CN202194925U - Light type high-anti-fatigue nut - Google Patents
Light type high-anti-fatigue nut Download PDFInfo
- Publication number
- CN202194925U CN202194925U CN2011202434242U CN201120243424U CN202194925U CN 202194925 U CN202194925 U CN 202194925U CN 2011202434242 U CN2011202434242 U CN 2011202434242U CN 201120243424 U CN201120243424 U CN 201120243424U CN 202194925 U CN202194925 U CN 202194925U
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- China
- Prior art keywords
- nut
- hexagon head
- internal thread
- fatigue
- nut body
- 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.)
- Withdrawn - After Issue
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- 230000002929 anti-fatigue Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model discloses a light type high-anti-fatigue nut, which comprises a nut body. The front of the nut body (1) is provided with a cylindrical bearing platform (2) with a support end face. The length (L1) of the cylindrical bearing platform (2) with the support end face is 1-3 times the pitch of internal threads (6) of the nut body (1). The rear end of the nut body (1) is provided with a hexagonal head (4). The length (L2) from the top of the hexagonal head (4) to the bottom of the hexagonal head (4) is 2-4 times the pitch of the internal threads (6). A wedge-shaped outer wall (3) with an arc cylindrical outer surface is connected between the bearing platform (2) of the nut body (1) and the bottom of the hexagonal head (4). The nut in the utility model has the advantages of low manufacturing cost, reliable working performances, relative lightness on the basis of the same anti-fatigue strength and uniform pre-tightening force maintenance due to no interference from personal factors during an application process. Furthermore, the nut can generate self-locking moment when used. Therefore, the nut can be effectively prevented from being loosened.
Description
Technical field
the utility model relates to a kind of light-duty highly anti-fatigue nut, belongs to the screw connector technical field.
Background technique
in the aerospace vehicle Element Design, the people of technical field of fastening know that all the high-performance fastening piece is very expensive.Weight is a parameter of most critical.On aerospace vehicle, overweight all is undesirable; At present, generally adopt the material (like titanium alloy material) of expensive lightweight to be used as the lighter nut of production requirement weight, the method that this employing expensive is made nut has increased cost of material and running cost.And adopt the produced fastener nut of common process method to require light, fatigue resistance to require to meet the demands aspect high at present in weight.Particularly alternating force is being arranged or be prone to vibrative use occasion, preventing that nut from getting loose is very crucial problem; At needs the occasion of identical pretightening force is provided, prevents the interference of personal factor again, the nut that adopts existing technology to produce but is difficult to reach this requirement.Therefore, the nut that adopts existing technology to produce not only exists the low and high problem of working service cost of the flight safety coefficient that causes aerospace vehicle easily, but also exists the problem that is not easy to control pretightening force of installing.Therefore, existing nut still is not ideal enough, still can not satisfy cost of production, usage requirement that functional reliability is high.
Summary of the invention
The purpose of
the utility model is; Provide that a kind of fabricating cost is lower, weight is light, reliable working performance, and can guarantee nut can not receive interference from human factor in use and keep the light-duty highly anti-fatigue nut of identical pretightening force, to overcome the deficiency of existing technology.
The technological scheme of
the utility model is achieved in that a kind of light-duty highly anti-fatigue nut of the utility model; Comprise the nut body that is provided with internal thread; Front end at nut body is provided with the columniform bearing table that band supports end face, and the length of the columniform bearing table of band support end face is 1～3 times of internal thread pitch; Be provided with orthohexagonal hexagon head in the rear end of nut body, and the hexagon head top end is 2～4 times of internal thread pitch to the length of hexagon head bottom end; Between the bearing table of nut body and hexagon head bottom end, be connected with the wedge shape outer wall that outer surface is the curved circular cylinder.
The external diameter of
above-mentioned columniform bearing table is less than or equal to orthohexagonal how much circumscribed circle diameters of hexagon head and greater than orthohexagonal how much inscribed circle diameters of hexagon head.
The diameter of the big end of wedge shape outer wall of
above-mentioned curved circular cylinder equates with the external diameter of bearing table, the diameter of the wedge shape outer wall small end of curved circular cylinder less than orthohexagonal how much inscribed circle diameters of hexagon head greater than the core diameter of thread of internal thread.
are provided with counterbore in the internal thread of nut body front end, and the diameter of counterbore is greater than 0.1～0.5 millimeter of the core diameter of thread of internal thread, and the degree of depth of counterbore is 1～2 times of internal thread pitch.
are provided with annular cut-off neck slot on the top end of the hexagon head of nut body.
The little annular circular diameter of
above-mentioned annular cut-off neck slot equates that with wedge shape outer wall end diameter the groove bottom of annular cut-off neck slot is not less than 1 pitch of internal thread to the distance of hexagon head bottom end.
are to be provided with 1～4 radial punch point that can make the internal thread radial protrusion on the surface of wedge shape outer wall of wedge shape outer wall joint of curved circular cylinder at above-mentioned hexagon head bottom end and outer surface.
owing to adopted technique scheme, the utility model through the optimization of structure shape, makes nut on the basis that guarantees usability, reach weight and the gentliest changes on the basis that does not reduce plain nut structural strength and fatigue resistance; Simultaneously the utility model is through being on the surface, wedge shape outer wall joint of curved circular cylinder 1～4 radial punch point to be set at hexagon head bottom end and outer surface; Through punching press to this radial punch point; Make the internal thread of radial punch Dian Chu corresponding position protruding to radially; Thereby when using the utility model, can produce self-locking moment, this can effectively prevent the problem that nut gets loose when having alternating force or easy vibrative occasion to use.The utility model is through being provided with cut-off neck slot on hexagon head, make this cut-off neck slot can control nut in using process in groups, guarantees identical mounting torque and reaches identical pretightening force, reduces the influence that personal factor causes simultaneously.Through evidence, under the situation of identical nut length and identical internal thread and same material, the nut that adopts the utility model to make is lighter by 1/5～1/3 than the nut of conventional construction of the prior art, and its fatigue resistance is identical.Therefore; The utility model compared with prior art; The utility model has not only that fabricating cost is low, reliable working performance, in light weight under identical fatigue resistance, can not receive the interference of personal factor in use and keep the advantage of identical pretightening force; Self-locking moment can be produced in use but also have, thereby the advantage that nut gets loose can be effectively prevented.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is orthohexagonal how much circumcircles of the utility model nut body hexagon head and the structural relation schematic representation of how much incircles.
Being labeled as in
accompanying drawing: 1-nut body, 2-bearing table, 3-wedge shape outer wall; 3.1-the radial punch of wedge shape outer wall point, 4-hexagon head, orthohexagonal how much circumcircles of 4.1-hexagon head; 4.2-orthohexagonal how much incircles of hexagon head, 5-counterbore, 6-internal thread; 7-annular cut-off neck slot, the little annular circle of 7.1-annular cut-off neck slot; The groove bottom of H-annular cut-off neck slot arrives the distance of hexagon head bottom end, the length of L1-bearing table, and L2-hexagon head top end is to the length of bottom end.
Embodiment
are done further to specify to the utility model below in conjunction with accompanying drawing and embodiment.But not as any restriction foundation to the utility model.
The embodiment of
the utility model: when making a kind of light-duty highly anti-fatigue nut of the utility model; Its Manufacturing material can select for use traditional nut material or alloy material to make; The light-duty highly anti-fatigue nut of the utility model comprises the nut body 1 that is provided with internal thread 6; The light-duty highly anti-fatigue nut structure schematic representation of the utility model is as shown in Figure 1; During making; Produce the columniform bearing table 2 that band supports end face at the front end of nut body 1, the length L 1 that this band is supported the columniform bearing table 2 of end face is controlled at 1～3 times scope of internal thread 6 pitch, and the external diameter of bearing table 2 is made into orthohexagonal how much circumcircle 4.1 diameters of being less than or equal to hexagon head 4 and greater than orthohexagonal geometry incircle 4.2 diameters (as shown in Figure 2) of hexagon head 4; Produce orthohexagonal hexagon head 4 in the rear end of nut body 1, these hexagon head 4 top ends are controlled at 2～4 times of internal thread 6 pitch to the length L 2 of hexagon head 4 bottom ends; Between the bearing table 2 of nut body 1 and hexagon head 4 bottom ends, produce the wedge shape outer wall 3 that outer surface is the curved circular cylinder; The diameters of the wedge shape outer wall of curved circular cylinder 3 big ends are made into the external diameter of bearing table 2 equate, its end diameter is made into less than hexagon head 4 orthohexagonal geometry incircle 4.2 diameters greater than the core diameter of thread of internal thread 6; In order to reach further weight reduction and not reduce the purpose of nut strength; Can in the internal thread 6 of nut body 1 front end, make a counterbore 5; And the diameter of counterbore 5 is controlled in the scope greater than 0.1～0.5 millimeter of the core diameter of thread of internal thread 6, the degree of depth with counterbore 5 is controlled in 1～2 times of scope of internal thread 6 pitch simultaneously; In order to guarantee in use; Nut can only be used under identical pretightening force; Can on the top end of the hexagon head 4 of nut body 1, produce an annular cut-off neck slot 7; Little annular circle 7.1 diameters of annular cut-off neck slot 7 are made into wedge shape outer wall 3 end diameters equate, simultaneously the groove bottom of annular cut-off neck slot 7 is controlled at 1 pitch (the big I of H value is confirmed by existing calculation method or existing test method according to concrete nut material and desired pretightening force size) that is not less than internal thread 6 to the distance H of hexagon head 4 bottom ends; In order to make nut have certain self-locking moment in use; Can, hexagon head 4 bottom ends and outer surface adopt the mode of compacting to suppress 1～4 radial punch point 3.1 on being the surface of wedge shape outer wall 3 of wedge shape outer wall 3 joints of curved circular cylinder; Can make like this that to put the screw thread of internal thread 6 of 3.1 corresponding positions in radial punch protruding to direction radially, thereby make the nut of the utility model can produce certain self-locking moment in use.
are in practical application; In the process of the light-duty highly anti-fatigue nut of tightening the utility model through hexagon head 4; When this nut screwing clamping arrives the precalculated position; And after reaching predetermined mounting torque,, can make like this that the utility model reaches that screwing force is the strongest if afterburning again just can twisting into two parts hexagon head 4 along cut-off neck slot 7 places split, weight the gentliest, join strength and the highest optimum Working of fatigue resistance.
Claims (7)
1. light-duty highly anti-fatigue nut; Comprise the nut body (1) that is provided with internal thread (6); It is characterized in that: the front end at nut body (1) is provided with the columniform bearing table (2) that band supports end face, and the length (L1) of the columniform bearing table (2) of band support end face is 1～3 times of internal thread (6) pitch; Be provided with orthohexagonal hexagon head (4) in the rear end of nut body (1), and hexagon head (4) top end is 2～4 times of internal thread (6) pitch to the length (L2) of hexagon head (4) bottom end; Between the bearing table (2) of nut body (1) and hexagon head (4) bottom end, be connected with the wedge shape outer wall (3) that outer surface is the curved circular cylinder.
2. light-duty highly anti-fatigue nut according to claim 1 is characterized in that: the external diameter of columniform bearing table (2) is less than or equal to orthohexagonal how much circumcircle (4.1) diameters of hexagon head (4) and greater than orthohexagonal how much incircle (4.2) diameters of hexagon head (4).
3. light-duty highly anti-fatigue nut according to claim 1; It is characterized in that: the diameter of the big end of the wedge shape outer wall (3) of curved circular cylinder equates with the external diameter of bearing table (2), the diameter of wedge shape outer wall (3) small end of curved circular cylinder less than hexagon head (4) orthohexagonal geometry incircle (4.2) diameters greater than the core diameter of thread of internal thread (6).
4. light-duty highly anti-fatigue nut according to claim 1; It is characterized in that: in the internal thread (6) of nut body (1) front end, be provided with counterbore (5); And the diameter of counterbore (5) is greater than 0.1～0.5 millimeter of the core diameter of thread of internal thread (6), and the degree of depth of counterbore (5) is 1～2 times of internal thread (6) pitch.
5. light-duty highly anti-fatigue nut according to claim 1 is characterized in that: on the top end of the hexagon head (4) of nut body (1), be provided with annular cut-off neck slot (7).
6. light-duty highly anti-fatigue nut according to claim 5; It is characterized in that: little annular circle (7.1) diameter of annular cut-off neck slot (7) equates that with wedge shape outer wall (3) end diameter the groove bottom of annular cut-off neck slot (7) is not less than 1 pitch of internal thread (6) to the distance (H) of hexagon head (4) bottom end.
7. light-duty highly anti-fatigue nut according to claim 1 is characterized in that: be to be provided with 1～4 radial punch point (3.1) that can make internal thread (6) radial protrusion on the surface of wedge shape outer wall (3) of wedge shape outer wall (3) joint of curved circular cylinder at hexagon head (4) bottom end and outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202434242U CN202194925U (en) | 2011-07-12 | 2011-07-12 | Light type high-anti-fatigue nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202434242U CN202194925U (en) | 2011-07-12 | 2011-07-12 | Light type high-anti-fatigue nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194925U true CN202194925U (en) | 2012-04-18 |
Family
ID=45949839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202434242U Withdrawn - After Issue CN202194925U (en) | 2011-07-12 | 2011-07-12 | Light type high-anti-fatigue nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878181A (en) * | 2011-07-12 | 2013-01-16 | 航天精工有限公司 | Light high-fatigue-resistance nut |
-
2011
- 2011-07-12 CN CN2011202434242U patent/CN202194925U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878181A (en) * | 2011-07-12 | 2013-01-16 | 航天精工有限公司 | Light high-fatigue-resistance nut |
| CN102878181B (en) * | 2011-07-12 | 2015-09-30 | 航天精工有限公司 | A kind of light type high-anti-fatigue nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120418 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |