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Support assembly for output shaft of reciprocating power tool

A technology for supporting components and power tools, applied in the direction of manufacturing tools, bearing assembly, bearing components, etc., can solve the problem of difficult jigsaw saw blades to leave the expected cutting line, etc.

Inactive Publication Date: 2005-11-23
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this jigsaw is that there is no further support for the jigsaw blade near the base plate of the jigsaw placed on the workpiece being cut, with the result that it is difficult to minimize the displacement of the jigsaw blade away from the intended line of cut

Method used

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  • Support assembly for output shaft of reciprocating power tool
  • Support assembly for output shaft of reciprocating power tool
  • Support assembly for output shaft of reciprocating power tool

Examples

Experimental program
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Embodiment Construction

[0049] Referring to FIG. 1 , the jigsaw 2 has a housing 4 comprising two shell-like halves 6 (only one shown in FIG. 1 ) forming a handle 8 having a start switch 10 for manipulating a motor 12. Power is supplied via cable 14 . A base plate 16 for placement on a workpiece (not shown) is located in the lower portion of the housing 4, and a jigsaw blade 18 ( figure 2 ) is connected to the lower end of the output shaft 20 by the saw blade clamping mechanism 22. The operation of the blade clamping mechanism 22 is not relevant to the understanding of the present invention and thus will not be described in detail here. The orientation of the base plate 16 can be adjusted relative to the housing 4 to enable bevel cutting and can be secured with clamping screws 24 operated by a locking mechanism 26, which is also not relevant to the understanding of the invention and therefore will not be described in detail here.

[0050]The motor 12 drives a shaft 28 carrying a fan 30 . As the fan...

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PUM

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Abstract

A support assembly (62) for an output shaft (20) of a jigsaw is disclosed. The support assembly (62) comprises a support housing (64), a lower bearing (102) arranged in the support housing and adapted to support an output shaft (20) of the jigsaw for reciprocating movement of the output shaft along a first axis relative to the lower bearing and to substantially prevent movement of the output shaft (20) relative to the lower bearing (102) in a direction transverse to the first axis, and a blade support roller (110) adapted to abut a jigsaw blade (18). A support arm 108 supporting the blade support roller (110) is adapted to pivot to a limited extent relative to the lower bearing (102) about at least one second axis transverse to the first axis to minimise the extent to which a force applied by the jigsaw blade (18) to the blade support roller (110) during cutting action causes the lower bearing (102) to apply a turning moment to the output shaft (20) about an axis transverse to the first axis.

Description

technical field [0001] The present invention relates to a support assembly for an output shaft of a reciprocating power tool, and in particular, but not limited to, a support assembly for a reciprocating power tool having a scrolling mode (i.e., wherein the output shaft supporting the jigsaw blade can be positioned relative to the jigsaw housing. Rotation about its longitudinal axis) and orbital mode (i.e., wherein the output shaft is pivotable relative to the housing about an axis transverse to its longitudinal axis so as to superimpose an oscillating mode on the axial reciprocation of the jigsaw blade) Support assembly for the output shaft. Background technique [0002] A wire saw having a scroll mode and an orbital mode is disclosed in EP0158325. A disadvantage of this jigsaw is that there is no further support for the jigsaw blade near the base plate of the jigsaw placed on the workpiece being cut, with the result that it is difficult to minimize the displacement of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D49/00B23D49/16B23D51/02B23D51/10B23D51/16B27B3/12B27B19/09F16C41/00
CPCB23D49/165B23D49/167B23D49/16B23D51/025B23D51/02
Inventor 菲尔·米利翁
Owner BLACK & DECKER INC
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