JP2017210762A - Door lock device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door lock device for an automobile which has a light-weight structure, and which can surely prevent a door from opening during collision of the automobile.SOLUTION: There is provided a door lock device for an automobile, which releases lock of a door latch by movement of an open lever 3 by an opening operation of a door outside handle. The open lever 3 is divided into two lever parts which are a first lever part 5 on the door outside handle side and a second lever part 6 on the door latch side. A division end part 5A of the first lever part 5 and a division end part 6A of the second lever part 6 are connected via a connection mechanism 7 capable of releasing the connection by an inertial force F2 generated during collision of the automobile.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an automobile door lock device.

At the time of a side collision of an automobile, an inertial force in the direction of opening the handle is applied to the door outside handle by an impact applied to the vehicle body from the side. When the door outside handle is opened by this inertial force, the open lever is moved to the unlocking side, the door latch is unlocked, and the door is opened.
Therefore, as disclosed in Patent Document 1, a technique has been developed in which a door opening prevention mechanism is provided in a door handle structure of an automobile.
As shown in FIG. 3 of Patent Document 1, the door opening prevention mechanism 40 includes a lever member 41 and a biasing member that biases the lever member 41 toward the set position. The lever member 41 is assembled to the coupling lever 33 above the coupling pin 34 (the coupling pin 34 is assembled to the outside open lever 61), and can be moved from the set position to the retracted position in the vehicle outward direction. It is.
The lever member 41 is held in the set position in a state where the inertial force is not applied, and operates in the door opening direction from the connecting lever 33 to the connecting pin 34 through the lever member 41 in accordance with the door opening operation of the outer handle 20. It can be transmitted.
The lever member 41 is moved from the set position to the retracted position prior to the door opening operation of the outer handle 20 in the state where the inertial force is applied, and is connected to the connecting pin 33 from the connecting lever 33 accompanying the door opening operation of the outer handle 20. The door opening direction operation to 34 is disabled to be transmitted.

JP 2013-14988 A

However, according to said structure, components, such as a connection lever and a lever member, were needed, and components enlarged and the weight increased.
Among the conventional techniques, there is a technique for preventing the door from opening by using a lot of strength members and reducing the inertial force at the time of collision. However, even in such a technique, there is a problem that the weight increases. .
An object of the present invention is to provide an automobile door lock device that has a lightweight structure and can reliably prevent the door from being opened when the automobile collides.

The feature of the present invention is that
A door lock device for an automobile in which an open lever is moved by unlocking a door outside handle to unlock the door latch,
The open lever is divided into two parts, a first lever part on the door outside handle side and a second lever part on the door latch side,
The split end portion of the first lever portion and the split end portion of the second lever portion are connected to each other via a connecting mechanism that can be disconnected by an inertia force generated at the time of a car collision.

When the automobile collides with another object, the connection between the divided end portion of the first lever portion and the divided end portion of the second lever portion is released by the inertial force generated at the time of the collision. Therefore, even if the door outside handle is opened by the inertia force applied to the door outside handle at the time of collision, the unlocking force from the door outside handle is not transmitted to the second lever portion on the door latch side, and the door latch is unlocked. There is nothing to do. Thereby, the locked state of a door latch can be maintained and the opening of the door at the time of the collision of a motor vehicle can be prevented.
In addition, according to the present invention, it is possible to reduce the size of the component and avoid an increase in weight. Therefore, it is possible to provide an automobile door lock device that has a lightweight structure and can reliably prevent door opening at the time of automobile collision.

