JP5183523B2 - Grating connector - Google Patents

Description

  The present invention relates to a grating connecting tool for connecting adjacent gratings installed in parallel in the horizontal direction.

  A drainage ditch for draining rainwater is provided on a road or the like, and a grating covering the drainage ditch is provided in the drainage ditch. In general, the grating is formed by forming a bearing bar arranged parallel to each other at a predetermined interval and a cross bar arranged crossing the bearing bar and connecting the bearing bars in a lattice shape. Such a grating is continuously laid along the drainage groove so that the bearing bars at the ends are adjacent to each other. In such a grating, various grating couplers have been disclosed for the purpose of preventing theft or preventing jumping or lifting.

  The grating coupler shown in FIG. 6 of Patent Document 1 is a U-shape that is externally fitted across a pair of bearing bars at adjacent ends of the grating installed in parallel so as to be adjacent in the horizontal direction. A wrapping portion, a mounting portion that is connected to the inner bearing bar side from the lower end on one end side of the wrapping portion, and has a connecting hole formed at a substantially central position, and from the mounting portion to the inner bearing bar side And an L-shaped support rod provided with a male screw at its upper end. In this grating connector, the horizontal flange of the L-shaped support rod is brought into contact with the lower edge of the bearing bar pair at the adjacent end, and the enveloping portion of the metal fitting is connected to the bearing bar pair at the adjacent end. By fitting the holding piece with the upper edge of the inner bearing bar and inserting the male screw into the connecting hole of the mounting part and screwing and tightening the nut, Are sandwiched in the vertical direction to connect adjacent gratings.

  The grating scattering prevention metal fitting described in Patent Document 2 is not intended to prevent theft, jumping, and lifting, and the grating is scattered mainly due to metal fittings being damaged by metal fatigue under strong stress. This is to prevent this from happening. The anti-scattering fittings for the grating are an upper mounting body and a lower mounting body respectively arranged in the vertical direction of the pair of gratings installed in parallel so as to be adjacent to each other in the horizontal direction, and an extension for connecting the lower mounting body to these upper mounting bodies. And a connecting portion having return elasticity. The upper attachment body of this grating connecting tool includes a substantially U-shaped hook-shaped portion that holds and holds the lattice plates (bearing bars) at the adjacent ends of the adjacent grating together, and a hook-shaped portion. And a connecting plate part projecting in a lateral direction from the lower part on one side. Further, the lower mounting body includes a receiving plate portion that comes into contact with the lower end of the adjacent lattice plate of each adjacent lattice plate, and a latching portion that rises on both sides of the receiving plate portion and hooks on the side surface of the lattice plate. It has. In this scattering prevention metal fitting of the grating, the bolt of the connecting body with a coil spring having extension return elasticity is inserted into the bolt hole drilled in the connecting plate part of the upper mounting body and the receiving plate part of the lower mounting body, The bolts are screwed together with a proper tightening force by a nut provided on the lower surface of the lower mounting body to connect the grating. In this grating anti-scattering bracket, the upper mounting body and the lower mounting body are connected to each other by a connecting portion having elasticity for extension recovery, and the connecting portion having extension recovery elasticity is applied even if a force is applied to the grating in the spring-up direction. By absorbing the force in the flip-up direction, the metal fittings receive a strong stress and are prevented from being broken by metal fatigue, thereby preventing the scattering of the grating.

Utility Model Registration No. 2566605 Utility Model Registration No. 3081771

  In the grating coupler shown in FIG. 6 of Patent Document 1 described above, the metal fitting is externally fitted over a pair of bearing bars adjacent to each other from above, and the L-shaped support rod has its horizontal flange portion. Is in contact with the lower edge of the adjacent bearing bar pair at the end, but the movement of the bearing bar pair in the longitudinal direction is not restricted. However, if these are slightly loosened, these metal fittings and the L-shaped support rods can be moved little by little in the longitudinal direction of the bearing bar pair, and the nuts to which the L-shaped support rods are screwed may be further loosened and rattled. Further, if the nut for screwing the L-shaped support rod is tightened strongly, the wrapping portion and the holding piece portion of the metal fitting may be bent toward the mounting portion side, and there is a possibility that the locking of each portion to the bearing bar is released. In addition, since this grating connecting tool has the horizontal flange of the L-shaped support rod only in contact with the lower edge of the adjacent bearing bar pair at the lower end of the bearing bar pair, the grating pair is firmly fixed. It was not consolidated.

