JPH09269013A - Bearing coupling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with eccentricity, deflection angle and axial movement between shafts by providing to a rotational force transmitting member between both prime mover shaft side and driven shaft side members, a pair of first and second slide outer surfaces which can slid on a pair of first and second slide inner surfaces of the prime mover shaft and driven shaft side members, and forming the first and second slide outer surfaces into square shapes by an axial cross sectional surface. SOLUTION: A pair of opposed first slide inner surfaces 12a', 12b' are formed into a metallic prime mover shaft side member 2, and a pair of opposed second slide inner surfaces 16a', 16b' are formed to a metallic driven shaft side member 4. In a rotational force transmitting member 6 member the prime mover shaft side member 2 and the driven shaft side member 4, a pair of first plastic slide outer surfaces 24a', 24b' and a pair of second plastic outer surfaces 26a', 26b' are formed to an approximately square metallic supporting body 22, and the surfaces 24a', 24b' and surfaces 26a', 26b' are respectively slidably matched to the surfaces 12a', 12b', and the surfaces 16a', 16b'. Therefore, this bearing coupling can favorably cope with eccentricity, deflection angle and axial movement between the prime mover shaft side and the driven shaft side so as to enhance transmitting efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotational force transmission technique, and in particular, a shaft coupling which can favorably deal with eccentricity, declination and thrust direction movement between a driving shaft side and a driven shaft side. Regarding

[0002]

2. Description of the Related Art In various kinds of torque transmitting mechanisms, ends of two rotating shafts are connected by a joint. For example, the output rotation shaft of the motor and the input rotation shaft of the pump are connected by a joint. In this case, it takes a lot of labor to carefully install the motor and the pump so that the output rotation shaft of the motor and the input rotation shaft of the pump are sufficiently aligned and the centers of rotation are sufficiently aligned. In addition, even if you pay attention to such alignment and install it, some eccentricity and declination remain between both rotating shafts, and further vibration occurs in the motor and pump during operation, In order to absorb these in the joint portion, a flexible shaft joint using a flexible member such as a spring or rubber has been conventionally used. Further, an Oldham coupling is used as a coupling capable of coping with eccentricity, declination, and thrust direction movement.

The present invention improves upon the conventional Oldham coupling,
An object of the present invention is to provide a shaft coupling that can cope well with eccentricity, declination, and axial movement between the driving shaft side and the driven shaft side, can be easily assembled, and can be reduced in size and cost. Is.

Another object of the present invention is to provide a shaft coupling which can smoothly transmit a rotational force and is easy to maintain.

[0005]

According to the present invention, in order to achieve the above object, a driving shaft side member and a driven shaft side member are arranged to face each other, and a driven side end portion of the driving shaft side member. Is formed with a pair of first slide inner surfaces parallel to the first direction surface including the axial direction, and the driven side end of the driven shaft side member includes the axial direction and is orthogonal to the first direction surface. A pair of second slide inner surfaces parallel to the second direction surface is formed, and a rotational force transmission member is arranged between the driving shaft side member and the driven shaft side member, and the rotational force transmission is performed. The member is slidable on each of the pair of first slide inner surfaces.
A pair of first slide outer surfaces and a pair of second slide outer surfaces each slidable with respect to the pair of second slide inner surfaces, and the pair of first slide outer surfaces in a cross section orthogonal to the axial direction. A shaft coupling, wherein the slide outer surface and the pair of second slide outer surfaces have a substantially square shape.
Is provided.

In an aspect of the present invention, the first slide inner surface and the second slide inner surface are made of metal, and the first slide outer surface and the second slide outer surface are made of plastic.

In one aspect of the present invention, the rotational force transmitting member is a support member having a substantially square shape and 1 supported by the support member.
A pair of first slide members and a pair of second slide members, wherein an outer surface of the first slide member forms the first slide outer surface, and an outer surface of the second slide member has the second slide outer surface. Is formed.

