CN214837738U

CN214837738U - Bolt device without loosening

Info

Publication number: CN214837738U
Application number: CN202120629439.6U
Authority: CN
Inventors: 徐敬涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-23
Anticipated expiration: 2031-03-29

Abstract

The utility model provides a bolt device does not become flexible, including step screw thread screw rod and hexagonal head, step screw thread screw rod with hexagonal head fixed connection, step screw thread screw rod includes fastening section, forward screw thread section and reverse screw thread section, be equipped with the packing ring in the forward screw thread section, forward screw thread section passes through threaded connection with the forward nut, reverse screw thread section passes through threaded connection with reverse flange formula nut. The technical scheme of the utility model is that a forward rotation resistance is generated by arranging the forward thread section and the forward nut, a reverse spiral resistance is generated by arranging the reverse thread section and the reverse flange nut, the forward spiral resistance and the reverse spiral resistance are mutually restricted on the same bolt axis to resist sliding together, and the anti-loosening effect of the bolt assembly is realized; the diameter of the diameter ratio through setting up reverse screw tooth section is little than the diameter of forward screw tooth section, makes things convenient for the installation and the dismantlement of forward nut, realizes that bolt assembly installs and dismantles conveniently, satisfies the use of different use occasions.

Description

Bolt device without loosening

Technical Field

The utility model belongs to the technical field of the fastener technique and specifically relates to a bolt device does not become flexible.

Background

At present, bolts are widely applied to various industries, the bolts have the problem of loosening in use, and potential safety hazards and immeasurable loss can be caused after the bolts are loosened. The existing non-loosening bolt technology mainly adopts a technical proposal of doing skill on a nut and a washer, including a cotter pin on the bolt and the like, the structure is too complex, the production and manufacturing difficulty is high, the cost is higher, the non-loosening can not be realized in the true sense, and the bolt is inconvenient to disassemble once being installed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a not hard up bolt device, the not loose effect of back can be realized installing to the not hard up bolt device, simple structure, convenient to use, economical and practical.

The utility model provides a bolt device does not become flexible, including step screw thread screw rod and hexagonal head, step screw thread screw rod with hexagonal head fixed connection, step screw thread screw rod is including fastening section, forward screw thread section and the reverse screw thread section that sets up in proper order in succession, be equipped with the packing ring in the forward screw thread section, the forward screw thread section passes through threaded connection with the forward nut, reverse screw thread section passes through threaded connection with reverse flange formula nut, keep away from on the forward nut one side of six square heads is equipped with forward non return tooth, be close to on the reverse flange formula nut one side of six square heads is equipped with reverse non return tooth.

Further, a flexible combination pad is arranged between the forward nut and the reverse flange nut. Further, the flexible bonding pad is made of soft lead, and both an outer diameter and an inner diameter of the flexible bonding pad are the same as the positive nut.

Further, the gasket is a spring washer.

Further, the length of the positive thread section is 1.2 times of the thickness of the positive nut.

Further, the length of the reverse thread section is 1.5 times of the thickness of the reverse flange nut.

Further, the thickness of the flexible bonding pad is 0.4 times the thickness of the positive nut.

Further, the diameter of the reverse thread section is smaller than the diameter of the forward thread section.

The technical scheme of the utility model is that a forward rotation resistance is generated by arranging the forward thread section and the forward nut, a reverse spiral resistance is generated by arranging the reverse thread section and the reverse flange nut, the forward spiral resistance and the reverse spiral resistance are mutually restricted on the same bolt axis to resist sliding together, and the anti-loosening effect of the bolt assembly is realized; the diameter of the reverse thread section is smaller than that of the forward thread section, so that the forward nut is convenient to mount and dismount, and the bolt assembly is convenient to mount and dismount; the fastening sections with different lengths are arranged, so that the use requirements of different use occasions are met.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 view of the overall structure of the present invention;

FIG. 2 is a schematic view of the positive non-return tooth structure of the present invention;

FIG. 3 is a schematic view of the reverse non-return tooth structure of the present invention;

description of reference numerals: 1-hexagonal head, 2-fastening section, 3-forward thread section, 4-reverse thread section, 5-washer, 6-forward nut, 7-flexible combination pad, 8-reverse flange nut, 9-forward non-return tooth and 10-reverse non-return tooth;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1-3:

a bolt device without loosening comprises a step screw thread screw and a hexagonal head 1, wherein the step screw thread screw is fixedly connected with the hexagonal head 1 and comprises a fastening section 2, a forward screw thread section 3 and a reverse screw thread section 4. The step thread screw is made by processing two threads on the existing screw, the first thread is a forward thread section 3 (the length is 1.2a, a is the thickness of a forward nut 6), the second thread is a reverse thread section 4 (the length is 1.5b, b is the thickness of a reverse flange nut 8), the diameter of the second thread is 4mm smaller than that of the first thread, and the installation of the forward nut 6 on the first thread is facilitated. The smooth surface area of the screw is a fastening section 2 used for installation, and the length of the fastening section 2 is determined according to the actual needs of a user.

