JPH0131722Y2 - - 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. The present invention relates to a door lock device including a canceling mechanism that returns a locking lever to an unlocked position via an open link when the locking lever rotates.

In the conventional door lock device of this type, as shown in FIG. 1, the center pin a has many parts,
Namely, base plate (hole b), pole c, body (hole d), lock base sub-plate (hole e)
The pin g, which is caulked to the open lift lever f through the center pin and caulked to other parts of the open lift lever f, is configured to rotate integrally with the center pin a around the center pin a. There is. For this reason, unless the precision of each component was high, the pole c and the open lift lever f could not operate smoothly. For example, if the hole e in the base sub-plate, the hole b in the base plate, and the hole d in the body do not match, the center pin a will be twisted and become difficult to rotate, and in the worst case, the pole c or the open lift lever f will There were times when it wouldn't work. For this reason, in the past, each part had to be manufactured with very strict tolerances, resulting in an increase in the cost of the locking device as a product.

The present invention was developed in view of the above circumstances, and its purpose is to provide a door lock device that allows the pole to rotate smoothly, is low cost, and has improved performance. .

Hereinafter, embodiments of the present invention will be described based on the drawings.

In Figures 2 to 6, 1 is a base sub-plate, 2 is a body made of synthetic resin material, and 3 is a base plate, which are integrally connected by countersunk machine screws 4 screwed in from the base plate 3 side. Laminated. An open lever 5 is pivotally mounted on the base sub-plate 1 by a pin 6, and the open lever 5 is supported by a spring 7 hooked between the hook portion 5a and the base sub-plate 1. , is biased to rotate clockwise. Reference numeral 8 designates an open link which is pivotally connected to the arm portion 5b of the open lever 5 by a pin 9, and has a bent portion 8a projecting to the left in FIG. It has a bent portion 8b bent toward the body 2 side, and an elongated hole 8c is bored in the tip side portion. Reference numeral 10 denotes a substantially L-shaped bell crank whose middle corner is pivoted to the side 1a of the base sub-plate 1 by a pin 11, and one end 10a is attached to the arm 5c of the open lever 5 on the lower side in FIG. It is in contact with the A locking lever 12 is pivotally connected to the base sub-plate 1 by a pin 13, and a pin 12b implanted in the arm portion 12a is inserted into an elongated hole 8c of the open link 8. or,
The bent arm portion 12c restricts the rotation of the locking lever 12, and this bent arm portion 12c serves as a stopper 1 formed at the end of the base sub-plate 1.
The locking lever 12 rotates within the range in which it contacts b and 1c. That is, the locking lever 12 rotates within a range in which the bending arm 12c moves between the position shown by the solid line in FIG. 2 (unlocked position) and the position shown by the two-dot chain line (locked position). However, this rotational movement is a so-called snap action due to the action of a spring 14 hooked between the arm portion 12d and the base sub-plate 1. Therefore, the bent arm 1 of the locking lever 12
2c does not stop between the position shown by the solid line and the position shown by the two-dot chain line, and is urged to rotate in either direction in this intermediate position,
Either the position shown by the solid line or the position shown by the two-dot chain line is selected. 15 is a roughly L-shaped open lift lever,
It has a bent part 15a at one end and an extending part 15b at the other end.
A circular hole 1 is provided in the middle of the bent portion 15a.
5c, and a long hole 15d extending in the direction of the circular hole 15c is bored at the corner (see FIG. 5).
A pin 16 fixed to the base sub-plate 1 is inserted into this elongated hole 15d, and the open lift lever 15 can rotate around its corner.
At the same time, it can also slide in the longitudinal direction of the elongated hole 15d. Further, the bent portion 15a of the open lift lever 15 is configured so that it can come into contact with the bent portion 8b when the open link 8 moves from the position shown in FIG. 2 toward the locking lever 12. The movement of the open link 8 after contact causes the open lift lever 15 to rotate in the counterclockwise direction in FIG. 2 about the pin 16. Further, the extending portion 15b is arranged to be close to the bent portion 8a when the open link 8 comes to the position shown by the two-dot chain line. Furthermore, the circular hole 15c has a pin that passes through the elongated hole 1d of the base sub-plate 1 and the elongated hole (see FIG. 6) formed in the wall surface of the body 2 in the same shape as the elongated hole 1d and reaches inside the body 2. 17 is caulked. Also, as is clear from Figure 4,
Inside the body 2, there is a latch 19 pivotally connected to the inner wall of the body 2 by a pin 18, a spring 20 that biases the latch 19 to rotate in the disengagement direction via a pin 19c implanted in the latch 19, and a base sub-assembly. A pawl 21 rotatably supported by a center pin 25 caulked to the plate 1, a spring 22 that urges the pawl 21 to rotate toward the latch 19, and a backlash of the striker 23 when it is in mesh with the latch 19. A slide block 24 and the like is provided to take the position. The space between the body 2 and the base plate 3 in which these are housed is formed to be slightly deeper than the thickness of the pole 21, and the base plate 3 receives and supports the center pin 25 through its through hole. A circular hole 21 is provided in the middle part of the pole 21.
A is bored into the circular hole 21a, and the tip of the pin 17 implanted in the open lift lever 15 is loosely inserted into the circular hole 21a. As a result, as will be described later, the pawl 21 is moved to the open lift lever 15.
The rotation range is the same as the open lift lever 15, and the rotation range is the same as the open lift lever 15.
is limited to the range where it contacts the inner wall of the elongated hole 1d.
Note that the arm portion 10b of the bell crank 10 is a rod 26.
The extension of the pin 9 is connected by a rod 27 to an outside handle (not shown) of the door. Further, the arm portion 12d of the locking lever 12 is connected to a knob (not shown) by a rod 28, and the arm portion 12e is connected to a key cylinder (not shown) by a key rod 29.

Next, the operation will be explained.

Figures 2 to 6 show the unlocked state when the door is closed, but if you want to open the door in this state from inside the vehicle, operate the inside handle and turn the bell crank 10 counterclockwise in Figure 3. When the arm portion 5c of the open lever 5 is moved upward in FIG. 2 at one end 10a, the open lever 5 is rotated counterclockwise in FIG. The open link 8 connected to the portion 5b by the pin 9 is pushed down. This push-down action opens the link 8.
The bent portion 8b pushes the bent portion 15a of the open lift lever 15 to rotate the open lift lever 15 in the counterclockwise direction in FIG. 2 (because the pin 17 is configured to rotate around the center pin 25, The open lift lever 15 performs some sliding movement at this time). This open lift lever 1
As the pin 17 rotates in the counterclockwise direction in FIG. 4 about the center pin 25 as a fulcrum, the pawl 21 also rotates in the counterclockwise direction in FIG. 4 about the center pin 25. For this reason, the retaining pawl 19a of the latch 19 and the pawl 21
is disengaged from the rotating tip of the latch 19, the latch 19 becomes rotatable, and rotates clockwise in FIG. 4 under the action of the spring 20, and the door lock body moves relative to the striker 23 to open the door. state.
In order to open the door, which is in the unlocked state when the door is closed, from outside the vehicle, the outside handle may be operated to move the open link 8 downward in FIG. 2. As a result, the door can be opened with the same operation as when opening the door from inside the vehicle.

If you lock an unlocked door from inside the vehicle,
Since the rod 28 is pushed down through the knob, the locking lever 12 rotates clockwise in FIG. 2, and the open link 8 moves to the position indicated by the two-dot chain line in FIG. The same applies to the operation of the key rod from outside the vehicle.

In such a locked state, even if you pull the outside handle and push down the rod 27, the open link 8 will rotate to the position shown by the two-dot chain line with the pin 9 as a fulcrum, so the tip of the open link 8 will not bend. The part 8b no longer makes contact with the bent part 15a of the open lift lever 15, and the elongated hole 8c simply slides on the pin 12b of the locking lever 12 (missing state), making it impossible to maintain the locked state. can.

In order to obtain the closed state again after opening the door, it is sufficient to press the door lock device main body against the striker 23.
That is, latch 19 and pole 2 as shown in FIG.
The latch 19 may be rotated against the spring 20 until the latch 19 is engaged. In this case, not only when the open link 8 is in the position shown by the solid line when the door starts closing, but also when it is in the position shown by the two-dot chain line, the door becomes unlocked after closing. The reason for this is that even if it is in the position shown by the two-dot chain line, in order to move to the position shown in Figure 4, it is necessary to
1 must once take a position in which it has rotated further counterclockwise than the position shown in FIG.
This is because it comes into contact with the bent portion 8a of the open link 8 and pushes it to the left in FIG. 2, returning the open link 8 to the position shown by the solid line (this is called a canceling action). However, if the open link 8 located at the position indicated by the two-dot chain line is pushed down downward in FIG. 2 by operating the outside handle and the door is closed in this state, a so-called keyless lock can be performed. When operated as described above (closing the door), even if the bent portion 15b of the open lift lever 15 rotates counterclockwise in FIG. 2, the bent portion 8a of the open link 8 escapes downward. This is because the open link 8 is not pushed to the left, and therefore, when the outside handle is released after the door is closed, it remains in the position shown by the two-dot chain line and the locked state is ensured.

In this way, the function of the door lock device is not hindered in any way even if the center pin 25 does not pass through a large number of parts as in the conventional case, and even if it is in a non-rotating state. This is because the open lift lever 15 can be rotated and slid.

As explained above, in the present invention, the pole is configured to be able to rotate using the fixed center pin as a fulcrum, and the open lift lever is configured to be able to rotate using the other pin as a fulcrum, so even if the position of the hole for passing the center pin is Since the center pin does not rotate even if it does not align correctly and becomes twisted, the pole and open lift lever can be rotated smoothly regardless of the twisting.

The number of parts that pass through the center pin has been reduced, and the structure has been designed so that the twisting mentioned above does not affect the rotation of the pole, so there is no need to manufacture parts with strict tolerances, and the locking device can be manufactured at low cost. .

The pin that is the center of rotation of the open lift lever and the center pin that rotates the pole can be set independently of each other, so it is possible to select a position with good mechanical conditions, and rotate the pole. It is possible to improve performance by reducing operating force.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is a front view of the door lock device of the present invention, Fig. 3 is a right side view of Fig. 2, Fig. 4 is a rear view of Fig. 2, and Fig. 5 is a front view of the door lock device of the present invention. FIG. 6 is an exploded perspective view showing the main parts of the door lock device of the present invention, and FIG. 6 is a sectional view taken along the line AA in FIG. 2. 8...Open link, 12...Locking lever, 15...Open lift lever, 15b...
...Extending portion, 16...Pin, 21...Pole, 25
...Centapin.

Claims (1)

[Claims for Utility Model Registration] The rotation of the pole 21 when the door is closed causes the open lift lever 15 on the opposite side of the base sub-plate 1 from the side on which the pole is disposed to rotate, and further the open lift lever 15 In the door lock device, the pawl 21 is rotatably supported by a center pin 25 fixed to the base sub-plate 1. At the same time, the open lift lever 15 is rotatably and slidably supported by a pin 16 fixed to the base sub-plate 1;
A pin 17 is fixed to the open lift lever 15, and the pin 17 is passed through the base sub-plate 1 and loosely inserted into the circular hole of the pole 21 so that the open lift lever 15 and the open lift lever 15 rotate together. door lock device.