CN104265749B - A kind of loose-proof self-lock nut and production method thereof - Google Patents
A kind of loose-proof self-lock nut and production method thereof Download PDFInfo
- Publication number
- CN104265749B CN104265749B CN201410519783.4A CN201410519783A CN104265749B CN 104265749 B CN104265749 B CN 104265749B CN 201410519783 A CN201410519783 A CN 201410519783A CN 104265749 B CN104265749 B CN 104265749B
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- China
- Prior art keywords
- steel plate
- spring steel
- nut
- stepped slot
- loose
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
- F16B39/26—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
- F16B37/065—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut
Abstract
The present invention relates to auto parts machinery and manufacture field, particularly relate to a kind of structure simple, can effectively prevent nut from coming off, installing/dismounting is easy, the loose-proof self-lock nut that can reuse, comprise nut body, be located at the nut collar of nut body lower end rotationally, run through in the middle part of described nut body and be provided with a tapped hole, the upper end of described nut body offers a stepped slot, spring steel plate is placed with in described stepped slot, described stepped slot top is provided with the kink be arranged in by spring steel plate in stepped slot, described spring steel plate comprises the ring segment with elastic restoring force, two or more is uniform is arranged at ring segment upper end and radially protruding clip piece, described ring segment is formed around the axis rotation sweep of tapped hole by a skewed face, described clip piece inwardly protruding stretches in the tapped hole of nut body, the built-in length of described clip piece is between tapped hole internal diameter and external diameter.Also comprise a kind of production method of loose-proof self-lock nut.
Description
Technical field
The present invention relates to auto parts machinery and manufacture field, particularly relate to a kind of loose-proof self-lock nut for automobile tire bolt and production method thereof.
Background technique
The now cooperating structure of commercially most of tire bolt and nut, when wherein nut is all rotatably provided with nut collar usually to prevent installation or removal, nut and wheel disc steel ring produce and rotate and rub.But existing this composite structure be subject to comparatively big bang time, often nut more easily loosens, and even comes off, and particularly on some heavy-duty cars, it loosens, the phenomenon that comes off is more outstanding.And thisly loosen or come off and probably cause the relative movement of wheel disc steel ring and bolt to strengthen, thus the shearing making bolt receive strengthens, thus cause the sliding tooth of bolt, elongation, bending, fracture, for the traveling of vehicle, there is certain potential safety hazard.Nut and bolt how can be made to produce self-locking, make its difficult drop-off, installation and removal can be made again all comparatively easy, also always be the research of Professional visitors, test direction.
Summary of the invention
Therefore, for above-mentioned problem, the present invention propose a kind of structure simple, can effectively prevent nut from coming off, installing/dismounting is easy, the loose-proof self-lock nut that can reuse and production method thereof.
For achieving the above object, present invention employs following technological scheme: a kind of loose-proof self-lock nut, comprise nut body, be located at the nut collar of nut body lower end rotationally, run through in the middle part of described nut body and be provided with a tapped hole, the upper end of described nut body offers a stepped slot, spring steel plate is placed with in described stepped slot, described stepped slot top is provided with the kink be arranged in by spring steel plate in stepped slot, described spring steel plate comprises the ring segment with elastic restoring force, two or more is uniform is arranged at ring segment upper end and radially protruding clip piece, described ring segment is formed around the axis rotation sweep of tapped hole by a skewed face, described clip piece inwardly protruding stretches in the tapped hole of nut body, the built-in length of described clip piece is between tapped hole internal diameter and external diameter.
Further, a bluff piece is provided with between described spring steel plate and the kink of stepped slot.
Further, described ring segment is cone table shape ring segment.
Further, the upper and lower side of described clip piece forms a sharp-pointed portion respectively to intermediate, inclined.
Further, described clip piece is circular arc away from one end of ring segment, and this circular arc and ring segment are coaxially arranged.
Further, described spring steel plate offers a breach.
A production method for loose-proof self-lock nut, comprises the following steps:
Step one, existing nut body cuts a stepped slot;
Step 2, utilizes spring steel plate to produce to have the annulus of clip piece convex shape, then being bent by this annulus, making spring steel plate have elastic restoring force when being under pressure;
Step 3, is placed into spring steel plate in stepped slot, and on spring steel plate, place an annular can the bluff piece of holding spring steel plate;
Step 4, carries out riveting by the stepped slot of nut, and the top of stepped slot is bent inwards, thus extrudes and holding bluff piece and spring steel plate.
Further, in step one, the outer wall of nut body is cut, make the nut body outer wall with stepped slot place be cone table shape, to facilitate riveting.
