JP4728983B2 - Gun firing limiter - Google Patents

Description

  The present invention relates to a gun firing restriction device that can easily realize a safe gun that can be used only by a specific user.

  As a general rule, guns (including all guns such as pistols, rifles, and hunting guns, and so on) should be used safely only by specific users authorized to use them. However, conventional guns can be freely fired regardless of who they are.

  When using such a conventional technology, the gun can be used freely by the person who obtains it, and as a result of unexpected killing cases and frequent fire accidents by infants and boys, it is a kind of social problem. It is as is widely known.

  Therefore, in view of the problems of the prior art, the object of the present invention is to easily realize a safe gun that can be fired only by a specific user by combining a portable transmitter unit and a receiver unit incorporated in the gun. An object of the present invention is to provide a gun firing restriction device that can be used.

  In order to achieve this object, the configuration of the present invention includes a transmission unit that a user wears on the body by a waist belt and carries the identification code of the user at all times, and an identification code that is incorporated in a gun and is transmitted from the transmission unit. And a receiving unit that sets the gun to be able to fire, and the transmitting unit has a separate output probe that is in close contact with a part of the user's body, and only through the user's body The gist of the invention is to make the identification code reach the receiving probe of the receiving unit exposed on the surface of the gun grip by the electric signal from the transmitting output probe. The receiving unit may have an area identification circuit that recognizes an area code from an external transmitter and sets the gun to be unfireable.

  According to the configuration of this invention, the receiving unit incorporated in the gun recognizes the identification code from the transmitting unit carried by the user and sets the gun so that it can fire. In other words, the gun cannot be fired unless the correct identification code from the transmission unit is recognized by the reception unit, and the user can be strictly limited. Note that the user identification code transmitted from the transmission unit and recognized by the reception unit is correctly set and stored in both the transmission unit and the reception unit, for example, at the time of gun registration. Therefore, according to the present invention, by combining the transmission unit carried by the user with the reception unit incorporated in the gun, the reception unit recognizes the identification code from the transmission unit and sets the gun to be able to fire. Only a specific user can use the gun, and a safe gun can be easily realized.

  Since the transmitter unit is carried by the gun user, the means for transmitting the identification code for the receiver unit is transmitted through the user's body in addition to weak radio signals such as radio waves and magnetic fields, and wired signals using cables. It may be an electrical signal. When transmitting an electric signal through the user's body, the user carries the transmitter unit with the output probe in close contact with a part of the body, for example, the receiver probe of the receiver unit on the surface of the gun grip. By exposing, the transmitting unit can reliably reach the identification code to the receiving unit in the gun that holds the grip with bare hands.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The gun firing restriction device includes a transmission unit 10 carried by a user M and a reception unit 20 incorporated in the gun G (FIGS. 1 and 2).

  The transmission unit 10 is configured by connecting an identification code generation circuit 12 to a transmission circuit 11 having a crystal oscillator X (FIG. 1A). The output of the transmission circuit 11 is connected to an external output probe PB1. The transmission unit 10 can be carried by the user M so that the output probe PB1 is in close contact with a part of the body (FIG. 2).

  The reception unit 20 cascades an external reception probe PB2, a filter 21, and a user identification circuit 22 (FIG. 1B), while an external antenna A, a filter 23, and an area identification circuit 24. The outputs of the user identification circuit 22 and the area identification circuit 24 are connected to a common logic circuit 25 in cascade. The output of the logic circuit 25 is connected to an external solenoid SL.

  The receiving unit 20 is incorporated in the gun G together with the battery BT for power supply, the antenna A, the receiving probe PB2, and the solenoid SL (FIG. 3). However, the receiving probe PB2 is mounted so as to be exposed on the surface of the grip G1 of the gun G.

  The gun G has a series of firing mechanisms including a trigger Ga, a trigger bar Gb, a shear Gc, a hammer Gd, and a firing pin Ge. The rear portion of the trigger bar Gb is driven upward via a leaf spring Gf1, pressing the upward protruding piece Gb2 against the arcuate guide Gf2, and engaging the lateral hook Gb1 with the hammer Gd. Further, a hook-like plunger of the solenoid SL is engaged from below with the extension Gb3 at the rear end of the trigger bar Gb.

  When the solenoid SL is not energized, if the trigger Ga is pulled backward (in the direction of arrow Ka in FIG. 3), the trigger bar Gb moves forward (in the direction of arrow Kb in FIG. 3), and the hammer Gd rotates downward against the hammer spring Gd1. (In the direction of arrow Kd in FIG. 4A). At this time, the shear Gc engages with the claw of the hammer Gd to prevent the hammer Gd from returning. When the trigger Ga is sufficiently pulled ((B) in the same figure), the rear part of the trigger bar Gb is pushed downward through the guide Gf2, the engagement between the hook Gb1 and the hammer Gd is released, and the hook Gb1 Corresponds to the protrusion.

  Therefore, when the trigger Ga is further pulled, the shear Gc rotates forward via the hook Gb1 (in the direction of the arrow Kc in FIG. 5B), the hammer Gd becomes free, and suddenly rises upward via the hammer spring Gd1. Rotate ((C) in the figure). Therefore, the hammer Gd strikes the rear end of the firing pin Ge, ignites the gunpowder in the cartridge case G2, and the bullet G3 is fired (FIG. 3).

  On the other hand, when the solenoid SL is energized, the rear portion of the trigger bar Gb is pulled downward via the solenoid SL (the chain line in FIG. 5), and the hook Gb1 of the trigger bar Gb and the hammer Gd are disengaged. Therefore, at this time, even if the trigger Ga is pulled and the trigger bar Gb is moved forward, the hook Gb1 does not rotate the hammer Gd (two-dot chain line in the figure), and therefore the solenoid SL does not fire the gun G. Can be set. At this time, even if the hammer Gd is manually rotated downward, the hammer Gd is locked by the shear Gc and does not rotate upward, so that the gun G is kept unfired.

  The identification code generation circuit 12 of the transmission unit 10 always generates an identification code Cm for identifying the user M. Therefore, the transmission circuit 11 can FM-modulate the carrier wave with the identification code Cm, for example, and send it out as an electrical signal via the output probe PB1.

  When the user M holds the grip G1 of the gun G, the electrical signal from the transmission unit 10 is transmitted through the body of the user M, that is, the reception probe PB2 of the reception unit 20 using the body of the user M as a transmission medium. And reaches the user identification circuit 22 via the filter 21. Therefore, the user identification circuit 22 can compare the identification code Cm received from the outside with the identification code Cmo set and stored in advance, and detect Cm = Cmo to generate the output signal S1. . Further, the user identification circuit 22 does not generate the output signal S1 when Cm ≠ Cmo or when there is no electric signal from the transmission unit 10.

  On the other hand, the logic circuit 25 does not energize the solenoid SL when there is an output signal S1, and energizes the solenoid SL when there is no output signal S1. In other words, the receiving unit 20 recognizes the identification code Cm = Cmo from the transmitting unit 10 and sets the gun G to be able to fire through the solenoid SL, so that the specific user M carrying the transmitting unit 10 can receive it. Only the gun G can be used.

  When receiving a radio wave from an external transmitter (not shown) via the antenna A, the receiving unit 20 determines an area code by the area identifying circuit 24 via the filter 23. That is, when the area identification circuit 24 detects the area code from the external transmitter, it outputs an output signal S2, and the logic circuit 25 at this time outputs the output signal S1 from the user identification circuit 22 and the area identification circuit 24. Depending on the presence or absence of S2, whether or not the solenoid SL needs to be energized is determined according to the logic table of FIG. 6, and the gun G can be set to be fireable or unfireable.

  However, in FIG. 6, output signals S1 = 0 and 1 indicate the recognition results of the identification codes Cm.noteq.Cmo and Cm = Cmo by the user identification circuit 22, respectively, and the output signals S2 = 0 and 1 respectively represent the area identification circuit. 24 shows the recognition result with no area code and with area code. That is, when the area identification circuit 24 detects an area code from an external transmitter, the area identification circuit 24 recognizes that the area is a firing prohibited area and cannot fire the gun G regardless of the presence or absence of the output signal S1 from the user identification circuit 22. Can be set.

  In the above description, the solenoid SL may be engaged with the recess Ge1 of the firing pin Ge instead of being engaged with the trigger bar Gb (FIG. 7). That is, when the solenoid SL is energized, the plunger of the solenoid SL is engaged with the recess Ge1, and the firing pin Ge is locked so as not to move back and forth, so that the gun G can be set to be unfireable.

  Instead of setting the gun G to be unfireable by energization, the solenoid SL may be set to be unfireable by non-energization and set to be fireable by energization. Further, the solenoid SL may be replaced with an arbitrary actuator including a motor, and the gun G may be switched to be unfireable or fireable via a switching mechanism optimum for the firing mechanism depending on the type of the gun G. In other words, the present invention can be suitably applied to all types of guns. In the present invention, each component of the transmission unit 10 and the reception unit 20 can be partially or entirely configured by a microcomputer.

Overall block diagram Usage state explanatory diagram (1) Usage state diagram (2) Operation explanatory diagram (1) Operation explanatory diagram (2) Operation explanatory diagram (3) Main part block diagram which shows other embodiment

Explanation of symbols

M ... User G ... Gun Cm ... Identification code PB1 ... Output probe PB2 ... Reception probe 10 ... Transmission unit 20 ... Reception unit

Patent Applicant Linear Circuit Co., Ltd.
Attorney Tadaaki Matsuda, Attorney

Claims (2)

A transmission unit that the user wears on his / her body by a waist belt and carries the identification code of the user at all times, and a reception unit which is incorporated in the gun and recognizes the identification code from the transmission unit so that the gun can be fired. The transmission unit has a separate output probe that is in close contact with a part of the user's body, and an electrical signal from the output probe that is transmitted only through the user's body, A gun firing restriction device, wherein an identification code is made to reach a receiving probe of the receiving unit exposed on a surface of a gun grip.   2. The gun firing restriction device according to claim 1, wherein the receiving unit has an area identification circuit that recognizes an area code from an external transmitter and sets the gun to be unfireable.

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