JP3094906U - Door locking device - Google Patents

Abstract

(57) [Problem] To use a repulsive force of a pair of permanent magnets without using a return spring and always automatically return a door lock bar to a lock position side, thereby hooking the lock bar. The removal operation should be easy and reliable. SOLUTION: A pair of permanent magnets 2 and 3 are accommodated in a case 1 which is a non-magnetic material at an interval, and both permanent magnets 2 and 3 are provided.
A lock rod 4 whose one end 4a is freely hooked is inserted through a lock opening provided on an edge surface of the door mounting portion, and a repulsive force is induced between the permanent magnets 2 and 3. Thus, the lock rod 4 can be automatically returned to the lock position. Note that one end 4 a of the lock bar 4 protrudes from the mounting plate 5 also serving as a lid of the case 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a lock device for air-tightening, which is used for doors in homes and offices in buildings. It

[0002]

[Problems to be Solved by Conventional Techniques and Inventions]

  Most of the lock devices for air-tightening described above are conventionally provided on the door side. Place the lock bar under the bias of the return spring, and provide the protruding part of the lock bar on the edge of the door mounting part. It was a shape that could be locked on the lock mouth. This conventional one When opening the door, turn the door knob to retract the lock bar to the door side, It is necessary to remove the latch from the mouth, and if the return spring is damaged, the lock will There was a problem that I could not do it.

[0003]   The present invention solves such a problem, and its purpose is to rotate the doorknob. The lock bar can be removed even if it is worn, and the repulsive force of the pair of permanent magnets can be removed. You can always use the to automatically return the lock rod to the lock position side. In order to prevent the lock function from being impaired semi-permanently, and to attach it to the door It is an object of the present invention to provide an improved door locking device that is convenient to use.

[0004]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, the door locking device, which is a feature of the present invention, comprises a pair of door locking devices. The permanent magnets are housed at intervals in a non-magnetic case, and the permanent magnets are (A) A lock whose one end can be freely locked to the lock port provided on the edge of the mounting part A rod is inserted, and a repulsive force is induced between the permanent magnets so that the lock It is configured so that the lever can be automatically returned to the lock position.

[0005]   In the above configuration, specifically, the pair of permanent magnets are provided with the same poles facing each other. The lock bar protrudes from the mounting plate of the case that doubles as the lid and is located on the mounting plate side. One of the permanent magnets is capable of reciprocating together with the lock rod, and is attached to the bottom of the case. The other permanent magnet located is apparently immobile in the case and is locked. One end of the rod is formed in a substantially spherical shape.

[0006]

[Action]

  When the door is closed, the repulsive action of both permanent magnets moves the lock bar to the lock mouth side. It has returned automatically and is locked. Also, one end of the lock bar is almost spherical. Since it is formed in a planar shape, the lock bar that is locked on the lock mouth side is the door The lock opening is controlled by the external force in the door opening direction by simply pulling the knob. It moves toward the door while contacting the edge, and one end of it slides from the lock opening. The door can be easily opened and the door can be opened easily. Conversely, when closing the door The hook rod automatically returns to the locked position by performing the same operation.

[0007]

[Embodiment of device]

  Embodiments of the present invention will be described below with reference to the drawings. 1 is plastic It is a case that is a non-magnetic material such as aluminum and With the outer peripheral surface close to the inner wall of Case 1, a pair of permanent magnets with the same poles facing each other Permanent magnets 2 and 3 are accommodated at intervals, and the permanent magnets 2 and 3 have insertion holes. The lock rod 4 is inserted through 2a and 3a. One end 4a of the lock bar 4 is a lid It also protrudes from the mounting plate 5 of the case that also serves as the one end of the door, and the one end 4a thereof is the edge surface 11 of the door mounting part It can be locked on the lock port 12 provided on the.

[0008]   One permanent magnet 2 located on the mounting plate 5 side reciprocates together with the lock rod 4, The other permanent magnet 3 located on the bottom 1a side of the case 1 is apparently not It is in motion. In the illustrated case, the permanent magnet 3 repels the other permanent magnets 2. By the action, it is pushed toward the bottom 1a side of the case 1 and comes into contact with the bottom 1a. However, this may be fixed to the inner surface of the case 1.

[0009]   The one end portion 4a of the lock bar 4 has a little resistance to be engaged with and disengaged from the lock port 12. It is formed into a substantially spherical shape so that it can be free from drag. Also, one permanent magnet 2 , The lock is made by the joint protrusion 6 which is positioned on the mounting plate 5 side and fixed to the lock bar 4. Although the shape that can be moved together with the rod 4 is shown, this can be replaced by another shape and Of course, it can be applied.

[0010]   In the figure, 1b is a mounting flange continuously provided on the edge of the case 1, and 1c is the bottom of the case 1. Window holes provided in the portion 1a, 5a are openings provided in the mounting plate 5, and 7 is permanent except for the facing surface portion. Reinforcing metal plates attached to the outer peripheral surfaces of the magnets 2 and 3, 8 is a set screw, 9 is a door, and 10 is a user. The hole 10a of the door 9 for mounting the knitted lock device is provided at the bottom of the hole 10. Escape (recess), 13 is a contact plate that abuts on the lock opening 12, 13a is a contact plate 13 is a window hole and 13b is a taper portion with which the lock rod formed in the window hole 13a abuts. It If the bottom portion 1a of the case 1 is formed into a double bottom or the like, the escape 10a is provided with the window hole 1 described above. It can also be used as c.

[0011]

[Effect of device]

  The present invention uses a pair of permanent magnets, unlike a conventional locking device using a return spring. Since it is designed to utilize the repulsive force, the structure is simplified and there is no risk of damage, There is an advantage that the operation is stable and the lock function is not impaired semipermanently. . In addition, there is a convenience in use that you can open it without turning the door knob, The whole locking device is unitized, and it has the advantage that it can be easily and securely attached to the door. is there.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 showing a state of being attached to a door.

FIG. 3 is a partial front sectional view of a door mounting portion.

[Explanation of symbols]

1 is the case 1a is the bottom 1b is a brim for mounting 2 and 3 are permanent magnets 2a and 3a are insertion holes 4 is a lock stick 4a is one end 5 is a mounting plate 6 is a joint protrusion 8 setscrew 11 is the edge of the door mounting part 12 is a lock mouth

Claims (2)

[Scope of utility model registration request] 1. A pair of permanent magnets are housed at intervals in a case which is a non-magnetic body, and one end of each of the permanent magnets can be locked to a lock port provided on an edge surface of a door mounting portion. The lock bar is inserted through the door, and the lock bar is configured to automatically return to the lock position by inducing a repulsive force between the permanent magnets. Lock device. 2. A pair of permanent magnets are provided with the same poles facing each other, one end of the lock rod projects from a mounting plate of a case that also serves as a lid, and one permanent magnet located on the mounting plate side is locked. The rod is capable of reciprocating movement, and the other permanent magnet located on the bottom side of the case is apparently immobile in the case, and one end of the lock rod is formed into a substantially spherical shape. The door lock device according to claim 1, wherein: