JP6421164B2 - Aori - Google Patents

Description

  The present invention relates to a tilt attached to a loading platform of a freight vehicle.

  Conventionally, a tilt for surrounding a floor surface of the cargo bed is attached to the cargo bed of the cargo vehicle.

  Such a tilt includes a plurality of rails extending along an edge of a loading platform to be attached, a through bolt for connecting the plurality of rails in a stacked state, and a plurality of rails connected by the through bolt. And a hinge member that is rotatably connected to the hinge member.

  The hinge member is configured so as to rotatably connect the outer side surface of the cargo bed and the lower end of the rail disposed on the lowermost side of the tilt (so-called lower hinge).

  In the freight vehicle, the maximum width of the entire width (vehicle width) including the cab, the loading platform, the tilt, etc. is legally determined. In addition, the width based on the outer edge viewed from the whole tilt is regarded as the cargo bed width, and it is required that the cargo bed width be within the legally determined maximum width range.

  Therefore, if a lower hinge is used, the portion protruding outward from the rail in the lower hinge can be reduced, so that the whole tilt can be arranged outside (position close to the maximum width), As a result, the floor area of the cargo bed can be used widely and effectively.

  In addition, since the lower hinge can reduce the portion protruding outward from the rail, it can be prevented from contacting with an opposite object (for example, an oncoming vehicle) that passes by while traveling, and the tilt is It will be good.

  Various rails and through-bolts are provided for the tilt, and there are various requests for strength, appearance, etc. depending on the user. The above tilt is shown in FIGS. As shown in FIG. 4, a plurality of types of rails and through bolts can be used for the lower rail disposed on the lowermost side (position closest to the loading platform) among the plurality of rails. ing.

  Accordingly, the tilt is enhanced in versatility of the lower rail, so that the degree of freedom in assembling is widened, thereby making it easy to configure to meet the user's request.

Japanese Utility Model Publication No. 57-96076

  By the way, the tilt of the above configuration is configured such that a single type of lower rail corresponds to a plurality of types of rails and through bolts, but the through bolts can only be attached to predetermined positions of the lower rail.

  More specifically, a plurality of horizontal rails are provided inside the lower rail, and the plurality of horizontal rails are provided above the lowermost horizontal rail (lower horizontal rail). The through bolts can only be attached to the side rail (upper side rail). Therefore, the tilt may limit the degree of freedom of assembly.

  Therefore, the tilt may not satisfy the user's request and there is room for improvement.

  Then, this invention makes it a subject to provide the tilt which has the high freedom degree of an assembly method in view of such a situation.

  The tilt of the present invention includes a plurality of long and stacked rails, through bolts for connecting the rails, and a hinge member for connecting the rails to a vehicle bed. Of these, the lower rail disposed at the lowermost side is a pair of long and opposed wall portions, an upper side rail extending between the wall portions over the entire length in the longitudinal direction of the wall portions, A lower horizontal beam that is formed on the lower side of the upper horizontal beam and extends over the entire length in the longitudinal direction of the wall, and the through bolt can be attached to the upper horizontal beam. The through bolt and the hinge member can be attached to the horizontal rail via a receiving washer that can be attached to the lower horizontal rail.

  According to such a configuration, the through bolt can be attached to either the upper side rail or the lower side rail, so that variations in how to attach the through bolt are increased, thereby increasing the degree of freedom in assembly.

  In the tilt of the present invention, a slit extending along the longitudinal direction may be formed in the lower horizontal rail. In this way, the parts to be used are arranged between the lower side rail and the lower side rail from the lower side of the lower side rail through the slit, or the tool is passed through the slit from the lower side of the lower rail to the upper side rail. Since the work can be performed, the work of attaching the through bolt to the upper side rail can be easily performed.

  In the tilt of the present invention, the through bolt has a long male screw part having a thread on the outer periphery and a head provided at one end of the male screw part and larger than the outer diameter of the male screw part. The lateral width of the head in the axial direction of the male screw portion may be smaller than the width dimension of the slit.

  According to such a configuration, the through bolt can be moved between the lower horizontal rail and the upper horizontal rail through the slit, so that the through bolt can be easily attached to the upper horizontal rail. .

  In this case, the receiving washer may include a bolt seat to which the through bolt can be attached and a hinge seat to which the hinge member can be attached. According to such a configuration, the attachment positions of the through bolt and the hinge member with respect to the upper side crosspiece can be individually adjusted, and the degree of freedom in assembly is increased.

  The receiving washer may be a common washer to which the through bolt and the hinge member can be attached. According to such a configuration, the through bolt and the hinge member can be attached to the service washer which is a single member, so that the number of parts constituting the tilt can be reduced.

  In this case, the shared washer may be formed to extend over the entire length of the slit formed to extend along the longitudinal direction with respect to the lower side crosspiece. According to such a configuration, since the slit of the lower side rail is blocked by the common washer, it is possible to prevent foreign matter from entering the lower rail.

  The tilt of the present invention is a holder to which a seal member that is brought into close contact with a loading platform of a vehicle is attached, and includes a holder that is attached to the lower rail, and the holder includes the upper side rail and the lower side rail. It may be fastened to the wall portion. According to such a configuration, it is possible to secure a wide space for performing the operation of attaching the hinge member to the lower horizontal crosspiece, etc., so that workability can be improved.

In the tilt of the present invention, the upper side rungs, said insertion holes for inserting the male threaded portion through bolt has is formed, wherein the receiving washer, mounting holes for inserting the male screw portion into which the through bolt has There is formed, the insertion hole, and around the mounting hole, the circumferential stop portion for restricting the rotation of the through-bolts by interfering with the side surface of the head which the through bolt has may be projected. According to such a configuration, the rotation of the head portion of the through bolt can be restricted by the circumferential stop portion, so that the types of through bolts that can be employed are increased, and the degree of freedom in assembly is increased.

  In the tilt of the present invention, the lower side crosspiece is a pair of mounting piece parts arranged at intervals in an opposing direction orthogonal to the longitudinal direction of the wall part, and the longitudinal direction and the A pair of mounting ribs extending in a direction orthogonal to each of the opposing directions, the pair of mounting ribs having a tapered shape, and the receiving washer having a pair of portions that can be fitted with the mounting rib May be formed.

  According to such a configuration, the pair of receiving washers and the pair of mounting ribs are fitted together, so that the pair of mounting ribs and the pair of mounting pieces are held by the receiving washer in the facing direction.

  In addition, since the pair of mounting ribs are tapered and the pair of portions have a shape conforming to the outer shape of the pair of mounting ribs, the pair of portions of the receiving washer and the pair of mounting ribs are fitted together. A manufacturing error in the interval between the pair of attachments in the facing direction is absorbed, whereby the tilt 1 is assembled with high accuracy.

  As described above, according to the tilt of the present invention, an excellent effect of increasing the degree of freedom in assembling can be achieved.

FIG. 1 is a perspective view of a freight vehicle to which a tilt according to an embodiment of the present invention is attached. FIG. 2 is a front view of the tilt according to the embodiment, and is a front view of the tilt using a through-type through bolt. FIG. 3 is a front view of the tilt according to the embodiment, and is a front view of the tilt using a through-type through bolt. 4A is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4B is a cross-sectional view taken along line VI-VI in FIG. 5A is an enlarged cross-sectional view taken along the line IV-IV in FIG. 2, and is an enlarged cross-sectional view in a state in which a hanging bolt is attached to the upper side rail, and FIG. It is a cross-sectional enlarged view of the VI-VI line, and is a cross-sectional enlarged view of a state where a through-type through bolt is attached to the upper side crosspiece. 6A is an enlarged cross-sectional view taken along the line IV-IV in FIG. 2, and is an enlarged cross-sectional view of a state in which a through-hanging bolt is attached to the lower horizontal rail, and FIG. FIG. 6 is an enlarged cross-sectional view taken along line VI-VI in FIG. FIG. 7 is an enlarged view of a main part of FIG. FIG. 8 is an enlarged view of a main part of FIG. FIG. 9 is an enlarged view of the tilt according to the embodiment, and is an enlarged view of the lower rail in FIG. FIG. 10 is an enlarged view of the tilt according to the embodiment, and is an enlarged view of a region in the vicinity of the lower horizontal rail in FIG. 7. 11A is an enlarged view of the region A in FIG. 4A, and FIG. 11B is an enlarged view of the region A in FIG. 4A in plan view. FIG. 12 is an enlarged view of the region B in FIG. FIG. 13 is an explanatory view of the tilt according to the embodiment, and is an explanatory view showing a state in which the rails are connected by a double screw type through bolt. FIG. 14 is an enlarged view of a main part of a tilt according to another embodiment of the present invention. FIG. 15 is an enlarged view of a main part of a tilt according to another embodiment of the present invention.

  Hereinafter, a tilt according to an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the tilt according to the present embodiment is attached to a loading platform L of the freight vehicle V (an end edge portion of the loading platform L) and surrounds the floor surface of the loading platform L.

  As shown in FIG. 2 and FIG. 4 (a), the tilter 1 is a plurality of (three in this embodiment) rails 2, 3, and 4 that are long and stacked with each other, and the rails 2, 3, and 4 Through bolts 5 for connecting the rails (see FIG. 2), hinge members 6 for connecting the rails 2, 3 and 4 to the loading platform L of the vehicle, and the edge of the loading platform L of the cargo vehicle V And a holder 7 (see FIG. 5) for holding the sealing member S to be (closely attached). However, the number of rails to be stacked may be two or four or more.

  As described above, the plurality of rails 2, 3, 4 have a lower rail 2 disposed on the lowermost side (position closest to the loading platform L), and a middle rail 3 stacked in order on the lower rail 2. An upper rail 4 is included. In the present embodiment, the direction in which the rails 2, 3, 4 are stacked (the direction in which the rails 2, 3, and 4 are connected, that is, the vertical direction in FIG. 4A) is referred to as the connection direction and the following description is given. I will do it.

  The middle rail 3 and the upper rail 4 can be connected to the lower rail 2 according to the present embodiment using a plurality of types of through bolts 5.

  Here, the through bolt 5 that can be used when the middle rail 3 and the upper rail 4 are connected to the lower rail 2 will be described.

  The through bolts 5 have different strength depending on the type, the workability with respect to the rails 2, 3 and 4, and the good appearance (aesthetic appearance) of the tilt 1, but any through bolt 5 is long. It has a male thread portion 50 having a thread on the outer periphery, and is inserted into each of the lower rail 2, the middle rail 3, and the upper rail 4, and one end in the axial direction is fixed to the lower rail 2, and the axis line The other end in the direction is configured to be fixed to the upper rail 4.

  The tilt 1 according to the present embodiment includes a through bolt 5 (so-called suspended type threading) provided with the male screw portion 50 described above and a head 51 provided at the other end of the male screw portion 50. Bolts 5) can be used.

  In the hanging type through-bolt 5, the male screw part 50 and the head part 51 are integrally formed. And in the through-hanging through bolt 5, the lower rail 2, the middle rail 3, and the upper rail 4 are fastened to the one end portion of the male screw portion 50 in the vertical direction in cooperation with the head 51. The fastening member 52 can be attached and detached.

  Here, as shown in FIG. 5A, the tightening member 52 is cylindrical and has an attachment cylinder portion 520 having an inner peripheral surface formed with an internal thread, and one opening of the attachment cylinder portion 520 is closed. And an enlarged diameter portion 521 extending radially outward from the entire outer periphery of the mounting cylinder portion 520. An operation recess 522 that opens in the axial direction of the mounting cylinder 520 is formed on the outer surface of the enlarged diameter portion 521, and a tool such as a screwdriver can be inserted into the operation recess 522. Yes.

  In the through-hanging through-bolt 5, an attachment tube portion 520 can be screwed into one end portion of the male screw portion 50. Further, the mounting cylinder portion 520 is formed to have an outer diameter that can be inserted into the insertion hole 210 of the upper horizontal rail 21 and the mounting hole 800 of the bolt receiving seat 80 described later.

  The outer diameter of the suspended head 51 is smaller than the width of a slit C described later of the lower rail 2.

  As shown in FIG. 11B, a pair of arcuate curved sides 510 along the circumferential direction centering on the axial center of the male threaded portion 50 are formed on the outer peripheral edge of the head 51 of the suspended bolt 5. And a pair of curved sides 510 formed at positions symmetrical with respect to the axis of the male screw portion 50, and a pair of curved sides that are continuous with the ends of the pair of curved sides 510, respectively. A pair of straight sides 511 having a shape extending straight between 510 is included.

  As shown in FIGS. 3 and 4B, the tilt 1 according to the present embodiment includes the male screw portion 50 described above and a head 51 provided at the one end of the male screw portion 50. A through bolt 5 (so-called through-type through bolt 5) can also be used.

  Also in the through-type through bolt 5, the male screw portion 50 and the head portion 51 are integrally formed. And, in the middle hanging through-bolt 5, the lower rail 2, the middle rail 3, and the upper rail 4 are fastened to the other end of the male screw portion 50 in the vertical direction in cooperation with the head 51. The fastening member 52 can be attached and detached.

  The one end portion of the male screw portion 50 in the through-type through bolt 5 is detachable from the fastening member 52 provided with the mounting cylinder portion 520 and the enlarged diameter portion 521 described above.

  As shown in FIG. 12, the outer peripheral edge of the head 51 of the through-type through bolt 5 also has a pair of arcuate curved sides 510 along the circumferential direction centered on the axial center of the male screw portion 50, Between the pair of curved sides 510 formed at positions symmetrical about the axis of the male screw portion 50 and the end portions of the pair of curved sides 510 and between the pair of curved sides 510 A pair of straight sides 511 having a straight shape is included.

  The lateral width of the male screw portion 50 as viewed in the axial direction (the width in the direction in which the pair of straight sides 511 are arranged) is smaller than the width dimension of the slit C, and the vertical width (the direction in which the pair of curved sides 510 are arranged). ) May be larger than the width dimension (lateral width) of the slit C.

  In the through-type through bolt 5, the head 51 is tightened by being inserted from the upper end (the outer surface of the upper end) of the upper rail 4 with the head 51 hooked on the lower rail 2 (the upper horizontal rail 21 or the lower horizontal rail 22). By attaching the member 52 to one end portion of the male screw portion 50, the middle rail 3 and the upper rail 4 can be connected to the lower rail 2.

  In addition, the outer peripheral edge of the head 51 of the hanging type through bolt 5 or the through type through bolt 5 is constituted by a pair of arcuate curved sides 510 and a pair of linear straight sides 511. It can be easily formed by cutting the head 51 formed in a circular shape.

  Further, in the tilt 1 according to the present embodiment, as shown in FIG. 13, a through-bolt composed only of a long shaft-shaped male screw portion 50 having a thread on the outer surface. 5 (so-called double screw type through bolt 5) can also be used.

  The both-thread-type through bolt 5 has a lower stage in which one end of the male thread part 50 in the axial direction is disposed on the upper rail 4 side and the other end of the male thread part 50 in the axial direction is disposed on the lower rail 2 side. The rail 2, the middle rail 3, and the upper rail 4 are inserted into the rail 2, the nut N is screwed into one end of the male screw portion 50, and the above-described fastening member is inserted into the other end portion of the male screw portion 50. 52 is attached.

  The features of the center suspension type through bolt 5, the penetration type through bolt 5, and the double thread type through bolt 5 will be described. The center suspension type through bolt 5 has a head 51 built in the lower side of the upper rail 4. Since the tightening member 52 is built in the lower rail 2, the appearance of the tilt 1 is improved.

  The through-type through bolt 5 is a male head 51 fixed to the lower end of the lower rail 2 (the lower horizontal rail 22 or the upper horizontal rail 21 described later) and disposed on the upper end side in the upper rail 4. Since the fastening member 52 inserted from the upper end of the upper rail 4 is attached to one end of the screw portion 50, the male screw portion 50 can be made longer than other types of through bolts 5. .

  The strength of the tilting 1 (particularly the strength in the connecting direction) increases as the male threaded portion 50 inserted through the lower rail 2, the middle rail 3, and the upper rail 4 becomes longer. The strength of the tilt 1 can be made higher than that of the through bolt 5.