In one aspect of the present invention, the first slide member and the second slide member are detachably supported by the support body.

In one aspect of the present invention, the support is made of metal and the first slide member and the second slide member are made of plastic.

In one aspect of the present invention, the support is formed by laminating two metal plates, and the first slide member and the outer peripheral portion of each of the two metal plates are half parts. A support seat for supporting the second slide member is formed.

In one aspect of the present invention, the second slide member is positioned using the end portion of the first slide member, and the first slide member is also positioned using the end portion of the second slide member. The slide member is positioned.

In one aspect of the present invention, the support is composed of one plate, and a protrusion for supporting the first slide member and the second slide member is formed on an outer peripheral portion of the plate. The first slide member and the second slide member are formed with recesses that fit the protrusions.

In one aspect of the present invention, the rotational force transmitting member is formed of a substantially square plastic integral body.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing a first embodiment of a shaft coupling according to the present invention, FIG. 2 is a perspective view of its assembled state, and FIGS. 3 and 4 are sectional views thereof.

In these drawings, reference numeral 2 denotes a metallic driving shaft side member, which is attached to the end portion of the driving shaft 30 by a bolt as shown in FIG. 2 'is the driving shaft rotation center. Reference numeral 4 denotes a metal driven shaft side member, which is attached to the end of the driven shaft 32 by spline coupling as shown in FIG. 4 'is a driven shaft rotation center. The driving shaft side member 2 and the driven shaft side member 4 are arranged so as to face each other and the rotation centers 2 ′ and 4 ′ coincide with each other in the Z direction. That is, the axial direction is the Z direction.

A pair of first slide portions 12a and 12b are formed on the driven side end of the driving shaft side member 2 so as to project in the axial direction. As shown in FIG. 3, a pair of first slide inner surfaces 12a 'and 12b' are formed on these first slide portions so as to face each other. These first slide inner surfaces are parallel to the XZ plane in the figure. The drive shaft side member 2 is formed with a plurality of through holes 14 into which bolts for attaching to the drive shaft 30 are inserted.

A pair of second slide portions 16a and 16b are formed at the end of the driven shaft side member 4 on the drive side so as to project in the axial direction. As shown in FIG. 3, a pair of second slide inner surfaces 16a 'and 16b' are formed on the second slide portions so as to face each other. The inner surfaces of these second slides are parallel to the YZ plane in the figure. The driven shaft side member 4 is formed with a spline hole 18 into which the driven shaft 32 having a spline is inserted.

The driving shaft side member 2 and the driven shaft side member 4
The rotational force transmission member 6 is located between and. The rotational force transmission member 6 includes a metal support 22 having a substantially square shape, a pair of plastic first slide members 24a and 24b supported by the support, and a pair of plastic second slide members 26a and 26b. Consists of. As shown in FIG. 3, the outer surfaces of the first slide members 24a and 24b are first
The slide outer surfaces 24a 'and 24b' are formed, and the outer surfaces of the second slide members 26a and 26b form the second slide outer surfaces 26a 'and 26b'. As shown in FIG. 3, the pair of first slide outer surfaces 24a ', 24b' and the pair of second slide outer surfaces 26a ', 26b' are substantially square in the XY cross section orthogonal to the Z direction. Is doing.

As shown in FIG. 3, the first slide outer surface 24 is opposed to the first slide inner surface 12a ', 12b'.
a ', 24b' are slidably adapted so that the second slide outer surface 2 with respect to the second slide inner surface 16a ', 16b'
6a ', 26b' are slidably adapted.

A plurality of through holes 28 are formed in the support 22 in correspondence with the through holes 14 of the driving shaft side member 2. This is provided for the convenience of inserting the bolt into the through hole 14.

FIG. 5 is a sectional view of the driving shaft side member 2, and FIG. 6 is a sectional view of the driven shaft side member 4.

