CN117751051A

CN117751051A - Panel frame structure

Info

Publication number: CN117751051A
Application number: CN202280047913.1A
Authority: CN
Inventors: 佐藤竹志; 米原秀刚; 新村贵弘; 石原淳也
Original assignee: TS Tech Co Ltd
Current assignee: TS Tech Co Ltd
Priority date: 2021-07-16
Filing date: 2022-07-19
Publication date: 2024-03-22

Abstract

In order to achieve an improvement in the strength of a panel frame structure (2100), a panel frame structure (2100) is provided, which comprises a panel frame (2020), an upper frame (2040) joined along the upper end of the panel frame (2020), a side frame (2070) joined along the side end of the panel frame (2020), and a mounting bracket (2080) for a locking device (2110), wherein the mounting bracket (2080) has a portion overlapping the upper frame (2040) when viewed in the front-rear direction.

Description

Panel frame structure

Technical Field

The present invention relates to a panel frame (panel frame) structure.

Background

The following examples are disclosed in Japanese patent application laid-open No. 2015-163506: a mounting bracket (breet) for holding a lock device for fixing a seat back (seat back) of a vehicle seat in an upright state is provided to a side frame (side frame) of a seat frame (seat frame).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2015-163506

Disclosure of Invention

Problems to be solved by the invention

However, the conventional panel frame structure has room for improvement in strength of the structure.

The present invention has been made in view of the above-described circumstances, and an object thereof is to improve the strength of a panel frame structure.

Technical means for solving the problems

In order to solve the above problems, the invention described in claim 1 is a panel frame structure comprising:

a panel frame;

an upper frame coupled along an upper end portion of the panel frame;

a side frame joined along a side end of the panel frame; and

a mounting bracket for a locking device, said panel frame structure characterized in that,

the mounting bracket has a portion that coincides with the upper frame when viewed in the front-rear direction.

The invention according to claim 2 is the panel frame structure according to claim 1, characterized in that,

the mounting bracket is in a state of covering at least a part of the upper frame.

The invention according to claim 3 is the panel frame structure according to claim 1 or 2, characterized in that,

the side frames, the mounting bracket, and the upper frame have portions that overlap when viewed from the front-rear direction.

The invention according to claim 4 is the panel frame structure according to any one of claims 1 to 3, characterized in that,

A clearance space is provided between the mounting bracket and the upper frame, in which a fixing member for mounting the locking device is disposed.

The invention according to claim 5 is the panel frame structure according to claim 4, characterized in that,

the fixing member is engaged with a side wall portion forming the gap space.

The invention according to claim 6 is the panel frame structure according to claim 4 or 5, characterized in that,

the mounting bracket has the clearance space inside a portion protruding in the front-rear direction.

The invention according to claim 7 is the panel frame structure according to any one of claims 1 to 6, characterized in that,

the mounting bracket is coupled to at least one of the upper frame or the side frame and the panel frame.

The invention according to claim 8 is the panel frame structure according to any one of claims 1 to 7, characterized in that,

a clearance space for storing the locking device is arranged between the mounting bracket and the upper frame.

The invention of claim 9 is the panel frame structure according to any one of claims 1 to 8, characterized by comprising:

A handrail support supporting a handrail; and

corner brackets joined to corners of the panel frame,

the armrest support has a portion that coincides with the side frame or the corner support when viewed in the front-rear direction.

The invention according to claim 10 is the panel frame structure according to claim 9, characterized in that,

the armrest support is coupled to the side frame or the corner support.

The invention according to claim 11 is the panel frame structure according to claim 9, characterized in that,

the armrest support is not engaged with either of the side frames or the corner support.

The invention according to claim 12 is the panel frame structure according to any one of claims 9 to 11, characterized in that,

the armrest support is shaped to avoid the side frames or the corner supports in the front-rear direction.

The invention according to claim 13 is the panel frame structure according to any one of claims 1 to 12, characterized in that,

the upper frame is in an opening cross-sectional shape,

the panel frame has a reinforcing portion including irregularities at a position inside an opening portion of the upper frame, the opening portion being an opening cross section of the upper frame.

The invention according to claim 14 is the panel frame structure according to any one of claims 1 to 13, characterized in that,

the upper frame or the side frame has an open cross-sectional shape,

the panel frame has a reinforcing portion including irregularities arranged outside an opening portion of an opening cross section of the upper frame or the side frame.

The invention according to claim 15 is the panel frame structure according to any one of claims 1 to 14, characterized in that,

the panel frame is formed with reinforcing ribs of grid patterns.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the invention of claim 1, since the mounting bracket has a portion overlapping the upper frame when viewed from the front-rear direction, high rigidity can be obtained in the overlapping portion of the mounting bracket and the upper frame, and the strength of the panel frame structure can be improved.

According to the invention of claim 2, since the mounting bracket is in a state of covering at least a part of the upper frame, high rigidity can be obtained for the part of the mounting bracket covering the upper frame, and the strength of the panel frame structure can be improved.

According to the invention of claim 3, since the side frames, the mounting brackets and the upper frame have overlapping portions when viewed from the front-rear direction, higher rigidity can be obtained for these overlapping portions, and further strength improvement of the panel frame structure can be achieved.

According to the invention of claim 4, since the clearance space for disposing the fixing member for mounting the locking device is provided between the mounting bracket of the locking device and the upper frame, the fixing member can be disposed on the surface of the panel frame structure without protruding. Further, since the clearance space is used, the mounting bracket can be miniaturized and compacted.

According to the invention of claim 5, since the fixing member is joined to the side wall portion forming the clearance space, it is not necessary to press the fixing member at the time of mounting the lock device, and the assembling operation can be facilitated.

According to the invention of claim 6, since the mounting bracket has the clearance space inside the portion protruding in the front-rear direction, the mounting surface of the locking device can be ensured widely in the front-rear direction. This allows the locking device to be stably and strongly attached.

According to the invention of claim 7, the mounting bracket is joined to at least one of the upper frame or the side frame and the panel frame, so that when an external force is applied to the locking device, a load can be dispersed to the panel frame and the upper frame or the side frame, and the mounting strength of the locking device can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the locking device.

According to the invention of claim 8, a clearance space for storing the locking device is provided between the mounting bracket and the upper frame, so that the locking device can be protected. Further, the locking device can be disposed on the surface of the panel frame structure without protruding. Further, since the clearance space is used, the periphery of the lock device can be miniaturized and compactified.

According to the invention of claim 9, since the armrest holder has a portion overlapping with the side frame or the corner holder when viewed from the front-rear direction, the armrest holder is no longer required to be disposed so as to avoid the side frame or the corner holder, and thus the panel frame structure can be miniaturized.

Further, high rigidity can be obtained at the overlapping portion of the armrest support and the side frame or the corner support, and the strength of the panel frame structure can be improved.

According to the invention of claim 10, the armrest support is joined to the side frame or the corner support, so that improvement in mounting strength can be achieved.

According to the invention of claim 11, since the armrest support is not joined to the side frame or the corner support, the overlapping portion of the armrest support with the side frame or the corner support can be provided with a margin for generating deflection, and the load applied to the armrest can be absorbed, thereby suppressing occurrence of breakage, deformation, breakage, or the like.

According to the invention of claim 12, the armrest support is shaped so as to avoid the side frames or the corner supports in the front-rear direction, so that the rigidity of the armrest support can be improved by avoiding the bending of the shape. Further, the armrest support can be attached to the panel frame while avoiding the side frames or corner supports, and the armrest support can be mounted with high strength.

According to the invention of claim 13, since the reinforcing portion including the irregularities is provided at the inner side of the opening portion of the opening section of the upper frame in the panel frame, the upper frame can be joined to the portion of the panel frame having the rigidity increased by the reinforcing portion, and the joining strength of the upper frame or the side frame can be increased.

According to the invention of claim 14, since the reinforcing portion including the irregularities is provided in the panel frame so as to be arranged outside the opening portion of the opening cross section of the upper frame or the side frame, the upper frame or the side frame can be joined to the panel frame in the vicinity of the portion where the rigidity is improved by the reinforcing portion, and the joining strength of the upper frame or the side frame can be improved.

According to the invention of claim 15, since the panel frame is formed with the lattice-like reinforcing ribs, the rigidity of the panel frame against a load in the plane vertical direction can be improved, and the strength of the entire panel frame structure can be improved.

Drawings

Fig. 1 is a front view showing the front surface side of the panel frame structure in embodiment [1] related to the panel frame structure.

Fig. 2 is a perspective view of the right end portion of the upper frame with the mounting bracket removed.

Fig. 3 is a sectional view taken along line C-C in fig. 1.

Fig. 4 is a sectional view taken along line B-B in fig. 1.

Fig. 5 is a sectional view taken along line E-E in fig. 1.

Fig. 6 is a sectional view taken along line F-F in fig. 1.

Fig. 7 is a perspective view of the upper right part of the panel frame structure.

Fig. 8 is a sectional view taken along the line A-A in fig. 1.

Fig. 9 is a sectional view taken along line D-D in fig. 1.

Fig. 10 is an enlarged perspective view of the lower left portion of the panel frame structure.

Fig. 11 is a perspective view of an upper frame having a guide portion.

Fig. 12 is a front view showing a front surface side of a panel frame structure including a mounting bracket according to another embodiment.

FIG. 13 is a sectional view on G-G in FIG. 12.

Fig. 14 is a front view of the panel frame structure when the mounting bracket is transferred to the airbag module.

Fig. 15 is a sectional view taken along line H-H of fig. 14.

Fig. 16 is a sectional view taken along line H-H of fig. 14 in an example of an improvement of the flange portion.

Fig. 17 is a perspective view of a cushion frame structure in an embodiment relating to a cushion frame structure of a vehicle seat.

FIG. 18 is a plan view of the cushion frame structure.

FIG. 19 is a front view of the cushion frame structure.

FIG. 20 is a rear view of the cushion frame structure.

FIG. 21 is a left side view of the cushion frame structure.

FIG. 22 is a cross-sectional view taken at A-A in FIG. 18.

FIG. 23 is a sectional view taken on B-B in FIG. 19.

Fig. 24 is a front view showing the front surface side of the panel frame structure in embodiment [2] related to the panel frame structure.

FIG. 25 is a cross-sectional view of the panel frame structure taken along line A-A in FIG. 24.

Fig. 26 is a partial enlarged view of the front surface of the panel frame structure.

Fig. 27 is a partial perspective view of the panel frame structure.

Fig. 28 is a sectional view of the panel frame structure taken along line B-B in fig. 26.

Fig. 29 is a partial enlarged view of the upper right part of the panel frame structure.

Fig. 30 is a perspective view of another example of a frame-like portion to which the front panel frame is applied.

Fig. 31 is a schematic diagram of a front view of a panel frame structure to which another embodiment example of a connecting portion is applied.

Fig. 32 is a schematic diagram of a front view of a panel frame structure to which an example of another embodiment of a connecting portion is applied.

Fig. 33 is a schematic diagram of a front view of a panel frame structure to which an example of another embodiment of a connecting portion is applied.

Fig. 34 is a schematic front view of a panel frame structure to which an example of another embodiment of the connecting portion is applied.

Fig. 35 is a schematic front view of a panel frame structure to which an example of another embodiment of the connecting portion is applied.

Fig. 36 is a schematic front view of a panel frame structure to which an example of another embodiment of a connecting portion is applied.

Fig. 37 is a schematic front view of a panel frame structure to which an example of another embodiment of the connecting portion is applied.

Fig. 38 is a schematic front view of a panel frame structure to which an example of another embodiment of a connecting portion is applied.

Fig. 39 is a schematic diagram of a front view of a panel frame structure to which an example of another embodiment of a connecting portion is applied.

Fig. 40 is a schematic front view of a panel frame structure to which an example of another embodiment of the connecting portion is applied.

Fig. 41 is a schematic diagram of a front view of a panel frame structure to which an example of another embodiment of the reinforcing portion is applied.

Fig. 42 is a schematic diagram of a back view of a panel frame structure to which an example of another embodiment of the reinforcing portion is applied.

Fig. 43 is a perspective view showing the front surface side of the panel frame structure in embodiment [3] related to the panel frame structure.

Fig. 44 is a perspective view showing the rear surface side of the panel frame structure of fig. 43.

Fig. 45 is a partially enlarged perspective view of the panel frame structure of fig. 43.

Detailed Description

Embodiment [1] related to Panel frame Structure [1]

An embodiment [1] related to a panel frame structure will be described with reference to fig. 1 to 16.

However, the following embodiments are given by way of example only, and are not intended to limit the scope of the present invention to the following embodiments and examples.

The present embodiment is a panel frame structure to be applied to a backrest of a bench seat (bench seat) for a vehicle.

A vehicle including a bench seat suitable for a panel frame structure shown below includes all vehicles that a person such as a ship, an aircraft, a vehicle or the like rides on to move, but in the present embodiment, a case where the panel frame structure is applied to a bench seat of a vehicle, particularly an automobile is exemplified.

Fig. 1 is a front view showing a front surface side of the panel frame structure 2100.

In the drawings of the present embodiment, the vertical, horizontal, front-rear directions indicate directions in a state of being mounted on a vehicle. The following description will be given of each part of the panel frame structure 2100 based on the direction in the attached state. In fig. 1, the front side of the paper surface indicates "front", the back side indicates "back", and the left hand side is "left" and the right hand side is "right" in a state of being directed forward.

In addition, although the upper end portions of the panel frame structures 2100 are mounted to the vehicle in a state of being slightly inclined rearward, the plate surfaces of the panel frame structures 2100 are set to be along the up-down direction and the left-right direction for convenience of description unless otherwise described.

The panel frame structure 2100 is used as a framework of a backrest of a long seat for a vehicle. The panel frame structure 2100 is used for a backrest of a tandem seat. Further, it is assumed that the panel frame structure 2100 is provided with another panel frame structure for a single seat or a plurality of seats in the left side.

A foam-molded gasket is attached to the panel frame structure 2100 so as to wrap the panel frame structure 2100 from the front side. And a surface skin is sleeved on the surface of the liner. The sheathing means that the skin covering the surface of the pad is stretched along the surface of the pad.

[ outline of Panel frame Structure ]

The panel frame structure 2100 includes a panel frame 2020, an upper frame 2040, a lower frame 2050, a pair of left and right side frames 2060, 2070, a lock device 2110, a mounting bracket 2080, an armrest bracket 2090, left and right corner brackets 2120, 2130, a belt guide 2140, a plurality of headrest supports 2150, and the like.

The panel frame 2020 is made of a metal plate such as steel or an aluminum alloy, and is disposed in the vehicle seat in a state in which the vertical edges of the panel frame 2020 are oriented in the left-right direction and the left-right edges are oriented in the up-down direction, as shown in fig. 1.

[ outline of Panel frame ]

As shown in fig. 1, the panel frame 2020 is a substantially rectangular metal plate having a front view and a plate surface shape slightly longer in the left-right direction.

One side in the vertical direction with respect to the panel surface of the panel frame 2020 is set to the front and the other side is set to the rear. Most of the structures described below are provided on the front surface side of the panel frame 2020.

In addition, when the respective structures of the panel frame structure 2100 are simply referred to as "joining", they are joined by welding, more preferably laser welding. However, a welding method other than laser welding may be used, and a joining method other than welding may be used.

The panel frame 2020 includes a peripheral wall-shaped flange 2201 (see fig. 3 to 6) standing forward over substantially the entire periphery of the outer edge thereof. In the flange 2201, only the lower portions of the right end upper portion, the left end portion, and the right end portion of the panel frame 2020, which are the mounting positions of the mounting bracket 2080 and the left and right corner brackets 2120, 2130 described later, are removed.

Further, an upper frame 2040, a lower frame 2050, a left side frame 2060, and a right side frame 2070 are joined to the upper end, the lower end, the left end, and the right end of the front surface of the panel frame 2020, respectively.

The four frames 2040 to 2070 are provided along the outer edge portion of the panel frame 2020 further inside the outer edge portion, and the four frames 2040 to 2070 are integrally connected to form a rectangular frame shape.

In the inner regions of the four frames 2040 to 2070 in the panel frame 2020, parallel reinforcing parts (reinforcing parts including irregularities) 2021 to 2024 including linear reinforcing ribs are formed. The parallel reinforcement portions 2021 to 2024 are provided in parallel with the respective frames 2040 to 2070 beside the respective frames 2040 to 2070.

Each of the side-by-side reinforcement portions 2021 to 2024 is a convex strip that is convex toward the front on the front surface of the flat surface of the panel frame 2020 and concave toward the front on the rear surface.

The parallel reinforcing portion 2021 alone is not entirely linear, but is formed in a shape that bypasses the joint portion of the belt guide 2140 at the center portion thereof and turns downward.

In the following description, the term "reinforcing portion" refers to a portion or member having rigidity higher than that of a flat plate by a three-dimensional structure such as a ridge, a frame, a convex portion, and a bent portion.

Further, a central reinforcing portion 2025 including reinforcing ribs of grid patterns is formed in the entire inner region of the four parallel reinforcing portions 2021 to 2024 in the panel frame 2020. The central reinforcement portion 2025 is a composite ridge that is convex toward the front on the front surface of the panel frame 2020 and concave toward the front on the rear surface (grid-like). The mesh patterns of the central reinforcement portion 2025 are formed by regular tetragonal arrangement in an oblique direction. The quadrangle is square, rectangle, diamond and parallelogram.

[ Upper frame ]

The upper frame 2040 is joined to the panel frame 2020 with the right end portion thereof covered by the mounting bracket 2080 from the front. Fig. 2 is a perspective view of the right end portion of the upper frame 2040 in a state in which the mounting bracket 2080 is removed, fig. 3 is a sectional view along the line C-C in fig. 1, and fig. 4 is a sectional view along the line B-B in fig. 1.

The upper frame 2040 is a metal stay formed by press working a flat plate of steel, aluminum alloy, or the like, and is disposed along the left-right direction at the upper end of the front surface of the panel frame 2020.

As shown in fig. 3, the upper frame 2040 has: the columnar portion 2041 has a substantially U-shaped opening cross-sectional shape that deforms over substantially the entire length; and a pair of flange portions 2042 formed over substantially the entire length thereof at both end portions of the columnar portion 2041 on the open side. The pair of flange portions 2042 each have a planar portion facing the panel frame 2020. The planar surface is in contact with the panel frame 2020, and the plurality of portions are joined by laser welding along the longitudinal direction.

