Locking device

Abstract

Even if the locking device is installed on the door upside down, the drain hole will not become an entry point for water. [Solution] A locking device to be attached to an openable and closable door, comprising a drainage hole for draining water that has entered the inside of the locking device to the outside, the drainage hole being provided on the side of the locking device.

Description

Technical Field

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

Background Art

[0002] As an example of a storage box installed outdoors, product storage boxes such as the delivery boxes and vending machines shown in Patent Documents 1 and 2 are known. The storage box is provided with an openable and closable door, and a locking device for unlocking and locking is attached to the door tip side of the door. The locking device may be provided with a drainage structure for discharging the water that has entered the inside of the locking device to the outside of the locking device so that water such as rainwater does not remain inside the locking device.

[0003] As an example of the above drainage structure, the drainage structure of an electric lock shown in Patent Document 3 is known. A waterproof packing is attached to the components constituting the electric lock, and a water drain hole for discharging the water that has entered the inside of the electric lock to the outside of the electric lock is provided below the waterproof packing.

[0004] Also, as another example of the above drainage structure, the drainage structure of a cylinder lock shown in Patent Document 4 is known. A water drain hole for discharging the water that has entered through the key insertion hole is provided at the lower part of the cylinder lock.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0006] A storage box is fitted with either a right-handed door that rotates with the hinge on the right side, or a left-handed door that rotates with the hinge on the left side. When a locking mechanism is installed on one door (for example, the right-handed door) and has a drainage structure that allows water that has entered the interior to be discharged to the outside, if the locking mechanism is reversed and installed on the other door (for example, the left-handed door), the door can be unlocked and locked, but the drain hole faces upwards, which becomes an entry point for water, making it impossible to discharge the water that has entered to the outside.

[0007] The present invention has been made in view of the above problems, and one of its objectives is to provide a locking device in which the drainage hole does not become an entry point for water, even when the locking device is installed on the door upside down. [Means for solving the problem]

[0008] One of the present inventions for achieving the above objective is a locking device to be attached to an openable and closable door, which is equipped with a drainage hole for draining water that has entered the inside of the locking device to the outside, and the drainage hole is provided on the side of the locking device. Other features of the present invention will be made clearer by description in this specification and the accompanying drawings. [Effects of the Invention]

[0009] According to the present invention, even when the locking device is installed on the door upside down, it is possible to prevent the drain hole from becoming an entry point for water. [Brief explanation of the drawing]

[0010] [Figure 1A] This is a perspective view showing the door 12A of the right-handed delivery box 10 in the closed position. [Figure 1B] This is a perspective view showing the door 12A of the right-handed delivery box 10 in the open position. [Figure 2A] This is a perspective view showing the door 12B of the left-handed delivery box 10 in the closed position. [Figure 2B] It is a perspective view showing the state where the door 12B of the delivery box 10 for the left hand is open. [Figure 3A] It is an enlarged perspective view of the locking device 14 shown in FIG. 1A. [Figure 3B] It is an enlarged perspective view of the locking device 14 shown in FIG. 1B. [Figure 4A] It is a front view of the case 141 seen from the front side. [Figure 4B] It is a rear view of the case 141 seen from the rear side. [Figure 4C] It is a side view of the case 141 seen from the left side. [Figure 4D] It is a side view of the case 141 seen from the right side. [Figure 4E] It is a top view of the case 141 seen from the upper side. [Figure 4F] It is a bottom view of the case 141 seen from the lower side. [Figure 5A] When the formation position of the first drainage structure 200 is lower than the formation position of the second drainage structure 300, it is a perspective view of the first drainage structure 200 seen from the front side. [Figure 5B] When the formation position of the first drainage structure 200 is lower than the formation position of the second drainage structure 300, it is a perspective view of the first drainage structure 200 seen from the rear side. [Figure 6A] When the formation position of the second drainage structure 300 is lower than the formation position of the first drainage structure 200, it is a perspective view of the second drainage structure 300 seen from the front side. [Figure 6B] When the formation position of the second drainage structure 300 is lower than the formation position of the first drainage structure 200, it is a perspective view of the second drainage structure 300 seen from the rear side. [Figure 7] It is a side view of the locking device 14 attached to the rear side of the door 12A, seen from the left side of the locking device 14.

