JPH07279988A - Coupling incorporating floating shaft - Google Patents

Abstract

PURPOSE:To remove a floating shaft while a pair of hubs attached to flanges at opposite ends of the floating shaft through the intermediary of leaf springs, are not removed from the output shaft of a drive device and the input shaft of a driven device. CONSTITUTION:In a coupling shaft 40, hubs 46, 46 are attache to flanges 42, 42 at opposite ends of a floating shaft through the intermediary of leaf springs 47 each having a plurality of spring pieces 59 which are arranged in a ring-like shape between the flanges at both ends of the floating shaft 43. Each of the spring pieces 59 is attached at one end to the flange by means of a flange bolt 48, and at the other end to the hub 46 by means of a hub bolt 50. The flange bolt 48 attaches the other end of the spring piece 59 to the flange without piercing through the hub 46. Accordingly, the floating shaft can be removed between a pair of the hubs without enlarging the space between the latter only by removing the hub bolts 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a floating shaft connected by a leaf spring and a pair of hubs, and the floating shaft can be removed while the pair of hubs are attached to an output shaft of a drive unit and an input shaft of a driven unit. Regarding coupling.

[0002]

2. Description of the Related Art Conventionally, a coupling having a floating shaft has a structure as shown in FIG.
This coupling 10 has a collar 12 on both ends of a shaft member 11,
A floating shaft 13 on which 12 is formed, a pair of hubs 16 and 16 attached to an output shaft 14 of a drive device and an input shaft 15 of a driven device, and a ring-shaped leaf spring 17 that connects the flange 12 and the hub 16. , Flange bolts and nuts 18 for alternately mounting the leaf springs 17 on the collar 12 and the hub 16,
19 and hub bolts and nuts 20 and 21.

A retaining ring 22 and a washer 23 are loosely fitted on the flange bolts and nuts 18 and 19 and the hub bolts and nuts 20 and 21, respectively. Bolts and nuts 18, 20,
When 19 and 21 are tightened, the periphery of the leaf spring 17 is alternately attached to the collar 12 and the hub 16. The holding ring 22 is inserted into holes 24 and 25 formed in the flange 12 and the hub 16 and having a diameter larger than that of the holding ring 22.

Instead of the flange bolts and nuts 18 and 19 and the hub bolts and nuts 20 and 21, bolts 26 screwed into the flange 12 and the hub 16 as shown in FIG.
27 may be used.

[0005]

However, such a coupling has the following problems. (1) To remove the floating shaft 13 while the hubs 16 and 16 are attached to the output shaft 14 and the input shaft 15, the flange bolts 18 and 26 or the hub bolts 20 and 2 are removed.
Even if 7 is removed, the floating shaft 13 cannot be removed because the remaining bolt penetrates the collar or hub. Therefore, all bolts 18, 20, 2
The floating shaft 13 cannot be removed from between the pair of hubs 16 and 16 unless 6 and 27 are removed. (2) The boss 28 of the hub 16 has a diameter of the bolt 2
The diameters of the holes 29 and 30 into which the output shaft 14 and the input shaft 15 are inserted cannot be increased because the diameters of the heads of 0 and 26 and the nut 19 are limited.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a flange bolt is attached to the flanges at both ends of a floating shaft, and a hub bolt is attached to a hub facing the flange. In the coupling including a floating shaft having a leaf spring that connects the flange and the hub, the leaf springs are arranged in a ring shape between the flanges at both ends of the floating shaft and around the floating shaft. With a coupling having a plurality of spring pieces, one end of each of the spring pieces is attached to the flange by a flange bolt, and the other end is attached to the hub by a hub bolt that penetrates the flange. Solved.

[0007]

The rotating force applied to one hub is transmitted to the other hub via the hub bolt, the leaf spring, the flange bolt, the floating shaft, the flange bolt, the leaf spring, and the hub bolt. The leaf spring is provided between the collars at both ends of the floating shaft and around the floating shaft. For this reason, the hub bolt penetrates the flange and attaches one end of the spring piece to the hub. Further, the flange bolt has the other end of the spring piece attached to the flange without penetrating the hub. Therefore, the floating shaft can be removed from between the hubs only by pulling out the hub bolts without increasing the distance between the pair of hubs.

