CN2436710Y

CN2436710Y - Screw

Info

Publication number: CN2436710Y
Application number: CN 00218382
Authority: CN
Inventors: 沈继勋
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-10
Filing date: 2000-07-10
Publication date: 2001-06-27
Anticipated expiration: 2010-07-10

Abstract

The utility model relates to a screw which comprises a nail body carved with screw threads and a nail head integrated with the nail body. The utility model is characterized in that the side periphery of the nail head is provided with more than two grooves. A screw driver which is especially used for assembling or disassembling the screw comprises a cutter handle and a cutter rod fixedly connected with the cutter handle. The screw driver is characterized in that the tail end of the cutter rod is inwards concave and is matched with the nail head, and the inner side of the inwards concave point is provided with convex ribs used for matching with the grooves on the side periphery of the nail head. Slipping phenomena are not easy to occur between the screw and the screw driver and common consumers can be prevented from opening the screw by adopting the scheme.

Description

Screw

The utility model relates to a kind of nail, is meant a kind of screw especially.

The ailhead top of existing screw generally has the groove of yi word pattern or blossom type, when these screws of screw-driver installation or removal, skidding usually takes place; Some product in addition, if any the product of danger, sophisticated product, electric product etc., do not allow ordinary consumer at will to open and only allow some people such as manufacturer, guarantee unit etc. to open, if use above-mentioned yi word pattern or blossom type screw attachment, then ordinary consumer is easy to open, like this, just do not reach the purpose that the restriction ordinary consumer is opened.

The purpose of this utility model is to provide a kind of installation or removal can reduce skidding at the present situation of above-mentioned prior art and can limit the screw that ordinary consumer is opened.

Scheme of the present utility model is such: this screw, comprise the nail body that is carved with screw thread and with the ailhead of nail body one, it is characterized in that: at the groove of described ailhead side Zhou Kaiyou more than two.A kind of screw-driver that is specifically designed to this screw of installation or removal, the knife bar that comprises handle of a knife, is fixedly connected with handle of a knife, it is characterized in that: described knife bar end concave, and match with ailhead, and have the convex tendon that matches with the groove in described ailhead side week in the inboard of interior recess.

Adopt such scheme, just can make to be difficult between screw and the screw-driver producing skidding, and can avoid ordinary consumer to open screw.

Description of drawings:

Fig. 1 is the structural representation of the utility model one embodiment's tapping screw;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the Full dog point socket set knife structure schematic representation that is used for installation or removal the utility model screw;

Fig. 4 is the worm's eye view of Fig. 3;

Fig. 5 is the partial enlarged drawing of Fig. 4.

Below in conjunction with above-mentioned accompanying drawing the utility model is further specified:

Screw as shown in Figure 1 comprises the ailhead 2 of the nail body 1 that is carved with screw thread and 5 nail bodies, 1 one, and ailhead 2 roughly is circle and closes shape, and has groove 3 on the outer side wall of described ailhead 2.As shown in Figure 2, preferably have three grooves, the dawn can not be less than 2.Match the screw-driver that uses with this screw as shown in Figure 3, comprise handle of a knife 4 and knife bar 5, have groove 6 at the knife bar end, the groove 6 of this setting just can hold the ailhead 2 of screw, and on the madial wall of groove 6, be provided with convex tendon 7, shown in Fig. 4,5, convex tendon 7 matches with groove 2 on the ailhead 3.

When using this screw and screw-driver, the groove 6 on the screw-driver covers on the ailhead 2 of screw, and the convex tendon on the groove 66 just embeds in the groove 3 on the ailhead 2, like this, just can make between screw and the screw-driver to be difficult for skidding.Only to producer and maintenance provider's supply, therefore, ordinary consumer just can not be opened this screw to this screw-driver.

Claims

1. screw, comprise the nail body that is carved with screw thread and with the ailhead of nail body one, it is characterized in that: at the groove of described ailhead side Zhou Kaiyou more than two.

2. screw as claimed in claim 1 is characterized in that: described ailhead is round table-like.

3. screw as claimed in claim 1 is characterized in that: described groove has three.

4. screw-driver that is specifically designed to installation or removal screw as claimed in claim 1, the knife bar that comprises handle of a knife, is fixedly connected with handle of a knife, it is characterized in that: described knife bar end concave, and match, and have the convex tendon that matches with the groove in described ailhead side week in the inboard of interior recess with ailhead.

5. screw-driver as claimed in claim 4 is characterized in that: described convex tendon quantity equates with described groove quantity.