JP2003194080A - Bearing device with stopper ring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-priced bearing device with a stopper ring having high reliability and possible to be strongly fixed to a shaft and a hole of a housing without forming a screw hole in a stopper ring. <P>SOLUTION: This bearing device with a stopper ring has a notch formed by cutting a part of an annular body into a slit, and this bearing device is provided with a C-shape stopper ring 50 installed in a circular lock groove 66 formed in the peripheral surface of the shaft 65, on which a bearing 60 is to be fitted, and this bearing device is provided with a hole 53, with which a fitting and removing tool is to be engaged, in both sides thereof near the notch and a collar 55 provided with a screw hole 56 concentrically with the hole 53 in the condition that the stopper ring 50 is installed in the lock groove 66. A screw 58 is screwed into the screw hole 56 of the collar 55 through the hole 53 of the stopper ring 50 to fix the stopper ring 50 and the collar 55 to each other. A side surface of the bearing 60 is made to abut on a side surface of the collar 55 to regulate the movement of the bearing in the direction of the collar 55 and the stopper ring 50. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device with a retaining ring for preventing the bearing from being displaced or coming off.

[0002]

2. Description of the Related Art As a retaining ring to be mounted from the end of a hole of a shaft or a housing, a C-type retaining ring having holes for attachment and detachment is specified by JIS or the like. For example, a C-shaped retaining ring 1 for a shaft defined in JISB2804 shown in FIG. 15 is formed in a C-shaped annular shape in which a slit-shaped notch 2 is partially provided, and a portion in the vicinity of the notch 2 Is provided with protrusions 3 and 3 protruding outward. Then, each protrusion 3 is formed with a hole 4 for engaging a tool for attachment and detachment. When the retaining ring 1 is attached to the shaft, a tool such as pliers is engaged with the hole 4 to open the protruding portions 3 so as to separate them from each other, and the inner diameter of the retaining ring 1 is widened to fit from the end of the shaft. Let

As shown in FIG. 16, the retaining ring 1 has a shaft 10
It is fitted into a locking groove 11 formed in an annular shape on the outer peripheral surface of the. Here, the axial width of the locking groove 11 is formed to be slightly larger than the thickness of the retaining ring 1. Therefore, the stop ring 1 is fitted in the locking groove 11 to restrict the movement in the axial direction. As described above, in the standard standard product of the snap ring, the snap ring itself is fixed by being fitted into the locking groove. However, when reliability is particularly required for fixing the retaining ring, the standard standard product has insufficient fixing force and cannot satisfy the requirement.

Therefore, as a means used to prevent the retaining ring mounted on the shaft from coming off, a retaining ring fixed by being screwed to the housing has been proposed. As shown in FIGS. 17 and 18, the conventional retaining ring 20 that is screwed is retained in a retaining groove 32 formed in an annular shape on the outer peripheral surface of the outer ring 31 of the bearing 30, and is screwed into the housing 36. Fixed to.

The retaining ring 20 is formed in an annular shape by stamping a spring steel plate material, and has a slit-like notch 21 in a part thereof, and further has a screw 3
A protrusion 22 for inserting 5 is provided. By forming the notch 21, the snap ring 20 can be elastically deformed in the diametrical direction, and the snap ring 20 can be expanded in diameter and fitted into the locking groove 32 from the end portion of the bearing 30. In addition, the protrusion 22 has a through hole 2 into which the screw 35 can be inserted.
3 is provided, and the retaining ring 20 can be fitted into the bearing 30 and then screwed into the screw hole formed in the housing 36. Therefore, since the retaining ring 20 can be fixed to the housing with a screw, it is possible to prevent the bearing 30 from falling out of the hole of the housing when the rotating shaft is inserted into the inner ring of the bearing 30 or when the rotating shaft is in operation. can do.

