JP2001212772A - E-shaped retaining ring mounting device and e-shaped retaining ring storing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an E-shaped retaining ring mounting device capable of easily and reliably pressing in an E-shaped retaining ring without deforming and damaging a shaft body, the E-shaped retaining ring and the other parts. SOLUTION: The E-shaped retaining ring mounting device is provided with a retaining ring supplying means 11 for aligning and holding a plurality of E-shaped retaining rings A in the approximately same direction, a slider 14, an elastic holding means having two arched elastic claws 14c positioned on the tip of the slider and for elastically holding one of tips of the Eshaped retaining rings at the peripheral edge, a shaft body holding means 16 for holding a shaft body B in the loosely fitted state, and a driving means 15 for the slider.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for preventing a component from coming off when a rotatable component is inserted into a shaft and for fixing the shaft after inserting the shaft itself into a mounting hole of a frame or the like. The present invention relates to an E-type retaining ring mounting device for press-fitting an E-type retaining ring.

[0002]

2. Description of the Related Art Conventionally, in various machines such as precision equipment and office machines, after inserting rotatable parts such as gears and levers into a shaft made of metal or the like, E is used to prevent them from coming off. It is common practice to use die retaining rings.

[0003] This E-shaped retaining ring is stipulated in Japanese Industrial Standards, and it is generally used that after being inserted into a fitting groove provided in a shaft body, elastic deformation at the time of press-fitting is used. Is the way. The E-type retaining ring used is JIS or D
The inner diameter, outer shape, thickness, diameter and width of the fitting groove to be press-fitted are strictly determined by standards such as IN, and are completely standardized.

FIG. 13 shows a conventional dedicated tool for press-fitting an E-shaped retaining ring. In the figure, a dedicated tool 1 is composed of arms 2 and 3 which extend from a gripping portion shown and have a predetermined elasticity. A semicircular step is provided at the tip of each of the arms 2 and 3. And the step has a tip divided into two by a slot, and is held in a state where the E-shaped retaining ring A is sandwiched by utilizing the elastic deformation and the step of the arms 2 and 3. This is a simple hand-operated dedicated tool that is pressed into the fitting groove of the shaft.

The dedicated tool 1 is prepared for each size in accordance with the nominal diameter (size) of the E-type retaining ring, and is widely used because of its low selling price. further,
As an auxiliary tool for inserting the E-type retaining ring 1 one by one into this special tool, the innermost part of the E-type retaining ring is guided to guide the inside of the E-type retaining ring, and the lowermost one of the stacked E-type retaining rings is easily arranged. Auxiliary tools which can be taken out to the public are also known. According to this auxiliary tool, when the lowermost sheet is taken out, the next one after the E-shaped retaining ring, which is subsequently stacked, is lowered by gravity and can be taken out one by one. Is to do so.

[0006]

However, according to the dedicated tool 1 shown in FIG. 13, when the E-shaped retaining ring A is press-fitted, the E-shaped retaining ring A is elastically deformed so as to open. At this time, an external force in the radial lure direction acts on the shaft body, which may damage the shaft body.

[0007] In addition, the shaft body into which the E-shaped retaining ring is normally press-fitted is often provided in a single support state because mechanical parts such as gears and levers are inserted.
Then, when the E-shaped retaining ring is press-fitted, an extra external force is applied to the shaft body, and the shaft body is easily inclined or deformed. For this reason, it has been necessary to take measures to prevent the shaft from tilting or deforming, for example, by using a special tool for preventing deformation.

[0008] Further, as a problem of the above-mentioned special tool 1, there is a problem that the E-shaped retaining ring A is set so as to be clamped one by one with the tool and then clamped in the fitting groove of the shaft body to be press-fitted. However, since the E-type retaining ring A is pressed and fitted after fitting, the workability is poor and the skill of the worker is required. In addition, the E-type retaining ring was press-fitted because the E-type retaining ring was not securely pressed into the fitting groove of the shaft body, or there was a problem that the E-type retaining ring and other parts were deformed or scratched. Needs confirmation work later.

On the other hand, the special tool 1 is an E-shaped snap ring A
When the arm is held, there are arm portions 2 and 3 that cause elastic deformation at the rear portion, and a grip portion is provided on an extension of the arm portion. Therefore, a groove for press-fitting an E-shaped snap ring around the shaft body. If a part or the like higher than the position is provided, there is a drawback that the press-fitting cannot be performed in parallel with the fitting groove. Therefore, as a countermeasure, a dedicated tool in which a part of the arm portion of the dedicated tool is bent in order to avoid interference with peripheral parts has been proposed.

