JPH10299012A - Jointing construction by coupling pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen the jointing against a shear load in the contact surface direction by fitting a cylindrical intermediate drum portion provided between two truncated cone-shaped half body portions arranged reversely on the same axis into a short cylindrical seat portion provided at the opening end portion of the pin receiving hole, thereby absorbing the deviation in the shape and size of the pin receiving hole. SOLUTION: Two members 4, 5 are jointed together by a coupling pin 1 comprising two truncated cone-shaped coupling pin 1 jointed reversely on the same axis; one of the half body portion 2 is fitted to a truncated cone-shaped pin receiving hole provided in one member 4 as a coupling target; and the other half body portion 3 is inserted and fitted to a truncated cone-shaped pin receiving hole 7 provided in another member 5 as other target of coupling, and two members 4, 5 are jointed together. When a cylindrical intermediate drum portion 10 provided between the half bodies 2, 3 is fitted to short cylindrical seat portions 11, 12 provided at the end portion of an opening of the pin receiving holes 6, 7, certain deviation in shape or size of the pin receiving holes 6, 7 can be absorbed within the range of the length in axial direction of the intermediate drum portion 10, and no deviation occurs in the relative position of the members 4, 5. Also, a shear load applied to the contact surface direction of the two members 4, 5 is dispersed and supported by the intermediate drum portion 10.

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 formed. 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 and 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]

Means for Solving the Problems Hereinafter, description will be made using reference numerals in the accompanying drawings.
One connecting member 4 to be connected uses a connecting pin 1 in which two frustoconical halves 2, 3 are coaxially joined in opposite directions.
One half 2 is fitted into a truncated conical pin receiving hole 6 provided on the other side, and the other half 3 is fitted into a frustoconical pin receiving hole 7 provided on the other member 5 to be connected. In the joining structure for joining the two members 4 and 5, the two halves 2,
3, a cylindrical intermediate body 10 is provided between
7 is provided with short cylindrical seats 11 and 12 at the opening end. When the half parts 2 and 3 are fitted into the pin receiving holes 6 and 7,
The intermediate body 10 of the connecting pin 1 is fitted to the short cylindrical seats 11, 12 of the pin receiving holes 6, 7. Even if the shape and size 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. . Also, when a shear load is applied in the contact surface direction of the two members 4 and 5,
The load is dispersed and supported on the intermediate body 10 which abuts the short cylindrical seats 11 and 12 with a certain area.

The gist of the present invention is that, in addition to the above structure, slits 8 and 9 are provided in one or both half portions 2 and 3 along the axial direction, and the tip portions of the half portions 2 and 3 are provided. The diameter is set to be larger than the inner bottom diameter of the pin receiving holes 6 and 7, and when the half portions 2 and 3 are fitted into the pin receiving holes 6 and 7, the half portions 2 are formed on the inner side surfaces of the pin receiving holes 6 and 7. , 3 are pressed to close the slits 8, 9. Half part 2,
When the fittings 3 are fitted into the pin receiving holes 6 and 7, the inner surfaces of the pin receiving holes 6 and 7 press the outer surfaces of the half portions 2 and 3 from the time when the fitting progresses to a certain stage. 8,
9 will be completely or partially closed. for that reason,
A drag due to the inherent elasticity of the connecting pin 1 acts between the inner surfaces of the pin receiving holes 6 and 7 and the outer surfaces of the halves 2 and 3, and the connecting pin 1 is applied to the members 4 and 5 by the frictional force caused thereby. It is kept stable.

[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 according to the first aspect of the present invention, the cylindrical intermediate body portion 10 is provided between the two half portions 2 and 3 of the connecting pin 1 and the pins of the members 4 and 5 are provided. Receiving holes 6, 7
Since the short cylindrical seats 11 and 12 are provided at the opening ends of the pin, even if there is an error in the shape and size of the pin receiving holes 6 and 7, the pin receiving holes 6 and 7 may be within the axial length of the intermediate body 10. Since the error is compensated for by absorption, it does not appear as an error in the relative position of the two members 4 and 5. Also, even if a shearing load is applied in the direction of the contact surfaces of the two members 4 and 5, the load is applied to the intermediate body 1 of the connecting pin 1 which is in surface contact with the short cylindrical seats 11 and 12.
Since the bearings are dispersedly supported at 0, a joint structure that is strong against shear loads can be obtained.

In the joint structure according to the second aspect of the present invention, one or both of the half portions 2 and 3 have slits 8 and 9 extending in the axial direction.
And the diameters of the tip portions of the halves 2 and 3 are set to be larger than the inner bottom diameters of the pin receiving holes 6 and 7.
Sufficient frictional force acts between the inner surface of the member and the outer surfaces of the half portions 2 and 3, and the connecting pin 1 is stably held by the members 4 and 5. Therefore, in addition to the above effects, the connecting pin 1
This eliminates the necessity of dropping off and temporary pressing of the connecting pin 1 by a finger, and 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 (2)

[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,
A joining structure using connecting pins, wherein 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). 2. A frusto-conical 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 and 12 into which the intermediate body 10 is fitted are provided at the open ends of the pin receiving holes 6 and 7, and one or both of the halves 2 and 3 are provided with slits 8 along the axial direction. 9 are provided, the tip diameters of the half portions 2 and 3 are set to be larger than the inner bottom diameters of the pin receiving holes 6 and 7, and when the half portions 2 and 3 are fitted into the pin receiving holes 6 and 7, A joining structure using a connecting pin, wherein the slits 8 and 9 are closed by pressing the outer surfaces of the half bodies 2 and 3 with the inner surfaces of the receiving holes 6 and 7.