JP2007040456A - Crime preventive implement for fixing bolt and fixing nut - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it hard to expose a fixing bolt and a fixing nut to the outside when fixing a fixed object to an object by the fixing bolt and the fixing nut. <P>SOLUTION: A cavity is formed between the surface of a license plate 1 and a collar part 11 of a collar member 10 mounted to the lower end of a head 2a of the fixing bolt 2 for fixing the license plate 1. A crowning member 20 is put on the head 2a of the fixing bolt 2 and the collar member 10. The lower end of a sidewall part 22 of the crowning member 20 is formed with a collar member locking claw 23 inserted between the collar part 11 and the surface of the license plate 1. A circular projecting part is formed at the lower end of an internal wall surface of a peripheral wall member 30 of hollow cylinder shape. The circular projecting part presses the sidewall part 22 of the crowning member 20, and peripheral wall member locking claws 24, 25 are engaged with the circular projecting part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention can be used when a fixed object is fixed to an object to be screwed with a fixing bolt, or when a fixed object is fixed to a bolt fixed to the object using a fixing nut. The present invention relates to a security bolt for a fixing bolt and a fixing nut for protecting a fixed object from theft.

When fixing parts such as automobile license plates and aluminum wheels to the vehicle body, or when fixing devices such as transformers and vending machines to the installation location, usually fixing them using fixing bolts or fixing nuts. Has been done.

For example, as shown in FIG. 23, the number plate 1 is conventionally fixed to a vehicle body M such as an automobile by fixing bolts 2.

In recent years, crimes of stealing only the license plate 1 from the vehicle body M of a parked automobile or the like are increasing. A person who commits this crime removes the fixing bolt 2 and steals only the license plate 1 in a short time using a commercially available instrument such as a driver.

In order to prevent such crimes, a fixing bolt 2 having a specially-shaped recess 103 as shown in FIG. 24 has already been proposed. The fixing bolt 2 shown in FIG.
3 is configured so that it can be easily detached from the vehicle body M only when the dedicated instrument 105 having the convex portion 104 fitted to the third is used.

However, even when the number plate 1 is fixed to the vehicle body M using the fixing bolt 2 shown in FIG. 24, the head of the fixing bolt 2 is exposed, so that pliers, pliers and the like are generally commercially available. It was possible for a criminal to steal the license plate 1 in a relatively short time by loosening the bolt 2 using a tool.

In order to solve the above problems, the present invention provides a head of the fixing bolt when a fixing object into which the fixing bolt can be inserted is fixed to an object having a female screw portion screwed with the fixing bolt. A lower end of the head of the fixing bolt in a state in which a gap is formed between the flange and the surface of the first object to be fixed. A fixing member, a top plate portion, and a plurality of side wall portions extending downward from a peripheral portion of the top plate portion; A crown member to be crowned, wherein when the crown is attached to the head of the fixing bolt and the flange member at the lower end of the plurality of side wall portions, the surface of the object to be fixed and the flange of the flange member A crown member in which a hook claw for a collar member that can be inserted into a gap portion formed between the two parts is formed; A hollow cylindrical peripheral wall member that covers the head of the fixing bolt and the outer surface of the crown member that is attached to the flange member, and protrudes inward in the lower end portion of the inner peripheral wall surface of the peripheral wall member. And a peripheral wall member formed with a circular projection that presses the side wall of the crown member, and the crown member is engaged with the upper surface portion of the circular projection of the peripheral wall member. The peripheral wall member locking claw is formed with a peripheral wall member locking claw extending downward from the peripheral edge of the top plate portion.

Here, the flange member includes a flange portion that is disposed around the head portion of the fixing bolt so as to extend in a peripheral direction thereof, a lower end surface of the head portion of the fixing bolt, and the object to be fixed. May be constituted by a bottom plate portion that is held and fixed by the surface of the base plate, and an upright portion interposed between the bottom plate portion and the flange portion. The fixing bolt is a fixing bolt in which a tapered portion is formed on the lower end surface of the head, and the flange member has a maximum length of the fixing bolt head of A and a minimum length of B. And a hollow disc-shaped flange having an outer diameter a and an inner diameter b satisfying the condition of B <b <A <a, the flange being disposed so as to extend in the inner direction, and the fixing You may be comprised by the some latching claw contact | abutted to the side surface of the head part of a volt | bolt.

