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Nodal spring assembly for an electronic toothbrush

A technology for electric toothbrushes, spring elements, applied in the direction of springs, low internal friction springs, springs/shock absorbers, etc.

Active Publication Date: 2012-12-05
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are several structural challenges to achieving the desired, reliable operation in the nodal spring structures described above

Method used

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  • Nodal spring assembly for an electronic toothbrush
  • Nodal spring assembly for an electronic toothbrush
  • Nodal spring assembly for an electronic toothbrush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see now figure 1 and 2 , shows a node drive train assembly portion of an electric toothbrush including an embodiment of the node mounting assembly disclosed herein. The nodal driveline assembly shown at 10 includes a front end portion 14 of an electromagnetic motor for driving a V-shaped torsion bar spring 15 . The remainder of the motor is located in the handle portion of the toothbrush (not shown). Such an electromagnetic motor arrangement is disclosed in US Patent No. 5,378,153, which belongs to the assignee of the present invention and the contents of which are incorporated herein by reference. At the other end of the driveline assembly 10 is a portion of a toothbrush head section 16 . In one configuration, the entire driveline assembly, including the brushhead assembly, is detachable and replaceable as a unit from the handle portion of the toothbrush; while in another configuration, the brushhead itself is in the drivetrain assembly Said distal end 17 of 10 is ...

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PUM

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Abstract

A nodal-mounted spring arrangement for an electronic toothbrush includes a V-shaped spring member secured at both ends so that it can operate in out-of-phase torsion mode along the axial dimension thereof. A mounting plate is connected between a node point along the V-shaped spring member and the housing of the toothbrush. A nodal assembly comprises a diamond shaped or round insert having an upper surface configured generally to fit flush with the lower surface of the V-shaped spring member, a V block shaped or flat shim member which is configured to mate the upper surface of the V-shaped spring member and the node spring, and an attachment member, such as a screw and nut combination, which tightly connects the mounting plate, the shim, the V-shaped spring member and the insert.

Description

technical field [0001] The present application relates generally to drivetrain components for electric toothbrushes, and more particularly to a nodal spring arrangement for such a drivetrain. Background technique [0002] Various drive train arrangements for electric toothbrushes are well known. The drive train portion of the toothbrush responds to motor action including mechanical, electromechanical, magnetic or other action to drive the brush head in a reciprocating manner. One type of drive train arrangement employs a spring fixedly mounted at both ends and a node located between the ends of the spring, more typically in the middle. When the drive action energizes the spring in its desired out-of-phase torsional mode, it produces the desired reciprocating brush head action through the selected angle. [0003] In one configuration, the node mounted torsion springs are V-shaped with nodes connected to the housing by mounting plates. In this configuration, the mounting pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/02A61C17/34
CPCF16F1/16F16F1/025F16F1/14A61C17/34A61C17/3418F16F1/02
Inventor G·J·乔恩格M·A·A·沙利格R·珠斯玛M·斯塔佩尔布罗克T·克洛斯特S·霍尔P·黑德斯特罗姆
Owner KONINK PHILIPS ELECTRONICS NV