CN220910211U - Locking screw fastener that moves - Google Patents

Locking screw fastener that moves Download PDF

Info

Publication number
CN220910211U
CN220910211U CN202323025652.4U CN202323025652U CN220910211U CN 220910211 U CN220910211 U CN 220910211U CN 202323025652 U CN202323025652 U CN 202323025652U CN 220910211 U CN220910211 U CN 220910211U
Authority
CN
China
Prior art keywords
nut
occlusal surface
stud
screw fastener
loosening
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.)
Active
Application number
CN202323025652.4U
Other languages
Chinese (zh)
Inventor
郑景
吴海川
郑兆裕
莱容
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.)
Chongqing Minlong Machinery Manufacturing Co ltd
Original Assignee
Chongqing Minlong Machinery Manufacturing Co ltd
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 Chongqing Minlong Machinery Manufacturing Co ltd filed Critical Chongqing Minlong Machinery Manufacturing Co ltd
Priority to CN202323025652.4U priority Critical patent/CN220910211U/en
Application granted granted Critical
Publication of CN220910211U publication Critical patent/CN220910211U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Bolts, Nuts, And Washers (AREA)

Abstract

The utility model discloses an anti-loosening screw fastener which comprises a bolt, a first nut and a second nut, wherein an upper stud and a lower stud are arranged on the bolt, the diameter of the upper stud is larger than that of the lower stud, the directions of threads of the upper stud and the lower stud are opposite, the first nut is in threaded fit with the upper stud, the second nut is in threaded fit with the lower stud, a first occlusal surface is arranged below the second nut, a second occlusal surface is arranged above the second nut, and the first occlusal surface and the second occlusal surface are mutually matched; according to the utility model, the first nut and the second nut are matched with each other, and the first occlusal surface and the second occlusal surface are matched with each other, so that when the first nut or the second nut is loosened due to vibration, the loosening direction of the first nut is the fastening direction of the second nut, and the loosening direction of the second nut is the fastening direction of the first nut, thereby preventing the first nut and the second nut from loosening, and further realizing the anti-loosening effect.

