CN201043648Y - Anti-loosing structure for screwing male and female screw - Google Patents

Abstract

The utility model relates to a public, female screw spare spiral shell closes locking structure that takes off, including a female screw spare and public screw spare, female screw spare one end has the opening, and nearly open-ended medial surface is equipped with female screw thread, and public screw spare is equipped with the opening correspondence that a correspondence end and female screw spare, and nearly the lateral surface of correspondence end be equipped with a public screw thread, a breach is established in the screw thread route of public screw thread. The notch can correspond to a release-preventing key of the female screw piece, and the release-preventing key is allowed to penetrate through the clamping hole and then inserted into the notch; by means of the filling and blocking of the notch, the spiral path of the male screw piece and the male thread is blocked, and the tight sealing effect that the male screw piece and the female screw piece cannot be disengaged is achieved.

Description

Anti-loosening structure of male and female nuts

technical field

The utility model relates to a structure of male and female screws, in particular to a structure for preventing loosening of male and female screws.

Background technique

Many tubular or tubular containers in daily life must be combined by means of male and female screws, such as portable kettles, drinking water filters, etc.; even industrial transmission of gas, liquid and other fluids The pipeline, due to the characteristics of frequent opening and closing. All need to be combined by virtue of a male thread at one end and a female thread at one end. However, since there are fluids such as liquid and gas in the container or the pipeline, under pressure, the fluid may leak through the clearance (especially the joint between the male and female threads). Therefore, the male and female threads must pass through the sealing gasket and be strongly locked to achieve locking.

However, often due to the internal flow and disturbance of the fluid, or the impact of external vibrations, the corresponding relationship between the male and female threads will gradually loosen or even break away. In addition to causing waste of internal fluid leakage, it may even cause danger. However, the existing gaskets are mainly soft and circumferentially wound or sheathed components, so they still cannot avoid loosening or even detachment under relatively strong vibration conditions.

Contents of the invention

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a screw-in anti-loosening structure of male and female nuts to prevent the screws from loosening.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A threaded anti-loosening structure for male and female screws, comprising: a female screw with an opening at one end and a female thread on the inner surface near the opening; a male screw with a corresponding end and the female screw Corresponding to the opening of the piece, and a male thread is provided on the outer surface near the corresponding end; it is characterized in that: the body of the female nut is pierced with a locking hole, and a locking hole is set in the locking hole. Blocking key; the male screw is provided with a gap in the thread path of the male thread, and the gap corresponds to the blocking key of the female screw, and allows the blocking key to penetrate through the locking hole and insert into the gap .

In the utility model, the inner side of the locking hole of the female screw thread can be set as a neck section narrowed in the locking hole, and the neck section forms a track for the pin piece of the blocking key to move up and down, and the blocking The dekeying includes a toggle piece, and a pin piece is extended inside the toggle piece. The end of the pin piece is a wider valve part, and the width of the valve part is larger than the neck section, and the elasticity of the material is used. Make it pass through the neck section, so that the valve part can be against the gap of the male screw, and the neck section also forms the resistance and resistance of the valve part.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the advantage that the helical path of the male screw and the male thread is blocked by virtue of the formation of the plugging of the gap, so as to achieve the The tight sealing effect that the parts cannot be disengaged.

Description of drawings

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a three-dimensional exploded view of the utility model;

Fig. 3 is a schematic view of Fig. 1A-A sectional view;

Fig. 4 is the second diagram of Fig. 2A-A sectional action diagram;

Fig. 5 is a sectional view of Fig. 1B-B.

Explanation of reference signs: 1-female screw; 11-opening; 12-female thread; 13-catch hole; 14-blocking key; 2-male screw; 21-corresponding end; 22-male thread; 23- Gap; 131-neck section; 141-moving piece; 142-pin piece; 143-valve part.

Detailed ways

The following is a preferred embodiment based on the aforementioned content, and illustrates the structure, features and embodiments of the utility model with the help of drawings, so as to provide your examiner with a further understanding of this case.

Please refer to Fig. 1, as shown in Fig. 2, the utility model relates to a screw-in anti-loosening structure of male and female nuts, including:

A female nut 1 : the female nut 1 has an opening 11 at one end, and a female thread 12 is provided on the inner surface close to the opening 11 . A locking hole 13 is formed in the body of the female nut 1 . And the locking hole 13 is correspondingly provided with a blocking key 14 .

A male screw 2 : the male screw 2 has a corresponding end 21 corresponding to the opening 11 of the female screw 1 , and a male thread 22 is provided on the outer surface near the corresponding end 21 .

The male screw 2 is provided with a notch 23 on the thread path of the male thread 22 . The notch 23 can correspond to the blocking key 14 of the female screw 1 , and allows the blocking key 14 to pass through the locking hole 13 and then be inserted into the notch 23 .

By virtue of the blocking key 14 radially inserted into the notch 23 from the locking hole 13, the notch 23 can be blocked, and the helical path of the male screw 2 and the male thread 22 can be blocked, thereby achieving male and female The tight sealing effect that the screw parts 2 and 1 cannot be disengaged.

Please refer to Fig. 3 and Fig. 4 for the action diagrams, the specific embodiment of the present invention sets the inner side of the locking hole 13 of the female thread 12 as a neck section 131 narrower than the locking hole 13, the neck The segment 131 forms a track for the upward and downward movement of the blocking key 14, and the blocking key 14 includes a toggle piece 141, and a pin piece 142 extends inside the toggle piece 141, as shown in FIG. The end of the above-mentioned pin piece 142 is a wider valve portion 143, and the width of the valve portion 143 is larger than the neck section 131, and the elasticity of the material is used to make it stretch the neck section 131, so that the valve portion 143 can Butt against the notch 23 of the male screw 2 , and at the same time, the neck section 131 also forms resistance and blocking of the valve portion 143 .

The pin piece 142 is driven by the driving piece 141 , and the valve part 143 is driven to move up and down, that is, to disengage from and return to the notch 23 of the male screw 2 in the axial direction. That is, the state of whether the blocking key 14 is locked or not can be changed by virtue of the strumming state. The utility model utilizes the activity selection to determine whether to block the helical path of the male screw 2 and the male thread 22 by means of the blocking key 14 for the filling of the gap 23, so as to achieve the male and female screw 2, 1 Tight sealing effect that cannot be disengaged.

Therefore, by means of the design of the present invention, it is possible to reduce or avoid fluid leakage due to loosening of the screw connection when fluids such as liquid and gas are in a pressure state in the container or pipeline. Therefore, the utility model has safety insurance effect.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the limitable scope of the claims of the present utility model.

Claims (2)

1. A threaded anti-loosening structure for male and female nuts, comprising: A female screw, one end has an opening, and the inner surface near the opening is provided with a female thread; A male screw, which is provided with a corresponding end corresponding to the opening of the female screw, and a male thread is provided on the outer surface near the corresponding end; it is characterized in that: A locking hole is pierced through the body of the female nut, and a blocking key is set in the locking hole; The male screw is provided with a notch on the thread path of the male thread, and the notch corresponds to the blocking key of the female screw, and allows the blocking key to pass through the locking hole and then be inserted into the notch. 2. The threaded anti-loosening structure of male and female nuts according to claim 1, characterized in that: the inner side of the locking hole of the female thread is set as a neck section narrower than the locking hole, and the neck The section forms a track for the block key to move up and down, and the block key includes a toggle piece, a pin piece extends inside the toggle piece, and the end of the pin piece is a piece with a width larger than the neck section. The valve part, the valve part is pierced and stretched in the neck section.

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