CN102305230A

CN102305230A - Capless anti-slip screw

Info

Publication number: CN102305230A
Application number: CN201110248944A
Authority: CN
Inventors: 王忠杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-28
Filing date: 2011-08-28
Publication date: 2012-01-04

Abstract

The invention discloses a capless anti-slip screw, which consists of a screw cap and a screw body below the screw cap. The center of the upper surface of the screw cap is provided with a groove matched with a holder of a screwdriver; the bottom surface of the groove is provided with a cruciform slot; the screw cap is detachably connected with the screw body; the upper surface of the screw body is provided with a threaded hole; the lower surface of the screw cap is provided with a threaded rod matched with the threads of the threaded hole; the screw body comprises a spiral rod-shaped upper section with threads, and a conical rod-shaped lower section without threads; and the conical rod-shaped lower section without threads extends to form a sharp tail end. By the capless anti-slip screw, a screw tip can be prevented from slipping so as to avoid scratching the surface of a target object; and the screw body and the screw cap are detachable, so when the screw body of the screw enters a wood surface, the screw cap can be screwed off, the wood surface is prevented from generating cracks, and the attractiveness of the surface of furniture is ensured.

Description

The capless anti-skid screw

Technical field

The present invention relates to a kind of hardware, especially a kind of capless anti-skid screw.

Background technique

Screw is a widely used part in the every field such as carpenter, metal working, electrician, and screw adopts screw-in mode target approach object, initially screws in the stage; Screwing in resistance is difficult for greatly accurately screwing in; Crooked easily, be difficult for the location when initially screwing in, cause the sharp slippage of nail, scratch target object surface easily; Because screw contact not firmly with screw-driver, cause screw-driver slippage, scratch target object surface easily in addition, firmly inhomogeneous sometimes, might screw is stubborn askew even with the hand scuffing, make troubles to the user; In addition, in the production of wooden office, teaching aid and furniture, the producer need embed wood surface with the head of a nail in order to make the attractive in appearance of furniture surface paint, can cause wood surface to produce slight crack like this, influences attractive in appearance.

Summary of the invention

The objective of the invention is to overcome deficiency of the prior art, the target object surface can effectively be avoided scratching in the using process in location and contact firm capless anti-skid screw with screw-driver easily when a kind of initial screw-in is provided.

Technological scheme of the present invention is: a kind of capless anti-skid screw; Nail body by the head of a nail and head of a nail below constitutes; Said head of a nail upper surface central position is provided with the groove with screw-driver knife bar coupling, and this groove floor is provided with cross recess, and the said head of a nail and nail are as the mode of removably connecting; The surface is provided with tapped hole on one's body following closely; Head of a nail lower surface is provided with the threaded stem with this tapped hole screw thread coupling, and said nail status is shaft-like epimere of threaded spiral and threadless cone rod shape hypomere, and wherein threadless cone rod shape hypomere extends into sharp distal.

The degree of depth of said groove is 5mm.

Beneficial effect of the present invention is: because the head of a nail of the present invention is provided with the groove of retaining screw cutter knife bar; Therefore in use can avoid screw-driver slippage, scratch target object surface; Its threadless cone rod shape back segment and sharp distal can impel screw at target approach object quickly and accurately of initial screw-in stage; Thereby positioning screwn avoids following closely sharp slippage, scratch target object surface more easily; Therefore will follow closely the body and the head of a nail and be designed to detachablely, after the nail body of this screw submerges wood surface, can the head of a nail be screwed off, prevent wood surface generation slight crack, guarantee the attractive in appearance of furniture surface.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a plan view of the present invention;

Fig. 3 is a sectional view of the present invention.

Among the figure: 1, the head of a nail; 2, groove; 31, the shaft-like epimere of spiral; 32, cone rod shape hypomere; 33, sharp distal; 4, cross recess; 5, tapped hole; 6, threaded stem.

Embodiment

To combine accompanying drawing and specific embodiment that the present invention is done further explain below.

Like Fig. 1, Fig. 2 and shown in Figure 3, a kind of capless anti-skid screw is made up of the nail body of the head of a nail 1 and the head of a nail 1 below; The said head of a nail 1 upper surface central position is provided with the groove 2 with screw-driver knife bar coupling; The degree of depth of this groove 2 is 5mm, and these groove 2 bottom surfaces are provided with cross recess 4, and the said head of a nail 1 and nail are as the mode of removably connecting; The surface is provided with tapped hole 5 on one's body following closely; The head of a nail 1 lower surface is provided with the threaded stem 6 with this tapped hole 5 screw threads coupling, and said nail status is shaft-like epimere 31 of threaded spiral and threadless cone rod shape hypomere 32, and wherein threadless cone rod shape hypomere 32 extends into sharp distal 33.

Claims

1. capless anti-skid screw; Nail body by the head of a nail (1) and the head of a nail (1) below constitutes; It is characterized in that: the said head of a nail (1) upper surface central position is provided with the groove (2) with screw-driver knife bar coupling, and this groove (2) bottom surface is provided with cross recess (4), and the said head of a nail (1) and nail are as the mode of removably connecting; The surface is provided with tapped hole (5) on one's body following closely; The head of a nail (1) lower surface is provided with the threaded stem (6) with this tapped hole (5) screw thread coupling, and said nail status is shaft-like epimere of threaded spiral (31) and threadless cone rod shape hypomere (32), and wherein threadless cone rod shape hypomere (32) extends into sharp distal (33).

2. capless anti-skid screw according to claim 1 is characterized in that: the degree of depth of said groove (2) is 5mm.