By adopting preceding solution, the invention has the beneficial effects as follows: compared with existing tire nut, this loose-proof self-lock nut is by offering stepped slot, and in stepped slot the mode of riveting spring steel plate, when nut is connected with bolt, clip piece on spring steel plate also can clamping enter in the screw thread of bolt, and due to the screw thread on bolt be helical, and clip piece is plane, this just makes comparatively to be difficult to snap in when two relative clip pieces and bolt clamping, and while snapping in, spring steel sector-meeting produces resiliently deformable, and when after nut and bolt-locking, this resiliently deformable still exists, thus make to define self-locking between nut and bolt, in actual use, even if vibrate larger, the elastic restoring force of spring steel plate also can be offseted this vibration, thus prevent loosening of nut, come off, further, be provided with a bluff piece, make when riveting, have a plane to suppress the kink of spring steel plate, make the better effects if of riveting, the distortion of the spring steel plate after riveting is more steady, not easily warpage or riveting uneven, further, the built-in length of clip piece is unsuitable long also unsuitable too short, with being threaded of bolt when can conveniently install like this, enough elastic force also can be provided to guarantee the intensity of self-locking, further, the upper and lower side of described clip piece forms a sharp-pointed portion respectively to intermediate, inclined, and this sharp-pointed portion can snap between the screw thread of bolt more easily, further, the inner side edge of described clip piece is circular arc, and this circular arc is coaxial with ring segment, so arranges, can make clip piece can as much as possible with thread contact, thus more stable when making clip piece and threaded bolt contacts, elastic restoring force is better, further, described spring steel plate offers a breach, when spring steel plate coordinates with bolt, spring steel plate will open, thus convenient when making to snap in, nut is more easily screwed in, and after screw-in is stable, spring steel plate has coupling mechanism force, thus clip piece still can be made still to realize elastic restoring force with screw thread close contact.In the production method of loose-proof self-lock nut, by the operation of four steps, form loose-proof self-lock nut, production procedure is simple, easy to operate, manufacture cost is also lower.And, the outer wall of nut body is cut, makes the nut body outer wall with stepped slot place be coniform, more convenient riveting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that nut body is not through the structural representation of riveting;
Fig. 3 is the structural representation of spring steel plate;
Fig. 4 is the structural representation at A-A place in Fig. 3;
Fig. 5 be spring steel plate and bolt clamping time structural representation.
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
Referring to figs. 1 to Fig. 5, the present embodiment provides a kind of loose-proof self-lock nut, comprise nut body 1, be located at the nut collar 2 of nut body 1 lower end rotationally, the upper end of described nut body 1 offers a stepped slot 11, spring steel plate 3 is placed with in described stepped slot 11, described stepped slot 11 forms a kink 111 by the mode of riveting, and by kink, spring steel plate 3 is arranged in stepped slot 11, described spring steel plate 3 comprises the ring segment 31 with elastic restoring force, three are uniformly distributed and are arranged at ring segment 31 upper end and inwardly protruded clip piece 32, described clip piece 32 radially inwardly protruding stretches in the tapped hole 12 of nut body 1, and can with the screw thread snap-fit engagement of the bolt of nut screw connection, namely when nut coordinates with bolt, this clip piece 32 can coordinate with bolt and produce resiliently deformable.Upper side, the downside of described clip piece 32 form a sharp-pointed portion 321 respectively to intermediate, inclined.Described clip piece 32 is circular arc away from one end of ring segment, and this circular arc and ring segment are coaxially arranged.Described spring steel plate 3 offers a breach 33, between this breach 33 two clip pieces 32 located therein.
Described ring segment 31 is cone table shape ring segment, is namely formed around the axis rotation sweep of tapped hole by a skewed rectangular, also i.e. pattern as shown in Figure 3, Figure 4.Be provided with a bluff piece 4 above described spring steel plate 3, the stepped slot 11 of described riveting is by oppressing the mode pressuring spring steel disc 3 of bluff piece 4.
When nut to be connected with bolt coordinate time, after being rotated into certain depth, bolt can pass from the other end of nut, thus can contact with the clip piece of the spring steel plate be located on this one end, because the screw thread on bolt is skewed, and two pieces, left and right clip piece is horizontal, clip piece will be made like this not conform to the screw thread on bolt, in the process screwed in, screw thread can be oppressed clip piece thus be caused clip piece to carry out deformation, because the degree of this deformation is less, among the elastic range being in spring steel plate, so clip piece still can by the mode of screw-in and bolt clamping, and can be departed from by the mode of back-out and bolt.But when after screw-in, when being in static, left and right two spring steel sector-meetings prop up upside and the downside of same screw thread, or prop up upside or the downside of same screw thread simultaneously, as shown in Figure 5, form the self-locking state of a tensioning when will make like this to vibrate between the deformation of clip piece of spring steel plate and screw thread, thus prevent nut loosening, come off.Because screw thread tilts, clip piece can be made so inclined, thus make tension force during each clip piece holding have difference, thus ensure that the working life of elastic steel sheet can be elongated.
