JP2558530B2 - Vehicle door lock device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device, and more particularly to a so-called keyless lock mechanism that locks a door without using a key.

(Prior Art) Conventionally, as a vehicle door lock device equipped with this type of keyless lock mechanism, one disclosed in Japanese Patent Publication No. 48-20573 or Japanese Patent Publication No. 59-52077 is known. .

By the way, in those disclosed in these publications, the locking lever cannot be turned to the lock position unless the door opening handle is pulled when the door is open. It is designed to prevent the door from being locked when the key is left in the car. Further, in such a conventional one, on the front side of the door lock body, a rotary latch that meshes with a striker fixed to the vehicle body side pillar and a locking step formed on the outer peripheral surface of the rotary latch are engaged. And a ratchet for preventing the latch from rotating in the reverse direction, and the ratchet pin planted in the ratchet is projected from the notch hole of the body to the back side, so that the ratchet pin is pivoted above and below the back plate covering the back side. In the unlocked state, the pressing portion provided on the link connecting the open lever and the locking lever can be engaged with the ratchet pin, and when the door opening handle is pulled, the open lever swings to push down the link. Since the pressing portion can push in the ratchet pin, the ratchet is rotated to be released from the latching step portion of the latch to open the latch. Further, when the locking lever is rotated from the unlocked position to the locked position, the link is also displaced, and the pressing portion provided on the link is disengaged from the ratchet pin. Thus, even if the open lever is swung, the pressing portion does not act on the ratchet pin, and therefore, the locked state is maintained while the engagement between the ratchet and the latch is maintained. In the door lock device having such a structure, a so-called keyless lock mechanism is provided on the link so that the lock knob cannot be locked unless the outside handle or the inside handle is pulled when the door is open. In this case, the ratchet pawls are latched differently than when the ratchet pawls are engaged with the half-latch or full-latch locking step so that the ratchet rotation angle differs between the door open state and the door closed state. The latch radius is set to be larger so that the ratchet rotates more when contacting the outer circumference of the ratchet. Therefore, the ratchet pin is closer to the latch when the door is closed, and is displaced away from the latch when the door is open. A notch groove that allows the ratchet pin to move downward when the door is open to the link by utilizing the positional displacement of the ratchet pin, and a locking lever in the door open state when the ratchet pin is at the inner end of the notch groove And a blocking piece that blocks the lock lever from turning from the unlocked position to the locked position in the direction of rotation of the locking lever toward the locked side. The direction of the force is set so as to match the line connecting the ratchet pin and the ratchet axis so that the force acting on the ratchet pin via the blocking piece does not act as the rotational force of the ratchet. In the unlocked state of the door, the ratchet pin moves up to the non-interference position with the blocking piece, and the ratchet pin and the pushing piece of the link come into contact with each other.When the handle is pulled, the link moves downward and the pushing piece moves to the ratchet. The pin is pushed in and the ratchet is rotated to disengage the latch from the ratchet. Further, when the handle is pulled, the locking lever can be freely rotated in the locking direction.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional one, the blocking piece provided on the link directly moves the locking lever from the unlocked position to the locked position in the door open state. Since it is designed to be applied to the ratchet pin, the acting force must be set on the line connecting the ratchet pin and the ratchet shaft so that the force does not act as the rotational force of the ratchet, and there is no freedom in design. There is.

(Means for Solving the Problem) The present invention is intended to solve the above-described problems, and as a means thereof, a latch that engages with a striker on the vehicle body side and rotates, It is equipped with a ratchet that is spring-biased in the direction to engage the latch and that engages with the locking stepped portion provided on the outer peripheral surface of the latch to hold the latch in the closed door position. In the vehicle door lock device in which the ratchet is rotated through the opening to release the latch, the open lever and the operating piece are overlapped horizontally with respect to the door lock device so as to coaxially support the door lock device. Are arranged in a horizontal direction, and are displaced in the horizontal direction in conjunction with the rocking of the locking lever, thus linking the open lever with the operating piece.
It is configured by including a non-cooperative connecting member.

