JP5259483B2 - Card type lock device - Google Patents

Description

  The present invention relates to a card-type lock device that can prevent locking while a door is open even if the lock is enabled by inserting a card key.

  Conventionally, for example, as disclosed in Patent Document 1, there is a card-type lock device that can reliably prevent erroneous locking due to a key rotation operation when the door is open. That is, by fixing a casing having a lock mechanism on the back surface of the door and providing a card key and an entrance of a latch on one side, and inserting the card key from the entrance, the latch provided in the lock mechanism The first stopper is disengaged, and the latch is rotated and inserted into the locking hole of the locker body by a key rotation operation, whereby locking is completed. The casing is provided with a second stopper that is spring-biased so that the latch is locked when the door is open, and the lock is released from the locker body when the door is closed. Yes.

  Specifically, when the door is in the open state, the card key is inserted from the lateral direction of the casing, so that the upper edge of the rear end of the card key hits the locking piece at the rear end of the first stopper. Is retracted along the slide groove against the biasing force of the spring. At the same time, since the pin stopper at the tip is also retracted, the engagement state of the latch with the engagement pin is released. Therefore, the latch can be locked by turning the key inserted into the lock hole of the cylinder lock. However, since the stopper portion of the second stopper locks the latch, the door is opened. Then, even if the first stopper is removed, it cannot be locked by key operation.

  On the other hand, when the door is closed, the distal end portion of the second stopper abuts against the end face of the rocker body and is pushed, so that it rotates from the inside to the outside of the casing against the urging force of the coil spring. That is, the front end portion of the second stopper is held between the door and the locker body, and maintains the closed state of the door. In this way, the distal end portion of the second stopper rotates to the door side with the support shaft spanned between the shaft support pieces of the support plate as a fulcrum, so that the latched state by the stopper portion with respect to the latch is released. Therefore, since the latch of the cylinder lock is also released from the second stopper following the first stopper, the latch is rotated by the key rotation operation together with the door closing and inserted into the locking hole of the locker body, Is to be completed.

  Further, as disclosed in Patent Document 2, there is a lock device that can prevent a mistaken operation and can easily and quickly close and lock the door. That is, as shown in FIGS. 11 to 13, the lock device includes an attachment case in which an outer case is fitted and fixed to an attachment hole of a door, and an inner case that is fitted in the outer case and fixes a lock body. A locking / unlocking latch fixed to the rear end of the rotary shaft of the lock body is provided. Then, an engagement plate is arranged slidably on the flange at the rear end of the inner case and urged toward the outer peripheral surface of the latch by a spring, and the engagement piece is placed on the mounting case with the rear end at the opening. And a locking surface, and a concave groove having an insertion port on the side wall is formed in the front-rear direction. The concave groove has a rear end in an arc surface, a side wall that can be engaged with and disengaged from an engagement plate, and the side wall A door open / close detection latch provided with an insertion concave portion of an engagement plate long in the front-rear direction is urged rearward by a compression spring and is slidably fitted in the front-rear direction.

JP 2003-206653 A JP 2003-314111 A

  However, in the case of Patent Document 1 in the related art, the card key is inserted from the side of the casing (the side where the latch is located) and the card key is arranged on the back side of the lock mechanism. The card key space of the locksmith device is reduced. In addition, the distal end portion of the second stopper is narrowed because the latched state by the stopper portion with respect to the latch is released by rotating to the door side with the support shaft spanned between the shaft support pieces of the support plate as a fulcrum. There is a problem that the arrangement structure of the second stopper in the casing is complicated and the operability of inserting the card key is lowered.

  Moreover, in patent document 2, since the door open / close detection latch is pressed by manual operation, the operability is inferior.

  Accordingly, the present invention has been devised in view of the conventional circumstances as described above, and further improves the card key insertion operability by expanding the card key space of the lock device. It is another object of the present invention to provide a card type lock device that can prevent erroneous lock before a door is closed by a locker user with a simple configuration.

In order to solve the above-described problems, the present invention includes a front frame having a rectangular window portion at a substantially center, and a back casing disposed on the back side of the front frame, and the back casing. Includes a card key insertion portion for inserting a card key from above, a latch of a cylinder lock disposed adjacent to the card key insertion portion, and a latch restricting means disposed on the lower side of the latch. An engaging plate which is slidable in the vertical direction so as to be engaged with the engaging recesses for unlocking and locking formed on the latch base through the elastic force of the leaf spring, and the card key inserting portion On the other hand, when the card key is not inserted, the downward movement of the engagement plate is restricted, while when the card key is inserted, the restriction of the downward movement of the engagement plate is released. Pressing with And a laterally slidable stopper that can be slid in the lateral direction by releasing the pressure, and locking the lower end of the engagement plate by the outward projecting movement to prevent the latch from rotating, and by retracting the inward direction And a door opening / closing detection latch that releases the locking of the lower end portion of the engagement plate and allows the latch to rotate .

