JPH11216683A - Tool for e-shaped washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach/detach an E-shaped washer by providing operation parts on a tip side which are deviated from each other in the direction orthogonal to the rotational direction, and providing a groove to be opened on the other side on one deviated part of the operation parts. SOLUTION: A holding part 11c is operated to open operation parts 11b, an intermediate part of an E-shaped washer 1 is inserted in a groove 11d and held, and a shaft 2 is located between the opened operation parts 11b. Each end of the E-shaped washer 1 is abutted on a groove 2a for fitting the E-shaped washer 1 provided in the shaft 2, and the holding part 11c is operated to close the operation parts 11b. The respective operation parts 11b are deviated from each other so as to allow the thickness of the E-shaped washer 1 inserted in the groove 11d, and the other operation part 11b is detached from the groove 2a in a condition where each end of the E-shaped washer 1 is abutted on the groove 2a of the shaft 2. Thus, the E-shaped washer 1 is easily pressed into the groove 2a without troubles, and fitted to the shaft 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dedicated tool for attaching and detaching an E-shaped retaining ring.

[0002]

2. Description of the Related Art Conventionally, when a ball bearing or the like is mounted on a shaft of a mechanical device, the mounted ball bearing or the like is stopped so as not to move in the axial direction, or is mounted on the shaft end so as not to drop off from the shaft end. As one method of fixing,
An E-shaped retaining ring is mounted on the shaft. In order to mount the E-shaped retaining ring, a groove is provided around the circumference of the shaft, and an E-shaped retaining ring having an opening dimension smaller than the diameter of the groove bottom is used.

[0003] The E-shaped retaining ring is made of spring steel and has strong flexibility. Therefore, the opening is pressed into the groove of the shaft having a diameter larger than the opening dimension, so that the shaft is pressed into the groove. After the attachment, it fits into the groove at three points of the E-shape due to its flexibility, and does not come off unless an extreme external force is applied.

When such an E-shaped retaining ring is mounted on a shaft, an intermediate portion of the E-shaped retaining ring is gripped by a plier or the like and pushed into a groove. Also, when removing the attached E-type retaining ring,
A sharp pointed tool is inserted into the gap between the E-shaped retaining ring and the groove, and removed by prying.

[0005]

The above-mentioned conventional mounting and dismounting of the E-shaped retaining ring has the following problems due to the above-described operation. That is, E
The work of attaching or detaching the die retaining ring is performed by appropriately using an existing tool. Therefore, it is performed with relatively strong force. Further, a tool for performing the work is arbitrarily selected, and the work efficiency greatly differs depending on the worker. Furthermore, in the case of repeatedly producing or removing the E-type retaining ring in a machine device which is mass-produced, the work efficiency greatly differs depending on the operator and the tool used, which is a factor that hinders productivity. They are one.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an E-type retaining ring which can minimize the individual differences of workers and can easily work with a small force. And a dedicated tool for removal.

[0007]

Means for Solving the Problems To achieve the above object, a tool for an E-shaped snap ring according to the present invention is constituted as follows. That is, two rod-shaped members provided with a rotation fulcrum at the intermediate portion and supported so as to be rotatable with each other are configured in a pliers shape, and the operation units on the distal end side are configured to be mutually shifted in a direction orthogonal to the rotation direction. In addition, a groove that opens to the other side is provided in one of the shifted portions of the operation unit.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the tool for a die retaining ring will be described in detail. FIG. 1 is a front view of a tool for an E-shaped retaining ring according to the present invention, and FIG. 2 is a view A of FIG.
FIG. 1 is a sectional view showing a state in which an E-shaped retaining ring is removed.
3A is a cross-sectional view taken along line A-A, in which FIG. 3A is a plan view showing an attached state of an E-shaped retaining ring, and FIG.

