JP4307891B2 - Vehicle door lock device - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a vehicle door lock device including an electric lock release mechanism and a manual lock release mechanism.
[0002]
[Prior art and its problems]
In general, a vehicle door lock device including a luggage door (trunk) fixes a striker to one of a vehicle body and a vehicle door, and on the other side, a base plate having an entrance opening of the striker is fixed, and the striker of the base plate is fixed. A hook and a ratchet for holding and releasing the striker are pivotally mounted on both sides of the entrance opening. The hook and the ratchet are always urged to rotate in the direction in which they engage with each other. When the ratchet is engaged with the hook while the hook is holding the striker, the hook is held in a locked state, while the ratchet is When the engagement with the hook is released by rotating in the unlocking direction opposite to the rotation biasing direction, the hook releases the striker.
[0003]
Thus, the vehicle door lock device shifts the ratchet from the locked state to the unlocked state by rotating the ratchet in the unlocking direction. In Patent Document 1, linearly according to the operation of the key device. A bush is fixed to the end of the moving rod, and the key device is operated to push the ratchet in the unlocking direction with this bush, thereby shifting the vehicle door lock device to the unlocked state.
[0004]
However, in many cases, such a linearly moving rod is subject to layout restrictions when attached to a vehicle. For example, depending on the position of the key device, it may be difficult to attach the rod to the vehicle.
[0005]
In order to solve such problems, the present applicant has proposed a vehicle door lock device including an electric unlock mechanism and a manual unlock mechanism as means for rotating the ratchet in the unlock direction. Have already filed a patent application (Japanese Patent Application No. 2002-178554).
[0006]
The electric unlocking mechanism of the present invention includes a rotary type unlocking body that has a lock releasing cam that engages with a ratchet and is driven to rotate, a motor that rotationally drives the rotary type unlocking body, and a lock releasing cam. It is a mechanism having spring means for rotating and returning the rotary unlocking body to a non-engagement position where it does not engage with the ratchet.
[0007]
On the other hand, in the manual type unlocking mechanism, a manual lever and an open lever to be rotated are linked by a flexible cable, and an unlocking arm that engages a ratchet is formed on the open lever. The open lever is rotated independently of the electric lock release mechanism, and rotates the ratchet in the unlocking direction. And since the said cable which links a manual lever and an open lever is a member which has flexibility, it does not receive restrictions on a layout like the said rod, but can be attached in a vehicle.
[0008]
However, in this door lock device, a dedicated urging means (for example, a torsion spring) for always urging the open lever of the manual unlocking mechanism toward its initial position (non-engagement position with the ratchet). Was established. For this reason, the number of parts increased and the assembly was troublesome.
[0009]
[Patent Document 1]
Japanese Utility Model Publication No. 4-129282.
OBJECT OF THE INVENTION
The present invention relates to a vehicle door lock device including an electric lock release mechanism and a manual lock release mechanism, in which the components are not limited in layout, the number of parts is small, and the vehicle door is easy to assemble. The object is to obtain a locking device.
[0011]
Summary of the Invention
The present invention striker fixed to one of the vehicle body and the vehicle door, and the other to the rotatably supported, the locking mechanism has a hook and ratchet to grip release the striker; directly engaging and disengaging with the ratchet A rotary type unlocking body having a lock release cam that is driven to rotate; and rotating the rotary type unlocking body to the unlocking position side to engage with the ratchet to release the striker. A motor that rotates to a position; and a spring means that rotates and returns the rotary unlocking body to a non-engaging position where the unlocking cam does not engage the ratchet; and an electric unlocking mechanism that directly engages and disengages the ratchet It has an unlocking arm that can be rotated by manual operation, and is independent of the electric unlocking mechanism. Manual unlocking mechanism for rotating the ratchet to the unlocked direction by; In the vehicle door lock device provided with, in the above-described rotary type lock releasing member and the open lever, the rotation when the motor is operated The rotational force of the mold unlocking body is not transmitted to the open lever, and the rotary unlocking body is rotated in the unlocking position direction while the ratchet is rotated in the unlocking direction by the open lever. When the operating force applied to the open lever is released, the rotational biasing force applied by the spring means applied to the rotary unlocking body is transmitted to the open lever, and the open lever is rotated to a non-engagement position with the ratchet. It is characterized in that a return engaging means for returning is provided.
In this way, if the open lever is returned to the non-engagement position with the ratchet using the biasing means of the rotary unlocking body, the return biasing means dedicated to the open lever can be omitted.