FIG. 7 is an exploded perspective view of the rotational force transmitting member 6, FIG. 8 is a sectional view of the assembled state, and FIG. 9 is a perspective view showing a method of manufacturing the support 22. It is a figure.

As shown in FIG. 7, the first slide members 24a, 24b and the second slide members 26a, 26b.
Can be attached to and detached from the support 22. Support seats 23a and 23b for supporting the first slide members 24a and 24b and a second slide member 26 are provided on the outer peripheral portion of the support body 22.
Support seats 25a and 25b for supporting a and 26b are formed.

As shown in FIGS. 8 and 9, the support 22 is made by joining two metal plates 22A and 22B by, for example, rivets or spot welding. These metal plates 22A and 22B have the support seats 23a,
Half portions for forming 23b, 25a and 25b are provided, and the support seat is formed by joining these metal plates 22A and 22B.

The plastic material of the first slide members 24a, 24b and the second slide members 26a, 26b is the first slide portion 12a of the driving shaft side member 2,
12b and the second slide portions 16a, 1 of the driven shaft side member 4
6b has a suitable slip property to a metal material such as iron,
Further, a synthetic resin having an appropriate strength such as a polyacetal resin or a polyamide resin can be used. This plastic slide member has self-lubricating property and high wear resistance, and continuously performs a lubricating action in contact with the first slide inner surface of the driving shaft side member 2 and the second slide inner surface of the driven shaft side member 4. Eggplant

Thus, in this embodiment, in the rotational force transmitting member 6, the first slide outer surfaces 24a, 24b slide in the X direction and slide in the Z direction with respect to the first slide inner surfaces 12a, 12b of the driving shaft side member 2. By moving and rotating about the Y direction, the second slide outer surfaces 26a, 26b can move relative to the driving shaft side member 2 with respect to the second slide inner surfaces 16a, 16b of the driven shaft side member 4.
The sliding movement in the direction, the sliding movement in the Z direction, and the rotation around the X direction enable relative movement with respect to the driven shaft side member 4.

In the present embodiment, when the drive shaft 30 rotates, the rotational force is transmitted from the drive shaft side member 2 to the rotational force transmission member 6.
Is transmitted to the driven shaft side member 4 via the, and the driven shaft 32 is rotated. When eccentricity, declination, or axial movement occurs between the driving shaft 30 and the driven shaft 32, the relative movement between the rotational force transmitting member 6 and the driving shaft side member 2 and the rotational force transmitting member are performed as described above. The relative movement between the driven shaft side member 6 and the driven shaft side member 4 can be dealt with well. The distance between the driving shaft side member 2 and the driven shaft side member 4 may be appropriately set according to the expected eccentricity, declination, or axial movement.

In the present embodiment, the first slide outer surfaces 24a, 24b and the second slide outer surfaces 26a, 26b are formed at the same position in the Z direction on the outer peripheral portion of the rotational force transmitting member 6, and the driving shaft side. The first slide portions 12a and 12b of the member 2 and the second slide portion 1 of the driven shaft side member 4
Similarly, 6a and 16b are also arranged at substantially the same position in the Z direction. Therefore, the driving shaft side member 2 and the driven shaft side member 4 can be brought sufficiently close to each other, and as can be seen from FIG. 2, the axial dimension can be reduced and the size can be reduced, and the rotation can be achieved. The efficiency of force transmission can be increased.

In this embodiment, since the torque transmitting member 6 has a proper vibration damping property, it is possible to suppress the vibration transmission between the driving shaft side and the driven shaft side.

Further, in this embodiment, the rotational force transmitting member 6
Since it exhibits self-lubricating properties in sliding contact with the driving shaft side member 2 and the driven shaft side member 4, it is not necessary to use lubricating oil and maintenance is easy. In addition, in this embodiment, since the rotational force transmitting member 6 is made of insulating plastic, the driving shaft side and the driven shaft side can be electrically insulated.