[0006]

However, since the retaining ring 20 having the above-mentioned structure is effective only when the bearing is attached to the end of the hole, there is a problem that the application is limited. Further, since it is necessary to form a member dedicated to screwing on a part of the retaining ring, there is a problem that the structure of the retaining ring becomes complicated. Further, in the above-described C-shaped retaining ring 1 defined by JIS, when the mounting and removing holes 4 are also used as screw-fastening holes, the screw used is too small or the screw There is a problem that the head may interfere with other members.

The present invention has been made to solve the above-mentioned problems, and can be firmly fixed to a shaft or a hole of a housing without forming a screw-dedicated hole in a retaining ring, and is inexpensive and reliable. It is an object of the present invention to provide a bearing device with a retaining ring of high quality.

[0008]

A bearing device with a retaining ring according to claim 1 of the present invention for achieving the above object has a notch having a shape in which a part of an annular body is cut into a slit shape. A C-shaped retaining ring which is mounted on an annular locking groove formed on the outer peripheral surface of the shaft on which the bearing is fitted, and has holes for engaging a tool for mounting and dismounting provided on both sides in the vicinity of the notch. And a collar having an annular shape that is externally fitted to the outer peripheral surface of the shaft and provided with a screw hole whose center line is aligned with the hole when the retaining ring is mounted in the locking groove. And fixing the retaining ring and the collar to each other by screwing a screw into the threaded hole of the collar through the hole of the retaining ring so that the side surface of the bearing abuts the side surface of the collar. The movement in the direction of the collar and the retaining ring is restricted by

According to the bearing device with a retaining ring having the above structure,
The holes for attachment and removal provided in the retaining ring mounted on the shaft on which the bearing is fitted are also used as the fixing holes for screwing. Therefore, it is not necessary to provide a screw-dedicated hole in the snap ring, and the screw can be screwed with a simple structure. Further, the mounting location of the bearing with a retaining ring is not limited to only the end portion of the shaft, and the bearing can be mounted at the same location as the mounting position of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

A bearing device with a retaining ring according to claim 2 of the present invention for achieving the above object has a notch in which a part of an annular body is cut into a slit shape, and the bearing is A C-shaped retaining ring provided on both sides in the vicinity of the cutout, the holes being fitted in an annular locking groove formed in the inner peripheral surface of the hole of the housing to be fitted, and engaging the tools for attachment and detachment; A collar having an annular shape to be fitted into the inner peripheral surface of the hole and having a screw hole whose center line is aligned with the hole in a state where the retaining ring is mounted in the locking groove. And a screw is screwed into the threaded hole of the collar through the hole of the snap ring to fix the snap ring and the collar to each other,
The movement of the bearing in the direction of the collar and the retaining ring is restricted by bringing the side surface of the bearing into contact with the side surface of the collar.

According to the bearing device with a retaining ring having the above structure,
The holes for mounting and dismounting provided in the retaining ring mounted in the holes of the housing are also used as the fixing holes for screwing. Therefore, it is not necessary to provide a screw-dedicated hole in the snap ring, and the screw can be screwed with a simple structure. Further, the mounting location of the bearing with a retaining ring is not limited to the end portion of the hole, and the bearing can be mounted at the same location as the mounting location of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

Further, a bearing device with a retaining ring according to a third aspect of the present invention for achieving the above object has a notch in which a part of an annular body is cut in a slit shape, and the bearing is mounted outside the bearing. A C-shaped retaining ring is provided, which is mounted in an annular locking groove formed on the outer peripheral surface of the shaft to be fitted, and has holes for engaging a tool for attachment and detachment provided on both sides in the vicinity of the notch, On the side surface of the inner ring of the bearing, a screw hole whose center line is aligned with the hole in a state where the retaining ring is mounted in the locking groove is provided, and a screw hole of the inner ring is provided through the hole of the retaining ring. It is characterized in that axial movement is restricted by screwing a screw to fix the retaining ring and the inner ring to each other.

According to the bearing device with a retaining ring having the above structure,
The holes for attachment and removal provided in the retaining ring mounted on the shaft on which the bearing is fitted are also used as the fixing holes for screwing. Therefore, it is not necessary to provide a hole for exclusive use in screwing the retaining ring, and since the retaining ring is directly fixed to the inner ring of the bearing, it is not necessary to provide another member for fixing the retaining ring. Therefore, as compared with the case where the retaining ring is screwed to the collar, a simpler bearing device with a retaining ring can be obtained with a smaller number of parts. Further, the mounting location of the bearing with a retaining ring is not limited to only the end portion of the shaft, and the bearing can be mounted at the same location as the mounting position of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

Further, a bearing device with a retaining ring according to a fourth aspect of the present invention for achieving the above object has a notch in which a part of an annular body is cut into a slit shape, and the bearing is internally A C-shaped retaining ring, which is mounted in an annular locking groove formed on the inner peripheral surface of the hole of the housing to be fitted and has holes for engaging a tool for mounting and dismounting provided on both sides in the vicinity of the notch, A threaded hole is provided on the side surface of the outer ring of the bearing, the center line of which is aligned with the hole when the retaining ring is mounted in the locking groove, and the outer ring of the outer ring is provided through the hole of the retaining ring. It is characterized in that movement in the axial direction is restricted by screwing a screw into the screw hole to fix the retaining ring and the outer ring to each other.

According to the bearing device with a retaining ring having the above structure,
The holes for mounting and dismounting provided in the retaining ring mounted in the holes of the housing are also used as the fixing holes for screwing. Therefore, it is not necessary to provide the retaining ring with a hole dedicated to screwing, and since the retaining ring is directly fixed to the outer ring of the bearing, it is not necessary to provide another member for fixing the retaining ring. Therefore, as compared with the case where the retaining ring is screwed to the collar, a simpler bearing device with a retaining ring can be obtained with a smaller number of parts. Further, the mounting location of the bearing with a retaining ring is not limited to the end portion of the hole, and the bearing can be mounted at the same location as the mounting location of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

A bearing device with a snap ring according to claim 5 of the present invention for achieving the above object is the bearing device with a snap ring according to claim 1 or 3, wherein the bearing is externally fitted. A recess is formed on the outer peripheral surface of the shaft in the vicinity of the head of the screw for screwing the snap ring, from the locking groove toward the end of the shaft.

According to the bearing device with a retaining ring having the above structure,
Since a recess is formed near the screw on the outer peripheral surface of the shaft toward the end of the shaft, it is possible to prevent the screw head from interfering with the shaft when screwing the snap ring, and to secure the snap ring securely. It can be screwed.

Further, a bearing device with a retaining ring according to claim 6 of the present invention for achieving the above object is the bearing device with a retaining ring according to claim 2 or 4, wherein: It is characterized in that a recess is formed in the peripheral surface in the vicinity of the head of the screw for screwing the snap ring, from the locking groove toward the end of the hole.

According to the bearing device with a retaining ring having the above structure,
Since a recess is formed on the inner surface of the hole of the housing near the screw stop toward the end of the hole, the screw head can be prevented from interfering with the housing when screwing the stop ring. Can be securely screwed.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a bearing device with a retaining ring according to the present invention will be described below with reference to FIGS. FIG. 1 is a plan view showing a first embodiment of a retaining ring of a bearing device with a retaining ring mounted on a shaft, and FIG. 2 is a plan view showing a bearing device with a retaining ring in which the retaining ring of FIG. 1 is mounted on a shaft. 3 is a vertical sectional view taken along the line AA in FIG. 2, FIG. 4 is a plan view showing a first embodiment of a retaining ring of a bearing device with a retaining ring mounted in a hole of a housing, and FIG. FIG. 6 is a plan view showing a bearing device with a retaining ring in which a ring is mounted in a hole, FIG. 6 is a vertical sectional view taken along line BB in FIG. 5, and FIG. 7 is a modification of the bearing device with a retaining ring of the first embodiment in FIG. FIG. 8 is a plan view showing an example, FIG. 8 is a longitudinal sectional view taken along line CC in FIG.
5 is a plan view showing a modified example of the bearing with a retaining ring of the first embodiment in FIG. 5, and FIG. 10 is a vertical cross-sectional view taken along the line D-D in FIG.

