JPH0658233U - Thrust washer - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability of installing the thrust washer and to reduce the size. [Structure] The hat portion 21 of the holding metal fitting 20 is located inside the ring of the washer body 11, and the flange 2 of the peripheral portion thereof is located.
2 is embedded in the washer body 11. The hat top surface 23 is flush with the surface 12 of the washer body 11, and the surface 13 on the other side of the washer body 11 is the contact raceway surface S with the axial end of the turbine hub 2. The hat top surface 23 of the holding fitting is spot-welded W and fixed to the center of rotation of the converter cover 1. Since the holding metal fitting is embedded in the washer main body, it is sufficient to weld the holding metal fitting only to the positioning of the holding metal fitting to the converter cover, and the assembling work is easy. Moreover, since the contact raceway surface S of the washer body is formed to be entirely smooth, the contact surface pressure is reduced, the size can be reduced, and the durability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a thrust washer provided in a portion that receives an axial force, such as between a converter cover of a torque converter and a turbine hub.

[0002]

[Prior art]

 A conventional thrust washer of this type is disclosed in, for example, Japanese Utility Model Laid-Open No. 63-154857. As shown in FIG. 4, this thrust washer is attached to the converter cover 1 side facing the shaft end of the turbine hub 2 and receives the axial force and the rotational force from the turbine hub 2. . Here, the thrust washer 5 is attached to the converter cover 1 by covering the thrust washer 5 with a pressing metal fitting 7 from the side of a raceway that contacts the shaft end of the turbine hub 2 and welding the pressing metal fitting 7 to the converter cover 1. It is done by. As a result, the thrust washer 5 is pressed and held toward the converter cover by the pressing metal fitting 7 welded to the converter cover 1.

[0003]

[Problems to be solved by the device]

 However, in the conventional mounting structure of the thrust washer described above, a recess 6 is formed in the raceway surface of the thrust washer corresponding to the portion of the pressing metal fitting 7 that engages with the thrust washer 5, and the pressing metal 7 is attached to this recess 6. It welds to the central position of the converter cover 1 while aligning them. Therefore, it is necessary to position both the holding metal fitting 7 and the thrust washer 5, and there is a problem that the work is difficult.

Further, as described above, the concave portion 6 for engaging the pressing metal fitting is formed on the raceway surface of the thrust washer 5, and since this portion does not participate in the axial force load from the turbine hub 2, a necessary pressure receiving area is secured. Therefore, there is also a problem that the size of the thrust washer becomes large. Therefore, in view of the conventional problems described above, an object of the present invention is to provide a thrust washer which has good mounting workability and can be downsized.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention is a thrust washer that is attached to the first member of the rotating mechanism and receives the axial force from the opposing second member. The thrust washer includes a ring-shaped washer body and a holding metal fitting. The holding member has a disc portion and a flange extending from the peripheral edge of the disc portion and embedded in the washer body, and is fixed to the first member at the disc portion.

[0006]

[Action]

 Since the holding metal fitting is embedded in the washer body, when attaching it to the first member, it suffices to concentrate the holding metal fitting only on the first member and fix it with the disc part. Easy to work. Further, since the contact raceway surface of the washer body with the second member has no concave portion and is formed to be smooth over the entire surface, the contact surface pressure is reduced, the size can be reduced, and the durability is improved. .

[0007]

【Example】

 FIG. 1 shows a first embodiment of the present invention applied to a thrust washer mounted on a torque converter of an automatic transmission. In the figure, (a) is a sectional view showing a mounting state, and (b) is a front view. The thrust washer 10 includes a washer body 11 and a holding metal fitting 20. The washer body 11 has a rectangular cross section and is formed in a ring shape. The holding metal fitting 20 has a hat-shaped cross section with a flange 22, a hat portion 21 is located inside the ring of the washer body 11, and a flange 22 at the peripheral portion thereof is embedded in the washer body 11. The top surface 23 of the hat slightly protrudes from or is flush with the surface 12 of the washer body 11 on one side in the axial direction. The surface 13 on the other side of the washer body 11 serves as a contact raceway surface S that contacts the shaft end of the turbine hub 2.

The hat top surface 23 of the holding metal fitting 20 is fixed to the center of rotation of the converter cover 1 by spot welding W, so that the washer body 11 causes its abutment raceway surface S 1 to move toward the turbine hub biaxial end. Is held by the converter cover 1 so as to face the.

Since this embodiment is configured as described above and the holding metal fitting is embedded in the washer body, when attaching the holding metal fitting to the converter cover, attention is paid only to positioning the holding metal fitting with respect to the converter cover. Welding is possible and the assembly work is easy. In addition, since the raceway surface of the washer body that contacts the turbine hub shaft end has no recesses and is formed to be smooth over the entire surface, the contact pressure is reduced, resulting in a smaller size and improved durability. Have.

As a second embodiment, FIG. 2 is a front view showing a modified example of the holding metal fitting flange in the previous embodiment. The flange of the holding metal fitting has a ring shape which is continuous all around. In this embodiment, the flange portion of the holding metal fitting 20 'is circumferentially divided to form a plurality of radial claws 24. It is embedded in the washer body 11 '. This also produces the same effect as that of the first embodiment.

FIG. 3 shows a third embodiment. In the figure, (a) is a sectional view and (b) is a front view. In each of the above-mentioned embodiments, the peripheral flange of the holding fitting is embedded in the washer body from the ring inner peripheral surface of the washer body, whereas in this embodiment, the holding fitting is embedded in the washer body from the outer peripheral side. Is. That is, the washer body 11 ″ has a rectangular cross section as in the first embodiment and is formed in a ring shape. The holding metal fitting 20 ″ is folded back at the disc disk portion 25 and its outer peripheral edge and extends inward. It consists of a flange 26.

The disk portion 25 is a smooth surface and is in contact with a surface 12 ″ of the washer body 11 ″ on one side in the axial direction, and the flange 26 is located inside the washer body at the outer peripheral surface 15 ″ of the washer body. The surface 13 ″ on the other side of the washer main body is the contact raceway surface S with which the shaft end of the turbine hub 2 is abutted. The disc disk portion 25 of the holding metal fitting 20 ″ is welded and fixed to the center of rotation of the converter cover 1, so that the washer body 11 ″ has its abutment raceway surface S 2 facing the axial end of the turbine hub 2. It is held by the converter cover 1. Note that the flange may be claw-shaped as in the second embodiment.

Since this embodiment is configured as described above and the holding metal fittings are embedded in the washer body, when attaching to the converter cover, the holding metal fittings are simply positioned with respect to the converter cover as in the previous embodiment. It suffices to concentrate the attention only on the welding and the assembly work is easy. Similarly, there is no recess on the raceway surface of the washer body that is in contact with the turbine hub shaft end, and the entire surface is smooth, so the contact pressure is reduced, resulting in a smaller size and improved durability. Have.

[0014]

[Effect of device]

 As described above, according to the present invention, the thrust washer attached to the first member of the rotating mechanism portion and receiving the axial force from the second member facing the rotating washer body, the holding metal fitting, and the holding metal fitting are provided. Since the holding metal fitting is embedded in the washer body, when attaching to the first member, pay attention only to the positioning of the holding metal fitting with respect to the first member, and the disc portion. It is sufficient to fix with, which has the effect that the assembly work is easy. Further, since it is not necessary to provide a concave portion on the raceway surface of the washer body that comes into contact with the second member, the entire surface is made smooth, and the contact surface pressure is reduced, so that it can be made compact and durable. It also has the effect of improving the property.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment.

FIG. 3 is a diagram showing a third embodiment.

FIG. 4 is a diagram showing a conventional example.

[Explanation of symbols]

 1 Converter Cover 2 Turbine Hub 5 Thrust Washer 6 Recess 7 Retaining Fitting 10 Thrust Washer 11, 11 ', 11 "Washer Body 12, 12", 13, 13 "Surface 15" Outer Surface 20, 20', 20 "Holding Fitting 21 Hat part 22 Flange 23 Hat top surface 24 Claw 25 Disc disk part 26 Flange S Contact track surface W Welding

Claims (3)

[Scope of utility model registration request] 1. A thrust washer which is attached to a first member of a rotating mechanism and receives an axial force from an opposing second member, the thrust washer including a ring-shaped washer body and a holding metal fitting. The thrust washer, wherein the holding metal member has a disc portion and a flange extending from a peripheral edge of the disc portion and embedded in the washer body, and is fixed to the first member at the disc portion. 2. The holding metal member is formed in a hat shape,
The thrust washer according to claim 1, wherein a top surface of the hat is the disk portion, and the flange is embedded from an inner peripheral surface of the ring of the washer body. 3. The disk portion of the holding metal fitting is in contact with the axially one surface of the washer body, and the flange is folded back at the outer peripheral edge of the disk portion and extends inwardly to the washer body from the outer peripheral surface. The thrust washer according to claim 1, wherein the thrust washer is embedded.