  A card key stopper that is arranged near the upper card key insertion part, has a card insertion groove in the center and can be swung horizontally, and is pressed by a latch that rises in the unlocking direction. The card insertion slot and the card insertion hole in the back casing match to make the card key insertable / removable, and the card key stopper is released by the latch rotated in the locking direction so that the card is inserted. The groove is displaced from the card insertion hole to close the card key insertion portion and prevent insertion and removal of the card key.

  According to the present invention, it is possible to further improve the card key insertion operability by enlarging the card key space of the lock lock device, and with a simple configuration, an erroneous lock before the locker user closes the door. It is possible to provide a card type lock device that can prevent the above.

  That is, a card key insertion portion that has a front frame having a rectangular window portion in the approximate center and a back casing disposed on the back side of the front frame, and inserts a card key from above into the back casing. And a latch for the cylinder lock disposed adjacent to the card key insertion portion and a latch restricting means disposed on the lower side of the latch, so that the card key space of the lock device can be expanded, and the card key The insertion operability can be further improved.

The latch restricting means is an engagement plate that is slidable in the vertical direction so as to be engaged with two engagement recesses formed at the latch base portion for unlocking and locking using the elastic force of the leaf spring. When the card key is not inserted into the card key insertion portion, the card key is inserted so that the downward movement of the engagement plate is restricted while the restriction of the downward movement of the engagement plate is released when the card key is inserted. A lateral slide type stopper that can be slid in the horizontal direction by pressing and releasing the card key with respect to the part, and the lower end of the engagement plate by the outward projecting movement to prevent the latch from rotating And a door open / close detection latch that unlocks the lower end of the engagement plate by retreating inward and allows the latch to rotate, so that the engagement plate, lateral slide stopper, door open / close Detection rack It is possible to prevent an erroneous locking of the front closure of the door by the locker user with three simple structure of.

  A card key stopper that is arranged near the upper card key insertion part, has a card insertion groove in the center and can be swung horizontally, and is pressed by a latch that rises in the unlocking direction. The card insertion groove and the card insertion hole in the back casing match to allow insertion and removal of the card key, and the card key stopper is released by the latch rotated in the locking direction, so that the card is inserted. Since the groove is shifted from the card insertion hole to close the card key insertion part and prevent the card key from being inserted / removed, the card key being locked cannot be removed with a simple structure. Can do.

BRIEF DESCRIPTION OF THE DRAWINGS It shows one form for implementing this invention, (a) is a front view of a card type lock device, (b) is XX sectional drawing of (a), (c) is Y of (a). It is -Y sectional drawing. It is a back view of a card type lock device similarly. It is a longitudinal cross-sectional view which similarly shows the example which inserts a card key in a card type lock device. It is explanatory drawing which similarly shows the card type lock apparatus of a door unlocking state. It is explanatory drawing which shows the card-type lock apparatus of the state which similarly inserted the card key in the door unlocked state. It is explanatory drawing which shows the card type lock apparatus of the state which similarly inserts a card key, closes a door, and rotates a key in a locking direction. It is a perspective view of the disassembled state of a cylinder lock and an engagement board similarly. Similarly, the arrangement relationship between the engagement plate and the lateral slide type stopper will be described. (A) is a perspective view of a state in which the downward movement of the engagement plate is regulated by the lateral slide type stopper, and (b) is a lateral slide type stopper. It is a perspective view in the state where the downward movement of the engagement plate is permitted. It is a disassembled perspective view which similarly shows the structural example of a door opening / closing detection latch. Similarly, a specific configuration of the card key stopper is shown, (a) is a plan view when the card key is in a removable state, (b) when the card key is in a non-removable state. It is a top view. It is a rear view which shows the unlocking state of the card type lock apparatus in a prior art example. FIG. 12 is an enlarged vertical sectional view taken along line AA in FIG. 11. It is an enlarged vertical sectional view which similarly shows a locked state.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 6, the card-type lock device of the present invention includes a front frame 4 having a rectangular window 3 at a substantially center, and a back casing 1 disposed on the back side of the front frame 4. In the back casing 1, a card key insertion portion 5 having a card key stopper 9 provided inside the upper card insertion hole 5 a and a substantially L-shape disposed adjacent to the card key insertion portion 5. A cylinder lock Q provided with a hook-shaped latch L, and provided below the cylinder lock Q in order to restrict the rotation of the latch L. The latch L locking engagement plate 6 and the downward movement restriction of the engagement plate 6 are provided. It is generally composed of a lateral slide type stopper 7 and a latch restricting means P including door opening / closing detection latches 8 arranged below the lateral slide type stopper 7.

  As shown in FIGS. 1A to 1C, the back casing 1 and the front frame 3 are attached to the opening formed on the opening edge side of the open / close door via the attachment base 2 from the back side. . As shown in FIGS. 4 to 6, the card key insertion portion 5, the latch L of the cylinder lock Q, and the latch restricting means P are arranged adjacent to each other on the back side of the mounting base 2.

  Thus, as shown in FIGS. 1 (a) to 1 (c), one side of the card key a is provided at the approximate center of the mounting base 2 corresponding to the card key insertion portion 5 in the back casing 1. In order to make it visible from the outside, a rectangular window 3 covered with a transparent plastic frame plate is formed.

  In addition, a circular opening for fitting a cylindrical cylinder lock Q is formed in each of the front frame 4 and the mounting base 2 adjacent to the window 3. The key hole K side of the cylinder lock Q is exposed forward through the opening of the front frame 4, and the latch L of the cylinder lock Q is disposed on the back of the opening of the mounting base 2.

  As shown in FIGS. 1 (b) and 1 (c), a slit-like card insertion hole 5a is provided on the upper wall portion of the back casing 1 as a card key insertion portion 5, and a part of the center on the back side. Is curled in a horizontally long U shape so that the inserted card key a can be easily taken out from the card insertion hole 5a. Further, the side wall portion of the back casing 1 facing the opening edge side of the door is formed with a recess L in the shape of a recess, and the latch L of the rotating cylinder lock Q is located laterally through this doorway. Can be protruded. Furthermore, an entrance / exit for the door opening / closing detection latch 8 for projecting the door opening / closing detection latch 8 toward the door side is formed in a recessed shape below the entrance for the latch L.

  As shown in FIGS. 2 and 3, for example, five screw holes 11 a, 11 b,... 11 e are formed at equal intervals corresponding to the card key insertion portion 5 on the lower side of the back surface portion of the back casing 1. A screw 12 is screwed into one of the screw holes 11a, 11b,. A substantially arc-shaped concave groove 13 is formed at the lower edge of the card key a corresponding to the screwed position of the screw 12.

  As a result, when the regular card key a is inserted into the insertion hole 5a of the card key insertion portion 5, the card key a is moved down to the maximum by inserting the screw into the concave groove 13 of the card key a. To the position. On the other hand, when an unauthorized card key a having a concave groove 13 not corresponding to the position of the screw 12 is inserted into the card key insertion hole 5a, the lower end edge of the card key a is locked by the screw 12, The card key a is not inserted at the maximum lowered position. Of course, the card key a may have a shape that does not have the concave groove 13 at the lower edge.

  When the cylinder lock Q is closed and a key (not shown) is inserted into the key hole K and rotated in the locking direction, the latch L rotates to the side of the door based on the operation of the latch restricting means P described later. Then, it is inserted into a latch hole formed in the door frame of the locker body, and locking is completed. At this time, the key can be extracted from the key hole K.

  In addition, the key can be inserted into the key hole K and the key can be rotated in the unlocking direction based on the operation of the latch restricting means P described later to open the door. The key cannot be removed from the key hole K.

Next, a specific configuration example of the latch restricting means P will be described in detail with reference to FIGS.
First, the latch L is rotatably arranged in the opening of the mounting base 2 via a pedestal S. A vertically long slide groove 13a is formed below the back surface of the pedestal S, and corresponds to the slide groove 13a. The lower edge of the pedestal S is formed so that the entrance / exit of the engagement plate 6 is recessed (see FIG. 7).

  That is, as shown in FIG. 7, the latch L locking engagement plate 6 is formed in a substantially vertically-long rectangular piece shape, and the engagement protrusion 6 d protruding from the center of one side is the vertically long of the pedestal S. It fits in the shape of the slide groove 13a and can slide up and down.

  A U-shaped groove 6a is formed on the upper side of one side surface (side surface facing the card key insertion portion 5) of the engagement plate 6 and is substantially formed on the shaft portion 13b protruding from the lower end side of the base S. One end of a plate spring 14 wound in a U shape is engaged with the groove 6a, and the other end of the plate spring 14 is locked by an inner wall surface of a base S surrounding the shaft portion 13b. As a result, the engagement plate 6 is constantly biased upward by the elastic force of the leaf spring 14.

  In addition, an inclined upper end engaging portion 6b is formed on the upper corner side of the engaging plate 6, and two portions for locking and unlocking are formed at intervals of 90 ° of the latch L base. The engaging recesses 15a and 15b are engaged in pressure contact by the elastic force of the leaf spring 14.

  Of these two engaging recesses 15a and 15b, the engaging recess 15b positioned 180 ° with respect to the latch L protruding direction is for unlocking, and the engaging recess 15b positioned 90 ° with respect to the latch L protruding direction. The joint recess 15a is used for locking.

  Further, an L-shaped notched lower end engaging portion 6 c is formed on the lower corner side of the other side surface (side surface facing the door side) of the engaging plate 6, and the card is inserted into the insertion hole 5 a of the card key insertion portion 5. When the key a is not inserted, the lower end engaging portion 6c is locked to one of the inner edge portions of the recessed and exited entrance of the lateral slide type stopper 7 described later so that the latch L cannot rotate. It has become.

  As shown in FIGS. 8 (a) and 8 (b), the lateral slide type stopper 7 for restricting the downward movement of the engagement plate 6 has an end arm 7b side facing downward via an inclined corner portion 7a. The other end arm 7c side which is short and wide and faces sideways is elongated. An engaging protrusion 7d that protrudes along the longitudinal direction on the other end arm 7c side is fitted in a slide groove (not shown) that is horizontally long on the base S and can slide in the left-right direction.

  Further, an entrance / exit 7e for the engagement plate 6 is formed in a recessed shape on the front side surface on the side of the other end arm 7c facing the side of the lateral slide type stopper 7. The entrance / exit 7e is configured such that a narrow lower end portion and a wide intermediate portion (above the position of the lower end engaging portion 6c) of the engaging plate 6 can enter and exit through a step located substantially in the middle.

  The inner surface of the one end side facing the lower side of the lateral slide type stopper 7 is connected via a coil spring 17 arranged integrally with an L-shaped locking plate 16 attached to the mounting base 2. The lateral slide type stopper 7 itself is urged toward the insertion hole 5 a side of the card key insertion portion 5.

  At this time, as shown in FIG. 4, the lower end engaging portion 6c of the engaging plate 6 is locked to the inner edge located in the front end direction of the recessed entrance 7e of the lateral slide type stopper 7, and the downward movement is restricted. This prevents the latch L from rotating even if the key inserted into the key hole K of the cylinder lock Q is rotated in the locking direction.

  Further, as shown in FIG. 8B, when the card key a is inserted into the insertion hole 5a of the card key insertion portion 5, the lower corner portion of the card key a is inclined by the lateral slide type stopper 7. The side corners 7a are pressed against each other, and the lateral slide type stopper 7 itself is slid toward the outside door side against the elastic force of the coil spring 17.

  As a result of the movement of the lateral sliding stopper 7, the engagement between the inner edge at the entrance 7 e of the lateral sliding stopper 7 and the lower end engaging portion 6 c of the engaging plate 6 is disengaged, and the wide intermediate portion of the engaging plate 6 is released. The position (above the position of the lower end engaging portion 6c) can be moved to the lower side of the entrance 7e.

  As shown in FIG. 9, the door opening / closing detection latch 8 arranged below the lateral slide type stopper 7 is formed in a flat bottom shape, and a coil spring 18 is provided at an entrance / exit 1 a formed in a recessed shape on the side surface of the back casing 1. Is inserted through. That is, the door opening / closing detection latch 8 has a concave groove 8a formed on the upper surface side, and the center thereof is open over the rear and up and down directions.

Further, a coil spring 18 is inserted into the open part from the rear side, and a protrusion 8b formed from the inner part of the open part toward the rear, and a protrusion 1 that protrudes outward from the inner part of the entrance / exit of the back casing 1 outward. The coil spring 18 is interposed by b .

  Further, a locking claw 18b that is curved outward is provided on the other side of the door opening / closing detection latch 8 that faces the concave groove portion 8a, and even if the door opening / closing detection latch 8 moves outward, By engaging the locking claw 18b with a locking hole 18c formed on the back surface of the back casing 1, the door opening / closing detection latch 8 is prevented from being pulled out from the doorway on the side surface of the back casing 1.

  As shown in FIGS. 5 and 8 (b), the card key a is inserted into the insertion hole 5a of the card key insertion portion 5, and the wide intermediate portion (above the lower end engagement portion 6c) of the engagement plate 6 is placed sideways. Even when the sliding stopper 7 moves to the lower side of the doorway 7e, the lower end of the engaging plate 6 is locked to the upper wall surface behind the recessed groove 8a unless the door opening / closing detection latch 8 moves inward. The latch L does not rotate.

  On the other hand, when the door open / close detection latch 8 retreats inward against the spring force of the coil spring 18, the narrow lower end of the engaging plate 6 (below the lower end engaging portion 6c) opens and closes the door. Since it can be engaged with the concave groove portion 8a of the detection latch 8, the rotation between the two engagement concave portions 15a and 15b formed at every 90 ° interval of the latch L base portion can be freely performed.

  As shown in FIGS. 10A and 10B, the card key stopper 9 provided inside the card insertion hole 5a is a plate having a card insertion groove 9a having a width corresponding to the thickness of the card key a in the center. The base portion of the card key stopper 9 is attached to the tip of an arm portion 19a protruding forward from one end of the support plate 19 fixed to the attachment base 2 via the support shaft 20. It can swing in the horizontal direction. At this time, the intermediate coil portion of the coil spring 21 is wound around the support shaft 20, one end side of the coil is hung on the side surface of the arm portion 19 a, and the other end side of the coil is formed on the base side of the card key stopper 9 (not shown). It is suspended in the locking hole.

  The card key stopper 9 is pressed by the rear surface of the latch L rising as shown in FIGS. 4, 5, and 10 (a), so that the card key stopper 9 is swung outwardly. The insertion groove 9a matches the card insertion hole 5a in the back casing 1.

  On the other hand, as shown in FIGS. 6 and 10 (b), when the key is turned and the latch L is rotated by 90 ° and locked, the pressure on the back surface of the latch L is released, and the card key stopper 9 The card insertion hole 5 a in the back casing 1 is closed by the card key stopper 9 by swinging inward by the spring force of the winding spring 21.

Next, an example of use and operation of the form of the card type lock device according to the present invention configured as described above will be described.
First, the locking operation will be described. As shown in FIG. 4 and FIG. 8A, first, the lower end of the engagement plate 6 is set at the inner edge located in the front end direction of the recessed entrance 7e of the lateral slide type stopper 7. Since the engaging portion 6c is locked, the latch L is standing up and cannot be rotated laterally (unlockable state).

  And the above-mentioned regular card key a is inserted into the insertion hole 5a of the card insertion part 5 from the upper side with the door opened. At this time, the lower end corner portion of the card key a hits the inclined corner portion 7a of the lateral slide type stopper 7, and further presses strongly from above to reach the maximum lowered position, and the insertion operation of the card key a is completed.

  As shown in FIG. 5 and FIG. 8B, the lateral slide type stopper 7 is pushed by the lower end corner of the card key a and resists the elastic force of the coil spring 17 against the lateral slide type stopper 7 itself. It is slid toward the outside door side. At this time, the engagement between the lower end engagement portion 6c of the engagement plate 6 and the inner edge portion of the other end arm 7c of the lateral slide type stopper 7 is released, but the door opening / closing detection latch 8 is not moved inward. The narrow lower end of the engagement plate 6 is locked to the upper wall surface behind the recessed groove 8a of the open / close detection latch 8, and the latch L does not rotate.

  Further, when the door is closed in this state, the front end of the door opening / closing detection latch 8 comes into contact with the door frame of the locker body and moves backward against the coil spring 18. And the lower end part of the engaging plate 6 remove | deviates from the upper wall surface behind the recessed groove part 8a, and engages in the recessed groove part 8a inside. As a result, as shown in FIG. 6, the key inserted into the key hole K of the cylinder lock Q can be turned, and the latch can be rotated by 90 ° to be locked. By this locking rotation, the engaging recess 15a for locking the latch L and the upper end engaging portion 6b of the engaging plate 6 are engaged.

  At the same time, as shown in FIG. 10 (b), the pressing by the back surface portion of the latch L is released, and the card key stopper 9 swings inward by the elastic force of the crane winding spring 21, thereby the back casing 1. An insertion hole 5 a of the inner card insertion portion 5 is closed by a card key stopper 9. Thus, the card key a cannot be removed from the card key insertion hole 5a during locking. On the other hand, when the door is locked, the key can be removed from the key hole K, and the key is removed from the key hole K and stored.

  In order to open the door in this state, the key is inserted into the key hole K and rotated in the opposite direction to be unlocked. At this time, the key does not come out of the key hole K. In other words, when the door is open and unlocked, the key cannot be removed to prevent the key from being lost.

  Next, the unlocking operation will be described. The key is inserted into the key hole K and rotated in the unlocking direction. At this time, the door opening / closing detection latch 8 is in a state in which the front end abuts against the door frame of the rocker body and recedes against the elastic force of the coil spring 18, and therefore, as shown in FIG. Can be unlocked by rotating the latch L in the opposite direction 90 ° and unlocking.

  When the door is opened, as shown in FIG. 5, the door opening / closing detection latch 8 projects to the side of the door by the elastic force of the coil spring 18. As a result, the lower end portion of the engagement plate 6 is raised and locked to the upper wall surface behind the recessed groove portion 8a, and the latch L cannot be rotated in the locking direction.

  At the same time, when the card key stopper 9 is pressed by the back surface of the latch L, the card key stopper 9 itself swings, and the card insertion groove 9a of the card key stopper 9 and the card insertion hole 5a in the back casing 1 match. Thus, the card key a can be picked up with the fingertips and pulled upward.

  On the other hand, when the card key a is pulled out, as shown in FIGS. 4 and 8A, the lateral slide type stopper 7 is retracted by the elastic force of the coil spring 18 and the lateral slide type stopper 7 is recessed. The lower end engaging portion 6c of the engaging plate 6 is locked to the inner edge located in the tip direction of the notch-shaped entrance / exit 7e, so that the downward movement of the engaging plate 6 is prevented and the key is rotated in the locking direction. It becomes impossible. In order to rotate the key in the locking direction, the above-described locking operation procedure may be repeated.

a Card key K Key hole L Latch P Latch restricting means Q Cylinder lock S Base 1 Back casing 1 b Protrusion 2 Mounting base 3 Window part 4 Front frame 5 Card key insertion part 5a Card insertion hole 6 Engagement plate 6a Groove part 6b Upper end engagement Part 6c Lower end engaging part 6d Engaging protrusion 7 Side sliding stopper 7a Corner part 7b One end arm 7c Other end arm 7d Engaging protrusion 7e Entrance / exit 8 Door opening / closing detection latch 8a Groove part 8b Protrusion 9 Card key stopper 9a Card insertion groove ( 11a) Screw hole 12 Screw 13 Groove 13a Slide groove 13b Shaft 14 Plate spring 15a Engagement recess 15b for locking Engagement recess 16 for unlocking Locking plate 17 Coil spring 18 Coil spring 18c Locking hole 19 Support plate 19a Arm portion 20 Support shaft 21 Crew spring 103 Mounting case 105 Outer case 106 Concave 107 in the opening 109 case 111 tablet body 111a rotating shaft 114 engaging plate 116 latch 124 spring 128 engaging piece 133 door opening and closing detection latch 138 compression spring 143 inserted recess

Claims (2)

It has a front frame having a rectangular window at the substantially center, and a back casing disposed on the back side of the front frame, and in the back casing, a card key insertion part for inserting a card key from above, A latch for the cylinder lock disposed adjacent to the card key insertion portion and a latch restricting means disposed on the lower side of the latch, each of the latch restricting means for unlocking and locking formed on the latch base. An engagement plate that is slidable in the vertical direction so as to be engaged with the engagement recess through the elastic force of the leaf spring, and when the card key is not inserted into the card key insertion portion, the engagement plate moves downward. On the other hand, when the card key is inserted, it is slidable in the lateral direction by pressing and releasing the card key with respect to the card key insertion portion so as to release the restriction of the downward movement of the engagement plate. The sliding stopper and the lower end of the engagement plate are locked by the outward projecting movement to prevent the latch from rotating, and the lower end of the engagement plate is released by the inward retracting movement. A card-type lock device comprising a door opening / closing detection latch that allows rotation of the latch . A card key stopper that is arranged near the upper card key insertion part, has a card insertion groove in the center and can be swung horizontally, and is pressed by a latch that rises in the unlocking direction. The card insertion slot and the card insertion hole in the back casing match to make the card key insertable / removable, and the card key stopper is released by the latch rotated in the locking direction so that the card is inserted. groove is closed key card insertion portion is offset from the card insertion hole, formed claims 1 Symbol placement of the card-type lock device to prevent insertion and removal of the card key.

Images