Inline ratcheting mechanism

Patent metadata

Field	Value
Publication number	US-11548122-B2
Application number	US-202016859532-A
Country	US
Kind code	B2
Filing date	Apr 27, 2020
Priority date	Apr 27, 2020
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

An inline ratcheting mechanism for motorized hand tools that includes a drive body, a ratchet shaft, ratchet pawls, a reversing collar, and a reversing switch adapted to cause the reversing collar to engage or disengage the ratchet pawls with ratchet teeth of the ratchet shaft.

First claim

What is claimed is:

1. A tool comprising:
a driver assembly including:
a lug adapted to drive a work piece;
a drive body coupled to a drive body cap;
a ratchet shaft disposed in the drive body and including ratchet teeth;
first and second ratchet pawls adapted to move axially along the ratchet shaft to selectively engage the ratchet teeth; and
a reversing collar disposed between the first and second ratchet pawls and adapted to be selectively positioned in either one of first and second positions via a reversing switch, to thereby cause the first and second ratchet pawls to move axially along the ratchet shaft,
wherein when the reversing collar is disposed in the first position, the first pawl engages, and the second pawl disengages, the ratchet teeth, and when the reversing collar is disposed in the second position, the first pawl disengages, and the second pawl engages, the ratchet teeth.

2. The tool of claim 1 , further comprising one or more of a motor, a switch, and a status indicator.

3. The tool of claim 1 , wherein the tool is a motorized ratchet tool.

4. The tool of claim 1 , further comprising a housing assembly, wherein the driver assembly is coupled to the housing assembly, and wherein the housing assembly includes a clamshell housing having a first clamshell portion coupled to a second clamshell portion.

5. The tool of claim 4 , further comprising a motor coupled to the ratchet shaft and enclosed within the clamshell housing.

6. The tool of claim 1 , wherein the driver assembly further includes reversing rings coupled to the reversing switch, wherein when the reversing switch is actuated, the reversing rings cause the reversing collar to axially move along the ratchet shaft to selectively dispose the reversing collar in either one the first and second positions.

7. The tool of claim 1 , wherein the driver assembly further includes first and second biasing members,
wherein when the reversing collar is disposed in the first position, the reversing collar engages the second ratchet pawl, which compresses the second biasing member, and the first biasing member causes the first ratchet pawl to engage the ratchet teeth, and
wherein when the reversing collar is disposed in the second position, the reversing collar engages the first ratchet pawl, which compresses the first biasing member, and the second biasing member causes the second ratchet pawl to engage the ratchet teeth.

8. The tool of claim 7 , wherein the first and second biasing members are springs.

9. The tool of claim 1 , wherein the ratchet shaft is retained in the drive body by a retaining ring.

10. The tool of claim 1 , wherein each of the first and second ratchet pawls has a spline geometry that matingly corresponds to a spline disposed on an inner surface of the drive body.

11. The tool of claim 1 further comprising a shaft coupled to the drive body cap to selectively drive the lug in first and second directions.

12. A ratcheting mechanism for a tool, comprising:
a drive body cap;
a drive body coupled to the drive body cap;
a ratchet shaft disposed in the drive body and including ratchet teeth;
first and second ratchet pawls adapted to axially move along the ratchet shaft;
a reversing collar disposed between the first and second ratchet pawls and adapted to axially move the first and second ratchet pawls to selectively engage the ratchet teeth; and
a reversing switch adapted to selectively dispose the reversing collar in either one of first and second positions,
wherein when the reversing collar is disposed in the first position, the first pawl engages, and the second pawl disengages, the ratchet teeth, and when the reversing collar is disposed in the second position, the first pawl disengages, and the second ratchet pawl engages, the ratchet teeth.

13. The ratcheting mechanism of claim 12 , wherein the ratcheting mechanism is disposed in a housing assembly of the tool.

14. The ratcheting mechanism of claim 12 , wherein the ratcheting mechanism is disposed in a drive assembly of the tool.

15. The ratcheting mechanism of claim 12 , further comprising reversing rings coupled to the reversing switch, wherein when the reversing switch is actuated, the reversing rings cause the reversing collar to axially move along the ratchet shaft to selectively dispose the reversing collar in either one of the first and second positions.

16. The ratcheting mechanism of claim 12 , further comprising first and second biasing members,
wherein when the reversing collar is disposed in the first position, the reversing collar engages the second ratchet pawl, which compresses the second biasing member, and the first biasing member applies biasing force to the first ratchet pawl to cause the first ratchet pawl to engage the ratchet teeth, and
wherein when the reversing collar is disposed in the second position, the reversing collar engages the first ratchet pawl, which compresses the first biasing member, and the second biasing member applies biasing force to the second ratchet pawl to cause the second ratchet pawl to engage the ratchet teeth.

17. The ratcheting mechanism of claim 12 , further comprising a retaining ring adapted to retain the ratchet shaft in the drive body.

18. The ratcheting mechanism of claim 12 , wherein each of the first and second ratchet pawls has a spline geometry that matingly corresponds to a spline disposed on an inner surface of the drive body.

Assignees

• Snap On Incorporated

Inventors

• Schulz Ben T

Classifications

• B25B21/004 Primary

  of the ratchet type · CPC title

• B25B13/466 Primary

  the ratchet parts engaging in an axial direction · CPC title

• B25B13/481

  for operating in areas having limited access · CPC title

• B25B15/04

  with ratchet action · CPC title

• B25B21/002 Primary

  for special purposes · CPC title