JP6505564B2 - Frame unit - Google Patents

Description

  The present invention relates to a frame unit provided with a cross frame, a lateral frame and a reinforcement.

  BACKGROUND ART Conventionally, in a frame unit, a technique is known in which a reinforcing material is fixed to the inside of a side frame to which a lateral frame is connected. For example, Patent Document 1 discloses this type of technology. In Patent Document 1, one side recess and the other side recess are respectively formed on the one side longitudinal plate and the other side longitudinal plate of the vertical frame material, and the end of one side piece of the reinforcing member is fitted into the one side recess. The art concerning the reinforcement structure which inserts the end of piece into the other side crevice is indicated.

JP-A-9-125827

  In the reinforcing structure disclosed in Patent Document 1, in addition to the need to form a recess into which the end portion of the reinforcing material is inserted inside the facing, an auxiliary structure for fixing the reinforcing material is provided. . For example, in the first embodiment of Patent Document 1, it is necessary to form an intermediate connection plate on which the screw is screwed in order to support the reinforcing material. In the second embodiment, it is necessary to bend the auxiliary fin piece using a tool such as a driver to fix the reinforcing material. In any of the embodiments, there is a need for a structure for supporting the reinforcing material in an auxiliary manner, and there is room for improvement in terms of simplifying the structure of the frame and facilitating the work of assembling the frame unit.

  An object of this invention is to provide the frame unit of a simple structure which can do easily the operation | work which fixes a reinforcement to the inner side of a square.

  According to the present invention, there is provided a weft having a hollow inside (for example, a weft 23 described later) and a plurality of lateral frames connected to the side of the weaver and having a hollow inside (for example, a sta A frame unit (for example, a sash unit 1 described later) including an upper frame 21, a blind 24 and a baseboard 22), and a reinforcing material (for example, a reinforcing material 9 described later) disposed inside the square. The plurality of horizontal frames are an upper frame (for example, an upper frame 21 described later) connected to the upper part of the square and a lower frame (for example, a cross section 22 described later) connected to the lower part. At least including, the reinforcing material extends from a position corresponding to the upper frame to a position corresponding to the lower frame, and penetrates the reinforcing material at a position corresponding to the upper frame on the inner side of the square. An upper fastening member (for example, a screw 90a described later) reaching the hollow portion of the upper frame A lower fastening member (for example, a screw 90b described later) reaching the hollow portion of the lower frame in a state in which the reinforcing member is penetrated at a position corresponding to the lower frame inside the square, The present invention relates to a frame unit fixed to the inside of the side stand.

  The lateral frame has a position in a probable direction with respect to a fastening position of the upper fastening member (for example, fastening position 91a described later) or a fastening position of the lower fastening member (for example, fastening position 91b described below) or both. The reinforcing member is connected to the side surface of the birch by a lateral frame fastening member (for example, screws 83a to h described later) penetrating the side surface of the birch at different positions, and the reinforcing member is the lateral member of the lateral frame fastening member. It is preferable to be fixed to the above-mentioned squarer inside the part (for example, head 831a, 831b, 831e of the below-mentioned) which remains inside.

  ADVANTAGE OF THE INVENTION According to this invention, the frame unit of the simple structure which can do easily the operation | work which fixes a reinforcement to the inner side of a square can be provided.

It is the figure which looked at the sash unit which concerns on one Embodiment of this invention from indoor side. It is a longitudinal cross-sectional view of the sash unit of this embodiment. It is an expanded cross-sectional view of the sash unit of this embodiment. It is a longitudinal cross-sectional view of the bridge which shows the fastening position of the reinforcing material of this embodiment. It is a longitudinal cross-sectional view of the square which shows the fastening position of the reinforcing material of a modification.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present specification, “finding direction” refers to the longitudinal direction (that is, glass) of the horizontal frame (upper frame, blind, cross-hatched part, etc.) of the sash unit contained in the opening formed in the building. Or in-plane direction of shoji, "probable direction" means indoor / outdoor direction (that is, depth direction).

  FIG. 1 is a view of the sash unit 1 according to the present embodiment as viewed from the indoor side. FIG. 2 is a longitudinal cross-sectional view of the sash unit 1 and is a cross-sectional view taken along the line AA of FIG. In FIG. 2, the left side of the drawing is the outdoor side, and the right side is the indoor side.

  As shown in FIG. 1, the sash unit 1 is used in a building such as a store, and is a frame unit provided with a frame 2 attached to an opening formed in the building.

  The frame 2 includes an upper frame 21, a base 22 as a lower frame, vertical frames (not shown) on both left and right sides, a bridge 23, and a blindness 24. The frame 2 is in the form of a rectangle as a whole. The inner space of the frame 2 is divided into a plurality of openings in the finding direction by the cross 23 and each of the plurality of openings is divided in the vertical direction by the blind 24. The FIX window 61 is accommodated in the partitioned upper opening, and the FIX window 62 is accommodated in the lower opening.

  As shown in FIG. 2, the upper frame 21 extends from the upper frame main body portion 211 to the outdoor side from an upper frame main body portion 211 which is disposed in the indoor side and has an approximately U-shaped cross section opened upward. An upper frame glass holding portion 212 and an upper frame extending portion 213 extended from the upper frame glass holding portion 212 to the outdoor side are provided.

  The upper frame main portion 211 is provided with groove portions 211 a and 211 b which are formed inside and extend in the longitudinal direction of the upper frame 21. The groove portions 211 a and 211 b are disposed at the lower portion inside the upper frame main portion 211. Each of the groove portions 211a and 211b serves as a screw receiver into which screws 83a and 83b for connecting the bridge 23 are inserted from the bridge 23 side in the direction of detection (see FIG. 4).

  The upper frame glass holding portion 212 is formed with a groove 212 a for holding the upper end portion of the glass 61 a constituting the FIX window 61.

  The blind 24 is a blind main body 241 which is a hollow structure disposed on the indoor side and has a hollow portion, a blind glass holder 242 extending from the blind main body 241 to the outdoor side, and blind glass And a glass holding member 243 engaged with the holding portion 242.

  The blind main portion 241 includes grooves 241 a, 241 b and 241 c which are formed inside and extend in the longitudinal direction of the blind 24. The groove portion 241 a is disposed at the upper portion inside the blind main portion 241, and the groove portion 241 b is disposed at the lower portion inside. The groove portion 241 c is disposed at an inner upper corner of the indoor side. The grooves 241a, 241b, and 241c serve as screw receptacles into which screws 83c, 83d, and 83e for connecting the bridge 23 from the bridge 23 side in the finding direction are inserted (see FIG. 4).

  The eyeless glass holding portion 242 is formed with a groove 242 a for holding the upper end portion of the glass 62 a constituting the FIX window 62. A fitting portion 242 b for fitting the glass holding member 243 is formed on the outdoor side of the upper portion of the blind glass holding portion 242.

  The glass holding member 243 is fitted to the fitting portion 242 b. The blind 24 and the glass holding member 243 form a groove 243 a for holding the lower end portion of the glass 61 a.

  The glass 61 a is a single plate glass and is held between the upper frame 21 and the blind 24. The holding of the glass 61a will be described. The glass 61a is supported from below by a support member 61b disposed inside the groove 243a. The lower end portion of the glass 61a is sandwiched by the backup members 61c and 61c in the groove 243a. Further, sealing materials 61d, 61d are applied above the backup materials 61c, 61c. The upper end portion of the glass 61a is sandwiched by the backup members 61f and 61f in the groove 212a. Furthermore, below the backup materials 61f, 61f, sealing materials 61e, 61e are applied.

  The base part 22 includes a base main body 221 having a hollow structure and a hollow structure, and a glass holding member 222 engaged with the base main body 221.

  On the indoor side of the core-timber portion 221, there are formed an inclined portion 221a inclined so as to approach the indoor side as it moves downward from above, and a screw attachment portion 221b extending downward from the lower end of the inclined portion 221a. .

  At the lower end on the outdoor side of the core-tack main body portion 221, a fitting portion 221c to be fitted to an auxiliary frame 25 described later is formed. A fitting portion 221 d to which the glass holding member 222 is fitted is formed at the upper end on the outdoor side of the baseboard body portion 221.

  Grooves 221 e, 221 f, and 221 g extending in the longitudinal direction of the base part 22 are formed inside the base main body part 221. The groove portion 221e is disposed at the inner upper end on the indoor side, and the groove portion 221f is disposed between the groove portion 221e on the inner side and the screw attachment portion 221b. The groove portion 221g is disposed at the lower portion inside. The grooves 221e, 221f, and 221g are screw receptacles into which screws 83f, 83g, and 83h for connecting the bridge 23 from the side of the bridge 23 in the finding direction are inserted (see FIG. 4).

  The glass holding member 222 is fitted to the fitting portion 221 d. A groove 222a for holding the lower end portion of the glass 62a is formed by the baseboard body portion 221 and the glass holding member 222.

  The glass 62 a is a single plate glass and is held between the blind 24 and the base wood 22. The holding of the glass 62a will be described. The glass 62a is supported from below by a support member 62f disposed inside the groove 222a. The lower end portion of the glass 62a is sandwiched by the backup members 62g and 62g in the groove 222a. Further, sealing materials 62h and 62h are applied above the backup materials 62g and 62g. The upper end portion of the glass 62a is sandwiched by the backup members 62j and 62j in the groove 242a. Furthermore, sealing materials 62i and 62i are applied below the backup materials 62j and 62j.

  The upper frame 21, the blindness 24 and the base part 22 described above can be formed, for example, by extruding aluminum. Next, the auxiliary frame 25 to which the core part 22 is fixed will be described.

  The auxiliary frame 25 is an auxiliary frame main body 251 having a substantially U-shaped cross section which is attached to the anchor 26 and is opened downward, and a packing member 252 disposed between the baseboard main body 221 and the auxiliary frame main body 251. And.

  The auxiliary frame main body 251 is formed with claws 251 a that are bent inward at the lower open ends thereof, and these claws 251 a are inserted into the anchors 26.

  The outdoor surface 251b of the auxiliary frame main body 251 extends from the lower end to the upper side, and then inclines to the indoor side when it reaches the installation line L on the outdoor side, and extends to the upper side again.

  In the upper part of the outdoor surface 251b of the auxiliary frame main body 251, a plug-in portion 251c extending to the outdoor side is formed. The insertion portion 251 c is a portion to be fitted to the fitting portion 221 c of the base body 221. The insertion portion 251c of the present embodiment is formed so as to extend in the horizontal direction to the outdoor side, and then once incline upward and extend in the horizontal direction again. A gap 251 d is formed between the upper surface of the insertion portion 251 c and the lower surface of the core body 221.

  The indoor surface 251e of the auxiliary frame main body 251 is formed to extend upward from the lower end to the upper end. Further, a rising portion 251f that is bent upward after being extended to the indoor side is formed at the top of the indoor surface 251e. The rising portion 251 f is formed to face the screw attachment portion 221 b in a state in which the core wood portion 22 is attached to the auxiliary frame 25. An attachment hole (not shown) for attaching the screw 253 is formed in the rising portion 251f.

  Further, the auxiliary frame main body portion 251 is formed with a groove portion 251 g which is formed inside and extends in the longitudinal direction of the auxiliary frame main body portion 251.

  The packing member 252 is disposed in the gap 251 d between the auxiliary frame 25 and the base portion 22. The packing member 252 is a so-called dry packing. The packing member 252 is formed in a flat and elongated shape, and is fixed to the auxiliary frame 25 in a state where the longitudinal direction of the packing member 252 is in the direction of finding.

  Next, the method 23 will be described. FIG. 3 is an enlarged cross-sectional view of a bridge 23 provided in the sash unit 1 of the present embodiment. In FIG. 3, the appearance of the inside of the upper frame 21 as well as the inside of the bridge 23 is shown. Further, in FIG. 3, the upper side of the drawing is the outdoor side, and the lower side is the indoor side. FIG. 4 is a vertical cross-sectional view of a straight line showing the fastening positions 91a and 91b of the reinforcing material 9 of the present embodiment, and is a cross-sectional view taken along the line B-B of FIG.

  The ridge 23 constitutes a longitudinal member of the FIX window 61 and the FIX window 62. As shown in FIG. 3, the gutter 23 includes a first gutter member 231 disposed on the right side and a second gutter member 232 disposed on the left side as viewed from the indoor side.

  The first side member 231 is provided on the outdoor side of the first side body portion 311 and the first side body portion 311, and the left side end portion of the glass 61a viewed from the indoor side is inserted and held. And a first holding portion 312 in which the groove 312d is formed.

  The first rectangular main body portion 311 includes a convex portion 311 a formed so as to protrude toward the second rectangular member 232 around a hole in which a screw 90 a to be described later is screwed. The tip end surface of the convex portion 311 a faces the reinforcing material 9.

  The first holding portion 312 is a first direction expected portion 312 a extending from the first side body portion 311 in the direction expected (the outdoor side), and a viewing direction from the tip of the first direction expected portion 312 a A first method standing portion 312b extending to the right when viewed from the side and a side opposite to the extending direction of the first method standing portion 312b from the tip of the first method potential portion 312a (left side when viewed from the indoor side) And a protruding portion 312c).