First, a first embodiment of a bearing device with a retaining ring mounted on a shaft will be described. As shown in Figure 1,
The retaining ring 50 for the shaft is made of spring steel and is formed into a C-shaped annular shape with a slit-shaped notch 51 provided in a part thereof. The protruding portions 52, 52 are provided. Then, each protrusion 52 is formed with a hole 53 for engaging a tool for attachment and detachment. When attaching the snap ring 50 to the shaft, a tool such as pliers is engaged with the hole 53 to open the protrusions 52, 52 so as to separate them from each other, and the inner diameter of the snap ring 50 is widened from the end of the shaft. Mating. Further, the hole 53 is formed larger than the hole of the standard product so that a larger screw can be inserted, and the head of the screw interferes with the outer peripheral surface of the shaft when the retaining ring 50 is mounted on the shaft and screwed. It is placed in a position that does not.

As shown in FIGS. 2 and 3, the retaining ring 50 is fitted in a locking groove 66 formed in an annular shape on the outer peripheral surface of the shaft 65. Here, the width of the locking groove 66 in the axial direction is equal to that of the retaining ring 5.
The thickness is slightly larger than 0. for that reason,
The snap ring 50 is fitted into the locking groove 66 to restrict movement in the axial direction.

A bearing 60 is externally fitted to the shaft 65, and an annular collar having a screw hole 56 formed by aligning the center line with the hole 53 between the bearing 60 and the retaining ring 50. 55 is attached. The collar 55 is arranged such that the side surface of the collar 55 is in contact with the retaining ring 50, and the hole 53 and the screw hole 5
A screw 58 is screwed into the screw hole 56 from the side of the snap ring 50 through the hole 53 with the center lines of 6 aligned. As a result, the protruding portion 52 of the retaining ring 50 is fixed to the collar 55 by screwing, so that the retaining ring 50 opens in the diametrical direction and the locking groove 6
6 can be prevented from coming off. Further, by bringing the side surface of the bearing 60 into contact with the side surface of the collar 55, the bearing 6
With 0, movement in the direction of the collar 55 and the retaining ring 50 is surely restricted. In addition, since the size of the screw 58 can be increased by providing the screw fixing hole 53 larger than the specified product, the fastening force for fixing the retaining ring 50 can be increased.

Next, a first embodiment of the bearing device with a retaining ring which is mounted in the hole of the housing will be described. As shown in FIG. 4, the retaining ring 70 for a hole is made of spring steel and is formed in a C-shaped annular shape in which a slit-shaped notch 71 is partially provided, and both sides of the notch 71 are formed. Protrusions 72, 72 are provided that protrude inwardly to a greater extent than the standard product. Then, each protrusion 72 is formed with a hole 73 for engaging a tool for attachment and detachment. When attaching the snap ring 70 to the hole of the housing, a tool such as pliers is engaged with the hole 73 to project the protrusions 72, 72.
Are closed so that they come close to each other, and the outer diameter of the retaining ring 70 is reduced so that the retaining ring 70 is fitted from the end of the hole. Further, the hole 73 is formed larger than the hole of the standard product so that a larger screw can be inserted, and is arranged at a position where the screw head does not interfere with the inner peripheral surface of the hole of the housing when the retaining ring 70 is mounted. Has been done.

As shown in FIGS. 5 and 6, the retaining ring 70 is fitted in a retaining groove 86 formed in an annular shape on the inner peripheral surface of the hole 85 of the housing. Here, the width of the locking groove 86 in the axial direction is formed to be slightly larger than the thickness of the retaining ring 70. Therefore, the stop ring 70 is fitted in the locking groove 86 to restrict the movement in the axial direction.

