JPH1129036A - Window frame structure for high-speed vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the productivity, flexural rigidity and fatigue strength of a window frame structure for a high-speed vehicle. SOLUTION: An internal layer 44 and an external layer 45 both constituting the external wall made of composite material of a window frame are integrally formed with an inside support part 53 and a periphery support part 55 both opening onto a windowpane fitting hole, to which a windowpane is fitted. With its periphery being supported on the inside support part 53 and the periphery support part 55, a windowpane is secured by an external pressure of a detachable presser member 58. The window frame has a sandwich structure holding a core 46 with much space therein between the internal and external layers 44 and 45 so as to have improved flexural rigidity and fatigue strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window frame of a high-speed vehicle such as a bullet train, and more particularly, to a window frame structure of a leading vehicle.

[0002]

2. Description of the Related Art FIG. 17 is a plan view of a part of a leading portion 2 of a high-speed vehicle in which a window frame portion 1 is formed by a conventional window frame structure, and FIG. 18 is a vicinity of the window frame portion 1 shown in FIG. FIG. 19 is a cross-sectional view of the window frame 3 as viewed from a section line AA in FIG. 17 and 18 show only the left half in the width direction of the vehicle body.

[0003] In a high-speed vehicle such as a Shinkansen, the leading portion 2 of the leading vehicle is used when entering a tunnel.
In order to reduce the generation of impulsive sound due to micro-pressure waves at the exit of the tunnel due to the pressure waves formed in the tunnel, the sharpened shape is formed into a streamline shape combining continuous three-dimensional curved surfaces. , It's getting complicated. In order to improve the strength, the body of such a high-speed vehicle forms an outer wall 4, also called an outer plate, by punching out a metal material such as a steel plate and an aluminum alloy plate, and extruding the outer wall 4 from steel or an aluminum alloy. The head 2 of a high-speed vehicle is manufactured by welding to a frame made of a profile.

FIG. 20 is an enlarged sectional view of section B in FIG. A window frame fitting hole 5 into which the window frame 3 is fitted is formed in the outer wall 4. The window frame 3 is fixed to the peripheral portion 6 of the outer wall 4 facing the window frame fitting hole 5. The window frame 3 is a frame body 7
And a reinforcing member 8 attached by welding to the inner peripheral surface of the frame body 7. The frame main body 7 is formed by cutting out an extruded shape member made of an aluminum alloy, and as shown in an enlarged view in FIG. 20, a first recess 9 into which the peripheral edge 6 of the outer wall 4 fits, and a second recess 9 on the back side thereof. Recess 10, frame body 7
The third recess 11 and the fourth recess
Recesses 12 are respectively formed.

A base 13 in which the third and fourth recesses 11 and 12 are formed is provided between the first recess 9 and the second recess 10.
The outer wall mounting portion 14 integrally formed with the outer wall mounting portion 14 is formed. The outer peripheral portion 6 of the outer wall 4 is disposed on the outer side of the outer wall mounting portion 14, that is, on the outer surface facing upward in FIG. 20, and a nut is provided on the inner side of the outer wall mounting portion 14, that is, on the lower inner surface in FIG. 16 are arranged. Peripheral part 6 of outer wall 4 and outer wall mounting part 1
4, a sheet-like packing 17 is arranged. The peripheral portion 6 of the outer wall 4 and the outer wall mounting portion 14 of the frame body 7 are
It is fixed watertight by a bolt 18 screwed to the nut 16. In this manner, the frame body 7 is attached to the peripheral edge 6 of the outer wall 4.

A window glass fitting hole 22 into which the window glass 21 fits is formed by the frame body 7 as described above. On the peripheral portion 23 of the window glass 21, a convex portion 24 is formed over the entire circumference in the circumferential direction. The convex portion 24 is provided in the third
It fits into the recess 11. A packing 25 made of a flexible and resilient material such as rubber and having a substantially U-shaped cross section is attached to the projection 24. Between the packing 25 and the inner peripheral surface 26 facing the third recess 11 of the frame body 7,
The cushioning material 27 and the packing 28 are interposed. Each of the packings 25 and 28 is made of synthetic rubber, and the cushioning material 27 is made of sponge rubber. With such a configuration, the window glass 21
The transmission of vibration to the window glass 21 and the displacement of the window glass 21 in the surface direction are prevented.

A packing 30 is disposed on the inside of the base portion 13 facing the third recess 11, that is, on a window glass supporting portion 29 projecting to the upper right of FIG.
Are supported. This packing 30
The packings 25 and 28 are made of the same material. A holding member 31 made of, for example, an aluminum alloy is disposed in the fourth recess 12, and the holding member 31 is fixed to the base 13 by a bolt 32. A packing 33 is interposed between the holding member 31 and the base 13. A packing 34 is interposed between the holding member 31 and the packing 25. Further, a packing 35 is interposed between the window glass support 29 and the packing 25.

A space between one end in the width direction perpendicular to the circumferential direction of the holding member 31 and the base 13 is filled with a wet sealing material 36, and the other end in the width direction of the holding member 31 and the peripheral edge 23 of the window glass 21 are filled. Is filled with a wet seal material 37, and between the peripheral portion 23 of the window glass 21 and the window glass support portion 29 of the base 13 is filled with a wet seal material 38. In this manner, the window glass 21 is attached to the window frame 3 in a watertight manner, and the window frame 3 is fixed to the outer wall 4 from the inside in a watertight manner.

[0009]

In such a conventional technique, in order to absorb a dimensional error between the window frame 3 and the window glass 21, the window frame 3 is hit with a hammer or a spot welding machine is used. Or use it to heat it locally,
Since the size of the window frame 3 is adjusted to the size and shape of the window glass 21, such a shape correcting operation is very troublesome, and the manufacturing cost is increased.

In order to solve this problem, press molding using a mold, use of NC machine tools and robots, etc., can be considered. However, high-speed vehicles such as Shinkansen are produced in a wide variety of small quantities, and especially the window frame of the leading car is shaped. Is extremely complex,
The initial investment for manufacturing increases. Therefore, in order to reduce the cost as a whole, the production of the window frame has to be mainly performed manually, and the processing operation for adapting the shape of the window frame 3 to the window glass 21 as described above. Requires much time and costs.

In order to withstand deformation due to pressure fluctuations when a high-speed vehicle passes through a tunnel, the window frame 1 is also required to have high bending rigidity. The reason why the window frame 1 is required to have high bending rigidity is that if the window frame 1 is greatly deformed, the window glass 21 may come off the window frame 1 and the deformation is not so large. However, the various packings 17, 25, 28, 3
0, 33 to 35 and the sealing materials 36 to 38 deteriorate the sealing performance, and a problem arises in that high airtightness and watertightness cannot be maintained. In order to prevent such large deformation of the window frame portion 1, a reinforcing member 8 made of an aluminum alloy is welded to the window frame frame 3. However, in order to prevent the height and width of the window frame portion 3 from buffering with internal equipment, etc. However, there is a problem that the size thereof is limited, and the window frame 3 cannot be sufficiently reinforced.

Further, since the window frame 3 is made of metal, there is a problem that, in such a portion where the stress concentration around the window is large, long-term repeated stress causes structural fatigue and cracks.

Further, since the window frame 3 is made of metal, the shape can be relatively easily changed by applying heat in the manner of spot welding as described above and utilizing the thermal strain. Is extremely bad. On the other hand, for example,
As disclosed in JP-A-345567, a honeycomb-shaped partition wall is provided between an outer wall plate made of a gas-permeable porous material having fine pores and an inner wall plate made of a material having an airtight dense structure. Although the composite material structure configured by being arranged can be processed with high precision, its shape cannot be changed after molding and curing. When joining a metal window frame to such a composite structure, it is necessary to absorb dimensional errors between the two. However, the metal window frame 3 must be adapted to the shape of the window glass 21 and it is not only necessary to correct the shape error with the composite material structure, but it is extremely difficult to eliminate both at the same time. Accompany the work. That is, the above-mentioned various packings 25, 28, 30, and 30 are used for adjusting the dimensions of the window glass 21 and the metal window frame 3.
Not only does it require spacers such as 33-35,
Dimension adjustment by the spacer such as the above-mentioned packing 17 is required between the window frame 3 and the composite material structure, and there is a problem that the manufacturing cost is increased.

When the composite material structure and the metal window frame 3 are connected by the shear bolt 18 as described above, the rigidity of the bolt joint is reduced, and the deformation of the window frame 3 is sufficiently reduced. There is a problem that it becomes difficult to suppress.

Further, the shape of the composite material structure in the vicinity of the peripheral edge 6 is a three-dimensional curved surface, and the processing thereof is complicated, so that the peripheral edge 6 to which the window frame 3 is mounted and the vicinity thereof cannot be easily reinforced. There is a problem.

Accordingly, an object of the present invention is to provide a window frame structure of a high-speed vehicle which is easy to manufacture and has high rigidity.

[0017]

According to the present invention, an inner layer and an outer layer are formed by a composite material in which a thermosetting synthetic resin is impregnated into a reinforcing material containing high-elasticity fibers,
A window glass fitting hole penetrating in the thickness direction is formed on an outer wall to which a core having a large number of spaces is fixed between the inner layer and the outer layer, and the window glass is fitted into the window glass fitting hole. A window frame structure for a high-speed vehicle that holds a peripheral portion of a windowpane, wherein the inner side support portion protrudes into the windowpane fitting hole and supports an inner surface of the peripheral portion of the windowpane, and an outer peripheral portion of the inner side support portion. And a peripheral supporting portion for supporting the outer peripheral surface of the window glass is formed integrally with the inner layer and the outer layer, and the outer wall is formed of the composite material, and the outer peripheral portion is formed of the composite material. A window frame structure for a high-speed vehicle, wherein a pressing member for pressing an outer surface of a peripheral portion of a window glass by a portion projecting into a glass fitting hole is detachably provided.

According to the present invention, the outer wall in which the window glass fitting hole is formed is formed between the inner layer and the outer layer formed of a composite material obtained by impregnating a thermosetting synthetic resin into a fiber reinforced material containing high elasticity fibers. It has a configuration in which a core having a large number of spaces is fixed, and an inner surface support portion and a peripheral edge support portion are integrally formed on these inner and outer layers. While the inner surface supporting portion supports the inner surface of the peripheral portion of the window glass, the peripheral supporting portion supports the outer peripheral surface of the window glass,
In this state, a pressing member is attached from the outside, and the outer surface of the peripheral portion of the window glass is pressed to fix the window glass. This holding member is also made of the same composite material as the inner layer and the outer layer.

Since the inner surface supporting portion, the peripheral edge supporting portion, and the holding member constituting the window frame are all made of a composite material, they can be formed with high precision, and no trouble is required in manufacturing the window frame. Further, since the inner surface support portion and the peripheral edge support portion are integrally formed with the inner layer and the outer layer,
As described in connection with the above-mentioned prior art, it is not necessary to fix the window frame 3 to the peripheral portion 6 of the outer wall 4 using a shear bolt 18 or the like. Costs can be reduced. Moreover, each of the inner surface supporting portion, the peripheral edge supporting portion and the holding member is made of a composite material, and the composite material uses a high elastic fiber as a reinforcing material and a thermosetting synthetic resin as a matrix.

By using, for example, carbon fiber as such a highly elastic fiber, even if pressure fluctuation at the time of passing through a tunnel and an impact force due to a bird collision are repeatedly applied, there is no possibility that the strength is reduced by the high elasticity. Fatigue strength against stress can be improved. In addition, since the thermosetting synthetic resin is used as the matrix, the thermosetting synthetic resin generally has low viscosity and can be reliably impregnated into the high-elasticity fiber without causing a problem that the fiber and the synthetic resin are separated. , High elastic strength can be maintained for a long time, and high bending rigidity can be achieved.

Further, since the inner surface supporting portion, the peripheral edge supporting portion and the holding member are made of a composite material, a high dimensional accuracy can be obtained, and a large dimensional adjustment by a spacer as in the prior art is not required, which also reduces the cost. Can be achieved.

According to the second aspect of the present invention, a flexible and resilient spacer is interposed between the inner surface supporting portion, the peripheral edge supporting portion and the pressing member and the peripheral portion of the window glass. Features.

According to the present invention, the spacer is interposed between the inner surface supporting portion, the peripheral edge supporting portion, the pressing member, and the peripheral portion of the window glass. As described above, since the spacer does not need to tolerate a large dimensional error due to the improvement in dimensional accuracy of the composite material, as described above, the vibration to the window glass is blocked by a relatively thin configuration to achieve watertightness and airtightness. be able to.

According to the third aspect of the present invention, the core disposed around the inner surface supporting portion and the peripheral edge supporting portion is divided at a predetermined width in a circumferential direction, and a part of the divided core is a part of the composite material. Characterized by being surrounded and fixed by a reinforcing layer comprising:

According to the present invention, the core disposed around the inner surface supporting portion and the peripheral edge supporting portion is divided from the core of the outer wall 4. A reinforcing layer made of a composite material is formed on a part of the divided core, and is reinforced in comparison with the remaining core of the outer wall 4, so that the strength of the peripheral region of the peripheral supporting portion from the inner surface supporting portion of the outer wall is improved. It can improve and obtain high bending rigidity.

According to a fourth aspect of the present invention, a bag-shaped nut is fixed to the outer wall, and the holding member is attached to and detached from the outer wall by a bolt inserted into the holding member in the thickness direction and screwed to the bag-shaped nut. It is characterized by being provided as possible.

According to the present invention, a bag-shaped nut is fixed to the outer wall, and a bolt having a pressing member inserted therein is screwed to the bag-shaped nut. When the holding member is fixed to the outer wall with the bolt in this manner, the nut to which the bolt is screwed is formed in a bag shape, so that water can be prevented from entering the core from outside through the space between the nut and the bolt. Thus, high watertightness can be achieved.

According to a fifth aspect of the present invention, the divided portion of the core is formed so as to be inclined in a direction away from the window glass fitting hole as going from the inner surface to the outer surface in the thickness direction.

According to a sixth aspect of the present invention, in the part of the divided core, an end near the window glass fitting hole is separated from the window glass fitting hole in the thickness direction from the outer surface to the inner surface in the thickness direction. It is formed to be inclined in the direction.

According to the present invention, the division of the outer wall into a part of the core and the remaining part is formed so as to be inclined in the direction away from the window glass fitting hole in the thickness direction from the inner surface to the outer surface. When heating and pressurizing the outer wall together with the window frame to form the autoclave, the autoclave pressure acts from the inside to the outside in the thickness direction of the core, but by inclining the divided portion, a part of this pressure is Can be used as a molding pressure from the remainder to a part. Therefore, the rest of the core is firmly pressed by a part of the core, wrinkles and slippage are prevented, and a sufficiently reliable structure as a composite material can be realized.

[0031]

FIG. 1 is an enlarged sectional view showing a window frame structure according to an embodiment of the present invention, taken along a line II in FIG. 2, and FIG. It is a perspective view which shows the left half structure 42 of the front-end | tip part 41 of the high speed vehicle with which a frame structure is implemented. The structure 42 of the head 41 of a high-speed vehicle such as a bullet train
The inner layer 44 and the outer layer 45 are formed of a composite material in which a thermosetting synthetic resin is impregnated into a reinforcing material containing a high elastic fiber, and a core 46 having a large number of spaces is fixed between the inner layer 44 and the outer layer 45. It has an outer wall 47. A window glass fitting hole 48 is formed in the outer wall 47 so as to penetrate in the thickness direction which is the vertical direction in FIG. 1. The window glass 49 is fitted in the window glass fitting hole 48 in a state where the window glass 49 is fitted. It is configured to hold the peripheral edge portion 50.

The outer wall 47 is divided into a plurality of parts such as a driver's cab part, a ceiling part, a snow plow part, and a coupler cover, and is manufactured to constitute the structure 42.

Each prepreg constituting the outer layer 45 and the inner layer 44 is made of a fiber-reinforced thermosetting synthetic resin. For example, carbon fiber or aramid fiber is impregnated in unsaturated polyester, phenol resin, polyimide resin or epoxy resin. It has a configuration. The embodiment of the present invention has a configuration in which a heat-curable epoxy resin is impregnated with carbon fibers. Carbon fibers are more preferable than aramid fibers from the viewpoint of strength. Each prepreg is obtained by impregnating a woven fabric such as a plain weave or a satin weave made of one selected from the group consisting of carbon fiber, glass fiber and aramid fiber with a thermosetting synthetic resin as described above. It is. Thus, the direction in which the warp yarns of the plurality of layers of the prepreg sequentially stacked from bottom to top are sequentially changed in the thickness direction by 45 degrees. The outer layer 45 having the prepreg composed of a plurality of layers heat-fused and thermoset in this manner has a substantially isotropic tensile strength.
The inner layer 44 also has the same configuration as the outer layer 45.

The core 46 is made of a hard foam synthetic resin.
As the rigid foam synthetic resin, for example, polymethacrylimide is suitably used. This polymethacrylimide has higher mechanical strength such as tensile strength, compressive strength, elastic modulus, and shear strength as compared with other synthetic resin foams, and particularly has excellent properties at low temperatures, and further has heat resistance, Excellent solvent resistance and heat insulation.

The outer wall 47 has an inner surface support portion 53 projecting into the window glass fitting hole 48 and supporting the inner surface 52 of the peripheral edge portion 50 of the window glass 49, and from the base end of the inner surface support portion 53 to the outside of the vehicle. A peripheral edge supporting portion 55 that extends substantially perpendicularly and supports the outer peripheral surface 54 of the window glass 49 is formed integrally with the inner layer 44 and the outer layer 45 in a continuous manner. The outer wall 47 also includes a pressing member 58 made of the above-described composite material and pressing the outer surface 57 of the peripheral portion 50 of the window glass 49 by a portion 56 projecting from the peripheral supporting portion 55 into the window glass fitting hole 48.
Is detachably attached by a bag nut 61 and a bolt 62.

FIG. 3 is a sectional view showing a specific configuration of the bag-shaped nut 61. As shown in FIG. The cap nut 61 is formed by a flange 63 engaged on the outer surface of the outer layer 45, an annular guide 64 expanding toward the flange 63, and a three-dimensionally connected axially to the guide 64. A caulking portion 65 protruding outward in the radial direction at an axial one end opposite to the flange 63 with respect to the portion 64, and an inner screw 66 is formed on an inner peripheral surface of the caulking portion 65 in an axial direction. And an end wall 68 that closes one end of the screw portion 67 in the axial direction. Such a bag nut 61 is made of stainless steel or steel.

FIG. 4 is a sectional view showing a procedure for attaching the bag-shaped nut 61 to the outer layer 45. The above bag-shaped nut 61
When attaching to the outer layer 45, first, a hole 69 (see FIG. 4 (2)) into which the bag-shaped nut 61 can be inserted to the vicinity of the flange 63 is formed on the outer layer 45 side by a drilling tool such as a drill. As shown in (1), the bag-shaped nut 61 is mounted on a tool 70 mounted on a chuck 71 of a drill having an outer thread engraved on the outer peripheral surface, and FIG.
As shown in (2), the inner periphery of the flange 63 is formed at the base end of the tool 70 in a state where the tool 70 is screwed into the screwing portion 67 of the bag-shaped nut 61 by driving the chuck 71 to rotate. The ribs 72 are tightened until they come into contact with the contact surfaces 73 of the plurality of ribs 72 to be inserted into the holes 69 formed in the outer wall 47.

