JP2008069603A - Electric lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce lateral pressure of a door and a door frame to a dead bolt. <P>SOLUTION: This electric lock has at least a driving source, a power transmission means, a top joint and the dead bolt in a lock box. A projection input piece is fixedly arranged in an inner end part of the dead bolt. While a lateral pressure receiving piece is arranged in the lock box, the lateral pressure receiving piece engages with a bracket by being pushed out via a movable member engaging with the projection input piece when the dead bolt projects from the front in locking, on the other hand, retreats in the lock box via the movable member pulled back by an energizing means arranged in the lock box when the dead bolt retreats in the lock box in unlocking. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electric lock for side pressure countermeasures against dead bolts.

  Patent Documents 1 to 4 relate to a countermeasure against a side pressure of a dead bolt protruding from a lock box. In claim 4 of Patent Document 1, when the side pressure of the door or door frame is applied to the back surface of the latch body, there is a matter of setting the thickness of the latch body larger than the thickness of the dead bolt so that the side pressure is not applied to the dead bolt. Are listed.

  Japanese Patent Application Laid-Open No. H10-228561 describes a matter of improving the strength against side pressure applied to the latch assembly when the door is closed in a lock box having a latch assembly that also serves as a dead bolt.

  Patent Document 3 describes a structure of a lock dead bolt that can prevent the side pressure crossing the dead bolt from being concentrated on the edge of the dead window of the lock box.

  Furthermore, Patent Document 4 discloses a door lock box in which the edge forming the dead window of the case body is not easily torn (the edge is strong) even when a strong side pressure is applied to the dead bolt from the outside. The structure of is described.

As described above, various attempts have been made in the past to reduce the side pressure of the door and door frame against dead bolts. However, particularly in electric locks, the side pressure of the door and door frame against dead bolts is reduced. A new configuration is desired.
JP 2006-37355 A JP 2005-315002 A JP 2003-247363 A JP 2003-247362 A

  The intended purpose of the present invention is to reduce the side pressure of the door and door frame against the dead bolt. Desirably, the side pressure applied to the dead bolt is dispersed in the side pressure receiving piece. The second purpose is that the side pressure receiving piece protrudes from the lock box and does not get in the way when the door is opened. Other purposes include preventing the side pressure caused by the door from being applied to the dead bolt while the dead bolt is retracting, and allowing the side pressure countermeasure member to be easily incorporated into the lock box.

  The electric lock of the present invention is an electric lock provided with at least a drive source, a power transmission means, a dharma, and a dead bolt on the lock box, and a protruding input piece is fixedly provided at the inner end of the dead bolt, In the lock box, a side pressure receiving piece is provided so as to be movable back and forth. When the dead bolt protrudes from the front during locking, the side pressure receiving piece is pushed out by the protruding input piece and engages with the receiving bracket. When the dead bolt is retracted into the lock box during locking, it is pulled back by the protruding input piece and retracted into the lock box.

  Further, the electric lock of the present invention is provided with a protruding input piece fixedly provided at an inner end portion of the dead bolt in an electric lock provided with at least a drive source, power transmission means, a dharma, and a dead bolt in the lock box. On the other hand, the lock box is provided with a side pressure receiving piece, and the side pressure receiving piece is pushed through a movable member that engages with the protruding input piece when the dead bolt protrudes from the front during locking, and is received by the receiving metal fitting. On the other hand, when the dead bolt is retracted into the lock box at the time of unlocking, it is retracted into the lock box via the movable member retracted by the urging means disposed in the lock box.

(1) The side pressure of the door or door frame against the dead bolt can be reduced when the door is closed by taking the side pressure countermeasure on the side pressure receiving piece without taking the side pressure countermeasure on the lock box or the dead bolt. Desirably, it is possible to prevent the dead bolt from being subjected to side pressure as much as possible.
(2) When the door is opened, the side pressure receiving piece protrudes from the lock box and does not get in the way.
(3) Depending on the embodiment, not only when the door is closed, but also when the dead bolt is moving backward, it is possible to prevent the side pressure caused by the door from being applied to the dead bolt as much as possible.
(4) By forming the side pressure countermeasure movable member as a unit together with the side pressure receiver piece, the side pressure countermeasure member (the side pressure receiver piece and the movable member) can be easily incorporated into the lock box.

