JPH0893778A - Bearing - Google Patents

Abstract

PURPOSE: To simplify an installing process by easily and reliably performing its installation when a shaft is rotatably arranged in a support member. CONSTITUTION: An end part 11a of a shaft 11 is inserted in a bag hole 16 of a shaft inserting part 14, and the shaft inserting part 14 of a support member 10a is fitted in a U-shaped notch part 18 of the support member 10a. Triangular projecting parts 15 and 15b of a bearing 12a are fitted in square through holes 19a and 19b of the support member 10a. When this fitting is performed, the U-shaped notch part 18 of the support member 10a is set in an interval to press in the shaft inserting part 14 of the support member 10a, and the triangular projecting parts 15a and 15b of the bearing 12a are set in an interval to be pressed in the square through holes 19a and 19b of the support member 10a, and the bearing 12a is fixed to the support member 10a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing for use in a rotating mechanism such as a copying machine and for rotatably mounting a shaft.

[0002]

2. Description of the Related Art Conventionally, in a copying machine or the like, for example, a bearing is used in a roller rotating portion of a paper transport mechanism. This bearing is an E-ring as shown in Japanese Patent Laid-Open No. 60-220222, and has a shaft attached to the bearing. That is, the shaft is attached so as not to come out of the bearing and to be rotatable.

FIG. 7 is a perspective view showing the structure of a conventional bearing. In FIG. 7, this example shows support members (housings) 1a, 1
Bearings 2a and 2b are provided at b. This bearing 2a,
Both ends 3a, 3b of the shaft 3 are inserted into 2b and protrude from the support members (housings) 1a, 1b. further,
A recess 4 is provided in the member of the projecting both ends 3a in the vicinity of the bearing 2a, and an E ring 5 is fitted into the recess 4. Both ends 3b also have E-rings fitted in recesses (not shown). This prevents the shaft 3 from coming out of the bearings 2a and 2b, and is rotatably attached.

[0004]

However, in the above-mentioned conventional bearing, since the E-ring 5 is used for mounting the shaft 3, the mounting is difficult. That is, in this assembling process, when the shaft 3 is inserted into the bearings 2a and 2b and then the E ring 5 is fitted into the recess 4 of the shaft 3, the E ring 5 may slip and drop.
Further, the recess 4 of the shaft 3 is provided in the immediate vicinity of the bearing 2a, and there is a drawback that the bearing 2a interferes with the work of fitting the E-ring 5 in a difficult manner.

The present invention solves the above-mentioned drawbacks of the prior art, and when the shaft is rotatably arranged on the support member, the shaft can be easily and surely attached and its assembly is completed. An object of the present invention is to provide a bearing that can simplify the process.

[0006]

In order to achieve the above object, the invention according to claim 1 is fixed to a support member, and
In a bearing that holds the shaft rotatably,
A joining member joined to the support member, a protrusion provided at a right angle to the joining member and having a bag hole into which the tip end portion of the shaft is rotatably inserted, and a projection arranged orthogonal to the joining member. And a fitting portion into which the protruding portion is fitted, and a penetrating portion into which the protruding portion is inserted into the support member.

According to a second aspect of the present invention, the protrusion has a cylindrical shape and D-cut surfaces are formed on both sides thereof, and the protrusion has a quadrangular shape and is inclined from the tip end. A U-shaped cutout portion is provided as a penetrating portion into which a protruding portion having a cut surface is fitted, and a square through hole into which a quadrangular protrusion is fitted is provided as a fitting portion. Is.

According to a third aspect of the present invention, the protrusion has a cylindrical shape and D-cut surfaces on both sides, and the protrusion has a cylindrical shape, and the support member has a cylindrical and D-cut surface. A through hole is provided as a penetrating portion into which the protruding portion is fitted, and a through round hole into which a cylindrical projection as the fitting portion is fitted is further provided.

According to a fourth aspect of the present invention, the protrusion has a columnar shape, a D-cut surface is formed on the side surface, and the projection has a claw at the tip end thereof.
A U-shaped notch as a penetrating portion into which the protruding portion having the cut surface is fitted, or a through hole into which the protruding portion is fitted is provided, and further, a through hole into which the protrusion is inserted is provided, In addition, the claw at the tip of the protrusion is locked around the through hole.

