CN209164329U - Fasten subassembly of lock bolt - Google Patents
Fasten subassembly of lock bolt Download PDFInfo
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- CN209164329U CN209164329U CN201822025109.7U CN201822025109U CN209164329U CN 209164329 U CN209164329 U CN 209164329U CN 201822025109 U CN201822025109 U CN 201822025109U CN 209164329 U CN209164329 U CN 209164329U
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- screw thread
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- fastening
- bolt
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- 210000003781 tooth socket Anatomy 0.000 claims abstract description 14
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- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
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- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of fastening subassembly of lock bolt, including connection bolt, fastening nut and stop nut, the fastening nut and stop nut are covered on connection bolt and are matched with the screw thread connecting on bolt, one section of upper screw thread and lower screw thread are equipped at intervals on connection bolt, the hand of spiral of the upper screw thread and lower screw thread is on the contrary, the fastening nut and stop nut are matched with upper screw thread and lower screw thread respectively；A locking member is also cased between fastening nut and stop nut, on connection bolt；It is pitch face in the lower end surface of fastening nut, the upper surface of the upper surface of stop nut and locking member and lower end surface, multiple tooth sockets is all had on each pitch face, tooth socket is contrary on the pitch face of the upper and lower end face of locking member；The upper and lower end face of the locking member is meshed with the upper surface of the lower end surface of fastening nut and stop nut respectively.Even if the fastening subassembly of lock bolt that the utility model obtains is appointed under vibration with preferable fastening effect.
Description
Technical field
The utility model relates to a kind of fasteners, and in particular to a kind of fastening subassembly of lock bolt.
Background technique
Bolt and nut connection is the very common connecting mode of one kind in field of mechanical technique, automobile, aerospace,
The fields such as rail traffic and production equipment manufacture are very widely used.By high-strength impact load, high-intensitive alternating load
And in the working environment of high temperature variation, bolt and nut couples the problem of being produced from loosening.Existing check bolt spiral shell
In female coupling structure, some anti-loosing effects are good, but the disassembly of anti-loose structure complexity is inconvenient；Some anti-loose structure disassembled simply sides
Just, but anti-loosing effect is bad.
In view of the above-mentioned problems, China State Intellectual Property Office was disclosed on April 30th, 2014, publication No. is
103758845 Double-nut check bolt pair, the bolt are equipped with two nut nuts one, nuts with matching
Two；The face that two nut nuts one, nut two are in contact is designed as pitch face, and is intermeshed；The pitch face
Upper angle is greater than the angle of thread of bolt.Above-mentioned Double-nut check bolt pair is simple with structure, prevents due to vibration and power
It is loosened caused by load, the advantage that installing and dismounting is easy.But the Double-nut check bolt pair is by between positive and negative two nut
Frictional force achieve the purpose that prevent nut loosening to have preferable effect really in certain degree, but pretend in load
With under the strong environment of large vibration amplitude, tight split nut can become relaxation slowly to make fastening nut disappear fastening effect.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to how to provide a kind of energy
Nut loosening is enough prevented, meanwhile, the good fastening subassembly of lock bolt of fastening effect in the case where beating vibration environment.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:
A kind of fastening subassembly of lock bolt, it includes connection bolt, fastening nut and stop nut, the fastening nut and
Stop nut is covered on connection bolt and is matched with the screw thread connecting on bolt, which is characterized in that between on connection bolt
Screw thread and lower screw thread, the upper screw thread and the hand of spiral of lower screw thread are gone up on the contrary, and connecting bolt at upper screw thread every being equipped with one section
Diameter be less than lower screw thread at connect bolt diameter；The fastening nut and stop nut respectively with upper screw thread and lower screw thread phase
Cooperation；A locking member is also cased between fastening nut and stop nut, on connection bolt；Fastening nut lower end surface,
The upper surface of stop nut and the upper surface of locking member and lower end surface are pitch face, are all had on each pitch face multiple
Tooth socket, wherein tooth socket is contrary on the pitch face of the upper and lower end face of locking member；The upper and lower end face of the locking member is respectively and tightly
Gu the lower end surface of nut and the upper surface of stop nut are meshed.In this way, by being added between fastening nut and stop nut
One locking member, and locking member is meshed with fastening nut and stop nut respectively, the rotation counterclockwise after locking member is put into
Turn the tight split nut of installation, continues rotational fastener nut counterclockwise when fastening nut pushes against locking member, tooth socket between the two is tight
Gu mutual sliding can be generated under the rotation that nut is counterclockwise, because of the setting of tooth socket between locking member and fastening nut, even if strong
Big pressure, which acts on lower locking member, to have slightly backwards rotation with the torsion counterclockwise of fastening nut, locking member and locking spiral shell
Also sliding can be generated between mother without having an impact to fastening nut, will not inversely be driven fastening nut and be weakened fastening and make
With.In the middle part of fastening nut and stop nut with to connect the aperture that bolt matches also just different, can be straight in this way, when in use
The installation site for determining nut according to the size in aperture is connect, setup error situation is avoided the occurrence of.