Further, an engaging projection for engaging with an engaging piece provided on the connecting member is provided, and when the door is open, the ratchet rotates to a position different from the door closing position to swing the operating piece to engage the engaging piece. The piece is displaced to the engagement position with the engagement protrusion, and the displacement of the locking lever to the locking position is disabled.

(Example) Hereinafter, the Example of this invention is described based on drawing.

1 is a front view showing a vehicle door lock device according to the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a right side view thereof, and FIG.
FIG. 5 is a sectional view taken along the line AA in FIG. 3, FIG. 5 is a sectional view taken along the line BB in FIG. 2, and FIG. 6 is a front view showing the state in which the latch is held in the half latch position or the full latch position. Fig. 8 is a front view of the ratchet, Fig. 8 is a rear view showing a state where the link is rocked by the open lever in the door open state, and Fig. 9 is a state in which the locking lever is rotated to the lock position in the door open state. Rear view showing the first
Fig. 10 is a rear view showing the unlocked state when the door is closed.
11 is a rear view showing a state in which the handle is pulled when the door is closed and locked.

As shown in FIG. 1, on the front side of a synthetic resin body 1 of a door lock installed on the door side of a vehicle, a striker 4 fixed to a pillar on the vehicle body is inserted at a substantially central portion thereof. An access path 5 and a recess 8 are formed. Inside the recess 8, a latch 6 that engages with the striker 4 and rotates in a door closing direction (counterclockwise direction) and an outer periphery of the latch 6 are formed. And a ratchet 7 that holds the latch 6 at the door closing position by engaging with an engagement step portion (a half engagement step portion 16 or a full engagement step portion 17 described later) provided on each side of the entrance passage 5. It is set up.

The latch 6 is rotatably supported by a shaft 9. A pin 11 is projectingly provided on the back surface of the latch 6, and the pin 11 is slidably arranged in an arc groove 12 formed in the body 1. A spring 13 is held in a compressed state between one end surface of the arc groove 12 and the pin 11, whereby the latch 6 is always biased in the door opening direction (clockwise direction). The latch 6 is a known substantially disk-shaped rotary latch, and an engaging groove 14 is bored in the radial direction thereof so that the striker 4 can be engaged when the door is closed. A half engagement stepped portion 16 and a full engagement stepped portion 17 that engage with a locking surface 41 of the ratchet 7, which will be described later, are formed on the two leg portions that are sandwiched.
The ratchet 7 also has a substantially disc shape, and the surface facing the latch 6 is a cam surface 18 that is cut out in an arc shape along the rotation trajectory of the latch 6 and is continuous with the cam surface 18. And a locking surface 41 formed in the circumferential direction, and a projection 22 protruding in the radial direction from the end of the locking surface 41. In addition, the shaft hole 19 that pivotally supports the ratchet 7 has the cam surface 18 in the material state.
Since it is formed so that a part thereof is opened (see FIG. 7), the shaft 20 of the ratchet 7 can be brought closer to the rotation locus of the latch 6, and as a result, the door lock device can be compared to the conventional one. It can be miniaturized. The width of the opening 42 (FIG. 7) provided in the cam surface 18 is made substantially equal to or smaller than the diameter of the shaft hole 19. A cushioning member 36 made of a resin material is provided on the cam surface 18 by molding, and the cushioning member 36 closes the opening 42 of the rotating shaft hole 19, and the shaft hole 19 also has a cylindrical shape. Since the ratchet 7 is extended, the ratchet 7 does not make a noise when it is rotated. Here, the projection 22 is provided with a buffer member 38 made of a resin material by molding,
As a result, it is possible to avoid a collision noise when the protrusion 22 comes into contact with the half engagement stepped portion 16 and the full engagement stepped portion 17 of the latch 6. Further, on the lower surface of the protrusion 22, a protrusion 39 made of a resin material integrated with the buffer member 38 is provided. Below the ratchet 7, the ratchet 7
A spring mounting groove 40 is formed along the outer circumference of the. A spring 23 is held in a compressed state between one end surface of the spring mounting groove 40 and the lower surface of the protrusion 22, whereby the ratchet 7 is always engaged with the latch 6 (counterclockwise direction). Is urged by. Here, one end of the spring 23 is fitted and fixed to the protrusion 39, so that the vicinity of one end of the spring 23 can be prevented from hitting the wall surface of the spring mounting groove 40.
Friction due to sliding contact between the wall surface and the coil spring 23 can be reduced, and as a result, the ratchet 7 can be smoothly rotated. A pin 43 is planted on the back surface of the ratchet 7 so as to face the locking surface 41 with the shaft 20 interposed therebetween. The pin 43 faces the back side of the cutout hole 52 of the body 1.

