JPH07150839A - Lock device for car - Google Patents

Abstract

PURPOSE:To miniaturize an electromagnetic solenoid without the augmentation of a calorific value and an increase in cost while also suppressing noises simultaneously. CONSTITUTION:A shaft 12 connected to a key rotor for an ignition switch in a coaxial manner integrally has a projection 12a for a stopper. A stopper pin 13 is reciprocated and moved between the position of operation projected into the rotary locus of the projection 12a for the stopper and the position of operation release retreated from the rotary locus, energized to the lower position of operation by the spring force of a compression coil spring 19 mounted on an electromagnetic solenoid 15 at a normal time, and held at the position of operation under the state of the conduction of the electromagnetic solenoid 15. A cam face 20 formed to an abutting surface with the stopper pin 13 in the projection 12a for the stopper upwards pushs up the stopper pin 13 when the shaft 12 is rotated in the direction of the arrow W (the direction of the position of the locking of the ignition switch).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lock device that can be used as a key interlock device for an automobile.

[0002]

2. Description of the Related Art For example, in a shift lock mechanism provided in an automobile, a key interlock mechanism is provided in order to reliably perform an operation of shifting an automatic transmission to a parking position when an ignition key is removed. Is being added. FIG. 7 shows a configuration example of the main part of such a key interlock mechanism.

That is, in FIG. 7, a shaft 2 rotatably supported in a body 1 is coaxially connected to a key rotor (not shown) for an ignition switch, and the ignition key is well known. Each operation position (lock position, accessory position, ON position and start position)
It turns in conjunction with turning operation to. A stopper projection 2a is integrally formed on the outer periphery of the shaft 2 so as to project therefrom.

A stepped through hole 1a formed in the body 1
The stopper pin 3 arranged in the
The operating position (the position shown in FIG. 7B) protruding into the rotation locus of a and the operation releasing position retracted from the rotation locus (see FIG. 7B).
It is configured such that it can reciprocate between the position (a) and the position (a). When the stopper pin 3 is in the operating position, the stopper projection 2a comes into contact with the stopper pin 3 to restrict the rotation of the shaft 2 and thus the rotation of the ignition key to the lock position. The return compression coil spring 4 is provided so as to urge the stopper pin 3 in the operation releasing position direction (upward direction).

Electromagnetic solenoid 5 fixed to 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 in the direction of the core 7 (downward), a damper rubber 9, and the plunger 6 as a stopper pin. It is provided with a compression coil spring 10 which urges in three directions (downward).
In this case, the spring force of the return compression coil spring 4 is 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. Is set to be

Therefore, when the operation of the electromagnetic solenoid 5 is stopped (the excitation coil 8 is in the disconnected state), the stopper pin 3 and the plunger 6 are caused by the spring force of the compression coil spring 4 for return.
Is held in the state of FIG. 7 (a) moved upwards, which allows the ignition key to rotate to the locked position. From this state, the exciting coil 8
When the electromagnetic solenoid 5 is operated by energizing the
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 of FIG. 7 (b). The contact between the projection 2a and the stopper pin 3 restricts the rotation of the ignition key to the locked position.

[0007]

In the above-mentioned conventional structure, since the return compression coil spring 4 is provided, the stopper pin 3 is moved from the operation release position of FIG. 7 (a) to the operation position of FIG. 7 (b). Electromagnetic solenoid 5 when moving to
Must perform a 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 from the weight of the plunger 6). Therefore, it is necessary to make the generated force of the electromagnetic solenoid 5 relatively large, which causes a problem that the electromagnetic solenoid 5 becomes large. 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 due to the increase in the drive current is increased, which may adversely affect the life. come. Moreover, the electromagnetic solenoid 5
At the time of the operation and the stop of the operation, a collision noise between the plunger 6 and the damper rubber 9 and a collision noise 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, in the prior art, for example, actual Kaihei 1-1450
As disclosed in Japanese Patent Publication No. 4), after the electromagnetic solenoid is driven, the amount of heat generation is suppressed by providing a control circuit device configured to hold the operating state of the electromagnetic solenoid with the driving voltage lowered. However, in this case, it is necessary to separately provide a control circuit device having a complicated circuit configuration, which causes a new problem that the cost becomes high.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the size of an electromagnetic solenoid without increasing the heat generation amount and the cost, and at the same time suppress noise. An object of the present invention is to provide a vehicle lock device that achieves the effects described above.