A view of the door outside handle provided on the door and the surrounding structure as seen from the outside of the passenger compartment AA sectional view of FIG. 1 (door closed state) Expanded sectional view of the open lever and surrounding structure (normal) Expanded cross-sectional view of the open lever and surrounding structure (when acceleration toward the outside of the passenger compartment occurs) AA sectional view of FIG. 1 (at the time of normal door opening operation) 1 is a cross-sectional view taken along the line AA in FIG. It is a figure which shows the structure which provided the 3rd biasing means in the connection mechanism, (a) is sectional drawing (b) which shows the state which the 1st lever part separated from the 2nd lever part, The 1st lever Sectional view (c) showing a state in which the portion is in the middle of returning to a position connectable to the second lever portion is a state in which the first lever portion is returned to and connected to a position connectable to the second lever portion. Cross section showing

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows an automobile door 10 (which is a side door) provided with a door handle 2 (corresponding to a door outside handle) that is long in the door front-rear direction (vehicle front-rear direction). The door handle 2 is supported by the door outer panel 8 such that the front end side (the end of the vehicle front side Fr) is swingable about a vertical axis along the vertical direction, and can be swingably opened and closed about the vertical axis. It is configured. The door outer panel 8 positioned on the back side of the periphery of the door handle 2 is formed with a recess 8U into which an operator's fingers enter.

  As shown in FIGS. 1 and 2, a handle base 9 is fixed to a door outer panel 8 on the rear end side (end of the vehicle rear side Rr) of the door handle 2. Reference numeral 28 in FIG. 2 denotes a door inner panel. The handle base 9 includes a pair of front and rear support walls (not shown) projecting toward the vehicle interior side W1.

  Then, a substantially U-shaped crank 11 (a bell crank) in a cross section viewed from the vehicle front side Fr is supported by the pair of front and rear support walls so as to be swingable around the first axis O1 along the vehicle front-rear direction. Has been. The crank 11 is biased by a crank spring (not shown) counterclockwise (in a direction in which a rod 12 described later rises) in a cross section viewed from the vehicle front side Fr.

  An annular portion 13 having a rectangular shape in plan view protrudes from the rear side of the rear end portion of the door handle 2 toward the vehicle interior side W1. The first swinging end portion 11 </ b> A of the crank 11 on the front end side in the biasing direction of the crank spring is inserted into the hollow portion of the annular portion 13 from above. Further, a pressing portion 13T that presses the first swing end portion 11A from the vehicle interior side W1 toward the vehicle interior outside W2 in accordance with the opening operation of the door handle 2 by the operator is provided in the vehicle of the annular portion 13. It is comprised by the edge part wall of the room inner side W1.

  Further, a rod 12 that links the second swinging end portion 11B of the crank 11 on the near side in the biasing direction of the crank spring and the door latch provided in the door lock device 1 below the door handle 2 is substantially vertically moved. It is provided along the direction. The upper end portion of the rod 12 is connected to the second swinging end portion 11B of the crank 11 so as to be rotatable around the second axis O2 along the vehicle longitudinal direction. An open lever 3 is interposed between the lower end of the rod 12 and the door latch. The lower end of the rod 12 is fixed to the open lever 3. As shown in FIG. 3, the open lever 3 is supported by the support wall portion 18 of the door lock device 1 so as to be swingable around the third axis O <b> 3 along the vehicle longitudinal direction.

  As shown in FIG. 5, when the operator opens the door handle 2 toward the vehicle interior outside W2, the pressing portion 13T of the annular portion 13 moves the first swinging end portion 11A of the crank 11 to the vehicle interior outside W2. Press. As a result, the crank 11 swings around the first axis O1 against the urging force of the crank spring, and the second swing end portion 11B of the crank 11 swings downward. Then, the rod 12 is pushed downward by the second swinging end portion 11B and lowered to swing the open lever 3 downward. The open lever 3 swings around the third axis O3 counterclockwise in a cross section viewed from the vehicle front side Fr. As a result, the door latch is unlocked. Thus, the opening lever 3 is moved by the opening operation of the door handle 2, and the door latch is unlocked.

  When the opening operation of the door handle 2 is released, the crank 11 swings counterclockwise by the urging force of the crank spring, and the rod 12 rises. Along with this movement, the first swinging end portion 11A of the crank 11 presses the pressing portion 13T against the vehicle interior side W1, and the door handle 2 is closed and moved. Further, the open lever 3 swings clockwise around the third axis O3, and the door latch is locked.

