JPH053650Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a door lock device for an automobile.

(Prior Art) A conventional door lock device according to the present invention will be explained with reference to FIGS. 6 to 8.

A is an open lever that releases the latch of the door lock body (not shown), B is an outside lever linked to the outside door handle, and C is an outside lever that is linked to the outside door handle.
is an inside lever linked to the inside door handle, and D is a knob lever linked to the lock/unlock knob.

The knob lever D is configured as a seesaw mechanism with an overcenter operation of an overcenter spring E, and stable points on both sides of the seesaw mechanism are regulated by stoppers F.

A sub-lever G is linked between the knob lever D and the outside lever B, and the sub-lever G is
It is provided with an engaging hook part _g1 that effectively transmits the door opening operation of the outside door handle to the open lever A when the knob lever D is in one of the stable positions.

The inside lever C contacts the outside lever B and then operates the sublever G when the inside door handle is operated to open the door.

Knob lever D and sub lever G are sub lever G
is in the other stable position, release the engaging hook _g1 of the sub-lever G from the position of the open lever A,
It constitutes a mechanism that disables the opening operation of the inside or outside door handle.

As shown in Fig. 8, in this missed swing mechanism, the dead center P _d on the connecting part between the knob lever D and the sub-lever G is
Stable position P ₁ when missing and unlockable stable position P ₂
Therefore, the deflection angles θ ₁ , θ 2 from the dead center P _d of the sub-lever G to both stable positions _{P 1} , P ₂
are almost equal.

The hook depth l of the engaging hook g ₁ of the sub-lever G is approximately equal to the swing distance L of the position of the engaging hook g ₁ relative to the deflection angle θ ₁ in order to maximize the margin during engagement. It's summery.

However, in the above-mentioned conventional locking device, when the knob lever D is in the stable position _P1 , the outside lever B is operated by operating the outside door handle or the inside door handle from the knob locking position in the missed state. When the sub-lever G misses its swing, when the knob lever D is continuously operated to reach the stable position _P2 , the side surface _g2 of the engagement hook _g1 of the sub-lever G comes into contact with the side surface _A1 of the open lever A. The knob lever D temporarily stops there.

At that time, if the depth l of the engaging hook _g1 is the length L of the margin limit, the stopping point of the knob lever D is the dead center.
Therefore, the knob lever _D will stop at a position where no rotational force of the over-center spring E is generated.

(Problems to be Solved by the Present Invention) As described above, the conventional door lock device has a timing difference between manual operation of the locking/unlocking knob or electric operation of the knob. If the door opening operation is performed first, an intermediate swing mechanism for releasing the latch of the door lock body by operating the door handle will be activated.
The system may stop in an abnormal state and become unable to open the door by operating the door handle.

The cause of such an abnormal missed swing state is that the knob lever, which controls the door handle operation to be effective or ineffective with respect to the release of the latch of the door lock body, stops midway.

This knob lever is a seesaw mechanism with an over-center spring that has stable positions in the effective and ineffective positions for door handle operation, so as to avoid the inconvenience of stopping midway.
Even with such a seesaw mechanism, if it is forcibly stopped at or near the dead center where the overcenter spring action is at its weakest, it may stop there due to static frictional resistance of the rotating parts, etc. There is.

In the conventional door lock device, when the lock/unlock knob and the door handle are operated at the same time at the wrong timing, the knob lever is forcibly stopped at or near the dead center, which causes the above-mentioned problem.

In particular, door lock devices for rear doors are required to have a very compact structure depending on the surroundings of their mounting parts.For this reason, with conventional seesaw mechanisms, the stopping point of the knob lever, which causes inconvenience, is significantly offset from the dead center. Furthermore, it has been difficult to increase the engagement margin of the missed swing mechanism required for the knob lever without increasing the swing angle from one stable point to another stable point.

The present invention does not increase the swing angle of the seesaw mechanism of the knob lever, moves the point that causes inconvenience far from the dead center, allows the once stopped knob lever to rotate to a stable point, and is able to rotate the knob lever once it has stopped to a stable point. To provide a door lock device in which a locking mechanism is provided with an engagement margin of .

That is, in comparison with the conventional door lock device described above, at the temporary stopping point of the knob lever D,
The rotational force of the over-center spring E is sufficiently generated, and the deflection angle (θ ₁ +θ ₂ ) at which the sub-lever G reaches both stable points is not made larger than before, and the margin at the time of engagement is increased. The purpose is to make the depth l of the engaging hook part _g1 equal to or greater than the conventional one.

