JP4946449B2 - Unlocking device - Google Patents

Description

  The present invention is an unlocking device that transmits an operation force of the unlocking operation to release the lock state of the lock mechanism, and removes the operation force of the unlocking operation to make the lock mechanism in a lockable state, Specifically, the output of the motor is converted into a reciprocating motion between two positions, the converted output is transmitted to the lock mechanism, the lock state of the lock mechanism is released in one position state between the two positions, and the other position state. The present invention relates to a lock release device having a conversion mechanism that makes a lock mechanism in a lockable state.

  An example of this type of unlocking device is Patent Document 1. The lock release device of Patent Document 1 includes an electric switch that is energized when trying to release the lock state of the lock mechanism, a motor that is operated by supplying power by energizing the electric switch, and an output of the motor in two positions. Conversion to reciprocal motion between the two, transmission of the converted output to the lock mechanism, release the lock mechanism in one position between two positions, and change the lock mechanism to a lockable state in another position And a mechanism. Specifically, the conversion mechanism includes a base gear that meshes with the worm gear of the motor, an inertia plate that is arranged below and coaxially and engages with the base gear via a neutral spring, and above and coaxially with the base gear. And a link gear meshing with the swing gear, and an interlocking pin for interlocking the link gear and the base gear.

  When the electric switch is energized, the base gear is rotated via the worm gear of the motor, and the inertia plate is also rotated by the neutral spring, whereby the circumferential groove between the base gear and the link gear is rotated. The clutch pin protrudes inside. As a result, the clutch pin engages with the engagement convex portion of the link gear and the link gear rotates, and the swing gear swings in the left-right direction in response to the rotation of the link gear. The connected member is pulled and locked. This series of movements is made by continuously supplying drive power from the electric switch to the motor for a sufficiently long time. When the motor stops, the inertia plate is returned to the initial state (neutral state) by the neutral spring biased in the reverse rotation direction. At this time, the guide pin is accommodated in the base gear and the engagement with the engaging projection is released, so that the interlocking relationship between the base gear and the link gear is released.

Japanese Patent Laid-Open No. 7-208008

  As described above, in Patent Document 1, the output of the motor is converted into a reciprocating motion between two positions by the conversion mechanism, and one electric switch is operated while the lock mechanism is operated between the locked state and the unlocked state by the converted output. It is a mechanism that must continue to supply power. In this case, the electric switch must be continuously pressed until the lock mechanism can be completely unlocked, and the unlocking operation is complicated. In other words, unless the electric switch is continuously pressed, the lock mechanism cannot be reliably unlocked.

  This is a particular problem in a lock mechanism that needs to maintain the unlocked state to some extent. For example, as shown in FIG. 22, there is a vehicle seat reclining mechanism in which an internal tooth type locking mechanism is incorporated. The internal reclining lock mechanism is fixed to a seat back side bracket 100 and supported by a seat back side housing 102 having an internal gear 101 on an inner side and a seat cushion side bracket 103, and is radially inward and outward. And a lock gear 104 that meshes with the internal gear 101 by moving forward and backward. The lock gear 104 is advanced and retracted by operating a lever 106 connected to the operation member 106 incorporated via the cam plate 105 or a cable pulling operation.

  In the locked state (initial state) before the reclining angle is adjusted, the lock gear 104 is pressed from the inside toward the outside by the cam plate 105 and meshes with the internal gear 101, so that the lock gear 104 is locked to the seat back side housing 102. Has been. In order to adjust the reclining angle from this locked state, the operating member 106 is rotated by pulling the cable against the urging force of the balance spring 107, and the cam plate 105 is also rotated accordingly. Thus, the pressing force of the lock gear 104 is released. As a result, the meshing between the lock gear 104 and the internal gear 101 is released, the reclining mechanism is unlocked, and the reclining angle of the vehicle seat can be adjusted.

  Thus, in the internal-tooth type reclining lock mechanism, it is necessary to hold the unlocked state for a certain period of time while adjusting the reclining angle of the vehicle seat. However, in the unlocking device as in Patent Document 1, since the drive of the unlocking device stops immediately when the energization operation of the electric switch is stopped, it becomes difficult to adjust the reclining angle, which is referred to as the internal reclining reclining device. It is difficult to apply to the lock mechanism.

  In Patent Document 1, although the power supply is maintained for a sufficient time until the unlocking operation is performed, the power supply maintaining mechanism is configured separately from the unlocking device. Increase in size and the size of the device.

  Therefore, in view of the above circumstances, the problem to be solved by the present invention is to construct a lock release device that can maintain the operation state of the lock release device for a predetermined time even when the energization operation of the electric switch is stopped. It is in.

  In order to solve the above-described problem, the unlocking device according to the present invention transmits the operating force of the unlocking operation to release the locked state of the locking mechanism, and removes the operating force of the unlocking operation. The lock is enabled. That is, by operating the lock release device of the present invention from the initial state in which the lock mechanism is in the locked state, the lock mechanism is in the unlocked state. The lock release device includes: a first switch that is energized when attempting to release the lock state of the lock mechanism; a motor that is operated by being powered by the energization operation of the first switch; The output of the motor is converted into a reciprocating motion between two positions, the converted output is transmitted to the lock mechanism, the lock mechanism is unlocked in one position state between the two positions, and the lock mechanism in another position state. And a holding mechanism that holds the power supply to the motor during one reciprocation between the two positions by the output of the motor in response to the energization operation of the first switch. And means.

  The lockable state does not necessarily mean a state in which the lock mechanism is locked, but particularly means a displaceable state in which the lock mechanism can be brought into a lock state at any time without receiving a regulating force. Also, converting the motor output into reciprocating motion between two positions means converting the motor's three-dimensional rotational output into a two-dimensional motion that reciprocally swings up and down, left and right, or diagonally. means. As long as the output of the motor is finally converted into a reciprocating motion, the output of the motor may be directly received and converted, or may be converted indirectly through a plurality of mechanisms or parts. As long as the power supply to the motor is maintained during one reciprocation between the two positions, the electrical switch may be in the energized state or in the electrically shielded state during that time. When the lock mechanism is unlocked in one position between two positions and the lock mechanism can be locked in another position, the lock mechanism is always locked or unlocked at both end positions of the reciprocating motion. There is no need, and the lock mechanism may be unlocked at an intermediate position of the reciprocating motion as long as the lock mechanism is unlocked or unlocked at both ends of the reciprocating motion.

  In addition, as the holding means, a second switch that supplies power to the motor by a parallel circuit different from the circuit of the first switch, and rotates by receiving the output of the motor and operates the second switch Cam mechanism. The second switch is configured to be in an energized state only while the cam mechanism rotates once in response to the output of the motor by the energization operation of the first switch.

  When the cam mechanism is rotated by receiving the output of the motor, there are various patterns depending on the cam mechanism and other constituent members. However, the cam mechanism may directly receive the output of the motor or other members. Or you may receive indirectly through a mechanism. In addition, since the limiter switch is energized only during one rotation of the cam mechanism, the cam mechanism is rotated once while the reciprocation between the two positions by the motor output is performed once. Become.

  Specifically, the cam mechanism is configured such that a part of the cam mechanism can come into contact with the second switch, and in an initial state before the first switch is energized, A part of the cam mechanism abuts or the second switch is separated from the cam mechanism, and the second switch is in a state of shielding electricity. Then, when the cam mechanism is rotated in response to the output of the motor by the energization operation of the first switch from this initial state, the second switch is separated from the cam mechanism, or the second switch and the The cam mechanism can be configured to come into contact with a part of the cam mechanism to be in an energized state.

  That is, the cam mechanism does not always operate the switch in a state of being in contact with the second switch, but in a certain state, a part of the cam mechanism is in contact with the second switch, and in a certain state, it is completely in contact with the second switch. The switch is operated by a displacement in a contact / separation state that is not, that is, separated. The part of the cam mechanism that can come into contact with the second switch includes a case where it is a very small part of the entire cam mechanism and a part of the entire cam mechanism.

  The conversion mechanism has a base member that receives the rotation of the motor. In addition, it is preferable that the cam mechanism is integrally formed with the base member with the rotation center of the cam mechanism being on the rotation axis of the base member. The center of rotation of the cam mechanism is set on the rotation axis of the base member. When the cam mechanism and the base member are configured separately, the rotation axis of both is made the same, and the base member is also attached to the cam mechanism. If the cam mechanism that can come into contact with the second limiter switch is formed on the base member itself, the center of the rotation locus of the portion that can come into contact with the second limiter switch is coaxial with the rotation axis of the base member. Including the case above.