However, in order to ensure the spring force of this dedicated tool, the length from the tool tip to the bent portion is limited to about twice the outer shape of the E-shaped snap ring shaft in order to ensure the spring force. Therefore, there is a problem that press-fitting cannot be performed if there is an interference part within the range.

On the other hand, when there is a concern about inclination or deformation of the shaft, or when there is an interference component higher than the position of the fitting groove around the shaft, the radio pliers is an extremely effective tool. By pressing and holding the rear part of the E-shaped retaining ring on one side of the nose pliers and supporting the shaft on the other side, press-fitting of the E-shaped retaining ring without applying load to the shaft and without causing tilting or deformation. And can be press-fitted while avoiding interference parts.

However, it is difficult for a veteran operator to pinch the arc portion of the thin circular E-shaped retaining ring with a pair of pliers, because the user has to pay attention to the gripping position and the amount of force applied. It is necessary. Furthermore, E
There is a possibility that the die retaining ring may come off, or the E-type retaining ring or other parts may be deformed or scratched due to excessive force.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can easily and reliably form an E-shaped retaining ring without giving a deformation or a flaw to a shaft body, an E-shaped retaining ring, and other parts. It is an object of the present invention to provide an E-type retaining ring mounting device that can be press-fitted into a device, and an E-type retaining ring storage device used in this device.

[0014]

In order to achieve the above object, an E-shaped retaining ring mounting device of the present invention comprises: an elastic retaining means for elastically retaining an E-shaped retaining ring from a peripheral direction thereof;
A drive means for moving the elastic holding means forward and backward with respect to a shaft body having a fitting groove formed therein, and a shaft body holding means for supporting and holding an outer peripheral surface of the shaft body; The holding surface of the body holding means for holding the shaft body is held by the holding means at the position of the holding surface that intersects with the axis connecting the axis center of the shaft body and substantially the center of the E-shaped retaining ring. The distance from the tip of the E-shaped retaining ring is larger than the diameter of the shaft, so that a gap is formed between the E-shaped retaining ring and the shaft held by the shaft holding means. It is characterized by:

A configuration in which a plurality of E-shaped retaining rings are arranged in a substantially constant orientation and held in a stacked state, and a retaining ring supplying means for supplying one E-shaped retaining ring at the tip end to the elastic retaining means is provided; The supply means is configured to be detachable from the main body, the elastic holding means is provided on a slider, and the driving means is a scissor-type lever in which two levers are cross-coupled in an X-shape, A configuration in which one lever tip is fixed to the slider and the other lever tip is fixed to the supply means, and the elastic holding means includes a holding part for holding the periphery of the E-shaped retaining ring, The configuration formed by a fixing portion for detachably fixing the holding portion for holding the E-shaped retaining ring of the elastic holding means is substantially a circular arc having an opening at a position facing the shaft body holding means. The configuration that is a shape, and the holding portion, From the tip for forming the opening toward the position of the holding portion that intersects the orthogonal line orthogonal to the axial direction of the shaft body, a configuration in which the thickness of the side surface that intersects the orthogonal line increases, The position of the tip of the holding portion for forming the opening is the position of E held by the holding portion.
The configuration arranged in the direction of the shaft body holding means from the approximate center of the die retaining ring, and the holding surface of the shaft body holding means has a cross section that forms a part of a circle or a polygon that guides the outer peripheral surface of the shaft body. The configuration having a shape, the shaft body holding means is capable of taking out the shaft body from a direction perpendicular to the axial direction, the structure having a shaft body taking-out area along the axial direction of the shaft body, The holding surface may have a configuration having an engaging portion for engaging with the fitting groove of the shaft, or a configuration in which the elastic holding means of the E-shaped retaining ring is detachable from the slide.

