JPH09189308A - Joining device of cylindrical body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining device of a cylindrical body devised capable of easily fixing two or more than two of the cylindrical bodies having the same shape and the same diameter by using an irregular fitting means having respective compatibility. SOLUTION: One or more than one set of recessed parts 7a, 7b and protruded parts 7c, 7d is provided in the respective circumferential direction on contact end parts 7 of two or more than two of cylindrical bodies 6, 6A having the same diameter connected by respectively making contact with each other in the longitudinal direction, the protruded part of the one cylindrical body is formed so as to fit in the recessed part of the other cylindrical body respectively, a groove 8 is formed along the peripheral direction of the protruded part of the one cylindrical body, the continuous groove is formed in a state joined with each other, a ring connected body 5 consisting of an elastic body a part of which is lacking and having recovery force in the radial direction is fit in the groove 8, and two or more than two of the cylindrical bodies 6, 6A are fixed and joined to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical body coupling device in which cylindrical bodies having the same diameter are joined to each other by using annular coupling bodies having a restoring force in the longitudinal direction and the radial direction, The cylindrical body is used as a bushing fitted in a bolt hole or the like that receives a load in the axial direction.

[0002]

2. Description of the Related Art Conventionally, when connecting a plurality of cylindrical bodies, different types such as male and female shapes that are fitted to each other are formed at respective joints, and they are fitted or screwed together. Connected the cylinders.

[0003]

According to the above-mentioned means, a pair of joint parts, such as male and female, which are always different from each other are required to join a plurality of cylindrical bodies, and the cylindrical bodies of the same type are completely joined together. It didn't reach.

The present invention provides a cylindrical body joining apparatus capable of easily fixing and joining two or more cylindrical bodies having the same diameter by using mutually compatible concavo-convex fitting means. The task is to do.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that abutting end portions of two or more cylindrical bodies having the same diameter that are abutted and joined to each other in the longitudinal direction. , Each having one or more sets of concave and convex portions in the circumferential direction,
The convex part of one cylinder is formed so as to fit into the concave part of the other cylinder, and the groove is formed along the inner peripheral surface of the convex part of both cylinders. A continuous groove is formed, and an annular coupling body made of an elastic body partially lacking and having a restoring force in the radial direction is fitted into the groove to fix and join two or more cylindrical bodies. It is characterized in that it is configured to.

Further, the invention of claim 2 is characterized in that each of the one or more sets of recesses and protrusions provided at the abutting end of the cylindrical body is formed in a rectangular shape along the circumferential direction. .

Further, in the third aspect of the present invention, the groove formed along the circumferential direction of the convex portion has a rectangular cross-sectional shape, the annular coupling body is fitted into the groove, and a cylindrical body is formed by a longitudinal force. It is characterized by the fact that the joint of is not broken.

Further, the invention of claim 4 is characterized in that the cylindrical body is used as a bushing fitted in a bolt hole for receiving a load in the axial direction.

[0010]

Embodiments of the present invention will now be described with reference to the examples illustrated in the drawings. The embodiments illustrated and described below do not limit the scope of the present invention.

FIG. 1 is a perspective view of a cylindrical body showing an embodiment of the present invention. In the figure, reference numeral 1 denotes one of two or more cylindrical bodies that are abutted and joined to each other in the longitudinal direction, and the upper abutting end portion 2 of the cylindrical body 1 has a rectangular shape extending over a semicircle. A rectangular concave portion 2a and a convex portion 2b are provided, and the concave portion 2a and the convex portion 2b have convex portions of the other cylindrical body (corresponding to 1A shown in FIG. 3) that are in contact with each other. The part and the recess are fitted and joined to each other.
Then, along the inner peripheral surface of the upper convex portion 2b, the groove 3 is formed over a half circumference.
Are formed.

In the groove 3 having a rectangular cross section formed along the inner peripheral surface of the above-mentioned convex portion 2b, an annular coupling body 5 having a restoring force in the radial direction with a part 4 missing as shown in FIG. It is designed to be closely fitted.

FIG. 3 is a perspective view showing an embodiment of the present invention in which two cylindrical bodies 1 and 1A are abutted and joined in the longitudinal direction, and the same reference numerals as those shown in FIGS. Indicates the same or similar parts.

In this embodiment, above the cylindrical body 1, the other cylindrical body 1A having the same shape is provided with the concave portion 2a of the cylindrical body 1.
The convex portion of the other cylindrical body 1A, and the convex portion 2b of the cylindrical body 1
The concave portions of the other cylindrical body 1A are joined so as to be fitted to each other, and the grooves 3 and 3A formed on the inner peripheral surfaces of the respective convex portions of both cylindrical bodies 1 and 1A are continuous. A groove is formed over the entire circumferential surface.

Then, in the groove having a rectangular cross section formed continuously over the entire circumference, the annular coupling body 5 made of an elastic body shown in FIG. The two cylinders 1 and 1A are closely fitted by a restoring force, and thereby the two cylindrical bodies 1 and 1A are fixedly joined to each other in the axial direction and the circumferential direction.

When performing the joining operation as shown in FIG. 3 by using the cylindrical body 1 shown in FIG. 1, the circumference of both cylindrical bodies to be joined is surrounded by a sleeve or a guide tube in a direction perpendicular to the axis or in the radial direction. It is necessary to protect from power.

FIG. 4 is a perspective view showing another embodiment of the present invention. In this embodiment, the contact end 7 of the cylindrical body 6 is
The concave portions 7a, 7b and the convex portions 7c, 7d are alternately arranged for each ¼ circle, and the groove 8 is formed along the inner peripheral surfaces of the both convex portions 7c, 7d.

FIG. 5 is a perspective view showing a state in which the other cylindrical body 6A having the same shape but above the cylindrical body 6 shown in FIG. The convex portion of the cylindrical body 6A and the convex portion of the cylindrical body 6 on the other cylindrical body 6A
The concave portions of are joined so as to be fitted to each other, and a restoring force in the radial direction is provided in a continuous groove formed along the inner peripheral surfaces of the convex portions of both the cylindrical bodies 6 and 6A. An annular coupling body 5 made of an elastic body is fitted into
Both cylindrical bodies 6 and 6A are fixed and joined.

FIG. 6 is a cross-sectional view perpendicular to the axis including AA 'at the joints of both the cylindrical bodies 6 and 6A of the embodiment shown in FIG. The coupling body 5 is fitted in the groove 8 formed along the inner peripheral surface of the convex portions 7c and 7d of the cylindrical bodies 6 and 6A, and the both cylindrical bodies are fixed by the restoring force in the radial direction,
Are joined. FIG. 7 is a perspective view showing still another embodiment of the present invention. In this embodiment, the abutting end portion 10 of the cylindrical body 9 has a concave portion 10a, 10b and a convex portion 10 for each 1/4 circle.
c and 10d are alternately arranged, and a groove 11 is formed along the outer peripheral surface of each of the convex portions 10c and 10d. FIG. 8 is a perspective view showing a state in which the other cylindrical body 9A having the same shape as that of the cylindrical body 9 shown in FIG. The concave portions of the cylindrical body 9A are joined to each other so as to be fitted to each other. An annular coupling body 5 made of an elastic body having a restoring force is fitted in, and both cylindrical bodies 9 and 9A are fixed and joined. FIG. 9 shows that the annular joined body 5 of the present invention is fitted into the grooves 8 and 8A formed on the inner peripheral surfaces of the cylindrical bodies 7 and 7A by the rod 12 which is separately prepared for pressing, and the two cylindrical bodies 7 and An example of joining 7A is shown. FIG. 10 shows a state in which the cylindrical body joining device of the present invention is used as a bushing fitted in a bolt hole that receives a load in the axial direction.

When the two cylindrical bodies are joined together, the annular joined body is fitted into the groove of one of the cylindrical bodies in advance,
It is also possible to join both cylinders only by the pushing operation.

According to this embodiment, since two concave portions and two convex portions are formed on the abutting surfaces of both the cylindrical bodies, fitting with respect to circumferential displacement and radial or longitudinal force is performed. The strength is higher than that of the embodiment shown in FIGS. As a result, a stronger fixed joint is obtained.

In both of the above-mentioned embodiments, the case where two cylindrical bodies are joined has been described. However, by forming the above-mentioned concave portions and convex portions on each abutting surface that abuts in the longitudinal direction, three or more cylindrical bodies are formed. It is possible to fix and join the cylindrical bodies.

Further, two or more sets of recesses and protrusions formed on each contact end may be provided. Further, since the cylindrical body according to the present invention can withstand loads in the circumferential direction and the axial direction, as shown in FIG. 10, it is widely used as a bushing fitted in a bolt hole that receives a load in the axial direction. It can be used.

