Rim lock

Abstract

To prevent water from adhering to a component vulnerable to water, such as substrate, provided in a rim lock (electronic lock).SOLUTION: A rim lock (100, 100A) having a function to lock and unlock a door by electrically making a dead bolt (10) proceed and retreat comprises: an enclosure (1) that is provided in the door and stores the dead bolt so as to be capable of proceeding and retreating; a substrate (2, 2A) provided in the enclosure; and a cover (9, 9A) to cover so as to sandwich the substrate between the cover and the enclosure. An irregular part (91, 101) having a water discharge part (91a, 101a) extending to outside of an installation area of the substrate is formed on a surface of the cover on opposite side of a surface facing the substrate.SELECTED DRAWING: Figure 13

Description

[Technical Field]

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

[0002] Box locks are known that are installed on doors of homes, offices, etc. to lock and unlock the doors. When locking the door, a thumbturn or cylinder is rotated manually or electrically in one direction, causing a hub stored in the box lock to rotate, and a deadbolt is advanced from the side of the door (the pivot end face) and engaged with a locking hole provided in the door frame, thereby locking the door. When unlocking the door, the thumbturn or cylinder is rotated manually or electrically in the opposite direction, causing the deadbolt to retract into the box lock and disengage from the locking hole in the door frame, thereby unlocking the door (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-197990 Summary of the Invention [Problem to be solved by the invention]

[0004] However, condensation can occur inside the lock during periods of high humidity. However, in the case of locks with an electrically operated locking / unlocking function (electronic locks), the lock contains circuit boards and other components that are vulnerable to water, so it is necessary to prevent water from adhering to these components.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a technology that prevents water from adhering to water-sensitive components such as circuit boards installed inside a box lock (electronic lock). [Means for solving the problem]

[0006] In order to solve the above problems, one aspect of the present invention is a box lock that has the function of electrically moving a deadbolt back and forth to lock and unlock a door, and comprises a housing that is installed inside the door and stores the deadbolt so that it can be moved back and forth freely, a base plate that is installed inside the housing, and a cover that covers the base plate by sandwiching it between the housing and the housing, and on the surface of the cover opposite the surface facing the base plate, a concave and convex portion is formed so that the water discharge portion extends outside the installation area of the base plate.

[0007] In the above aspect, it is preferable that the uneven portion is formed so as to extend downwardly of the door as it approaches the discharge portion.

[0008] In the above aspect, it is preferable that a plurality of the concave and convex portions are formed side by side in the vertical direction of the door.

[0009] In the above aspect, the uneven portion is preferably a groove.

[0010] In addition, in the above aspect, it is preferable that the deadbolt is provided with a drive unit that serves as the drive source for the deadbolt, a hub that rotates together with the cylinder by the drive unit, a lever that engages with the hub and moves as the hub rotates, and a sensor that detects when the lever has moved to a predetermined position, and that the lever is mounted on the housing so that at least its upper end moves along the surface of the opposing cover and its lower end moves along the surface of the opposing housing.

[0011] In addition, in the above aspect, it is preferable that a drive unit that serves as a drive source for the deadbolt is provided, the drive unit having a motor, a motor case that houses the motor, and a motor cover that covers the motor together with the motor case, and that at least one of the motor case and the motor cover is provided with a stopper that prevents the motor from coming off.

[0012] In addition, in the above aspect, it is preferable that the deadbolt is driven by a drive unit, the drive unit having a motor, a motor case that houses the motor, and a motor cover that covers the motor together with the motor case, and that at least one of the motor case and the motor cover is provided with a locking portion that bypasses the lead wires of the motor.

[0013] In the above aspect, it is preferable that the locking portion is provided at a position where the bypassed lead wires of the motor can be seen from the outside. [Effects of the Invention]

[0014] According to one aspect of the present invention, it is possible to prevent water from adhering to water-sensitive components such as a circuit board provided inside a locking box (electronic lock). [Brief explanation of the drawings]

[0015] [Figure 1] FIG. [Figure 2] This is a plan view showing the inside of the locking box with the base plate and cover removed. [Figure 3] This is an oblique view showing the inside of the locking box with the cover removed. [Figure 4] FIG. [Figure 5] FIG. 2 is a perspective view showing the vicinity of a drive unit, a drive transmission mechanism, a hub, and a cover. [Figure 6] FIG. 2 is a plan view showing the vicinity of the drive unit, the drive transmission mechanism, the hub, and the cover. [Figure 7] FIG. 2 is a perspective view showing the vicinity of a drive unit, a drive transmission mechanism, a hub, and a cover. [Figure 8] 10 is a cross-sectional view showing the vicinity of the drive unit, drive transmission mechanism, and hub located on the bottom side of the housing relative to the cover. [Figure 9] FIG. 2 is a perspective cross-sectional view of the vicinity of the notification unit. [Figure 10] FIG. 2 is a perspective cross-sectional view of the vicinity of the notification unit. [Figure 11] FIG. 2 is a perspective cross-sectional view of the vicinity of the detection unit. [Figure 12] FIG. 2 is a perspective cross-sectional view of the vicinity of the detection unit. [Figure 13] This is an oblique view showing the inside of the locking box with the cover attached. [Figure 14] FIG. [Figure 15] This is an oblique view showing the inside of the lower box lock with the cover attached. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that in the following description, the drawings are schematic, and the dimensional relationships and ratios of the elements may differ from the actual ones. The dimensional relationships and ratios may also differ between the drawings. In the following explanation, in the state shown in Figures 1 and 2, the upper side of the paper is the upper side of the locking box, the lower side of the paper is the lower side of the locking box, and the direction along the longitudinal direction of the locking box is the height direction (up-down direction) of the locking box. Also, in the state shown in Figure 2, the direction toward the paper is the thickness direction of the locking box, and the front side of the paper is the upper side in the thickness direction, and the back side is the lower side in the thickness direction.

