JP4875430B2 - Control device for key interlock actuator - Google Patents

Description

  The present invention relates to a key interlock actuator that operates a key interlock device in which a key rotor rotated by a key and a shift lever of an automatic transmission are linked to each other between a “locked” state and an “unlocked” state. This relates to the control device.

  In this type of key interlock device driven by a key interlock actuator, basically, when the shift lever is shifted to a position other than the parking position, the key rotor is moved from the “ACC” position, which is the operating position, to “ It is configured to prevent rotation to the “LOCK” position.

Then, the key interlock device is unlocked by pressing the shift knob button while the shift lever is in the parking position, or the key interlock device is locked when the shift lever is positioned at a position other than the parking position. It is like that.
The key interlock actuator controls the “unlock” operation for unlocking the key interlock device and the “lock” operation for locking.

There is a key interlock actuator using a keep solenoid as a drive source for performing the “unlock” and “lock” operations of the key interlock device. In this key interlock actuator, for example, “unlock” and “lock” operation of the key interlock device is performed by operating the shift knob button with the automatic shift lever positioned at the parking position (P position). Has been made.
However, if this shift knob button is operated continuously, the keep solenoid is energized continuously, the heat generated by the coil of the keep solenoid, the worst coil is blown, or the pre-installed temperature fuse is blown. There was a problem that the function stopped completely.

  In the key interlock device, there is, for example, Patent Document 1 listed below as one that uses a solenoid to perform the locking operation.

JP-A-7-329716

  In Patent Document 1, the solenoid is energized only when the key cylinder is set to the accessory position (“ACC” position), and a lock operation is performed to prevent the key cylinder from being turned to the off position. Further, when the ignition key is rotated, the energization to the solenoid is cut off, the energization time to the solenoid is reduced, and the temperature rise of the coil of the solenoid is reduced.

  However, in Patent Document 1, when the ignition key is operated continuously, the solenoid coil self-heats and the temperature rises. As described above, the worst coil is blown or attached in advance. There is a problem that the thermal fuse that is being blown or the function is completely stopped as a result.

  Further, in general electric circuits, there are Patent Documents 2 to 4 listed below as examples of preventing the temperature rise of the solenoid.

Japanese Utility Model Publication No. 60-71115 Japanese Patent Laid-Open No. 5-175042 JP 2000-208323 A

In the above-mentioned Patent Document 2, the DC solenoid coil is divided into two parts, and one of the divided coils is energized at the time of adsorption, and a holding current flows through the entire coil after a predetermined time. Only a short time in the initial stage of adsorption is used to suppress the temperature rise of the solenoid.
Further, in Patent Document 3, when the switching element is abnormal, current continues to flow through the positive temperature coefficient thermistor, charging resistor, and solenoid, thereby increasing the amount of current flowing through the positive temperature coefficient thermistor. Increase rapidly. The rapid increase in the resistance value of the positive temperature coefficient thermistor greatly reduces the current supplied to the solenoid, thereby preventing the solenoid from overheating and burning.

  In Patent Document 4, the solenoid is normally driven by a pulse, but the solenoid is driven only for a predetermined time even when a continuous signal is given at the time of abnormality. Is.

  In these Patent Documents 2 to 4, as in the case of Patent Document 1, when the solenoid is continuously driven, there is no means for preventing the solenoid from generating heat, and the solenoid coil still performs self-heating and the temperature rises. As described above, there is a problem that the worst coil is blown, a pre-installed thermal fuse is blown, or the function is completely stopped as a result.

The present invention has been provided in view of the above-described problems, and provides a control device for a key interlock actuator having at least the following objects.
(1) When the solenoid reaches a predetermined temperature or higher, stop driving the solenoid and prevent the coil of the solenoid and the preinstalled fuse from being blown.
(2) A temperature detection circuit is formed with a simple hardware circuit to reduce the cost in terms of circuit.

Therefore, in the key interlock actuator control device according to the first aspect of the present invention, the key is rotated when the shift lever 141 is positioned at the parking position and the interlocking member 42 is movable with respect to the regulating member 28. "Unlocked" state that can be operated,
A key interlock device in which the shift lever 141 is located at a position other than the parking position, the movement of the regulating member 28 is regulated with respect to the interlocking member 42, and the interlocking member 42 is in a movable “locked” state. With
As a drive source for driving the interlocking member 42, a keep solenoid 66 that can be driven by instantaneous energization, a temperature detection means that detects the temperature of the keep solenoid 66, and the lock operation and the unlock operation are continuously operated. And a control means for cutting off the energization of the keep solenoid 66 when the temperature detected by the keep solenoid 66 by the temperature detection means becomes equal to or higher than a predetermined temperature.

In the key interlock actuator control apparatus according to claim 2, the temperature detecting means includes a temperature sensor 160 formed of a thermistor and a voltage dividing circuit 153 formed of a resistor R connected in series with the temperature sensor 160. When the voltage across the resistor R exceeds a predetermined threshold as a result of the resistance value of the thermistor changing as the temperature rises, the energization to the keep solenoid 66 is cut off. Yes.

  4. The key interlock actuator control device according to claim 3, wherein when the temperature detected by the temperature detecting means becomes a predetermined temperature or lower, the control is returned to the normal control according to the control signal at that time. It is characterized by having means.

According to the control device for the key interlock actuator of the first aspect of the present invention, the keep solenoid 66 that can be driven by instantaneous energization as the drive source for driving the interlocking member 42 and the temperature of the keep solenoid 66 are detected. Energizing the keep solenoid 66 when the detected temperature of the keep solenoid 66 by the temperature detector when the lock operation and the unlock operation are continuously operated exceeds a predetermined temperature. since a control unit for blocking, when the keep solenoid 66 is equal to or higher than a predetermined temperature, is cut off power supply to the keep solenoid 66, thereby, the coil 97 and pre-mounted in the keep solenoid 66 It is possible to prevent the fuse being blown out, and to prevent the function from being stopped.

  According to the control device for the key interlock actuator according to claim 2, the temperature detection unit includes the temperature sensor 160 formed of a thermistor and the voltage dividing circuit 153 formed of the resistor R connected in series with the temperature sensor 160. Therefore, the temperature detecting means can be configured with a simple hardware circuit, and the cost can be reduced in terms of the circuit.

According to the control device for the key interlock actuator according to claim 3, when the temperature detected by the temperature detecting means becomes equal to or lower than the predetermined temperature, the control returns to the normal control according to the control signal at that time. is provided with the means to, to stop energization of the coil 97 at a temperature that does not lead to fusing of such coils 97 of the keep solenoid 66, the temperature of the coil 97 of the keep solenoid 66 is decreased, and returns to the normal, the driver There is no sense of incongruity or anxiety.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, before describing the key interlock actuator of the present invention, the key interlock actuator is operated to prevent the key cylinder from rotating from the “LOCK” position to the “ACC” position, and from the “ACC” position to “ The configuration of the key interlock device for preventing the rotation to the “LOCK” position will be described with reference to FIGS.

In FIG. 1, a cylinder lock 12 having a well-known configuration is disposed inside a front portion of a cylindrical housing 11, and a key rotor 13 is rotatably provided on the cylinder lock 12.
The key rotor 13 can be inserted / removed in / from the key hole 13a at the “LOCK” position, which is the locking position. It is rotated in order to the “ACC”, “ON”, and “START” positions, and the key cannot be removed at the operating position.

Further, a cam member 14 that rotates integrally with the key rotor 13 is provided behind the key rotor 13, and an ignition switch 15 provided behind the key rotor 13 is operated. It has become. The cam member 14 is provided with a first cam convex portion 16 and a second cam convex portion 17 for a key interlock device on the outer peripheral portion closer to the front portion, and on the outer peripheral portion closer to the rear portion for steering lock. The cam projection 18 is provided.
The cam member 14 is inserted and incorporated into the housing 11 from the front opening side of the housing 11 before the cylinder lock 12 is incorporated into the housing 11.

