CN2886884Y

CN2886884Y - A fixing device

Info

Publication number: CN2886884Y
Application number: CN 200620054255
Authority: CN
Inventors: 李晴荣
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-01-21
Filing date: 2006-01-21
Publication date: 2007-04-04
Anticipated expiration: 2016-01-21

Abstract

The utility model provides a fixed device, comprising a screw and a hood, wherein the screw consists of a cap and a bolt, and the hood comprising a hood top (25) and a hood side (26), a hole (21) is positioned on a hood top (21), the screw is connected with the hood via the hole, a ring groove (13) is arranged on the bolt, a cyclostyle (22) provided on the hood top via the hole parallel to the direction of hood side, the internal surface of a cyclostyle (22) uplift at an angle with the hole (21), and a directional slot (23) is distributed on the cyclostyle (22). The screw and the hood cannot lose when they are loosening by the coordination, and the screw can pull and insert the handle to make the maintenance work more convenience, and also resolves the question of the loose easily of the screw.

Description

A kind of fixture

Technical field

The utility model relates to a kind of mechanical device, particularly a kind of mechanical fastening system.

Background technology

In the communications field, generally after connection was finished, for security consideration, surperficial regular meeting had a guard shield that the wiring position is covered for the cable of a lot of design customizations voluntarily or electric wire junction block, and general guard shield fixed form has two kinds:

One, by cooperatively interacting of card and grab guard shield is simply covered above the junction block, this method is simple to operate, does not need other fixture, does not need reliable fastening junction block more suitable to some.

Two, by screw guard shield is fastened on the junction block, often adopts the mode of through hole, matched in clearance, this mode is usually used in the guard shield of fixedly having relatively high expectations is fixed, as shown in Figure 1.

There is following shortcoming in first kind of connected mode:

Guard shield directly overlays above the junction block, guard shield fixing insecure.

There is following shortcoming in second kind of connected mode:

This mode has overcome the fixing unstable shortcoming of butted line seat, because the screw of general fastening guard shield is less, and screw and guard shield adopt through hole, gap fiting mode to fix, after screw is unscrewed, generally all can thoroughly break away from guard shield, cause dropping suddenly in the maintenance process, and may cause and lose, make troubles to maintenance work.

The utility model content

A kind of fixture that the utility model proposes has solved in fixation procedure, the problem that screw comes off easily.

The utility model provides a kind of fixture, comprises screw and guard shield, and screw is made up of nut and screw rod, and guard shield comprises guard shield end face 25 and guard shield side 26, and through hole 21 is arranged on the guard shield end face 25, and annular groove 13 is arranged on the screw rod; Along described through hole, be extended with circular column 22 to the direction identical with the guard shield side, circular column 22 inner surfaces angled protrusions in through hole 21, at least one gathering sill 23 distributes on circular column;

Described screw is connected with guard shield by through hole, and guard shield blocks annular groove 13 on the screw by circular column 22.

Described nut can directly link to each other with annular groove 13, also can link to each other by screw rod 121.

The periphery of preferred nut has annular knurl 15.

Positioning convex 24 is arranged at preferred guard shield bottom.

Uniform four road gathering sills on the preferred circular column 22.

Preferred annular groove 13, the shape broken line type on its annular groove inclined-plane 131 or linear pattern or arc line type.

Compared with prior art, one aspect of the present invention can be by screw with firm being fixed on the terminal block of guard shield, guaranteed also on the other hand to safeguard that screw and guard shield do not break away from all the time in the wiring process, thoroughly solved original only fastening by plain screw, the problem of losing easily.

Description of drawings:

Fig. 1 is existing guard shield fixture;

Fig. 2 A is the screw sectional view that does not have screw rod between nut and annular groove;

Fig. 2 B is the screw sectional view that screw rod is arranged between nut and annular groove;

Fig. 2 C is the screw end view that screw rod is arranged between nut and annular groove;

Fig. 3 A is the bottom view of guard shield;

Fig. 3 B is the sectional view of guard shield;

Fig. 3 C is the end view of guard shield;

Fig. 4 is the bottom view after screw and the guard shield assembling;

Fig. 5 is the end view after screw and the guard shield assembling;

Fig. 6 is an application legend of the present utility model.

Embodiment:

Below in conjunction with specific embodiment a kind of screw of the present utility model and guard shield fixture are described further.

A kind of fixture that the utility model proposes is cooperatively interacted and is formed by screw 1 and guard shield 2.

