CN104675832A - Thread slip preventive plastic nut - Google Patents
Thread slip preventive plastic nut Download PDFInfo
- Publication number
- CN104675832A CN104675832A CN201510047023.2A CN201510047023A CN104675832A CN 104675832 A CN104675832 A CN 104675832A CN 201510047023 A CN201510047023 A CN 201510047023A CN 104675832 A CN104675832 A CN 104675832A
- Authority
- CN
- China
- Prior art keywords
- plastic nut
- nut
- tapped hole
- internal surface
- hole internal
- 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.)
- Granted
Links
- 230000003449 preventive effect Effects 0.000 title abstract 3
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a thread slip preventive plastic nut. The screw-in end of the inner surface of a threaded hole of the plastic nut is provided with a slope; the diameter of the screw-in end of the threaded hole is less than that of an external thread of a tapping screw. The thread slip preventive plastic nut has the advantages that the nut is used for matching with the tapping screw, thread connection friction and pretension can be still retained for the nut under vibration, impact, variable load and sharp temperature fluctuation, loosening and thread slip are prevented for the nut and fitting safety of a fastener is improved.
Description
Technical field
The present invention relates to a kind of fastening piece, particularly relate to the plastic nut of anti-skid teeth.
Background technique
When plastic nut is tightened on self threading pin, the helical thread portion that plastic nut contacts with self threading pin is at first owing to repeatedly being extruded by self threading pin, impacting, easy appearance wearing and tearing, the friction torque between screw pair may be made to reduce even to disappear in some Environmental Conditions (as vibration, impact, variable load etc.), thus cause plastic nut tightness to reduce, occur loosening and even slide the phenomenons such as tooth.
Fig. 1 is the change schematic diagram before and after plastic nut of the prior art assembling.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of plastic nut of anti-skid teeth.
The invention provides a kind of plastic nut of anti-skid teeth, the screw terminal of the tapped hole internal surface of this plastic nut is provided with inclined-plane, and the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter.
As a further improvement on the present invention, the vertical surface of described inclined-plane and tapped hole internal surface is 2 to 4 spend angle.
As a further improvement on the present invention, the vertical surface of described inclined-plane and tapped hole internal surface is 3 degree of angles.
As a further improvement on the present invention, the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 1 to 3 millimeter.
As a further improvement on the present invention, the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 2 millimeters.
The invention has the beneficial effects as follows: the invention provides a kind of for coordinating with self threading pin and the plastic nut of anti-on-slip tooth, the frictional force that can effectively make plastic nut still can keep being threaded under vibration, impact, variable load and larger temperature variation and pretightening force, avoid plastic nut to occur loosening and sliding tooth, increase the Security of appended claims.
Accompanying drawing explanation
Fig. 1 is the change schematic diagram before and after plastic nut of the prior art assembling self threading pin.
Fig. 2 is the change schematic diagram before and after plastic nut of the present invention assembling self threading pin.
Embodiment
As shown in Figure 2, the invention discloses a kind of plastic nut 1 of anti-skid teeth, the screw terminal of the tapped hole internal surface of this plastic nut 1 is provided with inclined-plane 2, and the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter.
Described inclined-plane 2 and the vertical surface of tapped hole internal surface are 2 to 4 spend angle.As preferred embodiment of the present invention, described inclined-plane 2 is 3 degree of angles with the vertical surface of tapped hole internal surface.
The screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 1 to 3 millimeter.As preferred embodiment of the present invention, the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 2 millimeters.
When internal thread does not increase inclined-plane 2, internal thread is after the screw-in of self threading pin, and screw terminal can produce distortion, and tapped hole becomes large, causes plastic nut 1 to occur loosening even sliding tooth.When internal thread increases inclined-plane 2, the screw thread of plastic nut 1 screw terminal is slightly less than the externally threaded diameter of self threading pin, when self threading pin screws in plastic nut 1, although the internal thread of plastic nut 1 is squeezed, after tightening by regulation moment, plastic nut 1 reaches standard measure by the form of reaming, and the frictional force between plastic nut 1 and self threading pin can increase, and the inclined-plane 2 of internal thread can reduce wear simultaneously, thus reach locking effect, ensure that the tightness of connection.
The invention provides a kind of for coordinating with self threading pin and the plastic nut 1 of anti-on-slip tooth, the frictional force that can effectively make plastic nut 1 still can keep being threaded under vibration, impact, variable load and larger temperature variation and pretightening force, avoid plastic nut 1 to occur loosening and sliding tooth, increase the Security of appended claims.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a plastic nut for anti-skid teeth, is characterized in that: the screw terminal of the tapped hole internal surface of this plastic nut is provided with inclined-plane, and the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter.
2. plastic nut according to claim 1, is characterized in that: the vertical surface of described inclined-plane and tapped hole internal surface is 2 to 4 spend angle.
3. plastic nut according to claim 2, is characterized in that: the vertical surface of described inclined-plane and tapped hole internal surface is 3 degree of angles.
4. plastic nut according to claim 1, is characterized in that: the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 1 to 3 millimeter.
5. plastic nut according to claim 4, is characterized in that: the screw terminal diameter of described tapped hole internal surface is less than self threading pin external thread diameter 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047023.2A CN104675832B (en) | 2015-01-30 | 2015-01-30 | The plastic nut of anti-skid teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047023.2A CN104675832B (en) | 2015-01-30 | 2015-01-30 | The plastic nut of anti-skid teeth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104675832A true CN104675832A (en) | 2015-06-03 |
| CN104675832B CN104675832B (en) | 2018-09-07 |
Family
ID=53311289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510047023.2A Active CN104675832B (en) | 2015-01-30 | 2015-01-30 | The plastic nut of anti-skid teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675832B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2788829A (en) * | 1955-05-04 | 1957-04-16 | Illinois Tool Works | Plastic nut having frusto-conical bore and locking portion |
| DE2505216A1 (en) * | 1975-02-05 | 1976-08-19 | Kronprinz Ag | Nut for self locking screw connection - has recess at base with plastic insert and plastic internal thread liner |
| GB1486647A (en) * | 1975-03-26 | 1977-09-21 | Murao M | Assembly of threaded fastening members and a locking member therefor |
| FR2454556A3 (en) * | 1979-04-18 | 1980-11-14 | Magister Fabrique | Locking for threaded rod and nut - uses flats at end of rod thread allowing it to be deformed by pinching action |
| CN2114724U (en) * | 1991-10-31 | 1992-09-02 | 那延伟 | Self-threading and self-lock high-strength nut |
| JP2004245322A (en) * | 2003-02-13 | 2004-09-02 | Sugiura Seisakusho Co Ltd | Combined anti-loosening structure of female screw part and male screw part, and male screw part structure for the same |
| JP2004306663A (en) * | 2003-04-02 | 2004-11-04 | Sakae Riken Kogyo Co Ltd | Shock absorbing structure of shift lever device |
| CN204572726U (en) * | 2015-01-30 | 2015-08-19 | 上汽通用五菱汽车股份有限公司 | The plastic nut of anti-skid teeth |
-
2015
- 2015-01-30 CN CN201510047023.2A patent/CN104675832B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2788829A (en) * | 1955-05-04 | 1957-04-16 | Illinois Tool Works | Plastic nut having frusto-conical bore and locking portion |
| DE2505216A1 (en) * | 1975-02-05 | 1976-08-19 | Kronprinz Ag | Nut for self locking screw connection - has recess at base with plastic insert and plastic internal thread liner |
| GB1486647A (en) * | 1975-03-26 | 1977-09-21 | Murao M | Assembly of threaded fastening members and a locking member therefor |
| FR2454556A3 (en) * | 1979-04-18 | 1980-11-14 | Magister Fabrique | Locking for threaded rod and nut - uses flats at end of rod thread allowing it to be deformed by pinching action |
| CN2114724U (en) * | 1991-10-31 | 1992-09-02 | 那延伟 | Self-threading and self-lock high-strength nut |
| JP2004245322A (en) * | 2003-02-13 | 2004-09-02 | Sugiura Seisakusho Co Ltd | Combined anti-loosening structure of female screw part and male screw part, and male screw part structure for the same |
| JP2004306663A (en) * | 2003-04-02 | 2004-11-04 | Sakae Riken Kogyo Co Ltd | Shock absorbing structure of shift lever device |
| CN204572726U (en) * | 2015-01-30 | 2015-08-19 | 上汽通用五菱汽车股份有限公司 | The plastic nut of anti-skid teeth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104675832B (en) | 2018-09-07 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |