Locking device

Abstract

To provide a locking device that can increase the degree of freedom in the arrangement position of the locking device provided on a door having a handle. [Solution] The door includes an operating part 4 provided on at least one side in the thickness direction of the door, an engaging part 5 that fixes the door in a closed state by engaging with a stationary engaged part 7 provided above and / or below the door when the door is in a closed state, and a moving mechanism 6 that moves the engaging part vertically in response to operation of the operating part, thereby engaging and disengaging the engaging part with the engaged part.

Description

[Technical Field]

[0001] The present invention relates to a locking device. [Background technology]

[0002] Conventionally, a door with a handle (for example, a sliding door) is sometimes installed in an opening in a wall. When a locking device is installed on a door with a handle, the locking device is often installed near the handle, and an example of such a locking device is disclosed in Patent Document 1. The locking device described in Patent Document 1 is configured to be able to engage with and disengage from a lock receiving recess provided on the edge of the opening in the wall when the door is in the closed position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-163294 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the locking device described in Patent Document 1 is designed to be installed near the handle, and is not intended to be installed in a location other than near the handle. Therefore, the locking device described in Patent Document 1 has little freedom in its installation location, making it difficult to freely set the installation location according to the needs of users, etc.

[0005] Therefore, in consideration of the above problem, the present invention aims to provide a locking device that can increase the degree of freedom in the placement position of a locking device installed on a door with a handle. [Means for solving the problem]

[0006] The locking device of the present invention is a locking device installed on a door having a handle, and is equipped with an operating part installed on at least one side of the door in the thickness direction, an engaging part that fixes the door in a closed state by engaging with a stationary engaged part installed above and / or below the door when the door is in a closed state, and a moving mechanism that moves the engaging part in an up and down direction in response to operation of the operating part, thereby engaging and disengaging the engaging part from the engaged part. [Effects of the Invention]

[0007] According to the present invention, it is possible to increase the degree of freedom in the placement position of a locking device installed on a door with a handle. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing an example of a door (sliding door) equipped with a locking device according to an embodiment of the present invention. [Figure 2] 2 is an enlarged view of the lock device in FIG. 1, showing the lock device in a locked state as viewed from the operating unit side. FIG. [Figure 3] 2 is an enlarged view of the lock device in FIG. 1, showing the lock device in a locked state as viewed from the opposite side to the operating unit. FIG. [Figure 4] 2 is an enlarged view of the lock device in FIG. 1, showing the lock device in an unlocked state as viewed from the operating unit side. FIG. [Figure 5] 2 is an enlarged view of the lock device in FIG. 1, showing the lock device in an unlocked state as viewed from the opposite side to the operating unit. FIG. [Figure 6] 1 is a plan view schematically showing an example of a door (folding door) equipped with a locking device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention will be described in detail below with reference to the accompanying drawings, in which: FIG. 1 is a block diagram of a locking device according to an embodiment of the present invention; FIG. 2 is a block diagram of a locking device according to an embodiment of the present invention; FIG. 3 is a block diagram of a locking device according to an embodiment of the present invention;

[0010] As shown in FIG. 1, the locking device 1 according to this embodiment is provided on a door 2 having a handle 23. FIG. 1 shows the door 2 and the locking device 1 as viewed from the exterior side (e.g., outside the restroom). The "door" in this embodiment is not particularly limited to a particular type as long as it has the handle 23. In the example shown in FIG. 1, the door 2 is a sliding door, and more specifically, an offset sliding door that is provided on the exterior side (e.g., outside the restroom) of an opening W1 in a wall W. The door 2 may also be an inset sliding door that is provided on the interior side (e.g., inside the restroom) of the opening W1 in the wall W. The door 2 in this embodiment may also be a sliding door provided within the opening W1 in the wall W. The door 2 in this embodiment may also be a type of door other than a sliding door, such as a folding door with a handle (see FIG. 6).

[0011] In this specification and drawings, direction D1 represents the opening and closing direction of the door 2 (hereinafter also referred to as opening and closing direction D1), direction D2 represents the up-down direction (hereinafter also referred to as up-down direction D2), and direction D3 represents the thickness direction (hereinafter also referred to as thickness direction D3) of the door 2. The opening and closing direction D1, the up-down direction D2, and the thickness direction D3 are perpendicular to each other.

[0012] The structure of the door 2 is not particularly limited as long as it can be equipped with the locking device 1. In the example shown in Fig. 1, the door 2 includes a door body 21, an opening / closing guide part 22, and a pull tab 23. In Figs. 2 to 5, the door body 21 is indicated by a two-dot chain line.

[0013] The door body 21 is a plate-like member that opens and closes an opening W1 in a wall W, which is an entrance and exit to a room (for example, a restroom). In the example shown in Fig. 1, the door body 21 is formed in a rectangular shape.

[0014] The pull tab 23 is a handle that can be placed and pulled when opening or closing the door body 21. The pull tab 23 is provided on the door tip side in the opening and closing direction D1 of the door body 21. The pull tab 23 is also provided on both sides (indoor and outdoor sides) of the door 2 in the thickness direction D3.

[0015] The opening / closing guide part 22 is a member that guides the door body 21 in the opening / closing direction D1 along the wall W when the door body 21 moves. The movement of the door body 21 in the opening / closing direction D1 opens and closes the opening W1 in the wall W. In the example shown in FIG. 1, the opening / closing guide part 22 includes a guide rail 221 that guides the door body 21 in the opening / closing direction D1, and a door roller 222 that is guided in the opening / closing direction D1 by the guide rail 221. In the example shown in FIG. 1, the guide rail 221 is provided on the surface of the wall W facing outside the room. The door roller 222 is provided on the surface of the door body 21 facing inside the room.

[0016] 2 to 5, the locking device 1 according to this embodiment includes an operating unit 4, an engaging unit 5, and a moving mechanism 6. FIGS. 2 and 4 show the locking device 1 in FIG. 1 as viewed from the inside of the room (for example, from the inside of a restroom).

[0017] The operating unit 4 is a member provided on at least one side in the thickness direction D3 of the door 2 (see FIGS. 2 and 3). Specifically, the operating unit 4 is provided on at least one side in the thickness direction D3 of the door main body 21. In the example shown in FIGS. 2 and 3, the operating unit 4 is provided on one side (the room side) in the thickness direction D3 of the door main body 21. The operating unit 4 is operated by a user. The operating unit 4 is configured to be able to engage and disengage (lock and unlock) the engaging portion 5 and the engaged portion 7 described below via the moving mechanism 6 through user operation. The configuration of the operating unit 4 is not particularly limited as long as it is able to engage and disengage the engaging portion 5 and the engaged portion 7 in response to user operation. In the example shown in FIG. 2, the operating unit 4 is configured to be able to be rotated by a user. Specifically, the operating unit 4 is a thumb turn that can be used to lock and unlock the locking device 1. In the example shown in Figure 2, the operating unit 4 includes a gripping portion 41 that can be rotated, a rotation shaft 42 that is provided at the rotation center of the gripping portion 41, and a support portion 43 that rotatably supports the rotation shaft 42.

[0018] For example, by rotating the grip portion 41 in a first direction D4 (see FIGS. 2 and 3), the lock device 1 can transition from a locked state (see FIGS. 2 and 3) to an unlocked state (see FIGS. 4 and 5). Specifically, by rotating the grip portion 41 in the first direction D4, the movement mechanism 6 and the engaging portion 5 move in the vertical direction D2 (specifically, upward), and the engaging portion 5 comes off (disengages) from the engaged portion 7, thereby transitioning from the locked state to the unlocked state.

[0019] Furthermore, by rotating the grip portion 41, for example, in the second direction D5 (see FIGS. 4 and 5), the locking device 1 can transition from the unlocked state (see FIGS. 4 and 5) to the locked state (see FIGS. 2 and 3). Specifically, by rotating the grip portion 41 in the second direction D5, the moving mechanism 6 and the engaging portion 5 move in the vertical direction D2 (specifically, downward), and the engaging portion 5 is inserted into (engaged with) the engaged portion 7, thereby transitioning from the unlocked state to the locked state.

