JP4885583B2 - Automobile beltline structure - Google Patents

Description

  The present invention relates to a belt line portion structure of an automobile in which an input at the time of a vehicle collision is transmitted from a pillar member to a belt line rein hose of a door.

In an automobile, a structure is adopted in which an input at the time of a frontal collision is transmitted from the front pillar to the rear of the vehicle body via a belt line rein hose of the front door, thereby avoiding an influence on the passenger compartment. For example, in patent document 1, the front-end | tip part of the beltline rein hose formed in the cylinder shape is made into a taper shape, and this front-end | tip part is arrange | positioned so as to oppose a front pillar from between the front side base part of a sash frame, and a door inner panel. In addition, when the vehicle collides, the tip of the beltline rein hose is bitten into the pillar member, and the impact force is transmitted to the rear of the vehicle body via the beltline reinhose.
JP 2004-114805 A

  By the way, in the above conventional belt line part structure, the tip of the belt line rein hose has a tapered shape, and although it can bite into the front pillar reliably due to its structure, transmission of impact force to the rear of the vehicle is insufficient. There is a risk of becoming.

  The present invention has been made in view of the above-described conventional situation, and an object of the present invention is to provide an automobile beltline structure that can efficiently transmit an impact force to the rear of the vehicle body while reliably biting into the pillar member. Yes.

According to the present invention, the front and rear bases of a window frame sash frame are inserted into a door body arranged so as to overlap the pillar member when viewed in the longitudinal direction of the vehicle, and a belt line rein hose is belt-lined in the door body. The belt line rein hose is arranged on the outer side in the vehicle width direction in the structure of the belt line part of the automobile, which is arranged along the line and transmits the input at the time of the vehicle collision between the pillar member and the belt line rein hose. The door body has a substantially hat-like cross-sectional shape and extends over the entire length of the door body in the vehicle front-rear direction. The door body is coupled to the inner wall portion of the door body, and the end surface of the beltline reinhose is connected to the sash. A predetermined gap is provided at the base of the frame so as to face each other, and at the end of the beltline reinhose, the base of the sash frame and the inner wall of the door body Located in, and provide a piercing portion extending so as to face the pillar members, the piercing portion, and the belt line reinforcements are formed separately, and strength than the plate member constituting the door body and the pillar member , Which is composed of a highly rigid member, and when the vehicle collides, the pierced portion bites into the pillar member, and the end surface of the beltline rein hose is in contact with the sash frame with the gap being in contact with the sash frame. Is transmitted to the rear of the vehicle.

  According to the beltline portion structure of the first aspect of the invention, the beltline rein hose has a substantially hat-like cross section and extends over the entire length of the door body in the vehicle front-rear direction, and the end surface of the beltline reinhose is attached to the sash frame. Since the pierced part that extends so as to face the pillar member is provided on the belt line rein hose, the pierced part bites into the pillar member at the time of a vehicle collision, and substantially simultaneously with this. The sash frame comes into contact with the end surface of the belt line rein hose via the pillar member. As a result, the input at the time of the collision can be efficiently transmitted from the pillar member to the rear of the vehicle body via the belt line rein hose.

In the present invention , since the piercing portion is a separate member and is a member having higher strength and rigidity than the door main body and the pillar member, the piercing portion may have a minimum size necessary for biting into the pillar member. And an increase in weight and cost can be avoided.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 to FIG. 5 are diagrams for explaining a belt line portion structure of an automobile according to an embodiment of the present invention, FIG. 1 is a side view of a front door, FIG. 2 is a side view of a front portion of the front door, 3 is a cross-sectional plan view of the door body (cross-sectional view taken along line III-III in FIG. 2), FIG. 4 is a cross-sectional plan view of the hinge portion of the door body (cross-sectional view taken along line IV-IV in FIG. 2), and FIG. FIG. 2 is a cross-sectional front view (cross-sectional view taken along the line VV in FIG. 1) of the belt line rein hose. 1 and 2 are views seen from the passenger compartment side with the door inner panel removed.

  In the figure, reference numeral 1 denotes a front door of an automobile. The front door 1 is disposed so as to overlap a front pillar 2 that forms a door opening front edge and a center pillar (not shown) that forms a door opening rear edge when viewed in the vehicle front-rear direction.

  The front edge of the front door 1 is pivotally supported by the front pillar 2 through a pair of upper and lower door hinge members 3 and 3 so as to be opened and closed in the vehicle width direction, and the rear edge of the front door 1 is The center pillar is supported so as to be locked via a door lock mechanism (not shown).

  The front pillar 2 is arranged between a pillar outer 4 having a hat-like cross section and a pillar inner 5, and a pillar outer rein hose 6 having a hat-like cross section formed so as to substantially follow the pillar outer 4. 5 has a structure in which the pillar inner hose 7 is arranged inside 5 and the front and rear flange portions 2a and 2a are joined together by spot welding, thereby forming a square-cylindrical closed cross section. Yes.

  The front door 1 includes a door body 10 formed by joining outer peripheral edges of a door outer panel 10a and a door inner panel 10b, and front and rear base portions 11a and 11b in an upper end opening 10d of the door body 10. A window frame sash frame 11 that is inserted and disposed, and a door glass 12 that opens and closes a window opening 11c of the sash frame 11 are provided. In the door body 10, a rein hose 13 for enhancing the rigidity of the door outer panel 10a and an impact beam 14 for suppressing door deformation at the time of a side collision are arranged substantially in the front-rear direction.

  A door outer rear hose 16 is disposed inside the door outer panel 10a, and a door inner rear hose 17 is disposed inside the door inner panel 10b.

  The door inner panel 10b has a bent front vertical wall portion 10c that overlaps the rear vertical wall 4a of the pillar outer 4 and the rear vertical wall 6a of the pillar outer hose 6 with a predetermined gap when viewed in the vehicle longitudinal direction. Is formed.

  The front base portion 11a of the sash frame 11 is joined to the inner surface of the door of the front vertical wall portion 10c. A weather strip 15 is mounted on the front vertical wall portion 10c to seal a gap with the pillar outer 4 when the door is closed.

  A belt line rein hose 20 is arranged along the belt line L in the door body 10. As shown in FIG. 5, the belt line rein hose 20 has a U-shaped projecting portion 20 a at its upper and lower edges, and a lower flange portion 20 b. 20c is formed in a cross-sectional hat shape that is convex outward in the vehicle width direction, and has substantially the same cross-sectional shape over substantially the entire length of the door body 10 in the vehicle front-rear direction.

  The upper and lower flange portions 20b and 20c of the beltline reinhose 20 are joined to the door inner panel 10b and the door inner reinhose 17 by spot welding. As a result, the door body 10 is formed with a rectangular cross-section A that extends in the vehicle longitudinal direction.

  The front end surface 20d of the beltline reinhose 20 is opposed to the rear end surface of the front base portion 11a of the sash frame 11 with a predetermined gap s.

  A piercing member 21 is disposed at the front edge of the beltline reinhose 20. The piercing member 21 is formed separately from the beltline reinhose 20 and has a chip shape having a square front part 21a and a substantially semicircular rear part 21b protruding forward.

  The piercing member 21 is composed of a member having higher strength and rigidity than the panel member constituting the door body 10 and the front pillar 2. Specifically, the plate thickness and hardness are higher than any of the above panel members.

  An overhanging portion 10f extending so as to be close to the front pillar 2 is bulged at the inner corner portion facing the piercing member 21 of the front vertical wall portion 10c of the door inner panel 10b.

  The piercing member 21 extends forward from the front edge of the beltline reinhose 20 so as to be positioned between the front base 11a of the sash frame 11 and the door inner panel 10b. And the front-end | tip of the front part 21a of the piercing member 21 is inserted in the said overhang | projection part 10f, and is facing the rear vertical walls 4a and 6a of the said front pillar 2. As shown in FIG. When viewed in the vehicle width direction, the front portion 21a and the front base portion 11a of the sash frame 11 overlap each other so as to substantially coincide with each other.

  The piercing member 21 is coupled to the beltline reinhose 20 through a reinforcing member 22 made of sheet metal. The reinforcing member 22 includes a belt line coupling portion 22a extending in the front-rear direction along the front side portion of the belt line reinhose 20, and a downward direction along the front base portion 11a of the sash frame 11 from the front end portion of the belt line joint portion 22a. It has a generally inverted L shape having an extended sash joint 22b and a hinge reinforcement 22c extending from the lower end of the sash joint 22b so as to approach the upper hinge mounting seat 3a.

  The beltline coupling portion 22a is coupled to the door inner panel 10b together with the front side portion of the beltline reinhose 20 by welding.

  Further, the rear portion 21b of the piercing member 21 is joined by welding so as to overlap the front end portion of the beltline reinhose 20 inside the beltline joint portion 22a in the vehicle width direction.

  Further, the sash joint 22b is joined to the front base 11a by welding over the entire length in the vertical direction, and the hinge reinforcing part 22c is joined to the vicinity of the hinge mounting seat 3a of the door inner panel 10b by welding. Yes.

  According to the present embodiment, the beltline reinhose 20 disposed in the door body 10 extends substantially over the entire length of the door body 10 in the vehicle front-rear direction, and has a substantially cross-sectional hat shape that protrudes outward. The front end face 20d of the beltline reinhose 20 is opposed to the front base part 11a of the sash frame 11 with a predetermined gap s so that the front edge of the beltline reinhose 20 faces the front pillar 2. Since the extending piercing member 21 is provided, the piercing member 21 bites into the rear vertical walls 4a and 6a of the front pillar 2 at the time of a vehicle collision, and at the same time, a belt is attached to the front base 11a of the sash frame 11 via the front pillar 2. The front end face 20d of the line rein hose 20 comes into contact with the gap s. As a result, the input at the time of the collision can be efficiently transmitted from the front pillar 2 to the rear of the vehicle body via the beltline reinhose 20.

  In the present embodiment, the piercing member 21 is a separate member from the beltline reinhose 20 and is configured by a member having higher strength and rigidity than the panel members of the door body 10 and the front pillar 2. The minimum required size for biting into 2 is sufficient, and an increase in weight and cost due to the provision of the piercing member 21 can be avoided. Further, since the piercing member 21 is a separate body, assembly by welding can be easily performed.

  In this embodiment, since the front base portion 11a of the sash frame 11 is supported by the piercing member 21 via the reinforcing member 22 of the beltline reinhose 20, the sash against the stress due to the sucking action from the door body 10 during traveling is supported. The attachment strength of the frame 11 can be increased.

  In the above embodiment, the case where the belt line portion structure is applied to the front portion of the belt line rein hose 20 of the front door 1 facing the front pillar 2 has been described as an example. However, the belt line portion structure of the present invention is as follows. It can also be applied to the rear part of the front door facing the center pillar, and further to the front and rear parts of the belt line rein hose of the rear door. Also in this case, substantially the same effect as the above embodiment can be obtained.

It is a side view of a front door for explaining a belt line part structure of a car by one embodiment of the present invention. It is a side view of the front side part of the door body of the front door. FIG. 3 is a cross-sectional plan view (cross-sectional view taken along line III-III in FIG. 2) of the belt line rein hose of the door body. FIG. 4 is a cross-sectional plan view (a cross-sectional view taken along line IV-IV in FIG. 2) of the hinge portion of the door body. It is a cross-sectional front view (VV line cross-sectional view of FIG. 1) of the belt line rein hose of the door body.

Explanation of symbols

1 Front door 2 Front pillar (pillar member)
DESCRIPTION OF SYMBOLS 10 Door main body 11 Sash frame 11a Front side base part 11b Rear side base part 20 Belt line rein hose 20d Front end surface 21 Piercing member L Belt line s Gap

Claims (1)

Insert the front and rear bases of the sash frame for the window frame into the door body that is placed so as to overlap the pillar member when viewed in the longitudinal direction of the vehicle, so that the belt line rein hose extends along the belt line in the door body. In the beltline part structure of an automobile arranged and configured to transmit the input at the time of a vehicle collision between the pillar member and the beltline reinhose,
The beltline reinhose has a substantially hat-like cross section that protrudes outward in the vehicle width direction and extends substantially the entire length of the door body in the vehicle front-rear direction, and is coupled to an inner wall portion in the door body. The end face of the beltline reinhose is opposed to the base of the sash frame with a predetermined gap,
Provided at the end of the beltline reinhose is a piercing portion located between the base portion of the sash frame and the inner wall portion of the door body and extending to face the pillar member,
The piercing portion is formed of a member that is formed separately from the belt line rein hose and has higher strength and rigidity than the plate member that constitutes the door body and the pillar member,
In the event of a vehicle collision, the pierced portion bites into the pillar member, and the end surface of the beltline rein hose contacts the sash frame with the gap being closed, thereby transmitting the input at the time of the collision to the rear of the vehicle body. The beltline part structure of the car.

Images