder and a distribution cylinder that is provided on the upper bed side and is configured to flow pressure oil into and out of the operating cylinder for operating the backrest, control plate, etc. An operating table characterized in that the engaging rod provided at the tip of the ram is detachably connected by a connecting rod, and the base and the upper bed side are separable.
Hydraulic actuating device for treatment table etc.