Vehicle pillar trim

Abstract

To provide a pillar trim of a vehicle which enables improvement of impact resistance with an inexpensive and simple structure.SOLUTION: A pillar trim 21 has: a pillar trim lower 30 which covers a lower area of a pillar skeleton member 20 from a cabin side; a pillar trim upper 31 which is arranged so that its lower end overlaps with an upper end of the pillar trim lower 30 and covers an upper area of the pillar skeleton member 20 from the cabin side; a webbing insertion hole 52 formed between the pillar trim lower 30 and the pillar trim upper 31; a webbing guide 33 which protrudes from an inner surface of the pillar trim lower 30 to the pillar skeleton member 20 side and guides webbing 28 extending from a retractor 27 to the webbing insertion hole 52; and a reinforcement part 55 which is formed integrally with the lower end of the pillar trim upper 31 in the pillar trim lower 30 and reinforces the pillar trim lower 30 near the webbing guide 33.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a pillar trim of a vehicle configured to be divided into a pillar trim upper and a pillar trim lower.

Background Art

[0002] Generally, a plurality of pillars constituting the side portion of a vehicle body skeleton each have a sheet metal pillar skeleton member and a resin pillar trim for decorating the passenger compartment side of the pillar skeleton member. Among these pillars, the center pillar is generally arranged on the side of the seat back of the front seat.

[0003] A retractor for the front seat is fixed to the lower part of the pillar skeleton member of the center pillar. A webbing for restraining the occupant in the front seat extends from this retractor. This webbing extends into the passenger compartment through a webbing insertion hole formed in the pillar trim.

[0004] Generally, the pillar trim is formed by being vertically divided into a pillar trim lower and a pillar trim upper. And the webbing insertion hole is formed at the connection part between the pillar trim lower and the pillar trim upper. Further, for example, as disclosed in Patent Document 1, a webbing guide is provided on the pillar trim lower in the vicinity of the webbing insertion hole. The webbing guide is a protrusion for guiding the webbing extending from the retractor to the webbing opening hole. For this reason, the webbing guide is formed to protrude from the back surface of the pillar trim lower toward the pillar skeleton member side (outer side in the vehicle width direction).

[0005] By the way, in recent years, for the purpose of improving the safety of occupants, side airbag devices incorporated in the seat back of the front seat have become widespread. This side airbag device protects the occupant by deploying an airbag between the seat back and the center pillar during a collision.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Utility Model Publication No. 6-51027 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, the pillar trim described above experiences localized high stress concentration in the area where the webbing guide is formed. These areas with high localized stress concentration are prone to cracking when subjected to impact, such as from airbag deployment. When cracks occur in the pillar trim, the sharp edges of the cracks can damage the airbag, potentially compromising its performance.

[0008] In contrast, adding separate components to reinforce the area around the webbing guide could lead to increased manufacturing costs and structural complexity.

[0009] The present invention aims to provide a vehicle pillar trim that can improve impact resistance with an inexpensive and simple configuration. [Means for solving the problem]

[0010] A pillar trim for a vehicle according to one aspect of the present invention includes: a pillar trim lower that covers the lower region of a pillar frame member constituting the side of the vehicle body frame from the passenger compartment side; a pillar trim upper that is positioned so that its lower end overlaps the upper end of the pillar trim lower and covers the upper region of the pillar frame member from the passenger compartment side; a webbing insertion hole formed between the pillar trim lower and the pillar trim upper; a webbing guide that protrudes from the inner surface of the pillar trim lower toward the pillar frame member and guides the webbing extending from the retractor into the webbing insertion hole; and a webbing guide integrally formed with the lower end of the pillar trim upper inside the pillar trim lower. is formed The aforementioned pillar trim lower top It includes a reinforcing part to reinforce it. The reinforcing portion extends to positions opposite the front and rear ends of the webbing guide, respectively. [Effects of the Invention]

[0011] According to the pillar trim for vehicles of the present invention, impact resistance can be improved with an inexpensive and simple configuration. [Brief explanation of the drawing]

[0012] [Figure 1] Right side view of the vehicle with the side door removed. [Figure 2] Front cross-sectional view showing the cross-section of the center pillar along with the right front seat. [Figure 3] Side view showing the center pillar from the passenger compartment side. [Figure 4] Side view showing the center pillar with the seatbelt removed, as seen from the passenger compartment. [Figure 5] Side view showing an enlarged view of the connection between the pillar trim upper and pillar trim lower. [Figure 6] A perspective view showing an enlarged view of the connection between the pillar trim upper and pillar trim lower. [Figure 7] Side view showing a close-up of the main part of the pillar trim upper. [Figure 8] A perspective view showing a magnified view of the connection between the pillar trim upper and pillar trim lower from the rear side. [Figure 9] A perspective view showing the lower end of the pillar trim upper, magnified from the back side. [Figure 10] A perspective view showing the upper end of the pillar trim lower, magnified from the back side. [Modes for carrying out the invention]

[0013] The embodiments of the present invention will be described below with reference to the drawings. Note that in the drawings used in the following description, the scale of each component is different in order to make each component recognizable on the drawing. Therefore, the present invention is not limited to the quantity of components, the shape of the components, the ratio of the sizes of the components, and the relative positional relationship of each component as shown in these drawings. thing isn't it.

[0014] First, referring to FIG. 1, the schematic configuration of the vehicle 1 to which the pillar trim of the present invention is applied will be described.

[0015] The vehicle 1 shown in FIG. 1 has, as pillars constituting the side portions of the skeleton of the vehicle body 2, a front pillar (A pillar) 5, a center pillar (B pillar) 6, a rear quarter pillar (C pillar) 7, and a rear pillar (D pillar) 8 in order from the front.

[0016] In addition, in the passenger compartment 3 of the vehicle 1, a front seat 10 is arranged between the front pillar 5 and the center pillar 6. The seat back 11 of this front seat 10 is arranged at a position facing the center pillar 6. Further, inside the seat back 11, a side airbag device 12 is stored. The side airbag device 12 is capable of deploying an airbag 12a between the center pillar 6 and the seat back 11 during a collision (see FIG. 2).

[0017] In the passenger compartment 3, a rear seat 13 is arranged between the center pillar 6 and the rear quarter pillar 7. The seat back 14 of this rear seat 13 is arranged at a position facing the rear quarter pillar 7.

[0018] Next, the specific configuration of the center pillar 6 of the vehicle 1 will be described. For example, as shown in FIG. 2, the center pillar 6 has a pillar skeleton member 20 and a pillar trim 21.

[0019] The pillar skeleton member 20, for example, connects the roof side and the floor side of the vehicle body 2 on the side portion of the vehicle body 2. This pillar skeleton member 20 is constituted by a hollow sheet metal member.

[0020] Specifically, the pillar frame member 20 is composed of an outer panel 25 and an inner panel 26. Both the outer panel 25 and the inner panel 26 have flanges (not shown) at their front and rear edges, respectively. The flanges on the front edges of the outer panel 25 and the inner panel 26 are joined to each other by spot welding or the like. Similarly, the flanges on the rear edges of the outer panel 25 and the inner panel 26 are joined to each other by spot welding or the like. It is also possible to interpose reinforcement between the outer panel 25 and the inner panel 26 as appropriate.

[0021] As shown in Figure 2, a retractor 27, which constitutes a seat belt for the front seat, is fixed to the lower part of the pillar frame member 20. The retractor 27 has a winding spring (not shown). The biasing force of this winding spring allows the retractor 27 to wind in and out relative to the webbing 28 for restraining the occupant.

[0022] The pillar trim 21 is a resin member used to decorate the passenger compartment 3 side of the pillar frame member 20. This pillar trim 21 is composed of a pillar trim lower 30 and a pillar trim upper 31.

[0023] The pillar trim lower 30 is a member that covers the lower region of the pillar frame member 20 from the passenger compartment 3 side. This pillar trim lower 30 has a front wall portion 30a, a rear wall portion 30b, and a side wall portion 30c.

[0024] The front wall portion 30a is a wall portion that protrudes diagonally rearward from the front edge of the pillar frame member 20 toward the passenger compartment 3. The rear wall portion 30b is a wall portion that protrudes diagonally forward from the rear edge of the pillar frame member 20 toward the passenger compartment 3. The side wall portion 30c is a wall portion that is connected to the passenger compartment 3 side end of the front wall portion 30a and the passenger compartment 3 side end of the rear wall portion 30b.

[0025] These configurations give the pillar trim lower 30 a shape that protrudes towards the passenger compartment 3. As a result, when the pillar trim lower 30 covers the pillar frame member 20, it forms a gap between the pillar trim lower 30 and the pillar frame member 20. This gap is set up as a guide passage 32 for leading the webbing 28, which is fed out from the retractor 27, to the top of the center pillar 6.

[0026] Furthermore, a webbing guide 33 is integrally formed on the inner surface of the lower pillar trim 30, near the upper part. This webbing guide 33 extends in the longitudinal direction of the vehicle body 2 and has a substantially flat shape that protrudes toward the pillar frame member 20.

[0027] This webbing guide 33 is a component that guides the webbing 28 extending from the retractor 27 toward the webbing insertion hole 52, which will be described later. For this reason, the middle of the webbing 28 can slide against the tip of the webbing guide 33.

[0028] As shown in Figures 8 and 10, ribs 34 are provided at appropriate locations on the inner surface of the pillar trim lower 30 to reinforce it.

[0029] The pillar trim upper 31 is a member that covers the upper region of the pillar frame member 20 from the passenger compartment 3 side. This pillar trim upper 31 has a front wall portion 31a, a rear wall portion 31b, and a side wall portion 31c.

[0030] The front wall portion 31a is a wall portion that protrudes diagonally rearward from the front edge of the pillar frame member 20 toward the passenger compartment 3. The rear wall portion 31b is a wall portion that protrudes diagonally forward from the rear edge of the pillar frame member 20 toward the passenger compartment 3. The side wall portion 31c is a wall portion that is connected to the passenger compartment 3 side end of the front wall portion 31a and the passenger compartment 3 side end of the rear wall portion 31b.

[0031] As a result of these configurations, the pillar trim upper 31 has a shape that protrudes towards the vehicle interior 3. This creates a gap between the pillar trim upper 31 and the pillar frame member 20 when the pillar trim upper 31 covers the pillar frame member 20.

[0032] An adjuster 40 is provided at the top of the pillar trim upper 31. This adjuster 40 has a slider 41 and a through ring 42.

[0033] The slider 41 is attached to the inner panel 26 of the pillar frame member 20 via a slider rail 43. A portion of the slider 41 protrudes into the passenger compartment 3 through a slider opening 45 provided in the pillar trim upper 31.

[0034] The through ring 42 is fixed to the slider 41 on the passenger compartment 3 side. The webbing 28 can be inserted through this through ring 42.

[0035] Furthermore, a portion of the lower end of the pillar trim upper 31 is positioned overlapping the inside of the upper end of the pillar trim lower 30. For this reason, as shown in Figures 4, 5, 7-9, for example, a stepped portion 50 is formed at the lower end of the pillar trim upper 31 to avoid interference with the portion that overlaps with the pillar trim lower 30.

[0036] Furthermore, a groove 51 is formed in a predetermined area on the lower end side of the side wall portion 31c of the pillar trim upper 31, including the stepped portion 50. This groove 51 is a groove that forms a concave shape on the pillar frame member 20 side. This groove 51 creates a space between the pillar trim lower 30 and the pillar trim upper 31. This space is set as a webbing insertion hole 52.

[0037] This webbing insertion hole 52 is an insertion hole for leading the webbing 28, which has been guided by the guide passage 32, into the passenger compartment 3. The webbing 28 that has been led into the passenger compartment 3 can extend towards the front seat 10 via the through ring 42.

[0038] Furthermore, a pair of front and rear reinforcing portions 55 are provided at the lower end of the pillar trim upper 31. These reinforcing portions 55 are projections that reinforce the pillar trim lower 30 in the vicinity of the webbing guide 33. For this reason, each reinforcing portion 55 extends within the pillar trim lower 30 to a position opposite the front and rear ends of the webbing guide 33, respectively.

[0039] Furthermore, each of these reinforcing parts 55 has a plurality of ribs 56 on its back side that protrude toward the pillar frame member 20 side (outward in the vehicle width direction). Here, in order to efficiently improve the rigidity of each reinforcing part 55, it is desirable that each rib 56 has a box shape on the back side of the reinforcing part 55.

[0040] The surface side of each reinforcing portion 55 configured in this way is in contact with the inner surface of the pillar trim lower 30. In addition, the ribs 56 protruding from the back side of each reinforcing portion 55 are in contact with the pillar frame member 20 (inner panel 26). Through these contacts, each reinforcing portion 55 reinforces the pillar trim lower 30 in the vicinity of the webbing guide 33 (before and after the webbing guide 33).

[0041] According to this embodiment, the pillar trim 21 includes a pillar trim lower 30 that covers the lower region of the pillar frame member 20 from the passenger compartment 3 side, a pillar trim upper 31 that is positioned so that its lower end overlaps the upper end of the pillar trim lower 30 and covers the upper region of the pillar frame member 20 from the passenger compartment 3 side, a webbing insertion hole 52 formed between the pillar trim lower 30 and the pillar trim upper 31, a webbing guide 33 that protrudes from the inner surface of the pillar trim lower 30 toward the pillar frame member 20 and guides the webbing 28 extending from the retractor 27 to the webbing insertion hole 52, and a reinforcing portion 55 that is integrally formed with the lower end of the pillar trim upper 31 inside the pillar trim lower 30 and reinforces the pillar trim lower 30 in the vicinity of the webbing guide 33. With these configurations, the impact resistance of the pillar trim 21 can be improved with an inexpensive and simple configuration.

[0042] In other words, the pillar trim 21 of this embodiment is reinforced near the webbing guide 33 of the pillar trim lower 30 by a reinforcing portion 55 integrally formed at the lower end of the pillar trim upper 31. Therefore, it is possible to prevent stress concentration in a part of the pillar trim lower 30 from becoming locally higher than in other parts, without adding any new members. By reinforcing the strength of the pillar trim lower 30 in this way, it is possible to prevent cracks from occurring in the pillar trim lower 30 starting near the webbing guide 33 due to impacts such as when the airbag 12a deploys. By preventing such cracks, it is possible to prevent damage to the airbag and ensure sufficient airbag performance.

[0043] Furthermore, since the reinforcing portion 55 is integrally formed with the lower end of the pillar trim upper 31, an increase in the number of parts can be suppressed, preventing an increase in braking costs and structural complexity.

[0044] In this case, the reinforcing portion 55 extends to positions opposite the front and rear ends of the webbing guide 33, which extends in the longitudinal direction of the vehicle body 2. This effectively suppresses the increase in localized stress concentration in the pillar trim lower 30.

[0045] Furthermore, the reinforcing portion 55 has a rib 56 that protrudes toward the pillar frame member 20. This effectively ensures the strength of the reinforcing portion 55.

[0046] Furthermore, the reinforcing portion 55 is formed into a box shape by the ribs 56. This allows for more effective assurance of the strength of the reinforcing portion 55.

[0047] The inventions described in the above embodiments are not limited to those forms, and various modifications can be made in the implementation stage without departing from the gist of the invention. Furthermore, each of the above embodiments includes inventions at various stages, and various inventions can be extracted by appropriate combinations of the multiple constituent elements disclosed.

[0048] For example, if the problem described can be solved and the effects described can be obtained even if some of the constituent elements shown in each form are removed, then the configuration with the removed constituent elements can be extracted as an invention. [Explanation of Symbols]

[0049] 1 ... Vehicle 2… Vehicle body 3 … Cabin 5. Front pillar (A-pillar) 6… Center pillar (B-pillar) 7. Rear quarter pillar (C-pillar) 8. Rear pillar (D-pillar) 10… Front seats 11… Seat back 12. Side airbag system 12a ... Airbag 13… Rear seats 14… Seat back 20... Pillar frame member 21… Pillar trim 25… Outer panel 26… Inner panel 27… Retractor 28… Webbing 30… Pillar Trim Lower 30a … Front wall part 30b … Rear wall part 30c … Side wall part 31... Pillar Trim Upper 31a... Front wall part 31b … Rear wall part 31c… Side wall part 32 … Passageway 33… Webbing Guide 34… Rib 40 ... Adjuster 41 ... Slider 42… Through ring 43... Slider rail 45 ... Slider opening 50 ... Step section 51… groove 52 ... Webbing insertion hole 55… Reinforcement section 56… Rib

Claims

1. A pillar trim lower that covers the lower region of the pillar frame member that constitutes the side of the vehicle body frame from the passenger compartment side, The pillar trim upper is positioned such that its lower end overlaps the upper end of the pillar trim lower, and covers the upper region of the pillar frame member from the passenger compartment side. A webbing insertion hole formed between the lower pillar trim and the upper pillar trim, A webbing guide protrudes from the inner surface of the pillar trim lower toward the pillar frame member and guides the webbing extending from the retractor into the webbing insertion hole, A reinforcing portion is integrally formed with the lower end of the pillar trim upper within the pillar trim lower, and reinforces the upper part of the pillar trim lower where the webbing guide is formed. Equipped with, The reinforcing portion extends to positions opposite the front and rear ends of the webbing guide, respectively. A pillar trim for a vehicle characterized by the following features.

2. The pillar trim of a vehicle according to claim 1, characterized in that the reinforcing portion has a rib that protrudes from the lower side of the pillar trim towards the pillar skeletal member side.

3. The pillar trim of a vehicle according to claim 2, characterized in that the rib forms a box shape in the reinforcing portion.

4. The upper part of the reinforcing portion is connected by a rib that extends in the longitudinal direction of the vehicle body, and the rib extends to a position opposite the upper end of the webbing guide. The pillar trim of the vehicle according to feature 1.

5. The lower end of the pillar trim upper has a stepped portion to avoid interference with the portion that overlaps with the pillar trim lower, The webbing insertion hole is formed in a predetermined region on the lower end side, including the stepped portion. The pillar trim of the vehicle according to feature 1.

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