JP2019049099A - Iron plate connector - Google Patents

Abstract

To provide an iron plate connector capable of strongly connecting iron plates by applying a restraining force to the iron plates easily and evenly, without unevenness, and without enlarging the iron plate coupler itself.SOLUTION: An iron plate connector (100) consists of iron plates (10, 10') being adjacent to each other and sandwiched between an upper plate (20) and a lower plate (30) both having a prescribed shape. The upper plate (20) and the lower plate (30) are both substantially line symmetrical to two substantially orthogonal lines at the center of the prescribed shape. The upper plate (20) comprises: a set screw (41) for pressing the iron plates (10, 10') adjacent to each other in the vicinity of both ends of one of the two substantially orthogonal lines; and a bolt (40) for coupling the upper plate (20) and the lower plate (30) in the vicinity of both ends of the other one of the two substantially orthogonal lines.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an iron plate connector used when connecting temporary iron plates at a construction site or the like.

  Conventionally, in construction sites etc., a plurality of underlayment plates are laid in a temporary installation passage of a construction vehicle or construction machine, and in order to suppress displacement or fluttering of the underlayment plates, the respective underlayment plates are welded with flat steel The floor plate was connected by using a special connection fitting.

  For example, in Patent Document 1, as shown in FIG. 15 (a), the base plates (5, 5 ') connected to each other are sandwiched between the upper fixing portion (1) and the lower fixing portion (4). The invention of a road-bed iron plate connector is disclosed, which is tightened with a high-strength bolt (12) and further sandwiching a floor plate (5, 5 ') by means of screw rods (8, 8').

  Further, in Patent Document 2, as shown in FIG. 15 (b), the joint iron plates (1) connected to each other are sandwiched between the joint substrate (3) and the pressing plate (4), and the joint substrate (3) The invention of the joint structure of the sole plate is disclosed, in which the sole plate (1) is connected by fastening the press plate (4) and the pressing plate (4) by the fastening bolt (5).

  Further, in Non-Patent Document 1, as shown in FIG. 16, the baseplates connected to each other are sandwiched between the upper plate and lower plate having sharp pins, and the upper plate is hammered against the baseplate with a hammer to make the pins A connection fitting is disclosed which connects the soleplate by biting into the soleplate and then tightening it with a clamping bolt.

Japanese Patent Application Laid-Open No. 10-131110 Registered Utility Model No. 3005968 Consent Lentem, "LINK PLATE", [online], Consent Inc., [Search on July 11, 2017], Internet <URL: http://www.kyosei-rentemu.co.jp/Product/ 6 / 6-56.html>

  However, none of the conventional connection metal fittings of the conventional base metal plate described above have sufficient restraining force to the base metal plate, and while the vehicle repeatedly travels on the base metal plate, the connection metal fitting may be detached from the base metal plate or the connection metal fitting itself Was damaged. For example, in the conventional example illustrated in FIG. 15 (a), since the upper fixing portion (1) and the lower fixing portion (4) are fastened at only one point in the center of the connection fitting, restraint in the vicinity of the connection fitting center The power is weak. Further, in the conventional example shown in FIG. 15 (b), the joint substrate (3) and the pressing plate (4) are fastened by two bolts near the center of the connection fitting, and the conventional example shown in FIG. 15 (a) Although the restraining force in the vicinity of the center of the connection fitting is stronger than in the example, since the floor plate is held only by the restraining force by the two bolts, the floor plate near the end of the connection fitting is near the end of the connection fitting. Restraint force is very weak. That is, the said conventional connection metal fitting was not able to restrain a laying iron board equally uniformly in the said whole connection metal fitting.

  Furthermore, as described above, since the conventional connection metal fitting is not uniformly restrained in the entire connection metal fitting uniformly, for example, as shown in the longitudinal sectional view of FIG. There is also a problem that when the steel plates are inclined to each other, the connection fitting can not be used. Further, in the prior art illustrated in FIG. 16, the pins are crushed by repeatedly striking the upper plate, and the upper plate itself has to be replaced each time.