  Further, the through-type through bolt 5 has good workability because the fastening member 52 can be operated from the outside of the upper rail 4 and attached to one end of the male screw portion 50. On the other hand, in the through-type through bolt 5, the fastening member 52 is exposed to the outside of the upper rail 4, so that the through-hang type through bolt 5 or the double-threaded through bolt 5 is the through-type through bolt. The tilt 1 can be made to have a better appearance than 5.

  One end of the male screw portion 50 is fixed to the upper side in the upper rail 4, and the other end of the male screw portion 50 is connected to the lower side rail 22 or the upper side rail of the lower rail 2. 21 is fixed. Therefore, the double screw type through bolt 5 can improve the appearance of the tilt 1 with respect to the through type through bolt 5, and the tilt 1 of the tilt type 1 with respect to the suspended type through bolt 5. Strength can be increased.

  Therefore, in the tilt 1, a through bolt 5 of a type corresponding to the strength required by the user, workability, and the appearance (aesthetic appearance) of the tilt 1 is used.

  As shown in FIG. 2, the lower rail 2 has a shape extending straight in one direction (the horizontal width direction), and the dimension in the longitudinal direction (horizontal width) corresponds to the length of the edge of the loading platform L to be attached. doing. Further, as shown in FIG. 4A, the lower rail 2 is hollow, and the internal space is open at both ends in the longitudinal direction.

  The lower rail 2 according to the present embodiment is a pair of wall portions 20 (hereinafter referred to as lower step wall portions) 20 that extend along the edge of the loading platform L, and are opposed to each other with a space therebetween. A pair of lower horizontal bars 21 provided between the pair of lower horizontal wall parts 20 on the lower side of the upper horizontal bars 21, The lower stage side receiving part 23 connected to the upper end part of the lower stage wall part 20 and having the lower stage side receiving part 23 to which the middle stage rail 3 (the lower stage connecting part 33 to be described later of the middle stage rail 3) can be connected.

When the pair of lower step wall portions 20 stands with respect to the loading platform L, one lower step wall portion 20 is disposed on the loading platform L side, and the other lower step wall portion 20 is disposed on the opposite side to the loading platform L side. In the present embodiment, one lower step wall portion 20 is referred to as a lower step inner wall portion 20 _i , the other lower step wall portion 20 is referred to as a lower step outer wall portion 20 _e , and the lower step inner wall portion 20 _i and the lower step outer wall portion 20 _e are further divided. The directions facing each other (the left-right direction in FIG. 4A) will be referred to as opposing directions, and the connecting direction and the direction orthogonal to each of the opposing directions will be referred to as lateral width directions and will be described below.

In the lower rail 2 according to this embodiment, the lower end of the lower inner wall portion 20 _i is located above the lower end of the lower outer wall portion 20 _e .

A through bolt 5 can be attached to the upper side crosspiece 21. The upper rungs 21, as shown in FIG. 4 (a), is continuous to the lower inner wall portion 20 _i and the lower outer wall portion 20 _e, which extends straight in the opposing direction. Further, the upper horizontal rail 21 extends over the entire length in the horizontal width direction, that is, the longitudinal direction of the lower inner wall portion 20 _i and the lower outer wall portion 20 _e .

As shown in FIG. 7, the upper horizontal rail 21 according to the present embodiment extends along the longitudinal direction of the lower inner wall portion 20 _i and the lower outer wall portion 20 _e . The lower inner wall portion 20 _i is formed with a plurality of insertion holes 210 arranged at a predetermined interval in the longitudinal direction and a receiving recess 211 formed at the central portion in the facing direction.

  The insertion bolt 210 can be inserted with a through bolt 5 (a male screw portion 50 to be described later of the through bolt 5 and a mounting tube portion 520 of the tightening member 52).

  The receiving recess 211 is a portion that opens downward, and the surface that defines the receiving recess 211 includes a bottom surface 211a and a pair of side wall surfaces 211b that are suspended (projected) from the bottom surface 211a. ing. The distance between the pair of side wall surfaces 211b (the distance in the facing direction) is slightly larger than the width of the head 51 (the width in the direction in which the pair of straight sides 511 are arranged).

Lower rungs 22, as shown in FIG. 6 (a), a pair of mounting pieces which are formed in alignment with a gap in the opposing direction between the lower inner wall portion 20 _i and the lower outer wall portion 20 _e Part 220 and a pair of attachment ribs 221 formed on the pair of attachment piece parts 220.

As shown in FIG. 8, one mounting piece 220 is formed along the facing direction from the inner surface of the lower inner wall portion 20 _i (the inner surface of the lower rail 2, hereinafter the same) to the lower outer wall portion 20 _e. And straight out. Also, one of the mounting piece portion 220 extends over the entire length in the longitudinal direction of the lower inner wall portion 20 _i.

The other mounting piece 220 extends straight along the facing direction from the inner surface of the lower outer wall portion 20 _e (the surface that becomes the inner surface of the lower rail 2, hereinafter the same) to the lower inner wall portion 20 _i side. . The other attachment piece 220 extends over the entire length of the lower outer wall portion _{20e in} the longitudinal direction.

  A gap (slit C) is formed between the tip of one attachment piece 220 and the tip of the other attachment piece 220. The slit C is formed so as to continue over the entire length of the lower rail 2 in the longitudinal direction.

  The attachment rib 221 is formed at the tip of the attachment piece 220. The mounting rib 221 according to this embodiment includes a first rib 222 that extends upward from the tip of the mounting piece 220 and a second rib 223 that extends downward from the tip of the mounting piece 220. And have.

  The first rib 222 has an upper inner surface 222a formed between adjacent first ribs 222, and an upper outer surface 222b formed on the opposite side of the upper inner surface 222a in the facing direction.

  The upper inner surface 222a of each first rib 222 extends upward from the distal end portion of the mounting piece 220 (that is, as it becomes the distal end side in the connecting direction), and the first ribs 222 adjacent in the facing direction. It is inclined so that it is gradually separated from On the other hand, the upper outer surface 222b of each first rib 222 extends upward from the tip of the mounting piece 220 and gradually approaches (approaches) toward the adjacent first rib 222 in the facing direction. So that it is inclined. That is, each first rib 222 is tapered.

  The second rib 223 has a lower inner surface 223a formed between adjacent second ribs 223, and a lower outer surface 223b formed on the opposite side of the lower inner surface 223a in the facing direction.

  The lower inner surface 223a of each second rib 223 extends downward from the tip of the mounting piece 220 (that is, as it approaches the tip in the connecting direction) and is adjacent to the opposing direction in the opposing direction. It inclines so that it may gradually separate from 223. On the other hand, the lower outer surface 223b of each second rib 223 extends downward from the tip of the mounting piece 220 and gradually moves toward the adjacent second rib 223 in the facing direction (approaching). Be inclined). That is, each second rib 223 is also tapered.

  Here, in the tilter 1 according to the present embodiment, the lower horizontal rail 22 has a through bolt via a receiving washer 8 that can be attached to the lower horizontal rail 22 as shown in FIGS. 8, 9, and 10. 5 and the hinge member 6 can be attached.

  Further, the tilter 1 includes, as receiving washers 8, bolt receiving seats 80 for fixing the bolts 5 through the lower horizontal rails 22, and hinge receiving seats for fixing the hinge members 6 to the lower horizontal rails 22. 81.

  As shown in FIG. 8, the bolt seat 80 is a plate-like member and is arranged so as to be in contact with the lower surface of the lower horizontal rail 22 (the slit is applied to the lower surface of each mounting piece 220. C is arranged to block C).

The bolt seat 80 has a first surface that is brought into contact with the lower surface of each mounting piece 220 and a second surface that is located on the opposite side of the first surface in the connecting direction. The bolt seat 80 has a dimension in the facing direction in a state where the first surface is in contact with the lower surface of the mounting piece 220 so that the distance between the lower inner wall portion 20 _i and the lower outer wall portion 20 _e is smaller. It is configured.

  The bolt receiving seat 80 according to the present embodiment has a mounting hole 800 through which the through bolt 5 can be inserted and a fitting portion 801 formed on the first surface side, into which the mounting rib 221 is fitted. It is the insertion part 801 and the recessed part 802 for arrangement | positioning formed in the 2nd surface side, Comprising: The through bolt 5 (The enlarged diameter part 521 or head 51 of the fastening member 52 mentioned later of the through bolt 5) is engage | inserted. An arrangement recess 802 is formed.

