JPH0710097Y2 - Shaft coupling - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a shaft coupling that transmits both torque and tensile force.

[Prior Art] When transmitting a tensile force by moving a rotationally driven shaft in the axial direction, conventionally, as shown in FIG. 3, flanges c and d are fixed to the connection side ends of the shafts a and b. , Bolts e are inserted into the holes formed in the flanges c and d for connection.

[Problems to be solved by the invention] However, when the connection between the axes a and b is released, the bolt e
Each one had to be removed, and the work was troublesome and the work in the narrow space was difficult.

An object of the present invention is to ensure that both torque transmission and tensile force transmission can be performed, and that attachment and detachment can be easily performed.

[Means for Solving the Problems] A male part having a square cross section is provided at one end of one shaft, and a disc-shaped flange is attached to the base of the male part and a cap nut having an internal thread on the inner circumference is attached to the flange. A female part having a rectangular cross section which is fitted and which has an axial length substantially equal to the axial length of the male part and which can be fitted to the male part, is provided at the end of the other shaft. A shaft coupling is characterized in that a cylindrical body having a male screw capable of being screwed into the female portion of the cap nut is attached to the outer periphery of the portion.

[Operation] By fitting the square male part of one shaft into the female part of the other shaft, forward and reverse torque transmission is possible.

By engaging the female screw of the cap nut of one shaft with the male screw of the other shaft, the tensile force can be transmitted.

By rotating the cap nut and moving one of the shafts in the axial direction, the shafts can be easily connected and disconnected.

Since the axial length of the female portion having a square cross section that can be fitted to the male portion is substantially equal to the axial length of the male portion having a square cross section, the portion to be processed with the rectangular cross section becomes short, and therefore the entire axial joint Easy to process.

When the cylinders are screwed into the cap nut and the shafts are connected, the contact between the disc-shaped flange and the end surface of the cylinder is large, so the connection will be connected even if an axial compression force is applied. The strength of the part is relatively stable.

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

1 and 2 show an embodiment of the present invention, in which the outer circumference of the end of one cylindrical shaft 1 is cut out, for example, in a hexagonal cross section to form a male part 2, and the base of the male part 2 is formed. Disk-shaped flange 3
And a cap nut 5 having an internal thread 4 on its inner circumference is fitted on the flange 3.

At the end of the other cylindrical shaft 6, there is a female part 7 having a hexagonal cross-section that can be fitted in close contact with the male part 2 at the inner periphery, and the female screw 4 of the cap nut 5 at the outer periphery. A cylinder body 9 having a male screw 8 that can be screwed is attached. In the figure, 10 and 11 are through holes, and 12 is an inner flange of the cap nut 5.

Since the shaft 1 is configured as described above, for example, one shaft 1 is moved in the axial direction, and the male part 2 having a hexagonal cross section of the shaft 1 is fitted into the female part 7 having a hexagonal cross section of the other shaft 6. As a result, the forward and reverse torques are reliably transmitted.

Then, the female screw 4 of the cap nut 5 is screwed into the male screw 8 of the cylindrical body 9, whereby the tensile force is transmitted through the cylindrical body 9, the cap nut 5, the inner flange 12 and the flange 3 of the shaft 1.

Therefore, by rotating one of the shafts 1 and 6, the other shaft 6 and 1 is rotated, and when one of the shafts 1 and 6 is pulled in the axial direction, the other shafts 6 and 1 also move in the same direction. Moving.

By unscrewing the cap nut 5 and moving one of the shafts 1 and 6 in the axial direction, the male part 2 of the one shaft 1 and the female part 7 of the other shaft 6 are disengaged, and the shaft 1 , 6 can be easily disconnected.

Also, the axial length of the female part with a square cross section that can be fitted to the male part is
Since the axial length of the male part having a rectangular cross section is substantially equal to that of the male part having a rectangular cross section, the portion to be processed having a rectangular cross section is shortened, so that the entire shaft coupling can be easily processed.

Furthermore, when the shafts are connected by screwing the tubular body into the cap nut, the contact portion between the disc-shaped flange and the end surface of the tubular body is large, so that an axial compressive force is applied to the connecting portion. Also, the strength of the connecting portion is relatively stable.

The shaft joint of the present invention is not limited to the above-mentioned embodiment, the shaft does not have to be hollow, and the male part and the female part are similar in shape when the end faces are square and the sizes are close. Needless to say, various modifications can be made without departing from the gist of the present invention, such as a shape other than a hexagon.

[Effects of the Invention] As described above, according to the shaft coupling of the present invention, various excellent effects as described below can be obtained.

(I) Since the square male portion is provided at one shaft end and the female portion is provided at the other shaft end for fitting, the forward rotation torque and the reverse rotation torque can be reliably transmitted.

(II) Since a cap nut is provided at one shaft end and a male screw is provided at the other shaft end so that they can be screwed together, the tensile force of either shaft can be reliably transmitted to the other shaft. .

(III) Rotation of the cap nut and movement of either shaft in the axial direction allow easy connection and disconnection of the shafts.

(IV) Since the axial length of the female portion having a square cross-section that can be fitted to the male portion is substantially equal to the axial length of the male portion having a square cross-section, the portion to be processed with the rectangular cross-section becomes shorter, and therefore The entire joint can be easily processed.

(V) When the cylinders are screwed into the cap nuts and the shafts are connected to each other, since the contact portion between the disk-shaped flange and the end surface of the cylinder is large, an axial compressive force is applied to the connection portion. However, the strength of the connecting portion is relatively stable.

[Brief description of drawings]

1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view of FIG.
II-II direction arrow view, FIG. 3 is a side view which shows an example of the conventional shaft coupling. In the figure, 1 and 6 are shafts, 2 is a male part, 3 is a flange, 4 is a female screw, 5 is a cap nut, 7 is a female part, and 8 is a male screw.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Kiyoshi Kawasaki 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Takaaki Fukumoto 1-6-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp. (72) Inventor Hiroyuki Yamashita 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp. (72) Toshiaki Uehara 13 Showa-cho, Minato-ku, Nagoya, Aichi Prefecture Ishikawajima Harima Heavy Industries Co., Ltd. Nagoya Plant (72) Inventor Yoichi Tanaka 13 Showa-machi, Minato-ku, Aichi Prefecture, Ishikawajima Luirek Giken Co., Ltd. (56) Bibliographic data Sho 58-40370 (JP, U) Actual 53-122546 ( P, U) Tokuoyake Akira 48-14098 (JP, B1) real public Akira 26-13678 (JP, Y1)

Claims (1)

[Scope of utility model registration request] 1. A male part having a square cross section is provided at one end of one shaft,
A disc-shaped flange is attached to the base portion of the male portion, and a cap nut having an internal thread is fitted to the inner periphery of the flange,
Further, at the end of the other shaft, there is a female part having a square cross section which is approximately equal to the axial length of the male part and which can be fitted to the male part, and the outer periphery of the female part is provided. A shaft coupling, wherein a cylindrical body having a male screw that can be screwed into the female portion of the cap nut is attached.