JP2001173671A - Link type coupling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a link coupling precisely operable over a long period with high precision, requiring no maintenance. SOLUTION: To each pin hole provided on both ends of a plurality of links, a thin plate laminated dynamic pressure bearing having pins engageable with the respective pin holes slidably fitted thereto is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft coupling mounted between a drive shaft and a driven shaft, and more particularly, to transmitting power while permitting displacement of the shaft center between the drive shaft and the driven shaft. The present invention relates to an improved link type shaft coupling that can be used.

[0002]

2. Description of the Related Art A link type joint is a type of universal joint attached between a drive shaft and a driven shaft, and is known to be capable of moving the shaft up and down, left and right even during rotation. FIGS. 7 to 11 show an example of a conventional link type shaft coupling.
This will be described with reference to FIG. FIG. 7 is a perspective view of an example of a conventional link type shaft coupling. FIG. 8A is a front view of an example of a conventional link type joint, and FIG. 8B is a right side view of the link type joint shown in FIG. 8A. FIG. 9A shows FIG.
FIG. 9B is a partial cross-sectional view showing a portion A of FIG.
It is a perspective view which shows the conventional link made of oil-impregnated sinter. FIG.
It is a perspective view which shows the correspondence of the pin and pin hole of a conventional example of a link type coupling. FIG. 11 is an explanatory diagram showing the operation principle of the link type shaft coupling.

S and S 'are shaft cores, 1 and 1' are end disks, 2 is a center disk, 4A to 4F and 104A are links, 5A to 5L are pins, 6A to 6L, 106A and 106D are pin holes. It is. The link type shaft coupling is shown in FIGS. 7, 8 (a) and 8 (b).
As shown in FIG. 2, an end disk 1, 1 'attached to a drive shaft or a driven shaft, a center disk 2 disposed between two end disks 1, 1', and among the three disks, A plurality of links 4A to 4F are provided between two adjacent disks.

As shown in FIGS. 9A and 10, a needle bearing 54 is generally provided with pin holes 6A to 6L in the links 4A to 4F, as shown in FIGS. Each disk 1, 2, 1 '
The rotation between the pins 5A to 5L fixed to the link and the link is smooth. However, FIG. 10 does not show what is attached to the pin holes 6A to 6L of the needle bearing 54 and the like.

[0005] In a conventional link type shaft coupling used in a small space, as shown in FIG.
The needle bearings 54 and the like are not fitted into the pin holes 106A and 106D of the link, and the link is made of oil-impregnated sintered material, so that the rotation between the pins 5A to 5L fixed to the disks 1, 2, and 1 'is smooth. . The operation principle of power transmission of the link type shaft coupling will be described below with reference to FIG.

In the link-type shaft coupling, a plurality of links are rotatably arranged on the circumference of the same diameter between two adjacent disks, and each of the disks is also freely rotatable. If the drive-side end disk 1 rotates α around the point O and the pins 5A, 5B, and 5C move to the positions of 5AA, 5BB, and 5CC, respectively, the lengths of the links 4A, 4B, and 4C do not change. , The pins 5D, 5E and 5F of the center disk 2
Compressive force or tensile force acts, 5DD, 5EE, 5F respectively
Move to position F.

[0007] A quadrilateral connecting the origins O, O 'of the disks before the movement and the positions of the pins 5A, 5D, and the origins O, O', 5AA, 5DD of the disks after the movement.
Is a parallelogram, the rotation angle α of the center disk 2 about the origin O ′ of the pin 5D on the center disk 2 is rotated about the origin O of the pin 5A on the drive-side end disk 1. Becomes equal to the angle α. Other links
The same applies to 4B and 4C.
Rotates the same as the drive-side end disk 1. Also, the center disk 2 and the driven end disk 1 ′
The same applies to the above.

As explained above, the link type shaft coupling is
The rotational force can be transmitted while allowing the deviation between the shaft centers. However, the conventional link type coupling using a link in which a needle bearing is fitted has a problem that the cost of the needle bearing is high and that maintenance such as periodically supplying grease to the needle bearing is required. Was.

Also, in the conventional link type shaft coupling using an oil-impregnated sintered link having a pin hole, the precision of the pin hole is inferior to that of a needle bearing or the like. There was a problem that there was concern about durability.

[0010]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a link shaft coupling which does not require maintenance and which operates with high accuracy and long-term accuracy. To provide.

[0011]

Means for Solving the Problems The inventors of the present invention have made a circular lamination of annular thin plates in the thickness direction in which pins engaging with respective pin holes are slidably fitted in the respective pin holes. By mounting an annular thin-plate laminated dynamic pressure bearing (hereinafter, referred to as a thin-plate laminated dynamic pressure bearing) having an annular thin-plate laminated member and a lubricant, a rotational force can be transmitted while permitting displacement between shaft centers. The present invention has been completed by providing an accurate link type shaft coupling.

According to the first aspect of the present invention, a total of three end disks mounted on the drive shaft side, an end disk mounted on the driven shaft side, and a center disk disposed between the two end disks. A disk and a plurality of pins arranged between two adjacent disks of the three disks and fixed to one side of the two adjacent disks, and pin holes provided at one end of each link. And a plurality of links each of which is engaged with a plurality of pins fixed to the other side of two adjacent disks and a pin hole provided at the other end of each link. In the link-type shaft coupling, a thin-plate laminated hydrodynamic bearing in which pins engaging with the respective pin holes are slidably fitted to respective pin holes provided at both ends of the plurality of links is mounted. Link type shaft joint It is.

According to a second aspect of the present invention, there are provided a total of three end disks mounted on the drive shaft side, an end disk mounted on the driven shaft side, and a center disk disposed between the two end disks. A disk and pins fixed to one end of each link are respectively disposed between two adjacent disks of the three disks, and are provided in a plurality of pin holes provided on one side of the two adjacent disks. And a plurality of links each having a pin fixed to the other end of each link engaged with a plurality of pin holes provided on the other side of two adjacent disks. In the link-type shaft coupling, a thin-plate laminated hydrodynamic bearing in which a plurality of pin holes provided in each of the three disks are slidably fitted with pins engaging with the respective pin holes is mounted. Characteristic phosphorus An expression joint.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A link type shaft coupling according to an embodiment of the present invention will be described below in detail with reference to the drawings. First, a link-type shaft coupling according to a first embodiment will be described with reference to FIGS. FIG. 1A is a front view showing a link type joint according to a first embodiment of the present invention, and FIG. 1B is a right side view of the link type joint shown in FIG. FIG. FIG. 2 is a perspective view showing the correspondence between the pins of the link-type shaft coupling according to the first embodiment of the present invention and the thin-plate laminated dynamic pressure bearings. FIG. 3A is a perspective view showing the structure of a thin-plate laminated hydrodynamic bearing used in the present invention.
FIG. 3B is a plan view of the shaft guide shown in FIG.
FIG. 3C is a partial cross-sectional view illustrating the operation of the thin-plate laminated hydrodynamic bearing.

S and S 'are the shaft cores, 11 and 11' are the end disks on the drive shaft side and the driven shaft side, 12 is the center disk, 14A, 14B, 14C and 14D, 14E, 14F.
Are links, 13A, 13B, 13C and 13D, 13E, 13F and 13G, 13H, 13I and 13J, 13K, 13L are thin-plate laminated hydrodynamic bearings, 15A, 15B, 15C and 15D, 15E, 15F and 15
G, 15H, 15I and 15J, 15K, 15L are pins.