  The mounting hole 800 is a through-hole formed from the first surface to the second surface of the bolt seat 80, and the bolt seat 80 is applied to the lower surface of each mounting piece 220. , Formed at a position corresponding to the slit C.

  One fitting portion 801 is formed at each end of the bolt seat 80 in the facing direction. The fitting portion 801 is formed so as to continue over the entire length of the bolt seat 80 in the lateral width direction.

  In the bolt seat 80, the inner surface that defines the fitting portion 801 has a shape along the outer surface of the mounting rib 221. Therefore, the inner surface that defines the fitting portion 801 includes an inner inclined surface 801a that contacts the lower inner surface 223a of the second rib 223 and an outer inclined surface 801b that contacts the lower outer surface 223b of the second rib 223. The inner inclined surface 801a and the outer inclined surface 801b are inclined so as to be gradually separated from the bottom side of the fitting portion 801 toward the opening side.

  The arrangement recess 802 is formed in the center of the bolt seat 80 in the facing direction. The arrangement recess 802 is formed so as to continue over the entire length of the bolt seat 80 in the lateral width direction.

  In the bolt seat 80, the inner surface defining the arrangement recess 802 has a bolt receiving surface 802a extending around the mounting hole 800 and both ends of the bolt receiving surface 802a in the opposite direction far from the mounting hole 800 ( That is, a pair of rotation wall surfaces 802b projecting downward (projecting) from one end portion and the other end portion located on the outermost side in the facing direction are included.

  Therefore, the pair of rotation stop wall surfaces 802b are formed to face each other with an interval therebetween in the facing direction. And the space | interval (space | interval in the said opposing direction) between a pair of rotation stop wall surface 802b is slightly larger than the lateral width of the head 51 (lateral width in the direction where a pair of linear edge 511 is located in a line).

  As shown in FIG. 9, the hinge seat 81 is disposed so as to face the fastening plate 82 disposed on the upper surface of the mounting piece 220 and the fastening plate 82 via the mounting piece 220 in the connecting direction. And an auxiliary plate 83.

  The fastening plate 82 according to the present embodiment includes a receiving plate 820 disposed on the upper surface of each mounting piece 220 and a stop plate 821 attached to the receiving plate 820.

  As shown in FIG. 10, the receiving plate 820 includes a plate-like placement plate portion 820 a and a guide portion 820 b provided on the placement plate portion 820 a.

  The mounting plate portion 820a has a first surface that is brought into contact with the upper surface of each mounting piece portion 220, and a second surface that is disposed so as to face the upper horizontal rail 21.

  In addition, in the mounting plate portion 820a, an introduction hole 820aa into which a connecting bolt B (for connecting bolt) for attaching the hinge member 6 to the lower horizontal rail 22 can be inserted, and a positioning portion into which the first rib 222 is fitted. 820ab is formed.

  The introduction hole 820aa is a through hole formed from the first surface to the second surface of the mounting plate portion 820a, and in the state where the mounting plate portion 820a is disposed on the upper surface of each mounting piece portion 220, It is formed at a position corresponding to the slit C.

  One positioning portion 820ab is formed at each end of the mounting plate portion 820a in the facing direction. Further, the positioning portion 820ab is formed to be continuous over the entire length of the mounting plate portion 820a in the lateral width direction.

  In the mounting plate portion 820 a, the inner surface that defines the positioning portion 820 ab is shaped along the outer surface of the first rib 222. Therefore, the inner surface that defines the positioning portion 820ab includes an inner contact surface 820ac that contacts the upper inner surface 222a of the first rib 222 and an outer contact surface 820ad that contacts the upper outer surface 222b of the first rib 222. The inner contact surface 820ac and the outer contact surface 820ad are inclined so as to be gradually separated from the bottom side of the positioning portion 820ab toward the opening side.

  The guide portion 820b includes a pair of upright portions 820ba extending (extending upward) from an end portion (end portion in the facing direction) of the second surface of the mounting plate portion 820a, and the front end of the upright portion 820ba. A pair of extending pieces 820bb extending so as to approach each other in the facing direction.

  Each standing part 820ba and each extending piece 820bb are formed so as to continue over the entire length of the second surface of the fastening plate 82 in the lateral width direction. Further, a gap is formed between the ends of the pair of extending pieces 820bb. Accordingly, in the guide portion 820b, a gap is formed between the pair of upright portions 820ba and between the pair of extending pieces 820bb.

  The stop plate 821 has a plate-like arrangement plate portion 821a arranged on the second surface of the receiving plate 820, and a female screw portion 821b provided continuously on the arrangement plate portion 821a. The stop plate 821 is formed with a screw hole 821c that penetrates the arrangement plate portion 821a and the female screw portion 821b in the connecting direction. In the present embodiment, female screws are formed on the entire inner peripheral surface of the arrangement plate portion 821a that defines the screw hole 821c and the inner peripheral surface of the female screw portion 821b, but at least the inner periphery of the female screw portion 821b. It suffices if a female screw is formed on the surface.

  The arrangement plate portion 821a is provided with a female screw portion 821b at a position corresponding to the introduction hole 820aa of the receiving plate 820. For this reason, the arrangement plate portion 821a according to the present embodiment is provided with a pair of female screw portions 821b corresponding to the pair of introduction holes 820aa of the receiving plate 820.

  The stop plate 821 can be inserted between a pair of guide portions 820b from one end of the receiving plate 820 in the lateral width direction. Further, in a state in which the stop plate 821 is inserted between the pair of guide portions 820b, the arrangement plate portion 821a is disposed between the pair of standing portions 820ba, and the female screw portion 821b is disposed between the pair of extending pieces 820bb. The screw hole 821c and the introduction hole 820aa are in communication with each other in the connecting direction.

  In order to connect the receiving plate 820 and the stop plate 821 to each other in the fastening plate 82, for example, through holes are formed at positions corresponding to the receiving plate 820 and the stop plate 821 in the connecting direction, and the receiving plate 820 and the stop plate 821 are received. The split pin may be inserted into the through hole of the plate 820 and the through hole of the stop plate 821, but if the relative movement between the support plate 820 and the stop plate 821 in the lateral width direction can be restricted, the support plate 820 and the stop plate 821. There is no particular limitation on the means for connecting the.

  The auxiliary plate 83 is plate-shaped, and has a first surface that is in contact with the lower surface of each mounting piece 220 and a second surface that is located on the opposite side of the first surface in the connecting direction. Further, the auxiliary plate 83 is formed with a through hole 830 into which the through bolt 5 can be inserted and a lower receiving portion 831 into which the second rib 223 is fitted.

  The through hole 830 is a through hole formed from the first surface to the second surface of the auxiliary plate 83, and in the state where the auxiliary plate 83 is applied to the lower surface of each mounting piece 220, It is formed in the corresponding position.

  The inner surface that defines the receiving portion 831 of the auxiliary plate 83 has a shape along the outer surface of the second rib 223. Therefore, the inner surface that defines the lower receiving portion 831 includes an upward inner surface 831a that contacts the lower inner surface 223a of the second rib 223 and an upward outer surface 831b that contacts the lower outer surface 223b of the second rib 223. The upward inner surface 831a and the upward outer surface 831b are inclined so as to be gradually separated from the bottom side of the lower receiving portion 831 toward the opening side.

Returning to FIG. 4A, the lower stage side receiving portion 23 is formed so as to straddle the upper end portion of the lower inner wall portion 20 _{i and} the upper end portion of the lower outer wall portion 20 _e . The lower side receiving portion 23 is configured to be able to be fitted to a lower end portion of the middle rail 3 (a lower stage connecting portion 32 described later).

  In the lower rail 2 according to the present embodiment, a plurality of (two in the present embodiment) horizontal rails are provided between the upper horizontal rail 21 and the lower side receiving portion 23, and the plurality of horizontal rails Each has a through hole (not shown) at a position corresponding to the insertion hole 210 of the upper side rail 21.