[0010]

In order to achieve the above-mentioned object, the present invention is a vehicle for selectively prohibiting a turning operation of a rotor member which is turned by an operating member to a specific position. In the lock device for a vehicle, an arm member provided integrally with the rotor member, an operating position for entering the rotation locus of the arm member to prohibit the rotation of the rotor member to the specific position, and the rotation position. A stopper member provided so as to be reciprocally displaceable between and at an operation release position retracted from the movement trajectory, an urging means for constantly urging the stopper member in the operation position direction, and the stopper member in an energized state. An electromagnetic solenoid for holding the rotor in the operating position, and at least one of the mutual contact surfaces of the arm member and the stopper member has the rotor member in a disconnected state of the electromagnetic solenoid. It is obtained by a structure which forms a cam surface to displace to the deactuated position direction against the urging force of the urging means the stopper member when the a particular position direction is rotation operation.

[0011]

The urging means normally urges the stopper member toward the operating position in a state in which the stopper member is in the turning locus of the arm member at all times. When the electromagnetic solenoid is energized when the stopper member is moved to the operating position by such an urging force, the stopper member is held at the operating position. The turning operation to is prohibited. On the other hand, when the electromagnetic solenoid is disconnected, the cam surface formed on the contact surface of the arm member with the stopper member when the rotor member is rotated in the specific position direction. By the action, the stopper member is displaced in the operation releasing position direction against the urging force of the urging means, so that the rotor member is rotated to the specific position.

In this case, the electromagnetic solenoid only needs to generate a relatively small force for holding the stopper member in the operating position, so that the electromagnetic solenoid can be downsized and a large drive current needs to flow. As a result, the heat generation amount can be suppressed, and as a result of the heat generation amount being suppressed in this way, it is not necessary to separately provide a control circuit device having a complicated circuit configuration as in the past, which may lead to an increase in cost. Disappears. Moreover, the stopper member is moved to the operating position by the biasing means, and the stopper member is moved to the operation releasing position by the external operation force acting on the cam surface through the rotor member. It is possible to reduce the noise generated by the movement.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a key interlock mechanism of an automobile will be described below with reference to FIG. In FIG. 1, a shaft 12 rotatably supported in a body 11 is made of zinc die casting, for example, and is coaxially connected to a key rotor (corresponding to a rotor member in the present invention) for an ignition switch (not shown). A stopper projection 12a corresponding to the arm member according to the present invention is integrally formed on the outer periphery of the projection 12a. The stopper projection 12a of the shaft 12 is interlocked with the ignition key corresponding to the operation member according to the present invention when the ignition key is rotated to each known operation position (lock position, accessory position, ON position and start position). And each position LOC shown in FIGS. 1 (a), 1 (b), 1 (c), and 1 (d).
It exists in K, ACC, ON, ST.
The lock position corresponds to the specific position in the present invention.

A stepped through hole 11a is formed in the body 11 at a position corresponding to the axis of the shaft 12, and a stopper pin 13 as a stopper member reciprocates vertically in the through hole 11a. It is possible. In this case, the stopper pin 13 has an operating position (see FIG. 1) protruding into the rotation locus of the stopper protrusion 12a.
It reciprocates between the positions (b) to (d)) and the operation release position (the position shown in FIG. 1A) which is retracted from the rotation locus. The compression coil spring 1 for urging the stopper pin 13 upward is provided between the flange portion above the stopper pin 13 and the stepped portion of the through hole 11a.
4 is interposed.

Electromagnetic solenoid 1 fixed to body 11
5 is a pin 1 that abuts the stopper pin 13 from above.
A plunger 16 having 6a, a core 17 attracted by the plunger 16, an exciting coil 18 for attracting the plunger 16 in the direction of the core 17 (downward), and a force of the plunger 16 in the direction of the stopper pin 13 (downward) The compression coil spring 19 (corresponding to the urging means in the present invention) is provided.