Be equipped with packing ring 5 on the positive thread section 3, packing ring 5 is the spring pad, and the spring pad is prior art, and the effect of spring pad is the not hard up that prevents that the bolt from arousing because of the vibrations of machine or expend with heat and contract with cold.

The forward thread section 3 is connected with the forward nut 6 through threads, and the reverse thread section 4 is connected with the reverse flange nut 8 through threads. One side of the positive nut 6 far away from the hexagonal head 1 is provided with positive non-return teeth. And a reverse non-return tooth 10 is arranged on one side of the reverse flange type nut 8 close to the hexagonal head 1. A flexible combination pad 7 is arranged between the forward nut 6 and the reverse flange nut 8, the flexible combination pad 7 is made of soft lead, and the outer diameter and the inner diameter of the flexible combination pad 7 are the same as those of the forward nut 6. The flexible bonding pad 7 is an important member for bonding the forward nut 6 and the reverse nut, and has a thickness of 0.4a (a is the thickness of the forward nut 6). The reverse flange type nut 8 is manufactured by processing a reverse screw opening on the basis of the production of the existing flange type nut and processing reverse non-return teeth 10 on the flange surface.

The length of the forward thread section 3 is 1.2 times of the thickness of the forward nut 6, the length of the reverse thread section 4 is 1.5 times of the thickness of the reverse flange nut 8, and the thickness of the flexible combination pad 7 is 0.4 times of the thickness of the forward nut 6. The length is designed to ensure the convenience of installation and the fixing effect.

The positive non-return teeth 9 are a group of bulges uniformly arranged in the clockwise rotation direction, and the negative non-return teeth 10 are a group of bulges uniformly arranged in the anticlockwise rotation direction.

The working principle is as follows:

the installation process comprises the following steps:

the step thread screw is installed on a using part, then the gasket 5 and the forward nut 6 are sleeved on the step thread screw, and then the forward nut 6 is screwed, so that the fastening degree needs to reach the required value of a user. Then the flexible combination pad 7 is arranged, finally the reverse flange type nut 8 is screwed, and the tightness is required to ensure that the flexible combination pad 7 clamped between the two nuts in the forward direction and the reverse direction is mutually meshed with the non-return teeth.

The disassembling process comprises the following steps:

the dismounting process is opposite to the mounting process, the reverse flange type nut 8 is firstly unscrewed, and due to the obstruction of the non-return teeth on the flexible combination pad 7, the flexible combination pad 7 is damaged after being dismounted with strong force, the flexible combination pad 7 is used for one time, the damaged flexible combination pad 7 is taken down, the forward nut 6 is dismounted, and the step screw thread screw is extracted.

The technical scheme of the utility model is that a forward rotation resistance is generated by arranging the forward thread section 3 and the forward nut 6, a reverse spiral resistance is generated by arranging the reverse thread section 4 and the reverse flange nut 8, the forward spiral resistance and the reverse spiral resistance on the same bolt axis are mutually constrained and jointly resist sliding, and the anti-loosening effect of the bolt assembly is realized; the diameter of the reverse thread section 4 is smaller than that of the forward thread section 3, so that the forward nut 6 is convenient to mount and dismount, and the bolt assembly is convenient to mount and dismount; the fastening sections 2 with different lengths are arranged, so that the use requirements of different use occasions are met.

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 the same; 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 or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a bolt device does not become flexible, its characterized in that, includes step screw thread screw rod and hexagonal head, step screw thread screw rod with hexagonal head fixed connection, step screw thread screw rod is including fastening section, forward screw thread section and the reverse screw thread section that sets up in proper order in succession, be equipped with the packing ring on the forward screw thread section, forward screw thread section passes through threaded connection with forward nut, reverse screw thread section passes through threaded connection with reverse flange formula nut, keep away from on the forward nut one side of six square heads is equipped with forward non return tooth, be close to on the reverse flange formula nut one side of six square heads is equipped with reverse non return tooth.

2. A loose bolt device according to claim 1, wherein a flexible bonding pad is provided between the forward nut and the reverse flange nut.

3. A locking bolt assembly as defined in claim 2, wherein said flexible bonding pad is made of soft lead, and both the outer diameter and the inner diameter of said flexible bonding pad are the same as said positive nut.

4. A loose bolt device as claimed in claim 1, wherein the washer is a spring washer.

5. A loose bolt device according to claim 1, wherein the length of the positive thread section is 1.2 times the thickness of the positive nut.

6. A loose bolt device according to claim 1, wherein the length of the reverse thread section is 1.5 times the thickness of the reverse flange nut.

7. A loose bolt device according to claim 2, wherein the thickness of the flexible bonding pad is 0.4 times the thickness of the positive nut.

8. A loose bolt device according to claim 1, wherein the reverse thread section has a diameter smaller than the diameter of the forward thread section.