JP2523394B2 - Flexible joint for torque transmission with guide ring - Google Patents

Description

The present invention relates to a torque transmission flexible joint provided with a central member with a guide ring.

Conventionally, in a flexible joint for torque transmission as disclosed in, for example, U.S. Pat.No. 4055966, the flexure member and the corresponding hub are aligned to guarantee the balance of the hub centering in the mounted state. To do this, a guide ring is used. The guarantee of balance in this case is to form a precise finishing surface along the radial direction on both the hub and the guide ring, and fix the hub and the guide ring so that these finishing surfaces are in close contact with each other in the axial direction. Be implemented.

By the way, in this kind of flexible joint for torque transmission which is usually used under high speed rotation, it is most important to ensure the balance of the shaft centering, and for that purpose, it is easy to assemble and disassemble such joint. It is required that the alignment state between the guide ring and the hub after assembling can be surely maintained, but the above-mentioned prior art cannot sufficiently satisfy such a requirement.

INDUSTRIAL APPLICABILITY The present invention allows the guide ring and the hub to be aligned with each other very easily and accurately at the time of assembly and disassembly, and also ensures the balance guarantee after the assembly. The purpose is to provide a fitting.

A torque transmission flexible joint with a guide ring according to the present invention has a first flange extending outward in the radial direction,
A hub having a plurality of fixing holes axially pierced in the first flange and spaced from each other in the circumferential direction, and a plurality of fixing holes for the first flange arranged adjacent to the hub. A guide ring having a plurality of fixing holes which correspond to the holes and are spaced apart along the circumferential direction and penetrate through in the axial direction, a central member having a second flange extending outward in the radial direction, and the guide ring Between the guide ring and the second flange of the central member.
In a flexible joint for torque transmission with a guide ring, the flexible joint having a flexible member connected to each of the flanges, the end face of the first flange of the hub in the axial direction and the end face of the guide ring in the axial direction adjacent to the hub. An annular uneven portion that engages with each other in the axial direction is formed in part, and the mutual engaging surfaces of these annular uneven portions are each formed into a precision finished surface.

The construction and operation of the torque transmission flexible joint with the guide ring according to the present invention will become more apparent from the detailed description of the preferred embodiment with reference to the accompanying drawings.

FIG. 1 shows a flexible joint 10 for torque transmission which is an embodiment of the present invention. The coupling 10 comprises a hub 12 having a first flange 14 extending radially outwardly,
A precision finished surface 15 is formed along the circumferential direction on the axial end surface of the first flange 14. Further, the hub 12 is formed with a central hole 18 for connecting the joint 10 to a shaft (not shown). In addition, the first flange 14 of the hub 12 has an unthreaded fixing hole 16 and a threaded hole 17 that penetrate the flange 14 in the axial direction for the following reason.
And a plurality of and are alternately provided in the circumferential direction. 20 is a guide ring, and the guide ring 20 is the hub 12
It has a precision finishing surface 21 which is paired with the precision finishing surface 15 and which is oriented in the radial direction so as to engage with the precision finishing surface 15 in the axial direction. An engagement surface of an annular uneven portion that engages with each other is formed.

Then, the guide ring 20 held by the central member 30 via the flexible member 40 and the hub 12 are aligned with each other. Further, the guide ring 20 is provided with a threaded hole 22 for fixing which extends in the axial direction, so that the axis of the threaded hole 22 can be fixed to the hub 12 when the joint is assembled. Coincides with the axis of the unthreaded hole 16 provided in the first flange 14 of the hub 12.

In the illustrated embodiment, the axial end portion 30a of the central member 30 is located so as to project inward from the innermost peripheral end portion 20a of the guide ring 20, and the axial ends of the guide ring 20 and the central member 30 are located. A buffer ring 24 made of non-metal is arranged between the portion 30a and the portion 30a. The buffer ring 24 plays a role of a cushion against the movement of the central member 30 in the radial direction in the event that the flexible member 40 is damaged.

The central member 30 has a second flange 31 extending outward in the radial direction. The second flange 31 has a plurality of holes 32 axially aligned with the threaded holes 22 of the guide ring 20. It is provided separately. In the space between the second flange 31 of the central member 30 and the guide ring 20, the flexible member for the joint
40 is arranged, and the flexible member 40 is composed of a plurality of flexible disks 41 as shown. The plurality of flexible disks 41 are integrally held in a laminated state by bolts fixed to the main body, and each bolt is provided with holes 43 spaced apart along the circumferential direction of the flexible disk 41.
Passed inside.

Further, the bending member 40 is a bolt for driving force transmission shown in the figure.
The second flange 31 of the central member 30 and the guide ring 20 are respectively connected by a known method such as 46 and nut 48.
Reference numeral 45 denotes a spacer, which positions the flexible member 40 approximately at the center between the second flange 31 of the central member 30 and the guide ring 20. In this way, the flexible joint 10 that absorbs the alignment error that occurs between the hub 12 and the central member 30 is configured.

When assembling this joint 10, insert the self-locking hexagon cap screw 50 into the unthreaded hole 16 provided in the first flange 14 of the hub 12 and engage with the threaded hole 22 of the guide ring 20. And tighten it tightly. At this time, the engaging surface formed by the precision finishing surface of the first flange 14 of the hub 12 and the guide ring 20.
15, 15 axially engage one another so that the flexure 40 bolted to the guide ring 20 and the hub 12 are in precise alignment. This state corresponds to the position where the hexagon cap screw 50 is used during normal operation of the joint.

On the other hand, the joint 10 can be disassembled as necessary by using the same hexagonal cap screw 50 used for assembling the joint 10. That is, at the time of disassembly, the cap screw 50 can be easily loosened, but the engagement surfaces 15 and 21 made of precision finished surfaces are closely engaged with each other, so that the guide ring 20 cannot be easily removed from the hub 12. Therefore, in order to remove the guide ring 20, remove the cap screw 50
Is inserted through the hole 32 formed in the second flange 31 of the central member 30, and is meshed with the threaded hole 22 of the guide ring 20. If the captive screw 50 is further tightened from this state, the flexible member
40 is compressed and the guide ring 20 is torn off one hub 12 of the coupling 10. The guide ring 20 of the hub 12 on the other side of the joint 10 can also be inserted into the threaded hole 17 of the hub 12 by inserting the hexagon cap screw 50, screwed and then peeled off from the hub 12, and as a result, the joint 10 is completely decomposed.

As described above, in the joint of the above-mentioned embodiment, if only the wrench which can be easily obtained is used, both assembling and disassembling can be performed by using the same cap screw 50. Further, since it is not necessary to apply peeling or other excessive force when disassembling the joint 10, it is possible to damage the precision finish engaging surfaces 15 and 21 formed on the first flange 14 of the hub 12 and the guide ring 20. Sex also decreases.

In the embodiment described above, the engaging surfaces 15 and 21 of the annular concave and convex portions which are formed on a part of the end surface of the first flange 14 of the hub 12 and the end surface of the guide ring 20 and engage with each other in the axial direction are provided. Hub 1
The second flange 14 is formed at the position on the outer peripheral side of the first flange 14, but as shown in FIG. 3, at the position on the inner peripheral side of the first flange 14 of the hub 12, It is obvious that the same effect can be obtained even when the end face and the end face of the guide ring 20 are formed in a part.

Further, the description has been given above along the preferred embodiment of the present invention, but it goes without saying that various changes and modifications can be made without departing from the application of the present invention limited to the scope of the claims. Is.

As described above, according to the present invention, a part of the axial end surface of the first flange of the hub and the axial end surface of the guide ring adjacent to the hub are annularly engaged with each other in the axial direction. Since the concavo-convex portion is formed and the mutual engaging surfaces of these annular concavo-convex portions are formed on the precision finished surfaces respectively, when assembling the joint by fixing the hub and the guide ring, Using both as a guide, both precision finishing engagement surfaces can be smoothly engaged with each other, and both the hub and the guide ring can be easily and accurately aligned, and
The guarantee of the shaft centering balance after assembly is ensured, and the function of the flexible joint can be ensured.

[Brief description of drawings]

FIG. 1 is a partially broken perspective view of a joint constructed according to the principle of the present invention, FIG. 2 is a sectional view of a double-type flexible joint to which the present invention is applied, and FIG. 3 is a sectional view showing another embodiment. . (Explanation of symbols) 10 …… Flexible joint, 12 …… Hub, 14 …… First flange, 15 …… Precision finishing surface (engaging surface), 18 …… Center hole,
20 …… Guide ring, 21 …… Precision finishing surface (engaging surface), 30
...... Center member, 31 ...... Second flange, 40 ...... Flexible member, 41 ...... Flexible disk.

Claims (3)

(57) [Claims] 1. A first flange (1) extending outward in the radial direction.
4), a hub (12) having a plurality of fixing holes (16) in the first flange (14) that are spaced apart along the circumferential direction and penetrate axially, and this hub (12) And a plurality of fixing holes (16) of the first flange (14) arranged adjacent to
Corresponding to the guide ring (20) having a plurality of fixing holes (22) spaced apart along the circumferential direction and penetrating in the axial direction.
A central member (30) having a second flange (31) extending radially outward, and arranged between the guide ring (20) and the second flange (31) of the central member (30). hand,
The flexible members (4) respectively coupled to the guide ring (20) and the second flange (31) of the central member (30).
0) in the flexible joint for torque transmission with a guide ring, the axial end surface of the first flange (14) of the hub (12) and the guide ring (20) adjacent to the hub (12). An annular concavo-convex portion that engages with each other in the axial direction is formed on a part of the end face in the axial direction, and the mutual engaging surfaces (15) and (21) of these annular concavo-convex portions are precisely finished. A flexible joint for torque transmission with a guide ring, which is formed on the surface. 2. The hub (12) is provided with an annular concavo-convex portion for mutual engagement formed on a part of an axial end surface of the first flange (14) of the hub (12) and the guide ring (20). First of
The flexible joint for torque transmission with a guide ring according to claim 1, wherein the flexible joint is formed at a position on the outer peripheral side of the flange (14). 3. The hub (12) has an annular concave and convex portion for mutual engagement formed on a part of an axial end surface of the first flange (14) of the hub (12) and the guide ring (20). First of
The flexible joint for torque transmission with a guide ring according to claim 1, wherein the flexible joint is formed at a position on the inner peripheral side of the flange (14).