As shown in FIGS. 1 (a), 1 (b) and 2, the link type shaft coupling according to the first embodiment of the present invention comprises two adjacent disks of three disks. disk
Three links 14A, 14 each between 11, 12 and between 12, 11 '
Arrange B, 14C and 14D, 14E, 14F, two adjacent
Pin holes provided at one end of each link are respectively engaged with a plurality of pins fixed to one side of the two disks, and a plurality of pins fixed to the other side of two adjacent disks are
Engage the pin holes provided at the other end of each link respectively,
It connects two adjacent disks, respectively.
It is generally used when the displacement between the axes S and S 'is large.

Here, two pin holes provided at both ends of the link used in the first embodiment are respectively provided with shafts S,
Penetrates in the S 'direction, the distance between the two pin holes is the axis S, S'
And three links 14A, 14B, 14C and 14D, 14E, respectively, which are arranged between two adjacent disks of the three disks.
, 14F.

The pins 15A to 15L of the plurality of links are
The two disks are fixed at equal intervals on the circumference of the same diameter toward two adjacent disk surfaces in parallel with the axes S and S ′, respectively. The pins 15D, 15E, 15F provided on the driven shaft side and the pins 15G, 15H, 15I provided on the driven shaft side, when projected onto a plane orthogonal to the axis, are positioned at equal intervals on a circumference having the same diameter. Fixed.

The feature of the link type shaft coupling according to the first embodiment is that, as shown in FIG. 1, the length direction of a plurality of links (in FIG. 1, the vertical direction in the drawing is the length direction of the link).
The thin-plate laminated dynamic pressure bearing in which pins engaging with the respective pin holes are slidably fitted in the respective pin holes provided at both ends of the thin plate. That is, as shown in FIG. 2, pin holes provided at one end of each link 14A, 14B, 14C have pins 15A, 15B respectively engaged with the pin holes.
, 15C slidably fitted thin laminated bearings 13A, 1
3B and 13C are mounted, and pins 15D, 15E and 15F respectively engaged with the pin holes are slidably fitted into the pin holes provided at the other ends of the links 14A, 14B and 14C. Each of the thin-plate laminated dynamic pressure bearings 13D, 13E, and 13F is mounted.

In the pin holes provided at one end of each of the links 14D, 14E, 14F, there is provided a thin plate laminating mechanism in which pins 15G, 15H, 15I respectively engaged with the respective pin holes are slidably fitted. Attach pressure bearings 13G, 13H, 13I and each link 14D
, 14E, 14F, the pin holes provided at the other end portions thereof have thin-plate laminated hydrodynamic bearings 13J, 13K, 13L in which pins 15J, 15K, 15L respectively engaging with the respective pin holes are slidably fitted. Is installed.

Here, the laminated laminated hydrodynamic bearing used in the present invention.
FIGS. 3 (a), 3 (b), 3
This will be described with reference to FIG. The laminated laminated hydrodynamic bearings 13A to 13L used in the present invention have a plurality of shaft guides 32 stacked in a cylindrical case 31 and a lubricant 34 sealed by a seal 33, as shown in FIG. And stored. The shaft guide 32 laminated in the case 31 has a structure shown in FIG.
As shown in (b), a plurality of concave portions and convex portions 32a are formed on the inner periphery of the hollow disk, and the concave portions of the shaft guide 32 laminated in the case 31 are provided with a lubricant 34 such as grease. Is filled.

And, the laminated thin-plate hydrodynamic bearing used in the present invention.
Since the dimensional accuracy of the inner diameters of 13A to 13L can be made as high as 0 to +3 μm, the laminated laminated dynamic pressure bearings 13A to 13L are smaller than the outer diameters of the pins 15A to 15L fitted to the laminated laminated dynamic pressure bearings 13A to 13L, respectively. The inner diameter of the 13L is set to a plus tolerance of 3 μm or less, and as shown in FIG. 3 (c), the pressure due to the squeeze action is effectively generated in the lubricant 34 in each of the laminated hydrodynamic bearings 13A to 13L. Thus, the pins 15A to 15L are supported with high precision via the lubricant 34 without contacting the shaft guides 32 in the thin-plate laminated dynamic pressure bearings 13A to 13L. Therefore, the thin-plate laminated hydrodynamic bearing 13A used in the present invention
The rotation and sliding of each of the pins 15A to 15L fitted to the 13L are smooth.