  On the other hand, in the grating scattering prevention metal fitting of Patent Document 2 described above, on the lower side of the grating, the lower side of the grating is in contact with the lower end of each of the lattice plates adjacent to each other at the end portions adjacent to each other. Are locked at two points, so that they are structurally more firmly connected than the above-mentioned grating coupler. However, the grating scattering prevention metal fittings are not intended to prevent theft and to prevent jumping and lifting, but the gratings are scattered mainly due to metal fittings being damaged by metal fatigue under strong stress. Therefore, the grating is not firmly connected by strongly tightening the bolt of the connecting portion.

  Therefore, as described in Patent Document 1, if this grating preventing metal fitting is firmly connected for the purpose of preventing theft, preventing jumping and lifting, if the bolt of the connecting part is strongly tightened, Although it is impossible to absorb the force in the spring-up direction due to the loss of elasticity for restoring the extension, it is considered that the grating can be firmly connected. However, since this anti-scattering metal fitting is bent so that the center portion has an obtuse angle so that the receiving plate portion of the lower mounting body does not contact the lattice plate at the adjacent end, the connecting portion When the bolts are tightened, the center part of the backing plate part is bent so as to be pulled upward, and the backing plate part comes into contact with each lattice plate at the end adjacent to each other and hits the lower end of the adjacent lattice plate. There is a risk of not coming into contact with each other, and as with the grating connecting tool described in Patent Document 1, the lower ends of the lattice plates adjacent to each other on the lower side of the grating are merely brought into contact with each other, and are firmly connected. There was a risk that it would be impossible. The present invention aims to solve such problems.

  In order to solve the above-mentioned problems, the present invention provides a grating in which bearing bars arranged parallel to each other at a predetermined interval and a cross bar arranged crossing these bearing bars and connecting these bearing bars are formed in a lattice shape. Is a connecting tool for connecting these adjacent gratings installed in parallel in the horizontal direction so that the bearing bars at the ends thereof are adjacent to each other, both of the ends of the adjacent one ends of the adjacent gratings. A first upper connecting member that clamps and holds the bearing bar from above, and that locks the adjacent bearing bar from the upper side to the other end of the bearing bar at one end of one of the gratings, and a cross bar And a second upper connecting member that is locked to the lower side of the adjacent grating and is supported so as to be movable in the vertical direction on both sides of the adjacent grating. A lower connecting member that engages with a bearing bar located on the other end side from both bearing bars at one end without engaging with a lower end of the aligning bar, and a second upper connecting member on the first connecting member The present invention also provides a grating connecting tool comprising a fastener for fastening the upper connecting member and the lower connecting member.

  In the grating connecting device configured as described above, the first upper connecting member sandwiches and holds both bearing bars at the ends of the adjacent ones of the adjacent gratings from the upper side, and either one of the gratings The adjacent bearing bar is locked from the upper side to the other end side of the bearing bar at the one end side, the second upper connecting member is locked to the cross bar, and the lower connecting member is the both bearings at the one end side. Since it is locked from the lower side to the bearing bar located on the other end side from the bar, the grating connecting tool does not move along the bearing bar, and the second upper connecting member and the lower upper connecting member are not moved. Since the fastener that fastens the side connecting member is less likely to loosen, the grating connecting tool does not rattle.