  The specific cam mechanism can be constituted by a circular plate cam having a recess in a part of the outer peripheral surface thereof. In the initial state, the second switch faces the recess of the plate cam and is separated from the plate cam, and receives the output of the motor by the energization operation of the first switch. When is rotated, the second switch can be pressed on the outer peripheral surface excluding the concave portion of the plate cam to be energized.

  Alternatively, the cam mechanism may be constituted by an end face cam formed by a protrusion that protrudes from one side of the base member. In the initial state, the second switch is pressed by the projection of the end face cam so as to be in a power shielding state, and the end face cam is rotated by receiving the output of the motor by the energization operation of the first switch. When moved, the second switch and the end face cam can be separated from each other to be energized.

  By configuring the cam mechanism in this way, once the cam mechanism starts rotating after receiving the output of the motor, the limiter switch is energized, so that the motor can be driven even if the energization operation of the electrical switch is stopped. In response to this, the cam mechanism also continues to rotate. When the cam mechanism rotates once and the relative relationship between the limiter switch and the cam mechanism returns to the initial state, the lock release device automatically enters a power-shielding state and stops.

  The conversion mechanism includes a base member that receives the rotation of the motor, a conversion member that rotates in conjunction with the base member, and a reciprocating motion that can reciprocate between two positions by receiving the rotation of the conversion member. It is comprised with the member. In this case, the base gear converts the rotation direction of the motor, and the conversion member that rotates in the conversion direction of the base gear converts the reciprocating member into a reciprocating motion between two positions.

  The conversion member rotates in conjunction with the base member, and there are various patterns depending on the configuration of the conversion member and the base member. For example, the conversion member rotates integrally with the base member, or the base member rotates. In addition to rotating in a leading or trailing manner, the rotation output of the base member may be received via another member.

  Specifically, the worm gear is fixed to the rotating shaft of the motor, the base member is a base gear that meshes with the worm gear, and the conversion member is a conversion gear that rotates in conjunction with the base gear. The reciprocating member is a reciprocating gear having a gear surface that meshes with the conversion gear. As a result, the base gear meshing with the worm gear changes the rotation direction of the motor, and the conversion gear rotating in the conversion direction of the base gear uses the reciprocating gear meshing with the left and right as a fulcrum. Can be converted into a reciprocating rocking motion.

  Alternatively, a worm gear is fixed to the rotating shaft of the motor, the base member is a base gear that meshes with the worm gear, and the conversion member is formed to protrude from the surface of the base gear and has a notch in a part of the peripheral surface. A circular protruding wall may be used, and the reciprocating member may be a reciprocating rod that contacts the protruding wall. According to this, in the initial state, one end in the longitudinal direction of the reciprocating rod is housed in the notch of the projecting wall, and while the base gear is rotated by receiving the rotation of the worm gear, One end in the longitudinal direction of the reciprocating bar comes out of the notch of the projecting wall and slidably contacts the outer peripheral surface of the projecting wall, so that the reciprocating bar can be converted into a left and right reciprocating swing motion with the supporting shaft as a fulcrum.

  The outer peripheral circular protruding wall having a notch in a part of the peripheral surface is a portion formed so as to protrude from the surface of the base member if the wall having a circular outer shape protrudes from the surface of the base member in plan view. The shape itself does not matter. For example, it can be a peripheral wall formed in a C-shape, or a column having a notch directed radially inward in part.

  Furthermore, a worm gear is fixed to the rotating shaft of the motor, the base member is a base gear that meshes with the worm gear, the conversion member can be rotated synchronously with the base gear, and the rotating shaft is in an eccentric position. An eccentric rotator may be used, and a yoke body surrounding the eccentric rotator may be used as the reciprocating member. In this case, the conversion mechanism is a so-called Scotch yoke mechanism.

  As another example of the conversion mechanism, a base member that receives the rotation of the motor and converts the rotation direction of the motor is connected to an eccentric position of the base member, and linear reciprocation by rotation of the base member It is also preferable to constitute a crank mechanism having a reciprocating member to be converted into

  According to the present invention, the holding means for holding the power supply to the motor is provided while the reciprocation between the two positions by the output of the motor in response to the energization operation of the first switch is performed once. Once the motor is started by operating the first switch, the holding means holds the power supply to the motor. Therefore, even if the energization operation of the first switch is stopped immediately, the unlocking device continues to operate automatically for a predetermined time, and there is no need to keep pressing the electric switch until the lock mechanism is unlocked. .

  Further, since the holding means has the second switch for supplying power to the motor by a parallel circuit different from the circuit of the first switch, it is affected by the energization / interruption operation of the first switch. Independent, reliable power supply is possible. Since the cam mechanism that operates the second switch also rotates in response to the output of the motor, the conversion mechanism and the holding means share one motor, and an efficient drive mechanism is achieved while preventing an increase in the number of parts. It is possible. Further, the second switch is energized only while the cam mechanism rotates once in response to the motor output from the energization operation of the first switch. In other words, in the initial state before the unlocking operation, the unlocking device according to the present invention once the first switch is energized to the operating state, even if the energization operation of the first switch is immediately stopped. The cam mechanism continues to rotate, and when the cam mechanism rotates once, the second switch is automatically turned off and the operation of the unlocking device stops. Therefore, a series of movements from the initial state to the operating state, the restoration to the initial state, and the automatic stop of the lock release device can be reliably functioned.

  If a limiter switch that supplies power to the motor through a parallel circuit different from the circuit of the electrical switch is used for the holding circuit mechanism, power is supplied to the motor independently and reliably without being affected by the energization operation of the electrical switch. be able to. If the limiter switch is operated by a cam mechanism that rotates in conjunction with the base gear, it is not necessary to bother to operate the holding circuit mechanism, and the power supply to the motor can be held easily and reliably. In addition, since the power supply time by the holding circuit mechanism is adjusted so that the reciprocating motion between the two positions is performed once during one rotation of the cam mechanism, the unlocking operation of the locking mechanism by the unlocking device is efficient. Can be done. In other words, there is no wasteful movement in which a plurality of unlocking operations are performed carelessly by a single electric button operation, and there is no inconvenience that power supply is stopped before unlocking is performed.

  Since the second switch is operated only by changing the contact state with the cam mechanism, a reliable operation is possible without employing a complicated mechanism. At this time, if the cam mechanism and the base member are laminated, it is advantageous for making the apparatus compact. Moreover, if a crank mechanism, a scotch-yoke mechanism, or the like is employed as the conversion mechanism, the motor output direction can be converted smoothly and reliably.

  Hereinafter, embodiments of the unlocking device according to the present invention will be described with reference to the drawings. However, the present invention is not limited thereto, and various modifications can be made without departing from the scope of the present invention. The lock release device of the present invention can be applied to various lock mechanisms, but can be suitably used particularly for a lock mechanism of a vehicle such as an automobile. For example, as shown in FIG. 1, it can be used as an unlocking device 1 for a lock mechanism 111 incorporated in a vehicle seat 110 of an automobile. Specifically, the locking mechanism 111 of the vehicle seat 110 and the unlocking device 1 are connected to each other through the cable 6 inside the vehicle seat 110, and the unlocking device 1 is attached to the side wall near the rear gate at the rear of the vehicle. The installed electric switch (remote switch) 4 is connected to an electric cable 113 wired inside the vehicle. Then, when the electric switch 4 is pressed, the lock release device 1 supplied with power through the electric cable 113 is actuated, the cable 6 is pulled, and the lock mechanism 111 is released as shown in FIG. Accordingly, the lock mechanism 111 of the vehicle seat 110 can be easily released from the rear gate side by remote operation.

  In other words, the unlocking device 1 of the present invention transmits the operation force of the unlocking operation to release the lock mechanism, and the lock mechanism becomes lockable by removing the operation force of the unlocking operation. It is. It is noted that the lock release device 1 is configured such that once the electric switch 4 is pressed, the lock release device 1 continues to operate for a predetermined time without pressing the electric switch 4. When the unlocking device 1 has been activated and the neutral state has been removed from the operation force of the unlocking operation, the traction force of the cable 6 is released and the lockable state is established. As shown in FIG. It becomes locked.

  Needless to say, the arrangement of the lock mechanism 111, the lock release device 1, and the electric switch 4 shown in FIG. 1 is merely an example. Moreover, the lock mechanism 111 shown in FIG. Below, the lock release apparatus 1 of this invention is demonstrated in detail, showing a specific Example. At that time, directions such as up and down and left and right may be described as appropriate with reference to the directions shown in the drawings. However, these are directions for convenience of explanation, and these directions are not limited as long as the relative positional relationship of each member is within the scope of the gist of the illustrated state.

Example 1
3 to 7 show a first embodiment of an unlocking device 1 according to the present invention. FIG. 3 is a plan view showing an initial state of the unlocking device 1, and the electric circuits C1 and C2 are conceptually illustrated. FIG. 4 is an exploded perspective view of the unlocking device 1. In addition, although this lock release apparatus 1 may be constructed | assembled in the casing formed in the predetermined shape, and can also be constructed | assembled in the board member in the vehicle seat 110, in this specification, especially both. The casing bottom or board member is represented as the substrate 2 without distinction. FIG. 5 is a plan view showing the arrangement of the mechanism for extending and retracting the interlocking pin 18 in the initial state. FIG. 6 is a plan view showing a series of movements of the unlocking device 1 from the neutral state (initial state) to the operating state and returning to the initial state again. FIG. 7 is a longitudinal side view of the lock release device 1 in each state shown in FIG. 6. 7A is a cross-sectional view taken along line AA in FIG. 6A, FIG. 7B is a cross-sectional view taken along line BB in FIG. 6B, and FIG. FIG. 7 is a cross-sectional view taken along line CC in FIG. In the present specification and drawings, the unlocking device 1 is described and illustrated in a state where the unlocking device 1 is constructed on the horizontally arranged substrate 2. However, the present invention is not limited to this, and the substrate 2 arranged vertically or inclinedly is not limited thereto. It may be constructed on the side surface or on the lower surface of the horizontal substrate 2. That is, while maintaining the state illustrated in each drawing, the vehicle seat or the like can be equipped in a state of being inverted upside down or vertically.

  As shown in FIG. 3 and FIG. 4, the lock release device 1 operates by being supplied with electric power by the electric switch 4 that is energized when attempting to release the lock state of the lock mechanism, and by the energization operation of the electric switch 4. A motor 5, a conversion mechanism 7 that converts the output of the motor 5 into a reciprocating motion between two positions, and transmits the converted output to a lock mechanism (not shown) via a cable 6 as a transmission member; And holding means 8 for holding power supply to the motor 5. A worm gear 11 is fixed to the rotating shaft 10 of the motor 5, and the electric switch 4 and the motor 5 are connected by a circuit C1. The worm gear 11 has a sufficient length so that the rotational output of the motor 5 can be reliably transmitted to the conversion mechanism 7 even from a position some distance away.

  The conversion mechanism 7 is engaged with the base gear 12 that meshes with the worm gear 11 fixed to the rotating shaft 10 of the motor 5, the link gear 13 that rotates in conjunction with the base gear 12, and the link gear 13. The swing gear 15 is configured to be swingable about a shaft 14 as a fulcrum. The base gear 12 and the link gear 13 are circular and have gear teeth formed on the entire outer peripheral surface. On the other hand, the swing gear 15 has a substantially ginkgo leaf shape including a fan-shaped gear portion 15a and a rod-shaped transmission portion 15b continuous from the rear corner portion thereof, and gear teeth are formed on the arc-shaped side surface of the gear portion 15a. The cable 6 is connected to the tip of the transmission part 15b. The link gear 13 and the swing gear 15 have the same thickness. Reference numeral 16 denotes a hook that holds and holds a tension coil spring 21 that urges the swing gear 15 to the initial position in the neutral state. The other ends are respectively hooked on hooks 16 fixed to predetermined locations of the casing or the substrate 2. In addition, an interlocking hole 22 that penetrates the base gear 12 and the plate cam 26 in the thickness direction is formed at an eccentric position of the base gear 12. A plate cam 26 is integrally formed on one surface (lower surface) of the base gear 12 as a constituent member of the holding means 8 described later.

  Further, as an interlocking mechanism for rotating the link gear 13 in conjunction with the base gear 12, the interlocking piece 17 integrally formed with the link gear 13 and the interlocking hole 22 can be projected and retracted, and project from the interlocking hole 22. An interlocking pin 18 that interlocks the base gear 12 and the link gear 13 by contacting the interlocking piece 17 in the state, and a convex guide 19 and a restricting piece 20 that restrict the vertical movement of the interlocking pin 18 are configured. Yes. The interlocking piece 17 has a horizontally long rectangular column shape extending radially outward from the center of the link gear 13, and its radial (left and right) length is radially outward from the position where the interlocking hole 22 is drilled. It is formed in a protruding length. As shown well in FIG. 5, the restricting piece 20 comprises a fan-shaped restricting portion 20a and a circular base portion 20b continuous from the rear corner of the restricting portion 20a. As shown in FIG. A shaft core 20d is integrally formed on the lower surface.

  The lower axis 20d of the restriction piece 20 is fixed at a predetermined position of the substrate 2, so that the restriction piece 20 is not rotatable in a state where it floats upward from the substrate 2 by a predetermined amount. The base gear 12 and the link gear 13 have the plate cam 26 and the interlocking piece 17 on the lower side, in this order, on the shaft core 20d on the upper side of the base portion 20b of the restricting piece 20, and in the radial center of both the gears 12 and 13. It is mounted through the inserted through holes 12a and 13a. As a result, the base gear 12 and the link gear 13 are stacked one above the other with the same rotation axis. However, if the interlocking mechanism is not functioning, the two gears 12 and 13 are independent and free. It can be rotated. Therefore, the lock release device 1 has a structure in which the substrate 2, the regulating piece 20, the plate cam 26, the base gear 12, the interlocking piece 17, and the link gear 13 are laminated in this order from below (see FIG. 7). .

  At that time, the interlocking pin 18 is inserted into the interlocking hole 22 from below, and the motor 5 is provided adjacent to the base gear 12 and the worm gear 11 as shown in FIGS. Further, as shown in FIG. 4, an insertion hole 15c is formed in a continuous portion of the gear portion 15a and the transmission portion 15b of the swing gear 15, and the swing gear 15 is mounted through the support shaft 14 therethrough. Yes. A large-diameter portion 14a having a predetermined height from the substrate 2 is formed below the support shaft 14, and when the swing gear 15 is mounted on the support shaft 14, the lower surface thereof is received by the upper surface of the large-diameter portion 14a. As a result, the link gear 13 and the swing gear 15 are set to mesh at the same height. 23 is a stop pin that prevents the swing gear 15 from excessively overstroke and disengagement from the link gear 13 when the swing gear 15 returns to the initial state by the biasing force of the tension coil spring 21.

  In FIG. 3, the holding means 8 includes a limiter switch 25 that supplies power to the motor 5 and a cam mechanism that can come into contact with and separate from the limiter switch 25. The cam mechanism is a flat plate cam 26 integrally formed on the lower surface of the base gear 12 and on the same rotation shaft, and is arranged so as to come into contact with and separate from the limiter switch 25 on the outer peripheral surface thereof. That is, a concave portion 27 that is recessed inward in the radial direction is formed on a part of the outer peripheral surface of the plate cam 26. When the limiter switch 25 faces the concave portion 27, the swing terminal 25a of the limiter switch 25 is By being accommodated in the recess 27, a state of electric shielding is obtained. On the other hand, when the limiter switch 25 faces the outer peripheral surface other than the concave portion 27 of the plate cam 26, the limiter switch 25 is pressed by the plate cam 26 to be energized. At this time, since the plate cam 26 is formed to have a larger diameter than the base gear 12, even if the limiter switch 25 is larger than the thickness of the plate cam 26, reliable energization / interruption is achieved without contacting the base gear 12. The electric operation is secured. The limiter switch 25 and the motor 5 are connected by a circuit C2 different from the circuit C1 of the electric switch 4, and both the circuits C1 and C2 are in parallel. FIG. 8 conceptually shows this.

  The state shown in FIG. 3 is a neutral state before the unlocking operation. That is, this state is an initial state, and the limiter switch 25 is in a power-shielding state facing the plate cam 26, the swing gear 15 is urged to the left by the tension coil spring 21, and the cable 6 has a traction force. Since it is not working, the locking mechanism is locked. Although the interlocking piece 17 and the interlocking hole 22 are adjacent to each other, as shown in FIG. 5, the interlocking pin 18 is located in front of the rotation direction of the convex guide 19, so that the interlocking piece 17 is immersed in the interlocking hole 17. There is no contact. The convex guide 19 is a member for causing the interlocking pin 18 to protrude from the interlocking hole 22 as the base gear 12 rotates, and has a predetermined height in a C shape from above the substrate 2 as shown in FIGS. And projectingly formed so as to face and coincide with the orbit of the interlocking pin 18. On the contrary, the restricting piece 20 is a member for reliably immersing the interlocking pin 18 protruding from the interlocking hole 22, and the outer peripheral side of the restricting portion 20 a overlaps with the inner half of the circulation locus of the interlocking pin 18. . In addition, between the projecting state where the interlocking pin 18 rides on the convex guide 19 and the immersive state where the interlocking pin 18 is pushed down by the restricting piece 20, the both ends in the rotational direction of the convex guide 19 and the restricting piece 20 are interlocked. One pin 18 is separated.

  Next, a series of operation mechanisms of the lock release device 1 will be described with reference to FIGS. 6 and 7. When the electric switch 4 as the first switch is energized from the initial state shown in FIGS. 3 and 5, power is supplied through the circuit C1, and the motor 5 rotates. The rotation output of the motor 5 causes the base gear 12 engaged with the worm gear 11 of the motor 5 to rotate counterclockwise as shown in FIG. That is, the worm gear 11 and the base gear 12 of the motor 5 mesh with each other in an index parel cam shape, and the base gear 12 converts the vertical rotation of the motor 5 into a plane rotation. The plate cam 26 integrally formed with the base gear 12 also rotates synchronously in the same direction as the base gear 12, so that the limiter switch 25 as the second switch is pressed on the outer peripheral surface of the plate cam 26 and energized. The power supply from the circuit C2 becomes possible. Immediately after the unlocking operation shown in FIG. 6A, power can be supplied from both the circuits C1 and C2. Along with this, the interlocking pin 18 also circulates around the rotation axis of the base gear 12, and the interlocking pin 18 rides on the convex guide 19 and protrudes from the interlocking hole 22 as shown in FIG. As shown in FIG. 6 (A), the interlocking piece 17 starts to rotate counterclockwise on the base gear 12 while being pressed by the interlocking pin 18. At the same time, the link gear 13 integrated with the interlocking piece 17 also rotates counterclockwise. Furthermore, the swing gear 15 that receives the rotation of the link gear 13 and meshes with it swings in the left-right direction (arrow direction) with the support shaft 14 as a fulcrum against the urging force of the tension coil spring 21. The cable 6 is pulled and the operation force of the unlocking operation starts to be transmitted to the lock mechanism.

  7B and 7C, the vertical height of the interlocking pin 18 is flush with or slightly flush with the upper surface of the base gear 12 when the interlocking pin 18 is in an immersive state on the substrate 2. By being set to a low level, reliable synchronous rotation with the base gear 12 is ensured. Further, the interlocking pin 18 includes a circular base portion 18 a having a larger diameter than the short width of the interlocking hole 22 in order to prevent the interlocking pin 22 from coming off upward from the interlocking hole 22. The height (thickness) of the base portion 18a, the convex guide 19 and the regulating piece 20 is substantially the same, and is set to about half of the distance from the upper surface of the substrate 2 to the lower surface of the plate cam 26. Therefore, in a state where the interlocking pin 18 rides on the convex guide 19, the upper surface of the base portion 18 a of the interlocking pin 18 is close to the lower surface of the plate cam 26 so that the interlocking pin 18 reliably protrudes from the interlocking hole 22. It has been. Similarly, when the interlocking pin 18 is embedded in the lower surface of the restricting piece 20, the upper surface height of the base portion 18a is less than about half of the distance from the substrate 2 to the plate cam 26, so that the interlocking pin 18 is reliably interlocked. It is intended to be immersed in the hole 22. 4 and 5, the rotation direction start end side of the convex guide 19 is a tapered surface 19 a that is inclined from the lower surface toward the upper surface toward the rear in the rotation direction so that the interlocking pin 18 can easily ride. Further, as well shown in FIG. 7B, the rotation direction start end surface of the restriction portion 20a of the restriction piece 20 is also a tapered surface 20c that is inclined rearward in the rotation direction from the upper surface toward the lower surface. The outer peripheral surface of the base portion 18a of the interlocking pin 18 is also tapered to incline toward the bottom from the upper surface to the lower surface.

  Even if the energization operation of the electric switch 4 is stopped from the state of FIG. 6A, the circuit C2 is kept in the energized state, so that the lock release device 1 as shown in FIGS. 6B and 6C. Continues to operate. Then, when the operation force of the unlocking operation is transmitted via the cable 6, the swing gear 15 shown in FIG. 6 (B) is greatly swung while the lock mechanism is displaced to the unlocked state. As shown in FIG. 7B, when the interlocking pin 18 passes through the end of the convex guide 19 in the rotational direction, the interlocking pin 18 is immersed in the interlocking hole 22 due to its own weight, and the contact with the interlocking piece 17 is prevented. Canceled. At this time, the operation force of the unlocking operation is removed.

  When the contact between the interlocking piece 17 and the interlocking pin 18 is released, as shown in FIG. 7 (C), the interlocking pin 18 sinks into the lower surface of the restricting piece 20 and is surely immersed in the interlocking hole 22. As shown in FIG. 6C, the base gear 12, the interlocking pin 18, and the plate cam 26 rotate in the forward direction (counterclockwise) as they are, but the link gear 13, the interlocking piece 17, and the swing gear 15 are tensioned. Since the urging force of the coil spring 21 rotates and swings in the reverse direction, the lock mechanism is displaced to the locked state. At this time, even if the interlocking pin 18 is lifted from the substrate 2, the interlocking pin 18 can smoothly enter below the restriction piece 20 by the base portion 18 a slidingly contacting the tapered surface 20 c of the restriction piece 20 as it rotates. It is like that.

  Finally, by further rotating from the state shown in FIGS. 6C and 7C, the limiter switch 25 shown in FIGS. 3 and 5 is restored to the initial state facing the recess 27 of the plate cam 26. Then, the circuit C2 is interrupted and the unlocking device 1 automatically stops. At this time, since the tension coil spring 21 returns to the natural length, the swing gear 15 does not basically overstroke beyond the initial state, but the swing gear 15 swings back from the operating state to the initial state. In this case, the swinging of the swing gear 15 is reliably prevented by the swinging of the swinging pin 15 being restrained by the restraining pin 23.

  As described above, in the lock release device 1 according to the first embodiment, the conversion mechanism 7 converts the output of the motor 5 into a reciprocating swinging motion between the left and right positions. As shown in FIG. 9, once the electric switch 4 (circuit C1), which is the first switch, is energized, the limiter switch 25 (circuit C2), which is the second switch, is energized. Even if the energization operation of the electric switch 4 (circuit C1) is immediately stopped, the energization state of the limiter switch 25 (circuit C2) is maintained while the plate cam 26 makes one rotation, and is automatically shut off when the initial state is restored again. The lock release device 1 stops in an electric state. As a result, while the reciprocating swinging motion between the two left and right positions of the swing gear 15 is performed once, the unlocking device 1 reliably continues to operate, so that the locking mechanism is reliably released without pressing the electric switch 4 for a long time. can do.

  In the lock release device 1 of the first embodiment, the interlocking pin 18 can be immersed in the interlocking hole 22 by its own weight, so that the regulating piece 20 is not necessarily required. However, in the case where the pin is mounted upside down, for example, the interlocking pin 18 cannot be automatically inserted into the interlocking hole 22, so that the regulating piece 20 is essential.

  The interlocking hole 22 in the first embodiment is a rectangular hole, and the pin portion 18a of the interlocking pin 18 is also a prismatic shape. However, these can be circular or other polygonal shapes. In this case, even if the direction of the interlocking pin 18 changes in the interlocking hole 22, the base portion 18 b is formed in a circular shape having a larger diameter than the width dimension of the interlocking hole 22, so that it can be prevented from coming off. Since the entire outer peripheral surface of the base portion 18b is tapered, the taper surface 20c of the restriction piece 20 can be smoothly slidably contacted from any direction.

(Example 2)
The second embodiment is a modification of the first embodiment, specifically, a modification of the mechanism in which the interlocking pin 18 protrudes and retracts from the interlocking hole 22, and the basic mechanism is the same as that in FIG. This is the same as FIG. 6, FIG. 8, and FIG. Therefore, the second embodiment will explain differences from the first embodiment. In addition, FIG. 10 shows a characteristic mechanism of the second embodiment of the unlocking device 1 according to the present invention. FIG. 10 corresponds to a cross-sectional view taken along the line II of FIG. 3 in the initial state of the unlocking device 1.

  As shown well in FIG. 10, the interlocking pin 18 in the second embodiment has a base portion 18a having a cylindrical shape, and a groove 18c is formed around the pin portion 18b on the upper surface of the base portion 18a. The cross section is in a mountain shape. And the compression coil spring 30 is extrapolated by the pin part 18b, and is engage | inserted in the groove | channel 18c. In this state, by inserting the interlocking pin 18 into the interlocking hole 22 from below, the upper end of the compression coil spring 30 comes into contact with the lower surface of the plate cam 26 and is compressed, so that the interlocking pin 18 is always urged downward. ing.

  When the base gear 12 and the plate cam 26 are rotated by receiving the output of the motor 5 by the energization operation of the electric switch 4, the interlocking pin 18 rides on the convex guide 19 against the biasing force of the compression coil spring 30 and interlocks. Project from the hole 22. When the rotation further proceeds and passes through the end of the convex guide 19 in the rotational direction, the interlocking pin 18 is surely immersed in the interlocking hole 22 by the urging force of the compression coil spring 30.

  Therefore, the lock release device 1 according to the second embodiment is not provided with the restriction piece 20 that pushes down the interlocking pin 18. The other parts are the same as those in the first embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

(Example 3)
11 to 12 show a third embodiment of the unlocking device 1 according to the present invention. FIG. 11 is a perspective view of the base gear 12. FIG. 12 is a plan view showing a series of operating mechanisms of the unlocking device 1, FIG. 12A shows an initial state (neutral state), and FIG. 12B shows that the unlocking device 1 is energized for a predetermined time. FIG. 12C shows the unlocked state in which the state is held, and the state immediately before the conversion mechanism 7 makes one revolution and returns to the initial state. The third embodiment is also a modification of the first embodiment, in which the conversion mechanism 7 converts the output of the motor 5 into a reciprocating oscillating motion between two left and right positions, and the holding means 8 is a reciprocating oscillating motion between two positions. The basic configuration for maintaining the energized state of the motor 5 during one reciprocation is the same as that of the first embodiment, but the specific configuration of the conversion mechanism 7 is different. Therefore, the third embodiment will be described focusing on differences from the first embodiment.

  As shown in FIG. 11, in the conversion mechanism 7 of the third embodiment, an outer circular projecting wall having a notch in part is used instead of the link gear 13 in the first embodiment. That is, a plate cam 26 constituting the holding means 8 is integrally formed on the base gear 12 that meshes with the worm gear 11 of the motor 5, and a C-shaped peripheral wall 35 is formed so as to protrude from the opposite surface. In place of the swing gear 15 of the first embodiment, a swing rod 36 that can slide in contact with the outer peripheral surface of the protruding wall 35 is used. The diameter of the plate cam 26 in the third embodiment is the same as the diameter of the base gear 12 in order to make the lock release device 1 compact. Therefore, the thin limiter switch 25 is used so that the limiter switch 25 does not come into contact with the base gear 12 to prevent a reliable energization / interruption operation. In addition, it is possible to reduce the thickness of only the swing terminal 25a of the limiter switch 25, increase the thickness of the plate cam 26, or increase the distance between the substrate 2 and the plate cam 26.

  As shown well in FIG. 12, in the initial state shown in FIG. 12A, one end in the longitudinal direction of the swing rod 36 is housed in the cutout of the peripheral wall 35, and the rotational direction of the peripheral wall 35 is applied by the urging force of the tension coil spring 21. It is in contact with the starting end. In this state, when the electric switch 4 as the first switch is energized, the motor 5 rotates, and the base gear that meshes with the worm gear 11 of the motor 5 as shown in FIG. 12 begins to rotate counterclockwise. At the same time, the plate cam 26 integrally formed with the base gear 12 also rotates synchronously in the same direction as the base gear 12, and the limiter switch 25, which is the second switch, is pressed on the outer peripheral surface of the plate cam 26 to be in an energized state. Become. Furthermore, simultaneously with the rotation of the base gear 12, the peripheral wall 35 formed integrally with the base gear 12 starts to rotate counterclockwise around the rotation axis of the base gear 12. Accordingly, one end side of the swing rod 36 that is housed in the cutout of the peripheral wall 35 is pushed by the peripheral wall 35, so that the support shaft 14 is used as a fulcrum against the urging force of the tension coil spring 21 in the left-right direction (arrow direction). The outer wall of the peripheral wall 35 is slidably contacted while swinging and maintaining the posture as it is. When the swing rod 36 is in the posture shown in FIG. 12B, the cable 6 fixed to the other end of the swing rod 36 is pulled, and the lock mechanism is unlocked. Moreover, since the posture of the swing bar 36 is maintained while the swing bar 36 is in sliding contact with the outer peripheral surface of the peripheral wall 35, the unlocked state can be maintained for a predetermined time.

  Further, when the base gear 12 and the like are further rotated and the swing bar 36 has passed the end of the rotation direction of the peripheral wall 35, the base gear 12 and the plate cam 26 are forward (counterclockwise) as shown in FIG. The swing rod 36 swings in the notch of the peripheral wall 35 in the reverse direction by the urging force of the tension coil spring 21. In the state shown in FIG. 12C, the lock mechanism is brought into a lockable state by removing the pulling force of the cable 6 by the swing rod 36, that is, removing the operation force of the unlocking operation. Finally, by further rotating from this state, the limiter switch 25 shown in FIG. 12A is restored to the initial state facing the concave portion 27 of the plate cam 26, and the lock release device 1 automatically stops.

  The notch dimension of the peripheral wall 35 can be appropriately designed according to the time when the unlocked state is desired to be maintained. That is, if the notch dimension of the peripheral wall 35 is increased, the timing for restoring the swing rod 36 to the initial posture is accelerated, so that the unlocked state can be shortened. Conversely, if the notch dimension of the peripheral wall 35 is decreased, the swing bar 36 The unlocking state can be lengthened by delaying the restoration timing to the initial posture. However, since the swing bar 36 swings in the notch, the notch size needs to be equal to or greater than the swing stroke of the swing bar 36. Even if the notch size is increased and the initial state restoration timing of the swing rod 36 is advanced, the overstroke in the restoring direction of the swing rod 36 is reliably restrained by the restraining pin 23, so that the swing rod 36 is attached to the peripheral wall 35. Never jump out of the notch. Others are the same as those in the first embodiment, and the same members are denoted by the same reference numerals and the description thereof is omitted.

  Thus, in Example 3, since the interlocking mechanism like Example 1 is unnecessary, the number of parts can be reduced. Further, as shown in FIG. 13, as a method of forming a circular outer protruding wall in the third embodiment, a cylinder 37 is formed so as to protrude from the base gear 12, and a predetermined part of which is recessed inward in the radial direction. A cutout portion having dimensions may be formed.

Example 4
14 to 18 show a fourth embodiment of another form of the unlocking device 1 according to the present invention. FIG. 14 is a perspective view showing an initial state of the lock release device 1. FIG. 15 is an exploded perspective view of the lock release device 1. FIG. 16 is a circuit wiring diagram of the unlocking device 1. FIG. 17 is a plan view showing a series of movements in which the conversion mechanism 7 of the unlocking device 1 changes from the neutral state (initial state) to the operating state and returns to the initial state again, and the base gear is not shown. 18 is a vertical side view of the holding means 8 in each state shown in FIG. 18A corresponds to the initial state of FIG. 17A, and FIG. 18B corresponds to the state of FIG. 17B with the link gear rotated 90 degrees. 18 (C) corresponds to the state of FIG. 17 (C) in which the link gear is rotated 180 degrees, and FIG. 18 (D) is a state immediately before the conversion mechanism 7 returns to the initial state. It corresponds to the state of.

  The lock release device 1 includes an electric switch 4 (see FIG. 16) that is energized when attempting to release the lock state of the lock mechanism, a motor 5 that is powered and activated by the energization operation of the electrical switch 4, A conversion mechanism 7 that converts the output of the motor 5 into a linear reciprocating oscillating motion between two positions and transmits the converted output to a lock mechanism via a cable 6 as a transmission member, and the motor 5 for a predetermined time. Holding means 8 for holding the power supply to the.

  14 to 17, the conversion mechanism 7 is integrally formed with a base gear 39 that meshes with the worm gear 11 fixed to the rotating shaft 10 of the motor 5, and the upper surface of the base gear 39 with the same rotating shaft. The first link gear 40 that rotates synchronously with the base gear 12, the second link gear 41 that meshes with the first link gear 40 at the same height, and the two link gears 40, 41 receive the rotation between the two positions. And a link mechanism converted into a linear reciprocating rocking motion. The base gear 39, the first link gear 40, and the second link gear 41 are formed to have substantially the same thickness, and the first link gear 40 and the second link gear 41 have the same diameter, and the base gear 39 Is smaller than the diameter. As well shown in FIG. 15, the link mechanism includes a first link 43 whose one end in the longitudinal direction is pivotally supported by a fixed pin 42 at an eccentric position of the first link gear 40 (base gear 39), The second link 45 is pivotally supported at one end in the longitudinal direction by a fixed pin 44 at an eccentric position of the two link gear 41, and one end in the longitudinal direction is the other end in the longitudinal direction of the first link 43 and the second link 45. The third link 47 is pivotally supported by a round bar pin 46 so as to be swingable.

