JP5992566B1 - Assembly structure of grating to groove block - Google Patents

Abstract

The present invention provides a grating capable of improving workability when assembling to a groove block. A grating 1 includes a grating main body 31 and a plurality of locking members 32. Each locking member has a rod-like body 41, a rotating body 42, and a stopper 43. Then, after the grating main body is placed on the first projecting portion 11 and the second projecting portion 12 of the groove block, when the rotating operation of the operating portion 46 of the rod-shaped body is performed, it integrally rotates with the rod-shaped body. When the rotation of the rotating body is restricted by the stopper that has come into contact with the contact portion, and the rotation of the operation portion is further performed in the restricted state, the screw portion 47 of the rod-like body is attached to the fastening portion 49 of the rotating body. Each of the locking members is tightened so that the locking portion 50 of the rotating body locks to the first protruding portion or the second protruding portion from below so as to restrict the upward movement of the grating body. Is configured. [Selection] Figure 8

Description

The present invention relates to a structure for attaching a grating to a groove block .

  Conventionally, concrete groove blocks are used for drainage grooves such as side grooves and road crossing grooves. For example, the grating described in Patent Document 1 is attached to the opening of such a groove block. When the grating is attached to the groove block, the grating is fixed to the groove block so that lifting of the grating can be restricted.

  Specifically, the grating includes a grating body, a raised body placed on a flange of the groove block, and four side wall inner surface rotating pieces. And this grating is comprised so that it may be maintained in the state fixed to the said groove block by attaching to the said opening part, being assembled in the opening part of the said groove block by these members.

  However, when the grating is assembled, the four side wall inner surface rotating pieces are fastened and fixed to the raised body by a plurality of fastening means using bolts and nuts, and the grating main body is fastened and fixed to the raised body. There was a need. For this reason, the number of parts to be handled at this time becomes relatively large, and the attaching work of the grating takes time and there is a possibility that the workability is lowered.

Japanese Patent Application No. 2013-187021

This invention is made | formed in view of such a situation, and it aims at provision of the assembly | attachment structure of the grating to a groove block which can improve the workability | operativity at the time of the assembly | attachment to a groove block .

The invention according to claim 1
First side wall and second side wall opposing each other,
Top wall or bottom wall connecting the said second sidewall and said first sidewall to form a groove,
A first protrusion protruding from the first side wall toward the second side wall ;
A first locking surface inclined in a downward direction from the top of the first protrusion toward the first side wall;
A second protrusion protruding from the second side wall toward the first side wall so that a gap is formed between the first protrusion and the first protrusion ;
A second locking surface inclined in a downward direction from the top of the second protrusion toward the second side wall; and
A groove block having an opening exposing said first protrusion and said second protrusion,
A grating assembly structure to the groove block , comprising a grating that can be assembled to the groove block from the opening,
The grating is
A grating body that can be placed on the first protrusion and the second protrusion;
A plurality of locking members attached to the grating main body and configured to be lockable to the first protrusion or the second protrusion;
Each locking member is
A rod-shaped body that has an operation portion disposed on one end side in the axial direction and a screw portion disposed on the other end side in the axial direction, and is rotatably supported in a penetrating state in the grating body;
The threaded portion and screwed fastening portion, located on one of the fastening portion so as to be engaged with the second locking face of said first locking surface and the second projecting portion in the first projecting portion And a rotating body having a contact portion arranged on the other side of the fastening portion and connected to the rod-shaped body so as to be integrally rotatable,
In order to position the rotating body at a predetermined rotational position, it has a stopper that can come into contact with the contact portion of the rotating body so as to restrict the rotation of the rotating body,
After the grating main body is placed on the first projecting portion and the second projecting portion, when the operation portion of the rod-shaped body is rotated, the rotation of the rotating body that rotates integrally with the rod-shaped body is performed. When the rotation of the operation portion is further controlled in the restricted state by the stopper that is in contact with the contact portion, the screw portion of the rod-like body is tightened to the fastening portion, and the upper portion of the grating body is moved upward. In order to restrict the movement, the locking portion is configured to lock the first protrusion or the second protrusion from below.

