JP2003217041A - Burglar-proof device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burglar-proof device 1 capable of preventing deformation of projections 5. <P>SOLUTION: The burglar-proof device 1 is provided with a base member 3 to be fitted on a member 2 for climbing, a fixing means 4 for fixing the base member 3 to the member 2 for climbing, and the projections 5 protruded from the base member 3. The base member has a thick wall part 3-1 which is too thick to be bent by a human power and is provided with the projections 5 on the thick wall part 3-1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thief intrusion prevention device.

[0002]

2. Description of the Related Art In recent years, the construction method has been improved, and a climbing member made of a gutter, a pillar, a pole, or a plant attached to a building is more firmly attached to the outer wall of the building. Therefore, illegal entry of a building using a climbing member made of a gutter, a pillar, a pole, a plant, or the like can be performed more easily. As a result, trespassing from the ground, upstairs, neighbors, etc.
Damages such as robbery and female assaults are occurring frequently.

[0003] Here, as a thief avoiding belt for preventing entry, there is one disclosed in Japanese Patent Laid-Open No. 2000-187782.

[0004]

However, the above-mentioned conventional technique (Japanese Patent Laid-Open No. 2000-187782) for preventing intrusion is not sufficient for preventing intrusion. This is because, in the above-mentioned conventional technique, the belt is formed of a thin metal plate which is easily deformed because the belt is wound around and attached to the gutter. Since the acute V-shaped protrusion is formed only by press-cutting the thin belt, the protrusion may be deformed by the gripping force of the intruder. For this reason, for example, by a professional thief wearing gloves,
Not enough to stop trespassing.

Therefore, the present invention has been made in view of these circumstances, and an object thereof is to provide an intrusion prevention device in which the deformation of the protrusion is prevented.

[0006]

In order to achieve the above object, the present invention takes the following means. That is, a feature of the present invention is that a thief has a base member attached to a climbing member, a fixing means for fixing the base member to the climbing member, and a protrusion protruding from the base member. In the intrusion prevention device, the base member has a thick portion having a thickness that cannot be bent manually, and the protrusion is provided on the thick portion.

According to this thief intrusion prevention device, since the base member has a thick portion having a thickness, the effect of preventing the deformation of the projection provided on the thick portion is enhanced. The base member is formed in a rectangular flat plate shape, the thick portion,
It is preferable to have a bent portion that can be bent manually, and the bent portion and the thick portion are alternately provided along the longitudinal direction of the base member. According to this thief intrusion prevention device, since the bent portion is provided along the longitudinal direction of the base member in addition to the thick portion, the thief intrusion prevention device can be deformed.

The base member is formed in a tubular shape,
It is also preferable that the inner diameter of the base member is sized to fit onto the climbing member. According to this thief intrusion prevention device, since the inner diameter of the base member is formed to have a size to be fitted onto the climbing member, the thief intrusion prevention device can be easily attached before the climbing member is constructed. Further, the base member is formed in a semi-cylindrical shape, and mounting pieces are provided at both ends of the base member in the circumferential direction. A pair of the base members are formed into a cylindrical shape to fix the mounting pieces to each other. It is also preferable to fix it by means.

According to this thief intrusion prevention device, since the base member is formed in a semi-cylindrical shape and the pair of base members are formed in a cylindrical shape, the intrusion prevention device can be retrofitted to the climbing member. Can be done easily. It is preferable that the base member and the protrusion are made of the same material, and the protrusion is integrally formed with the base member.
In this way, the base member and the protrusions are made of the same material and integrally molded, so that mass productivity can be improved.

It is preferable that the base member is made of synthetic resin, the protrusion is made of metal, and the protrusion is embedded in the base member. Since the protrusion is embedded in the base member in this way, it is possible to further enhance the fixation of the protrusion as compared with the case where the protrusion is bonded to the base member. Then, in a thief intrusion prevention device having a base member attached to the climbing member, a fixing means for fixing the base member to the climbing member, and a protrusion protruding from the base member, the base member is It is preferable that the outer diameter of the climbing member is formed so that it can be fitted onto the outer diameter of the climbing member.

As described above, the base member is formed so as to be fitted onto the outer diameter of the climbing member, so that the thief intrusion preventing device can be easily attached.

[0012]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1-5 has shown 1st Embodiment of the thief intrusion prevention apparatus 1 which concerns on this invention. Also, FIG.
Shows an example in which the thief intrusion prevention device 1 according to the present invention is applied to the climbing member 2 incidental to a building. The climbing member 2 is formed of a gutter, a pillar, a pole, a plant, or the like. A thief intrusion prevention device 1 according to the present invention comprises a base member 3 attached to a climbing member 2 and a fixing means 4 for fixing the base member 3 to the climbing member 2.
And a projection 5 projecting from the base member 3 (see FIG. 1).

As shown in FIG. 3, the base member 3 is formed in a rectangular flat plate shape and has a thick portion 3-1 having a thickness that cannot be bent manually and a bent portion 3-2 that can be manually bent. Have and. The rectangular base member 3 is
It has a long side 3a and a short side 3b. A thick portion 3-1 and a bent portion 3-2 are alternately provided along the long side 3a.
Further, the material of the base member 3 is preferably a synthetic resin such as vinyl chloride or polypropylene from the viewpoint of low cost and easy processing, but the material is not limited to this.

Mounting holes 3-1A are provided at both ends in the longitudinal direction of the thick portion 3-1 (see FIG. 3). Further, regarding the degree of thickness of the thick portion 3-1, not only the degree that the bending cannot be manually performed as described above, but also the degree that the protrusion 5 can be embedded in the thick portion 3-1 is considered. However, the degree of thickness of the thick portion 3-1 depends on various uses of the climbing member 2 and the like.
It may be changed (see FIGS. 4 and 5). Bend 3-
2, the groove 3 having a triangular cross-section, as shown in FIG.
-2A is recessed. Regarding the depth of the groove 3-2A having a triangular cross section, which is recessed from the surface of the base member 3, the bending portion 3-2 can be manually bent and can be cut with a tool such as scissors. To do. However, the depth of the groove 3-2A having a triangular cross section may be changed according to various uses of the climbing member 2 and the like.

As shown in FIG. 4, the fixing means 4 comprises a fixing tool 4A such as a nail, a screw, a fixing screw or the like to be inserted into the mounting hole 3-1A, and an adhesive tool 4B such as an adhesive.
Since the climbing member 2 made of a pillar and a plant is made of a wooden material, either the fixing tool 4A such as a nail, a screw, a fixing screw or the like or the adhesive tool 4B such as an adhesive may be used. Gutter,
Since the climbing member 2 made of a pole is made of a plastic material, an adhesive tool 4B such as an adhesive is used. As shown in FIG. 5, the protrusion 5 includes a mounting portion 5A embedded in the base member and a tip portion 5B.
The mounting portion 5A is wide and has a pointed shape from the mounting portion 5A to the tip portion 5B. By making the tip portion 5B sharp, the effect of preventing illegal intrusion is enhanced. The material of the protrusions 5 is preferably metal such as stainless steel from the viewpoint of low cost and prevention of deformation of the protrusions, but the material is not limited to this.

According to the first embodiment, the thief intrusion prevention device 1 is attached to the climbing member 2 as follows. First, the rectangular base member 3 is formed so as to substantially match the outer diameter of the climbing member 2 in the circumferential direction.
Since the length of the long side 3a of the
Cut 2 Next, in the case of the base member 3 made of a wooden material such as a pillar or a plant, an adhesive tool 4B such as an adhesive is applied to the back surface 3Y side of the base member 3, and the base member 3 is made to correspond to the shape of the climbing member 2. After fitting, the mounting hole 3-1
When a fixing tool 4A such as a nail, a screw, or a fixing screw is inserted into A, the fixing to the climbing member 2 is further strengthened, as compared with the case where the fixing tool 4B alone is used. In the case of the base member 3 made of a plastic material such as a gutter or a pole, an adhesive 4B such as an adhesive is attached to the back surface 3Y (the surface in contact with the climbing member) of the base member 3 to attach the base member 3 to the climbing member 2 The external fitting is performed after matching the shape of.

FIGS. 6 to 7 show a second embodiment of the thief intrusion prevention device 1 according to the present invention. A thief intrusion prevention device 1 according to the present invention has a base member 3 attached to a climbing member 2, fixing means 4 for fixing the base member 3 to the climbing member 2, and a projecting member provided on the base member 3. It has a protrusion 5 (see FIG. 6). As shown in FIG. 7, the base member 3 is formed in a rectangular flat plate shape, and has a thick portion 3-1 having a thickness that cannot be bent manually.
And a bending portion 3-2 that can be bent manually. The rectangular base member 3 has a long side 3a and a short side 3b. The thick portion 3-1 and the bent portion 3 along the long side 3a
-2 and 2 are provided alternately.

