Rear handle

Patent metadata

Field	Value
Publication number	US-10046451-B2
Application number	US-201514602695-A
Country	US
Kind code	B2
Filing date	Jan 22, 2015
Priority date	Jan 23, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A power tool includes a housing and a handle having two ends moveably mounted to the housing via respective mountings, at least one mounting comprising a passageway formed in one end of the handle and a rod attached at one end to the housing. The rod's shaft axially slides within the passageway, enabling the handle end to move relative to the housing. A cavity within the handle end adjacent the passageway receives the rod, which has a second end within the cavity. A flange mounted adjacent the rod's other end within the cavity, unable to pass through the passageway, moves within the cavity relative to the passageway as the handle's end moves relative to the housing. A biasing mechanism within the cavity, between an internal wall of the cavity and the second end of the rod, biases the flange towards the passageway, and the handle end away from the housing.

First claim

The invention claimed is:

1. A power tool comprising:
a housing; and
a handle having two ends, the first end being moveably mounted to the housing via a first mounting assembly, the second end being moveably mounted to the housing via a second mounting assembly;
wherein the first mounting assembly comprises:
a passageway formed within the first end of the handle adjacent the housing;
a cavity formed within the first end of the handle axially between the passageway and an internal wall of the handle axially intersecting a longitudinal axis of the passageway;
a rod including: a first end attached to the housing, a second end disposed within the cavity, a shaft extending from the first end to the second end through the passageway and axially slidable within the passageway to enable the first end of the handle to move towards or away from the housing, and a flange disposed on the shaft within the cavity at or near the second end, wherein the flange includes a first surface facing the passageway that prevents the flange from entering into the passageway and a second surface facing the internal wall of the handle, the flange being moveable within the cavity away from or towards the passageway as the first end of the handle moves towards or away from the housing; and
a biasing mechanism located within the cavity and having a first end engaging the internal wall of the handle and a second end engaging the second surface of the flange, wherein the biasing mechanism urges the flange towards the passageway in order to urge the first end of the handle away from the housing.

2. The power tool of claim 1 wherein the biasing mechanism is at least one helical spring.

3. The power tool of claim 2 wherein the spring rate of at least one helical spring is linear.

4. The power tool of claim 2 wherein the spring rate of at least one helical spring is progressive.

5. The power tool of claim 2 wherein the second end of the rod comprises a protrusion that supports the second end of the at least one spring.

6. The power tool of claim 1 wherein a cross sectional area of the passageway is greater than that of the shaft of the rod, the biasing mechanism urging the shaft of the rod towards the center of the cross section of the passageway.

7. The power tool of claim 1 wherein the second mounting assembly comprises a pivotal joint.

8. The power tool of claim 7 wherein the pivotal joint comprises a pin which pivotally connects the end of the handle to the housing, the pin having a longitudinal axis about the end of the handle pivots relative to the housing.

9. The power tool of claim 1 wherein there is provided a bellows located between the housing and one end of the handle which surrounds a part of the rod wherein, when the end of handle is moved towards the housing, part of the bellows is sandwiched between the end of the handle and the housing.

10. The power tool of claim 1 , wherein the second mounting assembly comprises: a first part mounted on the housing and a second part mounted on the one end of the handle, one part comprising a support, the other part comprising a pin, having a longitudinal axis, located within a passage formed in the support which is capable of being rotated in the passage to enable the end of the handle to rotate relative to the housing.

11. The power tool of claim 10 , wherein the passage is wider, in at least one direction, than the pin to allow the pin move sideways within the passage to enable the end of the handle to move linearly relative to the housing.

Assignees

• Black & Decker Inc

Inventors

• Roberts Ana-Maria
• Friedrich Andreas

Classifications

• B25D16/00

  Portable percussive machines with superimposed rotation {, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit (combined percussion and rotary drilling adapted for earth drilling E21B6/00)} · CPC title

• B25D2250/371

  Use of springs · CPC title

• B25D17/043 Primary

  Handles resiliently mounted relative to the hammer housing (B25D17/046 takes precedence) · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title