JP2017077769A - Seat belt device with heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt device with a heater which achieves cost reduction and maintains aesthetic beauty with a simple structure.SOLUTION: A seat belt 100 with a heater includes: a lap anchor 108 fixed to a vehicle body; belt-like webbing 112 passing through the lap anchor 108 and folded; a sheet-like heater element 120 incorporated into a space between folded parts of the webbing 112; and a tongue plate 106 which has an insertion hole 116, through which the webbing 112 passes, and is movably attached to the webbing 112. A tip 134 of the folded webbing 112 is inserted into a space between an end part 136 of the heater element 120 and the webbing 112. A thickness direction step 138 of the webbing 112 which is formed at an end part 136 of the heater element 120 serves as a tongue stopper 118 which stops the tongue plate 106.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seat belt device with a heater that not only restrains an occupant to a seat but also has a heating function.

  Almost all current passenger cars have a seat belt device in the seat. The seat belt device is a safety device that restrains the occupant to the seat with belt-shaped webbing, and prevents the occupant from jumping forward due to inertial force when a large deceleration is applied to the vehicle due to a sudden stop or collision. Yes. In general, the three-point seat belt device that is widely used is that the tongue plate provided on the webbing is inserted into the buckle next to the seat, so that the region from the shoulder of the occupant to the waist and the region from both sides of the waist It becomes the composition which restrains.

  In addition to the occupant restraint function, types that have various additional functions such as a heater function that warms the occupant have also been developed in current seat belt devices. For example, in the seat belt device with a heater of Patent Document 1, a thin sheet heater configured in a sheet shape is installed on the webbing. Since a sheet-like planar heater has little influence on the wearing feeling of the webbing, a heating function can be efficiently added to the webbing.

JP 2014-166842 A

  In the technique of Patent Document 1, the appearance and wearing feeling are improved by covering the planar heater with a tube-shaped tube cover. However, as one of various product concepts, there is also a demand for a seat belt device with a heater having a simpler configuration with a view to reducing costs.

  In view of such problems, an object of the present invention is to provide a seatbelt device with a heater that can reduce costs and maintain aesthetics with a simple configuration.

  In order to solve the above problems, a representative configuration of a seatbelt device with a heater according to the present invention includes a lap anchor fixed to a vehicle body, a belt-like webbing passed through the lap anchor and folded, and a folded webbing And a tongue plate that has an insertion hole for passing the webbing and is movably attached to the webbing, and the tip of the folded webbing is connected to the end of the heater element. The step in the thickness direction of the webbing inserted between the webbing and formed at the end of the heater element is a tongue stopper that stops the tongue plate.

  According to the above configuration, a heater element is built in the webbing and a tongue stopper can be realized without adding a new member. As described above, the seat belt device with a heater has a simple configuration, and can achieve cost reduction and weight reduction. Further, since the webbing is folded and the heater element is built in between, the thickness of the webbing is increased by the heater element, but the shape does not change in the width direction of the webbing. Further, since the webbing is folded in the longitudinal direction, the texture pattern is aligned in the same direction in the heater element built-in area and the other normal area. Therefore, according to the above configuration, it is possible to maintain the beauty.

  The seat belt device may further include a cover member that wraps a predetermined range from the lap anchor of the webbing to the heater element. As a result, the beauty can be further improved. Further, although a harness for power supply or the like is connected to the heater element, the harness can be covered and protected by a cover member.

  The both ends of the width direction of the area | region which incorporated the heater element among said webbing may be sewn by the overlock stitching. With this configuration, the webbing ends can be suitably stitched together.

  Said webbing has a shoulder belt area | region which covers from a passenger | crew's shoulder to a waist, and a waist belt area | region which covers the both sides to the waist, The heater element may be incorporated in the waist belt area | region. With this configuration, the occupant's body can be warmed more efficiently.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the seatbelt apparatus with a heater which can aim at cost reduction and the maintenance of aesthetics with simple structure.

It is the figure which illustrated the outline of the seatbelt device with a heater concerning the embodiment of the present invention. It is the elements on larger scale of the seatbelt apparatus with a heater of FIG.1 (b). It is an enlarged view of the heater built-in part of Fig.2 (a). It is an enlarged view of webbing of Drawing 1 (b).

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram illustrating an outline of a seat belt device with a heater according to an embodiment of the present invention. FIG. 1A illustrates a mounted state of the seat belt device with a heater (hereinafter referred to as a heater belt 100). The heater belt 100 is a three-point type that is widely used as a general seat belt for a driver's seat, and is connected to a through anchor 102 provided on a wall portion in a passenger compartment and a buckle 104 beside the seat 101. The tang anchor 106 and the buckle 104 are supported at three points of the lap anchor 108 opposite to the seat 101 to restrain the occupant 110.

  The webbing 112 has a belt shape and directly restrains the occupant 110. The webbing 112 is divided into a shoulder belt region 112a that extends from the shoulder to the waist of the occupant 110 and a waist belt region 112b that extends to both sides of the waist with the tongue plate 106 as a boundary. To do.

  FIG. 1B is a diagram illustrating the heater belt 100 in a non-mounted state. The webbing 112 has its root side wound around a retractor 114 and stored. The retractor 114 is installed near the floor below the through anchor 102.

  The tongue plate 106 has an elongated insertion hole 116. The tongue plate 106 is movably attached along the webbing 112 by passing the webbing 112 through the insertion hole 116. The tongue plate 106 is caught by a tongue stopper 118 (described later) provided on the webbing so that the tongue plate 106 is positioned at a height at which the occupant 110 can easily grip the heater plate 110 when the heater belt 110 is not attached.

  FIG. 2 is a partially enlarged view of the seat belt device with a heater in FIG. FIG. 2A illustrates an enlarged region of the webbing 112 mainly from the waist belt region 112 b to the lap anchor 108. The heater belt 100 has a heating function in addition to the original function as a safety device for restraining the occupant 110. In the present embodiment, the heater element 120 is built in the waist belt region 112b (heater built-in portion 122). The waist belt region 112b can contact the lower body of the occupant 110 to warm the occupant 110 body more efficiently.

  FIG. 2B is an exploded view of the heater belt 100 of FIG. The heater element 120 is a long sheet, is thin and flexible, and generates heat by electricity. The heater element 120 is provided with a predetermined control unit 124 and a harness 126 extending from the control unit 124. The control unit 124 receives power supply and electric signals from the vehicle body side via the harnesses 126. The heater element 120 may be a sheet-like or planar structure having exothermic properties. For example, a so-called carbon heater using a resistance heating element or carbon fiber, or an aluminum foil heater may be used.

  The lap anchor 108 is mainly made of metal, and fixes the webbing 112 to the vehicle body. The lap anchor 108 is provided with a predetermined hole 128, and the webbing 112 is connected to the lap anchor 108 through the hole 128.

  The cover member 130 is mainly made of resin, and covers a predetermined range from the lap anchor 108 of the webbing 112 to the heater built-in portion 122. The cover members 130 cover and hide the harnesses 126 to protect the harnesses and improve the aesthetics of the interior of the vehicle.

  In the present embodiment, the heater element 120 is incorporated in the webbing 112 with a configuration that is as simple and cost-effective as possible in consideration of aesthetics and wearing feeling. Specifically, the heater element 120 is built in a region where the webbing 112 is folded without using a new member.

  After passing the webbing 112 through the lap anchor 108, the webbing 112 is folded back to the extent that it covers the entire heater element 120. At this time, the webbing 112 is folded back to the side opposite to the side touching the occupant 110 (see FIG. 1B). With this configuration, the occupant 110 does not touch the steps or seams that occur due to folding, so that the feeling of wearing the webbing 112 can be maintained.

  FIG. 3 is an enlarged view of the heater built-in portion 122 of FIG. Both ends of the heater built-in portion 122 in the width direction are sewn by overlock stitches 132. With this configuration, the ends of the webbing 112 can be firmly stitched together, and the heater element 120 can be suitably incorporated.

  Reference is again made to FIG. In the present embodiment, the tip 134 of the folded webbing 112 is inserted between the end 136 of the heater element 120 and the webbing 112 as illustrated by an arrow. Thereby, as illustrated in FIG. 2A, a step 138 is formed in the thickness direction of the webbing 112. In the present embodiment, the step 138 is used as a tongue stopper 118 (see FIG. 4).

  FIG. 4 is an enlarged view of the webbing 112 of FIG. The tongue stopper 118 is a part that stops the tongue plate 106 at a height that allows the occupant 110 (FIG. 1B) to easily grip the heater belt 110 when the heater belt 110 is not attached (see FIG. 1B). In the present embodiment, the step 138 in the thickness direction of the webbing 112 formed at the end 136 of the heater element 120 is formed to a thickness that allows the insertion hole 116 of the tongue plate 106 to be interfered and caught. A stopper 118 is realized.

  The heater belt 100 incorporates a heater element 120 by folding the webbing 112 without adding any new members, and further, the tongue stopper 118 is also embodied by the folded webbing 112. As described above, the heater belt 100 has a simple configuration and can achieve cost reduction and weight reduction.

  In this embodiment, since the webbing 112 is folded and the heater element 120 is built in between, the heater built-in part 122 of the webbing 112 is thicker than the normal region 140 by the thickness of the heater element 120. There is no change in shape in the width direction of the webbing 112. Further, since the webbing 112 is folded in the longitudinal direction, the texture pattern 142 of the webbing 112 is aligned in the same direction in the heater built-in portion 122 and the normal region 140. Therefore, according to the above configuration, it is possible to maintain the beauty.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented by various methods. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  INDUSTRIAL APPLICABILITY The present invention can be used for a seat belt device with a heater that not only restrains an occupant to a seat but also has a heating function.

DESCRIPTION OF SYMBOLS 100 ... Heater belt, 101 ... Seat, 102 ... Through anchor, 104 ... Buckle, 106 ... Tung plate, 108 ... Lap anchor, 110 ... Passenger, 112 ... Webbing, 112a ... Shoulder belt area, 112b ... Waist belt area, 114 ... Retractor 116 ... Insertion hole 118 118 Tung stopper 120 Heater element 122 Heater built-in part 124 Control part 126 Harnesses 128 Lap anchor hole 130 Cover member 132 Overlock , 134 ... tip of webbing, 136 ... end of heater element, 138 ... step, 140 ... normal area of webbing, 142 ... texture pattern of webbing

Claims (4)

A lap anchor fixed to the car body,
A belt-like webbing passed through the lap anchor and folded;
A sheet-like heater element built in between the folded webbing;
A tongue plate that has an insertion hole for passing the webbing and is movably attached to the webbing;
With
The tip of the folded webbing is inserted between the end of the heater element and the webbing, and the step in the thickness direction of the webbing formed at the end of the heater element stops the tongue plate. A seat belt device with a heater, which is a tongue stopper.   The seat belt device with a heater according to claim 1, further comprising a cover member that wraps a predetermined range from the lap anchor of the webbing to the heater element.   The seat belt device with a heater according to claim 1 or 2, wherein both ends of the webbing in a region in which the heater element is incorporated are sewn by over stitching. The webbing has a shoulder belt region that extends from the shoulder of the occupant to the waist, and a waist belt region that covers the waist over both sides thereof,
The seat belt device with a heater according to any one of claims 1 to 3, wherein the heater element is built in the waist belt region.

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