JP2019127050A - Seat belt device for vehicle - Google Patents

Abstract

To provide a seat belt device for a vehicle, which can sufficiently guarantee safety of a mother and an infant and which can be easily fastened even when engagement with a baby sling is not released.SOLUTION: A seat belt device for a vehicle includes a back belt 110 provided on the back side of a seated occupant 30 and a front belt 120 provided on the front side of the seated occupant 30. The back belt 110 and the front belt 120 are connected via two connection portions between which the seated occupant 30 is interposed. At lease one of the connection portions is engageable/disengageable.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seat belt device for a vehicle.

  In order to ensure the safety of the passenger, a seat belt device for restraining the passenger's body is installed on the seat of the car. Under the Road Traffic Act, passengers are required to wear seat belts (devices).

  As a seat belt device mounted on an automobile, there is a type called a three-point seat belt. The three-point seat belt includes a webbing and a tongue plate attached to the webbing. When the tongue plate is inserted into a buckle disposed on one side of the vehicle seat side portion, the webbing is bridged so as to straddle the chest and the waist of the seat occupant. Thus, the seated person is fixed to the vehicle seat.

  Here, in the overlaid webbing, a portion that extends diagonally upward from one side of the vehicle seat side portion to the other side is referred to as an oblique belt portion, and is substantially from one side of the vehicle seat side portion to the other side. The portion that is bridged horizontally may be referred to as a horizontal belt portion.

JP 2014-210545A JP 2009-262645 A

  By the way, commercial vehicles such as taxis usually do not have baby seats or child seats. Therefore, for example, when a mother (or father, hereinafter referred to as “mother”, etc.) holding an infant on the front side of the chest with a so-called hugging strap is to ride a taxi or the like, it must wear the seat belt while holding the infant. It does not.

  However, when a large impact force is applied to the occupant due to a collision accident or the like, the webbing is stopped extending further, and the infant is sandwiched between the mother or the like and the seat belt (webbing) and pressed. It is formed. Therefore, infants must take taxis etc. while being exposed to great danger.

  Also, in order to avoid such a risk, it is conceivable that only the mother etc. wear the seat belt. However, in this case, the mother or the like must release the engagement of the holding strap. Depending on the structure of the strap, there is a type that is complicatedly engaged with a mother or the like, which takes time and effort before the seat belt is worn.

  In view of the above problems, the present invention can sufficiently ensure the safety of infants as well as mothers, even when a mother or the like holding an infant with a strap is wearing a seat belt. It is an object of the present invention to provide a seat belt device for a vehicle that can be easily installed without releasing the engagement with the holding strap.

A vehicle seat belt device according to the present invention for solving the above-mentioned problems is:
A back side belt which is disposed on the back side of a seat occupant sitting on a vehicle seat and is stretched diagonally or substantially horizontally from one side of the side portion of the car seat to the other side;
A front side belt disposed on the front side of the seat occupant;
With
The back side belt and the front side belt are respectively connected at two places sandwiching the seated person,
At least one of the connection points is characterized in that it can be disengaged.

Further, a seat belt device for a vehicle according to the present invention is:
The back side belt is a diagonal belt portion which is diagonally bridged from one side of the side portion of the vehicle seat to the other side, and a horizontal which is substantially horizontally stretched from one side of the side portion of the vehicle seat to the other side It is preferable that it is a three-point seat belt provided with a belt part.

Furthermore, a seat belt device for a vehicle according to the present invention is:
The front side belt is connected to the back side belt at three points,
It is preferable that the back side belt and the front side belt be connected to satisfy the condition of any one of the following (1) or (2) at the three places.

Condition (1) The back side belt and the front side belt are connected at one place on one end side of the oblique belt portion, one place on one end side of the horizontal belt portion, and one place on the other end side of the oblique belt portion, It is detachably connected at one place on one end side of the oblique belt portion and one place on one end side of the horizontal belt portion, or is detachably connected at one place on the other end side of the oblique belt portion.
Condition (2) The back side belt and the front side belt are connected at one place on one end side of the oblique belt portion, one place on one end side of the horizontal belt portion, and one place on the other end side of the horizontal belt portion. In addition, it is detachably connected at one place on one end side of the oblique belt portion and one place on one end side of the horizontal belt portion, or is detachably connected at one place on the other end side of the horizontal belt portion. .