The built-in length of described clip piece 32 equals the maximum projection of nut body 1 screw thread, the length of this projection is comparatively suitable length, also this length can be greater than or less than, but when projection length is greater than the maximum projection of screw thread, clip piece may comparatively be difficult to when coordinating with bolt coordinate, and even cannot coordinate; When projection length is less, when namely only protruding from tapped hole sub-fraction, coordinating of clip piece and bolt is comparatively easy, but the elastic force be to provide is also just less, makes nut and bolt produce the ability of self-locking just more weak.
Ring segment in above-mentioned spring steel plate can be cone table shape ring segment also can be spherical shape ring segment, namely the face having the inclination of arc by is formed around the axis rotation sweep of tapped hole, can also be the ring segment of other shapes, certain elastic force can be provided when pressurized as long as meet.Above-mentioned clip piece quantity also can be three, and namely the mode at 120 degree, interval is circumferentially arranged, and also can be arranged to four, and namely the mode at 90 degree, interval is circumferentially arranged.
Stepped slot form a kink by the mode of riveting, owing to being rivet often to produce distortion, and can pressuring spring steel disc during riveting, wherein Fig. 1 be the schematic diagram to be not have out of shape, and Fig. 5 is then the schematic diagram after being out of shape.
The production method of above-mentioned loose-proof self-lock nut, comprises the following steps:
Step one, existing nut body cuts a stepped slot, is cut by the outer wall of nut body, make the nut body outer wall with stepped slot place be cone table shape, to facilitate riveting;
Step 2, utilizes spring steel plate to produce to have the annulus of clip piece convex shape, then being bent by this annulus, making spring steel plate have elastic restoring force when being under pressure;
Step 3, is placed into spring steel plate in stepped slot, and on spring steel plate, place an annular can the bluff piece of holding spring steel plate;
Step 4, carries out riveting by the stepped slot of nut, and the top of stepped slot is bent inwards, thus extrudes and holding bluff piece and spring steel plate.
Above-mentioned punching press, the working procedure of riveting are ordinary skill in the art means, are not described in detail at this.During above-mentioned riveting, should guarantee that spring steel plate has certain elastic restoring force.
Compared with existing tire nut, this loose-proof self-lock nut is by offering stepped slot, and in stepped slot the mode of riveting spring steel plate, when nut is connected with bolt, clip piece on spring steel plate also can clamping enter in the screw thread of bolt, and due to the screw thread on bolt be helical, and clip piece is plane, this just makes comparatively to be difficult to snap in when two relative clip pieces and bolt clamping, and while snapping in, spring steel sector-meeting produces resiliently deformable, and when after nut and bolt-locking, this resiliently deformable still exists, thus make to define self-locking between nut and bolt, in actual use, even if vibrate larger, the elastic restoring force of spring steel plate also can be offseted this vibration, thus prevent loosening of nut, come off, further, be provided with a bluff piece, make when riveting, have a plane to suppress the kink of spring steel plate, make the better effects if of riveting, the distortion of the spring steel plate after riveting is more steady, not easily warpage or riveting uneven, further, the built-in length of clip piece is unsuitable long also unsuitable too short, with being threaded of bolt when can conveniently install like this, enough elastic force also can be provided to guarantee the intensity of self-locking, further, the upper and lower side of described clip piece forms a sharp-pointed portion respectively to intermediate, inclined, and this sharp-pointed portion can snap between the screw thread of bolt more easily, further, the inner side edge of described clip piece is circular arc, and this circular arc is coaxial with ring segment, so arranges, can make clip piece can as much as possible with thread contact, thus more stable when making clip piece and threaded bolt contacts, elastic restoring force is better, further, described spring steel plate offers a breach, when spring steel plate coordinates with bolt, spring steel plate will open, thus convenient when making to snap in, nut is more easily screwed in, and after screw-in is stable, spring steel plate has coupling mechanism force, thus clip piece still can be made still to realize elastic restoring force with screw thread close contact.In the production method of loose-proof self-lock nut, by the operation of four steps, form loose-proof self-lock nut, production procedure is simple, easy to operate, manufacture cost is also lower.And, the outer wall of nut body is cut, makes the nut body outer wall with stepped slot place be coniform, more convenient riveting.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (8)
1. a loose-proof self-lock nut, comprise nut body, be located at the nut collar of nut body lower end rotationally, run through in the middle part of described nut body and be provided with a tapped hole, it is characterized in that: the upper end of described nut body offers a stepped slot, spring steel plate is placed with in described stepped slot, described stepped slot top is provided with the kink be arranged in by spring steel plate in stepped slot, described spring steel plate comprises the ring segment with elastic restoring force, two or more is uniform is arranged at ring segment upper end and radially protruding clip piece, described ring segment is formed around the axis rotation sweep of tapped hole by a skewed face, described clip piece inwardly protruding stretches in the tapped hole of nut body, the built-in length of described clip piece is between tapped hole internal diameter and external diameter.
