JPS59220577A - Door lock apparatus for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an improvement in a vehicle door lock device.

The industrial field in which it is used is advantageously applied to vehicles, especially automobiles, which are driven by a driver and have revolving doors.

Vehicle door locking devices include a locking mechanism installed at the free rotating end of the door to lock the door in a closed state, and a locking mechanism and a door lock knob placed on the upper edge of the inner panel of the door to lock or unlock the door. A device consisting of a manual lock operation mechanism that is operated at the same time, and an automatic lock operation mechanism that is disposed below the manual operation lock mechanism and operates the lock mechanism to the locked or unlocked state by a motor drive system using a speed reduction device. is already known.

An example of a door locking device that uses the above-mentioned manual locking mechanism and deceleration device and includes an automatic locking mechanism driven by a motor is disclosed in Japanese Patent Laid-Open No. 105078/1983. As shown in FIGS. 1, 2, and 3, the automatic lock operation mechanism of this device includes a motor M located at the lower part of the case 10 provided inside the door panel, and a shaft 11 pivotally supported at the upper part of the case 10. and G1, which constitutes a speed reduction device disposed between this shaft 11 and the motor M.

G2. It consists of a gear train G consisting of G4 and G3. The final gear G3, which is rotatably loosely fitted to one end of the shaft 11, meshes with the intermediate gear G4 formed integrally with the intermediate gear G2, and is arranged to be rotatable clockwise or counterclockwise by the rotational power of the motor M. has been done.

The final gear G3 has four substantially fan-shaped parts 13, and a pin 14 fixed to one end of the shaft 11 is inserted into this recessed part. The elastic bodies 16, 16 are provided with their protrusions 17 facing each other so as to be able to reciprocate within the same stroke range 1 (see Figure 3). Therefore bin 14
The reciprocating stroke β, that is, the reciprocating movement within the swinging stroke S of the swing arm 15 locks or unlocks the locking mechanism by the vertical movement of the rod 19 connected to the free end of the swing arm 15 shown in FIG. It is the same as the manual operation stroke to operate the state. When the motor M is now rotated, for example, clockwise, this rotational power is transmitted to the final gear G3, causing the final gear G3 to rotate in the same direction as the rotational direction of the motor M, that is, in the clockwise direction. At this time, the protrusion 17 of the elastic body 16 presses the bottle 14 and rotates it clockwise, but the shaft 1
Since the pin 1 is restricted from rotating beyond the stroke β by the stopper 1'8 via the swing arm 15, the pin 14 does not rotate beyond the stroke S and is pressed by the elastic body 16 at the end of the stroke S, causing the motor M to rotate. is locked. At this time, the impact applied to the teeth of each gear due to the inertia of the movable part is absorbed by the elastic body 16.

Here, when the motor inch is turned off, the motor M becomes free, and the final gear G3 is rotated counterclockwise by a bending reaction force based on the energy stored in the elastic body 16, and rotated toward the original position.

In this invention, as mentioned above, in the final gear of the reduction gear,
It has a fan-like play of the same stroke as the swing stroke of the swing arm that locks or unlocks the locking mechanism, and within this play, a return elastic body 16 is provided to return the impact to the deceleration device. It is characterized by

Therefore, in the above device, when restarting, the output shaft 11
The drawback is that there is a response delay before the driving force is transmitted to the motor, and it takes time for the motor to operate.

The technical problem to be solved by the present invention is to minimize the response delay in an automatic mouth/pick operation mechanism driven by a motor using a speed reduction device.

00ゝTechnical Problem 4 Solutionゝ60ゝThe technical means of the present invention 11 are as follows.

(a) A cylindrical cam fixed to the final gear of a reduction gear driven by a motor and having a cam groove carved into the cylindrical circumferential surface is rotatably supported, and (b) The cam groove is attached to the cylindrical cam. The swinging lever, which is made by bending the arm of the drive bin that slides on the cam groove at right angles and fixing the rear wheel perpendicularly to the center axis of the rotating shaft, is adjusted to the swinging radius relative to the rotating shaft in the forward or reverse direction. R1 is a curved groove that is set to generate a constant torque within the range of swing angle ψ, and (c) the swing radius R is the center ψ of the rotating shaft and the cylindrical cam, and when the distance between the shafts is L, L = R. (1+ cos −
) The swing angle ψ is set to a value that satisfies formula 72, and the swing angle ψ is set within a range that does not fall off from the cylindrical cam groove. (d) The drive pin of the swing lever is swinged by external force within the swing range (swing angle). idling grooves are provided in the starting and ending ends of the curved grooves to prevent the cylindrical cam from rotating in a predetermined direction at both ends of the oscillating range; The present invention is a vehicle door lock device having an automatic lock operation mechanism, including an output lever having a connection means with a lock mechanism for operating the lock mechanism in a locked or unlocked state.

The above technical means works as follows.

When the motor rotates, this rotational power is transmitted to the final gear, which rotates the cylindrical cam in the same direction as the motor, and the swing lever swings around the rotation axis with the drive pin that slides into the cam groove, and the rotation axis moves in a predetermined direction. , tensions the continuous means connected to one side of the fixed point with the output lever's rotating shaft, relaxes the continuous means connected to the other side, and unlocks the door on one side of the vehicle connected to the tensioned continuous means. The side door remains locked.

At this time, the drive pin collides with the groove wall of the idle groove at the end of the swing range, stopping the rotation of the cylindrical cam in a predetermined direction, and the cylindrical cam returns to the curved groove due to the reaction of colliding with the drive pin. This can be prevented by causing the cam to idle in the axial direction using an external force, so when the morph is stopped, the drive pin is always at both ends of the curved groove, and when the motor is restarted, it can start swinging through the curved groove without any time delay. .

The present invention produces the following unique effects.

The number of parts is small, it can be formed compactly, and it is easy to assemble.

This reduces the number of parts compared to conventional products because it includes a cylinder-shaped cam and a drive pin in addition to the reduction gear, rotates the rotary shaft with an inter-swing lever, and operates the locking mechanism by rotating the output lever. Since the cylindrical cam can also be made smaller, the overall assembly is easier and smaller.

An illustrated embodiment will be described below to show a specific example of the above-mentioned technical means.

FIG. 4 is a plan view of an embodiment of the automatic lock operation mechanism of the present invention;
FIG. 5 is a sectional view taken along line A--A in FIG. 4.

The vertical cross-sectional shape of the motor shaft of motor M is circular.
It has a modified oval cross-sectional shape with sides canted at planes Ma and Mb, and is supported by support surfaces 102, 103, 104, 105, and 106 integrally molded on case 101 and a back surface 108 of lid 107.

A pinion G1 is fixed to the protruding end of the motor shaft 109,
A gear G2 meshing with the pinion G1 and a gear G3 formed integrally with the gear G2 are supported by the intermediate shaft 110, and the intermediate shaft 1
10 is supported by bearings 111 and 112 of case 101. The final gear G4 that meshes with the gear G3 is formed integrally with the cylindrical cam 115, and has shaft portions 117 and 11 at both ends.
8 is the support mt29.8 provided on the case 101. It is rotatably supported at t3o. A cam tI121, which will be described later, is carved on the circumferential surface of the cylindrical cam, and a swinging lever 119 having a drive pin 120 that slides into the cam groove is rotatably installed between the motor M and the cylindrical cam 1150. It is connected and fixed to the shaft 135 by a continuous pin 136, and an output lever 137 having a continuous means such as a wire for locking or unlocking the locking mechanism is fixed to the tip of the rotating shaft. 141.14 in the diagram
．． 2 is a switch that indicates the rotational position of the rotation shaft (output lever). FIG. 6 is a perspective view showing the arrangement of each member explained in FIGS. 4 and 5. FIG.

