JP2003214007A - Door lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve an antitheft performance of a vehicle. <P>SOLUTION: This door lock device comprises a locking mechanism 20 disposed in a vehicle door 1 and having a locking lever 25 for switching between the lock state and the unlock state of the vehicle door 1 to a vehicle body 6, a cover 31 for covering the locking mechanism 20, a key operation member 4 disposed in the vehicle door 1, and a cable 40 having one end linked with the key operation member 4 and the other end linked with the locking lever 25 through an opening part 31b formed in the cover 31. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device.

[0002]

2. Description of the Related Art Conventionally, as a door lock device of this type, one disclosed in Japanese Patent Laid-Open No. 7-97881 is known. A conventional door lock device is a locking mechanism including a locking lever that is arranged on a vehicle door and that switches a locked state and an unlocked state of the vehicle door to a vehicle body, a cover that covers the locking mechanism, and a vehicle door. The key operation member is provided and a link that links the key operation member and the locking lever through an opening formed in the cover. By operating the key operation member with the key, the link moves, and as a result, the locking lever operates. As a result, the key lever linked to the locking lever is actuated to switch the locked state and the unlocked state of the vehicle door to the vehicle body.

This door lock device has a structure in which the locking mechanism is covered with a cover in order to prevent improper unlocking (switching from the locked state to the unlocked state). However, since the link linked to the locking lever was not covered, it was possible to contact the link. Therefore, it is possible to directly move the link with an inappropriate tool, and as a result, it is possible to operate the locking lever. This is a problem from the viewpoint of vehicle theft prevention.

[0004]

SUMMARY OF THE INVENTION The present invention has a technical object to improve the anti-theft property of a vehicle.

[0005]

In order to solve the above-mentioned problems, the technical means taken in the present invention is provided in a vehicle door and switches between a locked state and an unlocked state of the vehicle door with respect to the vehicle body. A locking mechanism having a locking lever, a cover for covering the locking mechanism, a key operation member arranged on the vehicle door, an opening formed at one end of the key operation member and at the other end of the key operation member. And a cable linked to the locking lever via a section.

In this structure, the key operating member and the locking lever are linked by a cable. Here, since the cable can be flexibly deformed, it is difficult to move the cable and operate the locking lever by an improper contact of the tool. Therefore, the anti-theft property of the vehicle is improved.

Preferably, a first protector for closing the opening is provided at the other end of the cable.

In this structure, since the first protector protects the opening, it is possible to prevent an improper intrusion of the tool into the cover. Therefore, it becomes difficult to directly contact and operate the locking mechanism. Therefore, the antitheft property of the vehicle is further improved. Further, since the cable is configured to include the first protector, the cable and the first protector can be easily arranged on the cover.

Preferably, the first protector includes a first locking portion which is locked to the cover.

In this structure, the first locking portion of the first protector is locked to the cover, so that the first protector is fixed to the cover. That is, there is no need to provide a separate member for fixing, and the number of parts is small.

Preferably, the key operating member includes a key cylinder into which a key is inserted, and an operating portion which is operated by a key operation and which is linked to one end of the cable. One end of the cable covers the operating portion. It is good to have two protectors.

In this structure, since the second protector with which one end of the cable is linked covers the operating portion, it is possible to suppress the operation of the operating portion by an inappropriate tool or the like.
Since this operating portion is linked to the locking lever via the cable, the above configuration further improves the vehicle antitheft property. Further, since the second protector is provided at one end of the cable, the cable and the second protector can be easily arranged on the key operation member.

Preferably, the second protector includes a second locking portion which is locked to the key operating member.

In this structure, the second protector is fixed to the key operating member by locking the second locking portion of the second protector to the key operating member. That is, there is no need to provide a separate member for fixing, and the number of parts is small.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a door lock device 10 according to the present embodiment has a door 1 on the vehicle rear side (see FIG.
It is arranged on the left side of the drawing. First, the latch mechanism (not shown) of the door lock device 10 will be described. The latch mechanism roughly includes a latch (not shown) and a pole (not shown). The door 1 is opened and closed with respect to the vehicle body 6 by engaging and disengaging the latch with a striker (not shown) arranged on the vehicle body. That is, the opening operation of the door 1 with respect to the vehicle body 6 is performed when the latch is rotated by the biasing means such as the torsion spring and disengaged from the striker. The pawl is for restricting this rotation of the latch, that is, the deregulation of the pawl with respect to the latch allows the latch to be turned. Here, the pole is pivotally supported integrally with a shaft 22 on which a lift lever 21 shown in FIG. 2 is pivotally supported. The shaft 22 is rotatably fixed to the base 30, and the pole is disposed on the side of the base 30 in the vertical direction on the paper surface of FIG. When the lift lever 21 rotates about the shaft 22 in the counterclockwise direction shown in FIG. 2, the pole also rotates in conjunction with the rotation. This rotation causes the pole to be released from the restriction on the latch.

