Door lock device for vehicle

Abstract

To provide a door lock device for a vehicle that more reliably keeps the door securely closed even when a vehicle collision occurs.SOLUTION: The door lock device for the vehicle comprises: a U-shaped striker attached on a car body; a latch opening provided in a vehicle door that accommodates the striker; a first lever, when rotated, that traverses the latch opening and passes an opening of the striker accommodated in the latch opening to regulate a movement of the vehicle door; and a moving device that moves by an inertial force smaller than the first lever and rotates / moves the first lever.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a vehicle door lock device. [Background technology]

[0002] Conventionally, a vehicle door lock device that holds a door closed even in the event of a vehicle collision is known (see, for example, Patent Document 1). The vehicle door lock device of Patent Document 1 includes a latch member, a latch pole member, a pole lever member, and an interlocking member (Fig. 1 Transmission lever 48). The latch member engages with a striker provided on the vehicle. The latch pole member rotates the latch member. The pole lever member interlocks with an operating part of the door. The interlocking member is disposed between the pole lever member and the latch pole member. These members rotate the latch member in interlock with the operating part, thereby switching between a holding state in which the latch member holds the striker and an opening state in which the latch member releases the striker.

[0003] Furthermore, in the vehicle door lock device of Patent Document 1, when the vehicle is hit in a side collision, the interlocking member moves due to inertial force and separates from the latch pole member, thereby preventing the door from opening. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] European Patent Application Publication No. 1375794 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the vehicle door lock device of Patent Document 1, the interlocking member moves due to inertial force, so if the energy of a side collision is not sufficiently transmitted to the interlocking member, the interlocking member does not move sufficiently, which may cause the interlocking member to push the latch pole member and open the door.

[0006] The present disclosure provides a vehicle door lock device that ensures that the door is more reliably closed even in the event of a vehicle collision. [Means for solving the problem]

[0007] The vehicle door lock device of the present disclosure includes a U-shaped striker attached to a vehicle body, a latch opening provided in a vehicle door to accommodate the striker, a first lever that crosses the latch opening when rotated and passes through an opening of the striker accommodated in the latch opening to restrict movement of the vehicle door, and a moving device that moves by an inertial force smaller than that of the first lever to rotate the first lever. Effect of the Invention

[0008] According to the present disclosure, it is possible to provide a vehicle door lock device that ensures that the door is kept closed even in the event of a vehicle collision. [Brief description of the drawings]

[0009] [Figure 1] 1 is a partial perspective view of a vehicle equipped with a door lock device according to an embodiment of the present disclosure; [Diagram 2] FIG. 2 is a rear view of a door of the door lock device according to the embodiment of the present disclosure. [Diagram 3] 3 is an enlarged view of a first lever, a second lever, and a latch opening of the door lock device according to the embodiment of the present disclosure. [Figure 4] 1 is a diagram showing an operation state of a vehicle door lock device according to the present disclosure; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the front-rear direction of the vehicle is indicated as Q in the drawings, and the front side is indicated as F. The left-right direction of the vehicle is indicated as P in the drawings, and the right side is indicated as R. Furthermore, the up-down direction of the vehicle is indicated as G in the drawings, and the upper side is indicated as U.

[0011] FIG. 1 is a perspective view of a vehicle C equipped with a vehicle door lock device 1 according to the present disclosure, in an open state, viewed from the rear of the vehicle. The vehicle C is a right-hand drive vehicle in which driving devices such as a driver's seat C2 and a steering wheel C3 are arranged on the right side. Therefore, the vehicle door C1 of this embodiment is the vehicle door C1 on the right side R. However, the vehicle door lock device 1 provided on the left door has a structure that is line-symmetrical in the left-right direction P with the vehicle door lock device 1 of the vehicle door C1. For this reason, in this embodiment, the vehicle door lock device 1 used for the vehicle door C1 on the right side R will be described as an example.

[0012] FIG. 2 is a rear view of the vehicle door C1 at a portion where the vehicle door lock device 1 is attached, as seen from the rear of the vehicle. FIG. 2 also shows a state in which the latch member 20 engages with a striker 12, which will be described later, and the vehicle door C1 is closed. As shown in FIG. 2, the vehicle door C1 has an outer panel 2 and an inner panel 4 from the right side R (outside in the vehicle width direction). A trim 6 (see FIG. 1) is attached to the interior side of the inner panel 4. The outer panel 2 and the inner panel 4 are composed of a reinforcement member (not shown) and the like, and are attached to a body member of the vehicle C by a hinge mechanism (not shown). An inner handle 8 (see FIG. 1) used when unlocking the vehicle door lock device 1 is provided on the vehicle inner side of the vehicle door C1. An outer handle 10 used when unlocking the vehicle door lock device 1 is provided on the vehicle outer side of the vehicle door C1.

