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Free fall sensor

A sensor and container technology, applied in the field of drop sensors, can solve the problems of reduced elastic force, dirty electrodes, and oxide film generation

Inactive Publication Date: 2005-10-19
UBUKATA IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that dirt is generated between the electrodes or an oxide film is generated during long-term use, and a stable circuit may not be formed
Especially when it is further miniaturized, since the elastic force tends to decrease and the contact pressure tends to decrease, there is also a problem of being more disadvantageous in practical use.

Method used

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Embodiment Construction

[0040] Below, refer to Figure 1 to Figure 5 A first embodiment of the present invention will be described.

[0041] in, figure 1 It is a cross-sectional view showing the overall structure of the drop sensor 1, showing a normal use state (stationary state), figure 2 It is the equivalent of the action state at the time of falling of different states figure 1 the picture, image 3 is along figure 2 The cut-off of line A-A shows the cutaway view. First, the structure of the drop sensor 1 will be described with reference to these drawings.

[0042] like figure 1 As shown, the drop sensor 1 is housed in a portable computer (not shown) such as a notebook computer, for example, in a state of being horizontally arranged. The drop sensor 1 generally includes: an elongated cylindrical container 2; a sealing member 3, which electrically insulates and airtightly seals the opening at one end of the container 2; a conductive pin 4, which passes through the sealing member 3 in an ai...

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Abstract

The invention relates to a free fall sensor (1) which is formed by arranging a movable electrode (5) inside an electrically conductive container (2). The invention comprises a coil spring (9) whose base end (9a) is fixedly connected at the internal end of an electrically conductive pin (4) positioned inside the container (2) through an electrically conductive adhesive, and is supported by a single arm. A plurality of balls (10) can move at the internal side of the coil spring (9) and is arranged at the internal side of the coil spring (9) with a release-stop state so as to fix with the coil spring (9).

Description

technical field [0001] The present invention relates to a drop sensor for detecting a dropped state. Background technique [0002] Currently, in order to prevent damage to the hard disk built in a portable computer or other device due to the impact of a drop, a drop sensor that detects the dropped state is incorporated in the device. In such a configuration, countermeasures such as moving the magnetic head of the hard disk to the retracted position based on the detection signal of the drop sensor are taken. [0003] In order to incorporate the drop sensor inside the device, it is required to be miniaturized. An example of such a drop sensor is described in Japanese Unexamined Patent Publication No. 2000-195206 (hereinafter referred to as Patent Document 1). The drop sensor includes: a conductive cylindrical container, which has the function of fixing the electrode; a rod-shaped spring part, which is connected to one end of a conductive pin, and the other end of the conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/135G11B19/04H01H35/14
CPCG01P15/135G11B19/04H01H35/14G11B21/12
Inventor 武田照之孙彪
Owner UBUKATA IND CO LTD
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