Next, an example of a procedure for assembling the link type shaft coupling according to the first embodiment will be described with reference to FIG. Pins 15A and 15B are attached to the end disk 11 on the drive shaft side.
, 15C. The pins 15D, 15E, and 15F are pressed into the drive shaft side of the center disk 12, and the pins 15G, 15H, and 15I are pressed into the driven shaft side of the center disk 12.
Pins 15J and 15J are attached to the end disk 11 'on the driven shaft side.
Press in K and 15L.

On the other hand, thin-plate laminated hydrodynamic bearings 13A, 13B, 13C are attached to pin holes provided at one end of each link 14A, 14B, 14C by bonding and / or light press-fitting, respectively.
Thin-plate laminated hydrodynamic bearings 13D, 13E, and 13F are attached to pin holes provided at the other ends of A, 14B, and 14C by bonding and / or light press-fitting, respectively. Further, thin-plate laminated hydrodynamic bearings 13G, 13H, and 13I are attached to pin holes provided at one end of each link 14D, 14E, and 14F by bonding and / or light press-fitting, respectively. Thin-plate laminated dynamic pressure bearings 13J, 13K, and 13L are respectively attached to the pin holes provided at the ends by bonding and / or light press-fitting.

The links 14A, 14B, and 14C are attached to pins 15A, 15B, and 15C fixed to the end disk 11 on the drive shaft side.
Thin-plate laminated hydrodynamic bearings 13A, 13B, attached to one end of 14C,
Fit 13C each. The links 14A, 14A are connected to the pins 15D, 15E, 15F on the drive shaft side of the center disk 12, respectively.
B, 14C each thin-plate laminated hydrodynamic bearing 13D attached to the other end,
The end disks 11 on the drive shaft side and the center disk 12 are connected via links 14A, 14B, and 14C.

Next, the links 14D, 14E, 14F are connected to the pins 15G, 15H, 15I on the driven shaft side of the center disk 12, respectively.
Thin-plate laminated dynamic pressure bearings 13G, 13H, 13 attached to one end of
I and the links 14D, 14E to the pins 15J, 15K, 15L of the end disk 11 'on the driven shaft side.
, 14F attached to the other end of the thin laminated hydrodynamic bearings 13J, 1
3K and 13L are fitted respectively, and the center disk 12 and the end disk 11 'on the driven shaft side are linked with the links 14D, 14E and 14F.
Connect through.

By the above-described procedure, the link type shaft coupling of the first embodiment can be assembled, and two adjacent disks among the three disks can be connected with high precision via the thin-plate laminated hydrodynamic bearing. The drive shaft and the driven shaft are connected to the end disks 11, 11 '
, And can be operated with high accuracy and long-term accuracy, and requiring no maintenance.

End disk used in the first embodiment
The link 11 and the center disk 12 can be made of resin or metal, and the link 14 can be made of resin or metal. As the resin, for example, polyacetal, polyimide, nylon or the like can be used. First
The material of the pin used in the present embodiment can be bearing steel SUJ2, and it is preferable that the material is subjected to quenching and tempering treatment to have a hardness of HRc 60 to 66.

The material of the shaft guide of the laminated laminated hydrodynamic bearing used in the first embodiment can be a general cold-rolled steel plate JIS standard SPCC, and the inner peripheral portion of the shaft guide has a depth of 0.2. mm to the extent of carburizing and quenching
HRc55-57 is preferred. Further, it can be made of a synthetic resin or an aluminum alloy. Next, the second
The link type joint according to the embodiment will be described with reference to FIGS.

FIG. 4 is a front view showing a link type shaft coupling according to a second embodiment of the present invention, and FIG.
It is a right view of the link type shaft coupling shown in (a). FIG.
FIG. 7 is a perspective view showing a correspondence between pins of a link-type shaft coupling and thin-plate laminated hydrodynamic bearings according to a second embodiment of the present invention.
Note that S and S ′ are shaft cores, 21 and 21 ′ are end disks, 22
Is the center disk, 24A, 24B, 24C and 24D,
24E, 24F are links, 23A, 23B, 23C and 23D, 23E, 2
3F and 23G, 23H, 23I and 23J, 23K, 23L are thin-plate laminated hydrodynamic bearings, 25A, 25B, 25C and 25D, 25E, 25F
And 25G, 25H, 25I and 25J, 25K, 25L are pins.

As shown in FIGS. 4 and 5, the link-type shaft coupling according to the second embodiment includes, among three disks, between two adjacent disks 21, 22, and 22, 21 '. Between each three
Links 24A, 24B, 24C and 24D, 24E, 24F
And a pin fixed to one end of each link is engaged with a plurality of pin holes provided on one side of two adjacent disks, respectively, and provided on the other side of the two adjacent disks. A pin fixed to the other end of each link is engaged with each of the plurality of pin holes to connect two adjacent disks.

In each of the disks 21, 22, 21 ', pins 25A to 25L respectively engaging with the respective pin holes penetrate through the respective disks so as to be equally spaced on the circumference of the same diameter. It is provided. Also, in the center disk 22, pins 25D, 25E, 25F of each link arranged on the driving side;
The pins 25G, 25H, and 25I of each link arranged on the driven side are provided so as to penetrate so as to be located at the center on the same circumference.

As shown in FIGS. 4 and 5, two pins are provided at each end of each link in parallel with each other in the longitudinal direction.
It is fixed in the opposite axial direction. The pin intervals of each link are made equal, and the two pin intervals define the amount of displacement between the shaft centers S and S ′. Here, the feature of the link type shaft coupling according to the second embodiment is that each disk 21,
A thin-plate laminated dynamic pressure bearing in which a plurality of pin holes provided in each of the pin holes 22 and 21 'are slidably fitted with pins engaging with the respective pin holes.

That is, as shown in FIGS. 4 and 5, each pin hole provided in the drive-side end disk 21 is provided with a pin.
Thin laminated hydrodynamic bearings that fit into 25A, 25B and 25C respectively
23A, 23B and 23C are installed. Center disk 22
Each of the pin holes provided in the thin-plate laminated dynamic pressure bearings 23D, 23E, and 23F fitted to the pins 25D, 25E, and 25F, respectively, and the thin-plate laminated dynamic pressure bearings 23G that are fitted to the pins 25G, 25H, and 25I, respectively. 23H and 23I are installed. Each of the pin holes provided in the end disk 21 'has pins 25J and 25J.
K, 25L to be fitted into thin-plate laminated hydrodynamic bearings 23J, 23
K and 23L are installed.

The laminated thin-plate hydrodynamic bearing used in the second embodiment is the same as the thin-plate laminated hydrodynamic bearing used in the link-type shaft coupling according to the first embodiment, and a description thereof will be omitted. A method of assembling the link type shaft coupling according to the second embodiment will be described with reference to FIG. One end of each of the links 24A, 24B, 24C has a pin engaged with a pin hole of the disk 21 on one side.
25A, 25B, 25C, and the other end of the disk
The pins 25D, 25E, and 25F that engage with the pin holes of the 22 are press-fitted. One end of each link 24D, 24E, 24F has a pin 25G, 25H,
At the other end, pins 25J, 25K, and 25L that engage with pin holes of the disk 21 on the other side are press-fitted.

Further, thin-plate laminated dynamic pressure bearings 23A, 23B, and 23C fitted to the pins 25A, 25B, and 25C, respectively, are mounted in the respective pin holes of the drive-side disk 21 by bonding and / or light press-fitting. Each pin hole on the drive side of the disk 22 has a pin 25
D, 25E, 25F, respectively
D, 23E, and 23F are mounted by bonding and / or light press-fitting. Pins 25G, 25H, 25
Thin-plate laminated hydrodynamic bearings 23G, 23H, 23
Attach I with glue and / or light press fit. Thin-plate laminated dynamic pressure bearings 23J, 23K, and 23L fitted to the pins 25J, 25K, and 25L, respectively, are mounted in the respective pin holes of the driven-side disk 21 'by bonding and / or light press-fitting.

Then, pins 25A, 25B, 25C fixed to one ends of the links 24A, 24B, 24C are fitted to the thin-plate laminated dynamic pressure bearings 23A, 23B, 23C of the drive-side disk 21, respectively. Thin-plate laminated dynamic pressure bearings 23D, 23 on the drive side of the disk 22
Pins 25D, 25E, and 25F fixed to the other ends of the links 24A, 24B, and 24C are fitted into E and 23F, respectively, to connect the drive-side disk 21 and the disk 22.

Next, the pins 25G, 25H, 25I fixed to the links 24D, 24E, 24F are fitted to the thin-plate laminated dynamic pressure bearings 23G, 23H, 23I on the driven side of the disk 22. Pins 25J, 25K, 25L fixed to links 24D, 24E, 24F on the thin-plate laminated hydrodynamic bearings 23J, 23K, 23L of the driven disk 21 '
And the disk 22 and the driven side disk 21 '
And concatenate.

According to the above-described procedure, the link type shaft coupling of the second embodiment can be assembled, and two adjacent disks among the three disks can be connected with high precision via the thin-plate laminated hydrodynamic bearing. The drive shaft and the driven shaft are attached to the end disks 21 and 21 ', respectively, so that they can be operated with high precision and long-term accuracy. Can be realized.

The materials of the end disks 21, 21 'center disk 22 and the link 24 can be the same as in the first embodiment. Further, the material of the pin 25 and the material of the shaft guide of the laminated laminated hydrodynamic bearing 23 can be the same as those in the first embodiment. In the link-type shaft coupling according to the first and second embodiments described above, it has been described that two adjacent disks of the three disks are connected by three links. In the present invention, two adjacent disks can be connected by four or more links. To connect two disks with four or more links, the cost is four or five. It is advantageous in the point.

In the case of the link type shaft coupling according to the first embodiment, when two adjacent disks of the three disks are connected by two links, three disks 31, 32 are used. , 31 are shown in FIG. 6 (a), FIG.
What is necessary is just to be as shown in (b). That is, each pin 35A
35H are arranged on the circumference of the same diameter of each disk, and the links 34A and 34B engaged with the pins are parallel, and the links 34C and 34D are parallel to each other. When the position of each pin is projected on a plane perpendicular to the axial direction, the pin 35A placed on the end disk 31 on the drive shaft side
And 35B and pin 35C on center disk 32
The straight line connecting the positions of the center disk 32 and the center line 35D forms a rectangle, and the pins 35E and 35F
And a pin arranged on the end disk 31 'on the driven shaft side
A straight line connecting the positions 35G and 35H is fixed so as to form a rectangle rotated by 90 ° around the axis with respect to the rectangle on the drive shaft side.

In the link type joint according to the second embodiment, when two adjacent disks of three disks are connected by two links, three disks 31, 32 are used. , 31 ′, the positions of the pins fixed to the respective links engaging with the respective pin holes are connected to two adjacent disks by two links in the link type shaft coupling according to the first embodiment. In this case, the three discs 31, 32, and 31 'may be provided with respective pin holes so that the positions of the pins are the same.

[0043]

According to the present invention, two adjacent disks of the three disks are connected by a plurality of links via thin-plate laminated hydrodynamic bearings, so that there is little backlash and accurate operation for a long period of time. Can be a link type shaft coupling,
Further, cost can be reduced and maintenance is unnecessary.

