JP4596529B2 - Lock / unlock display device - Google Patents

Description

  The present invention relates to a locking / unlocking display device that can easily determine from the outside whether the lock is locked or unlocked, and in particular, the cylinder lock is completely embedded in a holding member such as a cylinder cylinder, The present invention relates to a locking / unlocking display device capable of displaying locking / unlocking even in a lock where the rotation of an inner cylinder cannot be confirmed from the outside.

  A lock / unlock display device is a device that displays whether a cylinder lock attached to a door, a drawer of a desk, or another lock position is in a locked state, or in an unlocked state. As shown, normally, the locked / unlocked state is displayed by utilizing the relative angular position change of the movable inner cylinder with respect to the fixed outer cylinder.

In this case, since the key guide of the inner cylinder is exposed to the external space in a normal lock, the structure of the lock / unlock display device is relatively simple, and various lock / unlock display devices have been proposed.
JP 09-025751 A JP-A-11-193655 Japanese Patent Laid-Open No. 11-200678 Japanese Patent Application No. 2004-338775

  By the way, depending on the type of lock, as described in Patent Document 3, for example, the cylinder lock may be completely embedded in a holding member such as a cylinder cylinder.

  The cylinder lock described in Patent Document 3 is used for a so-called crime prevention type thumb turn. Usually, a dharma operation shaft having a cross-shaped cross section directly connected to the thumb turn is a cylinder lock embedded in a door. Connect the inner cylinder to the keyhole of this cylinder lock, and use the thumb key to pick up the thumb turn, and remove the key when you do not need it, and insert the hand from the outside to operate the thumb turn. It is intended to prevent unauthorized unlocking.

  The cylinder lock used for such a so-called crime prevention type thumb turn is usually or, as is apparent from the drawings of Patent Document 3, the end face on the indoor side of the cylinder lock is covered with a key lock holding mechanism. The device cannot be adopted that way.

  The present applicant has previously proposed a locking / unlocking display device capable of displaying the locking / unlocking state of a cylinder lock covered with a cylinder tube or a decorative cover using the above-mentioned Patent Document 4.

  This locking / unlocking display device is designed to display the locking / unlocking state of the cylinder lock by the appearance of the bar-shaped indicator, and although it has the advantage of being able to detect the locking / unlocking state even when there is no night illumination, it has a little structure Is complicated and there is still room for improvement.

  Therefore, the present invention provides a lock / unlock display device that can display the lock / unlock state of the cylinder lock even when the cylinder lock is buried in a holding member such as a cylinder tube or a decorative cover and is not exposed to the external space. The purpose is that.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a cylinder lock is mounted on the inside and outside of the door so as to sandwich a lock box embedded in the door, and the inside and outside cylinder locks are installed. In the crime prevention type thumb turn that connects the cylinder to the locking / unlocking operation member in the lock box, and allows the joint key of the cylinder lock on the indoor side to be inserted and removed as the thumb turn knob, it is a block body fixed to the inner surface of the door. A base that also serves as an outer cylinder that houses the cylinder lock, a thumb turn core that is coaxially connected to the inner cylinder of the cylinder lock on the indoor side, and a cover that is attached to the base so as to cover the base in a perforated cup shape The arm that extends in the radial direction of the cylinder lock is integrally formed on the thumb turn core, and any of the connecting bar and the connecting cylinder that is slidably fitted to the connecting bar is provided on the indoor side of the tip of the arm. One side is planted, and the projection shape on the door surface is formed with an arc-shaped escape groove on the base so as not to interfere with these connecting bars or connecting cylinders. A plurality of support pieces made of an elastic material are formed to form an outward locking claw, and the display ring circumscribing these support pieces is locked by the locking claw so as not to come off from the support piece. The other of the connecting bar and the connecting cylinder is planted on the outer surface of the display ring, and the connecting bar and the connecting cylinder are fitted in the escape groove, A display window is formed on the bottom surface of the cover facing the interior side surface of the display ring, and the display ring is viewed from the display window when locked and unlocked. Provided a difference, hue difference, reflectance difference, etc. And features.

  In the lock / unlock display device according to the first aspect of the present invention configured as described above, when the thumb turn is operated from the indoor side, the rotation of the thumb turn core integrated with the knob is performed by fitting the connecting cylinder and the connecting bar. Therefore, if a hue difference is provided in the display ring portion that is viewed from the display window of the cover, even if the key is removed from the cylinder lock by visually recognizing the color difference The desired effect of being able to distinguish between locking and unlocking is achieved.

  In addition, since the operation of covering the base with the cover and the operation of fitting the connecting bar and the connecting cylinder can be performed in one operation, various effects such as easy assembly can be obtained.

  Since the display ring is coaxially and pivotably provided on the inner surface of the cover, the thumb turn core provided on the opposite side of the display ring with respect to the base is integrally connected with the arm, connecting bar and connecting cylinder avoiding the cylinder lock. Even if the inner cylinder of the cylinder lock was completely covered with the base or the like, the movement of the inner cylinder could be shown outside the cover.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a door, and inner and outer cylinder locks 4, 5 are mounted so as to sandwich a locking / unlocking operation member 3 such as a so-called dharma of a lock box 2 embedded in the door 1.

  The inner cylinders of the inner and outer cylinder locks 4 and 5 are connected to the dharma 3 directly or indirectly via a clutch. Usually, the inner cylinder of the outer cylinder lock 5 is connected to the dharma 3 via a clutch.

  Then, from outside, a key (not shown) is inserted into the key hole of the outer cylinder lock and rotated in a predetermined direction, so that the key 6 is inserted into the key hole of the inner cylinder lock 4 from the indoor side in the predetermined direction. By rotating, the Dharma 3 can be rotated and locked / unlocked.

  The lock having the so-called crime prevention type thumb turn having the above-described configuration can prevent unauthorized unlocking such as turning the thumb turn by operating the thumb turn if the indoor key 6 is removed.

  In addition, since the aspect of connection with the inner cylinder dharma of the inner and outer cylinder locks is not the gist of the present invention, further detailed description is omitted.

  By the way, since the common key knob 7 on the indoor side is flat, the projection on the door surface of the knob 7 is vertical or horizontal so that the unlocked state can be known, and the above projection is horizontal in the crime prevention thumb turn relating to the manufacture of the applicant. In this case, it is defined as locking.

  However, the locked / unlocked state cannot be known when the key 6 is removed from the inner cylinder lock because it is necessary. An object of the present invention is to provide a locking / unlocking display device that can distinguish between locking and unlocking even when the key 6 is removed.

  As shown in FIG. 1, the inner cylinder lock 4 according to the present invention is incorporated in a block lock base 8 that also serves as an outer cylinder of the cylinder lock.

  As shown in FIGS. 2 to 4, the base 8 is a block body having a stepped cylindrical shape, and houses a small-diameter circular hole and a tumbler arm of an inner cylinder lock along its central axis. A tumbler storage hole having a cross-shaped cross section is continuously provided.

  A thumb turn core 11 is rotatably housed in an outer recessed portion 9 (see FIGS. 3 and 4) formed on the outdoor side surface of the base 8.

  The thumb turn core 11 is a cup-shaped member having a generally cup shape. As shown in FIG. 5, the thumb turn core 11 has a cross-shaped engagement with the inner cylinder of the inner cylinder lock 4. A joint hole 12 is formed.

  The thumb turn core 11 is integrally formed with an arm 13 extending in the radial direction of the inner cylinder lock, and a connecting bar 14 (see FIG. 1) is implanted on the indoor side at the tip of the arm 13. ing.

  On the other hand, in order to avoid interference with the connecting bar and a connecting cylinder 15 (to be described later) fitted to the connecting bar, as shown in FIGS. Is formed.

  On the other hand, the security type thumb turn according to the present invention is provided with a cover 17 made of an elastic material such as plastic so as to cover the base 8 as shown in FIG.

  Then, as shown in FIGS. 6 and 7, a plurality of coaxial short cylinders are formed along the generatrix (see the illustrated embodiment) so as to surround the opening in the vicinity of the opening edge inside the bottom surface of the cover. In this case, the support pieces 18 and 18 having a shape divided into six pieces are integrally formed.

  As described above, in this embodiment, since the cover 17 is made of an elastic material, the support piece is also a flexible body having elasticity.

  As shown in FIG. 8, an outward locking claw 19 is integrally formed at the tip of each support piece 18.

  As shown in FIG. 1, a display ring 21 (see FIG. 1) circumscribing the support pieces 18 and 18 is rotatably supported and guided on the outer sides of the support pieces 18 and 18. The support pieces 18 and 18 are locked so as not to come off.

  Incidentally, in order to attach the display ring 21 to the support pieces 18, 18, it is only necessary to press the former against the substantially cylindrical opening end formed by the latter.

  In this way, the support pieces 18 and 18 are elastically deformed inward by the wedge action generated between the inclined portion and the opening edge of the display ring 21 on the outer side of the locking claw 19, and the display ring 21 is locked to the locking claw After passing through 19 and 19, the support piece returns to the state shown in FIG.

  Further, as shown in FIGS. 1 and 10, a connecting cylinder 15 that fits with the connecting bar 14 is planted at a predetermined angular position on the indoor side surface of the display ring.

  Furthermore, as shown in FIGS. 6 and 9, for example, a circular display window 22 is opened on the bottom surface of the cover 17 that is in sliding contact with the indoor surface of the display ring 21.

  When locking or unlocking, the display ring viewed from this display window is provided with a hue difference (color difference), light / dark difference or reflectance difference, etc. It is possible to identify locking or unlocking based on the difference in color of the part viewed from.

  In the present invention, the mounting of the cover 17 to the base 8 and the fitting of the connecting bar 14 and the connecting cylinder 15, that is, the connection of the thumb turn core 11 and the display ring 21 can be performed in one operation. .

  That is, as shown in FIGS. 7 and 9, engaging claws 23, 23 projecting inward are formed at symmetrical positions with respect to the central axis of the inner peripheral surface of the opening edge of the cover 17.

  Correspondingly, as shown in FIGS. 2 to 4, a pair of through grooves 24, 24 along the generatrix are provided at symmetrical angular positions with respect to the central axis of the outer peripheral portion of the base 8. Step portions 25 are formed in the central portion of the surface so as to surround most of them.

  Since the distance between the pair of through grooves 24, 24 is set smaller than the distance between the engaging claws 23, 23 of the cover, the angle is shown in FIG. After the cover 17 at the position is brought close and the engaging claws 23 and 23 are passed through the grooves 24 and 24, the display window 22 at the 9 o'clock angular position is converted to the 12 o'clock angular position in terms of the clock face. Turn clockwise.

  Then, since the distance from the opening edge of the cover 17 of the engaging claw 23 is set appropriately, when the engaging claw 23 engages with the step portion 25 of the base, the opening edge of the cover 17 is also this. Perfectly joined to the opening edge of the cup-shaped lower cover 26 (see FIG. 1).

  Since the relative angular interval between the cover 17 and the display ring 21 can be freely set, when the cover 17 is brought close to the base 8, the angular positions of the connecting cylinder 15 and the connecting bar on the thumb turn core side are made the same. Then, the covering of the base 8 by the cover 17 and the connection bar 14 and the connection cylinder 15 are automatically fitted.

Sectional drawing of the lock | rock which mounted | wore with the locking / unlocking display apparatus by one Example of this invention. The front view which looked at the base | substrate from the indoor side. Sectional drawing of a base | substrate. The rear view of a base. The front view of a thumb turn core. The rear view of a cover. Sectional drawing by the VII-VII line of FIG. The expanded sectional view of a support piece. Sectional drawing by the IX-IX line of FIG. The rear view of a display ring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Lock box 3 Dharma 4 Inner cylinder lock 5 Outer cylinder lock 6 Joint key 7 Knob 8 Base 8 Outer recessed part 11 Thumb turn core 12 Engagement hole 13 Arm 14 Connection bar 15 Connection cylinder 16 Escape groove 17 Cover 18 Support piece 19 Engagement Claw 21 Display ring 22 Display window 23 Engaging claw 24 Through groove 25 Step part 26 Lower cover

Claims (1)

  Cylinder locks are attached to the inside and outside of the door so that the lock box embedded in the door is sandwiched, and the inner and outer cylinder lock cylinders are connected to the locking and unlocking operation members in the lock box, and the indoor side In the crime prevention type thumb turn that can be inserted / removed as a thumb turn knob, the block that is fixed to the inner surface of the door, the base that also serves as the outer cylinder that houses the indoor cylinder lock, and the indoor cylinder A thumb turn core that is coaxially connected to the inner cylinder of the lock, and a cover that is attached to the thumb turn core so as to cover the base, and an arm that extends in the radial direction of the cylinder lock is attached to the thumb turn core. The connecting bar and any one of the connecting cylinders that are slidably fitted to the connecting bar are planted on the indoor side at the tip of the arm and interfere with the connecting bar or the connecting cylinder. As shown, the projection shape on the door surface is formed with an arc-shaped relief groove as a base, and on the other hand, an outwardly engaging claw is formed near the opening edge inside the bottom surface of the cover, and is made of an elastic material. A plurality of support pieces are formed, and the display ring circumscribing these support pieces is locked by the locking claws so as not to be detached from the support pieces, and the support rings are rotatably guided around the display pieces. The other of the connecting bar and the connecting tube is planted on the outdoor surface of the door, and the connecting bar and the connecting tube are fitted in the escape groove to connect the thumb-turn core and the display ring to each other. A display window is formed on the bottom surface of the cover facing the indoor side surface, and a difference in brightness, hue, or reflectance is provided in the portion of the display ring that is viewed from the display window when locked and unlocked. The locking / unlocking display apparatus characterized by the above-mentioned.

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