JP4068823B2 - Attachment part structure between buckle body and lower attachment and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for a mounting portion between a buckle body and a lower mounting tool and a method for manufacturing the same for mounting a buckle body to a mounted portion on a vehicle body side in a seat belt device of a vehicle.
[0002]
[Prior art]
Conventionally, there is a thing disclosed in Japanese Patent Publication No. 7-32284 as an attachment part structure of this type of buckle body and lower attachment.
[0003]
In this attachment portion structure, each end of the webbing is folded back through an insertion hole on the buckle body side or an insertion hole on the lower attachment (anchor) side. Then, sewing is performed in a state where each end of the webbing is superimposed on the middle part in the longitudinal direction of the webbing.
[0004]
[Problems to be solved by the invention]
However, as described above, when sewing is performed in a state where each end portion of the webbing is overlapped in the middle in the longitudinal direction of the webbing, both end portions of the webbing are prevented so that the triple overlapped form is not broken. In addition, it is necessary to sew with a sewing machine or the like while holding the intermediate portion in the longitudinal direction of the webbing.
[0005]
In particular, when the distance between the buckle body and the lower fixture is short and the buckle body and the lower fixture are close to the sewing portion, the end portions of the webbing and the longitudinal intermediate portion of the webbing are Since it becomes difficult to secure a sufficient space for holding, the three-layer overlapping form is liable to be lost, and the sewing work becomes difficult.
[0006]
Therefore, the object of the present invention is to sew in a state where each end portion of the webbing is overlapped with the longitudinal intermediate portion of the webbing in a triple manner when the buckle body and the lower fixture are close to the sewing part. It is an object of the present invention to provide an attachment portion structure between a buckle body and a lower attachment and a method for manufacturing the same.
[0007]
[Means for Solving the Problems]
In order to solve the above problem, the attachment structure of the buckle body and the lower fixture according to claim 1 includes a buckle body having a webbing insertion hole, a lower attachment having a webbing insertion hole and attached to the vehicle body side. , and a webbing for connecting and fixing said lower fitting and the buckle main body, one end of the webbing, the buckle body and the through the buckle body and one of the webbing inserting hole of the lower fixture Folded so as to be close to either one of the lower fixtures , overlapped with the longitudinal intermediate portion of the webbing and stitched to form a first sewing portion, and the other end of the webbing is as through the buckle body and the other of the webbing inserting hole of the lower fixture adjacent to one of said buckle main body and the lower fixture Returned to, in which the second sewn portion by being sewn is superposed on the first sewn portion are formed.
[0008]
In addition, as described in claim 2, in the first sewing portion, only the tip portion of one end portion of the webbing is sewn to the intermediate portion in the longitudinal direction of the webbing along a straight line along the width direction thereof. Also good.
[0009]
In addition, as described in claim 3, the sewing thread used in the first sewing portion may be colorless or the same color as the webbing.
[0010]
Furthermore, the manufacturing method of the mounting portion structure of claim 4 buckle main body and the lower fitting description, one end portion of the webbing, the buckle main body and through one of the webbing insertion hole of the buckle main body and the lower fixture Fold back so that one of the lower fixtures is close to the other, and sew one end of the webbing on the intermediate part in the longitudinal direction of the webbing to form a first sewing part, and then the other end of the webbing Is passed through the other webbing insertion hole of the buckle body and the lower fixture so as to be close to either the buckle body or the lower fixture, and the other end of the webbing is connected to the first The second sewing portion is formed by overlapping and sewing the sewing portion.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the attachment part structure of the buckle body and the lower attachment according to the embodiment of the present invention will be described.
[0012]
For example, as shown in FIG. 1, the attachment portion structure 1 is applied to a seat belt device mounted on a rear seat 50 of an automobile, and as shown in FIGS. 2 (a) and 2 (b). The buckle body 2, the lower fixture 10, and the webbing 20 are provided.
[0013]
The buckle body 2 is configured such that the tongue plate 54 on the continuous webbing 52 side can be connected and disconnected, and has a webbing insertion hole 4 through which the webbing 20 can be inserted. In the present embodiment, a tongue plate 54 is formed so as to be insertable and connectable from the distal end side of the buckle body 2, and a webbing insertion hole having a substantially rectangular hole shape in plan view that is long in the width direction at the proximal end portion of the buckle body 2. 4 is formed.
[0014]
The lower fixture 10 has a webbing insertion hole 14 and is formed to be attachable to the vehicle body side. In the present embodiment, the lower fixture 10 is formed in a shape obtained by bending a rectangular plate-like member into a substantially L shape, and a bolt insertion hole 11h is formed at one end thereof, and the other end thereof is provided with the bolt insertion hole 11h. A substantially oval webbing insertion hole 14 that is long in the width direction is formed. For example, between the seat surface portion 50a and the backrest portion 50b of the seat 50, a bolt (not shown) is inserted into the bolt insertion hole 11h in a state where one end portion of the lower fixture 10 is aligned with the mounted portion on the vehicle body side. The lower mounting tool 10 is fixedly attached to the vehicle body side by being screwed and fastened to the mounting site side through.