Next, the locking mechanism 20 of the door lock device 10 will be described. As shown in FIG. 2, the locking mechanism 20 includes an open lever 23, a link 24, a lift lever 21, and a locking lever 25 (locking lever).

The open lever 23 is rotatably fixed to the base 30 by a pin 26 located substantially at the center in the longitudinal direction. The open lever 23 is biased by a spring 28 in the clockwise direction shown in FIG.
Further, one end of the rod 32 is linked to the operation end portion 23a located on the left side in FIG. 2 of the open lever 23. The other end (not shown) of the rod 32 is linked to the outside door handle 3 (shown in FIG. 1). Therefore, by operating the outside door handle 3, the open lever 23 rotates via the rod 32. The operation end 23
An operation end (not shown) located on the opposite side of the pin 26 of a is linked to the inside door handle 2 (shown in FIG. 1) via a rod or a cable. Therefore, even if the inside door handle 2 is operated, the open lever 23
Rotates. In addition, the operating end 23 of the open lever 23
A link 24 is provided at a.

The link 24 has a connecting hole 24a and an engaging portion 2
4b and a connecting elongated hole 24c are formed. Connection hole 24a
Is a substantially 8-shaped hole formed in the link 24, and engages with the locking claw portion 23b formed in the open lever 23.
The link 24 is rotatable around the locking claw portion 23b. At the lower end of the link 24 shown in FIG. 2, the connecting elongated hole 2 extending along the longitudinal direction of the link 24 is formed.
4c is formed. The engagement pin 25a of the locking lever 25 is inserted into the connecting elongated hole 24c. An engaging portion 24b is formed substantially at the center of the link 24 in the longitudinal direction. The engaging claw 21a of the lift lever 21 is arranged near the lower side of the engaging portion 24b in FIG.

The locking lever 25 has a longitudinal direction in the left-right direction in FIG. 2, and is fixed to the base 30 by a pin 27 at approximately the center in the longitudinal direction. The locking lever 25 is rotatable around the pin 27 with respect to the base 30. A connecting elongated hole 25 is provided at the operating end 25c located on the left side of the locking lever 25 in FIG.
b is formed. The cable 4 is provided in the connecting long hole 25b.
The cable end 41a of the inner cable 41 of 0 (cable) is engaged. As shown in FIGS. 2 and 5 to 6, the inner cable 41 of the cable 40 is the door 1
It is also linked to the key operation member 4 (key operation member) arranged in the. Therefore, by operating the key operation member 4, the locking lever 25 is moved to the pin 27 via the cable 40.
Rotate around. The details of the cable 40 will be described later. In addition, the locking lever 25 has an operating end portion 2 located on the opposite side with the pin 27 of the operating end portion 25c interposed therebetween.
5d is linked to the lock knob 5 (shown in FIG. 1) via a rod (not shown) and a cable (not shown). Furthermore, a connecting hole 25e formed in the operation end portion 25d
The operating arm 34 of the actuator 33 (shown in FIG. 3).
(Shown in FIG. 3) is inserted. Therefore, the locking lever 25 is also operated by operating the lock knob 5 and the actuator 33.
Rotates. The key operation member 4 will be described here. The key operation member 4 includes a key cylinder 4a (key cylinder) into which a key (not shown) is inserted, and an actuating portion 4b (actuating portion) actuated by a key operation. As shown in FIG. 6, an end portion 41b which is one end of the inner cable 41 is linked to the operating portion 4b. And the operating part 4b
The key can be rotated by a predetermined angle around the portion connected to the key cylinder 4a by a key operation.

The operation of the locking mechanism 20 will be described here. In the state shown in FIG. 2, the door 1 is the vehicle body 6
Shows an unlocked state that can be opened. In this state, when the open lever 23 operates counterclockwise in FIG. 2, the link 24 moves downward in FIG.
Then, the engaging portion 24b of the link 24 engages with the engaging claw 21a, and the lift lever 21 rotates about the shaft 22 in the counterclockwise direction shown in FIG. Therefore, the door 1 is the vehicle body 6
To open against. Next, it is assumed that the locking lever 25 is rotated about the pin 27 by a predetermined angle in the clockwise direction in FIG. 2 from the unlocked state. This state is a locked state in which the door 1 cannot be opened with respect to the vehicle body 6. From the unlocked state to the locked state,
By rotating the locking lever 25, the engagement pin 25a,
The link 24 is interlocked via the connecting elongated hole 24c. That is, the link 24 rotates about the locking claw portion 23b in the counterclockwise direction in FIG. 2 by a predetermined angle. As a result, the engaging portion 24b moves to the right in FIG.
2 is offset with respect to the engaging claw 21a of FIG. Therefore, in the locked state, even if the link 24 moves downward in FIG. 2 by the operation of the open lever 23, the engaging portion 24b does not engage with the engaging claw 21a. Therefore, the lift lever 21 does not operate, and the door 1 cannot be opened with respect to the vehicle body 6. That is,
The locking lever 25 of the locking mechanism 20 switches the locked state and the unlocked state of the door 1 with respect to the vehicle body 6.

The locking mechanism 20 is arranged on the front side of the base 30 in the vertical direction of the paper surface of FIG. 2, and these locking mechanisms 20 are covered with a cover 31 (cover). The cover 31 is the locking mechanism 2
0, it is intended to prevent an unauthorized tool from entering from the outside of the door 1, and is provided to prevent the vehicle from being stolen. As shown in FIG. 3, the left side of the cover 31 shown in FIG.
The middle part 31a is formed. Further, the right side of the cover 31 in FIG. 3 has a structure in which it is erected near the actuator 33 in the upward direction in FIG. An opening 31b (opening) is formed near the middle step 31a. Through the opening 31b, the connecting elongated hole 25b of the locking lever 25 and the cable end 41a of the inner cable 41 are connected.
Are working together. Further, the opening 31b has a size such that the rotation of the locking lever 25 does not hinder the linkage between the inner cable 41 and the locking lever 25.

The cable 40 is roughly composed of an inner cable 41 and a casing 42. Inner cable 4
1 is made of metal, and as described above, the end portion 41b (upper end in FIG. 2) which is one end of the inner cable 41 is linked to the operation portion 4b of the key operation member 4. Further, the above-mentioned cable end 41a is arranged at the other end (lower end in FIG. 2).

The inner cable 41 is covered with a casing 42. The casing 42 has a multilayer structure made of resin, and the inner cable 41 is slidable inside the casing 42. A resin casing cap 42a is fixed to both ends of the casing 42. And
The casing cap 4 at the lower end of the casing 42 shown in FIG.
The protector 43 (first protector) is attached to the portion 2a.
A protector 44 (second protector) is arranged at each of the casing caps 42a at the upper end in FIG. As shown in FIGS. 2 to 4, the protector 43 includes a surface portion 43a and a side surface portion 43b. The surface portion 43a has a substantially rectangular shape. The side surface portion 43b is the front surface portion 43a.
From the entire circumference of the surface 43a in the vertical direction (downward in FIG. 3)
Is formed to extend. A hooking portion 43c is formed on the side surface portion 43b of the protector 43 on the lower side in FIG. Further, the side surface portion 4 of the protector 43 on the upper side in FIG.
A locking claw portion 43d (first locking portion) is formed on 3b. Then, the hanging portion 43c is used as the opening 31 of the cover 31.
The protector 43 is provided on the cover 31 by engaging the locking claw portion 43b with the engaging hole 31c (shown in FIG. 4) formed in the cover 31 after being hooked on the edge of b. That is, with the structure in which the locking claw portion 43b is locked to the cover 31, it is possible to easily and easily
The protector 43 can be fixed to the cover 31.
Then, as shown in FIG.
When it is fixed to the cover 31, the edge of the side surface portion 43b (the lower edge in FIG. 3) is in contact with the cover 31. That is, the protector 43 protects the opening 31b to prevent an illegal tool such as a wire from entering the vicinity of the locking mechanism 20 through the opening 31b. Therefore, the anti-theft property of the vehicle is further improved.

As shown in FIGS. 2 and 5 to 6, the protector 44 is composed of a surface portion 44a and a side surface portion 44b, and has a structure for covering the operating portion 4b of the key operating member 4 as a whole. The surface portion 44a has a shape including the rotation range of the operating portion 4b. The side surface portion 44b is formed so as to extend from the entire circumference of the front surface portion 44a in a direction perpendicular to the front surface portion 44a (rightward in FIG. 6). The side surface 44b is formed with three locking claws 44c (second locking portions). The locking claw portion 44c is the base 4c of the key operation member 4.
Can be engaged with. That is, as shown in FIG. 6, the locking claw portion 44c is locked to the base 4c,
The protector 44 can be easily fixed to the key operation member 4. Then, as shown in FIG. 6, when the protector 44 is disposed on the key operation member 4, the edge of the side surface portion 44b is in contact with the base 4c. That is,
In the protector 44, an unjust tool such as a wire is used for the operating portion 4b.
Prevent invasion of nearby areas. Therefore, the anti-theft property of the vehicle is further improved.