According to a fifth aspect of the present invention, a through hole is provided in place of the blind hole of the protrusion, and the shaft is inserted into the through hole.

[0011]

With such a structure, in the bearings according to claims 1 to 3, the projecting portion of the joining member is inserted into the U-shaped notch portion or the through hole of the supporting member. At the same time, the quadrangular projection of the joining member, which is inclined from the tip, is fitted into the quadrangular through hole that is the fitting portion of the support member. Alternatively, the cylindrical protrusion of the joining member is fitted into the through-hole, which is the fitting portion of the support member, and the bearing is fixed to the support member. Further, the tip end portion of the shaft is rotatably inserted into the bag hole of the protruding portion. Therefore, when the shaft is rotatably arranged on the support member, the E-ring slips and falls during the assembling work, as in the E-ring stopper conventionally used conventionally, and the fitting work involves difficulty. Absent. That is, the attachment is easily and reliably performed.

In the bearing according to the fourth aspect, the protruding portion of the joining member is inserted into the U-shaped notch portion or the through hole of the supporting member. At the same time, the projection is inserted into the through hole, and at this time, the claw at the tip end is locked around the through hole to fix the bearing to the support member. Further, the tip of the shaft is rotatably inserted into the bag hole of the projecting portion, and the bearing is fixed to the support member only by pushing the bearing. Therefore, the assembling process is performed easily and surely.

In the bearing according to the fifth aspect, the shaft is inserted into a through hole provided in place of the bag hole of the protruding portion. Therefore, the bearing can be arranged in the middle portion of the shaft or the like.
For example, when a long shaft or a shaft on which a heavy roller or the like is arranged is rotatably held, the holding becomes easy and accurate rotation can be obtained.

[0014]

Embodiments of the bearing of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the structure of a first embodiment of the bearing of the present invention, and FIG. 2 is an AA line in FIG.
It is sectional drawing which shows the cross-sectional structure of a line.

1 and 2, in this example, supporting members 10a and 10b such as a casing of equipment, a shaft 11 provided with rollers and the like and rotating, and this shaft 11 are provided.
Bearings 12a and 12b for arranging so as to be rotatable and not to be displaced in the longitudinal direction.

The bearing 12a has a plate-shaped base portion 13, a shaft insertion portion 14 projecting from the central portion of the base portion 13 toward the support member 10a, and is further arranged on both sides of the shaft insertion portion 14 of the base portion 13. Moreover, triangular protrusions 15a and 15b protruding in the direction of the support member 10a are provided.

In the shaft insertion portion 14 of the bearing 12a, the shaft 1 is provided in the protruding direction and in the center of the shaft insertion portion 14.
1 is provided with a bag hole 16 into which the end portion of the shaft 1 is rotatably inserted, and the D cut portion 1 is provided outside the shaft insertion portion 14.
7a and 17b are provided. The bearing 12b has the same structure as the bearing 12a.

The support member 10a is provided with a U-shaped notch 18 extending downward from the center of the upper end in the drawing, into which the shaft insertion portion 14 of the bearing 12a is fitted, and the U-shaped notch 18. The triangular protrusion 15 of the bearing 12a
Square through holes 19a and 19b into which a and 15b are fitted are provided. The support member 10b is also the support member 1
It has the same configuration as 0a.

Next, the function of the configuration of the first embodiment will be described. Bearing 12a, 12b and support member 1
0a and 10b are made of a plastic material and are individually formed by integral molding. If strength is required, bearing 1
Metal materials are used for 2a, 12b and support members 10a, 10b, and they are individually formed by integral molding. The selection of the plastic material and the metal material is determined in consideration of the member of the shaft 11.

The bearing 12a thus produced is fixed to the support member 10a. In this case, first, the end portion 11a of the shaft 11 is inserted into the blind hole 16 of the shaft insertion portion 14, and further, in the U-shaped notch portion 18 of the support member 10a,
The shaft insertion portion 14 of the support member 10a is fitted. Further, the triangular protrusions 15a and 15b of the bearing 12a are fitted into the square through holes 19a and 19b of the support member 10a. When this fitting is performed, the U-shaped notch portion 18 of the support member 10a is set to an interval for press-fitting the shaft insertion portion 14 of the support member 10a, and the triangular protrusion 15 of the bearing 12a is set.
a and 15b to the square through holes 19a and 1 of the support member 10a.
The bearing 12a is reliably and stably fixed to the support member 10a by setting the space for press-fitting into the bearing 9a.

