JPS635531Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a safety belt buckle for automobiles and the like.

Among this type of buckles, slide-button buckles have been particularly preferred in recent years because of their good operability and excellent design. This slide button type buckle has a slide button that slides in the length direction of the buckle to operate an internal hook to release the engagement with the tongue. However, while this slide button moves in the length direction of the buckle,
Since the hook is generally provided to swing in the direction of the thickness of the buckle, it is necessary to change the direction of the movement of the slide button at right angles. Therefore, conventionally, the rear lower surface of the slide button is made into a tapered surface, and a portion of the hook is brought into contact with this tapered surface, so that when the slide button is slid, the tapered surface pushes the hook downward. However, this type of buckle has the disadvantage that the slide button becomes difficult to move because a portion of the tapered surface hook slides thereon. If the angle of inclination of the tapered surface was made smaller, the movement would be made easier, but this meant that the slide button needed to have a larger amount of movement, which meant that the entire buckle had to be larger.

In view of these circumstances, the present invention provides a rotating member between the slide button and the hook, thereby making the movement of the slide button lighter and the buckle smaller and more compact.

The present invention will be explained below with reference to the drawings. The drawing shows the buckle of the present invention, where 1 is a buckle body and 2 is a tongue that engages with the buckle body 1.

In the buckle body 1, reference numeral 3 denotes a frame, which is made up of a bottom plate 4 and side plates 5, 5 bent up on both sides of the bottom plate 4, and the upper ends of the side plates 5, 5 are bent inward to form a bent portion 6. , 6.
The front end of the bottom plate 4 is folded upward to form a hook receiving part 7.
The rear part is extended and has a long hole 8 for attaching webbing.

Reference numeral 9 denotes a hook, the front end of which is swingably fitted into the hook receiving part 7 of the frame 3, arms 10, 10 extending rearward are provided on both sides, and the central part is squeezed upward. An engaging claw portion 11 is formed by the engaging claw portion 11, and an engaging edge 1 is formed on the rear end edge of the engaging claw portion 11.
2 is formed.

Numeral 13 is a leaf spring interposed between the hook 9 and the bottom plate 4, which always biases the hook 9 upward.

14 is a cover with an opening 1 at the front upper part thereof.
5. 16 is a partition wall of the cover 14, and a box-shaped cavity is formed between the partition wall 16 and the outer shell 17 of the cover. Also, a through hole 18 is bored in the rear part of this partition wall 16, and box-shaped parts 19, 19 that open downward are formed in the partition wall 16 on both sides of this through hole 18.
is formed. The cover 14 is assembled such that the partition wall 16 is placed on the bent portion 6 of the frame 3. Reference numeral 20 denotes a slide button that is slidably fitted into the cavity of the cover 14, and its head 21 is exposed through the opening 15 of the cover so that it can be operated from the outside. 22, it is always biased forward. At the bottom of the rear of the slide button 20,
A protrusion 30 that engages with the partition wall 16 is provided to prevent the slide button 20 from protruding too far forward. Further, tapered surfaces 23 are formed on the lower surface of the rear end of both sides of the slide button 20.

24 is a rotating member, and both ends of its rotating shaft 25 are rotatably fitted into the box-shaped portion 19. A contact piece 26 is bored in the upper part of the rotation shaft 25, and an operation piece 27 is protruded from the rear. 27 are brought into contact with the upper surface of the arm 10 of the hook 9, respectively.

An engagement hole 28 is bored in the tongue 2, and one edge of the engagement hole 28 forms an engagement edge 29.

In the buckle body 1, the slide button 20 is normally biased forward by a spring 22, and the hook 9 is also biased upward by the elasticity of a leaf spring 13. The rotating member 24 is pushed up by the hook 9 and rotated clockwise, and is in the state shown in FIG. Then, when the tongue 2 is inserted from the front end of the buckle body 1 onto the hook support part 7, the tip edge of the tongue enters while pushing down the hook 9, and when the engagement hole 28 comes to the position of the engagement claw 11, the leaf spring 13 The elasticity of the hook 9 pushes the hook 9 up again, and the tongue 2 is engaged with the buckle body 1 as shown by the chain line in FIG.

Next, when the slide button 20 is slid backward against the elasticity of the spring 22, the tapered surface 23
pushes the abutting piece 26 of the rotating member 24 backward, the rotating member 24 rotates counterclockwise around the rotating shaft 25, and the operating piece 27 pushes the arm 10 of the hook 9 downward, causing the hook to close. 9 is pushed down against the elasticity of the leaf spring 13, and the engagement claw 11 escapes from the engagement hole 28 of the tongue 2, and the tongue 2 and the buckle body 1
The engagement with the tongue 2 is released, and the tongue 2 is ejected by the elasticity of the rear upper portion 31 of the leaf spring 13.

In the buckle of the present invention, since the movement of the slide button 20 is transmitted to the hook 9 via the rotating member 24, the efficiency of changing the direction of force is high, and it can be operated with a small force. Furthermore, since the slide button 20 is provided with the tapered surface 23, the force required for operation is even smaller, allowing for extremely light operation, and even if the inclination angle of the tapered surface 23 is small, the movement distance of the slide button 20 is almost large. Therefore, the length of the buckle body 1 will not become larger than necessary.

Also, in the embodiment of the above-described drawings, the cover 14
Since the partition wall 16 is provided in the partition wall 16 and the slide button 20 is fitted into the space between the partition wall 16 and the outer shell 17, the cover part and the frame part are assembled separately, and then the cover part and the frame part are assembled together. can be combined, making assembly work extremely easy. Conventionally, when assembling this type of buckle, hooks and other parts were placed on the frame, and the cover was attached while holding them in place. The hook 9 and the leaf spring 13 are assembled to the frame 3, and the slide button 20 and the spring 22 are assembled to the cover 14, and then the cover 1
The rotary member 24 can be attached to the rotating member 4 and assembled to the frame 3, and there is no need for the troublesome work of holding separate parts in a predetermined position and holding them down with a cover as in the past, which is extremely simple. This makes it possible to assemble it easily.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of the frame portion, Fig. 2 is a central vertical sectional view showing the normal state, and Fig. 3 is a state in which the slide button is slid. 2 shows a central vertical cross-sectional view of the 3...Frame, 4...Bottom plate, 5...Side plate, 7
...Hook receiving portion, 9...Hook, 10...Arm, 11...Engaging claw portion, 12...Engaging edge, 13...
...Spring means (plate spring), 14...Cover, 16...
...Partition wall, 17...Outer shell, 18...Through hole, 19...
Box-shaped portion, 20... Slide button, 23... Tapered surface, 24... Rotating member, 25... Rotating shaft, 2
6...Abutment piece, 27...Operation piece.

Claims (1)

[Claims for Utility Model Registration] 1. A frame 3 consisting of a bottom plate 4 and side plates 5, 5 provided on both sides of the bottom plate, with the front edge of the bottom plate folded upward to form a hook receiving portion 7;
A hook having arms 10, 10 extending rearward on both sides, an engaging claw part 11 forming an engaging edge 12 at the rear edge in the center part, and a front end pivotally fitted into the hook receiving part. 9, a spring means 13 for constantly biasing the hook upward; and a spring means 13 provided above the side plate so as to be slidable back and forth and always biased forward by a spring 22, and having a tapered surface 23 on the lower surface of the rear end. The formed slide button 20, a contact piece 26 which is rotatably supported by a rotation shaft 25 on the upper part of the side plate and comes into contact with the tapered surface of the slide button, and an operation piece 27 which comes into contact with the upper surface of the arm of the hook.
and a rotating member 24 having a rotating member 24, and by sliding the slide button backward, the tapered surface pushes the contact piece and rotates the rotating member,
A buckle for a safety belt, characterized in that an operating piece pushes down the hook to release the engagement between the hook and the tongue. 2. A partition wall 16 is provided on the cover 14 of the buckle, and the partition wall is assembled so as to be placed on the side plates 5, 5 of the frame, and a box-shaped space is formed between the outer shell 17 of the cover and the partition wall. The slide button 20 is slidably fitted into the space, a through hole 18 is formed at the rear of the partition wall, and box-shaped portions 19 are formed on both sides of the through hole to fit the rotation shaft. Utility model registration claim 1, characterized in that the rotating member rotates through the through hole.
Safety belt buckle as described in section.