  The present invention will be described below with reference to the first embodiment shown in FIGS.

(1) Environment for Implementing the Invention FIG. 1 is a conceptual diagram of an electric lock including the main part of the present invention. First, with reference to FIG.1 and FIG.2, the main components of an electric lock and the flow of an operation | movement aspect are demonstrated easily. The electric lock X is provided with a control unit 2, a drive motor 3, a power transmission means 4 including a clutch mechanism, a dharma 5, a dead bolt 6, and the like in the lock box 1. In FIG. 2, the specific configuration of the control unit 2, the drive motor 3, the power transmission means 4 including the clutch mechanism, and the like is not a specific requirement of the present invention and is omitted.

  As is well known, the dead bolt 6 moves forward to the door bracket side metal fitting 8 with reference to the front 7 of the lock box 1 by the driving force of the driving motor 3. At the time of locking, the dead bolt 6 protruding from the front 7 of the lock box 1 is engaged with the receiving bracket 8, while at the time of unlocking when opening the door D, the dead bolt 6 begins to move back into the lock box 1, At the time of complete unlocking, the front end surface of the dead bolt 6 is located on the outer surface of the front 7.

By the way, when the dead bolt 6 is locked forward from the front 7, a “side pressure” is applied to the side surface 6 a of the dead bolt 6. In other words, when the door is closed, the dead bolt 6 is subjected to side pressure of the door or door frame. It is well known that a load such as a side pressure of a door or a door frame is applied to a dead bolt particularly in an abnormal situation (for example, an earthquake). In particular, in the case of an electric lock, a side pressure due to the opening of the door is often applied even when the dead bolt 6 is retracted. This is because, as a rule of thumb, there is an impatient person who tries to open the door D while the deadbolt 6 is retracting (before complete unlocking).
Therefore, the electric lock X of the present embodiment is provided with the “side pressure countermeasure movable member Y” together with the side pressure receiving piece 12 so that the load described above is not applied to the dead bolt 6 not only during locking but also during unlocking. .

  That is, as shown in FIGS. 1 and 2, the movable member Y provided with the side pressure receiving piece 12 is disposed below the dead bolt 6 so that the movable member Y is fixed to the dead bolt 6 when locked. As a result, the side pressure receiving piece 12 located on the front side of the movable member Y protrudes from the front 7 and engages with the receiving metal fitting 8. In this embodiment, the stoppers 41 and 41A constituting the side pressure countermeasure movable member Y further restrain the side pressure receiving piece 12.

  On the other hand, at the time of unlocking, the stoppers 41 and 41A constituting the movable member Y allow the side pressure receiving piece 12 to move on condition that the dead bolt 6 is retracted. In this embodiment, one of the purposes is to prevent the side pressure caused by the door from being applied to the dead bolt 6 while the dead bolt 6 is moving backward. The case where the bolt 6 is completely retracted into the lock box 1 is described. Therefore, the timing (backward time point) at which the movable member Y including the side pressure receiving piece 12 moves backward is delayed from the dead bolt 6 as much as possible.

  In this embodiment, the stopper described above has a second engaged portion that engages with the locking means on the lock box side, and this second engaged portion is directly or indirectly attached to the lock box when the door is closed. On the other hand, when the dead bolt is retracted, the movable member Y provided with the side pressure receiving piece 12 is separated from the locking end surface when the dead bolt is retracted. Retreat by the spring force of the urging means provided in the lock box. Hereinafter, the specific requirements of the present invention will be described in order, but detailed matters omit the drawings and the description thereof.

(2) Input piece 11
FIG. 5 is a schematic explanatory view showing the protruding state of the dead bolt 6 and the side pressure receiving piece 12 during locking. As described above, at the time of locking, the dead bolt 6 is pushed out through the protruding input piece 11 having one end fixed to the side wall 6 a of the dead bolt 6.

  6A is a front view of the input piece 11, and FIG. 6B is a perspective view. The input piece 11 has an upper end portion 11a fixed to the central portion of the side wall 6a of the dead bolt 6 through a plurality of unfixed fasteners, and on the other hand, a projecting end portion continuously provided to the bent portion of the central portion 11b ( The lower end 11c protrudes vertically from the lower surface (one of the side walls) of the dead bolt 6.

