JP2019218835A - Closing-cover fixation structure - Google Patents

Abstract

To solve the problem in which vibrations from traveling vehicles or the like may cause a top cover block covering a gutter block to be dislocated or disengaged, which may cause pedestrians to face unexpected danger if no measures are taken, where the problem is coped with by fastening and fixing both the blocks through bolts, fixtures or the like.SOLUTION: There is provided a closing-cover fixation structure of a gutter block and a top cover block through metal fittings. In a gutter metal fitting, a portion substantially higher than at least a cross-sectional center line of a female thread cylindrical body is cut out along the longitudinal direction of the cylindrical body, and the longitudinally cut portion is regarded as a connecting bolt sliding groove. A substantially semicircular male thread sliding body not screwing into but slidably contacting a female thread is accommodated in the female thread cylindrical body in a position-adjustable manner. An upper face of the male thread sliding body is provided with a standing connecting bolt. A top cover metal fitting is a tabular pressure welded body provided with a connecting bolt insertion hole.SELECTED DRAWING: Figure 9

Description

  The present invention is directed to a gutter block and an upper lid block fitting configured to perform removal and fixing work via a metal fitting having a predetermined structure that is compatible with both blocks in order to fix and remove the upper lid block to and from the gutter block. And a cover closing fixing structure.

  2. Description of the Related Art Conventionally, when an upper lid block is closed on a gutter block, the upper lid block is displaced or detached due to running vibration of a vehicle or the like. If left unchecked, there is an unexpected danger to pedestrians.

  For this purpose, both blocks are fastened and fixed via bolts, fixtures and the like (for example, see Patent Documents 1 and 2).

Japanese Utility Model Publication No. 62-089387 JP 2000-291118 A

  A method of tightening and fixing both blocks with bolts as in the prior art has been implemented, but the bolt tightening structure is weak and it is not possible to completely close the upper cover block to the gutter block for a long time and it is aging. This was the cause of the accident on the road.

  On the other hand, if the upper lid block is fixed too strongly, it may be necessary to remove the lid block if necessary. Various problems such as the inability to remove the lid block and the inability to remove the lid block have occurred.If these problems are left unattended, the lid block will come off carelessly, causing an unexpected accident in the traveling vehicle. However, there is a possibility that the walking of the pedestrian may be hindered.

  The present invention has been made in view of such circumstances, and in order to fix or remove an upper lid block to or from a gutter block, a removal and fixing operation can be performed via a metal fitting having a predetermined structure that is compatible with both blocks. The present invention provides a lid-closed fixing structure using metal fittings for the side groove block and the upper lid block.

In order to solve the above-mentioned conventional problems, in the present invention, a gutter fitting for lid connection is buried at the top end of the gutter block, and the upper surface thereof is exposed flush with the block surface, and is provided on the bottom surface of the side edge of the upper lid block. An upper cover metal fitting made of a flat press-fit body is buried and the surface is exposed flush with the block surface, and the exposed surface of the side groove metal fitting and the exposed surface of the upper lid metal fitting with the upper lid block closed with the side groove block closed. The upper and lower gutters are made of a hollow case with an opening on the front side and a long hole for bolt body insertion on the ceiling surface, and a washer inside the hollow case. And a bolt head holding space for accommodating the bolt head, and the upper lid fitting is constituted by a pressure contact plate having a connecting bolt insertion hole in the center, and in a state where the upper lid block is closed with the side groove block, a hollow case in the side groove fitting. A connecting bolt protruding from the bolt head holding space above the long hole for inserting the bolt body projects from the connecting bolt inserting hole above the pressure contact plate of the upper cover metal fitting, and a fastening nut is screwed onto the connection bolt on the upper surface of the pressure contact plate to form a side groove. The upper lid block is closed and fixed to the gutter block by bringing the upper lid bracket into close contact with the metal fitting, thereby providing a closed lid fixing structure using the bracket for the gutter block and the upper lid block. is there.

  Further, the lid fixing structure according to the present invention is characterized in that a gutter anchor is vertically provided on the gutter metal fitting and a lid anchor is provided on the upper lid metal fitting.

  Also, in the lid fixing structure according to the present invention, the bolt head holding space of the side groove metal fitting is characterized in that the connecting bolt head is prevented from rotating.

  Further, in the lid fixing structure according to the present invention, the connection bolts projecting upward from the connection bolt insertion holes and the fastening nuts screwed to the connection bolts are both released from the upper surface water holes provided in the upper cover block. It is characterized by being disposed at a position facing the upper surface water hole so that operation is possible.

  According to the first aspect of the present invention, a gutter fitting for lid connection is buried at the top end of the gutter block, the upper surface thereof is exposed flush with the block surface, and a flat plate-shaped pressure contact is made on the bottom surface of the side edge of the upper cover block. An upper cover bracket consisting of a body is buried and its surface is exposed flush with the block surface, and with the upper cover block closed, the exposed surface of the gutter bracket and the exposed surface of the upper cover bracket are held up and down. Since it is configured to be in a contact-joined state, the gutter metal fittings buried in each block in advance and the metal fittings for the upper lid are brought into contact with each other and joined, whereby the entire blocks are securely joined and the upper lid block is inadvertently formed. There is no risk of coming off.

  In addition, the gutter fittings consist of a hollow case with an opening on the front side and a long hole for bolt body insertion on the ceiling surface.The hollow case has a bolt head holding space for storing washers and bolt heads. The metal fitting is composed of a pressure contact plate having a connecting bolt insertion hole in the center, and in a state in which the upper lid block is closed in the side groove block, the bolt body holding space of the hollow case in the side groove metal fitting is above the long hole for inserting the bolt body. The connecting bolt protruding from the connecting bolt insertion hole is configured to protrude above the pressure contact plate of the upper lid metal fitting, and a tightening nut is screwed onto the connection bolt on the upper surface of the pressure contact plate to attach the upper lid metal fitting to the side groove metal fitting. When the upper lid block is closed and fixed to the gutter block, the fitting and fixing of each bracket are performed via the screwing and tightening of the connection bolt and nut, and the connection of each block is ensured. The effect of the body connected becomes possible.

  Furthermore, since the tightening operation of the connecting bolt is also performed by the screwing operation with the nut, there is an effect that the joining and fixing operation of each block can be easily performed.

  In addition, when it is necessary to remove the upper lid block when inspecting the inside of the side groove block, the inside of the side groove block can be inspected by a simple operation of simply removing the nut from the connecting bolt.

  According to the invention of claim 2, the anchor for the side groove is vertically provided on the metal fitting for the side groove, and the anchor for the lid is erected on the metal fitting for the upper lid, so that each metal fitting is securely embedded and fixed in each block. There is an effect that can be.

  According to the invention of claim 3, the bolt head holding space of the gutter metal fitting has a structure for preventing the connection bolt head from rotating, so that joining of the gutter block metal fitting and the upper lid block metal fitting by the connecting bolt is easy. There is an effect that the structure is securely fixed.

According to the fourth aspect of the present invention, any of the connection bolts protruding from the connection bolt insertion holes above the pressure contact plate and the fastening nuts screwed into the connection bolts can be released from the upper surface water holes provided in the upper lid block. By disposing it at a position opposite to the upper surface water passage hole, the screwing and tightening operation position of the connection bolt and the tightening nut projecting upward from the connection bolt insertion hole to the press contact body is opposed to the upper surface water passage hole. It is possible to insert a jig such as a wrench from the upper surface water hole provided in the upper lid block to release the tightening of the connection bolt, and to release the fixing with the upper lid block closed. There is a possible effect.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole perspective view which shows the structure of the block for side grooves provided with the lid fixing structure of this invention, and the block for upper lids. It is a perspective view showing the composition of the block for gutters provided with the metal fittings for gutters concerning the present invention. It is a top view showing composition of a gutter block provided with a gutter fitting concerning the present invention. It is a perspective view showing composition of an upper lid block provided with an upper lid metal fitting concerning the present invention. It is an enlarged plan view showing the composition of the block for upper covers provided with the metal fittings for upper covers concerning the present invention. It is an enlarged bottom view which shows the structure of the block for upper covers provided with the metal fitting for upper covers concerning this invention. It is a perspective view which shows the structure of the metal fittings for the side groove | channel and the metal fittings for the upper lid which comprise the closed lid fixing structure of this invention. It is AA sectional drawing which shows the structure of the metal fitting for gutters which concerns on this invention. It is a perspective view which shows the up-and-down contact state of the metal fitting for gutters which concerns on this invention, and the metal fitting for upper lids. It is a top view which shows the modification 1 of the block for gutter | gutters provided with the lid fixing structure of this invention, and the block for upper lids. It is a top view which shows the modification 2 of the block for gutters and the block for upper lids provided with the lid fixing structure of this invention. It is a perspective view which shows the modification 2 of the block for gutters provided with the lid fixing structure of this invention. It is a perspective view showing the composition of the triangular block concerning modification 2 of the present invention. It is a top view which shows the arrangement structure of the upper surface water hole of the upper lid block which concerns on the modification 2 of this invention.

  The gist of the present invention is that an upper lid made of a plate-shaped press-contact body is provided on a bottom surface of a side edge of an upper lid block, with a gutter fitting for lid connection being buried at the top end of the gutter block, the upper surface thereof being exposed flush with the block surface. The metal fittings are buried and the surface is exposed flush with the block surface.When the upper lid block is closed with the gutter block, the exposed surface of the gutter metal fitting and the exposed surface of the upper lid metal fitting are joined vertically. In addition, the gutter fitting is made up of a hollow case with a front side open and a long hole for bolt body insertion on the ceiling surface, and a bolt head for storing a washer and a bolt head inside the hollow case. The upper cover fitting is a pressure contact plate having a connection bolt insertion hole in the center, and the upper cover block is closed in the side groove block. A connecting bolt protruding above the long hole for inserting the main body protrudes from the connecting bolt inserting hole above the pressure contact plate of the metal fitting for the upper lid, and a tightening nut is screwed to the connecting bolt on the upper surface of the pressure contact frame plate, and the metal fitting for the side groove is used for the upper lid. This is because the upper cover block is closed and fixed to the side groove block by bringing the metal fitting into a close contact state.

  In addition, a gutter anchor is provided vertically on the gutter metal fitting, and a lid anchor is provided upright on the upper lid metal fitting.

  Further, the bolt head holding space of the side groove fitting has a structure for preventing the connection bolt head from rotating.

  In addition, the connection bolt projecting upward from the connection bolt insertion hole to the upper side of the press-contact plate and the fastening nut screwed to the connection bolt are both provided on the upper cover block so that the release operation can be performed from the upper water passage hole provided in the upper lid block. It is located at a position opposite to the hole.

  An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall perspective view showing the configuration of a gutter block and an upper lid block having a lid fixing structure according to the present invention, and FIGS. 2 and 3 are perspective views and plan views showing the configuration of a gutter block having a gutter fitting. FIGS. 4 and 5 are perspective views showing the configuration of an upper lid block provided with an upper lid fitting, FIGS. 5 and 6 are enlarged plan views and enlarged bottom views showing the configuration of the upper lid block provided with an upper lid fitting, and FIG. FIG. 8 is a perspective view showing a configuration of a gutter metal fitting and an upper lid metal fitting constituting the lid fixing structure, FIG. 8 is an AA cross-sectional view showing a configuration of the gutter metal fitting, and FIG. It is a perspective view which shows a contact joining state.

  Reference numeral 10 in FIG. 7 denotes a gutter metal fitting for lid connection embedded in the top end of the gutter block 1. As shown in FIGS. 1 to 3, the gutter metal fitting 10 is formed into a concrete block mold so that the surface 10 a of the gutter block 1 is exposed flush with the upper surface 1 a of the gutter block 1 when the die is formed. Is buried together when flowing in.

  As shown in FIGS. 1 and 4 to 6, an upper cover metal fitting 20 composed of a flat pressure contact plate 21 is embedded in the side edge bottom surface 2 a of the upper cover block 2. It is in an exposed state flush with the edge bottom surface 2a).

  When the upper lid block 2 is closed on the side groove block 1, as shown in FIG. 9, the exposed surface 10 a of the side groove metal fitting 10 and the exposed surface 20 a of the upper lid metal fitting 20 are vertically joined to each other. are doing.

  As shown in FIG. 7, the upper cover metal fitting 20 is configured by providing a connection bolt insertion hole 22 in a flat press-contact plate 21, and when the upper groove block 1 is closed with the upper cover block 2 closed, The connecting bolt 30 protruding from the side groove fitting 10 protrudes from the connecting bolt insertion hole 22 above the press contact plate 21.

  Then, by screwing and tightening a fastening nut 31 to the projecting connection bolt 30, the upper lid fitting 20 can be joined to the side groove fitting 10, and an integrated tightening state can be obtained.

  As shown in FIG. 7, a substantially L-shaped anchor 13 for a groove and an anchor 23 for a lid are provided on the metal fitting 10 for a gutter and the metal fitting 20 for an upper lid. As shown in FIGS. 1 to 6, each of the anchors 13 and 23 is formed in a substantially L-shape and embedded in a block together with the brackets 10 and 20 to secure the respective brackets 10 and 20 in the block. I have.

  Further, the gutter fitting 10 is constituted by a hollow case 11 having a front surface opened and a long hole 12 for bolt body insertion provided on a ceiling surface (exposed surface 10a) as shown in FIGS. Is a bolt head holding space 16 for accommodating a washer 32 and a bolt head 30a. The upper lid fitting 20 is composed of a pressure contact plate 21 provided with a connecting bolt insertion hole 22 in the center. When the cover is closed, the connecting bolt 30 projecting upward from the bolt head holding space 16 of the hollow case 11 in the gutter fitting 10 above the elongated hole 12 for inserting the bolt body is pressed against the upper cover fitting 20 from the connecting bolt insertion hole 22. The bolt head holding space 16 protrudes above the plate 21, and the bolt head holding space 16 is turned by the connecting bolt head 30 a so that the hexagonal head 30 a of the bolt 30 is fitted and the bolt 30 cannot be rotated. To form a locking structure.

  More precisely, as shown in FIG. 7, the width D1 of the hexagonal head of the bolt 30 and the width D2 of the bolt head holding portion are substantially the same.

  As shown in FIG. 7, the upper cover fitting 20 has a connection bolt insertion hole 22 formed at the center of the press contact plate 21.

  When the upper lid block 2 is closed to the side groove block 1, the connection bolt 30 protruding upward from the bolt head holding space 16 of the side groove metal fitting 10 is inserted through the connection bolt insertion hole 22, and the pressure contact plate of the upper lid metal fitting 20 is formed. 21 so as to project upward.

  A tightening nut 31 is screwed into the connecting bolt 30. The washer 32 is connected between the tightening nut 31 and the connecting bolt head 30a by rotating the tightening nut 31 in the screwing direction on the upper surface 20b of the press contact plate. The bolt head holding portion top plate 10b of the gutter metal fitting 10 and the press-contact plate 21 of the upper lid metal fitting 20 are sandwiched therebetween, and the gutter metal fitting 10 and the upper lid metal fitting 20 are integrally joined as shown in FIG. You.

  The connecting bolt head 30a and the tightening nut 31 are provided with a washer 32. In particular, the side groove metal fitting 10 is opened from the front side and the ceiling surface 10a is provided with a long hole 12 for inserting a bolt body through the hollow case 11. Since the hollow case 11 has a bolt head holding space 16 for accommodating the washer 32 and the bolt head 30a inside the hollow case 11, the washer 32 and the bolt head 30a are provided on the left and right wall surfaces as shown in FIGS. Is formed to accommodate a step.

  In addition, the position of the connection bolt 30 protruding from the connection bolt insertion hole 22 above the pressure contact plate 21 and the position of the tightening nut 31 screwed to the connection bolt 30 are fixed to the upper lid block 2 as shown in FIGS. 1 and 4 to 6. It is disposed at an upper and lower position opposite to the provided upper surface water hole 2b. Therefore, the fastening release operation can be performed from the upper surface water hole 2b provided in the upper lid block 2 using a jig such as a wrench.

With this configuration, even when the upper lid block 2 is closed to the side groove block 1, the fastening nut 31 is tightened and loosened from above the upper lid block 2 using a jig such as a wrench inserted from the upper water passage hole 2b. Can be. When the gutter 10 is embedded in the gutter block 1, the inner surface of the gutter block 1 is bulged inward, and the gutter 10 is embedded in the bulging portion 1 '.

  The following description shows another modified embodiment, in which the upper lid block and the side groove block constitute a corner portion. FIG. 10 is a plan view showing a configuration of an upper lid block and a side groove block according to Modification Example 1, FIGS. 11 and 12 are a plan view and a perspective view showing a configuration of an upper lid block and a side groove block according to Modification Example 2, and FIG. FIG. 14 is a perspective view showing a configuration of a triangular block according to Example 2, and FIG. 14 is a plan view showing an arrangement configuration of upper surface water holes of an upper lid block according to Modification 2.

[Modification 1]
As shown in FIG. 10, the upper lid block 50 and the side groove block 40 are formed by diagonally cutting the front and rear joints so as to match the corners 3 and joining the diagonally cut parts 40c and 50c to form the corners. Form 3

  The side groove block 40 of this shape selects a block of the cutting portion 40c corresponding to the round shape of the corner portion 3 at the site if several types of inclination angles of the oblique cutting portion 40c are formed according to the round shape of the corner portion 3. To form a desired corner.

  In addition, the block in which the ends of the front and rear blocks are cut obliquely is formed on both the upper lid block 50 and the side groove block 40.

[Modification 2]
As shown in FIG. 11, a rectangular upper lid block 70 and a side groove block 60 used for normal straight joining are used, and in the corner portion 3, the front and rear blocks are obliquely arranged so as to trace a required number of corner portions, A separately provided formwork is provided in a triangular space formed outside and inside the block, concrete is poured into the formwork and solidified to form triangular blocks triangular blocks 80 and 80 ′ to form corners 3. To form.

  At this time, as shown in FIG. 12, the bottom 61 of the side groove block 60 has a circular convex portion 90 having a thickness smaller than that of the bottom 61 at the bottom edge of one side groove block 60. A circular concave portion 91 is formed at the bottom edge of the other side groove block 60 'to be protruded and joined, and the circular convex portion 90 and the circular convex portion 90 are formed when the blocks 60 and 60' are arranged along the corner portion 3. The two blocks 60, 60 'are rotatably connected by fitting into the recess 91. In addition, as shown in FIG. 13, circular concave portions 81 and 81 'are also formed on the bottom edge portion 81d of the triangular blocks 80 and 80'.

  By connecting the rectangular front and rear side groove blocks 60 and 60 ′ through the circular convex portion 90 and the circular concave portion 91 by connecting through the concave and convex fitting structure, the corner portion 3 is rounded while finely adjusting the connection angle. The grooves can be arranged so as to conform to the curvature shape, and the front and rear groove blocks 60, 60 ′ can be firmly connected via the circular convex portion 90 and the circular concave portion 91. In addition, concrete flows into the upper part of the thick circular convex part 90 and is formed flush with the bottom part 61. In the figure, reference numeral 90 'denotes a handle protruding from the center of the circular convex portion 90.

  The circular uneven portions 91 and 90 formed as described above have a true circular body as shown in FIG. 12, and therefore, the side groove block 60 joined forward and backward with the circular uneven portions 91 and 90 interposed therebetween. , 60 ′ can be bent to form a block connection of the corner portion 3.

  In addition, in this modified embodiment shown in FIG. 12, in particular, as shown in FIGS. 14A and 14B, the upper lid block 70 that closes the upper surface of each of the continuous blocks such as the side groove blocks 60 and 60 'is used. The upper surface water holes 2b can be arranged in a fixed size, and the positions and appearance of the upper surface water holes 2b of the upper lid blocks 70, 70,... This has the effect that the appearance of the block appearance can be enhanced.

  That is, the circular concave and convex portions 91 and 90 are arranged at the center positions of the joints of the side groove blocks 60 and 60 ′, and as shown in FIGS. 14A and 14B, the upper surface water holes 2b of the upper lid block 70. Are formed in advance on each upper lid block 70, and the inner width thereof is set to 1/2 (1 / 2L) of the length L of the center line C of the upper lid block 70, and the upper surface water hole 2b and the edge of the upper lid block 70 Is 1 / 4L in length.

  When the gutter block 60 and the upper lid block 70 are installed in an area with a large amount of rainfall or a water collection area where rainwater due to rain flows, the upper surface water holes 2b of the upper lid block 70 are added as necessary. For example, three upper surface water holes 2b may be formed in the upper lid block 70, and the inner width thereof may be set to 1/4 (1 / 4L) of the length L of the center line C of the upper lid block 70.

  Therefore, as shown in FIG. 10 and FIG. 14A, when the corner portion 3 is formed, the upper surface water holes 2b of the upper lid block 70 (50) are connected to the front and rear upper lid blocks 70, 70 (50, 50). 4), the upper cover blocks 70, 70 (50, 50) can be formed so that the upper surface water holes 2b are all 1/2 L at equal intervals and are ordered.

  By making the standard length on the left and right on the center line C of the upper lid block 70 provided with the upper surface water holes 2b constant, the upper surface water holes 2b at equal intervals in the corner portion 3 are formed. And a fixed-size combination block in the corner portion 3 can be obtained.

DESCRIPTION OF SYMBOLS 1 Side groove block 2 Upper lid block 10 Side groove metal fitting 11 Hollow case 12 Long hole 13 Side groove anchor 20 Upper lid metal fitting 21 Pressure contact plate 22 Connecting bolt insertion hole 23 Lid anchor 30 Connecting bolt 31 Tightening nut 32 Washer

In order to solve the above-mentioned conventional problems, in the present invention, a gutter fitting for lid connection is buried at the top end of the gutter block, and the upper surface thereof is exposed flush with the block surface, and is provided on the bottom surface of the side edge of the upper lid block. An upper cover metal fitting made of a flat press-fit body is buried and the surface is exposed flush with the block surface, and the exposed surface of the side groove metal fitting and the exposed surface of the upper lid metal fitting with the upper lid block closed with the side groove block closed. And the upper and lower abutment joints, and furthermore, the gutter metal fitting is constituted by a hollow case in which an elongated hole for bolt body insertion is provided on the ceiling surface by opening the inner surface side of the gutter block, and a hollow case. Inside is a bolt head holding space for storing a washer and a bolt head, and the upper lid fitting is composed of a pressure contact body with a connecting bolt insertion hole in the center, and for the side groove when the upper lid block is closed with the side groove block To metal fittings Projecting the kick connecting bolts projecting into the long hole above the bolt body inserted from the bolt head holding space of the hollow casing from the connecting bolt insertion hole to the pressure contact member above the upper lid bracket, screw the locknut in pressure contact body upper surface to the connecting bolt The upper lid block is closed and fixed to the gutter block by attaching the upper lid bracket to the gutter metal fitting to provide a closed lid fixing structure using the bracket for the gutter block and the upper lid block. It is assumed that.

In addition, the gutter bracket consists of a hollow case with an elongated hole for bolt body insertion on the ceiling surface that is open on the inner surface side of the gutter block, and a bolt head holding space for storing a washer and a bolt head inside the hollow case. The upper cover metal fitting is composed of a pressure contact body having a connecting bolt insertion hole in the center, and in a state where the upper cover block is closed with the side groove block, for inserting the bolt body from the bolt head holding space of the hollow case in the side groove metal fitting. The connecting bolt protruding above the long hole is configured to protrude from the connecting bolt insertion hole above the press- contact body of the upper lid fitting, and a fastening nut is screwed to the connecting bolt on the press- contact body upper surface to attach to the side groove fitting. With the upper cover fittings in the tightly joined state, when the upper cover block is closed and fixed to the side groove block, the connection and fixing of each fitting are performed via the screwing and tightening of the connecting bolt and nut. The effect of integral connection of each block is possible.

According to the invention of claim 4, connecting bolt insertion hole can Izure tightening nut tightening screwed to the connecting bolt and the connecting bolt projecting press member upwardly releasing operation tightening the top water flow hole provided on the upper cover block from By disposing it at a position opposite to the upper surface water passage hole, the screwing and tightening operation position of the connection bolt and the tightening nut projecting upward from the connection bolt insertion hole to the press contact body is opposed to the upper surface water passage hole. It is possible to insert a jig such as a wrench from the upper surface water hole provided in the upper lid block to release the tightening of the connection bolt, and to release the fixing with the upper lid block closed. There is a possible effect.

The gist of the present invention is that an upper lid made of a plate-shaped press-contact body is provided on a bottom surface of a side edge of an upper lid block, with a gutter fitting for lid connection being buried at the top end of the gutter block, the upper surface thereof being exposed flush with the block surface. The metal fittings are buried and the surface is exposed flush with the block surface.When the upper lid block is closed with the gutter block, the exposed surface of the gutter metal fitting and the exposed surface of the upper lid metal fitting are joined vertically. In addition, the gutter bracket is composed of a hollow case with a long hole for bolt body insertion provided on the ceiling surface with the inner surface side of the gutter block open and a washer and bolt head inside the hollow case. and housing to bolt head holding space, the upper lid brackets constitute from pressure body provided with the connecting bolt insertion hole in the center, in a state where the closing of the upper cover block into gutter block, bolt head of the hollow case in the side groove for fitting Projecting connecting bolts projecting into the long hole above the bolt body inserted from lifting space from the connecting bolt insertion hole to the pressure contact member above the upper lid bracket, screwed a clamping nut pressed against body upper surface to the connecting bolt to the gutter brackets Then, the upper lid block is closed and fixed to the side groove block by bringing the upper lid fitting into a tightly joined state.

The upper surface water flow, such as unlocking the clamping from above water passage hole formed in the upper lid block is also Izure tightening nut tightening screwed to the connecting bolt and the connecting bolt projecting press member upwardly is possible from the connecting bolt insertion hole It is located at a position opposite to the hole.

As shown in FIGS. 1 and 4 to 6, an upper cover fitting 20 composed of a flat press- contact body 21 is buried in the side edge bottom surface 2 a of the upper cover block 2, and the surface 20 a is formed on the block surface (side surface). It is in an exposed state flush with the edge bottom surface 2a).

As shown in FIG. 7, the upper cover fitting 20 is configured by providing a connecting bolt insertion hole 22 in a flat press- contact body 21, and when the upper cover block 2 is closed to the side groove block 1, The connection bolt 30 protruding from the side groove metal fitting 10 projects from the connection bolt insertion hole 22 above the pressure contact body 21.

Moreover, the gutter metal fitting 10 is constituted by a hollow case 11 in which an elongated hole 12 for inserting a bolt body is provided on the ceiling surface (exposed surface 10a) by opening the inner surface side of the gutter block as shown in FIGS. The inside of the hollow case 11 is a bolt head holding space 16 for accommodating a washer 32 and a bolt head 30a, and the upper cover fitting 20 is constituted by a pressure contact body 21 having a connecting bolt insertion hole 22 at the center. When the upper lid block 2 is closed, the connecting bolt 30 protruding from the bolt head holding space 16 of the hollow case 11 in the gutter fitting 10 to the upper side of the long hole 12 for inserting the bolt body is inserted from the connecting bolt insertion hole 22 to the upper lid. pressure member 21 protrudes above the fitting 20, moreover, connected to the bolt head holding space 16 hexagonal head 30a of the bolt 30 can not rotate the bolt 30 fitted Bol Forming a detent structure of the head 30a.

As shown in FIG. 7, the upper cover fitting 20 has a connection bolt insertion hole 22 formed at the center of the press- contact body 21.

The pressure of the bolt head holding connecting bolt 30 projecting upward from the space 16 is connected bolt insertion hole 22 is inserted top cover clasp 20 with gutter bracket 10 in a state where the closing of the top lid block 2 in the gutter block 1 21 so as to project upward.

A tightening nut 31 is screwed into the connecting bolt 30. The washer 32 is connected between the tightening nut 31 and the connecting bolt head 30a by tightening and rotating the tightening nut 31 in the screwing direction on the upper surface 20b of the press contact body. The bolt head holding portion top plate 10b of the gutter metal fitting 10 and the press- contact body 21 of the upper lid metal fitting 20 are sandwiched therebetween, and the gutter metal fitting 10 and the upper lid metal fitting 20 are integrally joined as shown in FIG. You.

The connecting bolt head 30a and the tightening nut 31 are provided with a washer 32. In particular, the gutter metal fitting 10 has an elongated hole 12 for inserting a bolt body in the ceiling surface 10a when the inner surface of the gutter block is opened. The hollow case 11 has a bolt head holding space 16 for accommodating the washer 32 and the bolt head 30a inside the hollow case 11, so that the washer 32 is provided on the left and right wall surfaces as shown in FIGS. And a step for accommodating the bolt head 30a.

Moreover, the position of the connection bolt 30 protruding from the connection bolt insertion hole 22 above the pressure contact body 21 and the position of the tightening nut 31 screwed to the connection bolt 30 are fixed to the upper lid block 2 as shown in FIGS. 1 and 4 to 6. The upper surface water holes 2b are provided at upper and lower positions opposed to each other. Therefore, the fastening release operation can be performed using the jig such as a wrench from the upper surface water hole 2b provided in the upper lid block 2.

Reference Signs List 1 side groove block 2 upper lid block 10 side groove metal fitting 11 hollow case 12 long hole 13 side groove anchor 20 upper lid metal fitting 21 pressure contact body 22 connection bolt insertion hole 23 lid anchor 30 connection bolt 31 fastening nut 32 washer

Claims (4)

At the top end of the gutter block, a gutter fitting for lid connection is buried, and its upper surface is exposed flush with the block surface.
An upper lid fitting made of a flat press-fit body is buried in the bottom surface of the side edge of the upper lid block, and the surface is exposed flush with the block surface,
With the upper lid block closed in the gutter block, the exposed surface of the gutter bracket and the exposed surface of the upper lid bracket are configured to be in a vertically abutting state,
In addition, the gutter bracket is composed of a hollow case with a front side open and a long hole for bolt body insertion on the ceiling surface, and a bolt head holding space for storing washers and bolt heads inside the hollow case,
The upper lid bracket is composed of a pressure contact plate with a connection bolt insertion hole in the center,
When the upper lid block is closed in the side groove block, the connecting bolt projecting upward from the bolt head holding space of the hollow case in the side groove fitting above the long hole for inserting the bolt body from the connecting bolt insertion hole to above the pressure contact plate of the upper lid fitting. The upper cover block is closed and fixed to the side groove block by screwing a tightening nut onto the connection bolt on the upper surface of the press-contact frame body and bringing the upper cover metal fitting into tight contact with the side groove metal member. Lid fixing structure with metal fittings for the upper and lower lid blocks.   2. The fixing structure according to claim 1, wherein an anchor for the side groove is provided vertically on the metal fitting for the side groove, and an anchor for the lid is provided upright on the metal fitting for the upper lid. .   3. The lid fixing structure according to claim 1 or 2, wherein the bolt head holding space of the side groove fitting has a structure for preventing the connection bolt head from rotating.   Both the connection bolt projecting upward from the connection bolt insertion hole and the tightening nut screwed to the connection bolt are provided with an upper surface water hole that enables a release operation from the upper surface water hole provided in the upper lid block. The lid fixing structure according to any one of claims 1 to 3, wherein the side groove block and the upper lid block are provided at opposite positions.

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