Door and window locks

Abstract

To provide a lock for a fitting which is used for a door of a private room used in a toilet or the like, and can open the door by an operation from the outside even when the door is locked and cannot be opened.SOLUTION: A lock for a fitting is configured to include a lock seat 1 having a rotating shaft 11 projecting from one surface 1a and a through hole 12, a lock base 2 having an engaging hole 21 communicating with the through hole 12 and supporting the rotating shaft 11, an operating section 3 movable in a substantially horizontal direction along the lock base 2 and having a notch 31 at either the lower part or the upper part of the one end side, a receiving section 4 which is locked by engaging with one end side of the operating section 3 and unlocked by disengaging therefrom, and an engaging section 5 having, at one end side thereof, a portion 1 inserted through the through hole 12 and the engaging hole 21 and capable of being engaged at an edge 22 of the engaging hole 21 and capable of being disengaged from the edge 22 of the engaging hole 21 by rotation, and having, at the other end side thereof, a connecting section 52 capable of being connected with the tip of an external member T.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] To provide a door lock that can be attached to the door of a private room used in a toilet or the like, and that can open the door by operating it from outside even if the door is locked and cannot be opened because the private room is in use. [Background technology]

[0002] Conventionally, various types of fitting locks have been known that are attached to the doors of private rooms used in toilets, etc., and that, even if the door is locked and cannot be opened because the private room is in use, in an emergency situation where the occupant is unable to open the door themselves due to illness or the like, the door can be opened by another person operating it from outside, thereby enabling the occupant of the private room to be rescued, etc.

[0003] As such a fitting lock, for example, Patent Document 1 discloses an invention relating to a fitting lock that includes a locking device 1 fixed to the inner surface of a door D, which is locked or unlocked by operating an operating part 11 to engage or disengage with a receiving part 13, an indication member 2 whose tip part 21 protrudes from the outer surface side of the door D in response to the locking operation of the locking device 1, and a rod-shaped engaging member 3 juxtaposed to the indication member 2, and further, the operating part 11 has an inclined surface 112a that can come into contact with the base end part 32 of the engaging member 3. Note that the symbols in this paragraph are the symbols in Patent Document 1. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-145731 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the fitting lock of Patent Document 1, as described in paragraph 0029 of the specification, "In the locked state shown in FIG. 6, the inclined portion 33 of the engaging member 3 presses the inclined surface 112a of the operating base 112, so that the contact point between the inclined portion 33 of the engaging member 3 and the inclined surface 112a of the operating base 112 moves from the lock base 12 side toward the operating frame 111 side, and the operating part 11 moves relative to the lock base 12, the engagement between the operating part 11 and the receiving part 13 is released, and the lock device 1 enters the unlocked state shown in FIG. 5." In an emergency, the inclined portion 33 of the engaging member 3 comes into contact with the inclined surface 112a of the operating base 112 while moving the lock base 112 to unlock and open the door D, but there was a problem that the inclined portion 33 may not be able to slide smoothly against the inclined surface 112a due to changes in various components over time. Note that the symbols in this paragraph are the symbols in Patent Document 1.

[0006] In view of the above problems, the present invention aims to provide a fitting lock that can be used on the doors of private rooms used in toilets, etc., and that can be smoothly unlocked and opened by another person operating it from outside, without having to move the operating part or the like in an approximately horizontal direction, in an emergency situation in which the private room is locked and the door cannot be opened because the private room is in use and the person in the room is unable to open the door themselves due to poor health, etc., even if the door cannot be opened. [Means for solving the problem]

[0007] [1] That is, the present invention relates to a lock base (1) having a pivot shaft (11) protruding from one surface (1A) and a through hole (12), a lock base (2) having a locking hole (21) communicating with the through hole (12) and supporting the pivot shaft (11), an operating part (3) that is movable in a substantially horizontal direction along the lock base (2) and has a notch (31) at either the lower or upper end of one end, and a lock mechanism (4) that is capable of passing through the notch (31) and has a locking mechanism (4) for locking the lock base (2) and the locking mechanism (4) for locking the lock base (2). This lock for building fixtures is characterized by having a receiving part (4) that is locked by engaging with one end side or unlocked by engaging and a locking piece (51) at one end that is inserted into the through hole (12) and the locking hole (21) and can be engaged with the edge portion (22) of the locking hole (21) and can be released from the engagement with the edge portion (22) of the locking hole (21) by rotating, and a locking part (5) that has a connecting part (52) at the other end that can be connected to the tip of an external member (T).