  Therefore, in the present invention, it is possible to connect the iron plates firmly by applying a restraining force to the iron plates evenly and evenly, without increasing the size of the iron plate connecting tool itself as compared with the conventional connection fitting. It is an object of the present invention to provide an iron plate connector.

(1) Iron plate connector (iron plate) in which iron plates (base plates 10 and 10 ') adjacent to each other are held between an upper plate (upper plate 20) and a lower plate (lower plate 30) both having predetermined shapes The connecting member 100), wherein the upper plate (upper plate 20) and the lower plate (lower plate 30) are both substantially line symmetrical to two lines substantially orthogonal to each other at the center of the predetermined shape, The upper plate (upper plate 20) is a set screw (with a hexagonal hole) for pressing the iron plates (slab plates 10, 10 ') adjacent to each other in the vicinity of one end of one of the two substantially orthogonal lines. A bolt (hexagon bolt 40) for fastening the upper plate (upper plate 20) and the lower plate (lower plate 30) in the vicinity of both end portions of the other of the two substantially orthogonal lines of the set screw 41). And an iron plate connector.

  According to the configuration of the above (1), for example, as shown in FIG. 5A, hexagonal socket set screws 41 are provided in the vicinity of one end of one of two substantially orthogonal lines at the center of the upper plate 20. Since the hexagonal bolts 40 are provided in the vicinity of both ends of the other of the above two lines, the upper plate 20 and the lower plate 30 as a whole are uniformly and uniformly restrained to the floor plates 10 and 10 '. You can apply power. Furthermore, according to the above configuration, as shown in FIG. 5A, for example, in the planar shape of the upper plate 20 and the lower plate 30, the distance from the center position of the hexagonal bolt 40 to the hexagonal socket set screw 41 (shown Since it is possible to secure a longer length L), the steel plate connecting tool 100 is removed more than in the prior art by securing a larger holding range (length L in the figure L) of the base steel plates 10 and 10 '. While being able to make it hard, as it is shown in FIG. 6, it becomes possible to connect bottom iron plate 10 and bottom iron plate 10 'which incline mutually.

(2) In the upper plate (upper plate 20), a set screw hole (set screw hole 21) into which the set screw (hexagonal socket set screw 41) is screwed, and the bolt (hexagon bolt 40) are inserted Bolt insertion holes (bolt insertion holes 22) are formed, and bolt screw holes (bolt screw holes 32) into which the bolts (hexagonal bolts 40) are screwed are formed in the lower plate (lower plate 30). The iron plate connector according to the above (1).

  According to the configuration of the above (2), for example, as shown in FIGS. 5 (b) and 5 (c), the upper plate 20 and the lower plate 30 are firmly fastened by two hexagonal bolts 40, and further hexagonal holes It is possible to firmly hold the steel plate 10, 10 'by the tacking set screw 41. In addition, even if the tip of the hexagonal socket set screw 41 is crushed by repeatedly inserting the hexagonal socket set screw 41 into the floor plate 10, 10 ', the upper plate 20 is not replaced. Since only the hexagonal socket set screw 41 needs to be replaced with a new one, maintenance costs can be reduced.

(3) In at least one of the bolt insertion holes (bolt insertion hole 22), the bolt (hexagonal bolt 40) is inserted through the bolt insertion hole (bolt insertion hole 22), and the upper plate (upper plate 20) The iron plate connector according to (2), wherein the upper plate (upper plate 20) is formed movably out of the mounting range of the iron plate in a state in which the lower plate (lower plate 30) is temporarily tightened. .

  According to the configuration of the above (3), as shown in FIGS. 9 to 11, at least one bolt insertion hole is formed as a long hole (shown in FIG. 22A) or the installation position of at least one hexagonal bolt 40 is iron plate By providing the upper plate 20 and the lower plate 30 with the hexagonal bolt 40 temporarily by providing them in the vicinity of the end of the connector 100, the upper plate 20 may be arranged as illustrated on the floor plate 10 already mounted. Since this becomes possible, the upper plate 20 can be smoothly placed without being disturbed when the other floor plate 10 'is placed. Further, as shown in FIGS. 9 (c), 10 (c) and 11 (c), by temporarily tightening the hexagonal bolt 40, the iron plate connector 100 is temporarily attached to the floor plate 10 already placed. Since it can stop, the situation which lower board 30 slips can be prevented at the time of mounting of other floor board 10 '.

