JPS6030116Y2 - Buckle device - Google Patents

Description

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

Generally, a three-point seatbelt system is used to restrain the occupant using a shoulder belt and a waist belt to protect the occupant in a vehicle emergency.

Among these three-point seat belt systems, those with loop-shaped webbing in which the shoulder belt and waist belt are continuously connected are particularly safe because the tensile force acting on the shoulder belt and waist belt is uniform. This ensures that the occupants are protected.

In such a three-point seat belt system having webbing in which the shoulder belt and waist belt are continuously connected,
A tank plate is inserted through the middle part of the webbing,
This tongue plate is engaged with and detached from a buckle device fixed to the vehicle to form an occupant restraint space.

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 and the webbing, and when the tongue plate is removed from the buckle device, the tongue plate There is a problem in that the webbing winding force must be increased in proportion to the weight of the tongue plate.

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

However, such a conventional tongueless buckle device has a drawback that it has a complicated structure, and the attachment/detachment operation is complicated, making it difficult to attach the buckle while the vehicle is running.

This invention was made in order to eliminate the above-mentioned conventional drawbacks, and it is possible to reliably hold the middle part of the webbing.
The object of the present invention is to provide a buckle device with excellent operability for mounting and releasing.

The buckle device according to this invention includes a bracket that is fixed to a vehicle body and has a locking portion, and a slot portion that is open on one side through which webbing can be inserted, and the open side of the slot portion is connected to the locking portion of the bracket. a U-shaped arm located on the side and rotatably supported by the bracket; and a posture maintenance device disposed between the bracket and the U-shaped arm to maintain the posture of the U-shaped arm with respect to the bracket at a normal position. means, rotatably provided near the open end of the U-shaped arm;
When the U-shaped arm is held in the normal position by the posture holding means, the receiver is stopped by the locking part of the bracket,
A mooring means consisting of a mooring member that closes the slot portion and a spring that urges the mooring member in the opening direction of the slot portion, an actuation member that releases the engagement between the posture holding means and the U-shaped arm, and the actuation member. and an operating section for rotating the U-shaped arm in a direction to release the engagement between the anchoring member and the engagement section.

According to the above configuration, the U-shaped arm is held in the normal position by the posture holding means, and the open end of the U-shaped arm is held by the mooring member that is held in the locking portion of the bracket against the biasing force of the spring. Closed.

In this state, when the webbing is worn, the mooring member is pushed down and inserted into the slot by the side end surface of the webbing.

Thereafter, the anchoring member is rotated back to a position where the opening of the U-shaped arm is closed by the action of the spring, and is supported by the locking portion of the bracket, thereby preventing the webbing from coming off to the outside.

On the other hand, when the webbing is detached, the engagement between the posture holding means and the U-shaped arm is released by the actuating member of the disengagement means, and the mooring member rotated by the U-shaped arm is released from the support of the locking part, and the mooring member is released. The spring action rotates the slot in the opposite direction, opening the slot and allowing the webbing to be removed.

Examples of this invention will be described below with reference to the drawings.

1 to 3 are explanatory diagrams showing one embodiment of the buckle device according to this invention.

An intermediate portion of the webbing 1 between the shoulder belt 2 and the waist belt 3 is inserted through and held by this buckle device.

This buckle device includes a bracket 10 fixed to a vehicle body, and a slot portion 27 that is rotatably supported by the bracket 10 and is open in the vehicle traveling direction, through which the webbing 1 can be inserted. An arm 20, a posture holding means 30 disposed between the bracket 10 and the 0-shaped arm 20 so that the 0-shaped arm 20 is normally held in a substantially horizontal position, and a slot portion 2 of the 0-shaped arm 20.
The mooring means 40 provided near the opening of the figure-0 arm 20 so as to close the figure-0 arm 7, and the posture holding means 30 are moved to rotate the figure-0 arm 20, and the mooring means 40 is further interlocked to close the figure-0 arm. and a detachment means 50 for releasing the slot portion 27 of 20.

The bracket 10 is provided with a support portion 11, and the support portion 11 is provided with a hole 12.

Further, a horizontal engagement surface 13 extends from the bracket 10, and a locking portion 14 is vertically provided at the end of this engagement surface 13.

The 0-shaped arm 20 also includes an upper arm portion 21, a lower arm portion 22 substantially parallel to the upper arm portion 21, and a curved arm portion 23 connecting the upper arm portion 21 and the lower arm portion 22. These upper arm portion 21 and lower arm portion 2
The space surrounded by the webbing 2 and the curved arm portion 23 is a slot portion 27 through which the webbing 1 can be inserted, as described above.

Further, the bracket 10 is located approximately at the center of the lower arm portion 22.
A recessed portion 24 is formed as a space in which the supporting portion 11 of the bracket 10 is accommodated and is relatively rotatable, and holes 25 are provided in both side walls of the recessed portion 24. A pin 26 is inserted through the hole 12 to pivotally connect the bracket 10 and the O-shaped arm 20.

The posture holding means 30 has a pair of levers 31, which sandwich the bracket 10 and have one end slidably joined to the bracket 10 by a pin 32, and the other end is provided with a pin 33 to connect the bracket 10 to the bracket 10. The pin 33 can be engaged with and detached from an engagement recess 34 provided on the lower surface of the 0-shaped arm 20.

Furthermore, a pin 36 is fixed approximately at the center of this lever 31, and the other end of a tension spring 35 supported by the bracket 10 is locked to this pin 36.

In other words, this attitude holding means 30 applies the biasing force of the tension spring 35 to the zero-shaped arm 20 through the engagement pin 33 and the engagement recess 34 to apply a counterclockwise rotational force to the zero-shaped arm 20.
By pressing the lower surface of the left lower arm portion 22 of the 0-shaped arm 20 against the retaining surface 13 of the bracket 10, the 0-shaped arm 20 is maintained in a substantially horizontal position in the normal state.

Further, the mooring means 40 has a mooring member 41, which is inserted into an insertion portion 42 provided near the opening of the lower arm portion 22 and is rotatable to the lower arm portion 22 via a pin 43. is supported by.

In addition, a leaf spring 45 is fixed to the lower arm part 22 by a small screw 46 in the insertion part 42, and the free end of this leaf spring 45 comes into contact with the side surface of the mooring member 41 and rotates counterclockwise to the mooring member 41. It provides rotational force.

The distal end of the mooring member 41 is caused by the action of the leaf spring 45 so that the outer end of the mooring member 41 is connected to the locking portion 1 of the bracket 10.
4 and is rotated to a position where rotation is restricted, and the distal end thereof is inserted into the mounting portion 44 of the upper arm portion 21 to close the slot portion 27.

Furthermore, the detachment means 50 has a push button 51 as an operating section and a rod 52 as an operating member that is vertically installed on the push button 51. 53, and its tip portion can be projected into the engagement recess 34 to which the engagement pin 33 of the posture holding means 30 is anchored.

Further, a compression spring 54 is attached to the upper end of this rod 52 between the push button 51 and the upper arm portion 21.
The tip portion of the engagement pin 33 is prevented from pressing down on the engagement pin 33 under normal conditions.

That is, this detachment means 50 disengages the engagement pin 33 of the posture holding means 30 from the engagement recess 34 by pushing down the push button 51 facing the compression spring 54, and by further pushing down the 0-shaped arm 20. The slot portion 27 is opened by rotating the slot portion 27 in the direction shown in FIG.

That is, due to the rotation of this 0-shaped arm 20, the mooring member 4
1 is detached from the locking part 14 of the bracket 10 and rotated counterclockwise by the biasing force of the leaf spring 45, so that its tip part is separated from the mounting part 44 of the upper arm part 21 and opened in the slot part 27. It comes to form a section.

That is, in order to wear the webbing in this embodiment, the occupant pushes the webbing side end face into the mooring member 41 and rotates the mooring member 41 clockwise to push it down and insert it into the slot portion 27.

After the webbing is inserted, the mooring member 41 is rotated counterclockwise by the action of the leaf spring 45 to return to its current position and maintain the slot portion 27 in a closed state.

In the event of a vehicle emergency when this webbing is worn, the tensile force acting on the webbing will act on the upper arm portion 21 of the 0-shaped arm 20, and the mooring member 41 that closes this slot portion 27 will securely attach to the locking portion 14. Since it is locked, there is no risk of the webbing being detached to the outside.

Further, when the webbing is to be detached, the occupant presses the push button 51 one step to release the lever 31 of the posture holding means 30 from the engagement state with the figure 0 arm 20, as described above, and then By rotating the figure 0 arm 20 clockwise, the mooring member 41 is rotated clockwise under the biasing force of the leaf spring 45 to force the slot portion 27 into an open state. 0-shaped arm 2 so that the part is located vertically upward.
0 to remove the webbing to the outside.

After this webbing is detached, the posture maintaining means 30
The engagement pin 33 of the curved arm portion 23 of the 0-shaped arm 20
is pushed up by the biasing force of the tension spring 35 to rotate the 0-shaped arm 20 counterclockwise.

This 0-shaped arm 20 is automatically rotated until the engagement pin 33 engages with the engagement recess, and furthermore, at that time, the mooring member 4
1 is brought into contact with the locking portion 14 of the bracket 10 and rotated clockwise to maintain the slot portion 27 in a closed state.

According to the above embodiment, the occupant can easily put on or take off the webbing with one hand, and the buckle device is automatically returned to its original position after the webbing is taken off.

Also, in the normal position of this buckle device, the 0-shaped arm 2
0 is prevented from rotating clockwise by the lever 31, and is surely prevented from rotating counterclockwise by the engaging surface 13, and the anchoring member 41 is prevented from rotating clockwise due to the presence of the locking portion 44. Therefore, the webbing can be held stably and reliably in a vehicle emergency.

Next, FIG. 4 is an explanatory view showing another embodiment of the buckle device according to this invention, and in this embodiment, the bracket 1
Since the 0.0-figure arm 20 and the detachment means 50 are constructed in exactly the same manner as in the previous embodiment, the same reference numerals are given to the same members and the explanation thereof will be omitted.

Now, in this embodiment, the posture holding means 30 has a rod-shaped support 31A, and one end of this support par 31A is inserted into the bracket 10, and a biasing force in the counterclockwise direction is always applied by the action of a torsion spring 35A. The other end engages with an engagement recess 34 provided in the 0-shaped arm 20 to support the 0-shaped arm 20 in a substantially horizontal position.

Furthermore, the mooring member 40 in this embodiment has a mooring member 41 similar to that of the previous embodiment, and this mooring member 41 is rotatably supported via the insertion portion 42 of the 0-shaped arm 20 and a pin 43. The distal end portion is inserted into the mounting portion 44 in the normal state.

Further, this mooring member 41 is connected to a torsion spring 45A fixed to the 0-shaped arm 20, and is constantly given a counterclockwise rotational force as in the previous embodiment.

That is, in this embodiment, the tension spring 35 and leaf spring 45 in the previous embodiment are each replaced by the torsion spring 3.
5A and 45A, therefore, the biasing mechanism of the posture holding means 30 and the mooring means 40 can be simplified.

Next, FIG. 5 shows the mooring means 4 of the buckle device according to this invention.
FIG.

That is, in this embodiment, the tip of the mooring member 41 is a T-shaped locking portion 41A, and the tip of the mooring member 41 is inserted into the mounting portion provided on the upper arm portion 21 of the 0-shaped arm 20. 44A is a T-shaped groove.

That is, according to such an embodiment, even if the upper arm portion 21 of the U-shaped arm is bent and deformed due to a tensile force acting on the webbing in a vehicle emergency, the tips of each of the upper arm portion 21 and the lower arm portion 22 are are firmly connected by the mooring member 41, the open end side of the upper arm portion 21 is not excessively deformed, and therefore the slot portion 27 is always maintained in a strongly closed state, and the webbing can be held securely.

In each of the above embodiments, the opening 28 of the 0-shaped arm 20
Although the opening 28 is opened in the direction of vehicle travel to facilitate the installation of the webbing by the occupant, the opening 28 may also be located in the opposite direction of the vehicle travel. The webbing that slides in the traveling direction is held by the curved arm portion 23, which is favorable from the viewpoint of safety.

As mentioned above, according to the present invention, since the webbing is supported by a U-shaped arm, it can exhibit sufficient strength against the tensile force that acts on the webbing in the event of a vehicle emergency, and can maintain the restraint state of the occupant. .

Further, since the closing operation of the slot portion is performed in conjunction with the movement of the U-shaped arm to the normal position of the mooring means, the slot portion is always closed when the webbing is attached, and the webbing does not come off to the outside.

Furthermore, since the occupant can release the engagement between the U-shaped arm and the posture holding means and perform the ρ rotation operation with one hand after the release, the complexity of using the webbing is eliminated and good operability is achieved. .

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the buckle device according to this invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a perspective view showing the same operating state, and Fig. 4 is an embodiment of the buckle device. Side view shown, fifth
The figure is a sectional view showing the mooring means in the embodiment of the function. 10... Bracket, 20... U-shaped arm, 21... Upper arm & 22... Lower arm section, 23... Curved arm Part, 27...
... Slot portion, 30 ... Posture holding means,
40 mooring means, 41... mooring member, 45...
...Plate spring, 50...Removal means.

Claims (1)

[Scope of utility model registration request] A bracket is fixed to the vehicle body and has a locking portion, and a slot portion through which the webbing can be inserted has one side open.
a U-shaped arm rotatably supported by the bracket with the open side of the slot portion located on the locking portion side of the bracket; and a U-shaped arm disposed between the bracket and the U-shaped arm;
a posture holding means for maintaining the posture of the U-shaped arm with respect to the bracket at a normal position; and a posture holding means rotatably provided near the open end of the U-shaped arm, the U-shaped arm being held at the normal position by the posture holding means. When the bracket is in the position, the receiver is fixed to the locking part of the bracket, and the mooring means includes a mooring member that closes the slot part and a spring that biases the mooring member in the direction in which the slot part is opened; An actuating member that releases the engagement with the arm, and a U in the direction of operating the actuating member and releasing the locking between the mooring member and the locking part.
A buckle device comprising: a release means consisting of an operation section that rotates the arm.