  Thus, a total of two press-type input portions (engaging portions) 13 and 14 formed by bending are provided at the left and right portions (front end portion and rear end portion) of the wide end portion of the protruding end portion 11c. ing. Here, with reference to FIG. 6A, the left reference numeral 13 is a front input section, while the right reference numeral 14 is a rear input section.

  The front input portion 13 is connected to a first engaged portion 44 of a stopper (first stopper 41 in the embodiment) located on the upper side when the dead bolt 6 satisfies the “predetermined retreat condition” at the time of unlocking. By engaging, the second engaged portion 46 a is separated from the locking end surface 18 b (described later) of the locking means 18 provided in the lock box 1. On the other hand, the rear input unit 14 engages with the first engaged portion 44 of the stopper 41 during locking, and pushes the movable member Y toward the front 7 side. As a result, the side pressure receiving piece 12 protrudes from the front 7.

(3) Side pressure receiving piece FIG. 7 is an explanatory view of a side pressure receiving piece, a spring member for the side pressure receiving piece, and the like. In this embodiment, as an example of the side pressure receiving piece, an inversion type side pressure receiving piece called “inversion latch” is adopted. Since the reversing side pressure receiving piece is retracted into the lock box 1 when the door is opened, it is different from the reversing latch referred to by those skilled in the art, but is reversed (rotated) and retracted similarly to the reversing latch.

  2 and 4, when the door D is closed, the side pressure receiving piece 12 receives the spring force of the spring member (side pressure receiving piece spring) 15 depending on the configuration of the receiving metal 8 and the receiving metal 8 Engage with. In this embodiment, it protrudes from the front 7 via a spring receiving piece 16 (see FIGS. 4 and 7) having a cross-sectional channel shape that fits into a notch 12a formed at the rear end of the reversible side pressure receiving piece 12.

  Thus, the side pressure receiving piece 12 has a vertical engagement surface 12b that receives a side pressure directly at its protruding tip. Further, vertical protrusion support shafts 12c are provided on the upper surface and the lower surface orthogonal to the vertical engagement surface 12b, respectively. Further, on the upper and lower surfaces of the rear end portion, there are provided projecting piece-like engagement portions 12d that respectively engage with stopper portions 45 of stoppers 41 and 41A described later. The reversible side pressure receiving piece 12 of this embodiment is held by a side pressure receiving piece holder 31 to be described later, and can move forward and backward together with the side pressure countermeasure movable member Y.

(4) Movable member Y-movable base plate 21
The side pressure receiving piece 12 that receives the side pressure restrains the movement of the side pressure receiving piece 12 when locked (when the door is closed), but on the condition that the dead bolt 6 is retracted when opening the door, the side pressure receiving piece 12 moves. A movable member Y for countermeasure against lateral pressure is provided.

  The movable member Y includes a movable base plate 21 that is guided directly (in the embodiment) or indirectly to the lock box. 4 and 14, a state in which a pair of movable base plates 21 are incorporated in the lock box 1 in an opposing state is shown in cross section. In addition, FIG. 4 shows the forward position of the movable base plate 21 at the time of locking, while FIG. 14 shows the backward position of the movable base plate 21 at the time of complete unlocking.

  8A shows the first movable base plate 21a that moves in the horizontal direction while being guided by the guide portion of one side wall (for example, the wide side wall of the case body) 1a of the lock box 1, while FIG. (B) shows the second movable base plate 21b which is guided by the guide portion of the other side wall (for example, the wide side wall of the case lid) 1b and moves in the horizontal direction. Further, FIG. 9 schematically shows a main configuration of one side wall of the lock box 1 (the other side wall 1b is the same).

  First, the first movable base plate 21a will be described with reference to FIG. Since the second movable base plate 21b has the same or similar configuration as the first movable base plate 21a, the same reference numerals are given for convenience and redundant description is omitted.

  Reference numeral 22 denotes a slide engagement portion that is formed to protrude from the center of the tip of the movable base plate 21a (21b). The slide engagement portion 22 is a lock box side guide portion (for example, a horizontal side) of one side wall 1a of the lock box 1. Engage with the notch 17. Reference numeral 23 denotes a horizontal guide portion (for example, a horizontal groove) formed in the central portion of the front end portion of the movable base plate 21a (21b) from the front end surface to a portion closer to the rear end portion. Part of. The spring receiving piece 16 that receives the tip of the spring member 15 for the side pressure receiving piece is guided by the horizontal guide portion 23 of the movable base plate 21a (21b) and can move forward and backward.

