BOOT ASSEMBLY FOR A JOINT MEMBER

• US 20190331172A1
• Filed: 06/12/2019
• Published: 10/31/2019
• Est. Priority Date: 04/27/2018
• Status: Active Grant

• Current Assignee: GKN Driveline North America Incorporated (Melrose Industries Plc)
• Original Assignee: GKN Driveline North America Incorporated (Melrose Industries Plc)
• Inventors: Cassell, Robert L.
• Granted Patent: US 11,035,417 B2
• Time in Patent Office: Days
• CPC Class Codes: F16D 2003/22316 Means for fastening or attaching the bellows or gaiters
• CPC Class Codes: F16D 3/223 the rolling members being guided in grooves in both coupling parts
• CPC Class Codes: F16D 3/845 allowing relative movement of joint parts due to the flexing of the cover
• CPC Class Codes: F16J 15/50 between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
• CPC Class Codes: F16J 3/042 Fastening details
• CPC Class Codes: Y10S 464/906 Torque transmitted via radially spaced balls
• CPC Class Codes: Y10T 403/606 Leaf spring

Abstract

A boot assembly for a joint includes a boot and a boot can coupled to the boot at a connecting portion. The boot can includes a mounting portion including a flange having an inner surface and a retainer. The retainer is connected to the flange at a first location and is separate from the flange at a second location spaced from the first location. The retainer includes an inward portion spaced from the first location, and the inward portion is arranged closer to the axis than is the inner surface of the retainer between the first location and a midpoint of the retainer. The inner surface of the retainer is not at a constant angle relative to the axis along the length of the retainer.

Claims

1. A boot assembly for a joint, comprising:

a boot made from a flexible material; and

a boot can having a body that includes a connecting portion at which the boot and boot can are coupled together, a mounting portion including a flange having a central axis and an inner surface that faces the axis and extends circumferentially and axially relative to the axis, and a retainer that is connected to the flange at a first location and is separate from the flange at a second location spaced from the first location so that at least a portion of the retainer is movable relative to the flange, the retainer has a length between the first location and second location and the retainer has an inner surface facing the axis, and wherein the retainer includes an inward portion spaced from the first location, and the inward portion is arranged closer to the axis than is the inner surface of the retainer between the first location and a midpoint of the length between the first location and the second location, and wherein the inner surface of the retainer is not at a constant angle relative to the axis along the length of the retainer.

2. The assembly of claim 1 wherein the inner surface of the retainer, between the first location and a midpoint between the first location and second location, is not more than 1 mm closer to the axis than a radially innermost portion of the inner surface of the flange separate from the retainer.

3. The assembly of claim 1 wherein the inner surface of the retainer, between the first location and a midpoint between the first location and second location, is at an angle relative to the axis that does not vary by more than 10 degrees.

4. The assembly of claim 3 wherein the inner surface of the retainer from the midpoint to the first location is parallel to the axis or within 5 degrees of parallel to the axis.

5. The assembly of claim 3 wherein the inward portion is at an angle to the axis of at least 20 degrees.

6. The assembly of claim 1 wherein the inward portion includes a free end of the retainer that is not connected to and is movable relative to the flange, and the free end is bent relative to the remainder of the retainer at an angle of at least 20 degrees.

7. The assembly of claim 1 wherein the retainer is coupled to the flange at a base and has a free end that is not connected to and is movable relative to the flange and is spaced from the base, and wherein the free end is closer to the axis than is any other portion of the retainer.

8. The assembly of claim 1 wherein the mounting portion includes a void that defines the second location of the retainer.

9. A boot assembly, comprising:

a boot made from a flexible material; and

a boot can having a body with a connecting portion at which the boot and boot can are coupled together, and a mounting portion with a central axis, the mounting portion includes a retainer that is connected to the boot can at a first location and is separate from the boot can at a second location spaced from the first location, and the mounting portion includes a void that defines the second location of the retainer, and the retainer is flexible and resilient so that at least a portion of the retainer is movable relative to the remainder of the boot can between an unflexed state and a flexed state, the retainer has a bend spaced from the first location that defines an inward portion of the retainer that, in the unflexed state of the retainer, is located radially closer to the axis than the remainder of the retainer.

10. The assembly of claim 9 wherein the retainer has an inner surface that, between the first location and a midpoint between the first location and second location, is not more than 1 mm closer to the axis than a radially innermost portion of the inner surface of the mounting portion other than the retainer.

11. The assembly of claim 9 wherein the retainer has an inner surface that, between the first location and a midpoint between the first location and second location, is at an angle relative to the axis that does not vary by more than 10 degrees.

12. The assembly of claim 11 wherein the inner surface of the retainer from the midpoint to the first location is parallel to the axis or within 5 degrees of parallel to the axis.

13. The assembly of claim 11 wherein the inward portion is at an angle to the axis of at least 20 degrees.

14. The assembly of claim 9 wherein the inward portion includes a free end of the retainer that is not connected to and is movable relative to the mounting portion, and the free end is bent relative to the remainder of the retainer at an angle of at least 20 degrees.