JPH09290U - Detachable coupling - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a compact coupling that can be easily attached and detached. One member (1) having an oval cross section,
The other member 10 having a recess 11 having a shape adapted to the member 1, the engagement holes 2 and 12 provided in the shaft centers of the respective members 1 and 10, and the engagement holes 2 and 12 and the drive. Axis A
And the set screws 3a and 13a for fixing the driven shaft B to form a coupling. The cross-sectional shape of the one member 1 may be elliptical or regular polygonal with rounded corners.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a coupling that detachably connects a plurality of driven shafts and drive shafts, for which function selection or cleaning is always required.

[0002]

[Prior art]

 When connecting the drive shaft and the driven shaft, even if there is some deviation in the rotating shaft core, the rotation speed does not become uneven, power can be transmitted reliably, and the connecting means can be easily attached and detached. Is desirable.

For example, in a normal sleeve coupling, it is difficult to align the shaft centers, the sleeve is easily damaged, and further, it is necessary to provide a rotation stopping means, and the alignment is not easy.

Therefore, a pair of discs provided with concave and convex portions that fit with each other is detachably fixed to their respective shafts, and capping for transmitting a rotational force by engaging the concave and convex portions of the discs with each other is generally used. There is.

However, since this coupling is made of rubber, it has low wear resistance, and it is difficult to align it at the time of mounting, and there is a limit to the transmission torque per unit area.

[0006] In addition, although there is also one in which locking portions are provided at both ends of the bellows and these locking portions are fixed to their respective shafts, there is a problem in durability and ease of mounting similarly to the above.

[0007]

[Issues of the invention]

 Therefore, an object of the present invention is to provide a coupling that can reliably and evenly transmit a rotational force, is easy to mount, and has excellent durability.

[0008]

[Means for solving the problem]

 In order to solve the above-mentioned problems, in the present invention, one hard member having an oval or elliptical cross section and a rounded edge portion of the end face, and a recess having a shape that fits exactly to this member are provided. The other hard member, the engaging hole provided through the axial center of each member, and the means for fixing the engaging hole and the drive shaft or the driven shaft constitute the capping.

[0009]

[Action]

 Since one member of the coupling is oval, etc., and the other member is provided with a recess that fits this shape, it is extremely easy to connect one member to the other, Also, by slightly turning one member, alignment can be easily performed.

Furthermore, since one member is inserted into the other member and coupled, the drive shaft and the driven shaft can be brought as close as possible, the coupling can be made compact, and the durability of the coupling can be improved. be able to.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, one hard member 1 of the coupling has an oval cross section and is provided with an engagement hole 2 which penetrates the center to insert a drive shaft. A screw hole 3 is provided which communicates with the engagement hole 2 from the outer periphery of the. A set screw is screwed into the screw hole 3 to fix the member 1 to the drive shaft. If the edge portion 4 of the end face of the member 1 is rounded over the entire circumference as shown in FIG. 1, it can be easily joined to the other member 10 which will be described later.

As shown in FIGS. 3 and 4, the other rigid member 10 of the coupling has an oval recess 11 which fits snugly into said one member 1 and extends through the center of the driven shaft. An engaging hole 12 to be inserted is provided, and a screw hole 13 reaching from the outer periphery of the member 10 to the engaging hole 12 is provided. A set screw is screwed into the screw hole 13 to fix the member 10 to the driven shaft.

As shown in the drawing, a circumferential groove 14 is provided on the inner circumference of the oval recess 11 (a groove 14 concentric with the outer circumference of the member 10 can be easily formed), and the maximum groove 14 When the O-ring 15 having the same thickness as the depth is fitted, the O-ring 15 slightly protrudes in a lunar shape from the inner peripheral surface of the oval recess 14. Therefore, as shown in FIG. 5, when one member 1 is fitted into the other member 10, a part of the inner circumference of the O-ring 15 comes into contact with the outer circumference of the one member 1, so that the Chattering can be prevented. In FIG. 5, reference numeral A is a drive shaft fixed in the engagement hole 2, B is a driven shaft fixed in the engagement hole 12, and 3a and 13a are set screws.

The shape of the recess 11 of the one member 1 and the other member 10 is not limited to an elliptical shape and may be an elliptical shape.

[0016]

【effect】

 According to this invention, as described above, one hard member of the coupling has an oval or elliptical shape with the edge portion of the end face rounded, and the other hard member exactly fits the shape. Since a recess is provided and one member is fitted into this recess to connect both members, and the drive shaft or the driven shaft is attached to the engagement hole penetrating the center of both members, one hand is used. It can be easily fitted by pressing the held driven shaft side member against the drive shaft side member and turning it lightly to the left and right, and it is not necessary to rotate the drive shaft or the driven shaft, and then the driven shaft side member It is sufficient to fix the member, and the thickness of the rubber material can be omitted as compared with the case where the rubber material is used, so that the coupling becomes compact and the durability is improved.

Further, by attaching the O-ring to the inside of the recess and projecting a part of the O-ring from the inner peripheral surface of the recess, chattering of both coupling members can be prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of one member of a coupling.

FIG. 2 is a front view of the above.

FIG. 3 is a longitudinal sectional view of the other member of the coupling.

FIG. 4 is a front view of the above.

FIG. 5 is a vertical cross-sectional view of mounting the coupling.

[Explanation of symbols]

 A drive shaft B driven shaft 1 one member of coupling 2 engaging hole 3 screw hole 4 edge portion 10 other member of coupling 11 recess 12 engaging hole 13 screw hole 14 circumferential groove 15 O-ring

Claims (2)

[Utility model registration claims] 1. A hard member having an oval or elliptical cross section and having rounded edges on the end face, and another hard member having a recess shaped to fit the member.
A detachable coupling comprising an engagement hole for penetrating the shaft center of each member with a drive shaft or a driven shaft, and a means for fixing the engagement hole and the drive shaft or the driven shaft. 2. An inner circumference of the recess of the other member is provided with a circumferential groove, and an O-ring having a thickness substantially equal to the maximum depth of the circumferential groove is fitted into the circumferential groove. The removable coupling according to claim 1, wherein a part of the O-ring is projected in an arc shape from the surface.