7 and 8 show the cylindrical cam 115 and the swing lever 119.
The swing lever 119, which is connected and fixed to the rotating shaft 135 with a connecting pin 136, has an arm 134, and the arm 134 extends perpendicularly to the rotating shaft. Furthermore, it can be bent at right angles and driven.
20, the drive pin slides into the cam groove of the cylindrical cam, and the distance between the center axis of the rotating shaft and the center axis of the cylindrical cam is 1iS1.
It is set at a position with tL.

A cam groove is carved into the cylindrical cam 115.

This cam groove has a curved groove 121 that allows the swing lever to swing about the rotation shaft in the normal or reverse rotation direction of the cylindrical cam and generates a constant torque with respect to the rotation shaft. (See Figure 9). The swing range (swing angle ψ) of the drive pin 120 about the rotation axis (the angle between the XY lines in FIG. 7) is set so that the drive pin does not fall out of the groove, and the swing radius R is The value is set to satisfy R.(1+cosψ)/2. Further, the starting and ending ends of the curved groove 121 are connected to the cylindrical circumferential surface to form walls 1'22, 123 that stop the rotation of the cylindrical cam in a predetermined direction by the drive pin 120 at both ends X and Y of the swing of the drive pin 120, An idle groove 12 is set so that the drive pin can be swung in the axial direction of the cylindrical cam by an external force so that the cylindrical cam does not return to its original state due to reaction after colliding with the drive pin.
4 are provided.

FIG. 9 is a front view showing the relationship between the curved groove 121 and the swing lever 119. When the drive pin 120 reaches the swing end X or Y, the bottom of the swing lever arm turns on the switch 141 or 142 to mark the position.

[Brief explanation of drawings]

1, 2, and 3 are cross-sectional views of a conventionally known automatic locking mechanism, FIG. 4 is a plan view of an embodiment of the automatic locking mechanism according to the present invention, and FIG. 6 is an exploded perspective view, FIG. 7 is an enlarged partial view of the main part, FIG. 8 is an enlarged sectional view of the main part, and FIG. 9 is a partial enlarged view of the main part. It is. M... Motor, 115... Cylindrical cam, 119... Rocking lever, 120...
Drive pin, 121...Cam groove (curved groove), 12
4... Idle groove, 135... Rotating shaft, 1
37... Output lever, G1-G4...
Gears of the reduction gear. Patent applicant: Kokusan Metal Industry Co., Ltd. Figure 1■0 Figure 4 II+ Figure 5

Claims (1)

[Scope of Claims] A door/lock mechanism disposed at a rotatable end of a door attached to a vehicle body so as to be openable and closable, and locking the door in a closed state;
. (a) A cylindrical cam fixed to the final gear of a reduction gear driven by a motor and having a cam groove carved into the cylindrical circumferential surface is rotatably supported, and (b) The cam groove is attached to the cylindrical cam. The 3° swing lever has a drive pin that slides in the cam groove in the forward or reverse direction, and has a curved groove that generates a constant torque within the range of swing radius R1 and swing angle ψ relative to the rotating shaft. (c) The above swing radius R is the center ψ of the rotating shaft and the cylindrical cam. When the axial distance is L, L=R・(1+ cos −
) Set the swing angle to a value that satisfies formula 72, and set the swing angle within a range that does not fall out of the cylindrical cam groove. d) Set the drive pin of the swing lever that is in the middle position of the swing angle to idle in the external force swing direction. - l. An idling groove for stopping the rotation of the cylindrical cam in a predetermined direction at both ends of the swing angle extends in the axial direction at the starting and ending ends of the curved groove, and e) A locking mechanism fixed to the tip of the rotating shaft. A vehicle door lock device comprising an automatic lock operation mechanism and an output lever having a means of communication with a lock mechanism for locking or unlocking the door.