JP2013209882A - Clutch mechanism of electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a clutch mechanism of an electric lock.SOLUTION: A cylindrical rotating body 310 where one surface side is connected to a thumb-turn shaft of a locking device and the opposite surface side is connected to a knob part for manually rotating the thumb-turn shaft is surrounded by a surrounding wall 314 of a housing 303 to restrict a rotation angle range. A clutch plate 308 which is rotationally driven is arranged inside the side wall 310a of the rotating body 310. The rotation of the clutch plate 308 can be transmitted to the rotating body 310 by two bearings 312 which are fitted into a set of two bearing holes 313 formed in the side wall 310a with a space in the circumferential direction and projections 311 which are installed on the outer peripheral surface of the clutch plate 308. One of the set of two bearings 312 escapes into an escape part 317 formed in the surrounding wall 314 to retreat from the projections 311 at a position restricting the movement of the rotating body 310, so that the reverse rotation of the rotating body 310 is not transmitted to the clutch plate 308 at the retreat position.

Description

  The present invention relates to an electric lock clutch mechanism that can be retrofitted to a door.

  In recent years, there have been many cases in which a key device installed on a door of a house is illegally unlocked by picking. For this reason, measures are taken such as replacing an existing key device with a picking countermeasure product or adding an auxiliary lock separately from the existing key device. However, whichever countermeasure is adopted, there is a disadvantage that the door must be processed or the user cannot work. In particular, in the case of rental housing, it is necessary to obtain the consent of the landlord when trying to process the door, and it is easy for the user to feel psychological difficulty.

  Therefore, conventionally, an electric lock of a system that can be retrofitted to the door by the user himself has been developed and put into practical use. As an example, Patent Document 1 discloses a retrofit type electric lock that covers and secures a thumb-turn knob without adding any processing to the door.

JP 2005-248457 A Japanese Patent Laid-Open No. 11-217962

  A clutch mechanism for an electric lock according to an aspect of the present invention includes a housing fixed to a door side, a surrounding wall provided in the housing, and a thumb turn shaft of a locking device provided in the door. One side is connected to the other and the other side is connected to a knob for manually rotating the thumb turn shaft, and a cylindrical rotating body that rotates around the axis, and the rotating body is rotatable only within a predetermined angle range. A movement restricting portion that restricts the movement of the rotating body, a clutch plate that is disposed with a gap inside the side wall of the rotating body and is driven by a driving source that generates a rotational driving force, and an axis of the rotating body. A pair of bearing holes formed in a circumferential direction at two locations on the side wall facing each other, and fitted into each of the bearing holes, and the outer peripheral surface of the clutch plate and the enclosure The inner surface of the wall The four bearings arranged between the two bearings and a pair of the bearings, and provided on the outer peripheral surface of the clutch plate with dimensions that do not get over the bearings, and rotate the clutch plate. Two protrusions that transmit to the rotating body and the surrounding wall are formed in a shape that gradually expands a gap between the rotating body and the surrounding wall as the rotating body approaches a position where movement is restricted, And four relief spaces for retracting only one of the two sets of bearings at a position where the rotating body is restricted and stopped so that the protrusion can get over the one bearing. .

It is a disassembled perspective view which shows a mode that the knob | pick part of the existing thumb turn is removed as one Embodiment, and a base member is fixed to a left hanging door. It is a perspective view which shows a base member from the back surface side. It is a disassembled perspective view which shows a mode that an electric lock structure is mounted | worn with the base member attached to the door of FIG. It is a disassembled perspective view which shows a battery case, a 1st terminal part, an electrical connection member, and a circuit board. It is a front view of a battery case. It is the perspective view of the drive part seen from the front side which decomposes | disassembles and shows a rotating shaft and a clutch board. (A) is a longitudinal front view of the clutch mechanism, and (b) is a longitudinal front view of the clutch mechanism in an abnormal state where the clutch plate stops at an inappropriate position. It is the perspective view of the drive part seen from the back side which decomposes | disassembles and shows the position detection part which detects whether a present position is a locking position or an unlocking position. It is a front view which shows the wiring pattern printed on the detection circuit board which the position detection part of a drive part has. It is a perspective view which shows the contact plate which the position detection part of a drive part has. It is a front view which shows the state which accommodated the drive part in the drive part accommodation space of the battery case, and was assembled | attached. It is the side view. It is a front view which shows the battery case which assembled | attached the drive part and the circuit board. It is a disassembled perspective view which shows a mode that a battery case cover and a knob | pick part are attached to the battery case which assembled | attached the drive part and the circuit board. It is a block diagram which shows the circuit structure of the control part mounted in the circuit board. It is a flowchart which shows the flow of the locking process which a control part performs. It is a flowchart which shows the flow of the unlocking process which a control part performs. It is a flowchart which shows the flow of the automatic locking process which a control part performs.

  An embodiment will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a state in which the knob 13 is removed from the thumb turn 12 of the existing locking device 11 and the base member 111 provided in the electric lock 101 (see FIG. 3) of the present embodiment is fixed to the left hanging door 51. FIG. In the present embodiment, description will be made for a left-hand hanging door. The electric lock 101 of this embodiment is an electric lock 101 that can be retrofitted using the existing locking device 11. In order to attach the electric lock 101 later, first, the decorative cover 14 of the locking device 11 attached to the door 51 is removed. Since the decorative cover 14 is screwed to the end face of the door 51 with two screws 15, the decorative cover 14 can be easily removed by loosening and removing the screws 15.

  When the decorative cover 14 is removed, the two pins 16 that fix the knob 13 of the thumb turn 12 disposed on the indoor side of the door 51 are exposed. These pins 16 extend into a mounting hole 52 formed in the door 51 to accommodate the thumb turn shaft 17 of the thumb turn 12 and are press-fitted into a fixing hole (not shown) formed in the knob portion 13. The knob 13 of the thumb turn 12 is prevented from coming off by press-fitting of the pins 16 and is fixed to the door 51. Therefore, when the pins 16 are pulled, the pins 16 fall out of the knob 13 in the mounting hole 52, and the knob 13 can be removed. When the knob 13 of the thumb turn 12 is removed, the mounting hole 52 is exposed. As shown in FIG. 1, the thumb turn shaft 17 is viewed in the mounting hole 52.

  In FIG. 1, reference numeral 18 denotes a dead bolt that appears and disappears from the door 51 as the thumb turn shaft 17 rotates.

  FIG. 2 is a perspective view showing the base member 111 from the back side. The base member 111 is a flat plate member formed by pressing a sheet metal. The base member 111 includes a pair of connecting pieces 112 formed by bending at the upper and lower edges, and a base member insertion hole 113 formed by punching at a lower center position (see FIG. 1). The base member insertion hole 113 is a hole through which a rotation shaft 124 (see FIGS. 3, 6, and 11 to 14) included in the drive unit 301 described later is inserted and connected to the thumb turn shaft 17. As shown in FIG. 2, a pin connector 114 is provided on the back surface side of the base member 111, that is, on the surface that is attached to the door 51. The pin connector 114 includes a connector insertion hole 115 that communicates with the base member insertion hole 113 and a pin hole 116 for press-fitting the pin 16 of the thumb turn 12 described above. The pin connector 114 is fixed by screws from the surface side of the base member 111 with two screws 117 (see FIG. 1).

  Next, as shown in FIG. 1, when the knob 13 of the thumb turn 12 is removed from the door 51, the base member 111 is attached at that position. To mount the base member 111, the pin connector 114 of the base member 111 is inserted into the mounting hole 52 that is exposed when the knob 13 is removed. When the pin connector 114 is inserted into the mounting hole 52, the back surface of the base member 111 eventually comes into contact with the door 51. In this state, the thumb turn shaft 17 is fitted into the connecting body insertion hole 115 of the pin connecting body 114, and the base member insertion hole 113 communicates with the thumb turn shaft 17. The pin hole 116 formed in the pin connector 114 is aligned with the position of the pin 16 of the thumb turn 12. Therefore, in order to remove the knob 13 of the thumb turn 12, the pin 16 of the thumb turn 12 once pulled out is pushed in again. Then, the pin 16 is press-fitted into the pin hole 116 formed in the pin connector 114, and the base member 111 is securely fixed to the door 51.

  FIG. 3 is an exploded perspective view showing a state in which the electric lock structure 121 is attached to the base member 111 attached to the door 51. In order to attach the electric lock 101 to the door 51, the electric lock structure 121 is attached to the base member 111 attached to the door 51 via the rubber packing 118, and the electric lock structure 121 attached to the base member 111 is further attached. A cover 131 is placed on the top.

  In the packing 118, a through hole 118 a for allowing the connecting piece 112 of the base member 111 to pass therethrough is formed. The electric lock structure 121 is provided with a mounting portion 122 aligned with the connecting piece 112. A screw hole 112 a is formed in the connecting piece 112 of the base member 111, and an attachment hole 122 a is formed in the attachment portion 122 of the electric lock structure 121. Therefore, the screw 123 inserted through the mounting hole 122a of the mounting portion 122 is screwed into the screw hole 112a of the connecting piece 112 that has passed through the through hole 118a of the packing 118, and tightened. Thereby, the electric lock structure 121 is firmly fixed to the base member 111.

  As another example, as a mounting structure of the existing knob 13, a rod-shaped mounting member (not shown) provided with a female screw cut at the rear of the key cylinder and projecting toward the thumb turn side is cut and cut into the key cylinder. There is a structure in which the rear portion of the key cylinder and the existing knob 13 are connected by screwing using a female screw. In the case where the knob portion 13 is fixedly attached to the door 51 using such a structure, the base member 111 may be fixedly attached to the door 51 with the same structure as the knob portion 13. That is, using the female screw cut in the key cylinder, the base member 111 is coupled to the rear portion of the key cylinder by screwing.

  The electric lock structure 121 includes a drive unit 301 (see FIGS. 6 to 14). As described above, the drive unit 301 has the rotation shaft 124. In FIG. 3, it can be seen that the rotation shaft 124 (124 a shown in FIG. 6) is positioned on the surface side of the electric lock structure 121. Although not shown in FIG. 3, the rotating shaft 124 is also positioned on the back side of the electric lock structure 121. Therefore, the rotating shaft 124 (124b shown in FIG. 6) located on the back side of the electric lock structure 121 faces the base member insertion hole 113 of the base member 111 via an adapter AP (see FIG. 12) described later. The thumb turn shaft 17 is inserted into a deformed hole 17 a and connected to the thumb turn shaft 17. The deformed hole 17 a is a hole having a shape other than a perfect circle, and transmits the rotation of the connected rotating shaft 124 to the thumb turn shaft 17. The packing 118 passes the rotating shaft 124 through the through hole 118b.

  The electric lock structure 121 has a leaf spring 125 on the top thereof. The leaf spring 125 protrudes slightly from the upper surface of the electric lock structure 121. On the other hand, the cover 131 is formed with a protrusion (not shown) that is hooked and stopped by the leaf spring 125 on the inner surface. Further, protrusions (not shown) that are hooked to each other are formed on the lower part of the electric lock structure 121 and the lower part of the inner side surface of the cover 131. Therefore, the lower part of the electric lock structure 121 and the lower part of the inner side surface of the cover 131 are hooked by their projections (not shown), and then the upper part of the cover 131 is pushed into the electric lock structure 121. Then, a projection (not shown) formed on the upper part of the inner side surface of the cover 131 is hooked on the leaf spring 125 of the electric lock structure 121, and the cover 131 is firmly attached to the electric lock structure 121.

  The cover 131 has a knob 132 (see FIGS. 3 and 14) for manually rotating the thumb turn shaft 17. The knob 132 is generally unlocked when the long side gripping part is in the vertical direction (the state of the knob 13 of the thumb turn 12 in FIG. 1) regardless of whether it is a right hanging door or a left hanging door. It is attached so as to be locked when it is in a direction (a state rotated by 90 ° from the state of FIG. 1). This knob 132 is fixed to the rotary shaft 124 located on the front side of the electric lock structure 121 with a screw and is connected to be prevented from rotating, so that the rotary shaft 124 can be manually rotated. When the rotation of the rotation shaft 124 is transmitted to the thumb turn shaft 17, the thumb turn shaft 17 rotates. Since the knob 132 used for manually rotating the thumb turn shaft 17 does not normally require manual operation, it is covered with a translucent cap 133 that is detachably attached to the cover 131. Yes.

  Thus, the operation of attaching the electric lock 101 to the door 51 is completed.

  Here, the details of the electric lock structure 121 will be described. The electric lock structure 121 is roughly divided into a battery case 201, a drive unit 301, a control unit 401, and a battery case cover 501. Hereinafter, each of these parts will be described.

  FIG. 4 is an exploded perspective view showing the battery case 201, the first terminal portion 402, the electrical connection member 403, and the circuit board 404. The battery case 201 is a resin molded product as an example, and has a shape such that a pair of battery storage portions 202 are bridge-coupled. For this reason, a space is formed between the pair of battery storage portions 202. This space is a drive unit storage space 203. The drive unit storage space 203 is used to store and hold the drive unit 301.

  The battery storage unit 202 opens both side surfaces of the battery case 201 and allows the battery 601 to be attached and detached from the opening. In this embodiment, four AA batteries are used as the battery 601 (see FIG. 3). Two of them are stored in one battery storage unit 202, and the other two are stored in the other battery storage unit 202. For this reason, the battery accommodating part 202 requires a terminal. In this embodiment mode, the first terminal portion 402 and the electrical connection member 403 serve as such terminals. The first terminal portion 402 is a member formed of a metal wire having conductivity and restoring force, and a negative terminal 402a that contacts the negative side of the AA battery that is the battery 601 and a positive terminal 402b that contacts the positive side. And have. The electrical connection member 403 is divided into two parts, each having a second terminal portion 405 at one end and a fixed connection portion 406 at the other end. These electrical connection members 403 are also members formed of metal wires having electrical conductivity and restoring force. The second terminal portion 405 formed at one end of one electrical connection member 403 has a minus terminal 405 a that contacts the minus side of the AA battery that is the battery 601. The second terminal portion 405 formed at one end of the other electrical connection member 403 has a plus terminal 405 b that contacts the plus side of the AA battery that is the battery 601. Fixed connection portions 406 formed at the other ends of the two electrical connection members 403 are fixed to the circuit board 404.

  Here, the minus terminals 402a and 405a are formed in a spiral shape, and the minus side of the AA battery, which is the battery 601, contacts the spiral portion with elasticity. The positive terminals 402b and 405b have a U-shaped bent shape, and the positive side of the AA battery that is the battery 601 contacts the U-shaped portion. The battery storage unit 202 is provided with a mounting groove 204 cut to the side end of the battery storage unit 202 as a structure for mounting the negative terminals 402a and 405a, and has a long structure as a structure for mounting the positive terminals 402b and 405b. A hole-shaped attachment long hole 205 is prepared. Therefore, to attach the first terminal portion 402 to the battery housing portion 202, the minus terminal 402a is inserted into the attachment groove 204 from the side, and then the plus terminal 402b is inserted into the attachment long hole 205, and the plus terminal 402a and the plus terminal 402a are attached. A terminal 402 b is provided in the battery storage unit 202. Further, in order to attach the electrical connection member 403 to the battery storage unit 202, the minus terminal 405 a of one electrical connection member 403 is inserted into the mounting groove 204 from the side. Then, the other plus terminal 405 b is inserted into the attachment long hole 205. Thereby, the minus terminal 405 a and the plus terminal 405 b are arranged in the battery storage unit 202.