The thick portion 3-1 is also formed in a rectangular shape. Along the longitudinal direction of the thick portion 3-1, a space 3-
1d is placed, and a plurality (four in this case) of acute-angled V-shapes are press-cut, and cut pieces 5D having a function as the protrusions 5 are provided. As for the degree of thickness of the thick portion 3-1, not only the degree that it cannot be manually bent as described above, but also the degree that it is possible to press-cut an acute V-shape. However, this thick part 3-
The degree of thickness in 1 may be changed according to various uses of the climbing member 2 and the like.

The cut piece 5D is formed so that the pointed portions 5C are vertically symmetrical (from the center in the longitudinal direction) toward both ends in the longitudinal direction of the thick portion 3-1. In this embodiment, the thick portion 3-1 provided on the base member 3 and the cut piece 5D having a function as the protrusion 5 are integrally formed, and thus only one member is required. Processing can be performed. Therefore, the cost for the base member 3 and the protrusion 5 which are separately formed and made of different materials from the first embodiment can be eliminated, and the deformation of the protrusion 5 can be prevented.

As in the first embodiment, the bent portion 3-2 is provided with a groove 3-2A. Regarding the depth of the groove 3-2A recessed from the surface of the base member 3, the bending portion 3-2 can be bent manually.
Make it possible to cut with tools such as scissors. However, the depth of the groove 3-2A may be changed according to various uses of the climbing member 2 and the like (see FIGS. 6 and 7). As for the fixing means 4, an adhesive tool 4 such as an adhesive is used.
It consists of B. According to the second embodiment, as in the case of the first embodiment, the thief intrusion prevention device 1 can be easily attached to the climbing member 2.

That is, the thief intrusion prevention device 1 is attached to the climbing member 2 as follows. First, in order to take the length of the long side 3a of the rectangular base member 3 so as to substantially match the size of the outer diameter of the climbing member 2 in the circumferential direction, the corresponding bent portion 3-2 is cut out. Next, an adhesive 4B such as an adhesive is attached to the back surface 3Y (surface contacting the climbing member) side of the base member 3, and the base member 3 is fitted to the shape of the climbing member 2 and then fitted.

In the first embodiment, when the climbing member 2 made of a wooden material such as a pillar or a plant is used, both ends of the thick portion 3-1 of the base member 3 in the longitudinal direction are
Although the attachment hole 3-1A is provided, the attachment hole 3-1A is provided in the base member 3 in the second embodiment as well, and the fixture 4A is provided.
You may fix with. 8 to 9 show a third embodiment of the thief intrusion prevention device 1 according to the present invention. A thief intrusion prevention device 1 according to the present invention includes a base member 3 attached to a climbing member 2, fixing means 4 for fixing the base member 3 to the climbing member 2, and the base member 3
And a projection 5 projecting from the bottom (see FIG. 8).

As shown in FIG. 9, the base member 3 is formed in a rectangular flat plate shape, and has a thick portion 3-1 having a thickness that cannot be bent manually and a bent portion 3-2 that can be manually bent. Have and. The rectangular base member 3 is
It has a long side 3a and a short side 3b. A thick portion 3-1 and a bent portion 3-2 are alternately provided along the long side 3a.
In this third embodiment, as shown in FIG. 9, the base member 3 is provided with a rectangular thick portion 3-1 having a thickness that cannot be bent manually. Spaces 3-1d are provided along the longitudinal direction of the thick portion 3-1 and a plurality (here, 14
The present invention is provided with a conical projection 5).

The protrusion 5 is formed so that the pointed portion 5C of the protrusion 5 projects from the thick portion 3-1 on the side opposite to the climbing member 2. The base member 3 and the protrusion 5
Are made of the same material. These materials are preferably synthetic resins such as vinyl chloride and polypropylene, metals such as stainless steel, etc. from the viewpoints of easy processing at low cost and preventing deformation of the protrusions 5. It is not limited to. Bend 3-
Regarding No. 2, as in the first embodiment, the groove 3-2A is provided as a recess. Regarding the depth of the groove 3-2A recessed from the surface of the base member 3, the bent portion 3-2
Can be bent manually and can be cut with tools such as scissors. However, the depth of the groove 3-2A may be changed according to various uses of the climbing member 2 and the like (see FIGS. 8 and 9).

The fixing means 4 comprises an adhesive tool 4B such as an adhesive. In this embodiment, the protrusion 5 and the base member 3 made of the same material are formed by casting. Therefore, the cost for the protrusion 5 and the base member 3 which are separately formed and made of different materials from the first embodiment can be eliminated, and the deformation of the protrusion 5 can be prevented. Further, it is possible to omit the press-cut processing of the cut piece 5D having the function as the protrusion 5 of the second embodiment and the projection processing after the press-cut, and perform the processing by only integral molding. Therefore, the complexity of the processing of the second embodiment can be eliminated.

According to the third embodiment, the first and second
As in the case of the embodiment, the thief intrusion prevention device 1 can be easily attached to the climbing member 2 as follows. First, the long side 3a of the rectangular base member 3 is formed so as to substantially match the outer diameter of the climbing member 2 in the circumferential direction.
Cut off the corresponding bent portion 3-2 to obtain the length. Next, an adhesive 4B such as an adhesive is attached to the back surface 3Y (surface contacting the climbing member) side of the base member 3, and the base member 3 is fitted to the shape of the climbing member 2 and then fitted.

In the first embodiment, when the climbing member 2 made of a wooden material such as a pillar or a plant is used, both ends of the thick portion 3-1 of the base member 3 in the longitudinal direction are
Although the mounting hole 3-1A is provided, the mounting hole 3-1A is also provided in the base member 3 in the third embodiment to fix the fixture 4A.
You may fix with. FIG. 10 shows a thief intrusion prevention device 1 according to a fourth embodiment of the present invention. In the fourth embodiment, as shown in FIG. 10, a base member 3 attached to the climbing member 2, fixing means 4 for fixing the base member 3 to the climbing member 2, and the base member 3
And a projection 5 projecting from the.

The base member 3 is formed in a tubular shape in advance so that it can be fitted onto the outer diameter of the climbing member. The shape of the cylinder is not limited to a circle or an ellipse as shown in FIG. 10, and may be a polygon or the like. The protrusion 5 is provided so that the pointed portion 5C of the protrusion 5 protrudes from the base member 3 on the side opposite to the climbing member 2. The fixing means 4 is composed of an adhesive tool 4B such as an adhesive. In the case of the fourth embodiment, the base member 3 is formed in a tubular shape in advance so that the base member 3 can be fitted onto the outer diameter of the climbing member 2. Easy to install.

In the first embodiment, when the climbing member 2 made of a wooden material such as a pillar or a plant is used, both ends of the thick portion 3-1 of the base member 3 in the longitudinal direction are
Although the mounting hole 3-1A is provided, the mounting hole 3-1A is also provided in the base member 3 in the third embodiment to fix the fixture 4A.
You may fix with. FIG. 11 shows a thief intrusion prevention device according to a fifth embodiment of the present invention. In this fifth embodiment, as shown in FIG. 11, a base member 3 attached to the climbing member 2, a fixing means 4 for fixing the base member 3 to the climbing member 2, and a protrusion to the base member 3. The projection 5 is provided.

The base member 3 is formed in a semi-cylindrical shape, and a rectangular mounting piece 3B is provided at both ends 3A of the semi-cylindrical base member 3.
Is provided. A plurality of (two in this case) fixing openings 7 are provided at intervals 3d along the longitudinal direction of the mounting piece 3B. The base member 3 has a thickness from the viewpoint of preventing the deformation of the protrusions 5. The protrusion 5 is provided so that the pointed portion 5C of the protrusion 5 protrudes from the base member 3 on the side opposite to the climbing member 2.

As shown in FIG. 10, the fixing means 4 is composed of bolts and nuts. However, it is not limited to bolts and nuts, but nails,
It may be constituted by a fixing means such as a screw or a fixing screw.
According to the fifth embodiment, the thief intrusion prevention device 1 is attached to the climbing member 2 as follows. First, the pair of base members 3 formed in a semi-cylindrical shape is externally fitted to the climbing member 2, so that the pair of base members 3 is formed in a cylindrical shape. Next, the fixing openings 7 formed by combining the pair of base members 3 are fixed by the fixing means 4.