[0017] <Box Lock Configuration> As shown in Figures 1 to 15, the locking box 100 is installed on a door of a residence, office, etc., and the door is locked or unlocked by manually or electrically moving the deadbolt forward or backward. The locking box 100 is stored inside the door, and a battery box that serves as the power source for the locking box 100 is installed on the interior side of the door. In other words, the locking box 100 functions as a battery lock (electronic lock). The locking box 100 is installed so that a portion of it is exposed on the side (swivel end face) of the door. In the following description, the locking box 100 is the upper locking box located on the upper side when two locking boxes are installed on a door. The lower locking box may have the same configuration as the upper locking box, or may have a partially different configuration. Furthermore, the locking box 100 does not have to be installed so that it is exposed on the side (swivel end face) of the door. The locking box 100 includes a housing 1, a substrate 2, a drive unit 3, a drive transmission mechanism 4, a hub 5, a detection unit 6, a notification unit 8, a cover 9, and a deadbolt 10.

[0018] The housing 1 is located at the outermost side of the locking box 100 and forms the surface of the locking box 100. The housing 1 is formed in a roughly rectangular shape when viewed from above. The locking box 100 is provided so that a portion thereof is exposed to the side surface (swivel end surface) of the door, and therefore a portion of the housing 1 is exposed to the side surface of the door. The housing 1 houses a circuit board 2, a drive unit 3, a drive transmission mechanism 4, a hub 5, a detection unit 6, an alarm unit 8, and a deadbolt 10. Each part housed in the housing 1 is covered with a resin cover 9 and a metal cover 1a. As shown in FIGS. 1 to 4, an opening 11 is formed on one side of the housing 1, through which the harness 21 connected to the circuit board 2 is pulled out. A sound hole (opening) 16 is formed on the other side of the housing 1, through which the sound emitted from the alarm unit 8 is guided to the outside. The sound hole 16 is provided on the side of the housing 1 where the deadbolt 10 advances or retreats. The sound hole 16 is formed in a position closest to the alarm unit (buzzer) 8 on the side of the housing 1. A plurality of sound holes 16 are formed, and the sound holes 16 can be hidden or exposed by a slide cover 17 that is slidably mounted on the housing 1. That is, when the sound holes 16 are covered by the slide cover 17, sound transmission to the outside of the door is blocked, and when the sound holes 16 are exposed, sound can be transmitted to the outside of the door. The opening 11 and the sound holes 16 are formed on side surfaces that face each other. The opening 11 and the sound hole 16 are not limited to being formed on side surfaces facing each other, but may be formed on adjacent side surfaces or on the same side surface. Within the housing 1, a plurality of return portions 12 are formed on the lead-out path of the harness 21 from the board 2 to the opening 11 to lock the harness 21 and divert the lead-out path of the harness 21. The return portions 12 are, for example, walls formed integrally with the housing 1 on the inner surface of the housing 1.

[0019] 2, for example, three return portions 12 are formed. The first return portion 12a is formed so as to extend in a direction intersecting the drawing direction (extension direction) of the harness 21 extending from the board 2. Here, it is preferable that the extension direction of the return portion 12a is perpendicular to the drawing direction of the harness 21. As a result, the harness 21 is bent at the tip end of the return portion 12a and is locked by the return portion 12a. The second return portion (second return portion) 12b extends from the tip end side of the return portion 12a toward the base end side, and is formed to extend parallel to the extension direction of the return portion 12a. The tip end of the return portion 12b is formed to be located closer to the base end side of the return portion 12a than the tip end of the return portion 12a. In other words, the return portion 12b is formed so that at least a portion of the return portion 12a and the return portion 12b overlap when viewed from the direction in which the harness 21 extending from the board 2 is pulled out. As a result, the harness 21 is bent at the tip end of the return portion 12b and locked to the return portion 12b. The third return portion (third return portion) 12c is formed to extend parallel to the extension direction of the return portion 12b. That is, the return portions 12a, 12b, and 12c extend parallel to one another. The tip end of the return portion 12c is formed to be located closer to the base end of the return portion 12b than the tip end of the return portion 12b. That is, the return portion 12c is formed so that at least a portion of the return portion 12b and the return portion 12c overlap when viewed from the direction in which the harness 21 extending from the board 2 is pulled out. As a result, the harness 21 is bent at the tip end of the return portion 12c and locked by the return portion 12c. The base end of the return portion 12c is connected to the base end of the return portion 12a by the wall portion 12d, and the harness 21 can be sandwiched between the return portion 12b and the wall portion 12d, forming a pulling-out path for the harness 21. The wall portion 12d serves as a bottom portion provided below the lead-out path of the harness 21.

