CN207485832U - Fastener - Google Patents
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- CN207485832U CN207485832U CN201721215091.6U CN201721215091U CN207485832U CN 207485832 U CN207485832 U CN 207485832U CN 201721215091 U CN201721215091 U CN 201721215091U CN 207485832 U CN207485832 U CN 207485832U
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Abstract
A kind of fastener, including tightening piece and annular element.At least two first engaging portions are provided in the tightening piece, the annular element is provided at least two second engaging portions.Wherein, each first engaging portion, second engaging portion is respectively included in the first spiral faying face and the first blocking surface extended on circumferencial direction, wherein, the first spiral faying face along the cross-sectional shape of the radial direction of fastener and the cross-sectional shape of the second spiral faying face along the radial direction be cooperate arc, and, the first spiral faying face and the second spiral faying face are respectively provided with identical helix angle to cooperate, the helix angle is more than the externally threaded lead angle of the cooperation screw rod, the spiralling direction of the second spiral faying face with described externally threaded to screw direction opposite.Above structure inhibits the further pine of tightening piece to move back and reduces tightening piece and the abrasion of annular element and ensure that anti-loosening property is stablized, and can improve the radial direction shock resistance of fastener.
Description
Technical field
The utility model is related to a kind of locking fasteners more particularly to a kind of further pine for realizing inhibition tightening piece to move back
Fastener.
Background technology
Fastener is applied in all trades and professions of connection fastening demand, such as in vehicle, building machinery, agricultural machine
It is all widely used in tool, manufacture machinery etc..For in 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 by the vibration of all directions and impacting for load, this cause fastener compared with
It easily loosens, so as to which the reduction of fastener function be caused even to fail.Cause very big security risk.
Currently used fastener locking method generally comprises the locking of non-removable locking scheme and increasing friction force
Scheme.Non-removable locking scheme is changed into detachable threaded connection not using welding, bonding or rushing a little modes such as riveting
It is detachable to be threadedly coupled.In non-removable locking scheme, fastener cannot be reused, and troublesome in poeration, commonly use Mr. Yu
A little important events for requiring anti-loosening property high and to be not required to dismounting.The locking scheme of increasing friction force is using increasing between screw thread or spiral shell
The method of the frictional force of bolt head and nut end face is locking to achieve the purpose that.The locking scheme of increasing friction force is not limited by space
System, can dismantle repeatedly, but reliability is poor, in work after a certain period of time, can reduce anti-loosing effect because of reasons such as vibrations.
Utility model content
The fastener that exemplary embodiment according to the present utility model is provided, by between tightening piece and annular element
Its helix angle be more than cooperation screw rod externally threaded lead angle screw engagement face cooperation so that tightening piece is more loose
It moves back, it is tighter for the coupling mechanism force of tightening piece, cause tightening piece that can not loosen, so as to play the work that the further pine of tightening piece is inhibited to move back
With.Further, by the cross-sectional shape of tightening piece and the radial direction along fastener of annular element be cooperate arc
The combination of the spiral faying face of shape, the guidance quality of the spiral faying face of arc is more preferable, and the abrasion of reduction tightening piece and annular element is simultaneously
Ensure that anti-loosening property is stablized, and the spiral faying face of the mutual cooperation of arc-shaped cross-section also generates the power for resisting radial impact, carries
The radial direction shock resistance of high fastener.
According to the embodiment of the utility model one side, a kind of fastener is provided, including：
Tightening piece is configured to be combined with fastening by fastener with cooperation screw rod, on the first end surfaces of the tightening piece
It is provided at least two first engaging portions；And annular element, the annular element are coaxially disposed and are used cooperatively with the tightening piece,
At least two second engaging portions are provided on second end surfaces of the annular element, each first engaging portion is corresponding to one
The second engaging portion be combined；Wherein, each first engaging portion includes the first spiral extended in a circumferential direction combination
Face and the first blocking surface, each corresponding second engaging portion include the second spiral faying face extended in a circumferential direction and
Second blocking surface, the first spiral faying face are configured to match with the second spiral faying face and contact, the first blocking surface quilt
It is configured to match with the second blocking surface and contact, to realize the combination of tightening piece and the annular element；Wherein, first spiral
Cross section shape of the faying face along the cross-sectional shape and the second spiral faying face of the radial direction of fastener along the radial direction
Shape is the arc to cooperate, also, the first spiral faying face and the second spiral faying face are respectively provided with identical spiral liter
To cooperate, the helix angle is more than the externally threaded lead angle of the cooperation screw rod at angle, and second spiral combines
The spiralling direction in face with described externally threaded to screw direction opposite.
An exemplary embodiment according to the present utility model, the side shape towards the tightening piece of the annular element
Into there is the first recess, the bottom of first recess is formed with second end surfaces.
An exemplary embodiment according to the present utility model, the tightening piece include：First main part and first
Protrusion, first protrusion extend from one end of first main part and are suitable for being contained in first recess,
First end surfaces are formed on the end face of first protrusion.
An exemplary embodiment according to the present utility model, first blocking surface and the second blocking surface and horizontal plane
Angle it is identical, and be obtuse angle or right angle.
An exemplary embodiment according to the present utility model, the fastener further include：The gasket of annular, the pad
Piece includes：Towards the first surface by fastener, be formed with prominent tooth on the first surface, the tooth with it is described
It is combined by fastener, to prevent the gasket relative to by the rotation of fastener；And opposite with the first surface
Two surfaces, the second surface are suitable for being combined with the annular element so that are moved back in the tightening piece relative to by fastener pine
Shi Suoshu annular elements are remained stationary as relative to gasket and by fastener.
An exemplary embodiment according to the present utility model, the tooth include：From the radial inner end of the gasket to
The first part of outer extension；And second part, the second part is from the radial outer end of the first part to the gasket
Radially outward edge extension, and the first part and the second part are at an angle.
An exemplary embodiment according to the present utility model, the tooth curvedly extend.
An exemplary embodiment according to the present utility model, the tooth are arranged radially substantially.
An exemplary embodiment according to the present utility model, the tooth have tip, and the tip is adapted for insertion into
It is described by fastener.
An exemplary embodiment according to the present utility model, the gasket include the edge court from the second surface
The inclined surface of extension is tilted to the side of the gasket, the area of second surface so as to be combined with the annular element is less than institute
State the area of first surface.
An exemplary embodiment according to the present utility model, the annular element include：Second main part and from institute
State the flange portion that the second main part extends radially outwardly；Wherein, the flange portion is combined with the second surface of the gasket.
An exemplary embodiment according to the present utility model is formed with ratchet, the ratchet on the second surface
Be combined with the annular element so that in the tightening piece relative to annular element described when being moved back by fastener pine relative to gasket and
It is remained stationary as by fastener.
An exemplary embodiment according to the present utility model is provided with annular projection on first protrusion；
The annular groove suitable for accommodating the annular projection is formed on the side wall of first recess, the annular is recessed
The axial height of slot is more than the axial height of the annular projection, can be movable relatively ground by the tightening piece and the annular element
It links together.
An exemplary embodiment according to the present utility model, the annular element include：Second main part and second
Protrusion, second protrusion extends from second main part in radially inner side towards gasket, to be contained in the gasket
Endoporus in.
An exemplary embodiment according to the present utility model, the end of second protrusion form outwardly projecting
Flange, the gasket towards the bottom surface that the second recess, the flange and recess are formed with by the side of fastener,
The annular element to be allowed to be rotated relative to the gasket but cannot be detached with the gasket.
An exemplary embodiment according to the present utility model, the tightening piece are nut, and the nut is matched with described
Close screw flight cooperation.
An exemplary embodiment according to the present utility model, the tightening piece are bolt head, the bolt head and institute
It states cooperation screw rod integrally connected and rotates together.
The fastener of the various embodiments described above according to the present utility model passes through its spiral between tightening piece and annular element
Lift angle is more than the cooperation in the screw engagement face of the externally threaded lead angle of cooperation screw rod so that tightening piece is more loose to move back, for twisting
The coupling mechanism force of tight part is tighter, causes tightening piece that can not loosen, so as to play the role of that the further pine of tightening piece is inhibited to move back；Further
Ground, the cross-sectional shape by tightening piece and the radial direction along fastener of annular element are the spiral knot of the arc to cooperate
The combination in conjunction face, the guidance quality of the spiral faying face of arc is more preferable, reduces the abrasion of tightening piece and annular element and ensures locking property
It can stablize, and the spiral faying face of the mutual cooperation of arc-shaped cross-section also generates the power for resisting radial impact, improves fastener
Radial direction shock resistance.
Description of the drawings
The utility model with reference to the accompanying drawings to be further described, wherein：
Fig. 1 is the three-dimensional signal of the decomposition for the nut fastener for showing a kind of exemplary embodiment according to the present utility model
Figure；
Fig. 2 is the stereoscopic schematic diagram for another decomposition for showing fastener shown in FIG. 1；
Fig. 3 is the stereoscopic schematic diagram shown after fastener combination shown in FIG. 1；
Fig. 4 is another stereoscopic schematic diagram shown after fastener combination shown in FIG. 1；
Fig. 5 is the partial schematic sectional view shown when fastener shown in FIG. 1 does not combine；
Fig. 6 is the partial schematic sectional view shown after fastener combination shown in FIG. 1；
Fig. 7 is the stereoscopic schematic diagram for the tightening piece for showing an exemplary embodiment according to the present utility model；
Fig. 8 is the stereoscopic schematic diagram for the annular element for showing an exemplary embodiment according to the present utility model；
Fig. 9 is another stereoscopic schematic diagram for showing annular element shown in Fig. 8；
Figure 10 is the stereoscopic schematic diagram for the gasket for showing an exemplary embodiment according to the present utility model；
Figure 11 is another stereoscopic schematic diagram for showing gasket shown in Fig. 10；
Figure 12 is the partial sectional view for showing nut tightening piece shown in Fig. 7, and shows the spiral knot of nut tightening piece
The helix angle in conjunction face；
Figure 13 is the externally threaded spiral liter of cooperation screw rod for showing to coordinate with the tightening piece of the embodiment of the utility model
Angle；And
Figure 14 is the solid of the decomposition for the bolt fastener for showing another exemplary embodiment according to the present utility model
Schematic diagram.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
In specification, the same or similar drawing reference numeral indicates the same or similar component.It is following real to the utility model with reference to attached drawing
The explanation for applying mode is intended to explain the overall utility model design of the utility model, and is not construed as to this practicality
A kind of novel limitation.
In addition, in the following detailed description, for ease of explaining, many concrete details are elaborated to provide to present disclosure
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments without these specific details can also
It is carried out.In other cases, well known construction and device diagrammatically embodies to simplify attached drawing.
Utility model design generally according to the present utility model provides a kind of fastener, including：Tightening piece, quilt
It is configured to be combined with fastening by fastener with cooperation screw rod, at least two first is provided on the first end surfaces of the tightening piece
Engaging portion；And annular element, the annular element are coaxially disposed and are used cooperatively with the tightening piece, the second end of the annular element
At least two second engaging portions are provided on surface, each first engaging portion, second engaging portion corresponding with one is mutually tied
It closes；Wherein, each first engaging portion includes the first spiral faying face and the first blocking surface that extend in a circumferential direction, often
A corresponding second engaging portion includes the second spiral faying face and the second blocking surface that extend in a circumferential direction, the first spiral shell
Rotation faying face, which is configured to match with the second spiral faying face, to be contacted, and first blocking surface is configured to and the second blocking surface
Contact is matched, to realize the combination of tightening piece and the annular element；Wherein, diameter of the first spiral faying face along fastener
The cross-sectional shape of cross-sectional shape and the second spiral faying face along the radial direction to direction is the arc to cooperate,
Also, the first spiral faying face (111) and the second spiral faying face (211) are respectively provided with identical helix angle with phase interworking
It closes, the helix angle is more than the externally threaded lead angle of the cooperation screw rod, in the spiral of the second spiral faying face
The direction risen with described externally threaded to screw direction opposite.
According to a utility model exemplary embodiment, the fastener of the utility model can be applied to operation
In machinery, be used for example as creeper tread in engineering truck, chassis member connector.Due to the severe use work of Work machine
Condition causes with larger vibration and larger load, especially transverse load in fastener in use
Tightening piece can be loosened with the passage of usage time.
A kind of embodiment according to the present utility model, the tightening piece have four-prism shape, regular hexagonal prism shape or other
Regular prism shape.As shown in figures 1-13, the tightening piece 1 is nut, the nut and cooperation screw flight cooperation.Nut 1 can
To be the common nut such as tetragonal nut, hex nut.In another embodiment, as shown in figure 14, the tightening piece is bolt
Head, the bolt head is with coordinating screw rod integrally connected and rotating together.In this way, bolt head and screw rod form a bolt.Bolt
Head can be quadrangle bolt head, hexagonal bolt head or other common bolt head shapes.
Referring to Fig. 1-13, by tightening piece for the fastener of the utility model embodiment is described for nut.
Figure 12 is the partial sectional view for showing nut tightening piece shown in Fig. 7, and shows the spiral knot of nut tightening piece
The helix angle in conjunction face.Figure 13 is to show to coordinate the externally threaded of screw rod with what the tightening piece of the embodiment of the utility model coordinated
Helix angle.
An exemplary embodiment according to the present utility model, φ are the first spiral faying face 111 and the second spiral knot
The helix angle in conjunction face 221.In fig. 13, α is the external screw thread of the screw rod coordinated with the tightening piece of the embodiment of the utility model
Helix angle, since the nut 1 as tightening piece and screw rod coordinate, the helix angle of the internal thread of nut tightening piece 1
Also it is α.
An exemplary embodiment according to the present utility model, the first spiral faying face 111 and the second spiral knot
Conjunction face 211 is respectively provided with identical helix angle φ to cooperate, and the helix angle φ is more than the outer spiral shell of the cooperation screw rod
The lead angle α of line, the spiralling direction of the second spiral faying face 211 externally threaded screw direction phase with described
Instead.
According to the embodiment of above-mentioned example, annular element 2 by with by the integrated structure of fastener and relative to screw rod
100 is static, and nut 1 moved back relative to annular element 2 along the first spiral faying face 111 and 112 pine of the second spiral faying face it is predetermined
In the case of angle, described in the helix angle φ of the first spiral faying face 111 and the second spiral faying face 211 is more than
Coordinate the externally threaded lead angle α of screw rod, the outside of nut 1 radially is in the first spiral faying face 111 and the second spiral knot
It is more than in nut relative to climb altitude of the annular element 2 on axis direction (upwardly direction in Fig. 1) under the guiding in conjunction face 211
Height is moved back relative to pine of the screw flight on axis direction (upwardly direction in Fig. 1) at the screw thread of side, since screw rod is opposite
Static in annular element, so that nut 1 stretches matched screw rod so that the internal thread of nut and screw rod it is outer
Coupling mechanism force bigger between screw thread, screw rod, which generates, further compresses nut the reaction force of annular element so that annular element is into one
Step is compressed by fastener.Therefore, annular element has the function of lock washer.
Those skilled in the art it is also understood that corresponding to different helix angles, the internal thread of screw connector
Lead angle (namely externally threaded lead angle of cooperation screw rod) will also adjust accordingly.
Further, exemplary embodiment according to the present utility model, as shown in Fig. 1,2,7,8, due to described first
Spiral faying face 111 is along the cross-sectional shape and the second spiral faying face 211 of the radial direction of fastener along the radial direction
Cross-sectional shape be cooperate arc, the mutual cooperation of two arcwall faces is for opposite between tightening piece 1 and annular element 2
Guiding function is played in movement.Moreover, because cross-sectional shape radially is arc, therefore, when tightening piece or annular
When part is impacted by horizontal direction, the contact of two spiral faying faces of arced cross sectional shape can generate in the radial direction
Resistance, so as to play the cushioning effect for side knock to a certain extent.
An exemplary embodiment according to the present utility model, the annular element towards can be with by the side of fastener
Ratchet (not shown) is formed with, the ratchet is constructed such that annular element 2 and is more than nut 1 by the frictional force between tightening member
With the frictional force between annular element 2 so that annular element 2 is protected relative to by tightening member when nut 1 is relative to screw bolt loosening
It holds motionless.It will be understood by those skilled in the art that in addition to aforesaid way, various methods well known in the art can also be applied, only
It can be realized such that annular element 2 is remained stationary as relative to by tightening member when nut 1 is relative to screw bolt loosening.
An exemplary embodiment according to the present utility model, as shown in Figure 1,5, the annular element 2 towards described
The side of tightening piece 1 is formed with the first recess 22, and the bottom of first recess 22 is formed with second end surfaces.
According to the embodiment of above-mentioned example, the first end surfaces for being formed in tightening piece 1 can be by being combined into
It states in the first recess 22 and the second end surfaces on the bottom of the first recess 22 are combined, so as to by tightening piece 1 and annular
The mating surface of part 2 is contained in the first recess 22 of annular element, realizes the more stable positioning for tightening piece 1, and
And the faying face of tightening piece 1 and annular element is hidden within annular element, reduce the foreign matter under severe operating mode and enter combination
So as to influence the possibility of fastener locking performance between face so that fastener is more stable and reliable.
An exemplary embodiment according to the present utility model, as shown in Figure 1,5, the tightening piece 1 includes：First master
11 and first protrusion 12 of body portion, first protrusion 12 extend from one end of first main part 11 and are suitable for holding
It is contained in first recess 22, first end surfaces are formed on the end face of first protrusion.
According to the embodiment of above-mentioned example so that tightening piece 1 and the faying face of annular element 2 are formed in annular realizing
While in the recess of part 2, additionally it is possible to so that the prism shape and outer diameter of the first main part 11 of tightening piece 1 and annular element 2
Prism shape and outer diameter match.It further prevents between foreign matter leaks into faying face, and facilitates the manufacture of fastener.
An exemplary embodiment according to the present utility model, as shown in Figure 1,5, first blocking surface 112 and
Two blocking surfaces 212 are identical with the angle of horizontal plane, and are obtuse angle or right angle.
An exemplary embodiment according to the present utility model, as shown in Fig. 1,7,8, the fastener further includes：Ring
The gasket 3 of shape, the gasket 3 include：Towards the first surface 31 by fastener, it is formed on the first surface 31
Prominent tooth 312, the tooth 312 are combined with described by fastener, the gasket 3 to be prevented to turn relative to by fastener
It is dynamic；And the second surface 32 opposite with the first surface 31, the second surface 32 are suitable for and the 2 phase knot of annular element
It closes so that kept not relative to annular element 2 described when being moved back by fastener pine relative to gasket and by fastener in the tightening piece 1
It is dynamic.
According to the embodiment of above-mentioned example, which directly contacts with by fastener, prominent tooth on first surface 31
312 are combined with by fastener, prevent the rotation of gasket 3.The embodiment of property according to the example, by setting the gasket 3 friction knot
Close by fastener, so as to can when tightening threaded fastener smooth and easily operating nut 1 and annular element 2, and provide pair
The protection by fastening workpiece surface in contact condition.
An exemplary embodiment according to the present utility model, as shown in figure 11, the tooth 312 includes：From the pad
The outwardly extending first part 3121 of radial inner end of piece；And second part 3122, the second part 3122 is from described
The radial outer end of a part 3121 extends, and the first part 3121 and described second to the radially outward edge of the gasket
Part 3122 is at an angle.
According to the embodiment of above-mentioned example, using the tooth of this structure, it can effectively increase gasket 3 and by fastener
Between frictional force, avoid when tightening piece 1 loosens gasket relative to by fastener rotation.
An exemplary embodiment according to the present utility model, the tooth 312 curvedly extend (not shown).It is this
The form of tooth can also effectively improve gasket and by the frictional force between fastener.
An exemplary embodiment according to the present utility model, as shown in figure 11, the substantially radial row of tooth 312
Row.
An exemplary embodiment according to the present utility model, as shown in figure 11, the tooth 312 have tip, described
Tip is adapted for insertion into described by fastener.
An exemplary embodiment according to the present utility model, as shown in Figure 10, the gasket 3 are included from described second
The edge on surface 32 tilts the inclined surface 322 of extension towards the side of the gasket 3, and the so as to be combined with the annular element
The area on two surfaces 32 is less than the area of the first surface 31.
According to the embodiment of above-mentioned example, since the area of first surface 31 is more than the area of second surface 32 so that
Gasket with it is larger by the contact area of fastener, ensure that during nut pine moves back gasket is kept not relative to by fastener
It is dynamic.
An exemplary embodiment according to the present utility model, as shown in Figure 1, 2, the annular element 2 includes：Second master
Body portion 21 and the flange portion 24 to extend radially outwardly from second main part 21；Wherein, the flange portion 24 and the pad
The second surface 32 of piece 3 is combined.
By the flange portion 24 realization and the combination of the more large surface of gasket 3, the frictional force of bigger is provided for annular element 2,
So as to be remained stationary as in tightening piece 1 relative to annular element 2 described when being moved back by fastener pine relative to gasket and by fastener.
An exemplary embodiment according to the present utility model as shown in Figure 1, 2, is formed on the second surface 32
Ratchet 321, the ratchet 321 are combined with the annular element 2 so that when the tightening piece 1 by fastener pine relative to being moved back
The annular element 2 is remained stationary as relative to gasket and by fastener.
An exemplary embodiment according to the present utility model, as shown in Figure 1, 2, the annular element 2 towards described
Ratchet (not shown) is formed with by the side of fastener, the ratchet is constructed such that in the tightening piece 1 relative to tight
Firmware pine when moving back the annular element 2 remained stationary as relative to gasket and by fastener.It is described according to an exemplary embodiment
Ratchet 321 is arranged radially.
The ratchet of the above-mentioned compact arranged radial setting to generate larger friction between annular element 2 and gasket 3
Power.During tightening piece 1 loosens, since gasket 3 is relative to by fastener remains stationary, the annular element 2 and gasket 3 it
Between frictional force under the action of, the annular element 2 is also relative to gasket 3 and by fastener remains stationary.
An exemplary embodiment according to the present utility model as shown in Figure 1, 2, is set on first protrusion 12
There is annular projection 121；The annular groove suitable for accommodating the annular projection 121 is formed on the side wall of first recess 22
221, the axial height of the annular groove 221 is more than the axial height of the annular projection 121, by 1 He of tightening piece
The annular element 2 link together and can be to axial movement.
By using the annular projection and matched annular groove so that tightening piece 1 and annular element 2 can not be discretely
It links together, but can be with relative axial movement and rotation.
An exemplary embodiment according to the present utility model, as shown in Fig. 2,5,6, the annular element 2 includes：Second
21 and second protrusion 23 of main part, second protrusion is from second main part 21 in radially inner side towards gasket 3
Extension, to be contained in the endoporus of the gasket 3.
An exemplary embodiment according to the present utility model, as shown in Fig. 2,5,6, the end of second protrusion 23
Portion forms outwardly projecting flange 231, and the gasket is formed with the second recess, the flange towards by the side of fastener
With the bottom surface of recess, the annular element 2 to be allowed to be rotated relative to the gasket 3 but cannot be detached with the gasket 3.
According to the embodiment of above-mentioned example, the inseparable of the annular element 2 and gasket 3 is realized by flange 231
Connection, but can relatively rotate between the two.
However those skilled in the art are it is also to be understood that annular element 2 and gasket 3 can not also directly set above-mentioned flange knot
Structure, the two can be separation, be applied in combination in use.
An exemplary embodiment according to the present utility model, the flange 23 are from described in second protrusion
The separate side by fastener of gasket 3 passes through the annular element to be formed through the stamping process after reaching second recess
's.
However those skilled in the art are it is also to be understood that flange 23 can also be formed using other routine techniques.
Below in conjunction with the accompanying drawings 1-13 describe the nut fastener of embodiment according to the present utility model it is locking make it is used
Journey.
According to an exemplary embodiment, the fastener of the utility model embodiment is for example used applied to engineering truck
When fastening is by fastener, by nut 1, annular element 2 and gasket 3 (it will be appreciated by those skilled in the art that not including gasket
3 and the embodiment that only includes the fastener of nut 1 and annular element 2 can equally be used as one embodiment reality of the utility model
It applies.Or three be separation single part or wherein annular element 2 it is inseparable with nut 1 and detached with gasket 3,
Or annular element 2 and nut 1 are separable and inseparable with gasket 3, can be used as an illustrative implementation of the utility model
Example is implemented), it is nested on cooperation screw rod, and twist using sleeve barrel tool nut 1 and annular element 2 simultaneously with by fastener entirety
It is tightened onto on cooperation screw rod, applies pretightning force and fastening will be clamped by fastener.In installation process, due to the presence of gasket 3,
Gasket is substantially vertical in by the pressure of fastener for the power applied by fastener, and tightens the rotation of nut 1 and annular element 2
Power is rarely passed to gasket and by the contact surface between fastener, thus reduce to by the friction on contact surface surface and
It scratches.
The pine that can generate nut 1 with the passage of usage time moves back, due to the first spiral faying face and the second spiral
Faying face is respectively provided with identical helix angle to cooperate, and the helix angle is more than the cooperation screw flight lift angle,
The spiralling direction of the second spiral faying face with it is described it is externally threaded screw direction on the contrary, annular element 2 relative to
Coordinate screw rod static in the case that nut 1 moves back certain angle relative to screw rod pine, the lateral surface of nut 1 is (by the first spiral knot
Conjunction face and the second spiral faying face with reference to and the side that supports) it is (in Fig. 1,3 upward in axis direction relative to annular element 2
Direction) on climb altitude be more than nut medial surface (medial surface where the internal thread of nut) relative to screw flight in axis
The pine of (upwardly direction in Fig. 1) moves back height on line direction, due to screw rod, annular element 2, gasket 3 and by fastener be it is static,
So that 1 pair of outer spiral shell of the stretching of cooperation screw rod, the i.e. internal thread of nut and cooperation screw rod being combined with its internal thread of nut
Coupling mechanism force increase between line, the coupling mechanism force inhibit the further pine of nut 1 to move back.And screw rod is coordinated to generate phase to nut 1
The anti-pulling force towards annular element 2 so that nut 1 downwardly against the annular element 2,2 further compress gasket 3 of annular element and by
Fastener, therefore annular element 2 and gasket 3, gasket 3 and by the frictional force bigger between fastener, inhibit the movement of fastener.This
Sample, nut is more loose to move back, and the stretching to screw rod generated due to helix angle and the difference of lead angle is bigger, so as to coupling mechanism force
It is bigger, nut is caused to be less susceptible to loosen.
When disassembly process starts, the ratchet between annular element 2 and gasket 3 generates rotating friction force, the rotation to gasket 3
Frictional force is less transmitted to due to the presence of gasket 3 by fastener surface, is in direct contact relative to annular element 2 by fastener
For, it significantly reduces to by the damage of fastener surface.
Figure 14 is the decomposition diagram for the fastener for showing another exemplary embodiment according to the present utility model.Figure 14
The difference lies in the fastener shown in Figure 14, tightening piece is shown fastener with the fastener shown in Fig. 1-13
With 100 ' integrally connected of screw rod and the bolt head 1 ' rotated together with screw rod 100 '.
Referring to Figure 14, fastener includes bolt and annular element 2 ' and gasket 3 ', and bolt includes integrally connected and turns together
Dynamic bolt head 1 ' and the screw rod 100 ' with threaded portion.External screw thread is provided on screw rod.
In the fastener, other than tightening piece bolt head 1 ' is connected with screw rod 100 ', the other structures of tightening piece 1 ',
The structure of annular element 2 ', the structure of gasket 3 ', externally threaded lead angle and the helix angle of spiral faying face of shank of bolt
Relationship and action principle and mechanism, it is identical with the structure in the nut fastener shown in Fig. 1-13 and combination,
Details are not described herein.
The fastener of the various embodiments described above according to the present utility model passes through its spiral between tightening piece and annular element
Lift angle is more than the cooperation in the screw engagement face of the externally threaded lead angle of cooperation screw rod so that tightening piece is more loose to move back, for twisting
The coupling mechanism force of tight part is tighter, causes tightening piece that can not loosen, so as to play the role of that the further pine of tightening piece is inhibited to move back；Further
Ground, the cross-sectional shape by tightening piece and the radial direction along fastener of annular element are the spiral knot of the arc to cooperate
The combination in conjunction face, the guidance quality of the spiral faying face of arc is more preferable, reduces the abrasion of tightening piece and annular element and ensures locking property
It can stablize, and the spiral faying face of the mutual cooperation of arc-shaped cross-section also generates the power for resisting radial impact, improves fastener
Radial direction shock resistance.The use of gasket simultaneously is reduced by fastener surface damage suffered in the disassembly process of fastener
Wound, is protected by fastener surface.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this field
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of the structure described in various embodiments
It can be freely combined in the case of prominent.
After the preferred embodiment of the utility model is described in detail, those skilled in the art can be clear
Solution, in the protection domain for not departing from appended claims with that can carry out various change under spirit with changing, and the utility model is also
It is not only restricted to the embodiment of examples cited embodiment in specification.
Claims (17)
1. a kind of fastener, which is characterized in that including：
Tightening piece (1) is configured to be combined with fastening by fastener with cooperation screw rod, be set on the first end surfaces of the tightening piece
It is equipped at least two first engaging portions；And
Annular element (2), the annular element are coaxially disposed and are used cooperatively, the second end of the annular element with the tightening piece (1)
At least two second engaging portions are provided on surface, each first engaging portion, second engaging portion corresponding with one is mutually tied
It closes；
Wherein, each first engaging portion includes the first spiral faying face (111) extended in a circumferential direction and the first resistance
Block face (112), each corresponding second engaging portion include the second spiral faying face (211) extended in a circumferential direction and
Second blocking surface (212), the first spiral faying face (111) are configured to match with the second spiral faying face (211) and contact, institute
It states the first blocking surface (112) and is configured to match with the second blocking surface (212) and contact, to realize tightening piece (1) and the ring
The combination of shape part (2)；
Wherein, the first spiral faying face (111) combines along the cross-sectional shape of the radial direction of fastener and the second spiral
The cross-sectional shape of face (211) along the radial direction is the arc to cooperate, also, the first spiral faying face
(111) and the second spiral faying face (211) is respectively provided with identical helix angle to cooperate, and the helix angle is more than described
Coordinate the externally threaded lead angle of screw rod, the spiralling direction of the second spiral faying face and the externally threaded rotation
Tight direction is opposite.
2. fastener according to claim 1, which is characterized in that the annular element (2) towards the tightening piece (1)
Side is formed with the first recess (22), and the bottom of first recess (22) is formed with second end surfaces.
3. fastener according to claim 2, it is characterised in that：
The tightening piece (1) includes：
First main part (11) and
First protrusion (12), first protrusion (12) extend from one end of first main part (11) and are suitable for accommodating
In first recess (22), first end surfaces are formed on the end face of first protrusion.
4. fastener according to claim 1, which is characterized in that first blocking surface and the second blocking surface and horizontal plane
Angle it is identical, and be obtuse angle or right angle.
5. fastener according to claim 1, which is characterized in that the fastener further includes：
The gasket (3) of annular, the gasket (3) include：
Towards the first surface (31) by fastener, prominent tooth (312), institute are formed on the first surface (31)
It states tooth (312) to be combined by fastener with described, to prevent the gasket (3) relative to by the rotation of fastener；And
The second surface (32) opposite with the first surface (31), the second surface (32) suitable for the annular element (2)
It is combined so that relative to gasket and fastened relative to annular element (2) described when being moved back by fastener pine in the tightening piece (1)
Part remains stationary as.
6. fastener according to claim 5, which is characterized in that the tooth (312) includes：
From the outwardly extending first part of the radial inner end of the gasket；And
Second part, the second part extend from the radial outer end of the first part to the radially outward edge of the gasket,
And the first part and the second part are at an angle.
7. fastener according to claim 5, which is characterized in that the tooth (312) curvedly extends.
8. fastener according to claim 5, which is characterized in that the tooth (312) is arranged radially substantially.
9. fastener according to claim 5, which is characterized in that the tooth (312) has tip, and the tip is suitable for inserting
Enter to described by fastener.
10. fastener according to claim 5, it is characterised in that：
The gasket includes tilting the inclination of extension towards the side of the gasket (3) from the edge of the second surface (32)
Face, the area of second surface (32) so as to be combined with the annular element are less than the area of the first surface (31).
11. fastener according to claim 5, it is characterised in that：
The annular element (2) includes：
Second main part (21) and
The flange portion to extend radially outwardly from second main part (21)；
Wherein, the flange portion is combined with the second surface (32) of the gasket (3).
12. fastener according to claim 5, which is characterized in that be formed with ratchet on the second surface (32)
(321), the ratchet (321) is combined with the annular element (2) so that in the tightening piece (1) relative to by fastener pine
The annular element (2) remains stationary as relative to gasket and by fastener when moving back.
13. fastener according to claim 3, it is characterised in that：
Annular projection (121) is provided on first protrusion (12)；
The annular groove (221) suitable for accommodating the annular projection (121) is formed on the side wall of first recess (22),
The axial height of the annular groove (221) is more than the axial height of the annular projection (121), by the tightening piece (1)
It links together with can be movable relatively with the annular element (2).
14. fastener according to claim 5, it is characterised in that：
The annular element (2) includes：
Second main part (21) and
Second protrusion (23), second protrusion prolong from second main part (21) in radially inner side towards gasket (3)
It stretches, to be contained in the endoporus of the gasket (3).
15. fastener according to claim 14, it is characterised in that：
The end of second protrusion (23) forms outwardly projecting flange (231), the gasket towards by fastener
Side is formed with the bottom surface of the second recess, the flange and recess, to allow the annular element (2) relative to described
Gasket (3) is rotated but cannot be detached with the gasket (3).
16. according to claim 1-15 any one of them fasteners, which is characterized in that the tightening piece (1) is nut, described
Nut and the cooperation screw flight cooperation.
17. according to the fastener described in any one of claim 1-15, which is characterized in that the tightening piece (1) is bolt
Head, the bolt head screw rod integrally connected and rotate together with the cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721215091.6U CN207485832U (en) | 2017-09-21 | 2017-09-21 | Fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721215091.6U CN207485832U (en) | 2017-09-21 | 2017-09-21 | Fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485832U true CN207485832U (en) | 2018-06-12 |
Family
ID=62482246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721215091.6U Active CN207485832U (en) | 2017-09-21 | 2017-09-21 | Fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444455A (en) * | 2020-11-10 | 2021-03-05 | 中铁隆昌铁路器材有限公司 | Coarse-pitch embedded sleeve anti-loosening anti-pulling force test device and method |
| CN114278660A (en) * | 2022-01-04 | 2022-04-05 | 龚作钰 | Set for locking bolt subassembly that bullet tongue rigidity control was dismantled |
| WO2023010966A1 (en) * | 2021-08-02 | 2023-02-09 | 博世汽车转向系统（济南）有限公司 | Nut component for steering rack and steering rack |
-
2017
- 2017-09-21 CN CN201721215091.6U patent/CN207485832U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444455A (en) * | 2020-11-10 | 2021-03-05 | 中铁隆昌铁路器材有限公司 | Coarse-pitch embedded sleeve anti-loosening anti-pulling force test device and method |
| WO2023010966A1 (en) * | 2021-08-02 | 2023-02-09 | 博世汽车转向系统（济南）有限公司 | Nut component for steering rack and steering rack |
| CN114278660A (en) * | 2022-01-04 | 2022-04-05 | 龚作钰 | Set for locking bolt subassembly that bullet tongue rigidity control was dismantled |
| CN114278660B (en) * | 2022-01-04 | 2023-02-07 | 龚作钰 | Set for locking bolt subassembly that bullet tongue rigidity control was dismantled |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181218 Address after: 362271 Andong Park, Jinjiang Economic Development Zone, Quanzhou City, Fujian Province Patentee after: Fujian Jinjiang City Lijing Automobile Parts Co., Ltd. Address before: 362271 No. 26 Furen Road, Andong Garden, Jinjiang Economic Development Zone, Quanzhou City, Fujian Province Patentee before: Sun Yuhou |
|
| TR01 | Transfer of patent right |