As shown in FIGS. 2 and 5, a back plate 3 is attached to the back side of the body 1, and one end of the back plate 3 is connected to an out handle and the other end is an inside. An open lever 27 connected to the handle is pivotally supported below the locking lever 25, one end of which is connected to a door cylinder lock and the other end of which is connected to a lock knob. Further, an operating piece 23 whose one end abuts on the pin 43 is coaxially supported coaxially with the open lever 27.

The open lever 27 has a substantially central portion pivotally supported by the back plate 3 and is arranged substantially horizontally. Further, a spring 28 is locked between one end of the open lever 27 and a locking portion 44 provided above the back plate 3, whereby the open lever 27 is always closed (clockwise). Being energized. And this open lever 27
Can be swung by operating a door opening handle (not shown). That is, one end can be swung counterclockwise through the connecting rod 50 by the out-handle operation and the other end counterclockwise by the inside handle operation.

As described above, the operating piece 23 has its substantially central portion overlapped with the open lever 27 and is coaxially and axially supported by the back plate 3. One end of the operating piece 23 is in contact with the pin 43 of the ratchet 7. Therefore, when the open lever 27 is swung counterclockwise in FIG. 2, the pushing portion 27a of the open lever 27 pushes down a rod 24b, which will be described later, and the operating piece 23 rotates in the same direction via the rod 24b. Since the ratchet 7 can be rotated clockwise in FIG. 6 through the pin 43 that abuts on the other end, the ratchet 7 and the latch 6 are disengaged and the latch 6 is opened. Can be returned to the door position. A long hole 23a is formed on the other end side of the operating piece 23, and a rod 24b formed at one end of a link 24 described later is slidably fitted into the long hole 23a.

The locking lever 25 is pivotally supported by the back plate 3 and has three arms 25a, 25b and 25c. The arm 25b of the locking lever 25 is connected to a lock knob (not shown) provided inside the door. By rotating the lever 31 connected to the lock knob from the inside of the vehicle to operate the lock knob, the locking lever is locked. The door lock device can be locked and unlocked by rotating 25 to the lock position II or the unlock position I.
Also, the link 24 is attached to the arm 25a of the locking lever 25.
One end of which is rotatably connected, and the rod 24b which hangs down from the other end of the link 24 and faces the turning locus of the open lever 27 and the operating piece 23 is the elongated hole 23a of the operating piece 23. It is slidably fitted in. Therefore, the locking lever 25
If the rod 24b of the link 24 is rotated,
Can be displaced within the long hole 23a.

The back plate 3 is provided with a rectangular hole 26 having a substantially rectangular shape within the swing range of the operating piece 23, and the upper edge of the rectangular hole 26 is directed toward the inside of the rectangular hole 26. Engaging projections 26a are provided. On the other hand, the rod 24b of the link 24,
An inverted triangular engaging piece 24a is formed at the tip of the engaging piece 24a, and the engaging piece 24a is an engaging projection 26a protruding into the square hole 26.
It is located on the same plane as. Then, in the door closed state, the engagement piece 24a and the engagement protrusion 26a are in the non-engagement state (see FIG. 10). On the other hand, when the door is in the open state, the latch 6 opens the striker 4, and the end of the locking surface 41 of the ratchet 7 is in contact with the outer peripheral surface of the latch 6 having a smaller radius than the legs of the latch 6. , The ratchet 7 rotates toward the latch 6, and the pin 43 of the ratchet 7 moves downward in the reverse direction. Therefore, the operating piece 23 abutting on the pin 43 rotates clockwise in FIG. 2, and the rod 24b of the link 24 engaged in the other end side long hole 23a is directed to the upper edge of the square hole 26. Then, the inverted triangular engaging piece 24a provided at the tip of the rod 24b comes into contact with the upper edge. In this state, the engaging piece 24 and the engaging protrusion
Since 26a and 26a are in the engaged position, the link 24 cannot be moved and therefore the locking lever 25 is in the locked position.
It cannot be rotated to II. In this case, by swinging the open lever 27 counterclockwise against the biasing force of the spring 28, the pressing portion 27 of the open lever 27 is
Since a moves the rod 24b of the link 24 downward, the engaging piece 24a
The engagement between the engagement protrusion 26a and the engagement protrusion 26a can be released. Therefore,
The locking lever 25 can be rotated to the lock position II (see FIGS. 8 and 9). The engagement pieces 24a and the engagement protrusions 26a are formed with tapered surfaces in the directions in which they engage with each other (see FIG. 2 (a)), so that a reliable engagement state can be obtained. Has been As described above, the rotation of the locking lever 25 is prevented by the engagement piece 24a of the rod 24b and the engagement protrusion 26 of the back plate 3.
Since the ratchet 7 and the ratchet 7 are made to bear the rotation force of the locking lever 25 in the locking direction, unlike the conventional case.

As shown in FIGS. 2 and 3, one end of a rocking lever 34 is rotatably supported on the lower portion of the body 1, and the rocking lever 34 rotates the rocking lever 25. It is designed to be able to swing in a plane perpendicular to the moving surface. Here, the pivotal support of the rocking lever 34 is as follows. That is, as shown in FIG. 4, the shaft portion 34a formed at one end of the swing lever 34 is provided with the recess 35 formed in the body 1.
And the recess 35 is closed by the back plate 3. Since the rocking lever 34 is pivotally supported in this manner, the pivotal support structure is simple and the mounting can be easily performed. Also,
A long hole 34b is formed in a substantially central portion of the rocking lever 34 at right angles to the longitudinal direction thereof, and the arm 25c of the locking lever 25 is inserted into the long hole 34b. Further, a door cylinder lock (not shown) is provided at the other end of the swing lever 34.
And a key rod 35 that is integrally operated with the key rod 35 is moved up and down by a key operation to rotate the locking lever 25 to the lock position II or the unlock position I via the swing lever 34. The door lock device can be locked and unlocked.
Further, as described above, the swing lever 34 is directly connected to the door cylinder lock by the key rod 35, and the swing lever 34 cannot be swung unless the door cylinder lock is operated. However, since the locking lever 25 cannot be touched and cannot be unlocked, the vehicle antitheft property can be improved.

Next, the operation of the door lock device configured as described above will be described.

When the door is closed from the door open state shown in FIG. 1, the latch 6 meshes with the leg portion of the U-shaped striker 4 fixed to the pillar on the vehicle body side and rotates counterclockwise, so that the latch 6 shown in FIG. ) Through the half-latch position to the full-latch position in FIG. 6 (b). At this time, the pin 43 of the ratchet 7 is located far from the approach path 5 of the striker 4 when the door is open, but is close to the approach path 5 when the door is in the half-latch and full-latch positions (6th position). (See Figures (a) and (b)). This is because the ratchet 7 meshes with the latch 6 at the half-latch and full-latch meshing points and the shaft 9 of the latch 6.
This is because the radial distance between and is larger than the radial distance at which the edge of the cam surface 18 of the ratchet 7 contacts the outer peripheral surface of the latch 6 when the door is open. The movement of the pin 43 causes the operating piece 23, which is in contact with the rear side, to rotate. That is, in the open state of the door, the pin 43 pushes in the operating piece 23 at the lowermost end of the cutout hole 52 of the body 1 and abuts, and the rod 24b in the elongated hole 23a on the other end side is formed in the back plate 3 into a square hole.
Position it at the upper edge of 26 (see Figure 2). When the door is closed, the latch 6 meshes with the striker 4 and rotates to the full latch position shown in FIG. 6 (b), and the pin 43 of the ratchet 7 moves upward. Therefore, the pin 43 rotates the engaging operating piece 23, moves to the intermediate position of the body 1 in FIG. 10, and moves the rod 24b of the link 24 engaged in the other end side long hole 23a to the back plate. The engaging piece 24a provided at the tip of the rod 24b and the engaging projection 26a projecting inwardly from the upper edge of the square hole 26 are disengaged from each other. Becomes

When the outside handle is pulled in this state, the open lever 27 rotates counterclockwise in FIG. 10, and the pushing portion 27a of the open lever 27 facing the rod 24b moves to the rod 2
The operating piece 23 is further rotated in the same direction via 4b, and the pin 43 of the ratchet 7 engaged with the other end side is pulled up to the upper edge of the cutout hole 52. Therefore, since the pin 43 moves upward in the fully latched state of FIG. 6 (b), the ratchet 7 rotates clockwise to disengage from the latch 6 and open the striker 4 to open the door.

Also, the door is closed in the fully latched state (Fig. 6 (b),
10), when the locking lever 25 is rotated from the unlock position I to the lock position II by the door cylinder lock or the lock knob operation, the rod 24b on the other end of the link 24 to be connected is moved. It moves to the right side edge of the elongated hole 23a without being interfered by the engaging projection 26a. Even if the open lever 27 is swung when the rod 24b is at this position, the notch 27b is provided adjacent to the pressing portion 27a of the open lever 27 as shown in FIG. 11, so the rod 24b is pushed in. Absent. Therefore, since the operating piece 23 does not swing, the pin 43 of the ratchet 7 does not move, and the ratchet 7 restrains the reverse rotation of the latch 6 to maintain the locked state of the door lock.

Next, a so-called keyless lock action of locking from the outside of the vehicle without using a key will be described.

In the door open state shown in FIGS. 1 and 2, the engaging piece of the link 24
24a is in contact with the upper edge of the square hole 26, and at this time,
As shown in FIG. 2, the engaging piece 24a of the link 24 is engaged with the engaging projection 2
Since it is engaged with 6a, the locking lever
25 cannot be rotated to the lock position I. That is, the lock knob provided inside the vehicle cannot be operated. Therefore, it is possible to prevent the door from being locked by operating the lock knob while leaving the key in the vehicle. In order to avoid such a mistaken operation, a conscious locking operation is required. That is, when the handle for opening the door is operated and the open lever 27 is swung in the opening direction against the urging force of the spring 28, the rod 24b of the link 24 is pushed down by the open lever 27, whereby the rod 2
The engagement piece 24a provided at the end of 4b and the engagement projection 26a are disengaged (FIG. 8). In this state, the lock knob is operated to rotate the locking lever 25 to the lock position II. It is possible (Fig. 9). When the door is closed after rotating the locking lever 25 to the lock position II in this manner, the striker 4 on the vehicle body side engages with the engaging groove 14 of the latch 6, and the latch 6 is biased by the spring 13. Rotate to the full latch position against. And the full engagement step of the latch 6
17 engages with the locking surface 41 of the ratchet 7 and the reverse rotation of the latch 6 is prevented (FIG. 6 (b)). At this time, as shown in FIG. 9, since the rod 24b of the link 24 is moving to the position facing the notch 27b of the open lever 27, the door opening handle is operated to open the open lever 27 in the opening direction (counterclockwise). Even when the rod 24b is swung in the clockwise direction, the link 24 (that is, the operating piece 23) cannot be swung only by fitting the rod 24b into the notch 27b formed in the open lever 27. Therefore,
Ratchet 7 connected to operating piece 23 via pin 43
Since it cannot be rotated, the engagement between the latch 6 and the ratchet 7 cannot be released, and a so-called idling locked state occurs.

(Effect of the Invention) In the present invention, since the vehicle door lock device is configured as described above, in the door open state, the blocking member that blocks the locking operation of the locking lever unless the door opening handle is pulled, Since the engagement piece is provided on the substrate regardless of the ratchet pin that is the rotating body, it is possible to reliably block the locking lever operation and it is not necessary to pay particular attention to the action direction of the blocking force. It has the excellent effect of increasing the degree of freedom. Further, the engagement projection is located at the engagement position with the engagement piece provided on the board when the door is open, but through the operation piece that comes into contact with the ratchet pin in the direction of separating from the engagement piece when the door is closed. Since the rod at the tip of the link moves to the notch of the open lever in the elongated hole of the operating piece by locking the locking lever, the engaging protrusion is not blocked by the engaging piece, and the keyless There is an effect that the lock operation can be reliably performed without any trouble. Further, since the open lever, the operating piece and the connecting member (link) are arranged in the horizontal direction, there is an excellent effect that the size in the vertical direction can be made smaller and the entire device can be made smaller than the conventional one. .

[Brief description of drawings]

1 is a front view showing a vehicle door lock device according to the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a right side view thereof, and FIG.
FIG. 5 is a sectional view taken along the line AA in FIG. 3, FIG. 5 is a sectional view taken along the line BB in FIG. 2, and FIG. 6 is a front view showing the state in which the latch is held in the half latch position or the full latch position. Fig. 8 is a front view of the ratchet, Fig. 8 is a rear view showing a state where the link is rocked by the open lever in the door open state, and Fig. 9 is a state in which the locking lever is rotated to the lock position in the door open state. Rear view showing the first
Fig. 10 is a rear view showing the unlocked state when the door is closed.
Figure 11 is a rear view showing the state in which the handle is pulled with the door closed and locked. 3 …… Back plate, 4 …… Strike 6 …… Latch, 7 …… Ratchet 23 …… Operating piece, 24 …… Link 24a …… Engaging piece, 24b …… Rod 25 …… Locking lever 26 …… Square hole , 26a …… Engagement protrusion 27 …… Open lever, 43 …… Pin

Claims (3)

(57) [Claims] 1. A latch which rotates by engaging with a striker on the vehicle body side, and a latch which is spring-biased in a direction of engaging the latch and engages with a locking step provided on an outer peripheral surface of the latch. And a ratchet that holds the door in the closed position, and the ratchet is rotated through the operating piece by swinging the open lever to release the latch. And the operating piece are horizontally overlapped and axially supported coaxially, and are also arranged in the horizontal direction, and are displaced in the horizontal direction in conjunction with the rocking of the rocking lever, so that the open lever and the operating piece cooperate with each other. A vehicle door lock device comprising a non-cooperative connecting member. 2. An engaging projection provided on the connecting member for engaging with an engaging piece, wherein the ratchet rotates to a position different from a door closed position to swing the operating piece when the door is open. The vehicle door lock device according to claim 1, wherein the engagement piece is displaced to an engagement position with the engagement protrusion, and the locking lever is prevented from being displaced to a locking position. 3. The vehicle door lock device according to claim 2, wherein the engagement protrusion is formed on a back plate of the door lock device.