[0020] The base end of return portion 12b and the tip end of return portion 12c form part of the edge of opening 11 through which harness 21 is pulled out to the outside of housing 1, and between return portion 12a and return portion 12c, the tip end of return portion 12b is positioned lower in the height direction of box lock 100 than the tip end of return portion 12a and the tip end of return portion 12c. By providing such return portions 12a to 12c, the harness 21 is folded back by return portion 12a, folded back in the opposite direction by return portion 12b, and further folded back by return portion 12c. That is, by routing the harness 21 extending from the base plate 2 in a zigzag pattern in the vertical direction (height direction) of the box lock 100 as shown in Fig. 2, the return portion 12b can receive the stress acting when the harness 21 is pulled upward, and the return portion 12c can receive the stress acting when the harness 21 is pulled downward.

[0021] In the housing 1, a slit 13 is formed on an extension line of the wall surface (bottom surface) of the wall portion 12d that faces the harness 21. The slit 13 is formed so as to communicate from the wall surface of the wall portion 12d to the outside of the housing 1. That is, part of the edge of the slit 13 is formed by the edge of the wall portion 12d. Since the wall portion 12d is located lower in the height direction of the locking box 100 than each of the return portions 12a to 12c, even if water droplets enter through the opening 11 or condensation occurs near the return portions 12a to 12c, the water will collect on the wall portion 12d and can be discharged to the outside of the housing 1 through the slit 13. From the viewpoint of water discharge, it is more preferable to form the wall portion 12d as an inclined surface that slopes downward in the height direction of the locking box 100 as it approaches the slit 13.

[0022] As shown in Figures 9 and 10, ribs 14 are formed in the housing 1 at positions that sandwich the board 2 and surround the outer edge of the buzzer 8 serving as an alarm unit. The ribs 14 sandwich and fix the board 2 between the cover 9 so that the board 2 does not vibrate when the buzzer 8 sounds. The ribs 14 are erected on the inner surface of the housing 1 so as to extend vertically from the bottom surface inside the housing 1. The ribs 14 are formed at a height that allows them to abut against the board 2 housed in the housing 1. Note that at least a portion of the ribs 14 may be formed in a position that faces the buzzer 8 with the board 2 sandwiched between them.

[0023] As shown in Figures 3, 9, and 10, the board 2 functions as a control unit that controls the driving of the drive unit 3 and the notification unit 8. The board 2 is connected to the detection unit 6 and receives detection signals from the detection unit 6. The board 2 is a printed circuit board on which electronic components are mounted. A harness 21 is connected to some of the electronic components mounted on the board 2, and the harness 21 is connected to a battery box or the like that serves as a power source. The harness 21 is drawn out to the outside from an opening 11 or the like in the housing 1 and is connected to a battery box or the like. The substrate 2 is housed within the housing 1 and is provided so as to abut against a rib 14 formed on the housing 1. The substrate 2 is covered with a cover 9 to prevent damage due to collision with other components.

[0024] As shown in FIGS. 2, 3, and 5 to 8, the drive unit 3 rotates the hub 5 via the drive transmission mechanism 4, and the rotation of the hub 5 serves as a drive source for locking and unlocking. The drive unit 3 includes a motor 31 , a motor case 32 , and a motor cover 33 . The motor 31 has a gear 311 attached to its drive shaft. The gear 311 is meshed with the drive transmission mechanism 4. When current is supplied from a power source, the drive shaft of the motor 31 rotates around its axis, causing the gear 311 to rotate around its axis, thereby rotating the gears 41, 42, and 43 that make up the drive transmission mechanism 4.

[0025] The motor case 32 houses part of the motor 31 and part of the drive transmission mechanism 4. The motor case 32 is provided on the bottom surface of the housing 1. The top surface of the motor case 32 is open, and the motor 31 and the drive transmission mechanism 4 can be stored inside the motor case 32 through this opening. Two leaf springs 321 are provided at a distance from each other in the motor case 32 at positions facing the end of the motor 31 opposite the gear 311, and elastically bias the stored motor 31. The motor case 32 has an opening 322 through which the lead wires 312 of the motor 31 are drawn out. The lead wires 312 are drawn out from the inside of the motor case 32 to the outside through the opening 322 in order to be connected to the board 2. The motor case 32 is provided with a locking portion 323 that routes the lead wire 312 connected to the terminal of the motor 31 closest to the opening 322 within the motor case 32 and detours it away from the opening 322. The locking portion 323 is, for example, a columnar portion formed in a columnar shape and is provided on the outer wall of the motor case 32 that faces the opening 322. The locking portion 323 is formed integrally with the motor case 32. This reduces the load on the soldered connection of the lead wire 312 when an axial force acts on the motor 31 during the locking / unlocking operation.

[0026] 2, 3, 6, and 7, the locking portion 323 is provided as part of the outer wall surface of the motor case 32, at a position where the bypassed lead wire 312 of the motor 31 can be seen from the outside. Specifically, two spaced-apart through-holes large enough to allow the lead wire 312 to pass through are formed in part of the motor case 32, and the portion sandwiched between these through-holes functions as the locking portion 323. Therefore, the lead wire 312 connected to the terminal closest to the opening 322 is not drawn straight out through the opening 322, but is drawn out through the opening 322 after being detoured so as to be routed around the locking portion 323. In this way, by providing the locking portion 323 as part of the outer wall rather than inside the motor case 32, the lead wires 312 of the motor 31 that have been routed by the locking portion 323 can be confirmed from the outside.

[0027] 3, 7, and 8, the motor cover 33 houses a part of the motor 31 and a part of the drive transmission mechanism 4. The motor cover 33 is detachably attached to the motor case 32 so that the motor 31 and the drive transmission mechanism 4 housed in the motor case 32 are sandwiched between the motor cover 33 and the motor case 32. In the motor cover 33, a stopper 331 is provided at a position opposite the end of the motor 31 opposite the gear 311, extending toward the housed motor 31 with a small gap between it and the motor 31. As shown in FIG. 8 , the stopper 331 is formed integrally with the motor cover 33 so as to extend in a direction perpendicular to the inner wall surface of the motor cover 33. The stopper 331 is provided so as to be located between the two leaf springs 321 when the motor cover 33 is attached to the motor case 32. When the motor 31 moves within the motor case 32 against the biasing force of the leaf springs 321 due to an impact such as when the box lock 100 is dropped, the stopper 331 abuts against the motor 31 to prevent further movement of the motor 31 and prevent the motor 31 from separating from the motor case 32. Note that the stopper 331 may be formed separately from the motor cover 33.

[0028] The drive transmission mechanism 4 transmits the drive force of the drive unit 3 to the hub 5, and is configured with a plurality of gears. As shown in FIGS. 2, 5, 6, and 8, the drive transmission mechanism 4 includes a first gear 41, a second gear 42, and a third gear 43. Each of the gears 41, 42, and 43 is provided on the bottom surface of the housing 1 so that its axis extends perpendicular to the bottom surface of the housing 1, and is set to a gear ratio that decelerates the rotation of the gear 311 and rotates the hub 5 at an appropriate speed. At least a portion of each of the gears 41, 42, and 43 is housed in the motor case 32 and covered by the motor cover 33. Although the drive transmission mechanism 4 includes three gears 41, 42, and 43, the number of gears is not limited to three. Depending on the number and size of each gear constituting the drive transmission mechanism 4, all of the gears may be housed in the motor case 32 and covered by the motor cover 33. The first gear 41 is meshed with a gear 311 attached to the drive shaft of the motor 31, and rotates around its axis together with the rotation of the gear 311. The second gear 42 is meshed with the first gear 41, and rotates around its axis together with the rotation of the first gear 41. The third gear 43 is meshed with the second gear 42, and rotates around its axis together with the rotation of the second gear 42. The third gear 43 is meshed with a first gear 51 included in the hub 5, and the hub 5 rotates around its axis together with the rotation of the third gear 43.

[0029] 2, 3, and 5 to 8, the hub 5 is rotatably supported within the housing 1. The hub 5 includes a cylindrical hub base body 50, and a first gear 51 and a second gear 52 provided on the outer periphery of the hub base body 50. The first gear 51 is rotatably fitted into the hub base body 50. The second gear 52 is a gear that is molded integrally with the hub base body 50 by, for example, die casting. Here, a base-side projection 50a provided on the hub base 50 and a gear-side projection 51a provided on the first gear 51 constitute a clutch mechanism. A protrusion 53 is formed on the inner peripheral surface of the hub 5. The protrusion 53 is a protrusion provided on the inner peripheral surface of the second gear. The inner cylinder of the cylinder lock can engage with the protrusion 53, and rotation of the inner cylinder drives the protrusion 53, causing the second gear 52 that constitutes the hub 5 to rotate. Similarly, when a thumb turn provided on the inside of the door is rotated, the protrusion 53 rotates in conjunction with the rotation of the thumb turn, and the hub base 50 and second gear 52, which are the same component as the protrusion 53, rotate, causing the second gear 52 that constitutes the hub 5 to rotate.

[0030] The first gear 51 of the hub 5 is meshed with the third gear 43 of the drive transmission mechanism 4, and the first gear 51 can be rotated by driving the motor 31. The first gear 51 rotates freely, and the gear-side protrusion 51a comes into contact with the base-side protrusion 50a, engaging the clutch, and then the hub 5 rotates together with the hub base 50. Therefore, when the hub 5 rotates, the slider 54 having the rack gear 54a meshed with the second gear 52 that rotates integrally with the hub base 50 slides, causing the deadbolt 10 to advance or retreat.

