CN109185316B - Extrusion formula fluting lock nut subassembly - Google Patents

Extrusion formula fluting lock nut subassembly Download PDF

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Publication number
CN109185316B
CN109185316B CN201811431581.9A CN201811431581A CN109185316B CN 109185316 B CN109185316 B CN 109185316B CN 201811431581 A CN201811431581 A CN 201811431581A CN 109185316 B CN109185316 B CN 109185316B
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China
Prior art keywords
nut
special
shaped section
section
locking
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CN201811431581.9A
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Chinese (zh)
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CN109185316A (en
Inventor
张亚晓
张晓斌
唐伟
徐飞
齐乐
徐国奇
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Aerospace Precision Products Co Ltd
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Aerospace Precision Products Co Ltd
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Priority to CN201811431581.9A priority Critical patent/CN109185316B/en
Publication of CN109185316A publication Critical patent/CN109185316A/en
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    • 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 OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/126Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
    • 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 OR WEDGES; JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • 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 OR WEDGES; JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
    • 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 OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24Locking 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
    • F16B39/26Locking 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

Abstract

The invention provides an extrusion type slotted locking nut component, which comprises an extrusion type slotted locking nut component, an extrusion type slotted locking nut component and a locking nut component, wherein the extrusion type slotted locking nut component comprises an inner nut and an outer nut; the center of the nut body of the inner nut is provided with a through hole with internal threads, and the outer surface of the through hole is provided with external threads coaxial with the internal threads; the tail part of the inner nut is provided with a special-shaped section, and the peripheral section of the special-shaped section is not a circle coaxial with the internal thread; the special-shaped section is internally provided with at least one slot from the end surface; the outer nut is provided with a second internal thread which can be matched and meshed with the external thread of the inner nut; the outer nut is provided with a locking section which can be sleeved on the special-shaped section of the inner nut, and the shortest through shaft inner diameter of the locking section is larger than the shortest through shaft outer diameter of the special-shaped section and smaller than the longest through shaft outer diameter of the special-shaped section. The invention has simple structure and is convenient to manufacture and install.

Description

Extrusion formula fluting lock nut subassembly
Technical Field
The invention relates to the technical field of fasteners, in particular to an extrusion type slotted lock nut assembly.
Background
The fastener is a mechanical part which is used for fastening connection and has wide application, and various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and the like. The purpose of the fastener is to fasten, and once the fastener loosens and falls off due to vibration, impact and the like, the device, machinery and the like can lose the functionality and the disassembly of the device, the machinery and the like, and even the personal safety is endangered. More than 80% of accidents of current mechanical equipment are caused by loosening of fasteners.
In order to avoid various problems caused by loosening of fasteners, technicians in various countries continuously research and develop methods for further improving product fastening, such as adding spring washers, pins, using double nuts and the like, products with loosening and vibration resisting effects, such as self-locking nuts, high-locking nuts and the like, are formed, but the risk of loosening still exists.
Disclosure of Invention
The invention aims to provide an extrusion type slotted locking nut assembly which is simple in structure and convenient to manufacture and install.
The extrusion type slotted locking nut component comprises an extrusion type slotted locking nut component, an extrusion type slotted locking nut component and a locking nut component, wherein the extrusion type slotted locking nut component comprises an inner nut and an outer nut; the center of the nut body of the inner nut is provided with a through hole with internal threads, and the outer surface of the through hole is provided with external threads coaxial with the internal threads; the tail part of the inner nut is provided with a special-shaped section, and the peripheral section of the special-shaped section is not a circle coaxial with the internal thread; the special-shaped section is internally provided with at least one slot from the end surface; the outer nut is provided with a second internal thread which can be matched and meshed with the external thread of the inner nut; the outer nut is provided with a locking section which can be sleeved on the special-shaped section of the inner nut, and the shortest through shaft inner diameter of the locking section is larger than the shortest through shaft outer diameter of the special-shaped section and smaller than the longest through shaft outer diameter of the special-shaped section.
Preferably, the peripheral section of the special-shaped section and the section of the inner hole of the locking section are both elliptical. The slot is arranged on the outer diameter of the shortest over shaft of the special-shaped section. When the peripheral section of the special-shaped section is oval, two slots are designed, and the slot bottom is in arc transition.
And a wrenching structure is arranged on the periphery of the inner nut.
And a wrenching mechanism is arranged on the periphery of the outer nut. The periphery of the outer nut is also provided with an appearance structure which can be in various forms such as a round table, a flange table, a countersunk head and the like.
The tail part of the inner nut is also sleeved with an elastic element, the elastic element can be limited by the outer nut, and the elastic element can apply elastic force towards the direction of the second internal thread to the outer nut.
According to the extrusion type slotted locking nut assembly provided by the invention, the special-shaped sections and the locking sections of the inner nut and the outer nut are designed, so that the rotating axial force is converted into the radial tightening force, the efficient and reliable locking effect can be achieved, the locking reliability is further improved by the design of the elastic element, and the loosening is effectively prevented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1-2 are schematic diagrams of the overall structure of the present invention.
Fig. 3-4 are schematic structural views of the inner nut.
Fig. 5-7 are schematic structural views of the outer nut.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The extrusion type slotted locking nut component provided by the invention, as shown in figures 1-2, comprises an inner nut 1 (figures 3-4) and an outer nut 2 (figures 5-7); the center of the nut body of the inner nut 1 is provided with a through hole with an internal thread 11, and the outer surface of the through hole is provided with an external thread 13 which is coaxial with the internal thread 11; the tail part of the inner nut 1 is provided with a special-shaped section 12, and the peripheral section of the special-shaped section 12 is not a circle coaxial with the internal thread 11; the special-shaped section 12 is provided with at least one open slot 15 from the end surface inwards; the outer nut 2 is provided with a second internal thread 22 which can be matched and meshed with the external thread 13 of the inner nut 1; the outer nut 2 is provided with a locking section 21 capable of being sleeved on the special-shaped section 12 of the inner nut 1, and the shortest through-shaft inner diameter dimension of the locking section 21 (namely, the smallest dimension of all through-shaft diameters on the inner hole section of the locking section 21) is larger than the shortest through-shaft outer diameter dimension of the special-shaped section 12 (namely, the smallest dimension of all through-shaft diameters on the outer peripheral section of the special-shaped section 12) and is smaller than the longest through-shaft outer diameter dimension of the special-shaped section 12 (namely, the largest dimension of all through-shaft diameters on the outer peripheral section of the special-shaped section 12).
According to the invention, through the size design of the special-shaped section 12 and the locking section 21, after the locking section 21 is sleeved on the special-shaped section 12, the radial inward tightening force can be applied to the special-shaped section 12 through rotation, so that the special-shaped section 12 can be tightened inwards, only the bolt rod part matched with the special-shaped section 12 is clasped, and the effect of strengthening locking is achieved. The tightening force is generated by converting the rotating axial force into the radial force, is more efficient than directly applying the radial force, and is continuously reliable.
Preferably, the outer peripheral section of the special-shaped section 12 and the inner hole section of the locking section 21 are both oval, which is beneficial to better playing the locking role. The slot 15 is arranged on the shortest over-shaft outer diameter of the special-shaped section 12, and the design enables the torque of the axial force to be maximum and the efficiency of the radial tightening force to be highest. When the peripheral section of the special-shaped section 12 is oval, two open grooves 15 are designed, and the groove bottom is in arc transition.
The periphery of the inner nut 1 is also provided with a wrenching structure 14 which is convenient for clamping and fixing the inner nut 1 during installation, and the wrenching structure includes but is not limited to the forms of square, hexagonal, dodecagonal and the like.
The outer nut 2 is provided with a wrenching mechanism 23 (which has the same function as the wrenching structure 14, and the name is distinguished here), so as to facilitate the clamping and fixing of the outer nut 2 during installation, and the wrenching structure includes but is not limited to a square, a hexagonal, a dodecagonal and other forms. The outer periphery of the outer nut 2 is also provided with an appearance structure 24 which can be in various forms such as a round table, a flange table, a countersunk head and the like, and the purpose is to improve the rigidity of the outer nut 2.
The tail part of the inner nut 1 is further sleeved with an elastic element 3, the elastic element 3 can be limited by the outer nut 2 (generally limited by the end surface of the outer nut 2), and the elastic element 3 can apply an elastic force towards the direction of the second internal thread 22 to the outer nut 2. An illustrative example of the elastic element 3 is a spring. The elastic element 3 can prevent the outer nut 2 from whirling and loosening due to vibration and the like, and the elastic element 3 is in a compressed state and plays a role in preventing the inner nut 1 from loosening and reinforcing the locking performance of the inner nut 1, so that the combined nut can further effectively prevent loosening.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (3)

1. A locking nut assembly comprising an extruded slotted locking nut assembly comprising an inner nut (1) and an outer nut (2); the center of the nut body of the inner nut (1) is provided with a through hole with an internal thread (11), and the outer surface of the inner nut is provided with an external thread (13) which is coaxial with the internal thread (11); the tail part of the inner nut (1) is provided with a special-shaped section (12), and the peripheral section of the special-shaped section (12) is not a circle coaxial with the internal thread (11); the special-shaped section (12) is provided with at least one slot (15) from the end surface inwards; the outer nut (2) is provided with a second internal thread (22) which can be matched and meshed with the external thread (13) of the inner nut (1); the outer nut (2) is provided with a locking section (21) which can be sleeved on the special-shaped section (12) of the inner nut (1), and the shortest through-shaft inner diameter of the locking section (21) is larger than the shortest through-shaft outer diameter of the special-shaped section (12) and smaller than the longest through-shaft outer diameter of the special-shaped section (12); the peripheral section of the special-shaped section (12) and the section of an inner hole of the locking section (21) are both elliptical; the tail part of the inner nut (1) is further sleeved with an elastic element (3), the elastic element (3) can be limited by the outer nut (2), and the elastic element (3) can apply elastic force towards the direction of the second internal thread (22) to the outer nut (2); the slot (15) is arranged on the shortest over-shaft outer diameter of the special-shaped section (12).
2. The cage nut assembly of claim 1 characterized in that the two slots (15) are designed with a rounded transition of the slot bottom.
3. Lock nut assembly according to claim 1, characterized in that the inner nut (1) is further provided with a wrenching structure (14) at its periphery, the outer nut (2) is provided with a wrenching mechanism (23) at its periphery and the outer nut (2) is further provided with a profile structure (24) at its periphery.
CN201811431581.9A 2018-11-23 2018-11-23 Extrusion formula fluting lock nut subassembly Active CN109185316B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811431581.9A CN109185316B (en) 2018-11-23 2018-11-23 Extrusion formula fluting lock nut subassembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811431581.9A CN109185316B (en) 2018-11-23 2018-11-23 Extrusion formula fluting lock nut subassembly

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CN109185316B true CN109185316B (en) 2020-08-04

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307240B (en) * 2019-07-02 2021-03-05 海盐华昇汽配科技股份有限公司 Convenient to use's locking antitheft nut

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150002059A (en) * 2013-06-28 2015-01-07 오창환 Engagement unit having bolt and nut structure
CN106246699A (en) * 2016-08-10 2016-12-21 张树永 Electric power and electrification railway contact net Special Eccentric wedge type is locking holds nut tightly
CN206478093U (en) * 2017-01-21 2017-09-08 深圳市金达来精密科技股份有限公司 A kind of locking fastening combination nut
CN107725565A (en) * 2017-10-17 2018-02-23 韩魁 A kind of automatic locking nut
CN207814175U (en) * 2017-12-27 2018-09-04 朗福紧固科技(西安)有限公司 A kind of nut that is locked of slotting

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7207741B2 (en) * 2004-09-30 2007-04-24 Reliance Electric Technologies, Llc Bushing system for power transmission products
CN203272396U (en) * 2013-05-06 2013-11-06 邵祥顺 Locking nut
CN203743167U (en) * 2014-01-08 2014-07-30 河南航天精工制造有限公司 Self-locking nut
CN106151235B (en) * 2016-06-17 2018-03-23 浙江吉利罗佑发动机有限公司 A kind of gas extraction system installs nut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150002059A (en) * 2013-06-28 2015-01-07 오창환 Engagement unit having bolt and nut structure
CN106246699A (en) * 2016-08-10 2016-12-21 张树永 Electric power and electrification railway contact net Special Eccentric wedge type is locking holds nut tightly
CN206478093U (en) * 2017-01-21 2017-09-08 深圳市金达来精密科技股份有限公司 A kind of locking fastening combination nut
CN107725565A (en) * 2017-10-17 2018-02-23 韩魁 A kind of automatic locking nut
CN207814175U (en) * 2017-12-27 2018-09-04 朗福紧固科技(西安)有限公司 A kind of nut that is locked of slotting

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