FIG. 12 shows a thief intrusion prevention device 1 according to a sixth embodiment of the present invention. In the sixth embodiment, as shown in FIG. 12, the base member 3 attached to the climbing member 2 and the base member 3 are attached to the climbing member 2.
It has a fixing means 4 for fixing to the base member 3 and a protrusion 5 protruding from the base member 3. The base member 3 is formed in a tubular shape, and a slit is provided in one side portion of the tubular base member 3. A pair of rectangular mounting pieces 3B is provided from this slit toward the side opposite to the climbing member 2. A plurality of (two in this case) fixing openings 7 are provided at intervals 3d along the longitudinal direction of the mounting piece 3B. The base member 3 has a thickness from the viewpoint of preventing the deformation of the protrusions 5.

The projection 5 is provided so that the pointed portion 5C of the projection 5 projects from the base member 3 on the side opposite to the climbing member 2. The fixing means 4 is composed of bolts and nuts, as shown in FIG.
However, it is not limited to the bolt and the nut, and may be a fixing means such as a nail, a screw, and a fixing screw. According to the sixth embodiment, the thief intrusion prevention device 1 is attached to the climbing member 2 as follows. First, the cylindrical base member 3 is fitted onto the climbing member 2. Then, the fixing openings 7 formed by combining a pair of the mounting pieces 3B provided on the base member 3 are fixed by the fixing means 4.

FIG. 13 shows a thief intrusion prevention device according to a seventh embodiment of the present invention. In this seventh embodiment,
As shown in FIG. 13, a base member 3 attached to the climbing member 2, a fixing means 4 for fixing the base member 3 to the climbing member 2, and a protrusion 5 protruding from the base member 3. Have The base member 3 has a rectangular shape and a flat plate shape. A plurality of (here, four) base members 3 are arranged in parallel along the lateral direction of the base member 3 at intervals d. The base member 3 has a thickness from the viewpoint of preventing the deformation of the protrusions 5.

Regarding the protrusion 5, the pointed portion 5 of the protrusion 5 is provided on the side opposite to the side where the base member 3 contacts the climbing member 2.
It is provided so that C projects. The fixing means 4 is composed of a connecting member 4C. The connecting member 4C for fixing the base member 3 to the climbing member 2 is provided with a connecting shaft 4D and a connecting opening 4E. Further, as shown in FIG. 12, this connecting member 4C is for connecting a plurality of (in this case, four) base members 3 arranged side by side and fixing these connected base members 3 to the climbing member 2. A plurality (two here) are provided. The connecting member 4C is formed to be bendable.

The connecting member 4C between the base members 3 provided at intervals d and one end of the connecting member 4C is connected to the connecting opening 4E and serves as a fixing means 4. 4D is provided. on the other hand,
A connecting opening 4E for holding the connecting shaft 4D is provided at the other end of the connecting member 4C. In addition, in the case of this embodiment, the connecting member 4C and one end portion of the connecting member 4C between the base members 3 provided at intervals d are
A connecting shaft 4D is provided. Since a plurality (four here) of connection shafts 4D are provided at intervals a, it is possible to cope with various outer diameters of the various climbing members 2 in the circumferential direction. Also, a plurality of (here, three) connection openings 4E are provided at intervals b. Therefore, when fixing the thief intrusion prevention device to the climbing member 2,
The fine adjustment by the connection opening 4E further strengthens the fixing.

According to the seventh embodiment, the thief intrusion prevention device 1 is attached to the climbing member 2 as follows. First, the size of one side of the connecting member 4C is cut out so as to approximately match the size of the outer diameter of the climbing member 2 in the circumferential direction. Next, the connecting member 4C is moved to the climbing member 2
Then, the connecting shaft 4D provided at one end of the connecting member 4C is inserted into the connecting opening 4E provided at the other end of the connecting member 4C. As a result, the thief intrusion prevention device 1 is fixed to the climbing member 2.

[0038]

[Other Disclosure] The thief intrusion prevention device 1 shown in FIG.
A base member 3 attached to the outer wall material 8 of the veranda;
It has a fixing means 4 for fixing the base member 3 to the outer wall member 8 of the veranda, and a projection 5 protruding from the base member 3. The base member 3 is formed in a semi-cylindrical shape, and rectangular mounting pieces 3B are provided on both ends 3A of the base member 3 of the semi-cylindrical 3C. A plurality of fixing openings 7 are provided along the longitudinal direction of the mounting piece 3B. The fixing opening 7 is provided not only in the mounting piece 3B but also in the half cylinder 3C of the base member 3.

The protrusion 5 is provided so that the pointed portion 5C of the protrusion 5 projects from the base member 3 on the side opposite to the outer wall member 8 of the veranda. As for the fixing means 4, nails,
It is composed of screws and fixing screws. The thief intrusion prevention device 1 having such a structure is attached to the outer wall material of the veranda as follows. First, the base member 3 formed in a semi-cylindrical shape is externally fitted on the outer wall member 8 of the veranda. next,
The fixing means 4 is inserted into the fixing opening 7. In addition, half cylinder 3C
The reason why the fixing opening 7 is provided in this is that the thief intrusion prevention device 1 can be attached to the outer wall member 8 of the veranda even when the thief intrusion prevention device 1 cannot be fixed by the fixing opening 7 provided in the attachment piece 3B. .

[0040]

According to the intrusion prevention device of the present invention, it is possible to prevent the deformation of the protrusion.

[Brief description of drawings]

FIG. 1 is a front view showing a thief intrusion prevention device according to a first embodiment of the present invention.

FIG. 2 is an overall view of the same embodiment.

FIG. 3 is a plan view when the base member of the same embodiment is formed into a flat plate shape.

FIG. 4 is a plan view of the same embodiment.

5 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 6 is a front view showing a thief intrusion prevention device according to a second embodiment of the present invention.

FIG. 7 is a plan view when the base member of the same embodiment is formed into a flat plate shape.

FIG. 8 is a front view showing a thief intrusion prevention device according to a third embodiment of the present invention.

FIG. 9 is a plan view of the base member of the same embodiment when it is formed into a flat plate shape.

FIG. 10 is a plan view showing a thief intrusion prevention device according to a fourth embodiment of the present invention.

FIG. 11 is a perspective view showing a thief intrusion prevention device according to a fifth embodiment of the present invention.

FIG. 12 is a perspective view showing a thief intrusion prevention device according to a sixth embodiment of the present invention.

FIG. 13 is a plan view of a thief intrusion prevention device according to a seventh embodiment of the present invention, which has a flat plate shape.

FIG. 14 is a perspective view showing another thief intrusion prevention device.

[Explanation of symbols]

1 Thief intrusion prevention device 2 climbing member 3 Base member 3-1 Thick part 3-2 Bending part 3A both ends 3B mounting piece 4 fixing means 5 protrusions

Claims (7)

[Claims] 1. A thief intrusion prevention device comprising: a base member attached to a climbing member; fixing means for fixing the base member to the climbing member; and a protrusion protruding from the base member. The thief intrusion prevention device, wherein the base member has a thick portion having a thickness that cannot be bent manually, and the thick portion is provided with the protrusion. 2. The base member is formed in a rectangular flat plate shape, and has the thick portion and a bent portion that can be bent manually, and the bent portion and the thick portion are long sides of the base member. The thief intrusion prevention device according to claim 1, wherein the device is provided alternately along the direction. 3. The thief intrusion prevention device according to claim 1, wherein the base member is formed in a tubular shape, and the inner diameter of the base member is sized to fit onto the climbing member. 4. The base member is formed in a semi-cylindrical shape, and mounting pieces are provided at both ends of the base member in the circumferential direction. The pair of base members are formed in a cylindrical shape to form the mounting pieces. The thief intrusion prevention device according to claim 1, wherein the device is fixed by the fixing means. 5. The thief according to claim 1, wherein the base member and the protrusion are made of the same material, and the protrusion is integrally formed with the base member. Intrusion prevention device. 6. The base member is made of synthetic resin,
The thief intrusion prevention device according to any one of claims 1 to 4, wherein the protrusion is made of metal, and the protrusion is embedded in the base member. 7. A thief intrusion prevention device comprising: a base member attached to a climbing member; fixing means for fixing the base member to the climbing member; and a protrusion protruding from the base member. The thief intrusion prevention device, wherein the base member is formed so as to be fitted onto the outer diameter of the climbing member.