[Structure of door lock device 1]
As shown in FIGS. 1 and 2, a door lock device 1 for an automobile according to the present invention is a device for unlocking a door latch (not shown) by moving an open lever 3 by an opening operation of a door handle 2. It is a device that can reliably prevent the door from being opened in the event of a car collision.

  As shown in FIGS. 2 to 4, the open lever 3 is divided into a first lever portion 5 on the door handle 2 side and a second lever portion 6 on the door latch side. Then, the split end portion 5A of the first lever portion 5 and the split end portion of the second lever portion 6 are connected via a connecting mechanism 7 that can be released by inertia force F2 (see FIGS. 4 and 6) generated when the vehicle collides. 6A is connected.

  The idea of the present invention is that the split levers of the first lever portion 5 and the second lever portion 6 of the open lever 3 are divided so that the unlocking force from the door handle 2 that is opened and operated in the event of a car collision is not transmitted to the door latch. The connection between the parts 5A and 6A is to be released by the inertial force F2.

  As shown in FIGS. 4 and 6, the connection between the split end portion 5 </ b> A of the first lever portion 5 and the split end portion 6 </ b> A of the second lever portion 6 is released by the inertial force F <b> 2 generated at the time of a car collision. Therefore, even if the door handle 2 is opened by the inertial force F1 applied to the door handle 2 (see FIG. 6), the unlocking force from the door handle 2 is not transmitted to the second lever portion 6 on the door latch side, and the door latch is locked. It will not be released. Thereby, the locked state of a door latch can be maintained and the opening of the door 10 at the time of the collision of a motor vehicle can be prevented. Further, the parts can be miniaturized, and an increase in weight can be avoided. Therefore, it is possible to provide a vehicle door lock device 1 that has a lightweight structure and can reliably prevent the door from being opened when the vehicle collides.

Next, embodiments of the present invention will be described with reference to the drawings.
[One aspect of configuration of open lever 3]
The open lever 3 is preferably configured as follows.
As shown in FIG. 3, the connecting mechanism 7 of the open lever 3 includes a connecting member 20 that can be interposed between the split end portion 5 </ b> A of the first lever portion 5 and the split end portion 6 </ b> A of the second lever portion 6, and both split end portions. And connecting member support portions 21 and 22 provided on 5A and 6B.

  The connection member support portions 21 and 22 are connected to each other with the connection member 20 interposed between the two divided end portions 5A and 6A (see FIG. 3), and a connection release state positioned at the divided end portion 5A of the first lever portion 5 (see FIG. 3). (See FIG. 4). Further, a first biasing means 31 that biases the connecting member 20 toward the connected state is provided in the connecting mechanism 7.

  As shown in FIGS. 3 and 5, during normal times (when the vehicle is not colliding), the connecting member 20 is urged by the first urging means 31 so as not to move with respect to the linking member support portions 21 and 22. The connected state is set. In this connected state, the unlocking force transmitted from the door handle 2 to the first lever portion 5 can be transmitted to the second lever portion 6 via the connecting member 21, and the door latch can be unlocked.

  At the time of a car collision, the urging force of the first urging means 31 is set so that the linking member 20 moves inertially with a predetermined acceleration relative to the linking member support portions 21 and 22. By setting the urging force in this way, the divided end portion of the first lever portion 5 resists the urging force of the first urging means 31 by the inertia force F2 generated in the event of a car collision. It can be located in 5A and it can be in the said connection cancellation | release state.

  In this disengaged state, the first lever portion 5 and the second lever portion 6 move separately, and even if the door handle 2 opens and operates, the first lever portion 5 is swung. That is, the unlocking force from the door handle 2 is not transmitted to the second lever portion 6 on the door latch side, so that the door latch is not unlocked, and the door 10 can be prevented from being opened at the time of a car collision.