  The worm gear 11 and the base gear 39 of the motor 5 mesh with each other in the form of an index parel cam, and the first link gear 40 integrally formed on the upper surface of the base gear 39 is transmitted to the second link gear 41. It is the composition to do. In this sense, the base gear 39 and the first link gear 40 function as the two-stage transmission gear 38. Further, the first link 43 and the second link 45 function as direction return links that receive the rotation of the first link gear 40 and the second link gear 41, respectively, and return the third link 47 to the reciprocating motion. On the other hand, the third link 47 functions as an output link for outputting a conversion output to the cable 6 as a transmission member fixed to the other end in the longitudinal direction. In this sense, hereinafter, the first link 43 is referred to as a first direction conversion link, the second link 45 is referred to as a second direction conversion link, and the third link 47 is referred to as an output link. That is, in the lock release device 1 of the fourth embodiment, the base gear 39 converts the longitudinal rotation of the motor 5 into the plane rotation, and the first and second link gears 40 and 41 convert the converted output into the first and second. A crank mechanism that converts the output link 47 into a swinging motion between two positions via the direction change links 43 and 45 is employed.

  As shown in FIG. 15, the fixing pin 42 of the first link 43 and the fixing pin 44 of the second link 45 respectively include a lower semicircular portion 42a and 44a and an upper circular portion 42b and 44b continuous thereto. Have. When both the fixing pins 42 and 44 are inserted into the semicircular fixing hole 38a of the two-stage transmission gear 38 and the semicircular fixing hole 41a of the second link gear 41, the circular portions 42b and 44b are respectively formed on the upper surface of the two-stage transmission gear 38 and By being received by the upper surface of the second link gear 41, the downward drop is prevented. The fixed pin 42 of the first link 43 is longer than the fixed pin 44 of the second link 45 in accordance with the thickness of the two-stage transmission gear 38. Then, the link mechanism inserts the thin-walled portion 45a of the second link 45 between the bifurcated portions 43a of the first link 43, overlaps the third link 47 from above, and passes the round bar pin 46 to pass 3 The two links 43, 45, 46 are connected to each other so as to be swingable with the round bar pin 46 as a fulcrum. In addition, since the through hole is not formed in the lower bifurcated portion 43a of the first link 43, the round bar pin 46 is prevented from coming off downward.

  The holding unit 8 includes a limiter switch 50 that supplies power to the motor 5 and a cam mechanism that can come into contact with and separate from the limiter switch 50. As shown in FIG. 14, the limiter switch 50 in the fourth embodiment includes the left and right plate terminals 51, 51 to which power supply wires are connected (see FIG. 16) and the two terminals 51, 51 from the substrate 2 side. It is comprised with the mountain-shaped terminal 52 distribute | arranged so that contact / separation is possible. Further, as shown in FIG. 18, the cam mechanism in the fourth embodiment is an end face cam mechanism that is configured by a protrusion 53 that protrudes downward from an eccentric position on the lower surface of the two-stage transmission gear 38.

  In FIG. 15, reference numeral 55 denotes a support shaft serving as the rotational axis of the two-stage transmission gear 38, and 56 denotes a support shaft serving as the rotational axis of the second link gear 41. Large-diameter portions 55a and 56a are formed below the both support shafts 55 and 56, respectively. When the two-stage transmission gear 38 and the second link gear 41 are mounted on both support shafts 55 and 56, respectively, The step transmission gear 38 is received by the upper surface of the large-diameter portion 55a of the support shaft 55, and the second link gear 41 is received by the upper surface of the large-diameter portion 56a of the support shaft 56, whereby the first link gear 40 and the second link The gear 41 is designed to mesh with the same height.

  The left and right flat plate terminals 51 and 51 of the limiter switch 50 are fastened with screws 61 on a base 57 having the same height. On the other hand, the mountain-shaped terminal 52 has a column 58 extending downward from the center of the bottom surface of the mountain-shaped top portion, and the column 58 is formed in the guide hole 60 formed in the intermediate substrate 2 between the left and right bases 57 and 57. Has been inserted. At this time, a compression coil spring 59 is extrapolated to the support column 58, and the mountain-shaped terminal 52 is always urged in a direction in contact with the flat plate terminal 51. As shown well in FIG. 18, the mountain terminal 52 is sufficiently high to protrude upward from between the flat terminal 51 in a state where the mountain terminal 52 and the flat terminal 51 are in contact with each other. In this state, the two-stage transmission gear 38 is designed so that the lower surface of the base gear 39 and the top of the mountain-shaped terminal 52 are close to each other. Moreover, the downward protrusion amount of the protrusion 53 of the end face cam is designed to be close to the top of the screw 61.

  The limiter switch 50 is wired as shown in FIG. 16, and specifically, the motor 5 can be supplied with power by a parallel circuit C2 different from the circuit C1 of the electric switch 4. The conducting wire of the circuit C2 is connected to the flat terminal 51 of the limiter switch 50 by soldering or winding around the screw 61.

  Next, a series of operation mechanisms of the unlocking device 1 according to the fourth embodiment will be described. In the initial state shown in FIG. 17A, the distance between the left and right fixing pins 42 and 44 that connect the first direction change link 43 and the second direction change link 45 to the first and second link gears 40 and 41, respectively. It is in the closest position. Further, as well shown in FIG. 18 (A), the flat-plate terminal 51 and the mountain-shaped terminal 52 are separated from each other because the protruding portion 53 of the end face cam is in contact with and pressed against the mountain-shaped terminal 52. The limiter switch 50 is in a power shielding state. That is, since this state is a neutral state and no traction force is applied to the cable 6, the lock mechanism is in a locked state.

  Then, when the electric switch 4 as the first switch is energized from the initial state shown in FIG. 17A, the power is supplied through the circuit C1 and the motor 5 rotates. The rotation output of the motor 5 causes the base gear 39 meshing with the worm gear 11 of the motor 5 to rotate counterclockwise, and in synchronization with the base gear 39, as shown in FIG. Also rotates counterclockwise, and the second link gear 41 meshing with the link gear 40 rotates clockwise. As a result, the output link 47 is moved upward (reference to FIG. 17) via the direction change links 43 and 45, whereby the cable 6 is pulled, the operation force of the unlocking operation is transmitted, and the locking mechanism is unlocked. Displace to the state.

  At the same time, the protrusion 53 of the end face cam also circulates around the rotation axis of the two-stage transmission gear 38. As a result, as shown in FIG. 18 (B), when the protrusion 53 of the end face cam is separated from the limiter switch 50, the limiter switch 50 serving as the second switch is released from being pressed, and is energized. Power supply is also possible. Immediately after the unlocking operation, power can be supplied from both the circuits C1 and C2. And even if the energization operation of the electrical switch 4 is stopped from this state, the circuit C2 is kept energized, so that the unlocking device 1 continues to operate as shown in FIG. 17 (C) and FIG. 17 (D). .

  When the first and second link gears 40 and 41 are rotated 180 degrees further from the state shown in FIG. 17B, the linear swing of the output link 47 is maximum as shown in FIG. That is, it becomes the upper end position of the reciprocating motion. At this time, the total linear length of the first direction conversion link 43 and the second direction conversion link 45 is designed to be longer than the maximum separation distance between the left and right fixing pins 42 and 44. Even in a state in which the second link gears 40 and 41 are rotated 180 degrees, the first direction conversion link 43 and the second direction conversion link 45 are connected at an angle smaller than 180 degrees. This prevents the output link 47 from further swinging upward when the rotation further proceeds from the state shown in FIG.

  As the rotation further proceeds from the state shown in FIG. 17C, the output link 47 starts to drop downward (reference to FIG. 17) via the direction conversion links 43 and 45, thereby releasing the traction force of the cable 6. That is, when the operation force of the unlocking operation is removed, the lock mechanism is displaced to a lockable state. When the rotation further proceeds, as shown in FIG. 17 (D), the output link 47 once falls below the initial state, and then returns to the initial state of FIG. 17 (A). At this time, as shown in FIG. 18D, when the protrusion 53 of the end face cam approaches the mountain-shaped terminal 52 of the limiter switch 50 and reaches the initial state of FIG. When the limiter switch 50 presses the limiter switch 50, the flat plate terminal 51 and the mountain-shaped terminal 52 are separated from each other, so that the limiter switch 50 is in a power-shielding state, and the lock release device 1 automatically stops.

  As described above, in the lock release device 1 according to the fourth embodiment, the conversion mechanism 7 converts the output of the motor 5 into a linear reciprocating rocking motion between two positions. Then, as shown in FIG. 9, once the electric switch 4 as the first switch is energized, the limiter switch 50 as the second switch is energized, and immediately thereafter, the electric switch 4 is energized. Even if stopped, the energized state of the limiter switch 50 is maintained while the two-stage transmission gear 38 makes one rotation, and when it returns to the initial state again, the power is automatically shut off and the lock release device 1 stops. As a result, the lock release device 1 continues to operate reliably while the linear reciprocating swing motion of the output link 47 is performed once, so that the lock mechanism can be reliably released without long pressing the electric switch 4. Can do. Other supplemental parts are the same as those in the first embodiment.

(Example 5)
FIG. 19 shows a fifth embodiment of the unlocking device 1 according to the present invention. FIG. 19 is a plan view of the lock release device 1 in an initial state. The fifth embodiment is a modification of the fourth embodiment, and the conversion mechanism 7 eliminates the first link gear 40 in the fourth embodiment and replaces the second link gear 41 with the worm gear 11 of the motor 5. It is characterized in that it directly meshes with the meshing base gear 39 at the same height, and the first direction change link 43 is pivotably connected to the base gear 39. Therefore, since the first direction conversion link 43 receives the rotation of the base gear 39 and changes the direction of the output link 47 together with the second direction conversion link 45, the base gear 39 in the fifth embodiment is the link gear. It also serves as a function.

  This is advantageous in that the number of parts can be reduced as compared with the fourth embodiment. The other parts are the same as those in the fourth embodiment, and the same members as those in the fourth embodiment are denoted by the same reference numerals and the description thereof is omitted. In the fifth embodiment, it can also be seen that the second link gear 41 in the fourth embodiment is eliminated and the first link gear 40 is adjacently engaged with the base gear 39. Further, the worm gear 11 of the motor 5 may mesh with the second link gear 41.

(Example 6)
FIG. 20 shows a sixth embodiment of the unlocking device 1 according to the present invention. The sixth embodiment is also a modification of the fourth embodiment, in which the conversion mechanism 7 is swung on one end side in the longitudinal direction to the eccentric position of the base gear 39 and the base gear 39 that meshes with the worm gear 11 of the motor 5. The crank mechanism is composed of one link 65 that can be connected and a swing piece 66 that is swingably connected to the other end in the longitudinal direction of the link 65.

  A straight guide groove 67 is formed in the substrate 2 (not shown), and an engagement piece 68 protruding from the lower surface of the swing piece 66 is fitted into the guide groove 67 so as to be swingable. Thus, as shown in FIG. 20B, the swing piece 66 can surely perform a linear reciprocating swing motion. Since the cable 6 is connected to the swing piece 66, the cable 6 is pulled by receiving the linear reciprocating swing motion of the swing piece 66, and the lock mechanism is in the unlocked state and the lockable state. It is designed to be displaced between.

  That is, in the initial state shown in FIG. 20A, the connecting portion between the base gear 39 and the link 65 is in the lowest position (reference to FIG. 20) and is in a neutral state. From this initial state, the state shown in FIG. As the base gear 39 rotates toward the head, the swinging piece 66 swings upward, and the cable 6 is pulled, and the lock mechanism is unlocked. Subsequently, when the swing piece 66 shown in FIG. 20 (B) is in the most elevated state, the base piece 39 further rotates to move the swing piece 66 downward, and the pulling force of the cable 6 is removed accordingly. Then, the lock mechanism is displaced to a lockable state.

  As described above, the conversion mechanism 7 of the sixth embodiment is configured by the simplest crank mechanism, so that the number of parts can be reduced as compared with the fifth embodiment. Alternatively, the swing piece 66 can be removed and the cable 6 can be directly connected to the link 65. In this case, the engagement piece 68 may be formed so as to protrude from the lower surface of the link 65. Since other holding means 8 and the like are the same as those in the fourth embodiment, the same members as those in the fourth embodiment are denoted by the same reference numerals, and the description thereof is omitted.

(Example 7)
FIG. 21 shows a seventh embodiment of still another embodiment of the unlocking device 1 according to the present invention. FIG. 21 is a plan view showing a series of operating states of the lock release device 1 of the seventh embodiment. FIG. 21A shows an initial state, FIG. 21B shows a state in which the base gear 70 is rotated 90 degrees, and FIG. 20C shows that the cable 6 is the most when the base gear 70 is rotated 180 degrees. FIG. 20D shows a state in which the base gear 70 is rotated by 270. FIG. Since the holding means 8 of the seventh embodiment employs an end face cam mechanism and a limiter switch similar to those of the fourth to sixth embodiments, the illustration thereof is omitted. It should be noted here that a scotch-yoke mechanism is employed as the conversion mechanism 7.

  Specifically, as shown in FIG. 20, the conversion mechanism 7 of the seventh embodiment includes a base gear 70 as a base member that meshes with the worm gear 11 of the motor 5, and an eccentric rotating body that rotates in synchronization with the base gear 70. The eccentric disc 71, a yoke body 72 which is a part of a reciprocating member surrounding the eccentric disc 71, and a swing rod 73 fixed to the yoke body 72.

  The base gear 70 has a circular plate shape, and gear teeth are formed over the entire outer peripheral surface. The base gear 70 is rotatable about a support shaft 75 and meshes with the worm gear 11 of the motor 5 in the form of an index parel cam. A protrusion (not shown) constituting an end face cam as the holding means 8 is formed so as to protrude from the lower surface eccentric position of the base gear 70. The eccentric disc 71 is also a flat plate like the base gear 70, but has a larger diameter than the base gear 70, and its rotation axis is formed at a position decentered by a predetermined dimension from the radial center of the eccentric disc 71. ing. The eccentric disc 71 is laminated on the surface of the base gear 70 opposite to the projection of the end face cam, that is, the upper surface, and the base gear 70 and the eccentric disc 71 are synchronized around the same support shaft 75. It is configured to rotate. Accordingly, as shown well in FIG. 20, the eccentric disc 71 is installed in a state of protruding a predetermined amount outward in the radial direction of the base gear 70. Note that gear teeth are not formed on the eccentric disc 71.

  A yoke body 72 is disposed outside the eccentric disc 71 so as to surround it. The yoke body 72 has a rectangular outer shape, and a horizontally elongated hollow portion 76 is formed in a penetrating manner in the thickness direction. The shape of the hollow portion 76 is such that the vertical length is substantially the same as the diameter of the eccentric disc 71 with reference to the drawing, and the left and right lengths are substantially the same as the left and right lengths of the rotational trajectory of the eccentric disc 71. Designed. Therefore, when the eccentric disk 71 rotates in the cavity 76 of the yoke body 72, the cavity 76 of the yoke body 72 allows the eccentric disk 71 to move in the left-right direction but moves in the up-down direction. Therefore, when the eccentric disc 71 rotates about the support shaft 75, the yoke body 72 is converted into a linear reciprocating swinging motion in the vertical direction. The yoke body 72 has the same thickness as the eccentric disc 71 and is located at the same height as the eccentric disc 71. Thereby, when the yoke body 72 swings as will be described later, contact with the motor 5 is prevented from causing malfunction.

  A swing rod 73 is integrally formed on one outer surface (lower surface in the drawing) of the yoke body 72, and a cable 6 for transmitting a conversion output to the lock mechanism is connected to the tip of the swing rod 73. Further, on the left and right outer sides of the yoke body 72, a guide wall 77 is secured on the substrate 2 (not shown) to ensure a smooth linear reciprocating swinging motion of the yoke body 72. The motor 5 is installed through the rotary shaft 10 in an installation recess 78 that is recessed downward in the guide wall 77.

  In the initial state shown in FIG. 20A, since the eccentric disc 71 is located below the base gear 70, the yoke body 72 and the swing rod 73 surrounding it are also below, and the cable 6 includes Neutral state with no traction. That is, the lock release device 1 is in a power shielding state, and the lock mechanism is in a locked state.

  When the electric switch (not shown) is energized from the initial state shown in FIG. 20A, the motor 5 is supplied with power and starts to rotate. The rotation output of the motor 5 causes the base gear 70 that meshes with the worm gear 11 of the motor 5 to rotate counterclockwise, and the eccentric disc 71 also counteracts in synchronization with the base gear 70 as shown in FIG. Rotate clockwise. Accordingly, the yoke body 72 moves upward along the guide wall 77 and the swing rod 73 formed integrally with the yoke body 72 also moves upward, whereby the cable 6 is pulled and the lock mechanism is locked. It is displaced to the released state. Since the limiter switch is energized in this state, the energized state of the lock release device 1 is maintained even when the energization operation of the electrical switch is stopped, as in the fourth embodiment. is there.

  When the rotation further advances from the state shown in FIG. 20B and the eccentric disc 71 shown in FIG. 20C comes to a position above the base gear 70, the cable 6 is pulled to the maximum extent. When the rotation further proceeds, the eccentric disk 71 moves downward of the base gear 70 as shown in FIG. 20D, so that the traction force of the cable 6 is also removed, and the lock mechanism is locked. Displace to possible state. Finally, when returning to the initial state of FIG. 20 (A) again, the limiter switch automatically enters a power-shielding state, so that the lock release device 1 also automatically stops.