[0013] The vehicle door lock device 1 includes a striker 12, a latch opening 14, a first lever 16, a moving device 18, a latch member 20, a latch pole member 22, an inertia lever 24, and a door handle lever member 26.

[0014] 1, the striker 12 is fixed to a pillar member (one example of a vehicle body) C5 of a vehicle C. The striker 12 of this embodiment is a member formed by bending a rod-shaped member having a circular cross section into a U-shape. The striker 12 has an opening of the U-shape formed toward the pillar member C5, and is fixed to the pillar member C5 via a striker flange (not shown).

[0015] As shown in FIG. 2, the latch opening 14 is provided in the inner panel 4 of the vehicle door C1, and receives the striker 12 when the vehicle door C1 is closed. The latch opening 14 is provided with a recess 14a. The recess 14a is a portion formed by recessing the lower surface of the latch opening 14 downward to match the shape of the tip portion of the first lever 16. The recess 14a is formed so that the first lever 16 fits into it. The recess 14a includes a return portion 14b (see FIG. 3) that protrudes upward from the recess 14a, and when the first lever 16 rides over the return portion 14b, the movement of the first lever 16 is restricted.

[0016] As shown in FIG. 3, the first lever 16 is an L-shaped rotating member having a rotating shaft 16a and an abutment surface 16b. The first lever 16 is held rotatably around the rotating shaft 16a on the inner panel 4 at the upper part of the latch opening 14. The first lever 16 of this embodiment is L-shaped, with a long part 16c of the L facing the left-right direction of the vehicle C and a short part 16d facing the up-down direction of the vehicle. The first lever 16 has an abutment surface 16b formed on a lower end surface of the short part 16d. The abutment surface 16b is formed at a position offset to the left from the rotation center of the rotating shaft 16a, and the first lever rotates when the abutment surface 16b is pushed up by a second lever 18a described later.

[0017] When the first lever 16 rotates, it crosses the latch opening 14 from top to bottom and passes through the opening of the striker 12 housed in the latch opening 14, thereby restricting the movement of the vehicle door (see FIG. 4). The rotation of the first lever 16 is stopped when the end of the longitudinal portion 16c of the first lever 16 fits into the recess 14a.

[0018] 2, the moving device 18 is a device that moves by an inertial force smaller than that of the first lever 16 and rotationally moves the first lever 16. In this embodiment, the moving device 18 further moves by an inertial force smaller than that of the inertia lever 24 and can rotationally move the first lever 16.

[0019] 3, the movement device 18 has a second lever 18a, a spherical ball member 18b, and a housing 18c. The second lever 18a includes a rotation shaft 18d, an L-shaped lever body 18e, and a push-up portion 18f that is provided at the upper end of the lever body 18e and pushes up the abutment surface 16b of the first lever 16. The housing 18c includes an inclined surface 18g that inclines upward toward the right side of the vehicle C. The housing 18c is fixed to either the striker 12, the striker flange, or the pillar member C5.

[0020] The second lever 18a has a push-up portion 18f disposed at a position at its upper end where it can come into contact with the contact surface 16b of the first lever 16. That is, when viewed from above the vehicle C, the push-up portion 18f of the second lever 18a is disposed at a position where the contact surface 16b of the first lever 16 and the push-up portion 18f of the second lever 18a overlap. When an inertial force acts toward the right side R of the vehicle C, the moving device 18 causes the ball member 18b to rise along the inclined surface 18g and lifts the second lever 18a upward toward the first lever 16.

[0021] 2, the latch member 20 rotates from a holding position where it holds the striker 12 to a release position where it releases the striker 12. When the striker 12 enters the latch opening 14, the striker 12 pushes the latch member 20, causing the latch member 20 to rotate to the holding position. When the inner handle 8 or the outer handle 10 is pulled, the latch member 20 rotates from the holding position to the release position in cooperation with the door handle lever member 26, the inertia lever 24, and the latch pole member 22.

[0022] The latch member 20 is disposed forward of the moving device 18. In other words, the moving device 18 and the first lever 16 are provided closer to the attachment position of the striker 12 and the pillar member C5 than the latch member 20.

[0023] The latch pole member 22 is disposed between the latch member 20 and the inertia lever 24. The latch pole member 22 functions as a cam that converts the upward and downward movement of the door handle lever member 26 into a rotational movement of the latch member 20.

[0024] The inertia lever 24 is disposed between the latch pole member 22 and the door handle lever member 26. The inertia lever 24 is provided to be able to swing to the right side R (outside in the vehicle width direction). The inertia lever 24 is also provided to be biased to the left side (inside in the vehicle width direction) by a biasing member (not shown). When an inertia force acts toward the right side R of the vehicle door C1, the inertia lever 24 overcomes the biasing force and swings counterclockwise. By swinging the inertia lever 24 in this manner, the inertia lever 24 moves away from the latch pole member 22, blocking the path by which the up and down movement of the door handle lever member 26 is transmitted to the latch pole member 22. This prevents the latch member 20 from rotating.