Further, a cone table is formed between upper screw thread and lower screw thread.In this way, up and down can be natural between screw thread
Transition, meanwhile, provide installation site for locking member.
Further, the locking member is in pyramidal, a through-hole is equipped in locking member, the through-hole is by being located at upper end
Bellmouth and positioned at lower end round hole form.In this way, set pyramidal for locking member, meshed fastening nut and
The diameter of stop nut further can determine that its installation site by the diameter of two nuts, installation avoided to malfunction with regard to different.
Locking member upper end, which is arranged to bellmouth, can effectively reduce locking member upper end diameter, avoid locking member and stop nut at the cliff of displacement seemingly
Contact, can it is aesthetic in appearance and save material can also effective force.
Further, the reach L of lower screw thread is less than or equal to the round hole depth in fastening nut thickness L2 and locking member
The sum of L1 is spent, fastening nut thickness L2 is more than or equal to round hole depth L1, i.e. L≤L1+L2, L2 >=L1 in locking member.In this way,
It can ensure that locking member and fastening nut reliable contacts, and be avoided that effective transmitting that locking member is too long and guarantees power.
Further, the upper end diameter D1 of locking member internal tapered hole surrounds diameter of a circle, locking member equal to upper thread crest
Inner circular bore dia D2 is equal to lower thread crest and surrounds diameter of a circle.In this way, locking member can be accurately positioned, make the axle center of locking member
Line is overlapped with the axial line of upper and lower threaded rod, it is ensured that upper and lower tooth socket intermeshing is to guarantee effective transmitting of power.
Further, the depth of locking member bellmouth is screw thread 1-2 screw thread length on connection bolt.In this way, when because of bolt
The relatively thick component of fastening size cause locking member be inserted in lower threaded rod depth it is smaller when, locking member can be accurately positioned, it is ensured that
The axial line of locking member is overlapped with the axial line of upper and lower threaded rod.
Compared with prior art, the fastening subassembly of lock bolt that the utility model obtains has the advantages that
1, by adding a locking member between fastening nut and stop nut, and by locking member respectively with fastening nut
It is meshed with stop nut, the tooth socket between fastening nut and locking member can generate mutually under fastening nut rotation counterclockwise
Sliding, locking member can have slightly backwards rotation with the torsion counterclockwise of fastening nut under powerful pressure effect, lock
Also sliding can be generated between part and fastening nut without having an impact to fastening nut, will not inversely be driven fastening nut and be subtracted
Weak fastening effect.
2, the diameter of fastening nut and stop nut is different, and connects the upper screw thread on bolt and lower screw thread corresponding position
Diameter is also different, in this way, during installation, can quickly distinguish the specific installation site of two nuts, avoid setup error.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that subassembly of lock bolt is fastened in embodiment；
Fig. 2 is the structural schematic diagram for connecting bolt；
Fig. 3 is the structural schematic diagram of locking member in embodiment；
Fig. 4 is the fit structure schematic diagram of fastening nut and locking member in embodiment；
Fig. 5 is the fit structure schematic diagram of stop nut and locking member in embodiment.
