Gear mechanism

Patent metadata

Field	Value
Publication number	US-12000460-B2
Application number	US-202217735237-A
Country	US
Kind code	B2
Filing date	May 3, 2022
Priority date	May 3, 2021
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

Gear mechanism ( 1 ) having a toothing ( 5 ), a tooth carrier ( 11 ) accommodating a plurality of teeth ( 7 ) for engagement with the toothing, the teeth ( 7 ) being radially displaceable relative to the tooth carrier ( 11 ), a drive input with a profiling ( 22 ) for radially driving the teeth ( 7 ), and bearing segments ( 24 ) for mounting the teeth on the profiling. Each bearing segment includes a running side oriented in the direction of the profiling and a bearing side opposite the running side, a tooth bearing arranged on the bearing side for articulated mounting of at least one of the teeth, the tooth bearing including a bead which is at least substantially in the shape of a cylinder section and arranged from a first side edge to a second side edge of the bearing segment transverse to a running direction of the bearing segment. The bead is in a central region between the first and second side edges and has a first and/or second recess on a first and/or second side of the central region.

First claim

The invention claimed is:

1. Gear mechanism ( 1 ), having
a toothing ( 5 ),
a tooth carrier ( 11 ) in which a plurality of teeth ( 7 ) for engagement with the toothing are accommodated, wherein the teeth ( 7 ) are radially displaceably mounted relative to the tooth carrier ( 11 ),
a drive input element with a profiling ( 22 ) for radially driving the radially displaceably mounted teeth ( 7 ), and
bearing segments ( 24 ) for mounting the teeth on the profiling, wherein each of the bearing segments comprises:
a running side oriented in the direction of the profiling and a bearing side opposite the running side,
a tooth bearing, which is arranged on the bearing side, for articulated mounting of at least one of the teeth,
wherein the tooth bearing comprises a bead which is at least substantially in the shape of a cylinder section and which is arranged from a first side edge to a second side edge of the bearing segment in a direction transversely with respect to a running direction of the bearing segment, and
wherein the bead is arranged in a central region between the first side edge and the second side edge and has a first recess on a first side of the central region and/or has a second recess on a second side of the central region, wherein one holding ring ( 40 ) is provided per tooth, said holding ring at least partially surrounding a tooth base of the respective tooth ( 7 ), and wherein the holding ring, by engagement in the at least one recess, secures the respective bearing segment in its position transversely with respect to the revolving direction.

2. Gear mechanism according to claim 1 , wherein the gear mechanism is an axial gear mechanism or a linear gear mechanism.

3. Gear mechanism according to claim 1 , wherein, towards the recesses, the bead in each case has lateral flanks which run rectilinearly at least in sections in a circumferential direction and/or run circularly at least in sections.

4. Gear mechanism according to claim 1 , wherein a shoulder ( 42 ) for receiving the holding ring ( 40 ) is provided on the tooth base on an outer circumference of the tooth ( 7 ).

5. Gear mechanism according to claim 1 , wherein the teeth have a circular cross section.

6. Gear mechanism according to claim 1 , wherein the holding ring is annular.

7. Gear mechanism ( 1 ), having
a toothing ( 5 ),
a tooth carrier ( 11 ) in which a plurality of teeth ( 7 ) for engagement with the toothing are accommodated, wherein the teeth ( 7 ) are radially displaceably mounted relative to the tooth carrier ( 11 ),
a drive input element with a profiling ( 22 ) for radially driving the radially displaceably mounted teeth ( 7 ), and
bearing segments ( 24 ) for mounting the teeth on the profiling, wherein each of the bearing segments comprises:
a running side oriented in the direction of the profiling and a bearing side opposite the running side,
a tooth bearing, which is arranged on the bearing side, for articulated mounting of at least one of the teeth,
wherein the tooth bearing comprises a bead which is at least substantially in the shape of a cylinder section and which is arranged from a first side edge to a second side edge of the bearing segment in a direction transversely with respect to a running direction of the bearing segment, and
wherein the bead is arranged in a central region between the first side edge and the second side edge and has a first recess on a first side of the central region and/or has a second recess on a second side of the central region, wherein one holding ring ( 40 ) is provided per tooth, said holding ring at least partially surrounding a tooth base of the respective tooth ( 7 ), and wherein an outer circumference of the holding ring is rectilinear in sections.

8. Gear mechanism according to claim 1 , wherein, on the bearing side of the bearing segment, a first stop is formed between the first recess and the first side edge and/or a second stop is formed between the second recess and the second side edge.

9. Gear mechanism according to claim 1 , wherein the holding ring secures the bearing segment in its position transversely with respect to the revolving direction via the bead and/or by stops formed between the first recess and the first side edge and/or between the second recess and the second side edge.

10. Gear mechanism according to claim 1 , wherein the first recess extends to the first side edge and the second recess extends to the second side edge.

11. Gear mechanism according to claim 1 , wherein precisely one tooth is mounted on a bearing segment or precisely two teeth are mounted on a bearing segment.

12. Use of a gear mechanism according to claim 1 .

13. Gear mechanism according to claim 1 , wherein the first recess and/or the second recess is defined along the bead in the direction transversely with respect to the running direction of the bearing segment.

Assignees

• Wittenstein Se

Inventors

• Schreiber Heiko

Classifications

• F16H25/14 Primary

  with reciprocation perpendicular to the axis of rotation (crank or eccentric gearings without swinging connecting-rod F16H21/36) · CPC title

• F16H49/00 Primary

  Other gearings · CPC title

• F16H25/06 Primary

  with intermediate members guided along tracks on both rotary members · CPC title