2. a kind of loose-proof self-lock nut according to claim 1, is characterized in that: be provided with a bluff piece between described spring steel plate and the kink of stepped slot.
3. a kind of loose-proof self-lock nut according to claim 1 and 2, is characterized in that: described ring segment is cone table shape ring segment.
4. a kind of loose-proof self-lock nut according to claim 1 and 2, is characterized in that: the upper and lower side of described clip piece forms a sharp-pointed portion respectively to intermediate, inclined.
5. a kind of loose-proof self-lock nut according to claim 4, is characterized in that: described clip piece is circular arc away from one end of ring segment, and this circular arc and ring segment are coaxially arranged.
6. a kind of loose-proof self-lock nut according to claim 1 and 2, is characterized in that: described spring steel plate offers a breach.
7. a production method for loose-proof self-lock nut, is characterized in that, comprises the following steps:
Step one, existing nut body cuts a stepped slot;
Step 2, utilizes spring steel plate to produce to have the annulus of clip piece convex shape, then being bent by this annulus, making spring steel plate have elastic restoring force when being under pressure;
Step 3, is placed into spring steel plate in stepped slot, and on spring steel plate, place an annular can the bluff piece of holding spring steel plate;
Step 4, carries out riveting by the stepped slot of nut, and the top of stepped slot is bent inwards, thus extrudes and holding bluff piece and spring steel plate.
8. the production method of a kind of loose-proof self-lock nut according to claim 7, is characterized in that: in step one, is cut by the outer wall of nut body, makes the nut body outer wall with stepped slot place be cone table shape, to facilitate riveting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410519783.4A CN104265749B (en) | 2014-09-30 | 2014-09-30 | A kind of loose-proof self-lock nut and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410519783.4A CN104265749B (en) | 2014-09-30 | 2014-09-30 | A kind of loose-proof self-lock nut and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104265749A CN104265749A (en) | 2015-01-07 |
| CN104265749B true CN104265749B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410519783.4A Expired - Fee Related CN104265749B (en) | 2014-09-30 | 2014-09-30 | A kind of loose-proof self-lock nut and production method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104265749B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275961B (en) * | 2015-10-09 | 2018-10-02 | 武汉武船机电设备有限责任公司 | A kind of chocking construction |
| CN108188303B (en) * | 2017-12-28 | 2019-08-27 | 温州市金盛紧固件有限公司 | The processing technology of anti-loosing nut |
| CN109773045B (en) * | 2018-12-28 | 2023-12-05 | 苏州誉高紧固系统有限公司 | Die for riveting locknut and production process thereof |
| KR102016885B1 (en) * | 2019-04-17 | 2019-08-30 | 문상열 | Anti-releasing nut |
| CN110131284B (en) * | 2019-06-10 | 2023-12-05 | 浙江盛世瑞金紧固件股份有限公司 | High-strength anti-loose anti-theft bolt |
| CN113581095B (en) * | 2021-08-11 | 2023-04-07 | 浙江大树标牌有限公司 | Fixing and sealing device for automobile license plate |
| CN114941647A (en) * | 2022-04-11 | 2022-08-26 | 烟台艾迪艾创机器人科技有限公司 | Self-locking nut |
| CN116517945B (en) * | 2023-07-03 | 2023-09-26 | 福建省华盖机械制造有限公司 | Impact-resistant locknut and forming method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002286015A (en) * | 2001-03-27 | 2002-10-03 | Mitsubishi Electric Corp | Member fastening body and its manufacturing method |
| CN2763607Y (en) * | 2005-01-29 | 2006-03-08 | 温州爱德标准件有限公司 | Vibration proof screw nut |
| CN101900158A (en) * | 2009-06-01 | 2010-12-01 | 海洋王照明科技股份有限公司 | Anti-loosing nut |
| CN202673950U (en) * | 2012-06-09 | 2013-01-16 | 南通高盛机械制造有限公司 | Anti-looseness self-locking nut |
| CN202833558U (en) * | 2012-08-17 | 2013-03-27 | 上海底特精密紧固件有限公司 | Anti-loose elastic sheet nut |
| CN204099385U (en) * | 2014-09-30 | 2015-01-14 | 泉州市锦汽机械配件有限公司 | A kind of loose-proof self-lock nut |
-
2014
- 2014-09-30 CN CN201410519783.4A patent/CN104265749B/en not_active Expired - Fee Related
Also Published As
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| CN104265749A (en) | 2015-01-07 |
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