  A total of four connecting cutouts 24 are formed near the front end and the rear end of the movable base plate 21a (21b). These connection cutouts 24 include side pressure receiving pieces shown in FIG. The insertion protrusions 32 of the holder 31 are engaged with each other. Reference numerals 25 denote shaft holes respectively formed above and below the rear end of the movable base plate 21a (21b). A pair of upper and lower horizontal shafts 26 (support shafts for stoppers) are attached to these shaft holes 25.

(5) Side pressure receiving piece holder 31
Next, FIG. 10 shows the side pressure receiving piece holder 31. The movable member Y of this embodiment includes a side pressure receiving piece holder 31 that is combined (provided integrally) with the movable base plate 21a (21b) via a plurality of insertion protrusions 32. The side pressure receiving piece holder 31 is a frame-shaped support piece having a notch portion on the front wall or the like.

  Thus, the side pressure receiving piece holder 31 basically comprises an upper and lower horizontal opposing wall 31a and a vertical rear wall 31b connecting these horizontal opposing walls 31a, and on the front end side of the horizontal opposing wall 31a. A horizontal insertion protrusion 32 is formed, and an L-shaped insertion protrusion 32 is formed from the rear end of the horizontal facing wall 31a to the vertical rear wall 31b. A short front wall 31c that comes into contact with the protrusion support shaft 12c of the side pressure receiving piece 12 is provided at the tip of the upper and lower horizontal opposing walls 31a, respectively, and further from the tip of the upper and lower horizontal opposing walls 31a to the vertical rear wall 31b. A long notch 33 into which the stopper portions 45 of the pair of stoppers 41 and 41A respectively enter is formed vertically.

(6) Stopper 41, 41A
Next, (a) in FIG. 11 is a first stopper 41 that directly engages with the input piece 11, and (b) in FIG. 11 is indirectly engaged with the input piece 11 through the first stopper 41. A second stopper 41A is shown.

  The first and second stoppers 41 and 41A are pivotally supported by the above-described movable base plate 21a (21b) via a pair of upper and lower horizontal shafts 26, and are connected to the connecting shaft 42 so as to be synchronized with each other. Are connected through.

  The first stopper 41 will be described with reference to FIG. Since the second stopper 41A has the same or similar configuration as the first stopper 41, the same reference numerals are used for convenience and redundant description is omitted.

  Reference numeral 43 denotes a vertical portion (the first stopper 41 has a pair, whereas the second stopper 41A has one). The vertical portion 43 includes a pivot hole 43a for the horizontal shaft 26 and A connecting hole 43b for the connecting shaft 42 is formed. In this embodiment, the protruding upper end of the vertical portion 43 of the first stopper 41 disposed above has a function of an engaged portion 44 that engages with the rear input portion 14 of the input piece 11. .

  Reference numeral 45 denotes a knife-shaped stopper portion extending forward through a vertical bent portion 43 through an unfolded bent portion. This stopper portion 45 enters the long notch portion 33 of the side pressure receiving piece holder 31, and the side pressure receiving piece 12. Is engaged with and disengaged from the engaging portion 12d.

  Further, reference numeral 46a denotes a small protrusion-like second engagement formed on a part (for example, a front end portion) of a protruding portion 46 protruding in a wing shape on the upper side of the stopper portion 45 (upper and lower sides in the second stopper 41A in the drawing). At the joint portion, the second engaged portion 46a is locked to the locking end surface 18b of the locking means 18 provided directly or indirectly on the lock box 1 when the door is closed, while the dead bolt is completely retracted. When it does, it leaves | separates from the said latching end surface 18b via the input piece 11. FIG.

  By the way, reference numeral 49 is an urging means for the stoppers 41 and 41A. In this embodiment, it is wound around a fixed shaft 50 provided at the lower end portion of the lock box 1, and one end portion is pressed against the inner wall of the lock box 1. The other end is in pressure contact with the connecting shaft 42. The biasing means 49 of the present embodiment pulls back the movable member Y as described above at the moment when the second engaged portions 46a of the stoppers 41 and 41A are separated from the locking end surface 18b of the lock box 1. As a result, the side pressure receiving piece 12 always captured by the movable member Y completely enters the lock box 1 as shown in FIG.

(7) Locking End Surface of Locking Means FIG. 9 shows an example of the locking means 18 formed directly on the lock box 1. The locking means 18 can also be achieved by fixing mountain-shaped protruding pieces having inclined surfaces and locking end surfaces on the inner surfaces of the one side wall 1a and the other side wall 1b of the lock box 1, respectively. The first side wall 1a and the second side wall 1b are directly formed.

  In other words, 19 is a pair of upper and lower horizontal guide cutouts, and an angled surface 18a and an angle projection 18 having a locking end face 18b are provided on the front end side of the horizontal guide cutout 19. In this embodiment, since the movable side pressure receiving piece 12 is employed, the locking means 18 is provided via the locking end face 18b so that the side pressure receiving piece 12 does not retract and come off the receiving metal fitting 8 during locking. Thus, the second engaged portions 46a of the stoppers 41 and 41A are locked.

  On the other hand, as shown in FIG. 12, when the dead bolt 6 satisfies a predetermined retreating condition, in other words, when the dead bolt 6 is in the fully unlocked position fully retracted into the lock box 1, Since the stoppers 41 and 41A rotate by a required amount via the front input portion 13 of the input piece 11 on the dead bolt 6 side, each second engaged portion 46a is separated from each locking end surface 18b. As a result, as described above, the side pressure receiving piece 12 is automatically retracted into the lock box 1 via the biasing means 49 and the movable member Y.

  The first example shown in the embodiment of the invention is slightly complicated to satisfy not only the intended purpose of the present invention but also all the purposes, but as shown in FIGS. 15 and 16, This can also be achieved by a combination of basic components.

  Here, the invention shown in FIGS. 15 and 16 will be described as a second embodiment, and will be briefly described using the same reference numerals as those in the first embodiment. In the second embodiment, similarly to the first embodiment, the lock box is provided with at least a drive source, a power transmission means, a dharma, and a dead bolt. Similarly to the first embodiment, a protruding input piece 11A is fixedly provided at the inner end of the dead bolt 6A. Then, the first engaging portion 14A for extrusion is provided at the rear end portion of the protruding end portion 11c of the protruding input piece 11A, while the second engaging portion 13A for pulling back is provided at the distal end portion of the protruding end portion 11c. Yes.

  Further, similarly to the first embodiment, the lock box 1 is provided with a side pressure receiving piece 12A, and the side pressure receiving piece 12A is provided so as to freely advance and retract similarly to the dead bolt 6A. The side pressure receiving piece 12A has an engaging arm 44A that protrudes from one side wall (for example, the upper wall) and selectively engages with the first engaging portion 14A and the second engaging portion 13A of the protruding input piece 11A. Yes. Therefore, the second embodiment has no movable member. Of course, a movable member may be incorporated in the same manner as in the first embodiment in order to delay the timing of retreating from the dead bolt 6 (retracting point) as much as possible. However, if the initial object of the present invention is achieved, it is movable. The member is not a specific (limited) requirement.

  Thus, when the dead bolt 6A protrudes from the front 7 at the time of locking, the side pressure receiving piece 12A is pushed out by the first engaging portion 14A for pushing out of the protruding input piece 11A so as to be engaged with the receiving metal fitting 8. On the other hand, when the dead bolt 6A is retracted into the lock box 1 at the time of unlocking, the dead bolt 6A is pulled back into the lock box 1 by being pulled back to the second engaging portion 13A for pulling back of the protruding input piece 11A. Therefore, in the second embodiment, the biasing means 49 for pulling back the side pressure receiving piece 12A into the lock box 1 is not a specific (limitation) requirement of the invention.

  The present invention is mainly used in the locksmith and joinery industries.