In this embodiment, in the rotational force transmitting member 6, the first slide members 24a and 24b with respect to the support 22 are provided.
Since the second slide members 26a and 26b are detachably supported, if these slide members are damaged due to wear or the like, they can be easily replaced.

FIG. 10 is an exploded perspective view of a rotational force transmitting member in a second embodiment of the shaft coupling according to the present invention, and FIGS. 11 and 12 are a perspective view and a sectional view of the assembled state, respectively. FIG. 13 is a perspective view showing a method of manufacturing the support body. In these figures,
Members having the same functions as those in FIGS. 1 to 9 are designated by the same reference numerals. The rotational force transmitting member of this embodiment is used in combination with a driving shaft side member and a driven shaft side member similar to those of the embodiment described with reference to FIG. 1 and others.

In the torque transmitting member of this embodiment, the second slide members 26a and 26b are positioned by using the ends of the first slide members 24a and 24b, and the ends of the second slide members 26a and 26b are positioned. The first slide members 24a and 24b are also positioned by using the parts. That is, the end portions of the first slide members 24a and 24b and the end portions of the second slide members 26a and 26b are brought into contact with each other, whereby the movement of the slide members in the X direction or the Y direction is restricted.

FIG. 14 is an exploded perspective view of a rotational force transmitting member in a third embodiment of a shaft coupling according to the present invention, and FIGS. 15, 16 and 17 are perspective views and front views of the assembled state, respectively. It is a figure and a sectional view. In these figures, members having the same functions as those in FIGS. 1 to 9 are designated by the same reference numerals. The rotational force transmitting member of this embodiment is used in combination with a driving shaft side member and a driven shaft side member similar to those of the embodiment described with reference to FIG. 1 and others.

In the rotational force transmitting member of this embodiment, the support 22 is made of a single plate made of metal or plastic, and the projections 123a for supporting the first slide members 24a, 24b are provided on the outer periphery thereof. 123b and projections 125a, 1 for supporting the second slide members 26a, 26b
25b are formed. Then, the first slide member 2
4a and 24b are formed with recesses 124a and 124b which fit the projections 123a and 123b, and second slide members 26a and 26b are formed with recesses 126a and 126b which are fitted to the projections 125a and 125b. The engagement between these protrusions and recesses may be removable or may be non-removably fixed.

FIG. 18 is a perspective view of a rotational force transmitting member in a fourth embodiment of a shaft coupling according to the present invention, and FIGS. 19 and 20 are a front view and a sectional view, respectively. In these figures, FIGS.
Members having the same functions as those in are denoted by the same reference numerals. The rotational force transmitting member of this embodiment is the same as that shown in FIG.
It is used in combination with a driving shaft side member and a driven shaft side member similar to those of the embodiment described with respect to others.

The rotational force transmitting member of this embodiment is made of a substantially square plastic integrated body.

[0039]

As described above, according to the present invention, it is possible to satisfactorily deal with eccentricity, declination and axial movement between the driving shaft side and the driven shaft side, and the efficiency of rotational force transmission is high. (EN) Provided is a shaft coupling that can be reduced in axial length and downsized. Further, according to the present invention, a shaft coupling that can smoothly transmit a rotational force and is easy to maintain is provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a shaft coupling according to the present invention.

FIG. 2 is a perspective view of an assembled state of the shaft coupling of FIG. 1;

3 is a sectional view of the shaft coupling of FIG. 1 in an assembled state.

4 is a sectional view of the shaft coupling of FIG. 1 in an assembled state.

FIG. 5 is a cross-sectional view of a driving shaft side member.

FIG. 6 is a cross-sectional view of a driven shaft side member.

FIG. 7 is an exploded perspective view of a rotational force transmission member.

FIG. 8 is a cross-sectional view of a rotational force transmitting member in an assembled state.

FIG. 9 is a perspective view showing a method of manufacturing a support body.