In figure: connection bolt 1, upper screw thread 11, lower screw thread 12, fastening nut 2, locking member 3, bellmouth 31, round hole 32,
Stop nut 4.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment:
As shown in Figure 1, Figure 4, Figure 5, fastening subassembly of lock bolt provided in this embodiment, it includes connection bolt 1, fastening
Nut 2 and stop nut 4, the fastening nut 2 and stop nut 4 cover on connection bolt 1 and with the spiral shell that connect on bolt 1
Line matches, and is equipped at intervals with one section of upper screw thread 11 and lower screw thread 12 on connection bolt 1, the upper screw thread 11 and lower screw thread 12
Hand of spiral is on the contrary, and connect the diameter of bolt 1 less than the diameter for connecting bolt 1 at lower screw thread 12 at upper screw thread 11；It is described tight
Gu nut 2 and stop nut 4 are matched with upper screw thread 11 and lower screw thread 12 respectively；Between fastening nut 2 and stop nut 4,
A locking member 3 is also cased on connection bolt 1；In the lower end surface of fastening nut 2, the upper surface of stop nut 4 and locking member 3
Upper surface and lower end surface be pitch face, multiple tooth sockets are all had on each pitch face, wherein the upper and lower end face of locking member 3
Pitch face on tooth socket it is contrary；The upper and lower end face of the locking member 3 respectively with the lower end surface of fastening nut 2 and locking spiral shell
The upper surface of mother 4 is meshed.It is provided with locking member 3 between fastening nut 2 and stop nut 4, to avoid fastening nut 2 and can prevent
The contact surface of loose 4 cliff of displacement formula of nut, the effect of the good conductance of energy, to make 4 collective effect of fastening nut 2 and stop nut
And reach good anti-loosening effect.Stop nut 4 certainly will have loosening trend under oscillatory load or mechanical oscillation effect, this
When stop nut 4 must rotate counterclockwise, and the molar of tooth socket is mutually embedded between stop nut 4 and locking member 3, to will drive
Locking member 3 rotates counterclockwise, and the molar of tooth socket is also mutually embedded between locking member 3 and fastening nut 2, and then drives fastening nut
2 backwards rotations, and counter-rotating tightens fastening nut 2 in advance, Gu and stop nut 4 is prevented to reverse loosening, and this well
Kind prevents loosening mechanism from will not weaken with the increase of load and the enhancing of oscillation intensity, can enhance instead, thus can be very well
Reach and prevent nut loosening volume effect.
As shown in Fig. 2, forming one between upper screw thread 11 and lower screw thread 12 for the ease of distinguishing upper screw thread 11 and lower screw thread 12
A cone table.
As shown in figure 3, locking member 3 in pyramidal, is equipped with a through-hole in locking member 3, the through-hole is by being located at upper end
Bellmouth 31 and positioned at lower end round hole 32 form.
In the present embodiment, the reach L of lower screw thread 12 is less than or equal in 2 thickness L2 of fastening nut and locking member 3
The sum of 32 depth L1 of round hole, 2 thickness L2 of fastening nut are more than or equal to round hole 32 depth L1, i.e. L≤L1+ in locking member 3
L2, L2 >=L1.L≤L1+L2, there are also the affluences of certain length other than fastening nut thickness L2 for the screw thread of guarantee screw rod lower part
Amount, the purpose of this design not only can guarantee that fastening nut and tight fitting for lock were reliably connected but also can effectively increase the scope of application of bolt,
So as to reduce processing specification type.
The upper end diameter D1 of 3 internal tapered hole 31 of locking member is equal to upper 11 crest of screw thread and surrounds diameter of a circle, 3 inner circle of locking member
32 diameter D2 of shape hole is equal to lower 12 crest of screw thread and surrounds diameter of a circle.The depth of 3 bellmouth 31 of locking member is spiral shell on connection bolt 1
The 1-2 screw thread length of line 11.
Finally, it should be noted that technical side the above examples are only used to illustrate the technical scheme of the present invention and are not limiting
Case, although applicant describes the invention in detail referring to preferred embodiment, those skilled in the art should be managed
Solution, modification or equivalent replacement of the technical solution of the present invention are made for those, without departing from the objective and range of the technical program,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of fastening subassembly of lock bolt, it includes connecting bolt (1), fastening nut (2) and stop nut (4), described tight
Gu nut (2) and stop nut (4) are covered in connection bolt (1) and are matched with the screw thread connecting on bolt (1), feature
It is, one section of upper screw thread (11) and lower screw thread (12), the upper screw thread (11) and lower screw thread is equipped at intervals in connection bolt (1)
(12) hand of spiral is on the contrary, and connect the diameter of bolt (1) less than connection bolt (1) at lower screw thread (12) at upper screw thread (11)
Diameter；The fastening nut (2) and stop nut (4) are matched with upper screw thread (11) and lower screw thread (12) respectively；It is fastening
A locking member (3) is also cased between nut (2) and stop nut (4), in connection bolt (1)；In the lower end of fastening nut (2)
Face, the upper surface of the upper surface of stop nut (4) and locking member (3) and lower end surface are pitch face, on each pitch face
All have multiple tooth sockets, wherein tooth socket is contrary on the pitch face of the upper and lower end face of locking member (3)；The locking member (3)
Upper and lower end face is meshed with the upper surface of the lower end surface of fastening nut (2) and stop nut (4) respectively.
2. fastening subassembly of lock bolt according to claim 1, which is characterized in that upper screw thread (11) and lower screw thread (12) it
Between formed a cone table.
3. fastening subassembly of lock bolt according to claim 1, which is characterized in that the locking member (3) in pyramidal,
A through-hole is equipped in locking member (3), the through-hole is by being located at the bellmouth (31) of upper end and positioned at round hole (32) group of lower end
At.
4. fastening subassembly of lock bolt according to claim 3, which is characterized in that the reach L of lower screw thread (12) is small
In the sum of round hole (32) depth L1, fastening nut (2) thickness L2 for being equal in fastening nut (2) thickness L2 and locking member (3)
More than or equal to round hole (32) depth L1, i.e. L≤L1+L2, L2 >=L1 in locking member (3).
5. fastening subassembly of lock bolt according to claim 3, which is characterized in that locking member (3) internal tapered hole (31)
Upper end diameter D1 is equal to upper screw thread (11) crest and surrounds diameter of a circle, and locking member (3) inner circular hole (32) diameter D2 is equal to lower spiral shell
Line (12) crest surrounds diameter of a circle.
6. fastening subassembly of lock bolt according to claim 3, which is characterized in that the depth of locking member (3) bellmouth (31)
Degree is screw thread (11) 1-2 screw thread length in connection bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822025109.7U CN209164329U (en) | 2018-12-04 | 2018-12-04 | Fasten subassembly of lock bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822025109.7U CN209164329U (en) | 2018-12-04 | 2018-12-04 | Fasten subassembly of lock bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209164329U true CN209164329U (en) | 2019-07-26 |
Family
ID=67342031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822025109.7U Active CN209164329U (en) | 2018-12-04 | 2018-12-04 | Fasten subassembly of lock bolt |
Country Status (1)
| Country | Link |
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| CN (1) | CN209164329U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268381A (en) * | 2018-12-04 | 2019-01-25 | 中冶建工集团有限公司 | Double nut fastens subassembly of lock bolt |
| CN111688429A (en) * | 2020-06-15 | 2020-09-22 | 东风华神汽车有限公司 | Anti-loosening device for balancing suspension thrust rod |
| CN116104857A (en) * | 2023-02-28 | 2023-05-12 | 张家陶 | A self-locking anti-loosening screw connection assembly |
-
2018
- 2018-12-04 CN CN201822025109.7U patent/CN209164329U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268381A (en) * | 2018-12-04 | 2019-01-25 | 中冶建工集团有限公司 | Double nut fastens subassembly of lock bolt |
| CN111688429A (en) * | 2020-06-15 | 2020-09-22 | 东风华神汽车有限公司 | Anti-loosening device for balancing suspension thrust rod |
| CN116104857A (en) * | 2023-02-28 | 2023-05-12 | 张家陶 | A self-locking anti-loosening screw connection assembly |
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