In FIG. 1, reference numeral 11 denotes a tool for an E-shaped snap ring, which is provided with a rotary support 11a at an intermediate portion between two rod-shaped members, and has a plier shape supported so as to be rotatable relative to each other. Have been. The distal end side of the rotation fulcrum 11a is the operating portion 11b of the E-side retaining ring 1, and the rear end side is the manual gripping portion 11c. Unlike the normal pliers, the operation unit 11b is configured to be shifted from each other in a direction orthogonal to the rotation direction, that is, in an axial direction perpendicular to the plane of FIG.

A groove 11d capable of holding the E-shaped retaining ring 1 is provided in one of the shifted portions of the operation portion 11b.
Are provided on the inside, that is, on the other side of the operation unit 11b.

When the E-shaped retaining ring 1 is mounted on the shaft 2 using the E-shaped retaining ring tool 11 configured as described above, the following operation is performed. As shown in FIGS. 1 and 2, first, the operating portion 11b is opened by operating the grip portion 11c, and the groove 1 is opened.
Insert the intermediate portion of the E-shaped retaining ring 1 into 1d and hold it. Next, the shaft 2 is positioned between the opened operation units 11b. Next, the E-shaped retaining ring 1 provided on the shaft 2 is inserted into the groove 2a for mounting.
The both ends of the die retaining ring 1 are applied, and the operating portion 11b is closed by operating the grip portion 11c.

The operating portions 11b are shifted from each other so that the thickness of the E-shaped retaining ring 1 in the state of being inserted into the groove 11d can be crossed. 2a, the other operating portion 11b is in the groove 2
a. Therefore, the E-type retaining ring 1 has no trouble,
And it is easily pushed into the groove 2 a and attached to the shaft 2.

When the E-shaped retaining ring 1 attached to the shaft 2 is removed, the following operation is performed. In FIG.
With respect to the E-shaped retaining ring 1 attached to the shaft 2, first, the grip portion 11c is operated to open the operating portion 11b, and the shaft 2 is positioned between the operating portions 11b. Next, the inside of the other operation portion 11b having no groove 11d is applied to both ends of the E-shaped retaining ring 1. Next, the grip 11c is operated to operate the operation unit 11b.
Close.

The operating portions 11b are shifted from each other so that the thickness of the E-shaped retaining ring 1 can be changed.
The one operating portion 11b is detached from the E-shaped retaining ring 1 in a state where the other operating portion 11b is applied to both ends of. Accordingly, the E-shaped retaining ring 1 is easily and easily pushed out of the groove 2 a and removed from the shaft 2. In addition, with respect to the mounting state shown in FIG. 2, the E-type snap ring tool 11 of FIG.
The removal state of the E-type snap ring tool 11 shown in FIG.

[0015]

The E-type snap ring tool according to the present invention has the following effects by being configured as described above. That is, by using a tool similar to a plier or the like conventionally used in various operations, the operation of attaching and detaching the E-type retaining ring can be easily performed with a small force without performing an unreasonable operation. Further, by using a special tool for attaching and detaching the E-shaped retaining ring, individual differences among workers are reduced. Therefore, work efficiency is stabilized, and productivity is improved and improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a tool for an E-type snap ring according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing a state in which an E-type retaining ring is attached by the E-type retaining ring tool of the present invention.

FIG. 3 is a sectional view taken along the line AA of FIG. 1 showing a state in which the E-type retaining ring is removed by the E-type retaining ring tool of the present invention.

FIG. 4 is a plan view showing a state where an E-shaped retaining ring is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 E-type retaining ring 2 axis 11 E-type retaining ring tool 11b Operating part 11c Gripping part 11d Groove

Claims (1)

[Claims] 1. A rotary support (11a) is provided at an intermediate portion, and two rod-shaped members rotatably supported to each other are formed in a pliers shape, and each operation portion (11b) on the tip side is orthogonal to the rotation direction. The operation portion (11b) has a groove that opens to the other side.
(11d) A tool for an E-type retaining ring, characterized by being provided with (11d).