The bearing 12b is fixed to the support member 10b in the same manner as the bearing 12a. As a result, the shaft 11 is arranged between the bearings 12a and 12b. In this case, since both ends of the shaft 11 come into contact with the bottom portion of the blind hole 16 of the shaft insertion portion 14 of the bearing 12a, the shaft 11 does not move in the direction of the bearings 12a and 12b.
The shaft 11 rotates accurately and reliably.

In this first embodiment, the bearings 12a, 12b
And the support members 10a and 10b are individually manufactured, and the bearing 12
Since the shaft 11 can be arranged at a predetermined position only by fitting the a and 12b into the support members 10a and 10b, it is conventionally and conventionally used when the shaft 11 is arranged in the housing (support members 10a and 10b). Unlike the E-ring stopper, which has been used, the E-ring can be easily and surely attached without slipping or dropping during the assembling work or difficulty in the fitting work.

FIG. 3 is a perspective view showing a modification of the first embodiment shown in FIG. In FIG. 3, the bearing 12a of this example,
12b has the same structure as that shown in FIGS. Then, the support members 10a and 10b are replaced with the U-shaped cutout portion 18 of the support member 10a shown in FIGS.
2 are provided, and square through holes 19a and 19b are provided on both sides of the through hole 22. The through hole 22 has the same shape as the cross section of the shaft insertion portion 14 of the bearing 12a. That is, the D cut portion 17 of the shaft insertion portion 14
It has a hole shape suitable for a and 17b.

In this modification, the end portion 11a of the shaft 11 is inserted into the blind hole 16 of the shaft insertion portion 14 of the bearing 12a.
And the shaft insertion portion 14 is pushed into the through hole 22 of the support member 10a, and the triangular protrusions 15a and 15b of the bearing 12a are inserted into the square through hole 1 of the support member 10a.
9a and 19b, and the bearing 12a is fitted into the support member 10
Fix to a. The bearing 12b is fixed to the support member 10a in the same manner as the bearing 12a. Also in this case, the through hole 22 of the support member 10a is set to the space for press-fitting the shaft insertion portion 14 of the support member 10a, and the triangular protrusions 15a and 15b of the bearing 12a are set to the square through holes 19a and 19b of the support member 10a. If you set the interval to press fit into
2a is reliably and stably fixed to the support member 10a.

Also in this case, when the shaft 11 is arranged in the housing (supporting members 10a, 10b) or the like, the mounting can be performed easily and surely.

In the structure shown in FIGS. 1 to 3, the shaft insertion portion 14 is press-fitted into the U-shaped notch portion 18 and the through hole 22, and the triangular protrusions 15a and 15b of the bearing 12a are connected to the square of the support member 10a. Although it is press-fitted into the through holes 19a and 19b, another method may be used. Although a process other than insertion is involved, for example, the support members 10a and 10b and the bearings 12a and 12b
If is made of plastic, it may be fixed with an adhesive or by high frequency welding. In the case of metal, it may be fixed by soldering or spot welding. This fixing method is selected in consideration of the required strength and its size. Further, the triangular protrusions 15a and 15b may be columnar or quadrangular prisms. In the case of this column, the square through holes 19a and 19b are formed as round holes.

FIG. 4 is a perspective view showing the structure of the second embodiment, and FIG. 5 is a sectional view showing the sectional structure taken along the line BB in FIG. In FIGS. 4 and 5, this example is shown in FIGS.
The structure is basically the same as that of the first embodiment shown in FIG. 2 and has bearings 12a and 12b for arranging the shaft 11 on the support members 10a and 10b so as to be rotatable and not to be displaced in the longitudinal direction.

