JPS5911011Y2 - Operating table hydraulic actuator - Google Patents

Description

[Detailed description of the invention] The present invention consists of a set of hydraulically operated vertical rotation cylinders arranged symmetrically between the lower swing base arm of the vertical rotation operating table and the upper table base arm, and a set of By attaching a cylinder body that is integrally formed by crossing cylinders for rolling over and over, and interlocking the left and right cylinder pistons and the base arm with a piston rod, it is possible to process and assemble parts of the vertical and horizontal rolling mechanism of an operating table. This is an attempt to simplify the process.

To explain the present invention with the help of drawings, Figure 1 is a front view of a hydraulic actuator for vertical and horizontal rotation of an operating table using a piston rod type cylinder according to the present invention, and the left half is a view taken parallel to the plane of the paper at the center of the cylinder. FIG. 2 is a side view of FIG. 1, and the left half shows a cross section like FIG. 1.

FIG. 3 is a diagram illustrating the relationship between the piston rod of the vertical rotation cylinder and the lower swing base arm of the cylinder body, and the relationship between the piston rod of the horizontal rotation cylinder and the operating table base arm.

In the figure, 1 is the operating table column side, 2 is the operating table table, and 3 is the cylinder body part of the hydraulically operated cylinder and piston that is arranged at the side head of the operating table column and turns the operating table table vertically and horizontally. , a pair of vertical rotation cylinders 4, 4 and a pair of horizontal rotation cylinders 5, 5, which are arranged symmetrically, are vertically crossed and integrally formed.

6 is the lower swinging base arm of the operating table installed on the side head of the operating table column; 7 is the table base arm attached to the underside of the operating table table; The cylinders 4, 4 and the set of rollover cylinders 5, 5 are arranged symmetrically, respectively.

Reference numeral 8 denotes a shaft attached to the lower swinging base arm 6 of the operating table, and an arm 9 protruding from the lower part of the cylinder body is attached to this shaft.
are fitted together, and the cylinder body swings the operating table in the vertical direction about this shaft 8.

Reference numeral 10 denotes an arm projecting from the upper part of the cylinder body in a direction crossing the lower arm 9, and a swing shaft 11 of the upper table base arm 7 is attached to this arm.

12 is a piston of the vertical rotation cylinder 4, and the tip of the piston rod 13 operated by this piston is connected to the lower swing shaft 8.
The piston rod is shaped so that it contacts the piston rod bearing shaft 14 attached to the lower swing base arm 6 at an upper position with an arcuate surface, and the piston side of this piston rod is also shaped so as to contact with a spherical surface. has been done.

The figure shows the relationship between the piston, piston rod, and piston rod bearing shaft on the left side, but the piston in the right cylinder is also the same as that on the left side, and the left and right piston rods are connected to the piston rod bearing shaft 14 of the lower swing base arm 6. are placed facing each other.

Reference numeral 15 denotes a piston of the horizontal rotation cylinder 5, and between this piston and a shaft 16 attached to the base arm 7 at a lower position of the swing shaft 11 of the table base arm 7, there is a piston of the vertical rotation cylinder 5 mentioned above. As in the case, a piston rod 17 for overturning is provided, and the ends of this piston rod are so shaped that they meet on one side with an arcuate surface and on the other with a spherical surface.

As described above, the operating table vertical and horizontal rotation hydraulic actuation device of the present invention has cylinders and pistons arranged symmetrically with respect to the vertical direction with respect to the lower swing base arm and the upper table base arm, and the left and right pistons and the base arm are linked and driven by a piston rod, and the structure of the piston rod is that the piston side is a spherical surface, and the side of the base arm that contacts the bearing shaft is an arcuate surface, and both sides of the piston rod have small radii. Since the sliding due to rocking is small and the amount of change is small even at maximum operation, the sliding movement of the piston is extremely stable, with almost no changes in operating speed or operating pressure.

In addition, the piston rod bearing shafts of the lower swing base arm and table base arm are thin, and the piston is separate from the piston rod and is thin, so the height of the vertical and horizontal cylinder body can be reduced. Furthermore, it has great effects such as simplifying parts processing and assembly.

In the above explanation, the hydraulic actuation device of the present invention is applied to both cylinders for vertical and horizontal rotation of an operating table, but the present invention can also be applied to a hydraulic actuation device for only either vertical or horizontal rotation. You can also do it.

[Brief explanation of drawings]

Fig. 1 is a front view in cross section of the left half of the operating table vertical/rolling hydraulic actuator using a piston rod type cylinder and piston according to the present invention; Fig. 2 is a side view;
The figure is an explanatory view of the relationship between the piston rod of the vertical rotation cylinder and the lower swing base arm of the cylinder body, and the piston rod of the horizontal rotation cylinder and the operating table base arm. 1...Operating table column side, 2...Operating table table, 3 is the cylinder body of the vertical and horizontal hydraulic actuator, 4
, 4... A set of vertical rotation cylinders, 5, 5...
...Cylinder for rolling over, 6...Lower swing base arm, 7...Table base arm, 8...
...Lower swing axis (vertical rotation axis), 9...Cylinder body lower arm, 10...Cylinder body upper arm, 11...Table base arm swing axis (transverse rotation axis), 12... piston of vertical rotation cylinder, 13... piston rod, 14...
・Piston rod receiving shaft, 15... Piston of the cylinder for rolling over, 16... Piston rod receiving shaft,
17... Piston rod.

Claims (1)

[Scope of utility model registration request] The lower protruding arm 9 of the cylinder body 3, which is integrally formed by vertically crossing a pair of vertical rotation cylinders 4, 4 and a set of horizontal rotation cylinders 5, 5 arranged symmetrically, is surgically operated. An arm 10 protruding from the upper part of the cylinder body 3, crossing the lower protruding arm 9, is attached to the operating table table base arm 7 via a shaft 8. In the hydraulic actuating device for the vertical and horizontal operating table respectively installed by 11, the left and right cylinders 4 for vertical rotation,
4 and the lower swing base arm 6, as well as the left and right cylinders 5.5 for overturning and the operating table table base arm 7, are linked and driven by piston rods 13 and 17, respectively, and are in contact with the piston side of each piston rod. A hydraulic actuation device for an operating table in which the surface is spherical and the surface that contacts the piston rod bearing shaft on the base arm side is an arcuate surface.