[Brief description of the drawings]

FIG. 1A is a front view showing a link type shaft coupling according to a first embodiment of the present invention, and FIG.
It is a right view of the link type shaft coupling shown in (a).

FIG. 2 is a perspective view showing a correspondence between pins of the link-type shaft coupling and thin-plate laminated hydrodynamic bearings according to the first embodiment of the present invention.

FIG. 3A is a perspective view showing the structure of a thin-plate laminated hydrodynamic bearing used in the present invention, and FIG.
FIG. 3 is a plan view of the shaft guide shown in FIG.
(C) is a partial sectional view for explaining the operation of the thin-plate laminated hydrodynamic bearing.

FIG. 4 is a front view showing a link type joint according to a second embodiment of the present invention, and FIG. 4 (b) is a right side view of the link type joint shown in FIG. 4 (a). It is.

FIG. 5 is a perspective view showing a correspondence between a pin of a link-type shaft coupling and a thin-plate laminated hydrodynamic bearing according to a second embodiment of the present invention.

FIG. 6A is a perspective view showing a correspondence between a pin of a link-type shaft coupling and a thin-plate laminated hydrodynamic bearing according to another embodiment of the present invention, and FIG. It is an arrangement view showing arrangement of a link of a link type shaft coupling shown in Drawing 6 (a).

FIG. 7 is a perspective view of an example of a conventional link type joint.

8 (a) is a front view of a conventional link type joint, and FIG. 8 (b) is a right side view of the link type joint in FIG. 8 (a).

9 (a) is a partial sectional view showing a portion A in FIG. 8 (b), and FIG. 9 (b) is a perspective view showing a conventional oil-impregnated sintered link.

FIG. 10 is a perspective view showing the correspondence between pins and pin holes of a conventional example of a link-type shaft coupling.

FIG. 11 is an explanatory diagram showing the operation principle of the link type shaft coupling.

[Explanation of symbols]

11, 11 ', 21, 21', 31, 31 'End disk 12, 22, 32 Center disk 14A to 14F, 24A to 24F, 34A to 34D Link 15A to 15L, 25A to 25L, 35A to 35H Pin 13A to 13L , 23A-23L, 33A-33H Thin-plate laminated dynamic pressure bearing 1, 1 'end disk 2 Center disk 4A-4F Link 5A-5L Pin 6A-6L Pin hole 51 Oil seal 52 Thrust collar 53 Countersunk screw 54 Bearing 55 Washer 56 Cap S, S 'Shaft core

Claims (2)

[Claims] 1. A total of three disks: an end disk mounted on the drive shaft side, an end disk mounted on the driven shaft side, and a center disk disposed between the two end disks; Of the disks, each is disposed between two adjacent disks, and a plurality of pins fixed to one side of the two adjacent disks are respectively engaged with pin holes provided at one end of each link, and Two adjacent
A plurality of links fixed to the other side of the discs, and a plurality of links each having a pin hole provided at the other end of each link engaged with the plurality of pins, wherein the plurality of links are A link type shaft coupling characterized in that thin-plate laminated hydrodynamic bearings in which pins engaging with respective pin holes are slidably fitted in respective pin holes provided at both ends of the shaft. 2. A total of three disks: an end disk mounted on the drive shaft side, an end disk mounted on the driven shaft side, and a center disk disposed between the two end disks; Of the disks, each is disposed between two adjacent disks, and pins fixed to one end of each link are engaged with a plurality of pin holes provided on one side of the two adjacent disks, respectively, and Two adjacent
A plurality of links formed by engaging a pin fixed to the other end of each link with a plurality of pin holes provided on the other side of the two discs, respectively. A link-type shaft coupling characterized in that thin-plate laminated hydrodynamic bearings in which pins engaging with respective pin holes are slidably fitted in a plurality of pin holes provided in each of the disks.