CN214888275U

CN214888275U - Anti-loosening locking structure

Info

Publication number: CN214888275U
Application number: CN202121596319.7U
Authority: CN
Inventors: 范广森; 陈琳; 刘加佳; 康建强
Original assignee: Nanjing Sanfang Chemical Equipment Supervision Co ltd
Current assignee: Nanjing Sanfang Chemical Equipment Supervision Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-11-26
Anticipated expiration: 2031-07-14

Abstract

The utility model provides a locking and stopping structure relating to the field of screws, which comprises an upper stopping part, a lower stopping part and a stopping inner core; a lower stop thread is arranged on the outer cylindrical surface of the lower stop part; an upper stop thread is arranged on the outer cylindrical surface of the upper stop part, and the rotating direction of the lower stop thread is opposite to that of the upper stop thread; a step-shaped counter bore is arranged in the lower stopping part and comprises a first prismatic core hole which is communicated with the upper surface of the lower stopping part and a cylindrical accommodating hole which is communicated with the first core hole; a second prismatic core hole is arranged in the upper stop part; the locking inner core is provided with a lower core body and an upper core body which are respectively matched with the first core hole and the second core hole, the upper core body and the lower core body are of an integrated structure, and a spring is arranged at the lower end of the lower core body. The utility model discloses simple structure, upper and lower locking part revolve to on the contrary, accomplish the back in the installation, no matter the external world applys forward or reverse power of twisting soon, all can't make upper and lower locking part separate, realize locking, and locking is effectual.

Description

Anti-loosening locking structure

Technical Field

The utility model belongs to the technical field of the screw and specifically relates to a locking detent structure.

Background

Some threaded components are installed and, in order to prevent loosening during use, are tapped by drilling small holes in the boundary, the locking screw is screwed in, and the outlet edge is punched to prevent the locking screw from withdrawing. However, sometimes, the heights of the two sides of the boundary of the driving part of the locking screw are different, so that the punching effect of the sample is very poor, the sample punching is performed by hands of workers, and when the number of the sample punching is large, the deformation of some sample punching is not enough to fix the locking screw.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a locking detent to solve the current poor problem of locking screw locking effect.

The utility model discloses a realize like this: a locking stop structure comprises an upper stop part, a lower stop part and a stop inner core;

the lower stopping part is in a screw shape, and a lower stopping thread is arranged on the outer cylindrical surface of the lower stopping part;

the upper stop part is cylindrical, an upper stop thread is arranged on the outer cylindrical surface of the lower stop part, and the rotating direction of the lower stop thread is opposite to that of the upper stop thread;

a stepped counter bore is arranged in the lower stopping part and comprises a first prismatic core hole which is communicated with the upper surface of the lower stopping part and a cylindrical accommodating hole which is communicated with the first core hole; a second prismatic core hole is provided in the upper stopper portion; the locking inner core is provided with a lower core body and an upper core body which are respectively matched with the first core hole and the second core hole, the upper core body and the lower core body are of an integrated structure, and a spring is arranged at the lower end of the lower core body.

Preferably, the first core hole and the second core hole are each quadrangular prism-shaped.

Preferably, the cross-sectional area of the second core hole is smaller than the cross-sectional area of the first core hole.

Preferably, the diameter of the lower stopper is smaller than the diameter of the upper stopper.

Preferably, the diameter of the spring is smaller than the inner diameter of the receiving hole.

Preferably, the upper stopper is provided with an operation hole along an axis thereof, the operation hole penetrating through the second core hole and an upper surface of the upper stopper, respectively, and a diameter of the operation hole is smaller than a diameter of the second core hole.

Adopt above-mentioned technical scheme, the utility model discloses simple structure, upper and lower locking part revolve to on the contrary, accomplish the back in the installation, no matter the external positive or reverse power of twisting soon of applying, all can't make upper and lower locking part separation, realize locking, lock effectually.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the lower stopper of the present invention;

FIG. 3 is a schematic top view of FIG. 2;

fig. 4 is a schematic structural view of the upper stop portion of the present invention;

FIG. 5 is a schematic top view of FIG. 4;

fig. 6 is a schematic structural view of the locking core of the present invention;

fig. 7 is a schematic top view of fig. 6.

In the figure: 1-upper stop part, 2-lower stop part, 3-stop inner core, 31-lower core, 32-upper core, 4-first core hole, 5-containing hole, 6-second core hole, 7-spring, 8-operating hole.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-7, the present invention provides an anti-loose locking structure, which comprises an upper locking portion 1, a lower locking portion 2 and a locking inner core 3. Wherein, the lower stop part 2 is in a screw shape, and a lower stop thread is arranged on the outer cylindrical surface of the lower stop part 2. The upper stopping part 1 is cylindrical, an upper stopping thread is arranged on the outer cylindrical surface of the upper stopping part 1, and the rotating directions of the lower stopping thread and the upper stopping thread are opposite.

Further, a stepped counter bore is provided in the lower stopper 2, and includes a first core hole 4 having a prism shape penetrating through an upper surface of the lower stopper 2 and a cylindrical accommodation hole 5 penetrating through the first core hole 4. A second prismatic core hole 6 is provided in the upper stopper portion 1. The stopper inner core 3 has a lower core body 31 and an upper core body 32 respectively matched with the first core hole 4 and the second core hole 5, the upper core body 32 and the lower core body 31 are of an integrated structure, and a spring 7 is arranged at the lower end of the lower core body 31. When mounted, the upper core 32 is inserted into the second core hole 5, and the lower core 31 is inserted into the first core hole 4. Since the first core hole 4 and the second core hole 6 are both in a prism structure, the upper and lower cores cannot rotate in the core holes after being inserted. Preferably, the first core hole 4 and the second core hole 6 are each quadrangular.

Further, the cross-sectional area of the second core hole 6 is smaller than that of the first core hole 4.

Further, the diameter of the lower stopper 2 is smaller than that of the upper stopper 1. The diameter of the spring 7 is smaller than the inner diameter of the receiving hole 5, the spring 7 can be placed in the receiving hole 5, and the length of the spring 7 in a relaxed state is larger than the height of the receiving hole 5.

Further, an operation hole 8 penetrating the second core hole 6 and the upper surface of the upper stopper 1 is provided in the upper stopper 1 along the axis thereof, and the diameter of the operation hole 8 is smaller than the diameter of the second core hole 6. By operating the hole 8, the stopper core at the lower portion thereof can be pressed downward with a tool, facilitating the screwing of the upper stopper 1.

The utility model discloses a use method is:

1. pressing the outer diameter and the threads of the stop part to form a stop screw hole and tapping;

2. punching a stop screw hole on the upper section of the large stop screw hole in the step I according to the outer diameter of the upper stop part and tapping;

3. screwing in the lower stop part;

4. a spring and a stop inner core are arranged;

5. screwing the upper stopping part, and using a tool (a steel column or other slender objects) to penetrate through the operation hole to press the stopping inner core and the spring downwards so that the upper stopping part is smoothly screwed;

6. the tool is loosened and adjusted to enable the upper core body to penetrate into the second core hole, and the locking is achieved.

The utility model discloses simple structure, upper and lower locking part revolve to on the contrary, accomplish the back in the installation, no matter the external world applys forward or reverse power of twisting soon, all can't make upper and lower locking part separate, realize locking, and locking is effectual.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A locking stop structure is characterized by comprising an upper stop part, a lower stop part and a stop inner core;

the upper stop part is cylindrical, an upper stop thread is arranged on the outer cylindrical surface of the upper stop part, and the rotating direction of the lower stop thread is opposite to that of the upper stop thread;

2. The locking stop structure of claim 1 wherein said first core hole and said second core hole are each square-prism shaped.

3. The locking stop structure of claim 1 wherein the cross-sectional area of said second core hole is smaller than the cross-sectional area of said first core hole.

4. The locking stop arrangement of claim 1 wherein said lower stop portion has a diameter less than a diameter of said upper stop portion.

5. The locking stop arrangement of claim 1 wherein the diameter of said spring is less than the inner diameter of said receiving bore.

6. The locking structure of claim 1, wherein said upper stopper portion is provided along an axis thereof with an operation hole penetrating through the upper surfaces of said second core hole and said upper stopper portion, respectively, the diameter of said operation hole being smaller than the diameter of said second core hole.