CN206190709U - Fastener - Google Patents
Fastener Download PDFInfo
- Publication number
- CN206190709U CN206190709U CN201621245604.3U CN201621245604U CN206190709U CN 206190709 U CN206190709 U CN 206190709U CN 201621245604 U CN201621245604 U CN 201621245604U CN 206190709 U CN206190709 U CN 206190709U
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- China
- Prior art keywords
- annular element
- faying face
- nut
- fastener
- tightening piece
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Abstract
The utility model provides a fastener includes: screw -tight piece, constructed with the cooperation screw rod combine with the fastening by fastener, the first end of nut forms first faying face on the surface, and loop forming element, the loop forming element with the coaxial setting of screw -tight piece, the first side of loop forming element is formed with a recess, a recess's bottom forms the second faying face, wherein, first faying face is held among the recess, first faying face combines together with the second faying face for obstruct when moving back when the screw -tight piece pine screw -tight piece's further pine moves back. Through the utility model discloses a fastener can realize the more stable location to nut or bolt head to hide the faying face of nut or bolt head and loop forming element within the loop forming element, thereby reduced the possibility that influences the fastener performance under abominable operating mode between the foreign matter entering faying face, make fastener more reliable and more stable.
Description
Technical field
The utility model is related to a kind of fastener, more particularly to a kind of realization reliable positioning more stable to tightening piece and guarantor
The fastener of shield.
Background technology
Fastener is applied in all trades and professions for connect fastening demand, such as in vehicle, building machinery, agricultural machine
All it is widely used in tool, manufacture machinery etc..In for large-scale engineering machinery or engineering truck, due to working environment it is severe with
And the effect of heavy load so that fastener thereon is subject to the vibration of all directions and impacting for load, and this is caused on fastener
Tightening piece such as nut or bolt head be easier to release, so as to cause fastener function reduction even fail.Cause very big
Potential safety hazard.
Fastener locking method conventional at present generally comprises the locking of non-removable locking scheme and increasing friction force
Scheme.Non-removable locking scheme is changed into not detachable threaded connection using welding, bonding or rushing a little mode such as riveting
Detachable threaded connection.In non-removable locking scheme, threaded fastener can not be reused, and troublesome poeration, be usually used in
Some require that anti-loosening property is high and are not required to the important events of dismounting.The locking scheme of increasing friction force using between increasing screw thread or
The frictional force of bolt (screw) head and nut end face increases the method for both frictional force and reaches locking purpose simultaneously.Increase
The locking scheme of big frictional force is not limited by space, can be dismantled repeatedly, but reliability is poor, in work certain hour
Afterwards, can be because of the reasons such as vibration reduction anti-loosing effect.
Utility model content
The technical problem that the utility model is solved is to provide a kind of fastener, it is possible to achieve to nut or bolt head
More stable positioning, and nut or bolt head are hidden within annular element with the faying face of annular element, reduce severe
Operating mode under foreign matter enter between faying face so as to influence the possibility of fastener performance so that the more stable reliability of fastener.
According to an exemplary embodiment of the present utility model, there is provided a kind of fastener, including：
Tightening piece, is configured to be combined to fasten by fastener with screw rod is coordinated, shape on the first end surfaces of the nut
Into the first faying face；And
Annular element, the annular element is coaxially disposed with the tightening piece, and it is recessed that the first side of the annular element is formed with first
Enter portion, the second faying face is formed on the bottom of first recess；
Wherein, first faying face is accommodated in first recess, and first faying face is combined with second
Face engages so that hinder the further pine of the tightening piece to move back when tightening piece pine moves back.
According to an exemplary embodiment of the present utility model, wherein, the tightening piece includes：
Main part；And
First protuberance, first protuberance extends from one end of the main part, and first faying face is formed in
On the end face of first protuberance.
According to an exemplary embodiment of the present utility model, wherein, first faying face is provided with least one
First junction surface, second faying face is provided with least one second junction surfaces being engaged with the first junction surface, described
One junction surface includes the first oblique faying face and the second blocking surface that extend in a circumferential direction, and second junction surface is included in circle
The the first oblique faying face and the second blocking surface extended in circumferential direction, wherein the first oblique faying face at first junction surface is constructed
Contacted into being engaged with the first of the second junction surface the oblique faying face, second blocking surface on first composition surface is configured to and
Second blocking surface at two junction surfaces is engaged contact, to realize the engagement of tightening piece and the annular element.
According to an exemplary embodiment of the present utility model, wherein, the first oblique faying face at first junction surface
The helicoid with identical lift angle is respectively formed to cooperate with the first of the second junction surface the oblique faying face, the spiral shell of the helicoid
Rotation lift angle is more than the externally threaded lead angle of the cooperation screw rod, the spiral shell of the helicoid on the second junction surface of the annular element
Screw on the direction that rises with it is described it is externally threaded screw it is in opposite direction.
According to an exemplary embodiment of the present utility model, wherein, first junction surface and be engaged second
Junction surface is two.
According to an exemplary embodiment of the present utility model, wherein, second blocking surface at first junction surface and
Second blocking surface at the second junction surface is identical with the angle of horizontal plane, and is obtuse angle or right angle.
According to an exemplary embodiment of the present utility model, wherein, the annular element it is relative with first side
The second side be formed with ratchet, the ratchet be constructed such that annular element and by the frictional force between tightening member more than nut with
Frictional force between annular element, to cause that annular element keeps not relative to by tightening member when tightening piece is relative to screw bolt loosening
It is dynamic.
According to an exemplary embodiment of the present utility model, wherein, the ratchet is configured to leaning in annular element
Closely it is arranged radially on the surface of the side of tightening member.
According to an exemplary embodiment of the present utility model, wherein, the tightening piece has four-prism shape, positive six
Prismatic or quincunx outer surface, the outer peripheral face of the annular element is formed with plum blossom side, so that wrench device drives described twisting
Tight part and annular element are rotated together.
According to an exemplary embodiment of the present utility model, wherein, the plum blossom of the annular element while while number be tool
There are more than 3 times of the side number of the prismatic tightening piece.
According to an exemplary embodiment of the present utility model, wherein：The wrench device includes：
Cylindric main part；
First spanner portions, are arranged on the main part inner side, and be configured to be engaged with the plum blossom side of the annular element；
And
Second spanner portions, are arranged on the main part inner side, and be configured to be engaged with the lateral surface of the tightening piece.
According to an exemplary embodiment of the present utility model, wherein, also formed on the annular element and the drive
The guiding groove of the arc of dynamic hole connection.
According to an exemplary embodiment of the present utility model, wherein, the tightening piece is nut, the nut and institute
Cooperation screw flight is stated to coordinate.
According to an exemplary embodiment of the present utility model, wherein, the nut is configured to the annular element
Both can not be kept completely separate.
According to an exemplary embodiment of the present utility model, wherein, the tightening piece further includes the of annular
Two protuberances, second protuberance extends from first protuberance in the inner side of first faying face, to be contained in
In stating annular element.
According to an exemplary embodiment of the present utility model, wherein, the end of second protuberance is formed outwards
Prominent flange, the flange coordinates with the second side of the annular element, to allow the nut to turn relative to the annular element
Move but can not depart from from the annular element.
According to an exemplary embodiment of the present utility model, wherein, the flange be second protuberance from
What the first side of the annular element was formed after reaching the second side through the annular element by Sheet Metal Forming Technology.
According to an exemplary embodiment of the present utility model, wherein, the nut is split part with the annular element.
According to an exemplary embodiment of the present utility model, wherein, the tightening piece is bolt head, the bolt head
With it is described cooperation screw rod integrally connected and together with rotate.
Fastener according to the above-mentioned various embodiments of the utility model, described is contained in by by the first faying face
In one recess, nut or bolt head are hidden within annular element with the faying face of annular element, reduced in severe operating mode
Lower foreign matter enters between the first faying face and the second faying face so as to influence the possibility of fastener performance so that fastener is more steady
It is fixed reliable.
Brief description of the drawings
The utility model with reference to the accompanying drawings to further describe, wherein：
Fig. 1 is shown according to a kind of schematic perspective view of the fastener of exemplary embodiment of the present utility model；
Fig. 2 is the decomposing schematic representation for showing the fastener shown in Fig. 1；
Fig. 3 is the partial schematic sectional view for showing the fastener shown in Fig. 1；
Fig. 4 is the top view for showing the fastener shown in Fig. 1；
Fig. 5 is the schematic perspective view of the nut for showing the fastener shown in Fig. 1；
Fig. 6 is the partial sectional view for showing the nut shown in Fig. 5；
Fig. 7 is the partial sectional view for showing the nut according to another exemplary embodiment of the present utility model；
Fig. 8 is the schematic perspective view of the annular element for showing the fastener shown in Fig. 1；
Fig. 9 is another schematic perspective view of the annular element for showing the fastener shown in Fig. 1；
Figure 10 is the partial sectional view for showing the annular element shown in Fig. 9；
Figure 11 is the top view for showing the annular element according to a kind of Fig. 9 of exemplary embodiment of the present utility model；
Figure 12 is the top view for showing the annular element according to another exemplary embodiment of the present utility model；
Figure 13 is the geometrical principle figure of the lead angle of the first faying face for showing the tightening piece shown in Fig. 5；
Figure 14 is to show the externally threaded lead angle with the screw rod of the tightening piece cooperation of embodiment of the present utility model
Geometrical principle figure；
Figure 15 is the schematic perspective view for showing the wrench device for tightening or unclamping the fastener；
Figure 16 is the sectional view for showing the wrench device shown in Figure 15；
Figure 17 is the sectional view of the wrench device according to another exemplary embodiment of the present utility model；
Figure 18 is to show the operation principle schematic diagram by the fastener application shown in Fig. 1 when the engineering truck；
Figure 19 is the decomposing schematic representation for showing the fastener according to another exemplary embodiment of the present utility model；And
Figure 20 is to show to fasten operation principle schematic diagram during by fastener using the fastener shown in Figure 19.