[0031] The detection unit 6 detects that the hub 5 has rotated a predetermined amount in order to perform control to stop the motor 31. 2, 11, and 12, the detection unit 6 includes a lever 61 and a sensor 62. One end of the lever 61 engages with the gear-side protrusion 51a of the hub 5, and the other end is movable between a detection position where it is detected by the sensor 62 and a retracted position where it is not detected by the sensor. The lever 61 is pivotally connected to the bottom of the housing 1 between its one and other ends. The other end of the lever 61 is formed to protrude toward the bottom of the housing 1 so as to fit into a recess 15 formed in the housing 1. This stabilizes the swing path of the other end of the lever 61 when it swings, ensuring reliable detection by the sensor 62. One end of the lever 61 is biased toward the gear-side protrusion 51a by a spring 63.

[0032] The lever 61 is provided so as to be sandwiched between the housing 1 and the cover 9. The lever 61 is arranged at a plurality of positions at the upper or lower end in the height direction along the thickness direction of the box lock 100, with a small gap between them so as to face either the housing 1, the base plate 2, or the cover 9. In other words, the upper or lower end face of the lever 61 is formed so as to swing along the surface of either the housing 1, the base plate 2, or the cover 9, and is provided on the housing 1. The lever 61 is formed so that its upper end surface in the height direction follows the surface of any part of the cover 9 that it faces, with a small gap between them. That is, the lever 61 swings while maintaining a substantially constant gap between its upper end surface in the height direction and the surface of the cover 9 that it faces. Specifically, the upper end surface 61a near one end of the lever 61 faces, with a small gap between them, the lower end surface of a rib 93 that protrudes from the cover 9 toward the board 2. Furthermore, the upper end surface 61b near the other end of the lever 61 faces, with a small gap between them, the lower end surface of the board 2. Lever 61 is formed so that its lower end surface in the height direction follows the surface of any part of housing 1 that it faces, with a small gap between it and the facing surface. That is, lever 61 swings while maintaining a substantially constant gap between its lower end surface in the height direction and the facing surface of housing 1. Specifically, lower end surface 61c near the other end of lever 61 faces the bottom surface of recess 15 formed in housing 1 with a small gap between them.

[0033] The sensor 62 is configured by, for example, a photointerrupter, and detects the presence of the other end of the lever 61 which swings as the hub 5 rotates. When the hub 5 is rotated by the drive of the motor 31, the gear-side projection 51a turns, and the lever 61, which is swingable about its attachment point to the housing 1, rotates in conjunction with the gear-side projection 51a, turning on and off the sensor 62. As a result, the motor 31 is stopped and controlled by the board 2 when the sensor 62 turns on. The motor 31 enters an operating mode upon receiving a wireless signal from a mobile terminal and is driven by pressing a push button on an operation lock provided on the door handle or cylinder unit. The motor 31 can also be driven by operating the mobile terminal alone.

[0034] Here, an operation for manually operating the thumb turn or cylinder using the detection unit 6 will be described. When the locking / unlocking operation by the motor 31 is completed, the motor 31 rotates in the reverse direction from the rotation when the locking / unlocking operation was performed. This reverse rotation continues until the gear-side protrusion 51a of the first gear 51 is separated by a predetermined distance from the base-side protrusion 50a. Here, the predetermined distance refers to a distance that allows the base-side protrusion 50a to rotate freely relative to the first gear 51 when a user operates the thumb turn or cylinder. Whether the predetermined distance has been secured by the reverse rotation can be determined by the degree of swing of the lever 61. Before the gear-side protrusion 51a of the first gear 51 is separated by the predetermined distance from the base-side protrusion 50a, one end of the lever 61 is pushed up by the gear-side protrusion 51a, and the other end of the lever 61 remains in the sensor area of the sensor 62, so that the ON state is maintained in the sensor 62. On the other hand, when the gear side protrusion 51a of the first gear 51 moves a predetermined distance away from the base side protrusion 50a, one end of the lever 61 enters the gap between the gear side protrusion 51a and the base side protrusion 50a, causing the other end of the lever 61 to leave the sensor area of the sensor 62, causing the sensor 62 to output an OFF signal. This operation indicates whether the predetermined distance has been secured by reverse rotation. If this operation is not performed, i.e., if the predetermined distance is not secured by reverse rotation, the base-side protrusion 50a is in a mechanically locked state. The mechanically locked state refers to a situation in which the base-side protrusion 50a and the gear-side protrusion 51a of the first gear 51 mesh with each other, the gear-side protrusion 51a mesh with the third gear 43 of the drive transmission mechanism 4, and the first gear 41 of the drive transmission mechanism 4 mesh with the gear 311 fixed to the motor 31, making it impossible or difficult to manually operate the thumbturn or cylinder. By performing reverse rotation according to the above procedure, the mechanical lock is released, allowing the user to manually operate the thumbturn or cylinder.

