JPS6228891Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a buckle in a seat belt for automobiles, etc., and an object of the present invention is to provide a buckle for a seat belt that has a simple structure and is easy to assemble.

The present invention will be explained below with reference to the drawings. FIGS. 1 and 2 show the state in which the tongue plate 2 is engaged with the buckle body 1. In the buckle body 1, reference numeral 3 denotes a frame, which is composed of a bottom plate 4 and side plates 5 and 6 provided facing each other on both sides of the bottom plate, and a support wire 7 is fixed to the rear end of the bottom plate 4. . Note that webbing can be sewn instead of wire. Further, substantially triangular support holes 8, 9 are bored in the front parts of the side plates 5, 6, and protrusions 10, 11 are squeezed out in the rear parts thereof.

Reference numeral 12 denotes an engaging member, whose front side edges protrude laterally and are swingably fitted into the support holes 8 and 9, and whose front central portion is squeezed downward;
An engaging claw 13 is formed. The rear part of the engaging claw 13 is bent upward, and a through hole 14 is bored in the bent part, and a lever 15 extends upward from the upper part of the bent part.
5 is curved and extends backward and downward. Reference numeral 16 denotes a leaf spring, the base of which is supported by the bottom plate 4, and the tip of which rests on the engaging pawl 13 through the through hole 14;
The engaging member 12 is always biased counterclockwise, that is, in the direction of engagement with the tongue plate 2.

Reference numeral 17 denotes an ejector, which has a substantially U-shape and is placed on the bottom plate 4 so as to be slidable back and forth, and is always biased forward by a spiral spring 18. When it is in the forward position, its front end enters under the engaging pawl 13, thereby preventing a so-called half latch.

19 is a slide button whose head 20
By pressing , the side plates 5 and 6 can be slid back and forth along the upper edges thereof, and are always biased toward the front position by the action of the helical spring 21. An operating rod 22 is provided at the lower rear of the slide button 19, and the operating rod 22 is fitted to the lower side of the lever 15.

Reference numeral 23 denotes a switch, which is electrically turned on and off by pressing the arm 24 with the rear edge of the ejector 17, and is connected to an alarm device or an interface that prompts the user to fasten a seatbelt as necessary. connected to a locking device.

25 is a cover of the buckle body 1. The tongue plate 2 has an engagement hole 26 formed at its leading end to engage with the engagement claw 13, and a slit 27 through which the webbing is inserted at its rear.

1 and 2 show the state in which the tongue plate 2 is engaged with the buckle body 1. In this state, the leading edge of the tongue plate 2 pushes the ejector 17 to move it backward against the elasticity of the helical spring 18, and the rear edge of the ejector 17 pushes the arm 24 to operate the switch 23. On the other hand, the engaging member 12 swings counterclockwise due to the elasticity of the leaf spring 16, and the engaging claw 13 falls into the engaging hole 26 of the tongue plate 2 and is engaged.
Furthermore, the slide button 19 is in the forward position due to the elasticity of the helical spring 21. In this state, the protruding portion 22' formed on the side of the operating rod 22 is positioned above the shoulder portion 15' of the bent portion of the engaging member 12, and the engaging member 12 is inadvertently moved. It will not swing in the release direction.

When the slide button 19 is slid backward against the elasticity of the spiral spring 21, the operating rod 2
2 moves rearward, pushes up the arm 15, and swings the engagement member 12 clockwise against the elasticity of the leaf spring 16, whereby the engagement claw 13 escapes from the engagement hole 26. Then, the ejector 17 moves forward due to the elasticity of the helical spring 18, and the tongue plate 2 is ejected forward. This state is shown in FIG. Slide button 19 here
When the pressing force is removed, the slide button 19 is returned to the front by the elasticity of the spiral spring 18, but
The engaging member 12 has an ejector 1 under the engaging claw 13.
7 is inserted, so it is held in the non-engaged position. The slide button 19 also has its protruding portion 22' abutting against the rear surface of the shoulder portion 15', and is not completely pushed back, but stops at a slightly pushed-in position, as shown by the chain line in FIG.

When the tongue plate is inserted again, the ejector 17 is retracted and enters the lower side of the protrusion 10. When the engagement hole 26 and the engagement claw 13 are aligned, the engagement member 12 swings and engages. The mating claw 13 engages with the engagement hole 26, the protrusion 22' rides on the shoulder 15', and the slide button 19 is pushed forward, returning to the state shown in FIGS. 1 and 2. .

In the present invention, the number of parts is small, the shapes of each part are simple and molding is easy, and assembly is very easy because all the parts need to be assembled on the frame 3 and the cover 25 is attached. Furthermore, since the ejector 17 is designed to fit under the engaging claw 13 when it is in the forward position, the tongue plate 2 is not completely ejected when the ejector 17 is not engaged, thereby preventing a so-called half latch from occurring.
Safe to use. Also, the shoulder portion 15' of the bent portion of the engaging member 12 and the protruding portion 2 of the slide button 19
2', it is possible to visually check whether the tongue plate 2 is properly engaged with the buckle body 1 by looking at the position of the slide button 19, and in the engaged state, the engagement member 12 is Rotation in the disengagement direction is prevented.

In the embodiment described above, the protrusion 10 serves as a guide when inserting the tongue plate 2, making the movement of the tongue plate 2 smooth and preventing the tongue plate 2 from inadvertently swinging in the engaged state. .

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the cover in cross section and removing the slide button, showing a state in which the tongue plate is engaged with the buckle body. FIG. 2 is a central vertical sectional view of FIG. 1. FIG. 3 is a central vertical sectional view of the disengaged state. 1... Batsukuru body, 2... Tongue plate,
3... Frame, 4... Bottom plate, 5, 6... Side plate,
7... Support wire (supporting member), 12... Engaging member, 13... Engaging claw, 14... Through hole, 15...
Arm, 15'... Shoulder, 16... Leaf spring, 17
... Ejector, 18, 21 ... Hanging spring (spring means), 19 ... Slide button, 22 ...
Operating rod, 22'...protrusion, 26...engaging hole.

Claims (1)

[Scope of utility model registration request] A frame 3 consisting of a bottom plate 4 and side plates 5 and 6 provided opposite to each other on both side edges of the bottom plate, and a support member 7 attached to the rear end of the bottom plate, and a frame 3 that is attached to the side plates on both sides of the front side of the frame 3. It is pivotably supported, and the center of the front part is squeezed out in the direction approaching the bottom plate to form an engaging claw 13, and the rear part of the engaging claw is bent upward and the lower part of the bent part is bent upward. An engaging member 12 having a through hole 14 and a lever 15 that extends upward from the upper part of the bent portion and further curves and extends rearward and downward; A leaf spring 16 that comes into contact with the back surface of the engagement claw and always biases the engagement member in the engagement direction.
an ejector 17 placed on the bottom plate so as to be slidable back and forth and always biased forward of the rear end of the engaging claw by a spring means 18; and an ejector 17 that is slidable back and forth with respect to the frame. It has an operating rod 22 which is always biased to a forward position by a spring means 21 provided on the lever and is fitted under the lever, and the engaging member is attached to the front part of the operating rod so as to be able to swing downward. When the engaging member is moving, it rides on the shoulder 15' of the bent portion of the engaging member, and when the engaging member is swinging upward, the protruding portion 22' abuts against the rear surface of the shoulder. A seat belt buckle comprising a buckle body 1 having a slide button 19 formed therein, and a tongue plate 2 having an engagement hole 26 that engages with the engagement claw.