The bearing 12a of the second embodiment has a plate-shaped base portion 13 and a support member 10a from the central portion of the base portion 13.
And a L-shaped protrusion 23a which is arranged on both sides of the shaft insertion portion 14 of the base 13 and protrudes in the direction of the support member 10a, and the inside of the tip is right angled, 23b are provided.
It is inclined toward the base portion 13 from the outermost tip of the L-shaped protrusions 23a and 23b. That is, the claws are formed, and the claws enable the L-shaped protrusions 23a and 23b to be easily and surely fixed, as will be described later in detail.

The shaft insertion portion 14 of the bearing 12a is provided with a blind hole 16 and the D cut portion 1 is provided outside the blind hole 16.
7a and 17b are provided. The bearing 12b has the same structure as the bearing 12a.

The support member 10a is provided with a through hole 22 in place of the U-shaped cutout portion 18 of the support member 10a shown in FIGS. 1 and 2, and the bearing 1 is provided on both sides sandwiching the through hole 22.
Rectangular through holes 25a, 25b are provided through which the L-shaped protrusions 23a, 23b of 2a are inserted and fixed. The through hole 22 has the same cross-sectional shape as the shaft insertion portion 14 of the bearing 12 a, and the D cut portion 17 of the shaft insertion portion 14 has the same shape.
It has a hole shape suitable for a and 17b. The support member 10b has the same structure as the support member 10a.

Next, the function of the configuration of the second embodiment will be described. Bearing 12a, 12b and support member 1
0a and 10b are integrally formed using a plastic material, a metal material, or the like.

The bearing 12a thus individually manufactured
Are fixed to the support member 10a. First, insert the end portion 11a of the shaft 11 into the blind hole 16 of the shaft insertion portion 14,
Then, the support member 10 is inserted into the through hole 22 of the support member 10a.
The shaft insertion portion 14 of a is fitted. Further, the bearing 12
The L-shaped protruding portions 23a and 23b of a are pushed into the through holes 25a and 25b of the support member 10a and fitted therein.

In this case, the L-shaped protrusions 23a and 23b are inclined from the tip to the direction of the base 13, and are inserted into the through hole 22 from the tip. At this time, this portion is elastically deformed along the inclination and is inserted into the through hole 22, and after this insertion, the elastic deformation of the member is returned to the original L-shaped portion of the through hole 22 of the support member 10a. To join. That is,
The L-shaped protrusions 23a and 23b are fixed to the support member 10a through the through holes 22.

The bearing 12b is fixed to the support member 10b in the same manner as the bearing 12a. As a result, the shaft 11 is arranged on the bearings 12a and 12b. In this case, both ends of the shaft 11 come into contact with the bottom of the bag hole 16 of the shaft insertion portion 14 of the bearing 12a, so that the shaft 11 does not move in the direction of the bearings 12a and 12b, and the shaft 11 rotates stably. Become.

In this second embodiment, the bearings 12a, 12b
Is simply pushed into the support members 10a and 10b to be fixed, and the work is easy. For example, work steps such as adhesion and welding are unnecessary, and the shaft 11 can be arranged at a predetermined position.
When it is arranged in a, 10b) or the like, it can be attached more easily and surely.

In the first and second embodiments, the bearings 12a and 12b having the same structure are arranged on the support members 10a and 10b, and the shaft 11 is attached to the support members 10a and 10b. Bearings 12a, 1 having different structures
The same action and effect can be obtained by a configuration in which 2b is arranged in combination with the support members 10a and 10b.

FIG. 6 is a sectional view showing the structure of the third embodiment. In FIG. 6, in the third embodiment, the first and second
Both ends of the shaft 11 are arranged in the two bearings 12a and 12b of the embodiment, and a bearing 12c that rotatably holds the shaft 11 by inserting the shaft 11 between the bearings 12a and 12b is arranged. The bearing 12c is fixed to the support member 10c. The bearing 12c may have any of the configurations of the first and second embodiments. The shaft insertion portion 1 is attached to the bearing 12c.
4 is provided with a through hole 30, and the shaft 11 is inserted into the through hole 30.

In the third embodiment, the two bearings 12a,
Since the shaft bearing 11 is rotatably held by disposing the bearing 12c between the shafts 12b, for example, when the shaft 11 is long and a relatively heavy roller is attached, the shaft 11 is bent. Without it, it will rotate correctly.

