JP2009026503A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic equipment which shows in an appearance that an electrostatic counter-measure is applied and is capable of improving electrostatic breakdown voltage performance. <P>SOLUTION: It is desirable that static electricity reaches a ground installed in the inside 7b of an upper case 7 before it reaches a circuit board 16 when a finger of a user pushing a button switch 9 is charged with static electricity. By installing a conductive member 11, the static electricity flown from the finger of a human becomes easy to reach the ground in the inside 7b of the upper case 7 through the conductive member 11 and a risk of having an error operation can be reduced. Further, since the conductive member 11 is installed in a visible state around the button switch 9, it can show the user that an electrostatic countermeasure is applied on the electronic equipment 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device, and more particularly to countermeasures against static electricity.

In electronic devices, there are places where human hands often touch such as switches and connectors. In order to prevent damage to electronic components due to static electricity, as a general method of countermeasures against static electricity, the frame of the electronic device casing before static electricity applied to the electronic device from the outside jumps to the circuit board in the electronic device. There is a method of skipping to GND. Japanese Patent Application Laid-Open No. H10-228561 discloses an electrical component in which an arc-shaped conductive portion is provided near the outer periphery of the lower surface of the rotary knob body, and a conductive protrusion is formed on the base so as to be brought into close contact with each other to prevent static electricity. A part of the rotating body is arranged so as to protrude outward from the opening of the cabinet, and the static electricity that jumps from the opening of the cabinet is dropped into the conductive part, so that the static electricity that has fallen into the conductive part becomes the ground pattern of the printed circuit board. It seems to escape.
JP 11-144922 A

  However, in the case of the above system, since static electricity is released to the ground pattern of the printed circuit board, there is a problem that the static electricity may fly to electronic components on the printed circuit board and cause malfunction. Further, in the above method, the user cannot know from the appearance that countermeasures against static electricity are taken. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electronic device capable of improving the electrostatic withstand voltage performance while showing externally that countermeasures against static electricity are taken.

  In order to achieve the above object, an electronic apparatus according to the present invention includes a casing having an upper surface, an operation unit provided on the upper surface, a ground unit provided in the housing, and the vicinity of the operation unit on the upper surface. A conductive member electrically connected to the ground portion, the conductive member passing through the upper surface of the casing from the end portion and exposed to the upper surface. And a trunk portion extending to the top.

  ADVANTAGE OF THE INVENTION According to this invention, while showing the external appearance that the countermeasure against static electricity is made | formed, the electronic device which can improve an electrostatic withstand voltage performance can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing an electronic apparatus according to an embodiment of the present invention. The electronic device 1 includes a housing 2, and a display unit 3 is rotatably attached to the housing 2 via a hinge portion 4. The display unit 3 is rotatable between an open position where the upper surface 2a of the housing 2 is opened and a closed position where the upper surface 2a of the housing 2 is covered. A display device composed of an LCD (Liquid Crystal Display) 3a is incorporated in the display unit 3. A circuit board on which a plurality of electronic components are mounted is accommodated in the housing 2. A touch pad 5 and a keyboard 6 are attached to the upper surface 2 a of the housing 2. The housing 2 includes an upper case 7 and a lower case 8 made of a resin or a metal such as magnesium alloy, and a circuit board (to be described later) on which a plurality of electronic components are mounted is accommodated in the housing 2. A plurality of button switches 9 for operation are provided on the upper surface 7a of the upper case 7 of the housing 2.

  FIG. 2 is a cross-sectional view showing the inside of the electronic apparatus according to the embodiment of the present invention. FIG. 3 is a diagram showing an operation unit according to the embodiment of the present invention. In FIG. 3, one of the four button switches 9 shown in FIG. 1 is shown as a representative.

  The inner surface 7b of the upper case 7 is applied with a conductive coating as necessary and used as a ground. From the upper surface 7a of the upper case 7, it is provided so that the edge part 11a of the electrically-conductive member 11 may protrude from the upper surface 7a. The end portion 11a can be formed in, for example, a hemispherical shape or a cylindrical shape.

  For example, copper or stainless steel is used for the conductive member 11. The conductive member 11 is provided with a body portion 11b that is in electrical contact with the inner surface 7b of the upper case 7 on which conductive coating is applied. The conductive member 11 is preferably provided such that the distance A from the button switch 9 to the end portion 11 a is smaller than the distance B from the button switch 9 to the circuit board 16. Further, the conductive member 11 is fixed by a screw 14 via a boss 13 provided on the inner surface 7 b of the upper case 7. In addition to using the boss 13 and the screw 14, the conductive member 11 may be fixed using welding or the like.

  A plurality of bosses 15 are provided on the inner surface 8 a of the lower case 8. A screw hole (not shown) is provided in the circuit board 16, and the lower case 8 and the circuit board 16 are screwed by a screw 17 through a boss 15. An electronic component 18 is mounted on the upper surface 16 a of the circuit board 16. The circuit board 16 is provided with a switch component 19, and when the user presses the button switch 9, the lower surface 9 a of the button switch 9 and the upper surface 19 a of the switch component 19 come into contact with each other. The action assigned to is performed.