According to this configuration, it is possible to perform the assembly of the grating while reducing the number of parts necessary for assembling the grating to the groove block. In the implementation as of the set, the available plurality of locking members which are pre-attached to the grating body, and only by rotation operation of the operating unit than can perform locking, simplification of work It becomes possible to plan.

  Furthermore, since the grating can be fixed relatively firmly to the groove block after the assembly is performed, when a large force is instantaneously applied to the grating (for example, a large truck travels on the grating). ), The grating can be prevented from jumping up. In addition, it is possible to reduce noise caused by the grating by suppressing rattling of the grating.

  In addition, when the grating is assembled to the groove block, it is not simply placed on the first protrusion and the second protrusion, but is fixed to the groove block by the plurality of locking members. Therefore, it is possible to prevent the grating from being easily lifted (by hand) from the groove block. Therefore, the occurrence of the theft of the grating can be suppressed.

The invention according to claim 2
The locking portion is
Those having a first locking surface or the line contact can contact surface with the second engaging surface of the second projecting portion in the first projecting portion.

  According to this configuration, when the locking portion is locked to the locking surface of the first protruding portion or the locking surface of the second protruding portion, the locking portion is locked to the locking surface of the first protruding portion. Or it becomes possible to obtain the latching structure which is easy to contact the latching surface of the said 2nd protrusion part. Therefore, when there is a slight difference in inclination angle on the locking surface, the locking reliability can be increased.

The invention according to claim 3
The locking portion is
In order to engage with the first projecting portion or the second projecting portion, the abutment capable of being in surface contact with the first retaining surface of the first projecting portion or the second retaining surface of the second projecting portion . It has a surface.

  According to this configuration, when the locking portion is locked to the locking surface of the first protruding portion or the locking surface of the second protruding portion, the locking portion is the first protrusion at the contact surface. It is possible to obtain a merit that it is easy to stably fix the grating to the groove block by securing a relatively wide contact portion that contacts the locking surface of the portion or the locking surface of the second protrusion.

ADVANTAGE OF THE INVENTION According to this invention, the assembly | attachment structure of the grating to a groove block which can improve the workability | operativity at the time of the assembly | attachment to a groove block can be provided.

It is a perspective view which shows the state which assembled the grating which concerns on one Embodiment of this invention to the groove block. It is a perspective view of the groove block of FIG. (A) It is XX arrow sectional drawing of FIG. (B) It is a YY arrow sectional drawing of FIG. It is a perspective view which shows the other example of a groove block. It is a top view of the grating of FIG. It is side surface sectional drawing of the grating of FIG. It is a partial cross section figure which shows the installation state to the groove block of the grating of FIG. It is a partial cross section figure which shows the assembly completion state to the groove block of the grating of FIG. (A) It is a side view which shows the one state which the latching member of the grating of FIG. 1 can take with respect to a groove block. (B) It is a side view which shows another state which the latching member of (a) can take with respect to a groove block. (A) It is a top view which shows one state which the latching member of the grating of FIG. 1 can take with respect to a groove block. (B) It is a top view which shows another state which the latching member of (a) can take with respect to a groove block. It is a partial cross section figure which shows the assembly completion state to the groove block of the grating which concerns on other embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, the perspective view showing the state which assembled | attached the grating 1 which concerns on one Embodiment of this invention to the groove block 2 is shown. FIG. 2 shows a perspective view of the groove block 2. Fig.3 (a) shows the XX arrow sectional drawing of FIG. FIG. 3B is a cross-sectional view taken along the arrow YY in FIG.

  As shown in FIG. 1, the grating 1 can be assembled to the groove block 2. The groove block 2 is capable of forming a flow path (groove) 3 through which a fluid flows, and is used, for example, as a drainage groove. In the present embodiment, as the groove block 2, as shown in FIG. 2, a concrete gradient variable block having an opening 4 into which the grating 1 can be fitted is employed.

