JPS6245960Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a buckle in a passive seat belt device, and is particularly suitable for attaching the end of a shoulder belt to the upper end of a door.

FIG. 1 shows an example of the use of the buckle of the present invention, where 1 is the buckle of the present invention and 2 is webbing. A buckle 1 is attached to the upper part of the sash 4 of the door 3, and one end of the webbing 2 is connected to the buckle 1. Webbing 2
The other end is wound around a retractor 6 attached to the inside of the seat 5. When the door is open, passengers can freely enter and exit the cabin as shown in Figure 1, and when the door is closed, the webbing is stretched from the upper right to the lower left of the seat, restraining the passenger. . Further, by providing a webbing that extends from the middle of the webbing to the bottom of the door, a three-point seat belt can be configured when worn.

These passive seat belt systems can normally be attached and detached automatically by opening and closing the door, but in an emergency, it is necessary to be able to release the belt without opening the door. Therefore, in the present invention, a buckle is provided at the door attachment part of the webbing so that it can be released manually.

2 to 6 show the buckle body 7 of the buckle of the present invention, and FIG. 7 shows the tongue plate 8. Buckle body 7
Reference numeral 9 denotes a mounting fitting having a substantially U-shaped bent portion 10 at one end thereof, and bolt holes 13, 14 formed in opposing surfaces 11, 12 thereof. Further, side plates 15 and 16 are bent at the upper and lower edges of the other end of the mounting bracket. Reference numeral 17 denotes a frame, which is formed into a flat, substantially annular shape, and a gap is provided between the side plates 18 and 19 to allow insertion of the tongue plate 8. Further, at the rear of the frame 17, there are flanges 20 that face each other vertically.
21 is provided in a protruding manner, and the flanges 20, 21 and the side plates 15, 16 are rotatably supported by pins 22. Further, long holes 23, 24 are formed in the side plates 18, 19 from their lower ends to approximately the center thereof, and furthermore, a notch 25 is provided in the rear end edge of each side plate 18, 19.

Reference numeral 26 is an operating member, and legs 28 and 29 are formed on both edges of the operating portion 27.
is attached to the outside of the side plates 18 and 19 of the frame 17, and the tips of the lock pins 30 passing through the long holes 23 and 24 are fixed to the tips of the legs 28 and 2, and the operating member 26 is attached to the frame 17. It is designed to be able to slide up and down relative to the ground, and is always biased upward by a helical spring 31. Further, a notch 32 is formed in the rear end edge of one leg 29.

33 is an ejector, and the side plate 18,
The projections 34 and 35 are slidably fitted between the legs 19 and the notches 25, and one of the projections 35 has a projection extending in a direction opposite to the one leg 29. 36 is formed, and the other protrusion 34 is further provided with a small protrusion 37 projecting therefrom. The ejector 33 is always biased forward by the helical spring 38.

39 is a switch. Reference numeral 40 denotes a substrate, and its front end is provided with wing pieces 41, 42 extending vertically, electrodes 43, 44 are attached from the wing pieces 41, 42 to the substrate 40, and the electrodes 43, 4
4 is connected to a cord 45. 46 is a sliding plate, and rails 47, 4 on both edges of the board 40
It is designed to be able to slide back and forth along the
A current carrying body 49 connecting the electrodes 43 and 44 is attached to the back surface thereof, and conduction is established between the electrodes 43 and 44 when the sliding plate 46 is biased forward, and conduction is broken when the sliding plate 46 is biased backward. It's summery. The board 40 is integrally attached to the frame 17, and the small protrusion 37 is fitted into a small hole at the front end of the sliding plate 46 through the hole in the board 40, so that the ejector 33 and the sliding plate 46 are integrally attached. It's starting to move.

The tongue plate 8 has a straight upper edge and an engagement notch 8' formed in the lower edge.

Each of FIGS. 2 to 5 shows a state in which the tongue plate 8 is engaged with the buckle body 7.
In this state, the operating member 26 is biased upward by the elasticity of the helical spring 31, and the lock pin 30 is inserted into the engagement notch 49 of the tongue plate 8.
The buckle body 7 and the tongue plate 8 are firmly engaged. Further, the ejector 33 is pushed by the tip of the tongue plate 8 and biased rearward against the elasticity of the helical spring 38, and the switch 39 is in a non-conducting state as shown in FIG.

When the operating member 26 is pushed downward, the lock pin 30 descends along the elongated holes 23 and 24 and escapes from the lower edge of the engagement notch 8'. As a result, the ejector 33 is moved forward by the elasticity of the helical spring 38, and the tongue plate 8 is ejected from the buckle body 7. Furthermore, at this time, the operating member 2
6 is pushed down, so ejector 33
The protrusion 36 in the notch 32 of the operating member 26
to be inserted into. Also, in this state, switch 39
Since the sliding plate 46 is located at the front, it is in a conductive state, and an alarm such as a buzzer can be issued or an interlock mechanism can be used to stop the engine, etc., as necessary.
Even if the operation of the operating member 26 is stopped at this point, the operating member 26 remains in the depressed state because the protrusion 36 is fitted into the notch 32. This state is shown in FIG.

When the tongue plate 8 is inserted again between the side plates 18 and 19, the ejector 33 is moved back,
The protrusion 36 escapes from the notch 32 and the operating member 2
6 is moved upward by the elasticity of the helical spring 31, and the lock pin 30 engages with the engagement notch 8' and returns to its original state.

Therefore, in the present invention, the buckle main body 7 and the tongue plate 8 are firmly connected at all times.
Although the occupant is restrained by the webbing 2, in an emergency, the buckle can be easily released and the occupant can escape from the vehicle. Furthermore, since the buckle body 7 is rotatable with respect to the door 3, the buckle 1 can be oriented in the direction in which the webbing 2 extends when worn, and no strain is applied locally to the webbing. Moreover, in the buckle of the present invention, since the operating member 26 is held in a depressed state when the tongue plate 8 is not coupled, it can be easily determined visually whether or not the buckle is properly coupled. Furthermore, it can be ensured by providing a switch connected to an alarm or interlock mechanism.

FIG. 8 shows the state in which the buckle body 7 is attached, and is fixed to the sash 4 by passing bolts 50 through the bolt holes 13 and 14 of the attachment fitting 9.

On the other hand, there is a notch 5 in the center pillar 51 of the vehicle body.
A bolt 5 between the opposing surfaces 11 and 12 is fixed when the door is closed.
0 fits into the notch 52 of the receiving metal fitting 53.

In general, the sash 4 of the car door 3 does not have much strength, and if the buckle 1 is fixed there, the sash 4 may be distorted or damaged if a large force is applied to the webbing 2. With this configuration, most of the force applied to the buckle 1 is received by the center pillar 51 via the receiving metal fitting 53, making it possible to withstand even greater force.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the state of use of the present invention. Figure 2 is a front view in section showing the cover of the buckle body, Figure 3 is a longitudinal cross-sectional view at the center of the buckle body, Figure 4 is a rear view in cross section of the cover and mounting bracket of the buckle body, and Figure 5 is - cross-sectional view,
Figure 6 shows the state in which the operating member is pressed down.
FIG. FIG. 7 is a front view of the tongue plate. FIG. 8 is a perspective view showing how the buckle body and the receiving metal fitting are attached. 1... Batsukuru, 7... Batsukuru body, 8...
Tongue plate, 17... Frame, 18, 19
... Side plate, 23, 24 ... Long hole, 25 ... Notch, 26 ... Operation member, 28, 29 ... Leg, 30
...Lock pin, 33... Ejector, 36...
...Protrusion, 49...Engagement notch.

Claims (1)

[Scope of utility model registration request] It has a pair of side plates 18 and 19 that are rotatably supported relative to the door 3 and face each other, and has a long hole 2 extending from the lower ends of the side plates 18 and 19 to approximately the center thereof.
3 and 24, and both legs 28 and 29 are attached to the outside of the side plates 18 and 19 of the frame 17 so as to straddle them, and a notch 32 is formed approximately in the center of the rear edge of at least one of the legs. Legs 2
An operating member 26 is fixed to the lower ends of the lock pins 30 passing through the elongated holes 23 and 24, and the entire member is always biased upward. It is fitted into the formed notch 25 so as to be slidable back and forth, and is always biased forward, and at least one end thereof is opposed to the legs 28 and 29.
8 and 29, and a tongue plate 8 having an engagement notch 8' on its lower edge. Buckles in seat belt devices.