Locking and unlocking devices, box locks and doors

Abstract

To provide a locking / unlocking device, a box lock, and a door which are capable of saving a space.SOLUTION: A locking / unlocking device includes a locking / unlocking section 5 configured to be in a locked state when its rotation is restricted and in an unlocked state when its rotation is permitted, a manual rotating section 6 to be rotated by a manual operation to switch between the locked state and the unlocked state of the locking / unlocking section 5, and an electric rotating section 7 to be rotated by an electric operation to switch between the locked state and the unlocked state of the locking / unlocking section 5, the locking / unlocking section 5, the manual rotating section 6, and the electric rotating section 7 being on the same rotation axis.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to a locking and unlocking device, a box lock, and a door.

Background Art

[0002] An electric locking and unlocking device that performs locking and unlocking electrically is known. In the locking and unlocking device disclosed in Patent Document 1, the rotation of a worm gear attached to the output shaft of a drive motor is transmitted to a rotating part via a plurality of gears, and the deadbolt moves by the rotation of the rotating part to perform locking and unlocking. Even in a box lock in which a locking and unlocking device and a door latch device are provided inside a housing, an electric locking and unlocking device may be provided in addition to the manual type.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An electric locking and unlocking device has more parts and a larger installation space than a manual locking and unlocking device. Since the design of an electric locking and unlocking device is different from that of a manual locking and unlocking device, there are few parts common to the manual locking and unlocking device. When providing an electric locking and unlocking device in a box lock, it is necessary to make the housing larger than when only providing a manual locking and unlocking device. When the housing cannot be enlarged during renovation or the like, it is necessary to remove the door latch device from the box lock and provide the door latch device separately from the box lock. Therefore, downsizing of the locking and unlocking device provided inside the box lock is desired.

[0005] An object of the present disclosure is to provide a locking and unlocking device, a box lock, and a door that can achieve downsizing.

Means for Solving the Problems

[0006] To achieve the above objective, the locking and unlocking device according to this disclosure includes a locking and unlocking unit that enters a locked state when rotation is restrained and an unlocked state when rotation is permitted; a manual rotating unit that rotates by manual operation to switch between the locked and unlocked states of the locking and unlocking unit; and an electric rotating unit that rotates by electric operation to switch between the locked and unlocked states of the locking and unlocking unit, wherein the rotating shaft of the locking and unlocking unit, the rotating shaft of the manual rotating unit, and the rotating shaft of the electric rotating unit are arranged coaxially.

[0007] To achieve the above objective, the box lock according to this disclosure comprises a housing and a locking / unlocking device housed inside the housing, wherein the locking / unlocking device comprises a locking / unlocking section that is locked when rotation is restrained and unlocked when rotation is permitted, a manual rotating section that rotates by manual operation to switch between the locked and unlocked states of the locking / unlocking section, and an electric rotating section that rotates by electric operation to switch between the locked and unlocked states of the locking / unlocking section, wherein the rotating shaft of the locking / unlocking section, the rotating shaft of the manual rotating section, and the rotating shaft of the electric rotating section are arranged coaxially.

[0008] To achieve the above objective, the door relating to this disclosure is equipped with the above-described box lock. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of a door and box lock. [Figure 2] This is a perspective view of a box lock. [Figure 3] This is a front view of a box lock with the handle gear in the closed position and the latch bolt in the closed position. [Figure 4] This is a front view of a box lock with the handle gear in the open position and the latch bolt in the open position. [Figure 5] This is an exploded perspective view of the box lock, seen from the inside. [Figure 6] This is a perspective view of the locking / unlocking mechanism from the outside. [Figure 7] This is a front view of the box lock in the locked state using the manually rotating mechanism. [Figure 8]It is a front view of a key lock in a locked state by an electric rotating part. [Figure 9] It is a view of the manual rotating member and the torsion coil spring as seen from the outdoor side. [Figure 10] It is a perspective view of the manual rotation restraint part as seen from the outdoor side. [Figure 11] It is a view of the manual rotating part in a locked state as seen from the indoor side. [Figure 12] It is a view of the manual rotating part in a locked state as seen from the outdoor side. [Figure 13] It is a view of the manual rotating part in a posture between the locked state and the unlocked state as seen from the outdoor side. [Figure 14] It is a view of the manual rotating part in an unlocked state as seen from the indoor side. [Figure 15] It is a view of the manual rotating part in an unlocked state as seen from the outdoor side. [Figure 16] It is a front view of the electric rotating part in an unlocked state. [Figure 17] It is a perspective view of the electric rotating part in an unlocked state. [Figure 18] It is a front view of the electric rotating part in a locked state. [Figure 19] It is a perspective view of the electric rotating part in a locked state. [Figure 20] It is a front view of a locking / unlocking device provided with a manual rotating part without providing an electric rotating part. [Figure 21] It is a perspective view of a locking / unlocking device provided with a manual rotating part without providing an electric rotating part.

Embodiments for Carrying Out the Invention

[0010] As shown in FIG. 1, the box lock 1 is attached to the end on the door tip side of the door 11 of the opening door provided in the opening. In the following description, the horizontal direction along the surface of the door 11 is referred to as the door width direction. In the drawings, the door width direction is denoted by an arrow X. The door 11 is provided on one side in the door width direction and rotates about an axis extending in the vertical direction to open and close the opening. Among the door width direction, the side where the hanging end of the door 11 is located is referred to as the hanging end side, and the side where the door tip of the door 11 is located is referred to as the door tip side. In the drawings, the vertical direction is denoted by an arrow Z. The direction connecting one surface and the other surface of the door 11 is referred to as the indoor / outdoor direction. In the drawings, the indoor / outdoor direction is denoted by the Y direction. Among the indoor / outdoor direction, the side where one surface of the door 11 facing the outdoor when the door 11 closes the opening is located is referred to as the outdoor side, and the side where the other surface of the door 11 facing the indoor when the door 11 closes the opening is located is referred to as the indoor side. In FIG. 1, the front side of the door 11 is the indoor side, and the back side of the door 11 is the outdoor side.

