JP5623581B2 - Nut locking device - Google Patents

Description

  The present invention relates to a lock device that prevents removal of bolts and nuts by unauthorized persons.

Conventionally, there has been known a tamper-proof fitting that prevents a bolt and nut attached to a member to be tightened from being unnecessarily removed (for example, Patent Document 1). This includes a fixing ring that is screwed onto the end of the bolt, and a protective cap that covers the end of the bolt and the nut and is locked to the fixing ring. The outer diameter of the fixing ring is larger than the outer diameter of the nut. The protective cap has a hook-like portion that hides the protruding end portions of the nut and the bolt, and a locking portion that locks the hook-like portion to the fixing ring. The locking portion is composed of a plurality of folded spring pieces. The folding spring piece rises inward from the open side edge of the bowl-shaped portion, and the inner diameter of the tip portion is smaller than the outer diameter of the fixing ring. When the protective cap is put on the upper part of the fixing ring and driven, the folding spring piece engages with the nut side of the fixing ring and is prevented from coming off. This metal fitting can also be applied to prevent the to-be-tightened member from being stolen.
On the other hand, Patent Document 2 describes a fixing device that can fix a plurality of solar cell panels at once and prevent the solar cell panel from being stolen by locking. The fixing device includes a plurality of engaged members respectively attached to the back surfaces of the plurality of solar cell panels, a first frame that supports the plurality of solar cell panels, and a relative to the first frame. And a second frame for fixing together the plurality of engaged members respectively attached to the back surfaces of the plurality of solar cell panels, and the second frame relative to the first frame And a handle for moving the device. The handle is configured such that the second frame can be locked by a lock at a position where the plurality of solar battery panels are fixed.

JP 11-311235 JP2013-4869

The nut tamper-proof bracket described in Patent Document 1 cannot be used in an installation place where there is no work space for mounting a protective cap on the end side of the bolt, and can be removed by an authorized person. There is a problem that it becomes difficult.
The lockable solar panel fixing device described in Patent Document 2 is a large-scale device composed of a large number of members having a special configuration, and has a problem that it lacks versatility.
Therefore, the present invention prevents the unauthorized person from removing the bolts and nuts, but the removal operation by the authorized person is easy and can be installed in a place where there is not enough work space on the end side of the bolt. An object of the present invention is to provide a nut locking device.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the nut locking device 1 of the present invention locks a nut 104 screwed into a bolt 103 that penetrates the vicinity of the periphery of the fastened members 101 and 102 in the thickness direction so that the nut 104 cannot be rotated. The locking device is mounted on the peripheral edge of the fastened members 101 and 102, the main body 2 fitted into the peripheral edge of the fastened members 101 and 102, the opening / closing member 3 pivotally supported by the main body 2, and the main body 2 and a lock unit 4 to be incorporated in the vehicle. The main body 2 includes a head fitting piece 6 to be fitted to the bolt head 103a, a nut holding piece 7 along one side surface of the nut, and both of these pieces when the fastened members 101 and 102 are attached to the peripheral portions. 6 and 7, and a recessed groove portion 10 that can receive the peripheral edge portions of the fastened members 101 and 102. The opening / closing member 3 is pivotally supported on the main body 2 by a pivot 15 that is parallel to the bolt 103 when mounted on the fastened members 101 and 102, and can hold a nut 104 between the holding piece 7 of the main body 2. It has a corresponding holding piece 12 and is rotatable between a closed position for holding the nut 104 between the holding pieces 7 and 12 and an open position for releasing the nut 104. The lock unit 4 restrains the opening / closing member 3 to the closed position in the locked state, and releases the opening / closing member 3 in the unlocked state.

  The nut locking device of the present invention prevents the removal of bolts and nuts by unauthorized persons, but the removal operation by authorized persons is easy and can be installed in places where there is no large working space on the end side of the bolts It is.