  Furthermore, a top plate portion may be disposed on the upper portion of the peripheral wall member.

Further, in order to solve the above-mentioned problem, the present invention is configured such that when a fixed object through which a bolt fixed to an object can be inserted is fixed to the bolt with a fixing nut screwed to the bolt, the fixing nut A flange having a flange extending in the peripheral direction and attachable to the lower end of the fixing nut in a state where a gap is formed between the flange and the surface of the fixed object. A crown member that includes a member, a top plate portion, and a plurality of side wall portions extending downward from a peripheral edge portion of the top plate portion, and is attached to the fixing nut on which the flange member is mounted. A gap portion formed between the surface of the fixed object and the flange portion of the flange member when the fixing nut and the flange member are attached to the lower end portions of the plurality of side wall portions. A crown member formed with a hooking claw for a collar member that can be inserted into the hook, the fixing nut and the front A hollow cylindrical peripheral wall member that covers an outer surface portion of the crown member that is crowned on a brim member, and is protruded inwardly at a lower end portion of an inner peripheral wall surface of the peripheral wall member, and is a side wall of the crown member A peripheral wall member formed with a circular protrusion that presses the portion, and the crown member is provided with a peripheral wall member locking claw that engages with an upper surface portion of the circular protrusion of the peripheral wall member. And the latching claw for peripheral wall members extended below from the peripheral part of the said top-plate part is formed, It is characterized by the above-mentioned.

Here, the flange member is clamped and fixed by a flange portion that is arranged around the fixing nut so as to extend in the peripheral direction, a lower end surface of the fixing nut, and a surface of the fixed object. It may be constituted by a bottom plate portion to be formed and an upright portion interposed between the bottom plate portion and the flange portion. The fixing nut is a fixing nut having a tapered portion formed at a lower end surface thereof, and the flange member has an outer diameter a when the maximum length of the fixing nut is A and the minimum length is B. A hollow disc-shaped flange portion whose inner diameter b satisfies the condition of B <b <A <a, and is disposed so as to extend inward in the flange portion and abuts against a side surface of the fixing nut. You may be comprised with the some latching claw.

  Furthermore, a top plate portion may be disposed on the upper portion of the peripheral wall member.

According to the present invention, when a fixed object is fixed to an object to be screwed with a fixing bolt, or when a fixed object is fixed to a bolt fixed to the object using a fixing nut. It is possible to make it difficult to expose the head and the fixing nut of the fixing bolt used when loosening the fixing bolt and the fixing nut to the outside, and to steal the fixed object. .

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a license plate that is a fixed object to which Example 1 of the present invention is mounted, and FIG. 2 is an exploded perspective view thereof.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a number plate that is a fixed object that is attached to a vehicle body M that is an object. Reference numeral 10 denotes a flange member attached to the lower end of the head of the fixing bolt 2.
The flange member 10 includes a flange portion 11 disposed around the head of the fixing bolt 2 so as to extend in the peripheral direction, a lower end surface of the head of the fixing bolt 2, and the surface of the license plate 1. And the upright portion 13 interposed between the bottom plate portion 12 and the flange portion 11 so that a gap is formed between the surface of the license plate 1 and the flange portion 11. And is composed of. Reference numeral 20 denotes a crowning member that is crowned on the head of the fixing bolt 2, and 30 is a peripheral wall member that covers the outer surface of the crowning member 20. In the first embodiment, the crown member 20 is made of metal, and the peripheral wall member 30 is also made of metal. However, the material constituting the crown member 20 and the material constituting the peripheral wall member 30 are as described above. The material is not limited.

Here, the configuration of the crown member 20 and the peripheral wall member 30 will be described with reference to FIGS. 3 and 4. 3 is an exploded perspective view showing configurations of the crown member 20 and the peripheral wall member 30, and FIG. 4 is a cross-sectional view of the crown member 20 and the peripheral wall member 30 in a state where the crown member 20 and the peripheral wall member 30 are mounted on the head 2a. is there.

  First, the configuration of the metal crowning member 20 will be described.

The crown member 20 includes a top plate portion 21 and a plurality of side wall portions 22 extending downward from the peripheral portion of the top plate portion 21 (in the direction of the bolt 2 as viewed from the top plate portion 21) and the peripheral wall member locking. The nail | claw 24 and 25 are comprised.

As shown in FIG. 4, the side wall portion 22 is inserted into a gap S formed between the flange portion 11 of the flange member 10 and the surface of the license plate 1, and is formed on the lower end surface of the flange portion 11. A hook claw 23 for the heel member that comes into contact is formed.

The crown member 20 having elasticity made of metal includes a head 2a of the fixing bolt 2 and a flange member 10.
The side wall portion 22 and the peripheral wall member locking claws 24, 25 are formed in a slightly opened state so that they can be easily covered.

As shown in FIG. 4, a circular protrusion 31 is formed at the lower end portion of the inner peripheral wall surface of the peripheral wall member 30 so as to protrude inward along the entire periphery. By being pressed by the circular protrusion 31 of the peripheral wall member 30, the hook member locking claw 23 of the crown member 20 can be maintained in contact with the lower end surface of the hook portion 11.

Here, as shown in FIG. 3, the peripheral wall member locking claws 24, 25 arranged on the elastic metal crown member 20 have lower ends thereof as shown in FIG. 5. It is formed so as to contact the upper surface portion of the circular protrusion 31 of the peripheral wall member 30. As shown in FIG. 5, the peripheral wall member locking claws 24, 25 are formed so as to abut on the upper surface of the circular protrusion 31 in a substantially perpendicular state, so that they are attached to the crown member 20. The peripheral wall member 30 that is present cannot be easily removed.

As described above, according to this embodiment, in the state shown in FIG. 4 in which the crown member 20 and the peripheral wall member 30 are attached to the head 2a of the fixing bolt 2 to which the flange member 10 is attached, the fixing bolt 2 is fixed. It is extremely difficult to expose the head 2a of the bolt 2 to the outside.

In the first embodiment configured as described above, when it is necessary to remove the license plate for automobile repair or the like, the peripheral wall member 30 is used by using a dedicated unlocking tool 60 as shown in FIG. And the crown member 20 can be easily removed.

The unlocking tool 60 is a member having a hollow cylindrical shape as shown in FIGS. As shown in FIGS. 7A and 7B, the outer diameter of the locking release tool 60 is the peripheral wall member 3.
A value that can be inserted inside 0 is selected. Further, the inner diameter of the locking release tool 60 is set so that the peripheral wall member 30
The circular protrusion 31 is selected so as to be equal to or smaller than the inner diameter of the upper surface portion.

Such an unlocking tool 60 is fitted into the peripheral wall member 30 as shown in FIG. 7 (a), and its tip is placed on the upper surface portion of the circular protrusion 31 as shown in FIG. 7 (b). When brought into contact, the engagement state between the circumferential wall member locking claws 24 and 25 of the crown member 20 and the circular protrusion 31 can be released. Therefore, as shown in FIG. 7C, the peripheral wall member 30 can be separated from the bolt head together with the locking release member 60.

If the crown member 20 is completely exposed as shown in FIG. 7C, the crown member 20 can be easily removed from the head of the bolt. Therefore, the head of the bolt can be easily exposed and the license plate can be easily removed.

Here, as shown in FIG. 8, the protrusions 32 and 33 are provided on the upper side of the inner peripheral wall surface of the peripheral wall member 30, and the outer peripheral wall surface of the unlocking member 60 so as to correspond to the positions of the protrusions 32 and 33. Groove 6
1 and 62 may be provided so that the locking release member 60 can be fitted into the peripheral wall member 30 only when the groove portions 61 and 62 match the projecting portions 32 and 33, respectively.

As described above, the first embodiment exhibits a crime prevention function when the number plate 1 as the fixed object is fixed to the vehicle body M as the target object with the fixing bolt 2. However, the crime prevention effect of the first embodiment is not limited to the fixing bolt that fixes the fixed object to such an object. For example, as shown in FIG. 9, the present embodiment is also applicable to a case where a fixed object 5 such as a vending machine or a transformer is fixed to a bolt 3 embedded and fixed to a concrete floor F by a fixing nut 4. If 1 is used, the crime prevention effect with respect to this fixed nut can be acquired. FIG.
4b is a washer.

Hereinafter, the case where this Example 1 is used as a crime prevention tool with respect to a fixed nut is demonstrated using drawing.

FIG. 10 is a perspective view showing a configuration when the first embodiment is used as a security device for a fixing nut, and FIG. 11 is an exploded perspective view thereof.

10 and 11, F is a floor formed of concrete or the like, and 3 is a bolt partially embedded in the floor F. Reference numeral 5 denotes an object to be fixed such as a vending machine or a transformer that is fixed to the floor F that is an object by the bolt 3 and the fixing nut 4. Reference numeral 10 denotes a flange member attached to the lower end of the fixing nut 4.

Since the structure of the collar member 10, the crown member 20, and the surrounding wall member 30 is the same structure as the structure demonstrated previously using FIG. 3, the description is abbreviate | omitted. That is, if the head 2 a of the fixing bolt 2 described above is regarded as the fixing nut 4, the first embodiment can be used as a security device for the fixing nut.

As described above, when the first embodiment is used as a security device for a fixing nut, as shown in FIG. 11, the hook member 10 is inserted through the bolt 3 through which the fixed object 5 is inserted, and then fixed. Nut 4
To fix the fixed object 5 to the floor F as the object. In such a state, after covering the fixing nut 4 and the flange member 10 with the crown member 20, the peripheral wall member 30 is mounted to obtain the state shown in FIG. A cross-sectional view of the state shown in FIG. 10 is shown in FIG.

10 and 12, in the state in which the peripheral wall member 30 is mounted with the crown member 20 covered, the crown member 20 and the peripheral wall member 30 are in the same state as the state shown in FIG. It becomes. That is, in the state shown in FIGS. 10 and 12 in which the crown member 20 and the peripheral wall member 30 are mounted on the fixing nut 4, it is extremely difficult to expose the fixing nut 4 to the outside.

Here, in Example 1 demonstrated above, as shown in FIG. 13, the top-plate part 32 may be provided in the upper part of the surrounding wall member 30, and the surrounding wall member 30 may be comprised in cap shape. When such a cap-shaped peripheral wall member 30 and the crown member 20 are attached to the fixing nut 4 as shown in FIG. 14, for example, the cap-shaped peripheral wall member 30 is fixed without breaking. The nut 4 cannot be exposed to the outside.

In the second embodiment of the present invention, as shown in FIG. 15, a taper portion 2t is formed on the lower end surface of the head 2a of the fixing bolt 2, and as shown in FIG. A fixing bolt crime prevention device that can be used for the fixing bolt 2 in which a part of the taper portion 2t is buried in the fixed object 5 when 5 is fixed to the floor F, which is an object. is there.

FIG. 17 is an exploded perspective view showing the configuration of the second embodiment. In FIG. 17, since the structure of the surrounding wall member 30 and the crown member 20 is the same structure as Example 1 demonstrated previously, the description is abbreviate | omitted. Reference numeral 2 denotes a fixing bolt, and a tapered portion 2t is formed integrally with the head portion 2a on the lower end surface of the head portion 2a. Reference numeral 10 denotes a flange member attached to the lower end of the head 2 a of the fixing bolt 2. F is a floor which is an object that can be screwed to the fixing bolt 2, and 5 is an object to be fixed to the floor F by a fixing bolt.

FIG. 18 shows an object 5 to be fixed by a fixing bolt in which the flange member 10 is attached to the lower end of the head 2a.
FIG. 19 is a perspective view showing a state in which the fixing bolt is fixed to the floor F, and FIG. 19 shows the head 2a of the fixing bolt in this state.
FIG.