  In the grating connecting device configured as described above, the first upper connecting member has a substantially U-shape that opens downward, and holds both bearing bars at the end on one end side from above to lock. And a mounting portion formed to be coupled to the adjacent bearing bar side on the other end side from the lower end portion of the leg portion of the first hook portion, and to be coupled to the adjacent bearing bar side from the mounting portion. And a second hook portion that is formed and is engaged with the upper edge of the adjacent bearing bar. The second upper connecting member is provided on the upper side of the mounting portion of the first upper connecting member and is formed on both sides of the mounting portion. A plate-like engaging portion that engages with each leg portion of the first and second hook portions, and a lower portion formed by being coupled from one end side in a direction intersecting the first upper connecting member of the engaging portion. It consists of a crossbar locking part that has a substantially U-shape that opens to lock to the crossbar, The tie is fastened by tightening them in the vertical direction with screw members inserted through the through holes formed in the attachment portion of the first connecting member, the engaging portion of the second upper connecting member, and the lower connecting member, The second upper connecting member is provided so that the legs of the crossbar locking portion formed from the engaging portions are provided so as to be close to each other between the opposing legs of the first and second hook portions. For example, when the second upper connecting member and the lower connecting member are strongly fastened to the first upper connecting member by the screw member of the fastener, the first hook portion and the second hook portion are attached to the mounting portion. The leg portion of the crossbar locking portion of the second upper connecting member provided so that each leg portion of the first hook portion and the second hook portion is proximate to the first hook portion and the second hook portion to be bent so as to be pulled to the side. The first hook portion and the second hook portion are attached to the mounting portion Never be bent is pulled.

  In the grating connecting tool configured as described above, the second upper connecting member is formed with a bent portion bent upward from the other end side in the direction intersecting the first upper connecting member of the engaging portion, If the bent portion is provided between the leg portions of the first and second hook portions facing each other so as to be close to them, the first hook portion and the second hook portion are similar to those described above. The first hook portion and the second hook portion are not pulled and bent by the attachment portion side by abutting with the bent portion of the second upper connecting member provided so that the respective leg portions are close to each other. .

  In the grating connecting tool configured as described above, the lower connecting member extends in the direction in which the non-locking recesses that are not locked to the lower ends of both bearing bars at one end and the bearing bars are aligned. If a locking recess having a predetermined width is provided and the locking recess is locked from the lower side to the bearing bar located on the other end side than both bearing bars on the one end side, it is not locked Without being reliably locked to the lower ends of both bearing bars at the end by the recess, the locking recess is locked to the lower end of each of the adjacent bearing bars on the other end side and is firmly connected. Further, since the locking recess is a recess having a predetermined width extending in the direction in which the bearing bars are arranged, it is possible to lock even the bearing bars having different pitches.

It is a perspective view of the adjacent grating connected with the connection tool of the grating of this invention. It is sectional drawing of the state which connected the adjacent grating by the coupling tool of grating. It is sectional drawing in the AA of FIG.

  Hereinafter, an embodiment of a grating coupler according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the grating G connected by the connector according to the present invention includes a bearing bar B (B1, B2, B3...) And a bearing bar B arranged in parallel at a predetermined interval. And a cross bar C that is arranged so as to intersect with the bearing bar B is formed in a lattice shape. The grating connecting tool 10 according to the present invention sandwiches and holds both bearing bars B1 and B1 at the ends of the adjacent ones of the adjacent gratings G and G from the upper side, and also fixes one end of one of the gratings G. The first upper connecting member 20 that locks the adjacent bearing bar B2 from the upper side and the second upper connecting member 30 that locks to the cross bar C are adjacent to the other end side of the bearing bar B1 at the end on the side. The other side of the bearing bars B1 and B1 at the end of one end without being engaged with the lower ends of both ends of the bearing bars B1 and B1 supported on the lower side of the gratings G and G so as to be movable in the vertical direction. A lower connecting member 40 that is engaged with the bearing bars B2 and B2 positioned at the lower side, and a fastener 50 that fastens the second upper connecting member 30 and the lower connecting member 40 to the first connecting member 20. Characterized by comprising a. In the following, the grating connector 10 will be described in detail with the gratings G and G arranged in parallel so as to be adjacent in the horizontal direction.

  As shown in FIG. 2, the first upper connecting member 20 connects adjacent gratings G and G on the upper side, and sandwiches and holds both bearing bars B1 and B1 at one end side adjacent to each other. The first hook portion 21, the attachment plate portion (attachment portion) 22 formed in the horizontal direction from the lower end of the first hook portion 21, and one end formed in association with the attachment plate portion 22. The other end side of the bearing bar B1 at the side end portion is formed with a second hook portion 23 that is engaged with the adjacent bearing bar B2. The first hook portion 21 has a substantially U-shape that is open downward and is composed of an upper wall portion and leg portions that hang down from both ends of the upper wall portion. Both bearing bars B1 and B1 are sandwiched and locked from above. The mounting plate portion 22 extends from the lower end of one leg portion of the first hook portion 21 toward the bearing bar B2 adjacent to the other end side in the horizontal direction, and has a through hole 22a for mounting at the center portion thereof. Is formed. Further, when the first and second upper connecting members 20 and 30 are locked on the upper side of the gratings G and G, the mounting plate portion 22 has a height position where the head of the bolt 51 of the fastener 50 is grating. The height position does not protrude from the upper surface of G. The second hook portion 23 has a substantially U-shape that is open downward and includes an upper wall portion and leg portions depending from both ends of the upper wall portion. It extends from the opposite side and engages with the upper edge of the adjacent bearing bar B2.

  The second upper connecting member 30 is engaged with the cross bar C of the grating G so that the connector 10 does not move along the longitudinal direction of the bearing bar B1. The second upper connecting member 30 is formed by an engagement plate portion (engagement portion) 31 supported on the upper side of the mounting plate portion 22 of the first upper connection member 20 and the engagement plate portion 31. A substantially U-shaped crossbar locking portion 32 opened downward to be locked to the crossbar C, and bent upward from an end of the engagement plate portion 31 opposite to the side where the crossbar locking portion 32 is formed. The bent portion 33 is formed. The engaging plate portion 31 is formed on the upper side of the mounting plate portion 22 of the first upper connecting member 20 and is formed from both ends of the mounting plate portion 22 so as to be lower ends of the leg portions of the first and second hook portions 21 and 23. So that it does not rotate on the upper side of the first upper connecting member 20. The engaging plate portion 31 is formed with a through hole 31 a at the center thereof for attaching to the first upper connecting member 20 by the fastener 50. The through hole 31 a is substantially in the same position in the horizontal direction as the through hole 22 a of the mounting plate portion 22 of the first upper connecting member 20. Further, when the engaging plate portion 31 is engaged with the first and second upper connecting members 20 and 30 on the upper side of the gratings G and G, the height position thereof is the head of the bolt 51 of the fastener 50. The height position does not protrude from the upper surface of G. The crossbar locking part 32 rises from one end side in the direction intersecting the first connecting member 30 of the engaging plate part 31 and has a substantially U shape that opens downward. The crossbar locking part 32 has a slight gap between the leg part rising from the engagement plate part 31 and the leg parts of the first and second hook parts 21 and 23 of the first upper connecting member 20. It is a close position. The bent portion 33 is formed by bending upward from an end portion on the opposite side of the crossbar locking portion 32 of the engagement plate portion 31, and the bent portion 33 is formed by the first and the first of the first upper connecting member 20. The two hook portions 21 and 23 are close to each leg portion with a slight gap therebetween.

  The lower connecting member 40 is supported so as to be movable and rotatable in the vertical direction below the adjacent gratings G and G, and connects the lower sides of the adjacent gratings G and G. The lower connecting member 40 is a rectangular parallelepiped member that is elongated in the direction in which the bearing bar B is continuous and is open on the upper side. The side walls extending in the longitudinal direction have ends on one end side of one grating G adjacent to each other. The first recess 41 (locking recess) 41 that contacts and locks the adjacent bearing bar B2 on the other end of the bearing bar B1 and the bearing bar at the end of one end adjacent to the other grating G A second recess (locking recess) 42 that contacts and locks the adjacent bearing bar B2 on the other end side of B1, and the bearing bars B2 and B2 are locked to each other only in these recesses 41 and 42. A third recess (non-locking recess) 43 is formed so as not to lock the bearing bars B1 and B1 at the end portions adjacent to each other. The length of the first recess 41 in the direction in which the bearing bar continues is longer than the length of the bearing bar B2, and the length of the second recess 42 in the direction in which the bearing bar continues is longer than that of the first recess 41. It is formed long. Moreover, the 3rd recessed part 43 is formed so that the length of the direction where a bearing bar continues is longer than the length of both bearing bar B1, B1 of an edge part. These first to third recesses 41 to 43 are latched even when the bearing bars B1, B2, B3,... The length is possible. The height (depth) of the first recess 41 and the second recess 42 is shorter (shallow) than the height (depth) of the third recess 43, and the first recess 41 and the second recess 42 are When the lower end of the adjacent bearing bar B2, B2 is locked to the other end side of the bearing bar B1, B1 at the end on one end side, the third recess 43 is formed on both bearing bars B1, at the end on the one end side. It is not locked to the lower end of B1. A through hole 40 a is formed on the lower wall of the lower connecting member 40 to be attached to the first upper connecting member 20 by a fastener 50. The nut 52 of the fastener 50 is fixed to the lower surface of the lower connecting member 40 by welding so as to communicate with the through hole 40a. Instead of the nut 52, a screw may be directly formed in the through hole 40a.