  As described above, in the lock release device 1 according to the seventh embodiment, the base gear 70 converts the vertical rotation of the motor 5 into the rotation in the plane direction, receives the conversion output of the base gear 70, and rotates synchronously therewith. The scotch-yoke mechanism in which the eccentric disc 71 that converts the yoke body 72 into a linear reciprocating oscillating motion between two positions performs the unlocking operation of the locking mechanism and removes the operating force of the unlocking operation. Thus, the lock mechanism is brought into a lockable state. Note that the swing bar 73 in the seventh embodiment is not always necessary, and the cable 6 can be directly connected to the yoke body 72.

(Other examples)
As mentioned above, although demonstrated centering on the modification of a conversion mechanism, you may apply the plate cam mechanism currently used in Example 1- Example 3 to Example 4-7, and conversely, Example. The end face cam mechanism used in the fourth to seventh embodiments may be applied to the first to third embodiments. It is also possible to design the reciprocating member to reciprocate a plurality of times during one rotation of the cam mechanism.

  In addition, when the reciprocating member is in one of the reciprocating motions between the two positions, the locking mechanism is reliably released, and when it is in another position, the locking mechanism can be reliably locked. As long as the reciprocating member is in the midway position of the reciprocating movement between the two positions, the lock may be released or the lockable state may be established. This can be set by appropriately adjusting the length of the cable 6.

It is a general-view figure which shows the example of arrangement | positioning of the lock release apparatus of this invention. It is a principal part enlarged view which shows the lock release state and lockable state of a lock mechanism. 2 is a plan view showing an initial state of Example 1. FIG. 1 is an exploded perspective view of Example 1. FIG. FIG. 3 is a layout diagram illustrating a mechanism for moving in and out of an interlocking pin according to the first embodiment. FIG. 3 is a plan view showing an operation mechanism of Embodiment 1. It is sectional drawing corresponding to each state shown in FIG. It is a circuit wiring diagram in the unlocking device. It is a conceptual diagram which shows the operation timing of a motor, a 1st switch, and a 2nd switch. FIG. 4 is a cross-sectional view corresponding to the line II in FIG. 3 of Example 2. It is a perspective view of the base gear etc. of Example 3. FIG. 10 is a plan view showing an operation mechanism of Embodiment 3. It is a perspective view which shows the modification of the protrusion wall of Example 3. FIG. 10 is a perspective view of Example 4. FIG. 10 is an exploded perspective view of Example 4. FIG. 6 is a circuit wiring diagram of Example 4. FIG. FIG. 10 is a schematic plan view showing an operation mechanism of Example 4. It is a vertical side view corresponding to each state shown in FIG. 10 is a plan view showing an initial state of Example 5. FIG. FIG. 10 is a plan view showing an operation mechanism of Example 6. FIG. 12 is a plan view showing an operation mechanism of Example 7. It is a disassembled perspective view of the lock mechanism of the reclining mechanism of a vehicle seat.

Explanation of symbols

1 Unlocking device 2 Substrate 4 Electric switch (first switch)
5 Motor 6 Cable 7 Conversion mechanism 8 Holding means 10 Rotating shaft 11 Worm gear 12, 39, 70 Base gear 13, 40, 41 Link gear 14 Support shaft 15 Swing gear 17 Interlocking piece 18 Interlocking pin 19 Convex guide 20 Regulating piece 22 Interlocking hole 25 ・ 50 Limiter switch (second switch)
26 Plate cam 27 Recess 35 Projection wall 36 Swing rod 43/45 Direction change link 47 Output link 53 Projection 65 Link 66 Oscillating piece 71 Eccentric disk 72 Yoke body 76 Cavity 100 Bracket 101 Internal gear 103 Bracket 104 Lock gear 105 Cam plate 110 Vehicle seat 111 Lock mechanism C1 and C2 circuit

Claims (7)

An unlocking device that transmits the operating force of the unlocking operation to release the locked state of the locking mechanism, and removes the operating force of the unlocking operation to make the locking mechanism lockable,
A first switch that is energized when attempting to release the lock state of the lock mechanism;
A motor that is powered and activated by an energization operation of the first switch;
The output of the motor is converted into a reciprocating motion between two positions, the converted output is transmitted to a lock mechanism, and the lock mechanism is unlocked in one position between the two positions and locked in another position. A conversion mechanism for locking the mechanism;
Holding means for holding power supply to the motor while the reciprocating motion between the two positions by the output of the motor in response to the energization operation of the first switch is performed once;
The holding means includes a second switch for supplying power to the motor by a parallel circuit different from the circuit of the first switch;
A cam mechanism that rotates in response to the output of the motor and operates the second switch;
The cam mechanism is composed of a circular plate cam having a recess in a part of the outer peripheral surface thereof.
In an initial state before energizing the first switch, the second switch faces the recess of the plate cam and is separated from the plate cam.
When the plate cam rotates in response to the output of the motor by the energization operation of the first switch, the second switch is pressed on the outer peripheral surface excluding the concave portion of the plate cam to be in an energized state.
The lock release device , wherein the second switch is in an energized state only while the cam mechanism is rotated once in response to the output of the motor by the energization operation of the first switch . An unlocking device that transmits the operating force of the unlocking operation to release the locked state of the locking mechanism, and removes the operating force of the unlocking operation to make the locking mechanism lockable,
A first switch that is energized when attempting to release the lock state of the lock mechanism;
A motor that is powered and activated by an energization operation of the first switch;
The output of the motor is converted into a reciprocating motion between two positions, the converted output is transmitted to a lock mechanism, and the lock mechanism is unlocked in one position between the two positions and locked in another position. A conversion mechanism for locking the mechanism;
Holding means for holding power supply to the motor while the reciprocating motion between the two positions by the output of the motor in response to the energization operation of the first switch is performed once;
The holding means includes a second switch for supplying power to the motor by a parallel circuit different from the circuit of the first switch;
A cam mechanism that rotates in response to the output of the motor and operates the second switch;
The cam mechanism is constituted by an end face cam formed by a protrusion formed to protrude from one side of the base member,
In an initial state before the first switch is energized, the second switch is pressed by the projection of the end face cam and is in a state of electricity shielding.
When the end face cam rotates upon receiving the output of the motor by the energization operation of the first switch, the second switch and the end face cam are separated from each other to be in an energized state.
The lock release device, wherein the second switch is in an energized state only while the cam mechanism is rotated once in response to the output of the motor by the energization operation of the first switch. The conversion mechanism includes a base member that receives rotation of the motor;
A conversion member that rotates in conjunction with the base member;
It is composed of a reciprocating member that can reciprocate between two positions under the rotation of the conversion member,
The said base member changes the rotation direction of the said motor, and the said conversion member rotated in the conversion direction of the said base member converts the said reciprocating member into the reciprocating motion between two positions. The unlocking device described. A worm gear is fixed to the rotating shaft of the motor,
The base member is a base gear meshing with the worm gear;
The conversion member is a conversion gear that rotates in conjunction with the base gear,
The reciprocating member is a reciprocating gear having a gear surface meshing with the conversion gear;
The base gear that meshes with the worm gear transforms the rotation direction of the motor, and the conversion gear that rotates in the conversion direction of the base gear reciprocates left and right with the reciprocating gear meshing with the reciprocating gear as a fulcrum. The unlocking device according to claim 3, wherein the unlocking device converts to dynamic motion. A worm gear is fixed to the rotating shaft of the motor,
The base member is a base gear meshing with the worm gear;
The conversion member is a projecting wall having a circular outer periphery that protrudes from the surface of the base gear and has a notch in a part of the peripheral surface thereof.
The reciprocating member is a reciprocating rod that contacts the protruding wall,
In the initial state, one end in the longitudinal direction of the reciprocating rod is housed in the notch of the protruding wall,
While the base gear is rotated by receiving the rotation of the worm gear, the one end in the longitudinal direction of the reciprocating rod comes out of the notch of the protruding wall and makes sliding contact with the outer peripheral surface of the protruding wall. 4. The lock release device according to claim 3, wherein the bar is converted into a left and right reciprocating swing motion about the support shaft. A worm gear is fixed to the rotating shaft of the motor,
The base member is a base gear meshing with the worm gear;
The conversion member is an eccentric rotator that can rotate synchronously with the base gear and has a rotation shaft in an eccentric position.
The reciprocating member includes a yoke body surrounding the eccentric rotating body,
The lock release device according to claim 3, wherein the conversion mechanism is a Scotch-yoke mechanism. The conversion mechanism is a base member that receives the rotation of the motor and converts the rotation direction thereof,
The lock release device according to claim 1 or 2, which is a crank mechanism having a reciprocating member connected to an eccentric position of the base member and converted into a linear reciprocating motion by rotation of the base member.

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