JPH1111241A - Simple window glass breaking tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a tool light in weight and easy to be operated, impart strong surface pressure to window glass and break window glass by providing a cemented carbide tapered part of a specified tip angle at the sharpened tip of a tapered part extending to one side of a stainless grip part. SOLUTION: A tapered part 12 which becomes thinner at the tip is connected with one side of a bar-shaped grip part 11 which is made of a stainless material and is gripped by the palm of the hand. A tapered part 13 which is sharpened at the tip is formed at the tip part of the tapered part 12. The tapered part 13 is made of cemented carbide and the tip angle α is sharpened from 65 deg. to 85 deg. and is preferably sharpened at 75 deg.. The tapered part 13 is capable of damaging window glass by a slight attack because the part 13 is harder than hardness of window glass and the tip part comes into contact with window glass and damages window glass not only when the tip angle α is an acute angle and the tip part acts on window glass at a right angle but also when the tip part is inclined at 45 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window glazing device used to break a window glass for escape when an occupant is trapped in a vehicle due to an accident or breakdown of a vehicle.

[0002]

2. Description of the Related Art When a car is submerged in an accident or the door cannot be opened in an accident, a hammer-shaped tool must be installed in the vehicle compartment to break the window glass and escape in an emergency. It was proposed to use this to break a window glass (Japanese Patent Laid-Open No. 7-9363). In addition, after that, as shown in FIG. 6, the weight is further reduced so as to facilitate the handling of the window glass splitter, and the weight is reduced so that the function of breaking the window glass is not impaired. (Japanese Patent Application No. 9-140864) has proposed a window glass splitter A whose tip is covered with a protective cover a made of a synthetic resin having a spherical shape to increase safety. And it was made of stainless steel with good anti-corrosion performance for the whole window glass splitter for long-term use.

[0003]

However, since the hardness of the stainless steel material is slightly lower than that of the window glass for automobiles, it can be broken without any trouble if it can be hit at right angles to the window glass. However, it is not always possible to take a good striking posture because the vehicle is tilted or deformed due to an accident. Therefore, if the posture at the time of breaking the window glass is not appropriate, the hitting angle of the glass splitting tool with respect to the window glass is incorrect, and the window glass is hit several times until the window glass is broken. That is, there were cases where prompt responses to accidents were not possible. In such an accident, the metal fittings of the seat belt may be deformed or the belt may be pressed down, and the seat belt may not come off. In this case, there is no other way than to escape by cutting the seat belt, but it is not always the case that the knife is easily provided in the vehicle, and there are cases where the escape cannot be achieved until rescue is received.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a first tapered portion which is made of stainless steel and has a grip portion which can be gripped by a palm, and which extends to one side of the grip portion and has a narrow tip. The second having a pointed tip at the tip of one tapered portion
The problem can be solved by providing a tapered portion and forming the second tapered portion with a cemented carbide. Further, it is preferable that a tip angle of the second tapered portion is set in a range from 65 ° to 85 °. Further, a cutter blade is provided on the other side of the grip portion, and the cutter blade is detachably covered with a hard cover.

[0005]

[Function] The simple window glass splitting tool is made thickest at the part to be gripped by the palm, and the center of gravity of the grip part has a center of gravity. The portion protruding from the grip is tapered to reduce the weight ratio of the remaining portion to the grip. The second tapered portion is a portion that applies a blow to the window glass, and is harder than the hardness of the window glass, so that the window glass is damaged by a slight blow. In addition, the angle of the tip angle of the second taper portion is an acute angle.
Even if it is tilted about ゜, the tip touches the window glass and damages it. Furthermore, the simple window glass splitter includes a cutter provided on the other side of the second tapered portion, and can use this to cut the seat belt.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, 1
Numeral 0 is a simple window glass splitter utilizing the invention of the present application.
The simple window glass splitter 10 is made of stainless steel and has a rod-shaped grip portion 11 that can be gripped by the palm. Grip part 1
A first taper portion 12 having a thinner tip is connected to one side of the first taper portion 1, and a second taper portion 13 having a sharp tip is formed at the tip of the first taper portion 12. The total length of the simple window glass splitting tool 10 is about 15 cm, and the first tapered portion 12 is cut with a 20 ° taper from the grip portion 11 toward the end. Thus, the center of gravity of the simple window glass splitting tool 10 is located in the grip portion 11 and there are some individual differences. Is set to

The second taper portion 13 is made of a cemented carbide, and has a tip angle α at one end of 65 ° to 85 °, preferably 7 °.
5 ° and the other end is the first tapered portion 12.
Brazing is inserted into the receiving hole 12a formed at the small diameter end of
Alternatively, they are inseparably joined by processing such as caulking. The cemented carbide generally contains silicon carbide and tungsten as main components and has an extremely high hardness comparable to that of diamond. Thus, even when the simple window glass splitting tool 10 collides at an angle inclined to about 45 °, the hard front end portion 14 of the second tapered portion 13 is eaten by the window glass (not shown). Can be embedded.

FIG. 2 shows a modification of the simplified window glass splitter 10. In this case, a cutter blade 20 used for cutting a seat belt (not shown) is provided at an end of the grip portion 11 opposite to the first tapered portion 12. The cutter blade 20 is inserted into a hole formed inward from the end of the grip portion 11 and is adhered and fixed with an adhesive. The cutter blade 20 is covered by a cap 16 having a hemispherical head for the safety of the user. Cap 1
Numeral 6 is loosely screwed to an external thread formed on the outer periphery of the end of the grip 11, so that the label 17 is adhered to the outer surface so that it cannot be loosened unless the label 17 is peeled off.

FIG. 3 shows another modification of the simplified window glass splitter 10. In this case, a spherical protective cover 15 is provided to protect the hard tip portion 14 of the second tapered portion 13. The protective cover 15 is made of artificial pearl made of glass. That is, a hole 15a is made in one side of the spherical artificial pearl from one side, and the tip portion 14 of the second taper portion 13 is housed therein and adhered. The tip of the first tapered portion 12 enters the opening of the hole 15a.
When the 2 is pushed into the hole 15a, it is easily broken by a wedge action. The tip 14
The means for protecting is not limited to this, and a removable cap 16 similar to the cutter blade 20 may be provided as shown in FIG. Further, the first tapered portion 12
It is not essential that the first taper portion 12 be formed with two or more tapered portions as shown in FIG. Can be.

According to the above embodiment, when the vehicle collides or is submerged and the driver is left behind in the vehicle, the simple window glass splitting device 10 is gripped as shown in FIG. The part 12 protrudes toward the little finger, the other end of the grip part 11 is held down with the thumb, and the arm is swung in the direction of the arrow in the figure and the protective cover 15 hits the front glass 21 of the driver's seat, as shown in FIG. First, the protective cover 15 is cracked, and then the tip portion 14 of the second tapered portion 13 collides violently with the front glass 21. The tip of the second taper portion 13 is sharp, and pierces the front glass 21 at a point to exert a huge surface pressure. Therefore, the window glass made of tempered glass is instantaneously broken into fine dust.

When the seat belt cannot be removed from the body due to the deformation of the vehicle body or the deformation of the belt buckle due to the accident, the label 17 on the outer surface is peeled off and the cap 16 is removed.
To expose the cutter blade 20 and cut the seat belt.

[0012]

According to the first aspect of the present invention, the simple windowpane breaker is lightweight and easy to operate, and gives a strong surface pressure to the windowpane to break it. According to the second aspect, the sharp tip of the second tapered portion can break the sharp tip into the glass even if the axis of the simple window glass splitting tool is not orthogonal to the window glass. it can. According to claim 3,
When the seat belt cannot be disengaged due to the deformation of the vehicle body due to the accident, the seat belt can be cut off and escaped. And so on.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the invention according to this application,
It is a side view with a partial fracture.

FIG. 2 is a side view corresponding to FIG. 1 showing a modified example thereof.

FIG. 3 is a side view corresponding to FIG. 1 and further illustrating a state in which a safety cap is put on a distal end portion thereof.

FIG. 4 is a side view corresponding to FIG. 3 in which an aspect of the safety cap is modified.

FIG. 5 is a sectional view of a glass surface showing a moment when a window glass is broken.

FIG. 6 is an external view showing a use state of a conventional window glass splitter.

[Explanation of symbols]

10 ··· Simple window glass splitting tool 11 ···
Grip part 12 First taper part 12a
Receiving hole 13 ··· Second taper portion 14 ···
Tip 15 Protective cover 15a
Hole 16 ··· Cap 17 ···
Label 20 ... Cutter blade 21 ...
Front glass

Claims (3)

[Claims] 1. A first tapered portion which is made of stainless steel and has a grip portion to be gripped by a palm, and extends to one side of the grip portion and has a narrowed tip, and a sharp tip at the tip of the first tapered portion. And a second tapered portion provided with: a simple windowpane splitter formed by forming the second tapered portion from a cemented carbide. 2. A simple window glass splitter according to claim 1, wherein a tip angle of said second tapered portion is set at 65 ° to 85 °. 3. A simple windowpane splitter according to claim 1, wherein a cutter blade is provided on the other side of said grip portion, and said cutter blade is detachably covered by a hard cover.