[0011] As shown in FIGS. 1 to 3, the box lock 1 includes a housing 21, a front plate 22, a front plate cover 25, a door latch device 3, and a locking and unlocking device 4, and is fixed to the door 11 by set screws 261 and 262. The door latch device 3 and the locking and unlocking device 4 are provided inside the housing 21. The housing 21 is open to the indoor side. Inside the housing 21, a control board 13 is provided. The control board 13 is a control board that controls the electric motor 9 of the locking and unlocking device 4, or a control board in the case of connecting an electric motor to the handle hub 34 to make it electric.

[0012] The front plate 22 is provided at the door-side end of the housing 21. The front plate 22 has a hole 221 that penetrates in the door width direction. The front plate cover 25 is positioned to cover the entire door-side surface of the front plate 22. The front plate cover 25 is provided along the door-side end face of the door 11. The front plate cover 25 has a hole 251 that penetrates in the door width direction. The hole 251 of the front plate cover 25 and the hole 221 of the front plate 22 overlap in the door width direction. The latch 311 of the latch bolt 31 of the door latch device 3 is inserted into these holes 221 and 251. The front plate 22 corresponds to the plate portion of the claims. The front plate cover 25 corresponds to the cover portion of the claims.

[0013] The locking / unlocking device 4 is a thumbturn lock and can be operated both manually and electrically. The locking / unlocking device 4 locks and unlocks by restricting the movement of the latch bolt 31. The thumbturn 41 of the thumbturn lock is shown in Figure 1.

[0014] As shown in Figures 2 and 3, the door latch device 3 includes a latch bolt 31, a rack gear section 32, a door handle 33, a handle hub 34, and a handle gear section 35. The door handle 33 is shown in Figure 1. The latch bolt 31 and the rack gear section 32 extend in the width direction. The latch bolt 31 and the rack gear section 32 are movable in the door width direction between the closed position shown in Figure 3 and the open position shown in Figure 4, respectively. In both the closed and open positions, the latch 311 is inserted into the hole 221 in the front plate 22 and the hole 251 in the front plate cover 25. The amount of protrusion of the latch 311 from the front plate cover 25 toward the door edge is greater when it is in the closed position than when it is in the open position. The closed position of the latch bolt 31 and the rack gear section 32 is a position toward the door edge than the open position.

[0015] As shown in Figure 3, when the door 11 is closed and the latch bolt 31 is positioned in the closed position, the latch 311 of the latch bolt 31 is inserted into the strike plate 12 of the door frame. This restricts the opening and closing movement of the door 11. As shown in Figure 4, when the door 11 is closed and the latch bolt 31 is positioned in the open position, the latch 311 disengages from the strike plate 12 of the door frame. This allows the door 11 to open and close. When positioned in the open position, the amount of protrusion of the latch 311 from the front plate cover 25 is minimal. When the door 11 is closed and positioned in the open position, the portion of the latch 311 that protrudes from the front plate cover 25 is positioned in the gap between the door frame and the door 11 and is not inserted into the strike plate 12 of the door frame.

[0016] When the rack gear section 32 moves from the closed position to the open position, i.e., towards the hinge side, it pushes the latch bolt 31 towards the hinge side, placing it in the open position. A compression spring 312 is provided between the hinge-side end of the latch bolt 31 and the wall of the housing 21. The compression spring 312 is compressed when the latch bolt 31 is placed in the open position, and its restoring force pushes the latch bolt 31 towards the door edge side. Because the latch bolt 31 is pushed towards the hinge side by the rack gear section 32 in the open position, it remains in the open position even when pushed towards the door edge side by the compression spring 312. When the rack gear section 32 moves from the open position to the closed position, i.e., towards the door edge side, it does not push the latch bolt 31 towards the hinge side. When the rack gear section 32 returns to the closed position, the latch bolt 31 is restored to the closed position by the restoring force of the compression spring 312.

[0017] Before the front plate cover 25 is installed, the latch bolt 31 is freely rotatable in the radial direction relative to the rack gear section 32. The hole 221 in the front plate 22 is shaped to allow the inserted latch bolt 31 to rotate freely in the radial direction. The hole 251 in the front plate cover 25 is shaped to restrict the rotation of the inserted latch bolt 31 in the radial direction. If the latch bolt 31 is not inserted into the hole 251 in the front plate cover 25, but only into the hole 221 in the front plate 22, it will not interfere with the edge of the hole 221 in the front plate 22 even if it rotates in the radial direction. If the latch bolt 31 is inserted into the hole 251 in the front plate cover 25, attempting to rotate it in the radial direction will cause it to interfere with the edge of the hole 251 in the front plate cover 25, thus restricting its rotation.

[0018] When installing the box lock 1, with the front plate cover 25 not yet attached, the latch bolt 31 is rotated in the radial direction to adjust its orientation to match the opening direction of the door 11. After adjusting the orientation of the latch bolt 31, the front plate cover 25 is attached to restrain the rotation of the latch bolt 31 in the radial direction. By restraining the rotation of the latch bolt 31 in the radial direction after adjusting its orientation to the desired direction, the latch bolt 31 will not rotate in the radial direction and obstruct the opening and closing of the door 11.

[0019] The front plate 22 has set screw holes through which set screws 261 and 262 pass in the door width direction. The front plate cover 25 is provided with a projection with a hollow hole that protrudes toward the hinge side and fits into the set screw holes. When installing the box lock 1 on the door 11, follow these steps: Position the box lock 1 on the door 11, cover the door edge side of the front plate 22 with the front plate cover 25, and fit the projection of the front plate cover 25 into the set screw holes of the front plate 22. Fasten the set screws 261 and 262 by passing them through the hollow holes of the projection. In this way, the box lock 1, door 11, and front plate cover 25 are fixed together. The set screws 261 and 262 may be countersunk screws, pan head screws, truss head screws, low-profile screws, flat head screws, etc., and the type of screw is not limited. The screw head hole shape of set screws 261 and 262 is also not limited to Phillips, slotted, hexagonal socket, hexalobular, etc.

