Modular router with motor clamp

• US 8,066,041 B2
• Filed: 02/13/2009
• Issued: 11/29/2011
• Est. Priority Date: 02/13/2009
• Status: Active Grant

• Current Assignee: Credo Technology Corporation (Robert Bosch GmbH), Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Pozgay, David, Gonzalez, Arturo, Higashi, Erick
• Primary Examiner(s): SELF, SHELLEY M
• Application Number:
  US12/371,568
• Publication Number:
  US 20100206434A1
• Time in Patent Office: 1,019 Days
• Field of Search: 144/136.95, 144/154.5, 144/136.1, 409/182
• US Class Current: 144/136.95
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 29/49963 Threaded fastener
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]

Abstract

A routing machine comprises a base unit including an inner surface and a motor unit. The motor unit is releasably positioned in the base unit. The motor unit includes an outer surface engaging the inner surface of the base unit and a clamp mechanism moveable between a clamping position and a release position. The clamp mechanism is configured to apply a clamping force to the outer surface of the motor unit when in the clamping position. A moveable clamp adjustment member is positioned on the base unit. Movement of the clamp adjustment member, when the clamp mechanism is in the clamping position, adjusts the clamping force applied to the outer surface of the motor unit by the clamp mechanism.

Claims

1. A routing machine comprising:

a base unit including an inner surface;

a motor unit releasably positioned in the base unit, the motor unit including an outer surface engaging the inner surface of the base unit;

a clamp mechanism operatively connected to the base unit, the clamp mechanism being moveable between a clamping position and a release position, the clamp mechanism configured to apply a clamping force to the outer surface of the motor unit when the clamping mechanism is in the clamping position and the motor unit is positioned in the base unit; and

a moveable clamp adjustment member operatively connected to the clamp mechanism, wherein movement of the clamp adjustment member when the clamp mechanism is in the clamping position adjusts the clamping force applied to the outer surface of the motor unit by the clamp mechanism;

wherein the motor unit includes an electric motor and a rotatable drive shaft, the drive shaft including a coupling device configured to receive a router bit; and

wherein the clamp mechanism comprises a plurality of clamp members interconnected as a four-bar linkage.

2. The routing machine of claim 1 wherein the clamp members are configured to pivot about a plurality of pivot members and wherein the clamp adjustment mechanism is configured to move one of the pivot members in order to change the clamping force applied by the clamp mechanism.

3. The routing machine of claim 1 wherein the inner surface of the base unit applies the clamping force to the outer surface of the motor unit when the clamp mechanism is in the clamping position.

4. The routing machine of claim 3 wherein the inner surface of the base unit includes a flap portion, wherein the clamp mechanism causes the flap portion to apply the clamping force to the outer surface of the motor unit.

5. The routing machine of claim 1 wherein access to the adjustment member is blocked when the clamp mechanism is in the release position.

6. The routing machine of claim 1 wherein the adjustment member comprises a screw.

7. The routing machine of claim 6 wherein rotation of the screw shifts the position of a pivot axle in a channel of the base unit.

8. The routing machine of claim 6 wherein the screw is positioned in a lateral channel in the base unit and wherein the screw threadedly engages a nut positioned at the bottom of an axial channel in the base unit.

9. The routing machine of claim 8 wherein the screw and nut are comprised of steel and the inner surface of the base unit is comprised of aluminum.

10. A routing machine comprising:

a base unit including a substantially work engagement surface;

a motor unit configured to be releasably connected to the base unit, the motor unit including an electric motor having an output shaft, the output shaft including a coupling device configured to receive a router bit;

a clamp mechanism operatively connected to the base unit, the clamp mechanism being moveable between a clamping position and a release position, the clamp mechanism comprising a plurality of clamp members interconnected as a four-bar linkage arrangement, the clamp mechanism configured to apply a clamping force to the motor unit and secure the motor unit in the base unit when the clamp mechanism is in the clamping position; and

a clamp adjustment member operatively connected to the clamping mechanism, wherein the clamp adjustment member is moveable when the clamp mechanism is in the clamping position such that movement of the clamp adjustment member results in a change in the clamping force applied to the motor unit by the clamp mechanism.