It is the top view and longitudinal cross-sectional view which show an example of the connection aspect of the sole plate by the steel plate connector of this invention. It is the top view and sectional drawing which show an example of an upper board structure in the iron plate coupling tool of this invention. It is the top view and sectional drawing which show an example of a lower plate structure in the iron plate coupling tool of this invention. The iron plate connector of this invention WHEREIN: It is a top view and a schematic cross section which show an example when an upper board and a lower board are fastened. In an iron plate connector of the present invention, it is a top view and a sectional view showing an example when an upper plate and a lower plate are fastened and a setting plate is held. It is a longitudinal cross-sectional view and a schematic cross section which show an example of the connection aspect of sloping base-plates in the iron plate connector of this invention. It is a state transition top view which shows an example of the connection procedure of a sole plate by the iron plate connector of this invention. It is the top view and sectional drawing which show an example of a top plate structure in another Example of this invention. It is a state transition top view which shows an example of the procedure which connects a steel plate by the iron plate coupling tool by another Example of this invention. It is a state transition top view which shows an example of the procedure which connects a steel plate by the iron plate coupling tool by another Example of this invention. It is a state transition top view which shows an example of the procedure which connects a steel plate by the iron plate coupling tool by another Example of this invention. It is the top view and sectional drawing which show an example of a steel plate coupler in another Example of this invention. It is the top view and sectional drawing which show an example of a steel plate coupler in another Example of this invention. It is the top view and sectional drawing which show an example of a steel plate coupler in another Example of this invention. It is a figure which shows the connection metal fitting (patent document 1, patent document 2) of the conventional underlaying board. It is a figure which shows the connection metal fitting (nonpatent literature 1) of the conventional foundation plate.

  Hereinafter, the iron plate connector of the present invention will be described with reference to the drawings.

  As a usage example of the iron plate connector according to the present invention, FIG. 1 shows an aspect in which the steel plate connectors 10 adjacent to each other are connected by the iron plate connector 100. As shown in the plan view of FIG. 1 (a), iron plate connectors 100 are disposed at appropriate positions of the plurality of floor plates 10 to be laid, and the floor plates 10 adjacent to each other are connected. Further, as shown in the longitudinal sectional view of FIG. 1 (b), the iron plate connector 100 can also firmly connect the floor plates laid so as to be inclined to each other by the structure of the iron plate connector 100 described later. It is possible.

(Member configuration of iron plate connector 100)
The iron plate connector 100 of the present invention, as shown in FIG. 5, is constituted by a pair of upper plate 20 and lower plate 30 sandwiching the tie plate 10 'adjacent to the tie plate 10, as shown in FIG. 3 shows the structural details of the upper plate 20 and lower plate 30 of the iron plate connector 100 in the present embodiment.

  As shown in FIG. 2, the upper plate 20 of the present embodiment is formed in a substantially square shape having a predetermined thickness, and two bolt insertion holes 22 are formed in the vicinity of both diagonally opposite end portions of the upper plate 20, Furthermore, two set screw holes 21 are formed in the vicinity of both end portions on the diagonal line substantially orthogonal to the diagonal line.

  Further, a bolt recess 23 is formed around the bolt insertion hole 22 so that the head of the attached bolt 40 does not protrude from the upper surface of the upper plate 20. By forming the bolt recess 23, it is possible to prevent the hexagonal bolt 40 from being loosened by repeated passes of the vehicle or the construction machine. In addition, an upper plate tapered portion 24 is formed around the upper plate 20, so that passing of a vehicle or the like can be smoothly performed, and a large force in a horizontal direction with respect to the upper plate 20 when the vehicle or the like travels. Is configured not to join.

  In this embodiment, the thickness t of the upper plate 20 is approximately 16 mm and the width W1 is approximately 120 mm, and the distance W2 between the bolt insertion holes 22 and the distance W3 between the set screw holes 21 are 90 mm. The dimensions are not limited to the dimensions, and can be set as appropriate. Further, although the upper plate 20 is made of cast iron and plated in the present embodiment, it is not necessarily limited to such a material.

  Subsequently, FIG. 3 shows the structural details of the lower plate 30 of the iron plate connector 100 in the present embodiment. As shown in FIG. 3, the lower plate 30 is formed in a substantially square shape having the same thickness t and width W 1 dimensions as the upper plate 20, and the lower plate 30 corresponds to the bolt insertion hole 22 of the upper plate 20. Two bolt screw holes 32 are formed.

  Further, two iron plate positioning protrusions 35 are provided in a projecting manner between the two bolt screw holes 32, and as shown in FIG. 5 (b), the floor plate 10 and the floor plate 10 'connected to each other abut It is configured to be possible. In addition, a lower plate tapered portion 34 is formed around the lower plate 30, whereby, for example, the lower plate 30 is placed between a floor plate laid on the ground and the ground plane of the floor plate. When plugging in, it will be possible to plug in smoothly.

  In the present embodiment, the thickness t of the lower plate 30 is approximately 16 mm and the vertical and horizontal width W1 is approximately 120 mm, and the iron plate positioning projection 35 has a horizontal width W4 of 16 mm, a vertical width W5 of 18 mm, and a height h of 18 mm. However, the present invention is not limited to the above-mentioned respective dimensions, and can be appropriately set in accordance with the thickness and the like of the floor plates 10 and 10 'connected to each other. Further, although the lower plate 30 is made of cast iron and plated in the present embodiment, it is not necessarily limited to such a material.

  FIG. 4 shows a plan view and a schematic cross-sectional view of the iron plate connector 100 in which the upper plate 20 and the lower plate 30 are assembled. As shown in the drawing, the upper plate 20 and the lower plate are inserted by inserting two half screw hexagonal bolts 40 into the bolt insertion holes 22 of the upper plate 20 and screwing into the bolt screw holes 32 of the lower plate 30. And 30 are assembled. In addition, a hexagonal hole set screw 41 is screwed into the set screw hole 21 of the upper plate 20. In addition, as shown in FIG. 4 (b), the hexagonal socket set screw 41 is configured not to protrude from the upper surface of the upper plate 20, and the hexagonal socket set screw by repeated passing of a vehicle or a construction machine It is possible to prevent the situation in which 41 is loosened.

  Further, in the present embodiment, although both the hexagonal bolt 40 and the hexagonal socket set screw 41 have the nominal diameter M12, the nominal diameter M12 is not necessarily limited to the nominal diameter M12. In addition, types of bolts and set screws can be changed as appropriate. Furthermore, high tension compatible material may be used as the material of the bolt and the set screw.

  In FIG. 5, the connection aspect of the floor plate 10 and the floor plate 10 'by the plate connector 100 is shown by a plan view and a cross-sectional view. As shown in the drawing, the floor plate 10 and the floor plate 10 'connected to each other are placed on the lower plate 30 so as to abut on the iron plate positioning projections 35 provided in the lower plate 30, and two hexagonal bolts By tightening 40, the base plate 10, 10 'is strongly held between the upper plate 20 and the lower plate 30. Furthermore, the two hex socket set screws 41 are tightened, so that the tip of the hex socket set screw 41 firmly bites into the bottom plate 10 and the bottom plate 10 ′ and strongly narrows with the lower plate 30. As it is held, it is possible to strongly connect the base plates 10, 10 'without being affected by the distortion of the base plate 10, 10' and the like as compared with the conventional connection fitting.

  Further, as shown in FIG. 5A, the hexagonal socket set screw 41 is provided in the vicinity of both diagonal ends of the upper plate 20, and the diagonal line substantially orthogonal to the diagonal on which the hexagonal socket set screw 41 is provided. Since the hexagonal bolt 40 is provided in the vicinity of both ends, the upper plate 20 and the lower plate 30 as a whole can apply a restraining force to the iron plate uniformly.

  Furthermore, according to the above configuration, as shown in FIG. 5A, in the planar shape of the upper plate 20 and the lower plate 30, the distance from the center position of the hexagonal bolt 40 to the hexagonal socket set screw 41 (shown in FIG. Long), so it is more difficult to remove the iron plate connector 100 than in the prior art by securing a larger holding range (length L in the drawing L) of the steel plate 10, 10 '. As shown in FIG. 6, it is possible to connect the base plate 10 and the base plate 10 ', which are inclined to each other. Further, as in the present embodiment, by forming the upper plate 20 and the lower plate 30 in a substantially square shape, useless portions are reduced in restraining the base plate as compared with the conventional circular or rectangular connection fitting. It becomes possible to peel off and to control the material cost of iron plate connector 100 itself.

(Connection method by iron plate connection tool 100)
Hereinafter, based on the connection state transition diagram of the iron plate connector 100 shown by FIG. 7, the connection method of the steel plate 10,10 'by the iron plate connector 100 is demonstrated.

  In the connection method shown in FIG. 7A, first, the floor iron plate 10 is disposed on the installation ground surface. Then, the lower plate 30 is inserted between the lower surface of the floor plate 10 disposed and the ground surface, and the end of the floor plate 10 is brought into contact with the iron plate positioning projection 35 (a1). Next, the floor plate 10 'is placed on the upper surface on the left side of the lower plate 30, and the end portion of the floor plate 10' is placed in contact with the iron plate positioning projection 35 (a2). Thereafter, the upper plate 20 is disposed above the lower plate 30, and the mounting plate 10, 10 'is held between the upper plate 20 and the lower plate 30 by tightening the hexagonal bolt 40 with a predetermined torque. Further, the hexagonal socket set screw 41 is tightened to hold the steel plate 10, 10 '(a3).

  In the connection method shown in FIG. 7 (b), first, the floor steel plate 10 is placed on the installation ground surface. Then, while inserting the lower plate 30 between the lower surface of the floor plate 10 arranged and the ground surface, the end of the floor plate 10 is brought into contact with the iron plate positioning projection 35 (b1). Next, the upper plate 20 and the lower plate 30 are temporarily tightened by one hexagonal bolt 40 and fastened. Thereafter, the upper plate 20 is rotated about the temporarily fixed hexagonal bolt 40, and moved to the position shown in FIG. 7 (b2) (b2). By moving the upper plate 20 in this manner, it is possible to easily place the floor plate 10 ′ on the upper surface on the left side of the lower plate 30. Further, since the iron plate connecting tool 100 is temporarily fixed to the floor plate 10 already placed, it is possible to prevent the lower plate 30 from being shifted or detached while placing the floor plate 10 '. . Subsequently, when mounting of the steel plate 10 'is completed, the upper plate 20 is rotated to a fastening position with the lower plate 30, and the other hexagonal bolt 40 is attached, and each hexagonal bolt 40 is tightened with a predetermined torque. Between the upper plate 20 and the lower plate 30 to hold the iron plate 10, 10 '. Further, the hexagonal socket set screw 41 is tightened to hold the steel plate 10, 10 '(b3).

(Other modifications)
As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to the above-mentioned embodiment.

(Modification 1)
For example, FIG. 8 shows an embodiment in which a bolt insertion hole formed in the upper plate 20 of the iron plate connector 100 is a long hole. That is, as shown in the plan view and the A-A cross sectional view of FIG. 8A, at least one bolt insertion hole of the two bolt insertion holes formed in the upper plate 20 is a long hole. A bolt insertion hole 22A is formed, and a slide bolt recess 23A is formed around the long hole bolt insertion hole 22A so that the head of the hexagonal bolt 40 can move. As a result, as shown in FIGS. 8B and 8C, the upper plate 20 and the lower plate 30 can be slid left and right in a state of being temporarily tightened by the hexagonal bolt 40.

