CN105387051B - A kind of nut - Google Patents

A kind of nut Download PDF

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Publication number
CN105387051B
CN105387051B CN201510939802.3A CN201510939802A CN105387051B CN 105387051 B CN105387051 B CN 105387051B CN 201510939802 A CN201510939802 A CN 201510939802A CN 105387051 B CN105387051 B CN 105387051B
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CN
China
Prior art keywords
nut
nut body
back segment
section
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510939802.3A
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Chinese (zh)
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CN105387051A (en
Inventor
陶二虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Taino Fulun Machinery Co Ltd
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Qingdao Taino Fulun Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Qingdao Taino Fulun Machinery Co Ltd filed Critical Qingdao Taino Fulun Machinery Co Ltd
Priority to CN201510939802.3A priority Critical patent/CN105387051B/en
Publication of CN105387051A publication Critical patent/CN105387051A/en
Application granted granted Critical
Publication of CN105387051B publication Critical patent/CN105387051B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B41/00Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005Measures against unauthorised operation of bolts, nuts or pins

Abstract

The invention discloses a kind of nut, it includes nut body and nut, and nut body is constituted by forward and backward two sections, and internal thread is provided with leading portion nut body;The limiting section for being used for stopping nut is provided with the end of leading portion nut body, the diameter of the limiting section is more than the external diameter of back segment nut body;It is to be threadedly coupled provided with the external screw thread matched with the internal thread of the nut on back segment nut body, between nut and back segment nut body.When pipeline is connected, it is fastened on a spanner on bolt and remains stationary state, nut is turned with another spanner forward direction, when the front end of nut is pressed on limiting section, torsion is continued to, now nut can drive nut body integral-rotation to be finished until with bolt fastening;When occurring to dismantle by mistake, effectively nut body can be prevented to be opened with bolt.The present invention is simple in construction, easy to operate, and cost is relatively low.

