JPH07207994A - Key with electric discharge grip part - Google Patents

Abstract

PURPOSE:To give an optimum resistance value to a grip part including a nip part of metal key, and enable static electricity discharge with the minimum number of parts speedily and with low shock to be carried out. CONSTITUTION:In a key 100 with an electric discharge girp part having an electric discharge grip part 2 including a nip part of a metal key 1, the grip part 2 is formed of conductive material dispersed in resin or rubber and the resin or rubber, and the resistance value between the outer surface of the grip part 2 and the key 1 under a condition the key 1 is set is set to be 0.1 to 100 mega ohms with the application voltage of 1000 volts. The grip 2 and the key 1 are connected via a neon lamp 8 and static electricity charged on a human body is discharged to earth through the lamp 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key with a discharge handle capable of appropriately discharging static electricity charged on a human body through a metal key.

[0002]

2. Description of the Related Art In order to discharge static electricity charged on the human body, a key made of a semi-conductive material is attached to a knob of a metal key (Actual No. 62-137974, No. 63-16).
9669) has been proposed. Also, in order to detect the electrified state, a neon lamp is incorporated into the handle covered with the metal key knob to make it emit light during discharging (Actually, Sho 62-
No. 194874, No. Kaikai 2-107671) are also proposed.

[0003]

However, in the conventional key with the discharge handle, since there is no technical idea of giving the key handle with the optimum electric resistance for reducing the impact at the time of discharging static electricity, the discharge is short. There were drawbacks such as shock being generated over time and discharging taking too long. Further, since no idea has been made to combine the neon lamp and the semi-conductive material of the handle, there are problems such that the discharge state cannot be accurately recognized and the number of necessary parts is large.
An object of the present invention is to provide a key with an electric discharge handle that gives an optimum resistance value to a handle that encloses a knob part of a metal key and that can discharge static electricity quickly and with low impact with a minimum number of parts. An object of the invention described in claim 2 is to provide a key with a discharge handle in which a neon lamp and a semi-conductive material of the handle are advantageously combined, and the discharge state can be accurately recognized with the minimum number of parts. An object of the invention according to claim 3 is to provide a key with a handle in which a light emitting element is incorporated in the handle to improve the visibility of the keyhole in a dark place such as at night.

[0004]

According to the present invention, there is provided a key with a discharge handle attached so as to wrap a knob of a metal key, wherein the discharge handle has a conductive substance dispersed in resin or rubber. It is characterized in that the resistance value between the outer surface of the formed metal key with the metal key attached and the metal key is 0.1 to 100 megohm at an applied voltage of 1000 volts. According to the second aspect of the present invention, the discharge handle and the metal key are connected via the neon lamp attached to the discharge handle, and the static electricity charged on the human body is discharged to the ground via the neon lamp. According to the third aspect of the present invention, the battery and the switch that is closed by compressing the discharge handle are installed inside the discharge handle, and the light emitting element is attached to the surface exposed and connected to the battery and the switch.

[0005]

According to the present invention, the static electricity charged on the human body is 0.1 to 100 at an applied voltage of 1000 volts.
Since it is discharged through a proper resistance of megohm,
The shock at the time of discharge can be surely reduced, and the discharge can be performed quickly. In the structure according to the second aspect, by incorporating only the neon lamp in the semiconductive handle, the discharge state at the time of discharge can be visually recognized, and the completion of the discharge can be recognized. In the structure according to the third aspect, the keyhole can be easily recognized by compressing the knob and causing the light emitting element to emit light in a dark place such as at night, and the usability of the key can be improved.

[0006]

1 to 3 show a key 100 with an electric discharge handle for an automobile according to an embodiment of the present invention. The key 100 with a discharge handle includes a metal key 1, a discharge handle 2 covered by a knob 11 of the metal key 1, and insulating sheets 3 and 3 interposed between the knob 11 and the discharge handle 2. Consists of. A hole 31 for electrical conduction is provided on the tip side of the lower insulating sheet 3.
Is empty. The discharge handle 2 has an egg-shaped plane shape in which a tip 21 is flatly cut out and a through hole 22 is provided in a rear portion, and carbon powder, which is a conductive substance, is added to a polyamide resin to impart semiconductivity. It becomes. The resistance value of the discharge handle 2 is 10 in the thickness direction between the outer surface and the knob 11.
The applied voltage of 00 volts is set to be 0.1 to 100 megohms. The discharge handle 2 may be formed of resin or rubber of other material such as ABS resin, and metal powder or conductive ceramic powder such as B ₄ C, SiC, TiC may be used as the conductive material.

In this embodiment, the discharge handle 2 includes a resin-made upper plate 4 and a resin-made lower plate 5 each having an egg-shaped flat surface with a notched tip, with the insulating sheet 3 and 3 interposed therebetween.
1 are overlapped so as to allow a slight displacement, and are fixed by fitting four protrusions 23 provided on the lower surface of the upper plate 4 and four holes 24 provided on the upper surface of the lower plate 5. . Upper plate 4
Has a recess 41 on which the knob 11 is fitted with a gap 40. The portion of the recess 41 facing the tip 21 of the discharge handle 2 communicates with the outside, and the key projection hole 4
2, and an edged step 43 is provided around the outer peripheral portion of the upper plate 4 other than the protruding hole 42. The ceiling wall 44 of the recess 41 is formed thin, and when the discharge handle 2 is pressed from the outside with a finger, the discharge handle 2 is elastically deformed and recessed, and the gap 40 disappears.

The lower plate 5 is provided with an edge protrusion 51 which is fitted around the edge step 43 on the outer circumference, and the protruding hole 42 is a missing portion of the edge protrusion 51. On the inner surface of the lower plate 5,
A circular battery hole 52 is provided at the center, a light emitting diode mounting recess 53 is formed facing the tip 21 of the discharge handle 2, and the battery hole 52 and the recess 53 are connected by a lead groove 54. . A neon lamp chamber 56 having a window 55 opened on the lower surface is formed on the side of the battery hole 52,
An outer lead groove 57 and an inner lead groove 58 extend from the neon lamp chamber 56 to the tip side. The tip of the inner lead groove 58 faces the hole 31 of the lower surface side insulating sheet 3.

The battery 6 is accommodated in the battery hole 52, and the light emitting diode 7 is fitted in the light emitting diode mounting recess 53. One lead pin 71 of the diode 7 is inserted through the bottom of the lead groove 54 and is connected to the plus electrode 61 which is the bottom surface of the battery 6. The other lead pin 72 of the light emitting diode 7 has elasticity, is loosely fitted in the upper portion of the lead groove 54 and extends to the upper surface of the battery 6, and is parallel to the negative electrode 62 which is the upper surface of the battery 6 with a gap 60 therebetween. And the switch S is configured.

The neon lamp 8 is fitted in the neon lamp chamber 56 so that the light emitting portion faces the window 55. From the neon lamp 8, a bare lead wire 81 is formed on the outer lead groove 5.
7 and the coated lead wire 82 is extended to the inside lead groove 58.
Has been extended within. The bare lead wire 81 is the outer lead groove 5
7 is electrically connected to the wall surface of the inner lead groove 58, and the coated lead wire 82 is insulated from the wall surface of the inner lead groove 58, and the core wire exposed portion 83 is provided at the end thereof, and the core wire exposed portion 83 is provided in the recess 41 of the upper plate 4. It is arranged so as to come into contact with the surface of the knob portion 11 of the fitted key 1. The exposed core wire portion 83 is in contact with the surface of the knob portion 11 of the key 1 through the hole 31 of the lower surface side insulating sheet 3, and the electric circuit shown in FIG. 4 is formed.

The key with discharge handle 100 operates as follows. When the user charged on the human body performs an operation, such as inserting the key 1 into a key switch while sandwiching the discharge handle 2 with fingers, the electric circuit shown in FIG. 4 is formed, and the discharge handle 2 and the metal key from the human body are formed. A discharge is made to the vehicle body which is the ground through 1. Since this discharge is appropriately set to have a resistance value between the outer surface of the discharge handle 2 and the metal key 1 of 0.1 to 100 megohm at an applied voltage of 1000 V, it takes about 1 second. It is done gently. As a result, it is possible to prevent a shock from being generated due to the discharge and to delay the discharge time to such an extent that it is practically inconvenient.

Table 1 shows the resistance value in the thickness direction of the discharge handle 2 and the result of the impact test during discharge. It can be seen from Table 1 that when the resistance value is 0.1 to 100 megohm at the applied voltage of 1000 V, the discharge is performed quickly and surely, at the same time, the shock is not felt during the discharge, and the neon lamp 8 is turned on. It is proved that the discharge can be confirmed.

[0013]

[Table 1]

At the time of this discharge, a current flows through the neon lamp 8 to light it, and the discharge state is displayed. This allows the user to recognize the completion of discharge. Further, when the discharge handle 2 is pressed with a finger when the key 1 is inserted into the key hole, the other lead pin 72 of the light emitting diode 7 comes into contact with the minus electrode 62 which is the upper surface of the battery 6 and closes the switch S. Electricity flows into the light emitting diode 7 to emit light.
As a result, usability can be improved such that the key 1 can be easily inserted in a dark place such as at night.

[Brief description of drawings]

FIG. 1 is a perspective view of a key with a discharge handle.

FIG. 2 is an assembly view of a key with a discharge handle.

FIG. 3 is a sectional view of a key with a discharge handle.

FIG. 4 is an electric circuit diagram of a neon lamp.

[Explanation of symbols]

 100 Key with Discharge Handle 1 Metal Key 2 Discharge Handle 3 Insulation Sheet 4 Resin Upper Plate 5 Resin Lower Plate 6 Battery 7 Light Emitting Diode (Light Emitting Element) 8 Neon Lamp 11 Grip S Switch

Claims (3)

[Claims] 1. A key with a discharge handle attached so as to enclose a knob of a metal key, wherein the discharge handle is formed by dispersing a conductive substance in resin or rubber, and the metal key is attached. The resistance value between the outer surface and the metal key in the closed state is 0.1 at an applied voltage of 1000 V.
A key with a discharge handle, which is 100 megohms. 2. The discharge handle and the metal key are connected via a neon lamp attached to the discharge handle according to claim 1, and static electricity charged to a human body is discharged to the ground through the neon lamp. A key with a discharge handle that is characterized by being. 3. The method according to claim 1, wherein
A key with a discharge handle, characterized in that a battery and a switch that is closed by compressing the discharge handle are incorporated inside the discharge handle, and a light emitting element exposed on the surface is attached and connected to the battery and the switch.