  As described above, the fixed connection portions 406 of the two electrical connection members 403 are fixed to the circuit board 404. The fixed connection portion 406 is bent in a U shape, and a long hole-shaped fixing hole 407 into which the bent portion can be inserted is formed in the circuit board 404. These fixing holes 407 are connected to a printed wiring line (not shown) on the circuit board 404. Therefore, the fixed connection portion 406 of the two electrical connection members 403 can be fixed to the circuit board 404 by inserting the fixed connection portion 406 into the fixing hole 407 and soldering to the power supply line. It can also be connected to a line.

  With the above configuration, the AA batteries, which are the batteries 601 housed in the two battery housing parts 202 divided in two, are connected in series by the first terminal part 402. The four batteries 601 connected in series in this way are connected to the power supply line of the circuit board 404 by the electrical connection member 403. Since the circuit board 404 is arranged so as to overlap the battery case 201 (see also FIGS. 13 and 14), the component arrangement space of the electric lock 101 can be used effectively, and the space for mounting the battery 601 from the lateral direction as described later. Can be secured.

  FIG. 5 is a front view of the battery case 201. The battery case 201 forms a drive unit storage space 203 between the pair of battery storage units 202 in a shape suitable for storing and holding the drive unit 301 (see also FIG. 4). A rotation shaft insertion hole 206 for inserting the rotation shaft 124b of the drive unit 301 described above is formed in the bottom of the battery case 201 forming the drive unit storage space 203.

  The battery case 201 is positioned at the bottom of the drive unit storage space 203 to form two fixed pieces 207, and one fixed stud 208 is formed at a position away from the drive unit storage space 203. The fixing piece 207 is used to fix the driving unit 301 stored in the driving unit storage space 203 together with the battery case cover 501, and the fixing stud 208 is used to fix the battery case cover 501. Therefore, mounting holes 207a and 208a are formed in the fixing piece 207 and the fixing stud 208.

  Further, the battery case 201 has a board fixing stud 209 formed in each of the two battery storage portions 202 (see also FIG. 4). The board fixing stud 209 is used for screwing and fixing the circuit board 404 on which the control unit 401 is mounted. Therefore, a screw hole 209a is formed in the board fixing stud 209. The circuit board 404 is formed with mounting holes 408 aligned with the board fixing studs 209 (see FIG. 4).

  FIG. 6 is a perspective view of the drive unit 301 as seen from the front side showing the clutch mechanism 302 in an exploded manner. The drive unit 301 accommodates each part in a housing 303 in which the side where the rotation shaft 124 is located is formed in a deformed cylindrical shape, and the opposite side is formed in a triangle. The housing 303 is a resin product as an example. Such a housing 303 is divided into two and can be opened and closed. The member positioned at one of the two divided members is the back surface side member 303a, and the member positioned at the other side is the surface side member 303b. The back side member 303a has a position detection unit 304 (see FIGS. 8 to 10), which will be described later, in a deformed cylindrical portion. The surface side member 303b has a clutch mechanism 302 in a deformed cylindrical portion. The housing 303 has concave fitting grooves 306 located on the front and back surfaces on both the left and right sides, and the fitting grooves 306 have insertion holes 306a (see FIGS. 6 and 8). These fitting grooves 306 are used for fitting the fixing piece 207 formed in the battery case 201 and holding the drive unit 301 in the battery case 201 without any positional deviation. The insertion holes 306 a formed in the fitting grooves 306 are formed so as to be aligned with the mounting holes 207 a of the fixing piece 207, in order to fix the drive unit 301 to the battery case 201 together with the battery case cover 501. Used.

  The drive unit 301 has a drive shaft 307 rotatably in a deformed cylindrical part. The drive shaft 307 is for applying a rotational drive force to the rotary shaft 124 connected to the thumb-turn shaft 17 (see FIGS. 1 and 3), and a motor M (see FIG. 15) built in the housing 303. Rotates as a drive source. That is, in addition to the motor M, the housing 303 incorporates a power transmission mechanism that reduces the rotational force of the rotor shaft of the motor M to an optimum reduction ratio and transmits it to the drive shaft 307 (both not shown). And the motor M rotates so that forward / reverse rotation is possible according to an energization direction.

  FIG. 7A is a longitudinal front view of the clutch mechanism 302. The clutch mechanism 302 intermittently transmits the rotational force between the drive shaft 307 and the rotary shaft 124 so that the rotation of the drive shaft 307 rotated by a motor M (not shown) is transmitted to the rotary shaft 124 by a predetermined angle. It is a structure to do. The predetermined angle in this case is a rotation angle of the thumb turn shaft 17 required for the dead bolt 18 to appear and move in the thumb turn 12 (see FIG. 1). In order to intermittently transmit the rotational force between the drive shaft 307 and the rotary shaft 124, the clutch mechanism 302 connects the drive shaft 307 and the rotary shaft 124 with the clutch plate 308. That is, the outer surface of the drive shaft 307 has a cross-shaped cross section, and has a through hole 309 penetrating vertically in the center. The clutch plate 308 has the same shape as that of the outer surface of the drive shaft 307, and is provided with a fitting hole 308a that prevents the drive shaft 307 from rotating and the drive shaft 307 is fitted into the fitting hole 308a. Rotate according to rotation. One rotating shaft 124 is provided on both the front and back surfaces of a rotating member 310 having a cylindrical opening. The rotating shaft 124 provided on the front surface side of the rotating body 310 is a rotating shaft 124a formed in a quadrangular prism shape, and the rotating shaft 124 provided on the back surface side, which is the opening surface of the rotating body 310, has a cylindrical shape. The rotation shaft 124b has a tip that is substantially rectangular. One rotating shaft 124a is connected to the above-described knob portion 132 (see FIG. 3) and is rotated according to a manual rotation operation of the knob portion 132. The other rotating shaft 124 b is inserted through the through hole 309 formed in the drive shaft 307 and protrudes from the back surface of the drive unit 301. The other rotating shaft 124b passes through a rotating shaft insertion hole 206 (see FIGS. 4 and 5) formed in the battery case 201 and a through hole 118b (see FIG. 3) formed in the packing 118. They are connected to the deformed hole 17a of the thumb turn shaft 17 as seen through the mounting hole 52 of the door 51. An adapter AP formed in a deformed shape other than a perfect circle that fits in the deformed hole 17a of the thumb turn shaft 17 is detachably attached to the tip of the rotating shaft 124b (see FIG. 12). That is, the rotation shaft 124b can be connected to the various thumb turn shafts 17 only by exchanging with the adapter AP adapted to the deformed holes 17a of the thumb turn shafts 17 which are different from each other.

  As shown in FIG. 7A, in a state where the clutch plate 308 is attached to the drive shaft 307 and the rotary shaft 124b is inserted into the through hole 309 of the drive shaft 307 and the rotary body 310 is attached, The clutch plate 308 is disposed with a gap inside the side wall 310a. Therefore, the clutch plate 308 and the rotating body 310 are maintained in a non-contact state here. Therefore, as a structure for transmitting the rotation of the clutch plate 308 to the rotating body 310, a rotation transmission including a protrusion 311 provided on the outer peripheral surface of the clutch plate 308 and a bearing 312 provided on the side wall 310a of the rotating body 310 is provided. A mechanism is provided for (see also FIG. 6). That is, the rotator 310 has a pair of bearing holes 313 (two in total) at two locations on the side wall 310a facing each other with the axis therebetween, and these bearing holes 313 include The bearing 312 is fitted from the inner peripheral surface side of the rotating body 310. The bearing 312 has a slightly smaller diameter than the bearing hole 313. On the other hand, the housing 303 of the drive unit 301 has a surrounding wall 314 that surrounds the side wall 310 a of the rotating body 310 protruding from the surface side member 303 b, and the outer peripheral surface of the rotating body 310 is slightly in the surrounding wall 314. They are facing each other with a gap (see also FIG. 6). Therefore, the bearing 312 fitted in the bearing hole 313 of the rotating body 310 is disposed with a slight gap between the outer peripheral surface of the clutch plate 308 and the inner peripheral surface of the surrounding wall 314. The dimensions of each portion are determined so that the protrusion 311 provided on the outer peripheral surface of the shaft does not get over the bearing 312. Therefore, when the clutch plate 308 rotates according to the rotation of the drive shaft 307, the protrusion 311 provided on the outer peripheral surface pushes the bearing 312 to rotate the rotating body 310. As long as this is the case, the rotation of the drive shaft 307 is transmitted to the rotating body 310, and the rotating shaft 124 of the rotating body 310 is rotationally driven.