A bearing 80 is fitted in the hole 85, and an annular collar having a screw hole 76 formed by aligning the center line with the hole 73 between the bearing 80 and the retaining ring 70. 75 is attached. The collar 75 is arranged in contact with the retaining ring 70, and the screw 78 is screwed from the retaining ring 70 side through the hole 73a while aligning the center lines of the hole 73 and the screw hole 76. Thereby, the protruding portion 7 of the retaining ring 70
Since 2 is fixed to the collar 75 by screwing, it is possible to prevent the retaining ring 70 from diametrically closing and coming off the locking groove 86. Furthermore, by bringing the side surface of the bearing 80 into contact with the side surface of the collar 75, the movement of the bearing 80 in the direction of the collar 75 and the retaining ring 70 is reliably regulated. Further, since the screw fixing hole 73 is provided larger than the specified product, the size of the screw 78 can be increased,
The fastening force for fixing the retaining ring 70 can be increased.

Next, a modified example of the first embodiment of the bearing device with a retaining ring mounted on the shaft will be described. As shown in FIGS. 7 and 8, the retaining ring 50a for the shaft is a JISB28
It has a shape defined by 04 and is fixed to the collar 55a by a screw 58a while being fitted in the locking groove 66. Since the hole 53a formed in the protruding portion 52a has a size defined for attachment and detachment, the screw 58a to be inserted into the hole 53a is selected according to the size of the hole 53a.

When screwing the retaining ring 50a,
The head of the screw 58a may interfere with the outer peripheral surface of the shaft. Therefore, in the shaft 65a of the present modified example, a recess 67 formed from the locking groove 66 toward the end of the shaft 65a is formed at a position where the head of the screw 58a may interfere, that is, at a position near the hole 53a. It is provided. As a result, the retaining ring 50a for the shaft can be screwed to the collar 55a without changing the prescribed shape, and it is possible to prevent the retaining ring 50a from spreading in the diametrical direction and coming off the locking groove 66.

Further, a modified example of the first embodiment of the bearing device with a retaining ring mounted in the hole of the housing will be described. As shown in FIGS. 9 and 10, a retaining ring 70a for the hole
Has a shape defined by JISB2804,
The screw 78a is fixed to the collar 75a while being fitted in the locking groove 86. Hole 73 formed in protrusion 72a
Since a has a size specified for attachment and removal, the screw 78a to be inserted into the hole 73a is selected according to the size of the hole 73a.

When the retaining ring 70a is screwed,
The head of the screw 78a may interfere with the inner peripheral surface of the hole of the housing. Therefore, the hole 85a of this modification is located at a position where the head of the screw 78a may interfere, that is, the hole 7a.
At a position near 3a, a recess 87 formed from the locking groove 86 toward the end of the hole 85a is provided. As a result, the retaining ring 70a for the hole can be screwed to the collar 75a without changing the prescribed shape, and can be prevented from contracting in the diametrical direction and coming off from the locking groove 86.

Next, a second embodiment of the bearing device with a retaining ring according to the present invention will be described with reference to FIGS. Figure 1
1 is a plan view showing a second embodiment of a bearing device with a retaining ring to be mounted on a shaft, FIG. 12 is a vertical sectional view taken along the line EE in FIG. 11, and FIG. 13 is a retaining ring to be mounted in a hole of a housing. FIG. 14 is a plan view showing a second embodiment of the bearing device with a cover, and FIG.
3 is a vertical sectional view taken along line FF in FIG.

First, a second embodiment of the bearing device with a retaining ring mounted on the shaft will be described. In the first embodiment of the bearing device with a snap ring described above, the collar is provided with a screw hole to screw the snap ring, whereas the bearing device with a snap ring of the present embodiment has a screw hole in the inner ring 61. 62 is provided, and the retaining ring 50a is directly screwed to the bearing 60a.

