CN210769791U

CN210769791U - Anti-dismantling nut

Info

Publication number: CN210769791U
Application number: CN201920975037.4U
Authority: CN
Inventors: 张文锋
Original assignee: Shenzhen Yuanda Smart Electronic Technology Co Ltd
Current assignee: Shenzhen Yuanda Smart Electronic Technology Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-06-16
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to the technical field of fasteners, in particular to an anti-disassembly nut, which comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is arranged at the inner side of the outer sleeve, the inner cavity wall of the inner sleeve is provided with internal threads, and the lower end of the inner sleeve is provided with a wrench acting point with plum blossom lines; the lower end of the outer sleeve is provided with an inward-contracting protruding portion, a strip-shaped opening is formed in the protruding portion, and the upper ends of the inner sleeve and the outer sleeve are further provided with annular bottom sealing covers in a matched mode. The utility model discloses a structure cooperation setting of endotheca and overcoat to and the special construction setting of back cover lid, need purpose-made spanner just can dismantle, safe and reliable has very high popularization and application and worth.

Description

Anti-dismantling nut

Technical Field

The utility model relates to a fastener technical field specifically is an anti-disassembly nut.

Background

The nut is a nut, and is a part screwed together with a bolt or a screw rod to play a role in fastening, and all production and manufacturing machines are required to be used as one element, and the nut is divided into carbon steel, stainless steel, non-ferrous metal (such as copper) and other types according to different materials.

At present, the traditional nut is made of hexagonal/octagonal copper/alloy, and only one wrench is needed, so that the nut is convenient to install and disassemble. However, some water meters and gas meters are installed in places, special nuts are required, and disassembly and assembly can be prevented from being carried out by using tools on the market on the premise that disassembly and assembly are convenient. Therefore, in view of the above situation, there is a need to develop a tamper nut to overcome the shortcomings of the current practical application.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an anti-disassembly nut to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

an anti-disassembly nut comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is arranged on the inner side of the outer sleeve, an internal thread is arranged on the inner cavity wall of the inner sleeve, and a wrench acting point with plum blossom grains is arranged at the lower end of the inner sleeve; the lower end of the outer sleeve is provided with an inward-contracting protruding portion, a strip-shaped opening is formed in the protruding portion, and the upper ends of the inner sleeve and the outer sleeve are further provided with annular bottom sealing covers in a matched mode.

As a further aspect of the present invention: the inner sleeve is integrally of a cylindrical structure, an annular flange is integrally formed on the outer side of the lower end of the inner sleeve, and the section of the annular flange is in a right-angled trapezoid shape.

As a further aspect of the present invention: the outer sleeve is of a cylindrical barrel structure with openings at two ends, and a strip-shaped opening with the length smaller than the inner diameter of the annular flange is arranged on the protruding portion.

As a further aspect of the present invention: the bottom sealing cover comprises an outer ring which is used for being ultrasonically welded with the outer sleeve and integrally sealed.

As a further aspect of the present invention: the bottom sealing cover also comprises an inner circular ring for supporting the inner sleeve.

Compared with the prior art, the utility model discloses the beneficial effect of embodiment is:

the anti-dismantling nut is arranged by matching the structures of the inner sleeve and the outer sleeve and arranging the special structure of the bottom sealing cover, can be dismantled by a special wrench, is safe and reliable, and has high popularization and application values.

Drawings

Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the overall structure of the embodiment of the present invention.

In the figure: 10-inner sleeve, 101-inner thread, 102-spanner force application point, 103-annular flange, 20-outer sleeve, 201-protrusion, 2011-strip-shaped opening, 30-bottom sealing cover, 301-outer ring and 302-inner ring.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, a tamper nut includes an inner sleeve 10 and an outer sleeve 20, the inner sleeve 10 is disposed inside the outer sleeve 20, and an annular bottom sealing cover 30 is further disposed at upper ends of the inner sleeve 10 and the outer sleeve 20.

An inner thread 101 is formed on the inner cavity wall of the inner sleeve 10, and a wrench force application point 102 with a plum blossom pattern is arranged at the lower end of the inner sleeve 10; the inner sleeve 10 is integrally of a cylindrical structure, an annular flange 103 is integrally formed on the outer side of the lower end of the inner sleeve 10, and the section of the annular flange 103 is in a right-angled trapezoid shape.

