CN111577736A - Bolt and nut assembly - Google Patents

Bolt and nut assembly Download PDF

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Publication number
CN111577736A
CN111577736A CN202010474627.6A CN202010474627A CN111577736A CN 111577736 A CN111577736 A CN 111577736A CN 202010474627 A CN202010474627 A CN 202010474627A CN 111577736 A CN111577736 A CN 111577736A
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CN
China
Prior art keywords
threaded rod
nut
thread
bolt
threaded
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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.)
Pending
Application number
CN202010474627.6A
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Chinese (zh)
Inventor
陶金波
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Individual
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Individual
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Publication date
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Priority to CN202010474627.6A priority Critical patent/CN111577736A/en
Publication of CN111577736A publication Critical patent/CN111577736A/en
Pending legal-status Critical Current

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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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The embodiment of the invention provides a bolt and nut assembly, and relates to the technical field of mechanical fastening. The bolt-nut assembly comprises a bolt body, a fastener, a first lock nut and a second lock nut. The bolt body comprises a main threaded rod and a secondary threaded rod; the threaded hole of the second locking nut is in threaded fit connection with the thread of the main threaded rod; the fastener is concavely provided with a reserved groove, the bottom of the reserved groove is provided with a through avoidance hole, the secondary threaded rod penetrates through and extends out of the avoidance hole, the end face of the fastener at the opening of the reserved groove is abutted against the second locking nut, and the reserved groove is in a hollow state; and the threaded hole of the first locking nut is in threaded fit connection with the thread of the secondary threaded rod. Locking fastener between second lock nut and the first lock nut when the retaining member receives the extrusion for the strong elasticity of retaining member is bounce-back to force bolt body, second lock nut, fastener, first lock nut to connect for more firm overall structure, thereby reach the technological effect who prevents not hard up.

