JP3535890B2 - Vehicle locking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for a vehicle which can be used for a key interlock mechanism of an automobile. 2. Description of the Related Art For example, in a shift lock device provided in a motor vehicle, a key interlock is required to ensure that an operation of shifting an automatic transmission to a parking position is performed when an ignition key is removed. An additional locking mechanism has been used. FIG. 5 shows a configuration example of a main part of such a key interlock mechanism. That is, in FIG. 5, a shaft 2 rotatably supported in a body 1 is coaxially connected to a key rotor (not shown) for an ignition switch. Each operation position (lock position, accessory position, ON position and start position)
It turns in conjunction with the turning operation. A stopper projection 2a is integrally formed on the outer periphery of the shaft 2 so as to protrude therefrom. A stepped through hole 1a formed in the body 1
The stopper pin 3 disposed on the
The operation position (the position shown in FIG. 5B) protruding into the rotation locus of FIG. 5A and the operation release position (FIG.
(Position (a)). When the stopper pin 3 is in the operating position, the rotation of the shaft 2 and, consequently, the rotation of the ignition key to the lock position are restricted by the contact of the stopper projection 2a with the stopper pin. The return compression coil spring 4 is provided so as to bias the stopper pin 3 toward the operation release position (upward). An electromagnetic solenoid 5 fixed to the body 1
Is a plunger 6 having a pin 6a that comes into contact with the stopper pin 3 from above, a core 7, an exciting coil 8 for attracting the plunger 6 toward the core 7 (downward), a damper rubber 9, and a stopper pin It comprises a compression coil spring 10 for urging in three directions (downward).
In this case, the spring force of the return compression coil spring 4 is a value larger than the sum of the spring force of the compression coil spring 10 of the electromagnetic solenoid 6 and the weight of the coil spring 10, the plunger 6, and the stopper pin 3. It is set to be. Therefore, when the operation of the electromagnetic solenoid 5 is stopped (when the exciting coil 8 is cut off), the spring force of the return compression coil spring 4 causes the stopper pin 3 and the plunger 6 to move.
Is held in the state shown in FIG. 5A in which the ignition key is moved upward, whereby the ignition key is allowed to rotate to the lock position. Also, from this state, the exciting coil 8
And the electromagnetic solenoid 5 is operated,
The plunger 6 is moved downward against the spring force of the return compression coil spring 4, and the plunger 6 and the stopper pin 3 are held in the state shown in FIG. 5B. The rotation of the ignition key to the locked position is restricted by the contact between the projection 2a and the stopper pin 3. In the above-mentioned conventional structure, the stopper pin 3 is moved from the operation release position in FIG. 5A to the position shown in FIG. 5B because the return compression coil spring 4 is provided. When moving to the operating position of the electromagnetic solenoid 5
Must perform work against the spring force of the return compression coil spring 4 (actually, the force obtained by subtracting the spring force of the compression coil spring 10 and the weight of the plunger 6 and the like). Therefore, there is a problem that the power generated by the electromagnetic solenoid 5 needs to be relatively large, and the size thereof is increased. In this case, it is possible to reduce the size of the electromagnetic solenoid 5 while maintaining the generated force. However, in this configuration, the heat generated by the increase in the drive current increases, which may adversely affect the life. come. Moreover, the electromagnetic solenoid 5
During the operation and when the operation is stopped, a collision sound between the plunger 6 and the damper rubber 9 and a collision sound when the plunger 6 is returned by the return compression coil spring 4 are generated, which causes an increase in noise. There were also problems. Further, in order to prevent the above-mentioned adverse effects due to heat generation, conventionally, for example, Japanese Utility Model Laid-Open Publication No. 1-1650.
As disclosed in Japanese Unexamined Patent Publication No. 4 (1994), after the electromagnetic solenoid is driven, a control circuit device configured to hold the operating state of the electromagnetic solenoid with the drive voltage lowered is provided to suppress the amount of heat generation. However, in this case, it is necessary to separately provide a control circuit device having a complicated circuit configuration, resulting in a new problem that the cost is increased. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the size of an electromagnetic solenoid required for a lock function of prohibiting rotation of a rotor member to a specific position. Can be realized without increasing the cost and soaring of the cost, noise can be suppressed, and even if there is an assembling error between the stopper member and the arm member which are parts for realizing the lock function. Another object of the present invention is to provide a vehicular lock device that has an effect of reliably exerting the lock function. According to the present invention, there is provided a vehicle for selectively prohibiting a rotation operation of a rotor member rotated by an operation member to a specific position. An arm member provided integrally with the rotor member, an operation position in which a rotation restricting surface provided at a distal end portion is positioned to intersect with a rotation locus of the arm member, and the rotation restriction. A stopper member provided to be reciprocally rotatable between an operation release position in which the surface is retracted from the rotation locus, an urging means for constantly urging the stopper member in the operation position direction, and an energized state An electromagnetic solenoid that holds the stopper member at the operating position, and an electromagnetic solenoid that is provided on the stopper member and contacts the arm member before the rotation regulating surface when the arm member is rotated in the stopper member direction. A cam member reciprocally displaceable between a contacting first position and a second position retracted from the rotation regulating surface thereof; and a spring means for urging the cam member in the first position direction. Above, the cam member rotates the stopper member in the direction of the operation release position when the rotor member is rotated in the direction of the specific position while the cam member is in the first position. Forming a cam surface and said spring means;
When the rotor member is rotated in the direction of the specific position while the electromagnetic solenoid is turned off, the cam member is held at the first position against the urging force of the urging means, and When the rotor member is rotated in the direction of the specific position in the energized state of the electromagnetic solenoid, the cam member is allowed to move in the second position direction and is deformed. Are formed in an arc shape centered on the rotation support shaft of the stopper member. The urging means always pushes the stopper member in the direction of the operating position, that is, in the direction of the operating position in which the rotation restricting surface of the distal end of the stopper member intersects with the rotation locus of the arm member. Energize. In such a state, when the rotor member is rotated in the direction of the specific position, the arm member provided integrally with the rotor member is rotated, and the arm member is provided on the cam provided on the stopper member. Since it comes into contact with the cam surface of the member, the force by the urging force of the urging means is applied to the cam member. At this time, if the electromagnetic solenoid is disconnected, the spring means holds the cam member at the first position against the urging force of the urging means. When the rotation operation of the rotor member in the direction of the specific position is continued while the cam member is in the first position, the cam surface retracts the stopper member from the rotation locus of the arm member. Since the rotor member is rotated in the direction of the operation release position, the rotor member is rotated to the specific position. On the other hand, when the electromagnetic solenoid is energized, the spring means is deformed by allowing the cam member to move in the second position by the force acting on the cam member. Become. When the cam member is moved to the second position in response, the cam member is retracted from the rotation restricting surface of the stopper member.
The rotation restricting surface comes into contact with the arm member to restrict the rotation of the arm member, whereby the rotation operation of the rotor member to a specific position is prohibited. In this case, since the electromagnetic solenoid only needs to generate a relatively small force for holding the stopper member in the operating position, it is possible to reduce the size and to supply a large driving current. As a result, the amount of generated heat can be suppressed, and the amount of generated heat can be suppressed. As a result, there is no need to separately provide a control circuit device having a complicated circuit configuration as in the related art, which may increase costs. Disappears. Moreover, the movement of the stopper member to the operating position is performed by the biasing means, and the movement of the stopper member to the operation releasing position is performed by an external operating force acting on the cam surface through the rotor member. The noise generated by the movement can be reduced. Further, when the electromagnetic solenoid is energized, the function of the cam surface is invalidated, and a lock function of restricting the rotation of the arm member by the rotation restricting surface operates. Since the rotation restricting surface located at the distal end of the stopper member is formed in an arc shape centering on the rotation support shaft of the stopper member, it acts on the stopper member through the rotation restricting surface from the arm member. The force to be applied always acts toward the center of rotation of the stopper member, so that there is no possibility of generating an unnecessary moment force for rotating the stopper member. Therefore, even when there is an assembling error between the stopper member and the arm member, the stopper member is prevented from being inadvertently rotated by the force from the arm member, and the locking function described above is reliably exhibited. You will get. An embodiment in which the present invention is applied to a key interlock mechanism for a vehicle will be described below with reference to FIGS. In FIG. 1, a shaft 12 rotatably supported in a body 11 is made of, for example, zinc die-cast, and is coaxially connected to a key rotor for an ignition switch (not shown) (corresponding to a rotor member in the present invention). The ignition key, which corresponds to the operation member in the present invention, is rotated in conjunction with the rotation of the ignition key to each of the well-known operation positions (lock position, accessory position, ON position, and start position). Has become. A stopper projection 13 corresponding to an arm member according to the present invention is integrally formed on the outer periphery of the shaft 12 to protrude therefrom.
The stopper projection 13 is at the position shown in FIG. 1A with the ignition key in the accessory position, and when the ignition key is rotated from this state in the lock position direction (arrow W direction). Figure 1
It is configured to be rotated to the lock position shown in FIG. Note that the lock position corresponds to a specific position of the rotor member according to the present invention. Also, the body 11
A space 11a for securing the rotation locus of the stopper projection 13 is formed. The body 11 has a space 11a.
A through-hole 11b communicating with the swing lever 1 is formed in the through-hole 11b.
4 (corresponding to a stopper member in the present invention) is provided.
The swing lever 14 rotates through a support shaft 15 (corresponding to a rotation support shaft according to the present invention) provided in a penetrating manner on the base end side, and has a rotation restriction at the distal end thereof. Surface 14a
As shown in FIG. 2, is formed in an arc shape (curvature R) around the support shaft 15. The operating position of the rocking lever 14 is such that its rotation restricting surface 14a intersects the rotation locus of the stopper projection 13 (the position shown in FIG. 1A).
And an operation release position retracted from the rotation locus (FIG. 1).
(Position (b)). At the base of the swing lever 14, a torsion coil spring 16 for urging the swing lever 14 upward is provided. The spring force of the torsion coil spring 16 is controlled by an electromagnetic solenoid 17 to be described later. Compression coil spring 1
8 (corresponding to the urging means in the present invention) and the weight of the plunger 19 of the electromagnetic solenoid 17, the compression coil spring 18 and the swing lever 14. Is set to In this case, the electromagnetic solenoid 17 is arranged such that the pin 19a of the plunger 19 is brought into contact with the swing lever 14 from above, and the spring force of the compression coil spring 18 pushes the plunger 19 downward. Therefore, the swing lever 14 is always urged toward the lower operating position (the position in FIG. 1A) by the spring force of the compression coil spring 18 or the like. . The swing lever 14 has a slider housing hole 14b opened at its tip end surface (rotation restricting surface 14a).
(See FIGS. 2 and 3), and a slider 20 (corresponding to a cam member in the present invention) made of a material having high self-lubricating property, for example, polyacetal resin, is formed in the slider housing hole 14b. The moving lever 14 is housed so as to be able to reciprocate in the axial direction. In this case, when the stopper projection 13 is rotated in the direction of the slider 20, the front end surface of the slider 20 comes into contact with the front end of the stopper projection 13 before the rotation restricting surface 14a. First position (position in FIG. 1)
And a second position (not shown) retreated from the rotation restricting surface 14a. When the slider 20 is in the first position, the tip end surface (stopper projection 1)
3) is inclined at an angle θ (see FIG. 1A) smaller than a plane perpendicular to the rotation direction of the stopper projection 13, and the slider 20 Is designed to function as a cam surface 20a. As a result, assuming that the slider 20 is held at the first position, the ignition key is rotated from the accessory position to the lock position in the state where the electromagnetic solenoid 17 is turned off. Accordingly, when the shaft 12 is rotated in the direction of the arrow W, the swing lever 14 is pushed upward by the cam surface 20a, and when the rotation operation of the ignition key as described above is continued. In this case, the swing lever 14 is displaced toward the operation release position against the weight of the compression coil spring 18 and the plunger 19 and the like. The slider 20 and the slider storage hole 1 are provided in the slider storage hole 14b of the swing lever 14.
Compression coil spring 21 interposed with the back wall portion 4b
(Corresponding to the spring means in the present invention) is accommodated therein, and the slider 20 is constantly urged toward the first position by the compression coil spring 21. The electromagnetic solenoid 17 is fixed to the body 11 with the pin 19a of the plunger 19 in contact with the upper surface of the tip of the swing lever 14.
The electromagnetic solenoid 17 is configured to adsorb the plunger 19 to the yoke 23 also serving as a case when the coil 22 is energized.
Each of the suction surfaces of the yoke 23 and the yoke 23 is formed in a planar shape so that the two are in close contact with each other, so that a force required to hold the both in the suction state with relatively small power consumption can be obtained. Has become. Incidentally, the electromagnetic solenoid 17 configured as described above keeps the energized state, for example, when the automatic transmission of the vehicle is not in the parking position, and is turned off when the vehicle is shifted to the parking position. It has become. Here, the spring force of the compression coil spring 21 for urging the slider 20 in the first position direction is such that the shaft 12 is rotated in the direction of the arrow W while the electromagnetic solenoid 17 is turned off. The force acting on the slider 20 from the side of the stopper projection 13 (the spring force of the compression coil spring 18 in the electromagnetic solenoid 17 and the upward force of the torsion coil spring 16 from the downward force according to the weight of the plunger 19). The force acting on the slider 20 when the shaft 12 is turned in the direction of the arrow W in a state where the electromagnetic solenoid 17 is energized (corresponding to the subtracted force) (the above-mentioned downward force attracts the electromagnetic solenoid 17). (Corresponding to the force applied). Accordingly, the state in which the electromagnetic solenoid 17 is cut off,
That is, in a state where the automatic transmission is in the parking position, the shaft 12 is moved in the direction of the arrow W in response to the operation of the ignition key in the lock position direction.
When the slider 20 is rotated in the direction, when the tip of the stopper projection 13 contacts the slider 20, the slider 20 is moved to the first position.
Is maintained at the position. Therefore, since the swing lever 14 is pushed up by the cam surface 20a, the rotation of the shaft 12 is allowed, and the ignition key can be turned in the lock position direction shown in FIG. 1B. Become. On the other hand, when the ignition key is operated toward the lock position in a state where the electromagnetic solenoid 17 is energized, that is, when the automatic transmission of the vehicle is at a position other than the parking position, the shaft 12 moves in the direction of the arrow W. When the slider is rotated, the compression coil spring 21 is compressed and deformed after the tip of the stopper projection 13 comes into contact with the slider 20.
Is allowed in the second position direction, and the function of the cam surface 20a is invalidated. For this reason, the tip of the stopper projection 13 abuts on the rotation regulating surface 14 a of the swing lever 14, and the stopper projection 13
, The rotation operation of the ignition key in the lock position direction is prohibited. In this case, the electromagnetic solenoid 17 is a relatively small force that is slightly greater than the force obtained by subtracting the spring force of the compression coil spring 21 and the downward force corresponding to the weight of the plunger 19 from the spring force of the compression coil spring 21. Since it is only necessary to generate a force, the size can be reduced, and a large driving current does not need to flow, thereby suppressing the amount of heat generation. In addition, as a result of suppressing the amount of heat generated by the electromagnetic solenoid 17, it is not necessary to separately provide a control circuit device having a complicated circuit configuration as in the related art, and there is no possibility that the cost will increase. In particular, the electromagnetic solenoid 17 has a structure in which each suction surface between the plunger 19 and the yoke 23 is formed in a planar shape and employs a structure in which both are closely adhered to each other, thereby obtaining a force for holding them in the suction state. Is configured to minimize the power consumption required for the device, and there is an advantage that it is advantageous in obtaining the above-described effects of miniaturization and suppression of the amount of generated heat. In the conventional configuration shown in FIG. 5, when the electromagnetic solenoid 5 is energized or cut off, the plunger 6 (and the associated pin 6a) and the stopper pin 3 are moved between the operating position (FIG. 5B). Because of the reciprocating movement between the two, it is inevitable that an operating noise is generated at each moment of energization and disconnection. On the other hand, in this embodiment, the plunger 19 is always urged to the position shown in FIG. 1A by the compression coil spring 18, and the electromagnetic solenoid 17 is moved by energization / disconnection. Absent. Therefore, there is an advantage that an operation sound due to the energization / disconnection is not generated. Further, according to the present embodiment, when the electromagnetic solenoid 17 is energized, the function of the cam surface 20a is disabled, and the stopper projection 1 is turned by the rotation restricting surface 14a.
In this case, the rotation restricting surface 14a, which is located at the tip of the swinging lever 14, causes the support shaft 15 of the swinging lever 14 to rotate. Because it is formed in an arc shape with the center,
The following effects can be obtained. That is, slider 2
3, the force F acting on the swing lever 14 from the stopper projection 13 through the rotation restricting surface 14a always acts toward the rotation center C of the swing lever 14, as shown in FIG. As a result, there is no fear that an unnecessary moment force acting to rotate the swing lever 14 is generated. Therefore, even when there is an assembling error between the swing lever 14 and the stopper projection 13, the swing lever 14 is not accidentally rotated by the force from the stopper projection 13. As a result, the above-described locking function can be reliably achieved. FIG. 4 shows an example of a problem in the case where a flat rotation regulating surface 14x is formed at the tip of the swing lever 14 (the slider 20 is not shown). In the case of the configuration as shown in FIG. 4, the positional relationship between the swing lever 14 and the stopper projection 13 is determined by the force acting on the swing lever 14 from the stopper projection 13 through the rotation restricting surface 14x ( (Shown by an arrow F) toward the center of rotation C of the swing lever 14. However,
In practice, there are many cases where an assembly error δ as shown in FIG. 4 occurs between the direction of the force F from the stopper projection 13 and the rotation center C of the swing lever 14, and the error increases. In this case, when the stopper projection 13 is turned, the moment force for turning the swing lever 14 upward becomes larger than the limit, and the lock function described above may not work. In the above-described embodiment, the electromagnetic solenoid 17 is arranged in such a state that its attraction force acts from above to below. However, the arrangement of the electromagnetic solenoid 17 is different from that in the case where the attraction force is as described above. It may be a state that acts in the opposite direction or the left and right direction. Also,
In each of the above-described embodiments, the configuration in which the compression coil spring 18 is used as the urging means is not limited to this. For example, the plunger 19 included in the electromagnetic solenoid 17 is provided.
It is also possible to use its own weight as the urging means. Further, in each of the above-described embodiments, the case where the present invention is applied to a key interlock mechanism of an automobile has been described. However, the present invention can be widely applied to vehicle locking devices using an electromagnetic solenoid. As is apparent from the above description, according to the present invention, when the operation of rotating the rotor member to a specific position is selectively prohibited in accordance with the energization of the electromagnetic solenoid,
An operation position in which the rotation restricting surface provided at the distal end is located in a state of intersecting with the rotation locus of the arm member provided integrally with the rotor member, and the rotation restricting surface is retracted from the rotation locus. A stopper member reciprocally rotatable with respect to the operation release position, and retracts the stopper member from the rotation locus of the arm member in accordance with the rotation of the rotor member in a specific position direction. After providing a cam member acting to cause the rotation of the electromagnetic member, the function of the cam member is invalidated when the rotor member is rotated to a specific position in the energized state of the electromagnetic solenoid, and the function of the rotation restricting surface is enabled. And a biasing direction provided by the biasing means provided in association with the stopper member is the same as the direction in which the force is applied by the electromagnetic solenoid. Since the control surface is formed in an arc shape about the rotation support shaft of the stopper member, the electromagnetic solenoid required for the lock function of prohibiting the rotation of the rotor member to a specific position is used as the electromagnetic solenoid. However, it is possible to use a device that generates a relatively small force, so that the size of the electromagnetic solenoid can be reduced without increasing the amount of heat generated and the cost soaring. Noise, and even if there is an assembling error between the stopper member and the arm member, which are components for realizing the lock function, the lock function can be reliably performed. This is an excellent effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a swing lever (stopper member). FIG. FIG. 4 is a diagram corresponding to FIG. 3 for explaining the advantages of this embodiment. FIG. 5 is a diagram corresponding to FIG. 1 showing a conventional example. [Description of References] In the drawings, 12 is a shaft, and 13 is a stopper projection (arm). And 14 are swing levers (stopper members) and 14a.
Is a rotation restricting surface, 15 is a support shaft (rotation support shaft), 17 is an electromagnetic solenoid, 18 is a compression coil spring (biasing means), 20
Denotes a slider (cam member), 20a denotes a cam surface, and 21 denotes a compression coil spring (spring means).

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 25/00-25/10 E05B 65/12

Claims (1)

(1) A vehicle lock device for selectively prohibiting a rotation operation of a rotor member, which is rotated by an operation member, to a specific position. An arm member provided integrally, an operating position in which a rotation restricting surface provided at a distal end portion is located in a state of intersecting with the rotation locus of the arm member, and retracting the rotation restricting surface from the rotation locus; A stopper member provided so as to be capable of reciprocating rotation between the operation release position, an urging means for constantly urging the stopper member in the direction of the operation position, and moving the stopper member to the operation position in an energized state. An electromagnetic solenoid to be held, a first position provided on the stopper member, and a first position contacting the arm member prior to the rotation restricting surface when the arm member is rotated in the direction of the stopper member; A cam member reciprocally displaceable between a retracted second position; and a spring means for urging the cam member in the first position direction, wherein the cam member has the first position. A cam surface for rotating the stopper member in the direction of the operation release position when the rotor member is rotated in the direction of the specific position in a state where the electromagnetic solenoid is present; When the rotor member is rotated in the direction of the specific position in the power-off state, the first cam member is pressed against the urging force of the urging means.
And the cam member is allowed to move in the second position direction and is deformed when the rotor member is rotated in a specific position direction while the electromagnetic solenoid is energized. The lock device for a vehicle, wherein the rotation restricting surface is formed in an arc shape centered on a rotation support shaft of the stopper member.