JPH0719610U - Retaining ring for both shaft and hole - Google Patents

Abstract

(57) [Summary] [Purpose] To be used for both shafts and holes. [Structure] Insert holes are formed at both ends of a substantially C-shaped retaining ring body, and insert holes are formed near at least one end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a retaining ring for both shafts and holes that can be used for both shafts and holes.

[0002]

[Prior art]

 Conventional C-shaped retaining rings include those for shafts and those for holes. For example, in a C type snap ring for a shaft, insert the tip of the attachment / detachment tool into the insertion holes at both ends, expand the space between both ends to increase the inner diameter, and then fit and remove it in the groove on the shaft surface. For the C-shaped retaining ring, the tip of the attachment / detachment tool is inserted into the insertion holes at both ends, and the outer diameter is reduced by narrowing the space between both ends to allow fitting and removal in the groove of the hole surface. It has the advantage of being easy.

By the way, since the above-mentioned conventional C-shaped retaining ring is dedicated for the shaft and the hole, it has the following problems. a. There is a limitation in use that the one for the shaft can be used only for the shaft and the one for the hole can be used only for the hole. b. Press molds are required for both shafts and holes. c. It takes time to manufacture, store, and manage the shaft and hole separately.

[0004]

[Problems to be solved by the device]

 The problem to be solved is that it is designed exclusively for the shaft and the hole, and cannot be structurally shared.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, insertion holes are formed at both ends of the snap ring body having a substantially C shape, and insertion holes are formed near at least one end.

In the present invention, the opposite end portions of both ends are preferably formed by inclining in parallel from the front surface side to the back surface side, and both end portions easily overlap each other when the diameter of the retaining ring body is reduced. The work of attaching / detaching to / from the groove of the hole can be smoothly performed. The distance between both ends is arbitrary, and may be small or large, and may be determined in consideration of the fitting strength into the groove, the fixing strength of the fixed body, and the like.

[0007] Furthermore, the distance between both ends and the distance between the insertion hole at one end and the insertion hole near the other end are arbitrary. For example, a detachable tool may be attached to the insertion hole at one end and the other end. When it is inserted into the insertion hole near the part and reduced in diameter so that it can fit in the groove of the hole, the other end rides on one end and inserts into the insertion hole of the same end. The contact ring is set so that it can be confirmed that the retaining ring body can be attached to and detached from the groove of the hole by this contact shock. The deformation may not occur. This relationship also applies to the case where the insertion holes are opened near both ends of both.

The cross-sectional shape of the snap ring body is preferably rectangular, but may be other shapes such as circular, square, and other shapes. The material is a known member, and examples thereof include metal such as a spring member and resin such as engineer plastic.

[0009]

[Action]

 According to the present invention, since the insertion holes are opened at both ends of the retaining ring body having the substantially C shape, and the insertion holes are opened near at least one end, the insertion holes at both ends are attached and detached to / from the groove portion of the shaft. To increase the diameter of the retaining ring body by inserting the attachment / detachment tool into the groove, and to attach / detach the attaching / detaching tool to the insertion hole at one end and the insertion hole near the other end when attaching / detaching to / from the groove of the hole, reduce the diameter of the retaining ring body. This makes it possible to quickly attach / detach to / from the groove of the shaft or the hole, and attach / detach to / from both the shaft and the hole.

The retaining ring main body can be easily manufactured by press molding or the like together with each insertion hole, and it can be covered by one molding die, and there is no need to separate it for the shaft and the hole. Easy to manage and great economic effect.

[0011]

【Example】

 FIG. 1 illustrates a first embodiment of a retaining ring for both shaft and hole according to the present invention. A retaining ring body 1 having a substantially C shape traverses with the short side being the thickness and the long side being the front and back sides. Since the inner surface has a substantially rectangular shape, the width between the inner peripheral edge and the outer peripheral edge is gradually narrowed from the intermediate portion to the left and right end portions except for the inner edge portions of the left and right end portions 2 and 3 which are concentric with the outer peripheral edge. It is formed in a non-concentric shape, and can be elastically contracted, expanded, and elastically restored by opening and closing the left and right ends 2, 3 in the circumferential direction.

The left and right end portions 2 and 3 respectively have penetrating insertion holes 4 from the front surface side to the back surface side, and also have insertion holes 5 near the right end portion 3 in the same manner. The front end portions 2a and 3a of the left and right end portions 2 and 3 facing each other are formed so as to be inclined in a horizontal direction from the front surface side to the back surface side.

In addition, the distance between the tip portions 2a and 3a at the left and right ends 2 and 3 is narrow, and the distance between the left and right insertion holes 4 at both ends 2 and 3 is narrow, so that the detachable tool can be attached to the left end portion 2 only. When the insertion hole 4 and the insertion hole 5 near the right end portion 3 are inserted and reduced in diameter so that they can be fitted in the shallow groove portion, the right end portion 3 rides on the surface of the left end portion 2 and the insertion hole of the left end portion 2 thereof. 4 is set so as to abut against the tip of the insertion-type detachable tool.

