JP5877116B2 - Electric lock - Google Patents

Description

  The present invention relates to an electric lock that is applied and unlocked by an electric actuator such as a drive motor.

  As an electric lock in which a dead bolt is moved forward and backward between a locked position and an unlocked position by a drive motor, one described in Patent Document 1 is conventionally known. In this electric lock, the rotation of the drive motor, the drive of which is controlled by a control unit provided on the printed circuit board, is reduced by a gear reduction mechanism, and the dharma is adjusted to the set angle in synchronization with the rotation of the output gear of the gear reduction mechanism. The dead bolt is moved back and forth between a locked position and an unlocked position via a crank arm that rotates in the opposite direction and connects the dharma and the dead bolt.

  In the electric lock as described above, the applying / unlocking operation is executed in accordance with the program stored in the memory of the control unit. In addition, the operation history of locking / unlocking is input to the CPU from the input / output device (I / O), output and stored in the memory from the CPU, and the operation history is taken out as necessary.

Japanese Patent No. 455389

  By the way, in the above-described conventional electric lock, when changing the program for executing the locking / unlocking operation and taking out the record of the operation history, the lock box is removed from the door and the printed circuit board is taken out from the lock box. Since it is necessary to perform a program change operation and an operation history extraction operation such as operation history, there is an inconvenience that the operation is very troublesome.

  An object of the present invention is to provide an electric lock which can easily perform a program change operation and a recording information extraction operation such as an operation history.

  In order to solve the above-described problems, in the present invention, a substrate case in which a printed circuit board is accommodated inside a lock box having a front plate and a front back plate, and an electric actuator serving as a drive source for locking and unlocking operations In the electric lock that controls the driving of the electric actuator by the control unit provided on the printed circuit board to perform locking and unlocking, on the front wall along the inner surface of the front back plate of the substrate case, A male connector connected to the input / output device of the control unit is provided so that its receiving port is exposed to the outside, and the lead connected to the terminal device at a position facing the male connector on the front back plate A configuration provided with a connection port into which the female connector at the tip of the wire can be inserted is adopted.

  In the electric lock having the above configuration, when recording information such as program change work or operation history is taken out, the door to which the electric lock is attached is opened, and the front plate exposed to the outside is formed on the front back plate. Open the connected port. And the female connector of the front-end | tip part of the lead wire connected to terminal devices, such as a personal computer, is connected to a male connector from the open connection port, and a terminal device is operated.

  In the present invention, as described above, the male connector is exposed to the outside by removing the front plate, and the terminal device can be connected via the male connector. Therefore, it is possible to easily retrieve program information such as program change work and operation history.

The longitudinal cross-sectional view which shows embodiment of the electric lock which concerns on this invention 2 is a longitudinal sectional view showing a locked state of the electric lock. Sectional view along line III-III in FIG. 1 is a partially cutaway front view of the substrate case shown in FIG. Sectional view along line VV in FIG. An exploded perspective view of a dead bolt and a guide panel for guiding the movement of the dead bolt Exploded perspective view showing output gear and rack plate (a) thru | or (c) is operation | movement explanatory drawing which shows rotation operation | movement of an output gear in steps. Block diagram of control unit

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the lock box 1 has a flat square shape, and a front back plate 2 is provided on the front side thereof, and the front plate 3 is abutted against the front surface of the front back plate 2. Removable attachment is achieved by tightening screws 3a screwed into the front back plate 2.

  Inside the lock box 1, a dead bolt 5 that can be projected and retracted with respect to a square bolt insertion hole 4 formed in the front plate 3 and the front back plate 2, and a pair of opposed members that slidably support the dead bolt 5. An inner guide board 6A and a pair of opposed outer guide boards B provided outside the inner guide board 6A are incorporated.

  As shown in FIGS. 2 and 6, the dead bolt 5 is formed in a downward U-shape and has a top plate 5a and a pair of opposed side plates 5b. An L-shaped bent piece 5c that is bent toward the side plate 5b and bent downward from the tip thereof is provided, and a notch 5d is formed on the lower side of the bent piece 5c.

  A pair of opposed side plates 5b of the dead bolt 5 support a pair of guide pins 7 and 8 spaced in the front-rear direction, and both ends of the front guide pin 7 and the rear guide pin 8 are opposed to a pair of inner guides. A pair of front and rear guide holes 9 formed in each of the board 6A and the outer guide board 6B are slidably fitted.

  The pair of front and rear guide holes 9 are elongated holes extending long in the front-rear direction, and the dead bolt 5 is movable along the guide holes 9. The dead bolt 5 is movable within a range in which both end portions of the guide pins 7 and 8 are in contact with both front and rear ends of the guide hole 9, and both end portions of the guide pins 7 and 8 are at the front end of the guide hole 9. 2, the tip of the dead bolt 5 projects from the bolt insertion hole 4 as shown in FIG. 2. The protruding position is the locking position.

  Further, as shown in FIG. 1, the leading end of the dead bolt 5 is immersed in the bolt insertion hole 4 in a state where both end portions of the guide pins 7 and 8 are in contact with the rear end of the guide hole 9, and the insertion position Is the unlocking position.

  As shown in FIGS. 2 and 6, a sickle 10 is incorporated in the tip of the dead bolt 5. The sickle 10 is swingable about the front guide pin 7, and an engagement piece 11 is provided downward at the tip. Further, a brake piece 12 is provided at the rear end portion of the sickle 10 downward, and the brake piece 12 contacts the lower part of the inner periphery of the bolt insertion hole 4 before the dead bolt 5 moves forward to reach the locking position. It comes into contact with it and stops. When the deadbolt 5 further advances from the stopped state, the sickle 10 swings downward about the front guide pin 7, and the engagement piece 11 protrudes below the tip of the deadbolt 5. .

  In addition, the engagement piece 11 comes into contact with the inner peripheral lower side of the bolt insertion hole 4 at a position before the dead bolt 5 moves backward and reaches the unlocked position. When the dead bolt 5 retreats from the contact state, the sickle 10 swings upward about the front guide pin 7 due to contact with the inner peripheral lower side of the bolt insertion hole 4, and the dead bolt 5 retracts to the retracted position. Thus, it is accommodated in the tip of the dead bolt 5.

  As shown in FIG. 2, a lock lever 13 is provided above the dead bolt 5. The lock lever 13 is swingably supported around a fulcrum pin 14 supported at both ends by a pair of opposed outer guide boards 6B, and the tip of the lock lever 13 is dead bolt 5 by a kick spring 15 supported by the fulcrum pin 14. It is urged | biased toward the direction which presses.

  When the dead bolt 5 moves forward to the locking position, the lock lever 13 engages with the rear edge of the top plate 5a of the dead bolt 5 to lock the dead bolt 5 in the locking position.

  A projecting piece 16 is provided on the end of the rocking lever 13 on the swing center side, and the projecting piece 16 allows the rear guide pin 8 to be moved while the lock lever 13 locks the dead bolt 5 in the locked position. The release lever 17 is pivotally supported at the center so as to be opposed to the rocking end portion of the release lever 17 in the front-rear direction, and is pressed by swinging the release lever 17 in one direction. Due to the pressing, the lock lever 13 swings upward and the dead bolt 5 is unlocked.

  A pressure receiving piece 18 extending obliquely downward is provided at an end of the release lever 17 on the swing center side.

  A substrate case 20 is incorporated in the lock box 1 above the dead bolt 5. In addition, a motor support frame 30 is incorporated in a space formed between the substrate case 20 and the lock lever 13, and a drive motor 31 as an electric actuator is supported by the motor support frame 30.

  The substrate case 20 is fixed to the lock box 1. As shown in FIGS. 4 and 5, a printed circuit board 21 is accommodated in the substrate case 20. The printed circuit board 21 is fixed to the substrate case 20 through a screwing means, and a control unit 22 that controls the drive motor 31 is provided on the printed circuit board 21.

  Here, as shown in FIG. 9, the control unit 22 includes an input / output device (I / O) 23, a memory 24, and a CPU 25. The CPU 25 receives data from the input / output device 23 and the memory 24. After being calculated and processed, the data is output to the input / output device 23 and the memory 24.

  On the other hand, the input / output device 23 receives information such as an operation history by using an electric lock, and controls the drive motor 31 based on a program input from the CPU 25. Further, the memory 24 is configured to record a program for executing a locking / unlocking operation and information input from the CPU 25.

  The substrate case 20 has a front wall 26 along the inner surface of the front back plate 2, and a male connector 27 connected to the input / output device 23 is attached to the front wall 26. The male connector 27 is attached so that its receptacle is exposed to the outside.

  As shown in FIG. 1, the front back plate 2 has a connection port through which a female connector 28 provided at the tip of the lead wire L of the terminal device A shown in FIG. 29 is provided.

  The drive motor 31 is supported laterally with its rotary shaft 32 facing the rear plate of the lock box 1, and a gear reduction mechanism 33 that decelerates and outputs the rotation of the rotary shaft 32 is provided behind the drive motor 31 and the lock box 1. It is incorporated between the plates 1a.

  The gear reduction mechanism 33 has a pair of bevel gears 34 and 35 that mesh with each other in its torque transmission system, and an output gear 36 that outputs reduced rotation is centered on a horizontal axis that is orthogonal to the central axis of the drive motor 31. It is designed to rotate.

  Inside the lock box 1, a rack plate 40 is incorporated at a position close to the rear plate 1a. The rack plate 40 is supported so as to be movable up and down along a vertical guide groove 41 formed between the rear end portions of the pair of opposed inner guide boards 6A. A support piece 42 is provided, and one end of a crank arm 44 is rotatably connected to a connection pin 43 provided on the support piece 42.

  As shown in FIGS. 1 and 7, the crank arm 44 has an interlocking pin 45 at the other end, and the interlocking pin 45 is in an arc-shaped long hole 37 formed on one side surface of the output gear 36. The rack plate 40 is slidably fitted, and the rack plate 40 is moved up and down by a predetermined stroke via the crank arm 44 by rotation of the output gear 36 at a set angle.

  As shown in FIG. 1, a bifurcated piece 46 is provided on the upper side of the rack plate 40, and an interlocking pin 51 provided at one end of the switch lever 50 is fitted between the bifurcated piece 46. The switch lever 50 is supported at the center in the length direction by a fulcrum pin 52 protruding from the side plate of the substrate case 20, and is swingable about the fulcrum pin 52.

  The other end of the switch lever 50 is provided with a cylindrical magnet holder 54 that can swing along an arcuate guide groove 53 formed in the side plate of the substrate case 20, and the first magnet 55 is provided by the magnet holder 54. Is supported.

The switch lever 50 swings at a set angle about the fulcrum pin 52 in conjunction with the vertical movement of the rack plate 40. As shown in FIG. 4, on the component mounting surface of the printed circuit board 21, a first position for detecting the locking position of the dead bolt 5 at a position facing each stop position of the first magnet 55 that swings together with the switch lever 50. a proximity switch S _1, and a second proximity switch S ₂ for detecting the unlocking position of the dead bolt 5 is provided.

Further, the printed circuit board 21, the third proximity switch S ₃ is provided on an outer peripheral portion opposite to the position of the output gear 36, whereas, in the outer peripheral portion of the output gear 36, as shown in FIG. 1, a second A magnet 56 is provided.

The first proximity switch S ₁ and the second proximity switch S ₂ is adapted to output a detection signal to the control unit 22 operates when facing the first magnet 55, the control unit first proximity switch the detection signal input from the S ₁ and the second proximity switch S _2, which is a drive motor 31 to rotate in a direction opposite to the rotation direction of the immediately preceding. Output gear 36 by the reverse rotation of the drive motor 31 is rotated toward the neutral direction, the output gear 36 to the neutral position is rotated, the second magnet 56, so as to face the third proximity switch S ₃ Yes. In the opposing position, a third proximity switch S ₃ outputs a stop signal to the control unit 22 operates, the control unit 22 stops the driving motor 31 to reverse rotation by a stop signal inputted from the third proximity switch S ₃ It is supposed to let you.

  The neutral position is a position where one end or the other end of the long hole 37 faces the interlocking pin 45 of the crank arm 44 in the circumferential direction, and the rotation of the output gear 36 is immediately transmitted to the interlocking pin 45 of the crank arm 44. Say.

  As shown in FIGS. 1 and 7, a bent piece 47 is provided at one side lower portion of the rack plate 40, and rack teeth 48 are provided on the side edges of the bent piece 47.

  As shown in FIGS. 1 and 2, a dead hub 60 is incorporated in the rear part of the inner lower part of the lock box 1. The dead hub 60 has a boss portion 61, and the boss portion 61 is rotatably supported by a pedestal 62 fixed in the lock box 1.

  The dead hub 60 is rotated by a manual rotation operation of a thumb turn (not shown). Pinion teeth 63 that mesh with the rack teeth 48 of the rack plate 40 are formed on the outer periphery of the dead hub 60. When the rack plate 40 moves up and down, the dead hub 60 rotates in the direction opposite to the set angle in conjunction with the up and down movement. It is like that.

  A pressing piece 64 is provided on the outer periphery of the dead hub 60. The pressing piece 64 has a tip portion disposed in the aforementioned notch portion 5d formed in the bent piece 5c of the dead bolt 5. When the dead hub 60 rotates in one direction in conjunction with the downward movement of the rack plate 40, the pressing piece 64 presses the front side wall of the notch 5d to move the dead bolt 5 toward the locking position. ing.

  The pressing piece 64 faces the pressure receiving piece 18 of the release lever 17, and when the dead hub 60 rotates in the other direction in conjunction with the upward movement of the rack plate 40, the pressure piece 64 presses the pressure receiving piece 18 to release the release lever 17. Is swung toward the disengagement position, and the dead bolt 5 is moved toward the unlocking position via the release lever 17.

  A first stopper piece 65 a and a second stopper piece 65 b are provided in the circumferential lower portion of the dead hub 60 at intervals in the circumferential direction, and these stopper pieces 65 a and 65 b are connected to the stopper member 66 provided on the pedestal 62. The dead hub 60 is stopped at the locked position or the unlocked position by the contact.

  As shown in FIG. 2, the first stopper piece 65a is connected to a biasing means 67 that biases the dead hub 60 by switching between the locked position and the unlocked position. The biasing means 67 connects one end portion of the spring support member 68 to the first stopper piece 65a, and the other end portion of the spring support member 68 is supported in the radial direction of the rotatable shaft body 69 supported by the inner guide panel 6A. The first stopper piece 65 a and the shaft body 69 are pressed in opposite directions by a spring 71 supported by the spring support member 68 so as to be slidably inserted into the hole 70.

  The electric lock shown in the embodiment has the above-described structure, and FIG. 1 shows the unlocked state of the electric lock, and the dead bolt 5 is disposed at the unlocking position where it is inserted into the bolt insertion hole 4. In the unlocked state, when a locking signal is input to the input / output device 23, the drive motor 31 is driven to rotate the output gear 36 in the locking direction indicated by the arrows in FIG. 1 and FIG. By the rotation, one end of the long hole 37 formed in the output gear 36 comes into contact with the interlocking pin 45 provided at the other end portion of the crank arm 44, and the interlocking pin 45 is pulled up. As a result of the lifting, the rack plate 40 is lifted through the crank arm 44, and the rack plate 40 moves upward.

  Further, the upward movement of the rack plate 40 causes the switch lever 50 to swing about the fulcrum pin 52 in the direction in which the end on the magnet support side moves downward (the direction indicated by the arrow in FIG. 1), and the dead hub 60. Rotates in the locking direction (the direction indicated by the arrow in FIG. 1).

  As the dead hub 60 rotates, the pressing piece 64 provided on the outer periphery of the dead hub 60 presses the front side wall of the notch 5 d provided in the dead bolt 5. Due to the pressing, the dead bolt 5 moves toward the locking position.

  FIG. 2 shows a state in which the dead bolt 5 has moved to the locking position. In the locked state of the dead bolt 5, the tip of the lock lever 13 is engaged with the rear edge of the top plate 5a of the dead bolt 5, Lock deadbolt 5 in the locked position.

Further, in the locked state of the dead bolt 5, a first magnet 55 is first proximity switch S ₁ and a counter mounted on the printed circuit board 21 supported on the other end of the switch lever 50, the first proximity switch S ₁ Operates and outputs a lock position detection signal to the control unit 22.

Control unit 22, the detection signal input from the first proximity switch S _1, rotates the drive motor 31 in a direction opposite to the rotation direction of the immediately preceding. By the reverse rotation of the drive motor 31, the output gear 36 rotates in the neutral direction as shown by the arrow in FIG. Output gear 36 is, as shown in FIG. 8 (c), when rotated to the neutral position, the second magnet 56 opposes the third proximity switch S _3. In the opposing position, a third proximity switch S ₃ outputs a stop signal to the control unit 22 operates. The control unit 22 stops the driving motor 31 to reverse rotation by a stop signal inputted from the third proximity switch S _3.

  As described above, when the output gear 36 is returned to the neutral position, the other end of the elongated hole 37 is opposed to the interlocking pin 45 provided at the other end of the crank arm 44 in the circumferential direction.

  In the locked state of the electric lock shown in FIG. 2, when an unlocking signal is input to the input / output device 23, the drive motor 31 is driven and the output gear 36 rotates in the unlocking direction indicated by the arrow in FIG. By the rotation, the other end of the long hole 37 formed in the output gear 36 comes into contact with the interlocking pin 45 provided at the other end portion of the crank arm 44, and the interlocking pin 45 is pulled down. By the lowering, the rack plate 40 is pulled up via the crank arm 44 and the rack plate 40 moves downward.

  Further, the downward movement of the rack plate 40 causes the switch lever 50 to swing about the fulcrum pin 52 in the direction in which the end portion on the magnet support side moves upward (the direction indicated by the arrow in FIG. 2), and the dead hub 60. Rotates in the unlocking direction (the direction indicated by the arrow in FIG. 2).

  By turning the dead hub 60 in the unlocking direction, the pressing piece 64 provided on the outer periphery of the dead hub 60 presses the pressure receiving piece 18 of the release lever 17, and the release lever 17 swings by the press and the lock lever 13. The protruding piece 16 is pressed.

  When the protrusion 16 is pressed, the lock lever 13 swings in the disengagement direction and the dead bolt 15 is unlocked. In the released state, the pressing piece 64 continues to push the pressure receiving piece 18, so that the dead bolt 5 moves backward and is unlocked as shown in FIG. 1.

In unlocking the dead bolt 5, the first magnet 55 faces the second proximity switch S ₂ mounted on the printed circuit board 21 supported on the other end of the switch lever 50, a second proximity switch S ₂ is actuated Then, the unlock position detection signal is output to the control unit 22.

Control unit 22, the detection signal input from the second proximity switch S _2, rotates the drive motor 31 in a direction opposite to the rotation direction of the immediately preceding. Due to the reverse rotation of the drive motor 31, the output gear 36 rotates in the neutral direction. When the output gear 36 is rotated to the neutral position, the second magnet 56 opposes the third proximity switch S _3. In the opposing position, a third proximity switch S ₃ outputs a stop signal to the control unit 22 operates, the control unit 22 stops the driving motor 31 to reverse rotation by a stop signal inputted from the third proximity switch S ₃ Let

  When the output gear 36 is returned to the neutral position as described above, one end of the long hole 37 and the interlocking pin 45 provided at the other end of the crank arm 44 are connected to the periphery as shown in FIG. It is in a state of facing in the direction.

  The above-described locking and unlocking operations are executed in accordance with a program stored in the memory 24 of the control unit 22 shown in FIG. 9, and the program is changed or input from the CPU 25 to the memory 24. When the recorded information such as the operation history recorded is taken out, the door to which the electric lock is attached is opened, and the connection port 29 formed in the front back plate 2 is opened by removing the front plate 3 exposed to the outside. . Then, the terminal device A is operated by connecting the female connector 28 at the tip of the lead wire L connected to the terminal device A such as a personal computer to the male connector 27 from the open connection port 29.

  In this way, by removing the front plate, the male connector is exposed to the outside, and the terminal device can be connected via the male connector, thus eliminating the need to remove the lock box and the printed board. In addition, it is possible to easily take out recorded information such as program change work and operation history.

  In the embodiment, the dead bolt 5 is moved forward and backward by the electric motor 31 as an electric actuator to be engaged and unlocked. However, the solenoid is an electric actuator, and the reversing operation of the reversing latch is controlled by the solenoid. You may make it apply and unlock.

DESCRIPTION OF SYMBOLS 1 Lock box 2 Front back plate 3 Front plate 20 Board case 21 Printed circuit board 22 Control part 23 Input / output device 26 Front wall 27 Male connector 28 Female connector 29 Connection port 31 Drive motor (electric actuator)
A Terminal device L Lead wire

Claims (1)

Inside the lock box having the front plate and the front back plate, a board case in which a printed board is accommodated and an electric actuator to be a driving source for locking and unlocking operations are incorporated, and a control unit provided on the printed board In the electric lock that controls the driving of the electric actuator to perform locking and unlocking,
A male connector connected to the input / output device of the control unit is provided on the front wall along the inner surface of the front back plate of the substrate case so that the receiving port is exposed to the outside, and the front back plate has An electric lock comprising a connection port into which a female connector at the tip of a lead wire connected to a terminal device can be inserted at a position facing the male connector.

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