JP2003028197A - One-way clutch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the assembling property of a spring for energizing a roller in a roller type one-way clutch device. SOLUTION: The spring 6 for energizing the roller is interposed between an inner ring 2 and an outer ring (not illustrated). The spring 6 is formed with waves, and formed with a fitting part 61 bent in a direction at a right angle against the vertical direction of the waves at an end thereof. A part 62 is a folding part of a folding piece. A part 7 is a column for holding the spring 6, and formed of a bottom part 71, a spring holding part 72 and a presser part 73 for pressing a block bearing. The bottom part 71 is integrally formed with a flange part of a holder in both sides. A tip of the holding part 72 is chamfered to form a chamfer part 74. A clearance between this chamfer part 74 and a fitting port 63 of the fitting part 61 of the spring 6 is increased to improve the spring assembling property.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way clutch device used for an automatic transmission mechanism for an automobile and the like, and more particularly to a one-way clutch device for biasing a roller as a torque transmitting member. The present invention relates to a one-way clutch device with improved assemblability. 2. Description of the Related Art FIG. 1 is a front view of a roller type one-way clutch 10 to which the present invention is applied, with a part of a retainer 4 being cut away, and FIG. FIG. 4 is a view showing a section A, in which a roller 5 urged by a spring 6 is interposed between an inner ring 2 and an outer ring 3, and a rotational force is applied in one direction by a combination with a cam surface 21 on the outer periphery of the inner ring 2 To communicate. Reference numeral 22 denotes a spline of the inner ring, 7 denotes a column holding a spring, 8 denotes a block bearing that holds a space between the inner and outer rings, and 31 denotes a raceway surface of the outer ring 3. FIG. 5 shows a structure of a pillar for holding a spring.
FIG. 6 is an explanatory view showing only the column taken out, and FIG. 6 is a view showing a place where a spring is fitted. The spring 6 is a wave spring, and the figure is a position where the wave portion is viewed from above, where 6P represents the top of the wave and 6T represents the valley portion of the wave. And a mounting portion 61 at one end of the spring 6
Is bent in a direction perpendicular to the vertical direction of the wave.
62 indicates a return portion. A pillar 7 for holding a spring 6 has a bottom 71,
It comprises a spring holding part 72, a holding part 73 holding the block bearing 8 as shown in FIG.
The bottom portion 71 is formed integrally with the left and right flange portions 41 of the cage to form the cage 4. As shown in FIG. 5, the mounting portion 61 of the spring 6 is fitted into the spring holding portion 72 of the column 7 and pushed in, whereby the spring 6 can be held by the column 7 as shown in FIG. In the conventional column structure, since the width of the tip of the spring holding portion 72 of the column 7 is large, the gap between the spring 6 and the tip of the holding portion 72 at the fitting opening 63 of the mounting portion 61 of the spring 6 is large. There was a problem that the gap was small and fitting was difficult. According to the present invention, in order to solve the above-mentioned drawbacks, the tip of the spring holding portion of the pillar is chamfered to increase the gap between the fitting portion of the spring mounting portion. , The assemblability of the spring is improved. FIGS. 3 and 4 show an embodiment of the present invention.
FIG. 7 is a drawing similar to FIG. 6, and the same reference numerals represent the same parts. As can be seen from FIGS. 3 and 4, the tip of the spring holding portion 72 is chamfered to form a chamfered portion 74. By doing so, the width of the distal end portion of the spring holding portion 72 is reduced, and the gap between the spring 6 and the distal end portion of the spring holding portion 72 is increased in the fitting port 63 of the mounting portion 61 of the spring 6, so that the spring is It becomes easy to fit. FIG. 4 shows a state in which the spring 6 has been pushed and fitted as described above. As described above, according to the present invention, the assemblability of the spring can be improved by chamfering the tip portion of the holding portion 72. According to the present invention, the tip of the spring holding portion of the pillar for holding the spring for urging the roll of the roller type one-way clutch is chamfered. The gap in the fitting opening of the mounting portion of (1) became large, the fitting became easy, and the assemblability of the spring could be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view in which a part of a roller type one-way clutch device is cut away. FIG. 2 is a cross-sectional view taken along a line AA in FIG. 1. FIG. FIG. 4 shows a state in which a spring is fitted. FIG. 5 shows a conventional example. FIG. 6 shows a state in which a spring is fitted. [Description of References] 2 Inner ring 3 Outer ring 4 Cage 5 Roller 6 Spring 7 Pillar 10 Roller-type one-way clutch device 21 Cam surface 22 Spline 31 Outer raceway surface 41 Flange part 61 Mounting part 62 Return part 63 Fitting opening 71 Bottom part 72 Spring holding part 73 Pressing part 74 Chamfering part

Claims (1)

Claims: 1. A roller urged by a spring as a torque transmitting member is interposed between an inner ring and an outer ring,
In a one-way clutch device that transmits rotational force in one direction by combination with a cam surface on the inner ring outer periphery, a tip of a spring holding portion of a column holding the spring biasing a roller is chamfered, and a spring is attached. A one-way clutch device characterized in that a fitting gap between the first and second parts is increased.