JPH04109231U - One-way clutch outer lace fixing structure - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To omit the man-hours required to assemble a ring-shaped leaf spring that prevents the outer race from moving when the one-way clutch is idling. [Structure] A convex portion 42 is provided on the inner diameter side of the ring-shaped leaf spring 40, and is locked by a bent portion 62 extending from a side plate 60, so that the ring-shaped leaf spring 40 is integrated with the one-way clutch assembly component, and the user side When assembling the one-way clutch, the man-hours required to assemble the leaf spring can be saved.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is used for torque transmission and back-up in the drive devices of automobiles and other general machinery. Fixing structure of the outer race of one-way clutch used as part of top etc. Regarding construction.

0002

[Conventional technology]

As a conventional well-known one-way clutch, FIG. 14 shows a side view, and FIG. There is a structure as shown in the XX cross-sectional view.

0003 In the figure, 10 is the outer lace, 20 is the inner lace, and 60 is the outer lace. This is a side plate attached to the side surface of the race 10. On the outer peripheral surface of the outer race 10 The provided spline protrusion 12 is a spline provided on the inner peripheral surface of the housing 30. is fitted into the groove 32, and both are fixed. Note that 100 is outer lace 10. This is a snap ring that positions the housing 30 in the axial direction.

0004 The one-way clutch mechanism, as shown in FIG. 14 with a part of the side plate 60 cut away, The inner cam surface 14 on the inner periphery of the outer race 10 and the outer periphery of the inner race 20 A large number of rollers 50 are interposed between the spring 7 and the spring 7 in contact with the idle side of the roller 50. 0. Consists of a mounting plate 80 for a spring 70. (Please note that this one-way Since the clutch mechanism is a well-known technology, a particularly detailed explanation will be omitted. )

Furthermore, since the housing 30 is a cast product and precise dimensions cannot be expected, a gap is provided between the spline protrusion 12 and the spline groove 32 in the circumferential direction. In the figure, the gap between the side surface A ₁ of the spline groove and the spline protrusion A ₂ is expressed as a ₁ , and the gap between the opposite side surfaces B ₁ and B ₂ is expressed as a ₂ . (Note that a ₁ + a ₂ is a.)

FIG. 16 shows a state in which the inner race 20 is idling, and if the inner race 20 rotates clockwise as shown by arrow _R1 , no locking action is performed and the inner race 20 idles clockwise, but the drag of the roller 50 The outer race 10 also rotates clockwise due to the torque, and the side surface _B2 of the spline protrusion 12 collides with the side surface _B1 of the spline groove 32, and the distance between the opposite surfaces _A1 and _A2 is _a1 + _a2 . Create a gap.

FIG. 17 shows a locked state in which the inner race 20 rotates counterclockwise as indicated by arrow _R2 . As shown in the figure, the outer race also rotates counterclockwise, so that the side surface _A2 is now in contact with _A1 , and the side surfaces _B1 and _B2 are separated, creating a gap of a.

[0008] When the idling state and the locked state are repeated in this way, the side surface of the spline protrusion 12 and The side surfaces of the spline groove 32 collide with each other through a gap of a, causing abnormal noise and vibration. The problem of occurrence of

[0009] FIG. 18 shows a spline protrusion 12 and a spline groove in order to solve the above problem. A compression spring 90 is interposed in the gap between 32 to prevent relative movement between the two. It is believed that

0010 Furthermore, in the examples shown in FIGS. 19 to 21, the side surface of the outer race and the housing are A corrugated ring-shaped leaf spring is interposed between the inner wall surfaces, and the friction between the two is applied. It is also considered to prevent anti-movement.

[0011] 21(a) shows a side view of the leaf spring 40, FIG. 21(b) shows a front view, and FIG. is a sectional view corresponding to FIG. 15, in which one side of the outer race 10 is attached with a leaf spring. A notch 16 is provided for installation. Figure 20 shows a ring between the housing 30 and the housing 30. A plate spring 40 having a shape of 1.5 mm is shown interposed therein. 100 is a snap as mentioned above It's a ring. At this time, the friction force of the spring is used as the pull on the outer race when idling. It must be greater than the shear torque.

