JP3901940B2 - Door lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door lock device.
[0002]
[Prior art]
Conventionally, some door lock devices include an actuator that rotates a lock lever. The actuator rotates a cam member by driving a motor, and rotates a lock lever via a cam formed integrally with the cam member.
[0003]
[Problems to be solved by the invention]
However, the cam member has a narrow rotation range, and there is a problem that the cam curve displacement of the cam for rotating the lock lever cannot be taken gently and the torque cannot be increased.
[0004]
The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a door lock device including a cam member having a wide rotation range.
[0005]
[Means for Solving the Problems]
As means for solving the above problems, the present invention provides:
A motor that rotates forward and backward, a cam member that rotates in conjunction with the motor, a lock lever that rotates between the unlock position and the lock position in conjunction with the cam member, the motor, the cam member, and the lock In a door lock device comprising an actuator comprising a housing that houses a lever,
A first protrusion integral with the cam member;
A second protrusion integral with the housing;
A stopper member that is concentric and rotatable with the cam member;
The first projecting portion that pivots contacts the stopper member to pivot the stopper member, and the first projecting portion pivots until the pivoted stopper member contacts the second projecting portion. It was made possible.
[0006]
In the above invention, the first protrusion can rotate until the stopper member contacts the second protrusion by rotating the rotatable stopper member, and the cam member rotates in a wide rotation range. can do.
[0007]
It is preferable that the lock lever further rotates to a super lock position.
[0008]
Preferably, a coil spring that biases the cam member to a neutral position is provided, and both ends of the coil spring are locked to the first protrusion and the second protrusion.
[0009]
By providing the stopper member with receiving portions for receiving both ends of the coil spring, when the both ends of the coil spring abut against the stopper member, the receiving portion receives both ends of the coil spring and Can be protected from damage.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0011]
1 and 2 show an actuator 1 of a vehicle door lock device according to the present invention. The actuator 1 includes a housing 2, a motor 3, a cam member 4, a lock lever 5 and a stopper member 6. As shown in FIG. 2, the housing 2 includes a base portion 2 a and a cover 2 b and accommodates the motor 3, the cam member 4, the lock lever 5, and the stopper member 6. The base 2a is integrally provided with a stopper engaging portion 7 that projects from the inner surface of the base 2a. The stopper engaging portion 7 is formed as an arc plate concentric with the cam member 4.
[0012]
The motor 3 is supplied with electric power via a wiring 3 a disposed in the housing 2 and is rotated forward and backward by a control circuit (not shown) mounted on the vehicle. The motor 3 rotates the cam member 4 forward and backward via a rotation mechanism 8. The rotating mechanism 8 includes a worm attached to the drive shaft 3 b of the motor 3, and meshes with a worm gear (not shown) formed on the outer periphery of the cam member 4 to apply the driving force of the motor 3 to the cam member. 4
[0013]
As shown in FIGS. 3 (a) and 3 (b), the cam member 4 is composed of a disc-shaped main body 4a, and both ends of a concentric rotating shaft 9 are integral with the main body 4a and cover the base 2a and the cover. 2b are respectively fitted to receiving portions 9a and 9b (shown in FIG. 2) provided so as to face each other, and are supported so as to be rotatable about the rotation shaft 9. A concave cam 10 is formed on the upper surface of the main body 4a, and a cam member protrusion 11 protruding in the axial direction of the rotary shaft 9 is provided on the lower surface of the main body 4a. As shown in FIG. 1, the cam member protrusion 11 is an arc-shaped plate concentric with the stopper engaging portion 7, and has the same angle as the stopper engaging portion 7 (about 110 ° in the present embodiment) and the stopper. It has an outer peripheral surface that follows the inner peripheral surface of the engaging portion 7.
[0014]
The cam 10 includes a substantially semicircular first recess 10a and a tapered groove-shaped second recess 10b formed so as to be bent counterclockwise from the first recess 10a in FIG. 3A.
The side wall surface of the first recess 10a serves as a first cam portion 12 that switches the lock lever 5 from the unlock position to the lock position. The first cam portion 12 is a concave surface that continues from one end of the side wall surface 13 on the outer side of the second concave portion 10b to the outer peripheral surface of the rotary shaft 9, and engages with an engagement protrusion 22 described later to cause the lock lever 5 to have a radius. It rotates in the direction.
Further, the inner side wall surface of the second recess 10b serves as a second cam portion 14 for switching the lock lever 5 from the locked position to the unlocked position. The second cam portion 14 is a convex surface that continues from the outer peripheral surface of the rotating shaft 9 to the side wall surface 13 of the second concave portion 10b, and engages with the engagement protrusion 22 to rotate the lock lever 5 in the radial direction. It is.
[0015]
As shown in FIGS. 1 and 2, a coil spring 15 is provided inside the cam member protrusion 11 of the cam member 4, and both ends of the coil spring 15 are connected to the stopper engaging portion 7 and the cam member protrusion. The both ends of the part 11 are engaged with each other. As a result, the cam member 4 is urged by the coil spring 15 and is returned to the state (neutral position) shown in FIG. 1 when no driving force is transmitted from the motor 3.
[0016]
As shown in FIGS. 4A and 4B, the lock lever 5 includes a shaft portion 20 and a substantially fan-shaped lock plate 21, and the lock lever 5 is an inner lock knob of an external vehicle door lock mechanism (not shown). As shown in FIG. 2, both ends of the shaft portion 20 are fitted to receiving portions 9c and d provided to face the inner surfaces of the base portion 2a and the cover 2b as shown in FIG. It is pivotally supported so as to be rotatable about the center. The vehicle door lock device is in the unlocked position and the locked position depending on the angle at which the shaft portion 20 rotates. A cylindrical engagement protrusion 22 that protrudes toward the cam member 4 is provided on the outer peripheral edge of the lower surface of the lock plate 21. Further, when the cam member 4 is in the neutral position, the lock lever 5 can be freely switched between the unlock position and the lock position by the user operating the inner lock knob.
[0017]
The engaging protrusion 22 is slidably engaged with the first cam portion 12 of the cam member 4, and the cam member 4 rotates in the counterclockwise direction (forward rotation) in FIG. The lock plate 21 is rotated in the clockwise direction by receiving an acting force from the motor 12. Further, the engagement protrusion 22 is slidably engaged with the second cam portion 14 of the cam member 4, and the cam member 4 rotates in the clockwise direction (reverse rotation) in FIG. The lock plate 21 is rotated counterclockwise in response to an acting force from 14.
[0018]
As shown in FIG. 5, the stopper member 6 includes a main body portion 6a and a bottom surface portion 6b, and a stopper portion 30 is integrally provided on the outer peripheral edge of the bottom surface portion 6b. The main body portion 6a has a substantially cylindrical shape, and the cylindrical portion 4b of the cam member 4 is fitted from the upper end opening side of the main body portion 6a to support the stopper member 6 so as to be rotatable concentrically with the cam member 4. It is. The stopper portion 30 has a fan shape concentric with the main body portion 6a, and notches 32a and b (receiving portions) for receiving both ends of the coil spring 15 are formed on both end surfaces 31a and b of the fan shape. Has been.
[0019]
Next, the operation of the vehicle door lock device configured as described above will be described.
[0020]
As shown in FIG. 6A, when the vehicle door lock device is in the unlocked state, current is supplied to the motor 3 by the control circuit, the motor 3 rotates forward, and the cam member 4 rotates counterclockwise. To turn. At this time, the cam member protrusion 11 of the cam member 4 rotates counterclockwise together with the one end 15a of the coil spring 15 from the neutral position shown in FIG. 8A and contacts the end surface 31b of the stopper 30. . As a result, the stopper 30 receives the acting force from the cam member protrusion 11 and rotates counterclockwise. At this time, one end 15 a of the coil spring 15 is fitted into the notch 32 b of the stopper 30. Then, when the end surface 31a of the stopper portion 30 comes into contact with one end of the stopper engaging portion 7 as shown in FIG. 8B, the stopper member 30 rotates the cam member 4 via the cam member protruding portion 11. Stop moving. Thus, the cam member 4 can be rotated 180 degrees or more in the counterclockwise direction. At this time, both ends 15a and b of the coil spring 15 are fitted into the notches 32a and b of the stopper portion 30, respectively, and are not damaged because they do not receive an acting force from the end surfaces 31a and b.
[0021]
As a result, the engagement protrusion 22 shown in FIG. 6A is engaged with the first cam portion 12 of the cam member 4 that rotates counterclockwise and receives an acting force, and the lock lever 5 4 is rotated in the clockwise direction while interlocking with 4, and is rotated to the lock position as shown in FIG. Thereby, a door lock device will be in a locked position state. Thus, since the cam member 4 is rotated 180 degrees or more and the lock lever 5 is rotated from the unlock position to the lock position, the cam curve of the first cam portion 12 can be gently displaced, and the motor 3 torque up.
[0022]
When the supply of current stops, the cam member 4 is shown in FIGS. 7A and 8A by the biasing force of the coil spring 15 from the locked position shown in FIGS. 6B and 8B. Thus, it is returned to the neutral position state.
[0023]
Further, as shown in FIG. 7A, when the vehicle door lock device is in the locked state, when the current is supplied to the motor 3 by the control circuit and the motor 3 is rotated in the reverse direction, the cam member 4 is rotated. Rotate around. At this time, the cam member protrusion 11 of the cam member 4 rotates clockwise together with the one end 15b of the coil spring 15 from the neutral position shown in FIG. 8A and contacts the end surface 31a of the stopper 30. Thereby, the stopper part 30 receives the action force from the cam member protrusion part 11 and is rotated in the clockwise direction. At this time, one end 15 b of the coil spring 15 is fitted into the notch 32 a of the stopper 30. Then, when the end surface 31b of the stopper portion 30 comes into contact with one end of the stopper engaging portion 7 as shown in FIG. 8C, the stopper member 30 rotates the cam member 4 via the cam member protruding portion 11. Stop moving. Thus, the cam member 4 can be rotated 180 degrees or more in the clockwise direction. At this time, both ends 15a and 15b of the coil spring 15 are not damaged because they are fitted into the notches 32a and 32b as described above.
[0024]
As a result, the engagement protrusion 22 shown in FIG. 7A is engaged with the second cam portion 14 of the cam member 4 that rotates in the clockwise direction and receives an acting force, and the lock lever 5 It rotates in the counterclockwise direction in conjunction with the rotation, and rotates to the unlock position as shown in FIG. Thereby, a door lock device will be in an unlock position state. As described above, the cam member 4 is rotated by 180 degrees or more and the lock lever 5 is rotated from the locked position to the unlocked position, so that the cam curve of the second cam portion 14 is gently displaced as described above. The torque of the motor 3 can be increased.
[0025]
When the supply of current is stopped, the cam member 4 is moved from the unlocked position shown in FIGS. 7B and 8C to the state shown in FIGS. 6A and 8A by the urging force of the coil spring 15. As shown, it is returned to the neutral position.
[0026]
Further, as a modification of the above embodiment, the cam member 4 can be rotated by 180 degrees or more in both rotation directions, so that, for example, the lock lever 5 is rotated between the unlock position, the lock position, and the super lock position. Cam shape can be added. As shown in FIG. 9, the cam 10 of the cam member 4 has cam wall surfaces 41a, b, c, d and concentric circular arc concave and convex surfaces having radii r ₁ and r ₂ around the rotation shaft 9, respectively. It consists of a certain concentric wall surface 42a, b. The cam wall 41a is a concave surface displaced from the inner circumferential surface of the outer wall 4c to a radius r ₁ relative to the rotary shaft 9 contiguous to one end of the concentric walls 42a. The cam wall surface 41 b is a concave surface that is displaced in the radial direction from the other end of the concentric wall surface 42 a to the outer peripheral surface of the rotating shaft 9. On the other hand, the cam wall surface 41c is a substantially flat surface that is displaced from the outer peripheral surface of the rotating shaft 9 to the radius r _{2 with} respect to the rotating shaft 9 and continues to one end of the concentric wall surface 42b. The cam wall surface 41d is a convex surface that is displaced in the radial direction from the other end of the concentric wall surface 42b to the inner peripheral surface of the outer wall 4c. These surfaces 41a, 42a, 41b, 41c, 42b and 41d are arranged in a substantially S shape in the plane.
[0027]
With this configuration, the cam wall surface 41a rotates the lock lever 5 from the unlock position to the lock position, and the cam wall surface 41b rotates the lock lever 5 from the lock position to the super lock position. The lock lever 5 is rotated from the super lock position to the lock position by the wall surface 41c, and the lock lever 5 is rotated from the lock position to the unlock position by the cam wall surface 41d.
[0028]
【The invention's effect】
As is clear from the above description, according to the present invention,
The first protrusion that rotates integrally with the cam member is rotated in contact with the stopper member, and the first protrusion rotates until the rotated stopper member contacts the second protrusion integrated with the housing. Since the cam member can move, the cam member can be rotated in a wide rotation range of 180 degrees or more until the stopper member abuts on the second protrusion, and the cam curve of the cam member can be displaced gently. There is an effect that the torque of the motor rotating the member can be increased. Moreover, since it has a wide rotation range, it is also possible to easily add a cam shape that rotates the cam member between the unlock position, the lock position, and the super lock position.
[Brief description of the drawings]
FIG. 1 is a plan view of a vehicle door lock device according to an embodiment of the present invention with a cover removed showing an actuator.
FIG. 2 is a cross-sectional view taken along the line II of FIG.
3A is a plan view showing the cam member of FIG. 1. FIG. (B) is the III-III sectional view taken on the line of (a).
4A is a plan view showing the lock lever of FIG. 1. FIG. (B) is a side view of (a).
5 is a perspective view showing the stopper member of FIG. 1. FIG.
6A and 6B are plan views showing an example of the operation of the cam member and the lock lever in FIG.
7A and 7B are plan views showing an example of the operation of the cam member and the lock lever in FIG.
8A, 8B, and 8C are cross-sectional views taken along line II-II showing an example of the operation of the cam member and the lock lever of FIG.
9 is a perspective view showing a cam member according to a modification of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Actuator 2 Housing 3 Motor 4 Cam member 5 Lock lever 6 Stopper member 7 Stopper engaging part (2nd protrusion part)
11 Cam member protrusion (first protrusion)

Claims (4)

A motor that rotates forward and backward, a cam member that rotates in conjunction with the motor, a lock lever that rotates between the unlock position and the lock position in conjunction with the cam member, the motor, the cam member, and the lock In a door lock device comprising an actuator comprising a housing that houses a lever,
A first protrusion integral with the cam member;
A second protrusion integral with the housing;
A stopper member that is concentric and rotatable with the cam member;
The first projecting portion that pivots contacts the stopper member to pivot the stopper member, and the first projecting portion pivots until the pivoted stopper member contacts the second projecting portion. A door lock device characterized in that it is possible. The door lock device according to claim 1, wherein the lock lever further rotates to a super lock position. The coil spring which urges | biases the said cam member to a neutral position is provided, The both ends of this coil spring are latched by the said 1st projection part and the said 2nd projection part, The Claim 1 or 2 characterized by the above-mentioned. Door lock device. The door lock device according to claim 3, wherein the stopper member is provided with receiving portions that receive both ends of the coil spring.

Images