As shown in FIGS. 11 and 12, the bearing 60
a is externally fitted to the shaft 65a described above, and is the retaining ring 5 described above.
A screw hole 62 is formed on the side surface of the inner ring 61 so that its center line coincides with the hole 53a of No. 0a. The inner ring 61 is disposed in contact with the side surface of the retaining ring 50a fitted in the locking groove 66, and the center lines of the hole 53a and the screw hole 62 are aligned with each other and screwed from the side of the retaining ring 50a through the hole 53a. 58
a is screwed in. Thereby, the protrusion 5 of the retaining ring 50a
Since 2a is fixed to the inner ring 61 by screwing, it is possible to prevent the retaining ring 50a from expanding in the diametrical direction and coming off the locking groove 66, and the bearing 60a is reliably restricted from moving in the axial direction. Further, since it is not necessary to separately provide a member such as a collar for screwing the retaining ring 50a, it is possible to obtain a highly reliable retaining ring fixing structure with a small number of parts. Further, even when creep (idling) occurs between the shaft 65a and the inner ring 61 of the bearing 60a, the screw 58a
The head and the recess 67 of the shaft 65a interfere with each other in the rotational direction, and creep can be stopped.

Next, a second embodiment of the bearing device with a retaining ring mounted in the hole of the housing will be described. In the first embodiment of the bearing device with a retaining ring described above, the collar is provided with screw holes to screw the retaining ring.
The bearing device with a retaining ring of the present embodiment is provided with a screw hole 82 in the outer ring 81 so that the retaining ring 70a is directly screwed to the bearing 80a.

As shown in FIGS. 13 and 14, the bearing 80
a is internally fitted into the hole 85a described above, and is the retaining ring 7 described above.
A screw hole 82 is formed on the side surface of the outer ring 81 so as to be aligned with the center line of the hole 73a of No. 0a. The outer ring 81 is arranged in contact with the side surface of the retaining ring 70a fitted in the locking groove 86, and the screw 78a is screwed in from the side of the retaining ring 70a with the center lines of the hole 73a and the screw hole 82 aligned. It
As a result, the protruding portion 72a of the retaining ring 70a is fixed to the outer ring 81 by screwing, so that it is possible to prevent the retaining ring 70a from contracting in the diametrical direction and coming off the locking groove 86, and the bearing 80a moves in the axial direction. Is certainly regulated. Also,
Since it is not necessary to separately provide a member such as a collar for screwing the retaining ring 70a, it is possible to obtain a highly reliable retaining ring fixing structure with a small number of parts. Further, even when creep occurs between the housing 85a and the outer ring 81 of the bearing 80a, the head of the screw 78a and the housing 8a.
Creep can be stopped by interference with the concave portion 87 of 5a in the rotational direction.

[0036]

As described above, according to the bearing device with a retaining ring according to the first aspect of the present invention, the holes for attachment and removal provided in the retaining ring mounted on the shaft on which the bearing is fitted. Is also used as a fixing hole for screwing. Therefore, it is not necessary to provide a screw hole for the retaining ring,
It can be screwed with a simple structure. Further, the mounting location of the bearing with a retaining ring is not limited to only the end portion of the shaft, and the bearing can be mounted at the same location as the mounting position of the prescribed retaining ring.

Further, according to the bearing device with a snap ring according to the second aspect of the present invention, a fixing hole to which a mounting and dismounting hole provided in the snap ring mounted in the housing is screwed. Also used as. Therefore, it is not necessary to provide a screw-dedicated hole in the snap ring, and the screw can be screwed with a simple structure. Further, the mounting location of the bearing with a retaining ring is not limited to the end portion of the hole, and the bearing can be mounted at the same location as the mounting location of the prescribed retaining ring.

