CN205349976U - Tapered thread connects vicely - Google Patents
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- CN205349976U CN205349976U CN201520945341.6U CN201520945341U CN205349976U CN 205349976 U CN205349976 U CN 205349976U CN 201520945341 U CN201520945341 U CN 201520945341U CN 205349976 U CN205349976 U CN 205349976U
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Abstract
The utility model relates to a tapered thread connects vicely. It has solved current tapered thread connects vicely auto -lock ability subalternation technical problem. Including external screw thread and internal thread, the external screw thread includes outside helicoid and first end helicoid, and the shape of outside helicoid is the same with rotating body's spiral lateral surface shape, and the shape of first end helicoid is the same with the shape of the spiral terminal surface of the unanimous one end of above -mentioned rotating body axial displacement direction, and the internal thread includes inboard helicoid and second end helicoid, and the shape of inboard helicoid is the same with rotating body's spiral lateral surface shape, the shape of second end helicoid the same with the shape of the spiral terminal surface of above -mentioned rotating body axial displacement direction unanimity one end. The advantage lies in: the locking force is big, and the load value is big, and anti -loosening performance is good, and mechanical seal is effectual, and stability is good, appears the pine in the time of preventing to connect and takes off the phenomenon, has self -locking function.
Description
Technical field
This utility model belongs to fastener device technical field, especially relates to a kind of tapered thread auxiliary connection.
Background technology
On cylinder or circular cone parent surface, the continuous projection with regulation cross sectional shape formed along helix is called that screw thread, screw thread are to realize standardized frame for movement key element the earliest, is widely used in all trades and professions.Kind and the form of screw thread are more, and the screw thread formed at periphery is called cylindrical thread, and the screw thread formed at conical surface is called tapered tread, and the screw thread formed in end face surface such as cylinder or circular cone stage bodies is called flat thread；The screw thread formed at parent outer round surface is called external screw thread, and the screw thread formed at parent inner circle hole surface is called female thread, and the screw thread formed in parent end face surface is called end-face helical；Rotation direction and lead angle direction meet the screw thread of left hand rule and are called left hand thread, and rotation direction and lead angle direction meet the screw thread of the right-hand rule and be called right-handed thread；In the same cross section of parent, only the screw thread of a helix is called single thread, has the screw thread of two helixes to be called double thread, has the screw thread of a plurality of helix to be called multi start thread；The screw thread that cross sectional shape is triangle is called triangle thread, and the screw thread that cross sectional shape is trapezoidal is called trapezoidal thread, and the screw thread that cross sectional shape is rectangle is called rectangular thread, and cross sectional shape is that zigzag screw thread is called saw-tooth thread；The screw thread connected for fastening structure is called and is fastenedly connected screw thread, and the screw thread that be mainly used in mechanism driving, can also be used for being fastenedly connected is called the screw thread that is in transmission connection, and the screw thread connected for pipeline is called pipe screw thread.
Fastener threads belongs to and is fastenedly connected screw thread, is usually cylindrical thread, and cross sectional shape is triangle；Generally adopt right-handed thread, have during particular/special requirement and just adopt left hand thread；It is generally adopted single thread, has during rapid-assembling/disassembling requirement and just adopt double thread or multi start thread.Fastener threads is formed screw thread pair by internal and external screw thread securing member and uses, and its fiting property depends on the requirement of connection system.The basic demand of screw thread is load and self-locking and non-drive by securing member.The primary condition of screw thread self-locking is: equivalent friction angle cannot be less than lead angle.And the size of equivalent friction angle is relevant with thread form angle, thread form angle is more big, and equivalent friction angle is more big, is more conducive to screw thread self-locking.Here it is the fundamental cause of the many selections of the thread form angle of fastener threads 60 °.The wedge thread occurred in recent years, also known as " Spiralock nuts ", is the improvement to metric thread and the basic fastener threads type of this two class of inch screw thread, it is therefore an objective to improve the self-locking property of fastener threads.Metric thread includes regular screw threads (M screw thread), metric system Aero-Space screw thread (MJ screw thread), metric system minor thread (S screw thread) and screw thread made in Russia (MR screw thread) etc.；Inch screw thread includes unified screw thread (UN screw thread) made in Great Britain, Aero-Space screw thread (UNJ screw thread) made in Great Britain and Whitworth thread made in Great Britain etc., and except adopting 55 ° of thread form angle except Whitworth thread made in Great Britain, other screw threads all adopt 60 ° of thread form angle.
The planform that it is critical only that screw thread of the problem that gets loose of threaded fastener.For this, American engineer, after the shape that have studied fastener threads and stressing conditions, redesigns the geometry of screw thread, this in 1970's end utility model is now known as the thread technology of " execute must jail ".Its structure is, at female thread (interior triangular screw thread, i.e. nut thread) tooth bottom have the tapered ramp of 30 °, when bolts and nuts are tightened mutually, the external screw thread cusp of standard bolt just withstands on the tapered ramp of female thread tightly, produces screw thread interference locking thus increasing coupling mechanism force.The increase of this coupling mechanism force, is also due to the Angulation changes of tooth form, makes to be applied to the produced normal force of contact between screw thread, becomes 60 ° of angles rather than 30 ° of angles as regular screw threads with bolt shaft.Obviously execute must jail screw thread normal force, fastening pressure will be far longer than, therefore, produced locking frictional force is greatly increased.All the time, people go research from this technological layer of form of thread angle and such a technique direction and solve threaded fastener and get loose problem, wedge thread technology is no exception, and wedge thread is the local deformation of triangle tooth form of triangle thread, wedge thread screw thread pair can not be formed use, wedge thread is only used for the external screw thread composition screw thread pair use of nut thread and triangle thread, and coupling mechanism force is also based on the size at form of thread angle, the same with normal thread technology load and self-locking know-why.The bolt of existing existing threaded fastener or nut also exist the defect easily loosened, the gap shaking connector along with equipment frequently increases, bolts and nuts are caused to loosen, even come off, easily occurring connector to be mutually disengaged phenomenon when being so mechanically connected for some, serious is susceptible to security incident.
In order to solve prior art Problems existing, people have carried out long-term exploration, it is proposed that solution miscellaneous.Such as, Chinese patent literature discloses a kind of variable-tooth type stop nut [application number: 201410521899.1], comprises the nut body offering nut inner thread, it is characterised in that: the crest place of described nut inner thread makes spiralling taper surface.As a kind of preferred implementation of the present utility model, the angle of the bus of taper surface described above and the central axis of nut inner thread is 30 °.As a kind of preferred implementation of the present utility model, above-mentioned nut body two ends respectively bolt screws in mouth and bolt screw outlet, and described bolt screw-in mouth stretches out and produces step, and the step surface inclination angle of this step is S；The edge of described bolt screw outlet is inclined-plane, and the inclination angle on this inclined-plane is D.As the improvement of above-mentioned preferred implementation, the angle of described S is 20～30 °；The angle of described D is 30 °.
Such scheme improves the problem easily loosened when existing screw thread pair connects to a certain extent, but, it is low still to there is bonding strength in the program, poor in self, the problem that load value is little.
Summary of the invention
The purpose of this utility model is for the problems referred to above, it is provided that a kind of reasonable in design, simple in construction, has the tapered thread auxiliary connection of good switching performance, locking property.
For reaching above-mentioned purpose, this utility model have employed following technical proposal: this tapered thread auxiliary connection, external screw thread and female thread including mutual threaded engagement, described external screw thread is arranged in cylindrical body, described female thread is arranged in connecting hole, it is characterized in that, described external screw thread includes outer helical face and the first end helicoid, the shape in described outer helical face is identical with the outside spiral face shape of the revolution that the right-angled trapezium right-angle side to coincide with cylindrical body axis at the uniform velocity moves axially along cylindrical body axis for the at the uniform velocity revolution of centre of gyration circumference and this right-angled trapezium and formed simultaneously, the shape of the spiral end face that the shape of the first described end helicoid moves axially consistent one end, direction with above-mentioned revolution is identical, described female thread includes inner side helicoid and the second end helicoid, the shape of described inner side helicoid is identical with the outside spiral face shape of the revolution that the right-angled trapezium right-angle side to coincide with connecting hole axis at the uniform velocity moves axially along connecting hole axis for the at the uniform velocity revolution of centre of gyration circumference and this right-angled trapezium and formed simultaneously, the shape of the spiral end face that the shape of the second described end helicoid moves axially consistent one end, direction with above-mentioned revolution is identical.This tapered thread auxiliary connection outer helical face in use and inner side helicoid cooperate, the technical performances such as its switching performance, locking property, anti-loosening property, load-carrying properties and sealing property by outer helical face and inner side helicoid sizing until interference realizes, namely internal-and external diameter centering is until outer helical face and inner side helicoid Interference contact under the guiding of helix for outer helical face and inner side helicoid, thus realizing the technical performances such as the switching performance of mechanical fasteners mechanism, locking property, anti-loosening property, load-carrying properties and sealing property.Therefore, this tapered thread auxiliary connection mechanical fasteners mechanism load capacity of water, the coupling mechanism force size of self-locking, locking capacity of water, the technical performances such as sealing property quality are unrelated with the size of helix guide angle, relevant with the second cone angle size of first cone angle in outer helical face and inner side helicoid, in other words, the i.e. locking property of the threaded connection pair of tapered thread, anti-loosening property, the technical performance such as load-carrying properties and sealing property, depend primarily on first cone angle in outer helical face and the second cone angle of inner side helicoid, also relevant with the Material texture coefficient of friction of cylindrical body.
In above-mentioned tapered thread auxiliary connection, the distance that the right-angled trapezium described in when described right-angled trapezium at the uniform velocity revolves one-turn moves axially is at least one times of the right-angle side length of right-angled trapezium.This structure ensure that outer helical face and inner side helicoid have sufficient length, thus ensureing have sufficient intensity when outer helical face coordinates with inner side helicoid.
In above-mentioned tapered thread auxiliary connection, the distance that the right-angled trapezium described in when described right-angled trapezium at the uniform velocity revolves one-turn moves axially is equal to the right-angle side length of right-angled trapezium.This structure ensure that outer helical face and inner side helicoid have sufficient length, thus ensureing have sufficient intensity when outer helical face coordinates with inner side helicoid.
In above-mentioned tapered thread auxiliary connection, described outer helical face and the first end helicoid are continuous helical face or discontinuous helicoid；Described inner side helicoid and the second end helicoid are continuous helical face or discontinuous helicoid.Preferably, outer helical face here and the first end helicoid and inner side helicoid and the equal continuous helical face of the second end helicoid.
In above-mentioned tapered thread auxiliary connection, First Transition guide face between outer helical face and the junction of the first end helicoid of same spiral, is adopted to be connected, and the first described end helicoid；The second transition guide face is adopted to be connected between inner side helicoid and the junction of the second end helicoid of same spiral.This First Transition guide face makes outer helical face and the first end helicoid be easy to processing, and form, between adjacent two outer helical faces, the external screw thread line being distributed in the shape of a spiral, the peak of external screw thread line here and the vertical dimension of minimum point, namely the angle formed between outer vortex peak and minimum point are formed inclined-plane and the axis of thread, the i.e. height of outer vortex guide angle, it is far smaller than the height of current all thread technology thread form angle, helicitic texture is compacter, intensity is higher, screw thread load value is big, possesses good mechanical sealing performance, conical external screw thread processing physical space is more spacious；This the second transition guide face makes inner side helicoid and the second end helicoid be easy to processing, and form, between helicoids, the internal thread being distributed in the shape of a spiral inside adjacent two, the peak of internal thread here and the vertical dimension of minimum point, namely the angle formed between inner vortex peak and minimum point are formed inclined-plane and the axis of thread, the i.e. height of inner vortex guide angle, it is far smaller than the height of current all thread technology thread form angle, helicitic texture is compacter, intensity is higher, screw thread load value is big, possesses good mechanical sealing performance, conical internal thread processing physical space is more spacious.
In above-mentioned tapered thread auxiliary connection, one end of described cylindrical body is the screw terminal screwing in described connecting hole, in the first described end helicoid, the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body, in the second described end helicoid the bigger diameter end of each spiral towards with in the first end helicoid the bigger diameter end of each spiral towards identical；Described outer helical face and inner side helicoid interference fit and/or the first described end helicoid and the second end helicoid interference fit.Namely outer helical face here is identical with the hand of spiral of inner side helicoid and bigger diameter end is all towards screw terminal, realizes fastening function by the interference fit in outer helical face with inner side helicoid and the first end helicoid and the second end helicoid.
In above-mentioned tapered thread auxiliary connection, one end of described cylindrical body is the screw terminal screwing in described connecting hole, in the first described end helicoid, the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body, in the second described end helicoid the miner diameter end of each spiral towards with in the first end helicoid the miner diameter end of each spiral towards identical；Described outer helical face and inner side helicoid interference fit and/or the first described end helicoid and the second end helicoid interference fit.Namely outer helical face here is identical with the hand of spiral of inner side helicoid and miner diameter end is all towards screw terminal, realizes fastening function by the interference fit in outer helical face with inner side helicoid and the first end helicoid and the second end helicoid.
In above-mentioned tapered thread auxiliary connection, one end of described cylindrical body is the screw terminal screwing in described connecting hole, in the first described end helicoid, the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body, in the second described end helicoid the bigger diameter end of each spiral towards with in the first end helicoid the bigger diameter end of each spiral towards contrary；The position, intersection place of the inner side helicoid of same spiral and the second end helicoid and the outer helical face interference fit in described cylindrical body in described connecting hole.Namely outer helical face here is contrary with the hand of spiral of inner side helicoid and outer helical face bigger diameter end is all towards screw terminal, realizes fastening function by the position, intersection place of inner side helicoid and the second end helicoid with the outer helical face interference fit in described cylindrical body.
In above-mentioned tapered thread auxiliary connection, one end of described cylindrical body is the screw terminal screwing in described connecting hole, in the first described end helicoid, the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body, in the second described end helicoid the miner diameter end of each spiral towards with in the first end helicoid the miner diameter end of each spiral towards contrary；The position, intersection place of described inner side helicoid and the second end helicoid and described outer helical face interference fit.Namely outer helical face here is contrary with the hand of spiral of inner side helicoid and outer helical face miner diameter end is all towards screw terminal, realizes fastening function by the position, intersection place of inner side helicoid and the second end helicoid with the outer helical face interference fit in described cylindrical body.
In above-mentioned tapered thread auxiliary connection, one end of described cylindrical body is provided with the head being sized larger than cylindrical body external diameter, and described connecting hole is the screwed hole being located on nut.Namely cylindrical body here and head are connected as bolt, and connecting hole is arranged in nut.
Compared with prior art, the advantage of this tapered thread auxiliary connection is in that: reasonable in design, simple in construction, by inside and outside circular cone sizing until interference fit realizes fastening and linkage function, easy to operate, coupling mechanism force is big, and load value is big, and anti-loosening property is good, mechanical sealing effect is good, good stability, can prevent occurring, when connecting, the phenomenon that gets loose, have auto-lock function.
Accompanying drawing explanation
Fig. 1 is the structural blast figure of the embodiment one that this utility model provides.
Fig. 2 is the structural representation of the embodiment one that this utility model provides.
Fig. 3 is the structural representation of the embodiment two that this utility model provides.
Fig. 4 is the structural representation of the embodiment three that this utility model provides.
Fig. 5 is the structural representation of the embodiment four that this utility model provides.
In figure, cylindrical body 1, outer helical face the 11, first end helicoid 12, First Transition guide face 13, connecting hole 2, inner side helicoid the 21, second end helicoid the 22, second transition guide face 23, nut 3, external screw thread line 4, internal thread 5, external screw thread 6, head 61, female thread the 7, first cone angle the 1, second cone angle 2, outer vortex guide angle β 1, inner vortex guide angle β 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in Figure 1-2, this tapered thread auxiliary connection, external screw thread 6 and female thread 7 including mutual threaded engagement, external screw thread 6 is arranged in cylindrical body 1, female thread 7 is arranged in connecting hole 2, here one end of cylindrical body 1 is provided with the head 61 being sized larger than cylindrical body 1 external diameter, connecting hole 2 is the screwed hole being located on nut 3, namely cylindrical body 1 here is connected as bolt with head 61, connecting hole 2 is arranged in nut, external screw thread 6 includes outer helical face 11 and the first end helicoid 12, the shape in outer helical face 11 is identical with the outside spiral face shape of the revolution that the right-angled trapezium right-angle side to coincide with cylindrical body 1 axis at the uniform velocity moves axially along cylindrical body 1 axis for the at the uniform velocity revolution of centre of gyration circumference and this right-angled trapezium and formed simultaneously, the shape of the spiral end face that the shape of the first end helicoid 12 moves axially consistent one end, direction with above-mentioned revolution is identical, female thread 7 includes inner side helicoid 21 and the second end helicoid 22, the shape of inner side helicoid 21 is identical with the outside spiral face shape of the revolution that the right-angled trapezium right-angle side to coincide with connecting hole 2 axis at the uniform velocity moves axially along connecting hole 2 axis for the at the uniform velocity revolution of centre of gyration circumference and this right-angled trapezium and formed simultaneously, the shape of the spiral end face that the shape of the second end helicoid 22 moves axially consistent one end, direction with above-mentioned revolution is identical, this tapered thread auxiliary connection outer helical face 11 and inner side helicoid 21 in use cooperate, its switching performance, locking property, anti-loosening property, the technical performance such as load-carrying properties and sealing property by outer helical face 11 with inner side helicoid 21 sizing until interference realizes, namely outer helical face 11 and inner side helicoid 21 under the guiding of helix internal-and external diameter centering until outer helical face 11 and inner side helicoid 21 Interference contact, thus realizing the switching performance of mechanical fasteners mechanism, locking property, anti-loosening property, the technical performance such as load-carrying properties and sealing property.Therefore, this tapered thread auxiliary connection mechanical fasteners mechanism load capacity of water, the coupling mechanism force size of self-locking, locking capacity of water, the technical performances such as sealing property quality are unrelated with the size of helix guide angle, relevant with the second cone angle 2 size of first cone angle 1 in outer helical face 11 and inner side helicoid 21, in other words, the i.e. locking property of the threaded connection pair of tapered thread, anti-loosening property, the technical performance such as load-carrying properties and sealing property, depend primarily on first cone angle 1 in outer helical face 11 and the second cone angle 2 of inner side helicoid 21, also relevant with the Material texture coefficient of friction of cylindrical body 1.
Specifically, the distance that when right-angled trapezium in the present embodiment at the uniform velocity revolves one-turn, right-angled trapezium moves axially is at least one times of the right-angle side length of right-angled trapezium；Or, the distance that when right-angled trapezium at the uniform velocity revolves one-turn, right-angled trapezium moves axially is equal to the right-angle side length of right-angled trapezium, this ensure that outer helical face 11 and inner side helicoid 21 have sufficient length, thus ensureing, when outer helical face 11 coordinates with inner side helicoid 21, there is sufficient intensity.Wherein, the outer helical face 11 in the present embodiment and the first end helicoid 12 are continuous helical face or discontinuous helicoid；Inner side helicoid 21 and the second end helicoid 22 are continuous helical face or discontinuous helicoid, it is preferable that outer helical face 11 here and the first end helicoid 12 and inner side helicoid 21 and the second equal continuous helical face of end helicoid 22.
Further, First Transition guide face 13 between outer helical face 11 and the junction of the first end helicoid 12 of the same spiral in the present embodiment, is adopted to be connected, and the first end helicoid 12；The second transition guide face 23 is adopted to be connected between inner side helicoid 21 and the junction of the second end helicoid 22 of same spiral, here First Transition guide face 13 makes outer helical face 11 and the first end helicoid 12 be easy to processing, and form, between adjacent two outer helical faces 11, the external screw thread line 44 being distributed in the shape of a spiral, the peak of external screw thread line 4 here and the vertical dimension of minimum point, namely the angle formed between outer vortex 4 peak and minimum point are formed inclined-plane and the axis of thread, the i.e. height of outer vortex guide angle β 1, it is far smaller than the height of current all thread technology thread form angle, helicitic texture is compacter, intensity is higher, screw thread load value is big, possesses good mechanical sealing performance, conical external screw thread processing physical space is more spacious；This the second transition guide face 23 makes inner side helicoid 21 and the second end helicoid 22 be easy to processing, and form, between helicoids 21, the internal thread 5 being distributed in the shape of a spiral inside adjacent two, the peak of internal thread 5 here and the vertical dimension of minimum point, namely the angle formed between inner vortex 5 peak and minimum point are formed inclined-plane and the axis of thread, the i.e. height of inner vortex guide angle β 2, it is far smaller than the height of current all thread technology thread form angle, helicitic texture is compacter, intensity is higher, screw thread load value is big, possesses good mechanical sealing performance, conical internal thread processing physical space is more spacious.
More specifically, one end of cylindrical body 1 in the present embodiment is the screw terminal screwing in described connecting hole 2, in first end helicoid 12, the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body 1, in the second end helicoid 22 bigger diameter end of each spiral towards with in the first end helicoid 12 bigger diameter end of each spiral towards identical；Outer helical face 11 and inner side helicoid 21 interference fit and/or the first end helicoid 12 and the second end helicoid 22 interference fit, namely outer helical face 11 here is identical with the hand of spiral of inner side helicoid 21 and bigger diameter end is all towards screw terminal, realizes fastening function by the interference fit in outer helical face 11 with inner side helicoid 21 and the first end helicoid 12 and the second end helicoid 22.
Embodiment two
As shown in Figure 3, the structure of the present embodiment, principle and enforcement step are similar with embodiment one, different places is in that, one end of cylindrical body 1 in the present embodiment is the screw terminal screwing in described connecting hole 2, in first end helicoid 12, the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body 1, in the second end helicoid 22 miner diameter end of each spiral towards with in the first end helicoid 12 miner diameter end of each spiral towards identical；Outer helical face 11 and inner side helicoid 21 interference fit and/or the first end helicoid 12 and the second end helicoid 22 interference fit, namely outer helical face 11 here is identical with the hand of spiral of inner side helicoid 21 and miner diameter end is all towards screw terminal, realizes fastening function by the interference fit in outer helical face 11 with inner side helicoid 21 and the first end helicoid 12 and the second end helicoid 22.
Embodiment three
As shown in Figure 4, the structure of the present embodiment, principle and enforcement step are similar with embodiment one, different places is in that, one end of cylindrical body 1 in the present embodiment is the screw terminal screwing in described connecting hole 2, in first end helicoid 12, the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body 1, in the second end helicoid 22 bigger diameter end of each spiral towards with in the first end helicoid 12 bigger diameter end of each spiral towards contrary；The position, intersection place of the inner side helicoid 21 of same spiral and the second end helicoid 22 and outer helical face 11 interference fit in cylindrical body 1 in connecting hole 2, namely outer helical face 11 here is contrary with the hand of spiral of inner side helicoid 21 and outer helical face 11 bigger diameter end is all towards screw terminal, realizes fastening function by the position, intersection place of inner side helicoid 21 and the second end helicoid 22 with outer helical face 11 interference fit in cylindrical body 1.
Embodiment four
As shown in Figure 5, the structure of the present embodiment, principle and enforcement step are similar with embodiment one, different places is in that, one end of cylindrical body 1 in the present embodiment is the screw terminal screwing in described connecting hole 2, in first end helicoid 12, the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body 1, in the second end helicoid 22 miner diameter end of each spiral towards with in the first end helicoid 12 miner diameter end of each spiral towards contrary；The position, intersection place of inner side helicoid 21 and the second end helicoid 22 and outer helical face 11 interference fit, namely outer helical face 11 here is contrary with the hand of spiral of inner side helicoid 21 and outer helical face 11 miner diameter end is all towards screw terminal, realizes fastening function by the position, intersection place of inner side helicoid 21 and the second end helicoid 22 with outer helical face 11 interference fit in cylindrical body 1.
Specific embodiment described herein is only to this utility model spirit explanation for example.Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by this utility model person of ordinary skill in the field, but without departing from spirit of the present utility model or surmount the scope that appended claims is defined.
Although more employing the terms such as cylindrical body 1, outer helical face the 11, first end helicoid 12, First Transition guide face 13, connecting hole 2, inner side helicoid the 21, second end helicoid the 22, second transition guide face 23, nut 3, external screw thread line 4, internal thread 5, external screw thread 6, head 61, female thread the 7, first cone angle the 1, second cone angle 2, outer vortex guide angle β 1, inner vortex guide angle β 2 herein, but it is not precluded from using the probability of other term.These terms are used to be only used to describe and explain essence of the present utility model more easily；It is all contrary with this utility model spirit for being construed as any additional restriction.
Claims (10)
1. a tapered thread auxiliary connection, external screw thread (6) and female thread (7) including mutual threaded engagement, described external screw thread (6) is arranged in cylindrical body (1), described female thread (7) is arranged in connecting hole (2), it is characterized in that, described external screw thread (6) includes outer helical face (11) and the first end helicoid (12), the outside spiral face shape of the revolution that the shape in described outer helical face (11) and the right-angled trapezium right-angle side to coincide with cylindrical body (1) axis at the uniform velocity turn round for centre of gyration circumference and this right-angled trapezium at the uniform velocity moves axially along cylindrical body (1) axis and formed simultaneously is identical, the shape of the spiral end face that the shape of the first described end helicoid (12) moves axially consistent one end, direction with above-mentioned revolution is identical, described female thread (7) includes inner side helicoid (21) and the second end helicoid (22), the outside spiral face shape of the revolution that the shape of described inner side helicoid (21) and the right-angled trapezium right-angle side to coincide with connecting hole (2) axis at the uniform velocity turn round for centre of gyration circumference and this right-angled trapezium at the uniform velocity moves axially along connecting hole (2) axis and formed simultaneously is identical, the shape of the spiral end face that the shape of the second described end helicoid (22) moves axially consistent one end, direction with above-mentioned revolution is identical.
2. tapered thread auxiliary connection according to claim 1, it is characterised in that the distance that the right-angled trapezium described in when described right-angled trapezium at the uniform velocity revolves one-turn moves axially is at least one times of the right-angle side length of right-angled trapezium.
3. tapered thread auxiliary connection according to claim 2, it is characterised in that the distance that the right-angled trapezium described in when described right-angled trapezium at the uniform velocity revolves one-turn moves axially is equal to the right-angle side length of right-angled trapezium.
4. the tapered thread auxiliary connection according to claim 1 or 2 or 3, it is characterised in that described outer helical face (11) and the first end helicoid (12) are continuous helical face or discontinuous helicoid；Described inner side helicoid (21) and the second end helicoid (22) are continuous helical face or discontinuous helicoid.
5. the tapered thread auxiliary connection according to claim 1 or 2 or 3, it is characterized in that, First Transition guide face (13) is adopted to be connected between outer helical face (11) and the junction of the first end helicoid (12) of same spiral, and the first described end helicoid (12)；The second transition guide face (23) is adopted to be connected between inner side helicoid (21) and the junction of the second end helicoid (22) of same spiral.
6. tapered thread auxiliary connection according to claim 1, it is characterized in that, one end of described cylindrical body (1) is the screw terminal screwing in described connecting hole (2), in the first described end helicoid (12), the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body (1), in the second described end helicoid (22) bigger diameter end of each spiral towards with in the first end helicoid (12) bigger diameter end of each spiral towards identical；Described outer helical face (11) and inner side helicoid (21) interference fit and/or the first described end helicoid (12) and the second end helicoid (22) interference fit.
7. tapered thread auxiliary connection according to claim 1, it is characterized in that, one end of described cylindrical body (1) is the screw terminal screwing in described connecting hole (2), in the first described end helicoid (12), the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body (1), in the second described end helicoid (22) miner diameter end of each spiral towards with in the first end helicoid (12) miner diameter end of each spiral towards identical；Described outer helical face (11) and inner side helicoid (21) interference fit and/or the first described end helicoid (12) and the second end helicoid (22) interference fit.
8. tapered thread auxiliary connection according to claim 1, it is characterized in that, one end of described cylindrical body (1) is the screw terminal screwing in described connecting hole (2), in the first described end helicoid (12), the bigger diameter end of each spiral is respectively facing the screw terminal of cylindrical body (1), in the second described end helicoid (22) bigger diameter end of each spiral towards with in the first end helicoid (12) bigger diameter end of each spiral towards contrary；The inner side helicoid (21) of same spiral and the position, intersection place of the second end helicoid (22) and outer helical face (11) interference fit in described cylindrical body (1) in described connecting hole (2).
9. tapered thread auxiliary connection according to claim 1, it is characterized in that, one end of described cylindrical body (1) is the screw terminal screwing in described connecting hole (2), in the first described end helicoid (12), the miner diameter end of each spiral is respectively facing the screw terminal of cylindrical body (1), in the second described end helicoid (22) miner diameter end of each spiral towards with in the first end helicoid (12) miner diameter end of each spiral towards contrary；The position, intersection place of described inner side helicoid (21) and the second end helicoid (22) and described outer helical face (11) interference fit.
10. the tapered thread auxiliary connection according to claim 6 or 7 or 8 or 9, it is characterized in that, one end of described cylindrical body (1) is provided with the head (61) being sized larger than cylindrical body (1) external diameter, and described connecting hole (2) is the screwed hole being located on nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945341.6U CN205349976U (en) | 2015-11-24 | 2015-11-24 | Tapered thread connects vicely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945341.6U CN205349976U (en) | 2015-11-24 | 2015-11-24 | Tapered thread connects vicely |
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| CN205349976U true CN205349976U (en) | 2016-06-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443543A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Conical threaded connecting pair |
| CN109944854A (en) * | 2018-04-07 | 2019-06-28 | 玉环胜友工具有限公司 | Class dumbbell shaped asymmetric double is to tapered thread auxiliary connection |
| WO2019192563A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having large left taper and small right taper |
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2015
- 2015-11-24 CN CN201520945341.6U patent/CN205349976U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443543A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Conical threaded connecting pair |
| WO2017088785A1 (en) * | 2015-11-24 | 2017-06-01 | 游奕华 | Tapered thread connection pair |
| CN105443543B (en) * | 2015-11-24 | 2018-04-27 | 游奕华 | Tapered thread auxiliary connection |
| US10508677B2 (en) | 2015-11-24 | 2019-12-17 | Yihua You | Tapered thread connection pair |
| CN109944854A (en) * | 2018-04-07 | 2019-06-28 | 玉环胜友工具有限公司 | Class dumbbell shaped asymmetric double is to tapered thread auxiliary connection |
| WO2019192580A1 (en) * | 2018-04-07 | 2019-10-10 | 游奕华 | Olive-shaped asymmetric bidirectional conical thread connection pair |
| WO2019192563A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having large left taper and small right taper |
| WO2019192581A1 (en) * | 2018-04-07 | 2019-10-10 | 游奕华 | Dumbbell-like asymmetric bidirectional tapered threaded connection pair |
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