CN201599289U

CN201599289U - Expansion screw with convenient disassembly

Info

Publication number: CN201599289U
Application number: CN201020130732XU
Authority: CN
Inventors: 刘新发
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-15
Filing date: 2010-03-15
Publication date: 2010-10-06
Anticipated expiration: 2020-03-15

Abstract

The utility model relates to an expansion screw with convenient disassembly, which can effectively solve the problems of the conventional expansion screw such as the waste of raw materials and high cost caused by inconvenient disassembly and unavailability for repeated use. To solve the problems, the utility model adopts the technical scheme that the expansion screw includes a screw rod, a screw tube and a nut, wherein an expansion flap head is mounted at the front end of the screw tube, a tapered groove is formed at the rear part of the expansion flap head, threads are formed on the inner wall of the rear end of the screw tube, the screw rod is screwed in the screw tube through the threads, the front end of the screw rod is tapered and is positioned in the tapered groove, and a flat washer, a spring washer and the nut are sequentially mounted on the screw rod extending out of the screw tube from inside to outside. The utility model with unique structure and convenient use is an innovation of expansion screws.

Description

Swell fixture that can be for convenience detach

One, technical field

The utility model relates to the connection fastening piece, particularly a kind of swell fixture that can be for convenience detach.

Two, background technique

Swell fixture is used for object is fixed on body of wall, its principle is, utilize the wedge shape gradient to impel expansion to produce frictional force, reach fixed effect, one on screw has screw thread, and there is tapering the other end, outer bread one iron sheet cylinder (having plenty of steel pipe), half has some otch iron sheet cylinder (steel pipe), it is filled in the hole of accomplishing fluently on the wall together, split nut then, nut pulls outward screw, tapering is drawn in the iron sheet cylinder, the iron sheet cylinder is tightly fixed on the wall by spreading, generally is used for protective grating, rain cover, air-conditionings etc. are at cement, fastening on the materials such as brick, but owing to its structural reason, existing swell fixture dismounting trouble recycles difficulty, causes user cost to increase, therefore, the improvement of swell fixture and innovation are the problems that needs solution.

Three, model utility content

At above-mentioned situation, for solving the defective of prior art, the purpose of the utility model just provides a kind of swell fixture that can be for convenience detach, can effectively solve existing swell fixture is inconvenient to dismantle, can not reuse the waste of raw materials and the high problem of cost that cause, the technological scheme of its solution is, comprise the nail bar, nail pipe and nut, nail pipe front end has the expanding petal head, the expanding petal back of head constitutes conical socket, on the inwall of nail pipe rear end screw thread is arranged, and be installed with the nail bar at nail in the pipe through screw thread, the tapered head of nail bar front end, and place in the conical socket, stretch out on the outside nail bar of nail pipe plain washer is housed from inside to outside successively, spring washer and nut, the utility model structure uniqueness, easy to use, be the innovation on the swell fixture.

Four, description of drawings

Fig. 1 is a main pseudosection of the present utility model.

Fig. 2 is a nail pipe left view of the present utility model.

Five, embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Provide by Fig. 1 to Fig. 2, the utility model comprises nail bar, nail pipe and nut, nail pipe 1 front end has expanding petal head 2, expanding petal head 2 rear portions constitute conical socket 4, on the nail pipe 1 rear end inwall screw thread is arranged, and in nail pipe 1, be installed with nail bar 5, the tapered head of nail bar 5 front ends through screw thread, and place in the conical socket 4, stretch out on the nail bar 5 of following closely pipe 1 outside plain washer 6, spring washer 7 and nut 8 are housed from inside to outside successively.

In order to guarantee practical effect, said nail bar 5 outer ends have and the circular or square head of a nail 3 of nail bar 5 all-in-one-pieces.

Said expanding petal head 2 is for radially waiting cylindrical body that is cut into four or six lobe bodies.

The novel use condition of this use is, to follow closely bar 5 earlier is inserted on the object that needs to fix, to follow closely bar 5 then screws in the nail pipe 1, and it is filled in the hole of accomplishing fluently on the wall together, the turn head of a nail then, the nail bar is moved forward in the nail pipe, conical head on the nail bar screws in the conical socket 4, expanding petal head 2 is strutted, make body of wall, form friction self-locking between the expanding petal head, be fixed in the body of wall thereby will follow closely pipe, screw nut then, object is fixed on the body of wall through spring washer and plain washer, when needs are dismantled, counterrotating nail bar, nail bar conical head is withdrawed from conical socket, pulling nail bar, the expanding petal head 2 of nail tube end resets under the effect of pulling force and body of wall, and then will follow closely pipe and extract in the wall hole.

The utility model structure uniqueness, installation and convenient disassembly, reusable have reduced user cost, are the innovations on the swell fixture, have remarkable economical and social benefit.

Claims

One kind can be for convenience detach swell fixture, comprise nail bar, nail pipe and nut, it is characterized in that, nail pipe (1) front end has expanding petal head (2), expanding petal head (2) rear portion constitutes conical socket (4), on the inwall of nail pipe (1) rear end screw thread is arranged, and in nail pipe (1), be installed with nail bar (5) through screw thread, the tapered head of nail bar (5) front end, and place in the conical socket (4), stretch out on the outside nail bar (5) of nail pipe (1) plain washer (6), spring washer (7) and nut (8) are housed from inside to outside successively.
2. swell fixture that can be for convenience detach according to claim 1 is characterized in that, said nail bar (5) outer end has and the circular or square head of a nail (3) of nail bar (5) all-in-one-piece.
3. swell fixture that can be for convenience detach according to claim 1 is characterized in that, said expanding petal head (2) is for radially waiting cylindrical body that is cut into four or six lobe bodies.