JP3163507U - Connecter and concrete block connection structure - Google Patents

Abstract

A coupler capable of reliably connecting concrete blocks to each other with simple work. A connector includes (1) a rectangular plate-shaped bolt support portion 11a in which a bolt insertion hole 11a1 is formed, and a rectangular plate-shaped fixed portion 11b integrally formed at both ends of the bolt support portion 11a. , A U-shaped main body 11, (2) a nut 13 having a screw hole, and (3) can be inserted into the bolt insertion hole 11 a 1 of the bolt support portion 11 a and screwed into the screw hole of the nut 13. And a bolt 14 having a possible threaded portion, the main body is fixed to one concrete block CB1 to be connected, and the nut is fixed to the other concrete block CB2. [Selection] Figure 1

Description

  In the present invention, a connector for connecting one concrete block to be connected to the other concrete block, and one concrete block to be connected to the other concrete block are connected to each other using the connector. It relates to a concrete block connection structure.

  Various concrete structures such as side grooves and underdrains are usually constructed by connecting concrete blocks prepared in advance (hereinafter simply referred to as blocks) on site. For this connection, a connector is generally used. The connector is roughly classified into a type using a (PA1) screw coupler and a type using a (PA2) wedge insertion coupler.

  As disclosed in Patent Document 1, the coupler (PA1) is rotatably attached to a bar material partially embedded in one block to be connected and an exposed part of the bar material. A male screw coupler; a bar member partially embedded in the other block; and a female screw coupler rotatably attached to an exposed part of the bar member. When the blocks are connected using this connector (PA1), the connecting surfaces of the blocks are aligned and brought into contact with each other, and then the male screw coupler and the female screw coupler are screwed together.

  On the other hand, the connector (PA2) includes, as disclosed in Patent Document 2, a bar material partially embedded in one block to be connected, and a coupler with a wedge hole attached to the bar material And a bar member partially embedded in the other block, and a coupler with a wedge hole attached to the bar member. When connecting the blocks using this connector (PA2), the operation is performed to insert the cores into the wedge holes of both couplers after the connecting surfaces of the blocks are aligned and brought into contact with each other. .

  Although the connection between the blocks using the coupler (PA1) can ensure the coupling force according to the screwing of both couplers, it is actually necessary to fix one coupler and rotate the other coupler. Therefore, it takes a relatively long time for the connection work.

  On the other hand, the blocks can be connected to each other using the coupler (PA2) by simply inserting the cores into the wedge holes of both couplers. Since a bolt or the like is separately required to prevent the screw from coming out of the wedge hole, a relatively long time is required for the connecting operation.

JP 63-118433 A Japanese Patent Application Laid-Open No. 07-076997

  An object of the present invention is to provide a coupler that can reliably connect concrete blocks with a simple operation, and a concrete block connection structure in which concrete blocks are connected to each other using the coupler.

  In order to achieve the above object, the present invention is a connector for connecting one concrete block to be connected with the other concrete block, and (1) a bolt insertion hole is formed in the connector. A rectangular plate-shaped bolt support portion, a rectangular plate-shaped fixed body integrally formed on both ends of the bolt support portion, and a U-shaped main body, and (2) a nut having a screw hole (3) at least a bolt that can be inserted into the bolt insertion hole of the bolt support and that can be screwed into the screw hole of the nut, and the main body has one concrete block on its connecting surface side and In the concave portion formed to have an opening on the side surface side, the bolt support portion is substantially parallel to the connection surface of one concrete block, and at least a part of each fixed portion is one core. The nut is fixed to one concrete block so as to be embedded in the cleat block, and the nut is arranged so that the surface on which the screw hole opening is located is substantially parallel to the connecting surface of the other concrete block. The connector is fixed to the other concrete block so that the removed portion is embedded in the other concrete block. After aligning and contacting the connecting surfaces of the concrete blocks so that the openings of the screw holes of the nuts fixed to the block are substantially aligned, the screw part of the bolt is inserted into the bolt insertion hole of the bolt support part of the main body. Both concrete blocks are connected by inserting and screwing the screw part into the screw hole of the nut.

  Moreover, this invention is a concrete block connection structure which connected one concrete block used as connection object, and the other concrete block using a coupler, Comprising: (1) Bolt insertion hole is formed in this coupler. A rectangular plate-shaped bolt support portion, a rectangular plate-shaped fixed body integrally formed on both ends of the bolt support portion, and a U-shaped main body, and (2) a nut having a screw hole (3) at least a bolt that can be inserted into the bolt insertion hole of the bolt support and that can be screwed into the screw hole of the nut, and the main body has one concrete block on its connecting surface side and In the recess formed to have an opening on the side surface side, the bolt support portion is substantially parallel to the connection surface of one concrete block, and at least one of the fixed portions. Is fixed to one concrete block so that one concrete block is embedded, and the nut is arranged so that the surface where the opening of the screw hole is located is substantially parallel to the connection surface of the other concrete block, and The concrete block connecting structure is fixed to the other concrete block so that a portion excluding the surface is embedded in the other concrete block. After aligning and contacting the connecting surfaces of the concrete blocks so that the hole and the opening of the screw hole of the nut fixed to the other concrete block substantially match, the screw part of the bolt is connected to the bolt support part of the main body. By inserting the screw into the screw hole of the nut and inserting the screw part into the screw hole of the nut. Lock coupling have been made.

  ADVANTAGE OF THE INVENTION According to this invention, the concrete block connection structure which connected concrete blocks mutually using this connector and the coupler which can connect concrete blocks reliably by simple operation | work can be provided.

  The above and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

1A and 1B relate to a first embodiment of the present invention. FIG. 1A is a cross-sectional view showing a state in which blocks are connected to each other, and FIG. It is sectional drawing which follows the S1-S1 line | wire of (A). 2 (A) and 2 (B) relate to a second embodiment of the present invention. FIG. 2 (A) is a cross-sectional view showing a state where blocks are connected to each other, and FIG. 2 (B) is FIG. It is sectional drawing which follows the S2-S2 line of (A).

[First Embodiment]
1A and 1B show a first embodiment of the present invention (connector and concrete block connection structure). In the figure, 10 is a coupler, CB1 is one concrete block to be connected (hereinafter referred to as one block CB1), CB1a is the connection surface of one block CB1, and CB2 is the other concrete block to be connected (hereinafter referred to as “block”). CB2a is the connecting surface of the other block CB2.

  A connector 10 shown in FIGS. 1A and 1B includes a metal body 11, two metal bars 12, a metal nut 13, and a metal bolt 14. It is equipped with.

  The main body 11 has a rectangular plate-shaped bolt support portion 11a and a rectangular plate-shaped fixed portion 11b integrally formed at both ends of the bolt support portion 11a. Yes. In addition, a bolt insertion hole 11a1 is formed in the center of the bolt support portion 11a so as to be able to insert a threaded portion (no symbol) of the bolt 14 with a margin. One end of each bar 12 is fixed to the outer surface of each fixed part 11b by welding or the like, and the other part protrudes downward from each fixed part 11b. The nut 13 has a circular or polygonal outer shape, and has a screw hole (no symbol) upward from the center of the lower surface. The bolt 14 is a general one having a hexagonal head, and the screw portion thereof can be screwed into the screw hole of the nut 13.

  As can be seen from FIGS. 1 (A) and 1 (B), the main body 11 has a rectangular parallelepiped-shaped recess CB1b formed in the block CB1 so as to have openings on the connecting surface side and the side surface side. (Ii) The portion excluding the inner surface of each fixed portion 11b is embedded in one block CB1 so that the upper surface of the bolt support portion 11a is substantially parallel to the connecting surface CB1a of the one block CB1. On the other hand, it is fixed to the block CB1. Further, each bar 12 fixed to each fixed portion 11b of the main body 11 is entirely embedded in one block CB1.

  Further, the nut 13 is (i) so that the lower surface where the opening of the screw hole is located is substantially parallel to the connecting surface CB2a of the other block CB2, and (ii) the portion except the lower surface is embedded in the other block CB2. The other block CB2 is fixed.

  When one block CB1 and the other block CB2 are connected using the connector 10, the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 fixed to the one block CB1 and the screw of the nut 13 fixed to the other block CB2. The connecting surfaces CB1a and CB2a of the blocks are aligned and brought into contact with each other so that the lower surface opening of the hole substantially matches. Subsequently, the bolt 14 is inserted into the recess CBa1 of the block CB1 through the side opening, and the screw portion of the bolt 14 is inserted into the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 from below, and the screw portion is inserted. Screw into the screw hole of the nut 13.

  By this screwing, the head of the bolt 14 comes into pressure contact with the lower surface of the bolt support portion 11a of the main body 11, and the other block CB2 is drawn relatively to the one block CB1 so that the connecting surfaces CB1a and CB2a are in pressure contact with each other. Blocks CB1 and CB2 are connected.

  According to the first embodiment, the following effects (E1) and (E2) can be obtained.

  (E1) By simply inserting the screw portion of the bolt 14 into the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 and screwing the screw portion into the screw hole of the nut 13, the one block CB1 and the other block CB2 Can be reliably connected.

  (E2) Since the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 has a size that allows the screw portion of the bolt 14 to be inserted with a margin, the connecting surfaces CB1a and CB2a between the blocks are aligned and pressed. Even when there is a slight shift between the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 and the lower surface opening of the screw hole of the nut 13, the screw portion of the bolt 14 is connected to the bolt support portion 11a of the main body 11. It is possible to accurately perform the work of inserting the screw portion into the screw hole of the nut 13 by inserting the screw portion into the bolt insertion hole 11a1.

[Second Embodiment]
2A and 2B show a second embodiment (connector and concrete block connection structure) of the present invention. The difference between the second embodiment and the first embodiment is that
The main body 11 of the connector 10 is fixed to the one block CB1 so that the upper surface of the bolt support portion 11a is located on the inner side by a distance D from the connection surface CB1a of the one block CB1. Since other configurations are the same as those of the first embodiment, the same reference numerals are used and description thereof is omitted.

  When the one block CB1 and the other block CB2 are connected using the coupler 10, the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 fixed to the one block CB1 and the other block are connected as in the first embodiment. The connecting surfaces CB1a and CB2a of the blocks are aligned and brought into contact with each other so that the lower surface opening of the screw hole of the nut 13 fixed to CB2 substantially matches. Subsequently, the bolt 14 is inserted into the recess CBa1 of the block CB1 through the side opening, and the screw portion of the bolt 14 is inserted into the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 from below, and the screw portion is inserted. Screw into the screw hole of the nut 13.

  With this screwing, the head of the bolt 14 is pressed against the lower surface of the bolt support portion 11a of the main body 11, and the bolt support portion 11a is bent into a substantially mountain shape using a gap corresponding to the distance D (FIG. 2 ( A) and the arrow in FIG. 2B), the other block CB2 is drawn relatively to the one block CB1, the connecting surfaces CB1a and CB2a are pressed together, and the blocks CB1 and CB2 are connected.

  According to the second embodiment, the same effects (E1) and (E2) as in the first embodiment can be obtained, and the following effect (E3) can be obtained.

  (E3) When the screw portion of the bolt 14 is inserted into the bolt insertion hole 11a1 of the bolt support portion 11a of the main body 11 and the screw portion is screwed into the screw hole of the nut 13, the bolt support portion 11a is a gap corresponding to the distance D. Can be bent in a mountain shape, and the pressure force between the connecting surface CB1a of the one block CB1 and the connecting surface CB2a of the other block CB2 can be increased by the elastic force of the bolt support portion 11a accompanying the bending. it can. Thereby, both blocks CB1 and CB2 can be connected more firmly.

[Other Embodiments]
(1) In the said 1st Embodiment and 2nd Embodiment, although the part except the inner surface of each to-be-fixed part 11b of the main body 11 of the connector 10 was shown embedded in one block CB1, each to-be-fixed part 11b was shown. May be embedded in one block CB1 to enhance the fixing force.

  (2) In the first embodiment and the second embodiment, the entire bar 12 fixed to each fixed portion 11b of the main body 11 of the coupler 10 is embedded in one block CB1. Each bar 12 may be coupled to the internal rebar of one block CB1 to enhance the fixing force.

  (3) In the first embodiment and the second embodiment, the connector 10 is shown in which each bar 12 is fixed to each fixed portion 11b of the main body 11 as the coupler 10, but only each fixed portion 11b is sufficient. If a fixing force can be secured, the bars 12 may be excluded from the coupler 10. In this case, if one or more protruding pieces are integrally formed on the outer surface of each fixed part 11b, and if each through-hole is formed in each fixed part 11b, it is fixed even without each bar 12 It is possible to strengthen the power.

  (4) In the first embodiment and the second embodiment, the coupler 10 having the U-shaped main body 11 is shown, but the rectangular plate portion connecting the lower end of each fixed portion 11b to the main body 11 The main body may be formed in a rectangular frame shape. In this case, if the portion excluding the inner surface of the rectangular plate portion or the whole is embedded in one block CB1, the fixing force can be enhanced.

  CB1, CB2 ... concrete block, CB1a, CB2a ... connection surface, CB1b ... concave, 10 ... connector, 11 ... main body, 11a ... bolt support part, 11a1 ... bolt insertion hole, 11b ... fixed part, 12 ... bar, 13 ... nuts, 14 ... bolts.

Claims (2)

A coupler for connecting one concrete block to be connected with the other concrete block,
The coupler has (1) a rectangular plate-shaped bolt support portion in which a bolt insertion hole is formed and a rectangular plate-shaped fixed portion integrally formed at both ends of the bolt support portion. A shaped body, (2) a nut having a screw hole, and (3) a bolt having a screw part that can be inserted into a bolt insertion hole of the bolt support part and can be screwed into the screw hole of the nut. ,
The main body has a recessed portion formed in one concrete block so as to have an opening on the connecting surface side and the side surface side so that the bolt support portion is substantially parallel to the connecting surface of the one concrete block and The nut is fixed to one concrete block so that at least a part of the fixed portion is embedded in one concrete block, and the nut is arranged so that the surface on which the screw hole opening is located is substantially parallel to the connection surface of the other concrete block. And is fixed to the other concrete block so that the portion excluding the surface is embedded in the other concrete block,
The coupler is a connecting surface between the concrete blocks so that the bolt insertion hole of the bolt support portion of the main body fixed to one concrete block and the opening of the screw hole of the nut fixed to the other concrete block substantially coincide with each other. Then, the two concrete blocks are connected by inserting the screw portion of the bolt into the bolt insertion hole of the bolt support portion of the main body and screwing the screw portion into the screw hole of the nut. A concrete block connection structure in which one concrete block to be connected and the other concrete block are connected using a connector,
The coupler has (1) a rectangular plate-shaped bolt support portion in which a bolt insertion hole is formed and a rectangular plate-shaped fixed portion integrally formed at both ends of the bolt support portion. And (2) a nut having a threaded hole, and (3) a bolt having a threaded part that can be inserted into the bolt insertion hole of the bolt support part and can be screwed into the threaded hole of the nut. ,
The main body has a concave portion formed in one concrete block so as to have an opening on its connection surface side and side surface side so that the bolt support portion is substantially parallel to the connection surface of one concrete block and The nut is fixed to one concrete block so that at least a part of the fixed portion is embedded in one concrete block, and the nut is arranged so that the surface on which the screw hole opening is located is substantially parallel to the connection surface of the other concrete block. And is fixed to the other concrete block so that the portion excluding the surface is embedded in the other concrete block,
The concrete block connecting structure is such that the bolt insertion hole of the bolt support portion of the main body fixed to one concrete block and the opening of the screw hole of the nut fixed to the other concrete block substantially coincide with each other. After the connecting surfaces are aligned and brought into contact, both concrete blocks are connected by inserting the screw part of the bolt into the bolt insertion hole of the bolt support part of the main body and screwing the screw part into the screw hole of the nut. Has been.

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