CN87207410U - Expanded-riveted plastic bolt pipe - Google Patents

Abstract

The utility model discloses an expanded-riveted plastic bolt pipe which is a novel fastening element used for fastening the ornament of the architectural decoration. A double left-handed thread structure is adopted by the utility model, and the double left-handed thread structure is formed by the combination of the taper expanding pipe and the cone quoin. While in use, the expanding-riveting function can be provided for the expanded body. The utility model has big fastening strength, safety and reliability.

Description

Expanded-riveted plastic bolt pipe

The utility model belongs to a kind of fastening piece in the architectural hardware field, and it is applicable in the architectural decoration plays fixation to jewelry.

Correlation technique of the present utility model is " plastics expand and take aim at bolt tube " (being called for short " expand tube ") commonly used in architectural decoration at present.Should " expand tube " expand and the resistance groove is formed one by a tapered hole body, two bloated lobes and two.In the fixed hole of accomplishing fluently in advance on the bloated body (as the wall of building) of " expand tube " insertion quilt, relying on expands props up and the drag of resistance groove to the hole wall generation, is not slided when wood screw is screwed into tapered hole in use.When wood screw is screwed into certain depth in tapered hole, because of the lobe that expands is subjected to the external force effect to be adjacent to hole wall to the both sides distending, the tension effect that produces by the resistance groove of the lobe outer ring of expanding reach with by bloated body fixation.But should " expand tube " have following deficiency in use: quality excessive when the fixed hole aperture of the body that expanded or the body that expanded is loose, and when wood screw turned, " expand tube " can produce in the body fixed hole that expanded and skid, and has a strong impact on fastening effect; In addition, owing to be somebody's turn to do the close mouth of pipe place of the fastening position force bearing point of " expand tube ", pulling force is big inadequately during use, and fastening strength is poor.

The purpose of this utility model is to improve on the basis of " expand tube ", design a kind of novel plastic fastener---" plastics riveting expand bolt tube " (being called for short " riveting pipe "), make it not only play the effect of " swelling " in use, play simultaneously " riveting " tight effect again, thereby can overcome above-mentioned deficiency, and increase its fastening strength.

Design proposal of the present utility model is the bloated lobe 4 of tapering that an end of expand tube is designed to flare, has on inclined-plane in it and sets one's teeth on edge 3.By node 6 both bindings are one at the top of the bloated lobe 4 of tapering and the waist of a taper tenon 7 identical with its tapering.It is identical with 3 but direction is opposite to open 9,9 the modulus of setting one's teeth on edge on the conical surface of taper tenon 7.After in the utility model inserts by the fixed hole of bloated body 13, suitably knock with the end of hammer the cone shape hole 1 of riveting pipe, it is extend into reach certain depth in the hole, tie point 6 disconnects because of hitting the power effect outside being subjected to, the bloated lobe 4 of the tapering that band is set one's teeth on edge forms relative movement with the taper tenon 7 that band is set one's teeth on edge, tapering expands lobe 4 to the fixed hole hole wall swelling of both sides distending with the body 13 that expanded, and taper tenon 7 closely hooks by setting one's teeth on edge mutually with the bloated lobe 4 of tapering, taper tenon 7 has played the effect of " rivet ", the tapering lobe 4 that expands is riveted tightly in fixed hole, reached wood screw and just in by bloated body 13, played fixation before also not being screwed into the riveting pipe.Then, be screwed into wood screw 12 in the cone shape hole 1 of riveting pipe, when wood screw 12 was screwed into certain depth, tapering the expand expansive force of fixed hole hole wall of body 13 of 4 pairs of quilts of lobe that expands increased, the stretching resistance that resistance groove 5 on the bloated lobe outer ring of tapering produces also increases, and reaches better fastening effect.

The utility model accompanying drawing is as follows:

Fig. 1 is the utility model structural drawing.

Fig. 2 is the utility model operational diagram.

Embodiment of the present utility model is shown in accompanying drawing 1,2.Cone shape hole 1 is opened at an end center of riveting pipe 2 as shown in Figure 1, the other end is the bloated lobe 4 of tapering, be equipped with horizontal resistance groove 5 on the outer garden face of the bloated lobe 4 of tapering, the interior inclined-plane of the bloated lobe 4 of tapering is the horn mouth shape and has sets one's teeth on edge 3, opens distinguish groove 10 along a section garden center line the bloated lobe 4 of tapering is divided into two lobes.Its bottom 8 of the center drilling of taper tenon 7 is sphere shape, and its external diameter is consistent with the external diameter of riveting pipe.It is identical with 3 but direction is opposite to open 9,9 the modulus of setting one's teeth on edge on the inclined-plane of taper tenon 7.By node 6 both being linked between middle part, the inclined-plane waist of bloated lobe 4 tops of tapering and taper tenon 7 is one, (forming one when promptly when the die sinking tool, leaving the room injection moulding), be that the set one's teeth on edge first half on inclined-plane of the band of taper tenon 7 stretches in the horn mouth that taper expand tube 4 bands set one's teeth on edge, Lower Half is emerging in bell-mouthed outside, because both taperings are identical, so slightly gapped between 3 and 9.The utility model adopts macromolecular material (as materials such as nylon) to shape through injection moulding, and its specification can be φ 6 * 30mm, φ 8 * 45mm, φ 10 * 55mm, φ 12 * 60mm etc. (also can need given size die sinking injection moulding by the use object).As shown in Figure 2, the utility model is inserted by (aperture of fixed hole is consistent with the riveting external diameter of pipe in the fixed hole of bloated body 13, also can be loose, but the degree of depth in hole should not be too dark), at the bottom of with hammer the riveting pipe being knocked the taper tenon 7 that forces the riveting pipe and sinks to the hole, under external force, the bloated lobe 4 of tapering disconnects with the junction nodes 6 of taper tenon 7, the bloated lobe 4 of tapering forms relative movement with taper tenon 7, tapering expands lobe 4 to the fixed hole hole wall swelling of both sides distending with the body 13 that expanded, setting one's teeth on edge on the while 4 and 7 closely hooks mutually, taper tenon 7 plays the effect of " rivet ", the tapering lobe 4 that expands is riveted tightly in the fixed hole of body 13 that expanded tightly, made and the riveting pipe just was fixed on before wood screw 12 also is not screwed into its cone shape hole 1 in the fixed hole of the body 13 that expanded.Then overlap upper mounted plate 11, with cone shape hole 1 screwin of wood screw 12 from the riveting pipe, along with wood screw 12 be screwed into and when reaching certain depth, the bloated lobe 4 of tapering is subjected to the expansive force continuation increase of the expansive force effect of wood screw 12 to the fixed hole hole wall of the body 13 that expanded, the stretching resistance that 5 pairs of hole walls of resistance groove on the tapering expand tube outer ring produce also increases, up to wood screw 11 is tightened, its fastening strength is better.

The utility model has the advantages that employing " is expanded ", " riveting " combination and the structure of setting one's teeth on edge, fastening strength increases, and is safe and reliable, saves simultaneously two swollen, simplified processing technology.

Claims (1)

1, a kind of plastics expand tube that in architectural hardware, is used as fastening piece, it is characterized in that this expand tube is formed by the bloated lobe of tapering with by node and the bloated lobe binding of tapering all-in-one-piece taper tenon, the head of the bloated lobe of tapering is horn mouth and has on the inclined-plane sets one's teeth on edge, have on the conical surface of taper tenon and set one's teeth on edge, this modulus of setting one's teeth on edge and tapering expand on the lobe horn mouth inclined-plane set one's teeth on edge identical but direction is opposite.

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