  The groove block 2 is a reverse concave block whose longitudinal direction is the direction of the flow path (the direction of the arrow 5 in FIG. 1) through which the fluid flows in the flow path 3. As shown in FIGS. 3A and 3B, the groove block 2 includes a first side wall 7 and a second side wall 8 that face each other, and a top wall 9. The first side wall 7 and the second side wall 8 are arranged such that a predetermined interval is maintained between mutually facing surfaces (inner surfaces facing the flow path 3).

  The top wall 9 is provided so as to connect the upper end of the first side wall 7 and the upper end of the second side wall 8 so as to form the flow path 3. In the top wall 9, the opening 4 is provided in the middle in the longitudinal direction so as to expose the internal space of the groove block 2 to the outside. The opening 4 is formed in a shape corresponding to the outer shape of the grating 1 (here, rectangular in plan view).

  The groove block 2 also includes a first protrusion 11 and a second protrusion 12. The first projecting portion 11 is provided so as to project from the middle part of the first side wall 7 toward the second side wall 8. The second projecting portion 12 extends from the upper and lower middle portions of the second side wall 8 so that a gap 13 is formed between the second projecting portion 12 and the first projecting portion 11 in the inner space of the groove block 2. It protrudes toward the 7 side.

  The first projecting portion 11 and the second projecting portion 12 are exposed upward through the opening 4, and the grating 1 fitted in the opening 4 (specifically, a grating main body to be described later). 31) can be placed directly or indirectly and supported from below. The first projecting portion 11 and the second projecting portion 12 are extended along the longitudinal direction of the groove block 2.

  Specifically, the first projecting portion 11 and the second projecting portion 12 are both formed in a mountain shape that protrudes toward the gap 13. The first projecting portion 11 and the second projecting portion 12 are respectively provided on the top portions 15 and 16, the placement surfaces 17 and 18 positioned above the top portions 15 and 16, and the lower side of the top portions 15 and 16. It has the locking surface 21 * 22 located.

  The mounting surface 17 of the first projecting portion 11 and the mounting surface 18 of the second projecting portion 12 are composed of horizontal surfaces at substantially the same height. The locking surface 21 of the first protrusion 11 and the locking surface 22 of the second protrusion 12 are respectively provided on the corresponding first side wall 7 side or the second side wall 8 side from the tops 15 and 16 side. It is composed of an inclined surface that is inclined in the direction of descending as it goes.

  Therefore, in the groove block 2, the width in the direction orthogonal to the flow path direction, that is, the flow path width (groove width) of the flow path 3 includes the first protrusion 11 and the second protrusion 12. The lower part is wider than the upper part. In the upper portion, the groove width is widened in the portion where the locking surfaces 21 and 22 are arranged.

  Note that the grating according to the present invention can be assembled to the groove block 2 in the present embodiment, but the assembly target is not limited to this. For example, as shown in FIG. The first side wall 24 and the second side wall 25, the bottom wall 26, the first projecting portion 27, the second projecting portion 28, and the opening 29 can be assembled to a groove block 30 formed of a U-shaped groove block. It can also be.

  FIG. 5 shows a plan view of the grating 1. FIG. 6 is a side sectional view of the grating 1. FIG. 7 is a partial cross-sectional view showing an installation state of the grating 1 in the groove block 2. FIG. 8 is a partial cross-sectional view showing a state where the grating 1 is assembled to the groove block 2.

  As shown in FIGS. 5, 6, 7 and 8, the grating 1 includes the grating main body 31 and a plurality of locking members 32. In the present embodiment, the grating 1 further includes raised bodies 33 and 34.

  The grating main body 31 can be placed on the first projecting portion 11 and the second projecting portion 12 in the groove block 2. In this embodiment, the grating main body 31 is indirectly placed on the first projecting portion 11 and the second projecting portion 12 via the raised bodies 33 and 34, and is raised by the raised bodies 33 and 34. In this state, the groove block 2 is installed.

  The grating main body 31 is composed of a metal member having a rectangular plate shape as a whole. Specifically, the grating body 31 includes a plurality of main bars 35, a plurality of cross bars 36, and a plurality of end plates 37. The plurality of main bars 35 and the plurality of crosses assembled in a lattice shape. The bar 36 is surrounded by the plurality of end plates 37.