[0012]
It is practical to connect the open lever and the manual operation lever via a cable made of a flexible material.
[0013]
It is practical that the return engaging means is a pressing surface formed on the rotary type unlocking body and a pressing protrusion formed on the open lever.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Initially, the whole structure and operation | movement of the door lock apparatus 11 of one Embodiment of this invention are demonstrated.
In this embodiment, the present invention is applied to a luggage door (trunk). As shown in FIGS. 1 and 2, a base plate 12 made of a metal material has a luggage room (vehicle body) of an automobile and a luggage door (vehicle). One of the doors) is fixed to, for example, a luggage door, and the striker 13 held and released by the door lock device 11 is fixed to, for example, a luggage room. A striker entry groove 14 is formed in the base plate 12, and a hook 17 and a ratchet 18 are pivotally attached to both sides of the striker entry groove 14 by a shaft 15 and a shaft 16, respectively.
[0015]
The hook 17 has a striker holding groove 17a, a lock engaging portion 17b, and a spring hooking portion 17c. The ratchet 18 includes a lock portion 18a that engages and disengages with the lock engaging portion 17b of the hook 17, a spring hook portion 18b, and a driven arm 18c. A tension spring 19 that stretches and urges the hook 17 and the ratchet 18 in a direction in which the lock engaging portion 17b and the lock portion 18a are engaged is stretched between the spring hook portions 17c and 18b. When the lock engaging portion 17b and the lock portion 18a are engaged, the striker 13 is held in the striker holding groove 17a (locked state). On the other hand, when the engagement between the lock engaging portion 17b and the lock portion 18a is released, the tension spring 19 rotates the hook 17 in the striker opening direction, and the striker 13 is released from the striker entry groove 14 (unlocked state).
[0016]
A motor housing 20 made of a synthetic resin material is fixed to the base plate 12. The motor housing 20 integrally includes a motor unit housing recess 20a, a rotating body housing recess 20b, and a rotation center shaft 20c formed protruding from the rotating body housing recess 20b. A motor unit 21 in which a worm 21a is fixed to a rotating shaft 21a1 protruding from an electric motor (motor) M is inserted and fixed in the motor unit housing recess 20a. A small-diameter fitting portion 20d that fits into the support hole 12a of the base plate 12 is formed at the tip of the rotation center shaft 20c. The motor housing 20 also has one positioning protrusion 20e corresponding to the fixing holes 12b (three in the illustrated example) of the base plate 12 and two fixing screw seats (screw holes) 20f. The positioning protrusions 20e are fitted into the corresponding fixing holes 12b, and fixing screws (not shown) are inserted into the remaining two fixing holes 12b and the fixing screw seat 20f.
[0017]
As shown in FIG. 2, the base plate 12 is not located on one plane because the plate thickness plane having the striker entry groove 14 and the plate thickness plane for fixing the motor housing 20 are bent. 17 and the ratchet 18 also have a bent shape corresponding to the bent shape of the base plate 12, but in the drawing, the bent shapes of the hook 17 and the ratchet 18 are omitted to simplify the description.
[0018]
A cam-integrated worm wheel (rotary lock release body) 22 located in the rotating body housing recess 20b is fitted on the rotation center shaft 20c of the motor housing 20 so as to be coaxially rotatable. An open lever 23 positioned between the cam-integrated worm wheel 22 and the base plate 12 is rotatably fitted coaxially to the rotation center shaft 20c.
[0019]
The cam-integrated worm wheel 22 includes a center hole 22a that receives the rotation center shaft 20c of the motor housing 20 so as to be relatively rotatable, a worm wheel 22b that is centered on the center hole 22a that meshes with the worm 21a of the motor unit 21, and a center hole 22a. Are integrally provided with a lock release cam 22c that gradually increases the distance and a pressing surface (returning engagement means) 22d (see FIGS. 3 to 5) extending in the radial direction from the center hole 22a.
[0020]
The open lever 23 can be engaged with and disengaged from a fulcrum hole 23a for receiving a small-diameter fitting portion 20d of the motor housing 20 so as to be relatively rotatable, a lock releasing arm 23b, a wire hooking arm 23c, and a pressing surface 22d of the cam integrated worm wheel 22. And a pressing protrusion (returning engagement means) 23e. A flexible wire (cable) that is pulled in conjunction with a pull lever (manual operation lever) (not shown) in the vehicle compartment that passes through a notch 12c1 formed in the bent piece 12c. 24 is connected.
[0021]
The unlock cam 22c of the cam-integrated worm wheel 22 and the unlock arm 23b of the open lever 23 are respectively connected to an engaging portion 18d provided as a bent piece (cut-and-raised piece) at the tip of the driven arm 18c of the ratchet 18. Disengage. The engaging part 18d has a linear part 18d1 pressed by the unlocking cam 22c of the cam-integrated worm wheel 22 or the unlocking arm 23b of the open lever 23, and an inclined part 18d2 pressed by the unlocking cam 22c. ing. When the pull lever is not operated, the open lever 23 is in an initial position (non-engagement position) where the unlocking arm 23b does not engage with the engagement portion 18d of the ratchet 18, as shown in FIG.
[0022]
Between the cam-integrated worm wheel 22 and the motor housing 20, a torsion spring (spring means) 22e (shown in FIGS. 1 and 2) having a coil portion centered on a center hole 22a is latched. The integral worm wheel 22 is always urged to rotate counterclockwise in FIGS. Therefore, the cam-integrated worm wheel 22 rotates counterclockwise in FIGS. 1 and 2 when the electric motor M is in an inoperative state, and the counterclockwise rotation end of the cam-integrated worm wheel 22 is locked. The release cam 22c is regulated at a position where it abuts against the stopper wall 20t (see FIG. 9) of the motor housing 20, and the lock release cam 22c is engaged with the ratchet 18 at the initial position (non-engagement position) that is the rotation end. It is in a non-engagement position with the part 18d.
[0023]
The motor housing 20, the motor unit 21, the cam-integrated worm wheel 22 and the torsion spring 22e constitute an electric lock release mechanism. The open lever 23, the pull lever, and the wire 24 constitute a manual lock release mechanism.
[0024]
The door lock device 11 configured as described above operates as follows. In the locked state (the state shown in FIGS. 1 and 10A), for example, when the motor unit 21 is energized by a remote control unlocking signal and the worm 21a rotates in the direction of the arrow X in FIG. It rotates clockwise in FIGS. 1 and 10 against the spring 22e. Then, the engaging portion 18d of the ratchet 18 is pressed in the same direction by the unlocking cam 22c, and eventually the cam-integrated worm wheel 22 reaches its unlocking position (position shown in FIG. 10C), and the striker 13 holds the striker. The lock is released by being released from the groove 17a (see FIGS. 10A, 10B, and 10C). When the worm 21a further rotates by a predetermined angle in the X direction, the rotation shaft 21a1 stops rotating, and the cam-integrated worm wheel 22 rotates and returns to the initial position by the force of the torsion spring 22e.
[0025]
On the other hand, in the locked state of the door lock device 11 (the state shown in FIGS. 1 and 10A), the open lever 23 in the initial position is moved to the timepiece of FIG. 1 by manual operation via the pull lever (wire hooking arm 23c). When rotating in the direction, the open lever 23 moves to its unlocking position (not shown), and the unlocking arm 23b presses the linear portion 18d1 of the engaging portion 18d of the ratchet 18 in the same direction. Then, the engagement between the lock portion 18a and the lock engaging portion 17b is released, and the striker 13 is released from the striker holding groove 17a, and the lock is released.
[0026]
In this way, when the open lever 23 is moved to its unlocked position by manual operation, the electric motor M is in an inoperative state, so that the pressing protrusion 23e of the open lever 23 is connected to the cam integrated worm wheel 22. When the pressing surface 22d is pushed, the cam-integrated worm wheel 22 is also moved to the unlocked position side.
[0027]
The pressing surface 22d of the cam integrated worm wheel 22 is engaged with the pressing protrusion 23e of the open lever 23, and the cam integrated worm wheel 22 is constantly urged toward the initial position by the torsion spring 22e. After manual operation using the pull lever, when the operator releases his hand from the pull lever, the cam-integrated worm wheel 22 returns to rotate in the counterclockwise direction of FIG. 1, and its pressing surface 22 d pushes the pressing protrusion 23 e of the open lever 23. By pressing in the same direction, the open lever 23 is rotated to automatically return to its initial position.
[0028]
As described above, in this embodiment, the cam-integrated worm wheel 22 is provided with the pressing surface 22d, and the opening lever 23 is provided with the pressing protrusion 23e, whereby the urging force of the torsion spring 22e is used to unlock the unlocking position. The open lever 23 moved to is returned to the initial position. That is, since the torsion spring 22e is commonly used as a biasing means for returning the initial position of the cam-integrated worm wheel 22 and the open bar 23, it is exclusively used for returning only the open lever 23 to its initial position. The urging means is not required, and the number of parts is smaller than that of the prior art, so that the assembling work is facilitated.
Furthermore, since the wire 24 connecting the open lever 23 and the pull lever is a flexible member, there is no restriction on the layout when it is installed in the vehicle. When the cam-integrated worm wheel 22 is moved to the unlock position using the electric unlock mechanism, the pressing surface 22d and the pressing protrusion 23e are not engaged. For this reason, since the open lever 23 does not rotate and only the cam-integrated worm wheel 22 rotates, no extra load is applied to the electric motor M.
[0029]
The rotating shaft of the cam-integrated worm wheel 22 and the rotating shaft of the open lever 23 can be provided independently and in parallel, but by supporting both coaxially as in the embodiment, the number of parts can be reduced. Assembling man-hours are being reduced.
[0030]
【The invention's effect】
According to the present invention, in a vehicle door lock device including an electric lock release mechanism and a manual lock release mechanism, components are not limited in layout, the number of parts can be reduced, and assembly is facilitated. It becomes possible to do.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a vehicle door lock device according to the present invention.
FIG. 2 is an exploded perspective view of the same.
FIG. 3 is an exploded perspective view of a cam-integrated worm wheel and an open lever.
FIG. 4 is a rear view when an open lever is assembled to a cam-integrated worm wheel.
FIG. 5 is a side view of the cam-integrated worm wheel and the open lever in an integrated state, as viewed from the direction of the arrow V in FIG. 4;
FIG. 6 is a front view when an open lever is assembled to a cam-integrated worm wheel.
FIG. 7 is a perspective view showing a state in which a base plate and a motor housing are combined.
FIG. 8 is a longitudinal sectional view of the vehicle door lock device.
FIG. 9 is a rear view of a single cam integrated worm wheel.
FIGS. 10A, 10B, and 10C are front views showing the unlocking operation by the cam-integrated worm wheel. FIGS.
[Explanation of symbols]
11 Door lock device 12 Base plate 12a Support hole 12b Fixing hole 13 Striker 14 Striker entry groove 15 16 Shaft 17 Hook 17a Striker holding groove 17b Lock engaging part 17c Spring hook part 18 Ratchet 18a Lock part 18b Spring hook part 18c Driven arm 18d Engaging portion 18d1 Linear portion 18d2 Inclined portion 19 Tension spring 20 Motor housing 20a Motor unit housing recess 20b Rotating body housing recess 20c Rotating center shaft 20d Small diameter fitting portion 20f Fixed screw seat 21 Motor unit 21a Worm 21a1 Rotating shaft 22 Cam integrated Warm wheel (rotary unlocking body)
22a Center hole 22b Worm wheel 22c Unlocking cam 22d Pressing surface (returning engagement means)
22e Torsion spring (spring means)
23 open lever 23a fulcrum hole 23b unlocking arm 23c wire hanging arm 23e pressing protrusion (returning engagement means)
24 wire (cable)
M Electric motor (motor)

Claims (3)

A striker fixed to one of the vehicle body and the vehicle door, and a lock mechanism having a hook and a ratchet that are supported rotatably on the other and that grips and releases the striker;
A rotary unlocking member which is rotated with a lock release cam directly engaging and disengaging with said ratchet; with the ratchet and engaged with by causing the rotary unlocking body is rotated to the unlocked position side the An electric unlocking mechanism comprising: a motor for rotating the ratchet to a position for releasing the striker ; and spring means for rotating the rotary unlocking body to a non-engaging position where the unlocking cam is not engaged with the ratchet; has a lock release arm directly engaging and disengaging with the ratchet, an open lever which is rotationally operated by a manual operation, manual locking for rotating the ratchet to the unlocked direction independently of the above electric lock release mechanism Release mechanism;
In a vehicle door lock device comprising:
When the motor is operated to the rotary unlocking body and the open lever, the rotational force of the rotary unlocking body is not transmitted to the open lever, and the ratchet is unlocked by the open lever. When the operating force applied to the open lever is released after the rotary type unlocking body is rotated in the unlocking position direction while being rotated, the rotation means provided by the spring means applied to the rotary type unlocking body. A vehicle door lock device comprising return engagement means for transmitting a force to the open lever and rotating the open lever back to a non-engagement position with the ratchet. The vehicle door lock device according to claim 1, wherein the open lever is connected to the manual operation lever via a cable made of a flexible material. 3. The vehicle door lock device according to claim 1, wherein the return engagement means is a pressing surface formed on the rotary unlocking body and a pressing projection formed on the open lever. Door lock device.

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