JP2010083151A - Tongue stopper and seatbelt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tongue stopper capable of being attached to a webbing with high attachment strength while maintaining the strength of the webbing and reliably suppressing the occurrence of constriction. <P>SOLUTION: The tongue stopper 11 includes a male disk body 21 having a pin 32 and a female disk body 22 having a fitting hole 42 into which the pin 32 is fittable. The pin 32 penetrating the webbing 3 is fitted into the fitting hole 42 so that the male disk body 21 and the female disk body 22 are faced to each other and attached to the webbing 3. A plurality of first and second engagement projections 33, 43 are formed on first and second attachment surfaces 31a, 41a of disk main bodies 31, 41 of the male disk body 21 and the female disk body 22, the first and second attachment surfaces 31a, 41a facing the webbing 3. The first and second engagement projections 33, 43 have a height H smaller than the thickness T of the webbing 3 and are arranged so as not to interfere with each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tongue stopper attached to a webbing to hold a tongue plate for a seat belt in a predetermined position, and a seat belt device using the same.

2. Description of the Related Art Conventionally, in a seat belt device, a tongue plate that is movable with respect to a webbing by attaching a tongue stopper to a predetermined position of the webbing is held at a position where it can be easily gripped when the seat belt is mounted.
As a tongue stopper that regulates the movement of the tongue plate, a pair of disk bodies are brought into contact with each other via webbing, and a pin provided on one disk body is passed through the webbing and fitted to the other disk body. What is attached to webbing is known (for example, refer to patent documents 1).

In the tongue stopper described in Patent Document 1, a plurality of protrusions are formed on one disk body, and when mounted on the webbing, the protrusions pierce the webbing and a plurality of circumferential grooves formed on the other disk body Get in. Thereby, the load of the tongue plate concentrated on the penetrating portion of the pin is dispersed to suppress the occurrence of the webbing constriction caused by the concentration of the load.
Japanese Patent Publication No. 5-81242

  However, although the tongue stopper can suppress the occurrence of constriction, there is a possibility that the strength of the webbing itself may be reduced when a plurality of protrusions penetrate and penetrate the webbing. In addition, since the protrusions are provided only on one of the panels, there is a problem that it is difficult to obtain high attachment strength to the webbing.

  The present invention has been made in view of the above circumstances, and its purpose is a tongue that can be attached to a webbing with high attachment strength while suppressing the occurrence of constriction more reliably without causing a decrease in the strength of the webbing. It is to provide a stopper and a seat belt device.

The above object of the present invention is achieved by the following configurations.
(1) A tongue stopper attached to the webbing,
A male board body having a pin formed at the center position on a first mounting surface facing one surface of the webbing, and a plurality of first engaging protrusions;
A female disc having a fitting hole formed at the center of the second mounting surface facing the other surface of the webbing so that the pin can be fitted through the webbing, and a plurality of second engaging projections. With body,
The plurality of first and second engaging protrusions have a height dimension smaller than a thickness dimension of the webbing, and the male board body and the female board body are attached to the webbing. A tongue stopper, wherein the tongue stoppers are arranged at positions that do not interfere with each other.
(2) The plurality of first engagement protrusions are arranged on at least one concentric circle with respect to a center position of the first attachment surface, and the plurality of second engagement protrusions are centers of the second attachment surface. The tongue according to (1), wherein the tongue is disposed on at least one concentric circle with respect to a position, and the concentric circle of the first engaging protrusion and the concentric circle of the second engaging protrusion are different in diameter from each other. Stopper.
(3) According to (1) or (2), the male board body and the female board body are attached to the webbing by caulking the tip of the pin fitted in the fitting hole. The tongue stopper described.
(4) The pin and the fitting hole have a non-circular shape in which the male disc body and the female disc body are relatively phased in the circumferential direction. The tongue stopper according to any one of the above.
(5) A seat belt device comprising the tongue stopper according to any one of (1) to (4).

  According to the tongue stopper of the present invention, the first and second mounting surfaces facing the webbing of the male board and the female board are respectively provided with a plurality of first and second heights smaller than the thickness of the webbing. Two engaging protrusions are formed, and the plurality of first and second engaging protrusions are arranged at positions where they do not interfere with each other in a state in which both plate bodies are attached to the webbing. As a result, the first and second engagement protrusions are locked to the webbing without penetrating the webbing, and the load of the tongue plate applied to the penetrating portion of the pin without causing the strength reduction of the webbing is engaged with the first and second engagements. It is possible to disperse the protrusions to suppress the occurrence of webbing constriction due to load concentration, and to obtain a state of attachment to the webbing with high attachment strength.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment according to a tongue stopper and a seat belt device of the present invention will be described with reference to the drawings.
1 is a perspective view showing an example of a seat belt device provided in an automobile, FIG. 2 is a cross-sectional view showing a state in which a tongue stopper is attached to a webbing, and FIG. 3 is a view of male and female boards constituting the tongue stopper. It is sectional drawing and a top view.

  As shown in FIG. 1, this seat belt device 1 is a three-point seat belt device, and includes a retractor 2, a webbing 3, a shoulder anchor 4, a tongue plate 5, a locking bracket 6, and a buckle 7 incorporating an emergency lock mechanism. It is configured.

  The emergency lock mechanism detects sudden deceleration of the vehicle and locks the webbing 3 so that it cannot be pulled out. The webbing 3 is drawn upward from a retractor 2 provided near the vehicle floor, and is folded downward via a shoulder anchor 4 installed near the vehicle roof.

  A tongue plate 5 is slidably mounted on the folded webbing 3, and the lower end of the webbing 3 is fixed near the vehicle floor by a locking fitting 6. A tongue stopper 11 is attached to the webbing 3 going downward. The tongue plate 5 is locked by the tongue stopper 11 and is held at a predetermined height position that is easy to grip when the seat belt is worn. .

  When the seat belt device 1 is used, the webbing 3 is pulled out in front of the seat back S1 of the vehicle seat S against the retracting force of the retractor 2 as shown by a chain line in FIG. The tongue plate 5 is coupled to the buckle 7 provided on the opposite side surface.

  As shown in FIGS. 2 and 3, the tongue stopper 11 includes a male board body 21 and a female board body 22 made of hard resin or the like.

  The male disc body 21 has a disc body 31 having a first mounting surface 31 a facing one surface of the webbing 3 and formed in a disc shape. Further, the male plate body 21 includes a pin 32 projecting toward the female plate body 22 at the center position of the first mounting surface 31a, and the female plate body 22 around the pin 32 of the first mounting surface 31a. A plurality of conical engagement protrusions 33 protruding to the side are formed.

  On the other hand, the female disc body 22 has a disc main body 41 having a second mounting surface 41 a facing the other surface of the webbing 3 and formed in a disc shape. Further, the male board body 22 is formed with a fitting hole 42 in which the pin 32 of the male board body 21 can be fitted via the webbing 3 at the center position of the second mounting surface 41a. Around the fitting hole 42 in 41a, a plurality of conical engaging projections 43 projecting toward the male board 21 are formed.

  As shown in FIGS. 3B and 3D, the first engagement protrusions 33 of the male disc body 21 are arranged on concentric circles S1, S2, S3 having a plurality of different diameters with respect to the center position of the first mounting surface 31a. And are arranged radially at intervals in the circumferential direction. Similarly, the second engagement protrusions 43 of the female disc body 22 are formed on a plurality of concentric circles S4 and S5 having different diameters with respect to the center position of the second mounting surface 41a, and are spaced apart in the circumferential direction. They are arranged radially.

  Here, the concentric circles S1, S2, S3 in which the first engagement protrusions 33 of the male disc body 21 are arranged and the concentric circles S4, S5 in which the second engagement projections 43 of the female disc body 22 are arranged have a diameter. Each is different. Accordingly, the first engagement protrusion 33 and the second engagement protrusion 43 are disposed at positions where they do not interfere with each other in a state where the male board body 21 and the female board body 22 are attached to the webbing 3.

  Further, as shown in FIG. 2, the conical first and second engaging protrusions 33 and 43 have a height dimension H from the first and second mounting surfaces 31a and 41a of the panel main bodies 31 and 41, respectively. It is smaller than the thickness dimension T of the webbing 3. For example, when the thickness dimension T of the webbing 3 is 1.2 mm, the height dimension H of the first and second engagement protrusions 33 and 43 is set to 1.0 mm. The diameter d of the second engagement protrusions 33, 43 on the first and second attachment surfaces 31a, 41a is set to 1.0 mm.

  In order to attach the tongue stopper 11 to the webbing 3, first, the pin 32 of the male disc body 21 is inserted in advance into the approximate center in the width direction at a predetermined height position of the webbing 3. Next, the female board body 22 is abutted against the male board body 21 through the webbing 3 while inserting the pins 32 into the fitting holes 42 and fitting them. Then, the two plate bodies 21 and 22 are attached to the webbing 3 by fixing the tip of the pin 32 fitted in the fitting hole by press caulking. In addition, the fixing method of the pin 32 and the fitting hole 42 is not limited to the above.

  In this way, the male board body 21 and the female board body 22 are attached to the webbing 3 in a state where the webbing 3 is sandwiched by the engagement force between the pin 32 and the fitting hole 42, and further, the male board body 21. In addition, the first and second engaging protrusions 33 and 43 of the female disc body 22 bite into the webbing 3.

  According to the tongue stopper 11 of the present embodiment described above, the thickness dimension T of the webbing 3 is provided on the first and second mounting surfaces 31a and 41a facing the webbing 3 of the male board body 21 and the female board body 22, respectively. A plurality of first and second engaging protrusions 33 and 43 having a smaller height dimension H are formed, and the plurality of first and second engaging protrusions 33 and 43 are configured such that the two disk bodies 21 and 22 are webbed 3. Are arranged at positions where they do not interfere with each other. As a result, the first and second engaging protrusions 33 and 43 are locked to the webbing 3 without penetrating the webbing 3, and the load of the tongue plate 5 applied to the penetrating portion of the pin 32 without causing the strength of the webbing 3 to decrease. Can be dispersed by the first and second engaging protrusions 33 and 43 of the two plate bodies 21 and 22, and the occurrence of the constriction of the webbing 3 due to the concentration of the load can be more reliably suppressed, and the attachment strength is high. The state of attachment to the webbing can be obtained.

  Further, the concentric circles S1, S2, S3 in which the first engagement protrusions 33 of the male disc body 21 are arranged and the concentric circles S4, S5 in which the second engagement projections 43 of the female disc body 22 are arranged have diameters, respectively. Is different. Thus, the first engagement protrusion 33 and the second engagement protrusion 43 can reliably prevent the male board body 21 and the female board body 22 from interfering with each other in a state where the male board body 21 and the female board body 22 are attached to the webbing 3. The male board body 21 and the female board body 22 can be satisfactorily attached to the webbing 3 without causing poor attachment due to interference between the first and second engagement protrusions 33 and 43.

  In FIG. 2, the first and second engagement protrusions 33 and 43 are arranged on the same cross section, but may be arranged on different cross sections, and the second engagement protrusion 43 is replaced by the first engagement protrusion. You may arrange | position so that it may be located in the middle in the circumferential direction of 33. Therefore, the pin 32 and the fitting hole 42 may be formed to have a non-circular shape in which the male disc body 21 and the female disc body 22 are phased relative to each other in the circumferential direction. As shown, the pin 32 and the fitting hole 42 may be formed in a rectangular shape so that the second engaging protrusion 43 and the first engaging protrusion 33 are arranged 45 degrees apart in the circumferential direction. Alternatively, it may be oval.

In addition, this invention is not limited to the thing of the said embodiment, A change or improvement etc. are possible suitably.
For example, the first and second engaging protrusions of the present invention may be formed in a conical shape whose apex is located on the center of the bottom surface as in the present embodiment, or the apex is offset from the center. It may be formed in a conical shape. For example, as shown in FIG. 5, the apexes of the first and second conical protrusions 33 ′ and 43 ′ are formed on the radially outer positions of the disk bodies 21 and 22 on the outer circumference of the bottom surface. Has been.
In addition, the first and second engagement protrusions of the present invention may be any one that can bite into the webbing 3 and generate a locking force with the webbing 3, and preferably has a conical shape. Also good.

It is a perspective view which shows an example of the seatbelt apparatus provided in the motor vehicle. It is sectional drawing which shows the attachment state to the webbing of the tongue stopper of one Embodiment of this invention. It is sectional drawing and a top view of the male board body and female board body which comprise the tongue stopper of one Embodiment of this invention. It is sectional drawing of the male board body and female board body which show the modification of the pin of this invention, and a fitting hole. It is sectional drawing of the male board body and female board body which show the modification of the 1st and 2nd engagement protrusion of this invention.

Explanation of symbols

3 Webbing 11 tongue stopper 21 male board body 22 female board body 31a first attachment surface 41a second attachment surface 32 pin 33 first engagement protrusion 43 second engagement protrusion 42 fitting holes S1, S2, S3, S4, S5 Concentric circle H Height dimension T Thickness dimension.

Claims (5)

A tongue stopper attached to the webbing,
A male board body having a pin formed at the center position on a first mounting surface facing one surface of the webbing, and a plurality of first engaging protrusions;
A female disc having a fitting hole formed at the center of the second mounting surface facing the other surface of the webbing so that the pin can be fitted through the webbing, and a plurality of second engaging projections. With body,
The plurality of first and second engaging protrusions have a height dimension smaller than a thickness dimension of the webbing, and the male board body and the female board body are attached to the webbing. A tongue stopper, wherein the tongue stoppers are arranged at positions that do not interfere with each other.   The plurality of first engagement protrusions are disposed on at least one concentric circle with respect to the center position of the first attachment surface, and the plurality of second engagement protrusions are relative to the center position of the second attachment surface. 2. The tongue stopper according to claim 1, wherein the tongue stopper is disposed on at least one concentric circle, and the concentric circle of the first engaging protrusion and the concentric circle of the second engaging protrusion have different diameters.   3. The tongue stopper according to claim 1, wherein the male board body and the female board body are attached to the webbing by crimping a tip end of the pin fitted in the fitting hole.   The said pin and the said fitting hole have a non-circular shape by which the said male disc body and the said female disc body are phased in the circumferential direction relatively, The one in any one of Claims 1-3 characterized by the above-mentioned. The tongue stopper described.   A seatbelt device using the tongue stopper according to any one of claims 1 to 4.

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