[0008]

Embodiments of the present invention will be described below with reference to FIGS. The coupling 40 is a floating shaft 4 in which collars 42, 42 are formed on both ends of a shaft member 41.
3, a pair of hubs 46, 46 attached to the output shaft 44 of the drive device and the input shaft 45 of the driven device, a leaf spring 47 connecting the collar 42 and the hub 46, and the leaf spring 47 alternately. It has a flange bolt 48 attached to the hub 46 and a hub bolt 50.

The leaf spring 47 is composed of a plurality of spring pieces 59. Each spring piece 59 is formed in an arc shape. One end of each spring piece 59 is attached to the flange 42 by the flange bolt 48, and the other end thereof is a hub bolt 50 that penetrates the flange 42.
Attached to the hub 46 by. Bolt for bolt 4
8 is the conventional flange bolts 18 and 26 (see FIGS. 5 and 6)
Unlike, it is screwed into the collar 42 without penetrating the hub 46. Therefore, the spring pieces 59 are arranged in a ring shape between the collars 42, 42 at both ends of the floating shaft 43 and around the floating shaft 43.

The other end of the spring piece 59 is sandwiched between the pressing ring 52 and the washer 53. Presser ring 52 on the collar 42
Is formed with a hole 54. The diameter of this hole 54 is set larger than the diameter of the pressing ring 52.

The rotational force applied to one hub 46 is the hub bolt 50, the leaf spring 47, the flange bolt 48, the floating shaft 43, the flange bolt 48, and the leaf spring 47.
It is transmitted to the other hub 46 via the hub bolt 50.

To remove the floating shaft 43, the hub bolt 50 can be removed. That is, the floating shaft 43 keeps the pair of hubs 46, 46 attached to the output shaft 44 of the drive device and the input shaft 45 of the driven device, while the pair of hubs 46, 4 remains in place.
It can be removed from between the hubs 46, 46 without widening the space of 6.

Since the head of the bolt and the nut are not provided on the boss 58 side of the hub 46, the diameter of the boss 58 is set large. Along with this, the output shaft 44 and the input shaft 45
The diameters of the holes 60 and 61 into which is inserted are also set to be large.
The floating shaft 43 and the hub 46 are connected by a total of four bolts including two flange bolts 48 and two hub bolts 50, but the number of bolts is not limited to this, and the total number is not limited to this. It may be six or eight in total.

[0014]

The coupling of the present invention has the following effects because the leaf spring is provided between the flanges at both ends of the floating shaft and around the floating shaft. (1) The flange bolt is screwed into the flange without penetrating the hub, and the floating shaft can be removed from between the hubs only by pulling out the hub bolt without increasing the gap between the hubs. (2) Since the hub of the hub is not equipped with a bolt head or nut on the boss side, the diameter of the boss must be increased and the hub hole formed to receive the drive unit, the drive output shaft of the driven unit, and the input shaft must be The diameter can be increased.

[Brief description of drawings]

FIG. 1 is a front view of a coupling according to an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a sectional view taken along the line 3-3 in FIG.

4 is a partial exploded perspective view of the coupling of FIG.

5 is a cross-sectional view of a conventional coupling, which corresponds to FIG.

FIG. 6 is a partial cross-sectional view of another conventional coupling.

[Explanation of symbols]

40 Coupling 42 Tsubo 46 Hub 47 Leaf Spring 48 Bolt Bolt 50 Hub Bolt 59 Spring Piece

Claims (1)

[Claims] 1. A collar bolt attached to the collars at both ends of a floating shaft, and a hub bolt attached to a hub facing the collar, the hub bolts being attached to the collar and the hub. In a coupling including a floating shaft having a leaf spring connecting the leaf springs, the leaf spring has a plurality of spring pieces arranged in a ring shape between the collars at both ends of the floating shaft and around the floating shaft, A coupling having a floating shaft, wherein one end of each spring piece is attached to the flange by a flange bolt and the other end is attached to the hub by a hub bolt that penetrates the flange.