JPH0631221Y2 - Bearing fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fixture for a bearing, and more particularly to a fixture for fixing a bearing to a shaft support member having a bearing support hole.

(Prior Art) Conventionally, as a fixture of this type of bearing, a holding metal fitting (C) having a pressing portion (C) that can be inserted into a bearing support hole (B) of a shaft support member (A) as shown in FIG. D) is used, and the pressing metal fitting ((D) is attached to the outer wall of the shaft support member (A) by a bolt (E).
(E) is screwed to allow the pressing portion (C) to support the outer ring (G) side wall of the bearing (F) inside the inner ring (H) of the bearing (F). The bearing (F), that is, the shaft (I) is mounted so as not to move in the axial direction by being pressed toward the portion (J).

(Problems to be Solved by the Invention) By the way, when the bearing (F) is fixed to the support hole (B) of the shaft support member (A) using the above-mentioned conventional pressing metal fitting (D), the pressing portion (C) is used. ) Is too short with respect to the length from the outer wall of the shaft support member (A) to the side wall of the outer ring (G) of the bearing (F), the bearing (F)
There is a problem that a gap is created between the pressing portion (C) and the bearing (H) and the shaft (I) rattles in the axial direction, and if the protruding length of the pressing portion (C) is too long, The pressing portion (C) excessively presses the outer ring (G) of the bearing (F) and adversely affects the function of the bearing (F), which shortens the life of the bearing (F). In order to accurately manufacture the portion (C) so that the protruding length thereof is the same as the length from the outer wall of the shaft support member (A) to the side wall of the outer ring (G) of the bearing (F), the pressing metal fitting is required. Not only it is necessary to manufacture (D) with high accuracy, but also it is necessary to improve the accuracy of all of the parts, and thus it is very difficult to increase the accuracy of each part.

In addition, it is necessary to specially process a screw hole (K) for screwing the pressing metal fitting (D) with the screw body (E) on the outer wall of the shaft support member (A), which is also troublesome. It was time-consuming.

Further, if the shaft (I) supported by the bearing (H) penetrates the shaft support member (A), the holding metal fitting (D).
However, there is a problem that the shaft (I) cannot be supported by the shaft support member (A).

An object of the present invention is that the shaft penetrates the shaft support member, and even if the manufacturing accuracy is somewhat poor, the bearing or the shaft rattles in the axial direction, or the bearing is excessively pressed so that A bearing fixing device capable of accurately fixing the bearing at a predetermined position of the shaft supporting member without shortening the life, and moreover, fixing the bearing without special processing of the shaft supporting member. Is to provide.

(Means for Solving Problems) The present invention, as shown in the embodiment of the drawings, fixes a bearing for fixing a bearing (4) to a shaft support member (2) having a bearing support hole (21). A tool that can be inserted into the support hole (21) and is provided on one side of the outer peripheral edge of the outer ring (4) of the bearing (4).
1) a contact portion (61) that abuts the side wall (41a), and a locking edge portion that extends in the opposite direction to the abutment portion (61) on the other side of the inner peripheral edge and that can be inserted into the shaft (5). A ring-shaped presser body (6) having (62) and a locking edge portion (6) of the presser body (6).
An elastically deformable ring-shaped stopper (8) interposed between 2) and the inner peripheral surface of the support hole (21) and the pressing body (6) are screwed together to form the stopper (8). And a screw body (7) for fixing the stopper body (6) to the pressing body (6). The outer diameter of the stopper body (8) is elastically deformed by the screw engagement of the screw body (7), It is characterized in that the pressing body (6) is sized so as to be pressed against the inner peripheral surface of the support hole (21) to fix the pressing body (6) in the support hole (21).

(Operation) With the above fixtures, however, the ring-shaped pressing body (6)
The abutment portion (61) of the bearing is in contact with the outer wall (41a) of the outer ring (41) of the bearing (4), the screw body (7).
By being screwed into a screw hole (6a) provided in the pressing body (6), the elastically deformable ring-shaped stopper (8) elastically deforms its outer peripheral surface to the inner peripheral surface of the support hole (21). And presses the inner circumference of the stopper body (8) to the pressing body (6).
Since the pressing body (6) can be fixed at an arbitrary position of the support hole (21) by being close to the locking edge portion (62) of the bearing (4), the bearing (4) is excessively pressed, and the play (6) in the axial direction is loosened. Even if the shaft (5) penetrates the shaft support member (2) without causing sticking, the bearing (4) can be immovably fixed to the shaft support member (2). is there.