Description

Locking screw fastener that moves
Technical Field
The utility model relates to the field of screw fasteners, in particular to an anti-loosening screw fastener.
Background
Screw fasteners, also known as threaded fasteners, are a type of mechanical element used to attach and secure two or more objects; screw fasteners typically comprise a threaded bolt with external threads and a threaded nut with internal threads. Screw fasteners are used on almost all existing mechanical devices.
The existing screw fastener can loosen or even fall off due to vibration and the like after being installed, so that a large potential safety hazard exists, and the self-locking capability between the bolt and the nut in a vibration environment, a strong motion environment and other special environments is insufficient to maintain the fastening.
Disclosure of utility model
The utility model aims to solve the technical problems and provides an anti-loosening screw fastener.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
The anti-loosening screw fastener comprises a bolt, a first nut and a second nut, wherein an upper stud and a lower stud are arranged on the bolt, the directions of threads of the upper stud and the lower stud are opposite, the first nut is in threaded fit with the upper stud, the second nut is in threaded fit with the lower stud, a first occlusal surface is arranged below the first nut, a second occlusal surface is arranged above the second nut, and the first occlusal surface and the second occlusal surface are mutually matched.
As an improvement, the diameter of the upper stud is longer than that of the lower stud, and the upper stud and the lower stud are integrally connected.
As improvement, a plurality of wedges are arranged on the first occlusal surface and the second occlusal surface, and the shapes and the numbers of the wedges on the first occlusal surface and the wedges on the second occlusal surface are the same.
As an improvement, the inclined direction of the wedge block inclined surface on the first nut is the same as the inclined direction of the screw thread of the upper stud, and the inclined direction of the wedge block inclined surface on the second nut is the same as the inclined direction of the screw thread of the lower stud.
As an improvement, the inner diameter of the first occlusal surface and the second occlusal surface is larger than the outer diameter of the upper stud.
As improvement, a connecting cylinder is arranged between the second occlusal surface and the second nut, and the inner diameter of the connecting cylinder is the same as that of the second occlusal surface.
As an improvement, the first nut, the first occlusal surface and the wedge block are integrally connected, and the second nut, the connecting cylinder, the second occlusal surface and the wedge block are integrally connected.
Compared with the prior art, the utility model has the advantages that:
Through mutually supporting between first and second nuts and interlock face one and interlock face two, when nut one or nut two will take place not hard up because of vibrations, the not hard up direction of nut one is the fastening direction of nut two, and the same reason, the not hard up direction of nut two is the fastening direction of nut one to prevented not hard up of nut one and nut two, and then realized the effect of preventing not hard up.
Drawings
Fig. 1 is a schematic view of a loosening prevention screw fastener according to the present utility model.
Fig. 2 is a cross-sectional view of a loosening-preventing screw fastener of the present utility model.
Fig. 3 is a disassembled view of a loosening prevention screw fastener of the present utility model.
Fig. 4 is a cross-sectional view of a first nut and a second nut of a loosening prevention screw fastener of the present utility model.
As shown in the figure: 1. a bolt; 11. a stud is arranged; 12. a lower stud; 2. a first nut; 21. the first occlusal surface; 3. a second nut; 31. a second occlusal surface; 32. a connecting cylinder; 4. wedge blocks.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-4, an anti-loosening screw fastener comprises a bolt 1, a first nut 2 and a second nut 3, wherein the head direction of the bolt 1 is defined as the upper direction, an upper stud 11 and a lower stud 12 are arranged on the bolt 1, the diameter of the upper stud 11 is longer than that of the lower stud 12, the upper stud 11 and the lower stud 12 are integrally connected, the thread directions of the upper stud 11 and the lower stud 12 are opposite, the first nut 2 is in threaded fit with the upper stud 11, the second nut 3 is in threaded fit with the lower stud 12, a first meshing surface 21 is arranged below the first nut 2, a second meshing surface 31 is arranged above the second nut 3, the first meshing surface 21 and the second meshing surface 31 are mutually matched, the first nut 2 can be screwed onto the upper stud 11 through threaded fit, the second nut 3 can be screwed onto the lower stud 12, and when the two nuts are completely screwed, the two meshing surfaces are mutually matched to achieve an anti-loosening effect.
The first and second engaging surfaces 21 and 31 are respectively provided with a plurality of wedges 4, the shapes and numbers of the wedges 4 positioned on the first engaging surface 21 and the wedges 4 positioned on the second engaging surface 31 are the same, the inclined direction of the wedges 4 on the first nut 2 is the same as the inclined direction of the threads of the upper stud 11, the inclined direction of the wedges 4 on the second nut 3 is the same as the inclined direction of the threads of the lower stud 12, when the two nuts are screwed down, the rotation moving direction of the wedges 4 is from the flat end to the tip end of the wedges 4, the wedges 4 on the two nuts can be mutually matched, but when the two nuts are loosened, the rotation direction of the wedges 4 is from the flat end to the tip end, the flat ends of the wedges 4 are mutually clamped, the inner diameters of the first engaging surface 21 and the second engaging surface 31 are larger than the outer diameter of the upper stud 11, a connecting cylinder 32 is arranged between the first engaging surface 31 and the second nut 3, the inner diameter of the connecting cylinder 32 is the same as the inner diameter of the second stud 31, the first nut 2, the first engaging surface 21 and the wedges 4 are integrally connected, the second nut 3, and the second engaging surface 31 are integrally connected, and the first engaging surface 31 and the second engaging surface and the wedge 4 are integrally connected.
The working principle of the utility model is as follows:
After the bolt 1 passes through the position required to be fixedly connected, the first nut 2 is screwed onto the upper stud 11 in the downward direction of the first meshing surface 21, after the first nut 2 is screwed, the second nut 3 is screwed onto the lower stud 12 in the upward direction of the second meshing surface 31, after the second nut 3 is screwed, the first meshing surface 21 and the second meshing surface 31 are opposite, at the moment, the inclined surfaces of the wedge blocks 4 positioned on the two meshing surfaces are opposite, the wedge blocks 4 positioned on the first meshing surface 21 rotate from the cross section to the tip when the first nut 2 is fastened, the wedge blocks 4 positioned on the second meshing surface 31 also rotate from the cross section to the tip when the second nut 3 is fastened, so that the wedge blocks 4 can not block the rotation of the first nut 2 and the second nut 3 when the first nut 2 and the second nut 3 are fastened, and the cross sections of the wedge blocks 4 positioned on the two nuts are mutually matched when vibration or other reasons occur to loosen the first nut 2 and the second nut 3, so that the loosening direction of the second nut 3 is the tightening direction of the first nut 2 under the action of the wedge blocks 4, and the loosening of the second nut 2 is prevented when the first nut 3 and the loosening of the second nut 2 are mutually matched.
The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (7)

1. The utility model provides a locking screw fastener that moves, includes bolt (1), nut one (2) and nut two (3), its characterized in that: the novel bolt is characterized in that an upper stud (11) and a lower stud (12) are arranged on the bolt (1), the threaded directions of the upper stud (11) and the threaded direction of the lower stud (12) are opposite, the first nut (2) is in threaded fit with the upper stud (11), the second nut (3) is in threaded fit with the lower stud (12), a first occlusal surface (21) is arranged below the first nut (2), a second occlusal surface (31) is arranged above the second nut (3), and the first occlusal surface (21) and the second occlusal surface (31) are mutually matched.
2. A loosening preventing screw fastener as claimed in claim 1, wherein: the diameter of the upper stud (11) is longer than that of the lower stud (12), and the upper stud (11) and the lower stud (12) are integrally connected.
3. A loosening preventing screw fastener as claimed in claim 1, wherein: a plurality of wedges (4) are arranged on the first occlusal surface (21) and the second occlusal surface (31), and the shapes and the numbers of the wedges (4) on the first occlusal surface (21) and the wedges (4) on the second occlusal surface (31) are the same.
4. A loosening preventing screw fastener as claimed in claim 2, wherein: the inclined direction of the inclined surface of the wedge block (4) on the first nut (2) is the same as the inclined direction of the screw thread of the upper stud (11), and the inclined direction of the inclined surface of the wedge block (4) on the second nut (3) is the same as the inclined direction of the screw thread of the lower stud (12).
5. A loosening preventing screw fastener as claimed in claim 1, wherein: the inner diameters of the first occlusal surface (21) and the second occlusal surface (31) are larger than the outer diameter of the upper stud (11).
6. A loosening preventing screw fastener as claimed in claim 4, wherein: a connecting cylinder (32) is arranged between the second occluding surface (31) and the second nut (3), and the inner diameter of the connecting cylinder (32) is the same as that of the second occluding surface (31).
7. A loosening preventing screw fastener as claimed in claim 2 or 5, wherein: the nut I (2), the occlusal surface I (21) and the wedge block (4) are integrally connected, and the nut II (3), the connecting cylinder (32), the occlusal surface II (31) and the wedge block (4) are integrally connected.
CN202323025652.4U 2023-11-09 2023-11-09 Locking screw fastener that moves Active CN220910211U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202323025652.4U CN220910211U (en) 2023-11-09 2023-11-09 Locking screw fastener that moves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202323025652.4U CN220910211U (en) 2023-11-09 2023-11-09 Locking screw fastener that moves

Publications (1)

Publication Number Publication Date
CN220910211U true CN220910211U (en) 2024-05-07

Family

ID=90905254

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202323025652.4U Active CN220910211U (en) 2023-11-09 2023-11-09 Locking screw fastener that moves

Country Status (1)

Country Link
CN (1) CN220910211U (en)

Similar Documents

Publication Publication Date Title
CN202118079U (en) Anti-loosening structure for thread connection
CN113669351A (en) Anti-loosening thread pair
CN209586915U (en) Tilt cambered surface flange nut, bolt and its bolt and nut component
CN110608225A (en) Can realize from anti vibration check bolt subassembly of locking-type
CN220910211U (en) Locking screw fastener that moves
CN108561399A (en) A kind of anti-loosing fixing device
CN210484360U (en) Never-loosening screw assembly
CN210068710U (en) Sleeve locking loose-proof nut
CN112594273A (en) Eccentric locking cap of transmission tower bolt
CN109404397A (en) Anti-loosening nut
CN204213146U (en) A kind of Anti-loosening nut
CN216788961U (en) Double-nut self-locking check bolt
CN214247952U (en) Anti-loose nut
CN209262013U (en) Anti-loosening nut
CN112780657A (en) Double-thread anti-loose bolt
CN203477010U (en) Anti-slip anti-loosening bolt structure
CN203548520U (en) Fast-tapping and loosening-prevention stud
CN111120494A (en) Locknut structure with screw pitch difference
CN214146210U (en) Integrated lock nut pump body
CN216009204U (en) Mutual exclusion type anti-loosening bolt and nut
CN221278228U (en) Anti-loosening thread structure
CN219413179U (en) Anti-loose hexagonal bolt
CN219587943U (en) Lock bolt for connecting electric iron tower
CN215370557U (en) Double-thread anti-loose bolt
CN109737132A (en) Tilt cambered surface flange nut, bolt and its bolt and nut component

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant