JP-7856874-B1 - Tongue plate slip-prevention device

Abstract

[Problem] To provide a tongue plate slippage prevention device that can prevent the tongue plate from slipping down with a simple configuration. [Solution] The tongue plate 3 slip-off prevention device is a tongue plate 3 slip-off prevention device provided in a vehicle, and comprises a flexible, elastic, and adhesive convex member 9 that is placed on the webbing belt 4 provided in the seat belt device, and a flexible adhesive member 10 that has an adhesive surface and is attached to the webbing belt 4 with the convex member 9 interposed therebetween. [Selection Diagram] Figure 3

Inventors

• 武田 久治

Assignees

• 武田企画株式会社

Dates

Publication Date

20260512

Application Date

20250417

Claims (3)

1. A device to prevent slippage of the tongue plate of a seat belt system installed in a vehicle, A flexible, elastic, and adhesive convex member is placed on the webbing belt of the aforementioned seat belt device, A tongue plate slip-prevention device comprising a flexible adhesive member for fixing the convex member to the webbing belt, which is attached to the webbing belt with the convex member interposed therebetween .
2. The tongue plate slip-off prevention device according to claim 1, wherein the convex member is sandwiched between the webbing belt and the adhesive member at positions excluding the front and rear ends of the adhesive member along the longitudinal direction of the webbing belt.
3. In the adhesive member, a non-adhesive region is formed on a part of the surface where the adhesive layer is formed, where the adhesive layer is not formed. The tongue plate slip-off prevention device according to claim 1 or 2, wherein the non-adhesive area is exposed to the outside air from the rear end of the adhesive member.

Description

This disclosure relates to a device for preventing slippage of the tongue plate in a seat belt system of a vehicle such as a passenger car. Passenger cars and other vehicles are equipped with seat belt systems to ensure the safety of their occupants. A seat belt system generally consists of a webbing belt, a tongue plate that is movable along the longitudinal direction of the webbing belt, and a buckle fixed to the seat that allows the tongue plate to be attached and detached. In seat belt devices with such a configuration, a tongue stopper (a device to prevent the tongue plate from slipping off the webbing belt) made of plastic resin is provided on the webbing belt for purposes such as preventing the tongue plate from slipping off (for example, Patent Document 1). The tongue stopper generally consists of a first button with a convex portion and a second button with a concave portion. It is secured by inserting the convex portion into a small hole formed in the webbing and sandwiching the webbing between the first and second buttons. Patent No. 6284501 This is a schematic diagram illustrating the structure of a seat belt device equipped with a tongue plate slippage prevention device according to one embodiment of the present disclosure.(a) A cross-sectional view taken along line A-A in Figure 1 of the tongue plate slip-off prevention device and webbing belt in one embodiment of the present disclosure. (b) A cross-sectional view taken along line B-B in Figure 1 of the tongue plate slip-off prevention device and webbing belt in one embodiment of the present disclosure. (c) A schematic diagram illustrating the structure of the tongue plate included in the seat belt device in one embodiment of the present disclosure.This is a cross-sectional view taken along line C-C in Figure 1 of a tongue plate slippage prevention device, webbing belt, and tongue stopper according to one embodiment of the present disclosure.This is a schematic diagram illustrating the structure of a seat belt device equipped with a tongue plate slippage prevention device, which is a modified example of one embodiment of the present disclosure. Referring to Figures 1 and 2, a tongue plate slip-prevention device in one embodiment of the present invention will be described. Figure 1 is a partial view of a seat belt device equipped with a tongue plate slip-prevention device. In Figure 1, the seat belt device 1, which is installed in a vehicle such as a passenger car (not shown), comprises a buckle 2 fixed to the seat side (not shown) via a webbing belt 11, a tongue plate 3 that can be fixed to the buckle 2, and a webbing belt 4 to which the tongue plate 3 is mounted so as to be movable along the longitudinal direction. Buckle 2 has an insertion opening (not shown) into which the tongue plate 3 is inserted. Buckle 2 also incorporates a locking mechanism (not shown) that securely fastens the tongue plate 3 when it is inserted into the insertion opening. The tongue plate 3 is fastened and released by operating a release button (not shown) on buckle 2. This buckle 2 is based on prior art. The tongue plate 3 comprises a tongue plate body 7, formed from a metal such as an aluminum alloy, and a holder 8 that holds one end of the tongue plate body 7. The tongue plate body 7 is the part that is directly inserted into the buckle 2. The holder 8 has an opening 8a into which the webbing belt 4 is inserted, and the tongue plate 3 is movable along the longitudinal direction of the webbing belt 4 through the opening 8a. The holder 8 is molded from, for example, plastic resin. The webbing belt 4 is a strip of fabric extending in one direction, and refers to the cloth belt commonly recognized as a "seat belt." In Figures 1 and 2(a), a slender, convex member 9 is positioned below the tongue plate 3 and on the upper surface of the webbing belt 4. To enhance adhesion to the webbing belt 4, it is desirable that the convex member 9 has adhesive properties across its entire surface and is made of a soft, elastic material. Furthermore, the convex member 9 may be made not only of a soft, elastic resin, but also of a hard resin or a material other than resin (paper, rubber, metal, mineral, etc.). The convex member 9 has a predetermined thickness and is positioned approximately in the center of the webbing belt 4 such that its longitudinal direction coincides with the direction intersecting (perpendicular to) the longitudinal direction of the webbing belt 4 (Figure 1). It is preferable that the convex member 9 be attached to the side of the webbing belt 4 facing the tongue plate body 7. The shape of the convex member 9 is not limited to elongated or rectangular shapes, but is arbitrary. A thin, flexible, sheet-like adhesive member (tape member) 10 with an adhesive surface is attached to the webbing belt 4, covering the convex member 9. Figure 2(a) is a cross-sectional view taken along line A-A in Figure 1. The adhesive member 10 comprises a base material 12 made of a thin,