(Embodiment) Hereinafter, a fixing device for a bearing according to the present invention will be described with reference to an embodiment of the drawings.

FIG. 1 shows a fixture for a bearing (4) according to the present invention, in which (1) and (2) have a pair of bearing support holes (11) and (21) facing each other at a predetermined interval. The shaft support members (1) and (2) such as the frame and the container wall, and the respective support holes (11) and (21) of the shaft support members (1) and (2).
Bearings (3) and (4) are inserted and fitted in the inside, respectively, and
Out of the shaft support members (1) and (2), the outer ring (3) of the bearing (3) is placed in the support hole (11) of the one side shaft support member (1).
An engagement portion (12) that engages with 1) is formed.
(5) has a large diameter part (51) in the middle part, and the large diameter part (5
The inner rings (32) (4) of the bearings (3) (4) are attached to both ends of (1).
2) With a shaft having stepped portions (52) (53) engaged with the shaft, one end of the shaft (5) is inserted into and supported by the inner ring (32) of one bearing (3), and the other end is supported. Inner ring (4) of the other bearing (4)
2) It is inserted and supported in the inside, and the other side shaft supporting member (2) is penetrated, and the bearing (4) is pressed against the inner peripheral surface of the supporting hole (21) of the other side shaft supporting member (2). Body (6)
It is designed to be fixed using.

Accordingly, the present invention uses the bearing (4) as the support hole (2).
As a fixture for a bearing fixed to the inner peripheral surface of 1), it can be inserted into the support hole (21), and the bearing (4) is provided on one side of the outer peripheral edge.
And a contact portion (61) that contacts the side wall (41a) of the outer ring (41), and a member that extends to the other side of the inner peripheral edge in the direction opposite to the contact portion (61) and that can be inserted into the shaft (5). Toe (6
A ring-shaped presser body (6) having 2) and the presser body (6)
An elastically deformable ring-shaped stopper (8) interposed between the engaging edge portion (62) and the inner peripheral surface portion of the support hole (21),
It comprises a screw body (7) which is screwed to the holding body (6) and fixes the stopper body (8) to the holding body (6), and the outer diameter of the stopper body (8) is the screw body. Since the outer peripheral surface is pressed against the inner peripheral surface of the support hole (21) by the elastic deformation due to the screwing of (7), the pressing body (6) is fixed to the support hole (21). is there.

The present invention is constructed as described above. When using the present invention, first, as shown in FIG. 1, first insert the bearing (3) into the support hole (11) of the shaft support member (1), The shaft (5) is attached to the inner ring (32) of the bearing (3), and the step (52) thereof is provided.
Are inserted so as to abut the inner ring (32), and then the bearing (4) is inserted into the shaft (5) so that the inner ring (42) abuts the stepped portion (53) of the shaft (5). The bearing (4) and the support hole (21) of the shaft support member (2).
Insert inside. After that, however, the ring-shaped presser body (6) is inserted into the support hole (21) of the other side support member (2) from the outside of the bearing (4), and the presser body (6) abuts. Part (61) is the side wall (41a) of the outer ring (41) of the bearing (4)
Abutting against the outer ring (3) of one bearing (3)
1) and the engaging portion (12) and the inner ring (32) and the stepped portion (52) of the shaft (5) are eliminated, and the inner ring (42) of the other bearing (4) and the shaft are eliminated. Step (5) (5
3) and the elastic deformation of the elastically deformable ring-shaped stopper (8) by screwing the screw body (7) into the screw hole (6a) provided in the holding body (6). , Its outer peripheral surface is pressed against the inner peripheral surface of the support hole (21),
The presser body (6) is fixed to the support hole (21) by pressing the inner circumference of the stopper body (8) against the locking edge portion (62) of the presser body (6), and thus the bearing. (3) The movement of (4) in the axial direction is disabled.

Due to such fixing, a gap is generated between the pressing body (6) and the bearing (4) to cause backlash in the axial direction of the shaft (5), or the bearing (4) of the pressing body (6). The bearings (3) and (4) can be accurately and reliably fixed without shortening the life of the bearings (3) and (4) due to excessive pressing.

In the embodiments described so far, for example, if a penetration shaft is used as a bearing in a mission case to seal the inside of the mission case and the outside of the bearing, as shown in FIG. Annular groove (63) on the surface and inner surface
(63) is provided, and O-rings (64) and (64) are fitted into these grooves (63) and (63), and instead of using the screw body (7), a screw portion is provided on the outer peripheral edge of the head (72). Headed bolt (71) having an annular projection (74) projecting in the direction
The head portion (72) of the bolt (71) is provided with the annular protrusion (74), and the protrusion (74) is welded to the inside of the pressing body (6) by projection welding to obtain the bearing ( 4) side and the bolt insertion hole (65) for inserting the bolt (71) provided in the pressing body (6) are sealed. In this case, the threaded portion (73) of the bolt (71) extends axially outward of the shaft (5) beyond the stopper (8), and the nut (75) is screwed into the extended portion. By this screwing of the nut (75), the stopper body (8) is elastically deformed and the pressing body (6) is fixed to the support hole (21). The bearing (4) can be accurately fixed to the shaft support member (2) by hermetically sealing the inner side and the outer side of the bearing.

(Effects of the Invention) As described above, the present invention can be inserted into the support hole (21), and the outer ring (41) of the bearing (4) can be disposed on one side of the outer peripheral edge.
Abutting part (61) that abuts the side wall (41a) and a locking edge part (62) that extends in the opposite direction to the abutting part (61) on the other side of the inner peripheral edge and that can be inserted into the shaft (5). ), And an elastically deformable ring interposed between the locking edge portion (62) of the pressing body (6) and the inner peripheral surface portion of the support hole (21). The stopper body (8) and a screw body (7) screwed to the pressing body (6) to fix the stopper body (8) to the pressing body (6). The outer diameter of the outer peripheral surface of the screw body (7) is elastically deformed by screwing the screw body (7),
Since the pressing body (6) is sized so as to be fixed to the support hole (21) in the vicinity of the inner peripheral surface of the support hole (21),
Even if the shaft (5) supported by the bearing (4) penetrates the shaft support member (2), the bearing (4) can be fixed at any position in the support hole (21). Therefore, it is possible to fix the bearing (4) immovably without excessively pressing the bearing (4) by the pressing body (6) without particularly increasing the manufacturing precision of each component. As a result, the shaft (5) can be fixed without rattling in the axial direction or shortening the life of the bearing (4), and further, the pressing body (6) is fixed to the shaft supporting member (2). There is no need for any troublesome processing.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a fixing device for a bearing of the present invention, FIG. 2 is a front view of a ring-shaped pressing body, FIG. 3 is a front view of a ring-shaped stopper, and FIG. 4 is a sealing bearing. FIG. 5 is a vertical cross-sectional view of an example of a fixture, and FIG. 5 is a vertical cross-sectional view showing a conventional fixture for a bearing. (2) ...... Shaft support member (21) ...... Bearing support hole (4) ...... Bearing (5) ...... Shaft (6) ...... Presser body (7) ...... Screw body (8) ...... Stopper

Claims (1)

[Scope of utility model registration request] 1. A bearing fixture for fixing a bearing (4) to a shaft support member (2) having a bearing support hole (21), which is insertable into the support hole (21) and has an outer peripheral edge. An abutting part (61) that abuts on the side wall (41a) of the outer ring (41) of the bearing (4) on one side, and extends in the opposite direction to the abutting part (61) on the other side of the inner peripheral edge, and the shaft. A ring-shaped pressing body (6) having a locking edge portion (62) which can be inserted into (5),
The retaining edge (62) of the retainer (6) and the support hole (2)
An elastically deformable ring-shaped stopper (8) interposed between the inner peripheral surface portion of 1) and the pressing body (6) are screwed together, and the stopper (8) is pressed into the pressing body (6). And a screw body (7) fixed to the support hole (2). The outer diameter of the stopper body (8) is elastically deformed by the screw engagement of the screw body (7), and the outer peripheral surface thereof is the support hole (2).
A fixture for a bearing, characterized in that it is sized to fix the pressing body (6) in the support hole (21) by pressing it against the inner peripheral surface of 1).