JPS6333839Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to connect the injection port of the object and the fluid supply when evacuation of an object such as a hydraulic device or a pressure vessel, or when filling the object with oil or other fluid after evacuation. The present invention relates to a connecting device that automatically connects a connecting member attached to a device.

Generally, in order to fill an object such as a hydraulic device, a pressure vessel, or a refrigeration machine with a fluid such as oil or liquefied gas refrigerant, an injection port attached to the object,
The device is connected to a connecting member attached to a conduit provided in a fluid supply device, and then the fluid is forced into the object from the fluid supply device to fill the object. The connecting device that connects the inlet and the connecting member in this way is usually called a coupler.
When a plug provided with a substantially U-shaped groove is inserted into a socket, the connecting ball engages in the U-shaped groove and is connected.

However, this type of coupler cannot be used for those with a special shape of injection port.
It was necessary to specially construct a connecting member adapted to the inlet. Particularly, in the case where the inlet is provided with a flange, it is necessary to eliminate leakage when the coupling device is engaged, and a coupling device adapted to this is required.

This invention was made in view of the above points,
A plurality of clamp members rotatably attached to a main body including a drive device are provided, and these clamp members are urged by an elastic body to rotate in a direction to grip an injection port attached to an object, and the drive device a coupling member is fixed to the output shaft of the coupling member, an engagement portion is provided on the coupling member, an engagement protrusion to which the engagement portion abuts is provided on each of the clamp members, and the coupling member is fixed to the output shaft of the inlet. When the coupling member is moved in the injection port direction, the engagement portion and the engagement protrusion come into contact with each other to rotate each of the clamp members in the opening direction, and when the coupling member is moved in the injection port direction, It is an object of the present invention to provide a connecting device in which each clamp member is locked and connected to a flange of an inlet, and the inlet and the coupling member are easily and automatically connected. .

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figure 1 is a cross section showing the device of the present invention;
The figure is a sectional view taken along the - line in FIG. 1, and FIGS. 3A and 3B are perspective views showing the injection port.

In these figures, reference numeral 1 denotes a connecting member of a connecting device, and this connecting member 1 has a predetermined number of projecting pieces 4, 4, . , 4, . . . are rotatably attached to the clamp members 5, 5, . . . , and the clamp members 5, 5, . It is urged by the elasticity of elastic bodies such as springs 8, 8, . . . to rotate in the direction. Each of the clamp members 5, 5, . . . is provided with an engaging protrusion 9, 9, .
The plate 12 of this coupling member 11 has an engaging portion 13.
is provided. The engaging portion 13 is connected to the output shaft 1
0 moves in the direction of arrow C, the engaging protrusions 9, 9
... to rotate the clamp members 5, 5, ... in the direction of arrow B in the figure against the urging force of elastic bodies such as springs 8, 8, .... In the case of the embodiment, the engaging portion 13 is formed by cutting a corner portion of the plate 12 over the entire circumference at a predetermined angle as shown in the figure. A packing 14 is disposed on the plate 12 as shown in the figure on the surface that contacts the injection port 7 to prevent fluid from leaking when the coupling member 11 contacts the injection port 7. The plate 12 is further fixed with an insertion tip 15 having a diameter slightly smaller than the inner circumference of the injection port 7 on the surface that comes into contact with the injection port 7.
5 is a tapered surface 15 that becomes smaller in diameter toward its tip.
A is provided to facilitate insertion into the injection port 7.

Furthermore, the insertion tip 15, the plate 12, and the output shaft 10 are provided with a communication hole 16 through which fluid flows.

A clamp claw 5A is formed at the tip of the clamp member 5, and is adapted to engage the flange portion 7A of the injection port 7 during connection.

Thus, the drive device 2 includes a piston 18 provided in the cylinder 17 so as to be able to reciprocate, and
A driving source such as air or oil can be supplied from both ends 17A and 17B. In this embodiment, air pressure is used, and the both ends 17A, 1
7B, air supply holes 19A and 19B are provided, respectively.