[0020] In the example shown in FIG. 1, the locking device 1 is provided with a display unit 8 on the other side (outside the room) in the thickness direction D3. For convenience, the display unit 8 is not shown in FIGS. 3 and 5. The display unit 8 is configured to display whether the locking device 1 is in a locked state (whether it is locked or unlocked). The display unit 8 is configured to display whether the locking device 1 is in a locked state or not in response to the operation of the operating unit 4. The locking device 1 is also provided with an emergency unlocking unit (not shown) on the other side (outside the room) in the thickness direction D3. The emergency unlocking unit is configured to be unlocked by rotating a coin or the like from the outside of the room when an abnormality occurs inside the room.

[0021] The engaging portion 5 is a member that fixes the door 2 in the closed state by engaging with the engaged portion 7 in a stationary state provided above and / or below the door 2 when the door 2 is in the closed state (see FIGS. 2 and 3). Specifically, the engaging portion 5 is a member that fixes the door main body 21 in the closed state by engaging with the engaged portion 7 in a stationary state provided above and / or below the door main body 21 when the door main body 21 is in the closed state. In the example shown in FIGS. 1 to 3, the engaging portion 5 is a member that fixes the door main body 21 in the closed state by engaging with the engaged portion 7 in a stationary state provided below the door main body 21 when the door main body 21 is in the closed state. In this specification, the "closed state" means a state in which the door 2 (specifically, the door main body 21) closes the opening W1 of the wall W and is stopped (see FIG. 1).

[0022] The configuration of the engaging portion 5 is not particularly limited as long as it can be engaged with and disengaged from the engaged portion 7 in a stationary state. In the example shown in FIGS. 2 to 5, the engaging portion 5 is a rod-shaped member that can be engaged with and disengaged from the engaged portion 7 in a stationary state. The engaging portion 5 is provided in a portion of the moving mechanism 6 that moves in the up-down direction D2. In the example shown in FIGS. 2 to 5, the engaging portion 5 is provided at the tip of the third link portion 63.

[0023] The engaged portion 7 is not particularly limited in its manner as long as it is in a stationary state and can be engaged with and disengaged from the engaging portion 5. In this specification, "disengageable" means that it can be engaged and disengaged in the opening and closing direction D1. When the engaging portion 5 and the engaged portion 7 engage with each other in the opening and closing direction D1, movement of the door 2 in the opening and closing direction D1 can be prevented. Furthermore, when the engaging portion 5 and the engaged portion 7 are disengaged from each other in the opening and closing direction D1, movement of the door 2 in the opening and closing direction D1 becomes possible. When the engaging portion 5 and the engaged portion 7 are engaged with each other, the engaging portion 5 can move in the vertical direction D2 relative to the engaged portion 7. When the engaging portion 5 moves in the vertical direction D2 relative to the engaged portion 7, the engaging portion 5 can be engaged with and disengaged from the engaged portion 7.

[0024] In this embodiment, the engaged portion 7 is a hole provided above and / or below the door 2. In the example shown in Figs. 2 to 5, the engaged portion 7 is a hole provided below the door 2. The hole extends in the up-down direction D2. When the hole is provided above the door 2, the lower end is open and the engaging portion 5 can be inserted through the opening. When the hole is provided below the door 2, the upper end is open and the engaging portion 5 can be inserted through the opening 71 (see Figs. 2 and 3).