Mode for Carrying Out the Invention

[0011] The following at least can be made clear from the description of this specification and the attached drawings. Hereinafter, the present invention will be described according to one of its embodiments with reference to the attached drawings. In this embodiment, the storage box is assumed to be the delivery box 10 installed outdoors, for example, which may be affected by water such as rainwater. Also, the door attached to the delivery box 10 may be the right-handed door 12A or the left-handed door 12B. Note that the storage box to which the right-handed or left-handed door is attached is not limited to the delivery box 10 as long as it is a box installed outdoors and may be affected by water such as rainwater, and may be, for example, a product storage box such as a vending machine.

[0012] ===An example of the delivery box 10=== FIG. 1A is a perspective view showing a state where the door 12A of the right-handed delivery box 10 is closed. FIG. 1B is a perspective view showing a state where the door 12A of the right-handed delivery box 10 is open. FIG. 2A is a perspective view showing a state where the door 12B of the left-handed delivery box 10 is closed. FIG. 2B is a perspective view showing a state where the door 12B of the left-handed delivery box 10 is open.

[0013] In FIGS. 1A, 1B, 2A, and 2B, the front side of the delivery box 10 (the side where the doors 12A and 12B are attached) is defined as the front side, the back side facing the opposite direction to the front of the delivery box 10 is defined as the back side, the side where the door 12A of the delivery box 10 is hung (the end side of the door 12B) is defined as the right side, the end side of the door 12A of the delivery box 10 (the side where the door 12B is hung) is defined as the left side, the top plate side of the delivery box 10 is defined as the upper side, and the bottom plate side of the delivery box 10 is defined as the lower side. Also, in FIGS. 1A, 1B, 2A, and 2B, the same components are denoted by the same numbers, and duplicate explanations are omitted.

[0014] In Figures 1A and 1B, the delivery box 10 is a box in which delivered items are stored, and for example, it has the shape of a rectangular parallelepiped. On the front side of the delivery box 10, there is an opening 11 for the delivery person to store the delivered items inside the delivery box 10 and for the user (recipient) to take the delivered items out of the delivery box 10. Further in front of the opening 11, there is an openable and closable door 12A. The door 12A opens and closes by rotating on an axis 13A that extends vertically on the hinge side. A locking device 14 for unlocking and locking the door 12A is attached to the leading edge side of the door 12A.

[0015] In Figures 2A and 2B, a retractable door 12B is attached further in front of the entrance / exit 11. The door 12B opens and closes by rotating around the vertically extending edge 13B on the hinge side. On the leading edge of the door 12B, the locking device 14 shown in Figure 1A is attached upside down to serve as a locking device for unlocking and locking the door 12B.

[0016] Furthermore, within the frame surrounding the entrance / exit 11, the frame 15A extending vertically on the left side is provided with a latch receiving section (not shown) into which the latch bolt 145 of the locking device 14 enters when the door 12A is closed and retracts when the door 12A is opened. On the other hand, the frame 15B extending vertically on the right side is provided with a latch receiving section (not shown) into which the latch bolt 145 enters when the door 12B is closed and retracts when the door 12B is opened. Well-known structures can be used for these latch bolts 145 and latch receiving sections.

