JP2761248B2 - E-type snap ring fitting remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention easily fits an E-shaped retaining ring into an annular concave groove provided around a shaft, and easily fits the fitted E-shaped retaining ring. The present invention relates to an E-type snap ring fitting / removing device which can be detached from a vehicle.

[Conventional technology]

When the E-type retaining ring is fitted to the shaft, the opening is pressed from the outer peripheral direction of the shaft to an annular groove formed around the shaft, the inner diameter is elastically enlarged, the inner diameter is elastically fitted to the shaft, and the shaft is fitted to the shaft. When removing the E-shaped retaining ring, the tip of a tool such as pliers is applied to both sides of the opening of the E-shaped retaining ring and the tip is widened and removed. However, the diameter of the shaft is often relatively small. The small E-shaped retaining ring is difficult to grasp and press with fingers, it is difficult to open the opening with the tip of a tool such as pliers, etc. When inserting or removing the E-shaped retaining ring, all the nerves must be concentrated on the fingertip It was a difficult task to do.

For this reason, there has been a demand for a convenient device that can easily fit and remove the E-shaped retaining ring.

[Problems to be solved by the invention]

However, since the E-shaped retaining ring is used as a positioning or detent of the component inserted into the shaft, the annular concave groove is close to the end face of the fitted component, and the E-shaped retaining ring is extremely narrow in space. Since the retaining ring is attached and removed, it is difficult to use a large-volume instrument. In addition, the E-type retaining ring that hits the shaft when the instrument is brought near the annular groove with the E-type retaining ring sandwiched during installation There was a problem of falling from the tip.

An object of the present invention is to solve such a problem.

[Means for solving the problem]

In order to achieve the above object, the E-type snap ring insertion / removal device of the present invention is provided with a support pillar standing on a bottom wall of each of the storage recesses of a main body having storage recesses opened on both ends and end faces and side surfaces, Nipping, which has an elongate hole to be loosely fitted to the support, is slidably inserted into one of the receiving recesses of the main body, and holds the outer peripheral surface of the E-shaped retaining ring to the fitting slide base urged in the end face direction. An E-shaped snap ring is provided on an end surface of the removal slide base which has a projection, has a long hole loosely fitted to the support, is slidably inserted into the other accommodation recess of the main body, and is urged in the end surface direction. A push-moving portion capable of pushing both ends of the opening is formed, and one end of a cover attached to the main body and covering the two housing recesses can abut on an opposite side of the opening of the E-shaped retaining ring. An abutment portion was provided to constitute an E-shaped retaining ring insertion / removal device.

(Operation)

The operation of the E-type snap ring fitting / removing device configured as described above is as follows.

(Fit) When the E-shaped retaining ring is fitted between the two holding projections of the fitting slide base and the abutting portion of the cover, the E-shaped retaining ring is positioned on the fitting slide base.

Next, when the outer peripheral surface of the shaft is moved by lightly applying the distal end of the main body on the side of the slide base for fitting to the shaft, the contact pressure on the outer peripheral surface is almost applied to the distal end of the slide base for fitting.
The E-shaped retaining ring does not fall off merely by lightly touching the shaft, and the position of the E-shaped retaining ring is fitted into the annular groove when it reaches the annular groove.

Next, when the main body is pressed against the shaft, the main body and the E-shaped retaining ring move forward with only the fitting slide base contacting the outer peripheral surface of the shaft, and the E-shaped retaining ring is fitted into the annular groove.

(Removal) When the pushing portion at the tip of the removal slide base is pressed against both ends of the opening side of the E-shaped retaining ring fitted on the shaft,
The inner diameter of the die retaining ring expands, and the E-type retaining ring separates from the shaft.

Embodiment An embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a front view of an E-type snap ring fitting remover A, FIG. 3 is a partially cutaway side view thereof, and FIG.
FIG. 4 is a front view of the die retaining ring fitting / removing device A, and FIG. 4 is a perspective view of components constituting the E type retaining ring fitting / removing device A.

As shown in FIG. 4, the main body 1 has housing recesses 2 and 3 that are open at both end portions on the end surface and the side surface (the upper surface in FIG. 4).
And the accommodation recesses 2 and 3 each have a columnar support 4
And 5 are erected, and screw holes 4a and
5a is screwed.

Concave portions 6 and 7 for avoiding interference with a shaft on which an E-shaped retaining ring is mounted are provided on end surfaces 2a and 3a of the end surfaces 2a and 3 of the housing concave portion 2.
Are formed, and spring receiving grooves 8 and 9 are provided on the opposite sides of the end face 2a and the end face 3a, respectively.

A fitting slide base 11 having an elongated hole 10 to be loosely fitted to the support column 4 is slidably inserted into the accommodation recess 2, and is accommodated in a spring accommodation groove 8 in a spring support rod 12 protruding from the engagement slide base 11. One side of the spring 13 is locked, and the fitting slide base 11 is urged toward the end 2a side of the accommodation recess 2.

The end of the fitting slide base 11 has a semicircular concave portion 14 that comes into contact with a shaft on which the E-shaped retaining ring is fitted, and a slit 15 is engraved in the concave portion 14, and a slit 15 is formed on one side of the slit 15. A screw hole 16 that intersects at right angles with 15 is provided, and a slit
A hole 17 coaxial with the screw hole 16 is provided in the other of the holes 15, and the width of the slide base 11 for fitting is adjusted by a screw 18 inserted into the hole 17 and screwed into the screw hole 16.

At both ends in the width direction of the slide base 11 for fitting, E
A holding projection 19 for holding the mold retaining ring is provided.
The inner wall surface has a tapered surface that expands toward the end surface
19a is provided.

A detachable slide base 21 having an elongated hole 20 that fits loosely into the support column 5 is slidably inserted into the accommodating recess 3, and is accommodated in a spring accommodating groove 9 by a spring support rod 22 protruding from the detachable slide base 21. One side of the spring 23 is locked, and the removal slide base 21 is urged toward the end 3a of the housing recess 3.

At the end of the removal slide base 21, a semicircular recess 24 is formed which is in contact with the shaft on which the E-shaped retaining ring is fitted,
The slide base end faces on both sides of the concave portion 24 serve as pushing portions 21a for pushing both ends of the opening of the E-shaped retaining ring.

The plate-shaped cover 25 is provided at one end with a contact portion 26 which has the same system as the driven surface on the opposite side of the opening of the E-shaped retaining ring and which can contact the pressed surface. The other end is provided with a concave portion 27 for avoiding interference with a shaft on which the E-shaped retaining ring is fitted.

The cover 25 is provided with two holes 28, screws 29 respectively inserted into the two holes 28 are screwed into the screw holes 4a and 5a, and the cover 25 is fastened to the main body.

A gripping cap 30 is provided on one of the two ends of the E-type retaining ring fitting / removing device A configured as described above so that the E-type retaining ring fitting / removing device A can be easily grasped.
Is covered.

The gripping cap 30 has a housing recess 31 that opens at an end, and a slit 32 on the end side of the housing recess 31 is provided.

Next, the operation of the E-type snap ring fitting / removing device A will be described.

(E-Retaining Ring Fitting) As shown in FIG. 2, the E-type retaining ring B is fitted on the surface of the slide base 11, clamped by the clamping projection 19, and opposite to the opening 33 of the E-shaped retaining ring B. Abuts the driven surface 34 of the contact member.

The distance between the two holding projections 19 is adjusted by the screw 18 so that the E-shaped retaining ring B is lightly held.

In order to fit the E-shaped retaining ring B into the annular groove 35 provided around the shaft S, first, as shown in FIG. When moving toward the annular groove 35 while keeping the shaft S in contact with the axis S, the opening 33
When the concave portion 14 of the fitting slide base 11 slides into contact with the outer peripheral surface of the shaft S, and the E-shaped retaining ring B overlaps the annular concave groove 35, the E-shaped retaining ring B enters the annular concave groove 35 (see FIG. (See Fig. 5 (b)).

Therefore, the fitting position of the E-shaped retaining ring B can be easily determined.