  The raised bodies 33 and 34 enable the grating main body 31 to be installed in the opening 4 in a raised state. In the present embodiment, the raised bodies 33 and 34 are each formed on a horizontal plane so that the lower surfaces thereof correspond to the placement surface 17 of the first protrusion 11 and the placement surface 18 of the second protrusion 12. It is composed of a square pipe-shaped metal member.

  The raised bodies 33 and 34 have the same length as the grating body 31 in the longitudinal direction of the grating body 31. The raised bodies 33 and 34 are respectively arranged so as to extend along the grating main body 31 below one end and the other end in the short direction of the grating main body 31, and appropriate fixing means are provided at opposite ends. It is fixed using.

  Thus, the grating main body 31 is fitted into the opening 4 of the groove block 2 with its longitudinal direction aligned with the flow path direction, and the first projecting portion 11 and the The grating 1 can be installed in the groove block 2 by being placed in a raised state on the second protrusion 12 (see FIG. 7).

  As shown in FIGS. 5, 6, 7, and 8, the plurality of locking members 32 are attached to the grating main body 31, and the grating main body 31 is attached to the first protrusion 11 of the groove block 2. In order to restrict the upward movement (lifting) of the grating main body 31 when placed on the second protrusion 12, the first protrusion 11 or the second protrusion 12 can be locked from below. It is configured.

  In the present embodiment, four locking members 32 are provided as the plurality of locking members 32. The four locking members 32 are respectively attached to the four corners of the grating body 31, two acting on the first projecting portion 11 and the remaining two acting on the second projecting portion 12. Yes. Of the four locking members 32, the members acting on the same protrusions 11 and 12 are arranged at a predetermined interval.

  The plurality of locking members according to the present invention are four locking members in the present embodiment, but the number of locking members is not limited to this, and the number is appropriately set according to the shape of the grating main body and the like. Can be.

  The plurality of locking members 32 have substantially the same mounting structure with respect to the grating body 31 and are substantially the same with respect to the first projecting portion 11 or the second projecting portion 12. Has an effect. For this reason, the plurality of locking members 32 will be described with a focus on one locking member 32 acting on the first projecting portion 11, and detailed description of the remaining three locking members 32 will be omitted.

  FIG. 9A is a side view showing one state that the one locking member 32 can take with respect to the first protrusion 11. FIG. 9B is a side view showing another state that the locking member 32 can take with respect to the first protrusion 11. FIG. 10A shows a plan view corresponding to FIG. FIG. 10B shows a plan view corresponding to FIG.

  As shown in FIGS. 5, 6, 7, 8, 9 (a) and 9 (b), and 10 (a) and 10 (b), the locking member 32 includes a rod-like body 41, A rotating body 42 and a stopper 43 are provided.

The rod-shaped body 41 has an operation portion 46 disposed on one end side in the axial center direction of the rod-shaped body 41 and a screw portion 47 disposed on the other end side in the axial center direction of the rod-shaped body 41.
The rod-like body 41 is rotatably supported by the grating main body 31 in a penetrating state.

  The rotating body 42 includes a fastening portion 49 screwed with the screw portion 47 and a locking portion disposed on one side of the fastening portion 49 so as to be locked to the first projecting portion 11 from below. 50 and a contact portion 51 disposed on the other side of the fastening portion 49. The rotating body 42 is coupled to the rod-like body 41 so as to be integrally rotatable.

  The stopper 43 is configured to be able to contact the contact portion 51 of the rotating body 42 so as to regulate the rotation of the rotating body 42 so as to position the rotating body 42 at a predetermined rotational position.

  The locking member 32 rotates the operation portion 46 so that the rod-like body 41 as a whole rotates after the grating main body 31 is placed on the first projecting portion 11 and the second projecting portion 12. When the operation is performed, the rotation of the rotating body 42 that rotates together with the rod-like body 41, that is, the so-called rotating body 42 is regulated by the stopper 43 that contacts the contact portion 51.

  In addition, when the rotation of the operating portion 46 is further performed in a state where the rotation of the rotating body 42 is restricted by the stopper 43, the screw portion 47 of the rod-shaped body 41 is connected to the fastening member 32. Fastened to 49, the locking part 50 is configured to lock the first protruding part 11 from below so as to restrict the upward movement of the grating body 31.

  In this embodiment, the said rod-shaped body 41 is comprised from the volt | bolt. The rod-like body 41 has a midway portion in the longitudinal direction passing through the grating main body 31, whereby the operation portion (corresponding to the head of the bolt) 46 and the screw portion 47 sandwich the grating main body 31. It is provided to become. The operation unit 46 can be held by the grating main body 31.

  Specifically, a mounting seat 53 having a through hole for allowing the rod-shaped body 41 to pass therethrough is provided in the grating main body 31, and a longitudinal middle portion of the rod-shaped body 41 is rotatably inserted into the through hole. The rod-like body 41 has a diameter of the operation portion 46 larger than that of the through hole, and if the operation portion 46 does not contact the mounting seat 53, the shaft center of the through hole with respect to the mounting seat 53. It can move in the direction.

  Accordingly, when the grating main body 31 is installed in the groove block 2, the operation portion 46 is supported by the mounting seat 53, and the rod-like body 41 is prevented from dropping downward. Here, the rod-like body 41 moves the screw portion 47 to the mounting seat 53 while bringing the screw portion 47 to a position spaced apart from the locking surface 21 of the first projecting portion 11 toward the second side wall 8 side. It is supported rotatably.

  The rotating body 42 includes a rotating piece 55 made of a metal plate obtained by bending a vertically long rectangular metal flat plate into a crank shape, and a nut 56. The rotating body 42 is provided with the fastening portion 49 in the middle in the longitudinal direction of the rotating piece 55. The rotating body 42 includes the locking portion 50 on one end side in the longitudinal direction of the rotating piece 55, and the contact portion 51 on the other end side in the longitudinal direction of the rotating piece 55.

  The fastening portion 49 includes the nut 56. The nut 56 is fixed to a midway portion in the longitudinal direction of the rotary piece 55 so as to communicate with a through hole formed in the midway portion of the rotary piece 55 in the longitudinal direction. The nut 56 has a screw hole corresponding to the screw portion 47 of the rod-like body 41, and is provided so as to be screwable with the screw portion 47 that has passed through the through hole of the rotating piece 55.

  The locking portion 50 has a contact surface 57 formed on one end side in the longitudinal direction of the rotating piece 55. The contact surface 57 is formed of a curved surface positioned at a bent portion where the rotating piece 55 is bent, and is provided so as to extend in the short direction of the rotating piece 55. Thus, the locking portion 50 is configured to be able to come into line contact with the locking surface 21 of the first projecting portion 11 at the contact surface 57.

  The contact portion 51 is provided on the other end side in the longitudinal direction of the rotating piece 55. The contact portion 51 is disposed above the fastening portion 49 by bending of the rotating piece 55 and is configured to be able to contact the stopper 43. In the contact portion 51, a notch portion is provided at a corner portion facing when contacting the stopper 43.

  The stopper 43 is composed of an L-shaped metal piece. The stopper 43 is attached to the grating body 31 at the other extension portion so that one extension portion protrudes downward from the grating body 31. In the stopper 43, the one extending portion is disposed at a position spaced apart from the rod-like body 41 by a predetermined distance so as to be in contact with the contact portion 51.

  The stopper 43 is integrally formed with the mounting seat 53 in this embodiment.

  Therefore, when the locking member 32 is attached to the grating main body 31, as shown in FIG. 9A, in the state where the rotation of the rotating body 42 is not restricted by the stopper 43, the operating portion of the rod-shaped body 41. 10 is rotated in the direction of arrow 58 in FIG. 10A, the rotating body 42 is rotated with the rod-like body 41, and the rod-like body 41 is centered in the direction of arrow 59 in FIG. 10A. Rotate.