Alternatively, a main body having a retaining ring storing means for holding a plurality of E-shaped retaining rings in substantially the same direction, and a through-hole to which the storing means is attached and into which the plurality of E-shaped retaining rings can enter. And a slider slidably mounted on the outlet side of the through hole of the main body, and one of the plurality of E-shaped retaining rings formed at the distal end of the slider. Equipped with two arcuate elastic claws elastically held at the peripheral edge, the distance between the tips of both arcuate elastic claws is smaller than the diameter of the E-shaped retaining ring, and not smaller than the opening width of the E-shaped retaining ring. A shaft body holding means for holding a shaft body formed integrally with the main body and fitted with an E-shaped retaining ring in a loosely fitted state, and a driving means for the slider; The lowermost part of the surface of the holding means with which the shaft contacts,
The distance between the elastic holding means and the lower end of the E-shaped retaining ring when one of the tips of the E-shaped retaining ring is received is larger than the diameter of the shaft body.

The retaining ring storage means is detachable from the main body, the slider driving means is a solenoid or an air cylinder, and the elastic holding means is detachable from the slider. be able to.
Further, the E-type retaining ring storage device of the present invention is characterized in that it has a bar for holding a plurality of E-type retaining rings with their opening positions aligned substantially constant, and a mounting portion for detachably fixing the bars. And

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an embodiment of an E-type retaining ring mounting device according to the present invention. An E-type retaining ring mounting device 10 shown in FIG. 1 includes a retaining ring supply unit 11 that holds a large number of E-type retaining rings A so that their directions are substantially constant, and a main part of the retaining ring supplying unit 11. Main body 12, slide guides 13 attached to both sides of the main body, a slider 14 slidable in a dovetail groove formed in the slide guide 13, and two scissor-shaped levers 15a, 1
It has a driving means 15 in which 5b crosses in an X-shape, and a shaft holding means 16 formed at the lower part of the main body.

One end of one lever 15a of the driving device is fixed to the main body 12, and the other end of the lever 15b is fixed to the slider 14. The slider 14 is attached to the main body 12.
Is always urged upward in FIG.

The retaining ring supply means 11 includes a tension spring 11
a, and a retaining ring pushing member 1 attached to the tip
1 b presses the rearmost portions of the plurality of E-shaped retaining rings A toward the slider 14. One of the tips of the E-shaped retaining ring A is supplied to the elastic holding means at the lower end of the slider, and is press-fitted into the fitting groove b formed in the shaft B by sandwiching the driving means 15. .

FIG. 2 is a view showing the structure of the main body 12 which is a part of the retaining ring supply means 11. (A) is a top view,
This shows a state where a slide guide is attached. (B) is a side view of the main body viewed from the left side of FIG. 1, and (c) is an I-
It is I sectional drawing. As shown in these figures, the main body 12
The upper side has a substantially rectangular parallelepiped shape, the lower side has a small width, and both are connected by an inclined surface. The lower portion of the lower width is the shaft holding means 16. Also,
A hole 12 into which the compression spring 14a is inserted is provided on the upper surface of the main body 1.
a, and a female screw hole 12b to which the lever 15b is attached, below which there is a hole 12c into which the tension spring 11a is inserted, and a pin 12d traverses this hole. The pin 12d is for hooking one end of the tension spring 11a.

Below the hole 12c, a hole 12 into which a ring case (described later) constituting the retaining ring supply means 11 is fitted.
e is formed. The hole 12e has a step on the exit side, and the exit 12f has a size that allows the E-shaped retaining ring A to pass therethrough. In the lower part of the hole 12e, a groove 12g into which a bar 17 (described later) of a rectangular cross section of the retaining ring supply means 11 fits is formed.

The shaft body holding means 16 is formed integrally with the main body 12 and has a through hole 16a connecting a plurality of arcs having different center positions. The shaft B is inserted through the through hole 16a, and the shaft B is loosely fitted in the through hole 16a with a considerable gap. At the exit of the through hole 16a, a shaft B
A projection 16b is provided for fitting into the fitting groove b of the E-shaped retaining ring A formed on the shaft and positioning the shaft.

FIG. 3 is a diagram of the slider 14. (A)
1B is a side view of the slider as viewed from the left side of FIG. 1, FIG. 2B is a cross-sectional view taken along line II-II of FIG. 1A, and FIG. The slider 14 is an L-shaped plate as shown in (b), and the lower surface of the upper bent portion 14b is a surface that receives the compression spring 14a. On the lower end side, there are two elastic claws 14c, 14c having an arc shape as elastic holding means.
During this time, the E-shaped retaining ring A is elastically held. One of the elastic claws 14c has a step 14d so that the E-shaped retaining ring A passing through the hole 12e from the retaining ring supply means 11 does not pass through the slider 14. Also, the elastic claws 14c
Has a shape in which the distal end is thin and the width gradually increases toward the base end side, and is a shape that easily holds the E-shaped retaining ring elastically.