  The first side possibility portion 312a is provided with a convex portion 312e which is formed so as to project toward the second side member 232 around a hole in which a screw 82 described later is screwed.

  The second side member 232 is provided on the outdoor side of the second side body portion 321 and the second side body portion 321, and the side end portion on the right side as viewed from the indoor side of the glass 62a is inserted and held. And a second holding portion 322 in which the groove 322c is formed.

  The second holding portion 322 is a second direction expected portion 322a extended from the second direction main body portion 321 in the expected direction (outdoor side) and a finding direction from the tip of the second direction expected portion 322a (indoor side) And a second method standing portion 322b extended to the left side).

  The second side expected portion 322a is formed so as to protrude toward the first side erecting member 231 around a recess 322d formed on the first side erecting member 231 side and a hole engaged with a screw 82 described later. And a convex portion 322e. The airtight member 315 is accommodated in the recess 322 d. The convex part 322e is in a positional relationship facing the convex part 312e.

  The side ends facing the grooves 312d and 322c are inserted and held in the pair of adjacent glasses 61a and 61a. In the grooves 312d and 322c, the grooves 322c are formed deeper.

  The left end of the glass 61a as viewed from the indoor side is sandwiched by the backup members 62b and 62b in the groove 312d. Furthermore, caulking materials 62c and 62c are applied on the right side of the backup materials 62b and 62b. The end on the right side of the glass 61a as viewed from the indoor side is sandwiched by the backup members 62d and 62d in the groove 322c. Furthermore, caulking materials 62c and 62c are applied to the left of the backup materials 62d and 62d.

  The first and second prospects 312a and 322a are connected by screws 82 as fastening members. In the present embodiment, a plurality of screws 82 are fastened at predetermined intervals in the longitudinal direction of the welt 23. The first rectangular main body 311 and the second rectangular main body 321 of the present embodiment are formed in a tubular shape having a rectangular cross section in a combined state.

  An upper frame 21 as a horizontal frame, a baseboard 22 and a blind 24 are connected to the bridge 23 configured as described above. The upper frame 21 is horizontally connected by screws 83a and 83b. In the upper frame 21 connected to the right side of the side stand 23, the screws 83a and 83b inserted from the inside of the first side stand main body portion 311 are respectively formed in the groove portions 211a and 211b formed inside the upper side frame 21 on the right side. It is connected with the bridge 23 by being screwed in. In the upper frame 21 connected to the left side of the side stand 23, the screws 83a and 83b inserted from the inner side of the second side stand main body portion 321 are respectively formed in the groove portions 211a and 211b formed inside the upper side frame 21 on the left side. It is connected with the bridge 23 by being screwed in.

  As shown in FIG. 4, the grooved part 221e, the grooved part 221f, and the grooved part 221g are also formed on the inner side of the core wood part 22 with 83f, 83g, 83h inserted similarly from the inside of the base wood part 22. It is connected to the bridge 23 by being screwed into each. Similarly, for the blind 24, 83 c, 83 d and 83 e inserted from the inside of the cross 23 are screwed into the grooves 241 a, 241 b and 241 c formed inside the blind 24 respectively. And is connected to the bridge 23.

  The sash unit 1 of the present embodiment further includes a reinforcing member 9 that reinforces the side stand 23. Next, the reinforcing material 9 will be described. The reinforcing material 9 is formed to have a substantially U-shaped cross section, and extends in the vertical direction in the gutter 23. The reinforcing material 9 is formed into a predetermined shape by bending with a material such as SUS or steel having higher strength than, for example, aluminum.

  As shown in FIG. 4, the reinforcing member 9 is fixed to the vertical 23 at upper and lower two places by screws 90 a and 90 b as fastening members.

  The fastening position 91 a of the screw 90 a for fastening the reinforcing member 9 on the upper side is set to correspond to the hollow portion of the upper frame 21 connected to the upper portion of the crosspiece 23. As shown in FIG. 3, the tip of the screw 90 a is located inside the upper frame 21. Therefore, the tip of the screw 90a can not be seen from the outside.

  The fastening position 91 b of the screw 90 b for fastening the reinforcing member 9 on the lower side is set to correspond to the hollow portion of the core wood portion 22 connected to the lower portion of the weir 23. Also on the lower side, the tip end of the screw 90b is located inside the hollow portion of the baseboard body portion 221 and can not be viewed from the outside.

  As shown in FIG. 3, the reinforcing member 9 is connected and fixed to the inner side surface of the first side main body portion 311 in a state of being in contact with the convex portion 311 a of the first side main body portion 311 by screws 90 a and 90 b. . In the state where the reinforcing member 9 is connected to the first side main body portion 311, a gap is formed between the first side main body portion 311 and the first direction main body portion 311 in the finding direction. This gap is slightly larger than the thickness of the head (for example, head 831a, 831b, 831e) of the screws 83a to 83h connecting the base wood portion 22 and the blind 24 to the bridge 23.

  As shown in FIG. 4, when the reinforcing member 9 connected to the inner side surface of the first side main body 311 is viewed from the inside of the side back 23, the upper frame 21 as a horizontal frame, the cross wood 22, and the blindness Each of the screws 83a to 83h that connects the connector 24 to the bridge 23 is positioned on the back side of the reinforcing member 9.

  The positional relationship between the screws 90a and 90b and the screws 83a to 83h will be described. The screws 90a and 90b are fastened substantially at the center of the expected direction of the reinforcing member 9, and the positions in the expected direction coincide with each other at different heights. On the other hand, the screws 83a to 83h are positioned on either the outdoor side or the indoor side in the expected direction with respect to the screws 90a and 90b.

  More specifically, the screws 83a, 83c, 83d, 83f, 83h have different heights, and the positions in the prospective direction are closer to the outdoor than the screws 90a, 90b. Even if the outdoor side of the reinforcing material 9 is inclined to the first main body 311 side by these screws 83a, 83c, 83d, 83f, 83h, the movement is restricted (see FIG. 3).

  The positions of the expected directions of the screws 83e and 83g are different from each other at heights different from each other on the outdoor side than the screws 90a and 90b. Also, the screw 83b is located further outside than the screws 83e and 83g. Even if the indoor side of the reinforcing member 9 is inclined to the first main body 311 side, the movement is restricted by the screws 83e, 83g, 83b.

  In this embodiment, in addition to the fact that the screws 83a to 83h are disposed on both sides in the expected direction of the screws 90a and 90b, the positions in the vertical direction are also different. It can regulate. In this manner, the heads of the screws 83a to 83h function inside the gutter 23 as anti-rolling members.

As described above, according to this embodiment, the following effects can be achieved.
That is, the sash unit 1 of the present embodiment is connected to the side wall 23 formed hollow in the inside and the side surface of the side wall 23 and the upper frame 21, the blind 24 and the baseboard formed in the inside hollow. And a reinforcing member 9 disposed on the inner side of the cross section 23. The reinforcing material 9 extends from a position corresponding to the upper frame 21 to a position corresponding to the base wood portion 22, and the upper frame in a state where the reinforcing material 9 is penetrated at a position corresponding to the upper frame 21 inside the gutter 23. 21 at the upper and lower two points by the screw 90a reaching the hollow portion 21 and the screw 90b reaching the hollow portion of the hollow wood portion 22 through the reinforcing material 9 at a position corresponding to the hollow wood portion 22 inside the winding 23 Fixed to the inside of the bridge 23.

  As a result, the structure for connecting the horizontal frame 23 and the horizontal frame (the upper frame 21 and the base part 22) and the structure for connecting the reinforcing material 9 inside the horizontal plate 23 become independent, and the reinforcing material 9 Can be made simple in structure for fixing the inside of the bridge 23. Therefore, the work of connecting the reinforcing material 9 to the inner side of the cross 23 also becomes easy. In addition, since the reinforcing material 9 can be fixed at two places in the upper and lower portions, the manufacturing cost can be reduced by reducing the number of processing of the reinforcing material 9 requiring rigidity. Furthermore, since the tips of the screws 90a and 90b for fixing the reinforcing material 9 are accommodated inside the upper frame 21 and the base wood 22 which can not be visually recognized from the outside, the design is not impaired.

  The upper frame 21, the blind 24 and the base part 22 are screws 83a penetrating the side of the cross 23 at positions different in the expected direction with respect to both the fastening position 91a of the screw 90a and the fastening position 91b of the screw 90b. ~ H connect to the side of the bridge 23 The reinforcing material 9 is fixed to the gutter 23 inside the head (for example, the heads 831 a, 831 b, 831 e) of the screws 83 a to 83 h remaining on the inner side of the gutter 23.

  As a result, the head of the screws 83a to 83h restricts the movement of the reinforcing member 9 toward the expected direction on the inside of the bridge 23. Therefore, the reinforcing member 9 is more stably fixed to the cross bar 23 at an appropriate position.

  As mentioned above, although one preferable embodiment of the frame unit of this invention was described, this invention is not restrict | limited to the above-mentioned embodiment, It can change suitably.

  Although the fastening positions 91a and 91b showed the example of two places of the upper and lower sides in the said embodiment, the number of the fastening positions which fix the reinforcing material 9 to the horizontal 23 is not limited to two upper and lower sides, Make three or more places It can also be done. Next, modifications in which the fastening position is at three locations will be described. In the following description, the same components as those in the embodiment described above may be assigned the same reference numerals and descriptions thereof may be omitted.

  FIG. 5 is a longitudinal cross-sectional view of the bridge 23 showing the fastening positions 91a, 91b, 91c of the reinforcing material 9 of the modification. As shown in FIG. 5, in the modification, in addition to the upper and lower two places, a fastening position 91c corresponding to the position of blindness 24 is set, and a screw 90c is a reinforcing material from the inside of square 23 at the fastening position 91c. It is concluded in the state which penetrated 9. The tip of the screw 90 c penetrates the first member 231 and reaches a hollow portion inside the blind main body portion 241.

  Also in the fastening position 91c added in this modification, the tip of the screw 90c as a fastening member is located inside the blind 24 and can not be visually recognized from the outside. That is, fixing of the reinforcing material 9 can be made stronger without reducing the design.

  As described above, the number of fastening positions at which the reinforcing member 9 is fastened can be appropriately changed according to the circumstances. In addition, as shown in the modification, when adding the fastening position in addition to the upper and lower two places, the fastening position is made to correspond to the position of the horizontal frame, and the reinforcing material is penetrated from the inside of the bridge. It is preferable to fix the reinforcing material to the cross with a screw reaching the inside.

  The configuration of the bridge 23 described in the above embodiment can be changed as appropriate. For example, the bridge 23 may have a symmetrical structure with respect to FIG. 3 when viewed from the indoor side. That is, the first side member 231 and the second side member 232 may be disposed in the left-right direction. In addition, the reinforcing member 9 may be symmetrical with respect to FIGS. 3 and 4 when viewed from the indoor side.

  In the above embodiment, the glass 61a, 62a is accommodated in the frame including the crosspiece 23. However, the present invention is not limited to this. For example, a sliding door such as a sliding door or a sliding window may be accommodated in the opening.

  In the said embodiment, although the shape of the reinforcing material 9 is comprised by the cross-sectional substantially U-shape, it is not limited to this structure. For example, the present invention can be applied to a reinforcing member having an L-shaped cross section or a reinforcing member having a flat plate shape.

  In the said embodiment, although the position of an estimation direction is different with respect to bis 90 ac each of bis 83 ah, it is not limited to this structure. For example, some of the plurality of screws as the horizontal frame fastening members may be configured such that the positions of the screws as the upper fastening members or the lower fastening members agree with the positions in the expected direction. Thus, the arrangement of the fastening members can be appropriately changed according to the circumstances.

1 Sash unit (frame unit)
21 Upper frame (horizontal frame)
22 Baseboard part (horizontal frame, lower frame)
24 blind (horizontal frame)
83a to h screws (horizontal frame fastening members)
90a screw (upper fastening member)
90b screw (lower side fastening member)

Claims (2)

In the case of hollows, the inside is hollow,
A plurality of transverse frames connected to the side surfaces of the cross and the inside is hollow;
A reinforcing member disposed on the inner side of the bridge;
Frame unit provided with
The plurality of horizontal frames include at least an upper frame connected to an upper portion of the square and a lower frame connected to a lower portion,
The reinforcing material is
It extends from a position corresponding to the upper frame to a position corresponding to the lower frame,
An upper fastening member reaching the hollow portion of the upper frame in a state where the reinforcing material is penetrated at a position corresponding to the upper frame on the inner side of the cross section;
A lower fastening member reaching the hollow portion of the lower frame in a state where the reinforcing material is penetrated at a position corresponding to the lower frame on the inner side of the facing;
Are fixed to the inside of the bridge in at least two places ,
A frame unit in which a structure for connecting the side frame and the side frame and a structure for connecting a reinforcing member to the inside of the side frame are independent . The horizontal frame is
It is connected to the side of the side stand by the horizontal frame fastening member which penetrates the side of the side stand at a position where the position in the expected direction is different with respect to the fastening position of the upper side fastening member And
The reinforcing material is
The frame unit according to claim 1, wherein the frame unit is fixed to the side frame inside a portion of the side frame fastening member remaining on the inside of the side frame.

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