[0024]

As described above, according to the present invention, in the first aspect of the invention, the abutting portions of two or more cylindrical bodies having the same diameter that are abutted and joined to each other in the longitudinal direction are circled respectively. Providing one or more sets of recesses and protrusions in the circumferential direction, forming a groove along the inner peripheral surface of the protrusion of one of the cylindrical bodies, so as to form a continuous groove in a state of being joined to each other, in the groove A cylindrical body of the same shape is formed by inserting an annular coupling body made of an elastic body that is partially missing and has a restoring force in the radial direction and fixing and joining two or more cylindrical bodies. A joining device for a cylindrical body is obtained which can be easily fixed and joined.

Further, in the invention of claim 2, each of the one or more sets of the concave portion and the convex portion provided at the abutting end portion of the cylindrical body is formed in a rectangular shape along the circumferential direction, so that the concave portion is formed. Thus, the joining device for the cylindrical body can be obtained in which the convex portion and the convex portion are engaged with each other and are not affected by the force in the rotational direction.

Furthermore, in the invention of claim 3, the groove formed along the inner peripheral surface of the convex portion of the cylindrical body has a rectangular cross-section, and the cross section of the annular coupling body fitted in the groove. By forming the shape substantially the same as that of the groove, it is possible to obtain the cylindrical body joining apparatus in which the joining of the cylindrical bodies is not broken by the force in the longitudinal direction.

Further, in the invention of claim 4, when the cylindrical body having each of the above effects is used as a bushing or the like fitted in a bolt hole which receives a load in the axial direction, the length of the bolt hole can be easily accommodated. A joining device for a cylindrical body can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cylindrical body showing an embodiment of the present invention.

FIG. 2 is a perspective view of an annular coupling body.

FIG. 3 is a perspective view showing an embodiment in which two cylindrical bodies of FIG. 1 are joined in the longitudinal direction.

FIG. 4 is a perspective view of a cylindrical body showing another embodiment of the present invention.

5 is a perspective view showing an embodiment in which two cylindrical bodies of FIG. 4 are joined in the longitudinal direction.

6 is an AA at the joint between the two cylinders shown in FIG.
FIG. 3 is a cross-sectional plan view taken along the line.

FIG. 7 is a perspective view showing still another embodiment of the present invention.

8 is a perspective view showing an embodiment in which the cylindrical bodies shown in FIG. 7 are joined in the longitudinal direction.

FIG. 9 is a view showing an embodiment for fitting the annular joining device of the present invention into the grooves formed on the inner peripheral surfaces of the joined cylindrical bodies.

FIG. 10 is a plan view showing an embodiment in which the cylindrical body joining device of the present invention is used as a bushing fitted in a bolt hole that receives a load in the axial direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 cylindrical body 1A cylindrical body 2 abutting end portion 2a concave portion 2b convex portion 3 groove 3A groove 4 missing portion 5 annular coupling body 6 cylindrical body 6A cylindrical body 7 abutting end portion 7a concave portion 7b concave portion 7c convex portion 7d convex portion 8 Groove 8A Groove 9 Cylindrical body 9A Cylindrical body 10 Abutting end 10a Recess 10b Recess 10c Recess 10c Convex 10d Convex 11 Groove 11A Groove 12 Rod

Claims (4)

[Claims] 1. Two members which are abutted and joined to each other in the longitudinal direction.
One or more sets of recesses and protrusions are provided in the circumferential direction at the abutting ends of cylinders having the same diameter or more, and the protrusions of one cylinder are fitted into the recesses of the other cylinder. And a groove that continuously passes through both the convex portions in the circumferential direction in a state where the convex portions of both cylinders are joined to each other is formed on at least one of the outer circumference or the inner circumference of the both convex portions. Then, the joining device for a cylindrical body is characterized in that an annular coupling body having a restoring force in a radial direction is fitted into the groove to fix and join two or more cylindrical bodies. 2. One or more sets of recesses and protrusions provided at the abutting end of the cylindrical body are formed in a rectangular shape along the circumferential direction, and the recesses and protrusions are engaged with each other. 2. It is not affected by the force in the rotating direction.
The cylindrical joining apparatus described. 3. The groove formed along the circumferential direction of the convex portion of the cylindrical body has a rectangular cross-sectional shape, the annular coupling body is fitted into the groove, and the cylindrical body is joined by the force in the longitudinal direction. The cylindrical body joining device according to claim 1 or 2, wherein the joining device is not solved. 4. The joining device for a cylindrical body according to claim 1, wherein the cylindrical body is used as a bushing fitted in a bolt hole that receives a load in the axial direction.