The oval of the broken line in fig. 3 is a joint formed by laser welding. The same applies to the ellipses of the broken lines in the figures other than fig. 3.

As shown in fig. 3, a front surface portion 2043 including an inclined surface inclined downward rearward is formed on the front side of the columnar portion 2041 of the upper frame 2040 over substantially the entire length except for the left and right end portions.

A step reinforcing portion 2026 (reinforcing portion including irregularities) including a step in the front-rear direction is formed at a position between two flange portions 2042 of the panel frame 2020, which become the upper frame 2040 (not shown in fig. 1). The step-difference reinforcement portion 2026 is formed along the longitudinal direction of the upper frame 2040. The step reinforcement portion 2026 may be formed over substantially the entire length of the upper frame 2040.

In the panel frame 2020, the above-described parallel reinforcement portion 2021 is formed in parallel with the upper frame 2040 immediately below the upper frame 2040. The parallel reinforcement portion 2021 extends in the left-right direction in a range substantially near the entire length of the upper frame 2040.

The two flange portions 2042 of the upper frame 2040 are joined to the panel frame 2020 with the step difference reinforcement portion 2026 interposed therebetween.

The step reinforcement 2026 in the panel frame 2020 has high rigidity around the parallel reinforcement 2021. Accordingly, the upper frame 2040 can achieve an improvement in the joining strength to the panel frame 2020.

As shown in fig. 1, the left end portion of the upper frame 2040 is formed with a notch whose front end portion is closed and into which the upper end portion of the left side frame 2060 is inserted from below. Therefore, the left end portions of the upper frames 2040 are joined to the panel frame 2020 in a state of overlapping the upper end portions of the side frames 2060 from the front side when viewed from the front-rear direction.

In addition, the overlapping portions of the upper end portion of the side frame 2060 and the left end portion of the upper frame 2040 may be joined by laser welding or the like.

The right end portion of the upper frame 2040 has a bent portion 2044 which is bent 90 degrees to face downward as shown in fig. 2, and the bent portion 2044 is configured to overlap in the front-rear direction by covering the upper end portion of the right side frame 2070 from the front side.

The flange 2042 on the right side of the bent portion 2044 protrudes largely to the right, and a joint surface with respect to the front surface of the panel frame 2020 is widely secured.

Further, as shown in fig. 4, the right end portion of the upper frame 2040 overlaps the right side frame 2070 in the front-rear direction at a bent portion 2044 having a substantially U-shaped cross section. Further, the flange portion 2085 of the mounting bracket 2080 is formed on the front side, and the flange portion 2072 of the side frame 2070 is formed on the rear side, with respect to the flange portion 2042 on the left side, and is integrally joined to the panel frame 2020 in a triple-overlapping state.

The flange portion 2083 of the mounting bracket 2080 is joined to the panel frame 2020 with the flange portion 2042 on the right side of the upper frame 2040 overlapping on the front side.

In addition, in the case of the bent portion 2044 of the upper frame 2040, a step reinforcing portion 2027 (reinforcing portion including irregularities) including a step in the lateral direction is also formed at a position between the two flange portions 2042 of the panel frame 2020 (not shown in fig. 1). The step-difference reinforcement portion 2027 is also provided between the two flange portions 2072 of the right side frame 2070, and thus may be formed over the entire length of the side frame 2070.

By the step-difference reinforcement portion 2027, the rigidity of the periphery of the step-difference reinforcement portion 2027 in the panel frame 2020 is improved, and the bending portion 2044 of the upper frame 2040 can achieve an improvement in the joining strength to the panel frame 2020.

[ lower frame and side frame ]

Fig. 5 is a sectional view taken along line E-E in fig. 1, and fig. 6 is a sectional view taken along line F-F in fig. 1. The lower frame 2050, the left side frame 2060, and the right side frame 2070 are described with reference to fig. 1, 5, and 6.

The lower frame 2050, the left side frame 2060, and the right side frame 2070 are each a metal pillar formed by press working a flat plate of steel, aluminum alloy, or the like.

The lower frame 2050 is disposed along the left-right direction at the front lower end of the panel frame 2020.

The left side frame 2060 is disposed in the vertical direction at the front left end of the panel frame 2020.

The right side frame 2070 is disposed along the up-down direction at the right end of the front surface of the panel frame 2020.

As shown in fig. 1, the lower frame 2050 has: the columnar portion 2051 has a substantially U-shaped opening cross-sectional shape throughout its entire length; and a pair of flange portions 2052 formed over substantially the entire length thereof at both end portions of the columnar portion 2051 on the open side. Each of the pair of flange portions 2052 has a planar portion facing the panel frame 2020, and in a state where the planar portions are brought into surface contact with each other, a plurality of portions are joined to the panel frame 2020 by laser welding in the longitudinal direction.

In the panel frame 2020, the above-mentioned parallel reinforcement portion 2022 is formed in parallel with the lower frame 2050 immediately above the lower frame 2050. The parallel reinforcement portion 2022 extends in the left-right direction in a range substantially near the entire length of the lower frame 2050.

The perimeter of the juxtaposed reinforcement 2022 in the panel frame 2020 increases rigidity. Accordingly, the lower frame 2050 achieves an improvement in the joining strength to the panel frame 2020.

As shown in fig. 5 and 6, the left side frame 2060 and the right side frame 2070 have: the columnar portions 2061, 2071 have a substantially U-shaped opening cross-sectional shape throughout the entire length; and a pair of flange portions 2062, 2072 formed over substantially the entire length thereof at both end portions of the columnar portions 2061, 2071 on the open side. Each of the pair of flange portions 2062, 2072 has a planar portion facing the panel frame 2020, and in a state where the planar portions are in surface contact with each other, a plurality of portions are joined to the panel frame 2020 by laser welding in the longitudinal direction.

In the panel frame 2020, the side-by-side reinforcement portions 2023 and 2024 are formed in parallel with the side frames 2060 and 2070, in the right-side immediate vicinity of the left side frame 2060 and the left-side immediate vicinity of the right side frame 2070. The parallel reinforcement portions 2023, 2024 extend in the up-down direction over a range substantially near the entire length of the side frames 2060, 2070.

The perimeter of the juxtaposed reinforcements 2023, 2024 in the panel frame 2020 increases rigidity. Accordingly, the side frames 2060, 2070 achieve an improvement in the joint strength to the panel frame 2020.

[ locking device ]

The locking device 2110 comprises a well known structure.

As an example, a lock device including a latch capable of locking and unlocking a striker (striker) and a ratchet capable of switching between holding and unlocking of the locked state of the latch by an external operation may be employed as in a latch mechanism described in japanese patent application laid-open No. 2015-163506, in which the housing has a notch portion into which the striker (striker) including a loop wire is inserted.

As shown in fig. 1, the lock device 2110 is attached to the mounting bracket 2080 with the notch of the housing facing rearward.

By moving the panel frame structure 2100 rearward with respect to the striker disposed rearward of the panel frame structure 2100 with the front end portion thereof directed to the left, the front end portion of the striker can be made to enter the notch from the rear relatively, and the panel frame structure 2100 can be fixed in the front-rear direction.

[ mounting bracket ]

Fig. 7 is a perspective view of the upper right portion of the panel frame structure 2100, fig. 8 is a sectional view taken along the line A-A in fig. 1, and fig. 9 is a sectional view taken along the line D-D in fig. 1.

The mounting bracket 2080 will be described with reference to fig. 1, 4, and 7 to 9.

Mounting brackets 2080 are disposed in the upper right corner of the front surface of panel frame 2020.

The mounting bracket 2080 is a metal bracket formed by press working a flat plate of steel, aluminum alloy, or the like.

The mounting bracket 2080 has a lower portion 2081 and an upper portion 2082.

The lower portion 2081 extends in the up-down direction to cover the entire upper portion of the right side frame 2070. The upper portion 2082 is bent from the upper end of the lower portion 2081 and extends leftward to cover the right end of the upper frame 2040.

The lower portion 2081 and the upper portion 2082 of the mounting bracket 2080 have a substantially U-shaped opening cross-section over substantially the entire length in the extending direction, and the opening of the opening cross-section is directed toward the panel frame 2020.

As shown in fig. 9, the mounting bracket 2080 has flange portions 2083, 2084 extending leftward and rightward from the lower portion 2081.

In the mounting bracket 2080, the portion of the lower portion 2081 having an open cross-sectional shape overlaps the left and right flange portions 2083, 2084 with the pillar-shaped portion 2071 and the left and right flange portions 2072 of the right side frame 2070 from the front.

The overlapping portion of the flange portion 2083 and the flange portion 2072 and the overlapping portion of the flange portion 2084 and the flange portion 2072 are integrally joined to the panel frame 2020 by laser welding in a state of overlapping.

The rear surface of the portion of the lower portion 2081 having the opening cross-sectional shape may be joined to the front surface of the pillar-shaped portion 2071 of the right side frame 2070 at a portion where the rear surface is in surface contact.

As shown in fig. 7 and 8, the mounting bracket 2080 includes flange portions 2085, 2086 extending downward and leftward from the upper portion 2082.

In the mounting bracket 2080, a portion of the upper portion 2082 having an opening cross-sectional shape overlaps the flange portion 2086 with the bent portion 2044 and the flange portion 2042 of the upper frame 2040 from the front.

The overlapping portion of the flange portion 2086 and the flange portion 2042 is integrally joined to the panel frame 2020 in a state of overlapping.

In addition, other overlapping portions of the mounting bracket 2080 and the upper frame 2040 may be joined.

As shown in fig. 4, the upper portion 2082 of the mounting bracket 2080 overlaps the columnar portion 2071 of the side frame 2070 and the curved portion 2044 of the upper frame 2040 in the front-rear direction.

The triple overlapping portions may be integrally joined at any position.

The flange portions 2085 of the mounting brackets 2080 overlap with the flange portions 2072 of the side frames 2070 and the flange portions 2042 of the upper frame 2040 in the front-rear direction.

The triple overlapping portions are integrally joined to the panel frame 2020.

The flange 2085 extends to the left of the flange 2072 or 2042, and the front end thereof is joined to the panel frame 2020 alone.

As shown in fig. 4, the mounting bracket 2080 has a bulge 2088 forming a gap space 2087 with respect to the upper frame 2040. The bulge 2088 bulges forward from the front surfaces of the right end portions of the lower portion 2081 and the upper portion 2082. Thus, the bulge 2088 can secure a flat side wall 2089 widely on the right side, and the outer surface (right side surface) of the side wall 2089 is used as the mounting surface of the lock device 2110.

The lock device 2110 is fixedly attached to the attachment surface of the attachment bracket 2080 by bolts 2111 and nuts 2112 as fixing members. Also, the clearance space 2087 of the mounting bracket 2080 is utilized as a storage space for the nut 2112. The nut 2112 is fixed to the inner surface of the sidewall 2089 by bonding or the like in the clearance space 2087.

The number of bolts 2111 and nuts 2112 may be plural as fixing members.

[ corner bracket ]

The left and right corner brackets 2120, 2130 will be described with reference to fig. 1.

The left corner bracket 2120 is disposed at the left lower corner in the front surface of the panel frame 2020. The right corner bracket 2130 is disposed at the lower right corner of the front surface of the panel frame 2020.

Each of the corner brackets 2120 and 2130 is a metal bracket formed by press working a flat plate of steel, aluminum alloy, or the like.

The left corner bracket 2120 has an upper portion and a lower portion. The upper portion extends upward, and covers the lower end portion of the left side frame 2060 from the front. The lower portion extends rightward, covering the left end portion of the lower frame 2050 from the front. The portions of the corner brackets 2120 that overlap the side frames 2060 and the lower frames 2050 may also be engaged with each other.

The upper and lower portions of the corner bracket 2120 are integrated into an elbow shape.

The upper and lower portions of the corner brackets 2120 have a substantially U-shaped opening cross-section over substantially the entire length in the extending direction, and the opening of the opening cross-section is directed toward the panel frame 2020.

The left corner bracket 2120 has a flange portion 2121 that protrudes to the inside of the corner. The flange 2121 is flat and is joined to the front surface of the panel frame 2020.

The corner bracket 2120 also has a flat flange 2122 on the left side of the corner. The flange portion 2122 is formed with a mounting hole for mounting the panel frame structure 2100 to a vehicle (see fig. 10).

The right hand corner bracket 2130 has an upper portion and a lower portion. The upper portion extends upward, and covers the lower end portion of the right side frame 2070 from the front. The lower portion extends leftward, and covers the right end portion of the lower frame 2050 from the front. The portions of the corner brackets 2130 that overlap the side frames 2070 and the lower frame 2050 may also be joined to each other.

The upper and lower portions of the corner bracket 2130 are integrated into an elbow shape.

The upper and lower portions of the corner brackets 2130 have a substantially U-shaped opening cross-sectional shape over substantially the entire length in the extending direction, and the opening of the opening cross-section is directed toward the panel frame 2020.

The right corner bracket 2130 has a flange portion 2131 extending inward at the corner. Flange 2131 is flat and is joined to the front surface of panel frame 2020.

The corner bracket 2130 also has a flat plate-shaped flange 2132 which extends to the left of the corner. The flange 2132 is formed with mounting holes, not shown, for mounting the panel frame structure 2100 to a vehicle.

[ Armrest support ]

Japanese patent laid-open publication 2020-079962 discloses a panel frame structure including a support bracket for armrests.

As described in the publication, conventionally, a panel-shaped fixing patch having projections and depressions is bonded to the mounting range of the support bracket in the panel frame in accordance with the projection and depression of the panel frame. The support bracket is attached to the panel frame via a fixing patch.

However, since the above-described conventional panel frame structure is configured such that the support bracket of the armrest is attached via the panel-shaped fixing patch, there is a problem in that the fixing patch has to be avoided when members other than the support bracket are attached to the panel frame, and thus the size of the whole panel frame structure is increased.

The following mounting structure of the armrest bracket has been completed in view of the above-described circumstances, and an object thereof is to achieve miniaturization of the panel frame structure.

The invention of solution 1 for solving the above problems is a panel frame structure comprising:

a panel frame;

an upper frame coupled along an upper end portion of the panel frame;

a side frame joined along a side end of the panel frame;

a handrail support supporting a handrail; and

a corner bracket joined to a corner of the panel frame, the panel frame structure characterized in that,

The invention of solution 2 is according to solution 1, characterized in that,

the armrest support is coupled to the side frame or the corner support.

The invention of solution 3 is according to solution 1, characterized in that,

The invention of solution 4 is according to any one of solution 1 to solution 3, characterized in that,

Fig. 10 is an enlarged perspective view of a lower left portion of the panel frame structure 2100.

The contents of the solution are specifically described with respect to the armrest support 2090 and its mounting structure based on fig. 10.

The armrest bracket 2090 is disposed at the lower left corner of the front surface of the panel frame 2020 and slightly above the corner bracket 2120.

The armrest bracket 2090 is a metal bracket formed by press working a flat plate of steel, aluminum alloy, or the like.

The armrest support 2090 has a main body portion 2091, a detour portion 2092, and a pair of arm portions 2093, 2094.

The body portion 2091 is elongated in the left-right direction and has a rear surface joined to the front surface of the panel frame 2020. The main body 2091 is formed with a pair of upper and lower reinforcing portions 2095 including reinforcing ribs along the longitudinal direction.

Each of the reinforcing portions 2095 is a convex ridge protruding forward on the front surface of the flat surface of the armrest holder 2090 and recessed forward on the rear surface.

The bypass portion 2092 is located leftward from the left end portion of the main body portion 2091, and overlaps with the lower end portion of the side frame 2060 and the corner bracket 2120 in the front-rear direction. The bypass portion 2092 is bent into a crank shape so as to bypass from the left end portion of the main body portion 2091 to the front side of the side frame 2060 and the corner bracket 2120.

The portion of the bypass portion 2092 overlapping the corner bracket 2120 in the front-rear direction may be joined to the front surface of the corner bracket 2120 or may not be joined to the front surface of the corner bracket 2120.

The two reinforcing rib-like reinforcing portions 2095 formed in the main body portion 2091 are formed so as to extend to the vicinity of the left end portion of the bypass portion 2092.

The left arm portion 2093 is bent from the left end portion of the bypass portion 2092 and extends forward. The right arm portion 2094 is bent from the right end portion of the main body portion 2091 and extends forward.

The left and right arm portions 2093, 2094 are formed with through holes concentric with each other when viewed from the left and right direction. These through holes are used to rotatably support the bottom end portion of an unillustrated armrest about an axis along the left-right direction.

[ conduction band apparatus ]

The belt guide 2140 is illustrated based on fig. 1.

A retractor (not shown) for paying out the webbing is provided in the front surface center portion of the panel frame 2020. The belt guide 2140 is disposed at an upper center portion in the front surface of the panel frame 2020 and above the retractor.

The belt guide 2140 is a member for guiding the webbing paid out from the lower retractor so as to pass through the lower retractor and turn back downward.

The belt guide 2140 is formed by punching a flat plate of steel, aluminum alloy, or the like.

Belt guide 2140 has an insertion portion 2141 for passing a seat belt therethrough and four legs 2142.

The insertion portion 2141 has a substantially U-shaped opening cross-section in the vertical direction, and the opening of the opening cross-section is directed toward the panel frame 2020. The insertion portion 2141 allows the seat belt to be inserted from below to above.

The leg 2142 has a leg extending from the upper end of the insertion portion 2141 to the left and right, and a leg extending from the lower end of the insertion portion 2141 to the left and right.

The rear surfaces of the upper two feet 2142 are joined to the front surface portion 2043 of the upper frame 2040.

The rear surfaces of the lower two feet 2142 are joined to the front surface of the panel frame 2020.

In this way, the belt guide 2140 is secured to a different member on the upper side than on the lower side.

[ support for headrest ]

As shown in fig. 1 and 2, the headrest support 2150 is joined by arranging four points, i.e., two points on the left side and two points on the right side, of the belt guide 2140 in the front surface portion 2043 of the upper frame 2040 in a row.

The headrest supports 2150 support the headrest, not shown, in a group of two.

Each support 2150 is a substantially square tubular member formed by bending a metal plate, and is attached to the front surface portion 2043 of the upper frame 2040 in the vertical direction.

The headrest includes a pair of left and right headrest posts. The headrest is supported in a state where each of the headrest posts is inserted from above the two supports 2150 to the inside thereof.

[ technical Effect of embodiments of the invention ]

In the panel frame structure 2100, since the mounting bracket 2080 has a portion overlapping the upper frame 2040 when viewed from the front-rear direction, high rigidity can be obtained in the overlapping portion of the mounting bracket 2080 and the upper frame 2040, and strength of the panel frame structure 2100 can be improved.

In addition, the overlapping portions may also be joined to each other.

Further, in the panel frame structure 2100, since the mounting bracket 2080 covers at least a part of the upper frame 2040, high rigidity can be obtained for the portion of the mounting bracket 2080 that covers the upper frame 2040, and strength of the panel frame structure can be improved.

Further, in the panel frame structure 2100, since the side frames 2070, the mounting brackets 2080 and the upper frame 2040 have portions that overlap when viewed from the front-rear direction, higher rigidity can be obtained for these overlapping portions, and further strength improvement of the panel frame structure 2100 can be achieved.

The overlapping portions in the form of triplets may be integrally joined.

Further, since the panel frame structure 2100 has the gap space 2087 in which the nut 2112 is disposed between the mounting bracket 2080 and the upper frame 2040, the nut 2112 can be disposed on the surface of the panel frame structure 2100 without protruding. Further, since the clearance space 2087 is used, the periphery of the mounting bracket 2080 can be miniaturized and compactified.

Further, the bolts 2111 may be disposed in the clearance spaces 2087, so that the screws of the bolts 2111 protrude outside the mounting bracket 2080. In this case, the nut 2112 secures the locking device 2110 by tightening the bolt 2111 on the outside. At this time, the bolts 2111 may be joined to the inner wall of the mounting bracket 2080.

Further, in the panel frame structure 2100, the nut 2112 is joined to the inner surface side of the side wall portion 2089 of the bulge portion 2088, and therefore, it is not necessary to press the nut 2112 at the time of mounting the lock device 2110, and the assembling work can be facilitated.

Further, in the panel frame structure 2100, the mounting bracket 2080 has the clearance space 2087 inside the bulge 2088 protruding in the front-rear direction, and therefore the mounting surface of the lock device 2110 can be widely secured in the front-rear direction. This allows the locking device 2110 to be stably and strongly attached.

Further, in the panel frame structure 2100, the mounting brackets 2080 are bonded to the upper frame 2040, the side frames 2070, and the panel frame 2020, respectively, so that when an external force is applied to the locking device 2110, a load can be dispersed to the panel frame 2020, the upper frame 2040, and the side frames 2070, and the mounting strength of the locking device 2110 can be maintained high. Further, the deflection of the panel frame structure 2100 can be suppressed with respect to the external force applied to the lock device 2110.

Further, in the panel frame structure 2100, since the armrest bracket 2090 has a portion overlapping the side frame 2060 or the corner bracket 2120 when viewed in the front-rear direction, it is no longer necessary to dispose the side frame 2060 or the corner bracket 2120 so as to avoid the armrest bracket 2090, and thus the panel frame structure 2100 can be miniaturized.

Further, high rigidity can be obtained at the overlapping portion of the armrest support 2090 and the side frame 2060 or the corner support 2120, and the strength of the panel frame structure 2100 can be improved.

Further, in the panel frame structure 2100, when the armrest bracket 2090 is joined to the side frame 2060 or the corner bracket 2120, the mounting strength can be improved.

Further, when the armrest support 2090 is not joined to the side frame 2060 or the corner support 2120, the overlapping portion of the side frame 2060 or the corner support 2120 in the armrest support 2090 can be provided with a margin for generating deflection. Thus, the load applied to the handrail can be absorbed, and occurrence of breakage, deformation, breakage, and the like can be suppressed.

Further, since the armrest support 2090 has a shape in which the bypass portion 2092 avoids the side frames 2060 or the corner supports 2120 in the front-rear direction, the rigidity of the armrest support 2090 can be improved by bending the bypass portion 2092 in the avoidance shape. Further, the armrest bracket 2090 can be attached to the panel frame 2020 while avoiding the side frames 2060 or the corner brackets 2120, thereby enabling the armrest bracket 2090 to be mounted with high strength.

Further, since the panel frame structure 2100 includes the step reinforcing portions 2026 and 2027 at positions inside the opening portion of the panel frame 2020, which is the opening cross section of the upper frame 2040, the upper frame 2040 can be joined to portions of the panel frame 2020, which are increased in rigidity by the step reinforcing portions 2026 and 2027, and the joining strength of the upper frame 2040 can be increased.

Further, since the panel frame structure 2100 includes the parallel reinforcement portions 2021 to 2024 arranged outside the openings of the opening sections of the upper frame 2040, the side frames 2060, 2070, and the lower frame 2050 in the panel frame 2020, the upper frame 2040, the side frames 2060, 2070, and the lower frame 2050 can be joined to the vicinity of the portions where the rigidity is improved by the parallel reinforcement portions 2021 to 2024, and the joining strength of the upper frame 2040, the side frames 2060, 2070, and the lower frame 2050 can be improved.

Further, in the panel frame structure 2100, since the center reinforcement portion 2025 including the lattice-shaped reinforcing ribs is formed in the panel frame 2020, the rigidity of the panel frame 2020 against a load in the plane vertical direction can be improved, and the strength of the entire panel frame structure 2100 can be improved.

[ another embodiment of the belt guide ]

Instead of the belt guide 2140, a guide portion 2045 that functions equally to the belt guide 2140 may be provided on the upper frame 2040. Fig. 11 is a perspective view of an upper frame 2040 having a guide portion 2045.

As shown in the drawing, the guide portion 2045 of the upper frame 2040 is formed to be curved so that only the longitudinal direction intermediate portion of the columnar portion 2041 is separated forward from the front surface of the panel frame 2020. The webbing BS may be guided through the gap formed by the guide portion 2045 and the panel frame 2020.

By means of said guide 2045, the belt guide 2140 can be dispensed with.

The flange portion 2042 may not be provided to a portion of the upper frame 2040 corresponding to the guide portion 2045 in the longitudinal direction.

In the guide portion 2045, the corner portion with which the seat belt BS contacts may be provided with a curvature to improve the sliding of the seat belt BS.

[ another embodiment of mounting bracket ]

Fig. 12 is a front view showing a front surface side of a panel frame structure 2100 including a mounting bracket 2080 of another embodiment, and fig. 13 is a sectional view on G-G in fig. 12.

The mounting bracket 2080 in fig. 1 is configured to mount the lock device 2110 to the right side surface on the outside, but is not limited thereto.

The mounting bracket 2080 shown in fig. 12 and 13 expands the width of the bulge 2088 in the lateral direction than the mounting bracket 2080 of fig. 1, thereby expanding the volume of the gap space 2087.

Thus, the mounting bracket 2080 is able to stow the locking device 2110 into the clearance space 2087.

In the case of such a construction, the member (e.g., striker) fixedly held to the locking device 2110 should be allowed to reach the locking device 2110 inside the (access) mounting bracket 2080. For example, a notch or an opening for allowing a member such as a striker to enter is preferably provided on the right side surface of the mounting bracket 2080.

In fig. 13, the mounting bracket 2080 is illustrated in which the nut 2112 as a fixing member is disposed outside the mounting bracket 2080, but (the head of) the bolt 2111 may be disposed outside the mounting bracket 2080.

According to the above structure, the clearance space 2087 for storing the locking device 2110 is provided between the mounting bracket 2080 and the upper frame 2040, so that the locking device 2110 can be protected from the outside. Further, the lock device 2110 can be disposed on the surface of the panel frame structure 2100 without protruding. Further, since the clearance space 2087 is used, the periphery of the lock device 2110 can be miniaturized and compactified.

[ conversion of mounting bracket to airbag Module ]

The following examples are disclosed in Japanese patent application laid-open No. 2015-163506: a mounting bracket for mounting a unit having a specific function of a vehicle seat is disposed on a side frame of the seat frame.

However, the conventional panel frame structure has room for improvement in strength of the structure. In particular, when the functional unit is an airbag module, sufficient strength is required for the panel frame structure in order for the airbag to function effectively.

The following panel frame structure has been completed in view of the above-described circumstances, and an object thereof is to improve the strength of the panel frame structure.

a panel frame;

an upper frame coupled along an upper end portion of the panel frame;

a side frame joined along a side end of the panel frame; and

an airbag module mounting bracket, the panel frame structure characterized in that,

The invention of solution 2 is according to solution 1, characterized in that,

The invention of solution 3 is according to solution 1 or 2, characterized in that,

The invention of solution 4 is according to solution 1, characterized in that,

a clearance space is provided between the mounting bracket and the upper frame, in which a fixing member for mounting the airbag module is disposed.

The invention of solution 5 is according to solution 4, characterized in that,

the fixing member is joined to an inner surface side of a side wall portion forming the gap space.

The invention of solution 6 is according to solution 4 or 5, characterized in that,

The invention of solution 7 is according to solution 3, characterized in that,

The invention of solution 8 is according to any one of claims 1 to 7, characterized in that,

the panel frame has a flange portion facing the airbag module mounted to the mounting bracket at an outer edge portion.

Fig. 14 is a front view of the panel frame structure 2100 when the mounting bracket 2080 is transferred to the airbag module 2160, fig. 15 is a cross-sectional view taken along the line H-H in fig. 14, and fig. 16 is a cross-sectional view taken along the line H-H in fig. 14 in an example in which the flange portion 2201 is modified.

The content of the solution will be specifically described with reference to fig. 14 to 16 for the panel frame structure 2100.

The airbag module 2160 has a function of releasing and expanding the airbag toward the front of the panel frame structure 2100 when an impact is applied.

The dimension of the airbag module 2160 in the up-down direction is larger than the locking device 2110 described above. Therefore, the mounting bracket 2080 for holding the airbag module 2160 is also larger in vertical dimension than the mounting bracket 2080 for the locking device.

Further, the bolts 2111 and the nuts 2112 as the fixing members may be more than the case of the locking device 2110.

As shown in fig. 15, the bulge portion 2088 of the mounting bracket 2080 is also formed longer in the up-down direction, and the outer side surface of the side wall portion 2089 of the mounting airbag module 2160 is also formed longer in the up-down direction.

The airbag module 2160 is attached to the right side surface of the outer side of the bulge 2088, and the nut 2112 as a fixing member is disposed in the clearance space in the bulge 2088 and joined to the inner surface of the side wall 2089. However, the following structure is also possible: the nut 2112 is disposed in the clearance space in the bulge 2088 and is joined to the inner surface of the sidewall 2089.

As described above, the mounting bracket 2080 is formed longer in the up-down direction and extends further downward, except for this point, it is the same as the mounting bracket 2080 shown in fig. 1. The panel frame structure 2100 shown in fig. 14 is similar to the panel frame structure 2100 shown in fig. 1 except for the mounting bracket 2080.

Further, as shown in fig. 16, the flange portion 2201 of the panel frame 2020 may extend forward at least in a right-adjacent range of the airbag module 2160 to the extent of facing the airbag module 2160. In the example shown in the figure, the flange portion 2201 extends to about half of the front-rear direction of the airbag module 2160, but the flange portion 2201 may extend to a position substantially identical to the front-rear direction of the airbag module 2160.

According to the above configuration, since the mounting bracket 2080 of the airbag module 2160 has a portion overlapping with the upper frame 2040 when viewed from the front-rear direction, high rigidity can be obtained at the overlapping portion of the mounting bracket 2080 and the upper frame 2040, and strength of the panel frame structure 2100 can be improved.

Further, according to the above configuration, since the mounting bracket 2080 covers at least a part of the upper frame 2040, high rigidity can be obtained for the portion of the mounting bracket 2080 that covers the upper frame 2040, and strength of the panel frame structure 2100 can be improved.

Further, according to the above-described structure, since the side frames 2070, the mounting brackets 2080 and the upper frame 2040 have portions overlapping each other when viewed from the front-rear direction, higher rigidity can be obtained for these overlapping portions, and further strength improvement of the panel frame structure 2100 can be achieved.

Further, according to the above-described structure, the gap space 2087 in which the nut 2112 for attaching the airbag module 2160 is disposed is provided between the attachment bracket 2080 of the airbag module 2160 and the upper frame 2040, and therefore the nut 2112 can be disposed on the surface of the panel frame structure 2100 without protruding. Further, since the clearance space 2087 is used, the periphery of the mounting bracket 2080 can be miniaturized and compactified.

Further, according to the above-described structure, the nut 2112 is joined to the inner surface side of the side wall portion 2089 forming the clearance space 2087, so that it is not necessary to press the nut 2112 at the time of mounting the airbag module 2160, and the assembling work can be facilitated.

Further, according to the above configuration, the mounting bracket 2080 has the clearance space 2087 inside the bulge portion 2088 protruding in the front-rear direction, and therefore the mounting surface of the airbag module 2160 can be widely secured in the front-rear direction. This enables the airbag module 2160 to be stably and strongly mounted.

Further, according to the above-described structure, the mounting brackets 2080 are respectively joined to the upper frame 2040, the side frame 2070, and the panel frame 2020, so that when an external force is applied to the airbag module 2160, a load can be dispersed to the panel frame 2020, the upper frame 2040, and the side frame 2070, and the mounting strength of the airbag module 2160 can be maintained high. Further, the deflection of the panel frame structure 2100 can be suppressed with respect to the external force applied to the airbag module 2160.

Further, according to the above configuration, since the panel frame 2020 has the flange portion 2201 facing the airbag module 2160 at the outer edge portion, the airbag module 2160 can be protected from the outside, and the operation of the airbag module 2160 can be performed more stably even in an emergency.

[ others ]

The embodiments of the present invention have been described above. The invention is not limited to the embodiments described. For example, in the embodiment, constituent elements integrally formed from a single member may be replaced with constituent elements divided into a plurality of members and coupled or fixed to each other. The constituent element formed by connecting a plurality of members may be replaced by a constituent element integrally formed from a single member. In addition, the details shown in the embodiments may be appropriately changed within a range not departing from the gist of the invention.

As an embodiment of the present invention, a panel frame structure 2100 for a tandem seat having a wide left-right width is exemplified in which two sets of headrest supports 2150 are provided. However, the technical features of the panel frame structure 2100 may be applied to a panel frame structure in which the support 2150 is provided as a single group and the width of the left and right sides is reduced, and the panel frame structure may be used for a seat of a single seat.

Similarly, the technical features of the panel frame structure 2100 may be applied to a panel frame structure of a multi-seat in which two or more support members 2150 are provided and the left and right widths are widened.

The panel frame structure 2100 is illustrated as a substantially rectangular shape, but may be a substantially square shape.

Embodiment relating to cushion frame Structure of vehicle seat

An embodiment relating to a cushion frame structure of a vehicle seat will be described with reference to fig. 17 to 23.

The present embodiment is a cushion frame structure of a vehicle seat.

A vehicle including a vehicle seat to which the cushion frame structure shown below is applied includes all vehicles in which a person such as a ship, an aircraft, and a vehicle rides and moves, but in the present embodiment, a case in which the cushion frame structure is applied to a vehicle, particularly a vehicle seat is exemplified.

Although not shown, the seat frame of the vehicle seat includes: a cushion frame structure forming a framework of a seat cushion for supporting the thigh and the hip of a person; a seat back frame forming a skeleton of a seat back as a backrest; and a reclining mechanism for tilting the seat back frame relative to the cushion frame structure.

The cushion frame structure and the seat back frame are provided with a cushion pad, and the cushion pad is covered with a skin, thereby constituting the vehicle seat.

Further, although not shown, the seat frame is provided on the floor of the vehicle body via a pair of left and right front and rear slide rails for sliding (position adjusting) the seat frame in the front-rear direction of the vehicle body.

Fig. 17 is a perspective view of the cushion frame structure 3100, fig. 18 is a plan view, fig. 19 is a front view, fig. 20 is a rear view, fig. 21 is a left side view, fig. 22 is a sectional view taken along a line A-A of fig. 18, and fig. 23 is a sectional view taken along a line B-B of fig. 19.

In the drawings of the present embodiment, the vertical, horizontal, front-rear directions indicate directions in a state of being mounted on a vehicle. The following description will be given of each part of the cushion frame structure 3100 based on the direction in the attached state. In each figure, the front side of a seat occupant of a vehicle seat having the cushion frame structure 3100 is "front", the opposite side is "rear", the left-hand side is "left" in a forward-facing state, and the right-hand side is "right".

In the present embodiment, the joining is performed by welding in the case of being called "joining". However, joining methods other than welding may be used.

As shown in fig. 17 to 23, the cushion frame structure 3100 includes a cushion frame 3300 and a cushion cover 3200 that encloses a part of the cushion frame 3300.

The cushion frame 3300 has: the left and right cushion side frames 3310 and 3320 are arranged at a distance from each other; a rear tube frame 3330 connecting the rear sides of the left and right cushion side frames 3310, 3320; a lower pipe frame 3340 connecting lower sides of the left and right cushion side frames 3310, 3320; a front pipe frame 3350 extending forward; a pair of left and right front leg portions 3360, 3370; a pair of left and right rear leg portions 3380, 3390; a frame bracket 3400 for connecting a seat back frame not shown; mounting brackets 3410, 3420 for anchor bolts (anchor bolts); and a plurality of child seats (child seats) mounted wires 3440, 3450.

The cushion side frames 3310 and 3320, the front leg portions 3360 and 3370, the rear leg portions 3380 and 3390, the frame bracket 3400, and the mounting brackets 3410 and 3420 are formed by press working from flat plates of steel, aluminum alloy, or the like.

The rear pipe frame 3330, the lower pipe frame 3340, and the front pipe frame 3350 are formed by bending a round pipe material such as steel or aluminum alloy.

The left and right cushion side frames 3310 and 3320 each have a side wall portion which is spaced apart in the left-right direction and faces each other.

The rear pipe frame 3330 and the lower pipe frame 3340 each have a left end portion joined to the side wall portion and a right end portion joined to the side wall portion.

The cushion side frames 3310 and 3320 have top and bottom plate portions 3312 and 3322 and 3313 and 3323 at the upper and lower ends of the side wall portions, respectively.

Two mounting holes for mounting a seat back frame, not shown, are formed in the front and rear of each top plate 3312, 3322. Two mounting holes for mounting the cushion frame structure 3100 to the vehicle body are formed in the front and rear of the bottom plate portions 3313, 3323. The number of the mounting holes may be changed as needed.

The rear pipe frame 3330 extends in the left-right direction. The rear pipe frame 3330 has a substantially U-shaped mounted wire 3440 extending obliquely upward at each of the left and right ends thereof.

The attached wire 3440 is an attached member (also referred to as a lower anchor) to which an ISOFIX type child seat (not shown) supporting an ISOFIX type child seat (International Standards Organisation FIX, ISOFIX) which is an international standard specification of the child seat attachment system is attached.

The rear pipe frame 3330 has a bent portion 3331 bent gently into a crank shape on the inner side of the left and right end portions. Further, between these left and right curved portions 3331, a central portion 3332 located obliquely above the left and right end portions is provided.

A support pipe frame 3430 is provided in the central portion 3332.

The support tube frame 3430 is integrally parallel to the central portion 3332 of the rear tube frame 3330 and is located obliquely lower than the central portion 3332. Both end portions of the support tube frame 3430 are joined by extending to the center portion 3332 side.

The frame bracket 3400 has an upper end portion coupled to the central portion 3332 and a lower end portion coupled to the support tube frame 3430 so as to be suspended between the central portion 3332 and the support tube frame 3430.

A coupling hole for coupling a seat back frame, not shown, is formed in the upper end portion and the front surface portion of the frame bracket 3400.

The rear leg portions 3380 and 3390 are joined to the support pipe frame 3430 in a left-right aligned and suspended state. The rear leg portions 3380 and 3390 have a substantially horizontal bottom plate portion at a lower end portion, and mounting holes for mounting the cushion frame structure 3100 to the vehicle body are formed in the bottom plate portion.

The down tube frame 3340 extends in the left-right direction. The lower pipe frame 3340 has a bent portion 3341 gently bent in a crank shape on the inner side of the left and right end portions. Further, a center portion 3342 located above the left and right end portions is provided between the left and right curved portions 3341.

Mounting brackets 3410, 3420 are vertically supported in the central portion 3342.

The mounting brackets 3410 and 3420 each have a substantially U-shaped opening cross-section as viewed from the front, and the upper end portion is joined to the central portion 3342 with the opening portion of the opening cross-section facing upward. Two insertion holes for inserting anchor bolts are formed in the left and right sides at the bottom of the mounting brackets 3410, 3420. The number of the insertion holes may be changed as needed.

A pair of left and right mounted wires 3450 extending obliquely upward are joined to the upper side of the mounting bracket 3410 and the upper side of the mounting bracket 3420 at the central portion 3342.

The four mounted wires 3450 are identical to the previously described mounted wires 3440.

The front tube frame 3350 includes: a front frame portion 3351 extending in the left-right direction; and left and right lateral frame portions 3352, 3353 integrally connected to left and right end portions of the front frame portion 3351.

Rear end portions of the lateral frame portions 3352 and 3353 are joined to left and right end portions of the lower pipe frame 3340. The left and right lateral frame portions 3352, 3353 extend forward from the lower tube frame 3340, are bent and extend upward, and are connected at their upper ends to the front frame portion 3351.

The left and right front leg portions 3360, 3370 are respectively engaged with upwardly extending portions of the left and right lateral frame portions 3352 of the front tube frame 3350.

The front leg portions 3360 and 3370 have: a joint end portion joined to the left and right lateral frame portions 3352; an extension portion extending forward from a lower end portion of each of the joint end portions; and a bottom plate portion bent downward at a front end portion of the extension portion. Further, mounting holes for mounting the cushion frame structure 3100 to the vehicle body are formed in the respective bottom plate portions.

The cushion cover 3200 includes foamed polyurethane (EPP), and is formed over substantially the entire area corresponding to the range of the support surface in the cushion frame structure 3100 in a plan view.

The cushion cover 3200 is formed by foaming a foamed polyurethane in a state of a lower tube frame 3340 and a front tube frame 3350 of the inner bag cushion frame 3300.

The cushion side frames 3310 and 3320 are located outside the left and right side surfaces of the cushion cover 3200, respectively.

The rear pipe frame 3330 is located at the rear outside of the cushion cover 3200, and the support pipe frame 3430 and the frame bracket 3400 supported by the rear pipe frame 3330 and the rear leg portions 3380 and 3390 and the left and right mounted wires 3440 supported by the support pipe frame 3430 are also located at the rear outside of the rear pipe frame 3330.

The front tube frame 3350 is enclosed in the cushion cover 3200, but the front leg portions 3360 and 3370 provided at the front end portion of the front tube frame 3350 extend from the front end portion of the cushion cover 3200 to the outside.

Further, the down tube frame 3340 is enclosed in the cushion cover 3200, but the attached wire 3450 supported by the central portion 3342 thereof extends upward from the rear end portion of the cushion cover 3200 to the outside.

As described above, the cushion frame structure 3100 includes a cushion cover 3200 formed in a range corresponding to the support surface in plan view and including foamed polyurethane so as to support the seat cushion from below.

Therefore, the cushion frame structure 3100 can be significantly reduced in weight compared to a conventional cushion frame in which a seat cushion is supported from below by using a metal chassis frame (pan frame) or a metal spring material such as an S-shaped spring that is spread out in a planar shape.

In the cushion frame structure 3100, since the members having various functions are disposed outside the cushion cover 3200 in the cushion frame 3300, the various functions in the cushion frame 3300 are not impaired.

Further, the foaming range of the foamed polyurethane is limited by the molding tool so that members having various functions are not enclosed in the cushion cover 3200, whereby the cushion frame structure 3100 can be easily manufactured.

[ 3 ] embodiment [2] relating to Panel frame Structure

Embodiment [2] related to a panel frame structure will be described with reference to fig. 24 to 42.

The present embodiment relates to a panel frame structure, and there is industrial applicability to the panel frame structure.

[ background of the embodiment ]

Japanese patent laying-open No. 9-254689 discloses a panel frame structure for a back rest of a rear seat of a vehicle seat.

The panel frame structure is formed by compositely combining panel-shaped frames, thereby improving strength.

[ problem of the present embodiment ]

The conventional panel frame structure has room for improvement in strength of the panel frame structure.

The present embodiment has been made in view of the above-described circumstances, and an object thereof is to improve the strength of a panel frame structure.

[ means of solving the problems ]

In order to solve the above-mentioned problems,

the invention described in the solution 1 is a panel frame structure comprising

A first panel frame and a second panel frame joined in a superposed condition with the belt guide, the panel frame structure characterized in that,

the belt guide is coupled to the first and second panel frames across the first and second panel frames.

The invention described in the solution 2 is the panel frame structure according to the solution 1, characterized in that,

a reinforcement portion having a rib shape is formed on the first panel frame,

the belt guide has a portion sandwiching the bead-like reinforcing portion.

The invention described in the solution 3 is the panel frame structure according to the solution 2, characterized in that,

a plurality of reinforcement-like reinforcement portions are formed on the first panel frame.

The invention described in the solution 4 is the panel frame structure according to the solution 2, characterized in that,

the belt guide is disposed so as to sandwich the rib-like reinforcing portion with respect to the two joining portions of the second panel frame.

The invention described in the solution 5 is the panel frame structure according to the solution 4, characterized in that,

the engagement portion of the belt guide with respect to the second panel frame is disposed in alignment with a first reinforcing portion formed in the second panel frame and including a concavo-convex structure.

The invention described in the solution 6 is the panel frame structure according to the solution 5, characterized in that,

the belt guide is in a configuration disposed alongside the first reinforcing portion relative to the engagement portion of the second panel frame.

The invention described in the solution 7 is the panel frame structure according to the solution 5, characterized in that,

the belt guide is disposed in alignment with a second reinforcing portion comprising a concavo-convex structure formed on the second panel frame with respect to the other engagement portion of the second panel frame.

The invention described in the solution 8 is the panel frame structure according to the solution 7, characterized in that,

the belt guide is in a configuration disposed alongside the second reinforcing portion relative to the other engagement portion of the second panel frame.

The invention described in the solution 9 is the panel frame structure according to the solution 7, characterized in that,

The first reinforcing portion and the second reinforcing portion are arranged on the same plane.

The invention described in the solution 10 is the panel frame structure according to the solution 7, characterized in that,

the reinforcement-like reinforcement portions of the first panel frame have a shape that is arranged at least in two different directions with respect to the first reinforcement portions.

The invention described in solution 11 is a panel frame structure comprising

A first panel frame and a second panel frame joined in a superposed state, and a mounting bracket of a locking device, the panel frame structure being characterized in that,

the mounting bracket is provided to the first panel frame,

the first panel frame has a reinforcing portion including a concave-convex structure beside the mounting position of the mounting bracket.

The invention described in the solution 12 is the panel frame structure according to the solution 11, characterized in that,

a support member for supporting the headrest is provided to the first panel frame,

the reinforcement portion of the first panel frame including the concave-convex structure is disposed beside the support.

The invention described in solution 13 is a panel frame structure comprising

A first panel frame and a second panel frame joined in a superposed state, wherein the panel frame structure is characterized in that,

the first panel frame has a frame-like portion along an outer edge portion thereof, which bulges toward the front side,

the frame-shaped portion has a portion with a smaller amount of projection toward the front than other portions.

[ Effect of solution ]

In the panel frame structure according to claim 1, the belt guide is joined to the first and second panel frames across the first and second panel frames, respectively, so that when an external force is applied to the belt guide, a load can be distributed to the first and second panel frames, and the installation strength of the belt guide can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the belt guide.

Further, the belt guide spans the first panel frame and the second panel frame, and thereby the rigidity of the panel frame structure can be improved. Therefore, the functional structure required for the panel frame structure can improve the rigidity of the panel frame structure, and thus the panel frame structure can be improved in rigidity while avoiding an increase in size of the panel frame structure.

In the panel frame structure according to claim 2, the first panel frame has the rib-like reinforcing portion, and therefore the rigidity of the first panel frame can be improved. Further, since the belt guide has a portion sandwiching the reinforcing rib-like reinforcing portion, the belt guide is supported by the reinforcing rib-like reinforcing portion, and the installation strength of the belt guide can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the belt guide.

In the panel frame structure according to claim 3, since the plurality of rib-like reinforcing portions are formed in the first panel frame, the rigidity of the first panel frame can be further improved. Further, the belt guide can be supported more firmly.

In the panel frame structure according to claim 4, since the two joining portions of the belt guide to the second panel frame are disposed so as to sandwich the reinforcing rib-like reinforcing portion, the joining positions of the two joining portions to the second panel frame are reinforced by the reinforcing rib-like reinforcing portion, and the attachment strength of the belt guide can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the belt guide.

In the panel frame structure according to claim 5, the joining portion of the belt guide to the second panel frame is arranged in alignment with the first reinforcing portion including the concave-convex structure formed in the second panel frame, so that the belt guide can be joined to the periphery of the range reinforced by the first reinforcing portion and held with high strength.

Further, the first reinforcing portion can improve the rigidity of the second panel frame.

In the panel frame structure according to claim 6, the joining portion of the belt guide to the second panel frame is arranged beside the first reinforcing portion, so that the belt guide can be joined to a region further reinforced by the first reinforcing portion and held with higher strength.

In the panel frame structure according to claim 7, since the belt guide is disposed in alignment with the second reinforcing portion including the concave-convex structure formed in the second panel frame with respect to the other joint portion of the second panel frame, the belt guide can be held with high strength by being joined to the periphery of the range reinforced by the second reinforcing portion.

In the panel frame structure according to claim 8, the belt guide is arranged beside the second reinforcing portion with respect to the other joining portion of the second panel frame, and therefore the belt guide can be held with higher strength by being joined to the range further reinforced by the second reinforcing portion.

In the panel frame structure according to claim 9, the first reinforcing portion and the second reinforcing portion are arranged on the same plane, so that the rigidity of the second panel frame can be improved. Further, with this, the belt guide bonded to the second panel frame can be held with high strength.

In the panel frame structure according to claim 10, the rib-like reinforcing portions of the first panel frame are arranged in at least two different directions with respect to the first reinforcing portions, and therefore the rigidity of the panel frame structure can be improved.

In the panel frame structure according to claim 11, the first panel frame has the reinforcing portion including the concave-convex structure at the side of the mounting position of the mounting bracket of the locking device, so that the rigidity of the panel frame structure can be improved. Further, the rigidity around the mounting position of the mounting bracket is enhanced, and the joint strength of the mounting bracket can be improved.

Further, the functional structure required for the panel frame structure can improve the rigidity of the panel frame structure, and thus, the panel frame structure can be prevented from being enlarged and the rigidity of the panel frame structure can be improved.

In the panel frame structure according to claim 12, the reinforcement portion including the concave-convex structure of the first panel frame is disposed beside the support of the headrest, so that the joint strength of the support can be improved.

In the panel frame structure according to claim 13, the first panel frame has the frame-like portion that bulges toward the front side along the outer edge portion, and therefore the rigidity of the first panel frame can be improved. Further, since the frame-like portion has a portion with a smaller amount of projection toward the front than other portions, the front-rear direction can be miniaturized.

[ content of embodiment [2] related to Panel frame Structure ]

The mode for carrying out the present invention will be described below with reference to the accompanying drawings. However, the following embodiments are given by way of example only, and are not intended to limit the scope of the present invention to the following embodiments and examples.

The present embodiment is a panel frame structure to be applied to a backrest of an elongated seat for a vehicle.

Fig. 24 is a front view of the panel frame structure 4100, fig. 25 is a cross-sectional view taken along the line A-A in fig. 24, and fig. 26 is a partially enlarged view of the front surface. Fig. 27 is a partial perspective view of the panel frame structure 4100, fig. 28 is a cross-sectional view taken along line B-B in fig. 26, and fig. 29 is a partial enlarged view of the upper right portion.

In each of the drawings, each of the directions of up, down, left, right, front, and rear indicates a direction in a state of being mounted on a vehicle. The following description will be given of each portion of each panel frame structure 4100 based on the direction in the mounted state.

In addition, although the panel frame structures 4100 are mounted to the vehicle in a state in which the upper ends thereof are slightly inclined rearward, the plate surfaces of the panel frame structures 4100 are set to be along the up-down direction and the left-right direction for convenience of description unless otherwise described.

The panel frame structure 4100 is a framework of a backrest of a long seat for a vehicle. The panel frame structure 4100 is used for a backrest of a tandem seat.

A foam-molded gasket is attached to the panel frame structure 4100 so as to cover the panel frame structure 4100 from the front side, and a skin is further provided on the surface of the gasket. The sheathing means that the skin covering the surface of the pad is stretched along the surface of the pad.

[ schematic Structure of Panel frame Structure ]

As shown in fig. 24 to 29, the panel frame structure 4100 includes a front panel frame 4020 as a first panel frame, a rear panel frame 4030 as a second panel frame, installation brackets 4011 and 4012 for externally installing the panel frame structure 4100, a plurality of headrest supports 4013, a belt guide 4016, a locking member 4017, and the like.

The front panel frame 4020 and the rear panel frame 4030 are each a metal plate made of steel, aluminum alloy, or the like having a substantially rectangular plate surface shape in front view.

The front panel frame 4020 and the rear panel frame 4030 are each in front view, and have long sides along the left-right direction and short sides along the up-down direction. In the front panel frame 4020 and the rear panel frame 4030, the front side of the paper surface in fig. 24 is "front", and the opposite side is "rear".

The front panel frame 4020 is joined to the front surface side of the rear panel frame 4030.

If not mentioned, the respective structures of the panel frame structure 4100 are joined by welding, more preferably laser welding. However, a welding method other than laser welding may be used, and a joining method other than welding may be used.

[ outline of front Panel frame ]

The rear panel frame 4030 is formed with a peripheral wall-shaped flange 4301 standing forward and having a low height over substantially the entire periphery of the outer edge portion thereof. The front panel frame 4020 is joined to the front surface portion of the rear panel frame 4030 in a state of being fitted to the inner side of the flange 4301 of the rear panel frame 4030. Thus, the outer edge portion of the front panel frame 4020 is smaller than the rear panel frame 4030 by the thickness of the flange portion 4301.

Front panel frame: outer edge portion ]

The front panel frame 4020 has an outer edge portion 4021 in surface contact with the front surface of the rear panel frame 4030 over the entire periphery thereof. The rear surface of the outer edge 4021 may be integrally or partially (punctiform) joined to the front surface of the rear panel frame 4030.

Front panel frame: frame-shaped part ]

The front panel frame 4020 includes a frame-like portion 4022 that bulges toward the front side along the outer edge portion 4021, along the entire circumference of the outer edge portion 4021, immediately inside the outer edge portion 4021. The frame-like portion 4022 is separated from the front surface of the rear panel frame 4030 to form a gap space.

The frame-like portion 4022 bulges forward along four sides of a substantially rectangular shape, and includes an upper frame reinforcing portion 4221 (frame portion) corresponding to an upper side, a lower frame reinforcing portion 4222 (frame portion) corresponding to a lower side, a left frame reinforcing portion 4223 (frame portion) corresponding to a left side, and a right frame reinforcing portion 4224 (frame portion) corresponding to a right side.

Of these, the upper frame reinforcement portion 4221 and the lower frame reinforcement portion 4222 extend in the left-right direction, and the left frame reinforcement portion 4223 and the right frame reinforcement portion 4224 extend in the up-down direction.

In the following description, when referred to as "reinforcing portion", unless otherwise specified, the portion or member having rigidity higher than that of the flat plate is represented by a three-dimensional structure formed by deformation of the plate surface by a ridge, a frame, a convex portion, a bent portion, or the like.

A center extending portion 4231 described later is connected to a left-right direction center portion of the upper frame reinforcing portion 4221. A portion of the belt guide 4016 is joined to the joint portion of the central extension 4231 of the upper frame reinforcement 4221.

A mounting bracket 4011 is joined near the lower end of the left frame reinforcement 4223.

A lock member 4017 is joined to the right frame reinforcement 4224 near the upper end portion, and a setting bracket 4012 is joined to the right frame reinforcement portion near the lower end portion.

Further, in the front panel frame 4020, a corner reinforcing portion 4225 including a reinforcing rib extending in the obliquely upward left direction is formed at the upper right corner of the front panel frame 4020 to which the upper frame reinforcing portion 4221 and the right frame reinforcing portion 4224 are connected in the vicinity of the attachment position of the lock member 4017.

Front panel frame: connecting part ]

The front panel frame 4020 includes a three-fork (substantially Y-shaped) coupling portion 4023 formed in front view inside the frame-shaped portion 4022.

The connection unit 4023 includes: a diagonal extension portion 4232 extending from the right end portion of the lower frame reinforcement portion 4222 (lower right corner portion of the frame-shaped portion 4022) to the left end portion of the upper frame reinforcement portion 4221 (upper left corner portion of the frame-shaped portion 4022); and a central extension portion 4231 branched from a longitudinal direction middle portion of the diagonal extension portion 4232 to reach a lateral direction middle portion of the upper frame reinforcement portion 4221.

The frame-shaped portion 4022 is integrally coupled to the coupling portion 4023.

Each of the extending portions 4231 and 4232 has rib-like reinforcing portions 4233 to 4237 formed at both ends in the width direction (direction orthogonal to the extending direction) along the extending direction.

The central extension portion 4231 has reinforcing rib-like reinforcing portions 4233, 4234 formed on the left and right edges along the extension direction of the central extension portion 4231, respectively.

A reinforcing rib-like reinforcing portion 4235 is formed along the extending direction of the diagonal extending portion 4232 over the entire length of the diagonal extending portion 4232 at the left edge portion of the diagonal extending portion 4232.

At the right edge portion of the diagonal extension 4232, there are formed: a reinforcing rib-shaped reinforcing portion 4236 formed from the upper left end portion of the diagonal extending portion 4232 to the middle portion; and a reinforcing rib-shaped reinforcing portion 4237 formed from the right lower end portion of the diagonal extension portion 4232 to the middle portion.

The rib-like reinforcing portion 4236 is integrally connected to the rib-like reinforcing portion 4233 of the central extending portion 4231, and the rib-like reinforcing portion 4237 is integrally connected to the rib-like reinforcing portion 4234 of the central extending portion 4231.

The rib-like reinforcement 4236 is on the same line as the rib-like reinforcement 4237, but is broken by the central extension 4231.

Each of the rib-like reinforcing portions 4233 to 4237 is formed so as to be convex toward the front side on the front surface of the front panel frame 4020 and concave toward the front side on the rear surface.

The number of the rib-like reinforcing portions 4233 to 4237 may be increased or decreased. For example, the reinforcing portions 4233 to 4237 may be formed not only in the respective extending portions 4231 and 4232 but also in portions where reinforcing rib-like reinforcing portions 4233 to 4237 are not formed in inner edge portions of the opening portions 4241 to 4243 described later.

The rib-like reinforcement 4236 and the rib-like reinforcement 4237 may include a continuous single rib-like reinforcement. In this case, the two reinforcing rib-like reinforcing portions 4233, 4234 of the central extension portion 4231 may be formed to intersect with and be integrated with the continuous one reinforcing rib-like reinforcing portions 4236, 4237.

Further, at the widthwise central portion of the central extension portion 4231, an island-shaped mounting reinforcement portion 4238 is formed which is convex toward the front side on the front surface of the front panel frame 4020 and concave toward the front side on the rear surface. The attachment reinforcement 4238 is a base for attaching a retractor (not shown) for a seat belt, and a belt attachment 4239 is provided at a central portion thereof. The belt mounting portion 4239 includes a rivet-like or bolt-like member, the shaft portion protrudes forward through the mounting reinforcement portion 4238, and the head portion is engaged and fixed to the rear surface of the mounting reinforcement portion 4238. The retractor of the seat belt is fixed to the shaft portion of the belt mounting portion 4239 or the front surface of the mounting reinforcement portion 4238.

Front panel frame: opening part ]

The portions other than the connecting portion 4023 located in the inner region surrounded by the frame-like portion 4022 are three openings 4241, 4242, 4243 penetrating the plate surface of the front panel frame 4020 widely on the front and back sides.

The opening 4241 includes a substantially triangular opening surrounded by the upper frame reinforcement portion 4221, the diagonal extension portion 4232, and the central extension portion 4231.

The opening portion 4242 includes a substantially trapezoidal opening surrounded by the upper frame reinforcement portion 4221, the right frame reinforcement portion 4224, the diagonal extension portion 4232, and the central extension portion 4231.

The opening portion 4243 includes a substantially triangular opening surrounded by the lower frame reinforcement portion 4222, the left frame reinforcement portion 4223, and the diagonal extension portion 4232.

As described above, the frame-like portion 4022 of the front panel frame 4020 is separated from the front surface of the rear panel frame 4030 on the rear surface side as a whole.

As shown in fig. 24, the inner edge portions of the openings 4241 to 4243 are recessed toward the rear side and contact the front surface of the rear panel frame 4030. The inner edge portions of the openings 4241 to 4243 and the front surface of the rear panel frame 4030 may be joined together by laser welding in whole or in part (in a dot shape).

The front panel frame 4020 can be reduced in weight by the opening portions 4241 to 4243.

[ outline of rear Panel frame ]

As shown in fig. 24 to 27, the back panel frame 4030 includes a plate-like main body plate 4031 having a substantially rectangular shape in front view, and the flange 4301 integrally provided on an outer edge portion of the main body plate 4031.

The body plate 4031 is a flat plate integrally extending in the up-down-left-right direction.

Rear panel frame: opening reinforcing portion ]

In a state where the front panel frame 4020 is overlapped with the rear panel frame 4030, the body plate 4031 is formed with opening reinforcing portions 4321 to 4323 in regions inside the opening portions 4241 to 4243 of the front panel frame 4020. Each of the opening reinforcing portions 4321 to 4323 is convex toward the front from the front surface of the main body plate 4031, and concave toward the front when viewed from the rear surface.

An opening reinforcement portion 4321 (first reinforcement portion) including a concave-convex structure, which is formed in a region inside the opening 4241 having a substantially right-angled triangle shape and is bulged over the entire region having a substantially right-angled triangle shape, is formed in the main body plate 4031.

In the opening reinforcement portion 4321, three sides of the right triangle shape are respectively adjacent to three sides of the inner edge portion of the opening portion 4241 in a substantially parallel manner.

The opening reinforcement portion 4321 has a flat surface corresponding to the bulge shape of the right triangle, and a circular or substantially circular through hole 4321a is formed in the flat surface.

In the region of the main body plate 4031 which is located inside the opening 4242, an opening reinforcement 4322 (second reinforcement) is formed, and the opening reinforcement 4322 (second reinforcement) includes three elliptical extensions (i.e., a bulge) formed integrally with the upper end thereof in the vertical direction.

The opening reinforcement portion 4322 has a flat surface corresponding to the bulge shape, and a plurality of circular or substantially circular through holes 4322a are formed in the flat surface. Each through hole 4322a is formed along the three extending portions in a vertically aligned manner.

Since the opening reinforcement portion 4322 has three elliptical extending portions along the up-down direction, particularly high rigidity can be obtained for a load that is bent in a direction (left-right direction) orthogonal to the extending portions, for example.

In the main body plate 4031, an opening reinforcement portion 4323 is formed in an area inside the opening portion 4243 having a substantially rectangular triangle shape, and the entire area of the substantially rectangular triangle shape bulges.

The opening reinforcement 4323 has a right triangle shape as a whole and has only an upper end portion facing the left Fang Guchu.

The opening reinforcement portion 4323 has a flat surface corresponding to the bulge shape of the substantially right triangle, and three elliptical concave portions 4323b and right triangle concave portions 4323b are formed in the range of the bulge region of the substantially right triangle. The inner bottoms of these recesses 4323b are each flat plate surfaces identical to the flat plate surfaces of the body plate 4031. The three elliptical concave portions 4323b are gradually reduced in length from the left to the top and bottom in correspondence with the bulge shape of the substantially right triangle. The right triangular recess 4323b has a shape and a direction corresponding to the acute corner of the substantially right triangular opening reinforcement 4323.

Further, the concave portions 4323b are provided at a fixed interval with respect to the left-right direction, and a plurality of through holes 4323a are formed in a vertical arrangement at the bulge portions along the vertical direction between the concave portions 4323 b. Further, a through hole 4323a is formed in a portion of the opening reinforcement portion 4323 that bulges to the left.

Since the opening reinforcement portion 4323 has three elliptical recesses along the vertical direction, a reinforcement portion of the ridge along the vertical direction can be formed in the opening reinforcement portion 4323. This makes it possible to obtain particularly high rigidity against a load that is bent in a direction (left-right direction) orthogonal to the reinforcing portion of the ridge.

Further, since the opening reinforcing portions 4321 to 4323 are provided in the range corresponding to the reduced rigidity of the front panel frame 4020 due to the opening portions 4241 to 4243, the rigidity can be compensated for on the rear panel frame 4030 side, and the rigidity of the entire panel frame structure 4100 can be maintained high and the weight can be reduced.

Further, since the through holes 4321a to 4323a are formed in the respective opening reinforcing portions 4321 to 4323 in the range of the bulge region, further weight reduction can be achieved while suppressing a decrease in rigidity.

[ setting support ]

As shown in fig. 24, the left-side setting bracket 4011 is joined to the lower portion of the left end of the front panel frame 4020, that is, the front surface side in the lower end portion of the left frame reinforcement portion 4223, by laser welding.

The right mounting bracket 4012 is joined to a lower right end portion of the front surface of the front panel frame 4020, that is, a front surface side of a corner portion where a right end portion of the lower frame reinforcement portion 4222 and a lower end portion of the right frame reinforcement portion 4224 intersect, by laser welding.

Each of the installation brackets 4011 and 4012 is a member having a three-dimensional structure in which a metal plate having a thickness greater than that of the front panel frame 4020 or the rear panel frame 4030 is press-worked. The mounting brackets 4011, 4012 have flat plate-like extending portions extending leftward or rightward and protruding forward from the joint surface, and the male nuts 4111, 4121 are fixed to the front surfaces of the extending portions by projection welding. These male nuts 4111, 4121 are screwed with bolts for fixing when the panel frame structure 4100 is fixed to the vehicle seat.

[ conduction band apparatus ]

The belt guide 4016 guides a seat belt drawn from a retractor (not shown) attached to the attachment reinforcement 4238 of the front panel frame 4020 upward.

As shown in fig. 24 to 28, the belt guide 4016 is joined to the upper end portion of the front panel frame 4020, that is, the front surface side in the left-right direction central portion of the upper frame reinforcing portion 4221, by laser welding.

The belt guide 4016 is a member having a predetermined structure by press working a metal plate having a thickness greater than that of the front panel frame 4020 or the rear panel frame 4030.

As shown in fig. 26, the belt guide 4016 has: a pair of left and right leg portions 4161, 4162 joined to the front surface of the upper frame reinforcing portion 4221; and a pair of left and right legs 4163, 4164 extending downward along the left and right sides of the central extending portion 4231, and extending leftward and rightward at the lower end portion, respectively.

The lower end portions of the legs 4163, 4164 are joined to the rear surface of the rear panel frame 4030 via the openings 4241, 4242.

As shown in fig. 28, the belt guide 4016 has a suspension portion 4165 spanning between the left leg portions 4161, 4163 and the right leg portions 4162, 4164. The suspension portion 4165 is separated from the front surface of the upper frame reinforcing portion 4221 to form a gap. The gap functions as an insertion portion through which the webbing is inserted from below to above.

At an upper end portion of the suspension portion 4165, a guide portion 4166 is provided that is bent obliquely downward toward the front. The seat belt BS inserted from below to above inside the suspension portion 4165 is folded back in the guide portion 4166 and guided obliquely forward to the lower side.

[ locking Member ]

The locking member 4017 is a mounting bracket for mounting a locking device, not shown. The locking device is a mechanism for locking the panel frame structure 4100 in a predetermined posture (for example, a rolling state shown in fig. 24) in a state where the lower end portion of the panel frame structure 4100 is rotatably supported by the vehicle seat via a rotation shaft in the left-right direction.

As shown in fig. 24 and 29, the lock member 4017 is joined to the upper right corner of the front panel frame 4020, that is, the front surface side near the upper end portion of the right frame reinforcement portion 4224, by laser welding.

The lock member 4017 is a member having a predetermined structure formed by press working a metal plate having a thickness larger than that of the front panel frame 4020 or the rear panel frame 4030.

The lock member 4017 has a pair of upper and lower leg portions 4017a and 4017b, and the pair of upper and lower leg portions 4017a and 4017b are joined to the front surface and the outer inclined surface of the right frame reinforcement portion 4224, which are inclined forward and leftward. The upper and lower leg portions 4017a and 4017b are each formed in a curved flat plate shape so as to be closely adhered to the front surface and the inclined surface of the upper frame reinforcement portion 4221.

Further, the lock member 4017 has a right side surface portion in which a notch 4017c is formed, and the notch 4017c is used to avoid interference when a lock pin restricting rotation of the panel frame structure 4100 is inserted into the lock device from the right side.

Thus, when the lock pin is inserted into the locking device mounted to the locking member 4017, the panel frame structure 4100 can be preferably locked.

Further, a corner reinforcing portion 4225 including a reinforcing rib extending in the obliquely upward left direction is formed on the front panel frame 4020 in the left side thereof with respect to the attachment position of the lock member 4017. Therefore, the rigidity around the mounting position of the lock member 4017 on the front panel frame 4020 side is improved, and the mounting strength of the lock member 4017 can be improved.

[ support for headrest ]

As shown in fig. 24 and 27, the headrest support 4013 is joined to the upper end portion of the front panel frame 4020, that is, the left and right front surface sides of the upper frame reinforcement 4221, by laser welding in a pair.

Each support 4013 is a substantially square tubular member formed by bending a metal plate, and is attached to the front panel frame 4020 in a vertical direction. The headrest is supported with the stay inserted from above into the inside of the headrest.

The front panel frame 4020 is formed with the corner reinforcing portion 4225. The two support pieces 4013 on the right are provided with corner reinforcements 4225 adjacent thereto and adjacent thereto with respect to the mounting position thereof. Therefore, the rigidity around the mounting position of the two supports 4013 on the right side of the front panel frame 4020 is improved, and the improvement of the mounting strength of these supports 4013 can be achieved.

[ technical Effect of embodiments of the invention ]

In the panel frame structure 4100 including the above structure, the belt guide 4016 is disposed across the front panel frame 4020 and the rear panel frame 4030. Therefore, when an external force is applied to the belt guide 4016, the load can be dispersed to the front panel frame 4020 and the rear panel frame 4030, and the mounting strength of the belt guide 4016 can be maintained high. Further, the deflection of the panel frame structure 4100 can be suppressed with respect to the external force applied to the belt guide 4016.

Further, the belt guide 4016 spans the front panel frame 4020 and the rear panel frame 4030, so that the front panel frame 4020 and the rear panel frame 4030 are mutually restrained, and the rigidity of the panel frame structure 4100 can be improved. Therefore, the functional structure required for the panel frame structure 4100 can improve the rigidity of the panel frame structure 4100, and thus can improve the rigidity of the panel frame structure 4100 while avoiding an increase in the size of the panel frame structure 4100.

In the panel frame structure 4100, the legs 4161, 4162 of the belt guide 4016 are joined to the front panel frame 4020, and the legs 4163, 4164 are joined to the rear panel frame 4030.

The pair of lower legs 4163, 4164 of the belt guide 4016 have portions sandwiching the reinforcing rib-like reinforcing portions 4233, 4234 formed on the left and right sides of the central extending portion 4231 of the front panel frame 4020.

The rib-like reinforcement portions 4233, 4234 can improve the rigidity of the front panel frame 4020. Further, since the pair of lower legs 4163, 4164 have portions sandwiching the rib-like reinforcing portions 4233, 4234, the belt guide 4016 is supported by the rib-like reinforcing portions 4233, 4234, and the attachment strength of the belt guide 4016 can be maintained high. Further, the deflection of the panel frame structure 4100 can be suppressed with respect to the external force applied to the belt guide 4016.

In particular, since the pair of lower legs 4163, 4164 are joined to the rear panel frame 4030, the joining positions of the two legs 4163, 4164 to the rear panel frame 4030 are reinforced by the reinforcing rib-like reinforcing portions 4233, 4234, and the attachment strength of the belt guide 4016 can be maintained high.

Further, the leg portion 4163 of the belt guide 4016 is positioned above the opening reinforcement portion 4321 and further on the upper side with respect to the joint portion of the rear panel frame 4030, and therefore the leg portion 4163 can be joined to and held in the vicinity of the range reinforced by the opening reinforcement portion 4321 with high strength.

The joint of the leg portion 4163 may be located at any position in the vertical, horizontal, or diagonal directions with respect to the opening reinforcement portion 4321.

Further, the leg portion 4164 of the belt guide 4016 is positioned above the opening reinforcement portion 4322 and further on the upper side with respect to the joint portion of the rear panel frame 4030, and therefore the leg portion 4164 can be joined and held with high strength in the vicinity of the range reinforced by the opening reinforcement portion 4322.

The joint of the leg portion 4164 may be located at any position in the vertical, horizontal, or diagonal directions with respect to the opening reinforcement portion 4322.

Further, since the panel frame structure 4100 is formed in such a shape that the rib-like reinforcement portions 4233, 4236 of the front panel frame 4020 integrally connected together surround the opening reinforcement portion 4321 from at least two different directions in front view, the rigidity of the panel frame structure 4100 can be improved by the interaction between the rib-like reinforcement portions 4233, 4236 and the opening reinforcement portion 4321.

In the back panel frame 4030 of the panel frame structure 4100, the opening reinforcement portions 4321 and 4322, and further, the opening reinforcement portions 4323 are arranged on the same plane, so that the rigidity of the entire back panel frame 4030 can be improved. Further, with this, the belt guide 4016 or the front panel frame 4020 bonded to the rear panel frame 4030 can be held with high strength.

In the panel frame structure 4100, the front panel frame 4020 has a corner reinforcing portion 4225 including reinforcing ribs as a concave-convex structure near the attachment position of the lock member 4017, and therefore the rigidity of the panel frame structure 4100 can be improved. Further, the rigidity around the attachment position of the lock member 4017 is improved, and the joint strength of the lock member 4017 can be improved.

Further, the lock member 4017, which is a functional structure required for the panel frame structure 4100, can increase the rigidity of the panel frame structure 4100, and therefore can increase the rigidity of the panel frame structure 4100 while avoiding an increase in the size of the panel frame structure 4100.

In the panel frame structure 4100, the corner reinforcing portions 4225 of the front panel frame 4020 are disposed beside the supports 4013 of the two right side headrest, and therefore the joint strength of the supports 4013 can be improved.

[ another example of a frame-like portion of a front Panel frame ]

Fig. 30 shows another example of the frame-like portion of the front panel frame. The panel frame structure 4100 shown in fig. 30 is a panel frame structure used for a backrest of a seat of a single seat. The panel frame structure 4100 of fig. 30 is substantially the same as the panel frame structure 4100 shown in fig. 24 to 29 in terms of function, and the same reference numerals are given thereto, and overlapping description thereof is omitted.

In the panel frame structure 4100, the right frame reinforcement portion 4224 has a portion 4224a of the frame-like portion 4022 of the front panel frame 4020, which has a smaller bulge toward the front than other portions of the right frame reinforcement portion 4224.

Similarly, the lower frame reinforcement portion 4222 has a portion 4222a which has a smaller bulging amount in the forward direction than other portions of the lower frame reinforcement portion 4222.

As described above, since the front panel frame 4020 has the frame-like portion 4022 and the portions 4222a and 4224a having the smaller amount of bulging toward the front than the other portions, the rigidity of the front panel frame 4020 can be improved, and the front-rear direction can be partially reduced.

In addition, in the case of the panel frame structure 4100 shown in fig. 24 to 29, as shown in fig. 25, the bulging amount of the lower half portion toward the front is small with respect to the upper half portion of the right frame reinforcement portion 4224, and it can be said that there is a portion where the bulging amount is small, so that the same technical effects as those of the panel frame structure 4100 of fig. 30 can be obtained.

[ other examples of the connecting portion of the front Panel frame ]

The connection portion 4023 provided inside the frame-like portion 4022 of the front panel frame 4020 is not limited to a substantially Y-shaped configuration when viewed in front elevation as shown in fig. 24.

Fig. 31 to 40 show examples of various other embodiments of the coupling portion 4023 in front view.

Fig. 31 shows a connecting portion 4023 in which four extending portions connecting midpoints of adjacent sides are integrated with respect to four sides of a rectangular frame-like portion 4022. The coupling portion 4023 is also integrated with the frame-like portion 4022. The same applies to the examples of other embodiments shown below.

Fig. 32 shows a structure of a coupling portion 4023 in fig. 31, and further includes a coupling portion 4023 integrally formed by adding an extension portion for coupling the upper midpoint and the lower midpoint of a frame-like portion 4022.

Fig. 33 shows a structure of the coupling portion 4023 in fig. 31, and further includes a coupling portion 4023 integrally formed by adding an extension portion connecting the left Bian Zhongdian and right midpoints of the frame-like portion 4022.

Fig. 34 shows a structure of the coupling portion 4023 in fig. 32, and further includes a coupling portion 4023 integrally formed by adding an extension portion connecting the left Bian Zhongdian and right midpoints of the frame-like portion 4022.

Fig. 35 shows a structure of a coupling portion 4023 in fig. 31, and a coupling portion 4023 integrally formed by adding an extension portion for coupling an upper left corner portion and a lower right corner portion of a frame-like portion 4022. Further, a connecting portion 4023 may be integrally formed by adding an extending portion connecting the upper right corner and the lower left corner of the frame-like portion 4022 to the structure of the connecting portion 4023 shown in fig. 31.

Fig. 36 shows a structure of a coupling portion 4023 in fig. 35, in which an extension portion for coupling an upper right corner portion and a lower left corner portion of a frame-like portion 4022 is added and integrated.

Fig. 37 shows a coupling portion 4023 that integrates an extension portion that couples the upper left corner portion and the lower right corner portion of the frame-shaped portion 4022 and an extension portion that couples the upper right corner portion and the lower left corner portion of the frame-shaped portion 4022.

Fig. 38 shows a structure of a coupling portion 4023 shown in fig. 37, and further includes a coupling portion 4023 integrally formed by adding an extending portion connecting a crossing position of two extending portions of the coupling portion 4023 and a midpoint of an upper side of a frame-shaped portion 4022.

Fig. 39 shows a structure of a coupling portion 4023 shown in fig. 37, and further includes a coupling portion 4023 integrally formed by adding an extension portion for coupling the midpoint of the upper side of the frame-like portion 4022 and the midpoint of the lower side of the frame-like portion 4022.

Fig. 40 shows a joint 4023 in which an extension connecting the upper left corner and the lower right corner of a frame 4022 and an extension connecting the midpoint of the upper edge of the frame 4022 and the midpoint of the lower edge of the frame 4022 are integrated. In addition, the extending portion connecting the upper left corner and the lower right corner of the frame-shaped portion 4022 may be replaced by an extending portion connecting the upper right corner and the lower left corner of the frame-shaped portion 4022. Similarly, an extension portion connecting the upper midpoint of the frame-like portion 4022 and the lower midpoint of the frame-like portion 4022 may be replaced by an extension portion connecting the left midpoint of the frame-like portion 4022 and the right midpoint of the frame-like portion 4022.

The structure of the connection portion 4023 shown in fig. 40 may be further configured by adding a connection portion 4023 integrally formed by connecting an extension portion between a left middle point of the frame-like portion 4022 and a right middle point of the frame-like portion 4022.

The connection portion 4023 shown in fig. 31 to 40 may be modified so that any one of the extending portions constituting the connection portion 4023 is wider or narrower than the other extending portions. In this case, the width of one part of each extension may be further widened or narrowed than the width of the other part. In this case, when a portion of the extension portion is defined as a partition portion at a position intersecting another extension portion, it is preferable to define a range from an end portion of the extension portion to any one of the partition portions or a range from any one of the partition portions to another one of the partition portions.

Fig. 41 is a schematic view showing an example in which reinforcing portions 4401 to 4403 and 4405 to 4407 including reinforcing ribs are provided in the rear panel frame 4030 in place of the opening reinforcing portions 4321 to 4323 or in combination with the opening reinforcing portions 4321 to 4323 in the region inside the opening portion of the front panel frame 4020.

In fig. 41, the panel frame structure 4100 of fig. 39 is taken as an example, but a reinforcing portion including reinforcing ribs may be provided in the same manner as the panel frame structure 4100 of fig. 24, 31 to 38, and 40.

In the example of fig. 41, three reinforcing portions 4401 to 4403 are formed in an up-down arrangement in an opening portion on the right side of the front panel frame 4020. Three reinforcing portions 4405 to 4407 are formed in an up-down arrangement in the left opening of the front panel frame 4020.

Each of the reinforcing portions 4401 to 4403, 4405 to 4407 includes a substantially rectangular reinforcing rib having rounded corners. The reinforcing portions 4401 to 4403, 4405 to 4407 are protruded forward so that the entire front surface of the rear panel frame 4030 is protruded toward the front side and the rear surface is recessed toward the front side.

The reinforcing portions 4401 to 4403, 4405 to 4407 are formed so that the longitudinal direction thereof is substantially parallel to each of the openings around the reinforcing portions.

For example, the reinforcing portions 4401 to 4403 in the right opening of the front panel frame 4020 are each formed in parallel to the right obliquely upward direction. Further, the reinforcing portions 4401 to 4403 may be formed in parallel with the extending portions of the coupling portion 4023, for example, the extending portions of the upper right corner and the lower left corner of the coupling frame-like portion 4022.

Each of the reinforcing portions 4405 to 4407 in the left opening of the front panel frame 4020 is formed parallel to the left-right direction.

Further, in the reinforcing portions 4401 to 4403 in the right opening, the width in the longitudinal direction and the width in the short direction are all different from each other. The same applies to the reinforcing portions 4405 to 4407 in the left opening.

In the case of the reinforcing portions 4401 to 4403 in the right opening, the uppermost reinforcing portion 4401 has the longest longitudinal direction and the shortest transverse direction. The lowermost reinforcement portion 4403 has the shortest longitudinal direction and the longest lateral direction.

In the case of the reinforcing portions 4405 to 4407 in the left opening, the uppermost reinforcing portion 4405 has the shortest longitudinal direction and the longest lateral direction. Further, the second reinforcing portion 4406 is longest in the longitudinal direction and shortest in the short direction.

All the reinforcing portions 4401 to 4403, 4405 to 4407 are formed below the upper end portion of the lock member 4017.

However, all the reinforcing portions 4401 to 4403 and 4405 to 4407 may be formed above the upper end portion of the lock member 4017.

In each of the openings, the directions of the reinforcing portions 4401 to 4403 and the reinforcing portions 4405 to 4407 can be changed. For example, the inner edge portions may be parallel to the inner edge portions surrounding the openings of the reinforcing portions 4401 to 4403 or the reinforcing portions 4405 to 4407.

The length of the reinforcing portions 4401 to 4403 in the longitudinal direction and the length of the reinforcing portions 4405 to 4407 in the short direction are not limited to the above-described examples, and any reinforcing portion may be used. In this case, the reinforcement portions may be arranged in an unbiased distribution in the region corresponding to the shape of the region inside the opening. For example, if the region inside the opening is triangular, a plurality of reinforcing portions may be arranged parallel to one bottom side so that the length in the longitudinal direction becomes shorter from the bottom side toward the top corner. Alternatively, in the case of a plurality of reinforcing portions parallel to a vertical line that depends from the top corner to one bottom edge, the reinforcing portions closest to the vertical line may be arranged such that the longer side direction is longest, and the shorter the other reinforcing portions are closer to the bottom corners on both sides.

Further, the reinforcing portion including the reinforcing rib may be formed in a region inside the opening other than the left and right openings.

The reinforcing portion may be formed so as to have a direction different from the longitudinal direction of the reinforcing portion for each opening.

The number of reinforcing portions in the opening is arbitrary.

Further, the reinforcing portions 4401 to 4403 and 4405 to 4407 are exemplified as being substantially rectangular, but may be other shapes. For example, each reinforcing portion may have an elliptical shape, a circular shape, a substantially square shape, a triangular shape, or a wedge shape. Further, the shape may be long in any direction. The shape of each of the reinforcing portions 4401 to 4403 and 4405 to 4407 may be different.

Further, the reinforcing portions 4401 to 4403, 4405 to 4407 may bulge so as to protrude rearward in the same manner.

As in the example of fig. 41, even when the back panel frame 4030 is provided with the reinforcing portions 4401 to 4403 and the reinforcing portions 4405 to 4407, the rigidity of the panel frame structure 4100 can be improved.

Fig. 42 is a schematic diagram of a rear view of the back panel frame 4030 of the panel frame structure 4100 of fig. 41, with new linear reinforcing portions 4411 to 4413 added thereto.

As shown in the drawing, other reinforcing portions 4411 to 4413 may be provided in regions other than the regions in the rear panel frame 4030 where the reinforcing portions 4401 to 4403 and 4405 to 4407 are formed, for example, regions that do not overlap with the respective openings 4241 to 4243 and the coupling portion 4023 of the front panel frame 4020 (regions that are outside the respective openings 4241 to 4243 and the coupling portion 4023 and regions that overlap with the frame-like portion 4022) when the front panel frame 4020 is overlapped with the rear panel frame 4030. The other reinforcing portions 4411 to 4413 may be provided at the outer edge portion of the back panel frame 4030. Further, part or all of the other reinforcing portions 4411 to 4413 may be formed so as to intersect with the other reinforcing portions. In addition, the term "reinforcing portion is continuous" or "reinforcing portion is continuous" means that, for example, when both reinforcing portions are convex in the same direction, a convex state is maintained at the boundary thereof without interruption. There may be a step due to the difference in the protruding amounts of the two reinforcing portions.

In addition, the panel frame structure 4100 of fig. 39 is also taken as an example in fig. 42, but the reinforcing portions 4411 to 4413 may be provided in the same manner for each panel frame structure 4100 of fig. 24, 31 to 38, and 40.

The reinforcing portions 4411 to 4413 are reinforcing portions including elongated reinforcing ribs.

Each of the reinforcing portions 4411 to 4413 includes elongated wedge-shaped reinforcing ribs extending in an oblique direction which is not parallel to the left-right direction and the up-down direction. The reinforcing portions 4411 to 4413 are formed so that the entire front surface of the rear panel frame 4030 is convex toward the front side and the rear surface is concave toward the front side.

The length of each reinforcement 4411 in the longitudinal direction and the width thereof are larger than those of each reinforcement 4412, and the length of each reinforcement 4412 in the longitudinal direction and the width thereof are larger than those of each reinforcement 4413.

The plurality of reinforcing portions 4411, 4412, 4413 may be arranged in a state where reinforcing portions 4411 to 4413 of the same kind are gathered together or in a state where reinforcing portions 4411 to 4413 of the same kind are arranged in a fixed direction, respectively. The various reinforcing portions 4411 to 4413 may be mixed.

All the reinforcing portions 4411, 4412, 4413 may be aligned in the longitudinal direction, or the reinforcing portions 4411, 4412, 4413 may be aligned in the same direction. All the reinforcement portions 4411, 4412, 4413 may be oriented randomly. Further, only any of the reinforcing portions 4411, 4412, 4413 may be provided in different directions.

Any of the reinforcement portions 4411, 4412, 4413 may be disposed with respect to the mounting position of the lock member 4017 so as to be adjacent to or overlap with each other in the vertical direction, the horizontal direction, or the combined vertical and horizontal directions of the rear panel frame 4030 in front view. Thus, the rigidity around the attachment position of the lock member 4017 on the front panel frame 4020 side is improved by the rear panel frame 4030, and the attachment strength of the lock member 4017 can be improved.

The reinforcing portions 4411 to 4413 may have a long shape (for example, rectangular or elliptical shape) other than a wedge shape. The shape of each of the reinforcing portions 4411 to 4413 may be different.

Further, instead of the plurality of types of reinforcement portions 4411 to 4413, only one type of reinforcement portion may be included as in the reinforcement portions 4411 to 4413.

Further, the reinforcing portions 4411 to 4413 may bulge so as to protrude rearward in the same manner.

As in the example of fig. 42, even when the rear panel frame 4030 is provided with other reinforcing portions 4411 to 4413, the rigidity of the panel frame structure 4100 can be further improved.

Further, the flange portion 4301 is provided at the outer edge portion of the rear panel frame 4030, so that the rigidity or strength is improved in accordance with the extending direction of the flange portion 4301, but the other reinforcing portions 4411 to 4413 may be provided obliquely with respect to the outer edge portion of the rear panel frame 4030, so that the rigidity or strength can be improved in accordance with the direction different from the flange portion 4301, and the stress to the panel frame structure 4100 from more directions can be tolerated.

Further, when the other reinforcing portions 4411 to 4413 are provided so as to be inclined to the outer edge portion of the rear panel frame 4030, the bending generated at the outer edge of the rear panel frame 4030 can be suppressed, and the overall strength of the panel frame structure 4100 can be improved. In particular, since the plurality of other reinforcing portions 4411 to 4413 are provided, the strength of the outer edge of the panel frame structure 4100 can be further improved in accordance with the number.

Further, in the case where the reinforcing portions 4411 to 4413 include reinforcing portions having different extending directions, the bending can be suppressed in a plurality of directions, and the decrease in strength due to the deviation from the fixed direction can be suppressed, so that the strength of the panel frame structure 4100 can be further improved.

In addition, in the case where the other reinforcement portions 4411 to 4413 are disposed to increase rigidity other than the positions corresponding to the opening portions 4241 to 4243 of the front panel frame 4020, the bending of the whole body due to the strength decrease of the front panel frame 4020 caused by the opening portions 4241 to 4243 is suppressed, and the weight reduction can be achieved by the opening portions 4241 to 4243 without causing the strength decrease of the whole body.

When the other reinforcing portions 4411 to 4413 are formed so as to be connected to the other reinforcing portions of the rear panel frame 4030, they are integrated and reinforced over a wide range, and the strength of the panel frame structure 4100 can be improved. Further, by connecting the reinforcing portions to each other, the strength of the boundary portion of the reinforcing portion can be suppressed from decreasing.

When the other reinforcement portions 4411 to 4413 are provided in an array in any direction along the plate surface of the main body plate 4031 with respect to the lock member 4017, the periphery of the lock member 4017 of the front panel frame 4020 is reinforced by the other reinforcement portions 4411 to 4413 by the rear panel frame 4030, and the mounting strength of the panel frame structure 4100 can be improved.

[ others ]

The following structure is illustrated: the various reinforcing portions formed in the panel frame structure 4100 are each formed by deforming the plate material of the front panel frame 4020 and the rear panel frame 4030 to form convex portions or convex strips, thereby improving strength or rigidity. However, the structure of the reinforcement portion is not limited to this, and for example, a structure may be employed in which a bending portion is formed in the plate material of the front panel frame 4020 or the rear panel frame 4030 to improve strength or rigidity.

However, the above-described various reinforcing portions may be formed by joining and attaching a new member to the front panel frame 4020 or the rear panel frame 4030, but from the viewpoint of weight reduction, it is more preferable to improve strength or rigidity by changing the plate material of the front panel frame 4020 or the rear panel frame 4030.

Further, as an embodiment of the present invention, a panel frame structure 4100 used for a tandem seat having a wide width in the left-right direction is exemplified. However, the technical features of the panel frame structure 4100 may be applied to a panel frame structure for a seat of a single seat by reducing the lateral width.

Similarly, the technical features of the panel frame structure 4100 may be applied to a panel frame structure for a multi-seat having more than two persons by widening the left-right width.

The panel frame structure 4100 is illustrated as a substantially rectangular shape, but may be a substantially square shape.

[ 4 ] embodiment [3] relating to Panel frame Structure

Embodiment [3] related to a panel frame structure will be described with reference to fig. 43 to 45.

[ background of the embodiment ]

Japanese patent laying-open No. 2001-519281 discloses a panel frame structure for a back rest of a rear seat of a vehicle seat.

The panel frame structure is formed by integrally overlapping and joining a front panel-shaped frame and a rear panel-shaped frame. The front frame is formed with an embossed portion protruding toward the front side, and the rear frame is formed with an embossed portion protruding toward the rear side.

[ problem of the present embodiment ]

However, the conventional panel frame structure does not consider the mounting strength of the headrest frame mounted on the panel frame structure, and there is room for improvement.

The present embodiment has been made in view of the above-described circumstances, and an object thereof is to improve the mounting strength of a headrest frame.

[ means of solving the problems ]

In order to solve the above-mentioned problems,

the invention described in the solution 1 is a panel frame structure including:

a panel frame;

a reinforcing frame joined to a front surface side of the panel frame; and

a headrest frame, wherein the panel frame structure is characterized in that,

the headrest frame is joined to the panel frame and the reinforcement frame across the panel frame and the reinforcement frame.

the reinforcing frame has a reinforcing portion and,

the mounting portion of the headrest frame on the reinforcement frame side is joined to the reinforcement portion of the reinforcement frame.

The invention described in the solution 3 is the panel frame structure according to the solution 1 or the solution 2, characterized in that,

the panel frame

The headrest frame is provided with a reinforcing portion in a position overlapping with the mounting portion on the reinforcing frame side of the headrest frame in a direction opposite to the plate surface of the panel frame structure.

The invention described in the solution 4 is the panel frame structure according to the solution 3, characterized in that,

a through hole is formed in the reinforcement portion of the panel frame.

The invention described in the solution 5 is the panel frame structure according to any one of the solution 1 to the solution 4, characterized in that,

the panel frame has a plurality of reinforcing portions,

the panel frame-side mounting portion of the headrest frame is joined between the two reinforcement portions of the panel frame.

The invention described in the solution 6 is the panel frame structure according to any one of the solutions 1 to 5, characterized in that,

The panel frame has a reinforcing portion,

the mounting portion of the headrest frame on the panel frame side is joined in an arrangement aligned with the reinforcing portion of the panel frame.

The invention described in the solution 7 is the panel frame structure according to any one of the solutions 1 to 6, characterized in that,

the headrest frame includes a first member and a second member engaged with each other,

the first member and the second member each have a mounting portion with respect to the panel frame or the reinforcement frame.

at least one of the first member and the second member is joined to the panel frame and the reinforcement frame across the panel frame and the reinforcement frame.

The invention described in the solution 9 is the panel frame structure according to the solution 7 or the solution 8, characterized in that,

the first member and the second member are joined by laser welding.

The invention described in the solution 10 is the panel frame structure according to any one of the solution 1 to the solution 9, characterized in that,

The headrest frame is joined to the panel frame and the reinforcement frame by laser welding.

[ Effect of solution ]

In the panel frame structure of claim 1, since the headrest frame is joined to the reinforcement frame across the panel frame, when an external force is applied to the headrest frame, the load can be dispersed to the panel frame and the reinforcement frame, and the mounting strength of the headrest frame can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

In the panel frame structure according to claim 2, the mounting portion on the reinforcement frame side of the headrest frame is joined to the reinforcement portion of the reinforcement frame, so that the mounting strength of the headrest frame can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

In the panel frame structure according to claim 3, since the panel frame has the reinforcing portion in a position overlapping the mounting portion on the reinforcing frame side of the headrest frame, the mounted state can be maintained with high strength against an external force to the headrest frame. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

In the panel frame structure according to claim 4, since the through-hole is formed in the reinforcing portion of the panel frame, the strength can be maintained by the reinforcing portion, and the weight can be reduced by the through-hole.

In the panel frame structure according to claim 5, the mounting portion on the panel frame side of the headrest frame is joined between the two reinforcing portions of the panel frame, so that the mounted state can be maintained with high strength against the external force applied to the headrest frame. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

In the panel frame structure according to claim 6, the mounting portion on the panel frame side of the headrest frame is joined in an arrangement aligned with the reinforcing portion of the panel frame, so that the mounted state can be maintained with high strength against an external force to the headrest frame. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

The panel frame structure of claim 7 includes a first member and a second member that constitute a headrest frame.

Therefore, the degree of freedom in the structure of the headrest frame can be improved, for example, the first member, the second member, and the like of the headrest frame are formed in the opening cross-sectional shape in which the opening portions face each other, so that the headrest frame can be reduced in weight and the strength can be easily improved.

Further, since the first member and the second member each have the mounting portion with respect to the panel frame or the reinforcement frame, the mounting strength of the headrest frame can be maintained high.

In the panel frame structure according to claim 8, at least one of the first member and the second member is joined to the reinforcement frame across the panel frame, so that the mounting strength of the headrest frame can be maintained high. Further, the deflection of the panel frame structure can be suppressed with respect to the external force applied to the headrest frame.

In the panel frame structure according to claim 9, the first member and the second member are joined by laser welding, so that the rigidity of the entire headrest frame can be maintained high. Further, the first member and the second member are connected, whereby the attachment strength of the first member and the second member can be maintained high.

In the panel frame structure according to the solution 10, the headrest frame is joined to the panel frame and the reinforcing frame by laser welding, so that the mounting strength of the headrest frame can be maintained high.

[ content of embodiment [3] related to Panel frame Structure ]

Fig. 43 is a perspective view showing the front surface side of the panel frame structure 5100, fig. 44 is a perspective view showing the rear surface side, and fig. 45 is a partially enlarged perspective view of the panel frame structure 5100.

In each of the drawings, each of the directions of up, down, left, right, front, and rear indicates a direction in a state of being mounted on a vehicle. The following description will be given of each part of the panel frame structure 5100 based on the direction in the attached state.

In addition, although the upper end portions of the panel frame structures 5100 are mounted to the vehicle in a state of being slightly inclined rearward, the plate surfaces of the panel frame structures 5100 are set to be along the up-down direction and the left-right direction for convenience of description unless otherwise described.

The panel frame structure 5100 is for a vehicle, and is used as a framework of a backrest of a long seat. The panel frame structure 5100 is used for a backrest of a tandem seat.

A foam-molded gasket is attached to the panel frame structure 5100 so as to cover the panel frame structure 5100 from the front side. The headrest frames 5060 and 5070 of the panel frame structure 5100 described later are also attached with foam-molded cushions in a wrapping manner. The skin is then sheathed over the surfaces of these liners. The sheathing means that the skin covering the surface of the pad is stretched along the surface of the pad.

[ outline of Panel frame Structure ]

The panel frame structure 5100 includes a panel frame 5020, reinforcing frames 5040, 5050, headrest frames 5060, 5070, set brackets 5011, 5012, a striker 5013, a striker support bracket 5014, a belt guide bracket 5015, and the like.

The panel frame 5020 is a substantially rectangular metal plate made of steel, aluminum alloy, or the like, and is disposed in the vehicle seat in a state in which the vertical edges of the panel frame 5020 are oriented in the left-right direction and the left-right edges are oriented in the up-down direction, as shown in fig. 43.

[ outline of Panel frame ]

As shown in fig. 43 and 44, the panel frame 5020 is a metal plate having a substantially rectangular plate surface shape in front view.

If not mentioned in particular, the respective structures of the panel frame structure 5100 are joined by welding, more preferably laser welding. However, a welding method other than laser welding may be used, and a joining method other than welding may be used.

The panel frame 5020 is provided with a peripheral wall-shaped flange 5201 standing forward and having a low height over substantially the entire periphery of the outer edge portion thereof. In the flange 5201, only a lower right end portion of the panel frame 5020, which is a mounting position of the mount 5011 described later, and an upper end center portion through which a folded portion of the striker 5013 toward the rear passes are removed.

Further, ribs protruding toward the front side are formed at the left and right edge portions of the panel frame 5020 in the vertical direction at the corners of the root portion of the flange portion 5201. These ribs have a reinforcing structure that increases the rigidity of the panel frame 5020 together with the flange 5201.

Further, the portions of the panel frame 5020 other than the upper end portion, the lower end portion, and the right end portion are first planar portions 5021 located at the rearmost side of the panel frame 5020, and the upper end portion of the panel frame 5020 is a second planar portion 5022 located at the front side of the first planar portion 5021.

Further, the immediately lower side of the first planar portion 5021 is a third planar portion 5023 located on the front side of the first planar portion 5021, the further lower side of the third planar portion 5023 is a fourth planar portion 5024 located on the front side of the third planar portion 5023, and the right side of the fourth planar portion 5024 is a fifth planar portion 5025 located on the front side of the fourth planar portion 5024. Each of the flat portions 5021 to 5025 has a flat shape along the vertical and horizontal directions.

The term "further forward" in the first to fifth planar portions 5021 to 5025 means that the front surfaces of the first to fifth planar portions 5021 to 5025 are positioned forward than the front surfaces of the other planar portions to be compared, and the rear surfaces of the first to fifth planar portions 5021 to 5025 are also positioned forward than the rear surfaces of the other planar portions to be compared.

In the panel frame 5020, the first to fifth flat portions 5021 to 5025 and the reinforcing structure of each portion described later are formed by press working from a single flat plate, and they are integrated.

A step having a low height is formed along the boundary between the first to fifth planar portions 5021 to 5025, and the step also serves as a reinforcing structure for the entire panel surface of the panel frame 5020.

As shown in fig. 43, nine first reinforcing portions 5211 to 5219 are formed in the first planar portion 5021, each of the first reinforcing portions including a strip-shaped bulge portion extending in the vertical direction.

The first reinforcement portions 5211 to 5219 are arranged side by side in the left-right direction, and are formed in a convex shape on the front surface of the first planar portion 5021 and in a concave shape on the rear surface thereof.

The protruding height of each of the first reinforcement portions 5211 to 5218 toward the front side is equal to the third plane portion 5023, and the first reinforcement portions 5211, 5216 are continuous with the third plane portion 5023.

The term "continuous" means a state in which the plate surfaces are connected without generating a step.

The first reinforcement portions 5213, 5214, 5215, 5217, 5218 are wider in the lateral direction than the other first reinforcement portions 5211, 5212, 5216, and a plurality of circular through holes are formed in the longitudinal direction.

The first reinforcement portion 5219 located near the right end of the first flat surface portion 5021 has the widest width in the lateral direction among the first reinforcement portions 5211 to 5219, and the protruding height toward the front side is slightly higher than the first reinforcement portions 5211 to 5218. The first reinforcement portion 5219 has a flat surface that bulges forward, and the flat surface has two inner reinforcement portions 5219a in the form of ribs along the upper and lower sides. These inner reinforcement portions 5219a are formed in a concave shape at the front surface of the flat surface of the first reinforcement portion 5219 and in a convex shape at the rear surface thereof.

In the following description, when referred to as "reinforcing portion", the portion or member having rigidity higher than that of the flat plate is represented by a three-dimensional structure such as a ridge, a frame, a convex portion, and a bent portion.

As shown in fig. 44, a plurality of (five in the present embodiment) rectangular through holes 5221 for joining work are formed in the second flat surface 5022 so as to be aligned in the left-right direction.

The headrest frames 5060 and 5070, the striker support bracket 5014, and the belt guide bracket 5015 each have a mounting portion welded to the front surface side of the reinforcement frame 5040 by laser welding or the like, and the reinforcement frame 5040 is joined to the front surface side of the panel frame 5020.

In the case where these members 5060, 5070, 5014, 5015 are joined to the reinforcing frame 5040, it is preferable in terms of work efficiency to proceed from the rear of the panel frame 5020 in the same manner as in the work of joining each reinforcing frame 5040, 5050 to the panel frame 5020. However, in this case, the panel frame 5020 becomes an obstacle, and it is difficult to irradiate the joint portions between the reinforcing frame 5040 and the members 5060, 5070, 5014, 5015 with laser light.

Accordingly, the panel frame 5020 has through holes 5221 for joining work for passing laser light therethrough at positions corresponding to the joining portions of the members 5060, 5070, 5014, 5015 to the reinforcing frame 5040.

The through-hole 5221 for joining work is not limited to laser welding, and can be effectively used even when other welding is selected.

The through holes 5221 are formed in the same portions as the five second reinforcement portions 5222 formed in the second planar portion 5022.

That is, the second reinforcement portion 5222 including the convex strips along the inner edge portion of each through-hole 5221 is formed on the rear surface side of the second flat surface portion 5022. Each of the second reinforcement portions 5222 is formed so as to reach the upper end portion of the panel frame 5020.

Each of the second reinforcement portions 5222 is formed to be convex toward the rear on the rear surface of the second planar portion 5022 and concave toward the rear on the front surface. The protruding height of each second reinforcement portion 5222 toward the rear is substantially equal to the first planar portion 5021, and the lower end portion of each second reinforcement portion 5222 is continuous with the first planar portion 5021.

Each of the second reinforcement portions 5222 is formed in a peripheral wall shape in which an inner edge of the through hole 5221 is erected forward. Therefore, when the panel frame structure 5100 or the panel frame 5020 is processed, the finger is inserted into each through-hole 5221, and the finger can smoothly contact the surface of the peripheral wall.

The third flat portion 5023 is adjacent to the lower side of the first flat portion 5021 and extends in the left-right direction. A fourth flat portion 5024 located at a lower end portion of the panel frame 5020 abuts a lower side of the third flat portion 5023, and the fourth flat portion 5024 also extends in the left-right direction.

As described above, the third flat surface portion 5023 is positioned on the front side than the first flat surface portion 5021, and the fourth flat surface portion 5024 is positioned on the front side than the third flat surface portion 5023.

The boundary line between the third flat surface portion 5023 and the fourth flat surface portion 5024 extends in the left-right direction, and a plurality of (four in the present embodiment) third reinforcing portions 5231 are formed on the boundary line across the third flat surface portion 5023 and the fourth flat surface portion 5024.

Each third reinforcement portion 5231 has a rectangular structure in which an angular portion is bulged forward, and the bulged portion has a rectangular planar portion with an arc. The third reinforcement portions 5231 bulge forward of the third plane portions 5023 and the fourth plane portions 5024. Each of the third reinforcement portions 5231 is formed in a convex shape on the front surface and a concave shape on the rear surface of the third plane portion 5023 and the fourth plane portion 5024.

The left end portion of the fourth flat portion 5024 is located at the left lower corner portion of the panel frame 5020, and the width in the up-down direction is wider than other portions. A rectangular flat plate-like installation bracket 5012 is joined to the front surface side of the left end portion of the fourth flat plate 5024. The height of the front surface of the installation bracket 5012 in the front-rear direction coincides with the height of the front surface of the planar portion of each of the aforementioned third reinforcement portions 5231 in the front-rear direction.

Further, the left end portion of the reinforcing frame 5050 is joined to the front surface of the setting bracket 5012 by laser welding. Accordingly, the opening 5241 for joining the reinforcing frame 5050 to the installation bracket 5012 is formed to extend in a wide manner at the installation position of the installation bracket 5012 in the fourth plane portion 5024. The opening 5241 is substantially rectangular and smaller than the installation bracket 5012.

The fifth plane portion 5025 is located at a right lower corner portion of the panel frame 5020 and is adjacent to the right side of the third plane portion 5023 and the fourth plane portion 5024. As described above, the fifth planar portion 5025 is positioned at the forefront side of the first to fifth planar portions 5021 to 5025.

The planar bottom end of the mount 5011 is joined to the front surface side of the fifth planar portion 5025. In the installation bracket 5011, the front surface of the bottom portion has the same height in the front-rear direction as the front surface of the planar portion of each of the third reinforcement portions 5231 and the front surface of the installation bracket 5012.

Further, the right end portion of the reinforcing frame 5050 is joined to the front surface of the setting bracket 5011 by laser welding. Accordingly, the opening 5251 for joining the reinforcing frame 5050 to the installation bracket 5011 is formed to extend in a wide manner at the installation position of the installation bracket 5011 in the fifth plane portion 5025. The opening 5251 is substantially rectangular and smaller than the bottom end of the installation bracket 5011.

[ reinforcing frame ]

The reinforcing frames 5040, 5050 are metal struts formed by press working from flat plates of steel, aluminum alloy, or the like.

As shown in fig. 43, the reinforcing frames 5040, 5050 have: the reinforcing portions 5041, 5051 having an opening cross-sectional shape are elongated and have a substantially U-shaped cross-section; and a pair of flange portions 5042, 5052 formed at both end portions of the reinforcing portions 5041, 5051 on the open side. The pair of flange portions 5042, 5052 have flat portions facing the panel frame 5020, and are joined to the panel frame 5020 by laser welding in a state where the flat portions are in surface contact with each other.

The reinforcing frames 5040, 5050 are joined to the upper end and the lower end of the front surface side of the panel frame 5020 with the longitudinal direction thereof oriented in the lateral direction.

More specifically, in the reinforcing frame 5040, the flange portion 5042 on the upper side is joined to the front surface side of the second flat surface portion 5022 of the panel frame 5020, and the flange portion 5042 on the lower side is joined to the front surface side of the first flat surface portion 5021.

The flange 5042 of the reinforcing frame 5040, which is an upper side, is joined to a plurality of portions of the second flat surface portion 5022, which are located at positions avoiding the through-hole 5221 and the second reinforcing portion 5222.

The flange 5042 on the lower side is joined to a plurality of places with respect to the front surface of the first planar portion 5021 where the upper end portions of the first reinforcement portions 5211 to 5219 are not present.

The pair of flange portions 5052 of the reinforcing frame 5050 are joined to a plurality of places with respect to the front surfaces of the plurality of third reinforcing portions 5231 having the same height in the front-rear direction and the front surfaces of the mounting brackets 5011, 5012.

[ setting support ]

As shown in fig. 43, the right-side setting bracket 5011 includes: a planar bottom end portion joined to a right end lower portion of the front surface of the panel frame 5020, i.e., a front surface of the fifth planar portion 5025; and a support arm 5111 extending forward from the bottom end portion. The installation bracket 5011 is a member having a three-dimensional structure by press working a metal plate having a thickness greater than that of the panel frame 5020.

As described above, the right end portion of the reinforcing frame 5050 is joined to the front surface of the bottom end portion of the setting bracket 5011.

A support hole into which the support shaft 5112 for supporting the panel frame structure 5100 is inserted is formed in the front end portion of the support arm 5111 so as to penetrate in the left-right direction.

As shown in fig. 43, the left-side installation bracket 5012 is joined to the left-end lower portion of the front surface of the panel frame 5020, that is, the front surface side of the left end portion of the fourth planar portion 5024 by laser welding.

Further, as described above, the left end portion of the reinforcing frame 5050 is joined to the front surface of the left-side setting bracket 5012.

The setting bracket 5012 is a member including a metal plate having a thickness greater than that of the panel frame 5020. The left end portion of the front surface of the installation bracket 5012 is fixedly provided with a male nut 5121 by projection welding. The male nut 5121 is screwed with a bolt for fixing when the panel frame structure 5100 is fixed to the vehicle seat.

Headrest frame

As shown in fig. 45, each of the headrest frames 5060 and 5070 includes first members 5061 and 5071 and second members 5062 and 5072 erected toward the obliquely front upper side at the upper end portion of the panel frame 5020. The first members 5061, 5071 are located on the front side and the second members 5062, 5072 are located on the rear side. The first members 5061 and 5071 and the second members 5062 and 5072 are each formed of a metal member formed three-dimensionally by press working from a flat plate of steel, an aluminum alloy, or the like.

The first members 5061, 5071 are plate-like members extending in the standing direction, and upper ends thereof are bent rearward. The second members 5062, 5072 are plate-like members extending in the standing direction, and upper end portions thereof are bent forward. The upper ends of the first members 5061, 5071 overlap the upper ends of the second members 5062, 5072 from above, and these overlapping portions are joined and integrated by laser welding.

The first members 5061, 5071 have flange-shaped side portions 5611, 5711 extending rearward over substantially the entire length in the extending direction thereof at the left and right side ends thereof. The second members 5062, 5072 have flange-shaped side surfaces 5621, 5721 extending forward over substantially the entire length in the extending direction thereof at the left and right side ends thereof.

Accordingly, the first members 5061 and 5071 have a substantially U-shaped cross section perpendicular to the extending direction (opening cross section) with the opening portion facing rearward. In the second members 5062 and 5072, a cross section perpendicular to the extending direction has a substantially U-shape (opening cross section shape) with the opening facing forward.

In this way, the headrest frames 5060 and 5070 have a combined structure of the first members 5061 and 5071 having the open side of the open cross-sectional shape facing rearward and the second members 5062 and 5072 having the open side of the open cross-sectional shape facing forward, and the side portions 5611, 5711, 5621 and 5721 of the respective members are reinforced, so that they have high rigidity against stress in the front-rear direction.

The second members 5062, 5072 are erected in a state more nearly perpendicular to the plate surface of the panel frame 5020 than the first members 5061, 5071, and the entire headrest frames 5060, 5070 are supported by the second members 5062, 5072 against the rearward pressing force of the first members 5061, 5071, so that the headrest frames have particularly high rigidity against the rearward stress.

The first members 5061, 5071 have mounting portions 5612, 5712 at lower ends of substantially flat plate-like portions extending in the standing direction, and the mounting portions 5612, 5712 are joined to the first flat surface portions 5021 of the panel frame 5020. The first members 5061 and 5071 have a pair of left and right attachment portions 5613 and 5713, and the pair of left and right attachment portions 5613 and 5713 extend obliquely rearward and upward from the left and right side portions 5611 and 5711, and are joined at their front end portions to the front surfaces of the reinforcement portions 5041 of the reinforcement frame 5040.

In this way, the first members 5061, 5071 are joined to the panel frame 5020 and the reinforcement frame 5040 across the panel frame 5020 and the reinforcement frame 5040 in the front-rear direction.

The second members 5062, 5072 have a pair of left and right attachment portions 5622, 5722, and the pair of left and right attachment portions 5622, 5722 extend from the side portions 5621, 5721 in the extending direction of the second members 5062, 5072, and are joined at the tip ends thereof to the upper surface of the flange portion 5042 of the reinforcing frame 5040.

As shown in fig. 43, the attachment portion 5612 of the first member 5061 is joined to a position adjacent to the front surface of the first planar portion 5021 of the panel frame 5020 in the planar direction (up-down direction) of the first reinforcement portion 5213 at a position sandwiched from the left and right by the two first reinforcement portions 5212, 5214.

As shown in fig. 43, the attachment portion 5712 of the first member 5071 is joined to a position adjacent to the front surface of the first planar portion 5021 of the panel frame 5020 in the planar direction (vertical direction) of the first reinforcement portion 5218 at a position sandwiched between the two first reinforcement portions 5217 and 5219 from the left and right.

In this way, the mounting portions 5612 and 5712 are joined to the first planar portion 5021 at positions around which the first reinforcing portions 5212 to 5214 and 5217 to 5219 are formed, and therefore, even when stress is applied to the headrest frames 5060 and 5070, the bending of the panel frame 5020 can be suppressed, and the joining strength of the mounting portions 5612 and 5712 can be maintained high.

As shown in fig. 44, the left mounting portion 5613 of the first member 5061 and the left mounting portion 5622 of the second member 5062 are joined to the reinforcement frame 5040 at positions overlapping the leftmost through-hole 5221 formed in the second flat portion 5022 of the panel frame 5020 in the direction perpendicular to the plate surface of the panel frame 5020.

Similarly, the right attachment portion 5613 of the first member 5061 and the right attachment portion 5622 of the second member 5062 are joined to the reinforcement frame 5040 at positions overlapping the second through-hole 5221 formed in the second flat surface portion 5022 of the panel frame 5020 from the left in the direction perpendicular to the panel surface of the panel frame 5020.

As shown in fig. 44, the left attachment portion 5713 of the first member 5071 and the left attachment portion 5722 of the second member 5072 are joined to the reinforcing frame 5040 at positions overlapping the second through-hole 5221 formed in the second flat surface portion 5022 of the panel frame 5020 from the right in the direction perpendicular to the panel surface of the panel frame 5020.

Similarly, the right-side attachment portion 5713 of the first member 5071 and the right-side attachment portion 5722 of the second member 5072 are joined to the reinforcement frame 5040 at positions overlapping the rightmost through-holes 5221 formed in the second planar portion 5022 of the panel frame 5020 in the direction perpendicular to the plate surface of the panel frame 5020.

Each through hole 5221 has a second reinforcing portion 5222 protruding rearward along an inner edge portion thereof.

Accordingly, the left and right mounting portions 5613, 5713 of the first members 5061, 5071 and the left and right mounting portions 5622, 5722 of the second members 5062, 5072 are joined to the reinforcing frame 5040 in a configuration overlapping around the range in which the second reinforcing portion 5222 extends, and therefore, even when a pressing force, a tensile force, an impact, or the like is applied from the headrest frames 5060, 5070, the bending of the panel frame 5020 can be suppressed, and the joining strength of the mounting portions 5613, 5713, 5622, 5722 can be maintained high.

Further, since the left and right mounting portions 5613, 5713 of the first members 5061, 5071 of the headrest frames 5060, 5070 are joined to the reinforcement portion 5041 of the reinforcement frame 5040, the bending of the panel frame 5020 can be further suppressed, and the joining strength of the mounting portions 5613, 5713 can be maintained higher.

[ striker and striker support bracket ]

As shown in fig. 43, the striker 5013 is a metal member for fixing a panel frame structure 5100, which is a backrest of a long seat, to a vehicle body. Striker 5013 is formed by bending a thick wire rod including metal. The both end portions of the wire rod are joined to the striker support bracket 5014 by laser welding, and the middle portion of the wire rod having a loop shape is bent into a hook shape that is folded back rearward from the upper end portion of the panel frame 5020 and further extends downward.

The striker support bracket 5014 includes a main body portion to which the striker 5013 is coupled, and attachment portions extending in the left-right directions from both left and right ends of the main body portion. The striker support bracket 5014 is a metal member formed three-dimensionally by press working from a flat plate of steel, aluminum alloy, or the like.

The left and right mounting portions of the striker support bracket 5014 are joined to the front surface of the reinforcement portion 5041 of the reinforcement frame 5040.

As shown in fig. 44, the left mounting portion of the striker support bracket 5014 is joined to the reinforcement frame 5040 at a position overlapping the through hole 5221 formed in the center of the second flat surface portion 5022 of the panel frame 5020 in the direction perpendicular to the plate surface of the panel frame 5020.

The right-side mounting portion of the striker support bracket 5014 is joined to the reinforcement frame 5040 at a position overlapping the second through hole 5221 formed in the second flat surface portion 5022 of the panel frame 5020 in the direction perpendicular to the plate surface of the panel frame 5020.

Accordingly, since the left and right mounting portions of the striker support bracket 5014 are joined to the reinforcing frame 5040 in a configuration overlapping the range in which the second reinforcing portion 5222 extends around, even when a pressing force, a tensile force, an impact, or the like is applied from the striker 5013, the bending of the panel frame 5020 can be suppressed, and the joining strength of the mounting portions can be maintained high.

Further, since the left and right mounting portions of the striker support bracket 5014 are joined to the reinforcement portions 5041 of the reinforcement frame 5040, the deflection of the panel frame 5020 can be further suppressed, and the joining strength of the striker support bracket 5014 can be maintained higher.

[ conduction band apparatus support ]

The belt guide holder 5015 is a member that serves as a base for supporting a belt guide, not shown, of a seat belt, and includes a main body portion for supporting the belt guide, attachment portions extending in left and right directions from left and right ends of the main body portion, and attachment portions extending downward. The belt guide holder 5015 is a metal member formed three-dimensionally by press working from a flat plate of steel, aluminum alloy, or the like.

The downwardly extending mounting portion of the belt guide bracket 5015 is engaged with the front surface of the reinforcing portion 5041 of the reinforcing frame 5040.

As shown in fig. 44, the attachment portion of the belt guide bracket 5015 extending to the left is joined to the reinforcing frame 5040 at a position overlapping the second through hole 5221 formed in the second flat surface portion 5022 of the panel frame 5020 from the left in the direction perpendicular to the plate surface of the panel frame 5020.

Similarly, the attachment portion of the belt guide bracket 5015 extending in the right direction is joined to the reinforcing frame 5040 at a position overlapping the through hole 5221 formed in the center of the second flat surface portion 5022 of the panel frame 5020 in the direction perpendicular to the plate surface of the panel frame 5020.

Accordingly, the left and right mounting portions of the belt guide bracket 5015 are joined to the reinforcing frame 5040 in a configuration overlapping around the extension of the second reinforcing portion 5222, and therefore, even when a pressing force, a tension force, an impact, or the like is applied from the belt guide, the deflection of the panel frame 5020 can be suppressed, and the joining strength of the left and right mounting portions of the belt guide bracket 5015 can be maintained high.

Further, since the mounting portion of the belt guide bracket 5015 extending downward is joined to the reinforcing portion 5041 of the reinforcing frame 5040, even when a pressing force, a tension, an impact, or the like is applied from the belt guide, the bending of the panel frame 5020 can be suppressed, and the joining strength of the mounting portion extending downward can be maintained high.

[ technical Effect of embodiments of the invention ]

In the panel frame structure 5100, since the headrest frames 5060, 5070 are joined to the reinforcement frame 5040 across the panel frame 5020, when an external force is applied to the headrest frames 5060, 5070, a load can be dispersed to the panel frame 5020 and the reinforcement frame 5040, and the mounting strength of the headrest frames 5060, 5070 can be maintained high. Further, the deflection of the panel frame structure 5100 can be suppressed with respect to the external force applied to the headrest frames 5060, 5070.

In particular, the first members 5061, 5071 of the headrest frames 5060, 5070 are joined to the reinforcement frame 5040 across the panel frame 5020, and therefore the attachment strength of the first members 5061, 5071 can be maintained high.

In the panel frame structure 5100, the first members 5061 and 5071 are located on the front side, and the second members 5062 and 5072 are located on the rear side; the first members 5061, 5071 are inclined toward the rear side, and the second members 5062, 5072 are closer to the plate surface of the panel frame 5020; and a large amount of pressure applied to the headrest frames 5060 and 5070 in the rear direction, the mounting strength of the entire headrest frames 5060 and 5070 can be effectively improved due to these factors.

Further, since the headrest frames 5060 and 5070 are joined to the panel frame 5020 and the reinforcement frame 5040 by laser welding, the mounting strength of the headrest frames can be maintained higher.

In the panel frame structure 5100, the mounting portions 5613 and 5713 of the headrest frames 5060 and 5070 on the reinforcing frame 5040 side are joined to the reinforcing portion 5041 of the reinforcing frame 5040, so that the mounting strength of the headrest frames 5060 and 5070 can be maintained higher. Further, the deflection of the panel frame structure 5100 can be suppressed with respect to the external force applied to the headrest frames 5060, 5070.

Further, the panel frame structure 5100 has the second reinforcement portion 5222 in a configuration in which the panel frame 5020 overlaps the mounting portions 5613, 5713, 5622, 5722 of the headrest frames 5060, 5070 on the reinforcement frame 5040 side, and therefore the mounted state can be maintained with high strength against an external force applied to the headrest frames 5060, 5070. Further, the deflection of the panel frame structure 5100 can be suppressed with respect to the external force applied to the headrest frames 5060, 5070.

In the panel frame structure 5100, the through-holes 5221 are formed in the second reinforcing portions 5222 of the panel frame 5020, so that the strength can be maintained by the second reinforcing portions 5222 and the weight can be reduced by the through-holes 5221. The through-hole 5221 is also used for the joining work of the members 5060, 5070, 5014, 5015, and contributes to the high efficiency of the joining work.

Further, through holes are formed in the first reinforcement portions 5213 to 5215, 5217, and 5218, whereby weight reduction can be achieved by these through holes while maintaining strength.

In the panel frame structure 5100, the mounting portions 5612 and 5712 on the panel frame 5020 side of the headrest frames 5060 and 5070 are joined between the two first reinforcement portions 5212 and 5214, 5217 and 5219 of the panel frame 5020, and the mounting portions 5612 and 5712 are joined in a vertically aligned arrangement with the first reinforcement portions 5213 and 5218.

Thus, the mounted state can be maintained with high strength against the external force applied to the headrest frames 5060, 5070. Further, the deflection of the panel frame structure 5100 can be suppressed with respect to the external force applied to the headrest frames 5060, 5070.

The panel frame structure 5100 includes first members 5061 and 5071 and second members 5062 and 5072 constituting headrest frames 5060 and 5070.

Therefore, the degree of freedom in the structure of the headrest frames 5060, 5070 can be increased, for example, the first members 5061, 5071 and the second members 5062, 5072 of the headrest frames can be formed in the opening cross-sectional shapes in which the openings face each other, and the headrest frames 5060, 5070 having higher rigidity can be provided, and the headrest frames 5060, 5070 can be reduced in weight and increased in strength can be easily achieved.

The first members 5061, 5071 and the second members 5062, 5072 constituting the headrest frames 5060, 5070 are joined by laser welding, so that the joining strength can be improved and the rigidity of the entire headrest frames 5060, 5070 can be maintained high.

[ others ]

The following structure is illustrated: each reinforcement portion of the panel frame 5020 formed in the panel frame structure 5100 is formed by deforming a plate material of the panel frame 5020 to form a convex portion or a convex strip, thereby improving strength or rigidity. However, the reinforcement portion is not limited to this, and for example, a structure may be employed in which a bending portion is formed in the plate material of the panel frame 5020 to increase strength or rigidity.

However, the various reinforcement portions may be configured to join the panel frame 5020 and attach a new member, but it is more preferable to change or deform the plate material of the panel frame 5020 to increase the strength or rigidity.

Further, as an embodiment of the present invention, the panel frame structure 5100 of the long seat for the double seat having a wide left-right width is provided with two headrest frames 5060 and 5070, but the technical features of the panel frame structure 5100 may be applied to a panel frame structure of a seat for the single seat in which the headrest frame is formed in one piece and the left-right width is reduced.

Similarly, the technical features of the panel frame structure 5100 can be applied to a panel frame structure for a seat of a multi-seat of more than two persons, in which the headrest frames are more than two and the left-right width is widened.

The panel frame structure 5100 is illustrated as a substantially rectangular shape, but may be substantially square.

Industrial applicability

The present invention has industrial applicability to panel frame structures.

Description of symbols

2020: panel frame

2021 to 2024: parallel reinforcement

2025: central reinforcing part

2026. 2027: step strengthening part

2040: upper frame

2041: columnar portion

2042: flange part

2043: front surface portion

2044: bending part

2045: guide part

2050: lower frame

2051: columnar portion

2052: flange part

2060. 2070: side frame

2061. 2071: columnar portion

2062. 2072: flange part

2080: mounting bracket

2081: lower part

2082: upper part

2083 to 2086: flange part

2087: gap space

2088: bulge part

2089: side wall portion

2090: armrest support

2091: body part

2092: roundabout part

2093. 2094: arm portion

2095: reinforcing part

2100: panel frame structure

2110: locking device

2111: bolt (fixed component)

2112: nut (fixed component)

2120. 2130: corner bracket

2121: flange part

2122: flange part

2131: flange part

2132: flange part

2140: conduction band apparatus

2141: insertion part

2142: foot portion

2150: support member

2160: airbag module

2201: flange part

BS: safety belt

Claims

1. A panel frame structure comprising: a panel frame;

an upper frame coupled along an upper end portion of the panel frame;

a side frame joined along a side end of the panel frame; and

2. The panel frame structure of claim 1, wherein the mounting bracket is in a state of covering at least a portion of the upper frame.

3. The panel frame structure according to claim 1, wherein the side frames, the mounting brackets, and the upper frame have portions that overlap when viewed from the front-rear direction.

4. The panel frame structure according to claim 1, wherein a clearance space is provided between the mounting bracket and the upper frame, in which a fixing member for mounting the locking device is disposed.

5. The panel frame structure of claim 4 wherein the securing member is joined to a sidewall portion that forms the interstitial space.

6. The panel frame structure according to claim 4, wherein the mounting bracket has the clearance space inside a portion protruding in the front-rear direction.

7. The panel frame structure of claim 3 wherein the mounting bracket is coupled to at least one of the upper frame or the side frame and the panel frame.

8. The panel frame structure of claim 1 wherein a clearance space is provided between the mounting bracket and the upper frame for storing the locking device.

9. The panel frame structure according to claim 1, characterized by comprising: a handrail support supporting a handrail; and

corner brackets joined to corners of the panel frame,

10. The panel frame structure of claim 9 wherein the armrest support is coupled to the side frame or the corner support.

11. The panel frame structure of claim 9 wherein the armrest support is not engaged with either of the side frame and the corner support.

12. The panel frame structure according to claim 9, wherein the armrest bracket is shaped to avoid the side frame or the corner bracket in the front-rear direction.

13. The panel frame structure of claim 1 wherein the upper frame has an open cross-sectional shape,

14. The panel frame structure according to claim 1, wherein the upper frame or the side frame has an open cross-sectional shape,

15. The panel frame structure of claim 1, wherein the panel frame is formed with lattice-patterned reinforcing ribs.