  In this configuration, by tuning the urging force of the first urging means 31, the connecting member 20 can be operated accurately, and malfunction of the connecting member 20 can be prevented.

[One Embodiment of Structure of Connecting Member 20 and Connecting Member Supports 21 and 22]
As shown in FIGS. 3 and 4, the connecting member 20 is a pin. Further, the connecting member support portion 21 on the first lever portion 5 side (hereinafter referred to as “first connecting member support portion 21”) is a first pin that opens at the end face of the divided end portion 5 </ b> A of the first lever portion 5. It is a hole. Further, the connecting member support portion 22 (hereinafter referred to as “second connecting member support portion 22”) on the second lever portion 6 side is a second pin hole that opens in the end face of the divided end portion 6A of the second lever portion 6. It is. The first pin hole is formed deeper than the second pin hole.

  And the pin which is the connection member 20 is slidably fitted in the 1st pin hole which is the 1st connection member support part 21, and the 2nd pin hole which is the 2nd connection member support part 22. The first urging means 31 is a spring interposed between the bottom surface of the first pin hole and one end surface of the pin facing the bottom surface. The other end surface of the connecting member 20 urged by the first urging means 31 contacts the bottom surface of the second pin hole. As a result, the split end portions 5A and 6A are connected to each other.

  With this configuration, the structure of the connecting member 20, the first connecting member support portion 21, and the second connecting member support portion 22 can be simplified, and these three can be reduced in size and weight. Then, the connecting member 20 can be smoothly and accurately slid relative to the first connecting member support portion 21 and the second connecting member support portion 22, and malfunction of the connecting member 20 can be prevented more reliably. .

[Another aspect of the structure of the connecting member 20 and the connecting member support portions 21 and 22]
Although not shown, instead of the above structure, the connecting member 20 is constituted by a ring member, and the first connecting member supporting portion 21 and the second connecting member supporting portion 22 are externally fitted so that the connecting member 20 is slidably movable. You may comprise by the outer peripheral part of both the division | segmentation edge parts 5A and 6A to perform.
In this case, the first urging means 31 is constituted by a spring that is fitted around the split end portion 5A of the first lever portion 5, and is formed to project from the split end portion 5A of the first lever portion 5. And a spring between the one end surface of the connecting member 20. Then, a flange-shaped receiving portion that receives the other end surface of the connecting member 20 is formed to protrude from the divided end portion 6 </ b> A of the second lever portion 6.

  With this configuration, the structure of the connecting member 20, the first connecting member support portion 21, and the second connecting member support portion 22 can be simplified, and these three can be reduced in size and weight. Then, the connecting member 20 can be smoothly and accurately slid relative to the first connecting member support portion 21 and the second connecting member support portion 22, and malfunction of the connecting member 20 can be prevented more reliably. .

[Structure in which the second urging means 32 is provided in the coupling mechanism 7]
As shown in FIGS. 3 and 4, the second urging means for urging the first lever portion 5 released from the connection with the second lever portion 6 in a direction (downward) away from the second lever portion 6. A configuration in which 32 is provided in the coupling mechanism 7 can also be adopted.

  Thereby, the connection between the split end portions 5A and 6A of the first lever portion 5 and the second lever portion 6 can be reliably released, and the opening of the door 10 can be reliably prevented.

  Specifically, the vertical wall 25 extends downward from the split end portion 6A of the second lever portion 6, and the horizontal wall 26 extends from the lower end portion of the vertical wall 25 toward the lower side of the split end portion 5A of the first lever portion 5. Yes. The second urging means 32 is provided between the lateral wall 26 and the divided end portion 5 </ b> A of the first lever portion 5. The 2nd biasing means 32 consists of a spring.

  The vertical wall 25 guides the first lever portion 5 that moves downward by receiving the unlocking force from the door handle 2 side. That is, the other end surface of the connecting member 20 (pin) protruding by the biasing force of the first biasing means 31 from the split end portion 5A of the first lever portion 5 in the disconnected state slides on the guide surface of the vertical wall 25. To do. In this way, the vertical wall 25 guides the first lever portion 5.

[Structure in which the third urging means 33 is provided in the coupling mechanism 7 (see FIGS. 7A to 7C)]
Instead of the above structure in which the second urging means 32 is provided in the coupling mechanism 7, the following structure may be adopted. As described above, the door handle 2 opens and operates by the inertial force F1 (see FIG. 6) generated when the automobile collides. And the 1st lever part 5 of a connection cancellation | release state receives the unlocking force from this door handle 2, and leaves | separates from the 2nd lever part 6 (refer Fig.7 (a)). The connection mechanism 7 is provided with third urging means 33 that urges the first lever portion 5 in the disconnected state to return to a position where it can be connected to the second lever portion 6.

  As shown in FIGS. 7A to 7B, after the inertial forces F1 and F2 (see FIG. 6) no longer act on the door handle 2 and the connecting member 20, the first lever portion 5 is in the second state. It returns to a position where it can be connected to the lever portion 6, and the end faces of both split end portions 5A, 6A face each other. And the one end part side of the connection member 20 penetrates into the 2nd connection member support part 22 with the urging | biasing force of the 1st urging means 31, and the connection state in which the connection member 20 was interposed over both the division | segmentation edge parts 5A and 6A. Thus, the door 10 can be opened and closed again.

  The third urging means 33 is formed of a spring and is provided between the lateral wall 26 and the divided end portion 5 </ b> A of the first lever portion 5. The vertical wall 25 not only guides the first lever portion 5 that moves by receiving the unlocking force from the door handle 2 side, but also returns to a position where it can be connected to the second lever portion 6 (return rise). The first lever portion 5 is also guided. That is, the other end surface of the connecting member 20 (pin) protruding by the biasing force of the first biasing means 31 from the split end portion 5A of the first lever portion 5 in the disconnected state slides on the guide surface of the vertical wall 25. To do. In this way, the vertical wall 25 guides the first lever portion 5.

  As mentioned above, although embodiment and the Example of this invention were described, the said embodiment and Example are shown as an example and are not intending limiting the range of invention.

1 Door lock device 2 Door outside handle (door handle)
3 Open lever 5 First lever 5A Split end (split end of the first lever)
6 Second lever portion 6A Split end (split end of second lever portion)
7 connection mechanism 20 connection member 21 connection member support part (connection member support part on the first lever part side)
22 connecting member support portion (connecting member support portion on the second lever portion side)
31 First urging means 32 Second urging means 33 Third urging means F1 Inertial force (inertial force applied to door handle)
F2 inertial force (inertial force applied to the open lever)

Claims (4)

A door lock device for an automobile in which an open lever is moved by unlocking a door outside handle to unlock the door latch,
The open lever is divided into two parts, a first lever part on the door outside handle side and a second lever part on the door latch side,
An automobile door lock device in which a divided end portion of the first lever portion and a divided end portion of the second lever portion are connected via a connecting mechanism that can be disconnected by an inertia force generated when the vehicle collides. The coupling mechanism is
A connecting member that can be interposed between the split end portion of the first lever portion and the split end portion of the second lever portion;
A connecting member support provided at both split ends,
The connecting member support portion supports the connecting member movably in a connected state interposed between the two divided end portions and a connection released state located at the divided end portion of the first lever portion,
The automobile door lock device according to claim 1, wherein first urging means for urging the coupling member toward the coupled state is provided in the coupling mechanism.   3. The automobile according to claim 1, wherein second urging means is provided to urge the first lever part released from the connection with the second lever part in a direction away from the second lever part. Door lock device.   The unlocking force is received from the door outside handle that is opened by the inertia force, and the unlocked first lever portion separated from the second lever portion by the unlocking force is moved with respect to the second lever portion. The vehicle door lock device according to claim 1 or 2, further comprising a third urging means for urging and returning to a connectable position.

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