Further, according to the bearing device with a snap ring according to the third aspect of the present invention, the fixing holes for attachment and removal provided in the snap ring mounted on the shaft on which the bearing is fitted are screwed and fixed. It is also used as a hole. Therefore, it is not necessary to provide a hole for exclusive use in screwing the retaining ring, and since the retaining ring is directly fixed to the inner ring of the bearing, it is not necessary to provide another member for fixing the retaining ring. Therefore, as compared with the case where the retaining ring is screwed to the collar, a simpler bearing device with a retaining ring can be obtained with a smaller number of parts.
Further, the mounting location of the bearing with a retaining ring is not limited to only the end portion of the shaft, and the bearing can be mounted at the same location as the mounting position of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

Further, according to the bearing device with a retaining ring according to the fourth aspect of the present invention, the fixing hole to which the attaching and detaching hole provided in the retaining ring mounted in the housing is screwed. Also used as. Therefore, it is not necessary to provide the retaining ring with a hole dedicated to screwing, and since the retaining ring is directly fixed to the outer ring of the bearing, it is not necessary to provide another member for fixing the retaining ring. Therefore, as compared with the case where the retaining ring is screwed to the collar, a simpler bearing device with a retaining ring can be obtained with a smaller number of parts. Further, the mounting location of the bearing with a retaining ring is not limited to the end portion of the hole, and the bearing can be mounted at the same location as the mounting location of the prescribed retaining ring. When it is necessary to increase the fastening force by screwing, it is possible to provide a large hole provided in the retaining ring so that a screw having a desired size can be used.

Further, according to the bearing device with a snap ring according to the fifth aspect of the present invention, since the concave portion is formed toward the end of the shaft at a position near the screwing on the outer peripheral surface of the shaft, the snap ring is formed. When screwing, the screw head can be prevented from interfering with the shaft, and the snap ring can be securely screwed. Also,
When the retaining ring and the inner ring are fixed to each other by the screw, the screw head and the recess interfere with each other in the rotation direction, so that the creep of the inner ring of the shaft and the bearing can be prevented.

Further, according to the bearing device with a snap ring according to claim 6 of the present invention, since the concave portion is formed in the vicinity of the screw fastening on the inner peripheral surface of the hole of the housing toward the end of the hole, The screw head can be prevented from interfering with the housing when the retaining ring is screwed, and the retaining ring can be securely screwed. Further, when the retaining ring and the outer ring are fixed to each other by the screw, the head of the screw and the recess interfere with each other in the rotational direction, so that the creep of the outer ring of the housing and the bearing can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a retaining ring of a bearing device with a retaining ring mounted on a shaft.

FIG. 2 is a plan view showing a bearing device with a retaining ring in which the retaining ring in FIG. 1 is mounted on a shaft.

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

FIG. 4 is a plan view showing a first embodiment of a retaining ring of a bearing device with a retaining ring mounted in a hole of a housing.

5 is a plan view showing a bearing device with a retaining ring in which the retaining ring in FIG. 4 is mounted in a hole.

6 is a vertical cross-sectional view taken along the line BB in FIG.

FIG. 7 is a plan view showing a modified example of the bearing device with a snap ring according to the first embodiment in FIG.

8 is a vertical cross-sectional view taken along the line CC in FIG.

9 is a plan view showing a modified example of the bearing with a retaining ring of the first embodiment in FIG. 5. FIG.

10 is a vertical cross-sectional view taken along the line DD in FIG.

FIG. 11 is a plan view showing a second embodiment of the bearing device with a retaining ring mounted on the shaft.

12 is a vertical sectional view taken along the line EE in FIG.

FIG. 13 is a plan view showing a second embodiment of the bearing device with a retaining ring mounted in the hole of the housing.

14 is a vertical cross-sectional view taken along the line FF in FIG.

FIG. 15 is a plan view showing a C-shaped retaining ring for a shaft defined by JIS, which is a conventional retaining ring.

16 is a vertical cross-sectional view showing a state in which the retaining ring in FIG. 15 is mounted on a shaft.

FIG. 17 is a plan view showing a conventional retaining ring to be screwed.

18 is a vertical sectional view taken along the line GG in FIG.

