JPH0417735Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automobile door lock device, and particularly to an improvement in the striker structure thereof.

<Conventional technology> In order to prevent the intrusion of rainwater, etc., a sealing member called a weather strip made of synthetic rubber is provided between the door and the vehicle body. In order to avoid wind noise and wind leakage noise, there is a tendency to use weather strips made of materials with relatively high pressure reaction force.
Therefore, when the door is closed, this pressing reaction force prevents the door from completely locking, increasing the risk of the door being left ajar. In order to obtain a completely locked state, it is necessary to close the door with a strong force to overcome the reaction force of the weather strip, which is inconvenient.Also, if the door is closed suddenly, the sound This may cause discomfort to passengers due to changes in the air pressure inside the vehicle.

In order to solve this problem, it is conceivable to move a striker provided on the vehicle body side by some means so as to engage with a locking member attached to the door side and maintain the closed state of the door. In other words, when the door is closed, the door can be locked before the weather strip's pressure reaction force is large.
After the striker is positioned on the outside in advance and the locking member is fully engaged with the striker in that state, the striker is forcibly moved to a position where the weather strip is sufficiently deformed and the sealing condition is complete. It is possible to obtain a completely closed door by doing this.

However, in order to retract the striker from the locked state against the pressure reaction force of the weather strip, a considerably strong force is required, and the striker must be moved inside a limited space inside the body panel, such as the center pillar of a four-door car. It is extremely difficult to incorporate a mechanical device that can drive a striker into a machine.

<Problems to be solved by the invention> In view of the problems of the prior art, the main purpose of the present invention is to solve the following problems in an automobile door lock device:
To provide a small and simple striker structure capable of obtaining a reliable locking state without requiring an excessive closing force.

<Means for Solving the Problems> According to the present invention, this object includes a locking member mounted on the door side and a striker provided on the vehicle body side so as to be engageable with the locking member. A striker structure in an automobile door lock device, wherein the striker is movable along the door opening/closing direction, and further includes a cam that is driveably engaged with the striker, and a cam that is connected to the shaft of the cam. This is achieved by providing a striker structure characterized by comprising a worm reducer, a flexible transmission member that transmits rotational force to the worm reducer, and an actuator that generates the rotational force.

<Operation> As described above, as a means of moving the striker provided on the vehicle body side to engage with the locking member on the door side of the automobile, a worm reducer is used in the cam rotation mechanism, so that the input shaft and the output shaft are orthogonal to each other. This makes it possible to downsize the device. Furthermore, by transmitting the rotational force of the actuator to the worm reducer using a flexible connecting rod, it becomes possible to separate the relatively large actuator from the mounting portion of the striker.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, a locking device 4 is attached to the space inside the door defined inside the door rear end surface 6 formed by bending the door inner panel 1a toward the door outer panel 1b, and A U-shaped striker 5 is attached to the front end surface 8 of the center pillar or rear pillar, which is a part of the door 3, via a base plate 9 in order to engage with the locking device 4 and keep the door closed. A weather strip 2 is attached to the corner of the rear end face 6 of the door, and when the door is closed, the weather strip 2 comes into elastic contact with the body outer panel 3 to provide the required sealing effect.

A boss 5a having a rectangular cross section is provided on the base 5b of the striker 5 and protrudes toward the vehicle body, and projects into a horizontally long rectangular guide hole 9a bored in a substantially central portion of the base plate 9. Furthermore, a cam follower 10 that defines a rectangular recess 10a by bending the left and right edges 10b of a rectangular plate toward the vehicle body.
is a boss 5 that penetrates and protrudes from the guide hole 9a of the base plate 9 toward the inside of the front end surface 8 on the vehicle body side.
It is fixed to the free end of a with a countersunk bolt 14. As a result, the cam follower 10 and the striker 5
It is prevented from coming off in the front and rear directions by the base plate 9, and is integrally movable in the left and right direction within a range until the boss 5a comes into contact with the left and right ends of the guide hole 9a. Furthermore, a sealing member 7 made of a synthetic resin with a relatively low coefficient of friction, which may be a fluorocarbon resin, is sandwiched between the base plate 9 and the base 5b of the striker to prevent dust and water droplets from entering the inside of the body panel. At the same time as preventing infiltration,
This has the effect of reducing the frictional resistance when the striker 5 slides in the horizontal direction.

The cam follower 10 has a pair of inner wall surfaces rising in a direction perpendicular to the sliding direction from its left and right edges 10b in order to receive a cam, which will be described later. A lining 17 made of resin is attached.

Furthermore, the worm reducer 16 has its output shaft 1
The worm gear 20 is attached to the inside of the body outer panel 3 via a mounting bracket 15 with mounting bolts (not shown) so that the worm gear 2 faces forward and the worm gear 20 faces substantially vertically. A cam 11 is integrally fixed to the free end of the output shaft 12 with a set screw 13, and the cam is received in the recess 10a of the cam follower 10.
The cam 11, as clearly shown in FIGS. 2a and 2b, has a heart shape in which the long axes of two oval cams are overlapped at right angles.

