JPH021048Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an erroneous operation prevention device that prevents the seat belt buckle from being released unexpectedly due to an occupant's elbow colliding with the release button of the seat belt buckle.

[Prior art]

Among the seatbelt buckles that make it easy to put on and take off the vehicle seatbelt, it is supported by the upper end of the stalk part that stands up on the floor in the center of the car body, and the tongs attached to the tip of the seatbelt can be held with one hand. In a buckle that can be inserted and removed by operation, a push button for releasing the tongs from the buckle is usually provided so that it can be pushed and slid against the buckle body along the direction of inserting and removing the tongs, and the push button is placed with the push button facing upward. Consideration has been taken to improve operability.

[Problem that the invention attempts to solve]

However, in this type of conventional seat belt buckle, the pressing operation surface of the tongue release slide button faces forward and upward, making it easy to press the button with the thumb. It comes into contact with the pressing operation surface of the slide button,
There was a risk that the slide button would be pushed in unexpectedly, causing the tongue to separate from the buckle, making it impossible to ensure the safety of the occupants through the seat belt. In order to overcome the problem of erroneous buckle operation due to elbow collision, a buckle is provided in which a cover member around the pressing operation surface of the slide button is provided with a rib-like protrusion to prevent the passenger's elbow from directly contacting the slide button.

[Refer to Japanese Utility Model Application Publication No. 58-68106] and a buckle in which a portion of the slide button other than the pressing operation surface is surrounded by a fixed cover member has been proposed. However, even with a buckle that has measures to prevent erroneous operation as described above, although it is possible to avoid erroneous operation due to elbow collision, the cover member around the slide button gets in the way of pressing operation, making it difficult to release the buckle in an emergency such as a vehicle overturning. There were concerns that this would be a hindrance, and there was room for immediate improvement in this regard. The present invention focuses on the problem of erroneous operation caused by elbow collisions that conventional seat belt buckles had, and was developed with the aim of solving the problem. is surrounded by a movable cover member movable in the same direction as the slide button, and a blocking mechanism is provided between the movable cover member and the buckle body to prevent the movable cover from moving independently. In addition, by making the blocking mechanism releasable by pressing and displacing the slide button, the movable cover member can only move together with the slide button when the slide button is pressed with a finger. This is intended to prevent erroneous operation of the slide button without interfering with the operation of the slide button.

[Means to solve the problem]

In order to achieve the above object, the present invention has a seat belt buckle in which a slide button for releasing a tongue is elastically supported by a buckle body so as to be movable along the direction of inserting and removing the tongue, when the slide button is pressed. Surrounding the portion other than the surface with a movable cover member movable along the same direction,
A movement preventing mechanism is interposed between the movable cover member and the buckle body to prevent independent movement of the movable cover member and to be released by movement of the slide button.

【Example】

Embodiments of the present invention will be described in detail below based on the accompanying drawings. FIG. 1 is a sectional side view showing an example of the seat belt buckle of the present invention, and FIGS. 2 and 3 are explanatory views of the function of the buckle. In these figures, 1 is a buckle body supported on the floor of a vehicle such as an automobile via a stalk member 2, 3 is a buckle base with a U-shaped cross section and constitutes a strength member of the buckle body 3, and 4 is a buckle base 3. A slide button for releasing the tongue is disposed between both side walls of the seat belt 5 and is movable along the insertion/removal direction of the tongue 6 connecting the seat belt 5, and the slide button 4 is connected to the rear end and the buckle base. A compression spring 8 compressed between a spring receiving member 7 and a spring receiving member 7 secured to When pressed and moved in the v direction, the buckle base 3
The tongue 6 is engaged with a known latch mechanism provided in the buckle body 1, and the tongue 6 is released from the buckle body 1 by releasing the latch mechanism. Reference numeral 9 denotes a fixed cover member attached to surround the outer periphery of the buckle base 3 and the slide button 4, and there is no space between the fixed cover member 9 and the slide button 4 other than the pressing operation surface 10 of the slide button 4. A movable cover member 11 is inserted that surrounds the area and is movable in the same direction as the slide button 4, and the front end surface 11a of the movable cover member 11 and the pressing operation surface 10 of the slide button 4 are inserted.
are exposed to the outside through an opening 12 formed in the front surface of the fixed cover member 9. Further, a projection 13 is formed on the upper surface of the slide button 4 to fit into a groove 14 formed on the lower surface of the movable cover member 11, so that the range of relative movement between the slide button 4 and the movable cover member 11 is limited. There is. On the other hand, the rear end 11b of the movable cover member 11
The side wall 3' of the buckle base 3 in
A long hole 15 extending in a direction perpendicular to the pressing direction of the slide button 4 is bored, and a locking pin 16 is movably inserted into the long hole 15. When located at the top end,
The rear end 11 of the movable cover member 11 is attached to the outer periphery of the movable cover member 11.
b is engaged to prevent movement of the movable cover member 11 in the direction of arrow v. Further, the intermediate portion of the locking pin 16 is inserted into a dogleg-shaped guide hole 17 formed in the slide button 4, and when the slide button 4 is pressed and slid in the direction of the arrow v or the arrow u. , the movable cover member 1 is guided by the inclined portion 17a of the guide hole 17 and along the long hole 15 of the buckle base 3.
The movable cover member 11 is configured to shift between a position where it can engage with the rear end 11b of the movable cover member 11 and a position where it is retracted from that position and allows the movable cover member 11 to slide. The erroneous operation prevention device of the present invention has the above-mentioned configuration, and its operation will be explained next. First, when the tongue 6 is engaged with the buckle body as shown in FIG. or,
Assuming that an object P having a spherical surface with a radius of curvature of 20 mm or more collides with the slide button 4, the object P will collide with the upper surface of the tongs 6 and the movable cover because its radius of curvature is much larger than that of the finger. It contacts the front end surface 11a of the member 11 and does not directly contact the slide button 4. At this time, the rear end 11b of the movable cover member 11 is guided by the inclined portion 17a of the guide hole 17 of the slide button 4 and engages with the locking pin 16 located at the upper end of the elongated hole 15, and moves in the direction of arrow v. Therefore, even when the object P collides with the front end portion 11a, it is received and prevents the slide button 4 from moving in the pressing operation direction v. Therefore, if the occupant's elbow or the like accidentally collides with the buckle, the slide button 4 will not be pushed in and the latch mechanism will not be released, which prevents the tongue 6 from coming off unexpectedly and protects the occupant from the seatbelt 5. It can be secured. Next, as shown in Fig. 2, attach the tongs 6 to the buckle body 1.
When the pressing operation surface 10 of the slide button 4 is pressed in the direction of the arrow v with the tip of the finger S in order to release the tongue 6 in the fitted state, the slide button 4 is moved due to the phase shift of the guide hole 17. Therefore, the locking pin 16 is moved to the lower end of the elongated hole 15, disengaging from the movable cover member 11, and allowing the movable cover member 11 to move freely. Therefore, when the slide button 4 and the movable cover member 11 are further pressed, the movable cover member 11 moves its front end surface 11 as shown in FIG.
a is retracted until it is approximately flush with the pressing operation surface 10 of the slide button 4, and in this state, the slide button 4 is pushed in the direction of the arrow v, so that the latch mechanism that engages with the slide button 4 is released, The tongs 6 will be separated from the buckle body 1. Note that when the pressing force of the finger S on the slide button 4 is removed, the slide button 4 slides in the direction of the arrow U due to the biasing force of the compression spring 8, and the projection 13 and the groove 14 fit together. moves the movable cover member 11 in the same direction, and also moves the movable cover member 11 in the same direction.
7, the locking pin 16 is moved to the upper end position of the elongated hole 15, and the state shown in FIG. 1 is restored.

[Effect of the idea]

As mentioned above, the erroneous operation prevention device of the present invention is
A movable cover member movable in the same direction surrounds the part other than the pressing operation surface of the tong release slide button that is movable along the tong insertion/removal direction with respect to the buckle body. Since a movement prevention mechanism is interposed between the buckle body and the movable cover member to prevent the movable cover member from moving independently and is released by the movement of the slide button, the occupant's elbows can be prevented in the event of a vehicle collision, etc. The movable cover member prevents the tongs from coming into contact with the slide button, and prevents the tongs from unexpectedly detaching from the buckle body. It has the excellent effect of making it possible to move the slide button so that it does not get in the way of pressing the slide button, and the fixed cover member around the slide button does not interfere with the operation, like the conventional buckle with measures to prevent erroneous operation. This eliminates the inconvenience caused by the seatbelt, which makes the operation smooth during emergency evacuation, and together with the action of preventing erroneous operation by the movable cover member, greatly contributes to ensuring the safety of vehicle occupants by the seatbelt.

[Brief explanation of drawings]

1 to 3 are side sectional views showing one embodiment of a seatbelt buckle to which the erroneous operation prevention device according to the present invention is applied, and FIG. 1 shows the state when erroneous operation is prevented due to a collision with an elbow, etc.; FIG. 2 shows the initial state of the normal tong release operation, and FIG. 3 shows the state when the tongs are released. 1...Batsukuru body, 3...Batsukuru base,
4...Slide button, 6...Tong, 10...
Press operation surface, 11...Movable cover member, 15...
Long hole, 16... Locking pin, 17... Guide hole, 17
a...Slope part.

Claims (1)

[Claims for Utility Model Registration] 1. In a seat belt buckle in which a slide button for releasing the tongue is elastically supported by the buckle body so as to be movable along the tongue insertion/removal direction, The part is surrounded by a movable cover member movable in the same direction, and a long hole is formed in both side walls of the buckle base in a direction perpendicular to the moving direction of the slide button, and the long hole is inserted through the long hole. an engagement position that engages the rear end of the movable cover member along the line to prevent movement of the movable cover member;
a locking pin that is detachable from the rear end of the movable cover member and can be moved between a non-engaged position that allows the movable cover member to move; It has an inclined portion that moves the pin between the non-engaging position that follows the pressing movement of the slide button and allows the movable cover member to move, and the engaging position that prevents the movable cover member from moving. A device for preventing erroneous operation of a seatbelt buckle, characterized in that it is provided with a long hole for guiding an engagement pin. 2 having a groove formed on either the upper surface of the slide button or the lower surface of the movable cover member, and a protrusion formed on the other surface facing the groove and fitting into the groove; The seat belt buckle erroneous operation prevention device according to claim 1, wherein both the slide button and the movable cover are provided so as to be relatively movable within a limited range. .