[0015]
The webbing 20 is a band-shaped member formed of a fiber material, and connects and fixes the buckle body 2 and the lower fixture 10 in the following manner.
[0016]
That is, one end portion 20a of the webbing 20 is folded back through the webbing insertion hole 14 on the lower fixture 10 side as shown in FIGS. 3 (a) and 3 (b). 20b (the intermediate portion 20b in the longitudinal direction of the webbing 20 between the buckle body 2 and the lower fixture 10). Then, at the overlapping portion, the one end portion 20a of the webbing 20 and the intermediate portion 20b in the longitudinal direction of the webbing 20 are stitched by the sewing thread L1 using a sewing machine or the like, thereby forming the first sewing portion 21.
[0017]
The first sewing portion 21 is stitched in such a manner that the first sewing portion 21 can be kept in the overlapping state when the first sewing portion 21 and the other end portion 20c of the webbing 20 are stitched as will be described later. If it can exhibit the intensity | strength of, it will not specifically limit.
[0018]
However, in the present embodiment, the tip of the one end portion 20a of the webbing 20 is stitched to the intermediate portion 20b of the webbing 20 along a straight line along the width direction. Thereby, the sewing work time at the time of forming the 1st sewing part 21 can be decreased, and work efficiency improves. Moreover, the usage-amount of the sewing thread | yarn L1 required when forming the said 1st sewing part 21 can be decreased.
[0019]
Further, the other end portion 20c of the webbing 20 is folded back through the webbing insertion hole 4 on the buckle body 2 side as shown in FIGS. Superimposed. Then, as shown in FIGS. 2 (a) and 2 (b), the first sewn portion 21 and the webbing in the overlapped stitch form of the one end portion 20a and the longitudinal intermediate portion 20b of the webbing 20 at the overlapped portion. 20 and the other end 20c are sewn with a sewing thread L2 using a sewing machine or the like to form a second sewing portion 22. Thereby, the 2nd sewing part 22 is formed in the form with which both ends 20a and 20c of the webbing 20, and the intermediate part 20b of the webbing 20 were piled up three times.
[0020]
Here, the second sewing portion 22 has a sufficient stitching strength so that the end portions 20a and 20c of the webbing 20 do not come off the intermediate portion 20b of the webbing 20 when the seat belt device is used. There is a need. In the present embodiment, the webbing 20 is reciprocated a plurality of times along the width direction of the webbing 20 and stitched.
[0021]
The attachment part structure 1 of the buckle body 2 and the lower attachment 10 is manufactured as follows.
[0022]
First, as shown in FIGS. 3 (a) and 3 (b), one end 20a of the webbing 20 cut into a predetermined length is folded back through the webbing insertion hole 14 on the lower fixture 10 side, The first sewing portion 21 is formed by overlapping the webbing 20 on the intermediate portion 20b in the longitudinal direction and sewing with a sewing machine or the like using the sewing thread L1.
[0023]
Thereafter, the other end 20c of the webbing 20 is folded back through the webbing insertion hole 4 on the buckle body 2 side as shown in FIGS. 4 (a) and 4 (b). Then, in a state where the other end portion 20c of the webbing 20 is held so as to be superimposed on the first sewing portion 21, the second sewing portion 22 is formed by sewing them together using a sewing thread L2 with a sewing machine or the like.
[0024]
The attachment part structure 1 of the buckle body 2 and the lower attachment 10 is manufactured as described above.
[0025]
According to the attachment part structure 1 of the buckle body 2 and the lower attachment 10 configured as described above, the one end part 20a of the webbing 20 is stitched on the intermediate part 20b of the webbing 20 so as to be stitched. Therefore, by overlapping the other end portion 20c of the webbing 20 with the first sewing portion 21, the end portions 20a and 20c of the webbing 20 can be easily connected to the longitudinal intermediate portion 20b of the webbing 20. It can be superposed. In this state, the other end portion 20c of the webbing 20 is held on the intermediate portion of the webbing 20 and is sewn and formed to form the second sewing portion 22, whereby the above-described triple overlap is achieved. Sewing in the combined state can be easily performed.
[0026]
At this time, it is not necessary to hold the one end 20a of the webbing 20 against the intermediate part 20b of the webbing 20, and it is sufficient to hold the other end 20c of the webbing 20 against the first sewing part 21. The above-described triple overlapping state can be maintained in a relatively narrow space. Therefore, even if the distance between the buckle body 2 and the lower fixture 10 is reduced, the buckle body 2 and the lower fixture 10 are not easily disturbed during the holding operation, and the buckle body 2 and the lower fixture 10 are not disturbed. The distance between can be reduced.
[0027]
Furthermore, in the present embodiment, since the tip end portion of the one end portion 20a of the webbing 20 is sewn to the intermediate portion 20b of the webbing 20 linearly along a straight line along the width direction, the first sewing portion Sewing work time when forming 21 can be reduced, and work efficiency is improved. Moreover, the usage-amount of the sewing thread | yarn L1 required when forming the said 1st sewing part 21 can be decreased.
[0028]
The sewing thread L1 used in the first sewing portion 21 is preferably colorless or the same color as the webbing 20. As a result, the sewing thread L1 can be made inconspicuous on the surface of the webbing 20, and for example, only the sewing thread L2 used for the sewing of the second sewing portion 22 is made conspicuous so that the number of times of sewing is only one. As a result, the appearance of the surface of the webbing 20 can be improved.
[0029]
In the present embodiment, one end 20a of the webbing 20 is inserted into the webbing insertion hole 14 on the lower fixture 10 side, and the other end 20c is inserted into the webbing insertion hole 4 on the buckle body 2 side. Conversely, one end 20a of the webbing 20 may be inserted into the webbing insertion hole 4 on the buckle body 2 side, and the other end 20b may be inserted into the webbing insertion hole 14 on the lower fixture 10 side.
[0030]
【The invention's effect】
According to the structure of the attachment part of the buckle body and the lower attachment device according to claim 1 configured as described above, one end of the webbing is overlapped with the intermediate part of the webbing and stitched to form the first sewing part. Therefore, the other end portion of the webbing is held in a state where it is overlapped with the first sewing portion and stitched to form the second sewing portion, so that each end portion of the webbing is intermediate in the longitudinal direction of the webbing. It is possible to easily perform sewing in a state of being superimposed on the part in a triple manner.
[0031]
Further, as described in claim 2, in the first sewing portion, only the tip portion of one end portion of the webbing is sewn to the intermediate portion in the longitudinal direction of the webbing along the straight line along the width direction thereof. Sewing work time when forming the first sewing portion can be reduced, and work efficiency is improved. Moreover, the usage-amount of the sewing thread | yarn required when forming the said 1st sewing part can be decreased.
[0032]
Furthermore, if the sewing thread used in the first sewing portion is colorless or the same color as the webbing, the sewing thread can be made inconspicuous on the webbing surface.
[0033]
According to the method for manufacturing the attachment portion structure of the buckle main body and the lower attachment according to claim 4 of the present invention, one end of the webbing is overlapped with the intermediate portion in the longitudinal direction of the webbing and stitched to form the first sewing portion. After forming, the other end of the webbing is overlapped with the first sewing part and stitched to form the second sewing part, so that each end of the webbing is overlapped in the middle in the longitudinal direction of the webbing in a triple manner. Sewing in the state can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an installation example of an attachment portion structure between a buckle body and a lower attachment according to an embodiment of the present invention.
FIG. 2 (a) is a side view showing the same mounting portion structure, and FIG. 2 (b) is a rear view showing the mounting portion structure.
FIG. 3 (a) is a side view showing a first sewing portion of the mounting portion structure same as above, and FIG. 3 (b) is a rear view showing the first sewing portion.
FIG. 4A is a side view showing a state in the middle of overlapping the other end of the webbing with the first sewing portion, and FIG. 4B is a rear view showing the same state.
[Explanation of symbols]
2 Buckle body 4 Webbing insertion hole 10 Lower fixture 14 Webbing insertion hole 20 Webbing 20a Webbing one end 20b Webbing intermediate part 20c Webbing other end 21 First sewing part 22 Second sewing part L1, L2 Sewing thread

Claims (4)

A buckle body having a webbing insertion hole, a lower attachment having a webbing insertion hole and attached to the vehicle body, and a webbing for connecting and fixing the buckle body and the lower attachment;
One end of the webbing is folded back so as to be close to the other one of the buckle body and the lower fixture through the webbing insertion hole of either the buckle body or the lower fixture . A first sewing portion is formed by being overlapped and stitched in the middle portion in the longitudinal direction,
The other end of the webbing is folded so as to be close to either the buckle body or the lower fixture through the other webbing insertion hole of the buckle body or the lower fixture, and The attachment part structure of the buckle main body and the lower attachment tool in which the second sewing part is formed by being overlapped and stitched to one sewing part. The attachment structure of the buckle body according to claim 1 and the lower fixture,
In the first sewing part,
The attachment part structure of a buckle main body and a lower attachment tool, wherein only the tip part of one end part of the webbing is stitched to the longitudinal intermediate part of the webbing along a straight line along the width direction thereof. The attachment structure of the buckle body and the lower attachment according to claim 1 or 2,
The sewing thread used in the first sewing part is an attachment part structure of a buckle body and a lower attachment, which is colorless or the same color as the webbing. One end of the webbing is passed through the webbing insertion hole of one of the buckle body and the lower fixture, and folded so as to be close to the other of the buckle body and the lower fixture ,
After forming the first sewing part by overlapping one end of the webbing with the intermediate part in the longitudinal direction of the webbing and sewing,
Folding the other end of the webbing through the other webbing insertion hole of the buckle body and the lower fixture so as to be close to either the buckle body or the lower fixture ,
The manufacturing method of the attachment part structure of a buckle main body and a lower attachment tool which forms a 2nd sewing part by making the other end part of the webbing overlap and sew on the 1st sewing part.

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