As shown in FIG. 19, when the maximum length of the head 2a of the fixing bolt is A and the minimum length is B, the flange member 10 according to the second embodiment has an outer diameter a and an inner diameter b of B <b <. A hollow disc-shaped flange portion 15 selected so as to satisfy A <a, and a side surface of the head 2a of the fixing bolt disposed on the flange portion 15 so as to extend inward of the flange portion 15. It is comprised by the some latching claw 16 which contact | abuts.

If the flange member 10 configured in this way is attached to the tapered portion 2t formed at the lower end of the head 2a of the fixing bolt 2, the fixed object 2 is the object to be fixed 5 by the fixing bolt 2. When being fixed to the floor F, the gap 15 is provided with a gap S in which the hook locking claw 23 of the crowning member 20 can be inserted.
And the surface of the object 5 to be fixed.

Accordingly, in the state shown in FIG. 18, the crown member 20 is attached to the head 2 a of the fixing bolt and the flange member 10.
The second embodiment can be brought into the mounting state shown in FIG. 20 by mounting the peripheral wall member 30 after covering.

The peripheral wall member 30 in the mounted state shown in FIG. 20 is the first embodiment described with reference to FIG.
Since it is in the same state as the wearing state, it cannot be easily removed. When the peripheral wall member 30 and the crown member 20 in such a mounted state are removed and the head 2a of the fixing bolt is exposed to the outside, the unlocking described above with reference to FIGS. 6 and 7 is performed. The member 60 may be used.

In the second embodiment as well, the peripheral wall member 30 may have a cap-like configuration having the top plate portion 32 as shown in FIGS.

Further, the head 2a having the taper portion 2t of the fixing bolt 2 is regarded as a fixing nut 4 having a taper portion 4t formed on the lower end surface as shown in FIG. Can be used as a security device for nuts. FIG. 22 shows a cross-sectional view of the second embodiment in which the fixing nut 4 is mounted as the fixing nut crime prevention device. In FIG. 22, 3 is
A bolt embedded and fixed in a floor (object) F for fixing the object 5 to be fixed, and 4 is a fixing nut having a tapered portion 4t. The other configuration is the same as the configuration described above with reference to FIGS.

It is a perspective view which shows the structure of Example 1 of this invention. It is a disassembled perspective view which shows the structure of Example 1 of this invention. It is a disassembled perspective view which shows the structure of Example 1 of this invention. It is sectional drawing which shows the structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of a structure of Example 1 of this invention. It is explanatory drawing of Example 2 of this invention. It is explanatory drawing of Example 2 of this invention. It is a disassembled perspective view which shows the structure of Example 2 of this invention. It is a disassembled perspective view which shows the structure of Example 2 of this invention. It is explanatory drawing of a structure of Example 2 of this invention. It is sectional drawing which shows the structure of Example 2 of this invention. It is explanatory drawing of a structure of Example 2 of this invention. It is explanatory drawing of a structure of Example 2 of this invention. It is a perspective view of the number plate with which the conventional vehicle body is mounted | worn. It is a perspective view of the number plate with which the conventional vehicle body is mounted | worn.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Number plate 2 Fixing bolt 2a Head 2t, 4t Taper part 3 Bolt 4 Fixing nut 4b Washer 5 Fixing object 10 Girder member 11,15 Girder part 12 Bottom plate part 13 Standing upper part 16 Locking claw 20 Crowning member 21 Top plate Part 22 Side wall part 23 Claw member locking claws 24, 25 Peripheral wall member locking claws 30 Peripheral wall member 31 Circular projection parts 32, 33 Projection part 60 Unlocking members 61, 62 Groove part F Floor M Car body S Space

Claims (8)

A flange that extends toward the periphery of the head of the fixing bolt when the fixing bolt is fixed to an object having a female screw portion screwed into the fixing bolt with the fixing bolt. And a hook member that can be attached to the lower end of the head of the fixing bolt in a state where a gap is formed between the flange and the surface of the first object to be fixed,
The crown member has a top plate portion and a plurality of side wall portions extending downward from the peripheral edge portion of the top plate portion, and is attached to the head of the fixing bolt to which the flange member is attached. The lower end portions of the plurality of side wall portions are formed between the surface of the fixed object and the flange portion of the flange member when the fixing bolt is attached to the head of the fixing bolt and the flange member. A crown member in which a locking claw for a collar member that can be inserted into the gap portion is formed;
A hollow cylindrical peripheral wall member that covers the head of the fixing bolt and the outer surface of the crown member that is attached to the flange member, and protrudes inward in the lower end portion of the inner peripheral wall surface of the peripheral wall member. And a peripheral wall member formed with a circular projection that presses the side wall of the crown member,
The crown member is a peripheral wall member locking claw that engages with an upper surface portion of the circular projection of the peripheral wall member, and the peripheral wall member engagement that extends downward from the peripheral edge of the top plate portion. A security device for fixing bolts, wherein a pawl is formed. The flange member includes a flange portion disposed around the head of the fixing bolt so as to extend in a peripheral direction thereof, a lower end surface of the head of the fixing bolt, and a surface of the object to be fixed. The security device for a fixing bolt according to claim 1, comprising a bottom plate portion that is held and fixed by an upper portion and an upright portion interposed between the bottom plate portion and the flange portion. The fixing bolt is a fixing bolt in which a taper portion is formed on the lower end surface of the head, and the flange member has a maximum length A and a minimum length B of the fixing bolt. A hollow disc-shaped flange having an outer diameter a and an inner diameter b satisfying the condition of B <b <A <a, and the flange is disposed so as to extend inward in the flange and The security device for a fixing bolt according to claim 1, comprising a plurality of locking claws that contact the side surface of the head. The security device for fixing bolts according to any one of claims 1 to 3, wherein a top plate portion is disposed on an upper portion of the peripheral wall member. When a fixed object through which a bolt fixed to an object can be inserted is fixed to the bolt with a fixing nut screwed to the bolt, a hook part extending toward the peripheral direction of the fixing nut is provided. And the collar member which can be attached to the lower end part of the fixed nut in a state where a gap is formed between the collar part and the surface of the fixed object,
A crown member having a top plate portion and a plurality of side wall portions extending downward from a peripheral portion of the top plate portion, the crown member being crowned on the fixing nut to which the flange member is attached, At the lower end of the plurality of side wall portions, when being attached to the fixing nut and the flange member, it can be inserted into a gap formed between the surface of the fixed object and the flange portion of the flange member. A crown member on which a locking claw for a saddle member is formed;
A hollow cylindrical peripheral wall member that covers an outer surface portion of the fixing member that is attached to the fixing nut and the flange member, and protrudes inwardly from a lower end portion of an inner peripheral wall surface of the peripheral wall member. It is composed of a peripheral wall member formed with a circular projection that presses the side wall of the crown member,
The crown member is a peripheral wall member locking claw that engages with an upper surface portion of the circular projection of the peripheral wall member, and the peripheral wall member engagement that extends downward from the peripheral edge of the top plate portion. A security device for a fixing nut, characterized in that a pawl is formed. The flange member is sandwiched and fixed by a flange portion that extends around the fixed nut in the peripheral direction, a lower end surface of the fixed nut, and a surface of the object to be fixed. The fixed nut crime prevention device according to claim 5, comprising: a portion, and an upright portion interposed between the bottom plate portion and the flange portion. The fixing nut is a fixing nut having a tapered portion formed at a lower end surface thereof, and the flange member has an outer diameter a and an inner diameter when the maximum length of the fixing nut is A and the minimum length is B. b is a hollow disc-shaped flange that satisfies the condition of B <b <A <a, and a plurality of the flanges are arranged so as to extend inward in the flange and contact the side surface of the fixing nut. The fixing nut crime prevention device according to claim 5, comprising: a locking claw. The security device for a fixing nut according to any one of claims 5 to 7, wherein a top plate portion is disposed on an upper portion of the peripheral wall member.

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