[0017] When the locking device 14 is attached to a right-handed door 12A, the front side of the locking device 14 (the side on which the locking device 14 appears on the surface of the door 12A) is the front side, the back side of the locking device 14 (the side on which the locking device 14 appears on the back of the door 12A) is the rear side, the hinge side of the locking device 14 on the door 12A is the right side, the leading edge side of the locking device 14 on the door 12A is the left side, the top side of the locking device 14 on the delivery box 10 is the upper side, and the bottom side of the locking device 14 on the delivery box 10 is the lower side. In Figures 1A and 1B, the front / rear, left / right, and up / down of the locking device 14 attached to the door 12A correspond to the front / rear, left / right, and up / down of the delivery box 10, respectively.

[0018] Furthermore, when the locking device 14 is attached to a left-handed door 12B, the front side of the locking device 14 (the side where the locking device 14 appears on the surface of the door 12B) is considered the front, the back side of the locking device 14 (the side where the locking device 14 appears on the back of the door 12B) is considered the rear, the door edge side of the locking device 14 is considered the right side, the hinge side of the locking device 14 is considered the left side, the top side of the locking device 14 is considered the upper side, and the bottom side of the locking device 14 is considered the lower side. In Figures 2A and 2B, the front / rear, left / right, and up / down of the locking device 14 attached to the door 12B correspond to the front / rear, left / right, and up / down of the locking device 14, respectively.

[0019] ===An example of the locking and unlocking structure of the locking device 14=== As for the structure of the locking device 14 that allows doors 12A and 12B to be opened and closed, for example, the locking devices shown in the above-mentioned Patent Documents 1 and 2 can be used. Note that the locking device 14 attached to the left-handed door 12B is simply the same as the locking device 14 attached to the right-handed door 12A, with the top and bottom reversed. Therefore, the following explanation will describe the case where the locking device 14 is attached to the right-handed door 12A.

[0020] Figure 3A is an enlarged perspective view of the locking device 14 shown in Figure 1A. Figure 3B is an enlarged perspective view of the locking device 14 shown in Figure 1B.

[0021] The locking device 14 is a structure that allows the door 12A to be opened and closed and consists of a case 141, a first operating knob 142, a second operating knob 143, a cylinder lock 144, a latch bolt 145, a front cover 146, and a rear cover 147.

[0022] The locking device 14 is attached to the door 12A by passing through an opening 121, for example, a rectangular shape, which is provided on the left side of the door 12A.

[0023] The case 141 supports the first operating knob 142, the second operating knob 143, the cylinder lock 144, and the latch bolt 145 so that they can work together in coordination. The insertion hole 400 is the hole into which the first operating knob 142 is inserted, and the insertion hole 500 is the hole into which the cylinder lock 144 is inserted. The screw hole 600 is the hole into which the screw 148 is inserted when the locking device 14 is attached to the door 12A.

[0024] The latch bolt 145 is capable of horizontal movement in the left-right direction of the door 12A. The latch bolt 145 is elastically biased toward the left of the door 12A. In other words, when the door 12A is closed and no external force is applied to the latch bolt 145, the latch bolt 145 remains engaged with the latch receiver provided in the frame 15A of the delivery box 10 at the rear of the door 12A.

[0025] The first operating knob 142 is a rotating member that can be operated from the front of the door 12A. When the first operating knob 142 is rotated clockwise or counterclockwise from its initial position toward the front of the locking device 14, the latch bolt 145 retracts from the latch receiver against elastic force, making it possible to open the door 12A. This allows delivery personnel to put packages into the loading / unloading opening 11, and allows users to take packages out of the loading / unloading opening 11. When the first operating knob 142 is released from the rotated position, the first operating knob 142 returns to its initial position according to the elastic force applied to the latch bolt 145, and the latch bolt 145 moves to the left side of the locking device 14. For example, when the door 12A is in the closed position, the latch bolt 145 is retracted into the latch receiver.

[0026] The second operating knob 143 is a rotating member that can be operated from the rear of the door 12A. When the first operating knob 142 is in its initial position and the door 12A is open, rotating the second operating knob 143 clockwise or counterclockwise from its initial position toward the rear of the locking device 14 restricts the rotation of the first operating knob 142, rendering it unable to rotate. In this state, when the door 12A is rotated toward the opening 11, the inclined surface 145a of the latch bolt 145 slides along the edge of the frame 15a, causing the latch bolt 145 to move to the right of the door 12A against elastic force. Once this sliding is complete, the latch bolt 145 moves to the left of the door 12A according to the elastic force, and finally the latch bolt 145 engages with the latch receiver. As a result, the door 121A is locked.

[0027] The cylinder lock 144 is a component that can be operated from the front of the door 12A. When the door 12A is locked and the first operating knob 142 is unable to rotate, inserting a key into the keyhole 144a of the cylinder lock 144 and rotating the key clockwise or counterclockwise toward the cylinder lock 144 will return the second operating knob 143 to its initial position, releasing the restriction on the first operating knob 142, and unlocking the door 12A. This makes it possible to rotate the first operating knob 142 and open the door 12A.

[0028] The front cover 146 is a cover that is in close contact with the surrounding surface of the opening 121 on the front side of the door 12A and covers the front side of the case 141. The first operating knob 142 and the key insertion hole 144a of the cylinder lock 144 are exposed from the front cover 146. A packing made of, for example, rubber or resin material may be interposed between the front cover 146 and the surrounding surface of the opening 121 to improve the airtightness between the front cover 146 and the door 12A.

[0029] The rear cover 147 is a cover that covers the rear of the case 141 at the rear of the door 12A. The second operating knob 143 is exposed from the rear cover 147. The packing described above may be interposed between the rear cover 147 and the case 141 to improve the airtightness between the rear cover 147 and the case 141.

[0030] The locking device 14 is integrally attached to the door 12A using screws 148. When attaching the locking device 14 to the door 12B, the locking device 14 attached to the door 12A is inverted and attached using screws 148.

[0031] The following describes an example of the procedure when a delivery company places a package in the delivery box 10 and a user retrieves the package from the delivery box 10. The first operation knob 142 and the second operation knob 143 are in their initial positions, and it is possible to grasp and rotate the first operation knob 142 and the second operation knob 143. The door 12A is closed, although it is not locked.

[0032] First, the delivery person rotates the first operating knob 142 to retract the latch bolt 145 from the latch receiver, opens the door 12A, and places the delivery item into the loading / unloading opening 11 of the delivery box 10.

[0033] Next, the delivery person rotates the second operating knob 143 from the rear of the door 12A, making it impossible to rotate the first operating knob 142, and then closes and locks the door 12A in this state.

[0034] Next, the user inserts the key into the keyhole 144a of the cylinder lock 144 and rotates the key. This causes the second operating knob 143 to rotate in conjunction with the rotation of the key, releasing the restriction on the first operating knob 142, and allowing the first operating knob 142 to rotate.

[0035] Next, the user rotates the first operating knob 142 to retract the latch bolt 145 from the latch receiver, opens the door 12A to take out the delivered item from the loading / unloading opening 11 of the delivery box 10, and then closes the door 12A.

[0036] Incidentally, since the locking device 14 is constructed by attaching parts such as the first operating knob 142, the second operating knob 143, the cylinder lock 144, the latch bolt 145, the front cover 146, and the rear cover 147 to the case 141, there is a risk that water such as rainwater may seep into the locking device 14 from the joints between the parts, or from the joint between the door 12A and the front cover 146. The same risk exists when the locking device 14 is attached to the door 12B. Therefore, the locking device 14 is equipped with a drainage structure that efficiently discharges water that has seeped inside to the outside, regardless of whether it is attached to the door 12A or 12B.

[0037] ===An example of the drainage structure of the locking device 14=== The drainage structure of the locking device 14 is provided in the case 141. The front, back, left, right, and top and bottom of the case 141 correspond to the front, back, left, right, and top and bottom of the locking device 14 attached to the right-handed door 12A, respectively.

[0038] Figure 4A is a front view of case 141 seen from the front, Figure 4B is a rear view of case 141 seen from the rear, Figure 4C is a side view of case 141 seen from the left, Figure 4D is a side view of case 141 seen from the right, Figure 4E is a top view of case 141 seen from above, and Figure 4F is a bottom view of case 141 seen from below.

[0039] Case 141 includes a first drainage structure 200 for draining water that has entered the inside of the locking device 14 to the outside when the locking device 14 is installed on a right-handed door 12A, and a second drainage structure 300 for draining water that has entered the inside of the locking device 14 to the outside when the locking device 14 is inverted and installed on a left-handed door 12B.

[0040] In Figure 4A, the first drainage structure 200 and the second drainage structure 300 are formed in a symmetrical shape, for example, in the left-hand region of the case 141, with respect to a dividing line that evenly divides the case 141 vertically into two halves.

[0041] When the locking device 14 is installed on the leading edge side of door 12A, the position where the first drainage structure 200 is formed is lower than the position where the second drainage structure 300 is formed. On the other hand, when the locking device 14 is installed on door 12B with its orientation reversed compared to when it is installed on door 12A, the position where the second drainage structure 300 is formed is lower than the position where the first drainage structure 200 is formed.

[0042] <<1st drainage structure 200>> When the locking device 14 is installed on a right-handed door 12A Figure 5A is a perspective view of the first drainage structure 200 from the front, when the formation position of the first drainage structure 200 is lower than the formation position of the second drainage structure 300. Figure 5B is a perspective view of the first drainage structure 200 from the rear, when the formation position of the first drainage structure 200 is lower than the formation position of the second drainage structure 300. The first drainage structure 200 is comprised of a first front and rear inclined surface 210, a first left and right inclined surface 220, and a first drainage hole 230.

[0043] The first front and rear inclined surfaces 210 are formed on the lower surface within the first through-hole 240 that penetrates between the front and rear sides of the case 141, and are downward-sloping surfaces that descend as you move from the rear side to the front side of the case 141.

[0044] Between the right and left ends of the rear side of the case 141, a first horizontal edge 250 is provided, extending horizontally toward the rear of the case 141 from the position of the rear end where the height of the first front and rear inclined surface 210 is highest. In the right and left regions of the first front and rear inclined surface 210, a first rear vertical surface 260 is formed, rising vertically upward from the front edge of the first horizontal edge 250. As a result, only the height of the highest rear end of the first front and rear inclined surface 210 is the same as the height of the first horizontal edge 250. Therefore, if water that has entered the inside of the locking device 14 travels along the case 141 and reaches the upper surface of the first horizontal edge 250, the first front and rear inclined surface 210 guides the water on the first horizontal edge 250 from the rear to the front of the case 141. In other words, when water on the first horizontal edge 250 flows in from the rear end of the first front and rear inclined surface 210, this water flows from the rear to the front of the first front and rear inclined surface 210 and flows vertically down from the front end of the first front and rear inclined surface 210 to the front of the case 141. Alternatively, the edge portion of the first horizontal edge 250 to the right of the first front and rear inclined surface 210 may be changed to an inclined edge that slopes downward as it approaches the first front and rear inclined surface 210, and the edge portion of the first horizontal edge 250 to the left of the first front and rear inclined surface 210 may be changed to an inclined edge that slopes downward as it approaches the first front and rear inclined surface 210. In this case, the water on the inclined edge will collect towards the rear of the first front and rear inclined surface 210, making it possible to efficiently discharge the water from the first drain hole 230.

[0045] The first left and right inclined surfaces 220 are formed on the front side of the case 141. The first left and right inclined surfaces 220 are surfaces formed in the lower part of the step created between the first front vertical surface 270, through which water flows vertically from the front end of the first front inclined surface 210, and the first protruding vertical surface 280, which extends forward of the first front vertical surface 270 around the perimeter of the first front vertical surface 270. The first left and right inclined surfaces 220 are downward-sloping surfaces that descend from the inside (right side) to the outside (left side) of the case 141 in the left-right direction. The first left and right inclined surfaces 220 are formed continuously to the left side of the case 141. In addition, the area of ​​the first front vertical surface 270 is a recessed area relative to the first protruding vertical surface 280. Therefore, when the case 141 is attached to the rear side of the door 12A, the first drain hole 230 is formed on the left side of the case 141. Then, the water that flows from the rear to the front on the first front-rear inclined surface 210 changes direction and flows from the right to the left on the first left-right inclined surface 220, and is discharged from the first drain hole 230.

[0046] <<Second drainage structure 200>> Figure 6A is a perspective view of the second drainage structure 300 from the front, when the formation position of the second drainage structure 300 is lower than the formation position of the first drainage structure 200. Figure 6B is a perspective view of the second drainage structure 300 from the rear, when the formation position of the second drainage structure 300 is lower than the formation position of the first drainage structure 200. The second drainage structure 300 comprises a second front and rear inclined surface 310, a second left and right inclined surface 320, and a first drainage hole 330.

[0047] The second front and rear inclined surface 310 is formed on the lower surface within the second through hole 340 that penetrates between the front and rear sides of the case 141, and is a downward-sloping surface that descends as you move from the rear side to the front side of the case 141.

[0048] Between the right and left ends of the rear side of the case 141, a second horizontal edge 350 is provided, extending horizontally toward the rear of the case 141 from the position of the rear end where the height of the second front and rear inclined surface 310 is highest. In the right and left regions of the second front and rear inclined surface 310, a second rear vertical surface 360 ​​is formed, rising vertically upward from the front edge of the second horizontal edge 350. As a result, only the height of the highest rear end of the second front and rear inclined surface 310 is the same as the height of the second horizontal edge 350. Therefore, if water that has entered the inside of the locking device 14 travels along the case 141 and reaches the upper surface of the second horizontal edge 350, the second front and rear inclined surface 310 guides the water on the second horizontal edge 350 from the rear to the front of the case 141. In other words, when water on the second horizontal edge 350 flows in from the rear end of the second front and rear inclined surface 310, this water flows from the rear to the front of the second front and rear inclined surface 310 and flows vertically down from the front end of the second front and rear inclined surface 310 to the front of the case 141. Alternatively, the edge portion of the second horizontal edge 350 to the right of the second front and rear inclined surface 310 may be changed to an inclined edge that slopes downward as it approaches the second front and rear inclined surface 310, and the edge portion of the second horizontal edge 350 to the left of the second front and rear inclined surface 310 may be changed to an inclined edge that slopes downward as it approaches the second front and rear inclined surface 310. In this case, the water on the inclined edge will collect towards the rear of the second front and rear inclined surface 310, making it possible to efficiently discharge the water from the second drain hole 330.

[0049] The second left and right inclined surfaces 320 are formed on the front side of the case 141. The second left and right inclined surfaces 320 are surfaces formed in the lower part of the step created between the second front vertical surface 370, through which water flows vertically from the front end of the second front and rear inclined surface 310, and the second protruding vertical surface 380, which extends forward of the second front vertical surface 370 around the second front vertical surface 370. The second left and right inclined surfaces 320 are downward sloping surfaces that descend from the inside (left side) to the outside (right side) of the case 141 in the left-right direction. The second left and right inclined surfaces 320 are formed continuously to the right side of the case 141. In addition, the area of ​​the second front vertical surface 370 is a recessed area relative to the second protruding vertical surface 380. Therefore, when the case 141 is attached to the rear side of the door 12B, the second drain hole 330 is formed on the right side of the case 141. Then, the water that flows from the rear to the front on the second front-rear inclined surface 310 changes direction and flows from left to right on the second left-right inclined surface 320, and is discharged from the second drain hole 330.

