JP3031983U - Ramming pin for construction - Google Patents

Abstract

(57) [Abstract] [Purpose] It is difficult to pull out when it is driven into wood and fixed. [Structure] The construction driving pin 1 has, for example, a length of 100 m.
It is made of a metal round rod having a diameter of 12 mm and a diameter of 12 mm, and its front end portion 1a is slightly tapered, and six projections 1c project outwardly around the rear end portion 1b.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a construction driving pin used for joining beams, for example, in a construction work.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, in wooden construction, when joining beams to each other, notches have been formed in each beam, and a method of joining these together and joining them has been often used.

However, the method of making the cuts and combining the cuts has a problem that the setup takes time and the efficiency is extremely low.

[0004]

[Problems to be solved by the device]

 Therefore, in recent years, beams have been joined with an intervening auxiliary metal fitting, and the pin metal fitting is fixed by inserting it into the auxiliary metal fitting. In the case of, there is a possibility that the pin fitting may come off.

An object of the present invention is to solve the above-mentioned problems and to provide a construction driving pin that is hard to come out of wood after driving.

[0006]

[Means for Solving the Problems]

 The construction driving pin according to the present invention for achieving the above-mentioned object is a construction driving pin to be fixed to construction wood for fixing, and is made of a metal round bar, and its tip portion is slightly tapered. In addition, a plurality of protrusions are formed around the rear end portion.

[0007]

[Embodiment of device]

 The present invention will be described in detail with reference to the illustrated embodiment. As shown in FIGS. 1 to 3, a construction driving pin 1 according to the present invention is formed by, for example, forging based on a metal round bar body having a length of 100 mm and a diameter of 12 mm, and its tip 1a. Is slightly tapered, and for example, six projections 1c are projected outwardly around the rear end portion 1b. These projections 1c have an inclined portion that expands outwardly from the front end side toward the rear end side in order to make it easy to drive and hard to remove.

The driving pin 1 is used, for example, when joining the first beam 11 and the second beam 12 as shown in FIG. Connection fittings 13 are fixed to the first beam 11 in advance by, for example, four sets of bolts 14 and nuts 15.

Further, the second beam 12 is formed with a notch 12a for inserting the connecting fitting 13, and a bolt 16 for engaging with the hook portion 13a of the connecting fitting 13 is formed in the notch 12a. It is inserted through the hole 12b provided in the second beam 12 and fixed by the nut 17.

First, the second beam 12 is temporarily fixed to the connection fitting 13 fixed to the first beam 11, but the connection fitting 12 is fitted into the notch 12 a of the second beam 12 and the bolt is inserted. When 16 is locked to the hook portion 13a of the connection fitting 13, the second beam 12 is temporarily fixed to the first beam 11 as shown in FIG.

Next, the driving pin 1 is driven by a hammer from a hole 12c formed in the second beam 12 so that the tip portion 1a is a hole of the connection fitting 13 and a hole 12c on the other side of the second beam 12c. And until the rear end 1b is completely hidden in the hole 12c of the second beam 12. Then, by driving the driving pin 1 into the remaining three holes 12c as well, the first and second beams 11 and 12 are firmly fixed to each other via the connection fitting 12.

At this time, since the projection 1c of the driving pin 1 is embedded in the second beam 12 with a sufficient resistance force, the driving pin 1 can be loosened and come out later by the internal shaft. It does not rotate around the heart.

Further, even when the driving pin 1 is set aside during the work at a high place, the driving pin 1 does not roll and drop downward due to the existence of the projection 1c.

[0014]

[Effect of device]

 As described above, the construction driving pin according to the present invention has a large resistance even if it is driven into wood and has a large resistance, and there is no fear that it will later come loose or come out.

[Brief description of drawings]

FIG. 1 is a front view.

FIG. 2 is a plan view.

FIG. 3 is a side view.

FIG. 4 is an explanatory diagram before joining the beams to each other.

FIG. 5 is an explanatory diagram after joining the beams to each other.

[Explanation of symbols]

 1 Driving pin 1c Protrusion 11, 12 Beam 13 Connection fitting

Claims (2)

[Scope of utility model registration request] 1. A construction hammering pin to be fixed to construction wood for fixing, which is made of a metal round bar, has a slightly tapered front end, and has a plurality of protrusions around the rear end. A construction driving pin characterized by being formed. 2. The driving pin for construction according to claim 1, wherein the projection is inclined so as to expand outward as it advances from the front end side to the rear end side.