The outer sleeve 20 is a cylindrical barrel structure with two open ends, the lower end of the outer sleeve 20 is provided with an inward-contracting protruding portion 201, and a strip-shaped opening 2011 with the length smaller than the inner diameter of the annular flange 103 is arranged on the protruding portion 201.

This prevent tearing open nut and the nut on the market is different place lies in: the inner sleeve 10 and the outer sleeve 20 are arranged; the inner sleeve 10 is provided with internal threads 101 for fastening a water meter and a gas meter, and the outer sleeve 20 is used for rotating, so that external force cannot be transmitted to the inner sleeve 10, and the anti-dismantling function is achieved; the force application point 102 of the hexagonal or octagonal wrench of the inner sleeve 10 is moved to the lower end (as shown in fig. 1), and is changed into a special quincunx pattern, and a corresponding wrench is manufactured according to the pattern, so that the wrench can be prevented from being disassembled by using a tool on the market.

The inner sleeve 10 is changed into a cylinder at the hexagonal or octagonal position of the traditional nut, and the lower end is provided with a slope (namely the annular flange 103), so that the inner sleeve can play a supporting role, the contact surface with the outer sleeve 20 can be reduced as much as possible, the friction can be further reduced, and if glue is used, the sticking surface can be reduced. Moreover, the inner sleeve 10 has a certain inclination such that the outer diameter of the lower end thereof is greater than that of the cylindrical body thereof.

The outer sleeve 20 is a cylinder, the inner diameter of which is determined according to the gradient part of the inner sleeve 10, but the round at the lower end of the outer sleeve 20 is retracted inwards to form a round opening with the inner diameter smaller than the gradient, and the opening is elongated to form a strip-shaped opening 2011, so that the purpose-made grains at the lower end of the inner sleeve 10 are protected. At this time, the nipper pliers cannot be inserted into the inner sleeve 10 and the outer sleeve 20, so that the lower ends of the inner sleeve and the outer sleeve are in a vertical structure.

The special spanner needs to adopt the completely consistent lines on the inner sleeve 10 and to make an ear shape according to the length of the inner sleeve 20 which is contracted and extended, and the connection of the bolt, the water pipe and the air pipe cannot be influenced.

Example 2

Referring to fig. 1, the difference between the present embodiment and embodiment 1 is:

in this embodiment, the bottom sealing cover 30 includes an outer ring 301 for ultrasonic welding and integral sealing with the outer sleeve 20, and the bottom sealing cover 30 further includes an inner ring 302 for supporting the inner sleeve 10.

The inner ring 302 provided on the back cover 30 functions to support the inner case 10, and the outer ring 301 functions to ultrasonically weld with the outer case 20 and seal the entire nut.

The anti-dismantling nut is safe and reliable and has high popularization and application values because the inner sleeve 10 and the outer sleeve 20 are matched and the bottom sealing cover 30 is arranged in a special structure and can be dismantled by a special spanner.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. An anti-dismantling nut comprises an inner sleeve (10) and an outer sleeve (20), and is characterized in that the inner sleeve (10) is arranged on the inner side of the outer sleeve (20), an internal thread (101) is formed on the inner cavity wall of the inner sleeve (10), and a wrench force application point (102) with plum blossom grains is arranged at the lower end of the inner sleeve (10); the lower extreme of overcoat (20) is provided with protruding portion (201) of internal contraction, is provided with a bar mouth (2011) on protruding portion (201), the upper end of endotheca (10) and overcoat (20) still cooperates and is provided with cyclic annular back cover lid (30).

2. The tamper nut as claimed in claim 1, wherein the inner sleeve (10) has a cylindrical structure as a whole, an annular flange (103) is integrally formed on an outer side of a lower end of the inner sleeve (10), and a cross section of the annular flange (103) has a right trapezoid shape.

3. The tamper nut as claimed in claim 2, characterized in that the outer sleeve (20) is of a cylindrical tubular configuration with openings at both ends, and the protruding portion (201) is provided with a strip-shaped mouth (2011) having a length smaller than the inner diameter of the annular flange (103).

4. The tamper nut as claimed in any one of claims 1 to 3, wherein the back cover (30) comprises an outer ring (301) for ultrasonic welding and integral sealing with the outer casing (20).

5. The tamper nut as claimed in claim 4, wherein the back cover (30) further comprises an inner ring (302) for supporting the inner sleeve (10).