  The middle rail 3 is hollow, and is formed so that the lateral width corresponds to the lateral width of the middle rail 3. The lower rail 2 according to the present embodiment is a pair of middle wall portions 30 that extend along the edge of the loading platform L, and the middle wall portions 30 that face each other with a space therebetween, and the pair of middle rows A plurality of middle-stage crosspieces 31 that are continuous with each of the wall portions 30, and a lower-stage connection portion 32 that is connected to the lower ends of the pair of middle-stage wall portions 30, and is connected to the lower-stage side receiving portion 23, The middle stage side receiving part 33 connected to the upper end part of the pair of middle stage wall parts 30 and having the middle stage side receiving part 33 to which the upper stage rail 4 (the middle stage connecting part 42 described later of the upper stage rail 4) can be connected.

When the pair of middle-stage wall portions 30 stands with respect to the loading platform L, one middle-stage wall portion 30 is disposed on the loading platform L side, and the other middle-stage wall portion 30 is disposed on the opposite side to the loading platform L side. In the present embodiment, one middle step wall portion 30 is referred to as a middle step inner wall portion 30 _i, and the other middle step wall portion 30 is referred to as a middle step outer wall portion 30 _e .

A through bolt 5 can be attached to the middle horizontal rail 31. Further, the middle rung 31 is continuous to the middle inner wall portion 30 _i and the middle outer wall portion 30 _e, which extends straight in the opposing direction. Furthermore, the middle rung 31 extends over the entire length in the longitudinal direction of the middle inner wall 30 _i and the middle outer wall 30 _e.

  Although not shown for convenience, the middle horizontal rail 31 is formed with a through hole through which the male screw portion 50 of the through bolt 5 can be inserted into each of the positions corresponding to the insertion hole 210 in the connecting direction. Yes.

  The middle side receiving portion 33 is formed so as to straddle the upper end portion of the middle inner wall portion and the upper end portion of the middle outer wall portion.

  The upper rail 4 is hollow and is formed so that the lateral width corresponds to the lateral width of the middle rail 3. The lower rail 2 according to the present embodiment is a pair of upper wall portions 40 extending along the end edge of the loading platform L, the upper wall portions 40 facing each other with a space therebetween, and the pair of upper steps. A plurality of upper horizontal rails 41 that are continuous with each of the wall portions 40, and a middle-stage connection portion 42 that is connected to the lower ends of the pair of upper-stage wall portions 40, and is connected to the lower-stage side receiving portion 23; And a bolt fixing portion 43 for holding a bolt in the middle connecting portion 42.

When the pair of upper stage wall portions 40 stands with respect to the loading platform L, one upper stage wall portion 40 is arranged on the loading platform L side, and the other upper stage wall portion 40 is arranged on the opposite side to the loading platform L side. In the present embodiment, one upper step wall portion 40 is referred to as an upper step inner wall portion 40 _i, and the other upper step wall portion 40 is referred to as an upper step outer wall portion 40 _e .

A through bolt 5 can be attached to the upper horizontal rail 41. The upper horizontal rail 41 is continuous with the upper inner wall portion 40 _i and the upper outer wall portion 40 _e, and extends straight in the facing direction. Further, the upper horizontal rail 41 extends over the entire length of the upper inner wall portion 40 _i and the upper outer wall portion 40 _{e in} the longitudinal direction.

  Although not shown for convenience, the upper horizontal rail 41 is also formed with a through-hole through which the male screw portion 50 of the through bolt 5 can be inserted into each of the positions corresponding to the insertion hole 210 in the connecting direction. Yes.

  The bolt fixing portion 43 is configured to be able to hook the head portion 51 of the hanging type through bolt 5. As shown in FIG. 11A, the bolt fixing portion 43 according to the present embodiment includes a pair of hooked portions 430 disposed in the upper rail 4 with an interval in the facing direction, and a pair of hooked portions. The flange plate 431 is placed on the stopper 430, and the cover plate 432 is placed on the flange plate 431.

One hooked portion 430 is provided on the inner surface of the upper inner wall portion 40 _i , and the other hooked portion 430 is provided on the inner surface of the upper outer wall portion 40 _e . In addition, the clearance gap between a pair of to-be-latched parts 430 is a clearance gap open | released in the said up-down direction and the said width direction.

  The flange plate 431 is formed so that the shape in plan view is rectangular, the length of the short side is smaller than the width of the gap between the pair of hooked portions 430, and the length of the long side is a pair of It is larger than the width of the gap between the hooked portions 430.

  Also, the flange plate 431 has a receiving groove 431a that opens upward (projects downward), and an insertion hole 431b that penetrates in the vertical direction at a position corresponding to the receiving groove 431a. Is formed. The groove width of the receiving groove 431a in the facing direction is slightly larger than the lateral width of the head 51 (lateral width in the direction in which the pair of straight sides 511 are arranged).

  Further, the flange plate 431 can deposit the head 51 of the suspended hanging through-bolt 5 in the receiving groove 431a in a state where the male screw portion 50 of the suspended hanging through-bolt 5 is inserted into the insertion hole 431b. It is configured as follows. In other words, the flange plate 431 is a member for receiving the middle suspension type through bolt 5 (the head 51 of the middle suspension type through bolt 5) in the upper rail 4.

  Further, the lateral width of the receiving groove 431a in the facing direction corresponds to the width from one straight side 511 of the head 51 to the other straight side 511, and when the suspended bolt 5 is rotated. In addition, the straight side 511 of the head 51 interferes with the portion of the flange plate 431 that defines the receiving groove 431a.

  The cover plate 432 is configured to be attached to the flange plate 431 so as to close the receiving groove 431a of the flange plate 431.

  The hinge member 6 is configured so as to rotatably connect the lower end of the lower rail 2 and the outer surface of the loading platform L (a so-called lower hinge). The hinge member 6 according to the present embodiment includes a loading platform side mounting portion 60 that is attached to the loading platform L, and a rail side mounting portion 61 that is connected to the loading platform side mounting portion 60 so as to be relatively rotatable and is mounted to the lower rail 2. Have

  The loading platform side mounting portion 60 includes a loading platform side piece 600 that is fastened (screwed) to the loading platform L, and a loading platform side bearing portion 601 that is provided in the loading platform side piece 600 and through which the rotation shaft P is inserted. Have.

  The rail-side mounting portion 61 is fastened (screwed) to the lower rail 2, the rail-side piece portion 610 is provided on the rail-side piece portion 610, and the rotary shaft P is inserted together with the loading platform-side bearing portion 601. Rail-side bearing portion 611. Therefore, the loading platform side mounting portion 60 and the rail side mounting portion 61 are relatively rotatable in the circumferential direction around the rotation axis P.

  The rail side piece 610 has a shape in which a flat plate portion is bent (bent at a right angle). A rail-side bearing portion 611 is connected to one side of the rail-side piece portion 610 as a boundary. The other side of the rail side piece 610 as a boundary is fixed to the lower horizontal rail 22.

As shown in FIG. 9, the holder 7 is fastened with the fastened portion 70 fastened in contact with the lower inner wall portion 20 _i of the lower rail 2 (the outer surface of the lower inner wall portion 20 _i ), and the fastened portion 70. And a holding portion 71 that holds the seal member S on the lower side of the lower horizontal rail 22.

  The seal member S has elasticity, and is configured to be sandwiched between the holding portion 71 and the end edge portion of the loading platform L when the tilt 1 is raised with respect to the loading platform L. Therefore, when the tilt 1 is raised with respect to the loading platform L, the gap between the tilt 1 (holder 7) and the loading platform L is blocked by the seal member S.

The fastened portion 70 is fastened to the lower inner wall portion 20 _i of the lower rail 2 between the upper horizontal rail 21 and the lower horizontal rail 22. In the present embodiment, the fastened portion 70 is fastened to the lower inner wall portion 20 _i by the rivet R, but a bolt or the like may be used as a fastening member for fastening the fastened portion 70 and the lower inner wall portion 20 _i. Good.

  The configuration of the tilt 1 according to the present embodiment is as described above. Subsequently, a method of assembling the tilting 1 (how to connect the lower rail 2, the middle rail 3, and the upper rail 4) will be described with reference to the accompanying drawings.

  As shown in FIG. 4A, when the lower rail 2, the middle rail 3, and the upper rail 4 are connected by the hanging-type through bolt 5, first, the lower rail 2 and the middle rail 3 are combined and then the lower rail 2 and a middle rail 3 are inserted through a through-hanging through bolt 5.

  Subsequently, the flange plate 431 is attached to the head portion 51 of the hanging bolt through bolt 5. In the present embodiment, the male screw portion 50 is inserted into the insertion hole 431b, the head 51 is disposed in the receiving groove 431a, and the cover plate 432 is attached to the flange plate 431, thereby the head 51 in the receiving groove 431a. Is attached to the head 51 of the bolt 5 through the flange plate 431 (see FIG. 11A).

  In this way, when the through-through through-bolt 5 (head 51) attempts to rotate about the axis of the male screw portion 50, the straight side 511 defines the receiving groove 431a of the flange plate 431. It will be in the state which interferes with the part to perform (namely, the state stopped by the flange board 431) (refer FIG.11 (b)).

  Then, the upper rail 4 is combined with the middle rail 3. Further, the direction of the flange plate 431 is changed by rotating the through-hanging through bolt 5 so that the long sides of the flange plate 431 are aligned in the opposing direction, and the flange is passed through the gap between the pair of hooked portions 430. The head 51 together with the plate 431 is moved above the pair of hooked portions 430.

  After that, the centering bolt 5 is rotated again to change the direction of the flange plate 431 so that the short sides of the flange plate 431 are aligned in the opposite direction, and the flange plate 43 is paired with a pair of hooks. It is placed so as to straddle the part 430. At this time, one end portion of the male screw portion 50 is located above the upper side crosspiece 21.

  And the attachment cylinder part 520 of the fastening member 52 is penetrated from the downward side with respect to the insertion hole 210 of the upper side crosspiece 21.

  Since the enlarged diameter portion 521 is configured not to contact the side wall surface 211b of the upper horizontal rail 21, a tool such as a screwdriver is inserted into the operation recess 522 of the enlarged diameter portion 521 to rotate the entire fastening member 52. Then, only the tightening member 52 rotates with respect to the through-hanging through bolt 5 that is stopped by the flange plate 431 (the surface that defines the receiving groove 431 a), and the mounting cylinder portion 520 is connected to the male screw portion 50. Screw into one end. As a result, the lower rail 2, the middle rail 3, and the upper rail 4 are fastened in the connecting direction by the head portion 51 of the middle hanging through-bolt 5 and the enlarged diameter portion 521 of the tightening member 52.

  When the fastening member 52 is attached to the lower horizontal rail 22 (when one end portion of the male screw portion 50 is fixed to the lower horizontal rail 22), a bolt seat 80 applied to the lower surface of the lower horizontal rail 22 is used. The attachment tube portion 520 of the tightening member 52 is inserted into the attachment hole 800 from below, and the attachment tube portion 520 is screwed into one end portion of the male screw portion 50.

  Since the tightening member 52 is configured so that the enlarged diameter portion 521 and the rotation stop wall surface 802b do not contact with each other in a state where the mounting cylinder portion 520 is inserted into the mounting hole 800 of the bolt seat 80, the suspended member 52 Only the tightening member 52 is rotated with respect to the through bolt 5, and the mounting tube portion 520 can be screwed into one end portion of the male screw portion 50.

  On the other hand, when the lower rail 2, the middle rail 3, and the upper rail 4 are connected by a through-type through bolt 5, the male screw portion 50 of the through-type through bolt 5 is connected to the other end side as shown in FIG. To the insertion hole 210 of the upper horizontal rail 21, the middle horizontal rail 31 of the middle rail 3, and the upper horizontal rail 41 of the upper rail 4.

  If it does in this way, since it arrange | positions so that the head 51 (straight side 511 of the head 51) and the side wall surface 211b of the penetration type penetration bolt 5 may oppose, a penetration type penetration bolt 5 is an external thread part. When attempting to rotate about the 50 axis, the side wall surface 211b interferes with the straight side 511, and the rotation operation of the through-type through bolt 5 is restricted.

  Therefore, the mounting cylinder portion 520 is inserted into the upper rail 4 from the upper end surface thereof, and a tool such as a screwdriver is inserted into the operation recess 522 of the enlarged diameter portion 521, and the through-type threaded passage that is stopped by the side wall surface 211b. The mounting cylinder portion 520 can be screwed into the other end portion of the male screw portion 50 by rotating the entire fastening member 52 with respect to the bolt 5. Accordingly, the lower rail 2, the middle rail 3, and the upper rail 4 are fastened in the connecting direction by the head portion 51 of the through bolt 5 and the enlarged diameter portion 521 of the tightening member 52.

  When the head 51 of the through-type through bolt 5 is fixed to the lower horizontal rail 22, as shown in FIG. 8, the mounting hole 800 for the bolt seat 80 applied to the lower surface of the lower horizontal rail 22. On the other hand, the male screw portion 50 of the through-type through bolt 5 is inserted from the lower side, and the head portion 51 is disposed between the pair of rotation stop wall surfaces 802b.

  If it does in this way, since the straight side 511 of the head 51 opposes the rotation stop wall surface 802b, the penetration type penetration bolt 5 will be in the state stopped around by the rotation stop wall surface 802b. Therefore, only the fastening member 52 is rotated with respect to the through-type through bolt 5, and the attachment tube portion 520 can be screwed into the other end portion of the male screw portion 50.

  When the lower rail 2, the middle rail 3 and the upper rail 4 are connected by the double screw type through bolts 5, a fastening member 52 is provided at one end of the male screw portion 50, as in the case of the middle hanging type through bolt 5. In order to be attached and detached, one end portion of the male threaded portion 50 of the double threaded through bolt 5 is fixed to the bolt seat 80 applied to the upper side rail 21 or the lower side rail 22.

  In this way, the bottom surface 211a of the upper side rail 21 and the bolt receiving surface 802a of the bolt seat 80 are inserted into the insertion hole 210 and the bolt 5 is inserted through the enlarged diameter portion 521 of the tightening member 52, It is the surface with which the head 51 abuts (that is, the receiving surface that receives the tightening member 52 or the head 51), and the side wall surface 211b of the upper side rail 21 and the rotation stop wall surface 802b of the bolt seat 80 are passed through. This is a perimeter stop that restricts the rotation of the through bolt 5 by interfering with the side surface (the straight side 511 of the head 51) of the head 51 of the bolt 5 (through-type through bolt 5).

  As described above, the tilter 1 according to the present embodiment can attach the through bolt 5 to either the upper side rail 21 or the lower side rail 22, so even if the lower rail 2 having the same sectional shape is used, For example, the number of attachment bolts that can be used is increased and the number of types of through-bolts 5 that can be employed is increased, such as corresponding to the positional relationship with the hinge member 6, thereby increasing the degree of freedom in assembly.

  Moreover, since it is not necessary to manufacture and use the rail 2 of a different cross-sectional shape, the cost required for manufacturing and storing the mold can be reduced.

  And since the slit C extended along a longitudinal direction is formed in the lower side crosspiece 22, it is between the lower side crosspiece 22 and the upper side crosspiece 21 from the lower side of the lower side crosspiece 22 through the slit C. It is possible to arrange the parts to be used for the upper side beam 21 and to perform the work on the upper side beam 21 through the tool from the lower side of the lower side beam 22 to the slit C. Therefore, it is easy to attach the through bolt 5 to the upper side beam 21. It can be carried out.

  Further, since the outer diameter of the head 51 of the through-bolt 5 is smaller than the width of the slit C, the through-bolt 5 is disposed between the lower horizontal beam 22 and the upper horizontal beam 21 through the slit C. Therefore, the workability of attaching the through bolt 5 to the upper side rail 21 is improved.

  Further, when the through bolt 5 is a through-type, the lateral width of the head 51 is smaller than the width dimension of the slit C. Even in this case, the through bolt 5 is connected to the lower horizontal rail 22 through the slit C. Since it can arrange | position between the upper side crosspiece 21, attachment work property of the through-bolt 5 with respect to the upper side crosspiece 21 improves.