As clearly shown in FIG. 3, a worm wheel 21 and a worm gear 20 are incorporated inside the worm reducer 16. The input shaft of the worm gear 21 and the drive shaft of the electric motor 23 are
They are connected by a flexible connecting rod 22, and the rotational force of the electric motor 23 is transmitted to the cam 11 via the worm gear 21 and the worm wheel 20 by this connecting rod.

When assembling such a structure, first,
After attaching the worm reducer 16 to the bracket 15, the cam 11 is fixed to the output shaft 12 protruding through the bracket with a set screw 13, and then the striker 5 and the cam follower 10 are fixed with a countersunk bolt 14 so as to sandwich the base plate 9. stick. Then, with the cam follower 10 and the cam 11 engaged, the bracket 15 is screwed onto the base plate 9 with bolts (not shown), and this is attached to the front end face 8 of the pillar with the base plate 9 as one assembly. good. In this way, the worm reducer 16 with the cam portion attached is inserted into the body panel defined by the body outer panel 3 and the body inner panel 19 through the window 8a provided in the front end face 8 of the pillar, and the worm reducer 16 with the cam portion attached is inserted into the body panel defined by the body outer panel 3 and the body inner panel 19, and In this case, only the base plate 9 and the striker 5 are exposed.

Next, the operation of the above embodiment will be explained.

First, when the door is opened, the cam is oriented such that the striker 5 is located on the right side in FIG. 1, that is, on the outside of the vehicle body (FIG. 2a). When the door is closed from this state, since the striker 5 is located on the outside, the locking device 4 is closed before the weather strip 2 provided on the door side is pressed and deformed.
The striker 5 engages with the striker 5 and becomes completely locked. In this state, the weather strip is merely in contact with the vehicle body, and the airtightness of the interior of the vehicle may not be sufficient. In addition, there is a gap between the door outer panel 1b and the body outer panel 3, which is indicated by the dimension Δl, and although the door appears to be in an ajar state, it is in a completely locked state, and the reaction force of the weather strip is large. Since this is before the door starts working, the operating force required to achieve such a closed state is extremely small.

When the completion of locking is detected by, for example, a limit switch (not shown) and a driving command is given to the electric motor 23, the cam 11 is rotated in the direction shown by arrow B in FIG. 2a, and in response to the rotation of the cam, The striker 5 together with the cam follower 10 is forcibly slid along the guide hole 9a in the direction shown by arrow A in FIG. 1, that is, toward the interior of the vehicle. When the limit switch detects the completion of the striker's sliding or the completion of the cam's rotation and stops the motor, the door will be retracted to the position shown by reference numeral 1' in Fig. 1, and the weather strip 2 will also be fully retracted. It deforms under pressure and a sealed state is obtained.

Next, when the door is opened, the limit switch detects the opening, and the cam 11 rotates in the direction shown by arrow C in FIG. Realize.

Note that the actuator for rotating the cam is not limited to the above-mentioned electric motor; for example, a linear sliding cylinder combined with a rack-pinion,
In some cases, it may be effective to use a hydraulic motor or the like.

<Effects of the Invention> As described above, according to the present invention, the locking device locks onto the striker before the weather strip is completely deformed by pressure, and the striker is driven by the cam. In particular, since a worm reducer is used, the input shaft and the output shaft can be orthogonal to each other, so that the axial dimension of the rotation shaft of the cam can be made extremely short.
Furthermore, by connecting the drive source and the input shaft of the worm reducer using a flexible connecting rod, the drive source can be placed in a location with sufficient dimension, which is extremely effective in reducing design constraints. effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of a striker according to the present invention. Figure 2a shows the orientation of the cam in the initial state.
It is an arrow view from a line. FIG. 2b is a diagram similar to FIG. 2a showing the orientation of the cam when the door is fully closed. FIG. 3 is a perspective view showing only the device portion of the embodiment shown in FIG. 1 in a partially transparent manner. 1a... Door inner panel, 1b... Door outer panel, 2... Weather strip, 3... Body outer panel, 4... Lock device, 5... Striker, 5a... Boss, 5b... Base, 6... …
Door rear end face, 7... Seal member, 8... Pillar front end face, 8a... Window, 9... Base plate,
9a... Guide hole, 10... Cam follower, 10
a... Recess, 10 b... Left and right edges, 11... Cam, 12... Drive shaft, 13... Set screw, 14
...Countersunk bolt, 15...Bracket, 16...Worm reducer, 17...Lining, 19...Body inner panel, 20...Worm gear, 21
... Worm wheel, 22 ... Connecting rod, 23 ...
...Electric motor.

Claims (1)

[Claims for Utility Model Registration] A striker structure in an automobile door lock device having a lock member mounted on the door side and a striker provided on the vehicle body side so as to be engageable with the lock member, comprising: The striker is movable along the door opening/closing direction, and further includes a cam drivingly engaged with the striker, a worm reducer connected to the shaft of the cam, and a rotational force applied to the worm reducer. A striker structure characterized by comprising a flexible transmission member for transmitting power and an actuator for generating rotational force.