The bearings 12a and 12b may not be provided on both ends of the shaft 11 as in the first, second and third embodiments, but may be provided on only one of them. In this case, the other side of the shaft 11 may be directly fixed to, for example, the shaft of the motor, or may be directly fixed to another rotating mechanism.

[0040]

As is apparent from the above description, in the bearings according to claims 1 to 3, the protrusion of the joint member is the U of the support member.
The rectangular notch portion or the protrusion that is inserted into the through hole and is at the same time square in the joining member and inclined from the tip is fitted into the square through hole that is the fitting portion of the support member. Alternatively, the cylindrical protrusion of the joining member is fitted into the through-hole, which is the fitting portion of the support member, and the bearing is fixed to the support member. Further, since the tip of the shaft is rotatably inserted into the bag hole of the protruding portion, when the shaft is rotatably arranged on the support member, the shaft is easily and surely attached, which simplifies the assembly process. It has the effect that it can be converted.

In the bearing according to the fourth aspect, the protruding portion of the joining member is inserted into the U-shaped notch portion or the through hole of the supporting member, and at the same time, the protrusion is inserted into the through hole. At this time, the bearing is fixed to the support member by locking the claw at the tip around the through hole, and the tip of the shaft is rotatably inserted into the bag hole of the protrusion. Since it is fixed to the support member only by pushing in, there is an effect that the assembling process can be performed easily and surely.

In the bearing according to the fifth aspect, the shaft is inserted into the through hole provided in place of the blind hole of the protruding portion, so that the bearing can be arranged in the middle portion of the shaft and the like, and the holding thereof becomes easy. This has the effect that accurate rotation can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of a bearing of the present invention.

FIG. 2 is a cross-sectional view showing a cross-sectional structure taken along the line AA in FIG.

FIG. 3 is a perspective view showing a modification of the first embodiment shown in FIG.

FIG. 4 is a perspective view showing a configuration of a second embodiment.

5 is a cross-sectional view showing a cross-sectional structure taken along the line BB in FIG.

FIG. 6 is a sectional view showing a structure of a third embodiment.

FIG. 7 is a perspective view showing a configuration of a conventional bearing.

[Explanation of symbols]

 10a, 10b, 10c Support member 11 Shaft 12a, 12b, 12c Bearing 13 Base part 14 Shaft insertion part 15a, 15b Triangular protrusion part 16 Blind hole 17a, 17b D cut part 18 U-shaped notch part 19a, 19b Square through hole 22, 25a, 25b, 30 Through hole 23a, 23b L-shaped protrusion

Claims (5)

[Claims] 1. A bearing which is fixed to a support member and rotatably holds a shaft, wherein a joint member joined to the support member and the bearing is disposed orthogonal to the joint member. A penetrating hole in which the distal end portion of the shaft is rotatably inserted, and a protrusion disposed orthogonal to the joining member, and through which the protruding portion is inserted into the supporting member. A bearing, comprising: a portion; and a fitting portion into which the protrusion is fitted. 2. The protrusion has a cylindrical shape and D on both sides.
A U-shape as the penetrating portion, in which a cut surface is formed, the protrusion is quadrangular and inclined from the tip, and the columnar and the protruding portion having the D-cut surface is fitted into the support member. The bearing according to claim 1, further comprising a rectangular cutout portion, and further comprising a square through hole into which the square protrusion is fitted as the fitting portion. 3. The protrusion is cylindrical and has a D shape on both sides.
A cut surface is formed, and the protrusion is cylindrical,
The support member is provided with a through hole serving as the penetrating portion into which the cylindrical protrusion having the D-cut surface is fitted, and a through hole into which the cylindrical protrusion serving as the fitting portion is fitted. The bearing according to claim 1, further comprising a round hole. 4. The protrusion has a columnar shape, and a D-cut surface is formed on a side surface of the protrusion, and the protrusion has a claw at a tip end thereof, and the support member has a cylindrical D-cut surface. And a U-shaped notch as the penetrating part into which the protruding part is fitted, or a through hole into which the protruding part is fitted, and a through hole into which the protrusion is inserted, and The bearing according to claim 1, wherein a claw at a tip portion of the protrusion is locked around the through hole. 5. The bearing according to claim 1, wherein a through hole is provided instead of the blind hole of the protrusion, and the shaft is inserted into the through hole.