JP2012091267A - Hole cutting tool for window glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole cutting tool for window glass capable of momentarily cutting a hole in the window glass.SOLUTION: The hole cutting tool for the window glass includes a rod-like handle bar 2, a cylinder 3 provided at the front end of the handle bar 2, and a projection 4 projected from one end 3a in the longitudinal direction of the cylinder 3. One end 3a of the cylinder 3 constitutes a blade which is gradually thinner toward the front end. One end 3a is formed sloping to be located gradually closer to the side of the other end 3c of the cylinder 3 as separating from the projection 4. The projection 4 is formed so that its tip is sharpened.

Description

  The present invention relates to a window glass punch used to make a hole in a window glass.

  Conventionally, for example, in order to insert a teardrop from the outside into a room, a window glass is broken to make a hole, and the hole is thrown into the room through the hole. In order to make a hole in the window glass, it is necessary to smash the window glass with a hammer or the like and remove the glass piece so that a hole having a required width is formed.

  As a tool for breaking a window glass, for example, there is one described in Patent Document 1. The glass splitting tool shown in Patent Document 1 is for splitting a window glass of a vehicle from the interior of the vehicle, and includes a handle gripped by an occupant, a hammer provided at the tip of the handle, and a protective member that covers the handle And. The handle has a size that can be gripped by an occupant and has a length that can be easily handled in the vehicle.

JP 2010-36267 A

  However, when the window glass is struck and broken with a hammer as described above, a hole having a desired size cannot be formed at a time. In such a case, the time required for drilling becomes long. Such a malfunction also occurs in the glass splitting tool shown in Patent Document 1.

  Many windows in recent years are formed by combining reinforced film, polycarbonate, acrylic, etc., and even if cracks occur when struck with a hammer or the above-mentioned glass splitting tool, it takes more time to make a hole. Is. For this reason, there is a demand for a drilling tool that can make a hole in a window glass with a single blow when an emergency is required.

  The present invention has been made to meet such a demand, and an object of the present invention is to provide a window glass punch that can instantaneously and reliably open a hole in a window glass.

  In order to achieve this object, a window glass punch according to the present invention is provided with a rod-shaped handlebar and a center line at the tip of the handlebar so as to intersect the longitudinal direction of the handlebar. A cylindrical body and a protrusion projecting from the longitudinal end of the cylindrical body so as to be oriented in the longitudinal direction, and the one end of the cylindrical body gradually increases in thickness toward the tip. The blade is formed to be thin, and is gradually inclined to be positioned on the other end side of the cylinder as it is separated from the protrusion, and the protrusion is formed to have a sharp tip. It is what.

According to the present invention, in the above invention, the cylindrical body is attached to the handle bar so that the protrusion is disposed at a position farthest from the base end portion of the handle bar.
The present invention is the above invention, wherein the cylindrical body is detachably attached to the handle bar.

The present invention is the above invention, wherein the coupling portion between the cylindrical body and the protrusion has a coupling structure in which a base portion of the protruding body is overlapped on a wall surface extending in a longitudinal direction of the cylindrical body, and both of them are fixed, The protrusion is formed with a contact surface facing the tip surface of the cylindrical body.
In the present invention according to the present invention, the cylindrical body is formed of a cylinder.

  The piercing tool for window glass according to the present invention is used in a state where the user grips the proximal end portion of the handlebar with one hand and the middle portion of the handlebar with the other hand. In order to make a hole in a window glass using this window glass punch, the handle bar is moved so that the cylinder advances toward the window glass while the user holds the handle bar as described above. This is done by striking the protrusion strongly against the window glass.

  The protrusion penetrates the window glass when hit against the window glass. At this time, a through hole (not shown) is formed in the window glass. Then, immediately after the protrusion penetrates the window glass in this way, the tip portion of the cylinder is driven into the through hole, and the window glass breaks so as to tear along the cylinder starting from the through hole. . Since the said one end part of a cylinder is formed so that it may incline and extend from a protrusion, when the cylinder progresses, the crack of a window glass extends along a cylinder. For this reason, the window glass is cut out in substantially the same shape as the cylinder when the cylinder is pushed. After that, when the cylindrical body is pulled out from the window glass, a hole is made in the window glass.

  For this reason, it is possible to make a hole in the window glass by shaking the handle bar and driving the protrusion and the cylinder into the window glass. Therefore, according to the present invention, it is possible to provide a window glass punch that can instantaneously open a hole with a simple operation.