  FIG. 9 shows a connection state transition diagram of the iron plate connector 100 in which the upper plate 20 is configured to be slidable as described above. First, the steel plate 10 is placed on the installation ground surface. Then, while inserting the lower plate 30 between the lower surface of the floor plate 10 disposed and the ground surface, the end portion of the floor plate 10 is brought into contact with the iron plate positioning projection 35 (a). Next, the long plate bolt insertion holes 22A of the upper plate 20 and the bolt screw holes 32 of the lower plate 30 are aligned as shown in FIG. ). Thereafter, as shown in FIG. 9C, the floor plate 10 'is placed on the upper surface on the left side of the lower plate 30, and the upper plate 20 is rotationally moved along the illustrated arrow (d). After the rotational movement, the other hexagonal bolt 40 is attached, and by tightening each hexagonal bolt 40 with a predetermined torque, the underlayment plates 10 and 10 'are held between the upper plate 20 and the lower plate 30. Further, the hexagonal socket set screw 41 is tightened to hold the steel plate 10, 10 '(e).

  By forming the long hole bolt insertion holes 22A in the upper plate 20 as described above, as shown in FIG. 9C, when the base plate 10 'is mounted, the upper plate 20 is made of the base plate 10'. Since it can arrange | position out of the mounting range, it becomes possible to mount base-plate 10 'easily. Further, since the upper plate 20 and the lower plate 30 are temporarily tightened by the hexagonal bolt 40, the iron plate connecting tool 100 is temporarily fixed to the base steel plate 10 already mounted, and the lower side is mounted while mounting the base steel plate 10 '. It is possible to prevent the plate 30 from shifting or coming off.

(Modification 2)
In the above embodiment, the upper plate 20 and the lower plate 30 are formed in a substantially square shape, but the shapes of the upper plate 20 and the lower plate 30 of the present invention do not exclude the formation of a substantially circular shape. In the embodiment shown at 10, a connection state transition diagram of the substantially circular iron plate connector 100 in which the upper plate 20 is configured to be slidable is shown. First, the steel plate 10 is placed on the installation ground surface. Then, while inserting the lower plate 30 between the lower surface of the floor plate 10 disposed and the ground surface, the end portion of the floor plate 10 is brought into contact with the iron plate positioning projection 35 (a). Next, the long plate bolt insertion holes 22A of the upper plate 20 and the bolt screw holes 32 of the lower plate 30 are aligned as shown in FIG. ). Thereafter, as shown in FIG. 10C, the floor plate 10 'is placed on the upper surface on the left side of the lower plate 30, and the upper plate 20 is rotationally moved along the illustrated arrow (d). After the rotational movement, the other hexagonal bolt 40 is attached, and by tightening each hexagonal bolt 40 with a predetermined torque, the underlayment plates 10 and 10 'are held between the upper plate 20 and the lower plate 30. Further, the hexagonal socket set screw 41 is tightened to hold the steel plate 10, 10 '(e).

(Modification 3)
In the above-described "Modification 1", the bolt insertion hole formed in the upper plate 20 is a long hole, the upper plate 20 is configured to be slidable, and the upper plate is placed on the other plate. It was configured so that 20 did not get in the way. However, as shown in FIG. 11, by forming the fastening position by at least one hexagonal bolt 40 in the vicinity of the end portion of the upper plate 20, as in the case of “Modification 1”, the other floor plate is mounted. The upper plate 20 can be configured to be out of the way when placed.

(Modification 4)
Moreover, in the above-mentioned embodiment, although the upper plate 20 and the lower plate 30 of the iron plate coupling tool 100 were made into substantially square shape, it is not necessarily limited to substantially square shape, and as shown in FIG. 12 (a) A diamond shape is also possible. According to such a configuration, the upper plate 20 and the lower plate 30 as a whole can uniformly and uniformly apply a constraining force to the iron plate, and the upper plate 20 and the lower plate 30 In the plane shape of the above, it is possible to secure a further longer distance (length L in the figure L) from the center position of the hexagonal bolt 40 to the hexagonal socket set screw 41, so It is possible to secure a larger pinching range (length of L in the drawing) and to make the iron plate connector 100 less likely to come off than in the related art.

(Modification 5)
Further, although the iron plate positioning projection 35 is provided only on the lower plate 30 in the above embodiment, it may be provided on the upper plate 20 and the lower plate 30 as shown in the cross-sectional view of FIG. Good. According to such a configuration, the mold (mold) of the upper plate 20 and the lower plate 30 can be made common, which makes it possible to suppress the manufacturing cost.

(Modification 6)
Moreover, in the above-mentioned embodiment, although the set screw hole 21 penetrated in the upper plate 20 was formed, as FIG.13 (b) shows, the non-penetrating set screw hole 21A is formed and it can replace | exchange It is also possible to constitute so that screw 21A may be screwed. According to such a configuration, simultaneously with the tightening of the hexagonal bolt 40, restraint of the sole plate by the set screw 21A is performed. Further, as shown in FIGS. 13 (b) and 13 (c), in place of the iron plate positioning projection 35 in the above-described embodiment, a female screw projection 35A for screwing a hexagonal bolt 40 is formed on the upper surface of the lower plate 30. It is also possible. According to such a configuration, the female screw projection 35A can serve both as the fastening function of the upper plate 20 and the lower plate 30 and the positioning function of the floor plate 10, 10 '.

(Modification 7)
Furthermore, as shown in FIG. 14, it is also possible to form a rubber layer 50 on the upper surface of the lower plate 30. According to such a configuration, it is possible to prevent the mounting plate from sliding on the lower plate 30 when mounting the mounting plate.

  Although the embodiment and various modifications of the present invention are as described above, the iron plate connector 100 of the present invention is not limited to the connection fitting of the floor plate, and a plurality of iron plates are vertically connected. Also in the above, it is possible to use the iron plate connector 100 of the invention.

  Moreover, in the said embodiment and modification, although substantially square shape, substantially circular shape, and rhombus shape were illustrated as a shape of the iron plate coupler 100, it does not necessarily exclude making it rectangular shape or polygonal shape.

  Moreover, in the said embodiment and modification, although the upper plate 20 and the lower plate 30 were illustrated as the same shape, it does not necessarily exclude that the upper plate 20 and the lower plate 30 become a different shape.

  As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to these embodiment. Further, the scope of the present invention is indicated by the claims rather than the description of the embodiments described above, and further includes all modifications within the meaning and scope equivalent to the claims. In addition, specific materials, dimensions, and the like described in the above-described embodiments can be modified as long as the problems of the present invention are solved.

Reference Signs List 10 base plate 10 'base plate 20 upper plate 30 lower plate 40 hexagonal bolt 41 hexagonal socket set screw 100 iron plate connector

Claims (3)

An iron plate connector, in which iron plates adjacent to each other are sandwiched between an upper plate and a lower plate, both of which have a predetermined shape,
The upper plate and the lower plate are both substantially line symmetrical to two substantially orthogonal lines at the center of the predetermined shape,
The upper plate is
A set screw for pressing the iron plates adjacent to each other in the vicinity of both ends of one of the two substantially orthogonal lines,
An iron plate connector including a bolt for fastening the upper plate and the lower plate in the vicinity of both ends of the other of the two substantially orthogonal lines. The upper plate is formed with a set screw hole into which the set screw is screwed, and a bolt insertion hole into which the bolt is inserted;
The iron plate connector according to claim 1, wherein a bolt screw hole into which the bolt is screwed is formed in the lower plate. The upper plate can be moved out of the mounting range of the iron plate in a state in which the upper plate and the lower plate are temporarily tightened by inserting the bolt into the bolt insertion hole of at least one of the bolt insertion holes The iron plate connector according to claim 2, wherein the iron plate connector is formed in