  According to the present invention, since the back side and front side belts that are connected at two positions sandwiching the seated person and at least one of which can be engaged and disengaged are provided, for example, the infant is held by a strap. Even in this case, the seat belt can be worn by a seated person (such as a mother) without excessive trouble. In addition, according to the present invention, since the structure is provided, it is possible to avoid a state where the infant is sandwiched between the seated person (mother or the like) and the webbing (belt). It can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view of the seat belt apparatus for vehicles which concerns on this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be carried out in many different modes, and is not construed as being limited to the description of the embodiments shown below.

  FIG. 1 is an overall perspective view of a vehicle seat belt device 10 according to an embodiment of the present invention. As shown in FIG. 1, the vehicle seat belt device 10 is mounted on a vehicle seat 20. Here, the vehicle seat belt device 10 includes a back side belt 110 (belt indicated by a broken line in FIG. 1), a front side belt 120 (belt indicated by a solid line in FIG. 1), a back side belt 110 and a front side. A connector 130 or the like for connecting the belt 120 is provided.

  As shown in FIG. 1, the vehicle seat belt device 10 may further include a retractor 140 and a shoulder anchor 150 that support the back belt 110, and includes an anchor 160, a tongue plate (not shown), And a buckle (not shown).

  The back side belt 110 according to the present embodiment is a so-called three-point seat belt. One end of the back side belt 110 is attached to the retractor 140 disposed at a position near the side portion of the vehicle seat 20, and the other end of the back side belt 110 is disposed on the seat 22 of the vehicle seat 20 Attached to the anchor 160.

  In this state, the back belt 110 is stretched so as to be disposed in the front region of the vehicle seat 20 in a form supported by the shoulder anchor 150 and the buckle. At this time, the back belt 110 is engaged with the buckle via the tongue plate.

  Thereby, the back side belt 110 is mounted on the vehicle seat 20 in a state where the delivery length can be adjusted by the retractor 140. Further, an oblique belt portion 111 that is hung from the shoulder anchor 150 to the buckle and obliquely spans the front region of the vehicle seat 20, and a horizontal belt that is hung from the buckle to the anchor 160 and spans substantially horizontally to the front region of the vehicle seat 20. Part 112 is formed.

  As shown in FIG. 1, the back side belt 110 is disposed on the back side of a seated person 30 seated on the vehicle seat 20 (e.g., a mother who holds the baby 40 using a hug or the like). The That is, the oblique belt portion 111 of the back side belt 110 is sandwiched between the backrest 21 of the vehicle seat 20 and the back of the seated person 30, and the horizontal belt portion 112 of the back side belt 110 is the vehicle seat. It will be in a state of being sandwiched between the 20 seat portions 112 and the waist portion (buttock) of the seated person 30.

  Next, the front side belt 120 is connected to the above-mentioned back side belt 110 and disposed on the front side of the seat occupant 30. The seat belt 30 is restrained by the vehicle seat 20 even when a situation in which a strong impact occurs due to a rear-end collision or the like is caused by the front belt 120 arranged in this way. When the seated person 30 is a mother who holds an infant, it is assumed that the front belt 120 is disposed between the mother and the infant.

  Although the front side belt 120 in the present embodiment is arranged on the front side of each of the oblique belt portion 111 and the horizontal belt portion 112 of the back side belt 110, the arrangement of the front side belt 120 is limited to this. Is not to be done. That is, the front belt 120 may be configured only on the front side of the oblique belt portion 111, or may be configured only on the front side of the horizontal belt portion 112.

  However, in order to restrain the seated person 30 on the vehicle seat 20, the front side belt 120 needs to be arranged to straddle the front area of the seated person 30. For example, the front side belt 120 may be arranged so as to straddle the torso of the seated person 30 in a diagonal direction when viewed from the front, along the oblique belt part 111, or along the horizontal belt part 112, with the waist of the seated person 30 facing the front It may be arranged to straddle in the visual horizontal direction. Of course, as shown in FIG. 1, the front side belt 120 is arranged so as to straddle the torso and waist of the seated person 30 along both the oblique belt part 111 and the horizontal belt 112 with the seated person 30 in between. As a result, the seated person 30 can be restrained to the vehicle seat 20 more firmly.

  The front side belt 120 in the present embodiment is configured by only one belt. As shown in FIG. 1, the front belt 120 is folded back at the connector 130b in use. Thus, the front belt 120 includes the portion 121 along the oblique belt portion 111 and the portion 122 along the horizontal belt portion 112.

  However, the configuration of the front belt 120 is not limited to this. For example, the front side belt 120 includes two members of a belt member corresponding to the portion 121 along the oblique belt portion 111 and another belt member corresponding to the portion 122 along the horizontal belt portion 112, and these are optionally connected The connection may be made by means. Of course, three or more belt members may be connected. However, as in the front side belt 120 according to the present embodiment, an aspect configured with only one belt is preferable in that the manufacturing cost can be reduced and it can be easily manufactured.

  In the present embodiment, the rear belt 110 and the front belt 120 are connected via three connectors 130 (130a, 130b, 130c). As shown in FIG. 1, the connector 130 a is disposed in the vicinity of one shoulder side of the seat occupant 30 (also referred to as one end side of the oblique belt portion 111). The connector 130 b is disposed in the vicinity of the other side of the waist of the seated person 30 (also referred to as the other end of the horizontal belt portion 112). Furthermore, the connector 130c is disposed in the vicinity of one waist (also referred to as the other end of the oblique belt portion 111) of the seated person 30.

  The connector 130 is not particularly limited as long as it can connect the back side belt 110 and the front side belt 120. For example, a pair of hook-and-loop fasteners provided on both the back side belt 110 side and the front side belt 120 side, a ring-shaped snap tool that is attached to the front side belt 120 side and allows the back side belt 110 to pass through, or A male connector attached to the front belt 120 side and a female connector attached to the back belt 110, and the male connector is inserted into the female connector so that both can be connected detachably. It can be illustrated. In addition, without providing such a member separately, the back side belt 110 and the front side belt 120 may be stitched to connect them.

  As described above, the vehicle seat belt device 10 according to the present embodiment includes the three connecting devices 130. However, the number of connectors 130 is not limited to this. For example, when the front side belt 120 is disposed along only either the oblique belt portion 111 or the horizontal belt 112 of the back side belt 110, the number of connectors 130 may be two. However, in this case, since the seat occupant 30 needs to be restrained to the vehicle seat 20 by the front belt 120, the two connectors 130 are arranged to sandwich the seat occupant 30 in the front view of the vehicle seat 20. Ru. As an example of the positional relationship between the two connecting tools 130, one is arranged on the right side of the seated person 30 as viewed from the front and the other is arranged on the left side of the seated person 30 as viewed from the front.

  At least one of the connectors 130 connects the back side belt 110 and the front side belt 120 in a releasable state (hereinafter, the releasable connection between the both belts in a releasable state) On the other hand, a connector for fixing and connecting both belts is called a "non-removable connector". All the connectors 130 may be detachable, or a combination of detachable and non-detachable connectors may be used.

  When all the connectors 130 are detachable, the front belt 120 can be removed from the back belt 110. In this case, the seat occupant 30 carries the front belt 120 separately and carries it alone, and attaches it to the back belt 110 (general three-point seat belt etc.) provided in advance on the vehicle seat 20 when riding. Thus, the vehicle may be restrained by the vehicle seat 20.

  By doing so, it is possible to use a mode in which the front side belt 120 is not always installed on the vehicle, and for the general seat occupant 30, while using the back side belt 110 as a restraint belt, sitting on board with the baby With regard to the occupant 30, the front belt 120 can be connected to the back belt 110, and the front belt 120 can be used as a restraint belt.

In the case where the removable and non-removable connectors 130 are mixed, for example, the following variations can be considered.
Variation 1: The connector 130a and the connector 130c are removable connectors, while the connector 130b is a non-removable connector (that is, the connector 130 disposed on the front right side of the seated person 30 in FIG. 1). Is detachable, and the connector 130 disposed on the front left side of the seat occupant 30 is non-detachable).
Variation 2: While the connector 130 b is a detachable connector, the connectors 130 a and 130 c are non-detachable connectors (that is, the connector 130 disposed on the front left side of the seated person 30 in FIG. And the connector 130 disposed on the front right side of the seat occupant 30 is non-removable.

  In particular, by adopting the variation 2, after the seated person 30 is seated on the vehicle seat 20, the portion 121 along the oblique belt portion 111 of the front side belt 120 and the portion 122 along the horizontal belt portion 112 separately. It becomes possible to connect.

  By connecting the back side belt 110 and the front side belt 120 in this manner, even if the seated person 30 is holding the infant 40 using a strap, the belt portions 121 and 122 are connected to the seated person 30. It is possible to pass separately between the baby and the infant 40, and there is no need for the seat occupant 30 to release the engagement of the holding strap in order to attach the seat belt. Therefore, even a seated person in the above state can wear the seat belt without excessive trouble. In addition, having such an effect is the same also when making all the connectors 130 mentioned above into a detachable type.

  Thus, according to the seat belt device 10 according to the present invention, the front belt 120 restrains the seat occupant 30 (mother or the like) to the vehicle seat 20, and separately from the tie strap that engages with the seat occupant 30. The infant 40 can be held. Thus, unlike the case of a seat belt that is generally used, even if a large impact is applied to the seated person due to a collision accident or the like, the situation where the infant 40 is caught between the seated person 30 and the belt can be avoided. Of course, the safety of the infant 40 can be sufficiently secured.

  In the above description, the present embodiment has been described on the assumption that the front belt 120 is disposed between the seated person 30 and the baby 40, but the position of the front belt 120 is not limited to this. . For example, when the infants 40 face each other and are held by the seated person 30, the front belt 120 may be disposed to straddle the back side of the infants 40.

  That is, the “front side” of the seated person 30 on which the front side belt 120 is disposed is not only the vicinity of the seated person 30 (that is, the area between the seated person 30 and the baby 40) As seen from the front side of the infant 40.

  In the case of a generally used seat belt, the retractor is provided with a mechanism for stopping the delivery when an impact is applied to the vehicle and the delivery speed of the seat belt exceeds a predetermined value. Therefore, when the seat belt is mounted so as to straddle the infant 40 held by the seated person 30, when the seat belt is stopped by the retractor, the infant 40 is placed between the seated person 30 and the seat belt. It gets caught and pressed.

  On the other hand, according to the vehicle seat belt device 10 according to the present embodiment, the front belt 120 disposed so as to straddle the seated person 30 or the infant 40 is a delivery stop mechanism such as the above-described general seat belt. Not affected by Therefore, even if the vehicle receives an impact and the seat occupant 30 (the baby 40) receives a force to be pushed forward, the space formed by the front belt 120 and the back belt 110 hardly changes. Therefore, a situation where the seat occupant 30 and the baby 40 are pinched and compressed by the seat belt can not occur.

  Further, as described above, the delivery (extension) of the back side belt 110 in the present embodiment is controlled by the retractor 140. Therefore, when an impact is applied to the vehicle and the seat occupant 30 is pushed forward, the delivery of the rear belt 110 is stopped. Thus, further pushing of the seat occupant 30 and the baby 40 is limited, and it is possible to prevent the vehicle seat 20 from jumping forward.

  Since the vehicle seat belt 10 according to the present embodiment has the above-described structure, the safety of the seat occupant 30 and the baby 40 is sufficiently ensured even if a large impact is applied to the seat occupant 30 in a collision accident or the like. be able to.

10 Vehicle seat belt device 110 Rear side belt 111 Diagonal belt part 112 of the rear side belt Horizontal belt part 120 of the rear side belt 120 Front side belt 121 Part along the oblique belt part 111 Part 130 along the horizontal belt part 112 Connecting tool 20 Vehicle seat 21 Backrest 22 Seat

Claims (3)

A back side belt that can be attached to a vehicle seat and disposed on the back side of a seat occupant seated on the vehicle seat;
A front side belt disposed on the front side of the seat occupant;
With
The back side belt is stretched from one side of the side portion of the vehicle seat to the other side.
The front side belt is arranged to straddle the torso or waist of the seat occupant.
The back side belt and the front side belt are connected at at least two places sandwiching the seated person,
At least one of the connection points is detachable.
Vehicle seat belt device. The back side belt is
A diagonal belt portion that is diagonally bridged from one side of the side portion of the vehicle seat to the other side;
A horizontal belt portion extending substantially horizontally from one side to the other side of the vehicle seat;
With
The front belt is disposed along the oblique belt portion and the horizontal belt portion of the back belt.
The vehicle seat belt device according to claim 1. The front belt is connected to the back belt at three locations,
The back side belt and the front side belt are connected to satisfy the condition of any one of the following (1) or (2) at the three places:
The vehicle seat belt device according to claim 2.
Condition (1) The back side belt and the front side belt are connected at one place on one end side of the oblique belt portion, one place on one end side of the horizontal belt portion, and one place on the other end side of the oblique belt portion, It is detachably connected at one place on one end side of the oblique belt portion and one place on one end side of the horizontal belt portion, or is detachably connected at one place on the other end side of the oblique belt portion.
Condition (2) The back side belt and the front side belt are connected at one place on one end side of the oblique belt portion, one place on one end side of the horizontal belt portion, and one place on the other end side of the horizontal belt portion. In addition, it is detachably connected at one place on one end side of the oblique belt portion and one place on one end side of the horizontal belt portion, or is detachably connected at one place on the other end side of the horizontal belt portion. .

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