JP4607224B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device used for a sliding door.

  Conventionally, as a locking device, for example, a locking device that is provided in a sliding door and is engaged with an engagement recess formed in an inner portion of an entrance by rotating a hook portion is known (for example, Patent Document 1).

  However, the conventional locking device has a problem that the sliding door easily breaks due to a rough opening and closing. Moreover, since only the hook portion is engaged, there is a problem that the locked state can be easily released without using a key.

Japanese Patent No. 4444640

  An object of the present invention is to provide a locking device having a robust configuration such as excellent impact resistance and excellent reliability at the time of locking.

As a means for solving the above problems, the present invention provides:
Locking device,
The device body;
It is attached to the device main body, and protrudes from the device main body and comes into contact with the door butt of the sliding door, thereby being movable to a locking position for preventing the sliding door from moving and a standby position for allowing the sliding door to move, and an engagement receiving portion. A first locking part having a moving member formed with
A key cylinder that is attached to the apparatus main body and exposes a key hole from the apparatus main body, and an engagement receiving portion formed on the moving member of the first locking portion within the apparatus main body by operating a key on the key cylinder. A second locking portion having a lock position for engaging and positioning the moving member at the lock position, and a rod capable of reciprocating between the unlock position and the unlock position;
It is set as the structure provided with.

  With this configuration, the sliding door can be brought into the locked state by contacting the moving member positioned by the rod instead of the rod of the second locking portion. Therefore, a robust locking structure can be provided only by making the moving member and its support structure strong. Moreover, since it has divided into the site | part (1st locking part) which positions the locking part (2nd locking part) by a key, and a sliding door, it is excellent in the reliability (antitheft property) at the time of locking. In addition, the thing of the various structure which can position a moving member is employable as a 2nd locking part.

  The first locking portion is provided on the moving member so as to be rotatable, and when the moving member is moved to the standby position, the first locking portion is suspended along the surface of the sliding door to move the moving member to the locking position. It is preferable to include a rotating member that can be partially immersed in the apparatus main body.

  With this configuration, it is easy to determine the moving position of the moving member, and forgetting to lock can be prevented.

  The apparatus main body is provided with guide portions at predetermined intervals on both sides of a position where a part of the rotating member appears, and the guide portion is positioned along the moving member when the moving member is moved to the locking position. It is preferable that the protruding structure is formed integrally with the rotating member, and the rotating member is protruded downward when the moving member is moved to the standby position.

  According to this configuration, it is possible to easily determine whether or not the moving member has accurately moved to the locking position depending on whether or not the rotating member is integrated with the guide portion. Further, since the rotating member protrudes from the guide portion, it is possible to easily determine whether or not the moving member has moved to the standby position.

  The sliding door is preferably provided with an elastic member that presses the door butt against the moving member of the first locking portion located at the locking position in the closed position.

  With this configuration, it is possible to make the closed state of the sliding door by the moving member moved to the locking position an appropriate state without shakiness by simply providing the sliding door with the elastic member.

  The elastic member may be provided at the door butt of the sliding door so as to be in direct pressure contact with the moving member.

  According to the present invention, the structure includes the first locking part having the moving member for directly preventing the movement of the sliding door and the second locking part for preventing the movement of the moving member, thereby strengthening the structure of the moving member. Thus, the locked state of the sliding door can be made robust and the reliability of the locked state can be obtained.