In this case, regarding the spring force of the compression coil spring 19, the downward force obtained by adding the spring force and the weights of the plunger 16, the compression coil spring 19 and the stopper pin 13 is the downward force of the compression coil spring 14. It is set to a value larger than the spring force. Therefore, the stopper pin 13 is always urged by the spring force of the compression coil spring 19 toward the lower operating position (the position shown in FIGS. 1B to 1D).

Further, in the electromagnetic solenoid 15, the upper surface of the core 17 and the lower surface of the plunger 16, that is, the attraction surfaces between the core 17 and the plunger 16 are formed in a flat shape, and both are in close contact with each other. As a result, the force required to hold the both in the attracted state can be obtained with relatively small power consumption. It should be noted that the electromagnetic solenoid 15 is configured such that it keeps the energized state when the automatic transmission of the automobile is in a position other than the parking position, and the power is cut off when the automatic transmission is shifted to the parking position.

Now, the contact surface of the stopper projection 12a with the stopper pin 13 (specifically, the surface with which the stopper pin 13 is in contact with the stopper projection 12a in the operating position protruding into the rotation locus of the stopper projection 12a). ) Indicates an angle θ (see FIG. 1) from a plane orthogonal to the rotation direction of the stopper projection 12a.
The cam surface 20 is formed so as to have a shallow inclination (see (a)). As a result, when the ignition key is rotated from the accessory position toward the lock position while the electromagnetic solenoid 15 is disconnected, the shaft 12 moves from the position shown in FIG. 1B to the position shown in FIG.
When it is rotated in the direction of arrow (direction of arrow W), the stopper pin 13 is pushed upward by the cam surface 20, and when the rotation operation of the ignition key as described above is continued. Therefore, the stopper pin 13 is displaced in the direction of the operation releasing position against the weight of the compression coil spring 19 and the plunger 16.

The tip surface of the stopper projection 12a, that is, the surface with which the lower end of the stopper pin 13 abuts when the ignition key is in the lock position shown in FIG. 1A, is the locus of rotation of the stopper projection 12a. It is formed in an arc surface shape along.

Next, the operation of this embodiment having the above construction will be described. The stopper pin 13 is always urged by the spring force of the compression coil spring 19 and the weight of the plunger 16 in the direction in which the stopper projection 12a enters the rotation locus (that is, the operating position direction). In this case, when the ignition key is in the locked position, the stopper pin 13 is in a state where its lower end is in contact with the tip surface of the stopper projection 12a, as shown in FIG. 1 (a). However, when the ignition key is in a position other than the lock position, the ignition key shown in FIG.
It is moved to the operating position shown in (d).

When the automatic transmission of the automobile is in a position other than the parking position while the stopper pin 13 is in the operating position, the electromagnetic solenoid 15 is energized, so that the plunger 16 is attached to the core 17. As a result, the stopper pin 13 is held in the operating position.

Therefore, in this state, even if the ignition key is rotated from the accessory position to the lock position, it becomes difficult for the cam surface 20 to push the stopper pin 13 upward, and the ignition key (and hence the key rotor) is locked. The turning operation to is prohibited.

On the other hand, when the automatic transmission of the automobile is shifted to the parking position while the stopper pin 13 is in the operating position, the electromagnetic solenoid 15 is cut off, so that the stopper pin is stopped. The force for holding 13 in the operating position is the spring force of the compression coil spring 19, the plunger 1
6, the compression coil spring 19 and the stopper pin 13
From the downward force, which is the sum of the weight of
It is a relatively small force minus the upward spring force.

Therefore, when the ignition key is rotated from the accessory position to the lock position in such a state, the cam surface 20 causes the stopper pin 13 to move upward against the relatively small downward force. As a result, the stopper pin 13 is finally displaced to the operation release position, and accordingly, the ignition key is rotated to the lock position.

In this case, the electromagnetic solenoid 15 only needs to generate a relatively small force for holding the stopper pin 13 in the operating position, so that the electromagnetic solenoid 15 can be downsized and a large driving current can be passed. It becomes unnecessary to suppress the amount of heat generation. Further, as a result of suppressing the amount of heat generated by the electromagnetic solenoid 15 in this manner, there is no need to separately provide a control circuit device having a complicated circuit configuration as in the conventional case, and there is no risk of an increase in cost. In particular, the electromagnetic solenoid 15 includes a core 17 and a plunger 16.
By adopting a structure in which each suction surface between them is formed into a flat shape and the two are closely adhered, the power consumption required to obtain the force for holding them in the suction state is configured to be as small as possible. Therefore, there is an advantage that it is advantageous in obtaining the above-described effect of miniaturization and suppression of the amount of heat generation.

