JP2014139383A - Thumb-turn cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thumb-turn cover that enables a magnetic sensor to accurately detect magnetism for detecting a locked/unlocked state of a door.SOLUTION: A thumb-turn cover 2 for preventing a thumb turn 4, which is provided in a lock of a door 1, from being illegally unlocked by a thumb-turn wrench includes a thumb-turn cover body 21, and a thumb-turn fit-in body 22 that is formed with a thumb-turn fit-in groove 22a capable of being attached to/detached from a fitting part 26 of the thumb-turn cover body 21. A magnet 24 is provided inside a swollen part 25.

Description

  The present invention relates to a thumb turn cover for preventing a thumb turn from being illegally unlocked by turning the thumb turn.

  Conventionally, many technologies related to a thumb turn cover for preventing the thumb turn provided in front of the door from being illegally unlocked by turning the thumb turn have been proposed and put into practice (see, for example, Patent Document 1). ).

  There has also been proposed a lock confirmation system in which a magnet is provided in the thumb turn and a door lock / unlock state is detected as a magnetic change by a magnetic sensor provided in the vicinity thereof (see, for example, Patent Document 2).

JP 2004-218278 A JP 2006-063613 A

  However, if a thumb turn cover such as the above-mentioned patent document 1 is attached to the thumb turn in the locking confirmation system as described above, the magnetic sensor cannot successfully magnetize, and the door is locked / unlocked. Could not be detected accurately.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a thumb turn cover that allows a magnetic sensor to accurately detect magnetism for detecting the locked / unlocked state of a door.

  In order to achieve the above object, the thumb turn cover of the present invention is a thumb turn cover for preventing the thumb turn provided in front of the door from being illegally unlocked by turning the thumb turn. A magnet is provided.

  Here, the thumb turn cover main body in which a fitting portion is formed, and a thumb turn fitting body in which a thumb turn fitting groove that can be attached to and detached from the fitting portion of the thumb turn cover main body is formed.

  Further, the fitting portion of the thumb turn cover main body may be formed between a plurality of opposing protrusions provided at intervals in the thumb turn cover main body.

  Furthermore, a bulging portion that bulges outward may be provided.

  The magnet may be provided inside the bulging portion.

  Furthermore, the said bulging part is good to be provided in the insertion side edge part to the thumb turn, or its vicinity.

  Such a thumb turn cover of the present invention is a thumb turn cover for preventing the thumb turn provided before the door from being unlocked illegally by turning the thumb turn, and a magnet is provided inside or outside the thumb turn cover. It is configured.

  With the above-described configuration, since the magnet can be arranged closer to the magnetic sensor, the magnetic sensor can accurately detect the magnetism for detecting the locked / unlocked state of the door.

  Here, when the thumb turn cover main body in which the fitting portion is formed and the thumb turn fitting body in which the thumb turn fitting groove that can be attached and detached is formed in the fitting portion of the thumb turn cover main body, a plurality of types of thumb turns are provided. Since the thumb turn fitting body in which the thumb turn fitting groove is formed and the same thumb turn cover body can be used, it can be implemented at low cost.

  In addition, when the thumb turn cover main body is formed between a plurality of opposing projections provided at intervals inside the thumb turn cover main body, the cavity can be made larger, so the material such as resin to be used Therefore, it can be implemented at a lower cost.

  Furthermore, if there is a bulging part that bulges outward, the bulging part becomes a catch, and it is easy to rotate the thumb turn together with the thumb turn cover, and just look at the position of this swelling part. It is also possible to determine whether the door is locked or unlocked.

  Also, if a magnet is provided inside the bulging part, the position where the magnet is provided can be seen immediately, so the thumb turn cover should be easily mounted so that the magnet is closer to the magnetic sensor. Can do.

  Furthermore, when the bulging part is provided on the side edge fitted to the thumb turn or in the vicinity thereof, the distance between the magnet and the magnetic sensor can be further reduced.

It is explanatory drawing which shows schematic structure of the door (locked state) provided with the thumb turn cover of an Example. (A) is a disassembled perspective view of the thumb turn cover of an Example, (b) is a perspective view which shows the assembly state of the thumb turn cover of an Example. It is explanatory drawing which shows schematic structure of the door (unlocked state) provided with the thumb turn cover of an Example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention will be described based on examples shown in the drawings.

  First, the configuration of the embodiment will be described.

  FIG. 1 shows a schematic configuration of a door 1 provided with a thumb turn cover 2 of the embodiment.

  The thumb turn cover 2 of this embodiment is mainly composed of a thumb turn cover main body 21 and a thumb turn fitting 22 as shown in FIGS. 2 (a) and 2 (b).

  Here, the overall shape of the thumb turn cover main body 21 has a substantially cylindrical shape, and a bulging portion 25 bulging further outward is provided at the fitting side edge portion of the thumb turn 4. Yes.

  Therefore, even if this bulging part 25 is included, it has a smooth shape that is difficult to hook a wire or the like.

  A magnet 24 is provided inside the bulging portion 25.

  The thumb turn cover body 21 has an opening on one side facing the door 1 when the thumb turn cover 2 is mounted on the thumb turn 4, and a plurality of protrusions 23,. .. Are provided, and a fitting portion 26 is formed between the protrusions 23, 23, 23 and the protrusions 23, 23, 23.