[0050] ===Installation example of locking device 14=== Figure 7 is a side view of the locking device 14, which is attached to the rear side of door 12A, as seen from the left side of the locking device 14. Note that door 12A, which is visible in front of the left side of the locking device 14, has been cut along the vertical direction so that the entire left side of the locking device 14 is visible.

[0051] When the locking device 14 is installed on a right-handed door 12A, a first drain hole 230 and a second drain hole 330 are formed vertically along the left side of the locking device 14 facing the door edge of the door 12A. Since the first drain hole 230 is located lower than the second drain hole 330, any water that enters the locking device 14 does not remain inside the locking device 14 but is discharged through the first drain hole 230 of the first drainage structure 200. On the other hand, the second drainage structure 300 is vertically symmetrical to the first drainage structure 200, and the second drain hole 330 is formed on the left side of the case 141, thus preventing water from entering the locking device 14 through the second drain hole 330.

[0052] Although not shown in the diagram, if the locking device 14 attached to door 12A is inverted and attached to door 12B for left-handed use, a first drain hole 230 and a second drain hole 330 are formed vertically on the right side of the locking device 14 facing the door edge of door 12B. Since the second drain hole 330 is located lower than the first drain hole 330, water that enters the inside of the locking device 14 does not remain inside the locking device 14 but is discharged through the second drain hole 330 of the second drainage structure 300. On the other hand, the first drainage structure 200 is vertically symmetrical to the second drainage structure 300, and the first drain hole 230 is formed on the right side of the case 141, so water is prevented from entering the inside of the locking device 14 through the first drain hole 230.

[0053] ===Summary=== As described above, the locking device 14, which is attached to the openable and closable doors (doors 12A, 12B), is equipped with drainage holes (first drainage hole 230, second drainage hole 330) for draining water that has entered the inside of the locking device 14 to the outside, and the drainage holes are provided on the side of the locking device 14.

[0054] The locking device 14 makes it possible to prevent the drain hole from becoming an entry point for water, even if the locking device 14 is installed on the door upside down.

[0055] Furthermore, the locking device 14 is further equipped with inclined surfaces (first front-rear inclined surface 210, first left-right inclined surface 220, second front-rear inclined surface 310, second left-right inclined surface 320) that guide water that has entered the interior of the locking device 14 toward the drain hole.

[0056] The locking device 14 makes it possible to efficiently drain water that has entered the inside of the locking device 14 through the drain hole.

[0057] Furthermore, the locking device 14 can be inverted vertically and installed on both a right-handed door (door 12A) and a left-handed door (door 12B).

[0058] Furthermore, in the locking device 14, when the locking device 14 is not inverted, the first drain hole 230 is located below the position of the second drain hole 330, and drains water that has entered the interior. When the locking device 14 is inverted, the second drain hole 330 is located below the position of the first drain hole 230, and drains water that has entered the interior. In addition, the first inclined surfaces (first front-rear inclined surface 210, first left-right inclined surface 220) guide water that has entered the interior toward the first drain hole 230 when the locking device 14 is not inverted, and the second inclined surfaces (second front-rear inclined surface 310, second left-right inclined surface 320) guide water that has entered the interior toward the second drain hole 330 when the locking device 14 is inverted.

[0059] The locking device 14 allows water that has entered the inside of the locking device 14 to be discharged to the outside of the locking device 14, both when the locking device 14 is not inverted and when it is inverted.

[0060] Furthermore, in the locking device 14, the front and rear inclined surfaces (first front and rear inclined surface 210, second front and rear inclined surface 310) guide water from the rear to the front in the front-rear direction, the left and right inclined surfaces (first left and right inclined surface 220, second left and right inclined surface 320) guide water from the inside to the outside in the left-right direction, and the left and right inclined surfaces guide the water guided by the front and rear inclined surfaces toward the drain hole.

