JP2008190187A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device which increases the accuracy of a power transmission release operation force, and which enhances operation reliability on the occurrence of a malfunction. <P>SOLUTION: This lock device comprises: a dead operation cam which is rotatively operated by an operation by a manual operation portion in addition to an actuator; a first rotator which is rotatively driven in a reciprocating manner in synchronization with the actuator; a second rotator 6 which is concentrically connected to the first rotator; and a clutch portion 12 which makes a play angle of the first rotator set by regulating a range of rotation of an angle regulating protrusion in a clutch recess by an angle regulating wall 11, while the angle regulating protrusion 9, arranged on either of the first and second rotators, is fitted into the other clutch recess 10. The angle regulating protrusion is urged in an outer peripheral direction by a spring, and a second clutch recess 14, which is partitioned with the angle regulating wall, is formed in the clutch recess. When predetermined torque is imposed on a section between the first and second rotators, the angle regulating protrusion is permitted to be rotated in the second clutch recess over the angle regulating wall, so that the rotational operation of only the first rotator can be performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a locking device.

  As a locking device that performs locking and unlocking using an actuator, those described in FIGS. 1 to 11 of Patent Document 1 are known. In this conventional example, the locking device includes a drive gear that is rotationally driven by a motor, an engagement plate that rotates concentrically with the drive gear, and an engagement protrusion that is fixed to the drive arm and protrudes from the surface of the drive gear. The engagement plate elastically engages the engagement portion and is connected to the drive gear in the rotation direction to restrict the rotation range of the engagement protrusion.

Since the engagement protrusion is free to rotate within a predetermined rotation range, the operation to the drive arm by manual operation using this range can be performed without receiving resistance by the motor, and the motor is stopped. Even when the above occurs, by releasing the engagement of the engaging portion with the drive arm by the rotational operation force by manual operation, the drive arm can be operated without receiving resistance by the motor.
JP 2007-2458 A

  However, in the above-described conventional example, since the engaging portion is engaged with and disengaged from the drive gear using the elasticity of the engaging plate, it is difficult to set and manage the engaging / disengaging operation force. There is a disadvantage of being inferior.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a lock device that improves the operation reliability when a problem occurs by increasing the accuracy of the power transmission release operation force.

  The locking device includes a dead operation cam 3 that can be operated by the manual operation unit 2 and driven by the actuator 1, and the dead bolt 4 is locked and unlocked by the rotation of the dead operation cam 3. For example, when a motor is used as the actuator 1 and power is taken out by the worm gear, the actuator 1 cannot be driven by the operating force from the output side. The clutch portion 12 that cuts off the transmission of the operation force from the manual operation portion 2 to the actuator 1 is required.

  The clutch portion 12 is constructed between the opposed flat plate portions 7 and 8 of the first and second rotating bodies 5 and 6 disposed on the power transmission path by the actuator 1, and the angle restricting protrusion 9 disposed on either of them is provided. It is formed by fitting into the other clutch recess 10. The clutch recess 10 is formed so that the angle restricting protrusion 9 can move by a predetermined angle around the rotation center of the first and second rotating bodies 5 and 6, and the play angle between the first and second rotating bodies 5 and 6. I will provide a.

  For example, the first rotating body 5 rotates counterclockwise in the case of a locking operation and rotates clockwise by a predetermined angle in the unlocking operation, then returns to the initial rotation position, and the free angle of the clutch portion 12 Corresponds to the operating angle of the first rotating body 5 associated with the locking / unlocking operation. As a result, for example, when the second rotating body 6 is driven to be locked by the actuator 1 and is rotated to the locking rotation position, the play angle is increased in the unlocking direction with respect to the first rotating body 5 returned to the initial rotation position. The second rotating body 6, that is, the dead operation cam 3 can be operated by the manual operation unit 2 using the play angle.

  Further, when the actuator 1 stops during the locking / unlocking operation and the manual operation unit 2 is operated to return to the original state, the operation force is transmitted to the second rotating body 6 and interlocked with the actuator 1. Therefore, a large rotational torque exceeding the torque at the time of normal operation is generated at the boundary with the first rotating body 5 that cannot rotate, that is, the clutch portion 12.

  When the rotational torque is generated, the angle restricting projection 9 that has been angle-regulated by the angle restricting wall 11 of the counterpart clutch recess 10 by the biasing force of the spring 13 receives the center direction component force received from the contact position with the angle restricting wall 11. To move toward the center against the biasing force. The clutch recess 10 is formed with a second clutch recess 14 that is partitioned by an angle restricting wall 11, and moves into the second clutch recess 14 over the angle restricting wall 11 that has moved in the center direction from the boundary on the rotation center side. Then, the second rotating body 6, that is, the dead operation cam 3 can be rotated with respect to the first rotating body 5 by using the moving range in the second clutch recess 14.

  In the present invention in which the angle restricting protrusion 9 is urged by the spring 13, the urging force of the angle restricting protrusion 9 can be accurately determined. It is possible to accurately determine the operating torque of the clutch portion 12 at the time, and the operation reliability is improved.

  The angle restricting projection 9 can be configured as a rotating member that is rotatably connected to a mounted rotating body or as a slider that translates, and the spring 13 is also a torsion spring 13 or a compression member. Any of the springs 13 can be used.

  Furthermore, when the power unit 20 in which the actuator 1, the clutch unit 12, and the first and second rotating bodies 5, 6, etc. in which the clutch unit 12 is constructed is incorporated in the same unit case 19, Since the main mechanism is completed only by assembling, the assembly workability of the lock device is improved.

  According to the present invention, since the accuracy of the power transmission release operating force can be increased, the operation reliability when a problem occurs can be increased.

  As shown in FIGS. 1 and 2, the lock device is formed by accommodating a dead bolt 4 driven by a power unit 20 in a lock case 21, and is used by being fixed to a door body 22.

  As shown in FIG. 4, the lock case 21 is formed in a hollow box shape by closing the upper opening of the lower case 23, which rises on four sides, with the upper case 24, and the mounting plate 25 is fixed to the front end surface. The The mounting plate 25 provides a fixing flange to the door body 22 when being inserted into the door body 22 and fixed. After the fixing plate 25 is fixed to the door body 22, the mounting plate 25 is covered with a decorative plate 26.

  As will be described later, the power generated in the power unit 20 is output to the output shaft (first rotating body 5), and the relay gear 27 connected to the output shaft 5 is rotated. The rotation of the relay gear 27 is transmitted to the dead operation cam 3 through the rack member 28.

  As shown in FIGS. 2 and 3, the dead operation cam 3 includes an input gear 3 a and a dead operation arm 3 b, and is driven to rotate between about 90 ° locking / unlocking rotation positions with the locking / unlocking operation of the power unit 20. When the dead operation cam 3 is rotationally driven to the locking rotation position side, the dead operation arm 3b pushes the locking driven portion 4a formed on the dead bolt 4 forward, and the tip of the dead bolt 4 jumps forward. Move to the locked position. In addition, when the dead operation cam 3 is rotationally driven to the unlocking rotation position side from this state, the dead operation arm 3b pushes the unlocking driven part 4b of the dead bolt 4 backward, and the dead bolt 4 is moved to FIG. Move to the unlocking position shown in.

  In addition, as shown in FIG. 1B, in order to drive the dead bolt 4 by the cylinder lock 2 fixed to the door body 22 or the thumb turn device 2, the rotation center of the dead operation cam 3 has a cylinder lock. A connecting hole 3c for fitting a rotary shaft member such as 2 is formed.

  A link rod 29 is connected to the dead operation cam 3, and one end portion of the link rod 29 penetrates a support column 30 erected on the lock case 21 so as to be freely slidable from the side. The link rod 29 is wound with a compression spring 29b pressed at one end to the column 30 and at the other end to a stopper flange 29a formed on the link rod 29. Stop moderation at the end position.

  As shown in FIG. 6, the rack member 28 has an input formed in a plate shape with a metal material at the other end of a synthetic resin rack main body 28b having a relay gear side rack 28a meshing with the relay gear 27 at one end. It is formed by fixing the gear side rack 28c. The relay gear 27 is mounted on the rack slide surface 20a formed by lowering a part of the outer peripheral wall surface of the power unit 20 so that the outer periphery is exposed. The relay gear side rack 28a is connected to the rack slide surface 20a and the upper case 24. It is formed to a thickness that can be inserted into the gap between the wall surfaces.

  A rib for reducing sliding resistance is formed at a sliding contact portion of the rack body 28b with the rack slide surface 20a. Further, a rack guide for supporting the back surface of the relay gear side rack 28a on the rack slide surface 20a. 20b is formed.

  The rack body 28b is movable over the entire length with the inner wall surface 24a of the upper case 24 as a sliding surface. The sliding contact portion of the relay gear side rack 28a with the upper case 24 and the opposite end of the rack body 28b are A rib 28d is formed in sliding contact with the inner wall surface 24a of the upper case 24.

  In order to improve the sitting of the rack member 28 around the moving direction line to prevent the rack member 28 from falling in this direction and to prevent the occurrence of poor meshing, the rib 28d has the full width of the rack body 28b, that is, the movement of the rack member 28. It is formed over the entire length in the direction orthogonal to the direction. Further, in order to prevent the rolling in the above direction, the rack guide 20b is formed at a height that substantially matches the overall height of the relay gear side rack 28a, thereby increasing the bearing size.

  Further, the rack member 28 is guided in the direction of movement of the input gear side rack 28 c by the guide column 31 erected on the lock cases 24 and 23, and on the rack support portion 31 a formed at the base end portion of the guide column 31. Supported. The guide strut 31 uses a peripheral wall of an insertion member 33 of a screw 32 that connects the upper and lower cases 21, and a rack support portion 31 a is formed by externally fitting an idle ring to the insertion member 33.

  As shown in FIG. 5, a synthetic resin guide member 34 is fixed to the lock case 21 in order to smoothly slide the dead bolt 4 and prevent the generation of abnormal noise during operation. The guide member 34 has a guide surface with which the side wall of the dead bolt 4 is in sliding contact, and is formed in a U-shaped cross section. The guide member 34 is formed in a rectangular cylindrical shape with a pair of substantially the same shape as that shown in the figure, and surrounds the entire side wall of the dead bolt 4, but only one guide member 34 is shown in FIG.

  Further, a stopper lever 35 is connected to the lock case 21 so as to be swingable around a support shaft 36. The stopper lever 35 has a cylindrical dead stopper 35a at the tip, and is biased counterclockwise in FIG. 5 by a torsion spring 13 (not shown). The stopper lever 35 is pushed up to the upper stroke end position by interfering with the dead operation arm 3b while the dead operation cam 3 moves from the locking rotation position to the unlocking rotation position.

  The dead bolt 4 is formed by bending a thick steel plate into a U shape. The dead bolt 4 is fitted to the guide member 34 so as to be freely slidable in the longitudinal direction with the open cross-section facing downward, and a stopper step 4c is formed at the rear upper end. As shown in FIG. 3, when the dead bolt 4 is in the locked position, the stopper step 4c is locked by the dead stopper 35a and restricts the movement of the dead bolt 4 toward the unlocked position.

  As described above, the dead stopper 35a is driven to the upper stroke end side prior to the initial rotation of the dead operation cam 3 to the unlocking rotation position side, that is, prior to the movement of the dead bolt 4 to the unlocking position side. The engagement with the step 4c is released, and the dead bolt 4 is allowed to move to the unlocked position side.

  A sickle member 37 is pivotally supported on the dead bolt 4 so as to be swingable around a support shaft 38. As shown in FIG. 1, the sickle member 37 is formed by fixing cover plates 37B on both surfaces of a core plate portion 37A, and includes a locking claw 37a and an operating projection 37b at front and rear ends. When the dead bolt 4 is in the unlocked position, the sickle member 37 has a locking claw 37a stored in the dead bolt 4 as shown in FIG. 2 so that it does not collide with the strike of the locking claw 37a during the locking operation. Take a retracted position to prevent contact. This retracted posture is maintained by the operating projection 37b climbing on the interference portion 34a formed on the guide member 34. When the dead bolt 4 moves to the locking position side from this state, as shown in FIG. In addition, the operating protrusion 37 b comes into contact with the sickle operating protrusion 34 b formed on the guide member 34, and applies a rotational force to the sickle member 37 counterclockwise.

  As shown in FIG. 1, by the rotation of the sickle member 37, the locking claw 37a of the sickle member 37 projects from the lower end edge of the dead bolt 4, and thereafter the strike 39 is in the dead bolt 4 detaching direction, that is, the left side in FIG. Is moved to the peripheral wall of the strike hole 39a, the movement in this direction is restricted.

  Details of the power unit 20 are shown in FIG. The power unit 20 includes a motor 1 housed in a unit case 19 formed by connecting an upper unit case 19B in which the rack slide surface 20a is formed to a lower unit case 19A and the power of the motor 1 to the output shaft 5. A gear train for converting to rotational power, a switch necessary for controlling the motor 1, and the like are provided. The gear train rotates the worm 40 fixed to the rotating shaft 1a of the motor 1 to the worm wheel 41, the first gear 42, the second gear 43, the last stage gear as the second rotating body 6, and the output shaft 5. It is configured to transmit in order. In order to supply power to the motor 1 or input / output a control signal, a lead wire 44 is drawn into the unit case 19.

  As shown in FIG. 7A, the final gear 6 is mounted in a posture in which the flat plate portion 8 is sandwiched between the lower unit case 19 </ b> A and the printed board 45. The printed circuit board 45 is provided with a shaft insertion hole 45a into which a cylindrical shaft portion 5a of the output shaft 5 described later is inserted, and the shaft portion 6a protruding from the final gear 6 is fitted into the lower unit case 19A. A bearing concave portion 19a and a shaft fixing projection 19b that protrudes from the center of the bearing concave portion 19a and is fitted to a through-shaped shaft through hole 6b formed in the shaft portion 6a of the final gear 6 are formed.

  As shown in FIGS. 9 and 10, the final stage gear 6 is formed by projecting the shaft portion 6 a on the back surface of the flat plate portion 8, and a clutch slider 15 that constitutes the clutch portion 12 on the surface opposite to the shaft portion 6 a formation surface. Is installed. A pair of clutch sliders 15 having the same shape reversed is used, and the angle restricting protrusion 9 is projected from the center of the slider base part 16 and formed into a T shape. The clutch slider 15 has a slide protrusion 46 that protrudes from the back surface of the angle restricting protrusion 9 and a spring receiving rod 18 that protrudes from the slider base portion 16, and the slide protrusion 46 is the slider receiving length of the final stage gear 6. It is slidably inserted into the hole 6c.

  In the mounted state, the spring receiving rods 18 can penetrate through the through holes 17 of the other clutch sliders 15 and can move away from each other. As shown in FIG. 10, a compression spring 13 is interposed between the spring receiving rods 18, and the clutch sliders 15 are urged away from each other.

  Further, a brush 47 is fixed to the flat plate portion 8 on the side facing the printed circuit board 45 of the final gear 6. The brush 47 is formed of a metal material having good conductivity, and as shown in FIG. 10D, a contact protrusion 47b is formed at the free end of the leg 47a.

  This final gear 6 is driven until it reaches one of the locking and unlocking operation positions once from the neutral rotation position in accordance with one locking and unlocking operation, and then reversely rotates to return to the neutral rotation position again. 11 (a), in order to detect the rotational position of these final gears 6, a ground pattern 49 (reference potential pattern) and a position detection pattern 50 are concentric with the shaft insertion hole 45a. Formed on top.

  As shown in FIG. 11B, when the final gear 6 is in the neutral rotation position, the contact protrusion 47b is in contact with both the ground pattern 49 and the position detection pattern 50, so both the patterns 49 , 50 are short-circuited via the brush 47, and the position detection pattern 50 becomes the ground potential. From this state, when the final gear 6 moves to the unlocking operation position shown in FIG. 11C or the locking operation position shown in FIG. 11D, the contact protrusion 47b is disengaged from the position detection pattern 50. The position detection pattern 50 changes to a drive potential.

  The potential change of the position detection pattern 50 is notified to the controller (not shown) via the pattern wiring formed on the printed board 45 or to the controller (not shown) via the connector and the lead wire 44. This is used as a control confirmation signal.

  As shown in FIGS. 7B and 15, one end of the unit case 19 is fixed to the shaft fixing protrusion 19 b and a fixed shaft 48 is erected on the unit case 19, and the output shaft 5 is idled around the fixed shaft 48. Can be installed freely. As shown in FIG. 12, the output shaft 5 has a cylindrical shaft portion 5 a on one surface of the flat plate portion 7, and the cylindrical shaft portion 5 a is inserted through the shaft insertion hole 45 a of the printed circuit board 45. The

  A brush 47 is formed on the flat plate portion 7 of the output shaft 5 so as to face the printed circuit board 45. The brush 47 is formed of a thin plate material having good conductivity, and is provided with a contact protrusion 47b at the free end of the leg 47a, similar to that used for the final gear 6 described above.

  Further, the flat plate portion 7 of the output shaft 5 is formed with a clutch recess 10 that constitutes the clutch portion 12 together with the clutch slider 15 described above. Corresponding to the fact that the final gear 6 has the two angle restricting protrusions 9 in the backward position, the clutch recess 10 is formed at two symmetrical positions across the rotation center of the output shaft 5. Each of the clutch recesses 10 and 14 has a first arcuate surface 10a centered on the rotation center of the output shaft 5 and an angle restricting wall 11 as a boundary. The clutch slider 15 has the angle restricting projection 9 having the first arcuate surface 10a. In this state, the rotation can be made within a range corresponding to an angle θ (90 ° in this embodiment) whose rotation range is regulated by the angle regulating wall 11.

  A second clutch recess 14 is formed adjacent to the clutch recess 10 with the angle regulating wall 11 as a boundary. The second clutch recess 14 has a second arcuate surface 14a having a smaller diameter than the angle restricting wall 11 and the first arcuate surface 10a as a boundary, and the clutch slider 15 has a small rotation locus diameter of the angle restricting projection 9 Only in the second clutch recess 14 can be rotated.

  The operation of the clutch unit 12 will be described with reference to FIG. First, FIG. 13A shows a case where the final gear 6 is in the neutral position and the output shaft 5 is in the unlocked state. When the motor 1 is locked and driven from this state, the final gear 6 rotates 90 ° counterclockwise and shifts to the state shown in FIG. Under the above conditions, the angle restricting projection 9 is in a state in which the wall in the counterclockwise direction is in contact with the angle restricting wall 11, so that the output shaft 5 follows the rotation of the final gear 6 and counterclockwise. It rotates 90 ° around and moves to the locked position shown in FIG.

  As described above, the last gear 6 rotates 90 ° counterclockwise and then rotates again in the opposite direction, that is, clockwise, to return to the neutral position. This state is the end of the locking operation, and this state is shown in FIG. When the unlocking drive is performed again from the locked state, the final gear 6 rotates clockwise with the output shaft 5 from the state of FIG. 13C, transitions to the state of FIG. Only the step gear 6 returns to the neutral position, and the unlocked state shown in FIG.

  Further, for example, when the locking operation is performed using the manual operation unit 2 in the unlocked state of FIG. 13A, the rotational operation force from the manual operation unit 2 is input to the output shaft 5, and the output shaft 5 is It rotates counterclockwise, which is the locking direction rotation. As shown in FIG. 13 (a), the output shaft 5 is provided with a play angle counterclockwise by an angle that matches the driving angle (90 °) when the final gear 6 is locked and unlocked. As a result, the locking and unlocking operation can be performed without resistance from the gear train without the last gear 6 following the rotation.

  Further, for example, when the motor 1 is stopped during the unlocking drive by the motor 1 from the locked state shown in FIG. 13C and the state shown in FIG. To return to the state, since there is a play angle in the unlocking direction, it is sufficient to rotate the output shaft 5 clockwise.

  On the other hand, when the output shaft 5 is forcibly rotated counterclockwise, the cam surface formed at the tip of the angle regulating protrusion 9 receives a component force directed inward from the angle regulating wall 11. When the operating torque reaches a predetermined value and the component force exceeds the reaction force of the compression spring 13, the clutch slider 15 moves toward the center against the reaction force of the compression spring 13, and as a result, the result shown in FIG. As shown, the angle restricting projection 9 enters the second clutch recess 14 beyond the angle restricting wall 11. In this state, the output shaft 5 can be idled with respect to the final gear 6 which cannot be rotated by the gear train, and can be rotated to a desired locking position.

  Further, a ground pattern 49 and a position detection pattern 50 for detecting the rotational position of the output shaft 5 are formed on the printed circuit board 45. These patterns are formed on the surface facing the brush 47 forming surface of the output shaft 5, that is, the surface opposite to the surface formed by the position detection pattern 50 of the final gear 6.

  The position detection pattern 50 includes an unlock detection pattern 50A and a lock detection pattern 50B. In FIG. 14A, the lock detection pattern 50B, the unlock detection pattern 50A, and the lock detection are clockwise from the long ground pattern 49. The pattern 50B and the unlock detection pattern 50A are arranged in this order.

  Therefore, in this embodiment, as shown in FIG. 14B, when the output shaft 5 is in the unlocked position, the unlock detection pattern 50A is short-circuited to the ground, and in the locked position shown in FIG. The detection pattern 50B and the ground pattern 49 are short-circuited. When a potential change due to a short circuit with the ground pattern 49 is detected by a control unit (not shown), it is possible to know the completion of locking and unlocking.

  Using this, the control unit drives the motor 1 in either direction of locking / unlocking and waits for detection of an output change from the locking / unlocking detection pattern 50A. When an output change is detected, a drive command in the reverse direction is output to the motor 1. When the position detection pattern 50 corresponding to the final gear 6 detects the return to the neutral position of the final gear 6, the driving of the motor 1 is stopped. To do.

  As shown in FIG. 8, the power unit 20 is formed by fixing the upper unit case 19 </ b> B to the lower unit case 19 </ b> A to which the output shaft 5 or the like is mounted, and is assembled into the lock case 21. As shown in FIG. 15, the fixed shaft 48 erected in the power unit 20 in the state of being incorporated in the lock case 21 protrudes upward through the output shaft 5 and is fixed to the upper case 24.

  By fixing the fixed shaft 48 in the power unit 20 to the lock case 21, it is possible to prevent the output shaft 5 and the like from being tilted and to make the operation smooth. The positional relationship with the component to be positioned can be accurately determined.

It is a figure which shows this invention, (a) is a side view which shows a locking state, (b) is a 1B direction arrow directional view of (a). It is a figure which shows the inside of a locking device. It is a figure which shows the inside of the locking device at the time of locking. It is a figure which shows the assembly of a locking device, (a) is a figure which shows the state which fixes an upper case to a lower case, (b) is a figure which shows the state which fixes an attachment plate and a decorative plate to a lock case. It is a figure which shows the state which removed the dead bolt, (a) is a figure which shows the state which the dead bolt moved to the locking position, (b) is a figure which shows the state in the middle of the dead bolt moving to the unlocking position. It is a figure which shows a rack member, (a) is a disassembled perspective view, (b) is a perspective view after assembly, (c) is a figure which shows a mounting state, (d) is a 6D direction arrow of the rack member in (c). FIG. It is a figure which shows the assembly process of a power unit. It is a perspective view which shows the procedure which fixes an upper unit case to a lower unit case and completes a power unit. It is a figure which shows the last stage gear, (a) is a figure which shows an assembly method, (b) is a 9B direction arrow directional view of a clutch slider. It is a figure which shows the last stage gear, (a) is a top view, (b) is a 10B-10B sectional view taken on the line, (c) is a 10C-10C sectional view, and (d) is an enlarged view which shows a contact protrusion. . It is a figure which shows a printed circuit board, (a) is explanatory drawing which showed the pattern of the back surface with the continuous line, (b) is explanatory drawing which shows the relationship between the brush and pattern in a neutral position, (c) (d) is other than neutral position It is explanatory drawing which shows the relationship between the brush and pattern in a rotation position. It is a figure which shows an output shaft, (a) is a top view, (b) is the 12B-12B sectional view taken on the line of (a), (c) is a 12C direction arrow view of (b). It is a figure which shows operation | movement of a clutch part. It is a figure which shows a printed circuit board, (a) is explanatory drawing which showed the pattern of the surface with the continuous line, (b) is explanatory drawing which shows the relationship between the brush and pattern in an unlocking position, (c) is in the rotation position of a locking position. It is explanatory drawing which shows the relationship between a brush and a pattern. FIG. 15 is a sectional view taken along line 15A-15A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Actuator 2 Manual operation part 3 Dead operation cam 4 Dead bolt 5 1st rotary body 6 2nd rotary body 7, 8 Flat plate part 9 Angle control protrusion 10 Clutch recessed part 11 Angle control wall 12 Clutch part 13 Spring 14 Second clutch recessed part DESCRIPTION OF SYMBOLS 15 Clutch slider 16 Slider base part 17 Through-hole 18 Spring receiving rod 19 Unit case 20 Power unit

Claims (5)

In addition to the actuator, a dead bolt that is locked and unlocked by a dead operation cam that is rotated by an operation by a manual operation unit, and
A first rotating body that is driven to reciprocate between an initial rotation position in conjunction with an actuator and an operation rotation position in which the rotation direction is reversed due to a difference in the type of locking and unlocking operation;
A second rotating body connected concentrically to the first rotating body;
An angle regulation protrusion, which is configured between the opposed flat plate portions of the first rotating body and the second rotating body, is disposed in either one of the clutch recesses, and an angle in the clutch recess is formed by the angle restriction wall. A clutch portion that regulates the rotation range of the restricting protrusion and sets a play angle that matches the drive angle of the first rotating body between the first and second rotating bodies;
The angle restricting protrusion of the clutch portion is biased in the outer circumferential direction by a spring, and the clutch recessed portion is formed with a second clutch recessed portion partitioned by an angle restricting wall,
When a predetermined torque is applied between the first and second rotating bodies, the angle restricting protrusion is allowed to rotate in the second clutch recess beyond the angle restricting wall, and the rotation operation of only the first rotating body is performed. A locking device that enables.   The locking device according to claim 1, wherein the angle restricting protrusion is formed on a clutch slider which is urged by a compression spring and is movable in translation in the outer circumferential direction.   3. The locking device according to claim 2, further comprising a pair of clutch sliders with the angle regulating projections facing away, wherein each clutch slider is urged in an outer peripheral direction by a compression spring interposed between the clutch sliders. A pair of clutch sliders formed with a through hole at one end of a slider base portion having an angle restricting projection projecting at the center and a spring receiving rod projecting at the other end opposite to the angle restricting projection. However, it is mounted by inserting the other spring receiving rod into one through hole,
The locking device according to claim 2, wherein each clutch slider is urged in an outer peripheral direction by a compression spring wound around each spring receiving rod.   5. The locking device according to claim 1, wherein the clutch unit is housed in a power unit that houses an actuator and a gear train that transmits power of the actuator to an output unit in a unit case.

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