Systems for transmission

Patent metadata

Field	Value
Publication number	US-11713808-B1
Application number	US-202217654044-A
Country	US
Kind code	B1
Filing date	Mar 8, 2022
Priority date	Mar 8, 2022
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

Methods and systems are provided for a transmission housing of a vehicle. In one example, a system comprises a transmission housing comprising at least one cover configured to support a shift fork, wherein the at least one cover is removable from an exterior of the transmission housing.

First claim

The invention claimed is:

1. A system, comprising:
a transmission that includes a transmission housing and at least one cover configured to pivotally engage with and support a shift fork, wherein the at least one cover is removable from an exterior of the transmission housing, the at least one cover includes a pair of locating elements each of which is insertable into a corresponding feature of the transmission housing, and the at least one cover is removably attached to a window opening cut-out in a side of the transmission housing via a plurality of fasteners spaced about a periphery of the cover, and wherein the at least one cover is sized and arranged so as to sealingly engage with the window opening cut-out in the side of the transmission housing when attached using the plurality of fasteners.

2. The system of claim 1 , wherein the at least one cover is a first cover, the transmission housing further comprising a second cover.

3. The system of claim 2 , wherein the first cover and the second cover support opposite ends of the shift fork.

4. The system of claim 3 , wherein the first cover supports a first pivot point of the shift fork via a first bushing and the second cover supports a second pivot point of the shift fork via a second bushing.

5. The system of claim 1 , wherein the shift fork comprises a length greater than a diameter of an opening of a transmission housing.

6. The system of claim 1 , wherein the transmission further comprises a position sensor, and wherein the shift fork is a single piece and comprises a position sensor target coupled to the position sensor.

7. A system for a transmission of a vehicle, comprising:
a first shift fork and a second shift fork arranged within a transmission housing of the transmission; and
a first cover arranged at a first side of the transmission housing and a second cover arranged at a second side of the transmission housing, the second side opposite the first side; wherein
the first cover and the second cover each comprise a plurality of bushings to support a shaft of each of the first shift fork and the second shift fork, wherein each of the first cover and the second cover includes a pair of locating elements each of which is insertable into a corresponding feature of the transmission housing, and each of the first cover and the second cover is removably attached to a respective window opening cut-out in a side of the transmission housing via a plurality of fasteners spaced about a periphery of the cover, and wherein each of the first cover and the second cover is sized and arranged so as to sealingly engage with the respective window opening cut-out in the side of the transmission housing when attached using the plurality of fasteners.

8. The system of claim 7 , wherein the plurality of bushings of the first cover support a first extreme end of the shaft of the first shift fork and a second extreme end of the shaft of the second shift fork.

9. The system of claim 8 , wherein the plurality of bushings of the second cover support a second extreme end of the shaft of the first shift fork and a first extreme end of the shaft of the second shift fork.

10. The system of claim 7 , wherein a distance between the first cover and the second cover is greater than a length of the shaft of the first shift fork and the second shift fork.

11. The system of claim 7 , wherein the first cover and the second cover are arranged at openings on the first side and the second side of the transmission housing.

12. The system of claim 7 , further comprising an opening in the transmission housing, wherein a diameter of the opening is less than a length of the first shift fork and the second shift fork.

13. The system of claim 7 , wherein each locating element is configured to retain the first cover or the second cover to the transmission housing without the plurality of fasteners.

14. The system of claim 7 , further comprising a first position sensor coupled to a position sensor target of the first shift fork and a second position sensor coupled to a position sensor target of the second shift fork.

15. The system of claim 7 , wherein the first cover and the second cover are identical in size and shape, and wherein the first cover and the second cover are removable and separate from the transmission housing.

16. A transmission, comprising:
a housing having an opening therein, with the opening including a diameter;
a first shift fork arranged within the housing, the first shift fork comprising a length greater than the diameter, the length measured along a shaft of the first shift fork;
a second shift fork arranged within the housing, the second shift fork comprising a length greater than the diameter, the length measured along a shaft of the second shift fork; and
a first cover arranged at a first side opening of the housing and a second cover arranged at a second side opening of the housing, a distance between the first side opening and the second side opening being greater than the length of the shaft of the first shift fork and the second shift fork, wherein the first cover and the second cover each comprise a plurality of bushings configured to interface with both the shaft of the first shift fork and the second shift fork, wherein each of the first cover and the second cover includes a pair of locating elements each of which is insertable into a corresponding feature of the housing, and the first cover and the second cover are removably attached, via a plurality of fasteners, to the first side opening and the second side opening, respectively, and wherein each of the first cover and the second cover is sized and arranged so as to sealingly engage with the respective first side and second side openings of the housing when attached using the plurality of fasteners.

17. The transmission of claim 16 , wherein the first cover is physically coupled to the housing and seals the first side opening, and wherein the second cover is physically coupled to the housing and seals the second side opening.

18. The transmission of claim 16 , wherein the first cover and the second cover are removable, and wherein the plurality of bushings is removed with the first cover and the second cover.

19. The transmission of claim 16 , wherein the first cover and the second cover are physically coupled to the housing via a plurality of fasteners, wherein the plurality of fasteners is accessible from outside of the housing.

20. The transmission of claim 16 , wherein each locating element is configured to mate with the housing and position the respective first shift fork or the second shift fork to a desired location.

Assignees

• Dana Heavy Vehicle Sys Group

Inventors

• Leber Mark W
• Vailliencourt Robert L
• Hall Justin
• Corn Langston H
• Cook Michael D
• Smith Shane T

Classifications

• F16H57/031 Primary

  characterised by covers or lids for gearboxes · CPC title

• F16H63/32 Primary

  Gear shift yokes, {e.g. shift forks} · CPC title

• F16H2063/321

  characterised by the interface between fork body and shift rod, e.g. fixing means, bushes, cams or pins · CPC title

• F16H2063/322

  characterised by catches or notches for moving the fork · CPC title

• F16H2063/325

  Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve · CPC title