JPH0158033B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grip-type retaining ring insertion device,
The purpose of this is to ensure positioning when inserting a grip-type retaining ring into an object to be inserted, and to facilitate the insertion work.

FIGS. 1 and 2 show a conventional grip-type retaining ring insertion device. The grip-type retaining ring 1 is held on the lower end surface of the insertion device main body 4, and by rotating a wedge 2 rotatably provided on the fulcrum 3 of the device main body 4, the lower end of the grip-type retaining ring 1 is inserted into the opening of the grip-type retaining ring 1. The inner diameter of the grip-type retaining ring 1 is expanded by inserting it into the object, and after expansion, the main body 4 of the device is lowered, the retaining ring 1 is inserted into the object 5, the wedge 2 is returned to its original position, and the main body of the device is expanded. 4 is moved upward to attach the retaining ring 1 to the object to be inserted 5. However, in this conventional device, when the grip-type retaining ring 1 is inserted into the inserted object 5, the wedge 2 and the main body 4 come to cover the inserted object 5, making alignment difficult and causing insertion errors. The insertion work had to be done carefully.

The present invention is intended to eliminate such conventional drawbacks, and one embodiment thereof will be described below with reference to FIGS. 3 and 4.
This will be explained with figures.

In FIGS. 3 and 4, the same components as those of the conventional device shown in FIGS. A guide shaft 6 is provided to be movable up and down, and the guide shaft 6 is biased downward by a spring 7 provided in the device main body 4, and the biasing movement is caused by the movement of the collar 6a at the upper end of the guide shaft 6 into the device main body. It is stopped by being locked to the edge of the hole 4b of No. 4.

By providing the guide shaft 6 on the device main body 4 in this way, the grip-type retaining ring 1 is held in the holding portion 4a provided on the lower end surface of the device main body 4, and the retaining ring 1 is expanded by the wedge 2. the tip of the guide shaft 6 is inserted into the positioning hole 8 formed on the upper surface of the object to be inserted 5, and with the retaining ring 1 fitted to the object to be inserted 5, the wedge 2 is rotated back. When the device main body 4 is moved back, the retaining ring 1 is attached to the inserted object 5 as shown in FIG.

Here, since the guide shaft 6 is inserted into the positioning hole 8 of the object 5 before the retaining ring 1 is fitted into the object 5, the position of the retaining ring 1 and the object 5 is are matched in advance, so there is no possibility of insertion errors and the insertion operation can be performed extremely easily.

Since the guide shaft 6 is movable against the spring 7, there is no problem even if the depth of the positioning hole 8 of the inserted object 5 is shallower than the protruding length of the guide shaft 6; By tapering the tip of the shaft 6, alignment is possible even if the diameter of the positioning hole 8 is small.

As described above, according to the present invention, alignment with the object to be inserted can be performed accurately and easily using the guide shaft, thereby eliminating insertion errors and improving work efficiency, which has great effects.

[Brief explanation of drawings]

FIG. 1 is a sectional side view showing a conventional device, FIG. 2 is a bottom view thereof, FIG. 3 is a sectional side view showing an embodiment of the present invention, and FIG. 4 is a perspective view of the device in an inserted state. DESCRIPTION OF SYMBOLS 1...Grip type retaining ring, 2...Wedge, 4...Device main body, 4a...Holding part, 5...Inserted part, 6...
...Guide shaft, 7...Spring, 8...Positioning hole.

Claims (1)

[Claims] 1. A device body having a holding portion for holding a grip-type retaining ring on the upper end surface, and a device body provided on the device body,
The main body of the device has an expansion mechanism for expanding the grip-type retaining ring held in the holding portion, and a tapered portion at its tip that can be inserted into a positioning hole provided in the object to which the grip-type retaining ring is attached. a guide shaft that protrudes into the holding portion so as to be able to move up and down in the axial direction; and a spring that is provided within the device main body and urges the guide shaft to protrude into the holding portion;
Insert the tapered part at the tip of the guide shaft into the positioning hole for the object to be inserted, and with the grip-type retaining ring held in the holding part of the device body expanded by the expansion mechanism, lift the device body upward. An insertion device for a grip-type retaining ring, characterized in that the grip-type retaining ring is inserted into the object to be inserted by lowering the grip-type retaining ring.