Description

A kind of nut
Technical field
The present invention relates to a kind of nut.
Background technology
In pipeline connection, screw bolt and nut is often used as connector, embodiment is:By one section of company for the treatment of The pipeline connect is welded on bolt, and another section of pipeline to be connected is inserted into nut, is realized by turning screw bolt and nut The connection of two sections of pipelines.However, in some special dimensions, compressor field, automotive field etc., often being flowed in pipeline Refrigerant, high temperature hot gas or liquid etc..If machine is in normal operation or maintenance process, pipeline attaching nut and spiral shell Bolt is disassembled by mistake, can easily cause to be mixed into air or high temperature hot gas or liquid outflow in refrigerant pipeline, causing need not The potential safety hazard wanted.For these reasons, prior art gives a kind of nut for preventing from dismantling by mistake.
The nut mainly includes nut body and fastening cap, wherein, nut body is constituted by forward and backward two sections.In leading portion spiral shell Internal thread is set on maternal body, the fastening cap is nested with back segment nut body;Wherein, on the front end face circumference of fastening cap Provided with the consistent oblique tooth of several incline directions, correspondence oblique tooth inclines provided with several on the rear end face of leading portion nut body The consistent drift slot of tilted direction.Bolt is tubular design, and the external screw thread matched with above-mentioned internal thread is set on bolt.Existing skill The Anti-dismantling principle of nut and bolt is as follows in art:When pipeline is connected, it is fastened on a spanner on bolt and remains stationary State, fastening cap is turned with another spanner forward direction, because the oblique tooth on fastening cap is stuck in nut body leading portion rear end face , can be while driving one piece of rotation of nut body and being fastened with bolt formation when turning fastening cap in drift slot;Occurring to tear open by mistake When unloading, because the torsion that fastening nut is reversely rotated with separating needs between the rear end face of leading portion nut body is less than bolt and spiral shell The torsion needed during the separation of maternal body, so even being that fastening nut is removed and will not also drive nut body and bolt point From so as to effectively prevent disassembling section by mistake.But there are the following problems in actual applications for above-mentioned nut:(1) complicated, It is costly;(2) it is embedded in due to the front end face of fastening cap in the rear end face of leading portion nut body so that tear open in some cases The torsion needed when opening fastening cap with nut body is more than the torsion needed when taking nut body apart with bolt, is occurring to dismantle by mistake Shi Rongyi takes screw bolt and nut body apart, so as to not have the effect for preventing dismantling by mistake, this phenomenon makes in wet environment Used time is particularly evident.
The content of the invention
For above-mentioned technical problem present in prior art, the present invention proposes a kind of nut, and its is simple in construction, can Effectively prevent disassembling section by mistake.
To achieve these goals, the present invention is adopted the following technical scheme that:
A kind of nut, bag nut body, nut body is constituted by forward and backward two sections;Provided with interior on leading portion nut body Screw thread;The nut also includes nut;The limiting section for being used for stopping nut, the limiting section are provided with the end of leading portion nut body Diameter be more than back segment nut body external diameter;It is outer that the internal thread being provided with back segment nut body with the nut matches Screw thread, is to be threadedly coupled between nut and back segment nut body.
Preferably, the back segment nut body includes smooth section and the thread segment set gradually from front to back;In thread segment It is interior that the external screw thread is set.
Preferably, solution power packing ring is arranged with smooth section.
Preferably, the width of the smooth section is the 40%~60% of the nut width.
Preferably, the back segment nut body also includes spacing section, and this spacing section is located on rear side of the thread segment;Spacing Nut anti-dropout part is provided with section.
Preferably, the nut anti-dropout part be included in the stopper slot that is set on back segment nut body and with it is described spacing The spacing collar of groove adaptation, spacing collar is installed in the stopper slot.
The invention has the advantages that:
Nut in the present invention, including nut body and nut, nut body are constituted by forward and backward two sections, in leading portion nut Body is provided with internal thread;The limiting section for being used for stopping nut, the diameter of the limiting section are provided with the end of leading portion nut body More than the external diameter of back segment nut body;Provided with the external screw thread matched with the internal thread of the nut, spiral shell on back segment nut body It is to be threadedly coupled between cap and back segment nut body.Pass through said structure design so that tight with a spanner when pipeline is connected Gu on bolt and remains stationary state, nut is turned with another spanner forward direction, when the front end of nut be pressed on it is spacing When in portion, torsion is continued to, now nut can drive nut body integral-rotation to be finished until with bolt fastening;Dismantling by mistake When, it is less than what is needed when bolts and nuts body is separated because nut reversely rotates the torsion needed during with being separated between limiting section Torsion, so even being that nut is removed and will not also drive nut body to be separated with bolt, tears open by mistake so as to effectively prevent Unload operation.In addition, as a preferred technical solution of the present invention, back segment nut body includes the light set gradually from front to back Sliding section and thread segment;The external screw thread is set in thread segment.By above-mentioned design, it on the one hand can ensure to turn spiral shell in forward direction During cap, the front end of nut can still be pressed on limiting section and drive nut body integral-rotation to be fastened until with bolt Finish;On the other hand, due to the presence of back segment nut body Smooth section, reduce what is needed when being separated between nut and limiting section Torsion, so as to preferably play a part of preventing dismantling by mistake.The present invention is simple in construction, easy to operate, and cost is relatively low.
Brief description of the drawings
Fig. 1 is a kind of structural representation of nut in the embodiment of the present invention 1, and nut is in assembled state in the figure;
Fig. 2 is a kind of structural representation of nut in the embodiment of the present invention 1, and nut is in decomposing state in the figure;
Fig. 3 is a kind of structural representation of nut in the embodiment of the present invention 2, and nut is in assembled state in the figure;
Fig. 4 is a kind of structural representation of nut in the embodiment of the present invention 2, and nut is in decomposing state in the figure;
Fig. 5 is a kind of structural representation of nut in the embodiment of the present invention 3, and nut is in assembled state in the figure;
Fig. 6 is a kind of structural representation of nut in the embodiment of the present invention 3, and nut is in decomposing state in the figure;
Wherein, 1- nuts, 2- leading portion nut bodies, 3- back segment nut bodies, 4- limiting sections, 5- internal threads, 6- external screw threads, 7- smooth sections, 8- thread segments, 9- solution power packing rings, spacing section of 10-, 11- stopper slots, 12- spacing collars.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the present invention:
Embodiment 1
With reference to shown in Fig. 1 and Fig. 2, a kind of nut, including nut body and nut 1.Nut body is by forward and backward two sections of groups Into, wherein, leading portion nut body numeral 2 is represented, back segment nut body numeral 3 is represented.
Internal thread is set on leading portion nut body 2, is used for and bolt connection.
Limiting section 4 is provided with the end of leading portion nut body 2, for stopping nut 1.It can be limited by the limiting section 4 Foremost position in the motion of nut 1.Specifically, the diameter of the limiting section 4 is more than the external diameter of back segment nut body 3.
External screw thread 6 is provided with back segment nut body 3.The external screw thread 6 matches with the internal thread 5 set on nut 1, spiral shell It is to be threadedly coupled between cap 1 and back segment nut body 3.
Nut 1 can be using the hexagonal (hexagon)nut for being easy to use cooperatively with spanner.
Nut structure in the present embodiment 1 is simple and convenient to operate, cost is relatively low, and can effectively prevent bolts and nuts Occur dismantling by mistake between body.
Embodiment 2
With reference to shown in Fig. 3 and Fig. 4, nut in the present embodiment 2 in addition to following technical characteristic and the difference of embodiment 1, its Remaining technical characteristic can refer to above-described embodiment 1.
Back segment nut body 3 includes smooth section 7 and the thread segment 8 set gradually from front to back.Wherein, smooth section 7 is nothing Thread segment, sets external screw thread 6 in thread segment 8.
The smooth section 7 is as Xie Liqu, and it is to reduce the torsion needed when being separated between nut 1 and limiting section 4 that it, which is acted on, from And effectively prevent occurring dismantling by mistake between bolts and nuts body.
Its substantially operation principle is:
When pipeline is connected, it is fastened on bolt and remains stationary state, is turned with another spanner forward direction with a spanner Nut 1, when the front end of nut 1 is pressed on limiting section 4, continues to torsion, and now nut 1 can drive nut body overall It is rotated up and is finished with bolt fastening.When occurring to dismantle by mistake, due to the presence of smooth section 7 so that in nut 1 and limiting section 4 Together with only the rear portion of internal thread 5 of nut 1 is screwed up with the external screw thread 6 on thread segment 8 during close contact, hence it is evident that reduce nut The torsion needed when being separated between 1 and limiting section 4 so that the torsion needed when being separated between nut 1 and limiting section 4 is significantly less than The torsion needed when nut body is separated with nut, so that the significantly more efficient mistake dismounting prevented between bolts and nuts body.
It is different according to torque magnitude, it is the 40%~60% of the width of nut 1 by the width design of smooth section 7, it is now, smooth Preferably, at the same time, the silk damage on internal thread 5 is lighter for the solution power effect that section 7 is played.
And when the width of smooth section 7 is less than aforementioned proportion scope, interior spiral shell when nut body is rotated is being turned using nut 1 Silk damage on line 5 is more serious, shortens the service life of nut 1;
And when the width of smooth section 7 is more than aforementioned proportion scope, the solution power effect that smooth section 7 is played can weaken, from And can not effectively play a part of preventing that bolts and nuts body from being dismantled by mistake.
For these reasons, the present invention for example may be used the width design of smooth section 7 is the width of nut 1 40%~60% To be 40%, 45%, 50%, 55%, 60%.
In addition, when being in close contact between nut 1 and limiting section 4, being influenceed by wet environment, nut 1 is likely to result in It can not be separated between limiting section 4 due to the reason such as getting rusty, now, if occur dismantling by mistake, can still cause bolts and nuts sheet Body is opened.In order to solve the above problems, the present embodiment 2 is arranged solution power packing ring 9 in smooth section 7, for by nut 1 with it is spacing Keep apart between portion 4.Preferably, the solution power packing ring 9 can use rubber washer.
Embodiment 3
With reference to shown in Fig. 5 and Fig. 6, nut in the present embodiment 3 in addition to following technical characteristic and the difference of embodiment 2, its Remaining technical characteristic can refer to above-described embodiment 2.
Back segment nut body 3 also includes spacing section 10, and this spacing section 10 is located at the rear side of thread segment 8.Set in spacing section 10 There is nut anti-dropout part, for preventing from sliding due to dismantling caused nut 1 by mistake when pipeline is vertically installed.
Nut anti-dropout part includes stopper slot 11 and spacing collar 12.Stopper slot 11 is arranged on spacing section 10, and this is spacing Groove 11 is circumferentially positioned on back segment nut body 3.Spacing collar 12 is adapted to stopper slot 11, and is installed in stopper slot 11.
Above-mentioned nut anti-dropout part is simple in construction, cost is low, and anti-dropout effect is good.
Certainly, described above is only presently preferred embodiments of the present invention, and the present invention is not limited to enumerate above-described embodiment, should When explanation, any those skilled in the art are all equivalent substitutes for being made, bright under the teaching of this specification Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.

Claims (3)

1. a kind of nut, bag nut body, nut body is constituted by forward and backward two sections;Interior spiral shell is provided with leading portion nut body Line;Characterized in that, the nut also includes nut;Being provided with the end of leading portion nut body is used to stop the spacing of nut Portion, the diameter of the limiting section is more than the external diameter of back segment nut body;Provided with the interior spiral shell with the nut on back segment nut body The external screw thread that line matches, is to be threadedly coupled between nut and back segment nut body;The back segment nut body is included by going to The smooth section and thread segment set gradually afterwards;The external screw thread is set in thread segment;Solution power packing ring is arranged with smooth section; The width of the smooth section is the 40%~60% of the nut width.
2. a kind of nut according to claim 1, it is characterised in that the back segment nut body also includes spacing section, should Spacing section is located on rear side of the thread segment;Nut anti-dropout part is provided with spacing section.
3. a kind of nut according to claim 2, it is characterised in that the nut anti-dropout part is included in back segment nut The stopper slot set on body and the spacing collar being adapted to the stopper slot, spacing collar are installed in the stopper slot.
CN201510939802.3A 2015-12-16 2015-12-16 A kind of nut Active CN105387051B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510939802.3A CN105387051B (en) 2015-12-16 2015-12-16 A kind of nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510939802.3A CN105387051B (en) 2015-12-16 2015-12-16 A kind of nut

Publications (2)

Publication Number Publication Date
CN105387051A CN105387051A (en) 2016-03-09
CN105387051B true CN105387051B (en) 2017-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2692403Y (en) * 2004-01-08 2005-04-13 中国国际海运集装箱(集团)股份有限公司 Antidisassembling screw bolt
GB2474011B (en) * 2009-09-14 2013-06-19 Farouse Design Ltd Attachment system
CN202811759U (en) * 2012-10-10 2013-03-20 浙江曙光汽车标准件有限公司 Limit bolt
CN103233965B (en) * 2012-12-14 2015-05-13 李红霞 Fastening bolt component
CN103267055A (en) * 2012-12-14 2013-08-28 李红霞 Fastening bolt
CN205260561U (en) * 2015-12-16 2016-05-25 青岛泰诺福伦机械有限公司 Nut

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