JP2580954Y2 - Easy Closer Device for Vehicle Door - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easy closer device which enables a vehicle door to be closed smoothly.

[0002]

2. Description of the Related Art A slide door for opening and closing a side opening of a van type vehicle requires a large force at the time of closing the door due to a large size and a guide rail which is greatly bent inward at a door closing end. I do.

Therefore, the door is lightly closed, and it is detected that the latch plate of the door is in the half-latch state with the striker at the opening edge, and the latch plate is rotated to the full lock position by the motor. An easy closer device has been proposed.

An example will be described below. Referring to FIG. 6, a motor 7 is rotated forward and backward by a control device (not shown), and a circular housing 71 of a reduction mechanism coupled to an output shaft has a rotation shaft 72 at the center. The cam member 1 is mounted on the rotating shaft 72.

[0005] The cam member 1 is a substantially semicircular plate having an outer periphery serving as a cam surface 1a. The cam surface 1a is farthest from the center of the rotating shaft 72 at one point X (full stroke position) of the large-diameter arc surface, and is closest to the center of the rotating shaft 72 on the small-diameter arc surface. I have. The detection of the full stroke position X and the original position Y is performed by the housing 7
This is performed by a cam position detecting switch 4 provided on the rotating shaft 72. The detecting switch 4 is constituted by a micro switch which operates by contacting a cam (not shown) formed on the rotating shaft 72.

As shown in FIG. 7A, an easy closer device using the cam member 1 has one end 3 on a cam surface 1a.
1 has a fan-shaped lever member 3 which pivots about a support shaft 33 in contact with the lever member 3. One end 31 of the lever member 3 contacts the Y point in the state shown in FIG. Reference numeral 32 is located below and below the operation arm 21 extending from the latch plate 2.

The latch plate 2 has a substantially U-shape that opens downward, and a striker 91 at the body opening edge penetrates into the recess. FIG. 7A shows a half-latched state, in which a pole plate 92 is engaged with one of two branches of one end 22 of the latch plate 2. The pole plate 92 is operated by a door handle.

The operation of the cam position detection switch 4 is conventionally as shown in FIG. 9, and is turned off in a relatively narrow angle range including the original position Y and turned on in the remaining angle range including the full stroke position X.

The control device for driving the motor 7 starts normal rotation of the motor 7 when the slide door is closed and the latch plate 2 is in the half-latched state, and when the cam member 1 rotates with this normal rotation (FIG. 7 (1) arrow) The lever member 3 rotates counterclockwise to push up the operation arm 21, and in the process of reaching the full stroke position in FIG. 7 (2) where one end 31 of the lever member 3 contacts the X point. The two ends of the latch plate 2 move beyond the pole plate 92 to be in a full lock state. The cam member 1 is further rotated, and the lever member 3 rotates clockwise. When the cam member 1 returns to the vicinity of the original position Y, the cam position detection switch 4 is turned off, and the motor 7 is stopped.

[0010]

In the above-mentioned conventional apparatus, when the door handle is operated to stop the door closing and open the door again, the control device turns the cam position detecting switch 4 on. Then motor 7
And the cam member 1 is returned to the original position. However,
When the cam member 1 is rotating beyond the full stroke position X (FIG. 8 (1)), when the cam member 1 is reversed (arrow in the drawing), the cam member 1 passes through the full stroke position X again. 2 is once turned in the full lock direction, and there is a problem that the feeling of opening the door is impaired.

If the cam position detecting switch 4 has a tolerance, the switch 4 remains on immediately after the one end 31 of the lever member 3 reaches the small-diameter arc surface as shown in FIG. There are cases. Even if the door handle is operated in this state, the reverse rotation of the cam member 1 is prevented by the cam shape. When the cam member 1 rotates forward due to the subsequent closing of the door, the detection switch 4 is immediately turned off, and the full stroke position is reached. There is a problem that the cam member 1 stops without passing through X and the full lock operation is not performed.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an easy-closer device for a vehicle door that always operates reliably without deteriorating the feeling of opening the door.

[0013]

The construction of the present invention will be described. A rotatable cam member 1 and a cam surface 1 of the cam member 1 are described.
a at the full stroke position X of the cam member 1 where the cam surface 1a is farthest from the center of rotation.
A lever member 3 for pushing and rotating the latch plate 2 of the vehicle door to the full lock position, and a cam position detection for detecting the full stroke position X of the cam member 1 and an original position Y where the cam surface 1a is closest to the center of rotation. Means 4, a half-latch detecting means 5 for detecting a half-latch state of the latch plate 2, a handle detecting means 6 for detecting an operation of a door handle, and a cam member 1 when the half-latch state is detected. The normal rotation operation is again performed from the position Y through the full stroke position X to the original position Y. When the operation of the door handle is detected during the operation from the original position Y to the full stroke position X, the cam member 1 is rotated. And a cam member driving means 7 for causing a reverse rotation operation to the position Y.

[0014]

In the above construction, the full stroke position X of the cam member 1 is detected, and the reverse operation is performed only when the door handle is operated between the original position Y and the full stroke position X. However, the full stroke position X is not passed again during the reverse rotation operation, and the feeling when the door is opened is prevented from being deteriorated.

