Modular router with secondary release lever

• US 7,931,054 B2
• Filed: 02/13/2009
• Issued: 04/26/2011
• Est. Priority Date: 02/13/2009
• Status: Active Grant

• Current Assignee: Credo Technology Corporation, Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Higashi, Erick, Pozgay, David
• Primary Examiner(s): SELF, SHELLEY M
• Application Number:
  US12/371,567
• Publication Number:
  US 20100206433A1
• Time in Patent Office: 802 Days
• Field of Search: 144/136.95, 144/154.5, 409/182, 409/206, 409/210, 409/214, 409/218
• US Class Current: 144/136.95
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]
• CPC Class Codes: Y10T 409/308176 with position indicator or limit means
• CPC Class Codes: Y10T 409/3084 with position indicator or limit means
• CPC Class Codes: Y10T 409/308624 with limit means to aid in positioning of cutter bit or work [e.g., gauge, stop, etc.]

Abstract

A routing machine comprises a base unit and a motor unit, which is releasably connected to the base unit. The motor unit defines a motor axis is configured for insertion into the base unit substantially in the direction of the motor axis. A depth adjustment latch is provided on the base unit. A release latch is provided on the base unit. The release latch is moveable between a first position and a second position. The release latch is configured to provide a positive stop for the motor unit when the release latch is in the first position, such that the motor unit is blocked from release from the base unit while allowing the motor unit to move along the motor axis. The motor unit is free to release from the base unit when the release latch is in the second position.

Claims

1. A routing machine comprising:

a base unit;

a motor unit comprising an electric motor, an output shaft, and an outer surface, the motor unit releasably received by the base unit, the output shaft defining an axial direction on the routing machine;

an elongated tapered groove extending in an axial direction along the outer surface of the motor unit, wherein the depth of the elongated tapered groove gradually increases from an upper end of the outer surface to a lower end of the outer surface; and

a release catch mounted on the base unit and movable on the base unit between a first position and a second position, the release catch extending into the elongated tapered groove when the release catch is in the first position and the release catch removed from the elongated tapered groove when the release catch is in the second position.

2. The routing machine of claim 1 wherein a finger of the release catch enters the tapered groove and engages an inclined surface of the tapered groove when the motor unit is received by the base unit.

3. The routing machine of claim 2 wherein the release catch finger includes a chamfered edge.

4. The routing machine of claim 3 wherein the motor unit includes a chamfered rim configured to engage the chamfered edge of the release catch finger when the motor unit is received by the base unit, wherein engagement of the chambered rim with the chamfered edge of the release catch finger forces the release catch finger to move away from the motor unit.

5. The routing machine of claim 2 wherein the release catch is pivotably mounted on the base unit and wherein the finger of release catch is biased toward an interior of the base unit such that the finger of the release catch is biased toward the elongated tapered groove when the motor unit is received by the base unit.

6. The routing machine of claim 5 further comprising a spring configured to bias the finger of the release catch toward the interior of the base unit, wherein the spring is configured to urge the release catch against the inclined surface of the tapered groove with a progressively greater force as the motor unit is received by the base unit and moved progressively further into the base unit.

7. The routing machine of claim 5 wherein the base unit includes an interior wall with a notch, wherein the release catch finger is biased toward the notch and is configured to move in and out of the notch when the release catch moves between the first position and the second position.

8. The routing machine of claim 1 wherein the base unit further comprises a motor depth adjustment latch configured to engage one of a plurality of slots in the motor unit.

9. The routing machine of claim 8 wherein the base unit further comprises a clamp mechanism configured to clamp the motor unit to an interior portion of the base unit.

10. The routing machine of claim 1 wherein a shoulder is defined at an end of the tapered groove and wherein the release catch is positioned clear of the shoulder when the release catch is in the second position and the motor unit is released from the base unit.

11. A routing machine comprising:

a base unit;

a motor unit releasably connected to base unit, wherein the motor unit defines a motor axis and the motor unit is configured for insertion into the base unit substantially in the direction of the motor axis;

a depth adjustment latch provided on the base unit, the depth adjustment latch configured to retain the motor unit in one of a plurality of different positions relative to the base unit along the motor axis, wherein the depth adjustment latch is moveable on the base unit in a direction parallel to the motor axis following engagement with the motor unit such that movement of the depth adjustment latch in the direction parallel to the motor axis also results in movement of the motor unit along the motor axis; and

a release latch provided on the base unit, the release latch moveable between a first position and a second position, wherein the release latch is configured to provide a positive stop for the motor unit when the release latch is in the first position such that the motor unit is blocked from release from the base unit while allowing the motor unit to move along the motor axis, and wherein the motor unit is free to release from the base unit when the release latch is in the second position.

12. The routing machine of claim 11 wherein the release latch comprises a release lever configured to pivot on the base unit between the first position and the second position.

13. The routing machine of claim 12 wherein the release lever includes a finger configured to extend through a slot on the base unit when the release latch is in the first position.

14. The routing machine of claim 11 wherein the motor unit includes an elongated tapered groove extending substantially parallel to the motor axis along an outer surface of the motor unit.

15. The routing machine of claim 14 wherein the release latch comprises a release lever configured to engage the elongated tapered groove when the release latch is in the first position.

16. The routing machine of claim 15 wherein the release lever is configured to abut a shoulder provided at an end of the elongated tapered groove when the release latch is in the first position.

17. The routing machine of claim 16 wherein the release lever is removed from the tapered groove clear of the shoulder when the release latch is in the second position such that the motor unit may be removed from the base unit.

18. The routing machine of claim 11 wherein the depth adjustment latch includes a protuberance configured to engage one of a plurality of notches aligned substantially parallel to the motor axis on an outer surface of the motor unit.

19. The routing machine of claim 11 wherein the wherein the base unit further comprises a clamp mechanism configured to clamp down on an outer surface of the motor unit and prevent the motor unit from moving relative to the base unit along the motor axis.

20. A routing machine comprising:

a base unit;

a motor unit releasably connected to base unit, wherein the motor unit defines a motor axis and the motor unit is configured for insertion into the base unit substantially in the direction of the motor axis;

a depth adjustment lever provided on the base unit, the depth adjustment lever configured to releasably engage one of a plurality of aligned notches in an outer surface of the motor unit and retain the motor unit in one of a plurality of different positions relative to the base unit along the motor axis, wherein the depth adjustment lever is moveable on the base unit following engagement with the motor unit such that movement of the depth adjustment lever parallel to the motor axis also results in movement of the motor unit along the motor axis; and

a release lever provided on the base unit, the release lever pivotable between a first position and a second position, wherein the release lever is configured to engage an elongated tapered groove on the outer surface of the motor unit when the release lever is in the first position, engagement of the release lever with the elongated tapered groove blocking release of the motor unit from the base unit without blocking movement of motor unit along the motor axis, and wherein the release lever is removed from the tapered groove when the release lever is in the second position such that the motor unit may be removed from the base unit.