JP3075232U - Connecting pin - Google Patents

Abstract

(57) [Summary] [Problem] Normally, the connection pin once inserted and penetrated into the pin hole does not fall off due to external force or the like by the action of the retaining member as in the case of the conventional connection pin. When a pin is to be removed, a function of a retaining pin is invalidated to provide a connecting pin which can be removed without destroying the pin, that is, reusably. SOLUTION: A connecting pin such as a pipe material having a retaining member 3 which is axially fixed to a groove 2 or a slit formed on a tip side of a pin 4 by a spring force so as to maintain an inclined posture by a spring force.
10, a small projection 3c is formed on the side surface of the retaining member 3 so as to be engaged with the edge of the groove 2 or the slit of the pin 4, and the projection 3c is connected to the groove 2 of the pin 4 or the edge 1b of the slit. The retaining member 3 is held in a position parallel to the pin 4 within the thickness of the pin 4.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a connecting pin for fixing and holding a connection state at a position when a small diameter member is inserted into a large diameter member and a pipe member and a pipe member are connected to each other.

[0002]

[Prior art]

 When a small-diameter pipe or rod is inserted into a large-diameter pipe and connected, a large number of pin holes are arranged in both members at an appropriate pitch, and both members are joined at a desired connection length. The use of this connection pipe material has been used in various fields such as temporary scaffolding and temporary shelves, by inserting a connection pin into the pin hole of the connector and keeping the connection state.

However, a conventional connecting pin having a return member or a claw for preventing the pin from coming off has an inclined posture at the tip end of a pin body 10 by means of a mustache spring or the like as shown in FIG. 3 as an example. Since the retaining member 11, which is rotatable so as to hold it, is stopped by the pin 12, the retaining member 11 is temporarily inserted into the hole for the connecting pin of the pipe material P1, P2, and the retaining member 11 is inserted into the pipe material. It is virtually impossible to remove this pin 10 once it comes out of the hole on the opposite side of P1 (pin hole on the opposite side from the insertion side), as shown as the lower pin 10 in FIG. .

However, if the connecting pin 10 cannot be removed, for example, if it is desired to change the connecting position of the pipe material or if it is desired to release the connection, the connecting pin 10 inserted into the pin hole is required. The distal end of the pin 10 including the retaining member 11 was cut with a metal cutter or the like, that is, the pin 10 could not be used again as a connecting pin.

[0005]

[Problems to be solved by the invention]

 In view of the above points, the present invention normally does not allow the connecting pin once inserted and penetrated into the pin hole to fall off due to external force or the like by the action of the retaining member as in the case of the conventional connecting pin, When it is desired to remove the connecting pin, it is an object of the present invention to provide a connecting pin that can be removed without disabling the function of the retaining member and destroying the pin, that is, reusable. is there.

[0006]

[Means for Solving the Problems]

 The configuration of the connecting pin of the present invention made for the purpose of solving the above-mentioned problem has a retaining member which is axially locked in a groove or a slit formed on the tip side of the pin so as to maintain the inclined posture by a spring force. In a connecting pin such as a pipe material, a small projection is formed on a side surface of the retaining member to be engaged with an edge of the groove or slit of the pin, and the projection is engaged with an edge of the groove or slit of the pin. By stopping the pin, the retaining member is held in a position parallel to the pin within the thickness of the pin.

[0007]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an essential part of an example of the connecting pin of the present invention, FIG. 2 is a sectional view of the connecting pin of FIG. 1 in a state in which the function of a retaining member is disabled, and FIG. 3 is a conventional connecting pin. It is a side view for explaining the usage pattern of.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a pin body having a head 1a at a rear end and a slit-shaped groove 2 formed at a front end side. A plate-shaped stopper member 3 is inserted into the groove 2 here. Is formed as an example of the connecting pin Jp by stopping with the pin 4 with the leaf spring 5 interposed therebetween, and the conventional connecting pin 10 illustrated in FIG. 3 is basically the same as this configuration, The problem is as described above.

In the present invention, the above-described problem is solved by adding the following configuration to the connecting pin Jp, and this point will be described below.

In the connecting pin Jp shown in FIGS. 1 and 2, the retaining member 3 in this example is always urged by the repulsive force of the leaf spring 5 so that the front side (the left side in the figure) is inclined downward. It has been. Therefore, the upper surface 3a on the rear half side of the retaining member 3 which protrudes from the outer shape of the pin body 1 is pushed down by the action of the inner peripheral surface of the hole when the spring 5 is inserted into the hole of the pipe material. Since it is immersed inside, there is no hindrance to insertion.

However, when removing the pin Jp from the pin hole of the pipe material, the rear end face 3b of the retaining member 3 protruding from the outer shape of the pin body 1 acts as a removal preventing surface. When the distal end is located inside the pipe material, it is practically impossible to change the attitude of the member 3 from outside (see FIG. 3).

Therefore, in the embodiment of the present invention, the upper surface of the groove 2 at the tip of the pin main body 1 is slightly cut to form a step portion 1b lower (smaller in diameter) than the outer diameter of the pin, while the retaining member 3 is prevented. In the length direction, a small projection 3c is formed on the side corresponding to and opposite to the stepped portion 1b. When the member 3 is in a horizontal (parallel to the pin body 1) posture as shown in FIG. The protrusion 3c is hooked on the step portion 1b so that the horizontal posture is held against the repulsion of the spring 5.

Therefore, when the connecting pin of the present invention is inserted into the pin hole for connecting the pipe material, the connecting pin is operated (worked) in exactly the same manner as the conventional connecting pin 10 of FIG. However, when it is desired to remove the pin Jp from the pin hole, the position of the retaining member 3 inserted in the pin hole and in the position shown in FIG. 1 is changed to horizontal as shown in FIG. In this case, the removal preventing surface 3b may be stored in the outer diameter of the pin body 1 and invalidated.

[0014]

[Effect of the invention]

 The present invention is as described above, such as a pipe material having a retaining member in which a connecting pin is axially secured to a groove or a slit formed on the tip side of the pin by a spring force so as to maintain an inclined posture. In the connecting pin of (1), a small projection is formed on the side surface of the retaining member to be engaged with the edge of the groove or slit of the pin, and the projection is engaged with the edge of the groove or slit of the pin. As a result, the retaining member is held in a position parallel to the pin within the thickness of the pin, so when removing the connecting pin, the action of the retaining member is invalidated and the pin is destroyed. It is possible to remove the pipe material without re-use, that is, it is possible to remove it without changing the connecting pin of the pipe material without breaking the connecting pin as before, and thus Is reasonable .

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an example of a connecting pin of the present invention.

FIG. 2 is a cross-sectional view of the connecting pin of FIG. 1 in a state where a retaining member is disabled.

FIG. 3 is a side view for explaining a usage form of a conventional connection pin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pin main body 2 Slit-shaped groove 3 Retaining member 4 Pin 5 Leaf spring 10 Conventional connection pin Jp Connection pin

Claims (1)

[Utility model registration claims] 1. A connecting pin such as a pipe member having a retaining member which is axially fixed to a groove or a slit formed at a tip end side of the pin by a spring force so as to maintain an inclined posture, and a side surface of the retaining member. A small projection that is engaged with the edge of the groove or slit of the pin, and the projection is engaged with the edge of the groove or slit of the pin, so that the retaining member is within the thickness of the pin. A connection pin that is held parallel to the pin.