JP2565273Y2 - Through anchor for seat belt - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through anchor used for holding a seat belt, which is mounted on an automobile or the like, on a vehicle body.

[0002]

2. Description of the Related Art Generally, a through anchor of this type is provided with a belt insertion hole through which a seat belt is inserted, and a bolt insertion hole through which an anchor bolt to be attached to a vehicle body is inserted. And this through anchor
It is necessary to be able to swing freely around the anchor bolt so as to be able to cope with changes in the physique and posture of the occupant.

[0003] Conventionally, as a method of allowing swing of the through anchor and preventing a metal contact sound (unusual noise) between the through anchor and the anchor bolt due to the swing, for example, there is a conventional example. As disclosed in Japanese Unexamined Patent Publication No. 57-109845, there is known one in which an elastic bush made of resin or rubber is interposed on a mounting seat surface of a bolt insertion hole. In this case, an annular concave groove is formed in the elastic bush so as to fit the edge of the bolt insertion hole, and the flange is positioned on both sides of the annular groove to prevent the elastic groove from coming off.

[0004]

However, when the elastic bush having the above structure is used, in order to mount the elastic bush in the bolt insertion hole, the elastic bush is once pressed and shrunk in the radial direction, and then the bolt is forcibly inserted. Must be inserted into the hole. As described above, in the related art, the mounting of the elastic bush is very troublesome, so that there is a problem that the mounting operation of the through anchor accompanying the mounting of the elastic bush becomes complicated. In addition, the number of parts increases, and there is a problem in terms of parts management.

[0005] In view of the above-mentioned problems in the prior art, the present invention allows swinging of a through anchor without using an elastic bush, and prevents generation of abnormal noise due to the swinging. It is an object of the present invention to provide a seat belt through anchor which can be used.

[0006]

Means for Solving the Problems] In the present invention for this purpose comprises a belt insertion hole shea <br/> Toberuto is inserted, and a bolt insertion hole anchor bolts attached to the vehicle body side is inserted
At least the periphery of the bolt insertion hole of the anchor
Mold covered by mold covering part made of grease
Made, there is provided a through anchor for a seat belt, said motor
The shield cover is provided at the periphery of the bolt insertion hole.
On both sides of the anchor bolt head and body
Each has a corresponding pair of mounting seats,
A plurality of projections integral with the mold covering portion are formed on the seating surface at intervals in the circumferential direction.

According to this feature, the through anchor is
The anchor bolts and body
There is no longer any metal contact between
Lou anchor itself bolt axial backlash is being excluded
Noise from the through anchor (ie,
Metal contact noise and rattling noise) are effectively prevented.
You. In addition, the through anchor is the surface of the mold coating.
Due to the effect of multiple projections on each mounting seat surface on the back,
Connection between the anchor and the anchor bolt head and body.
Contact area and contact resistance (friction resistance) have been minimized
The smoothness of the through anchor around the anchor bolt
Sliding becomes possible. Furthermore, with the through anchor as before
Requires special provision of a soundproofing member such as a separate elastic bush
There is no.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing a state in which a seat belt through anchor according to the present invention is attached to a vehicle body, and FIG. 2 is a front view of the seat belt through anchor according to the present invention.

As shown in FIGS. 1 and 2, the through anchor 1 is formed by applying a mold coating of a resin material to the entire anchor 2. Here, the anchor 2 includes an attachment plate 4 having a bolt insertion hole 4a formed therein, and a ring-shaped belt insertion member 6 held at the lower end of the attachment plate 4. Further, a belt-shaped insertion hole 10 having a long hole shape is formed in the belt-inserted body 6 covered with the mold so that the seat belt 5 can be inserted.

The mold cover 3 of the anchor 2 has a front surface and a back surface on the periphery of the bolt insertion hole 4a.
And a pair of mounting seat surfaces 7 , 7
And one of the mounting seat surfaces 7 is an anchor bolt 9 to be described later.
And the other mounting seat surface 7 is mounted on the vehicle body (described later).
Washers 11). A hemispherical projection 8 is formed integrally with the mold cover 3 on each of the mounting seat surfaces 7 and 7. Here, protrusion 8
Are provided at intervals of 90 ° along the circumferential direction of the bolt insertion hole 4a.

Next, a case where the through anchor 1 is attached to the vehicle body will be described. First, the anchor bolt 9 is inserted into the bolt insertion hole 4a of the through anchor 1. Then, the washer 11 is removed from the screw shaft 9a of the anchor bolt 9.
After that, the shaft portion 9a is screwed to the vehicle body side, and the bolt of the mold covering portion 3 is inserted between the seat plate 9b integrally formed on the head of the bolt 9 and the vehicle body (the washer 11). Insertion hole 4
a Press the peripheral edge. Thus, the through anchor 1
The in the state mounted on the vehicle body, the through anchor 1, with the metal each other place in contact is not at all between the anchor bolt 9 and the vehicle body (washer 11), sul
-Removal of backlash in the bolt axis direction of anchor 1
From the above, abnormal noise (that is, metal
No contact noise or rattling noise is generated. Further, since the front and back each four projections 8 formed on the mounting seat surface 7 of the through anchor 1 is in a state of contact with each point on the seat plate 9b and the washer 11 of the anchor bolt 9, Suruan
Car 1 anchor bolt 9 head and body (washer
11) each contact area and contact resistance (friction resistance)
Reduce the size of the anchor bolt 9 around the anchor 1
Can be smoothly performed.

As described above, the swing of the through anchor 1 can be allowed and the generation of abnormal noise due to the swing can be prevented without separately interposing the elastic bush. The work of attaching the 1 to the vehicle body becomes extremely easy, the number of parts can be reduced, and the parts can be easily managed.

In the above embodiment, the entire anchor 2 is covered with the resin material by molding. However, it is not always necessary to cover the whole of the anchor 2 with the mold, and at least the bolt insertion through which the anchor bolt 9 and the washer 11 come into contact with each other. If only the peripheral edge of the hole 4a is covered with the mold, the intended purpose can be sufficiently achieved. In the above embodiment, the projection 8 is formed in a hemispherical shape so that the mounting seat surface 7 is clamped between the seat plate 9b of the anchor bolt 9 and the washer 11 by point contact. The shape is not necessarily limited to a hemispherical shape, but may be any other shape as long as the contact area of the anchor bolt 9 with the seat plate 9b and the washer 11 becomes small and the swing of the through anchor 1 can be tolerated. You may.

[0014]

[Effects of the Invention] As described above, in the present invention, in the through anchor for the seat belt, the mold cover of the anchor is used.
The cover is on both sides of the bolt insertion hole at the periphery.
To the head and body of the anchor bolt, respectively.
A plurality of protrusions integral with the mold covering portion are formed on each of the mounting seat surfaces at intervals in the circumferential direction.
Between the anchor bolt and the vehicle body
Contact between the metal and the through anchor
Bolt play in the axial direction of the body is eliminated, and
Unusual noise from the car (i.e., metal contact noise due to the swing of the anchor,
Generation of rattling sound) can be effectively prevented.
Moreover, the through anchor is used for both front and back of the mold coating.
Due to the effect of multiple projections on each mounting seat surface,
-The contact surface between the anchor bolt head and the car body
Product and contact resistance (friction resistance) as small as possible
-Smooth sliding of the through anchor around the bolt is possible
Becomes

[0015] In order to obtain such an effect, the conventional technique is used.
Features a soundproof member such as an elastic bush separate from the luch anchor.
Since there is no need to separately install the through anchor
The workability is extremely good, and the number of parts has been reduced.
Parts management easier and overall cost savings
Can greatly contribute.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state in which a seat belt through anchor according to the present invention is attached to a vehicle body side.

FIG. 2 is a front view of the through anchor for a seat belt according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Through anchor 2 Anchor fitting 3 Mold covering part 4 Mounting plate 4a Bolt insertion hole 5 Seat belt 7 Mounting seat surface 8 Projection 9 Anchor bolt 10 Belt insertion hole

Claims (1)

(57) [Scope of request for utility model registration] And 1. A sheet Toberuto (5) is inserted a belt insertion hole (10), and a bolt insertion hole (4a) the anchor bolts attaching the vehicle body (9) is inserted Rua
At least around the bolt insertion hole (4a) of the anchor metal fitting (2).
The edges are covered by a mold cover (3) made of resin material.
Is Rudo coating comprising, through anchor for a seat belt
A is, the mold cover portion (3), the bolt insertion hole (4
a) on the front and back surfaces at the periphery of
A pair of heads and a vehicle body corresponding to the
Mounting seats (7, 7), each of which has a mounting seat (7, 7);
7) A through anchor for a seat belt, wherein a plurality of projections (8,...) Integral with the mold covering portion (3) are formed at intervals in a circumferential direction.