[0008] [2] The building fixture lock described in [1] above is characterized in that it is provided with an elastic member (6) located on the other surface (1B) of the lock seat portion (1) and biasing the engaging portion (5) in the direction opposite to the direction in which the pivot shaft (11) protrudes.

[0009] [3] The lock for building fixtures described in [1] or [2] is characterized in that the cutout (31) is provided in the lower part of one end side of the operating part (3), and the pivot shaft (11) supported by the lock base (2) is provided in a direction closer to the receiving part (4) than the center of gravity of the lock base (2) and the operating part (3), or the cutout (31) is provided in the upper part of one end side of the operating part (3), and the pivot shaft (11) supported by the lock base (2) is provided in a direction farther from the receiving part (4) than the center of gravity of the lock base (2) and the operating part (3).

[0010] [4] A lock for building fixtures as described in any one of [1] to [3] above, characterized in that it has a tubular portion (7) that protrudes from another surface (1B) of the lock seat portion (1) in the opposite direction to the direction in which the pivot shaft (11) protrudes and that contains the engagement portion (5).

[0011] [5] A lock for building fixtures according to any one of [1] to [4], characterized in that the approximately horizontal length of the cutout portion (31) is longer than the approximately horizontal length of the receiving portion (4). It is.

[0012] [6] A lock for fittings according to any one of [1] to [5], characterized in that the tip of the external member (T) is rod-shaped and the connecting portion (52) is provided with an engagement hole (521) that engages with the tip of the external member (R). Effect of the Invention

[0013] According to the present invention, when used on the doors of private rooms used in toilets, etc., even if the door cannot be opened because the private room is in use and locked, in an emergency situation in which a person in the private room is unable to open the door themselves due to poor health or the like, it is possible for another person to operate the door from outside to smoothly unlock and open the door without having to move the operating part or the like in an approximately horizontal direction. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is an exploded perspective view of the fixture lock of one embodiment of the present invention as viewed from outside the door. [Diagram 2] FIG. 2 is an exploded perspective view of the fixture lock of one embodiment of the present invention as viewed from inside the door. [Diagram 3] 1 is a perspective view showing a normal unlocked state of a door in accordance with one embodiment of the present invention, as viewed from outside the door. FIG. [Figure 4] 1 is a perspective view showing a normal locked state and external members of a door lock according to one embodiment of the present invention, as viewed from outside the door. FIG. [Diagram 5] 1 is a perspective view showing the start of an emergency unlocking operation in an embodiment of the building fixture lock of the present invention, as viewed from outside the door. FIG. [Figure 6] 1 is a perspective view showing an emergency unlocking operation in progress in a fitting lock according to one embodiment of the present invention, as viewed from outside the door. FIG. [Figure 7]FIG. 2 is a perspective view showing an emergency unlocked state of the building fixture lock of one embodiment of the present invention as viewed from outside the door. [Figure 8] 1 is a horizontal cross-sectional view showing the start of an emergency unlocking operation in a locked state of a fixture lock according to one embodiment of the present invention. FIG. [Figure 9] 1 is a horizontal cross-sectional view showing an emergency unlocking operation in the middle of a locked state of a fixture lock according to one embodiment of the present invention. FIG. [Figure 10] 1 is a horizontal cross-sectional view showing the end of an emergency unlocking operation in a locked state of a fixture lock according to one embodiment of the present invention. FIG. [Figure 11] FIG. 2 is a horizontal cross-sectional view showing an emergency unlocked state in a locked state of the building fixture lock of one embodiment of the present invention. [Figure 12] 1 is a partial cross-sectional view showing the relative positional relationship between a lock base 2 and an engagement part 5 of a fitting lock according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The following is a detailed description of the embodiments of the fitting lock according to the present invention. Note that the embodiments described below are preferred examples for carrying out the present invention, and therefore various technical limitations are imposed on them, but the present invention is not limited to these embodiments unless otherwise specified in the following description to limit the invention.