Next, as shown in FIG. 4 (3), by rotating the tool 70, the caulking portion 65 is deformed and caulked so as to protrude radially outward, and the outer layer 45 is joined to the flange 63 and the caulking portion. 65. That is, the swaged portion 65 is formed thinner than the screwed portion 67, and the screwed portion 67 is axially compressed in a direction approaching the flange 63 by the rotation of the tool 70, and the swaged portion 65 is moved outward in the radial direction. Flange 63 while bending toward
The hole 69 of the inner layer 45 protrudes until it
Is pressed in a direction approaching the flange 63, and the bag-shaped nut 61 is fixed in a state of being embedded in the outer wall 47 in this manner. Thereafter, as shown in FIG. 4 (4), the tool 70 is pulled out from the bag nut 61 by rotating in the reverse direction, and as shown in FIG.
The shaft portion of the bolt 62 is inserted into the bolt insertion hole 75 formed in the above, and is screwed and screwed to the screwing portion 67 of the bag-shaped nut 61, and the pressing member 58 is attached to the outer wall 47. As described above, since the pressing member 58 is detachably attached to the outer wall 47 by the bolt 62, the window glass 49 can be easily replaced from the outside.

Such a bag-like nut 61 and bolt 6
2 are alternately provided in a plurality of rows (two rows in the present embodiment) at intervals in a circumferential direction perpendicular to the paper surface of FIG. The row of the bag-shaped nuts 61 and bolts 62 close to the window glass and the outer row have an interval of about 20 mm in the width direction (left-right direction in FIG. 1), and have an interval of 75 to 150 mm in the circumferential direction. They are provided in a zigzag pattern. In this manner, the bag-shaped nut 61 and the bolt 62 are staggered at intervals in the circumferential direction and the width direction.
As shown in FIG. 1, the effective cross section of the outer layer 45 and the pressing member 58 is not reduced, and the reduction in strength due to the formation of the insertion holes of the bag-shaped nut 61 and the bolt 62, particularly the reduction in bending rigidity, is prevented. Can come off. By using the bag-shaped nut 61 in this manner, rainwater or washing water is prevented from entering the inside of the core 46 from the outside, and watertightness is achieved.

As described above, the inner surface support portion 53, the peripheral edge support portion 55, and the portion 56 of the pressing member 58 form the concave groove 76 into which the peripheral edge portion 50 of the window glass 49 fits. As described above, since the pressing member 58 is detachably provided on the outer wall 47 by the bag-shaped nut 61 and the bolt 62 as described above, by removing the pressing member 68, the concave groove 76 is moved outward (see FIG. 1). Facing upward)
The window glass 49 can be easily replaced. Between the peripheral edge portion 50 of the window glass 49 and the inner surface support portion 53, the peripheral edge support portion 55, and the portion 56 of the pressing member 58, there are first and second flexible and resilient synthetic rubbers. Fourth packings 77 to 80 are interposed. These first to fourth packings 77 to 80 constitute a spacer.

The first packing 77 has a substantially U-shaped cross section perpendicular to the longitudinal direction, and is mounted over the entire periphery of the peripheral portion 50 of the window glass 49 in the circumferential direction. A second packing 78 is disposed on a surface of the inner surface support portion 53 facing the peripheral portion 50 of the window glass 49, and a third packing 79 is provided on a surface of the peripheral support portion 55 facing the peripheral portion 50 of the window glass 49. A fourth packing 80 is disposed on the surface of the portion 56 of the holding member 58 facing the peripheral portion 50 of the window glass 49.
Is arranged. A first wet seal material 81 is filled between the distal end of the inner surface support portion 53 and the peripheral edge portion 50 of the window glass 49, and the space between the portion 56 of the pressing member 58 and the peripheral edge portion 50 of the window glass 49 is provided. The second wet seal material 82 is filled, and the third wet seal material 83 is further filled between one end in the width direction of the pressing member 58, that is, between the left end portion in FIG. These first to third wet sealing materials 81 to 83
Thereby, high airtightness and watertightness are achieved.

Of the core 46 interposed between the inner layer 44 and the outer layer 45, the inner surface support 53 and the peripheral support 5
The core 46a disposed around the periphery 5 is divided into a predetermined width in the circumferential direction, and a part 46a of the divided core 46 is
The composite material is surrounded and fixed by a reinforcing layer 86. By such a reinforcing layer 86, the strength of the part 46a of the divided core is remarkably improved. The specific configuration of such a part 46a of the core will be described later in detail with reference to FIGS.

The core 46 and a divided part 46 which is a part thereof
is divided into the inner surface 8 in the thickness direction.
8 is formed in a direction away from the window glass fitting hole 48 toward the outer surface 89, that is, inclined to the left in FIG. 1. Thus, the contact area between the core portion 46a and the remaining portion 46b of the core 46 can be increased, thereby reducing the stress transmitted from the window frame side core portion 46a to the remaining portion 46b. Can be. The outer wall 4
7 is heated and pressed together with the window frame 43 to form an autoclave, the autoclave pressure acts from the inside to the outside in the thickness direction of the core, but by inclining the divided portion 87, a part of this pressure is reduced. The rest of the core 4
It can be used as a molding pressure from 6b to a part 46a. For this reason, the remaining portion 46b of the core is firmly pressed by the portion 46a of the core, wrinkles and slippage are prevented, and a sufficiently reliable structure as a composite material can be realized.

The end 46 of the core 46a near the window glass fitting hole 48 is inclined in a direction away from the window glass fitting hole 48 from the outer surface 88 to the inner surface 89 in the thickness direction. It is faced. Thereby, the window glass 49
The periphery of the peripheral portion 50 is neat when viewed from the indoor side, so that unnecessary space can be reduced as compared with the case where the core portion 46a has almost the same thickness, and the appearance of the interior is improved. Can be. This is important in that the driver's cab of the leading vehicle of the Shinkansen eliminates the oppressive feeling caused by the surroundings of the peripheral portion 50 of the window glass 49 protruding into the cabin to the crew, and obtains a wide field of view. .

FIG. 5 is a sectional view of the pillar 98 taken along the line VV of FIG. 2, and FIG. 6 is a sectional view taken along the line VI-V of FIG.
FIG. 3 is a cross-sectional view of the pillar 98 as viewed from I. Window frame 4 mentioned above
The pillars 98 provided on the left and right sides over the upper limit part 96 and the lower edge part 97 of the third member are formed of a reinforcing material containing high-elasticity fibers.
An outer peripheral layer 99 formed of the same composite material as the window frame 43 and the outer wall 47 impregnated with a thermosetting synthetic resin;
And a core 100 having a large number of spaces arranged and fixed in the outer peripheral layer 99, and having window glasses 49a and 49b (subscripts a and b omitted when collectively referred to) arranged on both left and right sides. And an intermediate member 102 made of a stainless steel solid rod which is fixed to the pillar main body 101 from the outside between the respective window glasses 49a and 49b and is more rigid than the pillar main body 101.
And the intermediate member 102 is fixed to the intermediate member 102 from the outside.
A pressing member 103 that presses the side edges of the window glasses 49a and 49b arranged so as to sandwich the “02” from both right and left sides onto the pillar main body 101 to be sandwiched. Holding member 10
3 is composed of a composite material.

A plurality of bolt insertion holes 104 are formed in the intermediate member 102 at intervals in the longitudinal direction. A cap nut 105 having the same configuration as the cap nut 61 shown in FIG.
Is fixed. An intermediate member fixing bolt 106a is inserted into the bolt insertion hole 104 of the intermediate member 102 and screwed to the cap nut 105. Thus, the intermediate member 102
Are fixed to the pillar body 101. A bolt insertion hole 107 is formed in the holding member 103. Intermediate member 1
02, a plurality of screw holes 10 in which internal screws are engraved on the inner peripheral surface at positions shifted in the longitudinal direction from the bolt insertion holes 104.
8 are formed. The holding member fixing bolt 106 b is inserted into the bolt insertion hole 107 and screwed into the screw hole 108 of the intermediate member 102, thus fixing the holding member 103 to the intermediate member 102.

As described above, the first to fourth packings 77 to 80 are provided on the peripheral portion 50 of each of the window glasses 49a and 49b. These first to fourth packings 77 to
By virtue of 80, the vibration or impact transmitted from the pillar body 101, the intermediate member 102 and the holding member 103 to each of the window glasses 49a and 49b can be reduced, and watertightness can be achieved. Intrusion of water into the interior where 101 is arranged can be blocked.

The pillar body 101 has its inner (lower side in FIGS. 5 and 6) corners chamfered at approximately 45 ° symmetrically with respect to one vertical plane 109 including the central axis, and inclined portions 110 are formed.
a, 110b are formed. These inclined portions 110a,
With 110b, a wide field of view can be obtained when viewing the outside from the inside. On the inner surface of the pillar body 101, a decorative sheet 111 for an inner layer may be directly attached. Peripheral portion 50 of each window glass 49a, 49b
And the space between both ends of the pressing member 103 in the width direction (left and right directions in FIGS. 5 and 6) and the vicinity thereof are filled with wet sealing materials 112a and 112b, respectively, to achieve watertightness and airtightness. ing.

FIG. 7 is a front view of the pillar body 101 shown in FIGS. 5 and 6, and FIG. 8 is a side view of the pillar body 101 as viewed from below in FIG. Pillar body 101
As described above, the inner corners are chamfered to form the inclined portions 110a and 110b. Pillar body 1
01 on the inner side at both ends in the longitudinal direction, that is, on the side facing the crew cabin, the gently sloped angle θ1, θ2 with respect to the flat inner surface 113 toward the outside in the longitudinal direction. 2 inclined portions 114a, 114b
Is formed. Further, on the outer side at both ends in the longitudinal direction of the pillar body 101, third inclined portions 116a inclined at angles θ3 and θ4 with respect to the flat outer surface 115,
116b is formed. The second inclined portion 114a, 1
The angles θ1 and θ2 of 14b are selected to be, for example, about 15 °. Further, the angle θ3 of the third inclined portions 116a and 116b,
θ4 is selected to be, for example, 45 °. Each third inclined portion 1
16a and 116b are supported by the upper edge 96 and the lower edge 97 of the above-described window frame 43, respectively.

FIG. 9 is a cross-sectional view of the pillar main body 101 taken along the line IX-IX of FIG. Pillar body 101
Has a configuration in which the core 100 is surrounded by the outer peripheral layer 99 as described above. The core 100 is made of a hard thermosetting foamed synthetic resin. As the hard thermosetting foamed synthetic resin, the above-mentioned polymethacrylimide is used. Further, the outer peripheral layer 99 is formed of a laminated structure obtained by winding a plurality of sheets of the composite material, that is, the prepreg 118, and performing autoclave molding. The prepreg 118 is
Both end portions are overlapped on the inner surface side, so that the laminating pressure is increased and a large size is formed. This is because of a large strength against bending stress such that the inside becomes tensile and the outside is compressed in response to a pressure fluctuation from the outside. Outer peripheral layer 99 formed by a plurality of such prepregs 118
Has about half the density of aluminum alloys and is relatively light in weight.

The pillar body 1 made of such a composite material
01 is increased to a size corresponding to the position where the inner layer decorative panel is to be provided, and the above-described decorative sheet 111 is attached to the inner surface of the pillar main body 101, thereby improving the bending rigidity of the pillar main body 101. In addition to this, the manufacturing cost and the mounting cost can be reduced as compared with the case where the decorative panel is provided, and the economic efficiency is improved. Further, since the pillar body 101 is made of a fiber reinforced composite material, it is not possible to form the inclined portions 110a and 110b by chamfering the inner corners as described above, and further forming the corners into rounded shapes. It is easy and requires less processing cost than when processing a metal such as an aluminum alloy. Therefore, a design close to the shape of the conventional metal interior decorative panel can be easily realized at low cost.

Further, by increasing the cross-sectional shape of the pillar body 101, the thickness of the outer peripheral layer 99 can be reduced, so that the number of plies (stacking number) of the prepreg 118 can be reduced, and the mechanical strength can be reduced. The material cost and the number of steps can be reduced without lowering.

Further, according to the above configuration, the gap between the left and right window glasses 49a and 49b is filled with the intermediate member 102 made of a solid metal bar, and the holding member 103 is fixed thereto by the mounting bolt 106b. Thereby, the width of the pillar 98 can be made as small as possible, a wide field of view can be obtained from the inside to the outside, and the field of view of the crew can be improved widely.

Further, the pillar body 101 is made of a composite material.
Although it is conceivable that the intermediate member 102 and the intermediate member 102 are integrally formed, this not only makes processing difficult, but also makes it difficult to mount the above-mentioned holding member mounting bolt 106b, and increases the width of the pillar body 101 in terms of strength. I have to. Therefore, the pillar body 1 made of a composite material
It is reasonable to adopt a configuration in which a metal intermediate member 102 is combined with 01 in that there is no need to increase the width of the pillar body 101. If the width of the pillar main body 101 is widened, the field of view when viewing the outside from the inside is narrowed as described above, and the field of view of the crew is obstructed, but according to the above configuration, the field of view of the crew is widened. can do.