  Furthermore, the thumb turn insertion body 22 has a substantially U shape as a whole, and a thumb turn insertion groove 22a for fitting the thumb turn 4 is formed on the inner edge thereof.

  And this thumb turn insertion body 22 is used by fitting to the fitting portion 26 of the thumb turn cover main body 21.

  FIG. 1 shows a state in which the door 1 is in a locked state. In this state, the bulging portion 25 in which the magnet 24 is provided on the magnetic detection portion 3a of the magnetic sensor 3 installed on the door 1 faces. The thumb turn cover 2 is attached to the thumb turn 4 provided on the lock above the door knob 5.

  When the thumb turn 4 is rotated by hand and the thumb turn 4 is unlocked as shown in FIG. 3, for example, a warning is provided when the set time elapses. Notification sound or warning sound may be emitted from the speaker 3b.

  Next, functions and effects of the embodiment will be described.

  The thumb turn cover 2 of this embodiment is a thumb turn cover for preventing the thumb turn 4 provided before the door 1 from being unlocked illegally by turning the thumb turn, and a magnet 24 is provided in the thumb turn cover. It is set as the structure.

  Since the magnet 24 can be disposed closer to the magnetic sensor 3 due to the above-described configuration, the magnetic sensor 3 can accurately detect the magnetism for detecting the locked / unlocked state of the door 1.

  Here, the thumb turn cover 2 includes a thumb turn cover body 21 in which a fitting portion 26 is formed, and a thumb turn fitting body 22 in which a thumb turn fitting groove 22 a that can be attached to and detached from the fitting portion 26 of the thumb turn cover main body 21 is formed. It consists of.

  For this reason, since the thumb turn insertion body 22 in which the thumb turn insertion groove 22a according to the type of the plurality of thumb turns 4 is formed is prepared, and the same thumb turn cover body 21 can be used, it is implemented at low cost. can do.

  Further, the fitting portion 26 of the thumb turn cover main body 21 is formed between the protrusions 23, 23, 23 and the protrusions 23, 23, 23 that are provided in the thumb turn cover main body 21 with a space therebetween.

  For this reason, since a cavity part can be taken large, less materials, such as resin used, can be used, and it can implement at lower cost.

  Furthermore, a bulging portion 25 bulging outward is provided.

  For this reason, the bulging portion 25 becomes caught, and the thumb turn 4 can be easily rotated together with the thumb turn cover 2 and the door 1 can be determined to be locked / unlocked only by looking at the position of the bulging portion 25. You can also.

  A magnet 24 is provided inside the bulging portion 25.

  For this reason, since the position where the magnet 24 is provided is immediately known, the thumb turn cover 2 can be easily mounted so that the magnet 24 is in a direction close to the magnetic sensor 3.

  Furthermore, the bulging part 25 is provided in the edge part by which the thumb turn is fitted.

  For this reason, the distance between the magnet 24 and the magnetic sensor 3 can be made closer.

  As mentioned above, although the form for implementing this invention was explained in full detail based on the Example with reference to drawings, the concrete structure is not limited to this Example, and is a grade which does not deviate from the summary of this invention. Design changes are included in the present invention.

  For example, in the above-described embodiment, the magnet 24 is provided inside the thumb turn cover 2, but the present invention is not limited to this and may be provided outside.

  Moreover, in the above-mentioned Example, although the whole shape of the thumb turn cover 2 was implemented as substantially cylindrical shape, it is not limited to this, You may implement in another shape.

  That is, it is good that the wire has a smooth shape that is difficult to catch.

  Further, in the above-described embodiment, the bulging portion 25 is provided at the edge portion on the fitting side to the thumb turn 4, but is not limited to this, and may be provided in the vicinity thereof, and substantially the same operation. An effect is obtained.

  In the above-described embodiment, the bulging portion 25 is located on the lower side when the door 1 is unlocked. However, the present invention is not limited to this. For example, the bulging portion 25 is located on the upper side. Also good.

  In this way, a particularly tall adult can more easily determine the locked / unlocked state of the door 1 by looking at the bulging portion 25.

DESCRIPTION OF SYMBOLS 1 Door 2 Thumb turn cover 21 Thumb turn cover main body 22 Thumb turn insertion body 22a Thumb turn insertion groove 23 Protrusion 24 Magnet 25 Expansion part 26 Fitting part 3 Magnetic sensor 3a Magnetic detection part 3b Speaker 4 Thumb turn 5 Door knob

Claims (6)

A thumb turn cover for preventing the thumb turn provided in front of the door from being unlocked illegally by turning the thumb turn.
A thumb turn cover characterized in that a magnet is provided inside or outside thereof.   The thumb turn cover main body in which a fitting part is formed, and a thumb turn fitting body in which a thumb turn fitting groove detachably attached to the fitting part of the thumb turn cover main body is formed. The listed thumb turn cover.   The thumb turn cover according to claim 2, wherein the fitting portion of the thumb turn cover main body is formed between a plurality of opposing protrusions provided at intervals in the thumb turn cover main body.   The thumb turn cover according to any one of claims 1 to 3, further comprising a bulging portion that bulges outward.   The thumb turn cover according to claim 4, wherein the magnet is provided inside the bulging portion.   6. The thumb turn cover according to claim 4 or 5, wherein the bulging portion is provided at a fitting side edge to the thumb turn or in the vicinity thereof.