Specific embodiment
Although the utility model will be fully described with reference to the accompanying drawing containing preferred embodiment of the present utility model, retouch herein
Should be appreciated that one of ordinary skill in the art can change utility model described herein before stating, while it is new to obtain this practicality
The technique effect of type.Thus, it should be understood that the description of the above is an extensive announcement for one of ordinary skill in the art, and
Its content does not lie in the exemplary embodiment described by limitation the utility model.
According to utility model design generally of the present utility model, there is provided a kind of fastener, including tightening piece and ring
Shape part.Tightening piece is configured to be combined to fasten by fastener with screw rod is coordinated, and the is formed on the first end surfaces of the nut
One faying face.Annular element is coaxially disposed with the tightening piece, and the first side of the annular element is formed with the first recess, described
Second faying face is formed on the bottom of one recess.First faying face is accommodated in first recess, and described first
Faying face is combined with the second faying face so that hinder the further pine of the tightening piece to move back when tightening piece pine moves back.
According to a kind of embodiment of the present utility model, the tightening piece has four-prism shape, positive six prismsby shape or plum
Flower-shape outer surface.As shown in figs. 1-7, the tightening piece is nut 1, and the nut coordinates with the screw rod 100 (Figure 18) screw thread.
Nut 1 can be tetragonal nut, hex nut or horned nut.As shown in Figure 19-20, the tightening piece is bolt head 200,
The bolt head 200 and the integrally connected of the screw rod 201 and together with rotate.So, bolt head 200 and screw rod 201 constitute one
Bolt.Bolt head 200 can be corner bolt head, hexagonal bolt head or plum blossom bolt head.
Referring to Fig. 1-18, the fastener to the utility model embodiment so that tightening piece is as nut as an example is described.
As shown in figures 1 to 6, fastener 10 includes：Nut 1 and annular element 2.Nut 1 is configured to and coordinates screw rod (Figure 18)
With reference to fasten by fastener, the first faying face is formed on first end surfaces (lower surface in Fig. 1) of the nut 1；Annular
Part 2 is coaxially disposed with the nut 1, and first side (upside in Fig. 1) of the annular element is formed with the first recess 21, described
Second faying face is formed on the bottom of the first recess；Wherein, first faying face is accommodated in first recess, institute
State the first faying face to be combined with the second faying face so that hinder the further pine of the nut 1 to move back when the pine of nut 1 moves back.
It will be understood by those skilled in the art that being contained in the first recessed of annular element by by the first faying face of nut 1
In portion 21, the more stable positioning for nut is realized, and the first faying face of nut is combined with the second of annular element
Face is hidden within annular element, is reduced under severe operating mode foreign matter and is entered between faying face so as to influence fastener performance
Possibility so that the more stable reliability of fastener.
According to an exemplary embodiment, fastener of the present utility model can be applied in Work machine, be used for example as
The connector of creeper tread, chassis member in engineering truck.Due to the severe applying working condition of Work machine, have in use
There are larger vibration and the generation of larger load, especially transverse load to cause that nut or bolt head in fastener can be with
The passage of use time and loosen.Using the fastener of the utility model embodiment, by nut or bolt head and use
The mating reaction of the annular element of packing ring is done, when nut or bolt head start pine and move back so that screw fastening clamp force is tighter, suppresses nut
Or the further pine of bolt head moves back, fastener is more stable to be fixedly secured on screw rod 100.
Nut in the fastener can be variously-shaped, such as hex nut, tetragonal nut or quincunx nut,
The nut for showing in embodiment shown in Fig. 1 and Fig. 5 is hex nut.
An exemplary embodiment of the present utility model according to Fig. 1, the nut 1 includes the master of prism shape
Body portion 11 and the first protuberance 12 of cylinder, first protuberance 12 extend from one end of the main part 11, and described the
One faying face is formed on the end face of first protuberance 12.
According to a kind of exemplary embodiment of the present utility model, as shown in Fig. 2,3 and 5, first faying face is included in
The the first oblique faying face 121 and the second blocking surface 122 extended on circumferencial direction, second faying face are included in a circumferential direction
The the first oblique faying face 211 and the second blocking surface 212 for extending, wherein the first oblique faying face 121 of first faying face is by structure
Cause to be engaged with the first of the second joint portion the oblique faying face 211 and contact, the second blocking surface 122 of first faying face is by structure
Cause to be engaged with the second blocking surface 212 of the second joint portion and contact, to realize the combination of nut and the annular element.
Figure 13 is the geometrical principle figure of the lead angle of the first faying face for showing the nut shown in Fig. 5.Figure 14 is to show
With the geometrical principle figure of the externally threaded lead angle of the screw rod of the nut screw connection of embodiment of the present utility model.First faying face
The first oblique faying face 121 and the first oblique faying face 211 of the second faying face be respectively formed the helicoid with identical lift angle with phase
Mutually coordinate.In fig. 13, what the right part of Figure 13 showed is the developed dimension relation schematic diagram of helicoid.φ is the first oblique knot
The lead angle in conjunction face 121 and 211.Ph for helicoid climbing highly, D for helicoid central diameter.In fig. 14, α is and this
The externally threaded lead angle of the screw rod 100 of the nut screw connection of the embodiment of utility model, d is the big footpath of screw flight, and d1 is
Screw flight path, d2 is screw flight central diameter.Because nut 1 and screw rod coordinate, the lead angle of the internal thread of nut 1
Also it is α.
According to a kind of exemplary embodiment of the present utility model, as shown in Fig. 2,5, the first of first joint portion tiltedly ties
First oblique faying face 211 of the joint portion of conjunction face 121 and second is respectively formed the helicoid with identical lift angle to cooperate.Spiral
The lead angle φ in face is more than the lead angle α of the internal thread, the spiral shell of the helicoid on the second joint portion of the annular element
Screw on the direction for rising in opposite direction with screwing for the internal thread.So, it is static relative to screw rod 100 in annular element 2, and nut
In the case that 1 relative to the rotation predetermined angular of screw rod 100, the outside of nut 1 is (upward in Fig. 1 in axis direction relative to annular element 2
Direction) on climb altitude more than nut inner side relative to screw flight on axis direction (upwardly direction in Fig. 1)
Pine move back height, be static relative to annular element due to screw rod, so that nut 1 is for the screw rod stretching that is engaged, i.e.,
Nut further compresses annular element so that annular element is further compressed by fastener.Therefore, annular element has the work of lock washer
With.
Those skilled in the art it is also understood that corresponding to different lead angles, the internal thread of screw connector
Lead angle will also be adjusted accordingly.
According to a kind of exemplary embodiment of the present utility model, first joint portion and the second joint portion being engaged are equal
It is one or more, the number of the first joint portion is equal with the number of the second joint portion.
According to a kind of exemplary embodiment of the present utility model, first joint portion and the second joint portion being engaged are equal
It is two.
In the embodiment shown in Fig. 1-5,7,15, the first joint portion and the second joint portion being engaged are two.However,
The number of the first joint portion and the second joint portion being engaged can also be it is multiple, such as four, six or more, and multiple
First joint portion and the second joint portion are distributed along the circumferencial direction of the faying face of place first and the second faying face respectively.This area skill
Art personnel also can be according to the number that joint portion is selected the need for operating mode.For six embodiments of joint portion, due to for each
The helicoid of joint portion is shorter, therefore, rotatable angle is smaller during nut loosening, i.e., maximum allowable nut loosening angle compared with
It is small, therefore suitable for relatively preferable, higher to the loosening requirement of the fastener application of operating mode.And for the reality in two basic change portion
Apply for example, because the nut loosening angle more long therefore maximum allowable of the helicoid for each joint portion is larger, therefore fit
Relatively poor for operating mode or to fastener loosening is required in relatively low application.And two basic change portion is than six joint portions
Speech, it is possible to decrease processed complex degree and corresponding processing cost.
According to a kind of exemplary embodiment of the present utility model, wherein, in order that proper nut is installed with annular element combining
When, second blocking surface 122,212 abuts against to realize being mutually located for nut and annular element, and prevent nut with it is interior
The folder for screwing rotation of the direction identical direction relative to annular element, second blocking surface 122,212 and horizontal plane of screw thread
Angle is identical, and is disposed as obtuse angle or right angle.In the embodiment shown by Fig. 2,5,8,11, second blocking surface 122,
212 is right angle with the angle of horizontal plane.
According to a kind of exemplary embodiment of the present utility model, as shown in figure 9, the annular element is close by tightening member
Side surface on be formed with ratchet 22, the ratchet 22 is constructed such that annular element 2 and by the friction between tightening member
Power is more than the frictional force between nut 1 and annular element 2, to cause that annular element 2 is relative to quilt when nut 1 is relative to screw bolt loosening
Tightening member is remained stationary as.
According to a kind of exemplary embodiment of the present utility model, the ratchet 22 is configured to as shown in Figure 9 in annular element
It is arranged radially on the surface by the side of tightening member.The number of the radial ratchet is more than the first joint portion and phase
The quantity of the second joint portion for coordinating, the ratchet of compact arranged radial setting causes annular element 2 and by between tightening member
Larger frictional force is produced, the frictional force is more than the frictional force between nut 1 and annular element 2 so that the annular in nut loosening
Part 2 is remained stationary as relative to by tightening member.
According to a kind of exemplary embodiment of the present utility model, the nut 1 have four-prism shape, positive six prismsby shape or
Person is quincunx outer surface, the outer peripheral face of the annular element is formed with plum blossom side, so that wrench device drives the tightening piece and ring
Shape part is rotated together.So as to lock or unclamp nut and annular element simultaneously, facilitate the assembly and disassembly of fastener.
According to a kind of exemplary embodiment of the present utility model, the plum blossom of the annular element 2 while while number be with prism
More than 3 times of the side number of the tightening piece 1 of shape.
As shown in Figure 15,16, according to an exemplary embodiment, the wrench device 3 includes：Cylindric main body
Portion；First spanner portions 31, for being combined with the annular element 2, first spanner portions be formed in the main part with institute
The inner side of the first end of annular element combination is stated, and is formed as the plum lace shape being engaged with the plum blossom side of the annular element；And
Second spanner portions 32, for being combined with the nut, second spanner portions 32 are from first spanner portions 31 along described
The axis of main part extends internally, and is formed as the shape being engaged with the lateral surface of the nut 1.Wrench device also includes shape
Into the connecting portion 33 on the main part, the connecting portion 33 is used to be connected with external key instrument, to turn the spanner
Device 3, the annular element 2 and the nut 1, with the first end relative second of the connecting portion 33 from the main part
End extends to second spanner portions 32.In a kind of alternate embodiment, handle can be integrally provided on main part,
To drive the wrench device.When fastener is tightened or dismantled using the wrench device 3, by the annular element 2
Second blocking surface 212 is abutted against with the first blocking surface 122 of the nut so that nut 1 and the relative positioning of annular element 2.By institute
The first spanner portions 31 are stated to combine on the plum blossom side of the outer peripheral face of the annular element, and first spanner portions 32 are combined in institute
On the outer surface of the main part for stating nut 1, the connecting portion 33 is inserted using external key instrument, so as to pass through Wrench
The fastener is tightened or dismantled.
As shown in figures 12 and 17 of the drawings, in a kind of alternate embodiment, multiple drives are provided with the first side of the annular element 2
Dynamic hole 202.The annular guiding groove 201 connected with the drive hole 202 is further also formed on the annular element 2.Phase
Ying Di, the utility model also provides a kind of wrench device 4.The wrench device 4 includes：Cylindric main part 41；Spanner portions 42,
The inside of main part 41 is formed in, for being combined with the nut, and is formed as what is be engaged with the lateral surface of the nut 1
Shape；And multiple drive rods 43, extending from the end surface of the main part, the drive rod 43 is configured to and the ring
The drive hole 202 of shape part coordinates, so that wrench device 4 drives the annular element 2 and nut 1 to rotate together.Using the spanner
When device 4 is tightened or dismantled to fastener, the second blocking surface 212 of the annular element 2 is hindered with the first of the nut
Block face 122 is abutted against so that nut 1 and the relative positioning of annular element 2.By the drive rod 43 of wrench device 4 drawing arcuately respectively
In the drive hole 202 of the insertion annular element 2 of guide groove 201, and spanner portions 41 are made to combine the outer surface of the main part in the nut
On, so as to the fastener is tightened or dismantled by wrench device.
According to a kind of exemplary embodiment of the present utility model, as shown in figure 15, second spanner portions are formed as hexagonal
Spanner portions.
According to a kind of exemplary embodiment of the present utility model, as shown in figure 15, the connecting portion is formed as square shape.
According to a kind of exemplary embodiment of the present utility model, as shown in Figure 2,3, the nut further includes annular
Second protuberance 13, second protuberance 13 extends from first protuberance 12 in the inner side of first faying face, institute
The internal diameter of the external diameter less than the annular element 2 of the second protuberance 13 is stated, to cause that second protuberance 13 is contained in the ring
In shape part 2.
According to a kind of exemplary embodiment of the present utility model, the nut 1 is configured to both with the annular element 2
Can not be kept completely separate.
According to a kind of exemplary embodiment of the present utility model, as shown in fig. 7, the end shape of second protuberance 13
Into flange 131 outwardly, the flange 131 coordinates (under the annular element 2 in such as Fig. 3 with the second side of the annular element
Side), to allow the nut to be rotated relative to the annular element but can not depart from from the annular element.The flange 131 has
The external diameter more larger than the internal diameter of annular element 2 as shown in Figure 3.So, flange is resisted against the as shown in Figure 3 annular element that is formed in
On the bottom surface of the recess of the second side (downside in Fig. 3) so that the nut rotates relative to the annular element but can not be from
The annular element departs from.In one embodiment, by set flange in the axial direction with the second side for being formed in annular element 2
Recess bottom surface between space height less than the first and second blocking surfaces height in the axial direction, can make
Nut 1 can only relative to annular element 2 rotate predetermined angular range so that the screw rod being engaged by nut 1 in axial direction
The distance of upper stretching is less than 1.0mm.Specifically, according to the fastener of the utility model embodiment, due to the first combination
The first oblique faying face 121 in portion is configured to be engaged with the first of the second joint portion the oblique faying face 211 and contacts, first knot
Second blocking surface 122 in conjunction portion is configured to be engaged with the second blocking surface 212 of the second joint portion and contacts.So, in nut 1
When being rotated relative to annular element 2 from blocking surface, nut 1 will gradually leave annular element 2, but due to flange 131 and the limit of annular element 2
System, nut 1 can only rotate predetermined angular range relative to annular element 2.In one embodiment, nut is rotated relative to annular element
Maximum angle scope be 30-70 degree, preferably 40-70 degree.
According to a kind of exemplary embodiment of the present utility model, the flange is from described in second protuberance 13
What the first side of annular element was formed after reaching the second side through the annular element by Sheet Metal Forming Technology.
According to an exemplary embodiment, the nut 1 and the annular element 2 are alternatively split part, only when in use
Ability temporary fit is used.
Operating process of 1-6,8-18 description according to the nut fastener of embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in figure 18, the fastener application of the utility model embodiment is used in engineering truck fasten by fastener example
During such as wheel hub 4, nut 1 and annular element 2 are alignd, that is, cause second blocking surface 212 and second joint portion of the first joint portion
Second blocking surface 122 is engaged, to prevent nut from screwing direction identical direction relative to annular element with nut inner thread
Rotation.The entirety of fastener 1 is tightened onto in the direction identical direction that screws with nut inner thread by using wrench device 3
By on tightening member, apply pretightning force and fastening will be clamped by tightening member.
As the passage of use time can produce the pine of nut 1 to move back.Due to annular element 2 and by the frictional force between tightening member
More than the frictional force between nut and annular element, when nut 1 is relative to 2 preliminary motion of annular element, annular element 2 is relative to screw rod
Remain stationary as.The preliminary motion is along the first oblique faying face 121 of the first joint portion for being engaged contact and the second joint portion
The first oblique faying face 211 carry out.As shown in Figs. 13 and 14, due to the first oblique faying face 121 and the shape of the first oblique faying face 211
As helicoid, the lead angle of the lead angle more than the internal thread of the helicoid.Then when nut pine moves back, moved back in pine
In the case of turning an angle, because first protuberance and main part of nut are along the first oblique faying face 121 and 211 edges
Lead angle direction is moved, and the climbing height on the outside of nut is more than the inside thread of nut from the outer spiral shell of the screw rod 100 being engaged
The height exited on line, so as to form the stretching for the screw rod being engaged.Therefore, in internal thread and externally threaded mating connection
Place forms bigger coupling mechanism force, and the further pine that the coupling mechanism force suppresses nut 1 moves back.And the screw rod being engaged is produced to nut 1
The opposite pulling force towards annular element 2 of life so that downwardly against the annular element 2, annular element 2 further compresses tight nut 1
Firmware, therefore annular element 2 and, the motion of suppression fastener bigger by the frictional force between tightening member.So, nut is more loose
Move back, the stretching to screw rod produced due to the difference of lead angle and lead angle is bigger, so that coupling mechanism force is bigger, causes spiral shell
Mother is less susceptible to release.
Figure 19 is the decomposing schematic representation for showing the fastener according to another exemplary embodiment of the present utility model；And
Figure 20 is to show to fasten operation principle schematic diagram during by fastener using the fastener shown in Figure 19.It is tight shown in Figure 19 and 20
Firmware 20 is that in the fastener 20 shown in Figure 19 and 20, tightening piece is with the difference of the fastener 10 shown in Fig. 1-7
The bolt head 200 rotated with the integrally connected of screw rod 201 and together with screw rod 201.
Referring to Figure 19 and 20, fastener 20 includes bolt and annular element 2, and bolt includes integrally connected and the spiral shell for rotating together
Bolt first 200 and the screw rod 201 with threaded portion 2011.First is formed on first end surfaces (lower surface in Figure 19) of bolt head
Faying face.Annular element 2 is coaxially disposed with bolt head, and screw rod 201 passes through the through hole of annular element.First side of the annular element
(upside in Figure 19) is formed with the first recess 21, and the second faying face is formed on the bottom of first recess；Wherein, it is described
First faying face is accommodated in first recess 21, and first faying face is combined with the second faying face so that when
The pine of bolt head 200 hinders the further pine of the bolt head 200 to move back when moving back.
For the structure and knot of the second faying face in the first faying face of bolt head and the first recess 21 of annular element
Conjunction mode is identical with the structure and combination of the fastener shown in Fig. 1-7, will not be repeated here.
As shown in figure 20, the fixation with bolt hole will be installed to by fastener 203 using the fastener 20 shown in Figure 19
When on framework 202, annular element 2 is enclosed within screw rod 202 first, and a part for bolt head is installed to the first of annular element 2
In recess 21, the first faying face is set to be combined with the second faying face；Afterwards, screw rod 201 is made to pass through by fastener 203 and be aligned
The upper screwed hole of fixed frame 202；Finally, the entirety of wrench device 3 is enclosed within the bolt head 200 and annular element 2 of fastener, is rotated
Wrench device 3, applies pretightning force and will be fastened on fixed frame 202 by fastener 204.
Fastener according to the above-mentioned various embodiments of the utility model, by tightening piece and annular element with cooperation
With so that tightening piece is more loose to be moved back, and screw fastening clamp force is tighter, causes tightening piece to release, and one is entered so as to play suppression tightening piece
The effect that step pine moves back.Even if so that can also realize the connection fastening of safety and stability under severe operating mode.Further, by inciting somebody to action
First protuberance of tightening piece is contained in the first recess of annular element, realizes the more stable positioning for tightening piece,
And the faying face of tightening piece and annular element is hidden within annular element, the foreign matter under severe operating mode is reduced and is entered combination
So as to influence the possibility of fastener performance between face so that the more stable reliability of fastener.Also, because the fastener is for can be from
By the fastener of dismounting on tightening member, its anti-loosening property is not influenceed by locking and release number of times, while its anti-loosening property is not
By lubricating and pretightning force size is influenceed.Reliable connection can be also kept in the case where there is the occasion of high vibration or heavy load.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this area
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of the structure described in various embodiments
Independent assortment can be carried out in the case of prominent.
After preferred embodiment of the present utility model is described in detail, those of ordinary skill in the art can be clearly
Solution, various change can be carried out in the case where the protection domain of appended claims and spirit is not departed from and is changed, and the utility model is also
It is not only restricted to the implementation method of examples cited embodiment in specification.
Claims (20)
1. a kind of fastener, including：
Tightening piece, is configured to be combined to fasten by fastener with screw rod is coordinated, and is formed on the first end surfaces of the tightening piece
First faying face；And
Annular element, the annular element is coaxially disposed with the tightening piece, and the first side of the annular element is formed with the first recess,
Second faying face is formed on the bottom of first recess；
Wherein, first faying face is accommodated in first recess, first faying face and the second faying face phase
With reference to so that hinder the further pine of the tightening piece to move back when tightening piece pine moves back.
2. fastener according to claim 1, wherein, the tightening piece includes：
Main part；And
First protuberance, first protuberance extends from one end of the main part, and first faying face is formed in described
On the end face of the first protuberance.
3. fastener according to claim 2, wherein, first faying face is provided with least one first joint portions,
Second faying face is provided with least one second joint portions being engaged with the first joint portion, and first joint portion includes
The the first oblique faying face for extending in a circumferential direction and the second blocking surface, second joint portion include extending in a circumferential direction
The first oblique faying face and the second blocking surface, wherein the first oblique faying face of first joint portion is configured to be combined with second
The first oblique faying face in portion is engaged contact, and the second blocking surface of first faying face is configured to the second joint portion
Two blocking surfaces are engaged contact, to realize the combination of tightening piece and the annular element.
4. fastener according to claim 3, wherein, the first oblique faying face of first joint portion and the second joint portion
The first oblique faying face be respectively formed the helicoid with identical lift angle to cooperate, the lead angle of the helicoid is more than institute
State the externally threaded lead angle for coordinating screw rod, the spiralling direction of the helicoid on the second joint portion of the annular element
With it is described it is externally threaded screw it is in opposite direction.