Next, when the fitting remover A of the E-shaped retaining ring is lightly pressed against the shaft S, only the fitting slide base 11 abutting on the shaft S relatively retreats against the spring 13 and comes into contact with the spring S. The E-shaped retaining ring B pressed by the portion 26 is fitted into the annular groove 35 as it is (see FIG. 5C).

(Removal of E-shaped retaining ring) As shown in FIG. 6A, both ends of the opening 33 of the E-shaped retaining ring B fitted into the annular groove 35 of the shaft S are removed. When pressed by the pressing portion 21a, the inner diameter of the E-shaped retaining ring B expands and comes off the shaft S (see FIG. 6 (b)).

[Effect of the Invention] Since the present invention is configured as described above,
The following effects are obtained.

(1) The E-type retaining ring insertion / removal device of the present invention has advantages that its structure is simple, light and small, easy to grasp, and easy to insert / remove the E-type retaining ring in a narrow space. .

(2) When the E-type retaining ring is fitted, the E-type retaining ring is hardly pressed when the E-type retaining ring is fitted and removed with the outer peripheral surface of the shaft. There is an advantage that the E-shaped retaining ring does not fall off even when the fitting remover is moved along the outer peripheral surface of the shaft, and the E-shaped retaining ring is easily aligned with the annular groove.

(3) The flag for fitting and removing the E-shaped retaining ring of the present invention is convenient because it can be used for both fitting work and removal work since the fitter and the remover are integrated.

In addition, since both the fitting operation and the removing operation need only be a simple operation of pressing the fitting-removing device of the E-shaped retaining ring against the shaft, the previously difficult operation has become extremely easy.

[Brief description of the drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a front view of an E-shaped retaining ring with a cover removed, and FIG. 2 is a front view of an E-shaped retaining ring with a removed. Fig. 3, Fig. 3 is a partially cutaway side view of Fig. 2, Fig. 4 is a perspective view of components of an E-shaped retaining ring, and Fig. 5 (A) to Fig. FIGS. 6 (a) and 6 (b) are explanatory views of the removal process. A: E-type retaining ring insertion / removal device, B: E-type retaining ring, S: axis, 1 ... body, 2,3 ... accommodation recess, 2a, 3a ...
… End face, 4,5… Post, 6,7 …… Recess, 8,9… Spring accommodation groove, 11… Slide base for fitting, 13… Spring, 14
... recess, 15 ... slit, 19 ... clamping projection, 21 ... removal slide base, 21a ... pushing part, 23 ... spring, 2
4 ... recess, 25 ... cover, 26 ... abutment, 27 ... recess, 29 ... screw, 30 ... gripping cap, 33 ... opening, 34 ... pressed part, 35 ... ... circular recess.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-54-57300 (JP, A) JP-A-53-148800 (JP, A) JP-A-53-64900 (JP, A) JP-A-54-57900 81600 (JP, A) Japanese Utility Model Showa 52-31100 (JP, U) Japanese Utility Model Showa 59-86977 (JP, U) Japanese Utility Model Showa 59-42827 (JP, U) Japanese Patent Publication No. 36-2649 (JP, B1) (58) Field surveyed (Int. Cl. ⁶ , DB name) F16B 21/18 B25B 27/20

Claims (1)

(57) [Claims] 1. A main body having receiving recesses opened at both ends and an end face and side surfaces, wherein a support is erected on a bottom wall of each of the storage recesses, and has a long hole which is loosely fitted to the support. The fitting slide base slidably inserted into the housing recess and urged in the end surface direction is provided with a holding projection for holding the outer peripheral surface of the E-shaped retaining ring, and has a long hole for loosely fitting to the support post. Forming a pushing portion capable of pushing both ends of the opening portion of the E-shaped retaining ring on an end surface of the removing slide base slidably inserted into the other accommodation concave portion of the main body and urged in the end surface direction; An E-shaped retaining ring, characterized in that an abutting portion is provided at one end of a cover attached to the main body and covering the two housing recesses, the abutting portion being capable of abutting on an opposite side of an opening of the E-shaped retaining ring. Fitting remover.