Accordingly, when attaching / detaching to / from the groove portion of the shaft, the attaching / detaching tool is inserted into the insertion holes 4 and 4 of the left and right end portions 2 and 3 to expand the diameter of the retaining ring body 1 and the left end portion 2 is attached / detached to / from the groove portion of the hole. By inserting an attachment / detachment tool into the insertion hole 4 and the insertion hole 5 near the right end 3 to reduce the diameter of the retaining ring body 1, it can be quickly attached / detached to / from the shaft or the groove of the hole. It can be attached to and detached from any of these and can be shared.

Further, the retaining ring body 1 can be easily manufactured by press molding or the like with each of the insertion holes 4 and 5, and can be covered by one molding die, and there is no need to separate the shaft and hole. It is easy to manufacture, store and manage, and has a large economic effect.

Furthermore, since the opposed tip portions 2a and 3a of the left and right end portions 2 and 3 are formed to be inclined in parallel from the front surface side to the back surface side, when the retaining ring body 1 is reduced in diameter. The left and right end portions 2 and 3 are easily overlapped with each other, so that the attachment / detachment work to / from the groove portion of the hole can be smoothly performed.

In addition, when the retaining ring body 1 is contracted in diameter when attaching or detaching to / from the groove portion of the hole, the right end part 3 rides on the surface side of the left end part 2 and is inserted into the insertion hole 4 of the left end part 2 of the insertion / removal tool tip. It is confirmed that the retaining ring body 1 can be attached to and detached from the groove of the hole by this contact shock, and the retaining ring body 1 is not deformed due to excessive diameter reduction. Can be used even if the groove is shallow.

At the time of attachment / detachment to / from the groove portion of the shaft, since the space between the left and right insertion holes 4 of both end portions 2 and 3 is close, the attachment / detachment tool can be easily inserted and the attachment / detachment work can be performed quickly.

FIG. 2 illustrates a second embodiment of the retaining ring for both shaft and hole of the present invention. Since the structure is basically the same as that of the first embodiment, a common structure is provided. The description will be omitted and different configurations will be described.

Insertion holes 5 are opened near the left and right ends 2 and 3, respectively.

As a result, there is the same effect as that of the first embodiment, and when attaching / detaching to / from the groove portion of the hole, the attachment / detachment tool is inserted into the left and right insertion holes 5 near both end portions 2 and 3, and the tip end portion is inserted. Since the diameters of 2a and 3a can be greatly reduced until they come into contact with the tip of the detachable tool, the groove of the hole can be used from normal depth to deep.

Each of the above-described embodiments is merely an example of the present invention, and other embodiments are also possible. For example, the retaining ring body 1 having a substantially C shape has an outer peripheral edge and an inner peripheral edge. Except for the concentric left and right end portions 2 and 3 outer edge portions, the non-concentric circle shape is formed such that the width between the middle portion and the inner peripheral edge is gradually narrowed toward the left and right end portions. Is also good.

[0023]

[Effect of device]

 A. According to claim 1, since the insertion holes are opened at both ends of the substantially C-shaped snap ring body, and the insertion holes are opened near at least one end, the both ends are inserted when the shaft is attached to or detached from the groove. By inserting the attachment / detachment tool into the hole to increase the diameter of the retaining ring body, when attaching / detaching to / from the groove of the hole, the attachment / detachment tool is inserted into the insertion hole at one end and the insertion hole near the other end to reduce the diameter of the retaining ring body. It can be quickly attached to and detached from the shaft or the groove of the hole, and it can be attached to and detached from both the shaft and the hole.

B. According to the above paragraph, the snap ring main body can be easily manufactured by press molding etc. with each insertion hole, and it can be covered by one molding die, and there is no need to separate it for the shaft and the hole, so it can be manufactured, stored, and stored. Easy to manage and great economic effect.

[Brief description of drawings]

FIG. 1 illustrates a first embodiment of a retaining ring for both shaft and hole of the present invention, (A) is a front view, (B) is a bottom view, and (C).
Is a partially enlarged bottom view.

FIG. 2 illustrates a second embodiment of a retaining ring for both shaft and hole of the present invention, (A) is a front view and (B) is a bottom view.

[Explanation of symbols]

 1 Retaining ring body 2 Left end part 2a Left end part 3 Right end part 3a Right end part 4,5 Insertion hole

Claims (1)

[Scope of utility model registration request] 1. A retaining ring for both a shaft and a hole, wherein insertion holes are opened at both ends of a substantially C-shaped retaining ring body, and insertion holes are opened near at least one end.