  When the finger of the user who presses the button switch 9 is charged with static electricity, it is desirable to fly to the ground provided on the inner surface 7 b of the upper case 7 before the static electricity reaches the circuit board 16. When the housing 2 is thinned due to the thinning of the electronic device 1, static electricity easily reaches the circuit board 16 from the finger of the user who presses the button switch 9, but by providing the conductive member 11 as in the present embodiment. Static electricity flying from a person's finger can easily reach the ground of the inner surface 7 b of the upper case 7 through the conductive member 11. If the operating voltage of the electronic device is lowered in the future, it may become sensitive to voltage fluctuations and malfunction due to the influence of static electricity. However, the static electricity flying from the user's finger as in this embodiment is By making it easier to reach the ground of the inner surface 7b, the risk of malfunction can be reduced. Further, in the present embodiment, since the conductive member 11 is provided so as to be visible around the button switch 9, it can be shown to the user that the electronic device 1 has a countermeasure against static electricity.

  According to the present embodiment, it is possible to provide an electronic device capable of showing an external appearance that countermeasures against static electricity are taken and improving electrostatic withstand voltage performance.

  FIG. 4 is an external perspective view showing an operation unit of an electronic apparatus according to another embodiment of the present invention. FIG. 5 is a view showing a cross section of an operation unit of an electronic apparatus according to another embodiment of the present invention. In the following description, the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description is omitted.

  The conductive member 11 may be provided on the touch pad 5. The touch pad 5 has a rectangular operation region 5a and an outer peripheral portion 5b provided with a step with the operation region 5a, and an end portion 11a of the conductive member 11 is provided along the outer peripheral portion 5b. There is a gap between the operation area 5a of the touchpad 5 and the outer peripheral portion 5b. When the finger of the user who operates the touch pad 5 is charged with static electricity, it is desirable to fly to the ground provided on the inner surface 7 b of the upper case 7 before the static electricity reaches the circuit board 16. By providing the end portion 11a of the conductive member 11 on the outer peripheral portion 5b of the touch pad 5 as in the present embodiment, static electricity flying from a human finger passes through the conductive member 11 to the ground of the inner surface 7b of the upper case 7. Easier to reach. In the present embodiment, since the conductive member 11 is provided so as to be visible along the outer peripheral portion 5b of the touch pad 5, it can be shown to the user that the electronic device 1 has a countermeasure against static electricity. .

  According to the present embodiment, it is possible to provide an electronic device capable of showing an external appearance that countermeasures against static electricity are taken and improving electrostatic withstand voltage performance.

  As described above, by providing the conductive end portion for countermeasure against static electricity around the operation section such as the button switch and the touch pad, the user can recognize at first glance that the countermeasure against static electricity is taken on the electronic device. .

  By providing a conductive end connected to the GND of the housing around the operation unit such as button switches and touchpads, so that static electricity carrying a human finger actively flows to the conductive end, It is possible to expect an improvement in pressure resistance.

  According to the embodiment of the present invention, it is possible to provide an electronic device capable of improving the electrostatic withstand voltage performance while showing on the appearance that countermeasures against static electricity are taken.

  The present invention is not limited to the above embodiment as long as it does not depart from the gist of the present invention, and various modifications are possible.

1 is an external perspective view showing an electronic apparatus according to an embodiment of the present invention. Sectional drawing which shows the inside of the electronic device which concerns on embodiment of this invention. The figure which shows the operation part which concerns on embodiment of this invention. The external appearance perspective view which shows the operation part of the electronic device which concerns on other embodiment of this invention. The figure which shows the cross section of the operation part of the electronic device which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic device, 2 ... Housing | casing, 3 ... Display unit, 4 ... Hinge part, 5 ... Touchpad, 5a ... Operation area, 5b ... Outer peripheral part, 6 ... Keyboard, 7 ... Upper case, 8 ... Lower case, 9 ... button switch, 11 ... conductive member, 16 ... circuit board, 18 ... electronic component, 19 ... switch component

Claims (4)

A housing having an upper surface;
An operation unit provided on the upper surface;
A ground portion provided inside the housing;
A conductive member provided in the vicinity of the operation portion on the upper surface and electrically connected to the ground portion; the conductive member exposed at the upper surface; and the upper surface of the housing from the end portion An electronic device comprising: a body portion that extends through the housing and extends into the housing.   The electronic device according to claim 1, wherein at least a part of the body portion of the conductive member is electrically connected to the ground portion inside the housing.   The electronic device according to claim 1, wherein at least two end portions are provided so as to surround the operation unit.   The said operation part has a rectangular-shaped operation area | region and the outer peripheral part provided with a level | step difference with the said operation area | region, The said edge part is provided along the outer peripheral part on the said rectangle. Electronics.

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