When compressed air is supplied from air supply hole 19A, piston 18 moves in the direction of arrow D as shown in the figure, but when air is supplied from air supply hole 19B, piston 18 moves in the direction of arrow C and comes into contact with end 17A and stops. This piston 18 is constructed integrally with output shaft 10, and the reciprocating motion of piston 18 moving in the directions C and D as described above is output via output shaft 10.

Further, an O-ring 20 is provided at the joint between the cylinder 17 and both ends 17A, 17B, at the sliding surface between both ends 17A, 17B and the output shaft 10, and at the piston 18.
are arranged respectively.

Further, reference numeral 21 denotes a guide, which is used as a guide to connect the notches when a part of the flange portion 7A of the inlet 7 has notches as shown in FIG. 3A. In the case of such an injection port 7 having a flange portion without a notch (see FIG. 3B), three or four or more clamp members 7 may be provided in place of the guide.

The operation of the connecting member 1 configured as described above will be explained below.

First, air is supplied from the air supply hole 19B to move the piston 18 in the direction of arrow C in the figure.

At this time, the coupling member 11 moves in the direction of arrow C, and the engagement portion 13 of the plate 12 engages the clamp member 5.
The clamp member 5 is rotated in the direction of arrow B by pressing the engaging protrusion 9 of the clamp member 5 to open the clamp member 5.

In this state, the connecting member 1 is joined to the injection port 7. Then, when air is supplied from the air supply hole 19A and the piston 18 is moved in the direction D in the figure, the engaging portion 13 on the plate 12 of the coupling member 11 fixedly installed on the output shaft 10 and the engaging protrusion of the clamp member 5 When the clamp member 5 is disengaged from the piece 9, the clamp member 5 rotates in the direction of gripping the inlet 7, that is, in the direction of arrow A in the figure, by the elasticity of the elastic body such as the spring 8. Then, the clamp claw 5A of the clamp member 5 and the flange portion 7A of the injection port 7 are locked, and the coupling member 11
Since the end of the injection port 7 is pressed through the packing 14 by the pressing force of the piston 18 in the direction of the arrow D, it is firmly fixed and connected. Therefore, once they are connected, they will not come off, and since they are sealed with the gasket 14, even when drawing a vacuum or pressurizing fluid,
There are no leaks.

After the evacuation or filling of fluid is completed, air is supplied from the air supply hole 19B and the piston 18
is moved in the direction of arrow C in the figure, the engaging portion 13 of the coupling member 11 is brought into contact with the engaging protrusion 9 of the clamp member 5, and the clamp member 5 is rotated in the direction of arrow B to open it. All that is required is to remove the connecting member 1 from the injection port 7.

Since the present invention is constructed as described above, the connection work is facilitated, and the connection is automatically performed.
Moreover, it has the effect of making a firm and fixed connection.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a connecting member according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIGS. 3A and 3B are perspective views showing an injection port. DESCRIPTION OF SYMBOLS 1... Connection member, 2... Drive device, 3... Main body, 5... Clamp member, 6... Object, 7... Inlet, 8... Elastic body, 9... Engaging protrusion, 10... …
Output shaft, 11... Connection member, 13... Engagement part, 1
6...Communication hole.

Claims (1)

[Claims for Utility Model Registration] A cylinder in which a passage for fluid such as liquid or air is formed in the piston shaft, and air holes communicating with the outside are formed in each piston chamber partitioned by the piston part; a clamp member provided at one end of a cylinder so as to be rotatable with respect to the cylinder, and urged by a biasing member to rotate in a direction to grip the opening of the fluid supply injection container; a member that fits into the opening of the fluid supply injection container, has a hole that is connected to the piston shaft, projects from one end side of the cylinder, and communicates the fluid passage with the container opening; a coupling member that is housed inside the clamp member and opens the clamp member in response to the operation of a cylinder using the air hole; a coupling member that is provided on the clamp member and opens the clamp member when the coupling member moves upward; A coupling device comprising: an engagement protrusion that engages with an engagement member for moving in an opening direction.