JPH0421720Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used in a seat belt device for protecting occupants in vehicle emergencies, and is an automatic release buckle control that automatically releases the tongue plate from the buckle device when the passenger exits the vehicle. Regarding equipment.

[Prior Art] In this type of automatic unbundling buckle control device, a limit switch detects the opening and closing of a door, and when it is detected that the door is opened, the tongue plate 3
0 is automatically dissociated from the buckle device (Japanese Patent Laid-Open No. 60-31701).

[Problem that the invention aims to solve] However, if a third party outside the vehicle accidentally opens the door while the occupant closes the door and wears the seatbelt, the seatbelt will be released and the occupant will You have to put your seatbelt on again. Furthermore, when the occupants wear their seat belts, they cannot do so if the door is left open.

In view of the above facts, the present invention provides an automatic release buckle control device that allows the seat belt to be fastened even when the door is open without the seat belt being unfastened inadvertently. With the goal.

[Means for solving the problem] In the automatic dissociation buckle control device according to the present invention,
A door opening/closing detector detects the opening/closing of the door, an inside door handle operation detector detects the operation of the inside door handle, a buckle engagement detector detects engagement of the tongue plate with the buckle device, and a buckle engagement detector that detects the engagement of the tongue plate with the buckle device. An actuator that disengages the engagement with the buckle device and a tongue plate that disengages the tongue plate when it detects that the tongue plate is engaged with the buckle device, the inside door handle is actuated, and the door is open. control means for controlling the actuator to disengage and disengage the buckle device.

[Operation] Even if a third person outside the vehicle opens the door while the occupant is wearing a seat belt and the door is closed, the inside door handle will not operate, so the tongue plate will not separate from the buckle device.

Further, when the occupant wears a seat belt with the door open, the inside door handle is not activated, so even if the tongue plate is engaged with the buckle device, the engagement will not be disengaged.

[Example] First, an example of a buckling device to be controlled will be described.

As shown in FIGS. 1 to 3, one end of an anchor plate 14 is fixed to a portion of the buckle base 10 by a rivet 12. As shown in FIGS. A circular hole 16 is bored in the other end of the anchor plate 14, and the other end of the anchor plate 14 is fixed to the vehicle body with a mounting bolt (not shown). With this, anchor plate 1
4. The buckle base 10 is designed to stand up from the vehicle body.

At the other end of the buckle base 10, a pair of leg plates 18, 20 are bent at right angles from both sides and extend parallel to each other.
Projecting pieces 22 and 24 are formed from the tip of 0 at right angles in a direction that approaches each other.

The buckle base 10 also has a bent portion 26 at the tip of the opposite end to which the anchor plate 14 is attached, and one end of the lock plate 28 is inserted into this bent portion 26. This lock plate 28 is pivotable around the bent portion 26, and the intermediate portion thereof includes the protruding piece 22,
24 and the buckle base 10.

A tongue plate 30 can be inserted into the buckle base 10 in correspondence with the lock plate 28 (in the direction of arrow A in FIG. 1). This tongue plate 30 has an occupant restraining webbing 32 secured to one end, and an engagement opening 34 formed near the other end.

This tongue plate 30 has a buckle base 10
It is adapted to engage the lock plate 28 when inserted therein. That is, the lock plate 28
A plate spring 38 is interposed between the buckle base 10 and the engagement claw 36 into the engagement opening 34 of the lock plate 28 inserted into the buckle base 10.
enters and prevents the tongue plate 30 from being pulled out.

A pair of release arms 40 protrude from the lock plate 28 and correspond to an inclined surface 44 formed at one end of the slide button 42. The slide button 42 is movable along the leg plates 18 and 20 in the insertion direction of the tongue plate 30, and
It is possible to move from the solid line state to the two-dot chain line state. In the state shown by the solid line in FIG. 1, the inclined surface 44 does not apply any rotational force to the release arm 40, but when the inclined surface 44 moves to the right to the state indicated by the two-dot chain line in FIG. The lock plate 28 is rotated clockwise in FIG. 1, and the engagement pawl 36 is pulled out from the engagement opening 34 to release the engagement with the tongue plate 30.

A recess 46 is formed in the slide button 42 facing the buckle base 10.
A slide piece 48 is arranged inward. This slide piece 48 is pivotally supported to an arm 52 by a pin 50, and the other end of the arm 52 is pivotally supported by a pin 54 at a location eccentric from the central axis of the worm wheel 56. This worm foil 56 is connected to pin 5.
8 to a bracket 60, and this bracket 60 is fixed to the buckle base 10.

Therefore, when the worm wheel 56 rotates, the pin 54 rotates around the axis of the worm wheel 56, so the arm 52 moves the slide button 42 to the right in FIGS. 1 and 2 via the pin 50 and the inner peripheral surface of the recess 46. It is designed to generate a force that moves it to.
A compression coil spring 62 is interposed between the slide piece 48 and the inner peripheral surface of the recess 46 so that the slide button 42 returns to the solid line state in FIG. 1 when no moving force is applied by the arm 52. There is.

A worm gear 64 is engaged with the worm wheel 56, and one end of the worm gear 64 is supported by a bracket 60, and the other end is supported by the bracket 60 via the bracket 66.

Worm gear 64 protruding from bracket 66
A spur gear 68 is fixed to the central shaft of the bracket 66, and meshes with a small spur gear 70 which is pivotally supported by the bracket 66. This small spur gear 70 is secured to an output shaft 74 of a motor 72 which is secured to the bracket 60. Therefore, the motor 72 transfers its rotational force to the small spur gear 7.
0, combination of spur gear 68 and worm gear 64,
After being decelerated by the combination of the worm wheels 56, the rotational force of the worm wheels 56 is transmitted.

As shown in FIG. 3, a protrusion 100 is provided on the small diameter portion of the worm wheel 56, and correspondingly, an initial position detection switch 1 is provided on the bracket 60.
02 is provided. This initial position detection switch 102 is pressed by the protrusion 100 only in the state shown in FIGS. 1 and 2. A buckle switch 108 is screwed onto the buckle base 10, and when the tongue plate 30 engages with the buckle device, the tip of the tongue plate 30 presses the buckle switch 108 to operate it.

FIG. 4 shows a detector disposed on the door 110, which detects whether the door is opened or closed by the door switch 112. Further, the operation of the inside door handle 114 is detected by an inside door handle switch 116.

Next, the control circuit of the buckle device will be explained with reference to FIG.

A door switch 112, an inside door handle switch 116, a buckle switch 108, and a relay coil 118 are connected in series to the battery 117. This door switch 112 closes when the door is opened, and the inside door handle switch 1
16 is closed when the inside door handle 114 is pulled, and the buckle switch 108 is closed when the tongue plate 30 is engaged with the buckle device. For the series connection of the door switch 112 and the inside door handle switch 116,
Relay contacts 118A, which are closed when the relay coil 118 is energized, are connected in parallel. The battery 117 also includes a relay contact 118B that closes when the relay coil 118 is excited, and a motor 72.
are connected in series. This relay contact 118B
An initial position detection switch 102 is connected in parallel.

Next, the operation of this embodiment configured as described above will be explained.

When the passenger inserts the tongue plate 30 into the buckle base 10 regardless of whether the door is opened or closed after boarding the vehicle, the engagement pawl 36 will engage with the engagement opening 34 due to the biasing force of the leaf spring 38, so the tongue plate 30 will be securely attached to the buckle device. The crew member is secured to the webbing 3.
2 can be installed. In this case, the buckle switch 108 is closed, but the inside door handle switch 116 is closed, so the relay coil 118 remains demagnetized, and the initial position detection switch 102 is closed in the state shown in FIG. Therefore, the rotation of the motor 72 remains stopped.

In the above condition, a third party outside the vehicle may accidentally open the door 11.
0, the door switch 112 is closed but the inside door handle switch 116 remains open, so the relay coil 118 remains demagnetized and the rotation of the motor 72 remains stopped. Therefore, in such a case, the tongue plate 30 will not be unintentionally separated from the buckle device. Furthermore, even if the inside door handle 114 is operated intentionally or accidentally with the door locked, the inside door handle switch 116 will close, but the door will not open, so the door switch 112 will not close.
Relay coil 118 remains demagnetized;
The tongue plate 30 is not released. That is,
Even if the passenger accidentally touches the inside door handle 114 without intending to get off the vehicle, and the inside door handle 114 is activated, the tongue plate 3 will not open unless the door 110 actually opens.
0 is never dissociated.

In the event of a vehicle emergency, the occupant is restrained by this webbing 32. In this case, even if the door 110 is opened inadvertently, the inside door handle switch 116 is open, so the relay coil 11
8 remains demagnetized, and the rotation of the motor 72 also remains stopped. Therefore, the safety of the occupants is ensured.

When exiting the vehicle, the occupant pulls on the inside door handle 114 to release the lock and open the door 110. At this time, inside door handle switch 1
16. Door switch 112 is closed. Since buckle switch 108 is closed, relay coil 118 is energized. As a result, relay contact 11
8A is closed, so even if the occupant releases the inside door handle 114 and the inside door handle switch 116 opens, the relay coil 118 remains energized. Due to the excitation of the relay coil 118, the relay contact 118B is also closed, and the motor 72
rotates.

The rotation of this motor 72 is decelerated and transmitted to the worm wheel 56. Therefore, the arm 52 moves the slide piece 48 to the right in FIGS. This slide piece 48 moves the slide button 42 along the leg plates 18, 20 via the inner peripheral surface of the recess 46, so that the inclined surface 44 rotates the lock plate 28 clockwise in FIG. 1 via the release arm 40. Then, the engaging claw 36 is pulled out from the engaging opening 34. With this, tongue plate 3
0 can be pulled out from the buckle base 10, and even if the tongue plate 30 is pulled out, the buckle switch 108 is opened, the relay coil 118 is demagnetized, and the contact 118B is opened, the motor 72 does not protrude as the worm wheel 56 rotates once. 100 rotates until the initial position detection switch 102 is opened.
When the worm wheel 56 rotates once and the power to the motor 72 is cut off, the slide button 42 moves to the first,
Return to the state shown in Figure 2. In this way, the state in which the occupant wears the webbing is automatically released.

Therefore, the occupant must use the inside door handle 1.
The webbing can be removed by simply pulling 14 and releasing the door, which is particularly convenient for physically disabled passengers.

In such an automatic release state, the compression coil spring 62 interposed between the slide piece 48 and the slide button 42 does not exert any force that impedes the driving force of the motor 72, so the driving force of the motor 72 is ensured. is transmitted to the slide button 42 as a moving force.

Furthermore, when the occupant manually releases the webbing, the slide button 42 may be moved against the biasing force of the compression coil spring 62. That is, since the slide piece 48 is stopped, the slide button 42 moves to the right in FIG. 1 while compressing the compression coil spring 62, and the inclined surface 44 rotates the lock plate 28 clockwise via the release arm 40. I will let you do it.

[Effect of the invention] In the automatic dissociation buckle control device according to the invention,
If it is detected that the tongue plate is engaged with the buckle device, the inside door handle is activated, and the door is open, the tongue plate is disengaged from the buckle device. Therefore, even if a third party outside the vehicle inadvertently opens the door while the occupant is wearing a seatbelt and the door is closed, the tongue plate will not separate from the buckle device unless the inside door handle is operated. Furthermore, even if the inside door handle is operated with the door locked, the tongue plate will not disengage from the buckle device unless the door is opened, and there is no need to re-engage the tongue plate with the buckle device as in the past. There isn't. In addition, even if the tongue plate is engaged with the buckle device with the door open, it will not disengage unless the inside door handle is activated, so special attention must be paid to when to fasten the seat belt. It has the excellent effect of not causing any damage.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of the buckle device that is the object of control of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is an exploded perspective view of Fig. 1, and Fig. 4 is a detection FIG. 5 is a diagram of the automatic unbundling control circuit. 30...Tongue plate, 72...Motor, 1
02... Initial position detection switch, 108... Buckle switch, 112... Door switch, 114
...Inside door handle, 116...Inside door handle switch.

Claims (1)

[Scope of utility model registration request] a door opening/closing detector that detects the opening and closing of the door; an inside door handle operation detector that detects the operation of the inside door handle; a buckle engagement detector that detects the engagement of the tongue plate with the buckle device; An actuator that disengages the engagement with the buckle device, and an actuator that disengages the tongue plate when it detects that the tongue plate is engaged with the buckle device, the inside door handle is actuated, and the door is open. An automatic release buckle control device comprising: control means for controlling an actuator to disengage from a buckle device.