JPH0243172Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door lock device suitable for use in locking a side door of an automobile. This invention relates to a door lock device configured to obtain an unlocked state by rotating an open lever pivotally attached to the base of a base plate.

An example of this type of door lock device is shown in FIGS. 1-3. In these figures, reference numeral 1 denotes a base plate, and an open lever 2 is pivotally attached to the base of the base plate by a pin 3 so as to be rotatable in a plane substantially parallel to the base. A spring 4 stretched between the hook portion 2a of the open lever 2 and the base plate 1 urges the open lever 2 to rotate in the clockwise direction in FIG. Further, the arm portion 2b of the open lever 2 is inserted through the long hole 1a of the base plate 1, and the arm portion 2c is provided with a long hole 2d. Reference numeral 5 denotes a bell crank which is pivotally attached to a side portion bent at a right angle to the base of the base plate 1 by a pin 6 so as to be rotatable in a plane approximately parallel to this side portion, and its arm portion 5a
is in contact with the arm portion 2b of the open lever 2.
7 is a locking lever pivotally connected to the base of the base plate 1 by a pin 8;
A pin 9 that slides in the elongated hole 2d is inserted into an elongated hole 7b formed in the arm 7a of the locking lever 7. This locking lever 7 is operated by a stopper 7c by the action of a toggle spring 10.
It takes only two positions, where it comes into contact with the side surface of the cutout of the body 11, and one of these positions is selected by the intermediate lever 13 connected to the arm 7d via the rod 12. . Note that the intermediate lever 13 is pivotally attached to the side of the base plate 1 by a pin 14. Reference numeral 15 denotes a substantially L-shaped open lift lever, with a pin 16 protruding from one arm 15a, and a long hole 15 extending in the direction of the pin 16 at the corner.
b is drilled. The pin 3 is inserted through the elongated hole 15b to ensure rotation of the open lift lever 15 around the corner and sliding movement in the longitudinal direction of the elongated hole 15b. Further, the pin 9 is adapted to be engaged with and disengaged from the side surface (inner surface of the L-shape) of the other arm portion 15c of the open lift lever 15. Reference numeral 17 denotes a pole rotatably mounted with a pin 18 in a recess provided on the back side of the body 11, and is rotated by the pin 16 inserted through a hole 17a in the middle of the pole. be. The door is unlocked in accordance with the movement of this pole 17. The arm portion 5b of the bell crank 5 is connected to an inside handle (not shown) of the door by a rod (not shown), and the intermediate lever 13 is connected to a knob (not shown) by a rod (not shown). Ru.

In the door lock device having such a structure, when the intermediate lever 13 is rotated to push the rod 12 up into the locked state (see FIG. 3b), the movement of the bell crank 5 is transmitted to the open lever 2; Since the pin 9 does not contact the arm portion 15c of the open lift lever 15, the signal is not transmitted to the open lift lever 15. Therefore, the door cannot be opened. Moreover, even if it is in the locked state, if this lock is released due to a child's mischief inside the vehicle (the state shown in Figure 3 a) and the inside handle is operated, the open lever 2 will shift from the open lift lever 15. The movement is transmitted through the pin 9, and the pawl 17 eventually rotates, allowing the door to open even when the car is running.

In order to solve this problem, a door lock device equipped with a child-proof lever, which is a lever that cannot be operated when the door is closed because it is close to the body center pillar, but which can prevent the bell crank from swinging inadvertently, has been developed. It has already been put into practical use. However, the conventional type had the disadvantage that the child-proof lever required a heavy operating force and was difficult to assemble.

The present invention has been made in view of this point, and its purpose is to provide a door lock device with a child-proof mechanism, in which the operation force of the child-proof lever is light and the ease of assembly is good. be.

To achieve the above object, the present invention includes a base plate having a base portion and a side portion bent substantially perpendicularly to the base portion; and an open lever that is rotatably attached to the base of the base plate in a plane substantially parallel to the base and has an arm that is pushed by the arm of the bell crank. , in a door lock device which rotates the open lever and obtains an unlocked state by rotating the bell crank, a first elongated hole extending in the direction of movement of the arm of the open lever; a base plate having a guide groove drilled in the side thereof, the base plate comprising a second elongated hole portion that is continuous with the elongated hole portion and extends in a direction substantially perpendicular to the first elongated hole portion;
an open lever having an arm movably inserted into the first elongated hole of the base plate; and a guide provided in a portion of the guide groove of the base plate closer to the second elongated hole than the arm of the open lever. When the sliding pin that is movably engaged in the groove is located near a continuous point between the first and second elongated holes of the base plate, the arm portion comes into contact with the sliding pin. , a bell crank that can push the sliding pin toward the arm side of the open lever, and a bell crank that is located at a side of the base plate and approximately on an extension line of the first elongated hole, and approximately connected to the side. The arm portion is pivotally mounted to be rotatable in a parallel plane, and the arm portion is provided with an elongated hole that substantially overlaps the first elongated hole portion, and the sliding pin is inserted into the elongated hole. The device is characterized by comprising a childproof lever that is movably engaged within the elongated hole and moves the sliding pin to a position above the second elongated hole where it does not come into contact with the bell crank. .

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 4 to 8. In these figures, the same reference numerals are given to the parts corresponding to those in FIGS. 1 to 3, and the explanation thereof will be omitted. In the figure, 2
0 is a child-proof lever, which is pivotally connected to the side of the base plate 1 from the outside by a pin 21. This childproof lever 20 is
The stopper 20a is located in the notch 1b of the base plate 1.
It takes two positions, touching the side of the body, and does not take an intermediate position. This operation is performed by the spring 10 mentioned above.
This is ensured by a toggle spring 22 which has a similar function. 23 is a sliding pin that engages with the guide groove 1c so as to be able to move within the approximately L-shaped guide groove 1c bored in the side of the base plate 1;
It is inserted into an elongated hole 20c drilled in the arm portion 20b of 0. The guide groove 1c is continuous with a first elongated hole 1d that is bored in the moving direction of the arm 2b of the open lever 2 and through which the arm 2b is inserted. It consists of a second elongated hole portion 1e that is substantially perpendicular to the first elongated hole portion 1d. The large circular part 1f at the end of the second elongated hole part 1e is a mounting hole, and when the sliding pin 23 is set in the guide groove 1c of the base plate 1 as shown in FIG. The portion 23a is provided so as to be able to penetrate the base plate 1. Further, the pin 21 is positioned approximately on an extension line of the first elongated hole portion 1d, and the elongated hole 20c is bored in a shape that substantially overlaps with the first elongated hole portion 1d. Incidentally, the arm portion 5a of the bell crank 5 is bent to form a recessed portion 5c for relief. Furthermore, when the child proof is released, the sliding pin 23 is located near the corner of the guide groove 1c, that is, the point where the first and second elongated holes 1d and 1e are continuous (the bell crank 5 can come into contact with the sliding pin 23). 7a), and in the childproof state, the bell crank 5 is pushed up along the second elongated hole 1e (a position where the bell crank 5 cannot come into contact with the sliding pin 23, FIG. 7b). This is set by the childproof lever 20 as shown in (see). Furthermore, in order to prevent the arm portion 2b of the open lever 2 from rotating to the position where the sliding pin 23 was when the sliding pin 23 is pushed up to the position shown in FIG. A bent arm portion 2e is provided, and the arm portion 2e is inserted into a rotation regulating elongated hole 1g of the base plate 1.

With the above structure, when the child proof is released, the bell crank 5 is rotated, so that the bell crank 5 pushes the sliding pin 23, and this sliding pin 23 pushes the open lever 2. The open lever 2 can be rotated by pushing the arm portion 2b. On the other hand, during childproofing, the sliding pin 23 moves to the positions shown in FIG. 7b and FIG. 8b due to the rotation of the childproof lever 20 in the clockwise direction in FIG. It never touches the pin.
Also, at this time, of course, it does not come into contact with the open lever 2. Therefore, the bell crank 5 is the open lever 2.
You will not be able to rotate the ball and will end up missing the ball.

In the above embodiment, the direction in which the sliding pin 23 escapes is upward in FIG. 4, but it may escape downward. To achieve this, the second elongated hole 1
e It is sufficient to drill downward. With this configuration, there is no need to form the recess 5c in the bell crank 5.

As explained above, the operating force of the childproof lever according to the present invention is sufficient as long as it can simply move the sliding pin, and is reduced compared to the conventional device. In addition, the child-proof mechanism requires only the child-proof lever and sliding pin, making it easy to assemble.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a door lock device;
Figure 2 is an exploded perspective view of the main parts of Figure 1, Figure 3 is an explanatory diagram of the operation of the device shown in Figure 1, Figure 4 is an exploded perspective view of the main parts of an embodiment of the present invention, and Figure 5. is a perspective view of the main part of the embodiment shown in FIG. 4, FIG. 6 is a sectional view showing a part of the embodiment shown in FIG. 4, FIG. 7 is an explanatory diagram of the operation of the embodiment shown in FIG. 4, and FIG. FIG. 8 is an operation explanatory diagram showing a side view of FIG. 7; 1...Base plate, 1c...Guide groove, 1
d...First elongated hole part, 1e... Second elongated hole part, 2
...Open lever, 5...Bell crank, 5c
...Recess, 7...Locking lever, 9,16...
...Pin, 11...Body, 15...Open lift lever, 17...Pole, 20...Child-proof lever, 23...Sliding pin.

Claims (1)

[Claims for Utility Model Registration] A base plate having a base portion and a side portion bent approximately perpendicular to the base portion, and pivotably mounted on the side portion of the base plate in a plane approximately parallel to the side portion. a bell crank, and an open lever pivotably attached to the base of the base plate so as to be rotatable in a plane substantially parallel to the base, and having an arm that is pushed by the arm of the bell crank, In the door lock device which rotates the open lever and obtains an unlocked state by rotating the bell crank, the door lock device includes a first elongated hole extending in the direction of movement of the arm of the open lever; a base plate having a guide groove bored in the side thereof, the base plate having a second elongated hole continuous with the hole and extending in a direction substantially perpendicular to the first elongated hole; and a first length of the base plate. an open lever having an arm movably inserted into the hole; a portion of the guide groove of the base plate closer to the second elongated hole than the arm of the open lever;
When the sliding pin is movably engaged in the guide groove and the sliding pin is located near a continuous point between the first and second elongated holes of the base plate, an arm portion is attached to the sliding pin. a bell crank that is in abutment and capable of pushing the sliding pin toward the arm side of the open lever; The arm portion is pivotably mounted to be rotatable in a plane substantially parallel to the arm portion, and an elongated hole that substantially overlaps the first elongated hole portion is bored in the arm portion, and the sliding pin is inserted into the elongated hole. and a childproof lever that is movably engaged in the elongated hole and moves the sliding pin to a position above the second elongated hole where it does not come into contact with the bell crank. Door lock device.