JPH0324704Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a joining pin used for connecting blocks constructed in succession, such as concrete products and ceramic products.

(Prior art) As the conventional technology for this invention,
There is a device described in Publication No. 108106.

The gist of this invention is to provide a conical hole with a large diameter opening in the mating end surface of the block body, and to fit into the hole a conical core that is tapered upward and downward.

(Problem to be solved by the present invention) However, in this conventional core (pin), the peripheral wall of the cylindrical body is located in the center, or faces toward both sides with a small portion of the same diameter remaining in the center. Since it is a tapered rod shape, when fitting the blocks while maintaining the joint width between the mating end faces, it requires skill to adjust the joint spacing one by one and position it accurately. It is difficult to ensure a uniform joint width, and it is unsightly if the spacing between the mating surfaces is not even, and the blocks are not vertically aligned. When masonry is carried out in the same direction, the core itself may be compressed by the weight of a large number of blocks, and there is a risk that the joint widths will change and become irregular.

Furthermore, since the core is solid, it lacks elasticity and is repelled by air remaining in the conical hole, making it difficult to fit.

Further, there is a problem in that the outer surface of the circumferential core and the joint material are difficult to adhere to, and the integrity of the joint end surface is poor.

(Means for solving the problem) The circumferential wall of the cylindrical body is tapered from the center to both ends to form a circular hole with a narrow inner part, which is provided at the joint end face of blocks such as concrete products and ceramic products. In the pin that serves as a joint for tight fitting, there is a hole between the mating surfaces of the blocks in the center of the cylindrical body forming the joint, or alternatively, a cylindrical body with holes drilled from both end faces. By using a pin having a flange around the periphery having approximately the same thickness as the width of the joint to be provided, or a pin having a cutout at an appropriate interval around the flange, the block can be easily formed. Build fast, strong connections.

(Operation and Examples) By firmly fitting the joining pin according to the present invention into the circular hole provided on the mating end surfaces of adjacent blocks, and pressing both sides of the flange edge with the mating end surfaces, a large number of pins can be formed. The blocks are connected together.

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

As shown in FIGS. 1 to 4, the diameter of the circumferential wall of the cylindrical body is tapered from the center toward both sides, and toward the inner part provided at the lower part of the mating end surface 1a of the U-shaped groove block 1. In order to form joints 3, 3 for tightly fitting into the once narrow circular holes 2, 2, and to maintain an appropriate joint spacing between the mating end surfaces 1a, 1a of the opposing U-shaped groove blocks 1, 1, The flange edge 4 having almost the same thickness as the joint filling interval is connected to the joint portion 3,
3, a joining pin 5 is obtained.

Reference numeral 6 in the figure is a groove cover, and by screwing a bolt 8 into an insert nut 7 buried in the upper surface of the U-shaped groove block 1, the end of the groove cover 6 is strongly pressed and the upper surface of the U-shaped groove block 1 is secured. It is to be fixed at

Further, as shown in FIGS. 5 and 6 as another embodiment of the joining pin, the joining portions 3, 3 which are tightly fitted into the circular holes 2, 2 are formed by penetrating the holes from both end surfaces of the cylindrical body. The airflow passage 5a is formed by tapering the diameter from the center of the cylindrical body toward both sides, and the flange 4 has a thickness that is approximately the same as the joint gap between the blocks. A joining pin 5' is formed around the central part of the connecting pin 5'.

Further, as another embodiment of the joining pin, as shown in FIG. 11, holes are bored on both end faces of a cylindrical body whose diameter is tapered toward both sides of the joining pin 5, and a blind hole is formed. 5b, 5b are formed into a joining pin 5''.

In addition, as another embodiment, as shown in FIGS. 12 and 13, a joining pin 5'' is provided in which the periphery of the flange 4 is cut out at appropriate intervals, and the flange 4 is formed into a gear shape. In the above embodiment, the flange 4 is cut out in the shape of a gear, but the shape is not limited to this, and the shape can be changed within the scope of the invention.

Another example of the use of the joining pin 5' according to the present invention is as shown in FIGS. 7 and 8, as shown in FIGS.
The circular holes 2, 2 are drilled at appropriate positions of a with a distance maintained between them, and the circular holes 2, 2 of the opposing joint surfaces 9a, 9a are formed.
Garter blocks 9 are successively constructed by firmly fitting the joint portions 3, 3 of the joint pins 5' into the garter blocks 9 and 2.

Also, as other usage examples, see Figures 9 and 10.
As shown in the figure, the joint end faces 10a of the manhole side mass blocks 10 are laid in multiple stages underground.
The circular hole 2 is vertically drilled in the appropriate position, and the joint part 3 of the joint pin 5'' is firmly fitted into the circular hole 2 of the lower manhole side mass block 10, and the manhole side mass block 10 is attached. It is built in multiple stages.

(Effects of the invention) Since the invention is made in this way, the joining pin can be inserted between the circular holes 2 provided on each joint end face of blocks constructed continuously such as concrete products, ceramic products, etc. 5, 5', 5'', or 5 are tightly fitted together, and the joints 3 are filled with mortar to seal the joints while maintaining a constant distance by the flange 4, making it easy and quick to block. can be constructed.

Therefore, there is no need to make fine adjustments to move the blocks up and down one by one depending on the topography as in the past, and in particular, the connecting pins 5 or 5 are not required for the manhole side blocks 10, etc., in which blocks are stacked vertically in multiple stages. ′
Or if 5" or 5 is used, the rim 4
is the joint end surface 10a, 1 of the upper and lower blocks 10, 10
0a and maintains the joint width at a constant interval between the mating end faces to prevent deformation of the joint pin itself, so the joint width can be maintained uniformly and the upper block can be stacked in multiple stages without waiting for the joint material to harden. The workability is very good.

Furthermore, in the case of U-shaped groove blocks 1..., the blocks are connected to each other by connecting pins 5 or 5' or 5'' or 5.
and the groove cover 6 is fixed under strong pressure by the insert nut 7 and bolt 8 embedded in the upper surface of the U-shaped groove block 1, and is integrated into a cylindrical shape to form a solid structure. Second, even if the ground settles unevenly, there will be no difference in level because the building is suspended in the air and does not sink with the ground.
Moreover, since each block is fixed by a joining pin 5 or 5' or 5'' or 5,
It can be installed in a straight line without shifting back and forth, and since the joint spacing is kept constant by the flange 4, the finish is beautiful.

Since the joining pins 5', 5'', and 5 are provided with holes and provided with the air flow passage 5a or the blind hole 5b, the joint portion 3 is formed with a thin wall. Because of its high elasticity, when it is firmly fitted into the circular hole 2, the joint portion 3 and the peripheral wall of the circular hole 2 are in close contact with each other.

In addition, in the case of the joining pins 5' and 5, since the holes pass through and the air flow passages 5a are provided, when the joining part 3 is forcefully fitted into the circular hole 2, the air remains in the circular hole 2. Air is discharged from the air flow passage 5a, and there is no possibility that the joining pin 5' or 5 will be repelled by the remaining air and cause a poor joining.

Furthermore, the flange 4 of the joining pin 5 is cut out at appropriate intervals around the periphery to form a large surface area, so that the adhesion area with the joint material filled in the joint end surface of each block is increased. , it is possible to form an even stronger mating surface with excellent affinity.

As described above, the present invention has a robust and durable structure, is easy to manufacture, is suitable for mass production, and is inexpensive and useful.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal front view showing a state in which a groove cover is fixed to a U-shaped groove block that is continuously constructed using a joining pin according to the present invention. FIG. 2 is a partially cutaway side view showing a state in which the joining pin according to the present invention is used for joining U-shaped groove blocks. FIG. 3 is a front view of the joining pin. FIG. 4 is a cutaway plan view of main parts showing a state in which the groove cover is fixed. Fig. 5 is a partially vertical front view of a joining pin with a hole passing through it and an air flow passage;
The figure is the same side view. FIG. 7 is a side view of a gutter block using the joining pin according to the present invention. FIG. 8 is a partially cutaway front view showing the state in which the connecting pin according to the present invention is used for connecting gutter blocks.
FIG. 9 is a partially cutaway vertical cross-sectional view showing a manhole side mass block stacked in multiple stages using the joining pin according to the present invention, and FIG. 10 is an enlarged view of the X surrounding portion in FIG. 9. FIG. 11 is a partially vertical front view of a joining pin formed with a hole (blind hole). FIG. 12 is a front view of a joining pin in which the periphery of the flange is cut out at appropriate intervals, and FIG. 13 is a side view of the same. 1...U
Shape groove block, 2... Circular hole, 3... Joint part, 4... Flange edge, 5, 5', 5'', 5... Joining pin, 5a... Air flow path, 5b... Blind hole, 9... Gutter block,
10... Manhole side block, 1a, 9a, 1
0a...Abutment surface.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The diameter of the peripheral wall of the cylindrical body is tapered from the center toward both ends to form a joint 3 that is tightly fitted into a circular hole with a narrow inner part provided on the mating end surface of the block. In this pin, the central part of the cylindrical body forming the joint part 3 or, alternatively, the cylindrical body formed by drilling holes from both end faces, has a thickness that is approximately the same as the width of the joint provided between the joint end faces of the blocks. A pin for joining blocks, characterized in that a flange 4 having a flange 4 is provided around the periphery. 2. The block joining pin according to claim 1, which is characterized in that the periphery of the flange 4 is cut out at appropriate intervals.