(Means for Solving the Problems) The present invention provides a door lock device equipped with an idle swing mechanism that enables or disables a latch release operation by operating a door handle, on the outer surface of an open lever for releasing a door lock body latch mechanism. a knob lever that has a center of rotation on or near the extension and is biased by an over-center spring and controls the miss mechanism to either a latch release valid position or a latch release invalid position; A sub-lever of the missing swing mechanism, in which the engaging hook portion is positioned on the rotating surface of the open lever when in the effective position and can be engaged with a key point of the open lever; Then, the inside or outside door handle is connected to one end of the sub-lever of the missing swing mechanism, and is rotated by operating either the inside or outside door handle to move the sub-lever of the missing swing mechanism toward the open lever. A side lever, and a connecting pin rotatably and slidably connects the other end of the sub-lever of the idle swing mechanism and key points of the knob lever, and the connecting pin of the knob lever is configured such that when the knob lever is in an effective unlatching position, When the knob lever is closest to the line connecting the center of rotation of the knob lever and the center connecting the sub-lever to the inside or outside lever, and when the knob lever is in the unlatched position, it is furthest from the line connecting the two centers, and the knob lever is overcenter. When it is at its dead center, where it is not biased by the spring, the line that connects the center of the sub-lever connecting to the inside or outside lever when the door handle is not operated and the connecting pin of the knob lever is
The knob lever and the sub-lever are connected in such a way that they are slightly shifted toward the latch release ineffective position from the point where the angle formed by the latch release effective position and the latch release ineffective position is equally divided. .

(Function) In this invention, the line connecting the center of connection between the inside or outside lever connected to the door handle and the sub-lever of the missing swing mechanism and the rotation center of the knob lever is aligned with the outside rotation surface of the open lever. or in parallel and close to each other, and the connecting pin of the knob lever is closest to a line connecting the rotation center of the knob lever and the center of connecting the sub-lever to the inside or outside lever when the knob lever is in the unlatching effective position. , and when the knob lever is in the unlatching disabled position, when the knob lever is farthest from the line connecting the two centers and at the dead center where it is not biased by the over-center spring, inside or outside when the door handle is not operated. The line connecting the center of connecting the sub-lever to the lever and the connecting pin of the knob lever should be slightly shifted toward the latch release disabled position from a point that equally divides the angle formed by the latch release enabled position and the latch release disabled position. By connecting the knob lever and the sub-lever, the swing angle of the sub-lever of the missing swing mechanism from the dead center is made larger on the stable side where latch release is effective than on the other stable side. Even if the side surface of the locking hook part of the mechanism comes into contact with the outer surface of the open lever and the knob lever stops at that position, the latch release becomes effective after the knob lever stops at the dead center. It has moved sufficiently to the stable side,
Therefore, the knob lever does not remain in that position, but can be reliably rotated to a stable position where the latch is effectively released.

(Example) Hereinafter, the present invention will be described in detail based on the specific example diagrams shown in FIGS. 1 to 5.

1 and 2 show one embodiment of the present invention, and FIGS. 3 to 5 show the operating states of the main mechanisms as viewed from the same direction as FIG. 1.

1 is the door lock body, 2 is the door lock body 1
3 is an open lever connected to a pole (not shown) that releases a latch plate (not shown); 3 is a knob lever connected to a door lock/unlock knob (not shown) and a door lock/unlock electric actuator (not shown); 4;
5 is an outside lever connected to an outside door handle (not shown), 5 is an inside lever connected to an inside door handle (not shown), and 6 is a knob lever 3 and an outside lever 4.
7 is an overcenter spring that causes the seesaw mechanism of the knob lever 3 to act as an overcenter spring; 8 is a stopper that determines both stable positions of the seesaw mechanism of the knob lever 3; 9 and 10 are This base plate is bent at right angles to the open lever 2 side with respect to the base plate 11 to which the door lock body 1 is attached.

The base plates 9 and 10 are on the same plane,
The knob lever 3 is attached to the shaft 1 on one base plate 9.
The inside lever 5 is rotatably mounted on the base plate 10 with a shaft 13 so as to be rotatable around the plane of the base plate 10.

A stepped part 14 protruding toward the base plate is formed around the shaft 12 of the knob lever 3, creating a slight gap between the knob lever 3 and the base plate 9, and an overcenter spring 7 is provided in the gap. One end 7a of the over-center spring 7 is inserted into the locking hole 15 of the base plate 9, and the other end 7b is inserted into the locking hole 16 of the knob lever 3.
They are each locked in place.

The locking hole 15 of the base plate 9 is provided on a line connecting the center point of the tip of the stopper 8 provided by extending the base plate 9 and the axis O of the shaft 12.

The locking hole 16 of the knob lever 3 is connected to a pair of abutment pieces 17a and 17b bent toward the stopper 8 side, which determines both stable points of the seesaw mechanism of the knob lever 3, and the axis O.
It is located on the bisector of the angle formed by the line segments connecting the two lines.

In addition, the locking hole 15 is connected to the shaft 12 with respect to the locking hole 16.
When the locking hole 16 is located on the line connecting the locking hole 15 and the axis O, both locking holes 1
The distance between 5 and 16 is the shortest, and this position is the dead center of the seesaw mechanism by the knob lever 3.

The axis O of the shaft 12 is located on or close to the extended surface of the outer surface 2a of the open lever 2, and the rotating surface of the outside lever 4 is located on or close to the extended surface of the outer surface 2a. It is provided.

That is, the axis O, which is the center of rotation of the seesaw mechanism by the knob lever 3, is on the same plane as the rotating surface of the outside lever 4, or is close to that plane.

One end 4a of the outside lever 4 and one end 6a of the sub-lever 6 are engaged on the rotating surface of the outside lever 4.

The other end of the sub-lever 6 is provided with a long hole 6b that guides the movement of the sub-lever 6 toward the open lever 2. This long hole 6b rotates and slides with the locking pin 18 provided on the knob lever 3. They are movably engaged.

When the knob lever 3 is in the unlatching effective position shown in FIG. 5, the connecting pin 18 of the knob lever 3 is closest to the line connecting the rotation center O of the knob lever 3 and the center Q connecting the sub-lever 6 to the inside or outside lever. and when the knob lever 3 is in the latch release disabled position shown in FIG.
When the knob lever 3 is farthest from the line connecting the two centers O and Q and is at the dead center where it is not biased by the over-center spring 7, the sub-lever 6 is placed on the inside or outside lever when the door handle is not operated. The line connecting the connecting center Q and the connecting pin 18 of the knob lever 3 equally divides the angle formed by the latch release valid position and the latch release invalid position, and moves toward the latch release invalid position as shown in FIG. Make it slightly shifted,
The knob lever 3 and the sub-lever 6 are connected.

This sub-lever 6 is provided with an engaging hook portion 6c at a position on the rotating surface of the open lever 2 when the knob lever 3 is in a position where the missed swing mechanism makes the latch release operation effective.

The door lock device constructed as described above operates as follows.

FIG. 3 shows a state in which the knob lever 3 of the seesaw mechanism and the idle swing mechanism using the sub-lever 6 are in the first stable position that disables the door handle latch release operation, and FIG. 4 shows the state shown in FIG. 3. Then, the sub-lever 6 misses its swing, and then the knob lever 3 is rotated to reach the state shown in FIG. The knob lever 3 is shown in a temporarily stopped state, and FIG. 5 shows a state in which it is in a second stable position in which the latch release operation is effective.

In addition, in the figure, the first stable position, the second stable position, and the dead center are the positions of the action points of the over-center spring 7 on the knob lever 3 in sequence P ₁ , P ₂ ,
The position of the center R of the locking pin 18 is indicated by P' ₁ , P' ₂ , and P _{' d in} sequence.

As shown in FIG. 4, the center R of the locking pin 18 when the sub-lever 6 comes into contact with the open lever 2
has sufficiently moved beyond the dead center P′ _d to the second stable position P ₂ .

This is done by offsetting the center R of the locking pin 18 at the second stable position by a required distance from the line connecting the rotation center O of the knob lever 3 and the rotation center Q of the sub-lever 6. The amount of rotation of the sub-lever 6 is no longer linearly proportional to the amount of rotation of the sub-lever 6.
The amount of rotation is compressed and reduced on the first stable position _P'1 side.

Therefore, the position of the dead center with respect to the sub-lever 6
P′ _d is biased from the center of the swing width of the sub-lever 6 toward the first stable position P′ ₁ , and as a result, the swing width of the second stable position P′ ₂ with respect to the dead center P′ _d of the sub-lever 6 is It is wider than that for the first stable position P′ ₁ .

However, as in the conventional case, when the center R of the locking pin is above the dead center, it is better to make each point O, R, and Q in a straight line to more effectively transmit the amount of rotation of the knob lever 3 to the sub-lever 6. can do. but,
At the second stable position P′ ₂ side, the sub-lever 6 requires an engagement margin of the engaging hook portion 6c as a missing swing mechanism as the depth l of the hook portion, and as in the conventional case, the transmission of the rotation angle is not possible. If the rotation is performed symmetrically about a point, the same amount of margin L is allowed on the first stable position _P'1 side, and an unnecessary amount of rotation of the knob lever 3 is required.

Furthermore, by moving point R at the second stable position P' ₂ a little away from the line connecting points O and Q toward the first stable position, the point R can be placed on the line connecting points O and Q. , the side surface 2a of the open lever 2 can be made to coincide with each other, and the unswinging motion of the sub-lever 6 is performed along the side surface of the open lever 2, so that the engaging hook portion 6c is brought into contact with the open lever 2. Later, when the sub-lever 6 returns to its original position, it returns freely without causing any forceful engagement.

(Effects of the present invention) As described above, the present invention provides a seesaw mechanism with over-center operation that has a symmetrical structure with equal swing angles from the dead center to both stable positions, The main part of the mechanism is the lever,
For example, the deflection angles from the dead center of the sub-lever to both stable positions are made unequal to make them asymmetrical, thereby increasing the deflection angle from the dead center to the stable position on the side where the main part engagement means of the missing swing mechanism is provided. , the engagement margin of the engagement means is increased, and the seesaw mechanism is in a stable position where the latch release operation of the door handle operation is disabled, and the sub-lever of the miss-swing mechanism is made to miss-swing, and then the seesaw mechanism is successively moved to the other side. When operated to reach a stable position, the position where the sub-lever comes into contact with the open lever and the seesaw mechanism temporarily stops can easily allow the seesaw mechanism to move sufficiently beyond the dead center toward the desired stable position. .

Furthermore, the swing angle from the fulcrum of the seesaw mechanism to both stable positions does not need to be made larger than before, and there is no need to change the operating stroke of the connecting member to the knob lever of the seesaw mechanism, so design changes have been made to parts other than the door lock device. There is no influence, and the compactness of the door lock device is maintained.

[Brief explanation of the drawing]

1 is a vertical sectional view of a main part of a door lock device showing an embodiment of the present invention, taken along the line - in FIG. 2; FIG. 2 is a longitudinal sectional view taken along the line - in FIG. 1;
3 to 5 are simplified operation diagrams corresponding to FIG. 1, FIG. 3 is a diagram showing the first stable position of the seesaw mechanism and the missed swing mechanism, and FIG.
FIG. 5 is a diagram showing the position where the seesaw mechanism has stopped in a peculiar state. FIG. 5 is a diagram showing the second stable position. FIG.
This figure is a vertical cross-sectional view of the main part of the door lock device of FIG. 6, which is similar to that of FIG. 1, and FIG. 8 is an operational view of the missed swing mechanism, which corresponds to that of FIG. 7. 1... Door lock body, 2... Open lever, 3... Knob lever, 4... Outside lever, 5... Inside lever, 6... Sub lever, 7... Over center spring, 8...
Stopper, 9, 10, 11...Base plate,
12, 13...Shaft, 15, 16...Engagement hole, 18
...Lock pin.

Claims (1)

[Scope of Claim for Utility Model Registration] In a door lock device equipped with a miss-swing mechanism that enables or disables the latch release operation by operating the door handle, a door lock device that is located on or near an extension of the outer surface of an open lever for releasing the latch mechanism of the door lock body. a knob lever having a center of rotation at the center and biased by an over-center spring and controlling the missed swing mechanism to either an effective latch release position or an unlatched release position; when the knob lever is in the effective latch release position; A sub-lever of the missing swing mechanism, in which an engagement hook is located on the rotating surface of the open lever so that it can engage with a key point of the open lever, and a sub-lever of the missed swing mechanism that is located on an extension of the outer surface of the open lever or close to it. an inside or outside lever connected to one end of the door handle, which is rotated by operating either the inside or outside door handle, and moves a sub-lever of the miss mechanism toward the open lever; a connecting pin that rotatably and slidably connects the other end of the sub-lever of the mechanism and key points of the knob lever, and the connecting pin of the knob lever is connected to the center of rotation of the knob lever and the inside side when the knob lever is in an effective unlatching position. Or, when it is closest to the line connecting the center connecting the sub-lever to the outside lever and the knob lever is in the unlatched position, it is farthest from the line connecting the two centers, and the knob lever is biased by the over-center spring. When the door handle is not operated, the line connecting the center connecting the sub-lever to the inside or outside lever and the connecting pin of the knob lever forms an angle between the latch release valid position and the latch release invalid position. A door lock device for an automobile, characterized in that a knob lever and a sub-lever are connected in such a way that they are slightly shifted from the equally divided position toward a latch release disabled position.