Description

Bolt and nut assembly
Technical Field
The embodiment of the invention relates to the technical field of mechanical fastening, in particular to a bolt and nut assembly.
Background
The bolt and the nut are mechanical parts, and the bolt and the nut can be used for fixedly connecting a plurality of parts in a matching mode, and the connection mode is called bolt connection.
Bolt connection is widely applied to machine equipment, however, when the bolt nut assembly in the prior art is assembled on a machine, looseness easily occurs between a bolt and a nut in the long-time operation process of the machine, so that parts on the machine are not stable.
Disclosure of Invention
The embodiment of the invention aims to provide a bolt and nut assembly, which can solve the technical problem that the bolt and nut assembly in the prior art is easy to loosen in the using process.
The embodiment of the invention adopts the following technical scheme:
a bolt-nut assembly comprising:
the bolt body comprises a main threaded rod and a secondary threaded rod, wherein threads are arranged on the outer side of the main threaded rod, the secondary threaded rod extends outwards from one end of the main threaded rod, and the threads are arranged on the outer side of the secondary threaded rod;
the first locking nut is provided with a threaded hole;
the second locking nut is provided with a threaded hole, and the threaded hole of the second locking nut is in threaded fit connection with the thread of the main threaded rod;
the fastener, the fastener is sunken to be equipped with the reservation groove, the hole of dodging that link up is seted up to the bottom of reservation groove, the opening orientation of reservation groove second lock nut, time threaded rod passes and stretches out dodge the hole, and reservation groove opening part the fastener terminal surface with second lock nut supports and holds, the reservation groove is the cavity state:
and the threaded hole of the first locking nut is in threaded fit connection with the thread of the secondary threaded rod.
Optionally, the primary threaded rod is cylindrical, a thread extends spirally along the length direction of the primary threaded rod, and the secondary threaded rod extends outwards at one end of the primary threaded rod in the length direction; the secondary threaded rod is cylindrical, and threads spirally extend along the length direction of the secondary threaded rod.
Optionally, one end of the primary threaded rod, which is far away from the secondary threaded rod, extends to be provided with a bolt cap, and the bolt cap, the primary threaded rod and the secondary threaded rod are integrally formed.
Optionally, the helical direction of the thread on the primary threaded rod is opposite to the helical direction of the thread on the secondary threaded rod.
Optionally, the pitch of the thread on the primary threaded rod is different from the pitch of the thread on the secondary threaded rod.
Optionally, the fastening member is a cover-shaped structure, and the preformed groove is concavely arranged along the length direction of the fastening member from one end surface of the fastening member.
Optionally, the opening of the preformed groove is provided with threads, an annular boss is convexly arranged on one side of the second locking nut, threads are arranged on the outer side surface of the annular boss, and the threads located on the annular boss are in threaded fit connection with the threads located at the opening of the preformed groove.
Optionally, the thread diameter of the secondary threaded rod is smaller than the thread diameter of the primary threaded rod, the aperture of the relief hole is larger than the thread diameter of the secondary threaded rod, and the aperture of the relief hole is smaller than the thread diameter of the primary threaded rod.
Optionally, the first locking nut is provided with one or more through holes, and correspondingly, the fastener is provided with locking holes corresponding to the through holes; the bolt and nut assembly further comprises one or more fastening screws, and the fastening screws penetrate through the through holes and are in threaded fit connection with the locking holes.
Optionally, the bolt-nut assembly further comprises a first clamping nut and a second clamping nut; the first clamping nut is in threaded fit connection with the main threaded rod, threads are arranged on the outer side surface of the second locking nut, the second clamping nut is in threaded fit connection with the outer side surface of the second locking nut, and the first clamping nut and the second clamping nut are abutted and fixed.
Compared with the prior art, in the bolt nut subassembly of this embodiment, the bolt body is including linking main threaded rod and the secondary threaded rod that sets up as an organic whole. The screw hole of second lock nut with be located the screw thread of main threaded rod carries out screw-thread fit connection, the opening orientation of reservation groove second lock nut, inferior threaded rod passes and stretches out dodge the hole, and reservation groove opening part the fastener terminal surface with second lock nut supports and holds, the reservation groove is the cavity state, first lock nut's screw hole with be located the screw thread of inferior threaded rod carries out screw-thread fit connection. So, second lock nut with lock between the first lock nut the fastener is located in the fastener reserve the groove is the cavity state the retaining member makes when receiving the extrusion the strong elasticity of retaining member is rebounded, in order to force the bolt body the second lock nut the fastener first lock nut connects for more firm overall structure, thereby reaches the technological effect that prevents to become flexible.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic structural view of a bolt and nut assembly according to one embodiment of the present invention;
FIG. 2 is a schematic structural view of a bolt and nut assembly according to another embodiment of the present invention;
FIG. 3 is a schematic structural view of the first lock nut shown in FIG. 2;
fig. 4 is a schematic structural diagram of a bolt and nut assembly according to yet another embodiment of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1-4, an embodiment of the present invention provides a bolt-nut assembly 100 with anti-loosening function, in which the components of the bolt-nut assembly 100 are connected with each other in a matching manner, so that the bolt-nut assembly 100 has strong stability.
Referring to fig. 1, the bolt-nut assembly 100 includes a bolt body 10, a fastener 20, a first lock nut 30, and a second lock nut 40. Bolt body 10 is the metal material, bolt body 10 includes main threaded rod 11 and secondary threaded rod 12, wherein, main threaded rod 11 is cylindrically the outside of main threaded rod 11 is provided with the edge 11 length direction spiral extension's of main threaded rod screw rod length direction ascending one end outwards extend has secondary threaded rod 12. The secondary threaded rod 12 is cylindrical, and threads spirally extending along the length direction of the secondary threaded rod 12 are arranged on the outer side of the secondary threaded rod 12, wherein the thread diameter of the secondary threaded rod 12 is smaller than that of the primary threaded rod 11. Further, a bolt cap 13 is extended from one end of the primary threaded rod 11 away from the secondary threaded rod 12, for example, the bolt body 10 is a hexagon bolt, that is, the cross section of the bolt cap 13 is a regular hexagon. Optionally, the bolt cap 13, the primary threaded rod 11 and the secondary threaded rod 12 are integrally formed, and can be formed by one-step casting through a casting process.
Wherein the screw direction of the screw thread of the primary screw rod 11 is opposite to the screw direction of the screw thread of the secondary screw rod 12. And/or the pitch of the thread of the primary threaded rod 11 is different from the pitch of the thread of the secondary threaded rod 12, for example, the pitch of the thread of the primary threaded rod 11 is greater than the pitch of the thread of the secondary threaded rod 12, or the pitch of the thread of the primary threaded rod 11 is less than the pitch of the thread of the secondary threaded rod 12.
In other embodiments, the screw direction of the thread of the primary threaded rod 11 is opposite to the screw direction of the thread of the secondary threaded rod 12, the pitch of the thread of the primary threaded rod 11 is the same as the pitch of the thread of the secondary threaded rod 12, or the screw direction of the thread of the primary threaded rod 11 is the same as the screw direction of the thread of the secondary threaded rod 12, and the pitch of the thread of the primary threaded rod 11 is different from the pitch of the thread of the secondary threaded rod 12.
In this embodiment, the second lock nut 40 is made of a metal material, the second lock nut 40 is provided with a threaded hole, and optionally, a through threaded hole is formed in the middle of the second lock nut 40. The threaded hole of the second lock nut 40 is in threaded fit connection with the thread of the main threaded rod 11, so that the second lock nut 40 is sleeved on the main threaded rod 11.
The fastening member 20 is made of metal, the fastening member 20 is in a cover-shaped structure, the outer contour of the fastening member 20 is in a regular geometric figure, for example, the cross section of the fastening member 20 is in a regular hexagon or a circle. From an end face of the fastening piece 20, a preformed groove 21 is concavely arranged along the length direction of the fastening piece 20, an opening of the preformed groove 21 faces the second locking nut 40, the end face of the fastening piece 20 at the opening of the preformed groove 21 is abutted against the second locking nut 40, and the preformed groove 21 is in a hollow state. In this embodiment, the preformed groove 21 is cylindrical, a thread is arranged at an opening of the preformed groove 21, an annular boss 41 is convexly arranged at one side of the second lock nut 40, and a thread is arranged on the outer side surface of the annular boss 41. The thread on the annular boss 41 is in threaded fit connection with the thread on the opening of the preformed groove 21. The bottom of reservation groove 21 is seted up the hole of dodging 22 that link up, the aperture ratio of dodging hole 22 the diameter of thread of secondary threaded rod 12 is big, and the aperture ratio of dodging hole 22 the diameter of thread of main threaded rod 11 is little, so that secondary threaded rod 12 can pass dodge hole 22, and dodge hole 22 and hinder main threaded rod 11 passes, thereby fastener 20 can block bolt body 10 further to secondary threaded rod 12 one side removes, wherein, the terminal surface of main threaded rod 11 supports and holds the bottom of reservation groove 21.
In other embodiments, the relief hole 22 is provided with threads, and the relief hole 22 is in threaded fit connection with the secondary threaded rod 12.
The first locking nut 30 is made of metal, a threaded hole is formed in the first locking nut 30, and the threaded hole of the first locking nut 30 is in threaded fit connection with a thread located on the secondary threaded rod 12. Second lock nut 40 screw in main threaded rod 11 inferior threaded rod 12 passes and stretches out dodge hole 22, the screw thread of preformed groove 21 opening part with the screw thread cooperation of annular boss 41 is connected, and fastener 20 with second lock nut 40 butt, first lock nut 30 screw in inferior threaded rod 12, thereby will bolt body 10 second lock nut 40 fastener 20 first lock nut 30 is connected into an overall structure, so that bolt-nut subassembly 100 has stronger steadiness, reaches the technological effect that prevents to become flexible.
Further, referring to fig. 2-3, the first locking nut 30 is formed with one or more through holes 31, and accordingly, the fastening member 20 is formed with locking holes 23 corresponding to positions of the one or more through holes 31. The bolt-nut assembly 100 further includes one or more fastening screws 50, and the fastening screws 50 pass through the through holes 31 and are in threaded engagement with the locking holes 23 to enhance the firmness between the first locking nut 30 and the fastening member 20. Optionally, the first locking nut 30 is a hexagon nut, a threaded hole in threaded fit connection with the secondary threaded rod 12 is formed in the middle of the first locking nut 30, and if the through holes 31 are multiple, the through holes 31 are uniformly distributed along the circumference of the threaded hole of the first locking nut 30.
Further, referring to fig. 4, the bolt-nut assembly 100 further includes a first clamping nut 61 and a second clamping nut 62. The first clamping nut 61 is in threaded fit connection with the main threaded rod 11, threads are arranged on the outer side surface of the second locking nut 40, and the second clamping nut 62 is in threaded fit connection with the outer side surface of the second locking nut 40. The first clamping nut 61 is screwed into the main threaded rod 11 (i.e. the first clamping nut 61 is in thread fit connection with the main threaded rod 11), the second clamping nut 62 is in thread fit connection with the outer side surface of the second lock nut 40, and the first clamping nut 61 and the second clamping nut 62 are fixed in a butting manner, so that the stability of the bolt-nut assembly 100 is enhanced.
In the present embodiment, a method for using the bolt-nut assembly 100 is provided, as follows:
first clamping nut 61 screw in main threaded rod 11, second lock nut 40 screw in main threaded rod 11 inferior threaded rod 12 passes and stretches out dodge hole 22, the screw thread of preformed groove 21 opening part with the screw thread cooperation of annular boss 41 is connected, and fastener 20 with second lock nut 40 butt, first locking nut 30 screw in inferior threaded rod 12, second clamping nut 62 screw in second lock nut 40, promptly second clamping nut 62 with the screw thread of second lock nut 40 outside surface carries out screw-thread fit and is connected, and first clamping nut 61 with it is fixed to support between the second clamping nut 62. In this embodiment, when the bolt body 10 is loosened abnormally, the fastening member 20 is more strongly locked between the second lock nut 40 and the first lock nut 30 because the screw direction of the screw thread of the primary threaded rod 11 is opposite to the screw direction of the screw thread of the secondary threaded rod 12, or the screw pitch of the screw thread of the primary threaded rod 11 is different from the screw pitch of the screw thread of the secondary threaded rod 12. Simultaneously, be located in the fastener 20 reserve groove 21 is the cavity state the retaining member is when receiving the extrusion, makes the strong elasticity of retaining member is bounce-back to force bolt body 10 second lock nut 40 fastener 20 first lock nut 30 connects into more firm overall structure, thereby reaches the technological effect that prevents to become flexible.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A bolt and nut assembly, comprising:
the bolt body comprises a main threaded rod and a secondary threaded rod, wherein threads are arranged on the outer side of the main threaded rod, the secondary threaded rod extends outwards from one end of the main threaded rod, and the threads are arranged on the outer side of the secondary threaded rod;
the first locking nut is provided with a threaded hole;
the second locking nut is provided with a threaded hole, and the threaded hole of the second locking nut is in threaded fit connection with the thread of the main threaded rod;
the fastener is concavely provided with a reserved groove, the bottom of the reserved groove is provided with a through avoidance hole, the opening of the reserved groove faces to the second locking nut, the secondary threaded rod penetrates through and extends out of the avoidance hole, the end face of the fastener at the opening of the reserved groove abuts against the second locking nut, and the reserved groove is in a hollow state;
and the threaded hole of the first locking nut is in threaded fit connection with the thread of the secondary threaded rod.
2. The bolt nut assembly defined in claim 1, wherein said primary threaded shaft is cylindrical, has threads extending helically along a length of said primary threaded shaft, and has said secondary threaded shaft extending outwardly at one end of said threaded shaft in a length direction; the secondary threaded rod is cylindrical, and threads spirally extend along the length direction of the secondary threaded rod.
3. The bolt-nut assembly defined in claim 2, wherein the end of the primary threaded shaft remote from the secondary threaded shaft extends with a bolt cap, the primary threaded shaft and the secondary threaded shaft being integrally formed.
4. The bolt-nut assembly defined in claim 1, wherein the helical direction of the thread on the primary threaded shaft is opposite to the helical direction of the thread on the secondary threaded shaft.
5. The bolt nut assembly defined in claim 1, wherein the pitch of the thread on the primary threaded shaft is different from the pitch of the thread on the secondary threaded shaft.
6. The bolt nut assembly defined in claim 1, wherein said fastener is a cap-like structure having said pre-groove recessed along a length of said fastener from an end surface of said fastener.
7. The bolt nut assembly of claim 6, characterized in that the opening of the preformed groove is provided with a thread, one side of the second lock nut is convexly provided with an annular boss, the outer side surface of the annular boss is provided with a thread, and the thread on the annular boss is in thread fit connection with the thread on the opening of the preformed groove.
8. The bolt-nut assembly according to claim 1, wherein the thread diameter of the secondary threaded rod is smaller than the thread diameter of the primary threaded rod, the aperture of the avoiding hole is larger than the thread diameter of the secondary threaded rod, and the aperture of the avoiding hole is smaller than the thread diameter of the primary threaded rod.
9. The bolt-nut assembly defined in claim 1, wherein the first locking nut defines one or more through holes therethrough, and the fastener defines locking holes corresponding to the one or more through holes; the bolt and nut assembly further comprises one or more fastening screws, and the fastening screws penetrate through the through holes and are in threaded fit connection with the locking holes.
10. The bolt-nut assembly defined in claim 1, further comprising first and second clamping nuts; the first clamping nut is in threaded fit connection with the main threaded rod, threads are arranged on the outer side surface of the second locking nut, the second clamping nut is in threaded fit connection with the outer side surface of the second locking nut, and the first clamping nut and the second clamping nut are abutted and fixed.
CN202010474627.6A 2020-05-29 2020-05-29 Bolt and nut assembly Pending CN111577736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010474627.6A CN111577736A (en) 2020-05-29 2020-05-29 Bolt and nut assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010474627.6A CN111577736A (en) 2020-05-29 2020-05-29 Bolt and nut assembly

Publications (1)

Publication Number Publication Date
CN111577736A true CN111577736A (en) 2020-08-25

Family

ID=72121937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010474627.6A Pending CN111577736A (en) 2020-05-29 2020-05-29 Bolt and nut assembly

Country Status (1)

Country Link
CN (1) CN111577736A (en)

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