CN2462133Y - Screw having structure improved - Google Patents

Abstract

The utility model relates to a screw with an improved structure. Primarily, the upper end part of a screw body is provided with circular spiral screw threads, and the lower end part is provided with triangle spiral screw threads arranged in different angles; a roughly oblique ridge is arranged between a sharp part of the triangle screw threads and the screw body, and the ridge and the screw body form a connecting surface in an arc-shaped crown. The utility model has labor-saving operation and increase practical effects.

Description

Structure improved screw

The utility model relates to a kind of structure improved screw, according to the evolution improvement of the novel case of the approved application of claimant the 88213327th institute, makes screw be constituted the effect that struts timber when sealed, makes operation more laborsaving, to improve the use value of original bill.

Press; The screw that general sealed timber is used, usually establish with spiral helicine circular thread in the screw body, when making it sealed by thread gradually preface screw in timber and fixed, but because the material of some timber is comparatively hard, make this kind screw be difficult for turn, therefore, some dealer is developed and special screw, with should aforesaid demand, wherein, as B. P. 2040769A number, shown in Fig. 1 to 5, disclose a kind of screw 1 of triangular shape thread 11, after this kind screw 1 is machined directly to triangular shape with screw body 10, twist out thread 11 again, and as No. the 5044855th, U. S. Patent, as Fig. 6, shown in 7, then disclose the screw 2 of a kind of bottom gradually-reducing shape, same, make the thread 21 of this screw 2 be triangular shape, no matter and the design of above-mentioned which kind of patent, only can be because of thread 11,21 comparatively sharply and easily screw in timber, for the operation in laborsaving, there is no too greatly and benefit.

Main purpose of the present utility model is to provide a kind of structure improved screw, main between the pointed section and screw body of triangular shape helical thread, be provided with ridge with oblique shape, and make the junction surface of this ridge and screw body, be the protuberance of arcuation, when making screw closure timber, be able to timber be strutted by this ridge portion, be beneficial to thin thread face mistake, make operation more laborsaving, to improve practical effect.

Another purpose of the present utility model is to provide a kind of structure improved screw, and the screw body can be made as triangular shape, four horn shapes or polygonal thread, and makes thread be the arrangement of equal angular or different amount, to be applicable to the timber of different materials.

The purpose of this utility model is achieved in that a kind of structure improved screw, mainly in the upper end of screw body part, be provided with thread with round spiral, the lower end partly then is provided with the helical thread with triangular shape, and make each triangular shape thread be the arrangement of different amount, it is characterized in that: between the pointed section of triangular shape thread and screw body, be provided with the ridge that generally is oblique shape, and the junction surface of this ridge and screw body is the ridge of arcuation.

Described thread can be made as cerioid, and is the arrangement with angle or different amount.

Described triangular shape or cerioid thread directly twist with circular material.

Owing to adopt such scheme: operate more laborsaving, with the raising practical effect.

Main feature of the present utility model and novelty thereof will cooperate following appended graphic embodiment's detailed description and more become clear, as shown in the figure:

Fig. 1 is the schematic representation of the screw body of a known screw.

Fig. 2 is the B-B sectional drawing of Fig. 1.

Fig. 3 is the schematic representation of the thread of a known screw.

Fig. 4 is the C-C sectional drawing of Fig. 3.

Fig. 5 is the elevational schematic view of Fig. 3.

The structural representation of another known screw of Fig. 6.

Fig. 7 is the elevational schematic view of Fig. 6.

Fig. 8 embodiment's schematic perspective view of the present utility model.

Fig. 9 another embodiment's schematic representation of the present utility model.

Figure 10,11 is two kinds of partial enlarged drawings of Fig. 9.

Figure 12 another embodiment's machining state schematic representation of the present utility model.

Figure 13 is the round shape material sectional view of Figure 12.

Figure 14 is the sectional drawing of Figure 12.

Figure 15,16 two kinds of sealed embodiment's schematic representation of the present utility model.

Figure 17,18 another embodiment's schematic representation of the present utility model.

See also Fig. 8, the utility model is mainly in the upper end of screw body 3 part, be provided with thread 31 with round spiral, the helical thread 32 with triangular shape is partly then established in the lower end, make this triangular shape thread 32 be the arrangement of different amount, wherein, 3 of the pointed section 321 of this triangular shape thread 32 and screw bodies, be provided with the ridge 33 of oblique shape, and make this ridge 33 and the junction surface of screw body 3 be the ridge 331 of arcuation,, be able to timber be strutted by the thickness of this ridge 33 when screw body 3 during in sealed timber, be beneficial to thin thread face 322 (not establishing the thread face of ridge) and pass through, make operation more laborsaving.

See also shown in Fig. 9,10,11, the utility model can be provided with triangular shape thread 32 with equal angular in screw body 3, and same pointed section 321 and 3 of wooden bodies in each thread 32 are established with ridge 33, and the arcuation ridge, to be common to different timber.

And as shown in figure 12, the utility model also can be provided with the triangular shape thread 32 of earlier figures 9 arrangement into different amount, makes its shape in the shape of a spiral that is arranged above and below, be beneficial to timber sealed,, no matter and which kind of pattern to twist screw with, the utility model will be justified the material 4 of shape, as shown in figure 13, directly processing, triangular shape thread 32 is formed, and form round shape wood body 3 parts of central authorities simultaneously, make course of working comparatively simple and easy, make the pointed section 321 of thread 32 more sharp keen, as shown in figure 14.

Please consult shown in Figure 15,16 simultaneously, the utility model is in actual when being locked on timber 5, because each triangular shape thread 32 is thicker because of the design of ridge 33, after it is to timber 5 cuttings, with the opening 51 that timber 5 is formed as ridge 33, make subsequently the thin thread face 322 that screws in be able to pass through this opening 51 down, make when sealed more laborsaving, quick in the state of no any resistance.

See also Figure 17, thread of the present utility model also can be made as five-cornuted thread 34, and with the timber of suitable different materials, and as shown in figure 18, this five-cornuted thread 34 can be made as the helical arrangement of different amount, is beneficial to sealed turn.

In sum, the utility model is established with oblique shape ridge in the pointed section of the thread of original bill and the junction surface of screw body, makes thread when screwing in timber, constitutes to strut effect, makes operation more laborsaving, improves the practical effect of original bill, files an application patent in accordance with the law.

Claims (3)

1, a kind of structure improved screw, mainly in the upper end of screw body part, be provided with thread with round spiral, the lower end partly then is provided with the helical thread with triangular shape, and make each triangular shape thread be the arrangement of different amount, it is characterized in that: between the pointed section of triangular shape thread and screw body, be provided with the ridge that generally is oblique shape, and the junction surface of this ridge and screw body is the ridge of arcuation.

2, structure improved screw as claimed in claim 1, it is characterized in that: described thread can be made as cerioid, and is the arrangement with angle or different amount.

3, structure improved screw as claimed in claim 1 is characterized in that: described triangular shape or cerioid thread directly twist with circular material.

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