  Of the first cam convex portion 16 and the second cam convex portion 17, the first cam convex portion 16 includes, as shown in FIG. A cam surface 19 is formed. Further, the second cam convex portion 17 is formed with a second cam surface 20 formed of an inclined surface at the corner portion on the front side, and the front surface portion is used as the restricting portion 21. The restricting portion 21 is a surface orthogonal to the axial direction of the cam member 14.

  In the housing 11, a regulating member accommodating portion 22 and an interlocking member accommodating portion 23 are provided in an outer peripheral portion corresponding to the front portion of the cam member 14, and a steering portion is provided in a portion corresponding to the rear portion of the cam member 14. A lock accommodating portion 24 is provided. In this case, the restricting member accommodating portion 22 extends along the axial direction of the cam member 14, and the interlocking member accommodating portion 23 extends in a direction obliquely intersecting the restricting member accommodating portion 22. An insertion port 23 a is formed at one end of the interlocking member housing portion 23.

An interlocking member 42 connected to the cable end of the inner cable 41 of the control cable 40 constituting the key interlock actuator of the present invention, which will be described later, is connected to the interlocking member accommodating portion 23 in the longitudinal direction of the interlocking member accommodating portion 23. It is accommodated so as to be movable (slidable) along the direction. The interlocking member 42 is inserted into the interlocking member accommodating portion 23 from the insertion port 23a at one end.
A synthetic resin casing cap 44 is attached to the end of the outer casing 43 of the control cable 40, and engaging holes 46 are formed in the side pieces 45 on both sides of the casing cap 44. By engaging the engagement hole 46 with an engagement convex portion 33 a protruding from the outer surface of the end portion of the cover 33, the casing cap 44 is attached to the interlocking member accommodation portion 23 side through the cover 33. Yes.

  The shapes of the interlocking member 42 and the casing cap 44 of the control cable 40 shown in FIGS. 1 to 7 are slightly different from those described later, but are functionally the same.

The other end of the control cable 40 is provided with a solenoid that slides the interlocking member 42 in the interlocking member accommodating portion 23 in the longitudinal direction by the inner cable 41 as will be described later. Is controlled, and the interlocking member 42 is controlled to slide.
That is, the interlocking member 42 is moved to the first position shown in FIG. 2 when the shift knob button 142 (see FIG. 21) of the shift lever is pressed, and the shift knob button 142 of the shift lever is released. Accordingly, it is moved to the second position shown in FIG.

  A locking recess 47 is formed on the left side in FIG. 2 of the interlocking member 42, and the locking surface 48 on the upper side in FIG. It is a slope that crosses diagonally.

In the restricting member accommodating portion 22, the restricting member 28 is accommodated movably along the longitudinal direction of the restricting member accommodating portion 22 (the axial direction of the cam member 14) so as to straddle the interlocking member 42. As shown in FIG. 3, the regulating member 28 has a first convex portion 29 at one end and a second convex portion 30 longer than the first convex portion 29 at the other end. .
The first convex portion 29 of the restricting member 28 slides on the bottom surface of the restricting member accommodating portion 22, and the second convex portion 30 passes through the hole 31 formed in the bottom portion of the restricting member accommodating portion 22 to the cam member 14 side. It protrudes. A locking projection 32 is formed at the base end of the second projection 30.

The opening surfaces on the upper surface side in FIG. 1 of the regulating member housing portion 22 and the interlocking member housing portion 23 are closed by a cover 33. The cover 33 has a plurality of engaging claws 33b at the lower part of the peripheral part, and the engaging claw 33b is engaged with the convex part 23b at the lower part of the peripheral part of the interlocking member housing part 23, thereby 11 is detachably mounted.
When the cover 33 is attached, the insertion port 23a of the interlocking member accommodating portion 23 is opened. In this state, the interlocking member 42 is inserted from the insertion port 23a and the engagement hole 46 of the casing cap 44 is inserted. The cover 33 is engaged with the engagement convex portion 33a.

  On the other hand, the steering lock accommodating portion 24 accommodates a movable frame and a lock bar which are moved by the steering lock cam projection 18 and a spring which urges them toward the steering shaft, although not shown. It is like that. When the key rotor 13 is rotated to the “LOCK” position and the key is removed, the tip of the lock bar engages with the steering shaft to lock the steering shaft, and the key rotor 13 moves to the operating position. When it is rotated, the lock is released.

  Next, the operation of the above configuration will be described. When the key rotor 13 is positioned at the “LOCK” position and the shift lever is positioned at the parking position, the cam member 14, the regulating member 28, and the interlocking member 42 are in the state illustrated in FIGS. 2 and 3.

That is, the second cam convex portion 17 in the cam member 14 is in a position corresponding to the restricting member accommodating portion 22, and the restricting portion 21 of the second cam convex portion 17 is the By contacting the side surface, the regulating member 28 is held at the regulating position shown in FIG. Further, the steering shaft is locked by engaging the steering lock bar with the steering shaft.
The interlocking member 42 interlocking via the inner cable 41 is located at the first position shown in FIG. In this state, the engaging convex portion 32 of the restricting member 28 is inserted into the engaging concave portion 47 of the interlocking member 42, and interlocked with the inner surface of the first convex portion 29 of the restricting member 28. A predetermined gap is formed between the right side surface of the member 42.

In the state of FIG. 2, when the key hole 13 a of the key rotor 13 is inserted into the key and the key rotor 13 is rotated in the direction of the arrow A which is the operation position direction by the key, the first cam convex portion 16 in the cam member 14. When the first cam surface 19 pushes the second convex portion 30 of the regulating member 28, the regulating member 28 is moved in the direction of arrow C.
At this time, when the key rotor 13 is rotated to the “ACC” position which is one of the operating positions, the restricting member 28 is moved to the restriction releasing position shown in FIG.

In this state, the locking projection 32 of the restricting member 28 is in a position where it is retracted from the locking recess 47 of the interlocking member 42, and the interlocking member 42 is allowed to move in the arrow B direction and the opposite direction. Yes.
Further, as the key rotor 13 is rotated to the “ACC” position, which is one of the operating positions, the lock bar is disengaged from the steering shaft, and the steering shaft is unlocked.

  When the shift knob button of the shift lever is pressed in the state shown in FIG. 5 (the key rotor 13 is rotated to the “ON” position and the shift lever is in the parking position), the interlocking member 42 is moved via the inner cable 41. It is pulled in the direction of arrow B and moved to the second position shown in FIG.

  In a state where the interlocking member 42 has moved to the second position, the main portion of the interlocking member 42 is inserted between the first convex portion 29 and the locking convex portion 32 of the regulating member 28. The interlocking member 42 is in a state where movement of the restricting member 28 in the left-right direction (the direction of the arrow C and the direction opposite to the arrow C) is restricted (see FIG. 7).

6 and 7, when the key rotor 13 is to be rotated from the operating position to the “LOCK” position, the second cam surface 20 of the second cam convex portion 17 in the cam member 14 is moved to the regulating member 28. The second protrusion 30 is pressed to move the restricting member 28 in the direction opposite to the arrow C (the restricting position direction), but the restricting member 28 cannot be moved. It cannot be rotated to the position.
Therefore, when the shift lever is in a position other than the parking position, the key rotor 13 cannot be rotated to the “LOCK” position, so that the key is not accidentally pulled out and the steering shaft is locked. The

When the shift lever is shifted to the parking position in the state of FIG. 6 (the key rotor 13 is rotated to the operating position and the shift lever is in a position other than the parking position), the interlocking member 42 is in the direction opposite to the arrow B. To move to the first position shown in FIG.
In this state, the locking concave portion 47 of the interlocking member 42 is in a state corresponding to the locking convex portion 32 of the regulating member 28, and the movement of the regulating member 28 in the direction opposite to the arrow C is allowed. It has become.

When the key rotor 13 is rotated from the operating position toward the “LOCK” position in the state of FIG. 5, the second cam surface 20 of the second cam projection 17 pushes the second projection 30 of the regulating member 28. As a result, the regulating member 28 is moved in the direction opposite to the arrow C (regulated position direction).
Accordingly, when the shift knob button of the shift lever is released while the key rotor 13 is in the operating position, the key rotor 13 can be rotated to the “LOCK” position.

When the key rotor 13 is rotated to the “LOCK” position, as shown in FIG. 2, the restricting member 28 is moved to the restricting position and is held at the restricting position by the restricting portion 21, and the interlocking member 42 is moved to the first position. The movement from the first position to the second position is restricted.
Further, as the key rotor 13 is rotated to the “LOCK” position, the key can be removed from the key rotor 13 and the steering shaft is locked by the lock bar.

In this way, the restriction member 28 is moved from the restriction position shown in FIG. 2 to the restriction release position shown in FIGS. 5 and 6 on the first cam surface 19 of the cam member 14, and the restriction release position. The movement to the restricting position is performed on the second cam surface 20 of the cam member 14.
The key interlock device shown in FIG. 1 to FIG. 7 is given as an example. When the key interlock device is mechanically connected with a conventional shift lever and a key interlock cable, or an electrically interlocking member. The configuration is also applicable to the case of the present invention in which the movement of 42 is controlled.

  Next, the key interlock actuator of the present invention for driving the key interlock device will be described. 8 shows the entire key interlock actuator 1, FIG. 8 (a) is a plan view, and FIG. 8 (b) is a front view.

In FIG. 8, the key interlock actuator 1 includes a box-shaped actuator main body 60 and the control cable 40 led out from the actuator main body 60. The interlocking member 42 is provided on one end side of the control cable 40, and the other end side is inserted into the actuator body 60.
A case 68 constituting the outer shell of the actuator body 60 covers a base 61, a square frame-shaped middle case 62 disposed on the base 61, and an opening surface on the upper surface of the middle case 62. And a cover 63. The base 61, the middle case 62 and the cover 63 are made of synthetic resin.

FIG. 9 is a plan view of the actuator body 60 when the cover 63 and the middle case 62 are removed, and FIG. 10 shows the base 61. As shown in FIGS. 9 and 10, various components are mounted on the upper surface of the base 61. The left side of the base 61 (see FIG. 10A) has a plurality of positioning pieces 64 around it. A solenoid housing portion 65 formed by being surrounded by is provided.
A keep solenoid 66 is arranged in the solenoid housing portion 65, and the front and rear, right and left of the keep solenoid 66 are positioned by a plurality of surrounding positioning pieces 64. Further, the positioning of the keep solenoid 66 in the vertical direction is performed by the middle case 62.

The base 61 is formed with a cylindrical shaft support portion 67 whose bottom surface is closed. The shaft support portion 67 is supported by a shaft 70 shown in FIG. 14 to support the lever 120 (see FIG. 9). It has come to be. As shown in FIG. 14, a flange 71 is integrally provided at a substantially central portion of the shaft 70, and a shaft hole 121 of the lever 120 shown in FIG. 15 is inserted into a lower portion 72 below the flange 71. The lower end portion of the shaft 70 is inserted into the shaft support portion 67.
Further, a coiled spring 110 is arranged on the upper portion 73 above the flange portion 71 of the shaft 70 as shown in FIG.

As shown in FIG. 10A, a stopper accommodating portion for mounting rubber stoppers 74 (74a, 74b) (see FIG. 9) for preventing a collision sound with the base 61 when the lever 120 is rotated. 75 (75a, 75b) is formed on the base 61.
As shown in FIG. 9, the stopper 74 is formed in a substantially convex shape in cross section, and its projecting portion is a projecting portion 76 formed in a substantially corrugated shape, and when the side surface of the lever 120 abuts, The projection 76 receives the projection. By forming the projecting portion 76 in a substantially waveform, the impact itself when the side surface of the lever 120 hits and the impact sound due to this impact (with a greater elasticity than when it is simply a flat surface) (Sound) is eliminated.

11 shows the middle case 62, FIG. 11 (a) shows a plan view of the middle case 62, (b) shows a cutaway side view, (c) shows a bottom view, and (d) shows a cutaway front view. ing. A substantially U-shaped engagement piece 85 that engages with an engagement protrusion 77 (see FIG. 10C) provided on the upper side surface on both sides of the base 61 is provided on the lower side surface on both sides of the middle case 62. Yes.
At the lower portions of the front and rear side surfaces of the middle case 62, substantially triangular mounting portions 78 are respectively provided so as to project through the mounting holes 78 through which screws 79 (see FIG. 8A) are inserted. Has been. Then, the engaging piece 85 of the middle case 62 is engaged with the engaging protrusion 77 of the base 61, and the screw 79 is screwed into the screw hole 81 provided in the base 61 through the insertion hole 80. A case 62 is attached to the base 61.

  As shown in FIG. 10, a mounting piece 82 for arranging and fixing the key interlock actuator 1 in the instrument panel of the vehicle is integrally projected on the base 61, and the mounting piece 82 is used for bolt insertion. An insertion hole 83 is drilled.

  Further, as shown in FIG. 11, an intermediate plate 86 is integrally formed on a horizontal plane in the intermediate case 62, and a cylindrical shaft support portion 87 having an open lower surface is integrally formed on the lower surface of the intermediate plate 86. ing. An upper portion 73 of the shaft 70 is pivotally supported by the pivot support portion 87, and the shaft 70 is pivotally supported by the pivot support portion 87 of the middle case 62 and the pivot support portion 67 of the base 61.

FIG. 12 shows the cover 63, FIG. 12 (a) shows a plan view of the cover 63, and FIG. 12 (b) shows a cutaway side view. Each side of the flat cover 63 is integrally provided with an elastic locking piece 90 having a tip-shaped hook shape, and a locking portion 91 into which the locking piece 90 is inserted and locked is illustrated. 11 is formed at the upper part of each side surface of the middle case 62 shown in FIG.
The locking piece 90 of the cover 63 is inserted and locked to the locking portion 91 of the middle case 62, and a screw 93 (see FIG. 8A) is inserted into the hole 92 drilled in the central portion of the cover 63. The cover 63 is securely held and fixed to the middle case 62 by being screwed into the boss-like screw hole 94 of 62.

  FIG. 13 shows the keep solenoid 66, FIG. 13 (a) is a plan view of the keep solenoid 66, (b) is a side view, and (c) is a front view. The keep solenoid 66 includes a yoke 96 constituting an outer shell, a coil 97 disposed in the yoke 96 to form a magnetic circuit, and a side of the coil 97 and a part of the magnetic circuit. The built-in permanent magnet 98, a rod-like plunger 99 that slides the central portion of the permanent magnet 98 and the coil 97 to be attracted and returned, a plurality of lead wires 100 connected to the coil 97, and The connector 101 is connected to the tip of the lead wire 100 and receives power from the outside.

  The keep solenoid 66 has a permanent magnet 98 incorporated in a part of the magnetic circuit. Even if the plunger 99 is attracted only by passing an instantaneous current through the attractive force generating coil and the current is cut off, the permanent magnet The plunger 99 is attracted and held as it is by the magnetism of 98. Further, when an electric current is instantaneously passed through the holding force releasing coil, the plunger 99 returns.

When the keep solenoid 66 is disposed on the base 61, the lead wire 100 led out from the keep solenoid 66 is routed through the opening 102 (see FIG. 11A) of the middle plate 86 of the middle case 62. At the same time, the connector 101 at the tip is connected to a printed circuit board 103 (see FIG. 8A) on which a control circuit for controlling the keep solenoid 66 is mounted.
Further, as shown in FIG. 8, a connector 104 for connection to the outside is mounted on the printed circuit board 103, and this connector 104 has an opening 105 (see FIG. 11 (d)) opened on the side surface of the middle case 62. (See)) More exposed.

Next, the configuration of the control cable 40 will be described. FIG. 17A shows a front view of the control cable 40, and FIG. 17B shows a plan view of the main part. The outer casing 43 and the casing cap 44 are caulked with a cylindrical clamp member 50 at one end of the outer casing 43 constituting the control cable 40, and the casing cap 44 is connected with the clamp member 50. The outer casing 43 is integrally held and fixed.
A substantially cylindrical cap 51 is held and fixed on the other side of the outer casing 43 by a clamp member 50 in the same manner as described above. A groove 52 is provided around the distal end side of the cap 51, and is formed so as to have a smaller diameter from the groove 52 toward the distal end side.

An inner cable 41 is slidably inserted into the outer casing 43, and the metal interlocking member 42 is fixed to one end of the inner cable 41 as described above. A metal sphere 53 is fixed to the end side.
As shown in FIG. 18, a substantially arrow-shaped protrusion 54 is integrally provided on the tip surface of the metallic interlocking member 42, and a rubber stopper 55 shown in FIG. It is like that. That is, a recess 56 is formed inside the stopper 55, and the stopper 55 is attached to the distal end surface of the interlocking member 42 by fitting the protrusion 54 of the interlocking member 42 into the recess 56.

Next, the lever 120 pivotally supported by the shaft 70 on the base 61 of the actuator body 60 will be described. As shown in FIG. 15, a shaft hole 121 into which the upper portion 73 of the shaft 70 is inserted is formed in the base of the synthetic resin lever 120, and a cylindrical protrusion is formed on the upper surface in the vicinity of the shaft hole 121. 122 protrudes integrally.
As shown in FIG. 9, the lever 120 is pivotally supported by the shaft 70, and the spring 110 inserted through the upper portion 73 of the shaft 70 is disposed on the flange 71, and is formed in a substantially U shape formed at one end of the spring 110. The locking portion 111 is hooked and locked to the protrusion 122. Further, the other end 112 of the spring 110 is in contact with and locked to the side surface of the keep solenoid 66 and the lever 120 is biased rightward in FIG.

As shown in FIGS. 9 and 15, the bottom surface of the lever 120 is closed, and a circular and concave sphere housing portion 123 having an open top surface is formed. In the sphere housing portion 123, The sphere 53 of the inner cable 41 is accommodated.
The bottom surface of the spherical body accommodating portion 123 is formed in a hemispherical shape so as to follow the curved surface of the spherical body 53, and the concave spherical body accommodating portion 123 has a vertical slit 124 communicating with the upper surface of the lever 120 sideways. Is formed. Furthermore, a horizontal slit 125 that communicates from the spherical body accommodating portion 123 to the side of the lever 120 and the vertical slit 124 is formed.

FIG. 16 shows a view seen in the direction of arrow B in FIG. 15A. When the sphere 53 of the inner cable 41 is accommodated in the sphere accommodating portion 123 of the lever 120, it is performed as follows. That is, the sphere 53 is placed in the sphere accommodating portion 123 while the inner cable 41 is aligned with the vertical slit 124. At this time, the sphere 53 is inserted into the sphere accommodating portion 123 while the inner cable 41 is inserted below the vertical slit 124.
Next, as shown in FIG. 9, the inner cable 41 is led out from the actuator body 60 in the lateral direction by inserting the inner cable 41 from the vertical slit 124 into the horizontal slit 125.

As shown in FIG. 13, a slit 114 is formed at the tip of the plunger 99 of the keep solenoid 66, and a hole 115 is formed so as to pass through the slit 114 at a right angle. On the other hand, as shown in FIG. 15, on the base side of the lever 120, an elliptical connection hole 127 is formed in a connection portion 126 formed flat, and a plunger of a keep solenoid 66 is formed in the connection portion 126 of the lever 120. 99 slits 114 are loosely inserted.
Then, as shown in FIG. 9, the pin 116 is inserted into the hole 115 of the plunger 99 and the connection hole 127 of the lever 120 to connect the lever 120 and the plunger 99. The pin 116 and the hole 115 of the plunger 99 are press-fitted, and the pin 116 and the connecting hole 127 of the lever 120 are loosely fitted.

  Further, as shown in FIGS. 9 and 15, the left flat surface portion of the lever 120 is a contact surface 133 that contacts the stopper 74a, and the right flat surface portion of the lever 120 is contacted to the stopper 74b. The surface 134 is used.

Here, as shown in FIG. 9, the cap 51 of the control cable 40 is positioned and fixed to the side wall 129 of the base 61. That is, as shown in FIG. 10, a substantially U-shaped notch 130 having an open upper end surface is formed on the side wall 129 of the base 61, and the inner dimension of the notch 130 is set to the groove 52 of the cap 51. The groove 52 of the cap 51 can be inserted into the notch 130 by setting it slightly larger than the outer diameter.
Then, as shown in FIG. 11 (b), the tongue 131 suspended from the lower end of the middle case 62 is inserted into the upper portion of the notch 130, and the semicircular portion at the tip of the tongue 131 is the groove of the cap 51. 52 is inserted. In this way, the groove 52 of the cap 51 is sandwiched between the notch 130 of the base 61 and the tongue 131 of the middle case 62, and the cap 51 is positioned between the base 61 and the middle case 62 in the front / rear / right / left and up / down directions. Will be.

  Further, when the lever 120 is disposed on the base 61, as shown in FIGS. 9 and 10, the distal end portion 135 of the lever 120 protrudes from the opening 139 opened in the base 61. In this case, the operator puts his hand in the instrument panel and can operate the lever 120, that is, the actuator main body 60 can be operated manually.

FIG. 20 shows a state where the key interlock actuator 1 configured as described above is arranged in the instrument panel of the vehicle. As shown in FIGS. 20 and 21, a shift knob button 142 is provided on the side surface of the head of the shift lever 141, and a lock pin 143 interlocked with the shift knob button 142 is a detent plate 144 fixed to the vehicle body. The detent groove 145 is positioned so as to be freely disengaged.
Although the mechanism itself is well known and will not be described, the lock pin 143 is moved downward via the mechanism by pushing the shift knob button 142 in a state where the shift lever 141 is in the parking position. When 143 is disengaged from the detent groove 145, the shift lever 141 can be shifted from the parking position (P position) to another position.

  In the present invention, the detent plate 144 is provided with a P-position detection switch 146 that detects the operation state (whether it is pressed or not pressed) of the shift knob button 142 when the shift lever 141 is in the “P position”. FIG. 21A shows a state in which the shift lever 141 is in the “P position” and the shift knob button 142 is not pushed. Therefore, the lock pin 143 is positioned above and the detent groove 145 of the detent plate 144 is shown. Is located. As a result, the lock pin 143 biases the actuator 147 of the P position detection switch 146 upward, so that the P position detection switch 146 is turned off.

  Next, as shown in FIG. 21B, when the shift lever 141 is in the “P position” and the shift knob button 142 is pushed in, the lock pin 143 moves downward, so that the actuator 147 of the P position detection switch 146 is locked. When the pin 143 leaves, the actuator 147 returns, and the P position detection switch 146 is turned on.

  FIG. 22 is a block diagram showing electrical control related to the present invention, and the key interlock actuator 1 is provided with a control device 150 mounted on the printed circuit board 103. The control device 150 includes a power supply voltage + B from the battery, an ACC switch 35 (accessory switch), an ignition switch 15, the P position detection switch 146, and a P position switch provided in the ECU of the automatic transmission for detecting the P position of the shift lever 141. 148 and a signal from the brake switch 164 are input.

