CN202790011U - Anti-loosening flange nut - Google Patents

Anti-loosening flange nut Download PDF

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Publication number
CN202790011U
CN202790011U CN 201220437272 CN201220437272U CN202790011U CN 202790011 U CN202790011 U CN 202790011U CN 201220437272 CN201220437272 CN 201220437272 CN 201220437272 U CN201220437272 U CN 201220437272U CN 202790011 U CN202790011 U CN 202790011U
Authority
CN
China
Prior art keywords
nut
flange
loose
annular groove
flange nut
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.)
Expired - Fee Related
Application number
CN 201220437272
Other languages
Chinese (zh)
Inventor
叶鉴民
史程中
由毅
沈源
袁爽
赵福全
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.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd Hangzhou Branch
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd Hangzhou Branch
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
Publication date
Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd Hangzhou Branch filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN 201220437272 priority Critical patent/CN202790011U/en
Application granted granted Critical
Publication of CN202790011U publication Critical patent/CN202790011U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an anti-loosening flange nut, belonging to the technical field of machinery. By the adoption of the anti-loosening flange nut, the problems of nonuniform distribution and poor anti-loosening effect of threaded loads in various parts of the current flange nuts are solved. The anti-loosening flange nut comprises a nut body, the nut body comprises an annular flange part and a connection part integrally connected with the flange part, and an annular groove is opened on one end of the connection part close to the flange part. The fatigue strength of the threaded connection of the anti-loosening flange nut is high, the threaded loads in various parts are uniformly distributed, the anti-loosening effect of the nut is excellent, the structure is simple, the manufacture is convenient, and the service life is long.

Description

Loose-proof flange nut
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of flange nut, particularly a kind of loose-proof flange nut.
Background technique
Nut is to have internal thread and be used in order to transmit the mechanical parts of motion or power with screw rod.At present, in the component assembling of automobile, all be to adopt bolts and nuts to cooperate usually, two component fixedly are assembled together.In the long-term using process of component, locking be an important subject that is threaded always.Usually in following two kinds of situations, can make be threaded lax: the one, under shock and vibration or varying load effect, the frictional force between screw pair may reduce or pop-off, will make after this phenomenon repeatedly repeats to connect to get loose; The 2nd, in the larger situation of high temperature or temperature variation, owing to be threaded and material generation creep and the stress relaxation of connected piece, also can make pretightening force and frictional force in the connection reduce gradually to cause connection failure.Therefore and in a single day screw thread gets loose, and can affect the normal operation of machine even cause serious accident, is necessary that double thread connects to carry out locking processing.
In existing industrial field, it all is that flange nut with pad and nut integral type carries out fastening locking that many equipment are arranged.Existing flange nut is when connecting stand under load, screw thread has the trend that is stretched on the bolt, and the screw thread on the nut has compressed trend, both deformation tendency are opposite, thereby so that the suffered load of screw thread mainly concentrates on the first lap screw thread place that is connected with bolt on the nut, each circle successively decreases successively afterwards, load skewness on the each several part screw thread, the fatigue strength that is threaded is relatively poor, cause easily the deformation failure of screw thread, working life is shorter, also can cause simultaneously nut and bolt to occur relaxing or coming off, affect the normal operation of machine even cause serious accident, anti-loosing effect is relatively poor.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed the loose-proof flange nut that a kind of screw food distribution is even, anti-loosing effect is good.
The purpose of this utility model can realize by following technical proposal: a kind of loose-proof flange nut, comprise nut body, described nut body comprises flange part in the form of a ring and the joint that is connected as a single entity with described flange part, and described joint is concaved with annular groove near on the end face of flange part one end.
Be concaved with annular groove on the joint of this loose-proof flange nut, can be so that the nearly flange part end of joint has the effect that suspends when being connected with bolt, thereby so that when flange nut connects stand under load, screw thread has the trend that is stretched on the bolt, and this part screw thread relative with annular groove also has the trend that is stretched on the nut, both deformation tendency are the same, effectively improved the fatigue strength that is threaded relative with annular recess on the nut, not yielding, increased the life-span of screw thread, so that each several part screw thread stand under load is even on the nut.
In above-mentioned loose-proof flange nut, the width of described annular groove successively decreases inward successively from opening.The width of annular groove successively decreases inward successively from opening, thereby so that on the nut the suffered load of each several part screw thread more even, improve the fatigue strength of screw thread, increase the life-span of screw thread.
In above-mentioned loose-proof flange nut, the degree of depth of described annular groove is 4~10mm.The degree of depth of annular groove is too shallow, and the effect of the uniform load that plays is relatively poor; The degree of depth of annular groove is too dark, and the bulk strength of nut is relatively poor.The degree of depth of annular groove in the application's scope, can so that on the nut the suffered load of each several part screw thread more even, also guaranteed the intensity that nut is required simultaneously.
In above-mentioned loose-proof flange nut, the contacted end face of described flange part and connected piece is provided with continuously and the slideproof tooth that turns opposite direction of bearing of trend and described nut body.By the effect of slideproof tooth, increased the roughness of flange part and connected piece surface of contact, increased the frictional force of surface of contact, can prevent effectively that flange nut is against the tightening direction slip that gets loose.
In above-mentioned loose-proof flange nut, described slideproof tooth is unidirectional helical teeth.Slideproof tooth is unidirectional helical teeth, has preferably pretightening force, the better effects if of the anti-loose slip of playing, more reliable.
In above-mentioned loose-proof flange nut, described nut body adopts high tensile steel to make.Nut body adopts high tensile steel to make, and overall performance is better, and the intensity that is threaded is higher, has improved the reliability that is threaded, and is difficult in the using process getting loose, and working life is also longer.
Compared with prior art, this loose-proof flange nut has the following advantages:
1, joint offers annular groove near on the end of flange part, makes it have the effect that suspends, and has improved the fatigue strength that is threaded, and is not yielding, increased the life-span of screw thread, and the suffered load of each several part screw thread distributes and is tending towards even on the nut.
2, the end face of flange part is provided with slideproof tooth, has increased the frictional force of surface of contact, can prevent effectively that flange nut is against the tightening direction slip that gets loose.
3, adopt high tensile steel to make, improved the reliability that is threaded and be difficult for getting loose, simple in structure, easy to make, long service life.
Description of drawings
Fig. 1 is the structural representation of this loose-proof flange nut.
Fig. 2 is the sectional view of this loose-proof flange nut.
Among the figure, 1, nut body; 11, flange part, 111, slideproof tooth; 12, joint; 121, annular groove.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Shown in Fig. 1-2, this loose-proof flange nut comprises nut body 1, and nut body 1 adopts high tensile steel to make.Nut body 1 comprises flange part 11 in the form of a ring and is linked as a logical joint 12 with flange part 11.Flange part 11 is provided with continuously and the slideproof tooth that turns opposite direction 111 of bearing of trend and nut body 1 with the contacted end face of connected piece, and slideproof tooth 111 is unidirectional helical teeth.Joint 12 is concaved with annular groove 121 near on the end face of flange part 11 1 ends, and the degree of depth of annular groove 121 is 4~10mm, and the width of annular groove 121 successively decreases inward successively from opening.
This loose-proof flange nut joint 12 is concaved with annular groove 121 near on the end face of flange part 11 1 ends, make it have the effect that suspends, when flange nut connects stand under load, screw thread has the trend that is stretched on the bolt, and this part screw thread relative with annular groove 121 also has the trend that is stretched on the nut, both deformation tendency are the same, effectively improved on the nut fatigue strength that is threaded relative with annular groove 121, not yielding, increased the life-span of screw thread, so that each several part screw thread stand under load is even on the nut.Simultaneously, the end face of flange part 11 is provided with slideproof tooth 111, has increased the frictional force of surface of contact, can prevent effectively that flange nut is against the tightening direction slip that gets loose.This loose-proof flange nut adopts high tensile steel to make, and has improved the reliability that is threaded and has been difficult for getting loose, and is simple in structure, easy to make, long service life.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as nut body 1, flange part 11, slideproof tooth 111, joint 12, annular groove 121, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims (6)

