KR100262073B1 - Tear gas injector for commercial vehicles - Google Patents

Abstract

PURPOSE: A teargas injector of a cab is provided to help a driver escape from danger by discharging tear gas to rear seats of a cab when passengers threatens the driver. CONSTITUTION: A teargas injection system of a cab is comprised of: a head rest(4) having several injection holes(1,3) on the upper, rear and both sides except the front side, assembled to driver's seat of a cab; and a teargas injection unit mounted in the head rest to inject tear gas to the rear and both sides by an operating switch in emergency. A driver pushes the operating button on a steering wheel or driver's seat when a passenger threatens the driver with a weapon. Thereby, battery power is fed to an electromagnet and a pressure plate is moved toward the electromagnet out of an operating cylinder(13). A vacuum tank(15) generates high pressure therein, and the pressure is delivered to a teargas housing(20). A piston is pushed to compress tear gas filling the teargas housing. The tear gas is injected through a check valve when the pressure reaches a specific reference value. Therefore, the tear gas flows through a guide(21) to be injected into each injection hole of the head rest.

Description

Tear gas injector for commercial vehicles

The present invention relates to a tear gas injector for a commercial passenger vehicle, and more particularly, to a tear gas injector for a commercial passenger vehicle that discharges tear gas into a rear seat to escape from danger when a passenger turns to strength and threatens a driver. will be.

In general, a commercial vehicle has little countermeasures for a passenger turning into a robbery, and many drivers are not only injured, but are also urgently required to take countermeasures such as stolen goods and vehicles.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tear gas injector for a commercial passenger vehicle to escape from danger by discharging tear gas into the rear seat when the passenger turns to strength and threatens the driver.

In order to achieve the above object of the present invention, a head rest coupled to the driver's seat of the vehicle and a plurality of injection holes are formed on the top, back and both sides except the front, and is installed in the head rest in the emergency operation switch There is provided a tear gas injector for a commercial passenger vehicle, characterized in that it comprises a tear gas injection means for injecting the tear gas to the rear and both sides.

The tear gas injection means includes a working cylinder having an electromagnet, a return spring and a pressure plate installed therein, a vacuum tank connected to communicate with the working cylinder, and connected to communicate with the vacuum tank and having a piston, a tear gas and A tear gas housing having a check valve and a guide connected to the tear gas housing to guide the tear gas to the injection hole of the head rest.

1 is a perspective view showing a head rest for a passenger vehicle driver seat equipped with a tear gas injector of the present invention.

2 and 3 is a cross-sectional view showing a headrest for a passenger vehicle driver's seat according to the present invention.

Figure 4 is a block diagram showing a tear gas injection device for a commercial vehicle according to the present invention.

5 is a schematic circuit diagram of a tear gas injector according to the present invention;

Explanation of symbols on the main parts of the drawings

1,2,3; Injection hole 4; Head rest

10; Electromagnet 11; Return spring

12; Pressure plate 13; Working cylinder

14,16; Hose 15; Vacuum tank

17; Piston 18; Tear gas

19; Check valve 20; Tear gas housing

21; guide

Hereinafter, the tear gas injector for a commercial vehicle according to the present invention will be described according to the embodiment shown in the accompanying drawings.

1 is a perspective view showing a headrest for a commercial passenger vehicle driver seat equipped with a tear gas injection device of the present invention, Figures 2 and 3 is a cross-sectional view showing a headrest for a passenger vehicle driver's seat according to the present invention, Figure 4 is a present invention 5 is a schematic circuit diagram of a tear gas injector according to the present invention.

As shown in the drawing, in the tear gas injector of a commercial vehicle according to the present invention, several injection holes (1) (2) (3) are formed on the upper surface, the rear surface, and both side surfaces of the vehicle except for the front surface, and the driver's seat of the vehicle. It is composed of a head rest 4 coupled to (S), and the tear gas injection means installed in the head rest 4 to inject the tear gas to the rear and both sides by an emergency operation switch (W). .

The tear gas injection means is connected to the operating cylinder 13 and the operating cylinder 13 and the hose 14, the electromagnet 10, the return spring 11 and the pressure plate 12 is installed therein Is connected to the vacuum tank 15, the vacuum tank 15 and the hose 16, the tear gas housing 20 is provided with a piston 17, a tear gas 18 and a check valve 19 therein. ) And a guide 21 connected to the tear gas housing 20 to guide the tear gas to the injection holes 1, 2, 3 of the head rest 4.

The operation switch (W) is preferably installed on the handle or driver seat (S) or the like so as not to notice the threat of holding the weapon in the rear or passenger seat.

In the drawings, reference numeral 22 is a fixing member, 23, 24 is a coupling member, 25 is a seal member.

Referring to the effect of the tear gas injection device according to the present invention configured as described above are as follows.

If the driver's strength of impersonation threatens the weapon from the rear or passenger seat during driving of a commercial vehicle, the power of the battery is supplied to the electromagnet 10 when the driver presses the operation switch (W) installed on the steering wheel or the driver's seat. At the same time, the pressure plate 12 is moved in the direction of the electromagnet 10 by overcoming the elasticity of the return spring 11 inside the working cylinder 13 by the magnetic force.

By moving the pressure plate 12 generates a strong pressure inside the vacuum tank 15, the pressure generated in the vacuum tank 15 is transmitted to the tear gas housing 20 to transfer the piston 17 Push to compress the tear gas 18 filled in the interior of the tear gas housing 20.

At this time, when the pressure of the tear gas 18 exceeds a predetermined reference value, it is discharged through the check valve 19, and the tear gas 18 is moved along the guide 21 so that the angle of the head rest 4 is reduced. Strongly injected into the injection holes (1) (2) (3).

Therefore, the robber who threatened the driver could not be alerted momentarily by the tear gas 18, and the driver could open the door and jump out to ask pedestrians or the like to escape from danger.

As described above, the tear gas injector for a commercial passenger vehicle according to the present invention includes a head rest coupled to a driver's seat of a vehicle, in which a plurality of injection holes are respectively formed on the upper surface, the rear surface, and both side surfaces of the vehicle except for the front surface; Installed in the rest of the rest by an emergency operation switch configured by the tear gas injection means for injecting the tear gas to the rear and both sides, there is an effect that can be safely escaped from the threat of strength suddenly turned into a strength in the passenger.

Claims (2)

Several injection holes are formed on the upper, rear and both sides except the front, respectively, and a head rest coupled to the driver's seat of the vehicle, and installed inside the head rest to spray tear gas to the rear and both sides by an emergency operation switch. Tear gas injection device for a commercial vehicle, characterized in that consisting of tear gas injection means. According to claim 1, wherein the tear gas injection means is a working cylinder having an electromagnet, a return spring and a pressure plate therein, a vacuum tank connected to communicate with the working cylinder, and connected to communicate with the vacuum tank therein A tear gas injector for a commercial vehicle, comprising: a tear gas housing having a piston, a tear gas, and a check valve, and a guide connected to the tear gas housing to guide the tear gas to the injection hole of the headrest.