The control device 150 includes a signal processing circuit 151 that processes signals from the switches, a keep solenoid driving circuit 152 that drives the keep solenoid 66 by a signal from the signal processing circuit 151, and a coil of the keep solenoid 66. A voltage dividing circuit 153 constituting a series circuit with a temperature sensor 160 formed of a thermistor attached in the vicinity of the surface of 97, and a voltage detecting circuit 154 for detecting a voltage V1 across the resistor R constituting the voltage dividing circuit 153. And a cancel circuit for inactivating (stopping) the keep solenoid drive circuit 152 when a preset voltage value (threshold value) is exceeded (or when it is lowered: when a positive temperature coefficient thermistor is used), as will be described later. 155 or the like.
Here, when the P position detection switch 146 is in the “off” state (see FIG. 21A), the P position detection switch 146 is not connected to the ground (GND) as shown in FIG. The voltage Vcc is input to 151 as “H level”. When the P position detection switch 146 is “ON” (see FIG. 21B), the P position detection switch 146 is connected to the ground as “L level”. That is, here, the signal level of the P position detection switch 146 is set to GND (L level) and OFF to Vcc (H level).

  The keep solenoid 66 is driven by the signal processing circuit 151 and the keep solenoid drive circuit 152 of the control device 150 of the key interlock actuator 1 according to the state of the signals from the ignition switch 15, the P position detection switch 146 and the P position switch 148. By controlling, as shown in FIG. 8, the interlocking member 42 is pushed out (unlocked operation state), and the interlocking member 42 is pulled back (locked operation state).

  Here, the “unlocked operation state” corresponds to FIG. 5, in a state where the interlocking member 42 is positioned in the upper part of the interlocking member accommodating portion 23 in the drawing (the shift lever 141 is in the P position). ) And the restricting member 28 is moved to the left in the drawing, and the engagement between the interlocking member 42 and the restricting member 28 is released. In this “unlocked” state, the key can be rotated to the “LOCK” position.

  Further, the “locking operation state” corresponds to FIG. 6, in a state where the interlocking member 42 is positioned in the lower part of the interlocking member accommodating portion 23 in the drawing (a state where the shift lever 141 is in a position other than the P position). In addition, the regulating member 28 is moved to the left in the drawing, and the interlocking member accommodating portion 23 and the regulating member 28 are engaged. In the “locked” state, the movement of the restricting member 28 in the left-right direction is restricted by the interlocking member 42, and the key is prevented from rotating from the “ACC” position to the “LOCK” position.

  Next, the mechanical operation of the key interlock actuator 1 will be described. The key is inserted into the cylinder lock 12 and rotated from the “LOCK” position to the “ON” position via the “ACC” position, and further to the “START” position to start the engine. When the engine is started, the key returns to the “ON” position.

Here, as shown in FIG. 23, the condition of the “unlock” operation of the key interlock actuator 1 is when the ignition switch 15 is on, the shift lever 141 is in the parking position (P position), and the shift knob button 142 is not pressed. (P position detection switch 146 is off) (see FIG. 21A).
As shown in FIG. 24, the condition of the “lock” operation is as follows when the ignition switch 15 is on, the shift lever 141 is in the P position, and the shift knob button 142 is pressed (when the P position detection switch 146 is on). (See FIG. 21B).

  When the shift lever 141 is in the “P position” and the shift knob button 142 of the shift lever 141 is not pressed, the lock pin 143 is positioned at the top as shown in FIG. Switch 146 is off. In this initial state, the plunger 99 of the keep solenoid 66 of the actuator main body 60 is in a restored state (the plunger 99 protrudes and the lever 120 in FIG. 9 is shown by a solid line). It is in a state of being pushed out from the main body 60. Therefore, the interlocking member 42 is located at a position corresponding to FIG. 5 and is in an “unlocked” state (see FIG. 8).

  Next, as illustrated in FIG. 21B, when the shift lever 141 is in the “P position” and the driver presses the shift knob button 142 of the shift lever 141, the lock pin 143 is separated from the P position detection switch 146. Therefore, the P position detection switch 146 is turned on. In this state, as shown in FIG. 24 which is a functional block diagram in the signal processing circuit 151 of the control device 150 (see FIG. 22), the H level signals from the ignition switch 15 and the P position switch 148 are AND gates. By being input to G1, the output of the AND gate G1 becomes H level. Further, when an L level signal, which is an ON signal, is input to the AND gate G2 from the P position detection switch 146, the AND gate G2 outputs an L level signal.

  In response to the L level signal of the AND gate G2, the keep solenoid driving circuit 152 controls the energizing coil 97a for generating the attracting force of the keep solenoid 66 to be energized instantaneously, and the attracting force generating coil 97a is energized. As a result, the plunger 99 is sucked against the urging force of the spring 110. Even if the plunger 99 is attracted and the energization of the coil 97a is interrupted, the plunger 99 is retained in the attracted state by the retaining force of the permanent magnet 98.

  When the plunger 99 is sucked, the lever 120 is rotated about the shaft 70 to the position of the two-dot chain line shown in FIG. Accordingly, when the inner cable 41 is pulled, the interlocking member 42 is also pulled and a “lock” operation is performed (see FIG. 8). In this "locked" state, the interlocking member 42 is moved in the direction B in the figure within the interlocking member housing 23 as shown in FIG.

When the driver returns the shift lever 141 to the P position while pressing the shift knob button 142 and then releases the shift knob button 142, as shown in FIG. 21A, the lock pin 143 is raised and the P position detection switch 146 is moved. Turn off. When the P position detection switch 146 is turned off, as shown in FIG. 23, an H level signal as an off signal is input from the P position detection switch 146 to one input terminal of the AND gate G2 in the signal processing circuit 151. The output of the AND gate G2 becomes H level. By this H level signal, the keep solenoid drive circuit 152 controls the coil 97b for releasing the holding force of the keep solenoid 66 to be energized instantaneously, and the coil 97a for releasing the holding force is energized. The plunger 99 is returned and protruded.
Even when the energization to the coil 97b for releasing the holding force of the keep solenoid 66 is interrupted, the lever 120 is held at the position of the solid line shown in FIG. 9 by the urging force of the spring 110, and the inner cable 41 is protruded. Holding.

When the plunger 99 is projected, as shown in FIG. 9, the lever 120 rotates counterclockwise in the drawing via the shaft 70, and the inner cable 41 is pushed out by the rotation of the lever 120, The “unlock” operation is performed (see FIG. 8).
In this “unlocked” state, the key can be turned.

  Here, in the operation of the shift knob button 142 of the shift lever 141, the “unlock” operating state of the interlocking member 42 when the keep solenoid 66 of the key interlock actuator 1 is controlled to push the inner cable 41 rightward in FIG. In the “lock” operation state of the interlocking member 42 when the inner cable 41 is pulled back to the left, in the present invention, the inner cable 41 is not directly driven by the plunger 99 of the keep solenoid 66 but the lever 120 is interposed. Therefore, the stroke amount of the inner cable 41 can be increased.

  That is, as shown in FIG. 9, the plunger 99 of the keep solenoid 66 is rotatably connected to the base side of the lever 120 that is rotatable by the shaft 70 via the pin 116. The linear motion is converted into a rotational motion by the lever 120. Further, the rotary motion of the lever 120 is converted into the linear motion by the inner cable 41 by connecting the tip end of the lever 120 and the sphere 53 of the inner cable 41 so as to be rotatable. is doing.

In this manner, the lever 120 is interposed between the keep solenoid 66 and the inner cable 41, whereby the stroke amount of the inner cable 41 can be increased, and the enlargement of the keep solenoid 66 can be avoided. it can.
If the required stroke of the inner cable 41 is secured only by the linear momentum of the plunger 99 of the keep solenoid 66, the keep solenoid 66 will be enlarged, but in the present invention, the keep solenoid 66 is reduced in size by the lever 120. Has been achieved. As a result, the cost and size of the keep solenoid 66 can be reduced.

  Further, when the keep solenoid 66 is driven to perform the “lock” operation for pulling back the interlocking member 42, it is only necessary to energize the coil 97 a for generating the attractive force of the keep solenoid 66 instantaneously. Further, when the “unlocking” operation for projecting the interlocking member 42 is performed, it is only necessary to instantaneously energize the coil 97b for releasing the holding force of the keep solenoid 66. Therefore, the energization time to the coil 97 can be shortened, and the power saving time can be reduced. Electricity can be achieved.

Here, when the keep solenoid 66 is driven to perform an “unlocking” operation for projecting the interlocking member 42, the interlocking member 42 contacts the inner surface of the interlocking member accommodating portion 23 shown in FIG. Since the rubber stopper 55 is provided at the distal end portion, it is possible to reduce a collision sound between the interlocking member 42 and the inner surface of the interlocking member accommodating portion 23 during operation.
In particular, since the key interlock device is provided on the cylinder lock 12 side as shown in FIG. 1 and is located in the vicinity of the driver, no unnecessary collision noise is generated and the driver feels uncomfortable or uneasy. There is no feeling.

  Further, even when the lever 120 is rotated, a rubber stopper 74a is disposed corresponding to one contact surface 133 of the lever 120, and a stopper 74b is disposed corresponding to the other contact surface 134. Therefore, when the lever 120 collides with the stopper 74, the impact is absorbed and the impact sound is eliminated.

  Further, the controller 150 of the actuator main body 60 arranged in the instrument panel causes the output of the P position detection switch 146 when the ignition switch 15 is turned on, the shift lever 141 is positioned at the parking position, and the shift knob button 142 is pressed. Then, the interlocking member 42 is driven to perform a “lock” operation, and the P position detection switch 146 when the ignition switch 15 is on and the shift lever 141 is in the parking position and the shift knob button 142 is not pressed is used. The interlock member 42 can be driven by an output to perform an “unlock” operation, and a “lock” operation and an “unlock” operation can be performed smoothly.

Here, in the present invention, as shown in FIG. 22, the temperature of the coil 97 of the keep solenoid 66 is constantly monitored by a temperature sensor 160 made of a thermistor, and when the temperature of the coil 97 is 90 ° C. or more, for example. The keep solenoid drive circuit 152 is deactivated by the cancel circuit 155 to cut off the energization of the keep solenoid 66 to the coil 97 and prevent the coil 97 from fusing.
A stabilized power source + V formed in the control device 150 is applied to the temperature sensor 160, and a voltage V 1 at a connection point between the temperature sensor 160 and the resistor R of the voltage dividing circuit 153 is applied by the voltage detection circuit 154. It is constantly monitored.

When a thermistor having a negative temperature characteristic is used as the temperature sensor 160, the temperature of the thermistor also rises as the temperature of the coil 97 of the keep solenoid 66 rises, whereby the thermistor (temperature sensor 160) is increased. ) The resistance value also decreases. When the resistance value of the thermistor decreases, the voltage V1 across the resistor R of the voltage dividing circuit 153 increases. When the temperature of the coil 97 exceeds the voltage value V1 corresponding to 90 ° C., a signal is sent from the voltage detection circuit 154 to the cancel circuit 155. Send.
In response to the cancel signal from the cancel circuit 155, the keep solenoid drive circuit 152 is stopped, and the energization to the coil 97 of the keep solenoid 66 is stopped even when a signal is input from the P position detection switch 146 or the like.

Next, an electrical operation will be described using a timing chart. FIG. 25 shows a timing chart when the key is turned while the shift knob button 142 of the shift lever 141 is being pressed in the “lock operation” of the key interlock actuator 1.
Here, the lock operation permission condition shown in FIG. 25A is that the ignition switch 15 is on and the temperature sensor 160 is in a state where the temperature of the coil 97 of the keep solenoid 66 does not exceed 90 ° C. (off state). It also refers to the case where the battery voltage of the vehicle is a voltage value greater than or equal to a predetermined value.

In FIG. 25, (b) to (f) show input signals input to the control device 150, and (b) shows the "ON" position of the ignition switch 15 from the "OFF" position to the "ACC" position of the key. (C) shows the state of the accessory (ACC), and (d) shows the state of the ignition switch 15.
(E) shows the state of the P position detection switch 146 depending on whether or not the shift knob button 142 of the shift lever 141 is pressed, and (f) shows the state of the thermistor (temperature sensor 160). Indicates a case where the temperature of the coil 97 of the keep solenoid 66 exceeds 90 ° C., and “OFF” means a state where the temperature is not 90 ° C.

25 (g) to (i) show the state of key interlock, (g) shows the lock output by the operation of the keep solenoid 66, (h) shows the unlock output, and (i) shows the key interlock. The unlocked state (operating state of the interlocking member 42 corresponding to FIG. 5) by lock and the operating state of the lock (operating state of the interlocking member 42 corresponding to FIG. 6) are shown.
(J) shows the output of a solenoid 165 (see FIG. 22) that controls the lock / unlock state of the shift lever 141 itself depending on the state of the brake switch 164, etc., and (k) shows the shift lock state of the shift lever 141. The shift lever 141 is locked while the solenoid 165 is stopped.

Even when the shift knob button 142 of the shift lever 141 is pressed and the P position detection switch 146 is turned on at time t1 in FIG. 25, the lock operation permission condition is not satisfied as shown in FIG. It is not accepted as a signal for Even when the accessory switch 35 is turned on at time t2, the lock operation is not accepted because the ignition switch 15 is not turned on.
The ignition switch 15 is turned on (see (d)) at time t3 when the key is turned to the on position while the shift knob button 142 is pressed (see (b)). The operation permission condition is satisfied. As a result, as shown in (g) at time t3, the coil 97a of the keep solenoid 66 is energized instantaneously for the time T1, and the locking operation is performed.

  At time t4 after the elapse of time T1, the lock output is stopped, and the key interlock device is operated from the “unlocked” state to the “locked” state as shown in (i).

FIG. 26 shows a timing chart of the lock operation when the shift knob button 142 is pressed after turning the key. At time t1 when the accessory switch 35 is turned on as shown in (c) by rotating the key, the “unlocked” state shown in FIG. 5 is reached (see FIG. 23 and FIG. 26 (h)).
Next, when the shift knob button 142 is pressed at time t2 and the P position detection switch 146 is turned on (see (e)), the coil 97a of the keep solenoid 66 is energized instantaneously for the time T1, and the lock operation is performed. It is.
At time t3 after the elapse of time T1, the lock output is stopped and the key interlock device is operated from the “unlocked” state to the “locked” state as shown in (i).

FIG. 27 shows a timing chart when the key is turned in the “unlock” operation of the key interlock actuator 1 while the shift knob button 142 of the shift lever 141 is released. The unlocking operation permission condition here is when the accessory switch 35 is on, the thermistor (temperature sensor 160) is off, and the battery voltage is equal to or higher than a predetermined value.
The reception of “special unlock” in FIG. 27 will be described later. The condition for this special unlocking operation is the state where the “ACC” position (accessory switch 35 is on), the ignition switch 15 is off, and the shift lever 141 is released from the shift knob button 142 at the parking position (P position detection). Switch 146 is off).

  In this unlocking operation, since the shift knob button 142 remains released, the P-position detection switch 146 is in the off state as shown in FIG. 21E (see FIG. 21A). Then, the key is turned to the “ON” position, the accessory switch 35 is turned on at time t1, and a special unlocking operation described later is accepted. At this time, since the accessory switch 35 is on as one of the conditions for the special unlocking operation, the keep solenoid 66 is unlocked in the direction in which the interlocking member 42 protrudes by the keep solenoid driving circuit 152 of the control device 150. (See (h)). Further, energization of the coil 97b of the keep solenoid 66 is started from time t1.

  When the key is further turned and the ignition switch 15 is turned on at time t2, the unlock is accepted at time t2, and the coil 97b of the keep solenoid 66 is energized instantaneously for the time T1 from time t2 to unlock. Is done. At time t3 after the elapse of time T1, the unlock output is stopped and the unlocked state continues as shown in (i).

FIG. 28 shows a timing chart when the shift knob button 142 is released after turning the key while pressing the shift knob button 142 of the shift lever 141 in the unlocking operation.
By pressing the shift knob button 142 of the shift lever 141 at time t1 shown in (e), the P position detection switch 146 is turned on (see FIG. 21B). While the shift knob button 142 is being pressed, the key is rotated as shown in (b), and the lock operation condition is satisfied at the time t2 when the ignition switch 15 is turned on (see FIG. 24), so that the lock is accepted. Then, as shown in (g), the coil 97a of the keep solenoid 66 is energized for a time T1 from time t2 to time t3.

At time t3 after the elapse of time T1, the key interlock device shifts from the unlocked state to the locked state (see (i)). In this state, when the shift knob button 142 is released at time t4, the P position detection switch 146 is turned off (see FIG. 21A), and the unlocking condition is satisfied (see FIG. 23).
By receiving the unlock at time t4, as shown in (h), the coil 97b of keep solenoid 66 is energized only for time T1 from time t4 to time t5, and then stopped, and the key interlock device is Then, the lock operation state shifts to the unlock operation state.

Next, the “special unlock” operation will be described with reference to FIG. This “special unlock” refers to a time when the driver performs a mischievous operation that would not normally be performed. When the key is turned to the “ACC” position while the shift knob button 142 is pressed, the P-position detection switch 146 is on, so that the locking projection 32 pushes the interlocking member 42 as it is with the force to turn the key. Force (see FIG. 6), and the interlocking member 42 cannot move with the force of the keep solenoid 66.
Since there is one instruction pulse for the unlocking operation of the keep solenoid 66, even if the interlocking member 42 cannot move at the time of the instruction pulse, the instruction is not repeatedly output. Therefore, when such an operation is performed by the driver, the vehicle is not unlocked although an unlock instruction is issued.

In FIG. 29, after the key is turned from the “ON” position to the “ACC” position as shown in (a) while the shift knob button 142 of the shift lever 141 is being pressed, the time t1 is set as shown in (e). When the shift knob button 142 is released, the P-position detection switch 146 is turned off from on (see FIG. 21A).
When the P position detection switch 146 is turned off at time t1, the unlocking operation condition is satisfied (see FIG. 24), and the coil 97b of the keep solenoid 66 is energized for the time T1 from time t1 to time t2. Then, an unlocking operation is attempted (see (i)). However, since the interlocking member 42 is in a state where it cannot move, it is not unlocked and the locked state continues (see (j)). Note that “force (from power)” shown in (g) indicates a force for turning the key in the “OFF” position direction.

Next, in FIG. 29, when the key is returned from the “ACC” position to the “ON” position after time t2, the ignition switch 15 is turned on at time t3, and the P position detection switch 146 is turned off at time t3. Therefore, the unlocking operation condition is satisfied (see FIG. 23).
Then, the coil 97b of the keep solenoid 66 is energized for a time T1 from time t3 to time t4, and the unlocking operation is performed. Therefore, as shown in (j), the key interlock device changes from the locked state to the unlocked operation state.

FIG. 30 shows a timing chart when the shift knob button 142 of the shift lever 141 is continuously operated. As shown in (e), when the shift knob button 142 is pressed, released, or continuously operated, the P position detection switch 146 is turned on or off in accordance with the operation. In this case, currents instantaneously flow through the coils 97 of the keep solenoid 66 (the attraction force generating coil 97a and the holding force releasing coil 97b), respectively, as shown in (g) and (h). The operation and unlocking operation are performed alternately. Then, as shown in (i), the key interlock device shifts alternately between the unlock operation state and the lock operation state.
In FIG. 30, even when a current is continuously passed through the coil 97 of the keep solenoid 66, the temperature sensor 160 (thermistor) does not detect a temperature of 90 ° C. or higher, and the thermistor is in the OFF state.

  At time t1, when the shift knob button 142 is released, the P position detection switch 146 is turned off and the unlocking operation condition is established, and the coil 97b of the keep solenoid 66 is energized only for time T1 from time t1 to time t2. Then, the unlock operation is performed (see (h)), and the key interlock device enters the unlock operation state after time t2.

  Next, by continuously operating the shift knob button 142, the temperature of the coil 97 of the keep solenoid 66 becomes 90 ° C. or higher, and the temperature sensor 160 detects the temperature of 90 ° C. or higher (the thermistor is turned on). ) Explain the case. When the temperature of the coil 97 reaches 90 ° C. or higher, the voltage V1 across the resistor R of the voltage dividing circuit 153 of the control device 150 shown in FIG. 22 exceeds the threshold, and the voltage V1 exceeding this threshold is detected by the voltage detection circuit. When the signal is detected by 154, a signal is sent from the voltage detection circuit 154 to the cancel circuit 155. Then, a cancel signal is sent from the cancel circuit 155 to the keep solenoid drive circuit 152 to deactivate the keep solenoid drive circuit 152 and cut off the energization of the coil 97 of the keep solenoid 66.

  FIG. 31 shows a timing chart in such a case, and FIG. 32 shows a flowchart. In FIG. 32, if the operating condition is established in step S1 and the temperature of the coil 97 of the keep solenoid 66 does not become 90 ° C. or higher in step S2 even if the shift knob button 142 is continuously operated, the process proceeds to step S3. In step S3, as described with reference to FIGS. 25 to 30, the key interlock actuator 1 performs a normal operation.

As shown in FIG. 31 (e), when the shift knob button 142 is continuously pressed or released, the P position detection switch 146 is repeatedly turned on and off to accept lock and unlock. , (G) As shown in (h), lock operation and unlock operation are performed. Along with this, the key interlock device also shifts alternately between the lock operation state and the unlock operation state.
As the shift knob button 142 is continuously operated, the coil 97 of the keep solenoid 66 is energized. When the temperature of the coil 97 rises to 90 ° C. or more due to the continuous energization, the thermistor is turned on as shown in FIG. Turn on.

That is, when the thermistor which is the temperature sensor 160 is turned on, in FIG. 22, the resistance value of the thermistor decreases and the voltage across the resistor R of the voltage dividing circuit 153 increases. When the voltage detection circuit 154 that constantly monitors the increased voltage value detects a voltage value higher than a predetermined value (a voltage value corresponding to a temperature of the coil 97 of 90 ° C. or higher), the voltage detection circuit 154 cancels the cancellation circuit 155. In addition, a cancel signal is output from the cancel circuit 155 to the keep solenoid drive circuit 152.
As a result, the keep solenoid drive circuit 152 becomes inoperative, and energization of the coil 97 of the keep solenoid 66 is stopped. That is, as shown in step S4, the operation of the key interlock actuator 1 is stopped.

Next, the process proceeds from step S4 to step S5, and the signal from the P position detection switch 146 is not accepted until the temperature sensor 160 drops to 85 ° C. or lower. That is, the voltage detection circuit 154 outputs a cancel signal to the keep solenoid drive circuit 152 until the voltage V1 across the resistor R decreases to a voltage value corresponding to 85 ° C. of the coil 97 of the keep solenoid 66. Thus, the operation of the keep solenoid drive circuit 152 is stopped.
When the temperature of the coil 97 becomes 85 ° C. or lower and the voltage V1 across the resistor R becomes lower than a predetermined voltage, the cancel signal from the cancel circuit 155 to the keep solenoid drive circuit 152 disappears, and the keep solenoid drive circuit 152 Return to normal operation. That is, as shown in step S6, the key interlock actuator 1 performs a return operation. Here, the return operation shown in step S6 refers to an operation in which the operation corresponding to the input signal state is performed only once when the temperature sensor 160 becomes 85 ° C. or lower.

  In the example of FIG. 31, the shift knob button 142 is pressed at time t1 (when the thermistor is off) when the temperature detected by the temperature sensor 160 of the coil 97 of the keep solenoid 66 is 85 ° C. or lower. The P position detection switch 146 is on. Therefore, the lock is re-accepted at time t1 when the system is restored, and the lock operation is performed only for time T1 from time t1 to time t2.

As described above, in the present invention, when the coil 97 of the keep solenoid 66 reaches a predetermined temperature or higher (90 ° C. or higher in the present embodiment), the power supply to the coil 97 is cut off. It is possible to prevent the attached fuse (not shown) from being melted and to prevent the function from being stopped.
In addition, when the current to the coil 97 is stopped at a temperature that does not cause the coil 97 or the like to melt and the temperature of the coil 97 of the keep solenoid 66 decreases, the coil 97 returns to normal and may give the driver a sense of discomfort or anxiety. Absent.

  Furthermore, since the temperature detection circuit for detecting the temperature of the coil 97 of the keep solenoid 66 is composed of a temperature sensor 160 made of a thermistor and a voltage dividing circuit 153 made of a resistor R, a simple hardware circuit is used. A temperature detection circuit can be configured, and the cost can be reduced in terms of circuit.

FIG. 33 is a timing chart of the shift lock operation of the shift lever 141. As a shift lock operation permission condition, the P position switch 148 when the shift lever 141 is in the parking position is on and the brake pedal is depressed. It is assumed that the brake switch 164 is on and the voltage of the battery is a predetermined value or more.
When the ignition switch 15 is on and the shift lever 141 is in the parking position and the brake is depressed, the brake switch 164 is turned on, and this on signal is sent to the solenoid 165 via the signal processing circuit 151. For example, the shift lever 141 is unlocked by returning. Further, the solenoid 165 is driven so that the shift lever 141 is locked when the unlocking condition is not satisfied.

  The shift lever 141 itself is locked or unlocked by driving the solenoid 165 by the brake switch 164 regardless of the lock operation or unlock operation by the key interlock actuator 1.

Note that the voltage detection circuit 154 shown in FIG. 22 can be constituted by, for example, a microcomputer, a comparator, an inverter with a Schmitt circuit, or the like. When the voltage detection circuit 154 is configured by a microcomputer, high-precision and complicated control can be performed.
The accuracy is in order of the microcomputer, the comparator, and the inverter with the Schmitt circuit.

It is a disassembled perspective view of the key interlock apparatus in embodiment of this invention. It is a principal part top view which shows the state in which the key rotor in embodiment of this invention is located in a "LOCK" position, and a shift lever is in a parking position, remove | excluding a cover. It is sectional drawing which follows the XX line in FIG. 2 in embodiment of this invention. It is a principal part top view of the cam member in embodiment of this invention. FIG. 6 is a plan view of the main part in a state where the shift lever in the embodiment of the present invention is in the parking position and the key rotor is rotated to the “ACC” position. It is a principal part top view in the state in which the key rotor in embodiment of this invention is rotated to the "ACC" position, and a shift lever exists in positions other than a parking position. It is sectional drawing which follows the YY line in FIG. 6 in embodiment of this invention. (A) (b) is the top view and front view of a key interlock actuator in embodiment of this invention. It is a top view of the actuator main body at the time of removing the cover and middle case in embodiment of this invention. (A)-(c) is the top view of the base of the actuator main body in embodiment of this invention, a side view, and a front view. (A)-(d) is a top view of a middle case in an embodiment of the invention, a fracture side view, a bottom view, and a fracture front view. (A) (b) It is the top view and fracture | rupture side view of the cover in embodiment of this invention. (A)-(c) is the top view of the keep solenoid in embodiment of this invention, a side view, and a front view. (A) and (b) are the side view and front view of a shaft in an embodiment of the present invention. (A) is a top view of the lever in embodiment of this invention, (b) is AA sectional drawing in Fig.15 (a). It is the figure seen in the B direction in Fig.15 (a) in embodiment of this invention. (A) (b) is the front view and principal part top view of a control cable in embodiment of this invention. (A)-(c) is the enlarged plan view of the interlocking member of the control cable in embodiment of this invention, an enlarged front view, and an enlarged side view. (A)-(c) is the expansion fracture | rupture top view, the expansion side view, and the expansion front view of the stopper with which the front-end | tip of the interlocking member in embodiment of this invention is mounted | worn. It is a figure which shows the state which has arrange | positioned the key interlock actuator in the instrument panel in embodiment of this invention. (A) (b) is explanatory drawing which shows operation | movement of the P position detection switch by operation of the shift knob button in embodiment of this invention. It is a block circuit diagram which shows the electrical control relationship in embodiment of this invention. It is a functional circuit diagram which shows the lock operation state in embodiment of this invention. It is a functional circuit diagram which shows the unlocking operation state in embodiment of this invention. It is a figure which shows the timing chart of the lock action at the time of turning a key, pressing the shift knob button in embodiment of this invention. It is a figure which shows the timing chart of the lock action at the time of pushing a shift knob button after turning the key in embodiment of this invention. It is a figure which shows the timing chart of the unlocking | release operation | movement when a key is turned, releasing the shift knob button in embodiment of this invention. It is a figure which shows the timing chart of the unlocking | release operation | movement at the time of releasing a shift knob button, after turning a key, pressing the shift knob button in embodiment of this invention. It is a figure which shows the timing chart of the unlocking | release operation | movement when releasing the shift knob button, turning the key at the time of the special unlocking operation in embodiment of this invention. It is a figure which shows the timing chart in the case of continuous operation | movement at the time of continuous operation of the shift knob button in embodiment of this invention. It is a figure which shows the timing chart in the case of continuous operation | movement at the time of continuous operation of the shift knob button in embodiment of this invention. It is a figure which shows the flowchart in the case of the continuous action | operation at the time of continuous operation of the shift knob button in embodiment of this invention. It is a figure which shows the timing chart in the case of the shift lock action | operation in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key interlock actuator 28 Control member 42 Interlocking member 66 Keep solenoid 97 Coil 141 Shift lever 150 Control apparatus 153 Voltage dividing circuit 160 Temperature sensor R Resistance

Claims (3)

An "unlocked" state in which the key can be rotated when the shift lever (141) is positioned at the parking position and the interlocking member (42) is movable with respect to the regulating member (28);
The shift lever (141) is located at a position other than the parking position, the restricting member (28) is restricted from moving relative to the interlocking member (42), and the interlocking member (42) is in a movable “locked” state. A key interlock device having the relationship of
As a drive source for driving the interlocking member (42), a keep solenoid (66) capable of being driven by instantaneous energization ,
Temperature detecting means for detecting the temperature of the keep solenoid (66);
When the detected temperature of the keep solenoid (66) by the temperature detecting means becomes a predetermined temperature or higher when the lock operation and the unlock operation are continuously operated, the energization to the keep solenoid (66) is cut off. And a controller for controlling the key interlock actuator. The temperature detecting means is composed of a temperature sensor (160) made of a thermistor and a voltage dividing circuit (153) made of a resistor (R) connected in series with the temperature sensor (160). The power supply to the keep solenoid (66) is cut off when the voltage across the resistor (R) exceeds a predetermined threshold as a result of a change in resistance value of the thermistor. 2. A control device for a key interlock actuator according to 1.   2. The apparatus according to claim 1, further comprising means for returning to normal control in accordance with a control signal at that time when the temperature detected by the temperature detecting means is equal to or lower than a predetermined temperature. Item 3. A key interlock actuator control device according to Item 2.

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