[Explanation of symbols]

Retaining ring for 50 shafts (first embodiment) Retaining ring for 50a shaft (modified example) 51 cutout 52 Projection 53 holes 55 colors 56 screw holes 58 screw 60 bearing (first embodiment) 60a bearing (second embodiment) 62 screw holes 65 axis 66 locking groove 67 recess Retaining ring for 70 holes (first embodiment) Retaining Ring for 70a Hole (Modification) 71 cutout 72 Projection 73 holes 75 colors 76 screw holes 78 screw 80 Bearing (first embodiment) 80a bearing (second embodiment) 82 screw holes 85 Housing hole 86 locking groove 87 recess

Claims (6)

[Claims] 1. An annular body has a notch in the shape of a slit cut and is mounted in an annular locking groove formed on the outer peripheral surface of a shaft on which a bearing is fitted, and is attached and Holes for engaging a tool for removal are provided on both sides in the vicinity of the notch, and a C-shaped retaining ring is fitted to the outer peripheral surface of the shaft. A collar provided with a screw hole whose center line is aligned with the hole in a state of being mounted in a stop groove, and the screw is screwed into the screw hole of the collar through the hole of the snap ring to stop the screw. A bearing device with a retaining ring, wherein movement of the collar and the collar in the direction of the collar and the retaining ring is restricted by fixing the ring and the collar to each other and bringing the side surface of the bearing into contact with the side surface of the collar. . 2. A ring-shaped body has a notch in the shape of a slit cut and is mounted in an annular locking groove formed in the inner peripheral surface of the hole of the housing into which the bearing is fitted. A C-shaped retaining ring having holes for engaging a tool for attachment and detachment provided on both sides in the vicinity of the notch, and an annular shape to be fitted into an inner peripheral surface of the hole, A collar provided with a screw hole whose center line is aligned with the hole when the ring is mounted in the locking groove, and a screw is screwed into the screw hole of the collar through the hole of the retaining ring. The retaining ring and the collar are fixed to each other, and the movement of the bearing in the direction of the collar and the retaining ring is restricted by bringing the side surface of the bearing into contact with the side surface of the collar. Wheel bearing device. 3. An annular body has a notch in the shape of a slit cut, and is attached to an annular locking groove formed on the outer peripheral surface of a shaft on which the bearing is fitted, and is attached and A hole for engaging a tool for removal is provided with C-shaped retaining rings provided on both sides in the vicinity of the notch, and the retaining ring is mounted on the side surface of the inner ring of the bearing in the locking groove. A screw hole whose center line is aligned with the hole is provided, and a screw is screwed into the screw hole of the inner ring through the hole of the retaining ring to fix the retaining ring and the inner ring to each other in the axial direction. A bearing device with a snap ring, characterized in that movement to the inside is restricted. 4. A ring-shaped engaging groove formed in an inner peripheral surface of a hole of a housing into which a bearing is fitted, the ring-shaped engaging groove having a notch formed by cutting a part of the annular body in a slit shape. A C-shaped retaining ring having holes for engaging a tool for attachment and detachment provided on both sides in the vicinity of the notch, and the retaining ring is attached to the locking groove on a side surface of the outer ring of the bearing. In the state, a screw hole with the center line aligned with the hole is provided,
By screwing a screw into the screw hole of the outer ring through the hole of the retaining ring to fix the retaining ring and the outer ring to each other,
A bearing device with a retaining ring, characterized in that movement in the axial direction is restricted. 5. A position in the vicinity of the head of the screw for screwing the retaining ring on the outer peripheral surface of the shaft on which the bearing is fitted,
The bearing device with a snap ring according to claim 1 or 3, wherein a recess is formed from the locking groove toward the end of the shaft. 6. A recess is formed in the inner peripheral surface of the hole of the housing in the vicinity of the head of the screw for screwing the snap ring, from the locking groove toward the end of the hole. The bearing device with a snap ring according to claim 2 or 4.