Screw 1 is made up of nut 11 and screw rod 12.Shown in Fig. 2 A, screw rod 12 is having annular groove 13 near nut, difference along with annular groove inclined-plane 131 shapes, the shape of annular groove also can be different, the shape on annular groove inclined-plane can be linear (as Fig. 2 A), can be (as Fig. 2 B) of broken line type, also can be arc line type, can certainly be other shapes.

Guard shield 2 is made up of guard shield end face 25 and guard shield side 26, described guard shield side 26 can be vertical with guard shield end face 25, become an angle of 90 degrees, also can with guard shield end face out of plumb, this can design different angles according to the actual needs, and the shape of guard shield side can be square certainly, also can be columniform, can be other shapes, this influence concrete enforcement of the present invention yet.In the present embodiment, the side that we select guard shield is perpendicular with the guard shield end face, shown in Fig. 3 C.Through hole 21 is arranged on the guard shield end face, along through hole, be extended with circular column 22 to extending identical direction with the guard shield side, as shown in Figure 3A, the inner surface of this annular 22 is angled protrusions in through hole 21, shown in Fig. 3 B, simultaneously, at least one gathering sill 23 that distributes on circular column 22 is shown in Fig. 3 C, thereby can make through hole suitable expansion in assembling, convenient for assembly.

Annular groove 13 can directly link to each other with nut, fixes guard shield by nut 11, shown in Fig. 2 A.Preferably, we increase screw rod 121 between annular groove 13 and nut 11, shown in Fig. 2 B, the diameter of screw rod 121 is greater than the diameter of guard shield through hole 21, can play the effect of secure shroud, because the existence of screw rod 121 is arranged between guard shield 2 and nut 11, make between guard shield 2 and the nut 11 to have had a segment distance simultaneously, insert the effect that pulls handle thereby screw 1 is played.In the bottom of nut 11 chamfering 14 is arranged.Fig. 2 C end view that to be nut 11 link to each other by screw rod 121 with annular groove.

Here, the quantity that we select gathering sill is four roads, can decide on concrete situation in concrete application.Wherein Fig. 3 A is the bottom view of guard shield, and Fig. 3 B is the sectional view of guard shield, and Fig. 3 C is the end view of guard shield.

Preferably, annular knurl 15 is arranged at the periphery of nut, insert draw guard shield in, play the effect that increases friction, help plug.In the bottom of guard shield 2 positioning convex 24 is arranged, in assembling, can carry out the location of guard shield very easily.

In the process of assembling, screw 1 passes guard shield 2 by through hole 21, the angled protrusions of circular column 22 bottoms on the guard shield 2 is stuck in the annular groove place on the screw rod, in screw loosening, will block screw, thereby prevent coming off of screw, simultaneously, guard shield can be fixed by nut 11, as shown in Figure 4, Fig. 5 is the end view after screw and the guard shield assembling.

In the application of reality, as shown in Figure 6, screw and guard shield link together, and screw is with guard shield being fixed on the protected object tightly.When safeguarding, the staff can take out guard shield by nut easily, and screw and guard shield can not break away from yet simultaneously, thereby can prevent coming off of screw, has played useful effect in the middle of using.

In the application of reality, the shape of nut, the shape of guard shield and the shape of annular groove can according to circumstances be decided.Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of fixture comprises screw and guard shield, and screw is made up of nut and screw rod, and guard shield comprises guard shield end face (25) and guard shield side (26), and through hole (21) is arranged on the guard shield end face (25), and described screw is connected with guard shield by through hole (21), it is characterized in that,

Annular groove (13) is arranged on the screw rod;

At the guard shield end face, along described through hole, be extended with circular column (22) to the direction identical with the guard shield side, circular column (22) inner surface angled protrusions in through hole (21), at least one gathering sill (23) distributes on circular column;

Guard shield blocks annular groove (13) on the screw by circular column (22).

2, a kind of fixture as claimed in claim 1 is characterized in that, described nut can directly link to each other with annular groove (13), also can pass through screw rod (121) and link to each other with nut.

3, a kind of fixture as claimed in claim 1 or 2 is characterized in that, the periphery of nut has annular knurl (15).

4, a kind of fixture as claimed in claim 1 is characterized in that, positioning convex (24) is arranged at described guard shield bottom.

5, a kind of fixture as claimed in claim 1 is characterized in that, described circular column (22) is gone up uniform four road gathering sills.

6, a kind of fixture as claimed in claim 1 is characterized in that, described annular groove (13), the shape broken line type on its annular groove inclined-plane (131) or linear pattern or arc line type.