[0035] 1, 3, 9, and 10, the notification unit 8 notifies the user by sound when the door is locked or unlocked, when the battery is dead, and other conditions. Specifically, the notification unit 8 is a buzzer (piezoelectric buzzer) 8 that notifies the user of each condition by generating a sound. The buzzer 8 is provided on the substrate 2, and its sound is controlled. The buzzer 8 is covered from above in the thickness direction of the locking box 100 by the cover 9, and is sandwiched between the substrate 2 and the cover 9. In other words, the cover 9 and the housing 1 sandwich the substrate 2 and the buzzer 8. Within the locking box 100, a sound transmission path R is formed that connects the buzzer 8 to the sound hole 16. The buzzer 8 is provided in a position facing the sound hole 16. As shown in Figure 3, all of the sound holes 16 are covered with a sound-permeable membrane 82. The sound-permeable membrane 82 is provided on the inner surface of the housing 1 so as to cover all of the sound holes 16. The sound-permeable membrane 82 is a sheet that allows air to pass through but not water, and is formed, for example, in a circular shape. This allows sound from the buzzer 8 to be guided to the outside through the sound-permeable membrane 82 and the sound holes 16, but water from the outside cannot pass through the sound-permeable membrane 82 and therefore does not infiltrate the locking box 100.

[0036] 5 to 7, 13, and 14, the cover 9 is provided inside the housing 1, and covers almost the entire area of the board 2 from above in the thickness direction of the locking box 100, sandwiching the board 2 between the cover 9 and the bottom surface of the housing 1. The cover 9 prevents damage to the board 2 due to contact with other components, and also prevents water from entering the board 2. The cover 9 has an uneven portion formed on the surface opposite to the surface facing the base plate 2, the uneven portion being a groove 91 formed on the surface of the base plate 2. Note that the uneven portion is not limited to the groove 91 and may be a protrusion portion protruding from the surface of the cover 9, but is preferably a groove 91 from the viewpoint of making the locking box 100 thinner.

[0037] Both ends of the groove 91 function as water discharge portions 91a, and the discharge portions 91a are formed to communicate with the outer edge of the cover 9. The groove 91 is formed to be bent or curved along the way. The groove 91 is formed so that the discharge portions 91a at both ends extend outside the installation area of the substrate 2. Specifically, in the thickness direction of the lock box 100 (thickness direction of the housing 1), the discharge portion 91a of the groove 91 is located above the bottom surface of the housing 1, and no components are placed between the discharge portion 91a and the bottom surface of the housing 1, or components that do not cause problems even if they come into contact with water are placed there. Furthermore, in the height direction of the door (height direction of the housing 1), no components are placed below the discharge portion 91a of the groove 91, or components that do not cause problems even if they come into contact with water are placed there.

[0038] The groove 91 is formed so as to extend downward in the height direction of the door (downward in the height direction of the locking box 100) toward the discharge portion 91a. In other words, when the locking box 100 is installed on the door, the groove 91 is formed so as to extend downward in the height direction of the locking box 100 toward both ends, with the vicinity of the center of the groove 91 being at the highest position. A plurality of grooves 91 are formed in a line in the vertical direction of the door. The grooves 91 are connected to each other at their respective discharge portions 91a. That is, no matter which groove 91 water flows into, the water can be discharged from the same position on the cover 9 to outside the installation area of the substrate 2. In the thickness direction of the box lock 100 (thickness direction of the housing 1), the cover 9 is covered from above by the cover 1a, and all other parts are housed within the housing 1 and the cover 1a.

[0039] When two box locks are installed on a door, the above-mentioned box lock is placed on the upper side, but as shown in Figure 15, even in the box lock 100A placed on the lower side, the groove 101 is almost the same as the groove 91. Specifically, in the locking box 100A, one end of each groove 101 functions as a water outlet 101a, and the outlet 101a is formed to communicate with the outer edge of the cover 9A. The groove 101 is formed to be bent or curved along the way. The groove 101 is formed so that the outlet 101a at one end extends beyond the installation area of the board 2A. Specifically, in the thickness direction of the locking box 100A (thickness direction of the housing 1), the outlet 101a of the groove 101 is located above the bottom surface of the housing 1, and no components are placed between the outlet 101a and the bottom surface of the housing 1, or components that do not cause problems even if they come into contact with water are placed there. Furthermore, in the height direction of the door (height direction of the housing 1), no components are placed below the outlet 101a of the groove 101, or components that do not cause problems even if they come into contact with water are placed there.

[0040] The groove 101 is formed so as to extend downward on the door (downward in the height direction of the locking box 100) as it approaches the discharge portion 101a. In other words, when the locking box 100A is installed on the door, the groove 101 is formed so as to extend downward as it approaches one end. A plurality of grooves 101 are formed in a line in the vertical direction of the door. The grooves 101 are connected to each other at their respective discharge portions 101a. That is, no matter which groove 101 water flows into, the water can be discharged from the same position on the cover 9A to outside the installation area of the substrate 2A.

[0041] 14, a plurality of ribs 92, 93, and 94 are formed on the cover 9. Specifically, the rib 92 extends from the cover 9 in the thickness direction of the lock box 100 so as to abut against the base plate 2 or to face the base plate 2 with a small gap in between, in order to suppress rattling of the base plate 2. The ribs 92 are formed dispersed over a wide range near the periphery of the cover 9 so as to be able to hold the base plate 2 evenly. The rib 93 extends from the cover 9 in the thickness direction of the locking box 100 so as to face the upper end surface 61a of the lever 61 with a small gap therebetween in order to prevent the lever 61 from rattling.

[0042] The rib 94 extends from the cover 9 in the thickness direction of the box lock 100 so as to abut against the substrate 2 to suppress vibration of the substrate 2 when the buzzer 8 sounds. The rib 94 is formed in a roughly C-shape in a plan view so as to surround the outer edge of the buzzer 8. The portion of the rib 94 facing the sound-permeable membrane 82 is formed as a notch 94a, so that the sound emitted from the buzzer 8 can easily be transmitted to the sound-permeable membrane 82 without being blocked by the rib 94. That is, the rib 94 surrounds the buzzer 8 except for at least the area facing the portion of the housing 1 exposed on the side of the door, and presses one side of the substrate 2. That is, one side of the substrate 2 is pressed by the rib 14, and the other side is pressed by the rib 94. As a result, the rib 94 prevents the sound emitted from the buzzer 8 from diffusing to the surroundings and also forms a sound transmission path R that connects the buzzer 8 to the sound-permeable membrane 82. Here, the notch 94a of the rib 94 in the cover 9 facing the sound transmission path R is formed with an inclined surface 95 that is inclined toward the sound-permeable membrane 82. This allows sound to be transmitted more effectively to the sound-permeable membrane 82. The rib 94 is preferably formed in a position opposite the rib 14 across the substrate 2, in order to suppress vibration of the substrate 2 and prevent a decrease in the volume of the buzzer 8.

[0043] As shown in FIGS. 1 to 4, the deadbolt 10 has a bent tip formed into a hook shape. The deadbolt 10 is housed in the housing 1 so that it can move back and forth freely. Rotating the thumbturn or cylinder in the locking direction rotates the hub 5, causing the deadbolt 10 to advance from the side of the door and engage with a locking hole provided in the door frame, thereby locking the door. To unlock the door, rotating the thumbturn or cylinder in the unlocking direction retracts the deadbolt 10 completely into the locking box 100 and disengages it from the locking hole in the door frame, thereby unlocking the door.

[0044] With the locking box 100, 100A described above, condensation may occur inside the locking box 100, 100A during periods of high humidity. If water adheres to the base plate 2, 2A, the deadbolt 10 may not function properly. However, by covering almost the entire base plate 2, 2A with the cover 9, 9A and forming grooves 91, 101 on the surface of the cover 9, 9A, water can be guided along the grooves 91, 101 to the outside of the installation area of the base plate 2, 2A and discharged through the discharge ports 91a, 101a. This prevents water from adhering to the base plate 2, 2A installed inside the locking box 100, 100A.

[0045] Furthermore, since the housing 1 is provided with multiple return portions 12, the harness 21 connected to the board 2 can be routed in different directions, and even if the harness 21 is pulled, the return portions 12 can absorb the stress. As a result, the harness 21 is hardly subjected to stress, preventing disconnection of the harness 21 and separation of the connection between the board 2 and the harness 21. Since a slit 13 is formed on the extension line of the wall surface of the wall portion 12d facing the harness 21, even if water seeps in through the opening 11 through which the harness 21 is pulled out, the water can be smoothly drained through the slit 13, preventing the harness 21 from becoming waterlogged. Here, by forming the wall surface of the wall portion 12d as an inclined surface that slopes downward toward the box lock 100 toward the slit 13, water can be drained more quickly.

[0046] Furthermore, the cover 9 is formed with a rib 94, which can suppress vibration of the substrate 2 when the buzzer 8 sounds. This allows the sound of the buzzer 8 to be guided from the sound-permeable membrane 82 to the outside of the lock box 100 without reducing the volume of the buzzer 8. The rib 94 is formed with a notch 94a, which allows the sound emitted from the buzzer 8 to be easily transmitted to the sound-permeable membrane 82 without being blocked by the rib 94. Therefore, the rib 94 prevents the sound emitted from the buzzer 8 from diffusing to the surroundings and can form a sound transmission path R toward the sound-permeable membrane 82. The notch 94a is formed with an inclined surface 95 that is inclined toward the sound-permeable membrane 82, which can more effectively transmit sound to the sound-permeable membrane 82. The rib 94, together with a rib (second rib) 14 formed on the housing 1, can sandwich the substrate 2 to suppress vibration of the substrate 2.

[0047] Furthermore, the upper end surface 61a of the lever 61 faces the rib 93 of the cover 9 with a small gap therebetween, the upper end surface 61b faces the board 2 with a small gap therebetween, and the lower end surface 61c faces the recess 15 on the bottom surface of the housing 1 with a small gap therebetween, thereby preventing the lever 61 from wobbling in the vertical direction. This allows the sensor 62 to reliably detect that the lever 61, which swings with the rotation of the hub 5, has reached a predetermined position.

[0048] In addition, a stopper 331 is provided on the motor cover 33, so that when the motor 31 moves within the motor case 32 against the spring force of the leaf spring 321 due to the impact of the box lock 100 being dropped, for example, the stopper 331 abuts against the motor 31 to prevent further movement of the motor 31 and prevent the motor 31 from coming off the motor case 32.

[0049] Furthermore, because the motor case 32 is provided with a locking portion 323, the lead wires 312 connected to the terminals of the motor 31 closest to the opening 322 can be routed within the motor case 32 and detoured away from the opening 322. This reduces the load on the soldered connections of the lead wires 312 when an axial force acts on the motor 31 during the locking / unlocking operation. The locking portion 323 is provided as part of the outer wall surface of the motor case 32 in a position where the detoured lead wires 312 of the motor 31 can be seen from the outside. Therefore, the detoured lead wires 312 of the motor 31 can be seen from the outside by the locking portion 323, making it easy to check for any missed work.

[0050] <Other> Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and includes all aspects encompassed by the concept of the present invention and the scope of the claims. Furthermore, each configuration may be appropriately and selectively combined to achieve at least some of the above-described problems and effects. Furthermore, for example, the shape, material, arrangement, size, etc. of each component in the above embodiments may be appropriately modified depending on the specific use of the present invention. For example, the shapes and arrangements of the return portions 12a, 12b, 12c and the ribs 14 of the housing 1 can be freely changed within the scope of fulfilling the above-mentioned functions. The shape and arrangement of the locking portion 323 of the motor case 32 can be freely changed as long as the above-mentioned functions are satisfied. The locking portion 323 may be provided on the motor cover 33. The shape and arrangement of the stopper 331 of the motor cover 33 can be freely changed within the range that satisfies the above-mentioned functions. The stopper 331 may be provided on the motor case 32. Furthermore, the shape and arrangement of lever 61 and the type of sensor 62 in detection unit 6 can be freely changed within the scope of fulfilling the above-mentioned functions. Lever 61 only needs to be configured so that the upper and lower end surfaces do not rattle due to at least two of housing 1, substrate 2, and cover 9. Furthermore, the shape, arrangement, and number of grooves 91 on the cover 9 and the position of the ejection portion 91a can be freely changed within a range that satisfies the above-mentioned functions, depending on the arrangement of each component of the locking box 100. The shape, arrangement, and number of ribs 92, 93, and 94 on the cover 9 can be freely changed within a range that satisfies the above-mentioned functions, depending on the size of the substrate 2 and the arrangement of the notification portion 8. [Explanation of symbols]

[0051] 1...housing, 11...opening, 12a, 12b, 12c...return portion, 13...slit, 14...rib, 16...sound-passing hole, 2, 2A...board, 21...harness, 3...drive portion, 31...motor, 312...lead wire, 32...motor case, 323...locking portion, 33...motor cover, 331...stopper, 4...drive transmission mechanism, 5...hub, 6...detection portion, 61...lever, 61a, 61b...upper end surface, 61c...lower end surface, 62...sensor, 8...buzzer (alarm portion), 82...sound-passing membrane, 9, 9A...cover, 91, 101...groove (concave and recessed portion), 91a, 101a...discharge portion, 92...rib, 93...rib, 94...rib, 95...inclined surface, 10...deadbolt, 100, 100A...box lock, R...sound transmission path

Claims

1. A box lock with a function to lock and unlock the door by electrically moving the deadbolt forward and backward, a housing provided inside the door and accommodating the deadbolt so that it can be moved forward and backward; a substrate provided within the housing; a cover that covers the substrate so as to sandwich the substrate between the housing and the cover, A box lock in which an uneven portion is formed on the surface of the cover opposite to the surface facing the base plate, so that the water drainage portion extends outside the installation area of the base plate.

2. The lock according to claim 1 , wherein the recessed and projecting portions are formed so as to extend downwardly toward the discharge portion.

3. The lock according to claim 1 or 2, wherein the concave and convex portions are formed in a plurality of rows in the vertical direction of the door.

4. The lock box according to claim 1 or 2, wherein the concave and convex portions are grooves.

5. A drive unit that serves as a drive source for the deadbolt; a hub that rotates together with the cylinder by the drive unit; a lever that engages with the hub and moves as the hub rotates; a sensor that detects that the lever has moved to a predetermined position; 3. The lock according to claim 1, wherein the lever is provided on the housing so that at least its upper end moves along the surface of the opposing cover and its lower end moves along the surface of the opposing housing.

6. A drive unit that serves as a drive source for the deadbolt is provided, the drive unit includes a motor, a motor case that houses the motor, and a motor cover that covers the motor together with the motor case, 3. The lock according to claim 1, wherein at least one of the motor case and the motor cover is provided with a stopper that prevents the motor from coming off.

7. A drive unit that serves as a drive source for the deadbolt is provided, the drive unit includes a motor, a motor case that houses the motor, and a motor cover that covers the motor together with the motor case, 3. The lock according to claim 1, wherein at least one of the motor case and the motor cover is provided with a locking portion for bypassing the lead wires of the motor.

8. 8. The lock according to claim 7, wherein the locking portion is provided at a position where the bypassed lead wires of the motor can be seen from the outside.

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