JPH0429945Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial field of application The invention involves dropping a circlip approximately horizontally into a guide hole having a tapered guide surface of a guide body.
In a circlip assembly device that presses the circlip downward to gradually reduce its diameter and fit it into the fitting groove of the member to be assembled under the guide body, the circlip that has fallen into the guide hole is always kept in a substantially horizontal position. This invention relates to a guide device that guides the user while holding the device in place.

(2) Prior Art A conventional circlip is known in which the circlip is guided by a guide member having a tapered guide surface and is automatically fitted into a fitting groove of a member to be assembled (Japanese Unexamined Patent Publication No. 59-196133). (Refer to Japanese Utility Model Application Publication No. 60-91369).

(3) Problems to be solved by the invention Incidentally, in its free state, the circlip C forms an elliptical shape with its opening 5 located at one end in the short axis direction, as shown by the solid line in Figure 4 (the chain line indicates the assembled state). At the same time, since the proximal end 8 side facing the opening 5 side is formed thicker than other parts and the weight balance is not good, the circlip C is in a horizontal state.
When the guide member is dropped into the guide hole having the tapered guide surface, both ends 20 of the circlip C on the long axis l-l side first contact the tapered guide surface and rotate the clip C around the long axis l-l. Because of this, the clip C is often held at an angle within the guide hole. For this reason, it is necessary to manually correct the circlip to its normal horizontal position, resulting in problems such as poor work efficiency and increased assembly costs.

The present invention has been proposed in view of the above-mentioned circumstances, and has a simple structure so that when the circlip falls into the guide hole of the guide body, the clip is always stably held in a substantially horizontal assembly position. An object of the present invention is to provide a guide device in a circlip assembly device.

B. Structure of the invention (1) Means for solving the problems In order to achieve the above object, the present invention is designed to take a circlip that is approximately elliptical in its free state and has an opening at one end in the direction of its short axis in an approximately horizontal position. Then, the circlip was dropped into a guide hole having a tapered guide surface of the guide body, and the circlip was pressed downward to gradually reduce the diameter and fit into the fitting groove of the member to be assembled under the guide body. In the circlip assembly device, the upper part of the tapered guide surface is capable of contacting the outer circumferential surface of the circlip in a free state on the opening side and the outer circumferential surface on the proximal end side opposite to the opening side. providing first and second receiving parts;
Furthermore, when the circlip falls into the guide hole, before the outer circumferential surfaces of both ends on the long axis side of the clip come into contact with the tapered guide surface, the outer circumferential surfaces of the opening side and the proximal end side of the clip touch the first side. The upper part of the tapered guide surface has an inner diameter larger than the outer diameter of both ends of the long axis side of the circlip in the free state so that the clip can be held in a substantially horizontal position by contacting the circlip and the second receiving part. It is characterized by forming relief surfaces that can face the outer circumferential surfaces of both ends on the long axis side.

The number of the first and second receiving parts is not limited as long as they can stably hold the circlip within the guide hole.

(2) Effect: The circlip is allowed to fall naturally into the guide hole of the guide body while maintaining a substantially horizontal position using an appropriate supply means. Then, before both ends of the long axis side of this circlip come into contact with the tapered guide surface, the outer circumferential surface on the opening side and the outer circumferential surface on the proximal side opposite to the opening are formed on the upper part of the tapered guide surface of the guide hole. It contacts the first and second receiving parts. As a result, the circlip is stably held in a substantially horizontal position, is pushed downward by the pusher, and is guided to the tapered guide surface while being reduced in diameter, and is fitted into the fitting groove of the member to be assembled under the guide main body.

(3) Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The assembly device for Circlip C is
It is composed of a guide device G according to the present invention and a conventionally known pusher P.

Next, the configuration of the guide device G will be explained. The guide body 1 forming the main body of the device G is:
It is formed into a hollow cylindrical shape with a vertical center axis LL. A guide hole 2 with open upper and lower end surfaces is formed in the guide body 1, and a tapered guide surface 3 consisting of a female tapered surface expanding upward is formed on the inner peripheral surface of the guide hole 2. Said guide hole 2
A chamfer 4 having an angle larger than the inclination angle of the tapered guide surface 3 is formed on the upper edge of the opening, so that the circlip C can be easily guided into the guide hole 2.

As shown in FIG. 2, the upper part of the tapered guide surface 3 includes a first receiving part 7 and an opening 5 thereof that can come into contact with an outer surface 6 on the opening 5 side of the circlip C, which will be described later.
Three second receiving parts 10 that can come into contact with the outer surface 9 on the side of the proximal end 8 facing the side are integrally provided to protrude inward. The receiving surfaces 7 ₁ of the first and second receiving parts 7 and 10,
10 ₁ are each formed into a concave arc surface centered near the central axis LL of the guide hole 2 .

A flange piece 11 is integrally formed on the upper outer periphery of the guide body 1, and this flange piece 11 is attached to a base 12.
By being engaged with the guide body 1, the guide body 1 is supported such that its longitudinal central axis LL faces in the vertical direction. In addition, an annular recess 1 is provided at the lower edge of the opening of the guide body 1.
3 is formed, and a hollow cylindrical member to be assembled 14 into which the circlip C is to be fitted is fitted and connected to this annular recess 13. On the upper inner periphery of the assembled member 14,
A fitting groove 15 for fitting the circlip C is formed. In addition, in Fig. 2, 16 is the circlip C.
It is a ball bearing that is positioned by

Incidentally, the circlip C is generally formed in a notched circular shape with an opening 5, and in its free state, as shown in FIG. That is, the opening 5 is formed in an elliptical shape located at one end in the short axis direction, and the base end 8 facing the opening 5 is formed thicker than other parts. A through hole 17 for inserting a remover therein is bored at the free end of the circlip C, sandwiching the opening 5 therebetween.