0012

[Problems to be solved]

With the means described in FIGS. 18 to 21, the one-way clamp is not required on the user side. When trying to assemble a spring, the number of man-hours required to assemble the spring increases, and assembly is also troublesome. The reality is that it is difficult to handle.

[0013] Therefore, this idea was developed to assemble the leaf spring as an integral part of the one-way clutch assembly. The purpose is to eliminate the man-hours required by the user to install the spring.

[Means to solve the problem]

[0014] In this invention, in order to solve the above problem, a A convex part is provided on the inner diameter side of the part of the wave-shaped ring-shaped leaf spring that contacts the outer race. This convex part and the bent part extending from the outer periphery of the side plate of the outer race This locks the two into an integrated structure.

[Effect]

[0015] In a one-way clutch, the outer surface of the outer race and the inner wall surface of the housing A wave-shaped ring-shaped leaf spring is inserted in the outer race, and the frictional force is applied to the outer race when idling. The drag torque is increased to prevent the outer race from moving when idling. However, in this invention, a convex part is provided on the inner diameter of the corrugated ring-shaped leaf spring, so that it can be removed from the side plate. Since they are locked by the extending bent part, the two are integrated and can be combined into one-way. When assembling the clutch, the spring is already integrated into the component, so the user When assembling a one-way clutch, the number of steps needed to install a spring is reduced.

[0016]

【Example】

Figure 1 is a side view of the one-way clutch of this invention, Figure 2 is a sectional view taken along line XX in Figure 1, FIG. 3 shows a corrugated ring-shaped leaf spring of this invention.

[0017] 3(a) is a side view of the ring-shaped leaf spring 40, and FIG. 3(b) is a front view of the ring-shaped leaf spring 40. The ring-shaped leaf spring 40 is provided with a convex portion 42 on the inner diameter side of the portion in contact with the outer race 10. I'm being kicked. (In other words, in Fig. 3(a), the wave crests A, C, E, ...... The side is in contact with the outer lace 10. )

[0018] As shown in FIG. 2, a bent portion 62 extends from the side plate 60 to its outer periphery. locks the convex portion 42 of the ring-shaped leaf spring 40, and the leaf spring It has an integrated structure.

[0019] The structure as a one-way clutch is the same as in Figures 14 to 17, so the explanation is Details are omitted.

[0020] FIG. 4 shows a state where the ring-shaped leaf spring 40 is attached to the housing 30. It is interposed between the outer race 10 and the inner wall surface of the housing 30, and presses them together. There is. The convex portion 42 on the inner diameter side of the leaf spring 40 is attached to the outer race 10. The outer layer is secured by a bent portion 62 extending from the side plate 60 that has been cut out. The base 10 and the ring-shaped leaf spring 40 have an integral structure. 100 is as above It's a snap ring. The strength of the leaf spring is determined by the outer strength of the one-way clutch when it is idling. - Must be stronger than the drag torque applied to the race.

However, only when the one-way clutch enters the locked state for the first time after assembly, the outer race 10 also moves in the locking direction ( _R2 direction in the figure) as shown in _{FIG .} collides with each other, but even if it then enters the idling state, the outer race does not rotate in the direction of arrow _R1 in Fig. 16 due to the frictional force of the leaf spring 40, and remains in the state shown in Fig. 17 both when locked and when idling. There is only the first collision sound, and no abnormal noise or vibration occurs after that.

[0022] Figures 5, 6, and 7 show front views of examples of different shapes of ring-shaped leaf springs. In the example shown in 5, the tip of the convex portion 42 is further bent by 90°, and the portion 44 is turned around the entire circumference. The one shown in FIG. That is. In the example shown in FIG. 7, this 90° bent portion 44 is slightly convex This is an extension of 2 to the left and right.

[0023] Figure 8 and below are the colors in which the corrugated ring-shaped leaf spring 40 shown in Figures 5 to 8 is attached. It shows various examples. In Figures 8 to 13, 10 is the outer Race, 40 is a ring-shaped leaf spring, 42 is a convex part, 44 is a part obtained by further bending the convex part 42 60 is a side plate, 62 is a bent part, 30 is a housing, 34 is a spring holding part, 1 00 indicates a snap ring.

[0024] In the example of FIG. 8, the bent portion 44 and the bent portion 62 are in contact with each other.

[0025] In the example of FIG. 9, the side plate 60 is not provided with a bent part, and the tip of the bent part 44 is connected to the side plate 60. The outer periphery is locked.

[0026] In the example of FIG. 10, the bending part 62 presses and locks the upper part of the bending part 44.

[0027] In the example of FIG. 11, slightly different from FIG. 10, the bent portion 44 and the bent portion are bent at right angles. They are engaged at an angle.

[0028] In the example of FIG. 12, the tip of the bent portion 44 is further bent by 90° to become the bent portion 46. The side plate 60 does not have a bent portion. Therefore, the bent portion 46 and the side plate 60 is engaged with the outer peripheral edge of.

[0029] In the example of FIG. 13, the bent portion 62 of the side plate 60 is bent outward, and the leaf spring 40 is It engages with the barbed portion 46 in a spigot type.

[0030]

[Effect of the idea]

The invention of this application has the above-mentioned configuration, and the outer race is moved when idling. A ring-shaped leaf spring that prevents movement using frictional force is integrated with the one-way clutch components. This reduces the number of man-hours required for the user to assemble the one-way clutch, and increases capacity. It became easy to assemble.

[Brief explanation of drawings]

[Figure 1] Side view of the one-way clutch of this invention

[Figure 2] XX sectional view in Figure 1

[Figure 3] (a) Side view of the corrugated ring-shaped leaf spring of this invention

[Figure 3] (b) Front view of the corrugated ring-shaped leaf spring of this invention

[Figure 4] Cross-sectional view of the assembled ring-shaped leaf spring

[Figure 5] Front view of different examples of ring-shaped leaf springs

[Figure 6] Front view of different examples of ring-shaped leaf springs

[Figure 7] Front view of different examples of ring-shaped leaf springs

[Fig. 8] Cross-sectional views showing different ways of attaching a ring-shaped leaf spring

[Figure 9] Cross-sectional views showing different ways of attaching the ring-shaped leaf spring

[Figure 10] Cross-sectional views showing different ways of attaching the ring-shaped leaf spring

[Figure 11] Cross-sectional views showing different ways of attaching a ring-shaped leaf spring

[Figure 12] Cross-sectional views showing different ways of attaching the ring-shaped leaf spring

[Figure 13] Cross-sectional views showing different ways of attaching a ring-shaped leaf spring

[Figure 14] Side view of a conventional one-way clutch

[Figure 15] XX sectional view in Figure 14

[Figure 16] Explanatory diagram of the operating mode of a conventional one-way clutch

[Figure 17] Explanatory diagram of the operating mode of a conventional one-way clutch

[Figure 18] Explanatory diagram of an example of using a compression spring to prevent movement of the outer race

[Figure 19] Cross-sectional view showing the shape of the outer race for using a ring-shaped leaf spring

[Fig. 20] Cross-sectional view showing a state in which a ring-shaped leaf spring is interposed between the housing and the outer race.

[Figure 21] (a) Side view of ring-shaped leaf spring

[Figure 21] (b) Side view of ring-shaped leaf spring

[Explanation of symbols]

10 Outer lace 12 Spline protrusion 14 Inner cam surface 16 Notch 20 inner lace 30 Housing 32 Spline groove 34 Spring presser convex part 40 Wave-shaped ring-shaped leaf spring 42 Convex part of spring 44, 46 Bend part 50 roller 60 side plate 62 Bend part 70 spring 80 Spring mounting plate 90 Compression spring 100 snap ring

Claims (1)

[Scope of utility model registration request] [Claim 1] In the fixing structure of the outer race of the one-way clutch, a ring-shaped leaf spring 40 having a waveform in the axial direction can be interposed between the outer surface of the outer race 10 and the inner wall surface of the housing by being brought into pressure contact with both. As shown, a ring-shaped leaf spring 40 is attached to the outer surface of the outer race 10, and a convex portion 42 is provided on the inner diameter side of the portion that contacts the outer surface of the outer race. The outer race 10 and the ring-shaped leaf spring 40 are made into an integral structure by being locked by the bent part 62 extending from the outer peripheral edge of the side plate 60 attached to the side surface, and the ring-shaped leaf spring 40 is used as a one-way clutch. A fixing structure for the outer race of a one-way clutch, which is characterized by being incorporated as part of an assembly part.