JP2019043314A - rail - Google Patents

Abstract

To provide a rail capable of suppressing or eliminating a phenomenon of being pulled off from a floor surface and deformed by tension applied to a fastening long member.SOLUTION: A rail 10 comprises: a floor surface side fixing surface 11 which is provided over substantially the whole in a longitudinal direction and in contact with a floor surface 1a of a cargo chamber 1; a side wall side fixing surface 12 which is provided so as to be disposed substantially vertically and in contact with a side wall 1b of the cargo chamber 1; a groove 13 which is provided over substantially the whole in the longitudinal direction and formed so as to engage with a coupled member 30 to which a metal fitting 21 attached to an end of a fastening long member 20 is coupled; a plurality of first bolt holes 14 opened on the floor surface side fixing surface 11; and a plurality of second bolt holes 15 opened in the side wall side fixing surface 12. The groove 13 has a pair of engaging parts 13d which are provided on both sides in a width direction of the groove and with which a part of the coupled member 30 engages from the bottom side of the groove 13. A virtual surface IS passing through the pair of engaging parts 13d is inclined in a width direction of the rail 10 with respect to the floor surface side fixing surface 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rail fixed to a loading space or a loading platform.

  Conventionally, a pair of rails fixed at intervals in the width direction on the floor surface of the luggage compartment, at least a pair of engagement members respectively engaged with the pair of rails, and one end being one engagement member The luggage is fixed to the floor surface of the cargo compartment using a long member for fastening such as a lashing belt or the like which is connected and the other end is connected to the other engagement member (for example, patent document 1)).

JP, 2014-122074, A

  The pair of rails is fixed to the floor surfaces at both ends in the width direction of the luggage space, and the luggage is disposed between the pair of rails. That is, since the width of the load is smaller than the rail interval, the binding long members do not extend directly above the rail but extend obliquely upward toward the load. In addition, the lower the height dimension of the load, the smaller the angle between the securing long member and the floor surface.

  As shown in FIG. 12, when the angle between the long member 110 for securing and the floor surface 1a of the loading space 1 is reduced, on the upper end side of the engaging member 130 engaged with the groove 121 of the rail 120, Along with the upward force, a force in the width direction of the rail 120 is applied. Here, as the long members 110 for fastening, those having a breaking strength of several t to several tens of t are used, and forces of several t to several tens of t are actually applied when the vehicle moves. For this reason, a situation may occur where a force of several t directed in the width direction of the rail 120 is applied to the upper end side of the engagement member 130.

  When a force in the width direction of the rail 120 is applied to the upper end side (force point) of the engaging member 130, the contact portion between the engaging member 130 and the groove 121 serves as a fulcrum. At least at least the engaging member 130 disposed in the groove 121. A part becomes an action point. For this reason, a force in the pricking direction is applied to the engagement member 130, and a force in the pricking direction is applied to the rail 120 along with the force in the width direction. As described above, since a large force in the width direction and the pricking direction is applied to the rail 120, the rail 120 may be pulled off from the floor surface and deformed.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a rail capable of suppressing or eliminating the phenomenon of being peeled off from the floor surface and being deformed by tension applied to a long member for binding. I assume.

In order to solve the above-mentioned subject, the present invention adopts the following means.
One aspect of the present invention is a rail fixed to a luggage compartment or a cargo platform by a plurality of bolts so as to extend along the floor surface thereof, provided substantially over the entire longitudinal direction of the rail, the floor surface And a side wall side fixing member which is disposed so as to be substantially perpendicular to the floor side fixing surface over substantially the entire longitudinal direction, and is in contact with a side wall of the loading space or the cargo bed It is formed to engage with a surface and a metal fitting provided over substantially the entire longitudinal direction and attached to the end of the long member for securing, or a connected member to which the metal fitting is connected. A groove, a plurality of first bolt holes arranged at intervals in the longitudinal direction and respectively opened to the floor surface side fixing surface, and disposed at intervals in the longitudinal direction; And a plurality of second bolt holes opening in the Having a pair of engaging portions which are provided on both sides of the metal fitting so that a part of the metal fitting or a part of the connected member engages from the bottom of the groove, and an imaginary surface passing through the pair of engaging parts The rail is inclined in the width direction of the rail with respect to the floor side fixing surface.

  In the above aspect, the virtual surface passing through the pair of engaging portions in the groove is inclined in the width direction of the rail. For this reason, at the time of securing of the load, the long member for securing extends obliquely to one side in the width direction of the rail rather than right above the rail, but the virtual surface inclines to the one side Thus, it is possible to reduce the force in the direction of prying exerted on the metal fitting engaged in the groove or the connected member to which the metal fitting is connected.

  Furthermore, the floor surface side fixing surface is pressed against the floor surface by inserting the bolts into the plurality of first bolt holes and screwing them into the female screw holes provided on the floor surface, and the plurality of second bolts By inserting bolts into the holes and screwing them into female screw holes provided in the side wall, the side wall side fixing surface is pressed against the side wall. For this reason, compared with the case where it fixes only to the floor surface, a rail becomes difficult to deform in the width direction.

In the said aspect, it is more preferable that the angle which the said imaginary surface and the said floor surface side fixed surface to comprise be 10 degrees or more and 60 degrees or less.
Further, in the aspect, it is more preferable that the first bolt holes and the second bolt holes are alternately arranged in the longitudinal direction. With this configuration, the force applied to the rail can be easily distributed to the floor surface and the side wall, which is advantageous in preventing deformation of the rail and peeling of the rail from the floor surface and the side wall.

  In the above aspect, the floor surface side fixing surface, the side wall side fixing surface, the first bolt hole, and the second bolt hole are provided, and the first surface has a top surface substantially parallel to the virtual surface; And a first member fixed to the floor surface and the side wall using a second bolt hole, and the groove on one surface side in the thickness direction, the other surface in the thickness direction being the first surface It is preferable to have a second member fixed to the first member by a fastening member so as to be in surface contact with the upper surface of the member.

  The second member has a groove on one surface side in the thickness direction, and the other surface in the thickness direction is in surface contact with the upper surface of the first member, so it is fixed only to the floor surface or only to the side wall Conventional rails can be used as the second member. In this case, using a conventional rail, a virtual surface fixed by bolts to the floor surface and the side wall and passing through a pair of engaging portions of the groove is inclined in the width direction of the rail with respect to the floor surface fixing surface. Can be configured, which is advantageous for improving design freedom and reducing costs.

  According to the present invention, it is possible to suppress or eliminate the phenomenon that the rail is pulled off from the floor surface and deformed due to the tension applied to the long member for fastening.

It is sectional drawing which shows the state which the rail which concerns on the 1st Embodiment of this invention was fixed to the luggage compartment. It is a figure which shows the state by which the rail of 1st Embodiment was fixed to the luggage compartment. It is a perspective view of the rail of 1st Embodiment, a to-be-connected member, and a metal fitting. It is a front view of the to-be-connected member of 1st Embodiment. It is the figure which looked at the rail of 1st Embodiment from the groove side. It is the VI-VI line sectional view in FIG. It is the VII-VII line sectional view in FIG. It is the figure which looked at the 1st member of the rail concerning a 2nd embodiment of the present invention from the upper surface side. It is the IX-IX sectional view taken on the line in FIG. It is the figure which looked at the 2nd member of 2nd Embodiment from the groove side. It is a XI-XI line sectional view in FIG. It is a figure which shows the fastening state of the conventional package.

The rail 10 according to a first embodiment of the present invention will be described below with reference to the drawings.
The rail 10 is fixed by a plurality of bolts B so as to extend along the side wall 1b of the cargo compartment 1, such as a passenger car, a cargo handling vehicle such as a truck, or a container, as shown in FIGS. 1 and 2 It is.
As shown in FIGS. 1, 6 and 7, the rail 10 is provided substantially throughout the longitudinal direction of the rail 10, and a floor surface side fixing surface 11 in contact with the floor surface 1 a of the luggage compartment 1; The rail 10 is provided over substantially the entire longitudinal direction of the rail 10, and is disposed substantially perpendicular to the floor surface side fixing surface 11, and has a side wall fixing surface 12 contacting the side wall 1b of the luggage compartment 1.

  Further, as shown in FIG. 1 and FIG. 5 to FIG. 7, the rail 10 is provided over substantially the entire longitudinal direction, and is attached to the end of the lashing belt 20 which is a long member for fastening. A groove 13 formed to engage with the connected member 30 to which the metal fitting 21 is connected, and a plurality of first members disposed at intervals in the longitudinal direction and having one end opened to the floor surface side fixing surface 11 And a plurality of second bolt holes 15 which are spaced apart in the longitudinal direction and which have one end opened in the side wall fixing surface 12.

  The first and second bolt holes 14 and 15 are through holes, through which the bolt B is inserted. In the present embodiment, the other ends of the first and second bolt holes 14 and 15 are open in the groove 13. Further, as shown in FIG. 5, the first and second bolt holes 14 and 15 are alternately arranged in the longitudinal direction of the rail 10.

  Counterbore portions 14a and 15a are provided on the other end sides of the first and second bolt holes 14 and 15, and the head of the bolt B is pressed against the counterbore portions 14a and 15a, thereby the floor surface side fixing surface Reference numeral 11 and the side wall side fixing surface 12 are in pressure contact with the floor surface 1a and the side wall 1b, whereby the rail 10 is fixed to the floor surface 1a and the side wall 1b. The bolt B inserted into the first and second bolt holes 14 and 15 may be screwed to the floor surface 1a or the side wall 1b itself, and may be provided on a frame disposed on the back side of the floor surface 1a or the side wall 1b. It may be screwed.

  The groove 13 is identical to, for example, the groove of a known rail referred to as an airline rail (registered trademark), and extends substantially the entire length of the rail 10 as shown in FIGS. 3 and 5 to 7. It has interior space 13a and bottom 13b. Moreover, it has the opening part 16 which extends over substantially the whole longitudinal direction of the rail 10 and is connected to the internal space 13a, and the opening part 16 has a plurality of narrow portions 16a having a small width and a plurality of portions having a large width. The wide portions 16 b are alternately provided in the longitudinal direction of the rail 10.

  The plurality of narrow portions 16a are formed by a plurality of flanges 13c extending inward in the width direction of the groove 13 from both sides in the width direction of the groove 13, and the surface 13d on the inner space 13a side of the flange portion 13c is the bottom surface 13b. It is opposite to. The dimension in the width direction of the groove 13 of the narrow portion 16a is smaller than the dimension in the width direction of the groove 13 of the wide portion 16b.

  As shown in FIG. 1, FIG. 3 and FIG. 4, in the connected member 30, one end side in the longitudinal direction is engaged with the engaging member 31 inserted into the internal space 13a of the groove 13 and the other It is provided movably in the longitudinal direction of the engaging member 31 on the outer peripheral side of the engaging member 31 and a coupled portion 32 such as a ring rotatably coupled around an axis extending in the longitudinal direction of the groove 13 on the end side. The movement restricting member 33 and an urging member 34 such as a spring disposed between the connected portion 32 on the outer peripheral side of the engagement member 31 and the movement restricting member 33 are provided. One end side of the biasing member 34 is in contact with the coupled portion 32 in the longitudinal direction of the engaging member 31.

  A large diameter portion 31 a is formed on one end side of the engagement member 31 in the longitudinal direction. The movement restricting member 33 is configured to abut on the large diameter portion 31 a, and the movement restricting member 33 is biased toward the large diameter portion 31 a by the biasing member 34. As a result, the movement restricting member 33 does not fall off from the outer peripheral side of the engaging member 31. A movement restricting engagement portion 33 a is provided at each end of the groove 13 (rail 10) in the movement restricting member 33 in the longitudinal direction. The movement restricting engagement portion 33 a protrudes from both ends in the longitudinal direction of the movement restricting member 33 toward the one end side of the engagement member 31. In the present embodiment, the movement restricting engagement portion 33 a extends in the direction along the longitudinal direction of the engagement member 31.

  The large diameter portion 31a has a width dimension (dimension in the width direction of the groove 13) slightly smaller than the wide portion 16b, and has a width dimension (dimension in the width direction of the groove 13) larger than the narrow portion 16a. Therefore, the large diameter portion 31a of the engagement member 31 is inserted from the wide portion 16b into the internal space 13a, and the engagement member 31 is moved in the longitudinal direction of the groove 13 to correspond the large diameter portion 31a to the narrow width portion 16a. By arranging in the above position, the large diameter portion 31a abuts on the surface (a pair of engaging portions) 13d on the inner space 13a side of the flange portion 13c on both sides in the width direction of the groove 13. Thereby, the large diameter part 31a of the engagement member 31 of the to-be-connected member 30 engages with the groove 13 of the rail 10 (see FIG. 1).

  The groove 13 is inclined in the width direction of the rail 10 with respect to the floor surface side fixing surface 11. For this reason, the bottom surface 13b of the groove 13 and the surface (a pair of engaging portions) 13d on the inner space 13a side of the flange portion 13c on both sides in the width direction of the groove 13 also have a width of the rail 10 The virtual surface IS inclined in the direction and passing through the surfaces 13d on both sides in the width direction of the groove 13 is also inclined in the width direction of the rail 10 with respect to the floor surface side fixing surface 11 (see FIG. 1). The virtual surface IS may pass through a part of each surface 13d. As shown in FIG. 1, in the present embodiment, the floor surface side fixing surface 11 and the bottom surface 13 b and the virtual surface IS form an angle of about 45 °. Although the said angle should just be 10 degrees or more and 60 degrees or less, it is preferable that it is 20 degrees or more, and it is more preferable that it is 30 degrees or more.

  As described above, when the large diameter portion 31a is inserted from the wide portion 16b into the internal space 13a and the engagement member 31 is moved in the longitudinal direction of the groove 13, the operator biases the movement restricting member 33. It moves to the connected part 32 side against the biasing force by. As a result, the movement restricting engagement portion 33 a is placed outside the groove 13.

  On the other hand, when the large diameter portion 31a of the engaging member 31 is engaged with the groove 13 of the rail 10 at an arbitrary narrow portion 16a of the groove 13, the operator makes the groove 13 side of the movement restricting member 33 by the biasing member 34 By allowing movement to the lower side, at least a part of the movement restricting engagement portion 33a is disposed in the inner space 13a. In the present embodiment, the movement restricting engagement portion 33a has a width (a size in the width direction of the groove 13) slightly smaller than that of the wide portion 16b and a width (a size in the width direction of the groove 13) larger than the narrow portion 16a. Have. For this reason, the movement of the groove 13 of the coupled member 30 in the longitudinal direction is restricted by arranging at least a part of the movement restricting engagement portion 33a in the internal space 13a.

  Metal fittings 21 such as hook members are attached to both ends of the lashing belt 20. Further, a lashing force adjuster 22 such as a ratchet buckle or the like is provided at an intermediate portion of the lashing belt 20 (see FIG. 2).

  The pair of rails 10 configured as described above are disposed on both sides in the width direction of the luggage compartment 1 and fixed to the floor surface 1a and the side wall 1b by the bolt B as described above. In this state, as shown in FIG. 2, the to-be-connected members 30 engage with the arbitrary positions in the longitudinal direction of the grooves 13 of the pair of rails 10 as described above, and the to-be-connected portions of the pair of to-be-connected members 30 The brackets 21 at both ends of the lashing belt 20 are connected to each other at 32, respectively. In this state, the load F is pressed and fixed to the floor surface 1 a by increasing the locking force by the locking force adjuster 22 of the lashing belt 20.

  In the present embodiment, the virtual surface IS passing through the pair of engagement surfaces 13 d in the groove 13 is inclined in the width direction of the rail 10. For this reason, when securing the load F, the lashing belt 20 extends obliquely to one side in the width direction of the rail 10 from the connected member 30 not right above the rail 10, but it is virtual on the one side Since the surface IS is inclined, it is possible to reduce the force in the direction of prying applied to the coupled member 30 engaged with the groove 13.

  Further, the floor surface side fixing surface 11 is pressure-welded to the floor surface 1a by inserting the bolts B into the plurality of first bolt holes 14 and screwing them into the female screw holes provided on the floor surface 1a. The side wall side fixing surface 12 is pressure-welded to the side wall 1 b by inserting the bolt B into the second bolt holes 15 and screwing them into the female screw holes provided in the side wall 1 b. For this reason, compared with the case where it fixes only to the floor surface 1a, the rail 10 becomes difficult to deform | transform the width direction.

Further, in the present embodiment, the first bolt holes 14 and the second bolt holes 15 are alternately arranged in the longitudinal direction of the rail 10. With this configuration, the force applied to the rail 10 is easily dispersed to the floor surface 1a and the side wall 1b, which is advantageous in preventing deformation of the rail 10 and peeling of the rail 10 from the floor surface 1a and the side wall 1b.
In the present embodiment, the other ends of the first and second bolt holes 14 and 15 may be opened out of the groove 13 instead of in the groove 13.

A rail according to a second embodiment of the present invention will be described below with reference to the drawings.
Although 2nd Embodiment comprised the rail 10 of 1st Embodiment from 2 members, the groove | channel 13 same as the rail 10 of 1st Embodiment is formed also in the rail of 2nd Embodiment. ing. Further, the structure of the cargo compartment 1 to be fixed and the structures of the lashing belt 20 and the connected member 30 are also the same as those of the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

  The rail of the second embodiment has a plurality of first bolt holes 54 and a plurality of second bolt holes 55, and is a first member 50 fixed to the floor surface 1a and the side wall 1b by a plurality of bolts B. (FIGS. 8 and 9), and a second member 60 (FIGS. 10 and 11) fixed to the first member 50 by a plurality of bolts B, one of the thickness direction of the second member 60 The same groove 13 as in the first embodiment is formed on the surface.

  The first member 50 is provided over substantially the entire longitudinal direction of the rail, and provided over the floor surface side fixing surface 51 in contact with the floor surface 1 a of the luggage compartment 1 and substantially the entire longitudinal direction of the rail And a side wall side fixing surface 52 disposed substantially perpendicular to the floor surface side fixing surface 51 and in contact with the side wall 1 b of the luggage compartment 1.

  The first member 50 also has an upper surface 53 which is inclined in the width direction of the rail with respect to the floor surface side fixing surface 51. In the present embodiment, the floor surface side fixing surface 51 and the upper surface 53 form an angle of approximately 45 °. Although the said angle should just be 10 degrees or more and 60 degrees or less, it is preferable that it is 20 degrees or more, and it is more preferable that it is 30 degrees or more.

  The first and second bolt holes 54 and 55 are through holes, through which the bolt B is inserted. One end of the first bolt hole 54 opens to the floor surface side fixing surface 51, and the other end of the first bolt hole 54 opens to the upper surface 53. One end of the second bolt hole 55 opens to the side wall side fixing surface 52, and the other end of the second bolt hole 55 opens to the upper surface 53. The upper surface 53 is provided with a plurality of holes 53 a at intervals in the longitudinal direction of the first member 50.

  Counterbore portions 54a and 55a are provided on the other end sides of the first and second bolt holes 54 and 55, and the head of the bolt B is pressed against the counterbore portions 54a and 55a, thereby the floor surface side fixing surface 51 and the side wall side fixing surface 52 are press-contacted to the floor surface 1a and the side wall 1b, whereby the first member 50 is fixed to the floor surface 1a and the side wall 1b.

  The second member 60 has, for example, a width dimension of several tens of centimeters or several tens of centimeters, and has a thickness dimension smaller than that. The groove 13 identical to that of the first embodiment is formed on one surface of the second member 60 in the thickness direction as described above, and the other surface of the second member 60 in the thickness direction is the first member 50. The pressure contact surface 61 is in pressure contact with the upper surface 53 of the The second member 60 is provided with a plurality of bolt holes 62 at intervals in the longitudinal direction, one end of each bolt hole 62 is opened to the pressure contact surface 61, and the other end of each bolt hole 62 is in the groove 13. It is open to

  The positions of the plurality of bolt holes 62 correspond to the positions of the plurality of female screw holes 53 a of the first member 50, respectively. Further, a counterbore portion 62a is provided on the other end side of the bolt hole 62, and the pressure contact surface 61 of the second member 60 is formed by pressing the head of the bolt (fastening member) against the counterbore portion 62a. The second member 60 is fixed to the first member 50 by pressure contact with the upper surface 53 of the member 50.

  Also in the second embodiment, the virtual surface IS passing through the pair of engaging surfaces 13 d in the groove 13 is inclined in the width direction of the rail. For this reason, when securing the load F, the lashing belt 20 extends obliquely to one side in the width direction of the rail rather than right above the rail from the connected member 30, but the virtual surface is on the one side Since the IS is inclined, it is possible to reduce the force in the direction of prying exerted on the coupled member 30 engaged with the groove 13.

  Further, the floor surface side fixing surface 51 is pressure-welded to the floor surface 1a by inserting the bolts B into the plurality of first bolt holes 54 and screwing them into the female screw holes provided in the floor surface 1a. The side wall side fixing surface 52 is pressure-welded to the side wall 1 b by inserting the bolt B into the second bolt holes 55 and screwing them into the female screw holes provided in the side wall 1 b. Therefore, the rail is less likely to be deformed in the width direction as compared to the case where it is fixed only to the floor surface 1a.

  Furthermore, the second member 60 has the groove 13 on one surface side in the thickness direction, and the other surface in the thickness direction is in surface contact with the upper surface 53 of the first member 50. For this reason, it is possible to use the conventional rail fixed only to the floor surface 1a or only to the side wall 1b as the second member 60. In this case, the virtual surface IS fixed to the floor surface 1a and the side wall 1b with the bolt B and passing through the pair of engaging surfaces 13d in the width direction of the groove 13 using the conventional rail is fixed to the floor surface side fixing surface 51 On the other hand, it is possible to construct a rail that is inclined in the width direction of the rail, which is advantageous in improving the degree of freedom in design and reducing the cost.

In the first and second embodiments, the rail is fixed to the floor surface 1a and the side wall 1b of the cargo room 1, but the rail is fixed to the floor surface and the side wall of the loading platform of a cargo handling vehicle such as a truck. It is also possible.
In the first and second embodiments, the lashing belt 20 is shown as the long member for fastening, but instead of the lashing belt 20, another long member for fastening such as a chain or a wire may be used. It is possible.

  In the first and second embodiments, the floor side fixing surfaces 11 and 51 and the side wall side fixing surfaces 12 and 52 are flat. However, the floor surface side fixing surfaces 11 and 51 and the side wall side fixing are described. The surfaces 12 and 52 may include a plurality of grooves extending in the longitudinal direction of the rail, and part or all of the floor surface side fixing surfaces 11 and 51 and the side wall side fixing surfaces 12 and 52 may be curved. Even in this case, if the floor surface side fixing surfaces 11 and 51 and the side wall side fixing surfaces 12 and 52 are respectively pressure-welded to the floor surface 1a and the side wall 1b by the bolt B, the rail is fixed as described above.

  Further, in the first and second embodiments, the coupled member 30 is attached to both ends of the lashing belt 20 instead of the fitting 21 and the coupled member 30 attached as a fitting to both ends of the lashing belt 20 is a groove 13 of the rail. Can also be engaged.

1 load room 1a floor surface 1b side wall 10 rail 11 floor surface side fixing surface 12 side wall side fixing surface 13 groove 13a internal space 13b rail bottom surface 13c flange portion 13d internal space side surface 14 first bolt hole 15 second bolt Hole 16 opening 16a narrow portion 16b wide portion 20 lashing belt (long member for securing)
Reference Signs List 21 bracket 22 securing force adjuster 30 coupled member 31 engaging member 31a large diameter portion 32 coupled portion 33 movement regulating member 34 biasing member 50 first member 51 floor side fixing surface 52 side wall side fixing surface 53 upper surface 53a female screw hole 54 first bolt hole 55 second bolt hole 60 second member 61 pressure contact surface 62 bolt hole B bolt F load IS virtual surface

Claims (4)

A rail secured by a plurality of bolts so as to extend along the floor surface of a cargo compartment or bed,
A floor-side fixing surface provided substantially in the entire longitudinal direction of the rail and in contact with the floor;
A sidewall fixing surface disposed substantially perpendicular to the floor surface fixing surface over substantially the entire longitudinal direction and in contact with a side wall of the cargo space or the cargo bed;
A metal fitting provided substantially over the entire longitudinal direction and attached to an end of the long member for securing, or a groove formed to engage with a connected member to which the metal fitting is connected;
A plurality of first bolt holes which are spaced apart in the longitudinal direction and which are respectively opened to the floor side fixing surface;
And a plurality of second bolt holes which are spaced apart in the longitudinal direction and respectively open to the side wall side fixing surface,
The groove is provided on both sides in the width direction, and a part of the metal fitting or a part of the connected member is engaged with a pair of engaging portions engaged from the bottom side of the groove,
A rail in which a virtual surface passing through the pair of engaging portions is inclined in the width direction of the rail with respect to the floor surface side fixing surface.   The rail according to claim 1, wherein an angle formed by the virtual surface and the floor side fixing surface is 10 ° or more and 60 ° or less.   The rail according to claim 1 or 2, wherein the first bolt holes and the second bolt holes are alternately arranged in the longitudinal direction. The floor surface side fixing surface, the side wall side fixing surface, the first bolt hole, and the second bolt hole, and has an upper surface substantially parallel to the virtual surface, and the first and second A first member fixed to the floor and the side wall using a bolt hole;
A second member having the groove on one surface side in the thickness direction and fixed to the first member by a fastening member such that the other surface in the thickness direction is in surface contact with the upper surface of the first member. The rail according to any one of claims 1 to 3, having a member.

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