  The structure and operation of the clutch mechanism 302 will be described in more detail with reference to FIG. The surrounding wall 314 forms a movement restricting portion 315. The movement restricting portion 315 is positioned on the circumference including the side wall 310 a of the rotating body 310. Therefore, a part of the side wall 310 a of the rotating body 310 is a rotation allowable notch 310 b that is an area that does not interfere with the movement restricting portion 315. This rotation allowable notch 310b is formed in an angle range of 90 degrees. As a result, the rotating body 310 is rotatable only within an angle range of 90 degrees, and further rotation is restricted by the movement restricting unit 315. When the rotating body 310 is thus restricted by the movement restricting portion 315, the protrusion 311 of the clutch plate 308 pushes the bearing 312 to rotate the rotating body 310, so that the rotation of the clutch plate 308 is also prevented. Then, the motor M (not shown) built in the housing 303 is stepped out, and an excessive force is applied to the motor M. Therefore, the surrounding wall 314 forms relief spaces 317 on both sides of the movement restricting portion 315 that gradually increase the gap between the rotating body 310 and the surrounding wall 314 toward the movement restricting portion 315. The escape space 317 is formed in such a size that only one of the two sets of bearings 312 is positioned and the other bearing 312 is not allowed to enter. Therefore, if the drive shaft 307 rotates counterclockwise from the state shown in FIG. 7A, one of the two pairs of bearings 312 has escaped into the escape space 317. The protrusion 311 of 308 passes over one of the bearings 312 and passes over. When the protrusion 311 reaches the bearing 312 that is not retreated to the escape space 317, the protrusion 311 of the clutch plate 308 pushes the bearing 312. Thus, the rotating body 310 and the rotating shaft 124 integrated therewith are counterclockwise until the pushed bearing 312 reaches the escape space 317 located on the lower left side in FIG. 7A and escapes outward. Driven by rotation. Then, the rotating body 310 comes into contact with the movement restricting portion 315 and stops its rotation, and the above-mentioned bearing 312 that has been in contact so far enters the escape space 317, so that the protrusion 311 gets over the bearing 312 and advances a little. Stop at position.

  From this state, when the drive shaft 307 rotates counterclockwise in this direction, the protrusion 311 of the clutch plate 308 passes through one of the pair of bearings 312 escaping into the escape space 317 in the above description. Then, when it reaches the bearing 312 that has not been retracted into the escape space 317 by further rotating, the protrusion 311 of the clutch plate 308 pushes the bearing 312. As a result, the rotating body 310 and the rotating shaft 124 integrated therewith rotate clockwise until the pressed bearing 312 reaches the escape space 317 located on the upper left side in FIG. 7A and escapes outward. Driven. Then, the rotating body 310 comes into contact with the movement restricting portion 315 and stops its rotation, and the projection 311 stops at a position slightly advanced after getting over the bearing 312 described above. In this way, when the electric lock is driven by the motor M, the clutch plate 308 attached to the drive shaft 307 repeats reversal in an angle range of 180 °, and the rotating body 310 reverses in the angle range of 90 ° in conjunction with the clutch plate 308. repeat. In addition, as described above, the protrusion 311 of the clutch plate 308 stops after it has climbed over the bearing 312 in the escape space 317, so that when the knob portion 132 attached to the rotating body 310 is manually operated, The protrusion 311 and the bearing 312 can repeat the reciprocating operation from the locked position to the unlocked position and from the unlocked position to the locked position without interfering with each other. In this way, the clutch mechanism 302 intermittently transmits the rotational force between the drive shaft 307 and the rotary shaft 124.

  FIG. 7B is a longitudinal front view of the clutch mechanism 302 in an abnormal state where the clutch plate 308 is stopped at an inappropriate position. Here, the operation when the clutch plate 308 stops and stops moving at the position shown in FIG. 7B will be described. Even in such a case, the clutch plate 308 allows the protrusion 311 to move toward the center of rotation so that the operation of the knob 132 can be manually performed, and the urging member 316 moves the movable protrusion 311 in the outer circumferential direction. It is trying to urge towards. When the rotating body 310 connected to the knob 132 is rotated counterclockwise from the state of FIG. 7B, one of the bearings 312 that moves together with the rotating body 310 contacts the protrusion 311 of the clutch plate 308. When the knob 132 is further operated counterclockwise from this state, the protrusion 311 of the clutch plate 308 is retracted toward the center of the clutch plate 308 and gets over the bearing 312. In this way, even when the clutch plate 308 stops at a position in the middle of rotation, the bearing 312 gets over the protrusion 311, so that the knob portion 132 can be rotated.

  FIG. 8 is a perspective view of the drive unit 301 as seen from the back side showing the position detection unit 304 that detects whether the position of the knob 132 is currently locked or unlocked. The position detection unit 304 is attached to one rear side member 303 a forming the housing 303. The back side member 303a has a stepped portion 318 that is lowered by one step in the deformed cylindrical portion, and a detection circuit plate 319 and a contact plate 320 are built in the stepped portion 318, and a lid portion 321 is attached to be freely opened and closed. ing. The step portion 318 has three studs 322 formed at a three-point support position. In the stud 322 formed in this manner, the position of the detection circuit board 319 is fixed in a fitted state, and the lid portion 321 is fastened and fixed by a screw 323.

  The drive shaft 307 is exposed at the step portion 318. From the through hole 309 formed in the drive shaft 307, the rotating shaft 124b fixed to the rotating body 310 protrudes (see FIGS. 6 and 12). Therefore, in order to pass such 124b, a substrate hole 319a is formed in the detection circuit board 319, and a lid hole 321a is formed in the lid portion 321. Further, the contact plate 320 has a fitting cylinder 324 through which the drive shaft 307 is inserted through the board hole 319a formed in the detection circuit board 319 and exposed to the step portion 318 (see FIG. 10). A rotating shaft 124b that protrudes from the through hole 309 is connected to the fitting cylinder 324 in a non-rotating manner (see FIGS. 6 and 12).

  FIG. 9 is a front view showing a wiring pattern 325 printed on the detection circuit board 319 included in the position detection unit 304 of the drive unit 301. The detection circuit board 319 includes a wiring pattern 325 printed so as to surround the periphery of the substrate hole 319a, and a connection portion 327 for connecting the three lead wires 326 to the wiring pattern 325 by soldering. These three lead wires 326 are a lead wire 326R1, a lead wire 326R2, and a lead wire 326B, all connected to the position detection connector C1 (see FIG. 8). The position detection connector C1 is connected to a position detection signal capturing connector (not shown) provided on the circuit board 404 (see FIGS. 4, 13, and 14), and the three lead wires 326 are connected to the circuit. The control unit 401 mounted on the substrate 404 is connected.

  The wiring pattern 325 has one end connected to the connection portion 327 and the other end formed so as to surround the periphery of the substrate hole 319a and is interrupted at the terminal end, and one end connected to the connection portion 327 and the timepiece. A first outer peripheral pattern 329 that wraps around the outer peripheral side of the inner peripheral pattern 328 and a second outer peripheral pattern 330 that has one end connected to the connection portion 327 and wraps around the outer peripheral side of the inner peripheral pattern 328 counterclockwise. doing. In the connection portion 327, the lead wire 326B is connected to the inner peripheral pattern 328, the lead wire 326R1 is connected to the first outer peripheral pattern 329, and the lead wire 326R2 is connected to the second outer peripheral pattern 330.

  An inner peripheral slidable contact plate that allows the inner peripheral pattern 328, the first outer peripheral pattern 329, and the second outer peripheral pattern 330 to slide on a contact point 331 (see FIG. 10) that the contact plate 320 has, which will be described later. 328a, a first outer peripheral sliding contact plate 329a, and a second outer peripheral sliding contact plate 330a are stacked. The inner peripheral sliding contact plate 328a, the first outer peripheral sliding contact plate 329a, and the second outer peripheral sliding contact plate 330a are formed of a conductive member as a whole. Further, an insulating plate 332 made of an insulator is disposed between the first outer peripheral sliding contact plate 329a and the second outer peripheral sliding contact plate 330a. The arrangement range of the inner peripheral sliding contact plate 328a and the range connecting the first outer peripheral sliding contact plate 329a and the second outer peripheral sliding contact plate 330a are the rotational range of the rotary shaft 124 determined by the clutch mechanism 302 described above. It corresponds to.

  FIG. 10 is a perspective view showing the contact plate 320 included in the position detection unit 304 of the drive unit 301. The contact plate 320 has the contact 331 described above. The contact 331 is formed to have a width straddling the inner peripheral sliding contact plate 328a, the first outer peripheral sliding contact plate 329a, and the second outer peripheral sliding contact plate 330a. Accordingly, the contact point 331 is a position for electrically connecting the inner peripheral sliding contact plate 328a and the first outer peripheral sliding contact plate 329a in accordance with the position of the contact plate 320 that rotates together with the rotating shaft 124 (as a in FIG. 9). And a position (indicated as b in FIG. 9) where the inner peripheral sliding contact plate 328a and the second outer peripheral sliding contact plate 330a are conductively connected to each other. Therefore, the control unit 401 (see FIGS. 4, 13, and 14) mounted on the circuit board 404 determines whether the inner peripheral sliding contact plate 328a and the first outer peripheral sliding contact plate 329a are electrically connected. By detecting whether or not the circumferential sliding contact plate 328a and the second outer sliding contact plate 330a are conductively connected, the rotational position of the rotating shaft 124 can be detected. If the rotational position of the rotary shaft 124 is known, the rotational position of the thumb turn shaft 17 connected to the rotary shaft 124 is also known, and the control unit 401 recognizes whether the thumb turn 12 is in a locked state or an unlocked state. be able to.

  More specifically, the state in which the inner peripheral sliding contact plate 328a and the first outer peripheral sliding contact plate 329a are conductively connected is viewed from the front side (the side visible in FIG. 6) of the drive unit 301. This is a state where the rotating shaft 124 is fully rotated clockwise. That is, when viewed from the front side of the electric lock 101 (the visible side in FIG. 3), the thumb turn shaft 17 is also fully rotated in the clockwise direction. For convenience of explanation, this position is referred to as a first rotational position. A mechanism of the position detection unit 304 for detecting whether or not the rotation shaft 124 and the thumb turn shaft 17 are located at the first rotation position, that is, the inner periphery sliding contact plate 328a of the detection circuit board 319 and the first outer periphery slide. A mechanism in which the contact 331 of the contact plate 320 is intermittently connected to the contact plate 329a is referred to herein as a first detection switch 304a.

  On the other hand, the state in which the inner peripheral sliding contact plate 328a and the second outer peripheral sliding contact plate 330a are conductively connected is viewed from the upper surface side (the side visible in FIG. 6) of the drive unit 301. This is a state where the rotating shaft 124 is fully rotated counterclockwise. That is, when viewed from the front side of the electric lock 101 (the visible side in FIG. 3), the thumb turn shaft 17 is also fully rotated counterclockwise. For convenience of explanation, this position is referred to as a second rotational position. A mechanism of the position detection unit 304 for detecting whether or not the rotary shaft 124 and the thumb turn shaft 17 are located at the second rotational position, that is, the inner peripheral sliding contact plate 328a of the detection circuit board 319 and the second outer peripheral slide. A mechanism in which the contact 331 of the contact plate 320 is intermittently connected to the contact plate 330a is referred to herein as a second detection switch 304b.

  As described above, according to the present embodiment, since the position detection unit 304 of the thumb turn 12 is provided on the back side of the clutch mechanism 302 of the drive unit 301, it is not necessary to separately secure a space for providing the position detection unit 304. The electric lock 101 can be reduced in size.

  FIG. 11 is a perspective view illustrating a state where the drive unit 301 is stored and assembled in the drive unit storage space 203 of the battery case 201. FIG. 12 is a side view thereof. As shown in FIGS. 11 and 12, the drive unit 301 fits in the drive unit storage space 203 formed in the battery case 201. The battery case 201 has three claw portions 210 that hold the drive unit 301 stored in the drive unit storage space 203 at three points. The claw unit 210 holds the drive unit 301. The nail | claw part 210 becomes an inclined surface on the insertion side of the drive part 301, and is pushed by the drive part 301 put in the drive part accommodation space 203, and elastically deforms. The claw portion 210 is restored when the driving unit 301 is stored in the driving unit storage space 203, and the driving unit 301 is securely held in the driving unit storage space 203. At this time, the housing 303 of the drive unit 301 fits the fixing piece 207 formed on the battery case 201 into the fitting groove 306 described above (see FIGS. 4, 5, and 8). Thereby, the drive part 301 is hold | maintained with respect to the housing 303 without position shift.

  As shown in FIGS. 11 and 12, the lead wire 326 and the position detection connector C1 described above are pulled out from the drive unit 301 attached to the battery case 201, and the power supply connector C2 for power supply is connected to the tip. The feeder line PL to be drawn is also drawn out.

  The insertion hole 306a formed in the driving unit 301 is aligned with the mounting hole 207a (see FIG. 4) of the fixing piece 207 formed in the battery case 201, and the mounting hole 208a of the fixing stud 208 is aligned with the driving unit. It is exposed without being covered with 301.

  FIG. 13 is a front view showing a battery case 201 in which the drive unit 301 and the circuit board 404 are assembled. As shown in FIG. 13, the circuit board 404 is fixed to the battery case 201 to which the driving unit 301 is attached. The circuit board 404 is screwed to the screw hole 209a (see FIG. 4) of the board fixing stud 209 using the screw S. When the circuit board 404 is attached to the battery case 201, the position detection connector C1 and the power feeding connector C2 drawn from the circuit board 404 are connected to the circuit board 404 in advance. A connector (not shown) on the circuit board 404 to which the position detection connector C1 and the power feeding connector C2 are to be connected is disposed on the back side of the circuit board 404.

  Here, an exposure hole 409 is formed in the circuit board 404 in order to expose one fixing piece 207 and open its mounting hole 207a (see also FIG. 4). The circuit board 404 is attached without covering the other fixing piece 207 and the fixing stud 208.

  As shown in FIG. 13, the circuit board 404 is equipped with a setting switch SSW and a remote control registration switch RSW on the surface side (see also FIG. 4). The setting switch SSW is a dip switch that is switched to set various operation modes, and the remote control registration switch RSW registers a remote controller 701 (see FIG. 15) that wirelessly outputs a locking signal and an unlocking signal. This is a push switch that is pushed for this purpose. The circuit board 404 also has a wireless signal receiving unit 410 (see FIG. 15). The wireless signal receiving unit receives the locking signal and the unlocking signal wirelessly transmitted from the remote controller, and outputs them to the control unit 401.

  FIG. 14 is an exploded perspective view showing a state in which the battery case cover 501 is attached to the battery case 201 in which the drive unit 301 and the circuit board 404 are assembled. The battery case cover 501 is a resin molded product as an example, and is attached to the battery case 201 in which the drive unit 301 and the circuit board 404 are assembled, and then screwed at three locations from the back side of the battery case 201. Two screws (not shown) used in this case are formed in the drive portion 301 in alignment with the mounting holes 207a of the two fixing pieces 207 formed in the battery case 201 and these. The two insertion holes 306a are inserted, screwed into the battery case cover 501, and tightened. Further, another screw (not shown) is inserted into the attachment hole 208a of the fixing stud 208 formed in the battery case 201, screwed into the battery case cover 501, and tightened. Therefore, the battery case cover 501 is formed with screw holes (not shown) for screwing those screws (not shown).

  The battery case cover 501 includes a notch 502 for opening the inlet of the battery storage unit 202, a rotation shaft hole 503 for exposing the rotation shaft 124, and a switch for exposing the setting switch SSW and the remote control registration switch RSW. Hole 504. Further, on the surface of the battery case cover 501, a friendly display 505 for notifying the user of the storage direction of the battery 601 is shown at a position corresponding to the battery storage unit 202. Therefore, when the battery 601 of the electric lock 101 is replaced, it can be easily replaced simply by removing the cover 131 (see FIG. 3).

  FIG. 15 is a block diagram illustrating a circuit configuration of the control unit 401 mounted on the circuit board 404. The control unit 401 is configured mainly with a processor 901. As an example, the processor 901 is configured by an integrated circuit having a memory function, and configured to execute predetermined digital processing. The processor 901 is connected to the wireless signal receiving unit 410 that receives the lock signal and the unlock signal wirelessly transmitted from the remote controller 701, and the setting switch SSW and the remote control registration switch RSW described above. In addition, a detection circuit 902, a drive circuit 903, and a notification circuit 904 are connected to the processor 901.

  Here, as described above, the setting switch SSW is a DIP switch that is switched to set various operation modes. The setting switch SSW has four changeover switches 1 to 4.

  The change-over switch 1 is a switch for selectively switching and setting the operation mode between a right-opening door in which the locking direction of the locking device 11 is counterclockwise of the thumb-turn shaft 17 and a left-opening door in which the locking direction is clockwise. It is.

  The change-over switch 2 is a switch for selectively setting on / off of automatic locking. The automatic locking means that when a predetermined event occurs after a predetermined time has elapsed after the unlocking signal is transmitted from the remote controller 701 to the electric lock 101 and the locking device 11 is unlocked, the unlocking is performed. This means that the device 11 is automatically locked.

  The changeover switch 3 is a switch for setting the length of a predetermined time determined in such automatic locking. In the embodiment of the present invention, the change-over switch 3 selectively switches between two types of time of 30 seconds and 15 seconds as the predetermined time.

  The change-over switch 4 is a switch for selectively switching on / off the sound of the buzzer B. The ringing of the buzzer B corresponds to the operation of the drive unit for locking and unlocking the locking device 11.

  Next, as described above, the remote control registration switch RSW is a push switch that is pushed to register a remote control 701 (see FIG. 15) that wirelessly outputs a lock signal and an unlock signal. The remote controller 701 causes the identification code of the remote controller 701 to accompany the lock signal or unlock signal that is output wirelessly. Therefore, when the remote control 701 is operated while the remote control registration switch RSW is pressed and the lock signal or the unlock signal is transmitted wirelessly, the control unit 401 follows the lock signal or the unlock signal received by the radio signal reception unit 410. The processor 901 stores and registers the identification code of the remote controller 701.

  The detection circuit 902 captures a position signal output from the position detection unit 304 built in the drive unit 301 and detects an on / off state of the first detection switch 304a and the second detection switch 304b included in the position detection unit 304. Thus, it is detected whether the rotating shaft 124 and the thumb turn shaft 17 connected thereto are located at the first rotating position or the second rotating position.

  The drive circuit 903 is a circuit for driving the motor M built in the drive unit 301.

  The notification circuit 904 is a circuit for driving the buzzer B mounted on the circuit board 404.

  Each unit in the control unit 401 described above operates using the battery 601 as a power source.

  After the electric lock 101 is attached to the door 51, before the electric lock 101 is used, it is set by operating the changeover switch 1 whether the door 51 is a right hanging door or a left hanging door. In accordance with this setting, the processor 901 performs locking / unlocking control corresponding to the door type.

  FIG. 16 is a flowchart showing the flow of the locking process executed by the processor 901 of the control unit 401. First, when the wireless signal receiving unit 410 receives a signal wirelessly output in the form of radio waves from the registered remote controller 701 in the standby state (step S1001) (Y in step S1002), the received signal is locked. Whether it is a signal (Y in step S1003) or an unlock signal (Y in step S2001 in FIG. 17) is determined.

  When the processor 901 determines reception of the locking signal (Y in step S1003), the processor 901 determines whether the currently set operation mode is for the right opening door (left hanging door) or the left opening door (right hanging door). (Step S1004). This determination is made by detecting the state of the changeover switch 1 in the setting switch SSW that has been changed over in advance.

  When the processor 901 determines that the operation mode being set is for a right-open door (Y in step S1004), the processor 901 detects the state of the second detection switch 304b included in the position detection unit 304 of the drive unit 301. 902.

  The rotary shaft 124 and the thumb turn shaft 17 connected to the rotary shaft 124 are located at a rotational position rotated fully counterclockwise when the second detection switch 304b is on, and when the second detection switch 304b is off. Is out of the rotational position fully turned counterclockwise. For this reason, in the case of a right-open door, the locked state is set when the second detection switch 304b is on, and the locked state is not set when the second detection switch 304b is off. Therefore, if the processor 901 confirms that the second detection switch 304b is turned off and is not locked (Y in step S1005), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, and the thumb turn The shaft 17 is rotated counterclockwise (step S1006). If it is confirmed that the second detection switch 304b is turned on and locked (Y in Step S1007), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M (Step S1007). S1011). Thus, the locking device 11 is locked.

  On the other hand, if the processor 901 confirms that the second detection switch 304b is not off, that is, in the locked state (N of step S1005) in the determination process of step S1005, step S1006 to step S1007. The process of step S1011 is skipped. Such a situation occurs when a locking signal is transmitted from the remote controller 701 even though the locking device 11 is locked. The processor 901 prevents the motor M from being wasted in such a situation and suppresses the consumption of the battery 601.

  Returning to the description of the determination process in step S1004. When the processor 901 determines that the operation mode being set is not for the right door, that is, for the left door (N in step S1004), the processor 901 has the first that the position detector 304 of the drive unit 301 has. The detection circuit 902 detects the state of the detection switch 304a.

  The rotary shaft 124 and the thumb turn shaft 17 connected to the rotary shaft 124 are positioned at a rotational position rotated fully clockwise when the first detection switch 304a is on, and when the first detection switch 304a is off. It is in a state where it has deviated from the rotational position fully turned clockwise. For this reason, in the case of a left-open door, the locked state is set when the first detection switch 304a is on, and the locked state is not set when the first detection switch 304a is off. Therefore, if the processor 901 confirms that the first detection switch 304a is off and is not locked (Y in step S1008), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, and the thumb turn The shaft 17 is rotated clockwise (step S1009). If it is confirmed that the first detection switch 304a is turned on and locked (Y in step S1010), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M ( Step S1011). Thus, the locking device 11 is locked.

  On the other hand, if the processor 901 confirms that the first detection switch 304a is not OFF, that is, in the locked state (N of step S1008) in the determination process of step S1008, step S1009 to step S1011. Skip the process. Such a situation occurs when a lock signal is transmitted from the remote controller 701 even though the lock device 11 is locked. The processor 901 prevents the motor M from being wasted in such a situation and suppresses the consumption of the battery 601.

  After the processing of step S1011, the processor 901 detects the state of the changeover switch 4 in the setting switch SSW, and determines whether or not the sounding mode for sounding the buzzer B during the locking or unlocking operation is set (step S1012). . If the processor 901 determines that the ringing mode is set (Y in step S1012), the processor 901 outputs a notification signal to the notification circuit 904 to ring the buzzer B (step S1013), and the standby state in step S1001 Return to Thereby, the buzzer B rings according to the locking operation. On the other hand, if the processor 901 does not determine that the sounding mode is set (N in step S1012), it skips the buzzer B sounding process in step S1013 and returns to the standby state in step S1001. To do.

  Note that the notification circuit 904 may change the sound of the buzzer B depending on whether the buzzer B is locked or unlocked. In this case, as a process in step S1013, the buzzer B is sounded with a sound that suggests locking. Drive. Thereby, the buzzer B emits a ringing sound that suggests locking in accordance with the locking operation.

  FIG. 17 is a flowchart showing the unlocking process executed by the processor 901 of the control unit 401. When the processor 901 determines that the unlock signal has been received (Y in step S2001), the processor 901 determines whether the currently set operation mode is for the right door (left door) or the left door (right door). (Step S2002). This determination is made by detecting the state of the selector switch 1 in the setting switch SSW.

  When the processor 901 determines that the operation mode being set is for a right-open door (Y in step S2002), the processor 901 detects the state of the first detection switch 304a included in the position detection unit 304 of the drive unit 301. 902.

  As described above, in the case of a right-open door, the unlocked state is obtained when the first detection switch 304a is on, and the unlocked state is not established when the first detection switch 304a is off. Therefore, if the processor 901 confirms that the first detection switch 304a is off and is not unlocked (Y in step S2003), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, The thumb turn shaft 17 is rotated clockwise (step S2004). Then, if it is confirmed that the first detection switch 304a is turned on and is in the unlocked state (Y in Step S2005), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M ( Step S2009). Thus, the locking device 11 is unlocked.

  On the other hand, if the processor 901 confirms that the first detection switch 304a is not OFF, that is, is in the unlocked state in the determination process of step S2003 (N of step S2003), step S2004 to step The processing of S2005 and step S2009 is skipped. Such a situation occurs when the unlocking signal is transmitted from the remote controller 701 even though the locking device 11 is unlocking. The processor 901 prevents the motor M from being wasted in such a situation and suppresses the consumption of the battery 601.

  Returning to the description of the determination process in step S2002. If the processor 901 determines that the operation mode being set is not for the right-open door, that is, for the left-open door (N in step S2002), the processor 901 has the second that the position detection unit 304 of the drive unit 301 has. The detection circuit 902 detects the state of the detection switch 304b.

  As described above, in the case of the left-open door, the unlocked state is obtained when the second detection switch 304b is on, and the unlocked state is not established when the second detection switch 304b is off. Therefore, if the processor 901 confirms that the second detection switch 304b is turned off and is not unlocked (Y in step S2006), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, The thumb turn shaft 17 is rotated counterclockwise (step S2007). Then, if it is confirmed that the second detection switch 304b is turned on and is in the unlocked state (Y in step S2008), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M ( Step S2009). Thus, the locking device 11 is unlocked.

  On the other hand, if the processor 901 confirms that the second detection switch 304b is not off, that is, in the unlocked state in the determination process of step S2006 (N of step S2006), step S2007 to step S2007 The process of S2009 is skipped. Such a situation occurs when the unlocking signal is transmitted from the remote controller 701 even though the locking device 11 is unlocking. The processor 901 prevents the motor M from being wasted in such a situation and suppresses the consumption of the battery 601.

  After the process of step S2009, the processor 901 detects the state of the changeover switch 4 in the setting switch SSW, and determines whether or not the sounding mode for sounding the buzzer B during the locking or unlocking operation is set (step S2010). . When the processor 901 determines that the sounding mode is set (Y in step S2010), the processor 901 outputs a notification signal to the notification circuit 904 so as to sound the buzzer B (step S2011). Thereby, the buzzer B rings according to the unlocking operation. On the other hand, if the processor 901 does not determine that the sounding mode is set (N in step S2010), it skips the buzzer B sounding process in step S2011.

  The notification circuit 904 may change the sound of the buzzer B depending on whether the buzzer B is locked or unlocked. In this case, as a process in step S2011, the buzzer Buzzer generates a buzzer with a sound that suggests unlocking. Drive B. Thereby, the buzzer B emits a ringing sound suggesting unlocking in accordance with the unlocking operation.

  Subsequently, the processor 901 detects the state of the changeover switch 2 in the setting switch SSW and determines whether or not the automatic lock mode is set (step S2012). As a result of this determination, if the automatic locking mode is not set (N in step S2012), the process returns to the standby state in step S1001 (see FIG. 16). On the other hand, when the automatic locking mode is set (Y in step S2012), the process proceeds to the flowchart shown in FIG.

  FIG. 18 is a flowchart showing a flow of automatic locking processing executed by the processor 901 of the control unit 401. When the processor 901 determines in step S2012 in FIG. 17 that the automatic locking mode is set (Y in step S2012), the processor 901 monitors whether or not a predetermined time, which is the occurrence of a predetermined event, has elapsed (step S2012). S3003). The predetermined time in this case is set to 30 seconds or 15 seconds depending on the state of the changeover switch 3 in the setting switch SSW. Meanwhile, when the processor 901 determines that the wireless signal reception unit 410 has received a signal wirelessly output in the form of radio waves from the registered remote controller 701 (Y in step S3001), the processor 901 is in a standby state in step S1001 (see FIG. 16). ) And the locking process shown in FIG. 16 or the unlocking process shown in FIG. 17 is executed. If the processor 901 determines manual locking before the predetermined time has elapsed (Y in step S3002), the processor 901 returns to the standby state in step S1001 (see FIG. 16). The determination of the presence or absence of manual locking in step S3002 is easily performed by taking in and detecting the on / off state of the first detection switch 304a or the second detection switch 304b in the position detection unit 304 by the detection circuit 902.

  When the processor 901 determines that the predetermined time has elapsed after unlocking (step S2004 to step S2005, step S2009 in FIG. 17) (Y in step S3003), the currently set operation mode is the right opening door (left hanging door). It is determined whether it is for a left door or a left door (left hanging door) (step S3004). This determination is made by detecting the state of the selector switch 1 in the setting switch SSW.

  When the processor 901 determines that the operation mode being set is for the right-open door (Y in step S3004), the processor 901 detects the state of the second detection switch 304b included in the position detection unit 304 of the drive unit 301. 902.

  As described above, the rotary shaft 124 and the thumb turn shaft 17 connected to the rotary shaft 124 are located at a rotational position that is fully rotated counterclockwise when the second detection switch 304b is on, and the second detection switch 304b. When is off, it is in a state of being out of the rotational position fully turned counterclockwise. For this reason, in the case of the right-opening door 51, when the second detection switch 304b is on, it is not in the locked state, and when it is off, it is not in the locked state. Therefore, if the processor 901 confirms that the second detection switch 304b is turned off and is not locked (Y in step S3005), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, and the thumb turn The shaft 17 is rotated counterclockwise (step S3006). If it is confirmed that the second detection switch 304b is turned on and locked (Y in step S3007), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M (step S3007). S3011). Thus, the locking device 11 is automatically locked.

  On the other hand, if the processor 901 confirms that the second detection switch 304b is not turned off, that is, in the locked state (N in step S3005) in the determination processing in step S3005, step S3006 to step S3007. The process of step S3011 is skipped.

  Returning to the description of the determination process in step S3004. If the processor 901 determines that the operation mode being set is not for a right-open door, that is, for a left-open door (N in step S3004), the processor 901 has a first that the position detection unit 304 of the drive unit 301 has. The detection circuit 902 detects the state of the detection switch 304a.

  As described above, the rotation shaft 124 and the thumb turn shaft 17 connected to the rotation shaft 124 are located at the rotation position fully rotated clockwise when the first detection switch 304a is on, and the first detection switch 304a is When it is off, it is out of the rotational position fully rotated clockwise. For this reason, in the case of the left-open door 51, the locked state is set when the first detection switch 304a is on, and the locked state is not set when the first detection switch 304a is off. Therefore, if the processor 901 confirms that the first detection switch 304a is off and is not locked (Y in step S3008), the processor 901 outputs a drive signal to the drive circuit 903 to drive the motor M, and the thumb turn The shaft 17 is rotated clockwise (step S3009). If it is confirmed that the first detection switch 304a is turned on and locked (Y in Step S3010), a drive stop signal is output to the drive circuit 903 so as to stop the drive of the motor M (Step S3010). S3011). Thus, the locking device 11 is automatically locked.

  On the other hand, if the processor 901 confirms that the first detection switch 304a is not off, that is, in the locked state (N in step S3008) in the determination processing in step S3008, step S3009 to step S3011. Skip the process.