[0016] 1 to 12 show components of one embodiment of the fitting lock according to the present invention, the assembled state, normal locking and unlocking states, a series of states of an emergency unlocking operation, and an emergency unlocking state, etc. In this embodiment, the fitting lock is composed of a lock seat 1, a lock base 2, an operating part 3, a receiving part 4, a locking part 5, an elastic member 6, a cylindrical part 7, etc.

[0017] The lock base 1 is a member having a pivot shaft 11 protruding from one surface, the front surface 1A, and a through hole 12. The lock base 1 is a plate-shaped member, and is fixed to the inside surface of the door D on the other surface, the back surface 1B, located opposite the front surface 1A. The inside surface of the door D is the inside side of the private room separated by the door D. In the present invention, the lock base 1 is fixed to the door D by two screws 14 through screw holes 13 drilled in the lock base 1, but in other embodiments, the lock base 1 may be fixed to the door D by an adhesive attached to the back surface 1B.

[0018] The pivot shaft 11 is a columnar or cylindrical member that protrudes substantially perpendicularly from the surface 1A of the lock seat 1 and has a circular outer shape in a cross section perpendicular to the protruding direction. The pivot shaft 11 allows the lock base 2 that supports the pivot shaft 11 to rotate relative to the lock base 1. The pivot shaft 11 includes a pivot shaft body 11a, a first pivot shaft fixing part 11b that is screwed to one end of the pivot shaft 11 so as to sandwich the lock seat 1 between the pivot shaft body 11a, and a second pivot shaft fixing part 11c that is screwed to the other end of the pivot shaft 11 so as to sandwich the lock base 2 between the pivot shaft body 11a. The pivot shaft body 11a, the first pivot shaft fixing part 11b, and the second pivot shaft fixing part 11c connect the lock seat 1 and the lock base 2 so that the lock base 2 can rotate relative to the lock base 1. In this embodiment, the pivot shaft 11 is a separate component from the lock base 1 and is attached to the lock base 1 to form an integrated unit; however, in other embodiments, the pivot shaft 11 may be molded in advance to be integrated with the lock base 1.

[0019] The through hole 12 is a hole that penetrates the front surface 1A and the back surface 1B of the lock base 1. The through hole 12 is a hole through which at least the locking piece 51 of the locking part 5 can be inserted, and in this embodiment, it is a long hole that is long in the longitudinal direction of the lock base 1, but it can be a round hole or a polygonal hole as long as the locking piece 51 can be inserted. In this embodiment, the through hole 12 is drilled in the lock base 1 at a position farther from the receiving part 4 than the pivot shaft 11, that is, farther from the receiving part 4, but in other embodiments, it may be drilled at a position closer to the receiving part 4 than the pivot shaft 11, that is, closer to the receiving part 4.

[0020] The lock base 2 has a locking hole 21 that communicates with the through hole 12, rotatably supports the pivot 11, and is a member to which the operating part 3 operated by the user is attached. The lock base 2 is provided on the front surface 1A side of the lock seat 1, and is connected to the lock seat 1 by the pivot 11. Under normal circumstances, the lock base 2 is restricted from rotating relative to the lock seat 1 by a locking part 5 that engages with an edge 22 that is the edge of the locking hole 21, but in an emergency, the edge 22 and the locking part 5 are released from the locking hole 21, allowing the lock base 2 to rotate relative to the lock seat 1.

[0021] The locking hole 21 is a hole drilled at a position that can communicate with the through hole 12 when the lock base 2 is pivotally supported by the lock seat 1, and has a shape that allows at least one end of the locking portion 5 to be inserted therethrough. The edge portion 22 is the edge of the locking hole 21, and is a part of the lock base 2 that can be engaged with one end of the locking portion 5 inserted into the locking hole 21. The locking hole 21 is an elongated hole that is long in the horizontal direction H in this embodiment, but it can be in various shapes, such as an elongated hole that is long in another direction, a polygon such as a triangle or a rectangle, or a star-shaped polygon, as long as the one end of the locking portion 5 can be inserted therethrough and engaged with the edge portion 22.

[0022] The pivot hole 23 is a hole that is drilled in the lock base 2 and supports the pivot shaft 11. The pivot hole 23 is circularly formed to fit the outer periphery of the pivot shaft 11, so that the lock base 2 can rotate relative to the pivot shaft 11.

[0023] The sliding restriction piece 24 is a generally cylindrical member that is biased toward the operating part 3 via a spring from a recess provided in the lock base 2, and can slide along a sliding groove 33 provided in the operating part 3 and move a predetermined distance in the horizontal direction H. The sliding restriction piece 24 restricts the operating part 3 to only move within a range in which the sliding restriction piece 24 can fit into the sliding groove 33, so that the operating part 3 will not fall off from the lock base 2.

[0024] The operating part 3 is a member that can move in a substantially horizontal direction along the lock base 2 and has a notch 31 at either the lower or upper part of one end side. The operating part 3 is a member that the user touches and operates directly with his / her hand from inside the private room separated by the door D. The operating part 3 is substantially rectangular parallelepiped-shaped, elongated in the horizontal direction H, and has an angular, substantially C-shaped cross section perpendicular to the longitudinal direction, and can engage with the receiving part 4 at the engagement part 32 that protrudes like a plate at the tip side of the substantially C-shape. In normal use, the user slides the operating part 3 in the horizontal direction H relative to the lock base 2, and the engagement part 32 provided at the upper or lower part of one end side of the operating part 3 engages with the receiving part 4, thereby entering a locked state, and the door D cannot be opened from either the inside or the outside.

[0025] As described above, the notch 31 is provided at either the lower or upper part of one end of the operating unit 3, so that even if the operating unit 3 is engaged with the receiving part 4 and thus in a locked state, the receiving part 4 passes through the notch 31 and the operating unit 3 and the like rotates to unlock in an emergency. In this embodiment, the notch 31 is provided at the lower part of one end of the operating unit 3 so as to be less noticeable to the user. It is preferable that the length of the notch 31 in the approximately horizontal direction is longer than the length of the receiving part 4 in the approximately horizontal direction. With such dimensions, even if the operating unit 3 is engaged with the receiving part 4 and thus in a locked state, the receiving part 4 passes through the notch 31 and the operating unit 3 and the like rotates to unlock, and the receiving part 4 can be covered and hidden by the operating unit 3 to ensure a locked state. In this embodiment, the cutout 31 is provided in an L-shape at the lower part of the operating unit 3 so as to be open in the horizontal direction H at one end of the operating unit 3, but in other embodiments, the cutout 31 may be provided in a U-shape at the lower part of the operating unit 3 so as not to be open in the horizontal direction H, as long as the receiving part 4 can pass through the cutout 31.

[0026] The sliding groove 33 is a recess that is provided on the inner surface of the operating part 3, facing the lock base 2, and extends in the longitudinal direction of the operating part 3 into which the sliding restriction piece 24 fits loosely. In this embodiment, the sliding groove 33 is provided as a long hole having a length of about one-fourth of the longitudinal direction of the operating part 3, and the sliding restriction piece 24 can only slide within this range. For this reason, the operating part 3 can move so as to be locked by engaging with the receiving part 4 or unlocked by engaging and disengaging, but is not allowed to fall off the lock base 2.

[0027] The receiving part 4 is a member that can pass through the notch 31 and is locked by engaging with one end side of the operating part 3 or unlocked by disengaging. In this embodiment, the engaging part 32 of the operating part 3 is moved in the horizontal direction H and enters an engaging groove 41 provided on the outer circumferential side surface of the receiving part 4, thereby engaging the operating part 3 and the receiving part 4. In other embodiments, the receiving part 4 does not necessarily have to be provided with the engaging groove 41, and the receiving part 4 may be capable of locking by engaging one surface of the receiving part 4 with the engaging part 32. The receiving part 4 is attached to a wall W located on approximately the same plane as D by a fixing means such as a screw 42.

[0028] The positional relationship between the lock base 2 and the operation unit 3 is preferably as follows. That is, it is preferable that the notch 31 is provided at the bottom of one end of the operation unit 3, and the rotation shaft 11 pivotally supported by the lock base 2 is provided in a direction closer to the receiving unit 4 than the center of gravity of the lock base 2 and the operation unit 3. When the lock base 2 and the operation unit 3 are provided in such a positional relationship, the other end side of the operation unit 3 becomes heavy, so that when the edge 22 and the locking unit 5 are released from the locking hole 21 and the lock base 2 and the operation unit 3 can be rotated relative to the lock seat 1, the lock base 2 and the operation unit 3 are automatically rotated relative to the lock seat 1 by gravity and unlocked, so that the door D can be opened from the outside of the private room. Alternatively, it is preferable that the notch 31 is provided at the top of one end of the operation unit 3, and the rotation shaft 11 pivotally supported by the lock base 2 is provided in a direction farther from the receiving unit 4 than the center of gravity of the lock base 2 and the operation unit 3. When the lock base 2 and operating unit 3 are arranged in this positional relationship, one end of the operating unit 3 becomes heavy, and similarly, the lock base 2 and operating unit 3 rotate automatically and reliably relative to the lock seat 1 due to gravity, thereby unlocking the door D, so that the door D can be opened from the outside of the private room.

[0029] The locking part 5 is a member having at one end 1 that is inserted through the through hole 12 and the locking hole 21 and can be locked at the edge 22 of the locking hole 21 and can be released from the locking with the edge 22 of the locking hole 21 by rotating, and at the other end a connecting part 52 that can be connected to the tip of an external member T inserted from the outside of the door D. Under normal circumstances, the locking part 5 locks with the edge 22 that is the edge of the locking hole 21, thereby restricting the lock base 2 from rotating relative to the lock seat 1, and in an emergency, the locking with the edge 22 is released and the locking part 5 is removed from the locking hole 21, allowing the lock base 2 to rotate relative to the lock seat 1, and the door D can be opened from the outside of the private room even in the locked state.

[0030] The locking portion 5 is a generally rod-shaped member disposed generally parallel to the rotation shaft 11, and has a generally T-shaped locking piece 51 at one end and a connecting portion 52 with a fitting hole 521 at the other end. In this embodiment, the locking portion 5 is formed of two members, the locking portion main body 5a and the connecting portion 52, but in other embodiments, the locking portion main body 5a and the connecting portion 52 may be integrally molded in advance. In this embodiment, the locking piece 51 is generally T-shaped, but it may have various shapes such as a generally L-shaped, a generally J-shaped, or a star-shaped polygon as long as it can be engaged with and disengaged from the edge portion 22, which is the edge of the locking hole 21. In addition, the connecting portion 52 is a part for connecting to the tip of an external member T such as a tool to rotate the locking portion 5, and in this embodiment, the connecting portion 52 is provided with a hexagonal fitting hole 521 that can fit with the tip of the external member T which is a tool such as a hexagonal wrench, but in other embodiments, as long as it can connect to the tip of the external member T to rotate the locking portion 5, the connecting portion 52 may be provided with other polygonal holes or may be provided as various members such as a hook or a magnet.

[0031] The elastic member 6 is located on the back surface 1B side, which is the other surface of the lock seat 1, and is a member that biases the locking portion 5 in the opposite direction to the direction in which the pivot shaft 11 protrudes. The locking piece 51 is inserted into the through hole 12 and the locking hole 21 against the biasing force of the elastic member 6 in normal times when it is engaged with the edge portion 22, which is the edge of the locking hole 21, but in an emergency when it is released from the edge portion 22, it is released from the through hole 12 and the locking hole 21 by the biasing force of the elastic member 6, and the lock base 2 can rotate relative to the lock seat 1, so that the door D can be opened more quickly from the outside of the compartment even in the locked state. In this way, the elastic member 6 allows the door D to be opened more quickly from the outside of the compartment even in the locked state. In addition, the elastic member 6 is a member that is preferably provided, but is not necessarily provided because the above-mentioned locking portion 5 can be operated. In this embodiment, the elastic member 6 is a coil spring located within the tubular portion 7, with one end abutting against the back surface 1B of the lock base portion 1 and the other end abutting against the flange portion of the locking portion 5, and is configured to bias the locking portion 5 outward; however, in other embodiments, a leaf spring, torsion spring, or elastic rubber can also be used as long as it biases the locking portion 5 outward.

