JPS6031701A - Buckle apparatus - 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 [Field of Application of the Invention] The present invention relates to the attachment of webbing for restraining an occupant, which is used to attach a seat belt for protecting an occupant in a vehicle emergency.

This invention relates to a buckle device used for release.

[Background Art] In a seat belt device, after an occupant is seated on a seat, a tongue plate attached to an end of one occupant restraining webbing is engaged with a buckle device, thereby putting the webbing in a fitted state.

Therefore, when the passenger exits the vehicle, he or she must manually operate the release knob attached to the puncture device to disengage the tongue plate. In addition, in order to eliminate the need to manually release the buckle device, a structure may be considered in which a Henlenoid is provided in the buckle device and the tongue plate is pulled out from the Pankle device by activating this solenoid upon receiving a signal that the door is opened. .

However, a buckle device that accommodates a solenoid within the buckle device that is large enough to generate a force sufficient to release a locking plate that engages a tongue plate would be oversized.

[Object of the Invention] Taking the above-mentioned main points into consideration, an object of the present invention is to obtain a buckle device that can automatically release the engagement of the tongue plate.

[IIIJ composition of the invention] In the buckle device according to the present invention, a buckle base lock plate is attached to the vehicle body and is used for locking with the inserted tongue plate, and this lock plate is moved in the direction from the tongue plate to the floor by a motor. It is designed to be driven by

Embodiment 1 of the Invention As shown in FIGS. 1 to 3, in the first embodiment of the present invention, one end of the anchor play 14 is fixed by a helical 12 at one end of the buckle base 10. 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). This allows the anchor plate 14 and buckle base 10 to stand up from the vehicle body.

At the other end of the buckle base 10, a pair of 11
111 plates 18 and 20 are bent at right angles and extend parallel to each other, and from the tips of these leg plates 1B and 20, projecting pieces z2.
24 is formed.

The buckle base 10 also has four bent portions 26 on the opposite end to which the anchor plate 14 is attached. One end of the lock plate 28 is inserted into this bent portion 26. Ill'Iru. This lock plate 2B is pivotable around the bending portion 26, and its intermediate portion is disposed between the protruding piece 22.24 and the buckle base IO.

A tongue plate 30 can be inserted into the buckle base lO in correspondence with the lock plate 2B (in the direction of the arrow in FIG. 1), and an occupant restraint webbing 32 is locked at one end of the tongue plate 30. , a retaining opening 34 is formed near the other end.

This tongue plate 30 is adapted to be engaged with the four-hand plate 28 when inserted into the buckle base IO. That is, the lock plate 28 is connected to the buckle base 10.
A plate spring 38 is interposed between the engagement opening 34 of the lock plate 2B inserted into the buckle base 10.
The engaging claw 36 is inserted into the tongue plate 30 to prevent the tongue plate 30 from being pulled out.

A pair of release arms 40 protrudes from the lock plate 28 and is formed at one end of a slide button 42.
Each side has 44 sides sealed. Slide button 42 is on leg plate 1
8.20 in the insertion direction of the tongue play) 30, and can move from the π state in Figure 1 to the state shown by the two-dot chain line.In the solid line state in Figure 11, the tongue play Although the surface 44 does not apply any rotational force to the release arm 40, when it moves rightward to the state indicated by the two-dot chain line in Figure t51, the tin #1 surface 44 engages with the release arm 40 and locks the lock plate 28! The engagement claw 36 is pulled out from the engagement opening 34 by rotating clockwise in the IS1 diagram to release the engagement with the tongue plate 30.

The slide button 42 has four portions 46 formed facing the buckle base 10, and a slide piece 48 is disposed within the recess 46. This slide piece 48 is pivotally supported by a pin 50 to an arm 52.
The other end is pivotally supported by a pin 54 at a location eccentric from the central axis of the worm wheel 56. This warm foil 56
is pivotally supported by a pin 58 to a bracket 60, and this bracket 60 is fixed to the buckle base IO.

Therefore, when the worm wheel 56 rotates, the pin 54 rotates around the axis of the worm wheel 56, so that the arm 5
2 generates a force through the pin 50 and the inner peripheral surface of the recess 46 to move the slide button 42 in the right direction in FIG.

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 the bracket 60, and the other end is supported by the bracket 60 via the bracket 66.

A spur gear 68 is fixed to the central shaft of the worm gear 64 protruding from the bracket 66, and the bladder y I.6
It meshes with a small spur gear 7o that is pivotally supported by B. This small spur gear 7o is fixed to an output shaft 74 of a motor 72, which is fixed to the bracket 6o. Therefore, the motor 72 is configured such that its rotational force is decelerated by the combination of the small spur gear 70 and the spur gear 68 and the worm gear 84 and the wormwheel 56, and then transmitted as the rotational force of the wormwheel 56.

FIG. 4 shows an M control circuit 100 for the motor 72. In this control circuit 100, a motor 72 and a helimit switch 102 are connected via a vehicle power source 104. As shown in FIG. 3, this limit switch 102 corresponds to a cam 10B coaxially fixed to the worm wheel 56, and is turned off when the slide button 42 is in the state ff1l, as shown in FIG. 2.

Further, one end of a buckle switch 108 is connected to the motor 72 in this M control circuit 100, and this buckle switch l
The other end of o8 is connected to vehicle power supply 10 via door switch 110.
Connected to 4. Therefore, the balance switch 108,
Door switch 110 is connected in parallel with limit switch 102.

The buckle switch 108 is turned on when the tongue plate 30 is inserted into the buckle device, and the door switch 110 is turned on.
is set to turn on seven times when the vehicle door is opened.

Note that a cover 76 is attached to the buckle base 10 to cover the mechanism section.

The operation of this embodiment configured in this way will be explained.

When the passenger closes the door after getting on the vehicle and inserts the tongue plate 30 into the buckle base lO, the engaging pawl 36 engages with the engagement l]nI:+34 due to the biasing force of the leaf spring 3B, so that the tongue plate 30 is The webbing 32 can be securely locked to the buckle base 10 and can be worn by one occupant. In the event of a vehicle emergency, the occupant is restrained by this webbing 32. At this point, the door switch 110 and limit switch 102 are off, so even if the buckle switch 10B is on, the motor 72 remains stopped.

Further, when the passenger exits the vehicle, when the door is opened, the door switch 110 is turned on and the remoter 72 is driven.

The rotation of this motor 72 is decelerated and the worm wheel 56
transmitted to. Therefore, the slide piece 4
8 to the right in Figure 1.2. This slide piece 48 is inserted into the slide button 42 via the inner peripheral surface of the recess 46.
is moved along the leg plates 1g and 20, so the m slope 44
rotates the lock plate 28 clockwise in FIG.
extracted from. As a result, the tongue plate 30 can be pulled out from the buckle base 1o, and even if the tongue plate 30 is pulled out, the limit switch 102 turns off the power to the motor 72, and when the worm boiler 56 rotates once, the cam 106 is turned off. limit switch 1
02 is turned off, the power to the motor 72 is cut off, and the slide button 42 returns to the state shown in FIG. 1.2. In other words, if the door is not opened, the cam 106 will rotate once and stop.
During this time, the webbing state of the occupant is automatically released. This configuration allows the occupant to release the webbing simply by opening the door, which is particularly convenient for physically disabled passengers.

In this automatic release state, the slide piece 48
Since the compression coil spring 62 interposed between the slide button 42 and the slide button 42 does not exert any force that impedes the driving force of the motor 72, the driving force of the motor 72 is transmitted with probability as the moving force of the slide button 42.

Further, 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, the slide piece 48
is stopped, the slide button 42 moves to the right in FIG.
8 in a clockwise direction.

Next is the 5,611th! A second embodiment of the invention is shown in FIG.

In this embodiment, unlike the previous embodiment, a motor 72 is attached to the slide button 42. A worm gear 64 is connected to the output shaft of the motor 72, and a worm wheel 56 that meshes with the worm gear 64 is pivotally supported to the slide button 42 by a pin 58. An arm 52, one end of which is pivotally supported by a pin 54 on the worm wheel 56, has an endless end protruding from the slide button 42 and has a pin 50 erected thereon. This pin 50 is connected to the cover 76
It is designed to engage with a force-receiving plate 78 fixed to.

A compression coil spring 62 is interposed between the force receiving plate 78 and the slide button 42.

Therefore, in this embodiment, when the motor 72 rotates, its driving force is transmitted to the arm 52 via the worm gear 64 and the worm wheel 56, and the pin 50 attached to the tip of the arm 52 engages with the force receiving plate 78. and slide button 4
2 toward the force receiving plate 78, that is, toward the right in FIG. 4, the inclined surface 44 of the slide button 42 rotates the lock plate 28 clockwise via the release arm 40.

The limit switch 102 of this embodiment is attached to the cup 76 to detect the movement of the slide button 42, and when the slide button 42 is turned off in the state shown in FIG. It is arranged so that it is turned on when the plate 30 is released.

Further, in the case of manual operation, the slide button 42 may be moved against the biasing force of the compression coil spring 42.

The motor 72 connected to the slide button 42 is powered by a combination of contacts 80 and 82. That is, the contact 80 is fixed to the slide button 42 by a pin 84, and its tip is fixed to the inside of the cover 76 and contacts the contact 82 which is connected to the vehicle power supply. This contact 82 is longitudinal in the direction of movement of the slide button 42, so that the contacts 80, 82 slide when the slide button 42 is moved.

Further, the release arm 40 of this embodiment has four parts 46.
is closed with a cover 86.

In the above embodiment, the control circuit 100 head switch l! 0
is provided to control the motor 72, but instead of this, a switch may be used which is controlled by a timer or the like and turned on after a predetermined period of time after the large acceleration of the vehicle is applied in an emergency state.

[Effects of the Invention] As explained above, in the buckle device according to the present invention, the lock plate is moved between the tongue brakes 1 and 1 by the driving force of the motor, so the engagement of the tongue plate is automatically released despite the small size. structure can be obtained.

[Brief explanation of the drawing]

t51 is a sectional view showing the first embodiment of the buckle device according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG.
The figure is an exploded perspective view of the @l embodiment, Figure 4 is a motor control circuit diagram, Figure 5 is a sectional view corresponding to Figure 1 showing the second embodiment of the present invention, and Figure 6 is the second embodiment. It is an exploded perspective view showing a part of example. 10--Buckle base, 28--Lock plate. 30...Tongue plate, 32...Webbing, 34...Engagement opening 360/Engagement claw, 42@Slide button, 48.1 Slide piece, 521.Arm 56-...Worm foil, 621・Compression coil spring, 64--・Worm gear, 68 fist・・Spur gear 70--
-Small spur gear, 72nd motor, 100th motor, control circuit, 102-, Φ limit switch, 108, buckle switch, 110--door switch. Agent Patent Attorney Atsushi Nakajima

Claims (1)

[Claims] (1) A buckle device used in a seat belt device for occupant protection, which includes a buckle base attached to the vehicle body, a lock plate that engages with a tongue plate that is attached to and pushed into the buckle space, and a lock plate that engages with a tongue plate that is attached to and pushed into the buckle base. A buckle device characterized by having a motor that drives in a direction from the plate to the step.