  After the processing of step S3011, the processor 901 detects the state of the changeover switch 4 in the setting switch SSW, and determines whether or not the sounding mode for sounding the buzzer B during the locking or unlocking operation is set (step S3012). . If the processor 901 determines that the sounding mode is set (Y in step S3012), the processor 901 outputs a notification signal to the notification circuit 904 to sound the buzzer B (step S3013), and the standby state in step S1001. Return to (see FIG. 16). Thereby, the buzzer B rings according to the locking operation. On the other hand, if the processor 901 does not determine that the sounding mode is set (N in Step S3012), the processor 901 skips the sounding process of the buzzer B in Step S3013 and waits in Step S1001 (see FIG. 16).

  Note that the notification circuit 904 may change the sound of the buzzer B depending on whether the buzzer B is locked or unlocked. In this case, as a process in step S3013, the buzzer B sounds with a sound that suggests locking. Drive. Thereby, the buzzer B emits a ringing sound that suggests locking in accordance with the locking operation.

  As described above, in the electric lock 101 of the present embodiment, when the locking device 11 is locked and unlocked, the currently set operation mode is suspended from the state of the changeover switch 1 included in the setting switch SSW. It is determined whether it is for a door or a left hanging door (step S1004 in FIG. 16, step S2002 in FIG. 17, step S3004 in FIG. 18), and either locking or unlocking received wirelessly from the remote controller 701. The locking device 11 can be correctly locked and unlocked according to one signal. Therefore, it is not necessary to prepare the electric lock 101 separately for the right hanging door and the left hanging door, and when manufacturing such an electric lock 101, the number of parts and the cost of parts can be reduced. In addition, the man-hours for managing parts can be drastically reduced.

  Further, according to the present embodiment, it is determined whether the operation mode is for the right hanging door or the left hanging door by inverting the position signal output by the position detecting unit 304 and locking or unlocking. 16 (step S1005 and step S1008 in FIG. 16, step S2003 and step S2006 in FIG. 17, step S3005 and step S3008 in FIG. 18), the determination result when the lock signal is wirelessly received is being unlocked, and Only when the determination result when the lock signal is wirelessly received is locked, the drive unit 301 is driven and controlled in accordance with the lock signal and the unlock signal (N in step S1005 in FIG. 16, step S1008). N, N in step S2003, N in step S2006). Therefore, it is possible to drive the motor M unnecessarily by further unlocking operation despite being unlocked, or on the contrary, further unlocking operation despite being locked. And the consumption of the battery 601 can be suppressed.

  In addition, according to the present embodiment, after the drive unit 301 is driven and controlled to unlock the locking device 11 in accordance with the unlocking signal wirelessly received from the remote controller 701 (steps S2004 to S2005 in FIG. 17, step S2009), in accordance with the occurrence of a predetermined event (Y in step S3003), on the condition that the determination result is unlocking (N in step S3005 in FIG. 18, N in step S3008), lock the locking device 11 Thus, the drive unit 301 is driven and controlled. Therefore, since the electric lock 101 is locked when a predetermined time elapses after unlocking, the unlocked state of the electric lock 101 does not continue and the security can be improved.

  According to the present embodiment, since the operation mode is set according to the switching state of the setting switch SSW for switching the operation mode, the operation mode can be easily set. In addition, since the setting switch SSW is exposed by removing the cover 131, the setting operation of the operation mode can be further facilitated.

  Further, according to the present embodiment, the motor M that can rotate forward and backward using the battery 601 as a power source, the rotating shaft 124 that is driven by the motor M and rotates to transmit the rotational driving force to the thumb turn shaft 17, and the rotating shaft The drive unit 301 is compactly formed by the position detection unit 304 arranged around the 124. Therefore, the electric lock 101 can be formed small and thin as a whole. In particular, in the aspect of thinning the device, the electric lock 101 according to the present embodiment has the battery case 201 and the drive unit 301 arranged in parallel in a direction orthogonal to the axial direction of the thumb turn shaft 17. Can be suppressed from protruding from the door 51, and even when the electric lock 101 of the retrofitting method is used, the opening and closing of the door 51 can be prevented from being hindered.

  In addition, the electric lock 101 of the present embodiment opens the drive unit storage space 203 for storing the drive unit 301 and arranges the two battery storage units 202 apart from each other on the left and right sides. The battery 601 is stored in the direction in which the directions face each other. Thereby, the left-right direction dimension of the electric lock 101 can be made small, and even if it is the electric lock 101 of a retrofit system, it can prevent the obstruction to the opening and closing of the door 51.

  In addition, such a layout makes the weight balance equal to the left and right, so that an excessive force is not applied to the base member 111 fixed to the door 51, and the electric lock 101 can be stably attached to the door 51. .

  In addition to this, since the rotation shaft 124 of the drive unit 301 is disposed at the center position of the battery case 201, the end surface of the door 51 from the end of the electric lock 101 regardless of whether the door 51 is opened or closed. Can be made the same distance. Thereby, even if it uses for the door 51 which opens and closes to either right and left, it can be made not to interfere with the opening and closing of the door 51.

  Furthermore, in this embodiment, the battery 601 that is spaced apart can be easily connected directly by the simple structure of the first terminal portion 402. Moreover, since the first terminal portion 402 can be easily attached to the battery case 201 using the attachment groove 204 and the attachment long hole 205 formed in the battery storage portion 202, the workability of the assembly work is improved. can do. This effect is also achieved by the fact that the pair of electrical connection members 403 having the second terminal portions 405 are fixed to the circuit board 404, so that the electrical connection members 403 are attached to the battery storage portion 202. The same effect can be achieved by the fact that the groove 204 and the attachment long hole 205 can be easily attached to the battery case 201. When the electric lock 101 according to the present embodiment is attached to the door 51, the circuit board 404 is positioned above the driving unit 301 in the vertical direction. Even if water or water enters, there is no possibility of reaching the circuit board 404.

11 Locking device 17 Thumb turn shaft 51 Door 124b Rotating shaft 132 Knob portion 303 Housing 308 Clutch plate 310 Rotating body 311 Protruding portion 312 Bearing 313 Bearing hole 314 Enclosure wall 315 Movement restricting portion 316 Energizing member 317 Escape space

Claims (4)

A housing fixed to the side of the door;
The one side is connected to the thumb turn shaft of the locking device provided in the door, and the opposite side is connected to a knob for manually rotating the thumb turn shaft. A cylindrical rotating body that rotates about an axis;
A movement restricting portion for restricting movement of the rotating body only within a predetermined angle range; and
A clutch plate that is arranged with a gap inside the side wall of the rotating body and is rotated by being driven by a driving source that generates a rotational driving force;
A set of two bearing holes formed at intervals in the circumferential direction at two locations on the side wall facing each other across the axis of the rotating body;
Four bearings that are fitted in each of the bearing holes and are arranged between the outer peripheral surface of the clutch plate and the inner peripheral surface of the surrounding wall;
Two protrusions that are located between each pair of the bearings and that are provided on the outer peripheral surface of the clutch plate with dimensions that do not get over the bearings, and that transmit the rotation of the clutch plate to the rotating body; ,
As the rotary body approaches the position where movement is restricted, the gap between the rotary body and the surrounding wall is formed in a shape that gradually expands, and the rotary body is stopped when the movement is restricted. Four escape spaces for retracting only one of the two pairs of bearings so that the protrusions get over the one bearing;
An electric lock clutch mechanism comprising: The clutch plate is configured such that the protrusion is movable toward the rotation center, and the protrusion is urged toward the outer peripheral direction by an urging member.
The clutch mechanism for an electric lock according to claim 1. The housing forms the surrounding wall;
The clutch mechanism for an electric lock according to claim 1, wherein the clutch mechanism is an electric lock. The rotating body includes a rotating shaft coupled to the thumb turn shaft.
4. The clutch mechanism for an electric lock according to claim 1, wherein the clutch mechanism is an electric lock.

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