[0032] The cylindrical part 7 is a member that protrudes from the back surface 1B, which is the other surface of the lock base 1, in the direction opposite to the direction in which the pivot shaft 11 protrudes, and contains the locking part 5. The cylindrical part 7 is composed of a hollow cylindrical part main body 7a having a volume that contains the locking part 5, and a cylindrical part cover 7b that seals the other end of the cylindrical part main body 7a. The cylindrical part 7 protrudes from the back surface 1B of the lock base 1 so that the inside of the cylindrical part 7 communicates with the through hole 12 and the locking hole 21. When the building lock of the present invention is installed on the door D, the cylindrical part main body 7a is embedded so as to penetrate the inside of the door D, so that users cannot see the cylindrical part main body 7a, but can only see the cylindrical part cover 7b from the outer surface of the door D. The insertion hole 71 drilled near the center of the cylindrical portion cover 7b allows the external member T to be inserted from the outside of the door D in order to connect one end of the external member T to the connecting portion 52 of the locking portion 5 in an emergency. The cylindrical portion 7 integrates the lock seat 1, the locking portion 5, and the cylindrical portion 7 of the building lock of the present invention, making installation at the construction site easier. In addition, by providing only the cylindrical portion main body 7a and forming a hole corresponding to the insertion hole 71 on the outer surface of the door D, it is also possible to make it possible to insert the external member T from the outside of the door D. Furthermore, although the cylindrical portion 7 is a member that is preferably provided, it is not necessarily a member that must be provided because it can be substituted by providing a cylindrical hole recessed from the inner surface to the outer surface of the door D and forming a hole corresponding to the insertion hole 71 on the outer surface of the door D.

[0033] Next, a method for using the building lock of the present invention will be described.

[0034] First, the operation in normal times will be described. Since the state in Fig. 3 is an unlocked state, the door D can be opened from both the inside and outside. Then, by moving the operating part in the horizontal direction H along the lock base 2 from the state in Fig. 3, the engaging part 32 provided on the upper part at one end side of the operating part 3 engages with the engaging groove 41 of the receiving part 4 as shown in Fig. 4, resulting in a locked state, and the door D cannot be opened.

[0035] Next, an operation in an emergency will be described. First, as shown in FIG. 4, the tip of an external member T, which is a tool such as a hexagonal wrench, is inserted into the insertion hole 71 of the cylindrical portion 7. Then, as shown in FIG. 5 and FIG. 8, the tip of the external member T is fitted into the connecting portion 52 of the locking portion 5. Then, as shown in FIG. 6 and FIG. 9, when the external member T is rotated at an angle of 90 degrees, the locking piece 51 of the locking portion 5 also rotates at an angle of 90 degrees, and the locking piece 51 and the edge portion 22 are released from the locking piece 51. Then, as shown in FIG. 10, when the tip of the external member T is released from the connecting portion 52 of the locking portion 5, the locking portion 5 is released from the through hole 12 and the locking hole 21 by the biasing force of the elastic member 6. As a result, the only member connecting the lock seat 1 and the lock base 2 is the pivot 11, and furthermore, since the pivot 11 supported by the lock base 2 is disposed in a direction closer to the receiving part 4 than the center of gravity of the integrated lock base 2 and operating part 3, the other end of the operating part 3 is heavier, and as shown in Figures 7 and 11, the receiving part 4 passes through the notch 31, causing the lock base 2 and operating part 3 to naturally pivot relative to the lock seat 1 and unlock. For this reason, the door D can be opened from outside the compartment, making it possible to rescue the occupant of the compartment, etc.

[0036] In addition, in FIG. 12, the state where the locking piece 51 of the locking portion 5 and the edge portion 22, which is the edge of the locking hole 21, are locked and the state where the locking is released are partially shown so that it is easy to understand. In FIG. 12(a) and (a'), the state corresponds to the state of FIG. 3 and FIG. 4, which are normal times, and shows the state where the locking piece 51 and the edge portion 22 are locked. In FIG. 12(b) and (b'), the state corresponds to the state of FIG. 6 and FIG. 9, which are emergency times, and shows the state where the locking piece 51 and the edge portion 22 are unlocked. In FIG. 12(c) and (c'), the state corresponds to the state of FIG. 10, which is emergency times, and shows the state where the locking portion 5 is disengaged from the locking hole 21 after the locking piece 51 and the edge portion 22 are unlocked. In this way, in normal times, the locking piece 51 and the edge portion 22 are locked, but in emergency times, the locking piece 51 and the edge portion 22 are unlocked.

[0037] Therefore, with the building lock of the present invention, even if the private room to which it is attached is locked and the door cannot be opened because it is in use, in an emergency situation where the person in the private room is unable to open the door themselves due to poor health or the like, another person can smoothly unlock and open the door by simply rotating the door from outside using the external member T, without having to move the operating part or the like in an approximately horizontal direction. [Explanation of symbols]

[0038] 1...Lock seat part 11... Rotating shaft 12...Through hole 13....Screw hole 1A···Front surface (one side) 1B···Back side (other side) 2. Lock base 21...Latching hole 22 Edge 23...Rotation hole 24....Slide control piece 3...Operation unit 31 Notch 32 Engagement portion 33...Slide groove 4. Receiving part 41 Engagement groove 5. Locking part 51 ... Locking piece 52...Connection part 521...Mating hole 6. Elastic member 7... Cylindrical part 71 Insertion hole T...Tool (external part) D···Door W···Wall H...Horizontal direction

Claims

1. A lock base portion (1) having a pivot shaft (11) protruding from one surface (1A) and a through hole (12); a lock base (2) having a locking hole (21) communicating with the through hole (12) and supporting the pivot shaft (11); an operating part (3) that is movable in a substantially horizontal direction along the lock base (2) and has a notch (31) at either the lower or upper end of one end; a receiving portion (4) that can pass through the notch portion (31) and that is locked by engaging with one end side of the operating portion (3) or unlocked by engaging and disengaging with the one end side of the operating portion (3); a locking portion (5) having a locking piece (51) at one end that is inserted through the through hole (12) and the locking hole (21) and can be locked at the edge portion (22) of the locking hole (21) and can be released from the locking with the edge portion (22) of the locking hole (21) by rotating, and a connecting portion (52) at the other end that can be connected to the tip of an external member (T); A lock for building fixtures, comprising:

2. The lock for building fixtures according to claim 1, characterized in that it is provided with an elastic member (6) located on the other surface (1B) of the lock seat portion (1) and biasing the engaging portion (5) in the opposite direction to the direction in which the pivot shaft (11) protrudes.

3. A lock for building fixtures as described in claim 1 or claim 2, characterized in that the cutout portion (31) is provided in the lower part of one end side of the operating part (3), and the pivot shaft (11) supported by the lock base (2) is provided in a direction closer to the receiving part (4) than the center of gravity of the lock base (2) and the operating part (3), or the cutout portion (31) is provided in the upper part of one end side of the operating part (3), and the pivot shaft (11) supported by the lock base (2) is provided in a direction farther from the receiving part (4) than the center of gravity of the lock base (2) and the operating part (3).

4. A lock for building fixtures as described in any one of claims 1 to 3, characterized in that it is provided with a tubular portion (7) that protrudes from another surface (1B) of the lock seat portion (1) in the opposite direction to the direction in which the pivot shaft (11) protrudes and that contains the engaging portion (5).

5. 5. The lock for fittings according to claim 1, wherein the length of the notch (31) in the approximately horizontal direction is longer than the length of the receiving portion (4) in the approximately horizontal direction.

6. A lock for building fixtures as described in any one of claims 1 to 5, characterized in that the tip of the external member (T) is rod-shaped, and the connecting portion (52) is provided with an engagement hole (521) that engages with the tip of the external member (R).

Images