CROSS-REFERENCE TO RELATED APPLICATION

Priority is claimed on Japanese Patent Application No. 2019-082069, filed Apr. 23, 2019, the content of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a vehicle body front structure.

Description of Related Art

In the related art, various technologies in which a front pillar is provided between a front glass and a subsidiary glass of a vehicle and a field of vision of a driver is improved through reduction in size of the front pillar have been proposed.

For example, Japanese Unexamined Patent Application, First Publication No. 2005-125946 discloses a vehicle configuration in which an end portion of a front glass and an end portion of a delta window glass (a subsidiary glass) are adhered to flanges of both sides of a front pillar of the vehicle, respectively, and a garnish configured to cover the front pillar and both of the end portions from an outer side of a vehicle body is attached to the front pillar. According to the technology disclosed in Japanese Unexamined Patent Application, First Publication No. 2005-125946, a cross-sectional area of a front pillar having a hollow cross section can be reduced and a field of vision of a driver can be widened by fixing the garnish to the front pillar.

Japanese Patent No. 4244558 discloses a configuration of a front pillar including an integrated tubular member and a front pillar main body constituted by an outer panel member joined to a side surface of the tubular member on an outer side of the vehicle. According to the technology disclosed in Japanese Patent No. 4244558, since the front pillar main body is constituted by the integrated tubular member having a hollow cross section, the front pillar main body can be formed into an elongated shape while ensuring high rigidity.

SUMMARY OF THE INVENTION

However, in the technologies disclosed in Japanese Unexamined Patent Application, First Publication No. 2005-125946 and Japanese Patent No. 4244558, a hollow cross section is formed in a front pillar to increase the strength of the front pillar, and further reduction in size of the front pillar is limited. Accordingly, there is a problem in narrowing a width of the front pillar seen from a driver to improve a field of vision.

An aspect of the present invention is directed to providing a vehicle body front structure capable of further improving a field of vision of a driver.

(1) A vehicle body front structure according to the present invention includes a front glass; a front pillar having a subsidiary glass provided at further outward in a vehicle width direction of a vehicle body than the front glass, a front pillar upper part provided between a roof and an upper member of the vehicle body and forming a load path of a front collision together with the upper member, and a stud provided in front of the front pillar upper part and configured to support an end portion of the front glass and an end portion of the subsidiary glass; and a garnish configured to cover the stud from an outer side of a passenger compartment.

(2) In the aspect of the above-mentioned (1), an upper end portion of the stud may be attached to an upper section of the front pillar upper part, and a lower end portion of the stud may be attached to an extension section extending upward from the upper member provided below the front pillar upper part.

(3) In the aspect of the above-mentioned (2), at least the lower end portion of the stud may be pivoted with respect to the extension section by a fastening member.

(4) In the aspect of the above-mentioned (2) or (3), a cross rail connected to a lower end of the stud and extending in the vehicle width direction may be disposed on a lower end of the front pillar, and the extension section may bridge between the upper member and the cross rail.

(5) In the aspect of any one of the above-mentioned (1) to (4), the stud may be formed in a V-shaped cross section by a front support section to which the front glass is attached and a side support section disposed further outward in the vehicle width direction than the front support section and to which the subsidiary glass is attached, and at least one of the front support section and the side support section may have a garnish fixing part extending toward the garnish, and the garnish may be attached to the garnish fixing part.

(6) In the aspect of the above-mentioned (5), the garnish fixing part may be formed in an L shape by a joining section fixed to the front support section along the front support section and a connecting section extending from an end portion of the joining section toward the garnish.

(7) In the aspect of the above-mentioned (6), the connecting section may be provided on a bent section disposed between the front support section and the side support section.

(8) In the aspect of any one of the above-mentioned (5) to (7), a width dimension of the front support section and a width dimension of the side support section may be set to be equal to each other.

(9) In the aspect of any one of the above-mentioned (1) to (8), the garnish may include an inner part having an engaging section configured to engage with the stud; an outer part configured to cover the inner part and disposed at the outer side of the passenger compartment; an inner seal section in contact with the front glass; and an outer seal section in contact with the subsidiary glass.

(10) In the aspect of any one of the above-mentioned (1) to (9), an adhesive agent configured to fix the front glass and the subsidiary glass to the stud, and a seal member provided at a side in which the seal member is far from a central section of the stud than the adhesive agent in the vehicle width direction may be provided between the front glass and the subsidiary glass, and the stud.

(11) In the aspect of the above-mentioned (5) to (8), the stud may be formed by overlapping a plurality of plate members in a forward/rearward direction of the vehicle body, and the garnish fixing part may be fixed to the plate member at a front side, and a fixing bracket of an indoor garnish configured to cover at least the front pillar from an inner side of a passenger compartment may be fixed to the plate member at a rear side.

According to the aspect of the above-mentioned (1), since the front pillar has a stud disposed in front of the front pillar upper part and disposed between the front glass and the subsidiary glass, the front glass and the subsidiary glass can be supported by the stud. Here, when an impact load is input from the front of the vehicle body, an impact is transmitted to a roof as an impact load is transmitted to the front pillar upper part that forms a load path of a front collision together with the upper member. According to the configuration, since the stud is provided between the front glass and the subsidiary glass and the front pillar upper part is disposed behind the subsidiary glass, an impact load applied to the stud is minimized. Accordingly, in comparison with the related art in which the impact load is received by the front pillar by disposing the front pillar having the hollow cross section between the front glass and the subsidiary glass, a width of the stud when seen from a driver can be reduced. Accordingly, an area of an obstacle that interrupts a field of vision of a driver can be reduced, and the field of vision of the driver can be widened. In addition, since the garnish covers the stud from the outer side of the passenger compartment, a strength of the front pillar can be increased. Accordingly, the field of vision can be improved while the strength of the front pillar is maintained.

Accordingly, it is possible to provide the vehicle body front structure in which a field of vision of a driver is further improved.

According to the aspect of the above-mentioned (2), the lower end portion of the stud is attached to the extension section extending upward from the upper member. According to the configuration, for example, an impact load input from the front of the vehicle body is transmitted to the front pillar upper part via the upper member. Accordingly, since the impact load transmitted to the stud is minimized, a width of the stud when seen from a driver can be reduced. Accordingly, the field of vision of the driver can be further improved.

According to the aspect of the above-mentioned (3), since the lower end portion of the stud is pivoted with respect to the extension section, the stud and the extension section are rotatable with respect to each other at a fixed point of the lower end portion of the stud. Accordingly, for example, even when the upper member is retracted by the impact load input from the front of the vehicle body, the impact load transmitted to the stud can be minimized as the extension section is rotated rearward with respect to the stud. Accordingly, a width of the stud can be reduced, and the field of vision of the driver can be further improved.

According to the aspect of the above-mentioned (4), since the cross rail is disposed on the lower end of the front pillar, the lower end portion of the front glass can be supported by the cross rail. In addition, since the extension section bridges between the upper member and the cross rail, strength of the stud and the cross rail can be highly maintained by the extension section. Accordingly, the end portions of the front glass and the subsidiary glass can be strongly supported.

According to the aspect of the above-mentioned (5), since the stud is formed in a V-shaped cross section, the stud can be easily manufactured while the strength of the stud is increased and the width is reduced. Since at least one of the front support section and the side support section has the garnish fixing part, the garnish can be easily attached to the stud by attaching the garnish to the garnish fixing part.

According to the aspect of the above-mentioned (6), since the garnish fixing part is fixed to the front support section to which the front glass is attached, the front support section is reinforced by the garnish fixing part. Accordingly, the front support section can secure sufficient support strength with respect to the front glass having a larger weight than that of the subsidiary glass.

According to the aspect of the above-mentioned (7), the connecting section of the garnish fixing part to which the garnish is attached is provided on the bent section disposed between the front support section and the side support section. Accordingly, since the connecting section is provided on the bent section having higher strength than that of the front support section and the side support section, the garnish can be strongly supported.

According to the aspect of the above-mentioned (8), since the width dimension of the front support section and the width dimension of the side support section are set to be equal to each other, the width of the stud can be reduced, and the field of vision of the driver can be improved. In addition, since the width dimension of the entire stud is reduced, a strong separation vortex occurs in a wide range with respect to air from the front of the vehicle body, and wind noise can be reduced.

According to the aspect of the above-mentioned (9), since the garnish includes the inner part, the outer part, the inner seal section and the outer seal section, the inner part is formed of, for example, a resin material or the like having high rigidity to facilitate mounting on the stud, and the outer part is formed of, for example, a resin material or the like on which paint has good application properties, design properties can thus be improved. In addition, the inner seal section and the outer seal section may be formed of a material having good sealability to improve sealability. In this way, the garnish that can be manufactured by a simple method and having good functionality can be manufactured by selecting materials of the parts according to uses thereof.

According to the aspect of the above-mentioned (10), since the adhesive agent and the seal member are provided between the front glass and the subsidiary glass, and the stud, the front glass and the subsidiary glass can be fixed to the stud by an adhesive agent. Since the seal member is provided on a side in which the seal member is far from the central section of the stud than the adhesive agent, intrusion of the adhesive agent into the passenger compartment from the end portion of the stud during assembly can be minimized. In addition, the adhesive agent can be prevented from protruding along the glass surface. Accordingly, it is possible to provide the vehicle body front structure in which manufacturability and design properties are improved.

According to the aspect of the above-mentioned (11), since the stud is formed by overlapping the plurality of plate members in the forward/rearward direction, the strength of the stud can be increased by a simple method. In addition, for example, after the garnish fixing part is fixed to the plate member on the front side and the fixing bracket of the indoor garnish is fixed to the plate member on the rear side, the stud can be formed by overlapping and joining the plate members on the front and rear sides. Accordingly, the stud can be easily manufactured. Accordingly it is possible to provide a vehicle body front structure in which the strength of the stud is increased and manufacturability is improved.