(A) is the front view of the state seen from the inside which shows the doorway and sliding door which employ | adopted the locking device which concerns on this embodiment, (b) is an expanded sectional view of a door stop part. (A) is a perspective view which shows the locking state of the locking device of FIG. 1, (b) is a fragmentary perspective view which shows an unlocking state. (A) is the front view of the locking device of FIG. 1, (b) is the sectional drawing.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the following description, terms indicating specific directions and positions (for example, terms including “up”, “down”, “side”, “end”) are used as necessary. Is for facilitating understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms. Further, the following description is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a sliding door 1 (single sliding door) provided with a locking device 13 according to this embodiment. This sliding door 1 is provided in the entrance / exit 2 formed in the wall surface etc. of a building. The entrance / exit 2 is a rectangular opening, and a hanger rail 4 is provided from an inner upper portion to an upper portion of a sleeve portion 3 to which the sliding door 1 can move. A rubber door stopper 5 is provided on one side edge of the doorway 2 (portion where the door tip of the sliding door 1 abuts). The door stop receiving portion 5 has a substantially U-shaped cross section and abuts against the door end of the closed sliding door 1 to prevent displacement. However, the door-to-door receiving part 5 is not necessarily required.

  The sliding door 1 is made of steel, and a pair of rollers 6 supported on the hanger rail 4 so as to be reciprocally movable is provided on the left and right sides at the upper end. A window portion 7 that opens inward and outward is formed in a portion above the central portion of the sliding door 1. A plate made of a light-transmitting material such as tempered glass or acrylic is fitted in the window portion 7. In addition, a ventilation portion 8 that communicates the inside and the outside is formed at a lower portion than the central portion of the sliding door 1. The ventilation portion 8 is formed with slit-like air holes at predetermined intervals. As shown in FIG. 1B, a door stop 9 is provided at the door of the sliding door 1 via a mounting plate 9a. The mounting plate 9a is a metal plate having a substantially U-shaped cross section, is attached so as to cover the side edge of the sliding door 1, and is fixed to the sliding door 1 with screws from the front and back surfaces. The door stop 9 is made of silicon, and is formed in a cross-sectional cylindrical shape having an inclined surface that gradually approaches toward the tip side. And before fixing the attachment plate 9a to the sliding door 1, it fixes with screws to the attachment plate 9a from the inner surface side. The door stop 9 alleviates the impact when the sliding door 1 is closed, and prevents finger padding. Further, the door stop 9 is elastically deformed by being pressed against the door receiving portion 5 in a state where the doorway 2 is closed by the sliding door 1. At the center of the sliding door 1, the handle 10 is formed on the inner and outer surfaces. In addition, an elastic member 11 such as EPDM (ethylene-propylene-diene rubber), urethane or the like is integrated in the door bottom side central portion of the sliding door 1. This elastic member 11 is provided in order to press-contact with the moving member 26 of the locking device 13 mentioned later.

  As shown in FIG. 3B, a locking device 13 according to the present invention is provided in the attachment port 12 formed in the central portion of the side edge portion (sleeve portion 3) constituting the doorway 2. The locking device 13 includes a device main body 14 provided with a first locking portion 15 and a second locking portion 16.

  The apparatus main body 14 is formed in a hollow box shape by screwing and fixing a front plate 17, an intermediate plate 18 and a back plate 19 made of metal (for example, stainless steel). Around the apparatus main body 14, a groove 20 is formed by an intermediate plate 18 and a back plate 19. Here, the length of the bottom surface portion of the groove 20 constituted by the intermediate plate 18 is formed sufficiently longer than the length constituted by the back plate 19. In the groove portion 20, an inner edge portion of the attachment port 12 formed in the sleeve portion 3 is located. A rectangular guide hole 21 is formed by the front plate 17 and the intermediate plate 18 in the lower central portion of the apparatus main body 14. A communication hole 22 is formed in the upper wall constituting the guide hole 21 so that a rod 35 of the second locking portion 16 described later appears and disappears. On the front plate 17, guide portions 23 (see FIG. 2) project from both side portions constituting the opening of the guide hole 21. As shown in FIG. 2B, the guide portion 23 is formed with a stepped portion 23a on the opposing surface, and the outer surface is formed by an arcuate curved surface. Further, as shown in FIG. 3 (b), an auxiliary wall 24 that connects the two guide portions 23 protrudes from the opening lower edge portion of the communication hole 22. A support plate 25 for screwing and fixing the second locking portion 16 is provided inside the apparatus main body 14. A circular hole is formed in the front plate 17 and is positioned so that the surface portion of the key cylinder 33 of the second locking portion 16 is exposed. Further, the intermediate plate 18 and the back plate 19 are formed so as to be displaced from the front plate 17 in the horizontal direction so that a circular hole is formed and positioned so that the thumb turn lock 34 of the second locking portion 16 is exposed.

  The first locking part 15 is located on the front side of the front plate 17, which is slidably disposed in a guide hole 21 formed in the apparatus main body 14, and is rotatably connected to the moving member 26. It is comprised with the rotation member 27. FIG.

  The moving member 26 is a rod having a rectangular cross section, and in the state of being arranged in the guide hole 21, the width dimension is sufficiently larger than the thickness dimension (here, the thickness dimension is 22 mm). On the other hand, the width dimension is 50 mm.) A bearing portion 29 is formed at one end of the moving member 26 (on the front plate 17 side) so as to pivotally support the rotating member 27 by cutting out the central portion. And the engagement receiving part 28 with which the rod 35 of the 2nd locking part 16 engages / disengages is comprised by the space between the rotation member 27 and the bearing part 29. FIG. A rectangular plate-shaped collar portion 30 is attached to the other end portion (back plate 19 side) of the moving member 26. The collar portion 30 protrudes only above and below the moving member 26, and both sides are flush with both side surfaces of the moving member 26. The moving member 26 moves between the locked position where the collar portion 30 contacts the back plate 19 by moving outward and the standby position where the moving member 26 moves inward and is regulated by the grip portion 31 of the rotating member 27 described later. It is possible to move with.

  As shown in FIG. 2B, the rotating member 27 includes a grip portion 31 and an attachment portion 32. The grip portion 31 is formed in a stepped shape having a front surface formed by a curved surface having an arcuate cross section and having a step portion 31a on the back surface side. The attachment portion 32 is continuous with the back surface of the grip portion 31, is positioned between the bearing portions 29 of the moving member 26, and is rotatably supported. The attachment portion 32 is formed to have the same thickness as that of the moving member 26. When the moving member 26 is located at the standby position where the moving member 26 is retracted, the rotating member 27 is freely rotatable and is rotated to a hanging position along the surface plate 17 by its own weight. Further, when the moving member 26 is positioned at the locked position where the moving member 26 is advanced, the rotating member 27 enters the guide hole 21 and is supported by the auxiliary wall 24 on the lower surface as shown in FIG. Rotate to horizontal position.

  The second locking portion 16 is provided with a key cylinder 33 that can be operated with keys and a thumb turn lock 34 that can be operated with fingers on the casing 16a. The casing 16a is fixed to the support plate 25 of the apparatus main body 14 with screws. Has been. Then, by rotating the key or thumb turn to the lock position or the unlock position, the rod 35 protrudes and retracts from the casing and engages / disengages with the engagement hole 28 of the moving member 26. In addition, the 2nd locking part 16 can use what is marketed.

  The locking device 13 having the above-described configuration is assembled as follows, and is attached to the sleeve portion 3 constituting the doorway 2.

  The casing of the second locking portion 16 is fixed to the support plate 25 of the intermediate plate 18 with screws. Then, the front plate 17 is fixed with screws to the intermediate plate 18 to obtain a primary assembly. At this time, the key insertion side of the key cylinder 33 is positioned in the circular hole of the front plate 17, and the rear end side of the key cylinder 33 is positioned in the circular hole of the intermediate plate 18.

  Subsequently, the intermediate plate 18 side of the primary assembly is supported from the outside by being inserted into the attachment port 12 formed in the sleeve portion 3 of the doorway 2. The intermediate plate 18 has a sufficient length of the portion constituting the bottom surface of the groove 20. Therefore, even if the primary assembly is simply inserted into the attachment port 12, it does not drop off easily, and a stable support state can be obtained. Further, the moving member 26 of the first locking part 15 to which the collar part 30 is not attached is inserted into the guide hole 21 of the apparatus main body 14.

  Thereafter, the back plate 19 is fixed to the intermediate plate 18 with screws by moving to the inside of the sleeve portion 3. Thereby, the groove part 20 is formed between the intermediate | middle board 18 and the back board 19, and the fixing to the sleeve part 3 is completed because the opening edge part of the attachment port 12 is located there. Further, the collar portion 30 is fixed to the end surface of the moving member 26 protruding from the back plate 19 with screws. As a result, the first locking part 15 cannot be detached from the apparatus main body 14.

  As described above, the locking device 13 can be easily attached to the existing sliding door 1 simply by forming the attachment opening 12 in the sleeve portion, without having to perform any processing on the sliding door 1. it can.

  Next, the operation of the locking device 13 configured as described above will be described.

  In a state before the locking device 13 is locked, the moving member 26 of the first locking portion 15 protrudes outward (standby position), and the rotating member 27 is positioned at the hanging position. For this reason, the rotating member 27 is in a state in which the tip portion protrudes downward with respect to the guide portion 23 protruding from the front plate 17, and it can be determined that it is not locked at a glance.

  When locking the locking device 13, the sliding door 1 is slid and moved to a closed position where the doorway 2 is closed. And the holding part 31 of the rotation member 27 of the 1st locking part 15 is hold | gripped, it rotates in a horizontal direction, and it pushes in with the movement member 26 (locking position). The turning position of the rotating member 27 is limited when the step portion 31 a on the back side of the grip portion 31 abuts on the step portion 23 a formed on the opposing surface of the guide portion 23. In this state, as shown to Fig.2 (a), the rotation member 27 and the guide part 23 comprise the protrusion structure body united. For this reason, it can grasp | ascertain at a glance that the moving member 26 moved to the locking position correctly. The moving member 26 moves forward while elastically deforming the elastic member 11 provided at the door bottom of the sliding door 1, and presses the elastic member 11 to the side surface thereof. Thereby, the sliding door 1 press-contacts the door stop 9 of the door end to the door receiving part 5 provided in the entrance / exit 2, and the sliding door 1 is maintained in a closed state.

  Here, when the key is inserted into the key cylinder and rotated to the lock position, the rod 35 protrudes and engages with the engagement receiving portion 28 of the moving member 26, and locking is completed. In this locked state, the sliding door 1 is prevented from moving in the opening direction by the moving member 26 instead of the rod 35 of the second locking device.

  According to the locking device 13 thus locked, the moving member 26 is formed with a sufficiently large width dimension as compared with the thickness dimension as described above. Accordingly, the sliding door 1 is robust and has sufficient strength as a configuration for positioning the sliding door 1 in the closed position. Further, since a commercially available cylinder lock can be used for the key operated part, the reliability of the lock can be made according to the performance of the cylinder lock. For example, when it is used as a school classroom door, the same key can be used to lock and unlock the school building and the classroom with the same key cylinder 33 as the key cylinder 33. Further, it is possible to determine that the rotating member 27 is positioned along the guide portion 23 protruding from the front plate 17 and is located at the locking position at a glance. And since the protrusion part of the guide part 23 and the rotation member 27 is comprised by the curved surface of cross-sectional arc shape, it is safe even if a person collides.

  When unlocking the locking device 13, from the outside, a key is inserted into the key cylinder 33 and rotated to the unlock position. Then, the rod 35 is detached from the engagement hole 28 of the moving member 26 by a key operation, and the moving member 26 is brought into a movable state. Therefore, the movable member 26 is moved from the locked position shown in FIG. 2A to the standby position shown in FIG. On the other hand, by manually rotating the thumb turn lock 34 to the unlock position from the inside, the rod 35 is disengaged from the engagement hole 28 of the moving member 26 and the moving member 26 is made movable. Then, by directly pressing the moving member 26, the moving member 26 is moved from the locking position shown in FIG. 2 (a) to the standby position shown in FIG. 2 (b). In this way, the state in which the moving member 26 positions the sliding door 1 in the closed position can be released.

  In addition, this invention is not limited to the structure described in the said embodiment, A various change is possible.

  For example, in the above-described embodiment, the case where the locking device 13 is employed as a single sliding door has been described. In this case, the locking device 13 may be attached to one sliding door 1.

  Moreover, in the said embodiment, although the elastic member 11 was provided in the door butt of the sliding door 1, the elasticity of the door stop 9 can be utilized instead of this elastic member 11, and it is set only as the elastic member 11. It is also possible.

  In the above-described embodiment, the moving member 26 is moved to the standby position while elastically deforming the elastic member 11. However, the moving member 26 is formed with an inclined surface that is slidably in contact with the door butt, and the sliding door is formed by the inclined surface. 1 may be pressed to the closed position. That is, the moving member 26 is formed with an inclined surface that gradually approaches the door bottom of the sliding door 1 in the closed position as it goes from the front end to the rear end. Thereby, by moving the moving member 26 from the standby position to the locking position, the inclined surface gradually comes into sliding contact with the door butt of the sliding door 1, and the sliding door 1 can be pressed toward the closed position. As a result, the locking operation by the first locking unit 15 can be performed smoothly.

DESCRIPTION OF SYMBOLS 1 ... Sliding door 2 ... Entrance / exit 3 ... Sleeve part 4 ... Hanger rail 5 ... Door contact receiving part 6 ... Roller 7 ... Window part 8 ... Ventilation part 9 ... Door contact 10 ... Pull handle 11 ... Elastic member 12 ... Mounting port 13 ... Locking device DESCRIPTION OF SYMBOLS 14 ... Apparatus main body 15 ... 1st locking part 16 ... 2nd locking part 17 ... Front board 18 ... Intermediate | middle board 19 ... Back board 20 ... Groove part 21 ... Guide hole 22 ... Communication hole 23 ... Guide part 24 ... Auxiliary wall 25 ... Support Plate 26 ... Moving member 27 ... Rotating member 28 ... Engagement hole (engagement receiving part)
DESCRIPTION OF SYMBOLS 29 ... Bearing part 30 ... Gutter part 31 ... Grip part 32 ... Mounting part 33 ... Key cylinder 34 ... Thumb turn lock

Claims (5)

The device body;
It is attached to the apparatus main body, and protrudes from the apparatus main body and comes into contact with the door butt of the sliding door so that it can move to a locking position that prevents the sliding door from moving and a standby position that allows the sliding door to move, and an engagement receiving portion. A first locking part having a moving member formed with
A key cylinder that is attached to the apparatus main body and exposes a key hole from the apparatus main body, and an engagement receiving portion formed on the moving member of the first locking portion within the apparatus main body by operating a key on the key cylinder. A second locking portion having a lock position for engaging and positioning the moving member at the lock position, and a rod capable of reciprocating between the unlock position and the unlock position;
A locking device comprising:   The first locking portion is provided on the moving member so as to be rotatable, and when the moving member is moved to the standby position, the first locking portion is suspended along the surface of the sliding door to move the moving member to the locking position. The locking device according to claim 1, further comprising a rotating member that can be partly inserted into the apparatus main body.   The apparatus main body is provided with guide portions at predetermined intervals on both sides of a position where a part of the rotating member appears, and the guide portion is positioned along the moving member when the moving member is moved to the locking position. The locking device according to claim 2, wherein a projecting structure is formed integrally with the rotating member, and the rotating member is protruded downward when the moving member is moved to the standby position.   The said sliding door was equipped with the elastic member which press-contacts the door butt to the moving member of the 1st locking part located in a locking position in a closed position. Locking device.   The locking device according to claim 4, wherein the elastic member is provided at a door butt of the sliding door and is directly pressed against the moving member.

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