Further, the outer peripheral layer 99, and thus each prepreg 118, can use a highly elastic fiber such as carbon fiber and aramid fiber as a reinforcing material, so that the fatigue strength can be remarkably increased. Thus, the problem of structural fatigue due to repeated loads due to the above can be solved.

The pressing member 103 is made of a composite material obtained by impregnating a matrix made of a thermosetting synthetic resin into the fiber reinforced material containing the above-described high elasticity fiber. Each of the window glasses 49a and 49b is attached by the holding member 103 so as to be sandwiched between the pillar body 101 and the window glass 49a, 49b.
Since the holding member 103 is attached so as to be detachable from the outside by the bolt 106a, the window glass 49 is provided.
The window glasses 49a and 49b can be easily attached and detached, and the window glasses 49a and 49b can be easily replaced.

As described above, the window frame 43 and the outer wall 4
In the case where 7 is made of a composite material, the pillar body 101 is formed of the same composite material, so that the difference in the coefficient of thermal expansion is small, the mounting structure is simple, the manufacturing is easy, and the assembling work is also easily performed. Can be. In addition, the metal pillar is almost the same as the conventional one in which a solid rod and a reinforcing plate are welded, and the rigidity is high even though the external shape is small. In order to secure the same rigidity with a fiber reinforced composite material with the same outer dimensions as such a metal pillar, even if a highly elastic fiber reinforced material such as carbon fiber is used, the structure will be large in thickness. Is not rigid enough and difficult to manufacture,
By using a combination of the pillar body 101 made of a fiber-reinforced composite material and the intermediate member 102 made of stainless steel, required rigidity can be obtained, and the external shape does not become excessively large, so that a wide field of view can be secured.

Further, since the pillar 98 has high bending stiffness, it is possible to prevent a large deformation due to a pressure fluctuation at the time of passing through the tunnel, and to prevent each window glass 49a, 49b from being deformed.
Is prevented from coming off. Further, even if the deformation is not so large, the problem that the airtightness and the watertightness between the pillar 98 and each of the window glasses 49a and 49b are reduced is prevented.

FIG. 10 is a sectional view showing a mounting structure of the pillar 98 to the window frame 43. FIG. 11 is a sectional view taken along a line XI of FIG.
It is sectional drawing seen from -XI. The aforementioned pillar 98 is attached to the window frame 43. As mentioned in connection with FIG.
A portion of the core of the window frame 43 of the sandwich structure, that is, a portion of the core 46a disposed near the window glass fitting hole 48, on a portion on an extension of the pillar body 101, has a greater rigidity than the core portion 46a. A pair of reinforcing members 121a and 121b made of a composite material, which is a high material, is buried, and is orthogonally connected to each of the reinforcing members 121a and 121b, and is provided on a support surface 122 of the window frame 43 that supports the pillar body 101. A partition wall 123 extending along is embedded.

The reinforcing members 121a and 121b are arranged at the same interval as the width of the pillar 98 in the direction in which the part 46a of the core extends, that is, in the direction perpendicular to the plane of FIG. Three or more such reinforcing members 121a and 121b may be provided as necessary. Corner end reinforcing sheets 124a and 124b made of a composite material are attached to and integrated with both ends in the longitudinal direction of the pillar body 101, and both ends in the longitudinal direction of the pillar body 101 are connected to the window frame 43.
The upper edge 96 and the lower edge 97 are integrated and fixed respectively.

FIG. 12 is a diagram for explaining a state of transmission of a bending load from the pillar main body 101 to the outer reinforcing member 121a. When a bending moment M is generated in the pillar main body 101 to be bent inward due to the impact of the impact force due to the passage of a tunnel or a bird collision, couple forces F1 and F2 are generated at both ends in the longitudinal direction of the pillar main body 101 by the bending moment M. Occurs. The region where such couples F1 and F2 occur is a region embedded in the window frame 43,
Shear stress is generated at both longitudinal ends of the pillar body 101 by the couples F1 and F2. Such shear stress acts on the support surface 122 of the window frame 43 as a pressing force.
The support surface 122 is formed to be inclined as described above, and the third inclined portions 116a and 116b of the pillar body 101 abut on the inclined support surface 122. Therefore, the shear load is applied in the thickness direction of the window frame 43. And transmitted in a dispersing manner in the extending direction. Such a shear load acting on the window frame 43 is transmitted to the pressing member 103, and the pressing force to the outside of the pressing member 103 is transmitted to the intermediate member 102 via the cap nut 105 and the bolt 106 to be applied, and the moment is applied. M is opposed by the pillar body 101 and the intermediate member 102. This bending moment M causes the pillar body 101 to move.
Since the inner region is a tensile region, a thick region 118a in which the vicinity of both ends of a plurality of prepregs 118 is stacked as shown in FIG. 9 is formed, and a large compressive strength is used to resist the bending moment M. It is configured to be able to.

FIG. 13 is a diagram for explaining a state of transmission of a bending load from the pillar main body 101 to the holding member 103. When a bending moment M similar to that described above acts on the pillar body 101, the inside (the right side in FIG. 13) becomes a compression region, and the outside becomes a tension region. In such a tension region, as described above, the holding member 103 is fixed by the plurality of bolts 106, and each bolt 1
06 exerts a tensile force. In order to resist such a pulling force, the base end 127 of the holding member 103 is fixed to the window frame 43 by a plurality of bolts 128. Base 1
27 is wider than the holding portion 129 connected thereto, and can distribute the tensile force to the window frame 43 by dispersing.

FIG. 14 is a diagram for explaining a state of transmission of a bending load from the pillar main body 101 to each of the corner portion reinforcing sheets 124a and 124b. When the shear force H acts on the pillar body 101 due to the pressure fluctuation at the time of passing through the tunnel or the impact force due to the bird collision, a shear stress is generated in the pillar body 101. In order to reduce such shearing stress, it is necessary to transmit and disperse the shearing force H from the pillar body 101 to the window frame 43. For this purpose, the above-described corner portion reinforcing sheets 124a and 124b are provided. The corner frame reinforcing sheets 124a and 124b allow the window frame 4 to extend from both ends in the longitudinal direction of the pillar body 101.
3 is transmitted to the pillar body 101 without fail.
And the cross-sectional shape of the pillar body 101 can be reduced.

FIG. 15 is a flowchart showing the procedure for manufacturing the window frame 43 and the pillar 98, and FIG. 16 is a diagram showing the procedure for manufacturing the window frame 43 and the pillar 98. The work is started, and a jig is prepared in step a1.
A plurality of prepregs 118 that form the outer layer 45 with FIG.
The window glass fitting hole 48 is laminated as shown in (1).
A core stacking portion 131 having a triangular cross section is placed on a portion where the part 46a of the core to be located is disposed. On the core stacking portion 131, the pillar 98 and the window frame 43 are connected. Is mounted.

In step a3, as shown in FIG. 16 (2), a plurality of prepregs 119 are added to a part 46a of the core.
Is wound, and as shown in FIG. 16 (3), stacked so that both ends overlap the inner region. Step a4
The remaining portion 46b of the core 46 is placed on a plurality of prepregs 118 for forming the outer layer 45 stacked on the jig in FIG.
As shown in (4), the pillars 101 are placed on the pillar joining sheet 132 where the part 46a of the core manufactured in step a3 is stacked and the window frame 43 is formed. The corner part reinforcing sheet 124 (subscripts a and b are omitted when generically referred to) is further placed.

Next, in step a6, as shown in FIG. 16 (5), a plurality of prepregs 13 forming the inner layer 44 are formed.
In addition to stacking 0, the pillar bonding sheet 133 for bonding the pillars inside is stacked, drilling, mounting and finishing of the bag-shaped nut 61 are performed, and autoclave molding is performed to complete the manufacturing operation.

As described above, since the pillar 98 is attached to the window frame 43, the out-of-plane force of each of the window glasses 49a and 49b is applied as a shear load from the pillar 98 via each of the corner portion reinforcing sheets 124 and the like. 43, but can be diffused into the core 46, the inner layer 44 and the outer layer 45 by the reinforcing members 121a and 121b and the partition 123 embedded therein, thereby reducing the load on the pillar 98 and its mounting portion. Can be. The moment load of the pillar 98 is directly transmitted to the inner layer 44 and the outer layer 45 via the corner reinforcing sheet 124 on the inner surface of the pillar, and is transmitted to the inner layer 44 and the outer layer 45 by the pressing member 103 on the outer surface of the pillar. It is natural as a transmission path of, and can stably disperse and absorb, and can resist external force.

Further, although the load concentrates on the end portion of the holding member 103, the width can be widened at the base end of the holding member 103, so that a sufficient number of bolts 128 can be hit, 98 can be connected to the window frame 43 with great strength.

Since the transmission of the force between the pillar 98 and the window frame 43 is transmitted by the in-plane stress such as the shearing force and the tensile force of the composite member, each corner portion made of the thin composite material as described above is transmitted. Reinforcement sheets 124a, 124
b and the pillar joining sheet 130 can be joined without difficulty. When connecting with metal fittings as in the past, the bending moment and shear force are transmitted simultaneously by one fitting, so that the strength of the fitting is increased. However, in the present embodiment, the bending moment and shearing force are increased. Since a path for individually transmitting each force component of the force is formed, the force can be transmitted by a lightweight and thin member, whereby each window glass 49a, 49b and the pillar 98 interfere with a mounting bracket or the like. No problems occur.

The pillar body 101 and the reinforcing members 121
a, 121b, partition 123, each corner portion reinforcing sheet 12
4a, 124b and the pillar bonding sheet 132, etc.
Since it is formed of a composite material containing high-elasticity fibers, it has high fatigue strength and can achieve sufficient strength against structural fatigue that cannot be prevented by a metal structure.

[0071]

According to the first aspect of the present invention, the outer wall in which the window glass fitting hole is formed is formed of a composite material obtained by impregnating a fiber-reinforced material containing highly elastic fibers with a thermosetting synthetic resin. A core having a large number of spaces is fixed between the inner layer and the outer layer to be formed, and an inner surface supporting portion and a peripheral edge supporting portion are integrally formed on the inner layer and the outer layer. The inner surface supporting portion supports the inner surface of the peripheral portion of the window glass, and the peripheral supporting portion supports the outer peripheral surface of the window glass. In this state, a pressing member is attached from the outside to press the outer surface of the peripheral portion of the window glass. And fix the window glass. This holding member is also made of the same composite material as the inner layer and the outer layer.

As described above, since the inner surface supporting portion, the peripheral edge supporting portion, and the holding member that constitute the window frame are all made of a composite material, they can be molded with high precision, and no trouble is required in manufacturing the window frame. Further, since the inner surface support portion and the peripheral edge support portion are integrally formed with the inner layer and the outer layer,
As described in connection with the above-mentioned prior art, it is not necessary to fix the window frame 3 to the peripheral portion 6 of the outer wall 4 using a shear bolt 18 or the like. Costs can be reduced. Moreover, each of the inner surface supporting portion, the peripheral edge supporting portion and the holding member is made of a composite material, and the composite material uses a high elastic fiber as a reinforcing material and a thermosetting synthetic resin as a matrix.

By using, for example, carbon fiber as such a high elastic fiber, even if the pressure fluctuation at the time of passing through the tunnel and the impact force due to bird collision repeatedly act, the strength is not reduced by the high elasticity. Fatigue strength against stress can be improved. In addition, since the thermosetting synthetic resin is used as the matrix, the thermosetting synthetic resin generally has low viscosity and can be reliably impregnated into the high-elasticity fiber without causing a problem that the fiber and the synthetic resin are separated. , High elastic strength can be maintained for a long time, and high bending rigidity can be achieved.

Further, since the inner surface supporting portion, the peripheral edge supporting portion and the holding member are made of a composite material, a high dimensional accuracy can be obtained, and a large dimensional adjustment by a spacer as in the prior art is not required. Can be achieved.

According to the second aspect of the present invention, the spacer is interposed between the inner surface supporting portion, the peripheral edge supporting portion, the pressing member, and the peripheral portion of the window glass. As described above, since the spacer does not need to tolerate a large dimensional error due to the improvement in dimensional accuracy of the composite material, as described above, the vibration to the window glass is blocked by a relatively thin configuration to achieve watertightness and airtightness. be able to.

According to the third aspect of the present invention, the core disposed around the inner surface supporting portion and the peripheral edge supporting portion is divided from the core of the outer wall 4. A reinforcing layer made of a composite material is formed on a part of the divided core, and is reinforced in comparison with the remaining core of the outer wall 4, so that the strength of the peripheral region of the peripheral supporting portion from the inner surface supporting portion of the outer wall is improved. It can improve and obtain high bending rigidity.

According to the fourth aspect of the present invention, a bag-shaped nut is also fixed to the outer wall, and a bolt having a pressing member inserted therein is screwed to the bag-shaped nut. When the holding member is fixed to the outer wall with the bolt in this manner, the nut to which the bolt is screwed is formed in a bag shape, so that water can be prevented from entering the core from outside through the space between the nut and the bolt. Thus, high watertightness can be achieved.

According to the fifth and sixth aspects of the present invention,
Since the divided portion of the outer wall, which is part of the core and the remaining portion, is formed to be inclined in the direction away from the window glass fitting hole in the thickness direction from the inner surface to the outer surface, the outer wall is heated and heated together with the window frame. When autoclave molding is performed by pressing, the autoclave pressure acts from the inside to the outside in the thickness direction of the core, but by inclining the division, a part of this pressure is reduced to the molding pressure from the rest of the core to a part. Available as Therefore, the rest of the core is firmly pressed by a part of the core, wrinkles and slippage are prevented, and a sufficiently reliable structure as a composite material can be realized.

[Brief description of the drawings]

FIG. 1 shows a window frame structure according to an embodiment of the present invention, and FIG.
FIG. 2 is an enlarged cross-sectional view taken along line II-II of FIG.

FIG. 2 is a perspective view showing a left half structure 42 of a head portion 41 of a high-speed vehicle in which the window frame structure shown in FIG. 1 is implemented.

FIG. 3 is a cross-sectional view showing a specific configuration of a bag-shaped nut 61.

FIG. 4 is a cross-sectional view showing a procedure for attaching the bag-shaped nut 61 to the outer wall 47.

FIG. 5 is a cross-sectional view of the pillar 98 taken along the line VV of FIG. 2;

FIG. 6 is a view showing a pillar 98 viewed from a section line VI-VI in FIG. 2;
FIG.

FIG. 7 is a front view of the pillar main body 101 shown in FIGS. 5 and 6;

8 is a side view of the pillar main body 101 as viewed from below in FIG.

FIG. 9 is a cross-sectional view of the pillar body 101 taken along the line IX-IX of FIG.

FIG. 10 is a sectional view showing a mounting structure of the pillar 98 to the window frame 43.

FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 10;

FIG. 12 is a diagram for explaining a state of transmission of a bending load from the pillar main body 101 to the window frame attachment portion.

FIG. 13 is a view for explaining a state of transmission of a bending load from the pillar main body 101 to the pressing member 103.

FIG. 14 is a view for explaining a state of transmission of a bending load from the pillar body 101 to each of the corner portion reinforcing sheets 124a and 124b.

FIG. 15 is a flowchart showing a manufacturing procedure of the window frame 43 and the pillar 98.

FIG. 16 is a diagram illustrating a manufacturing procedure of the window frame 43 and the pillar 98.

FIG. 17 is a plan view of a part of a leading portion 2 of a high-speed vehicle in which a window frame 1 is formed by a conventional window frame structure.

18 is a side view of the vicinity of the window frame 1 shown in FIG.

FIG. 19 is a cross-sectional view of the window frame 3 taken along the line AA in FIGS. 17 and 18;

20 is an enlarged sectional view of section B in FIG.

[Explanation of symbols]

41 Top part 42 Structure 43 Window frame 44 Inner layer 45 Outer layer 46, 46a, 46b Core 47 Outer wall 48 Window glass fitting hole 49, 49a, 49b Window glass 50 Peripheral part of outer wall 47 51 Peripheral part of window glass 49 52 Inner surface 53 Inner surface Supporting portion 54 Outer peripheral surface 55 Peripheral supporting portion 56 Projecting portion 57 Outer surface 58, 103 Holding member 61 Bag-shaped nut 62 Bolt 63 Flange 77-80 Packing 81-83 Sealing material 86 Reinforcement layer 87 Dividing portion 96 Upper edge 97 Lower edge Part 98 pillar 99 outer peripheral layer 100 core 101 pillar main body 102 intermediate member 110a, 110b, 114a, 114b, 116a,
116b Inclined part 121a, 121b Reinforcement member 122 Support surface 123 Partition wall 124a, 124b Corner part reinforcement sheet 127 Base end part 129 Holding part 132 Pillar joint sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiro Hirata 1 Kawasakicho, Kakamigahara-shi, Gifu Prefecture Kawasaki Heavy Industries Gifu Plant Co., Ltd. (72) Inventor Osamu Ishizuka 2-1-1 Wadayama-dori, Hyogo-ku, Kobe-shi, Hyogo Prefecture No. Kawasaki Heavy Industries, Ltd. inside the Hyogo Plant

Claims (6)

[Claims] An outer wall in which an inner layer and an outer layer are formed by a composite material in which a thermosetting synthetic resin is impregnated into a reinforcing material containing high elasticity fibers, and a core having a large number of spaces between the inner layer and the outer layer is fixed. A window glass fitting hole penetrating in the thickness direction thereof, and a window frame structure of a high-speed vehicle that holds a peripheral portion of the window glass in a state where the window glass is fitted into the window glass fitting hole. An inner surface support protruding into the window glass fitting hole and supporting the inner surface of the peripheral portion of the window glass; and an outer peripheral portion of the inner surface support bent and extended outward from the vehicle to support the outer surface of the window glass. A peripheral support portion is formed integrally with the inner layer and the outer layer so as to be continuous with the outer layer. Detachable holding member for pressing Window frame structure of a high speed vehicle, characterized in that provided on. 2. A flexible and resilient spacer is interposed between the inner surface supporting portion, the peripheral edge supporting portion and the pressing member and the peripheral edge portion of the window glass.
The window frame structure of the high-speed vehicle according to the description. 3. A core arranged around the inner surface supporting portion and the peripheral edge supporting portion is divided at a predetermined width in a circumferential direction, and a part of the divided core is surrounded by the reinforcing layer made of the composite material. The window frame structure for a high-speed vehicle according to claim 1, wherein the window frame structure is fixed. 4. A bag-shaped nut is fixed to the outer wall, and the holding member is detachably provided on the outer wall by a bolt inserted into the holding member in a thickness direction thereof and screwed to the bag-shaped nut. The window frame structure for a high-speed vehicle according to claim 1. 5. The high-speed vehicle according to claim 3, wherein the divided portion of the core is formed to be inclined in a direction away from the window glass fitting hole as going from the inner surface to the outer surface in the thickness direction. Window frame structure. 6. A part of the divided core is formed so that an end near a window glass fitting hole is inclined in a direction away from the window glass fitting hole in a thickness direction from an outer surface to an inner surface in a thickness direction. The window frame structure for a high-speed vehicle according to claim 3 or 5, wherein: