JP3029407B2 - Connection structure with connecting pins - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure using connecting pins used for joining a retaining wall block, a culvert block, and the like which are arranged adjacent to each other.

[0002]

2. Description of the Related Art In a conventional joint structure using a connecting pin disclosed in Japanese Patent Publication No. 7-122271, two half-shaped portions 22 and 2 having a truncated conical shape as shown in FIGS.
3 uses a connecting pin 21 coaxially joined in the opposite direction, fits one half 22 into a truncated conical pin receiving hole 26 provided in one member 24 to be joined, and The other two members 24 and 25 are joined by fitting the other half 23 into the pin receiving hole 27 having the shape of a truncated cone provided on the other member 25.

However, in this joint structure, the half portions 22, 23 of the connecting pin 21 and the member 24,
It is assumed that the 25 pin receiving holes 26 and 27 are formed in exactly the same shape and size, otherwise,
The relative positions of the two members 24 and 25 are out of order. For example, as shown in FIG. 13, when the pin receiving hole 26 of the member 24 is formed to be larger than the regular size, the half portion 22 of the connecting pin 21 enters into the pin receiving hole 26 extra,
The joining ridge line 21a of the half portions 22 and 23 sinks below the contact surfaces of the members 24 and 25. In such a case, if the pin receiving hole 27 of the other member 25 is formed to have a regular size, a gap is created between the outer surface of the half portion 23 and the inner surface of the pin receiving hole 27. . Here, when the left side of the outer surface of the half portion 23 is biased toward the left side of the inner surface of the pin receiving hole 27, the right side of the outer surface of the half portion 23 and the inner surface of the pin receiving hole 27 are A gap G is formed between the right and left sides of the members 24 and 25. As a result, an error G is generated in the relative position between the members 24 and 25. Such an error is caused by the member 24,
When accumulated for every 25 joints, the members 24, 2 at some stage
5 would not be possible.

[0004] Further, in the conventional joint structure using the connecting pin, the pin receiving holes 26 and 27 of the members 24 and 25 are connected to the connecting pin 2.
Even if the half portions 22 and 23 are formed in a regular shape and size, the joining ridge line 21a of the half portions 22 and 23 is
When the shear force acts in the direction of the contact surfaces of the members 24 and 25 because they come within the contact surfaces of the members 4 and 25, the shear load is applied only to the joining ridge line 21a, so that the members are weak against shear. .

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus for adjusting the relative position of two members even if the half of the connecting pin and the pin receiving hole of the member are slightly displaced from their normal dimensions. An object of the present invention is to provide a joining structure by a connecting pin which does not occur and is resistant to a shear load in a contact surface direction between two members. Another object of the present invention is to provide a structure in which an error does not occur in the relative position of the members, which is strong against a shear load in the contact surface direction, and that the connecting pin is stably held in the pin receiving hole of the member. It is to provide a joint structure.

[0006]

The gist of the present invention is that two frustoconical halves 2, 3 are coaxially connected in opposite directions. Using the connecting pin 1, one half 2 is fitted into a truncated conical pin receiving hole 6 provided in one member 4 to be connected,
In a joining structure in which the other half body 3 is fitted into a truncated cone-shaped pin receiving hole 7 provided in the other member 5 to be connected and the two members 4 and 5 are joined, the two half bodies 2 and 3 are joined together. A cylindrical intermediate body 10 is provided therebetween, and short cylindrical seats 11 and 12 are provided at open end portions of the pin receiving holes 6 and 7 , and one or both of them are provided.
The slits 8 and 9 are provided in the half portions 2 and 3 along the axial direction,
The tip diameters of the halves 2 and 3 are directly adjusted to the inner bottoms of the pin receiving holes 6 and 7.
The diameter is set larger than the diameter, and the half portions 2 and 3 are
When fitting into
Press the outer surfaces of a few to close the slits 8, 9
That is what we did.

In the joining structure thus constructed, when the half portions 2 and 3 are fitted into the pin receiving holes 6 and 7, the connecting pin 1
The intermediate body 10 has a short cylindrical seat 11 having pin receiving holes 6 and 7.
12 is fitted. Even if the shapes and sizes of the pin receiving holes 6 and 7 are slightly deviated from the regular ones, the pin receiving holes 6 and 7 are absorbed within the range of the axial length of the intermediate body portion 10 and the relative positions of the members 4 and 5 are not deviated. . As described above, the halves 2, 3
When fitting into the pin receiving holes 6 and 7,
The inner surfaces of the pin receiving holes 6 and 7 are half
To press the outer surfaces of the parts 2 and 3, the slits 8 and 9
Will be completely or partially closed. Therefore,
Between the inner surfaces of the receiving holes 6 and 7 and the outer surfaces of the half portions 2 and 3
Drag due to the inherent elasticity of the connecting pin 1 acts,
The connecting pin 1 is stably held on the members 4 and 5 by the frictional force
Is done. When a shear load is applied in the direction of the abutting surfaces of the two members 4 and 5, the load is applied to the short cylindrical seats 11 and 12
Are supported in a distributed manner on the intermediate body portion 10 which comes into contact with a certain area.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting pin 1 is made of a plastic material having excellent physical and chemical properties such as mechanical strength and weather resistance. In the embodiment shown in FIGS. The pin 1 has no slit. In the embodiment shown in FIGS. 5 to 8, one half 2
, Two slits 8 are provided in a cross shape. In the embodiment shown in FIGS. 9 and 10, slits 8 and 9 are provided in both halves 2 and 3, and the tip diameter of the halves 2 and 3 is the inner bottom diameter of the pin receiving holes 6 and 7. It is set larger than.

The two members 4 and 5 to be joined are, for example, retaining wall blocks, and the connecting pin 1 is also used as positioning means between vertically stacked retaining wall blocks or between left and right adjacent retaining wall blocks. Function.

[0010]

As described above, in the joint structure of the present invention,
A cylindrical intermediate body 10 is provided between the two halves 2 and 3 of the connecting pin 1, and short cylindrical seats 11 and 12 are provided at the open ends of the pin receiving holes 6 and 7 of the members 4 and 5. Even if there is an error in the shape and size of the pin receiving holes 6, 7, the intermediate body 10
The error is absorbed and compensated for within the range of the length in the axial direction, and therefore does not appear as an error in the relative position of the two members 4 and 5. Further, even if a shearing load is applied in the direction of the abutting surfaces of the two members 4 and 5, the load is applied to the short cylindrical seat 1
Since the support pins 1 and 12 are distributedly supported on the intermediate body 10 of the connecting pin 1 which is in surface contact with the connecting pins 1 and 12, a joint structure that is strong against shear loads can be obtained.

In particular, in the present invention, slits 8 and 9 are provided in one or both half portions 2 and 3 along the axial direction, and the tip diameter of the half portions 2 and 3 is set in the pin receiving holes 6 and 7. Since the diameter is set larger than the bottom diameter, a sufficient frictional force acts between the inner surfaces of the pin receiving holes 6 and 7 and the outer surfaces of the half portions 2 and 3, and the connecting pin 1 is stably held on the members 4 and 5. Is done. Therefore, in addition to the above-mentioned effects, there is no need to drop the connecting pin 1 due to vibration and impact or to temporarily press the connecting pin 1 with a finger, so that the joining work of the members 4 and 5 can be performed efficiently and accurately.

[Brief description of the drawings]

FIG. 1 is a front view of a connecting pin used in a joint structure according to an embodiment of the present invention.

FIG. 2 is a right side view of the connecting pin of FIG. 1;

FIG. 3 is a perspective view of a connecting pin of FIG. 1;

FIG. 4 is a longitudinal sectional view showing a state where two members are joined by the connecting pin of FIG. 1;

FIG. 5 is a front view of a connecting pin used in a joint structure according to another embodiment of the present invention.

FIG. 6 is a right side view of the connecting pin of FIG. 5;

FIG. 7 is a perspective view of the connecting pin of FIG. 5;

8 is a longitudinal sectional view showing a state where two members are joined by the connecting pin of FIG. 5;

FIG. 9 is a perspective view of a connecting pin used in a joint structure according to another embodiment of the present invention.

FIG. 10 is a longitudinal sectional view showing a state where two members are joined by the connecting pin of FIG. 9;

FIG. 11 is a perspective view of a connecting pin used in a conventional joining structure.

12 is a longitudinal sectional view showing a state where two members are joined by the connecting pin of FIG. 11;

13 is a longitudinal sectional view showing a case where there is an error in the shape and size of the pin receiving hole in the joint structure using the connecting pin of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting pin 2 Half of connecting pin 3 Half of connecting pin 4 Member to be joined 5 Member to be joined 6 Pin receiving hole of member 7 Pin receiving hole of member 8 Slit of half part 9 Half of half part Slit 10 Intermediate body of connecting pin 11 Short cylindrical seat of pin receiving hole 12 Short cylindrical seat of pin receiving hole

Claims (1)

(57) [Claims] 1. A frustum-shaped pin receiver provided on one member 4 to be connected, using a connecting pin 1 in which two frustoconical half-parts 2, 3 are coaxially arranged in opposite directions. One half 2 is fitted into the hole 6, and the other half 3 is fitted into a truncated cone pin receiving hole 7 provided in the other member 5 to be connected, and the two members 4 and 5 are joined. In the joining structure, a cylindrical intermediate body 10 is provided between the two halves 2 and 3,
Short cylindrical seats 11, 12 into which the intermediate body 10 is fitted are provided at the open ends of the pin receiving holes 6, 7, and one or both of them are provided.
Slits 8 and 9 along the axial direction are provided in
The diameters of the tip portions of the halves 2 and 3 are set to the inner bottoms of the pin receiving holes 6 and 7.
Set larger than the diameter of the part, and insert the pin holes in the halves 2 and 3.
When fitting into the pins 6,7,
Press the outer surfaces of the body parts 2 and 3 to close the slits 8 and 9
Junction structure by connecting pins, characterized in that the the like.