It is an exploded perspective view of the locking device of the nut concerning the present invention. It is a disassembled perspective view from the opposite direction of the locking device of the nut of FIG. It is a front view of the mounting state of the locking device of the nut of FIG. It is a top view of the mounting state of the locking device of the nut of FIG. It is a side view of the mounting state of the locking device of the nut of FIG. It is another side view of the mounting state of the locking device of the nut of FIG. It is VII-VII sectional drawing in FIG.

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a first fastened member 101 and a second fastened member 102 indicated by phantom lines are fastened and fixed by bolts 103 penetrating the vicinity of the peripheral edge in the thickness direction and nuts 104 screwed to the bolts 103. Is done.
As shown well in FIGS. 4 to 7, the locking device 1 is used for the purpose of preventing removal of the bolt 103 and the nut 104 by an unauthorized person and preventing the to-be-fastened members 101 and 102 from being stolen. 103 and the nut 104 are attached to the periphery of the fastened members 101 and 102 so as to cover them.

The lock device 1 includes a main body 2, an opening / closing member 3 pivotally supported by the main body 2, and a lock unit 4 that restrains and releases the main body 2 and the opening / closing member 3 by operating a key 5.
The main body 2 includes a head fitting piece 6 to be fitted to the bolt head 103a, a nut holding piece 7 along one side surface of the nut 104, and both pieces when the fastened members 101 and 102 are attached to the peripheral portions. The mechanism accommodating part 8 which connects 6 and 7 base end sides and the bracket part 9 extended to the side from the mechanism accommodating part 8 are comprised. A concave groove portion 10 is formed between the head fitting piece 6 and the nut holding piece 7. The peripheral edge portions of the members to be fastened 101 and 102 can be received in the concave groove portion 10.

  The head fitting piece 6 extends along the opposite side surfaces of the bolt head 103a when mounted, and a pair of forks 6a that make it impossible to engage the work tool with the head 103a, and both forks A receiving recess 6b formed between the portions 6a.

  The bracket portion 9 includes a pair of bearing pieces 9a that face each other in the axial direction of the bolt 103 when mounted.

  The opening / closing member 3 includes a bearing tube portion 11 that fits into the bracket portion 9 of the main body 2 and a holding piece 12 that extends therefrom, and is pivoted by a pivot 15 that penetrates the bracket portion 9 and the bearing tube portion 11. Be supported. The pivot 15 is arranged so as to be parallel to the bolt 103 when mounted on the fastened members 101 and 102. The holding piece 12 faces the holding piece 7 so that the nut 104 can be held between the holding piece 7 of the main body. The opening / closing member 3 is rotatable about a pivot 15 between a closed position where the nut 104 is held between the holding pieces 7, 12 and an open position where the nut 104 is released. When the opening / closing member 3 is in the closed position, the holding pieces 7 and 12 surround the outer periphery of the nut 104 so that the work tool cannot be engaged with the nut 104.

  The lock unit 4 is incorporated in the mechanism accommodating portion 8 of the main body 2, restrains the opening / closing member 3 to the closed position in the locked state, and releases the opening / closing member 3 in the unlocked state.

  The lock unit 4 includes a cylinder lock 13 and a dead bolt 14 that is interlocked with the rotation of the rotor 13 a of the cylinder lock 13. The dead bolt 14 is incorporated in a housing space 8a formed in the main body 2 so as to be movable between a locked position and a non-locked position, and a tip portion projects from the housing space 8a in the locked position, and the housing space in the unlocked position. Sink into 8a.

  The bearing tube 11 of the opening / closing member 3 is provided with a locking recess 11a that matches the opening of the dead bolt housing space 8a of the main body 2 in the closed position. When the opening / closing member 3 is in the closed position, the tip of the dead bolt 14 in the locked position engages with the locking recess 11a, thereby restraining the opening / closing member 3 in the closed position.

  For example, when the present invention is applied to the fixing bolt 103 and the nut 104 of the solar cell module, one fastened member 101 constitutes an inward flange of the frame of the solar cell module, and the other fastened member 102 constitutes a frame. It becomes the flange of the channel steel material. The locking device 1 is attached to the bolt 103 and the nut 104 in order to prevent the unauthorized person from removing the bolt 103 and the nut 104 and prevent the solar cell module from being stolen.

  When the lock device 1 is mounted, the opening / closing member 3 is placed in the open position as shown in FIG. 4B, the cylinder lock 13 is unlocked, and the dead bolt 14 is pulled into the main body 2. Yes. The locking device 1 is fitted in the concave groove 10 so as to receive the edges of the fastened members 101, 102, the nut 104 is arranged between the holding pieces 7, 12, and the fork portion 6 a of the head fitting piece 6 is placed. A bolt head 103a is arranged. In this state, the opening / closing member 3 is rotated to the closed position, the nut 104 is held between the holding pieces 7 and 12, the dead bolt 14 is pushed out to the locked position by the operation of the key 5, and the front end portion thereof is opened and closed. The locking recess 11a of the member 3 is engaged. The opening / closing member 3 is locked at the closed position, and the nut 104 cannot be loosened unless the key 5 is unlocked. Since the bolt head 103a is also surrounded by the head fitting piece 6, it cannot be rotated. The key 5 is removed at the locking position.

  The nut locking device 1 effectively prevents removal of the bolt 103 and the nut 104 by an unauthorized person, but can be easily removed by a key 5 by an authorized person. Can be installed on existing bolts and nuts. Since it can be mounted on the nut 104 from the direction orthogonal to the axis, it can be mounted even in a place where there is not enough work space on the end side of the bolt 103.

DESCRIPTION OF SYMBOLS 1 Locking device 2 Main body 3 Opening / closing member 4 Lock unit 5 Key 6 Head fitting piece 6a Fork part 7 Holding piece 8 Mechanism accommodating part 8a Accommodating space 9 Bracket 9a Bearing piece 10 Recessed groove part 11 Bearing cylinder part 11a Locking recessed part 12 Holding piece 13 Cylinder lock 13a Rotor 14 Dead bolt 101 Fastened member 102 Fastened member 103 Bolt 103a Head 104 Nut

Claims (2)

A locking device that is attached to the periphery of a member to be fastened to lock a nut screwed into a bolt that penetrates the vicinity of the periphery of the member to be fastened in the thickness direction so that the nut cannot be rotated.
A head fitting piece fitted to the head of the bolt, a nut holding piece along one side of the nut, and a cover formed between the two pieces when the fastening member is attached to the peripheral edge. A main body having a recessed groove portion capable of receiving the peripheral edge portion of the fastening member;
And a corresponding holding piece that is supported by the main body by a pivot that is parallel to the bolt when mounted on the fastened member, and that can hold the nut between the holding piece of the main body, An opening / closing member that is rotatable between a closed position for holding the nut between the holding pieces and an open position for releasing the nut;
A lock unit incorporated in the main body, restraining the opening / closing member in a closed position in a locked state, and releasing the opening / closing member in an unlocked state;
The head fitting piece of the main body includes a pair of fork portions that extend along both opposing side surfaces of the bolt head at the time of mounting so that the work tool cannot be engaged with the head.
The nut holding piece of the main body and the corresponding holding piece of the opening / closing member surround the outer periphery of the nut and make it impossible to engage the work tool with the nut when the opening / closing member is in the closed position. A nut locking device characterized by being configured as described above. The lock unit is movably incorporated between a cylinder lock and a locked position where the tip portion protrudes from the main body in conjunction with rotation of the rotor of the cylinder lock and a non-lock position where the tip portion sinks into the main body. Equipped with dead bolts,
The said opening / closing member has a bearing tube portion through which the pivot shaft is inserted, and the bearing tube portion includes a locking recess that engages with a tip end portion of the dead bolt at a lock position. The nut locking device according to 1.

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