After the full stroke position X is exceeded, the cam member 1 remains at the original position Y even if the door handle is operated.
When the half-latch state due to the subsequent door closing is detected, the forward rotation of the cam member 1 from the original position Y is started again, and the latch plate 2 is reliably rotated to the full lock position. .

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The mechanical structure of an easy closer device is the same as that of the conventional example described above, and the following description will focus on the differences.

FIG. 1 shows a configuration of a control device 8 for driving the motor 7 to rotate forward and backward. The control device 8 has a logic circuit 81 including a computer. The logic circuit 81 has a terminal T
1, DC power is supplied through T2, and terminals T5,
A cam position detection switch 4, a half latch detection switch 5, and a handle detection switch 6 are input-connected via T6, T7 and buffers 82A, 82B, 82C, respectively.

A pair of relays 83A and 83B are provided,
Through the contact, a current is supplied to the motor 7 connected between the terminals T3 and T4. The coils of the relays 83A and 83B are connected to buffers 85A and 85B by the output signal of the logic circuit 81.
The motor 7 is selectively energized via 5B, and the motor 7 is rotated forward or backward.

As shown in FIG. 2, the operation of the cam position detecting switch 4 is turned on at a position slightly beyond the original position Y in the normal rotation direction, and turned off after passing the full stroke position X.
This is shown in FIG. 3 together with the amount of movement of the lever member 3 (FIG. 7).

FIG. 4 shows an operation procedure of the control device 8 using the cam position detection switch 4. When the operation condition is satisfied in step 10, the operation proceeds to step 11 and the subsequent steps to start the operation. The operating condition is that the half-latch detection switch 5 is turned on when the door is closed, and the handle detection switch 6 is turned on when the door handle is released.

If the cam position detection switch 4 is on in step 11, the motor 7 is rotated backward until it is turned off (steps 17 and 18) to return the cam member 1 to the original position Y. When the cam position detection switch 4 is off and the motor 7
Is started (step 12), and when the cam member 1 reaches the full stroke position X and the detection switch 4 is turned off again from on (step 14), thereafter, regardless of the state of the handle detection switch 6, Reverse rotation of the motor 7 is prohibited, and normal rotation of the motor 7 is continued until the cam position detection switch 4 is turned on (step 16). As a result, the cam member 1 reaches the original position Y, and goes a little too far.
Therefore, in steps 19 to 21, the cam position detection switch 4
The motor 7 is rotated reversely until the cam member 1 is turned off.
To its original position.

If the handle detection switch 6 is turned off before step 14, that is, before reaching the full stroke position X (step 13), it is determined that the door opening operation has been performed and the routine proceeds to step 19, where the motor 7 is immediately turned on. To return the cam member 1 to the original position Y (step 2).
0,21).

FIG. 5 shows a time chart of this operation. When the handle detection switch 4 is turned off in each of the areas A to E in the figure, the motor is driven as follows. A: In the stopped state. B: Stop. C: Shift to reverse. D: Forward rotation is continued. E: Continue reversing.

[0024]

As described above, according to the easy closer device of the present invention, the reverse rotation of the cam drive motor is not performed after the cam member reaches the full stroke position, so that the door opening feeling is not impaired. Further, since the cam member is always returned to the original position, the full lock operation is reliably performed when the door is closed.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a control device of an easy closer device.

FIG. 2 is a conceptual diagram illustrating an operation range of a cam position detection switch.

FIG. 3 is a time chart showing an operation range of a cam position detection switch.

FIG. 4 is a flowchart showing the operation of the control device.

FIG. 5 is a time chart for explaining the operation of the easy closer device.

FIG. 6 is a side view of a motor provided with a cam member.

FIG. 7 is a schematic front view of the mechanical structure of the easy closer device.

FIG. 8 is a schematic front view of a mechanical structure showing a defect of the conventional easy closer device.

FIG. 9 is a conceptual diagram showing an operation range of a conventional cam position detection switch.

[Explanation of symbols]

Reference Signs List 1 cam member 1a cam surface 2 latch plate 3 lever member 4 cam position detecting means (cam position detecting switch) 5 half latch detecting means (half latch detecting switch) 6 handle detecting means (handle detecting switch) 7 cam member driving means (motor 8) Control device

Claims (1)

(57) [Scope of request for utility model registration] A latch member of a vehicle door is fully opened at a full stroke position of a rotatable cam member and a cam member which is actuated by being brought into contact with a cam surface of the cam member. A lever member for pushing and rotating to a lock position, cam position detecting means for detecting the full stroke position of the cam member and an original position where the cam surface is closest to the center of rotation, and detecting a half-latched state of the latch plate. A half-latch detecting means, a handle detecting means for detecting an operation of a door handle, and when the half-latch state is detected, the cam member is rotated forward from the original position to the original position again through the full stroke position, and When the operation of the door handle is detected during the operation from the original position to the full stroke position, the cam member is reversely operated to the original position when the operation of the door handle is detected. An easy closer device for a vehicle door, comprising: a cam member driving means;