The diameter d0 of the E-shaped retaining ring A and the opening widths d1, 2
The relationship of the distance d2 between the tips of the two elastic claws 14c, 14c is such that d0> d2 ≧ d1, and when the E-shaped retaining ring A is held between the elastic claws 14c, 14c, the E-shaped retaining ring A
Are not allowed to fall from between the claws.

Both sides of the slider 14 have a 45 ° inclined surface 14 e, and both ends of rectangular plate-like slide guides 13, 13 attached to both sides of the main body 12,
It can be slid into the dovetail groove formed by the front surface of the main body.

FIGS. 4A and 4B are views of the bar 17 of the retaining ring supply means 11, wherein FIG. 4A is a top view and FIG. 4B is a front view. The bar 17 has a rectangular cross section, and has several projections 1 on the lower surface.
7a. The bar 17 is arranged as shown by the imaginary line in FIG. 2B, and has a size that just fits into the internal space of the E-shaped retaining ring A. Therefore, when the E-shaped retaining ring A fits into the bar 17 from its opening, it fits almost without looseness, and the direction of the E-shaped retaining ring is made substantially uniform.

FIGS. 5A and 5B are views of a ring case 18 for holding the bar 17, wherein FIG. 5A is a top view, FIG. 5B is a front view, and FIG.
Is a side view. Internal space 18a of ring case 18
Has a flange 18b near the tip, a front portion 18c of which has a cylindrical shape, and a rear portion 18d of which the E-shaped ring A has a rattle-free and slide-inable shape.
Has an open shape by removing the upper part of the cylinder. In addition, a hole 18e into which the projection 17a of the bar 17 fits is formed in the bottom of the rear portion 18d. That is, the bar 17 is inserted into the internal space 18a, the projection 17a of the bar 17 is fitted and fixed in the hole 18e, and about 100 to 200 E-shaped stoppers are provided so as to straddle the bar 17 in the ring case 18. The wheel is housed. The bar 17 and the ring case 18 constitute retaining ring storage means.

FIG. 6 is a sectional view of a main part of an assembled state of an E-type snap ring mounting device as one embodiment of the present invention. A ring case 18 on which a bar 17 is mounted and in which a large number of about 100 to 200 retaining rings A are housed, has a front portion 18.
By fitting c into the hole 12e of the main body 12, it is fixed to the main body 12, and becomes the retaining ring supply means 11. At this time, bar 1
The protrusion 17a at the tip of the groove 7 is formed in the groove 12 formed in the main body 12.
g (see FIG. 2) and functions as positioning in the rotation direction.

As shown in FIG. 1, a retaining ring pushing member 11b is inserted from the rear end of the bar 17 across the bar, and the other end of a tension spring 11a, one end of which is locked to the main body 12, is locked to this. Then, the retaining ring group is urged toward the slide. The leading end of the retaining ring A enters the elastic claw 14c and is pressed by the step 14d so as not to penetrate the slide and jump out.

As shown in FIG. 6, the shaft B is inserted into the through hole 16a of the shaft holding means 16. Axis B is through hole 16a
At this time, as shown in the figure, an interval of S is maintained between the upper surface of the shaft B and the lower end of the E-shaped retaining ring A held by the elastic claws 14c. It has become.
This interval makes the work extremely easy. However, since the condition of d0> d2 ≧ d1 is satisfied, the elastic claw 14c can hold the retaining ring A so as not to drop. Become.

When the shaft B is set as shown in FIG. 6 and the projection 16b as the engaging portion is fitted into the fitting groove b, a force in the closing direction is applied to the scissor-type driving device 15. Then, the slider 14 moves in the direction of the arrow in FIG.
The mold retaining ring A is pushed into the fitting groove b to be fitted.

In the first embodiment, the shaft B is inserted into the through hole 16a.
, It had to be inserted from one end of the shaft B. On the other hand, the shaft B may be supported at both ends. In such a case, the E-shaped retaining ring A must be mounted before the shaft B is set at a predetermined position. However, this may be difficult depending on the working conditions, and the apparatus of Example 1 may not be used.

When the E-shaped retaining ring A enters the fitting groove b of the shaft B, the E-shaped retaining ring A temporarily spreads outward and returns to the original state. Therefore, the elastic claw 14c spreads outward together with the retaining ring A when the retaining ring A spreads, and the elastic claw can return to the original shape when the diameter of the retaining ring returns to its original shape. have.

Therefore, the rigidity of the elastic claw 14c cannot be made too high. If the rigidity is too high, when the E-shaped retaining ring needs to be expanded, the expansion is suppressed and it becomes impossible to fit the retaining ring on the shaft. Since the rigidity is not high, the elastic claws 14c
With the repetitive use, so-called settling is likely to occur due to repeated use, the elasticity is lost, the state remains open, and the retaining ring cannot be held. In that case, the entire slider 14 needs to be replaced, which is wasteful. To solve these problems, the following Example 2
Was invented.

FIG. 7 is a view showing the main body 12 and the shaft body holding means 20 according to the second embodiment. The portion of the main body 12 is the same as that of the first embodiment except that the number of the holes 12a into which the compression springs 14a are inserted is two, and this is attached instead of the main body 12 and the shaft holding means 16 in FIG.

In this embodiment, the shaft holding means 20 comprises a hook-shaped guide portion 20a having a cross-sectional shape which forms a part of a circular shape for guiding the outer peripheral surface of the shaft B, and the shaft B And an opening 20b as a shaft body take-out area for inserting the shaft body from its side surface. The distance between the lowermost part 20c of the surface of the shaft holding means 20 with which the shaft B contacts, and the lower end of the E-shaped retaining ring when the elastic retaining means receives one of the tips of the E-shaped retaining ring A. W is larger than the diameter D of the shaft. This has the same meaning as in the first embodiment, in which the space S shown in FIG. 6 is maintained between the upper surface of the shaft B and the lower end of the E-shaped retaining ring A. The guide portion 20a has an arc shape, but may have a configuration using a part of a polygon.

FIG. 8 is a drawing of a slider according to the second embodiment.
(A) is a side view, (b) is a center sectional view of a side view.
This slider 21 has the same basic L-shape as the first embodiment. However, the number of compression springs 14a received by the upper bent portion 21b is one in the first embodiment, but is two in this embodiment. There is no elastic claw 14c below the slider 21.
Instead, it differs in that a housing recess 21a is formed.

FIG. 9 is a diagram of the elastic holding means 22. As shown in the figure, the elastic holding means 22 has an elliptical locking portion 22a at the upper portion, and a narrow neck portion 22b below the locking portion 22a.
And has two arcuate elastic claws 22c. The elastic holding means 22 is formed by cutting out from a plate-like spring steel or the like, and has the elastic claws 14c described in the first embodiment.
It has appropriate elasticity as well. Then, as shown in FIG. 9C, when the elastic holding means 22 is fitted into the accommodation recess 21a, a gap t is formed between the elastic claw 22c and the accommodation recess 21a. This is because the elastic claw 22c can be elastically deformed outward in accordance with the expansion when the E-shaped retaining ring A enters the fitting groove of the shaft B. The outer diameter d0 of the E-shaped retaining ring A, the opening width d1 of the retaining ring A, and the claw 22c
Is in the relationship of d0> d2 ≧ d1 as in the first embodiment.

FIG. 10 is a sectional view showing a main part of the second embodiment. In the second embodiment, since the elastic holding means 22 is detachable from the slider 21, the device can be used for a long time by replacing the elastic holding means 22 as a consumable item.

Further, as shown in FIG.
0, an opening 20b is formed. Therefore, even if both ends of the shaft B are supported by a machine, the shaft B is inserted into the shaft holding means 20 by inserting the shaft B through the opening 20b. Can be maintained, and the usable range of the device can be expanded.

FIGS. 11A and 11B are views for explaining the main body of the third embodiment of the present invention. FIG. 11A is a top view, FIG. 11B is a side view, and FIG.
Is a central sectional view of the side view. Main body 12 of this embodiment
Is different from the main body of the second embodiment in that two mounting holes 12i, 12i are formed obliquely below the through hole 12e.

FIGS. 12A and 12B show the retaining ring storing means 31. FIG. 12A is a side view and FIG. 12B is a front view. This retaining ring storage means holds a plurality of E-shaped retaining rings in substantially the same direction, and is attached to the main body 12 to constitute the retaining ring supply means 11.

The retaining ring storage means 31 includes a rectangular bar 31a.
Bar 3 having ribs 31b, 31b formed on both sides above
A cross beam 31d is fixed near the tip of 1c, and two rods 31e, 31e protrude on both sides of the cross beam 31d. The mounting part is constituted by the cross beam and the rod. An E-shaped retaining ring A is fitted to the cross bar 31c as shown by a virtual line. In Example 1, the bar was a rectangular bar without the rib 31b. However, when the E-shaped retaining ring A was fitted, there was slight backlash and the direction of the retaining ring was not completely fixed. However, by forming the ribs 31b and forming a cross beam as in the embodiment of the present invention, when the E-shaped retaining ring is fitted, rattling is almost completely suppressed, and the direction of the retaining ring is accurately and uniformly aligned. Became possible.

The rods 31e, 3 provided on the cross beam 31d
1e is inserted into the mounting holes 12i, 12i in FIG. 11B, and the retaining ring storage means 31 is fixed to the main body 12. Although not shown, a ball and a spring for biasing the ball are provided in the mounting hole 12i, and a concave portion corresponding to the ball is formed in the rod 31e. Then, the ball is dropped into this recess to stop the click, and the retaining ring storage means 31
Can be fixed to the main body 12 with one touch.

According to the third embodiment, the retaining ring storage means 3
1 can be prepared separately from the device of the invention, and by replacing this part, continuous use is possible.

[0047]

According to the present invention as described above,
A means for elastically holding the E-shaped retaining ring at the periphery thereof, a slider for moving the elastic holding means forward and backward with respect to the shaft body having the fitting groove formed therein, a driving means for the slider, and A shaft body holding means for fitting and holding, and when the E-shaped retaining ring is held by the elastic holding means, a gap is formed between the E-shaped retaining ring and the shaft held by the shaft body holding means. With such a configuration, the E-shaped retaining ring can be easily fitted into a predetermined portion of the shaft without causing deformation or scratches on the shaft, the E-shaped retaining ring, and other components.

Retaining ring supply means for holding a plurality of E-shaped retaining rings aligned in a substantially constant direction and in a stacked state, and supplying one E-shaped retaining ring at the tip end to the elastic retaining means is provided. When the above-mentioned slider is mounted so as to be able to move forward and backward, a large number of E-shaped retaining rings can be continuously fitted to the shaft.

The shaft body holding means has a guide portion having a sectional shape that forms a part of a circle or a polygon for guiding the outer peripheral surface of the shaft body, and a shaft for inserting the shaft body into the guide portion from a side surface thereof. With the configuration having an opening, the device of the present invention can be inserted from the side of the shaft, and the device can be used even if both ends of the shaft are fixed.

If the guide portion is provided with a projection which enters the fitting groove of the shaft, the position of the shaft can be easily determined.
Work becomes easier. If the elastic retaining means of the retaining ring is configured to be detachable from the slide, the retaining ring retaining means can be replaced as a consumable.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of an E-type retaining ring mounting device according to the present invention.

FIG. 2 is a diagram showing a configuration of a main body.

FIG. 3 is a diagram showing a configuration of a slider.

FIG. 4 is a view of a bar of a retaining ring supply unit.

FIG. 5 is a view of a ring case 18 for holding a bar.

FIG. 6 is a cross-sectional view of a main part of an assembled state of the E-type snap ring mounting device according to the first embodiment of the present invention.

FIG. 7 is a view showing a main body according to a second embodiment of the present invention.

FIG. 8 is a view of a slider according to a second embodiment of the present invention.

FIG. 9 is a view of a retaining ring holding means according to a second embodiment of the present invention.

FIG. 10 is a sectional view of a main part of an assembled state of an E-type snap ring mounting device according to a second embodiment of the present invention.

FIG. 11 is a view showing a main body according to a third embodiment of the present invention.

FIG. 12 is a view showing a retaining ring storage means 31;

FIG. 13 is a view of a conventional dedicated tool for press-fitting an E-shaped retaining ring.

[Explanation of symbols]

 A E-type retaining ring B Shaft body b Fitting groove S Gap 11 Retaining ring supply means 12 Main body 14 Slider 14c, 22 Elastic holding means 14c, 22c Elastic claw 15 Drive means 15a, 15b Lever 16, 20 Shaft holding means 16b Projection 17, 18, 31 Retaining ring storage means

Claims (17)

[Claims] 1. An elastic holding means for elastically holding an E-shaped retaining ring from a peripheral direction thereof, and a driving means for moving the elastic holding means forward and backward with respect to a shaft formed with a fitting groove. And a shaft holding means for supporting and holding the outer peripheral surface of the shaft, wherein a holding surface for holding the shaft of the shaft holding means is provided at the center of the shaft of the shaft and the shaft. The distance between the position of the holding surface that intersects with the axis connecting the approximate center of the E-shaped retaining ring and the position of the tip of the E-shaped retaining ring held by the holding means is larger than the diameter of the shaft, Thereby, a clearance is formed between the E-shaped retaining ring and the shaft body held by the shaft body holding means. 2. A retaining ring supply means for holding a plurality of E-shaped retaining rings aligned and arranged in a substantially constant direction in a stacked state, and supplying one E-shaped retaining ring at a tip end to said elastic retaining means. The E-type retaining ring mounting device according to claim 1, wherein: 3. The mounting device according to claim 2, wherein said supply means is detachable from the main body. 4. The resilient holding means is provided on a slider, and the driving means comprises a scissor-shaped lever in which two levers are cross-coupled in an X-shape. 3. The E-type retaining ring mounting device according to claim 2, wherein the end of said lever is fixed to said supply means. 5. The elastic holding means comprises a holding portion for holding a peripheral edge of an E-shaped retaining ring, and a fixing portion for detachably fixing the holding portion. Item 7. An E-type retaining ring mounting device according to Item 1. 6. A holding part for holding an E-shaped retaining ring of said elastic holding means, which has a substantially arc shape having an opening at a position facing said shaft body holding means.
An E-shaped retaining ring mounting device as described in the above. 7. A side surface intersecting the orthogonal line from a tip for forming the opening to a position of the holding unit intersecting an orthogonal line orthogonal to an axial direction of the shaft body. 7. The E-type snap ring mounting device according to claim 5, wherein the thickness is increased. 8. A front end position for forming the opening of the holding portion is arranged in a direction of the shaft body holding means from substantially a center of an E-shaped retaining ring held by the holding portion. The E-type retaining ring mounting device according to any one of claims 5 to 7. 9. The shaft according to claim 1, wherein the holding surface of the shaft holding means has a cross-sectional shape that forms a part of a circle or a polygon for guiding the outer peripheral surface of the shaft. E-type retaining ring mounting device according to any of the above. 10. The shaft body holding means has a shaft body taking-out area along the axis direction of the shaft body, from which the shaft body can be taken out from a direction perpendicular to the axial direction. 2. The E-type retaining ring mounting device according to 1. 11. The E-type retaining ring mounting device according to claim 1, wherein the holding surface has an engaging portion for engaging with a fitting groove of the shaft body. 12. An elastic holding means for said E-shaped retaining ring is detachable from said slide.
12. The E-type retaining ring mounting device according to any one of items 1 to 11. 13. A main body having a retaining ring storage means for holding a plurality of E-shaped retaining rings aligned in substantially the same direction, and a through-hole to which the storage means is attached and into which the plurality of E-shaped retaining rings can enter. And a slider slidably mounted on the outlet side of the through hole of the main body; and one of the tips of the plurality of E-shaped retaining rings formed at the tip of the slider. Equipped with two arcuate elastic claws elastically held at the peripheral edge, the distance between the tips of both arcuate elastic claws is smaller than the diameter of the E-shaped retaining ring, and not smaller than the opening width of the E-shaped retaining ring. Means, a shaft body holding means for holding a shaft body formed integrally with the main body and fitted with an E-shaped retaining ring in a loosely fitted state, and a driving means for the slider; The lowermost part of the surface of the holding means contacting the shaft, and the elastic holding means An E-type retaining ring mounting device, wherein the distance from the lower end of the E-type retaining ring when one of the tips of the die retaining ring is received is larger than the diameter of the shaft body. 14. The retaining ring mounting device according to claim 13, wherein said retaining ring storage means is detachable from the main body. 15. The apparatus according to claim 1, wherein said slider driving means is a solenoid or an air cylinder.
15. The E-type retaining ring mounting device according to 3 or 14. 16. The E-type snap ring mounting device according to claim 13, wherein the elastic holding means is detachable from the slider. 17. A stockpiling of E-shaped retaining rings, comprising a bar for holding a plurality of E-shaped retaining rings with their opening positions aligned substantially constant, and a mounting portion for removably fixing the bars. apparatus.