Incidentally, the cable 40 and the protectors 43, 4
The structure of No. 4 is not limited to the structure described above. For example, the protectors 43 and 44 may be integrally formed with the casing cap 42a or may be directly fixed to the casing 42.

Next, the door lock device 10 of the present embodiment.
The operation of will be described. In the unlocked state of FIG. 2, when the key operation member 4 is operated by the key, the operating portion 4b is rotated to the upper position (UNLOCK position) shown in FIG. As a result, the locking lever 25 rotates about the pin 27 in the clockwise direction in FIG. 2 via the inner cable 41. Therefore, the door 1 is unlocked. However, it is assumed that an improper tool enters the vicinity of the cable 40 from the outside in the locked state. In this case, the cable 40 can be flexibly deformed, and the inner cable 41 is covered with the casing 42. Therefore, the unjust tool is the cable 40
Even if it comes into contact with the lock lever 23, the locking lever 23 is activated and the possibility of switching from the locked state to the unlocked state is extremely low. Therefore, the anti-theft property is high. Furthermore,
Even when the door 1 is deformed due to a collision of the vehicle, the cable 40 can be flexibly deformed, so that the locking function can be ensured. In other words, it is possible to secure the linkage of the operation of the key operation member 4 and the locking mechanism 20.

[0027]

According to the invention of claim 1, since the key operating member and the locking lever are linked by a cable,
It is difficult to unlock the vehicle door by an unauthorized tool operating the cable. Therefore, the anti-theft property of the vehicle is improved.

According to the second aspect of the invention, since the first protector protects the opening, it is possible to prevent an improper intrusion of the tool into the cover. Therefore, the antitheft property of the vehicle is further improved.

According to the third aspect of the invention, the first protector can be fixed to the cover with a simple structure.

According to the invention of claim 4, the operating portion is the second
Since it is covered by the protector, it is possible to suppress the operation of the operating portion by an unjust tool or the like. Therefore, the anti-theft property of the vehicle is further improved.

According to the invention of claim 5, the second protector can be fixed to the key operation member with a simple structure.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a door lock device according to the present invention is arranged on a door.

FIG. 2 is a view showing a door lock device according to the present invention.

3 is a cross-sectional view taken along the line AA in FIG. 2 of the locking mechanism portion of the door lock device according to the present invention.

FIG. 4 is a cross-sectional view of the locking mechanism portion of the door lock device according to the present invention taken along the line BB in FIG.

FIG. 5 is a view showing a linking portion between a key operation member and a cable of the door lock device according to the present invention.

FIG. 6 is a door lock device according to the present invention shown in FIG.
FIG.

[Explanation of symbols]

1 door (vehicle door) 4 key operation member 4a key cylinder 4b Actuator 6 vehicle body 20 locking mechanism 25 locking lever 31 cover 31b opening 43 protector (first protector) 43d Locking claw part (first locking part) 44 Protector (2nd protector) 44c Locking claw part (second locking part)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Ichihara             Aichi, 2-chome, Asahi-cho, Kariya city, Aichi prefecture             Within Seiki Co., Ltd. F term (reference) 2E250 AA21 HH01 JJ05 KK02 LL01                       NN01 PP02 PP15 QQ08

Claims (5)

[Claims] 1. A locking mechanism provided on a vehicle door, the locking mechanism including a locking lever for switching between a locked state and an unlocked state of the vehicle door with respect to the vehicle body, a cover for covering the locking mechanism, and a locking mechanism arranged on the vehicle door. A door including: a key operation member provided; and a cable having one end linked to the key operation member and the other end linked to the locking lever through an opening formed in the cover. Locking device. 2. The door lock device according to claim 1, further comprising a first protector for closing the opening at the other end of the cable. 3. The door lock device according to claim 2, wherein the first protector includes a first locking portion that is locked to the cover. 4. The key operating member comprises a key cylinder into which a key is inserted, and an operating portion which is operated by a key operation and is linked to one end of the cable. One end side of the cable covers the operating portion. The door lock device according to any one of claims 1 to 3, further comprising a protector. 5. The door lock device according to claim 4, wherein the second protector includes a second locking portion that is locked to the key operation member.