JPH05523Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a door lock device suitable for vehicles, particularly automobiles.

(Prior Art) Automobile doors are provided with a latch device that locks the door in a closed state by cooperating with a striker fixed to the door opening of the vehicle body. In order to make the door fully latched, a certain amount of pressing force (approximately 30 kg・f for a normal passenger car door) is required, and normally the inertial weight of the door is used to control the rotation speed at a certain rotation speed. is closed by giving. However, if the rotation speed of the door in the closing direction is too fast, unpleasant noise will be generated, and if it is too slow, the door will be in an incompletely latched state, so-called ajar state. In the case of a standard passenger car door, experiments have shown that when the closing speed is 1.0 m/s or more,
It is fully latched, but there is a lot of noise and
At a speed of 0.5 to 1.0 m/s, there is no problem in terms of noise, but the door becomes incompletely latched, and the door does not close at a speed of 0.5 m/s. Therefore, when the door is closed, when the latch installed inside the door contacts the striker fixed to the door opening on the vehicle body side and rotates slightly, a limit switch is activated and a special specially installed latch is activated. It has already been proposed to use a small high torque motor to force the latch toward full latching. However, with this proposed configuration, a motor must be incorporated into the latch device inside the door, which has traditionally been extremely cramped in terms of space.
The structure is extremely complicated, and the dedicated small-sized high-torque motor is generally expensive, leading to an increase in manufacturing costs and problems that require a great deal of effort and expense for maintenance and inspection.

(Problem to be solved by the invention) This invention ensures that the latch is completely locked even when the door is rotated in the closing direction at a slow speed that does not generate unpleasant noise. The object of the present invention is to provide a simple and inexpensive device that can be forcibly driven into position.

(Means for Solving the Problems) The present invention was devised to achieve the above object, and includes a latch that locks the door in the closed position in cooperation with a striker fixed to the vehicle body. A power window motor is installed to open and close the door glass when the door is energized, and when the door is closed, the water squid contacts the latch and the latch is slightly displaced. a first switch configured to connect the output shaft of the motor and a window glass driving member for opening and closing the door glass in a first position where the first switch is open; At the second position, the connection between the output shaft of the motor and the window glass driving member is cut off, and the sliding shaft connects the output shaft and the cable driving member, and the sliding shaft is closed by closing the first switch. from the first position to the second
an actuator for driving the latch to the striker position; a cable for driving the latch in a fully locking direction relative to the striker by driving the cable drive member connected to the motor output shaft; a second switch that is closed by the second switch, and closing the second switch deenergizes the actuator and automatically returns the sliding shaft from its second position to its first position. The object of the present invention is to provide a vehicle door lock device having the following features.

(Function) According to the present invention, the latch is configured to be driven remotely to the fully locked position via a cable using a motor for a power window that is widely installed in modern automobiles as a power source, and further After driving the latch to the fully locked position, the motor is connected to the window glass drive member for the original power window, so (1) the latch and striker lightly engage, producing noise. (2) The power window motor can be used as the latch drive source without the need for a dedicated motor as described above; (3) The power window motor's output can be Since the power is transmitted remotely to the latch via a cable, there is no need to place a motor inside or near the latch device, which requires limited space. (4) The original function of the power window device is not hindered at all, etc. The action is carried out.

(Example) Examples of the present invention will be specifically described below with reference to the accompanying drawings. First of all, Fig. 1 conceptually shows the parts directly related to the present invention from the front door 10 of a passenger car, with the door trim and inner panel removed. A latch device 12 is provided, and a reversible power window motor 16 for driving the window glass 14 up and down is provided in the B section. In FIG. 2, which is an enlarged view of part A viewed from the direction of the arrow, the latch device 12 includes a striker 18 (indicated by a chain line) fixed to a door opening of the vehicle body.
A latch 2 that cooperates with the latch 2 to lock the door 10 in the closed position.
It has 0. A latch 20 is rotatably supported on a latch casing 24 by a pivot 22;
Further, a recess 26 for locking the striker 18 is provided on its outer periphery. A pawl 30 is rotatably supported on the latch casing 24 via a pivot 28, and when the latch 20 is in the fully locked position shown by the solid line in the figure, one end of the pawl 30 is attached to the latch. By engaging with a locking protrusion 32 protruding from the outer periphery, the latch is prevented from rotating in the unlocking direction, that is, to the position shown by the dashed line in the figure. Further, an outer handle 35 is connected to the other end of the pawl 30 via a link 34, and when opening the door 10 from outside the vehicle, the outer handle 35
By rotating counterclockwise in the figure, the engagement between the pawl 30 and the locking protrusion 32 is released, allowing the latch 20 to be rotated to the unlocked position. . (As is well known in the art, the latch device 12 includes an inside handle and an unlocking mechanism linked thereto for unlocking the door from inside the vehicle, and a latch 20 that can be operated directly or indirectly from inside the vehicle. (The latch 20 is provided with a locking mechanism for locking the latch and various other auxiliary devices, but these are omitted as they are not directly related to the present invention.) Furthermore, the latch 20 is provided with one end of the first link 36. is pivotally connected, and the other end of the link 36 is
It is pivotally connected near the other end of a second link 38 whose one end is pivotally supported on the casing 24 . A cable 40 is connected to the other end of the second link 38, and the cable 40 is connected to the door 10 via a rotatable pulley 42 supported by the casing 24 or surrounding door components, as shown in FIG. It extends inside toward the front of the vehicle. The casing 24 is also provided with a first switch 44 (shown as a limit switch in the illustrated embodiment), which is open when the door 10 is open;
When closing the door 10, the latch 20, which is indicated by a dashed line in FIG. 2, is pushed by the striker 18 and is closed when it is slightly rotated counterclockwise in the figure.

Next, as shown in FIGS. 3 to 5, the door 1
A power window motor 16 is disposed in the front portion B of the vehicle 0, and a worm 46 is disposed on the output shaft of the motor. The worm 46 meshes with a worm gear 50 splined to one end of the sliding shaft 48 . A pinion 52 is fixed on the sliding shaft 48, and in all other states except for the normal state, ie, the brief time it is rotating to close the door 10, the sliding shaft 48 is connected to the electromagnetic actuator 54. Pushed to the left and right in FIG. 4 by a return spring 56, the pinion 52 meshes with a sector gear 58, that is, a window glass drive member. At this time, the friction plate of the friction plate clutch 62 of the gear 60 rotatably mounted on the sliding shaft 48 has moved to the left from the position shown in FIG. 4 and is not in contact with the side surface of the gear 60. (The clutch 62 may be of a dog clutch type, which includes a plurality of radial teeth with a relatively low tooth height and has cooperating grooves on the side surfaces of the opposing gears 60.) The gears 60 include: gear 6
4 are always in mesh with each other, and the cable 40 is connected to a mounting bracket 66 protruding from the outer periphery of the gear 64, so that the gear 64 ultimately constitutes a driving member for the cable 40. Furthermore, a second switch 68 (in the illustrated embodiment, a limit switch is used) is disposed on the rotation path of the mounting bracket 66, and this switch is normally open, but when the gear 64 rotates. The solenoid 70 of the actuator 54 is closed when the moving mounting bracket 66 comes into contact with the solenoid 70 of the actuator 54.
It operates to cut off the power supply circuit to the

In the above configuration, the actuator 54 is deenergized and the sliding shaft 48 is in a normal state in all states except for the period in which the door 10 rotates to close.
has moved to the left from the position shown in FIG. 4, and the pinion 52 is meshing with the sector gear 58. Therefore, in order to move the window glass 14 of the door 10 up and down, a power window switch (not shown) is operated.
When the reversible motor 16 is driven in either the forward or reverse direction, the worm 46 on its output shaft rotates the worm gear 50, and the rotation of the worm gear 50 is transmitted from the sliding shaft 48 and pinion 52 to the sector gear 58. . Although the elevating mechanism for the window glass 14 is not shown because it is not directly related to the present invention, the window glass 14 is raised ( fenestration) or lower (fenestration). At this time, since the clutch 62 is not engaged, the gear 60 simply rotates freely on the sliding shaft 48, and the normal operation of the power window device is not disturbed in any way. Now, when the door 10 is opened by operating the outer handle 35, the pawl 30 rotates clockwise in FIG. When an opening force is applied by human power or a vacuum booster installed in a taxi or the like, the striker 18 rotates the latch 20, and the latch 20 is opened at a point as shown in FIG. 2 by a spring force (not shown). Rotate to the release position shown by the chain line. Latch 20
The first link 36 connected to this by the rotation of
The second link 38 is rotated to the rest position shown by the dashed line in FIG. Next, when the door 10 is gently rotated in the closing direction to close it, the striker 18
abuts latch 20, causing it to rotate counterclockwise in FIG. A slight rotation of the latch 20 closes the first switch 44 and energizes the solenoid 70 of the actuator 54.
The return spring 56 is overcome and the sliding shaft 48
is displaced to the right as shown in Fig. 4, and the clutch 6
2 is in contact with the side surface of the gear 60, and the same gear is in contact with the sliding shaft 4.
8, and the pinion 52 is disengaged from the sector gear 58, which is the main member of the power window glass drive device. on the other hand,
When the first switch 44 is closed, the motor 16 is driven, and the gear 64 is rotated counterclockwise in FIGS. 3 and 5 via the worm 46, worm gear 50, sliding shaft 48, and gear 60. , the cable 40 is pulled to the left in the figure via the mounting bracket 66. Due to the displacement of the cable 40, the second link 38
is rotated clockwise in the figure, as shown by the solid line in FIG. 2, and the latch 20 is forcibly rotated in the same direction via the first link 36. The above-mentioned rotation of the latch 20 causes the striker 18 to be positively pushed into the recess 26, resulting in the fully locked state shown by the solid line in the figure. At the same time, the mounting bracket 6
6, the second switch 68 is closed, and the motor 16 is first reversed for a certain period of time to loosen the cable 40 in preparation for the next door opening, and then the solenoid 70 of the actuator 54 is deenergized. The sliding shaft 48 is returned to the normal position by the return spring 56, and the motor 16 thereafter operates as a prime mover for the power window. If, for example, a finger or other foreign object gets caught between the door 10 and the vehicle body while the door is rotating in the closing direction, the clutch 62 may slip, resulting in injury and damage to various parts within the device. Damage can be effectively prevented.

According to the above configuration, (1) the latch is reliably driven to the fully locked position by applying a slight rotational force in the closing direction to the door 10, so it is safe and quiet and does not generate unpleasant noise; 2) Since the power window motor is used to drive the latch, there is no need to install a special expensive motor. (3) The driving force of the power window motor is transmitted to the latch using a cable. There are advantages such as there is no need to incorporate a motor into the latch device, which originally has a complicated structure, and further complication of the structure can be avoided. Note that the present invention is not limited to the above embodiments,
For example, if space allows, pulley 4
The direction of the axis of the latch 2 can be changed by 90 degrees and the cable 40 can be directly connected to the latch 20 to simplify the structure. It is also widely applied to commercial doors.

(Effects of the invention) As described above, the vehicle door lock device according to the present invention includes a door latch device equipped with a latch that locks the door in the closed position in cooperation with a striker fixed to the vehicle body, and a door latch device equipped with a latch that locks the door in the closed position. A power window motor is provided to open and close the door glass by opening and closing the door glass; a switch, which connects the output shaft of the motor to a window glass drive member that opens and closes the door glass in a first position where the first switch is open; and a second switch where the first switch is closed;
At this position, the connection between the output shaft of the motor and the window glass drive member is cut off, and the sliding shaft that connects the output shaft and the cable drive member is connected to the first position by closing the first switch. an actuator for driving the latch from one position to a second position; the cable driving member is connected to a motor output shaft and driven to forcibly drive the latch in the direction of complete locking with respect to the striker; and the cable driving member a second switch that is closed in response to displacement of the actuator, and closing the second switch deenergizes the actuator and automatically returns the sliding shaft from its second position to its first position. To reliably drive a latch to a fully locked position by applying a slight closing force to the door that does not generate unpleasant noise due to its simple and inexpensive structure. Because it is possible to
It is extremely convenient in practice.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a vehicle door implementing the present invention, Fig. 2 is a front view of section A in Fig. 1 viewed from the direction of the arrow, and Fig. 3 is an enlarged side view of section B in Fig. 1. , FIG. 4 is a front view showing a part of FIG. 3 in cross section, and FIG. 5 is a partial side view taken along the line - in FIG. 4 in the direction of the arrow. 10...door, 12...latch device, 14...
Window glass, 16... Reversible motor for power window, 18... Striker, 20... Latch, 4
0... Cable, 44... First switch, 48...
...sliding shaft, 52 ... pinion, 54 ... actuator, 58 ... sector gear, 62 ... clutch,
64... Cable drive gear, 68... Second switch.

Claims (1)

[Scope of utility model registration request] A door latch device having a latch which cooperates with a striker fixed to the vehicle body side to lock the door in a closed position; a power window motor which opens and closes the door glass when energized; a first switch which is closed when the door is closed by the striker coming into contact with the latch and causing the latch to be slightly displaced; when the first switch is in an open position, the output shaft of the motor is connected to a window glass drive member which opens and closes the door glass; and when the first switch is in a closed position, the connection between the output shaft of the motor and the window glass drive member is interrupted; a sliding shaft connecting the output shaft and a cable driving member, an actuator for driving the sliding shaft from a first position to a second position by closing the first switch, a cable for forcibly driving the latch in a fully locking direction relative to a striker by connecting the cable driving member to a motor output shaft and driving the cable driving member, and a second switch which is closed in response to displacement of the cable driving member, wherein the actuator is de-energized by closing the second switch, and the sliding shaft is automatically returned from the second position to the first position.