5. the fastener according to claim 3 or 4, wherein, first joint portion and the second joint portion being engaged are equal
It is two.
6. the fastener according to claim 3 or 4, wherein, the second blocking surface of first joint portion and second is combined
Second blocking surface in portion is identical with the angle of horizontal plane, and is obtuse angle or right angle.
7. fastener according to claim 1, wherein, second side relative with first side of the annular element is formed
There is ratchet, the ratchet is constructed such that annular element and is more than between nut and annular element by the frictional force between tightening member
Frictional force, to cause that annular element is remained stationary as relative to by tightening member when tightening piece is relative to screw bolt loosening.
8. fastener according to claim 7, wherein, the ratchet is configured in annular element near by tightening member
Side surface on be arranged radially.
9. fastener according to claim 1, wherein, the tightening piece have four-prism shape, positive six prismsby shape or
Quincunx outer surface, the outer peripheral face of the annular element is formed with plum blossom side, so that wrench device drives the tightening piece and annular
Part is rotated together.
10. fastener according to claim 9, wherein, the plum blossom of the annular element while while number be with prismatic
More than 3 times of the side number of the tightening piece.
11. fastener according to claim 9 or 10, wherein：
The wrench device includes：
Cylindric main part；
First spanner portions, are arranged on the main part inner side, and be configured to be engaged with the plum blossom side of the annular element；And
Second spanner portions, are arranged on the main part inner side, and be configured to be engaged with the lateral surface of the tightening piece.
12. fasteners according to claim 1, wherein, it is provided with multiple drive holes in the first side of the annular element.
13. fasteners according to claim 12, wherein, also form what is connected with the drive hole on the annular element
The guiding groove of arc.
14. fasteners as claimed in claim 2, wherein, the tightening piece is nut, the nut and the cooperation screw rod spiral shell
Line coordinates.
15. fasteners according to claim 14, wherein, the nut is configured to both with the annular element can not be complete
It is fully separating.
16. fasteners according to claim 15, wherein, the tightening piece further includes the second protuberance of annular,
Second protuberance extends from first protuberance in the inner side of first faying face, to be contained in the annular element
In.
17. fasteners according to claim 16, wherein, it is convex that the end of second protuberance forms outwardly
Edge, the second side of the flange and the annular element coordinates, to allow the nut to be rotated relative to the annular element but can not
Depart from from the annular element.
18. fasteners according to claim 17, wherein, the flange is in second protuberance from the annular element
The first side through the annular element reach the second side after by Sheet Metal Forming Technology formation.
19. fasteners according to claim 14, wherein, the nut is split part with the annular element.
20. fasteners as claimed in claim 1, wherein, the tightening piece is bolt head, the bolt head and the cooperation spiral shell
Bar integrally connected is simultaneously rotated together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621245604.3U CN206190709U (en) | 2016-11-16 | 2016-11-16 | Fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621245604.3U CN206190709U (en) | 2016-11-16 | 2016-11-16 | Fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190709U true CN206190709U (en) | 2017-05-24 |
Family
ID=58726115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621245604.3U Active CN206190709U (en) | 2016-11-16 | 2016-11-16 | Fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190709U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071653A (en) * | 2016-11-16 | 2018-05-25 | 孙愉后 | Fastener |
| CN108591228A (en) * | 2018-05-28 | 2018-09-28 | 忻建国 | A kind of anti-loosen screw nut component and stop nut lock |
| CN110397657A (en) * | 2018-04-24 | 2019-11-01 | 福建省晋江市励精汽配有限公司 | Nut anti-looseness device, clamp device and wheel |
-
2016
- 2016-11-16 CN CN201621245604.3U patent/CN206190709U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071653A (en) * | 2016-11-16 | 2018-05-25 | 孙愉后 | Fastener |
| CN110397657A (en) * | 2018-04-24 | 2019-11-01 | 福建省晋江市励精汽配有限公司 | Nut anti-looseness device, clamp device and wheel |
| CN108591228A (en) * | 2018-05-28 | 2018-09-28 | 忻建国 | A kind of anti-loosen screw nut component and stop nut lock |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180205 Address after: 362271 Fujian city of Quanzhou province Jinjiang Economic Development Zone East ANN Patentee after: Fujian Jinjiang City Lijing Automobile Parts Co., Ltd. Address before: 362271 Fujian city of Quanzhou province Jinjiang Economic Development Zone East Road No. 26, Anne Patentee before: Sun Yuhou |
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| TR01 | Transfer of patent right |