  Further, the tilter 1 of the present invention includes, as the receiving washer 8, a bolt receiving seat 80 to which the through-bolt 5 can be attached and a hinge receiving seat 81 to which the hinge member 6 can be attached. The attachment positions of the through bolt 5 and the hinge member 6 with respect to 21 can be individually adjusted, and the degree of freedom in assembly is increased.

  Moreover, since the bolt seat 80 is plate-shaped, it can be retrofitted by inserting the bolt seat 80 into the slit C even after the tilt 1 is attached to the loading platform L. Note that the bolt seat 80 can be attached to a lower rail of a type in which no slit is formed in the lower side rail by modifying the lower side rail so as to form an opening.

  Further, the lower horizontal rail 22 is formed through the bolt 5 (bolt seat 80) using mounting ribs 221 (first rib 222 and second rib 223) extending from the mounting piece 220 to both sides in the connecting direction. Alternatively, the hinge member 6 (the fastening plate 82 and the auxiliary plate 83 constituting the hinge receiving seat 81) can be attached.

  Therefore, in the tilt 1, a structure for attaching the bolt seat 80 to the lower side rail 22 and a structure for attaching the hinge seat 81 (fastening plate 82 and auxiliary plate 83) are separately formed. Without this, it is possible to configure the lower horizontal rail 22 to which the bolt seat 80 and the hinge seat 81 (fastening plate 82 and auxiliary plate 83) can be attached.

  Further, the mounting ribs 221 (the first rib 222 and the second rib 223) formed on the mounting piece 220 are continuous over the entire length in the longitudinal direction of the mounting piece 220. The through bolt 5 (bolt seat 80) or the hinge member 6 (fastening plate 82 and auxiliary plate 83 constituting the hinge seat 81) can be selectively attached at each position in the longitudinal direction. Accordingly, the attachment positions of the through bolt 5 and the hinge member 6 with respect to the attachment piece 220 can be freely determined within a range corresponding to the entire length of the attachment piece 220 in the longitudinal direction.

  And in this embodiment, since the to-be-fastened part 70 of the holder 7 is fastened to the lower rail 2 between the upper side rail 21 and the lower side rail 22 (in this embodiment, it is riveted), A member (in this embodiment, a rivet) that fastens the portion 70 to the lower rail 2 is attached to the lower horizontal rail 22 (for example, the mounting operation of the through bolt 5 to the lower horizontal rail 22 or the hinge member 6 is attached) Work, etc.).

Further, by setting the engagement position between the fastening portion 70 and the lower rail 2 between the upper rung 21 and lower horizontal rail 22, the lower end of the lower inner wall portion 20 _i from the lower outer wall portion 20 _e lower end of Therefore, it is easy to insert components and tools from the lower inner wall portion 20 _i side to the lower region of the lower side rail 22 (that is, accessibility).

Therefore, in the lower rail 2 according to this embodiment, a tool such as a spectacle wrench is used when performing an operation on the lower horizontal beam 22 (for example, an operation of attaching the through bolt 5 or the hinge member 6 to the lower horizontal beam 22). Can be easily inserted from the inner side (lower inner wall portion _20i side) into the lower region of the lower horizontal rail 22, thereby increasing the degree of freedom of the tool to be used and improving the workability.

  In each of the upper side rail 21 and the bolt seat 80 of the present embodiment, an extension as a perimeter that interferes with the side surface (straight side 511) of the head 51 of the through-type through bolt 5 is provided. Since the protruding portion 211 and the rotation stop wall surface 802b are provided, the rotation of the head 51 of the through bolt 5 can be restricted by the peripheral stop portion.

  Therefore, when the through bolt 5 is a through-type, the head 51 is tightened against one end of the male screw 50 while restricting the rotation of the head 51 by the peripheral stop (the extension 211 or the stop wall 802b). The insertion member 52 can be made removable.

  Further, in the lower side rail 22 of the lower rail 2, the positioning portion 820ab of the receiving plate 820 is externally fitted to the first rib 222, the fitting portion 801 of the bolt seat 80 is fitted to the second rib 223, Since the receiving portion 831 of the auxiliary plate 83 is externally fitted, the first rib 222 and the second rib 223 are unlikely to contact and separate in the facing direction (that is, the slit C is difficult to expand and narrow). ).

In this manner, the convex fitting between the first rib 222 and the positioning portion 820ab of the receiving plate 820, the fitting portion 801 of the second rib 223 and the bolt receiving seat 80, and the lower receiving portion 831 of the auxiliary plate 83 are performed. Due to the convex fitting, the first rib 222 and the second rib 223 are difficult to contact and separate in the facing direction, so the lower inner wall portion 20 _i connected to the first rib 222 and the second rib 223 via the attachment piece 220 and distortion in the opposing direction of the lower outer wall portion 20 _e (e.g., distortion caused by use) can be suppressed.

  Further, in the present embodiment, a positioning portion 820ab whose opening width gradually increases toward the opening side with respect to the tapered first rib 222 is externally fitted, and further, the opening with respect to the tapered second rib 223 is opened. Since the fitting portion 801 and the lower receiving portion 831 whose opening widths gradually increase toward the side are externally fitted, when the bolt seat 80, the fastening plate 82, and the auxiliary plate 83 are attached to the lower side crosspiece 22, The variation in the positions of the bolt receiving seat 80, the fastening plate 82, and the auxiliary plate 83 in the facing direction can be suppressed.

The lower rail 2 has a shape in which the lower horizontal beam 22 is divided in the opposite direction with respect to the upper horizontal beam 21 that is continuous with the lower inner wall portion 20 _i and the lower outer wall portion 20 _e in the opposite direction. Therefore, for example, when the lower rail 2 is manufactured by extrusion molding of an aluminum alloy, there is a manufacturing error (a manufacturing error of about ± 0.3 mm to 1.0 mm) in the interval between the pair of mounting ribs 221 in the facing direction. It is likely to occur.

  In this case, if the bolt seat 80 and the hinge seat 81 (fastening plate 82, auxiliary plate 83) are manufactured by extrusion molding by solid molding, the bolt seat 80 and hinge seat 81 (fastening). Since the manufacturing error of the plate 82 and the auxiliary plate 83) can be suppressed (because the manufacturing error can be suppressed to about ± 0.1 mm), the first rib 222 and the positioning portion 820ab of the receiving plate 820 are convexly fitted. When the second rib 223 and the fitting portion 801 of the bolt seat 80 and the lower plate portion 831 of the auxiliary plate 83 are convexly fitted, there is a manufacturing error in the interval between the pair of mounting ribs 221 in the facing direction. Absorbed. Therefore, the tilt 1 can be assembled with high accuracy.

  The tilt 1 of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

  In the above embodiment, although not particularly mentioned, the tilt 1 may be attached to the lateral edge of the loading platform L or may be attached to the rear edge. Good.

  In the above embodiment, in the upper side crosspiece 21, the peripheral stop portion is configured by the side wall surface 211 b from the bottom surface 211 a on both sides of the insertion hole 210 in the facing direction, but is not limited to this configuration. For example, in the upper horizontal rail 21, the peripheral stop portion may be configured by forming one or more protrusions protruding downward from the bottom surface 211 a around the insertion hole 210.

  In the above embodiment, the upper inner surface 222a and the upper inner surface 222a of the first rib 222 are formed so as to be inclined with respect to the connecting direction and the opposing direction, but the present invention is not limited to this configuration. For example, the upper inner surface 222a and the upper inner surface 222a of the first rib 222 may be formed so as to extend straight along the connecting direction.

  Further, only the upper inner surface 222a or only the upper inner surface 222a of the first rib 222 may be formed to extend straight along the connecting direction. That is, the first rib 222 may be formed such that at least one of the upper inner surface 222a and the upper inner surface 222a is inclined with respect to the connecting direction and the opposing direction.

  In the above embodiment, the lower inner surface 223a and the lower inner surface 223a of the second rib 223 are formed so as to be inclined with respect to the connecting direction and the opposing direction, respectively, but this configuration is limited. Not. For example, the lower inner surface 223a and the lower inner surface 223a of the second rib 223 may be formed to extend straight along the connecting direction.

  Further, only the lower inner surface 223a of the second rib 223 or only the lower inner surface 223a may be formed to extend straight along the connecting direction. That is, the second rib 223 may be formed such that at least one of the lower inner surface 223a and the lower inner surface 223a is inclined with respect to the connecting direction and the opposing direction.

  In the above embodiment, the receiving washer 8 includes a bolt receiving seat 80 for attaching the through-bolt 5 to the lower horizontal rail 22 and a hinge receiving seat 81 for attaching the hinge member 6 to the lower horizontal rail 22. However, the present invention is not limited to this configuration. For example, a common washer to which the through bolt 5 and the hinge member 6 can be attached may be provided. In this way, since the through bolt 5 and the hinge member 6 can be attached to the common washer that is a single member, the number of parts can be reduced by sharing the parts.

  In this case, the common washer may be formed so as to extend over the entire length of the slit C. That is, one common washer may be arranged in one slit C. In this way, since the slit C of the lower side rail 22 is closed by the common washer, entry of foreign matter into the lower rail 2 can be prevented. Furthermore, the strength of the lower part of the lower rail 2 is improved by the shared washer.

In the above embodiment, the fastened portion 70 is fastened to the lower inner wall portion 20 _i of the lower rail 2 between the upper horizontal rail 21 and the lower horizontal rail 22, but is not limited to this configuration. For example, as shown in FIG. 14, the fastened portion 70 may be fastened to the lower inner wall portion 20 _i of the lower rail 2 by a rivet R on the lower side of the lower horizontal rail 22. In this case, as shown in the figure, since there is a rivet R in the open part, when attaching the fastened part 70 to the lower inner wall part 20 _i using the rivet R, it is possible to easily discharge chips.

  In the above embodiment, the mounting rib 221 extends from the mounting piece 220 to the upper side and the lower side, but is not limited to this configuration. For example, the attachment rib 221 may extend only upward from the attachment piece 220, or may extend only downward from the attachment piece 220.

  In the above embodiment, the convex first rib 222 and the positioning portion 820ab of the receiving plate 820 are fitted. However, the present invention is not limited to this configuration. For example, the lower side rail 22 faces upward. An opening portion may be formed, and the receiving plate 820 may be formed with a convex rib that can be fitted to the portion.

  In the said embodiment, although the convex 2nd rib 223 and the insertion part 801 of the receiving seat 80 for bolts, and the lower receiving part 831 of the auxiliary plate 83 were fitted, it is not limited to this structure, For example, a portion that opens downward may be formed in the lower side rail 22, and a convex rib that can be fitted to the portion may be formed in the bolt seat 80 or the auxiliary plate 83. .

  In the above embodiment, the connecting bolt B with the male screw portion 50 facing upward is attached to the fastening plate 82 and the auxiliary plate 83, but the present invention is not limited to this configuration. For example, the fastening plate 82 and the auxiliary plate 83 may be attached with a connecting bolt B with the male screw portion 50 facing downward as shown in FIG. In this case, the second surface of the receiving plate 820 is provided with a restricting portion 822 for preventing the head of the connecting bolt B from rotating instead of the stop plate 821 for screwing the male screw portion 50 of the connecting bolt B. It only has to be.

DESCRIPTION OF SYMBOLS 1 ... tilt, 2 ... lower rail, 3 ... middle rail, 4 ... upper rail, 5 ... through bolt, 6 ... hinge member, 7 ... holder, 8 ... receiving washer, 20 ... lower wall part, _20e ... lower outer wall part , 20 _i ... lower inner wall part, 21 ... upper side rail, 22 ... lower side rail, 23 ... lower side receiving part, 30 ... middle stage wall part, 30 _e ... middle stage outer wall part, 30 _i ... middle stage inner wall part, 31 ... Middle horizontal crossbar, 32 ... lower stage connecting part, 33 ... middle stage side receiving part, 40 ... upper stage wall part, 40 _e ... upper stage outer wall part, 40 _i ... upper stage inner wall part, 41 ... upper stage side crosspiece, 42 ... middle stage side coupling part , 43 ... Bolt part, 50 ... Male screw part, 51 ... Head, 52 ... Tightening member, 60 ... Loading platform side attaching part, 61 ... Rail side attaching part, 70 ... Fastened part, 71 ... Holding part, 80 ... Receptor for bolt, 81 ... Receptor for hinge, 82 ... Fastening plate, 83 ... Auxiliary plate, 210 ... Insertion hole, 211 ... Receiving recess, DESCRIPTION OF SYMBOLS 11 ... Extension part, 211a ... Bottom surface, 211b ... Side wall surface, 220 ... Mounting piece part, 221 ... Mounting rib, 222 ... First rib, 222a ... Upper inner surface, 222b ... Upper outer surface, 223 ... Second rib, 223a ... Lower inner surface, 223b ... lower outer surface, 510 ... curved side, 511 ... straight side, 520 ... mounting cylinder portion, 521 ... expanded diameter portion, 522 ... concave for operation, 600 ... single side piece portion, 601 ... loading side bearing 610 ... rail side piece, 611 ... rail side bearing part, 800 ... mounting hole, 801 ... fitting part, 801a ... inner inclined surface, 801b ... outer inclined surface, 802 ... arrangement recess, 802a ... bolt receiving surface , 802b... Stop wall surface, 820... Receiving plate, 820a .. Placement plate portion, 820aa... Introduction hole, 820ab... Positioning portion, 820ac. Standing portion, 820bb ... extending piece, 821 ... stop plate, 821a ... arrangement plate portion, 821b ... female screw portion, 821c ... screw hole, 822 ... regulating portion, 830 ... through hole, 831 ... bottom receiving portion, 831a ... upper Inner surface, 831b ... Upward outer surface, B ... Connection bolt, C ... Slit, L ... Cargo, N ... Nut, P ... Rotary shaft, R ... Rivet, S ... Seal member, V ... Cargo

Claims (9)

  A plurality of long and stacked rails, through bolts for connecting the rails, and a hinge member for connecting the rails to a vehicle bed, the lowermost of the plurality of rails The lower rails disposed on the upper side rail are long and opposite to each other, the upper side rail extending across the entire length of the wall portion between the wall portions, and the lower side of the upper side rail And a lower horizontal beam extending over the entire length of the wall portion in the longitudinal direction.The through bolt can be attached to the upper horizontal beam, and the lower horizontal beam includes the lower horizontal beam. A tilt that allows the through bolt and the hinge member to be attached via a receiving washer that can be attached to the lower horizontal rail.   The tilt according to claim 1, wherein a slit extending along the longitudinal direction is formed in the lower side crosspiece.   The through bolt has a long male screw part having a thread on the outer periphery and a head provided at one end of the male screw part and larger than the outer diameter of the male screw part, and the male screw part The tilt according to claim 2, wherein a lateral width of the head as viewed in the axial direction is smaller than a width dimension of the slit.   The tilt according to any one of claims 1 to 3, comprising a bolt seat to which the through bolt can be attached and a hinge seat to which the hinge member can be attached as the receiving washer.   The tilt according to any one of claims 1 to 4, wherein the receiving washer is a common washer to which the through bolt and the hinge member can be attached.   The tilt according to claim 5, wherein the common washer is formed so as to extend over the entire length of a slit formed so as to extend along the longitudinal direction with respect to the lower side crosspiece.   A holder to which a seal member to be brought into close contact with a loading platform of a vehicle is provided, the holder being attached to the lower rail, and the holder is fastened to the wall portion between the upper side rail and the lower side rail. The tilt according to any one of claims 1 to 6. The upper side rungs, said insertion holes for inserting the male threaded portion through bolt has is formed on the receiving washer, mounting holes for inserting the male screw portion into which the through bolt has is formed, the insertion 8. A perimeter stop portion that protrudes from the hole and the mounting hole so as to interfere with a side surface of a head portion of the through bolt and restrict the rotation of the through bolt. Aori according to item 1.   The lower lateral crosspiece is orthogonal to the longitudinal direction and the opposing direction from a pair of attachment piece portions arranged at intervals in an opposing direction orthogonal to the longitudinal direction of the wall portion, and from a tip portion of the attachment piece portion A pair of mounting ribs extending in a direction to be formed, the pair of mounting ribs having a tapered shape, and the receiving washer being formed with a pair of portions that can be fitted to the mounting rib. Aori as described in 1.

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