[0025] More specifically, the engaged portion 7 is a hole (not shown) in a stationary member provided above the door 2 (specifically, the door main body 21) and / or a hole in a stationary member provided below the door 2 (specifically, the door main body 21). The stationary member may be, for example, a ceiling (not shown) provided above the door 2 and / or a floor F provided below the door 2. In FIGS. 2 to 5, the floor F is indicated by a two-dot chain line. In this case, the engaged portion 7 is a hole (not shown) formed in the ceiling and / or a hole (see FIGS. 2 and 3) formed in the floor F. The hole, which is the engaged portion 7, has an inner wall surface that can engage with the engaging portion 5. That is, when the engaging portion 5 is inserted into the hole, the surface of the engaging portion 5 engages with the inner wall surface of the hole in the opening / closing direction D1 (locking). Furthermore, when the engaging portion 5 is pulled out of the hole, the engagement between the surface of the engaging portion 5 and the inner wall surface of the hole in the opening / closing direction D1 is released (unlocked). In the example shown in Figures 2 and 3, the engaged portion 7 is a hole formed in the floor F. The engaged portion 7 may be, for example, a hole formed by cutting the floor F, or a hole formed by cutting and having the inner wall surface reinforced by fitting a tubular reinforcing member (for example, a hard member such as metal) into the hole. It is preferable that the ceiling and floor F can be processed, such as by cutting, to form the hole.

[0026] The moving mechanism 6 is configured to move the engaging portion 5 in the vertical direction D2 in response to the operation of the operating unit 4, thereby engaging and disengaging the engaging portion 5 with the engaged portion 7 (see FIGS. 2 to 5). The moving mechanism 6 converts the operation of the operating unit 4 (for example, a rotational operation of the operating unit 4) into an action of engaging and disengaging the engaging portion 5 with the engaged portion 7. The form of the moving mechanism 6 is not particularly limited as long as it can convert the operation of the operating unit 4 into an action of engaging and disengaging the engaging portion 5 with the engaged portion 7. In the example shown in FIGS. 2 to 5, the moving mechanism 6 is a link mechanism that converts the operation of the operating unit 4 (specifically, the rotational movement of the operating unit 4) into a linear movement of the engaging portion 5 in the vertical direction D2. For convenience, an intermediate portion of the moving mechanism 6 is not shown in FIGS. 2 to 5.

[0027] In the example shown in FIGS. 3 and 5, the movement mechanism 6 includes a first link portion 61 having one end fixed to the rotation shaft 42 of the operation unit 4, a second link portion 62 having one end rotatably connected to the other end of the first link portion 61, and a third link portion 63 having one end rotatably connected to the other end of the second link portion 62. The other end of the third link portion 63 is connected to the engagement portion 5. The third link portion 63 is restricted from moving in the opening / closing direction D1 by a vertical guide portion 211 provided on the door main body 21, and is only allowed to move in the vertical direction D2. In this embodiment, the vertical guide portion 211 is a cylindrical member that supports the outer circumferential surface of the third link portion 63 so that it can slide in the vertical direction D2. In the example shown in FIGS. 2 to 5, the vertical guide portion 211 is provided at the lower end of the door main body 21.

[0028] 2 to 5, the third link portion 63 has a length adjustment portion 631. The length adjustment portion 631 can be formed, for example, by forming the third link portion 63 from two members, one of which has a male thread portion at an end and the other has a female thread portion at an end, and joining the members together by screwing them together so that the length can be adjusted. By providing the length adjustment portion 631, the distance between the engaging portion 5 and the engaged portion 7 can be adjusted so that the engaging portion 5 can be appropriately engaged with and disengaged from the engaged portion 7.

[0029] In the movement mechanism 6 shown in FIGS. 3 and 5, the first link portion 61 rotates around one end (the portion connected to the rotation shaft 42) in response to the rotation of the operating unit 4. The other end of the first link portion 61 rotates around the one end of the first link portion 61, tracing an arc trajectory. One end of the second link portion 62 rotates together with the other end of the first link portion 61. The other end of the second link portion 62 moves in the vertical direction D2 on a straight line L1 extending from the vertical guide portion 211 in the vertical direction D2. When the one end of the second link portion 62 rotates upward together with the other end of the first link portion 61 by the rotation of the operating unit 4 in the first direction D4 (see the change from FIG. 3 to FIG. 5), the other end of the second link portion 62 moves upward on the straight line L1 (see FIG. 5). As the other end of the second link portion 62 moves upward, the third link portion 63 and the engaging portion 5 move upward. As a result, the engaging portion 5 is pulled out from the engaged portion 7, and the engagement between the engaging portion 5 and the engaged portion 7 is released (the lock device 1 is unlocked).

[0030] On the other hand, when one end of the second link portion 62 rotates downward together with the other end of the first link portion 61 by rotating the operating portion 4 in the second direction D5 from the state shown in Figures 4 and 5 (see the change from Figure 5 to Figure 3), the other end of the second link portion 62 moves downward on the straight line L1. As the other end of the second link portion 62 moves downward, the third link portion 63 and the engaging portion 5 move downward (see Figure 3). As a result, the engaging portion 5 is inserted into the engaged portion 7, and the engaging portion 5 and the engaged portion 7 engage with each other (the locking device 1 is locked).

[0031] The locking device 1 according to this embodiment may further include a retaining portion 9 that retains the state in which the engaging portion 5 and the engaged portion 7 are engaged with each other, and the state in which the engaging portion 5 and the engaged portion 7 are disengaged from each other (see FIGS. 2 to 5). The retaining portion 9 is configured to prevent the locking device 1 from unintentionally transitioning from a locked state to an unlocked state, or from an unlocked state to a locked state. If the retaining portion 9 were not provided, when the locking device 1 is in the unlocked state (see FIG. 5), the weight of the moving mechanism 6 may cause the moving mechanism 6 to unintentionally descend, and the engaging portion 5 may engage with the engaged portion 7 (transition to the locked state). 3 and 5, if the moving mechanism 6 is configured so that the position of the moving mechanism 6 in the locked state is higher than the position of the moving mechanism 6 in the unlocked state, the moving mechanism 6 may unintentionally descend due to its own weight in the locked state, causing the engagement between the engaging portion 5 and the engaged portion 7 to be released (transition to the unlocked state). In contrast, if the holding portion 9 is provided, it is possible to prevent such inconvenience from occurring.

[0032] The configuration of the holding unit 9 is not particularly limited as long as it can prevent the movement mechanism 6 from unintentionally descending due to its own weight. In this embodiment, the holding unit 9 can be configured to suppress the unintentional descent of the movement mechanism 6 by, for example, the elastic force of an elastic member such as a spring. In the example shown in FIGS. 3 and 5 , the holding unit 9 includes a cam (specifically, a base 611 of the first link unit 61; hereinafter, also referred to as cam 611) fixed to the rotation shaft 42 and a spring member (specifically, a leaf spring) 91 that slides against the cam surface of the cam 611 and elastically presses the cam surface. The spring member 91 is provided on the support unit 43. The cam surface of the cam 611 has a first holding surface 61 a and a second holding surface 61 b ​​that receive an elastic pressing force from the spring member 91 to maintain the posture (rotational posture) of the cam 611 in a predetermined state in the rotation directions (first direction D4 and second direction D5). Specifically, in a state where the first holding surface 61a is pressed by the spring member 91 (see FIG. 5), the rotational posture of the cam 611 is maintained such that the engaging portion 5 and the engaged portion 7 are disengaged (the moving mechanism 6 has pulled up the engaging portion 5). On the other hand, in a state where the second holding surface 61b is pressed by the spring member 91 (see FIG. 3), the rotational posture of the cam 611 is maintained such that the engaging portion 5 and the engaged portion 7 are engaged (the moving mechanism 6 has lowered the engaging portion 5).

[0033] In the example shown in FIGS. 3 and 5 , the first and second holding surfaces 61a and 61b have a shape, such as a flat surface, that allows for parallel surface contact with the pressing surface of the spring member 91. This surface contact facilitates stabilizing the orientation of the first and second holding surfaces 61a and 61b relative to the pressing surface of the spring member 91, thereby facilitating the maintenance of the rotational orientation of the cam 611. The force that maintains the rotational orientation of the cam 611 (hereinafter also referred to as the orientation maintenance force) is generated by the elastic force of the spring member 91. The orientation maintenance force is greater than gravity acting on the moving mechanism 6 and the engaging portion 5. Therefore, the holding portion 9 can prevent the moving mechanism 6 from unintentionally descending due to its own weight. The lock device 1 can be locked and unlocked by rotating the operating portion 4 against the elastic force of the spring member 91. The orientation maintenance force is set to a level that does not interfere with the operation of the operating portion 4. The posture holding force can be adjusted by changing the elastic force of the spring member 91. Specifically, for example, if the spring member 91 is a leaf spring, the posture holding force can be adjusted by changing the thickness of the leaf spring.

[0034] The holding unit is not limited to the above example. For example, a holding unit 9A indicated by a two-dot chain line in FIGS. 3 and 5 can be provided instead of or in addition to the holding unit 9 described above. The holding unit 9A can be a friction member that generates a friction force between the holding unit 9A and the moving mechanism 6 so as to prevent the moving mechanism 6 from descending due to its own weight. In the example shown in FIGS. 2 to 5, the holding unit 9A is provided in contact with a member (specifically, the third link unit 63) that moves in the vertical direction D2 in the moving mechanism 6. The friction force generated between the holding unit 9A and the moving mechanism 6 is set to a level that does not interfere with the operation of the operating unit 4.

[0035] Next, a method for attaching the locking device 1 according to this embodiment to a sliding door 2 (specifically, the door body 21) and an example of a method for installing the sliding door 2 equipped with the locking device 1 will be described with reference to the drawings. The following description will be given taking as an example a case where the installation of the locking device 1 to the sliding door 2 (specifically, an offset sliding door) is performed at a factory or construction site, and the sliding door 2 equipped with the locking device 1 is placed outside the opening W1 in the wall W. The door body 21 includes a frame (not shown) assembled into a rectangular shape by an upper frame, a lower frame, and left and right vertical frames, and rectangular plates (not shown) provided on the interior and exterior surfaces of the frame. The door body 21 has an internal cavity (not shown) capable of accommodating the locking device 1. The door body 21 is also equipped with a door roller 222. The door body 21 can be machined, for example, to form an opening. The door body 21 is made of a material (e.g., wood) that can be machined, for example, to form an opening. The locking device 1 also has an engaging portion 5 that engages with a stationary engaged portion 7 provided below the door 2 to fix the door 2 in a closed state.

[0036] Furthermore, the user is to determine in advance the mounting position of the operation unit 4 on the door body 21 according to the ease of the locking and unlocking operations. The mounting position of the operation unit 4 can be set at any position on the plate material of the door body 21. For example, the mounting position of the operation unit 4 can be freely set in the opening and closing direction D1. For example, the mounting position of the operation unit 4 may be close to the handle 23 (close to the door end) or may be far away from the handle 23 (for example, the center of the door body 21 in the opening and closing direction D1 or a position close to the door tail). Furthermore, the mounting position of the operation unit 4 can also be freely set in the vertical direction D2. For example, the mounting position of the operation unit 4 may be the center of the door body 21 in the vertical direction D2, or may be the upper part of the door body 21, or may be the lower part of the door body 21.

[0037] An example of a method for attaching the lock device 1 to the door main body 21 will be described below. First, an opening (not shown) for attaching the operating unit 4 is formed in the plate material on the indoor side of the door main body 21 (see FIG. 2) at a position according to the user's request. This opening is an opening for inserting the rotating shaft 42 of the operating unit 4, etc. This opening is formed, for example, by processing such as cutting. Furthermore, openings for arranging the display unit 8 and the emergency unlocking unit are formed in the plate material on the outdoor side at positions according to the user's request.

[0038] Next, a through hole into which the engaging part 5 can be inserted is formed below the opening in the lower frame (not shown) of the door main body 21. The vertical guide part 211 is attached at a position corresponding to this through hole (see Figures 2 and 3).

[0039] Next, the support part 43 of the operation part 4 is attached to the plate material. This attachment can be performed using any fixing member such as a wood screw. When attaching the support part 43 to the plate material, the rotation shaft 42 of the operation part 4 is inserted through the opening.

[0040] Next, the moving mechanism 6 is placed in the internal cavity of the door body 21. During this placement, the engaging portion 5 is inserted into the vertical guide portion 211 and the through-hole (see Figures 2 and 3). This placement can be performed, for example, before attaching the plate material to the frame body. After this placement, the plate material can be attached to the frame body. In this way, the locking device 1 can be attached to the door body 21.

[0041] Next, we will explain an example of a method for installing the door 2 (sliding door) equipped with the lock device 1. First, as shown in Fig. 1, the opening / closing guide part 22 is attached to the surface of the wall W on the outdoor side.

[0042] Next, the engaged portion 7 is provided on the floor F. Specifically, the engaged portion 7 is provided at a position where the engaging portion 5 can be engaged and disengaged when the door 2 is in the closed state. Specifically, a hole is formed by cutting the floor F, and the engaged portion 7 is formed by fitting a cylindrical reinforcing member into the hole. This completes the installation work of the door 2 (sliding door) equipped with the locking device 1.

[0043] 1 to 5 illustrate the case where the locking device 1 is attached to a sliding door (door 2), but this is not limiting. As mentioned above, the locking device 1 may also be attached to a folding door (door 2) (see FIG. 6). FIG. 6 schematically illustrates, in plan view, a state in which the folding door (door 2) closes the opening W1 in the wall W (shown by a solid line) and a state in which the folding door bends at the hinge portion 24 to open the opening W1 in the wall W (shown by a two-dot chain line). The engaged portion (not shown) is provided above or below the locking device 1. The position at which the locking device 1 is provided on the folding door (door 2) is not particularly limited, but as shown in FIG. 6, it is preferable that the locking device 1 be provided near the hinge portion 24 in the opening / closing direction D1. By providing the locking device 1 near the hinge portion 24 in the opening / closing direction D1, the movement distance of the engaging portion when the folding door (door 2) folds (bends) is greater in the thickness direction D3, which is perpendicular to the opening / closing direction D1. Therefore, movement of the folding door (door 2) in the thickness direction D3 can be more tightly restricted compared to when the locking device 1 is provided at a position far away from the hinge portion 24 in the opening / closing direction D1. This allows the locking device 1 to lock more appropriately.

[0044] As described above, with the locking device 1 according to this embodiment, the mounting position of the operating unit 4 can be set at any position on the plate of the door body 21. Specifically, the mounting position of the operating unit 4 relative to the door body 21 can be freely set in the opening / closing direction D1 and the up-down direction D2. Furthermore, the position of the engaged portion 7, with which the engaging portion 5 engages and disengages, can be freely set according to the position of the operating unit 4. This increases the degree of freedom in the placement position of the locking device 1 provided on a door 2 having a handle 23. This makes it possible to provide a locking device 1 that allows the operating unit 4 to be placed in an appropriate position according to the user's needs, making locking and unlocking operations easier. This locking device 1 allows the locking device 1 to be easily placed in an appropriate position according to the user's preferences, for example, during home renovation work. [Explanation of symbols]

[0045] 1 locking device 2 units 21 Door body 211 Upper and lower guide section 22 Opening and closing guide 221 Guide Rail 222 Door Roller 23 Pull handle 24 Hinge part 4 Control section 41 Gripping part 42 Rotation axis 43 Support part 5 Engagement part 6 Moving mechanism 61 First link 611 Base of first link (cam) 61a first holding surface 61b Second holding surface 62 Second Link 63 Third Link 631 Length adjustment part 7 Engaged part 8 Display 9 Holding part 91 Elastic member 9A holding part D1 Door opening and closing direction D2 Vertical direction D3 Door thickness direction D4 First Direction D5 Second Direction F floor W wall W1 Wall Opening

Claims

1. A locking device provided on a door with a handle, An operating unit provided on at least one side in the thickness direction of the door; An engaging portion that fixes the door in a closed state by engaging with a stationary engaged portion provided above and / or below the door when the door is in a closed state; A locking device comprising: a moving mechanism that moves the engaging portion in an up and down direction in response to operation of the operating portion, thereby engaging and disengaging the engaging portion with respect to the engaged portion.

2. 2. The locking device according to claim 1, wherein the door is an outset sliding door provided outside the wall opening.

3. The locking device of claim 1 , wherein the door is a folding door.

4. The lock device according to claim 1 , further comprising a holding portion that holds the engaging portion and the engaged portion in an engaged state and the engaging portion and the engaged portion in a disengaged state.

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