Further, on the upper part of the tapered guide surface 3, there is provided the above-mentioned shape of the clip C before the outer circumferential surface of both ends 20 on the long axis side of the clip C comes into contact with the tapered guide surface 3 when the circlip C falls into the guide hole 2, which will be described later. The circlip C is in a free state so that the outer circumferential surfaces on the opening 5 side and the base end 8 side are in contact with the first and second receiving parts 7 and 10, respectively, and can hold the clip C in a substantially horizontal position. A pair of flank surfaces 3a each having an inner diameter larger than the outer diameter of both ends 20 on the long axis side and facing the outer circumferential surfaces of both ends 20 on the long axis side are provided.
and are formed between the second receiving parts 7 and 10, respectively.

Next, the operation of this embodiment will be explained. As shown by the chain line a in FIG.
It is supplied onto the guide body 1 with the opening 5 facing forward, and is dropped into the guide hole 2 by its own weight. At this time, as shown in FIG. 2, before both ends of the long axis l-l side of the circlip C come into contact with the tapered guide surface 3, the outer surface 6 of the opening 5 side comes into contact with the first receiving part 7. The outer surface 9 on the base end 8 side contacts the three second receiving parts 10, and the circlip C is held in the upper part of the guide hole 2 while maintaining a horizontal position.

If the pusher P is lowered here, the circlip C is guided by the tapered guide surface 3 and descends while being reduced in diameter. Insert groove 1 by force.
Fitted into 5.

FIG. 5 shows a second embodiment of the invention. In this embodiment, the two second receiving parts 10 that contact the outer surface 9 on the proximal end 8 side of the circlip C are arranged on one side of the tapered guide surface 3 of the guide body 1 at a wider interval than in the first embodiment. This second
The embodiment also has the same effect as the first embodiment.

C. Effects of the invention As is clear from the above embodiments, the upper part of the tapered guide surface of the guide hole of the guide body has the outer peripheral surface on the opening side of the circlip and the outer peripheral surface on the proximal end side facing the opening. the first contacting each surface
and a second receiving part, and furthermore, when the circlip falls into the guide hole, before the outer circumferential surfaces of both ends on the long axis side of the clip come into contact with the tapered guide surface, the opening side and the base end side of the clip are The upper part of the tapered guide surface is provided with outer surfaces of both ends of the long axis side of the circlip in a free state so that each outer circumferential surface can contact the first and second receiving parts and hold the clip in a substantially horizontal position. Since the flanks have an inner diameter larger than the diameter and can face the outer circumferential surfaces of both ends of the long axis, the circlip that falls into the guide hole can always maintain a horizontal insertion position. Therefore, it is possible to omit the conventional work of manually correcting the posture of the circlip, and the efficiency of the circlip assembly work can be improved.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the device of the present invention, FIG. 1 is a vertical sectional side view of the device of the present invention taken along the line I in FIG. 2, and FIG. 2 is a side view taken along the line I in FIG. A cross-sectional view of the guide main body along , Figure 3 is a cross-sectional view of the guide body along Figure 2-
4 is a plan view of the circlip in its free state; FIG. 5 is a cross-sectional view of the upper part of the guide body taken along a line; FIG. It is a front view. C...Circlip, 1...Guide body, 2...
... Guide hole, 3 ... Tapered guide surface, 3a ... Flank surface, 5 ... Opening, 7 ... First receiving part, 8 ... Base end part, 10 ... Second receiving part, 14 ... Covering assembly parts,
15... Fitting groove, 20... Both ends.

Claims (1)

[Scope of utility model registration request] A circlip C, which is approximately elliptical in its free state and has an opening 5 at one end in the short axis direction, is dropped into the guide hole 2 having the tapered guide surface 3 of the guide body 1 in a substantially horizontal position, and the circlip C is In the circlip assembly device, the diameter of the circlip is gradually reduced by pressing downward and the circlip is fitted into the fitting groove 15 of the member to be assembled 14 under the guide main body 1. , first and second receiving parts 7 and 10 are provided which can contact the outer circumferential surface of the circlip C in a free state on the opening 5 side and the outer circumferential surface on the proximal end 8 side opposite to the opening 5 side, respectively. , and further a circlip C into the guide hole 2.
When the clip C is dropped, before the outer circumferential surfaces of both ends 20 on the long axis side of the clip C come into contact with the tapered guide surface 3, the outer circumferential surfaces of the opening 5 side and the proximal end 8 side of the clip C are connected to the first and second ends. The upper part of the tapered guide surface 3 has an outer diameter of both ends 20 on the long axis side of the circlip C in a free state so that the clip C can be held in a substantially horizontal position by contacting the two receiving parts 7 and 10, respectively. A guide device for a circlip assembling device, characterized in that flanks 3a are formed having an inner diameter larger than that of the circlip and facing the outer circumferential surfaces of both ends 20 on the long axis side.