CN2361697Y - Double-lock self-tapping nail for use on color steel tile roof - Google Patents

Abstract

The utility model relates to a double-lock self-tapping nail for being used on a color steel tile roof, which is composed of a nail cap, a bolt body which is mutually and vertically connected with the nail cap and is provided with self-tapping screw threads at the top, a bolt pad, and a nut, wherein the bolt pad is sheathed on the bolt body, and the nut is screwed under the bolt pad. The self-tapping nail of the utility model can be adopted to reinforce a color steel tile roof, the tightening thickness can be increased, and the using requirement of wind load can be conformed. Even if the utility model is used at regions with large wind in the China, the double-lock self-tapping nail can satisfy the principle of safe use.

Description

The dual-lock self-threading pin that uses on the color steel roofing

The utility model belongs to a kind of connector, relates to a kind of self threading pin, particularly relates to the dual-lock self-threading pin that uses on a kind of color steel roofing.

Since the nineties, domestic a lot of steel work roofings have successively adopted import or the homemade color galvanized steel watt material (as shown in Figure 1) that is coated with, and fixedly connected mode has also adopted the affixed technology of various types of self threading pins (as shown in Figure 2).This technology is easy and simple to handle than the two pad hook nail consolidation methods of the arch form in past, save time, laborsaving.But because the fastening thickness of self threading pin and crimping purlin channel-section steel generally has only 2.5-3.0mm (as shown in Figure 3), so resilience takes place or because of reasons such as wind, rain, snow and vibrations, just can become flexible soon in meeting behind nailing.Particularly adopt the above-mentioned bigger regional applicability of wind-force that is connected poorer.The wind load of (GBJ9-87) stipulating according to " State Standard of the People's Republic of China " is greater than 0.40KN/m ²Wide geographic area, this self threading pin is only by the fastening thickness of self tapping of 2.5-3.0mm, is that the safe handling that far can not satisfy wind load requires with service life.

The purpose of this utility model provides a kind of dual-lock self-threading pin, can overcome the deficiency of existing self threading pin when fastening steel work roofing, uses standard thereby satisfy wind load, prolongs the service life of roofing.

For achieving the above object, the utility model is taked following design scheme: the dual-lock self-threading pin that uses on the color steel roofing is by the head of a nail, mutually the vertical key that is connected, has tapping screw thread on it, bolt pad, nut are formed with the head of a nail, described bolt cushion cover is loaded on the key, is connected with described nut under it.

Adopt self threading pin described in the utility model to reinforce color steel roofing, can increase fastening thickness, meet the wind load instructions for use, both made in the bigger area of China's wind-force and used, still can satisfy the principle of safe handling.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 watt places scheme of installation on the building roof cant beam for the prior art steel of prizing

Fig. 2 is the operation instruction schematic diagram that adopts the fastening color steel of general self threading pin watt in the prior art on cant beam

Fig. 3 is the installation thickness schematic diagram of self threading pin in the prior art

Fig. 4 is a shape schematic diagram of the present utility model

Fig. 5 is for adopting the use schematic diagram of the fixing color steel of the utility model watt

As shown in Figure 4, the dual-lock self-threading pin that uses on the color steel roofing is by the head of a nail 1, form with the head of a nail 1 mutual vertical key 2, bolt pad 3, the nut 4 that is connected, has on it tapping screw thread, circular bolt pad 3 is sleeved on the key 2 by centre bore, and the nut 4 that has internal thread is screwed on the key 2.

The self threading pin of said structure is designed to the national standard diameter, during use self threading pin key 2 squeezed into crimping purlin channel-section steel (as shown in Figure 5), key 2 exposes channel-section steel and partly adds cover bolt pad 3 (being equivalent to add first road lock for self threading pin), it is a fastening again steel nut 4 (being equivalent to add second road lock for self threading pin) down, so just make fastening thickness by original 2.5-3.0mm, be increased to 8.5-9.0mm, fastening thickness has improved three times.Like this fastening can be used on the steel tile structure roofing throughout the country with self threading pin.

Claims (1)

1, the dual-lock self-threading pin that uses on a kind of color steel roofing, by the head of a nail, with the head of a nail mutually the vertical key that is connected, has tapping screw thread on it, bolt pad, nut form, it is characterized in that: described bolt cushion cover is loaded on the key, is connected with described nut under it.

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