It is a front view of the hole punch for windowpanes concerning the present invention. It is a side view of the hole making tool for windowpanes concerning the present invention. It is sectional drawing which expands and shows the coupling | bond part of a handle bar and a cylinder. It is a top view which expands and shows a protrusion. It is the VV sectional view taken on the line in FIG. It is a front view which shows the other example of a protrusion. It is the VII-VII sectional view taken on the line in FIG.

(First embodiment)
Hereinafter, an embodiment of a window glass punch according to the present invention will be described in detail with reference to FIGS.
1 and 2 includes a rod-shaped handle bar 2, a cylindrical body 3 provided at a distal end portion 2a of the handle bar 2, and one longitudinal end portion of the cylindrical body 3. And a protrusion 4 provided on the surface.
The “window glass” that is made by the window glass punch 1 is a float glass, a laminated glass, a tempered glass, a product in which a tempered film is attached to these glasses, or a polycarbonate, an acrylic, or the like. Organic glass and composites of these.

The handle bar 2 is formed of a metal pipe. The distal end portion 2a and the proximal end portion 2b (lower end portion in FIGS. 1 and 2) of the handle bar 2 according to this embodiment are formed in a circular cross section, and the distal end portion 2a and the proximal end portion 2b The intermediate part 2c is formed in an elliptical cross section. The intermediate part 2c may have an oval cross-sectional shape.
The distal end portion 2 a of the handle bar 2 is inserted into a cylindrical handle holder 5 (see FIG. 3) of the cylindrical body 3 described later, and is fixed by a fixing thumbscrew 6.

The base end 2b of the handle bar 2 is provided with a grip 7 for a user (not shown) to grip.
A plurality of types of handlebars 2 are prepared with different lengths, and one of the plurality of handlebars 2 is selected and used.

  The cylinder 3 is formed by processing a cylinder made of a metal material into a predetermined shape. More specifically, one end 3a (the left end in FIG. 2) in the longitudinal direction of the cylinder 3 is inclined at a predetermined angle with respect to the center line C1 of the cylinder 3 as shown in FIG. It is formed as follows. Although the details of the protrusion 4 will be described later, the protrusion 4 is attached to a tip portion 3b that protrudes most in the longitudinal direction of the cylindrical body 3. That is, the one end portion 3 a of the cylindrical body 3 is formed so as to be gradually inclined toward the other end portion 3 c side of the cylindrical body 3 as the distance from the protrusion 4 increases.

The cylindrical body 3 is attached to the handle bar 2 so that the distal end portion 3b is farthest from the base end portion 2b of the handle bar 2.
As shown in FIG. 5, the thickness of the one end 3a of the cylindrical body 3 is formed so as to gradually become thinner toward the tip of the one end 3a. That is, the one end 3 a of the cylindrical body 3 constitutes the blade 11. The blade 11 is formed so as to continuously extend over the entire circumferential direction of the cylindrical body 3.

The handle holder 5 that couples the cylindrical body 3 and the handle bar 2 is formed by a pipe made of a metal material. The inner diameter of the handle holder 5 is formed to be slightly larger than the outer diameter of the distal end portion 2 a of the handle bar 2.
As shown in FIG. 3, the handle holder 5 is welded to the intermediate portion 3 d in the longitudinal direction of the cylindrical body 3 so as to penetrate therethrough. The attachment position of the handle holder 5 is set so that the center line C1 of the cylinder 3 and the center line C2 of the handle holder 5 are orthogonal to each other.

A thumbscrew 6 for fixing the handlebar 2 to the handle holder 5 is disposed on the other end 3 c side of the cylindrical body 3 in the handle holder 5. For this reason, the user can operate the thumbscrew 6 so as to insert a hand into the opening of the other end 3 c of the cylindrical body 3.
The protrusion 4 is formed in a rod shape from a metal material, and is fixed by a fixing screw 12 in a state of being superimposed on the tip portion 3b of the cylindrical body 3 as shown in FIGS.

The protrusion 4 according to this embodiment is formed by processing a columnar body having a circular cross section into a predetermined shape. An inclined surface 13 is formed at the tip of the protrusion 4 so that the tip 4a is pointed.
A notch 14 is formed in a shape such that a part of the protrusion 4 in the radial direction is removed from the base 4b on the opposite side of the tip 4 from the tip. As shown in FIG. 5, the notch 14 includes an attachment surface 14 a extending in the longitudinal direction of the protrusion 4, and one end of the attachment surface 14 a (one end located on the distal end side of the protrusion 4). The contact surface 14b extends in a direction orthogonal to the direction. The notch 14 according to this embodiment is positioned so as to be located on the opposite side to the inclined surface 13 of the protrusion 4. That is, the tip 4 a of the protrusion 4 and the notch 14 are positioned so as to overlap when viewed from the longitudinal direction of the protrusion 4.

