JPH085393Y2 - One way clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a one-way clutch installed in a lubricating oil atmosphere.

(Prior Art) It is a generally-used means to connect a flange-like member integrated with another rotating member to a side surface of an outer ring of a one-way clutch and integrally rotate the same (for example, Japanese Utility Model No. 62-1).
84225 publication). With such a configuration, one side of the one-way clutch is closed by the flange-shaped member,
The distribution of the lubricating oil is deteriorated, and the lubricity and the foreign substance discharging property are deteriorated. In view of the above, in the above-mentioned publication, as shown in FIG. 1, a radial groove connecting the inner and outer circumferences is provided on the side surface of the external flange member side, and the outer peripheral surface is formed from the outer end of the groove. A lateral groove extending in the axial direction is engraved to form a passage for the lubricating oil.

(Problems to be solved by the invention) As described above, in order to engrave a groove on the outer surface of the outer ring, a special processing means must be used, which is extremely inefficient and costly. Even if the grooves in the direction are omitted and only the grooves in the radial direction are engraved, the cost is still high. Moreover, since the one-way clutch is a small precision component, the groove cross-sectional area cannot be increased, and it is extremely difficult to form a groove having a small cross-sectional area and a well-balanced weight during casting.

Therefore, an object of the present invention is to form a lubricating oil passage by an inexpensive means without engraving a groove.

(Means for Solving the Problems) The means for solving the problems in the present invention has an inner ring, an outer ring and a one-way cam interposed in a space between the inner ring and the outer ring, and a screw hole is provided in the outer ring in parallel with the axis. In a one-way clutch in which a flange-shaped member to be attached to a rotary shaft is brought into contact with the side surface of the outer ring, and the flange-shaped member and the outer ring are connected by a bolt passing through the screw hole, and a lubricating oil passage is provided on the contact surface, The member is provided with a recess partly overlapping the space between the inner and outer rings, and a lateral hole communicating with the recess is formed in the outer ring in parallel with the screw hole to form a lubricating oil passage.

(Operation) With the above configuration, the lubricating oil sprinkled on the one-way clutch part lubricates the sliding surfaces of the inner and outer wheels and the one-way cam, and then flows out of the lateral hole of the outer ring through the concave portion of the flange-shaped member by centrifugal force. Therefore, new lubricating oil is constantly supplied to the sliding surface when the outer ring rotates.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows what was implemented in the starter mechanism of the engine,
Reference numeral 1 is an engine, 2 is a starter motor, and 3 is a one-way clutch. In the engine 1, 4 is a crankshaft, 5
Is a piston, and a flange-like member 6 is provided at the end of the crankshaft.
Is fixed, and the rotor 8 of the generator 7 is fixed thereto by six rivets 9. The flange-like member 6 is provided with a large-diameter recess 10 as a sink hole for the caulking portion of the rivet 9.

One-way clutch 3 has inner ring 11, outer ring 12,
It has a one-way cam 13, and a driven gear 14 is welded to the inner ring 11. As shown in FIG. 2, the outer ring 12 is provided with six screw holes 15 and two lateral holes 16 at symmetrical positions, both of which are parallel to the axis. is there. The one-way cam 13 is provided between the inner circumference 12a of the outer ring and the inner ring 11, and is positioned by the holder 17 and the side plates 18 and 19.

The outer ring 12 is a bolt 20 shown in FIG. 1 that is screwed into the screw hole 15.
The concave portion 10 for the rivet 9 in this state is fixed to the flange-shaped member by a large diameter, and as shown by the phantom line in FIG. 2, as shown by the phantom line in FIG.
Overlapping with the space between 1 and 12, a passage is formed from the space through the recess 10 and the lateral hole 16 as shown in FIG.

The pinion 22 of the starter motor 2 and the driven gear 14
A two-stage idler 23 is interposed between the two, and when the engine is started, the rotation of the starter motor 2 is transmitted to the driven gear 14, and the one-way clutch 3 and the flange-shaped member 6 rotate the crankshaft 4 to rotate the engine. Start 1. After starting and when the starter motor is stopped, the crankshaft 4 and the outer ring 12 side rotate faster because they are faster than the inner ring 11 side.

When the outer ring 12 side is rotating in this way, the lubricating oil that is sprinkled on the one-way clutch 3 and supplied to the sliding surfaces of the inner and outer rings 11, 12, the one-way cam 13 and the like is subjected to centrifugal force to cause the concave portion 10,
It flows out through the passage formed by the lateral holes 16 as shown by the arrow, new lubricating oil is successively supplied to the sliding portion, and the sliding surface is lubricated, and if there is a fine foreign substance, it can be discharged. Since the portion of the outer ring 12 that serves as a passage for the lubricating oil is only the lateral hole 16, the structure of the lubricating oil passage is simple,
Further, since the lateral hole 16 is parallel to the axis with the screw hole 15,
Both the lateral hole 16 and the prepared hole of the screw hole 15 can be easily drilled by drilling in the same direction. In the above-mentioned embodiment, the recess 10 is formed by using the sunk hole of the rivet to fix another member, but the recess 10 is formed by forming an independent bottomed hole or providing it at the time of casting. can do.

(Effect of the invention) As described above, the present invention does not engrave a groove on the outer ring,
Since a lubricating oil passage can be formed simply by providing a horizontal hole in a position communicating with the recess of the flange-shaped member in parallel with the screw hole provided for fixing the outer ring to the flange-shaped member, it is easy to process and can be produced at low cost. Has the effect of being able to.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention, and FIG. 2 is a side view of an outer ring. 3 …… One way clutch 6 …… Flange member 10 …… Concave 11 …… Inner ring 12 …… Outer ring 13 …… One way cam 16 …… Side hole

Claims (1)

[Scope of utility model registration request] 1. A one-way cam provided in a space between an inner ring, an outer ring and an inner / outer ring, wherein a screw hole is provided in the outer ring in parallel with an axis line, and a flange-like member attached to a rotary shaft is brought into contact with a side surface of the outer ring. In a one-way clutch in which a flange-shaped member and an outer ring are connected by a bolt passing through the screw hole and a lubricating oil passage is provided on a contact surface of the flange-shaped member, a recess in which the flange-shaped member partially overlaps the space between the inner and outer rings And a lateral hole communicating with the recess is formed in the outer ring in parallel with the screw hole to form a lubricating oil passage.