CN201916317U

CN201916317U - Telescopic thumbtack

Info

Publication number: CN201916317U
Application number: CN2011200237767U
Authority: CN
Inventors: 任英丽; 刘戎
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2011-08-03
Anticipated expiration: 2021-01-25

Abstract

The utility model discloses a telescopic thumbtack, which comprises a tack cap and a tack body, wherein the tack cap comprises an upper cover, a corrugated pipe and a base; both ends of the corrugated pipe are respectively and fixedly connected with the upper cover and the base of the tack cap; the upper end of the tack body is fixed in the center of the bottom surface of the upper cover; the center of the base is provided with a through hole; and the hole diameter of the through hole is greater than the diameter of the tack body. In the utility model, the tack body is driven by the corrugated pipe to contract so as to prevent fingers from being punctured. The length of the tack body extending out of the base can also be changed according to the strength of people. The telescopic thumbtack is safe to use and is portable.

Description

Flexible by nail

Technical field

The utility model relates to a kind of by nail, and is especially a kind of flexible by nail.

Background technique

In the life, people often use and fix object by nail, and general all is that the nail body directly is fixed on the head of a nail of unlike material by nail, push the head of a nail with hand and fix article, so, very sharp owing to the nail body by nail is directly exposed to the outside, very easily puncture finger, carry inconvenience; Run into objects such as bigger timber of hardness or body of wall when using, because firmly uneven, nail easy sideslip of body or bending cause unnecessary trouble.

The model utility content

The technical problems to be solved in the utility model provides and a kind ofly is easy to carry, safe in utilization flexible by nail, remedied existing deficiency by nail.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of stretching comprises the head of a nail and nail body by nail, the described head of a nail is made up of loam cake, bellows and base, fixedly connected with base with described loam cake respectively in the two ends of described bellows, described nail body upper end is fixed on the center of loam cake bottom surface, center at described base is provided with through hole, and the aperture of described through hole is greater than the diameter of nail body.

Preferably, described loam cake is an inversed taper platform shape, and described base is that upper surface is the taper type of arc shaped surface.

Adopt the beneficial effect that technique scheme produced to be:

1. be connected with bellows between loam cake and base, described bellows can stretch, and works as fixed cover, and when pushing base, the nail body is stretched from the through hole at the center of base, and is sharp as lance; Do not do the time spent when base has external force, bellows is an extended configuration, and the nail point of nail body is arranged in base, and effectively the protection finger is not punctured.

2. the utility model can change the length of the protuberate basic unit of nail body according to people's firmly size, has avoided when running into the bigger object of intensity, and is because unbalance stress makes nail body sideslip or bending, safe in utilization, easy to carry.

Description of drawings

Fig. 1 is flexible sectional view by nail;

Wherein: 1-loam cake; 2-base; 3-bellows; 4-nail body.

Embodiment

Embodiment as described in Figure 1 as can be known, and is flexible by following closely by the head of a nail and following closely body 4 and form; The described head of a nail is made up of loam cake 1, bellows 3 and base 2; Described bellows 3 is made by rubber or plastics, its two ends respectively with loam cake 1 and base 2 adhering junctions; Nail body 4 upper ends embed the center of loam cake 1 bottom surface, and the center of base 2 is provided with through hole, and the aperture of described through hole is greater than the diameter of nail body 4; Under the situation that does not apply external force, described nail body 4 does not expose bellows 3, during use, and compress bellows 3, needle body 4 exposes.

When the utility model is acted on body of wall, firmly push the loam cake 1 of the head of a nail, nail body 4 penetrates body of wall, and the degree of depth of pricking body of wall along with nail body 4 strengthens, and bellows 3 is constantly compressed, and is compressed fully until bellows 3; Bellows 3 stretches during dial-out, and nail body 4 is retracted in the through hole of base 2, and the protection finger is not punctured.And in the utility model, described base 2 also has the effect of anti-non-magnetic shim body 4 sideslips, and it is flexible by nailing on that external force is uniformly applied to.

Claims

1. flexible pressing followed closely, it is characterized in that comprising the head of a nail and nail body (4), the described head of a nail is made up of loam cake (1), bellows (3) and base (2), fixedly connected with base (2) with described loam cake (1) respectively in the two ends of described bellows (3), described nail body (4) upper end is fixed on the center of loam cake (1) bottom surface, center at described base (2) is provided with through hole, and the aperture of described through hole is greater than the diameter of nail body (4).

2. according to claim 1 flexible by nail, it is characterized in that described loam cake (1) is inversed taper platform shape, described base (2) is the taper type of arc shaped surface for upper surface.