The protrusion 4 overlaps the mounting surface 14a of the notch 14 on the outer wall surface (wall surface extending in the longitudinal direction of the cylindrical body 3) of the distal end portion 3b, and contacts the contact surface 14b with the distal end of the cylindrical body 3. In this state, it is fixed to the cylinder 3 by a fixing screw 12. In this embodiment, the “contact portion” according to the invention of claim 4 is configured by the contact surface 14b.
By attaching the protrusion 4 to the cylinder 3 in this way, the protrusion 4 protrudes from the longitudinal end 1a of the cylinder 3 so as to be oriented in the longitudinal direction. Further, the tip 4 a of the protrusion 4 is positioned at a position where the tip portion 3 b of the cylinder 3 is extended in the longitudinal direction of the cylinder 3 as shown in FIG. 5.

  In the window glass punch 1 configured as described above, the user grips the base end portion 2b of the handle bar 2 with one hand and the intermediate portion 2c of the handle bar 2 with the other hand. Used in. In order to make a hole in a window glass (not shown) using the window glass punch 1, the cylinder 3 faces the window glass while the user holds the handlebar 2 as described above. The handlebar 2 is swung so as to advance, and the protrusion 4 is strongly struck against the window glass.

  When the protrusion 4 is struck against the window glass, the protrusion 4 penetrates the window glass. At this time, a through hole (not shown) is formed in the window glass. Then, immediately after the protrusion 4 penetrates the window glass, the tip portion 3b of the cylinder 3 is driven into the through hole, and the window glass starts from the through hole along the cylinder 3. It breaks like tearing. Since the one end portion 3 a of the cylindrical body 3 is formed so as to extend obliquely from the protrusion 4, a crack in the window glass extends along the cylindrical body 3 as the cylindrical body 3 advances. For this reason, the window glass is cut out in substantially the same shape as the cylinder 3 when the cylinder 3 is pushed. Thereafter, a hole is made in the window glass by pulling the cylindrical body 3 out of the window glass.

  For this reason, a hole can be made in the window glass by shaking the handle bar 2 and driving the protrusion 4 and the cylinder 3 into the window glass. Therefore, according to this embodiment, it is possible to provide a windowpane punch that can instantaneously open a hole with a simple operation. According to the experiment conducted by the inventor, by using the window glass punch 1, it was possible to open a hole even in the case of so-called netted glass or glass with a film attached thereto.

  In the window glass punch 1 according to this embodiment, the cylindrical body 3 is disposed on the handlebar 2 so that the protrusion 4 is disposed at a position farthest from the base end 2b of the handlebar 2. Installed. For this reason, since the said protrusion 4 is located in the site | part which becomes the maximum speed when shaking the handlebar 2, the protrusion 4 comes to penetrate the window glass reliably. Therefore, according to this embodiment, it is possible to provide a piercing tool for window glass that can be more easily pierced.

  The cylinder 3 according to this embodiment is detachably attached to the handle bar 2. For this reason, according to this window glass punch 1, the handle bar 2 can be replaced with one having a different length. Therefore, according to this embodiment, since the length of the handle bar 2 can be changed in accordance with the height of the window glass to be drilled, the window glass can be opened with a wide range of holes. Tools can be provided.

The coupling portion between the cylindrical body 3 and the protrusion 4 according to this embodiment is configured by overlapping the base portion 4b of the protruding body 4 on the wall surface extending in the longitudinal direction of the cylindrical body 3 and fixing them together. Yes. Further, the protrusion 4 is formed with a contact surface 14 b facing the tip of the cylindrical body 3.
For this reason, according to this embodiment, when the protrusion 4 is driven into the window glass, the contact surface 14b of the protrusion 4 abuts against the tip of the cylindrical body 3, whereby the movement of the protrusion 4 is restricted. The Therefore, since the protrusion 4 can be firmly supported by the cylindrical body 3, it is possible to provide a window glass hole punching device that can perform the hole opening more reliably.

The cylinder 3 according to this embodiment is formed by a cylinder. For this reason, according to this embodiment, since the ready-made cylinder can be easily manufactured, it is possible to provide a window glass punch with a low manufacturing cost.
The intermediate portion 2c of the handle bar 2 according to this embodiment is formed in an oval cross section (or an oval cross section). Thus, when the cross-sectional shape of the handle bar 2 is non-circular, it is possible to prevent the handle bar 2 from rotating in the user's hand. In addition, when the user holds the intermediate portion 2c, the direction (longitudinal direction) in which the cylindrical body 3 is directed can be sensed by hand. In this embodiment, a grip 7 is provided to reliably prevent the rotation. However, the grip 7 may not be attached to the handle bar 2.

The handle bar 2 according to this embodiment is attached to an intermediate portion 3d in the longitudinal direction of the cylindrical body 3. For this reason, the moment to rotate the cylinder 3 around the handlebar 2 can be reduced, so that the direction in which the protrusion 4 is directed deviates from the target direction after the handlebar 2 is started to swing. Can be prevented.
The protrusion 4 according to this embodiment has a tip 4a sharpened by forming an inclined surface 13 at the tip. However, when the pointed tip 4a is provided on the protrusion 4, the shape of the tip can be appropriately changed. For example, as the protrusion 4, a tip whose tip is formed in a conical shape can be used.

(Second Embodiment)
The protrusion can be configured as shown in FIGS. 6 and 7. 6 and 7, the same or equivalent members as those described with reference to FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.
The protrusion 4 shown in FIGS. 6 and 7 is formed by a columnar body having a circular cross section with a tip end pointed conically. The protrusion 4 is attached to the cylindrical body 3 via a holder 21 welded to the distal end portion 3 b of the cylindrical body 3.

The holder 21 has a through hole 22 for fitting the protrusion 4 and a fixing screw 23 for fixing the protrusion 4. In the state where the holder 21 is welded to the cylinder 3, the through hole 22 is positioned at substantially the same position as the peripheral wall 24 of the cylinder 3 in the radial direction of the cylinder 3 as shown in FIG. 7. .
The protrusion 4 is fixed to the holder 21 by being fitted into the through hole 22 with the tip portion protruding from the holder 21 and tightening the fixing screw 23. In this fixed state, the rear end portion (the end portion opposite to the tip portion) of the protrusion 4 faces the peripheral wall 24 of the cylinder 3 as shown in FIG. That is, in this embodiment, the rear end portion constitutes an abutting portion according to the fourth aspect of the present invention.
Even if the protrusion 4 is configured in this manner, the same effect as that obtained when the first embodiment is adopted can be obtained.

  In each embodiment mentioned above, although the example which formed the cylinder 3 with the cylinder was shown, the cylinder 3 is not limited to a cylinder. The cylinder 3 can be formed by, for example, a cylinder having a triangular cross section, a square cylinder having a square cross section, a cylinder having a polygonal other cross section, a cylinder having an elliptical cross section, or an oval cross section.

  DESCRIPTION OF SYMBOLS 1 ... Window glass drilling tool, 2 ... Handlebar, 3 ... Cylindrical body, 4 ... Projection, 11 ... Blade, 14 ... Notch, 14b ... Contact surface.

Claims (5)

A rod-shaped handlebar;
A cylindrical body provided at the tip of the handlebar so that the center line intersects the longitudinal direction of the handlebar;
A protrusion projecting so as to be oriented in the longitudinal direction at one end of the cylindrical body in the longitudinal direction;
The one end of the cylindrical body constitutes a blade whose thickness gradually decreases toward the tip, and gradually inclines so as to be positioned on the other end side of the cylindrical body as the distance from the protrusion increases. Formed,
The protrusion is formed so that the tip is sharpened.   2. The window glass punching device according to claim 1, wherein the cylindrical body is attached to the handlebar so that the protrusion is disposed at a position farthest from a base end portion of the handlebar. Features a window glass punch.   The window glass punching device according to claim 1 or 2, wherein the cylindrical body is detachably attached to the handle bar. 4. The window glass punching device according to claim 1, wherein a connecting portion between the cylindrical body and the protrusion extends in a longitudinal direction of the cylindrical body of the protruding body. 5. Constructed by stacking both on the wall and fixing both
A window glass punch, wherein the protrusion is formed with a contact portion facing the tip of the cylindrical body.   The window glass punching device according to any one of claims 1 to 4, wherein the cylindrical body is formed of a cylinder.

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