JPH0349963Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Field of Industrial Application The present invention relates to a seatbelt device installed in a seat disposed in a vehicle, mainly a vehicle interior.

(2) Conventional technology A reach arm is provided on one side of a seat arranged in a vehicle interior so that it can swing back and forth, and a loop-shaped folded part formed in the webbing pulled out from a retractor can be rotated at the tip of the reach arm. A seatbelt device in which a through tongue attached to the middle part of the webbing can be detachably connected to a buckle provided on the other side of the seat is known, for example, as disclosed in 1983- This is conventionally known as disclosed in Japanese Patent No. 173352.

(3) Problems to be solved by the invention In the above-mentioned conventional devices, the webbing is made of a flexible band material such as knitted fabric or woven fabric to soften the contact with the user's body, and is relatively weak. Therefore, the folded part of the webbing that is inserted through and connected to the reach arm connection hole bends left and right in the thickness direction, and in addition, due to the relatively large frictional resistance at the contact part between the folded part and the reach arm. The folded portion may become twisted and cannot rotate smoothly relative to the reach arm, which may impede the smooth pulling out and retraction of the webbing due to swinging of the reach arm.

An object of the present invention is to solve the above-mentioned problems and provide a seat belt device that can always smoothly and accurately pull out and retract the webbing by swinging the reach arm.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above object, according to the invention, a reach arm is provided on one side of the seat arranged in the vehicle interior so as to be able to swing back and forth. A connecting hole is provided at the tip of the arm to rotatably insert and connect a loop-shaped folded part formed on the webbing pulled out from the retractor, and a through tongue attached to the middle part of the webbing is provided on the other side of the seat. In a seat belt device that can be detachably connected to a buckle, both side surfaces in the width direction are formed into tapered surfaces so that the tip of the folded part is tapered, and the inner surface of the folded part is formed from the webbing. A hard shape-retaining body is provided along the side, and this shape-retaining body includes a bottom plate that is inserted into the connecting hole, and a pair of body parts that are integrally connected to both sides of the bottom plate and face each other with the tip of the reach arm in between. A pair of clamping pieces are integrally formed on both sides of each side plate in the width direction, each abutting against the tapered surface of the folded part and sandwiching the folded part in the width direction. Ru.

(2) Effect According to the above configuration, even if the connecting hole through which the tip of the folded part of the webbing is inserted is relatively small, the tapered folded part can easily rotate within a relatively large angular range within the connecting hole. .

Furthermore, since the folded portion is reinforced by the shape retaining body provided along its inner surface, the folded portion is prevented from bending in the thickness direction, and the folded portion is prevented from bending in the thickness direction when the reach arm swings back and forth. The relative rotation between the webbing and the connecting hole is performed smoothly with little frictional resistance, and as a result, when the reach arm swings, the webbing can be pulled out and retracted smoothly and easily. In addition, even if the reach arm swings back and forth significantly at that time, each pair of clamping pieces spaced apart in the direction of relative rotation between the arm and the webbing folded part will keep the webbing folded part in position with respect to the shape retaining body. Since displacement and twisting are effectively suppressed, the webbing folded portion is accurately held at a predetermined position and posture at each swinging position of the reach arm.

(3) Embodiments Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a seat 4 is disposed on a floor surface 3 within a passenger compartment 2 of an automobile body 1. As shown in FIG. An emergency locking retractor R is provided at the lower part of the interior wall 5 behind the seat 4. Woven fabric from this retractor R,
A webbing W made of a flexible band of knitted fabric is pulled out, and this webbing W extends upward along the interior wall 5 and passes through a guide 6 and a through ring 7 provided on the interior wall 5 to the interior 2. pulled inward,
The reach arm 8 has its free end as detailed below.
is inserted and connected to the tip of the

The reach arm 8 is pivotally supported 11 on a frame 10 provided on the outside of the seat portion 4a of the seat 4, that is, on one side near the opening/closing door 9, so as to be able to swing back and forth.
A drive device 12 such as a motor provided on the frame 10 is connected to the base of the reach arm 8, and the drive device 12 swings the reach arm 8 back and forth within a predetermined angular range. The reach arm 8 may be swung forward by the drive device 12, and may be swung backward by a biasing device such as a return spring.

A through tongue 13 is slidably attached to the middle of the webbing W, and a locking hole 14 is bored at one end of the through tongue 13.

A support arm 15 is provided on the other side of the seat 4 near the center of the vehicle interior 2 and projects diagonally forward. A buckle 16 is fixed to the front end of the support arm 15, and the through tongue 13 is attached to the buckle 16. The locking holes 14 are removably connected.

Next, the connection structure between the free end of the webbing W and the tip of the reach arm 8 will be explained mainly with reference to FIGS. 2 to 4.

A fan-shaped connecting hole 17 is bored at the tip of the reach arm 8, and the free end of the webbing W is bent into a loop shape after passing through the connecting hole 17, and the overlapping part 18 is sewn together. 19 to form a folded part 20, to which the tips of the reach arms 8 are rotatably connected. Second
As shown in the figure, the tip of the folded portion 20 is folded on the inside and has tapered surfaces on both sides in the width direction.
1 and 22, so it has a tapered shape.

A shape retaining body 23 made of hard synthetic resin or the like is provided along the inner surface of the folded portion 20 . This shape support 23
As shown in FIG. 4, the central bottom plate 24 is inserted into the connection hole 17 of the reach arm 8, and the two are integrally erected on both sides of the bottom plate 24 and are opposed to each other across the tip of the reach arm 8. It is composed of a pair of left and right side plates 26 ₁ , 26 ₂ facing each other, and each side plate 26 ₁ ,
The folded portion 2 is attached to both widthwise edges of the base of 26 ₂ .
each pair of clamping pieces 2 that collide with the tapered surfaces 21 and 22 of 0 and clamp the folded part 20 in its width direction;
7 and 27 are integrally formed standing upright at substantially right angles.

Since the folded portion 20 of the webbing W is reinforced by the shape retainer 23 provided along the inner surface thereof, the folded portion 20 is prevented from bending in the thickness direction, and the reach arm 8 As the reach arm 8 swings back and forth, the relative rotation between the folded portion 20 and the connection hole 17 is performed smoothly with little frictional resistance, and as a result, when the reach arm 8 swings back and forth, the pulling out and winding operations of the webbing W are smooth and light. It will be held in In addition, even if the amount of back and forth swing of the reach arm 8 is large at that time, the folded part 20 can be rotated by each pair of clamping pieces 27, 27 spaced apart in the direction of relative rotation between the arm 8 and the folded part 20. Since positional displacement and twisting relative to the shape retaining body 23 are effectively suppressed, the folded portion 20 is accurately held at a predetermined position and posture at each swinging position of the reach arm 8.

When the reach arm 8 is swung to the front of the seat 4, that is, to the use position, as shown by the solid line in FIG.
The folded part 2 of the webbing W is shown in the solid line in Fig. 2.
One tapered surface 21 of 0 is one side 2 of the connecting hole 17
8 to restrict the free end of the webbing W to be on the longitudinal extension of the reach arm 8;
Moreover, when the reach arm 8 swings to the rear of the seat 4, that is, to the storage position, as shown by the chain line in FIG.
Folded part 2 of webbing W as shown in the chain line in Figure 2
The other tapered surface 22 of 0 is the other side surface 2 of the connecting hole 17
9, the free end of the webbing W is restricted to bend at a substantially right angle with respect to the reach arm 8.

Next, the operation of one embodiment of the present invention will be explained.

When the seat belt is not in use, reach arm 8
is stored behind seat 4. In this case, the webbing W is bent at a substantially right angle to the longitudinal direction of the reach arm 8 and is compactly stored at the rear of the seat 4 without getting in the way.

When the occupant currently seated on the seat 4 fastens the seat belt, the reach arm 8 is swung forward when the drive device 12 is actuated. reach arm 8
As the webbing W swings forward, the free end of the webbing W rotates within the connecting hole 17 in the swinging direction of the reach arm 8. When the reach arm 8 is swung to the use position in front of the seat 4, the free end of the webbing W is held on the longitudinal line of the reach arm 8, as shown by the solid line in FIG. It is guided to the hand of the 4th crew member. Here, the occupant pulls the through tongue 13 inserted through the webbing W while sliding it on the webbing W so that its locking hole 14 is locked with the buckle 16.

As described above, the seat belt is worn by the occupant on the seat 4.

When the occupant on the seat 4 removes the through tongue 13 from the buckle 16 to stop using the seat belt, the reach arm 8 is rotated to the storage position behind the seat 4 by the operation of the drive device 12 or the spring force of a return spring (not shown). The free end of the webbing W swings through the connection hole 17 of the reach arm 8 in the swinging direction of the reach arm 8, and is bent and stored as shown by the chain line in FIG.

By the way, a shape retaining body 23 is provided along the folded portion 20 of the free end of the webbing W, and the tip of the reach arm 8 is surrounded by this shape retaining body 23.
Even when the reach arm 8 swings, the folded part 20 of the webbing W does not bend in the thickness direction (in the direction of arrows a and b in FIG. 3), and the folded part 20 and the reach arm 8 have no frictional resistance There is little relative rotation. Therefore, the webbing W can be pulled out and retracted very smoothly, and there is no fear that the webbing W will interfere with other objects in the vehicle compartment 2.

C. Effects of the invention As described above, according to the invention, a reach arm is provided on one side of the seat arranged in the vehicle interior so as to be able to swing back and forth, and a webbing is formed at the tip of the reach arm to be pulled out from a retractor. A seat belt device in which a connecting hole is provided through which a loop-shaped folded part is rotatably inserted and connected, and a through tongue attached to the middle part of the webbing can be detachably connected to a buckle provided on the other side of the seat. , the tip of the folded portion is tapered;
Since both sides in the width direction are formed into tapered surfaces,
Even if the connecting hole through which the tip of the folded portion is inserted is relatively small, the tapered folded portion can be rotated within the connecting hole within a relatively large angular range without difficulty.

Further, a shape-retaining body harder than the webbing is provided on the inner surface of the folded portion, and the shape-retaining body is integrally connected to the bottom plate to be inserted into the connecting hole and to both sides of the bottom plate. Since it is composed of a pair of side plates facing each other with the tip of the reach arm in between, the shape-retaining body can reinforce the folded part of the webbing and prevent the folded part from bending in the thickness direction. At the same time, the relative rotation between the folded part and the connecting hole due to the forward and backward swinging of the reach arm is carried out smoothly with little frictional resistance, so that the webbing can be drawn out and retracted smoothly and easily by the swinging of the reach arm. It can be carried out.

In particular, on both widthwise edges of each of the side plates, a pair of clamping pieces are integrally formed, each of which abuts against the tapered surface of the folded part and clamps the folded part in the width direction. Even if the arm swings back and forth, the pair of clamping pieces spaced apart in the direction of relative rotation between the arm and the webbing folded part can prevent the webbing folded part from shifting or twisting relative to the shape retaining body. Therefore, the webbing folded portion is accurately held at a predetermined position and posture at each swinging position of the reach arm, making it possible to more smoothly pull out and retract the webbing by swinging the reach arm. It can be done easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the seat belt of the present invention, FIG. 1 is an overall perspective view of the seat belt, and FIG.
FIG. 3 is a side view of FIG. 2, and FIG. 4 is a perspective view of the shape retaining body. W...Webbing, 8...Reach arm, 17
... Connection hole, 20 ... Turned part, 23 ... Shape support,
24... Bottom plate, 26 ₁ , 26 ₂ ... Left and right side plates, 27
...Pinch piece.

Claims (1)

[Scope of utility model registration request] A reach arm 8 is provided on one side of the seat 4 arranged in the vehicle interior 2 so as to be able to swing back and forth, and a loop-shaped folded part 20 formed on the webbing W pulled out from the retractor R is provided at the tip of the reach arm 8. A through tongue 1 is provided with a connection hole 17 that is rotatably inserted and connected, and is attached to the middle part of the webbing W.
3 can be removably connected to a buckle 16 provided on the other side of the seat 4. In the seat belt device, both side surfaces in the width direction are formed with tapered surfaces 21 so that the tip of the folded portion 20 is tapered. ,2
A shape retaining body 23 that is harder than the webbing W is provided along the inner surface of the folded portion 20, and this shape retaining body 23 includes a bottom plate 24 that is fitted into the connecting hole 17, It is composed of a pair of side plates 26 ₁ and 26 ₂ that are integrally arranged on both sides of the reach arm 8 and face each other across the tip of the reach arm 8, and on both widthwise edges of each of the side plates 26 ₁ and 26 ₂ . is characterized in that a pair of clamping pieces 27, 27 are integrally formed, each abutting against the tapered surfaces 21, 22 of the folded part 20 and sandwiching the folded part 20 in its width direction. Seat belt device.