[0020] The door handle 33, handle hub 34, and handle gear section 35 are rotatable together around the axis 332 of the shaft portion 331 of the door handle 33 between the closed position shown in Figure 3 and the open position shown in Figure 4. The axis 332 of the shaft portion 331 of the door handle 33 extends in the direction of the interior and exterior.

[0021] The rack gear section 32 has linear tooth profiles extending in the width direction formed on its lower and upper edges. The tooth profile on the lower edge of the rack gear section 32 is referred to as the opening / closing rack gear 321. The tooth profile on the upper edge of the rack gear section 32 is referred to as the locking / unlocking rack gear 322. The upper part of the handle gear section 35 has a tooth profile formed on its outer circumference that follows the axis 332 of the shaft portion 331 of the door handle 33. The tooth profile of the handle gear section 35 is referred to as the handle gear 351.

[0022] The handle gear section 35 is located below the rack gear section 32. The handle gear 351 is engaged with the opening / closing rack gear 321. When the door handle 33 is operated and the handle gear section 35 rotates around the axis 332, the rotation of the handle gear 351 causes the opening / closing rack gear 321 to move in the door width direction, and the rack gear section 32 also moves in the door width direction. By rotating around the axis 332 and changing its orientation, the handle gear section 35 can position the rack gear section 32 in the closed and open positions. Of the orientations of the handle gear section 35, the orientation in which the rack gear section 32 is positioned in the closed position, as shown in Figure 3, is referred to as the closed position. Of the orientations of the handle gear section 35, the orientation in which the rack gear section 32 is positioned in the open position, as shown in Figure 4, is referred to as the open position. The handle gear 351 of the handle gear section 35 in the closed position is located closer to the door edge than the handle gear 351 of the handle gear section 35 in the open position.

[0023] The locking / unlocking device 4 locks the door 11 by restraining the rack gear section 32 in the closed position and positioning the latch bolt 31 in the closed position when the door 11 is closed, and unlocks it by allowing the rack gear section 32 to move in the door width direction. Hereinafter, the state in which the locking / unlocking device 4 restrains the rack gear section 32 in the closed position and positioning the latch bolt 31 in the closed position will be referred to as the locked state, and the state in which the rack gear section 32 is allowed to move in the door width direction will be referred to as the unlocked state. The orientation and position of the components constituting the locking / unlocking device 4 change between the locked state and the unlocked state. For each component, the orientation and position for the locked state will be referred to as the locked orientation and locked position, and the orientation and position for the unlocked state will be referred to as the unlocked orientation and unlocked position.

[0024] As shown in Figures 2, 3, and 5, the locking / unlocking device 4 comprises a locking / unlocking section 5, a manual rotating section 6, an electric rotating section 7, and an electric motor 9. The locking / unlocking section 5 is a rotatable member. The locking / unlocking section 5 rotates between a locked position and an unlocked position. The manual rotating member 61 of the manual rotating section 6 rotates by manual operation to switch between the locked position and the unlocked position. The electric rotating section 7 rotates by electric operation to switch between the locked position and the unlocked position of the locking / unlocking section 5. The rotation axis of the locking / unlocking section 5, the rotation axis of the manual rotating member 61, and the rotation axis of the electric rotating section 7 each extend in the indoor / outdoor direction and are arranged coaxially. The rotation axis of the locking / unlocking section 5, the rotation axis of the manual rotating member 61, and the rotation axis of the electric rotating section 7 are all referred to as rotation axis 4a.

[0025] As shown in Figures 5 and 6, the locking / unlocking section 5 has a locking / unlocking plate section 51, a first projection 52, and a second projection 53. The locking / unlocking plate section 51 is a sector gear. The locking / unlocking plate section 51 is flat and its surface is sector-shaped. The locking / unlocking plate section 51 has teeth 511 formed on the edges corresponding to the arc of the sector. The teeth 511 formed on the locking / unlocking plate section 51 are referred to as the sector gear 511. The locking / unlocking plate section 51 is arranged so that its surface faces in the direction of indoors or outdoors. A circular hole 512 is formed in the part of the locking / unlocking plate section 51 that passes through the surface, corresponding to the center of the arc of the sector. The axis of rotation 4a of the locking / unlocking section 5 is a straight line passing through the center of the hole 512. The locking / unlocking plate section 51 is arranged so that the hole 512 is on the upper side and the sector gear 511 is on the lower side. In other words, the sector gear 511 is positioned below the rotating shaft 4a. Below the rotating shaft 4a, the sector gear 511 rotates around the rotating shaft 4a by a predetermined angle and moves in the direction of the door width.

[0026] The first projection 52 protrudes from near the lower end of the hinge-side edge of the locking / unlocking plate portion 51 toward the hinge side and further toward the outside. The second projection 53 protrudes from near the upper end of the door-side edge of the locking / unlocking plate portion 51 toward the door-side and further toward the outside. The second projection 53 is the first rotational restraint portion of the claims.

[0027] As shown in Figures 3 and 4, the locking / unlocking section 5 is positioned above the rack gear section 32. The fan-shaped gear 511 of the locking / unlocking plate section 51 meshes with the locking / unlocking rack gear 322 on the upper edge of the rack gear section 32. The locking / unlocking section 5 and the rack gear section 32 are interlocked.

[0028] The manual rotating part 6 and the electric rotating part 7 can restrain the locking / unlocking part 5 in the locked position. Figure 7 shows the locking / unlocking part 5 restrained in the locked position by the manual rotating part 6. Figure 8 shows the locking / unlocking part 5 restrained in the locked position by the electric rotating part 7. When the locking / unlocking part 5 is restrained in the locked position, the rack gear part 32 is restrained in the closed position. When the rack gear part 32 is restrained in the closed position, the rotation of the door handle 33 is also restrained. When the door 11 is closing the opening and the rack gear part 32 is restrained in the closed position, the latch 311 of the latch bolt 31 is kept inserted into the strike 12, so the door 11 cannot be opened and remains locked.

[0029] When the locking / unlocking unit 5 is not constrained to the locked position and is allowed to rotate around the rotation axis 4a, the rack gear unit 32 and the latch bolt 31 can be moved to the open position by operating the door handle 33, and the unit is not locked. The unlocked state is when the locking / unlocking unit 5 is not constrained to the locked position. The sector gear 511 of the locking / unlocking unit 5 in the locked position shown in Figures 7 and 8 is located at the door-edge end within its range of motion. When the locking / unlocking unit 5 in the locked position rotates by a predetermined angle around the rotation axis 4a so that the sector gear 511 faces the hinge side, it enters the unlocked position.

[0030] As shown in Figure 5, the manual rotation section 6 includes a manual rotation member 61, a torsion coil spring 62, and a manual rotation restraint section 8. As shown in Figures 5 and 9, the manual rotation member 61 includes a thumbturn shaft connecting section 63, an arm section 64, a flange section 65, and a first spring mounting section 66. The first spring mounting section 66 is shown in Figure 9. The thumbturn shaft connecting section 63, the arm section 64, the flange section 65, and the spring mounting section 66 are integrally formed members. The manual rotation restraint section 8 is linked to the arm section 64. The manual rotation restraint section 8 is the second rotation restraint section of the claims.

[0031] The thumbturn shaft connecting portion 63 is cylindrical. The thumbturn shaft connecting portion 63 has a hole 631 into which the shaft portion of the thumbturn 41 is inserted. The thumbturn shaft connecting portion 63 is positioned so that its axis extends in the indoor-outdoor direction. The manual rotating member 61 is supported so as to be rotatable around the rotation axis 4a of the manual rotating portion 6. The rotation axis of the manual rotating member 61 is also referred to as the rotation axis 4a. The rotation axis 4a of the manual rotating member 61 is the central axis of the thumbturn shaft connecting portion 63. As shown in Figures 2 and 5, the thumbturn shaft connecting portion 63 is inserted into the hole 512 of the locking / unlocking portion 5. As described above, the manual rotating member 61 is positioned coaxially with the locking / unlocking portion 5. The manual rotating member 61 is rotatable relative to the locking / unlocking portion 5 around the rotation axis 4a.

[0032] As shown in Figures 5 and 9, the arm portion 64 protrudes radially from a part near the outdoor edge of the thumbturn shaft connecting portion 63, perpendicular to the central axis of the thumbturn shaft connecting portion 63. The flange portion 65 protrudes radially from a part near the outdoor edge of the thumbturn shaft connecting portion 63, perpendicular to the axis of the thumbturn shaft connecting portion 63, i.e., the rotation axis 4a. The arm portion 64 and the flange portion 65 are adjacent to each other in the circumferential direction of the thumbturn shaft connecting portion 63. The arm portion 64 protrudes radially outward from the flange portion 65.

[0033] As shown in Figure 9, the first spring mounting portion 66 is provided projecting outward from the outdoor-facing surface of the flange portion 65. The first spring mounting portion 66 is cylindrical in shape. The first spring mounting portion 66 is positioned to extend in the indoor-outdoor direction. One end 621 of the torsion coil spring 62 is attached to the first spring mounting portion 66. As shown in Figures 5 and 7, the other end 622 of the torsion coil spring 62 is attached to the second spring mounting portion 211 provided on the housing 21.

[0034] The manual rotation restraint unit 8 moves vertically in conjunction with the rotation of the arm unit 64. As shown in Figure 7, when the manual rotation restraint unit 8 is positioned at the lower end of the range of motion, it is positioned on the rotational trajectory of the first projection 52 of the locking / unlocking unit 5. When the manual rotation restraint unit 8 is positioned at the lower end, the locking / unlocking unit 5 is in the locked position. When the manual rotation restraint unit 8 is positioned at the lower end, it contacts the first projection 52 of the locking / unlocking unit 5 in the locked position from the suspension side. By contacting the manual rotation restraint unit 8, the locking / unlocking unit 5 in the locked position is restrained from rotating toward the suspension side, i.e., from rotating toward the unlocked position.

[0035] As shown in Figure 3, when the manual rotation restraint part 8 is positioned at the upper end of the range of motion, it is positioned outside the rotational trajectory of the first projection 52 of the locking / unlocking part 5. When the manual rotation restraint part 8 is positioned at the upper end, rotation of the locking / unlocking part 5 is permitted. The lower end position where the manual rotation restraint part 8 is positioned and the rotation of the locking / unlocking part 5 is restrained is referred to as the locked position. The upper end position where the manual rotation restraint part 8 is positioned and the rotation of the locking / unlocking part 5 is not restrained is referred to as the unlocked position.

[0036] As shown in Figures 5 and 10, the manual rotation restraint unit 8 includes a lower block portion 81, an upper block portion 82, a pin 83, and a guided portion 84. The pin 83 is shown in Figure 10. The lower block portion 81 is located below the upper block portion 82. The lower block portion 81, the upper block portion 82, the pin 83, and the guided portion 84 are integrally formed members.

[0037] As shown in Figure 10, the lower block portion 81 has a stepped portion 817 formed on the suspension side. The end face 812 on the suspension side of the lower block portion 81 above the stepped portion 817 protrudes towards the suspension side more than the end face 815 on the suspension side below the stepped portion 817. The downward-facing surface located in the vertical middle of the suspension side of the lower block portion 81 and forming the stepped portion 817 is referred to as the lower stepped portion surface 818.

[0038] The upper block portion 82 is smaller in dimensions in the indoor / outdoor direction and in the door width direction than the lower block portion 81. The indoor end face 813 of the lower block portion 81 is located on the indoor side than the indoor end face 823 of the upper block portion 82. The outdoor end face 814 of the lower block portion 81 is located on the outdoor side than the outdoor end face 824 of the upper block portion 82. The upper end face 815 of the lower block portion 81 is exposed on both the outdoor and indoor sides of the upper block portion 82. The corner 816 formed by the upper end face 815 of the lower block portion 81 and the door edge end face 811 is an arcuate surface that protrudes toward the door edge and upward.

[0039] Pin 83 protrudes outward from the outdoor-facing surface 824 of the upper block portion 82. Pin 83 is located in the middle of the upper block portion 82 in the vertical direction. Pin 83 and the upper end surface 815 of the lower block portion 81, which is on the outdoor side of the upper block portion 82, are separated in the vertical direction. An arm portion 64 is inserted between pin 83 and the upper end surface 815 of the lower block portion 81. The space between pin 83 and the upper end surface 815 of the lower block portion 81 is referred to as the arm insertion portion 85.

[0040] The guided portion 84 is provided on both the indoor and outdoor sides of the lower block portion 81. The guided portion 84 on the indoor side of the lower block portion 81 protrudes indoors from the indoor side 813 of the lower block portion 81. The guided portion 84 on the outdoor side of the lower block portion 81 protrudes outdoors from the outdoor side 814 of the lower block portion 81. The guided portion 84 is inserted into a guide groove portion 212 provided in the housing 21 shown in Figure 5. The guide groove portion 212 extends in the vertical direction. The manual rotation restraint portion 8 moves vertically along the guide groove portion 212.

[0041] As shown in Figures 11 and 12, when the manual rotation restraint unit 8 is in the unlocked position, the arm portion 64 of the manual rotation unit 6 is inserted into the arm insertion portion 85 from the door edge side. The manual rotation member 61 is in a position where the arm portion 64 protrudes from the thumbturn shaft connecting portion 63 toward the door edge side. In this state, the pin 83 rests on the arm portion 64. This maintains the manual rotation restraint unit 8 in the unlocked position, i.e., the upper end position.

[0042] As shown in Figure 13, when the manual rotating member 61 rotates the arm portion 64 downwards from this state, the upper end surface 815 of the lower block portion 81 is pushed downwards, and the pin resting on the arm portion 64 also moves downwards, causing the manual rotation restraint portion 8 to move downwards. As shown in Figures 14 and 15, when the arm portion 64 rotates further downwards, the arm portion 64 disengages from the arm insertion portion 85 of the manual rotation restraint portion 8, which has moved downwards along with the arm portion 64. When the arm portion 64 disengages from the arm insertion portion 85, the lower step portion 818 of the manual rotation restraint portion 8 comes into contact with the upward-facing stopper surface 213 provided on the housing 21, stopping its downward movement. As a result, the manual rotation restraint portion 8 is stably maintained in the locked position, i.e., the lower end position.

[0043] When the thumbturn 41 is operated and the manual rotating member 61 rotates from the locked position to the unlocked position, the arm portion 64 moves from the bottom to the top. When the arm portion 64 rotates by a predetermined angle, it enters the arm insertion portion 85, and when it rotates further upward, it pushes up the pin 83, moving the manual rotation restraint portion 8 upward and positioning it in the unlocked position. When the manual rotation restraint portion 8 is positioned in the unlocked position, the upper end surface 825 of the upper block portion 82 is in contact with or slightly gaped from the downward surface 216 of the wall portion provided on the housing 21. This prevents the manual rotation restraint portion 8 from coming out of the guide groove portion 212 and moving above the unlocked position, i.e., the upper end position.

[0044] The corner 641 of the arm portion 64, which is on the lower side when the arm portion 64 is in the unlocked position, is an arcuate surface that protrudes toward the tip and downward. As described above, the corner 816 formed by the upper end surface 815 of the lower block portion 81 and the door-side end surface 811 is an arcuate surface that protrudes toward the door-side and upward. When the arm portion 64 enters between the pin 83 of the manual rotation restraint portion 8 and the lower block portion 81, and when it disengages from the arm insertion portion 85 of the manual rotation restraint portion 8, the corner 641 of the arm portion 64 and the corner 816 of the lower block portion 81 come into contact. Because the corner 641 of the arm portion 64 and the corner 816 of the lower block portion 81 are both arcuate surfaces, the arm portion 64 can move smoothly without getting caught on each other when entering the arm insertion portion 85 and when disengaging from the arm insertion portion 85. The corner 641 of the arm portion 64 and the corner 816 of the lower block portion 81 may be curved surfaces or corners, rather than being arc-shaped surfaces.

[0045] When the manual rotating member 61 moves from the unlocked position shown in Figures 11 and 12 to the locked position shown in Figures 14 and 15, the first spring mounting portion 66 approaches the second spring mounting portion 211, and the torsion coil spring 62 is compressed. In the locked position, the manual rotating member 61 is pushed in the direction of the unlocked position by the restoring force of the torsion coil spring 62. Therefore, when manually changing the thumbturn 41 from the locked position to the unlocked position, the thumbturn 41 can be changed from the locked position to the unlocked position with little force.

[0046] As shown in Figures 3, 5, and 8, the electric motor 9 is positioned so that its shaft 91 extends in the width direction. A worm gear 92 is attached to the shaft 91 of the electric motor 9. The worm gear 92 rotates together with the rotation of the shaft 91 of the electric motor 9.

[0047] As shown in Figures 5 and 16, the electric rotating unit 7 has a cylindrical cylindrical portion 71 and a gear portion 72 protruding from the outer circumference of the cylindrical portion 71. The cylindrical portion 71 and the gear portion 72 constitute a worm wheel that rotates in conjunction with the worm gear 92. The worm gear 92 is rotated by the drive of the electric motor 9. The rotation axis 4a of the electric rotating unit 7 is the central axis of the cylindrical portion 71.

[0048] The gear portion 72 protrudes radially outward from a part of the outer circumference of the cylindrical portion 71. The outer surface of the gear portion 72 is formed in an arc shape coaxial with the cylindrical portion 71 and having a larger radius of curvature than the cylindrical portion 71. A tooth profile 723 that meshes with the worm gear 92 is formed on the outer surface of the gear portion 72. The end face on one side of the gear portion 72 in the circumferential direction is denoted as the first end face 721. The end face on the other side of the gear portion 72 in the circumferential direction is denoted as the second end face 722. The first end face 721 is not a surface aligned radially, and its outer end 721a is positioned on the other side of the circumferential direction than its inner end 721b. Similarly, the second end face 722 is not a surface aligned radially, and its outer end 722a is positioned on one side of the circumferential direction than its inner end 722b.

[0049] The thumbturn shaft connecting portion 63 of the manual rotating portion 6 is inserted into the hole 711 of the cylindrical portion 71 of the electric rotating portion 7. The electric rotating portion 7 is rotatable relative to the locking / unlocking portion 5 and the manual rotating member 61 around the rotation axis. As shown in Figure 5, the electric rotating portion 7 is positioned on the indoor side of the arm portion 64 and flange portion 65 of the manual rotating member 61. The locking / unlocking plate portion 51 of the locking / unlocking portion 5 is positioned on the indoor side of the electric rotating portion 7. The rotation trajectory of the second projection 53 of the locking / unlocking portion 5 and the rotation trajectory of the gear portion 72 of the electric rotating portion 7 partially overlap. The rotation trajectory of the first projection 52 of the locking / unlocking portion 5 and the rotation trajectory of the gear portion 72 of the electric rotating portion 7 do not overlap.

[0050] The electric rotating part 7 is rotatable from the unlocked position, which restricts the allowable rotation of the locking / unlocking part 5 as shown in Figures 3, 16, and 17, to the locked position, which restricts the rotation of the locking / unlocking part 5 as shown in Figures 8, 18, and 19. As shown in Figures 18 and 19, in the locked position of the electric rotating part 7, the first end face 721 of the gear part 72 is located on the door-edge side of the cylindrical part 71. The first end face 721 in the locked position is an inclined surface that gradually slopes downward and toward the door-edge side from the inner end 721b to the outer end 721a. In the locked position of the electric rotating part 7, the second end face 722 of the gear part 72 is located on the hinge side of the cylindrical part 71. The second end face 722 in the locked position is an inclined surface that gradually slopes downward and toward the hinge side from the inner end 722b to the outer end 722a.

[0051] As shown in Figures 16 and 17, in the unlocked position of the motorized rotating part 7, the first end face 721 of the gear part 72 is located on the hinge side of the cylindrical part 71, rather than on the door-side end. The first end face 721 in the unlocked position is a vertical plane. In the unlocked position of the motorized rotating part 7, the second end face 722 of the gear part 72 is located on the hinge side of the cylindrical part 71, at a height near the upper end of the cylindrical part 71. The second end face 722 in the unlocked position is a horizontal plane.

[0052] As shown in Figures 8 and 19, when the locking / unlocking unit 5 is in the locked position and the electric rotating unit 7 is in the locked position, the first end face 721 of the electric rotating unit 7 contacts the second projection 53 of the locking / unlocking unit 5 from below and from the hinge side. The second projection 53 is sandwiched between the projection 215 that protrudes downward from the upper wall 214 of the housing 21 and the first end face 721. The projection 215 is the first restricting part of the claims. The projection 215 restricts the rotation of the locking / unlocking unit 5. When the electric rotating unit 7 is fixed in the locked position, the locking / unlocking unit 5 cannot rotate toward the unlocked position and is constrained to the locked position. This results in a locked state. Even when the locking / unlocking part 5 is in the unlocked position, when the electric rotating part 7 rotates from the unlocked position to the locked position, the first end face 721 of the electric rotating part 7 comes into contact with the second projection 53 of the locking / unlocking part 5 from below and from the hinge side, causing the locking / unlocking part 5 to rotate together with the electric rotating part 7 and assume the locked position.

[0053] As shown in Figures 3 and 17, the first end face 721 of the electric rotating part 7 separates from the second projection 53 of the locking / unlocking part 5 when it is in the unlocked position. When the electric rotating part 7 is in the unlocked position, the locking / unlocking part 5 is rotatable between the locked position and the unlocked position. The second end face 722 of the electric rotating part 7 contacts the upper wall portion 214 of the housing 21 when it is in the unlocked position. When the second end face 722 of the electric rotating part 7 contacts the upper wall portion 214 of the housing 21, further upward rotation of the second end face 722 of the electric rotating part 7 is restrained. The upper wall portion 214 is the second restricting portion of the claims. The upper wall portion 214 restricts the rotation range of the electric rotating part 7.

[0054] The locking / unlocking device 4 has the rotation axis of the locking / unlocking unit 5, the rotation axis of the manual rotating member 61, and the rotation axis of the electric rotating unit 7 arranged coaxially. Compared to conventional locking / unlocking devices in which the rotation axes of the manual rotating unit and the electric rotating unit are arranged separately, the locking / unlocking device 4 can be made smaller and more space-saving. Both the manual rotating unit 6 and the electric rotating unit 7 restrict the rotation of the locking / unlocking unit 5 to lock it, and allow the rotation of the locking / unlocking unit 5 to unlock it. Common components are used for locking and unlocking of both the manual rotating unit 6 and the electric rotating unit 7. As a result, the locking / unlocking device 4, the box lock 1, and the door 11 can be made smaller and more space-saving.

[0055] The locking / unlocking device 4 can be operated both manually by the manual rotating part 6 and electrically by the electric rotating part 7. However, in a locking / unlocking device 4 that can be equipped with both the manual rotating part 6 and the electric rotating part 7, as shown in Figures 20 and 21, it is possible to create a locking / unlocking device that only performs manual operation by omitting the electric rotating part 7 and instead providing a collar 67 with the same axial length as the electric rotating part 7 between the locking / unlocking plate part 51 and the flange part 65 of the manual rotating member 61 on the manual rotating part 6. When electrical operation is not required, an inexpensive locking / unlocking device can be selected by using the above configuration shown in Figures 20 and 21. Furthermore, if, for example, a renovation is carried out in the future to add an electric operation function to a locking / unlocking device that only performs manual operation, the entire box lock can be replaced as is with the locking / unlocking device that has the electric operation function added, so no new processing of the door is required, making it economical.

[0056] The locking / unlocking plate portion 51 of the locking / unlocking mechanism 5 is a sector gear. The locking / unlocking plate portion 51 can be made smaller compared to the case of a circular gear.

[0057] The electric rotating section 7 has a worm wheel that rotates in conjunction with a worm gear 92 attached to the shaft of the electric motor 9. When the worm wheel of the electric rotating section 7 is in the locked position and comes into contact with the second projection 53 of the locking / unlocking section 5, the locking / unlocking section 5 is restrained in the locked position and becomes locked. The locking / unlocking device 4 does not require a link member or the like to be provided between the worm wheel of the electric rotating section 7 and the locking / unlocking section 5. Therefore, the locking / unlocking device 4 can be made smaller and more space-saving.

[0058] The manual rotation unit 6 has a manual rotation restraint unit 8 that is interlocked with the arm unit 64 of the manual rotation member 61. When in the locked position, the manual rotation restraint unit 8 is positioned on the rotational trajectory of the locking / unlocking unit 5 and restrains the rotation of the locking / unlocking unit 5 to lock it. When in the unlocked position, the manual rotation restraint unit 8 is positioned in the unlocked position, away from the rotational trajectory of the locking / unlocking device 4, and allows the rotation of the locking / unlocking unit 5 to unlock it. The locking / unlocking device 4 does not require a link member or the like to be provided between the manual rotation member 61 and the locking / unlocking unit 5. Therefore, the locking / unlocking device 4 can be made smaller and more space-saving.

[0059] The projection 215 of the housing 21 restricts the rotation range of the locking / unlocking part 5. In other words, the housing 21 can be used as a component that restricts the rotation range of the locking / unlocking part 5. Compared to the case where a component that restricts the rotation range of the locking / unlocking part 5 is provided inside the housing 21 separately from the housing 21, the number of parts in the box lock 1 and the locking / unlocking device 4 can be reduced.

[0060] The upper wall portion 214 of the housing 21 restricts the rotation range of the electric rotating part 7. In other words, the housing 21 can be used as a component that restricts the rotation of the electric rotating part 7. Compared to the case where a component that restricts the rotation of the electric rotating part 7 is provided inside the housing 21 separately from the housing 21, the number of parts of the box lock 1 and the locking / unlocking device 4 can be reduced.

[0061] The hole 221 in the front plate 22 is shaped to allow the inserted latch bolt 31 to rotate freely in the axial direction. The hole 251 in the front plate cover 25 is shaped to restrict the rotation of the inserted latch bolt 31 in the axial direction. When installing the box lock 1, with the front plate cover 25 not yet installed, the latch bolt 31 can be rotated in the axial direction to adjust its orientation to match the opening direction of the door 11. After adjusting the orientation of the latch bolt 31, the front plate cover 25 is installed to restrict the rotation of the latch bolt 31, preventing it from rotating and obstructing the opening and closing of the door 11.

[0062] This disclosure is not limited to the embodiments described above and can be modified as appropriate. For example, the locking / unlocking plate portion 51 of the locking / unlocking portion 5 may be a circular gear instead of a sector gear. In either the case of a sector gear or a circular gear, the tooth profile may be spur teeth or helical teeth.

[0063] The electric rotating part 7 may be equipped with a planetary gear instead of a worm wheel. When a planetary gear is used, for example, the sun gear is rotated by the drive of an electric motor, and one of the internal gears, which are arranged in two or more stages, rotates via the planetary gear. In this way, a locking and unlocking device similar to the above can be realized. The electric rotating part 7 may contact parts of the locking and unlocking part 5 other than the second protrusion 53 to restrain the locking and unlocking part 5 in the locked position. A member that is interlocked with the electric rotating part 7 may contact the locking and unlocking part 5 to restrain the locking and unlocking part 5 in the locked position.

[0064] In the above embodiment, the worm gear 92 is rotated by the power of the electric motor 9. The worm gear 92 may also be rotated by manual operation instead of the electric motor 9. For example, the worm gear 92 may be rotated by manually rotating the gripping knob. When the worm gear 92 is rotated by an electric motor such as the electric motor 9, the system may be configured to emit an operation completion signal to indicate that the worm wheel has entered either the locked or unlocked position due to the rotation of the worm gear 92. For example, the system may detect the increase in current when the worm wheel is in either the locked or unlocked position and emit a signal according to the increase in current. A contact sensor may be provided inside the housing 21 that makes contact when the worm wheel is in either the locked or unlocked position, and the system may emit an operation completion signal upon detection by the contact sensor. Instead of a contact sensor, a magnetic sensor or an optical sensor may be used to detect whether the worm wheel is in either the locked or unlocked position.

[0065] The manual rotating part 6 may directly contact the locking / unlocking part 5 and restrain the locking / unlocking part 5 in the locked position without providing a manual rotation restraining part 8. The configuration in which the manual rotating member 61 moves the manual rotation restraining part 8 may be other than that described above.

[0066] The housing 21 has a projection 215 that restricts the rotation of the locking / unlocking part 5. The first restricting part that restricts the rotation of the locking / unlocking part 5 may be a separate component from the housing 21. The housing 21 has an upper wall portion 214 that restricts the rotation of the electric rotating part 7. The upper wall portion 214 of the housing 21 restricts the rotation range of the electric rotating part 7. The second restricting part that restricts the rotation of the electric rotating part 7 may be a separate component from the housing 21.

[0067] The box lock 1 is installed on a hinged door 11, but it may also be installed on a door other than a hinged door. In the above embodiment, the locking / unlocking device 4 locks and unlocks by restricting the movement of the latch bolt 31. The box lock 1 may also be provided with a deadbolt, and the locking / unlocking unit 5 may lock and unlock by restricting the movement of the deadbolt instead of the rack gear unit 32 and the latch bolt 31.

[0068] The front plate cover 25 may be positioned to cover a portion of the front plate 22 on the door edge side. Both the hole 221 in the front plate 22 and the hole 251 in the front plate cover 25 may be shaped to allow the inserted latch bolt 31 to rotate freely in the axial direction. In such a case, it is preferable that the box lock 1 be provided with a member or mechanism that restrains the rotation of the latch bolt 31 in the axial direction when the box lock 1 is attached to the door 11. Both the hole 221 in the front plate 22 and the hole 251 in the front plate cover 25 may be shaped to restrain the rotation of the inserted latch bolt 31 in the axial direction. The front plate cover 25 and the front plate 22 may be in forms other than those described above. [Explanation of symbols]

[0069] 1 Box lock, 4 Locking / unlocking device, 4a Rotating shaft, 5 Locking / unlocking section, 6 Manual rotating section, 7 Electrically rotated section, 8 Manual rotation restraining section, 9 Electric motor, 11 Door, 21 Housing, 22 Front plate, 25 Front plate cover, 41 Thumbturn, 51 Locking / unlocking plate section, 52 First projection, 53 Second projection, 61 Manual rotating member, 63 Thumbturn shaft connecting section, 91 Shaft section, 92 Worm gear, 214 Upper wall section, 215 Projection section, 221 Hole section, 251 Hole section, 511 Sector gear

Claims

1. A locking / unlocking mechanism that enters a locked state when rotation is restricted and an unlocked state when rotation is permitted, A manual rotating part that rotates by manual operation to switch between the locked and unlocked states of the locking / unlocking part, It has an electrically operated rotating part that rotates to switch between the locked and unlocked states of the locking / unlocking part, The locking / unlocking device is configured such that the rotating shaft of the locking / unlocking unit, the rotating shaft of the manual rotating unit, and the rotating shaft of the electric rotating unit are arranged coaxially.

2. The locking / unlocking device according to claim 1, wherein the locking / unlocking part is a sector gear.

3. The aforementioned electric rotating unit is It comprises a worm wheel that rotates around the rotating shaft in conjunction with a worm gear attached to the shaft of an electric motor, The locking and unlocking device according to claim 1 or 2, further comprising a first rotational restraining part integrally and coaxially rotatably provided on either the electric rotating part or the locking and unlocking part, which contacts the other to restrain the rotation of the locking and unlocking part when the electric rotating part is in a position that locks the locking and unlocking part, and separates from the other to allow the rotation of the locking and unlocking part when the electric rotating part is in a position that unlocks the locking and unlocking part.

4. The manual rotating part is, The thumbturn shaft connecting part is connected to the thumbturn shaft and rotates around the rotation axis, An arm portion that protrudes from the outer circumference of the thumbturn shaft connecting portion and is rotatable integrally and coaxially with the thumbturn shaft connecting portion, It has a second rotational restraint part that is linked to the arm part, The locking and unlocking device according to claim 1 or 2, wherein the second rotational restraint portion is positioned on the rotational trajectory of the locking and unlocking portion to restrain the rotation of the locking and unlocking portion when the manual rotating portion is in a position to lock the locking and unlocking portion, and when the manual rotating portion is in a position to unlock the locking and unlocking portion, it moves out of the rotational trajectory of the locking and unlocking portion to allow the rotation of the locking and unlocking portion.

5. The locking / unlocking mechanism, the manual rotation mechanism, and the electric rotation mechanism are housed inside the casing of the box lock. The locking and unlocking device according to claim 1 or 2, wherein the housing is arranged on the rotational trajectory of the locking and unlocking part and has a first restricting part that restricts the rotational range of the locking and unlocking part when the locking and unlocking part comes into contact with it.

6. The locking / unlocking mechanism, the manual rotation mechanism, and the electric rotation mechanism are housed inside the casing of the box lock. The locking / unlocking device according to claim 1 or 2, wherein the housing is arranged on the rotational trajectory of the electric rotating part and has a second restricting part that restricts the rotational range of the electric rotating part when it comes into contact with the electric rotating part.

7. The casing and The enclosure has a locking / unlocking device housed inside the enclosure, The aforementioned locking / unlocking device, A locking / unlocking mechanism that enters a locked state when rotation is restricted and an unlocked state when rotation is permitted, A manual rotating part that rotates by manual operation to switch between the locked and unlocked states of the locking / unlocking part, It has an electrically operated rotating part that rotates to switch between the locked and unlocked states of the locking / unlocking part, The locking / unlocking mechanism's rotating shaft, the manual rotating mechanism's rotating shaft, and the electric rotating mechanism's rotating shaft are arranged coaxially in this box lock.

8. A latch bolt provided inside the housing and movable in the axial direction, A plate portion provided at the end of the housing, It further comprises a cover portion that covers at least a part of the plate portion, The plate portion and the cover portion each have holes formed through which the latch bolt passes in the axial direction. The hole in the plate portion is shaped so that the latch bolt can rotate around its axial diameter. The box lock according to claim 7, wherein the hole in the cover portion is shaped to restrain the rotation of the latch bolt around its axial diameter.

9. A door equipped with a box lock according to claim 7 or 8.

Images