  The fastener 50 includes a bolt 51 and a nut 52, and the bolt 51 is engaged with the upper surface of the engagement plate portion 31 of the second upper connecting member 30 and the screw portion is engaged with the second upper connecting member 30. The through hole 31 a of the plywood part 31, the through hole 22 a of the mounting plate part 22 of the first upper connecting member 20, and the through hole 40 a of the lower connecting member 40 are inserted and the lower ends thereof are screwed by nuts 52. The fastener 50 presses the first and second upper connecting members 20 and 30 downward against the adjacent gratings G and G from the upper side by screwing the bolt 51 to the nut 52 and tightens the lower connecting member 40. The adjacent gratings G and G are pressed upward from the lower side, and the adjacent gratings G and G are connected by the first and second upper connecting members 20 and 30 and the lower connecting member 40. Thus, the adjacent gratings G and G connected by the grating coupler 10 are moved in the direction in which the gratings G and G in the upper direction and the horizontal direction are continuous by the first hook portion 21 of the first upper connection member 20. The movement is restricted, and the first and second recesses 41 and 42 of the lower connecting member 40 are firmly held in a state where the movement in the direction in which the gratings G and G in the lower direction and the horizontal direction are continuous is restricted. The

  Next, an attachment procedure for connecting the gratings G and G, which are installed in parallel in the horizontal direction so that the bearing bars B1 and B1 at the end on one end side are close to each other, with the grating coupler 10 configured as described above. Will be described. First, in the grating connector 10, the through holes 31 a of the second upper connecting member 30, the through holes 22 a of the first upper connecting member 20, and the through holes 40 a of the lower connecting member 40 are previously formed in the screw portions of the bolts 51. The lower end portion of the screw portion of the bolt 51 is screwed into the nut 52 fixed to the lower connecting member 40 in order. Holding the head of the bolt 51, the lower connecting member 40 is inserted between the bearing bar B1 at one end of one grating G and the bearing bar B2 adjacent to the other end of the bearing bar B1. It moves so that it may become the lower side of the adjacent gratings G and G. Moreover, in both upper sides of both gratings G and G, the 1st hook part 21 of the 1st connection member 20 is both bearing bar B1 of the edge part of one end side. , B1 is sandwiched and locked from above, and the second hook portion 23 is locked to the bearing bar B2 adjacent to the other end of the bearing bar B1 at one end from above. In addition, the cross bar locking portion 32 is locked to the cross bar C from above so that the engaging plate portion 31 of the second upper connecting member 30 contacts the upper surface of the mounting plate portion 22 of the first upper connecting member 20. .

  In such a state, an elongated rod-like tool is inserted like a screwdriver from between the bearing bars B from the upper side of the grating G, and the direction in which the concave portions 41 to 43 of the lower connecting member 40 are arranged is the bearing bars B1, B2. When the positioning is performed by rotating in the direction in which the first and second alignment lines are aligned, the first recess 41 is positioned below the bearing bar B2 next to the bearing bar B1 at the end of one grating G, and the second recess 42 is positioned at the other side. The position of the end of the grating G is the lower side of the bearing bar B2 adjacent to the bearing bar B1, and the third recess 43 is the position of the lower side of both bearing bars B1, B1.

  When the bolt 51 is rotated and tightened from the upper side of the grating G with the above-described tool such as a screwdriver so that the lower connection member 40 is not rotated, the lower side is lowered by the nut 52 screwed into the bolt 51. The connecting member 40 moves upward. When the bolt 51 is further rotated and tightened, the first and second recesses 41 and 42 of the lower connecting member 40 are adjacent to the other end side of the bearing bar B1 and B1 at the end on one end side, and the bearing bar B2 and the other side. B2 is contacted from below and locked. Accordingly, the grating connecting tool 10 restricts the movement of both the gratings G and G in the upward and horizontal directions by the first hook portion 21 of the first connecting member 20 on the upper side of the gratings G and G. The connecting member 30 restricts and connects both the gratings G and G in the downward and horizontal directions. Further, since the grating connector 10 is locked to the crossbar C by the crossbar locking portion 32 of the second upper connecting member 30, it does not move along the bearing bar, and the first upper connecting member Since the fastener 50 that fastens the second upper coupling member 30 and the lower coupling member 40 to 20 is less likely to loosen, the grating coupling 10 does not rattle.

  In the grating connector 10 configured as described above, the first upper connecting member 20 has a substantially U-shape that opens downward, and the both end bearing bars B1 and B1 at one end are sandwiched from above. The first hook portion 21 to be stopped, the mounting plate portion 22 formed continuously from the lower end portion of the leg portion of the first hook portion 21 to the adjacent bearing bar B2 side on the other end side, and the mounting plate portion The second upper connecting member 30 is formed of a second hook portion 23 that is formed on the side of the adjacent bearing bar B2 and is engaged with the upper edge of the adjacent bearing bar B2. A plate-like engagement plate portion 31 which is provided on the upper side of the attachment plate portion 22 and engages with the respective leg portions of the first and second hook portions 21 and 23 formed on both sides of the attachment plate portion 22; One of the directions intersecting the first upper connecting member 20 of the engagement plate portion 31 The fastener 50 is a mounting plate portion of the first connecting member 20 formed of a crossbar locking portion 32 that is formed from the side and has a substantially U-shape that opens downward and locks to the crossbar C. 22 and the engagement plate portion 31 of the second upper connecting member 30 and the bolts 51 inserted through the respective through holes 22a, 31a, 40a formed in the lower connecting member 40, and tightening them in the vertical direction. If the leg portions of the crossbar locking portion 32 coupled from the plywood portion 31 are provided so as to be close to each other between the leg portions of the first and second hook portions 21 and 23 facing each other, When the second upper connecting member 30 and the lower connecting member 40 are strongly fastened to the first upper connecting member 20 by the bolts 51 of the fasteners 50, the first upper connecting member 20 has the first hook portion 21 and the second hook portion. 23 is pulled toward the mounting plate 22 side. The crossbar locking portion 32 of the second upper connecting member 30 provided between the leg portions of the first hook portion 21 and the second hook portion 23 so as to be close to these legs is bent. By abutting with the leg portion, the first hook portion 21 and the second hook portion 23 are not pulled and bent toward the mounting plate portion 22 side.

  In the grating connecting tool 10 configured as described above, the second upper connecting member 30 is bent upward from the other end side in the direction intersecting the first upper connecting member 20 of the engagement plate portion 31. 33, and the bent portion 33 is provided between the leg portions of the first and second hook portions 21 and 23 facing each other so as to be close thereto, as described above. The first hook portion 21 and the second hook portion 23 are brought into contact with the bent portion 33 of the second upper connecting member 30 provided so as to be close to the leg portions of the first hook portion 21 and the second hook portion 23. The second hook portion 23 is not bent by being pulled toward the mounting plate portion 22 side.

  In the grating connector 10 configured as described above, the lower connecting member 40 is arranged with the third recess 43 and the bearing bar B so as not to be engaged with the lower ends of the bearing bars B1 and B1 at the ends. The first and second recesses 41 and 42 having a predetermined width extending in the direction are provided, and the first and second recesses 41 and 42 are located on the other end side from both bearing bars B1 and B1 at the end on one end side. If the bearing bar B2 to be engaged is locked from the lower side, the first and second recesses 41 and 42 are not securely locked by the third recess 43 with the lower ends of the bearing bars B1 and B1 at the ends. As a result, the other end side is firmly connected to the lower end of each of the adjacent bearing bars B2 and B2. Further, since the first and second recesses 41 and 42 are recesses having a predetermined width extending in the direction in which the bearing bars B are arranged, even the bearing bars B having different pitches can be locked.

  In the above embodiment, the first and second recesses 41 and 42 of the lower connecting member 40 are in contact with and locked to the lower ends of the bearing bars B2 and B2 adjacent to the bearing bars B1 and B1 at the ends. However, the present invention is not limited to this, and it is also possible to make contact with the other bearing bar B3, B4,..., B3, B4,. An effect can be obtained.

  G ... Grating, B (B1, B2, B3 ...) ... Bearing bar, C ... Cross bar, 10 ... Grating connector, 20 ... First upper connecting member, 21 ... First hook portion, 22 mounting portion ( Mounting plate part), 23 ... second hook part, 30 ... second upper connecting member, 31 ... engaging part, 32 crossbar locking part, 40 ... lower connecting member, 41, 42 ... locking recess (first Recess, second recess), 43... Non-locking recess (third recess), 50.

Claims (4)

Gratings in which a bearing bar arranged in parallel with a predetermined distance from each other and a cross bar arranged so as to cross these bearing bars and connecting these bearing bars are formed in a lattice shape are adjacent to each other at the end bearing bar. A connecting tool for connecting these adjacent gratings installed in parallel in the horizontal direction,
The bearing bars adjacent to one end side of the adjacent grating are sandwiched and locked from above, and the bearing adjacent to the other end side of the bearing bar at the one end side of any one of the gratings. A first upper connecting member for locking the bar from above;
A second upper connecting member that locks to the crossbar;
A bearing which is supported on the lower side of the adjacent grating so as to be movable in the vertical direction and is positioned on the other end side from both bearing bars at the one end without engaging with the lower ends of the two bearing bars at the end. A lower connecting member that is locked to the bar from below;
A grating connecting tool comprising a fastener for fastening the second upper connecting member and the lower connecting member to the first connecting member. The grating coupler according to claim 1,
The first upper connecting member has a substantially U-shape opened downward, and sandwiches and holds both bearing bars at the end on the one end side from above, and a leg portion of the first hook portion An attachment portion formed continuously from the lower end portion to the adjacent bearing bar side on the other end side, and formed from the attachment portion to the adjacent bearing bar side to form the adjacent bearing bar side. It consists of a second hook part that locks to the upper edge,
The second upper connecting member is a plate-like member that is provided above the attachment portion of the first upper connection member and engages with the leg portions of the first and second hook portions formed on both sides of the attachment portion. A cross formed in an engagement portion and a substantially U-shape that is formed from one end side in a direction intersecting the first upper connecting member of the engagement portion and opens downward, and is engaged with the cross bar. It consists of a bar locking part,
The fastener is fastened by tightening them in the vertical direction by screw members inserted through the through holes formed in the attachment portion of the first connecting member, the engaging portion of the second upper connecting member, and the lower connecting member. Is,
The second upper connecting member is configured so that the legs of the crossbar locking portion formed from the engaging portions are close to each other between the opposing leg portions of the first and second hook portions. A grating connector characterized by being provided. The grating coupler according to claim 2,
The second upper connecting member is formed with a bent portion bent upward from the other end side in the direction intersecting the first upper connecting member of the engaging portion,
The grating connecting tool, wherein the bent portion is provided between the leg portions of the first and second hook portions facing each other so as to be close thereto. In the connection tool of the grating according to any one of claims 1 to 3,
The lower connecting member includes a non-locking recess that prevents locking with the lower ends of both bearing bars at the end on the one end side, and a locking recess with a predetermined width that extends in a direction in which the bearing bars are arranged. A grating connecting tool characterized in that this locking recess is locked from the lower side to a bearing bar located on the other end side from both bearing bars on the one end side.

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