1. loose-proof flange nut, comprise nut body (1), it is characterized in that, described nut body (1) comprises flange part (11) in the form of a ring and the joint (12) that is connected as a single entity with described flange part, and described joint (12) is concaved with annular groove (121) near on the end face of flange part (11) one ends.
2. loose-proof flange nut according to claim 1 is characterized in that, the width of described annular groove (121) successively decreases inward successively from opening.
3. loose-proof flange nut according to claim 1 and 2 is characterized in that, the degree of depth of described annular groove (121) is 4~10mm.
4. loose-proof flange nut according to claim 3 is characterized in that, described flange part (11) is provided with continuously and the slideproof tooth that turns opposite direction (111) of bearing of trend and described nut body (1) with the contacted end face of connected piece.
5. loose-proof flange nut according to claim 4 is characterized in that, described slideproof tooth (111) is unidirectional helical teeth.
6. loose-proof flange nut according to claim 5 is characterized in that, described nut body (1) adopts high tensile steel to make.
CN 201220437272 2012-08-30 2012-08-30 Anti-loosening flange nut Expired - Fee Related CN202790011U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220437272 CN202790011U (en) 2012-08-30 2012-08-30 Anti-loosening flange nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220437272 CN202790011U (en) 2012-08-30 2012-08-30 Anti-loosening flange nut

Publications (1)

Publication Number Publication Date
CN202790011U true CN202790011U (en) 2013-03-13

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ID=47817277

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220437272 Expired - Fee Related CN202790011U (en) 2012-08-30 2012-08-30 Anti-loosening flange nut

Country Status (1)

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CN (1) CN202790011U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106618816A (en) * 2016-11-22 2017-05-10 中国人民解放军第四军医大学 Novel prosthetic limb connecting device
CN109899367A (en) * 2019-04-17 2019-06-18 海盐宏茂五金制品有限公司 A kind of anti-loosening fastening type flange nut
CN111075822A (en) * 2020-01-21 2020-04-28 上海球明标准件有限公司 High-strength tensile nut for connecting and fastening

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106618816A (en) * 2016-11-22 2017-05-10 中国人民解放军第四军医大学 Novel prosthetic limb connecting device
CN109899367A (en) * 2019-04-17 2019-06-18 海盐宏茂五金制品有限公司 A kind of anti-loosening fastening type flange nut
CN111075822A (en) * 2020-01-21 2020-04-28 上海球明标准件有限公司 High-strength tensile nut for connecting and fastening

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20200830

CF01 Termination of patent right due to non-payment of annual fee