[0061] According to the locking device 14, by having a structure that discharges water that has entered the interior of the locking device 14 through two inclined surfaces with different inclination directions to the drain hole, the length of the inclined surfaces in the front-to-back and left-to-right directions leading to the drain hole can be shortened, making it possible to efficiently discharge water that has entered the interior of the locking device 14 through the drain hole.

[0062] Furthermore, in the locking device 14, the door is the door of the delivery box 10 for storing delivered items. The locking device 14, when attached to the door of a delivery box 10 which is often installed outdoors, will exhibit the above effects more clearly.

[0063] The above embodiments are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention may be modified or improved without departing from its spirit, and equivalents thereof are also included.

[0064] In this embodiment, when a locking device 14 is attached to doors 12A and 12B, the first drainage structure 200 and the second drainage structure 300 are configured such that the first drainage hole 230 and the second drainage hole 330 face the leading edge side of doors 12A and 12B, but the embodiment is not limited to this. For example, the first drainage structure 200 and the second drainage structure 300 may be configured such that the first drainage hole 230 and the second drainage hole 330 face the hinge side of doors 12A and 12B, or face both the leading edge side and the hinge side of doors 12A and 12B.

[0065] Furthermore, although this embodiment describes the case in which the locking device 14 is attached to the doors 12A and 12B of a delivery box 10 installed outdoors, it is not limited to this. For example, the locking device 14 may be attached to the door of a vending machine or the like installed outdoors. [Explanation of Symbols]

[0066] 10 Delivery box, 11 Access opening, 12A, 12B Door, 13A, 13B Sides, 14 Locking device, 15A, 15B frame, 121 opening, 141 case, 142 First operating knob, 143 Second operating knob, 144 Cylinder lock, 144a Keyhole, 145 Latch bolt, 146 Front cover, 147 Rear cover, 148 Screw, 200 First drainage structure, 210 First front and rear inclined surfaces, 220 1st left and right slope, 230 1st drainage hole, 240 1st through hole, 250 First horizontal edge, 260 First rear vertical surface, 270 First front vertical surface, 280 1st overhanging vertical surface, 300 2nd drainage structure, 310 2nd longitudinal inclined surface, 320 2nd left and right slope, 330 2nd drainage hole, 340 2nd through hole, 350 Second horizontal edge, 360 Second rear vertical surface, 370 Second front vertical surface 380 Second protruding vertical surface, 400, 500 Insertion holes, 600 Screw holes

Claims

1. A locking device that can be attached to a door that can be opened and closed, The locking device is equipped with a drainage hole for discharging water that has entered the interior to the outside. The drain hole is provided on the side of the locking device. Locking device.

2. A locking device according to claim 1, The locking device further comprises an inclined surface that guides water that has entered the interior toward the drain hole. Locking device.

3. A locking device according to claim 1 or 2, The locking device can be inverted and attached to a door that can be opened and closed. Locking device.

4. A locking device according to claim 3, The drainage hole includes a first drainage hole and a second drainage hole, When the locking device is not inverted, the first drain hole is located below the position of the second drain hole, and drains water that has entered the interior. When the locking device is inverted, the second drain hole is positioned lower than the first drain hole, and drains water that has entered the interior. The inclined surface includes a first inclined surface and a second inclined surface, The first inclined surface guides water that has entered the interior toward the first drain hole when the locking device is not inverted. The second inclined surface guides water that has entered the interior toward the second drain hole when the locking device is inverted. Locking device.

5. A locking device according to claim 2, The aforementioned inclined surface comprises a front-to-back inclined surface that guides water from the rear to the front in the front-to-back direction, and a left-to-right inclined surface that guides water from the inside to the outside in the left-to-right direction. The left and right inclined surfaces guide the water guided by the front and rear inclined surfaces toward the drain hole. Locking device.

6. A locking device according to claim 1 or 2, The aforementioned door is the door of a delivery box for storing delivered packages. Locking device.

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