[0025] When the inner handle 8 or the outer handle 10 is pulled, the door handle lever member 26 swings up and down and rotates the latch pole member 22 via the inertia lever 24.

[0026] Next, the operation of the vehicle door lock device 1 will be described with reference to Fig. 4. In this embodiment, the operation of the vehicle door lock device 1 at the time of a side collision in which the vehicle door C1 is hit from the right side R will be described.

[0027] As shown in Fig. 4(a), when the vehicle C is hit by a side collision, the vehicle door C1 receives a force pushing it to the left. At this time, the ball member 18b of the moving device 18 moves and rises along the inclined surface 18g due to the inertial force acting toward the right side R. When the ball member 18b rises, the ball member 18b pushes the lever body 18e of the second lever 18a upward. When the lever body 18e is pushed upward, the push-up portion 18f comes into contact with the contact surface 16b of the first lever 16, and the first lever 16 rotates and moves.

[0028] As shown in FIG. 4(b), when the first lever 16 rotates around the rotation shaft 16a, the tip of the longitudinal portion 16c crosses the opening of the latch opening 14 and comes into contact with the return portion 14b of the recess 14a and stops temporarily.

[0029] As shown in FIG. 4(c), for example, if the inertia lever 24 (see FIG. 2) does not function sufficiently and the latch member 20 rotates to the release position, the vehicle door C1 (see FIG. 1) will attempt to open. However, the first lever 16 abuts against the striker 12, which rotates the first lever 16 further, and the tip of the longitudinal portion 16c of the first lever 16 climbs over the return portion 14b of the recess 14a. This causes the tip to fit into the recess 14a. As a result, the first lever 16 abuts against the striker 12, restricting the movement of the vehicle door C1.

[0030] In this manner, according to the vehicle door lock device 1 of the present disclosure, the first lever 16 abuts against the striker 12 to restrict the movement of the vehicle door C1. This makes it possible to prevent the vehicle door C1 from opening during a side collision. That is, even if the vehicle C collides, the door is reliably kept closed.

[0031] Furthermore, the first lever 16 is pushed by the moving device 18 to rotate. The moving device 18 has an inertia lever 24 and a ball member 18b that moves with a smaller inertial force than the first lever 16. Therefore, even if the inertia force transmitted to the inertia lever 24 is insufficient and the inertia lever 24 does not rotate, the first lever 16 always rotates. This ensures that the door is more reliably closed even if the vehicle C collides.

[0032] <Other embodiments> Although the embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the multiple modifications described in this specification can be arbitrarily combined as necessary.

[0033] For example, in the above embodiment, the vehicle door C1 is described as a driver's door, but the present disclosure is not limited thereto. The vehicle door lock device 1 of the present disclosure may be used in a rear door corresponding to a rear seat of the vehicle C. Also, as described above, the vehicle door lock device 1 having a symmetrical shape may be used in a left door. [Explanation of symbols]

[0034] 1: Vehicle door lock device, 12: striker, 14: latch opening, 14a: recess 16: first lever, 16b: contact surface 18: moving device, 18a: second lever, 18b: ball member 20: Latch member C: Vehicle, C1: Vehicle door

Claims

1. A U-shaped striker that is attached to the vehicle body, a latch opening provided in a vehicle door for receiving the striker; a first lever that, when rotated, crosses the latch opening and passes through an opening of the striker housed in the latch opening to restrict movement of the vehicle door; a moving device that moves by an inertial force smaller than that of the first lever and rotates the first lever; A vehicle door lock device comprising:

2. The first lever abuts against the striker to restrict movement of the vehicle door. The door lock device according to claim 1.

3. the moving device has a second lever whose tip moves toward the first lever, the first lever has a contact surface with which the second lever comes into contact, the contact surface being located at a position offset from a rotation center of the first lever; The second lever presses the abutment surface to rotate the first lever. The door lock device according to claim 1.

4. the moving device has a ball member that rotates the second lever, The ball member moves by inertial force and pushes the second lever toward the first lever. The door lock device according to claim 3.

5. The first lever is rotatably supported at an upper portion of the latch opening, the first lever is L-shaped, one end of the L-shaped lever abuts against the moving device, and the other end of the L-shaped lever fits into a recess provided in a lower portion of the latch opening; The door lock device according to claim 1.

6. a latch member provided in the latch opening and configured to lock the vehicle door to the striker; The moving device and the first lever are provided closer to a mounting position between the striker and the vehicle body than the latch member. The door lock device according to any one of claims 1 to 5.

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