JPS5925407Y2 - buckle device - Google Patents

Description

[Detailed description of the invention] This invention relates to a buckle device, and in particular, a buckle device for a three-point seat belt system that protects an occupant in a vehicle emergency using an occupant restraint webbing in which a shoulder belt and a waist belt are continuously connected. Regarding.

Generally, a three-point seatbelt system is used to restrain the occupant using shoulder belts and waist belts to protect the occupant during vehicle emergencies.

Among these three-point seat belt systems, in those with loop-shaped webbing in which the shoulder belt and waist belt are continuously connected, the tensile force acting on the shoulder belt and waist belt is equalized, especially The occupants are protected safely and appropriately.

In a three-point seat belt system having a webbing in which the eyebrow belt and the waist bell 1~ are continuously connected in this way, the tongue plate 1~ is inserted and provided in the middle part of the webbing, and this tongue plate is fixed to the vehicle. The passenger restraint space is formed by engaging and disengaging the buckle device.

However, in a three-point seat belt system having such a tongue plate, it is difficult to achieve smooth handling due to the sliding resistance between the tongue plate 1 and the webbing, and it is difficult to remove the tongue plate from the buckle device. In this case, there is a possibility that the tongue play 1~ may collide with the passenger or the door inside the vehicle, causing damage to them, and the webbing winding force must be increased to correspond to the weight of the tongue plate. There is a problem.

Therefore, in the conventional three-point seat belt system,
A so-called tangless buckle device has been proposed in which the intermediate portion of the webbing is directly attached to the buckle device without using a tangzole.

However, although such conventional tongueless buckle devices have a complicated structure, there is a risk that the buckle may be released due to impact such as a collision that is applied to the vehicle, and the attachment and detachment operations are complicated. However, it has the disadvantage that it is difficult for a passenger to wear it with one hand.

This invention was made to eliminate the above-mentioned conventional drawbacks, and aims to provide a buckle device that has a simple structure, achieves a highly reliable restraint state, and has good operability. .

The buckle device according to this invention includes a body that is fixed to the vehicle body, and a lock that is rotatably supported on the body and is biased toward the stored position in the body, and has a slot portion through which the webbing can be inserted and held. The arm is rotatably supported in the frontage of the slot portion of the lock arm, is biased to open the slot portion at the release position of the lock arm, and is guided by the guide portion of the body at the storage position of the lock arm to open the slot portion. a locking lever rotatably supported by the body, biased to lock with the lock arm at the lock arm's retracted position, and released from the lock arm by operating means; The lock arm is rotatably supported and has a push lever for pushing the lock arm from the storage position to the release position by operating means.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIGS. 1 and 2 are explanatory diagrams showing a buckle device according to this invention.

The body 10 consists of two opposing plate parts 11 and 12.
are assembled in a sandwich manner by the pin 13 and the guide portion 14 to form an internal space, and each member described later is built into the internal space.

A lock arm 20 is rotatably supported on the body 10 via a pin 21.

The lock arm 20 is provided with a slot portion 22 through which the webbing 1 formed in a substantially U-shape can be inserted and held. A spring 23 is interposed between the body 10 and the upper arm 20A on the opening side of the slot 22 to form an arcuate surface on which a gate 30 (described later) can be secured. On the opening side of the slot portion 22, the lower arm portion 20B is provided with a claw-shaped locking portion 25 that can be engaged with a locking lever 40, which will be described later. It has been extended.

A gate 30 is rotatably supported on the lower arm portion 20B of the lock arm 20 at the opening of the slot portion 22 via a pin 31.

An arcuate locking step portion 32 that can lock with the locking pin 24 is formed at the tip of the locking pin 30 .

A twisted coil spring 33 is attached around the pin 31, and one end of the spring 33 is attached to the lock arm 20.
(the other end is locked to the gate 30, and the other end is locked to the gate 30)
30 is given a biasing force in the direction of opening the slot portion 22.

Furthermore, in the storage position where the lock arm 20 stores its lower arm portion 20B inside the body 10, the gate 30 is guided by the guide portion 14 of the body 10,
It is rotated in a direction opposing the biasing force of the spring 33,
As shown in FIG. 1, the engagement step portion 32 is adapted to engage the engagement pin 24.

Furthermore, the gate 30 is configured such that an arcuate portion 34 formed around the pin 31 can smoothly rotate relative to the guide portion 14 when the lock arm 20 is in the stored state.

A locking lever 40 is rotatably supported on the guide portion 14 side of the body 10 via a pin 41.

The locking lever 40 has an abbreviated shape, and is provided with a locking pin 42 at one end, a pin 43 at the other end, and a torsion coil-shaped spring 44 interposed between it and the body 10. the locking pin 4 at the storage position of the lock arm 20.
2 is biased in the direction of locking the lock arm 20 to the locking portion 25 of the lock arm 20.

A push lever 50 is rotatably supported via a pin 51 on the side where a pin 21 for pivotally supporting the lock arm 20 of the body 10 is attached.

The push lever 50 has an abbreviated shape, and is provided with a push pin 52 at one end and a pin 53 at the other end.

Further, the push lever 50 is provided with a torsion coil spring 54 interposed between it and the body 10, and is normally disconnected from the lock arm 20, and a stopper pin 55 provided on the body 10. It is now under pressure.

A button 60 as an operating means is attached to the plate portion 11 of the body 10 via a guide means (not shown).
It is possible to move vertically downward from the position shown in FIG. 1 against the biasing force of a spring 61 interposed between.

The button 60 has a shallow first groove portion 62 and a deep second groove portion 62.
A groove portion 63 is provided.

The bottom of the first groove 62 is in constant contact with the pin 43 of the locking lever 40, and the bottom of the second groove 63 is spaced apart from the pin 53 of the push lever 50 when the button 60 is in its normal position.

The button 60 is operated by releasing the locking state between the locking lever 40 and the lock arm 20 via the pin 43 before pressing the button 60, and then rotating the push lever 50 via the pin 53 to release the push lever 50. 52, the lock arm 20 is rotated about the pin 21 and pushed up from the storage position in the body 10 to the release position.

A stopper pin 15 provided on the body 10 stops the lock arm 20 at the release position.

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

In the normal state, each member of this buckle device is maintained in the position shown in FIG.

That is, the button 60 is held at the uppermost position by the biasing force of the spring 61, and the lock arm 20 is housed in the case 10 by the biasing force of the spring 23.

Further, the gate 30 closes the slot portion 22 by the urging force of the guide portion 14 of the body 10 and the spring 33, and the locking lever 40 is locked to the lock arm 20 by the urging force of the spring 44.

Further, the push lever 50 is cut off from contact with the lock arm 20 by the biasing force of the spring 54.

To attach the webbing 1 from this state, the webbing 1 is inserted into the slot portion 22 by pushing down the gate 30 as shown in FIG. 3.

When the insertion of the webbing 1 is completed, the gate 30 closes the slot portion again by the biasing force of the spring 33 and holds the webbing 1.

In this state, the lock arm 20 is securely fixed to the body 10 via the pin 21 and the locking lever 40, and is supported by the gate 30 with both the upper arm portion 2OA and the lower arm portion 20B. The webbing 1 can be held safely and firmly even in an emergency.

Furthermore, when the webbing 1 is detached, if the button 60 is pressed down, the locking state between the locking lever 40 and the lock arm 20 is released in the previous stage, and then the push lever 5
0, the lock arm 20 is pushed up from the stored position in the body 10 to the released position as shown in FIG.

In this release position, the gear 30 is rotated by the biasing force of the spring 33 to open the slot portion 22, and the webbing 1 is removed to the outside.

If the button 60 is released after the webbing 1 is detached, the buckle device is returned to the normal state shown in FIG. 1 by the springs 23, 33, 44, 54, 61 and the guide portion 14.

According to the above embodiment, the webbing can be attached and detached by a single action by the occupant, and one-handed operation is possible.

Further, since the lock arm and the like are always in the stored state and the protrusion does not protrude upward, it is safe.

As described above, the buckle device according to this invention includes a body that is fixed to the vehicle body and a slot portion through which the webbing can be inserted and held, and is biased in the direction of the storage position in the body and can be rotated by the body. A lock arm is rotatably supported in the slot opening of the lock arm, is biased to open the slot in the unlocked position of the lock arm, and is guided to the guide part of the bottle in the retracted position of the lock arm. a locking lever that is rotatably supported on the body, is biased to lock with the lock arm at the storage position of the lock arm, and is released from the lock arm by an operating means. and a push lever that is rotatably supported on the body and that pushes the lock arm from the storage position to the release position using the operating means, so a highly reliable locking state can be obtained with a simple structure. Moreover, it has the effect of improving operability.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view showing an embodiment of the buckle device according to the invention, Fig. 2 is a partially sectional side view of the buckle device, and Figs. 3 and 4 are respectively in the same operating state. FIG. 10...Body, 14...Guide part,
20...Lock arm, 22...Slot portion, 23.33.44.54.61...Spring, 30...Gate, 40... ...
Lock lever 50... Push lever, 60...
··button.

Claims (1)

[Scope of utility model registration request] A body fixed to the vehicle body, a lock arm provided with a slot portion through which webbing can be inserted and held and rotatably supported by the body while being biased in the direction of the storage position in the body, and an opening in the slot portion of the lock arm. A gate rotatably supported on the body and biased to open the slot portion when the lock arm is in the released position, and guided by the guide portion of the body to close the slot portion when the lock arm is in the retracted position; A locking lever is supported and biased to lock with the lock arm at the storage position of the lock arm, and is released from the lock arm by the operating means; a push lever for pushing up the buckle from the storage position to the release position;