FIG. 1 to FIG. 14 are explanatory diagrams showing the best embodiment (first embodiment) of the present invention. 15 and 16 are explanatory views showing a second embodiment of the present invention.
The conceptual diagram which shows the environment of this invention. Explanatory drawing at the time of locking. Explanatory drawing seen from the front side. The schematic sectional drawing which shows the advance position of the movable base board at the time of locking. The schematic explanatory drawing which shows the protrusion state of the dead bolt and the side pressure receiving piece at the time of locking. FIG. 6A is a front view of the input piece, and FIG. Explanatory drawing of the spring member etc. for a side pressure receiving piece and a side pressure receiving piece. FIG. 8A is a schematic explanatory view showing a first movable base plate, and FIG. 8B is a schematic explanatory view showing a second movable base plate. Schematic explanatory drawing of one side wall (the other side wall is the same) of a lock box. The schematic explanatory drawing of a side pressure receiving piece holder. FIG. 11A is a schematic explanatory diagram of a first stopper that is directly engaged with the input piece, and FIG. 11B is a schematic explanatory diagram of a second stopper that is indirectly engaged with the input piece 11 via the first stopper. Explanatory drawing which a stopper act | operates when a dead bolt reverse | retreats. Explanatory drawing of the state by which the member for a side pressure countermeasure (a side pressure receiving piece and a movable member) was pulled back from the urging | biasing means on condition that it will be in the state of FIG. The schematic sectional drawing which shows the retreat position of the movable base board at the time of complete unlocking. Schematic explanatory drawing of 2nd Example (at the time of locking). Schematic explanatory drawing of 2nd Example (at the time of unlocking or at the time of unlocking).

Explanation of symbols

X ... Electric lock, Y ... Movable member for side pressure countermeasure, 1 ... Lock box, 6, 6A ... Dead bolt, 7 ... Front, 8 ... Receptacle, 11, 11A ... Projection input piece, 11c ... Projection end, 12, 12A ... Side pressure receiving piece, 13 ... Push type input part (engagement part), 13A ... Second pull back engagement part, 14 ... Push type input part (engagement part), 14A ... First engagement part for extrusion, DESCRIPTION OF SYMBOLS 15 ... Spring member (side pressure receiving piece spring), 18 ... Locking means, 18b ... Locking end surface, 19 ... Horizontal guide notch, 21 ... Movable base plate, 21a ... First movable base plate, 21b ... Second movable base Plate, 26 ... Horizontal shaft, 31 ... Side pressure receiving piece holder, 32 ... Insertion protrusion, 33 ... Long notch, 41, 41A ... Stopper, 42 ... Connecting shaft, 44 ... First engaged portion, 44A ... Engaging arm 45 ... stopper portion, 46 ... protruding portion, 46a ... second engaged portion, 49 ... attached Means, 50 ... fixed shaft.

Claims (7)

In the electric lock provided with at least a drive source, power transmission means, dharma, and dead bolt, the lock box is fixedly provided with a protruding input piece at the inner end of the dead bolt, while the lock box has a side pressure receiver. The side pressure receiving piece is pushed out by the protruding input piece when the dead bolt protrudes from the front during locking and engages with the receiving bracket, while the dead bolt is locked by the lock box when unlocked. When the electric lock is retracted, the electric lock is pulled back into the protruding input piece and retracted into the lock box. 2. The protruding input piece according to claim 1, wherein the protruding input piece has a first engaging portion for extrusion at a rear end portion of the protruding end portion, and has a second engaging portion for pulling back at a tip portion of the protruding end portion. An electric lock characterized by In the electric lock provided with at least a drive source, power transmission means, dharma, and dead bolt, the lock box is fixedly provided with a protruding input piece at the inner end of the dead bolt, while the lock box has a side pressure receiver. The side pressure receiving piece is pushed through a movable member that engages with the protruding input piece when the dead bolt protrudes from the front during locking, and engages with the receiving bracket while dead. When the bolt is retracted into the lock box, the electric lock is retracted into the lock box via the movable member pulled back by the urging means disposed in the lock box. 4. The electric lock according to claim 3, wherein the urging means also urges a stopper constituting the movable member. 5. The electric lock according to claim 3, wherein the stopper of the movable member restrains the movement of the side pressure receiving piece during locking. 4. The movable member according to claim 3, wherein the movable member is a movable base plate that moves in the horizontal direction, and a stopper that is pivotally supported by the movable base plate and engages with the input piece and the side pressure receiving piece. An electric device comprising: a stopper having a portion; an urging means for constantly urging the stopper in a direction for fixing the side pressure receiving piece; and a side pressure receiving piece holder integrally provided on the movable base plate. Tablets. 7. The stopper according to claim 6, wherein the stopper has a second engaged portion, and the second engaged portion is engaged with a locking end surface of a locking means provided directly or indirectly on the lock box when the door is closed. On the other hand, when the dead bolt is retracted, the electric lock is separated from the locking end face through the input piece.

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