Further, in the conventional example shown in FIG. 7, the plunger 5 (and the pin 6a accompanying it) and the stopper pin 3 are released from the operating position (FIG. 7 (b)) and released by energizing / disconnecting the solenoid 5. Since it reciprocates between the position (Fig. 7 (a)), at each moment of energization / disconnection,
It is inevitable that operating noise is generated.

On the other hand, in the example of the present invention shown in FIG. 1, the plunger 16 (and the pin 16a associated therewith) is provided.
1 and the stopper pin 13 are always shown in FIG.
Since the solenoid 15 is biased to the position (b), it does not move due to energization / disconnection of the solenoid 15. Therefore, it (energization
There is an advantage that the operating noise caused by the disconnection is not generated.

In the above embodiment, the stopper projection 12
Although the shape of the cam surface 20 formed in a is flat, as shown in FIG.
As shown in FIG. 3, a cam surface 21 having an arcuate surface shape that promotes the cam effect may be formed, and as shown in FIG. 3, the plate 22 made of a material having a small friction coefficient with respect to the stopper projection 12a. Alternatively, the cam surface 23 may be formed by pasting.

FIG. 4 shows a second embodiment of the present invention, and only the parts different from the first embodiment will be described below. That is, this embodiment is characterized in that the function of the stopper pin 13 in the first embodiment is substituted by the pin 16a 'of the plunger 16 of the electromagnetic solenoid 15, and therefore the pin 16a' is the main part. This corresponds to the stopper member in the invention.

According to this embodiment having such a structure, the stopper pin 13 and the compression coil spring 19 in the first embodiment are unnecessary, so that the number of parts can be reduced and the cost can be reduced accordingly. Like

FIG. 5 shows a third embodiment of the present invention having the same effect as that of the first embodiment. Only the parts different from the first embodiment will be described below. That is, this embodiment is characterized in that the swing lever 24 is provided as a stopper member instead of the stopper pin 13 in the first embodiment. Specifically, the shaft 12 is provided with a stopper protrusion 12b instead of the stopper protrusion 12a in the first embodiment, and the through recess 11 of the body 11 is provided.
The swing lever 24 is provided at a so as to be reciprocally rotatable in the vertical direction.

In this case, the rocking lever 24 is adapted to reciprocally rotate between an operating position in which the stopper projection 12b projects into the rotation locus and an operation releasing position retracted from the rotation locus. The pin 16 of the plunger 16 of the electromagnetic solenoid 15 is provided on the upper surface of the swing lever 24.
It is arranged so that a is brought into contact with it. A torsion coil spring 25 that biases the swing lever 24 upward is provided at the base of the swing lever 24. The spring force of the twist coil spring 25 is the spring of the compression coil spring 19. It is set to be a value smaller than the downward force, which is the total of the force and the weight of the plunger 16, the compression coil spring 19 and the swing lever 24.

The rocking lever 24 is provided so that its tip end surface abuts on the tip end portion of the stopper projection 12b. The tip end surface of the swing lever 24 is perpendicular to the rotation direction of the stopper projection 12b. It is formed as a cam surface 26 set to have a shallow inclination by an angle θ.

As a result, when the shaft 12 is rotated in the direction of arrow W as the ignition key is rotated in the direction from the accessory position to the lock position while the electromagnetic solenoid 15 is turned off, The oscillating lever 24 is pushed upward by the cam surface 26, and when the above-described turning operation of the ignition key is continued, the oscillating lever 24 causes the compression coil spring 19 and the plunger 16 to move. It will be displaced toward the operation release position against the weight.

Further, the structure of the fourth embodiment of the present invention shown in FIG. 6 can be adopted. That is, this embodiment is characterized in that a swing lever 27 having a different fulcrum position is provided in place of the swing lever 24 in the third embodiment. The swing lever 27 is also adapted to reciprocally rotate between an operating position that projects into the rotation locus of the stopper projection 12b and an operation release position that is retracted from the rotation locus. The pin 16a on the electromagnetic solenoid 15 side is placed in contact with the upper surface of the moving lever 27. Further, the torsion coil spring 28 provided for urging the swing lever 27 upward at the base of the swing lever 27 has a spring force equal to that of the compression coil spring 19 and the plunger 1.
6. The value is set to be smaller than the downward force, which is the sum of the weight of the compression coil spring 19 and the weight of the swing lever 27.

The swing lever 27 has a recess 27a into which the tip of the stopper projection 12b is fitted on the lower surface thereof.
Is formed in the recess 27a. The surface of the recess 27a that abuts on the tip of the stopper projection 12b is provided with a stopper projection 12b.
A cam surface 29 is formed so as to be inclined at an angle θ shallower than a surface orthogonal to the rotation direction of b.

Thus, when the shaft 12 is rotated in the arrow W direction as the ignition key is rotated in the lock position direction from the accessory position while the electromagnetic solenoid 15 is cut off, The rocking lever 27 is pushed upward by the cam surface 29, and when the turning operation of the ignition key as described above is continued, the rocking lever 27 causes the compression coil spring 19 and the plunger 16 to move. It will be displaced toward the operation release position against the weight.

In each of the above-described embodiments, the compression coil spring 19 is used as the biasing means, but the invention is not limited to this. For example, the weight of the plunger 16 of the electromagnetic solenoid 15 is used as the biasing means. It is also possible to use. Further, in each of the above-described embodiments, the case where the invention is applied to the key interlock mechanism of the automobile has been described, but the invention can be widely applied to general vehicle lock devices using an electromagnetic solenoid.

[0039]

As is apparent from the above description, according to the present invention, the rotation operation of the rotor member rotated by the operation member to the specific position is selectively performed according to the energization of the electromagnetic solenoid. In the case of prohibiting, at least one of an arm member provided integrally with the rotor member and a stopper member for prohibiting the rotation of the arm member is devised so that a cam surface is formed, and the stopper member is provided. A structure in which the urging direction of the accompanying urging means is the same as the direction in which the force of the electromagnetic solenoid acts, so that the electromagnetic solenoid generates the necessary force with relatively small power consumption. Since the electromagnetic solenoid can be downsized without increasing the heat generation amount and the cost, the electromagnetic solenoid can be used. Suppression of noise caused by the energizing and disconnecting electricity to de is also intended to achieve an excellent effect of obtaining aims simultaneously.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of the present invention in a different state.

FIG. 2 is a sectional view of an essential part showing a first modification of the first embodiment.

FIG. 3 is a sectional view of an essential part showing a second modification of the first embodiment.

FIG. 4 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 5 is a vertical sectional view showing a third embodiment of the present invention.

FIG. 6 is a vertical sectional view showing a fourth embodiment of the present invention.

FIG. 7 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

In the drawings, 12 is a shaft, 12a and 12b are stopper projections (arm members), 13 is a stopper pin (stopper member), 15 is an electromagnetic solenoid, 16 is a plunger, 16
a is a pin, 16a 'is a pin (stopper member), 17 is a core, 18 is an exciting coil, 19 is a compression coil spring (biasing means), 20, 21, 23, 26 and 29 are cam surfaces, 24,
Reference numeral 27 denotes a swing lever (stopper member).

Claims (1)

[Claims] 1. A vehicle lock device for selectively inhibiting a rotation operation of a rotor member, which is rotated by an operation member, to a specific position, comprising an arm member integrally provided with the rotor member. Provided so as to be reciprocally displaceable between an operation position for inhibiting the rotation of the rotor member to the specific position by entering the rotation trajectory of the arm member and an operation release position retracted from the rotation trajectory. The stopper member, an urging means that constantly urges the stopper member toward the operating position, and an electromagnetic solenoid that holds the stopper member in the operating position in an energized state, the arm member and the stopper member On at least one of the mutual abutting surfaces of the stopper member when the rotor member is rotated in the specific position direction while the electromagnetic solenoid is disconnected. The vehicle locking apparatus characterized by the formation of the cam surface to displace to the deactuated position direction against the biasing force of the biasing means.