FIG. 10 is an exploded perspective view of a rotational force transmitting member in a second embodiment of a shaft coupling according to the present invention.

FIG. 11 is a perspective view of a rotational force transmission member in an assembled state.

FIG. 12 is a cross-sectional view of a rotational force transmission member in an assembled state.

FIG. 13 is a perspective view showing a method of manufacturing a support body.

FIG. 14 is an exploded perspective view of a rotational force transmitting member in a shaft coupling according to a third embodiment of the present invention.

FIG. 15 is a perspective view of an assembled state of a rotational force transmission member.

FIG. 16 is a front view of the rotational force transmitting member in an assembled state.

FIG. 17 is a sectional view of a rotational force transmitting member in an assembled state.

FIG. 18 is a perspective view of a rotational force transmitting member of a shaft coupling according to a fourth embodiment of the present invention.

FIG. 19 is a front view of a rotational force transmission member.

FIG. 20 is a cross-sectional view of a rotational force transmission member.

[Explanation of symbols]

 2 Drive shaft side member 2'Drive shaft rotation center 4 Driven shaft side member 4'Drive shaft rotation center 6 Rotational force transmission member 12a, 12b 1st slide part 12a ', 12b' 1st slide inner surface 16a, 16b 2nd slide part 16a ', 16b' 2nd slide inner surface 22 support body 23a, 23b support seat 24a, 24b 1st slide member 24a ', 24b' 1st slide outer surface 25a, 25b support seat 26a, 26b 2nd slide member 26a ', 26b' Second slide outer surface 30 Drive shaft 32 Driven shaft

Claims (9)

[Claims] 1. A driving shaft side member and a driven shaft side member are arranged so as to face each other, and a pair of first first members parallel to a first direction surface including the axial direction is provided at a driven side end of the driving shaft side member. A slide inner surface is formed, and a pair of second slide inner surfaces that are parallel to a second direction surface that includes the axial direction and that is orthogonal to the first direction surface is formed at the driving side end portion of the driven shaft side member. A rotational force transmission member is disposed between the driving shaft side member and the driven shaft side member, and the rotational force transmission member is the above-mentioned 1
And a pair of first slide outer surfaces slidable with respect to the pair of first slide inner surfaces and a pair of second slide outer surfaces slidable with respect to the pair of second slide inner surfaces, respectively. A shaft coupling, wherein the pair of first slide outer surfaces and the pair of second slide outer surfaces have a substantially square shape in a cross section orthogonal to the axial direction. 2. The shaft joint according to claim 1, wherein the first slide inner surface and the second slide inner surface are made of metal, and the first slide outer surface and the second slide outer surface are made of plastic. . 3. The rotating force transmitting member comprises a substantially square support and a pair of first slide members supported by the support.
A pair of second slide members, wherein the outer surface of the first slide member forms the first slide outer surface and the second slide member
The shaft coupling according to claim 1, wherein an outer surface of the slide member forms the second slide outer surface. 4. The shaft coupling according to claim 3, wherein the first slide member and the second slide member are detachably supported by the support body. 5. The shaft joint according to claim 3, wherein the support is made of metal and the first slide member and the second slide member are made of plastic. 6. The support is composed of two metal plates bonded together, and the outer periphery of each of the two metal plates is a half part of the first slide member and the second slide member. The shaft coupling according to any one of claims 3 to 5, wherein a support seat for supporting is formed. 7. The second slide member is positioned also by using the end portion of the first slide member, and the first slide member is positioned also by using the end portion of the second slide member. The shaft coupling according to any one of claims 3 to 6, which is characterized by being. 8. The support is made of one plate, and a protrusion for supporting the first slide member and the second slide member is formed on an outer peripheral portion of the plate. 4. The second slide member is formed with a recess that fits the protrusion.
The shaft coupling according to any one of to 5. 9. The rotating force transmitting member is formed of a substantially square plastic integrated body.
The shaft coupling according to any one of 2 above.