  9B, in a state where the rotation body 42 is in contact with the stopper 43 and the rotation is restricted, when the operation unit 46 is rotated in the direction of the arrow 58 in FIG. Since the rotating body 42 is not rotated and is held in a stopped state, the screw portion 47 is tightened. As a result, the rotating body 42 moves along the rod-like body 41 in a direction approaching the operation unit 46.

  When assembling the grating 1 to the groove block 2, first, the grating main body 31 to which the plurality of locking members 32 are attached is fitted into the opening 4 of the groove block 2. Thus, the grating 1 is installed in the groove block 2 so that the grating main body 31 is placed on the first projecting portion 11 and the second projecting portion 12 via the raised bodies 33 and 34.

  Further, at the time of installation, as shown in FIG. 7, with respect to each locking member 32, the threaded portion 47 of the rod-shaped body 41 and the rotating body 42 are connected to each other while holding the rotating body 42 at a predetermined accommodation position. The groove block 2 is accommodated in the internal space. The rotating body 42 screwed into the screw portion 47 does not interfere with the first projecting portion 11 or the second projecting portion 12 and does not hinder the accommodating operation as long as it is in the predetermined accommodating position.

  Next, the operating portion 46 on the grating main body 31 is rotated by hand tightening or the like, and the rotating body 42 is moved in the direction of the arrow 61A (or 61B) in FIG. 7 until the rotation is restricted by the stopper 43. Rotate. Accordingly, the rotating body 42 is moved to the predetermined rotation position, and the locking portion 50 is fixed to the locking surface 21 of the first protruding portion 11 (the locking surface 22 of the second protruding portion 12). Opposite with a gap.

  Then, the operation portion 46 of the rod-like body 41 is further rotated (tightened) using a predetermined tool. In this case, since the rotation of the rotating body 42 is restricted by the stopper 43, the rotating body 42 is held in a stopped state without rotating with the rod-shaped body 41. Therefore, the screw portion 47 is fastened to the fastening portion 49 of the rotating body 42 by further rotating operation of the operation portion 46.

  When the screw portion 47 is tightened to the fastening portion 49 by the further rotation operation, the rotating body 42 moves in the direction of the arrow 62A (62B) in FIG. 7, and the locking portion 50 is moved to the first projecting portion. 11 approaches the locking surface 21 (the locking surface 22 of the second protrusion 12) from below. Finally, the locking portion 50 is locked in line contact with the locking surface 21 (the locking surface 22) at the contact surface 57.

  Therefore, at the four corners of the grating body 31, the grating 1 takes the form in which the first protrusion 11 and the second protrusion 12 are sandwiched between the plurality of locking members 32 and the grating body 31 in the vertical direction. Can be fixed to the groove block 2 and the assembly of the grating 1 to the groove block 2 can be completed.

  With the configuration as described above, the assembly of the grating 1 can be carried out while reducing the number of parts necessary for assembling the grating 1 to the groove block 2. When assembling, the plurality of locking members 32 attached in advance to the grating main body 31 can be used, and the locking can be performed only by the rotation operation of the operation portion 46, thereby simplifying the work. Can be achieved. Therefore, workability at the time of assembling the grating 1 to the groove block 2 can be improved.

  In addition, since the grating 1 can be fixed relatively firmly to the groove block 2 after the assembly, when a large force is instantaneously applied to the grating 1 (for example, on the grating 1) Even when a large truck travels), the grating 1 can be prevented from jumping up. In addition, the rattling of the grating 1 can be suppressed, and noise caused by the grating 1 can be reduced.

  In addition, when the grating 1 is assembled to the groove block 2, the groove block 2 is not simply placed on the first projecting portion 11 and the second projecting portion 12, but the groove blocks are provided by the plurality of locking members 32. Since the state fixed to 2 is maintained, the grating 1 can be prevented from being easily lifted (by hand only) from the groove block 2. Therefore, the theft of the grating 1 can be suppressed.

  In the present embodiment, each of the locking portions 50 further has the contact surface 57 in line contact with the locking surface 21 of the first protruding portion 11 (the locking surface 22 of the second protruding portion 12). Therefore, it is possible to obtain a locking structure that makes it easy to bring the locking portion 50 into contact with the locking surface 21 (or 22). Therefore, when the locking surface 21 (or 22) has a slight difference in inclination angle, locking reliability can be improved.

  Moreover, although the locking structure in the present invention adopts line contact as described above in the present embodiment, it may be replaced with surface contact instead. For example, as shown in FIG. 11, the abutment capable of abutting on the locking surface 21 of the first protruding portion 11 or the locking surface 22 of the second protruding portion 12 on the locking portions 50 of the plurality of locking members 32. A surface 66 is provided.

  Then, the locking portion 50 is brought into surface contact with the locking surface 21 or the locking surface 22 at the contact surface 66 by the rotation operation of the operation portion 46 of the rod-shaped body 41 and can be locked. In this case, it is possible to obtain an advantage that the contact portion is relatively wide and the grating 1 can be stably fixed to the groove block 2 easily. In FIG. 11, the same reference numerals are assigned to the substantially same components as those of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Grating 2 Groove block 4 Opening part 7 1st side wall 8 2nd side wall 9 Top wall 11 1st protrusion part 12 2nd protrusion part 13 Space | gap 21 Locking surface of 1st protrusion part 22 Locking surface of 2nd protrusion part 24 1st side wall 25 2nd side wall 26 Bottom wall 27 1st protrusion part 28 2nd protrusion part 29 Opening part 30 Grating 31 Grating main body 32 Locking member 41 Rod-shaped body 42 Rotating body 46 Operation part 47 Screw part 49 Screw part 50 Engagement Stop part 51 Contact part 57 Contact surface 66 Contact surface

Claims (3)

First side wall and second side wall opposing each other,
Top wall or bottom wall connecting the said second sidewall and said first sidewall to form a groove,
A first protrusion protruding from the first side wall toward the second side wall ;
A first locking surface inclined in a downward direction from the top of the first protrusion toward the first side wall;
A second protrusion protruding from the second side wall toward the first side wall so that a gap is formed between the first protrusion and the first protrusion ;
A second locking surface inclined in a downward direction from the top of the second protrusion toward the second side wall; and
A groove block having an opening exposing said first protrusion and said second protrusion,
A grating assembly structure to the groove block , comprising a grating that can be assembled to the groove block from the opening,
The grating is
A grating body that can be placed on the first protrusion and the second protrusion;
A plurality of locking members attached to the grating main body and configured to be lockable to the first protrusion or the second protrusion;
Each locking member is
A rod-shaped body that has an operation portion disposed on one end side in the axial direction and a screw portion disposed on the other end side in the axial direction, and is rotatably supported in a penetrating state in the grating body;
The threaded portion and screwed fastening portion, located on one of the fastening portion so as to be engaged with the second locking face of said first locking surface and the second projecting portion in the first projecting portion And a rotating body having a contact portion arranged on the other side of the fastening portion and connected to the rod-shaped body so as to be integrally rotatable,
In order to position the rotating body at a predetermined rotational position, it has a stopper that can come into contact with the contact portion of the rotating body so as to restrict the rotation of the rotating body,
After the grating main body is placed on the first projecting portion and the second projecting portion, when the operation portion of the rod-shaped body is rotated, the rotation of the rotating body that rotates integrally with the rod-shaped body is performed. When the rotation of the operation portion is further controlled in the restricted state by the stopper that is in contact with the contact portion, the screw portion of the rod-like body is tightened to the fastening portion, and the upper portion of the grating body is moved upward. A structure for assembling a grating to a groove block, wherein the engaging portion is configured to be engaged with the first projecting portion or the second projecting portion from below to restrict movement . . The locking portion is
A contact surface that can be brought into line contact with the first locking surface of the first protruding portion or the second locking surface of the second protruding portion in order to lock the first protruding portion or the second protruding portion . The structure for assembling the grating to the groove block according to claim 1, comprising: The locking portion is
In order to engage with the first projecting portion or the second projecting portion, the abutment capable of being in surface contact with the first retaining surface of the first projecting portion or the second retaining surface of the second projecting portion . The structure for assembling the grating to the groove block according to claim 1, further comprising a surface.

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