CN108119628A - Gapless mainshaft nut - Google Patents

Gapless mainshaft nut Download PDF

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Publication number
CN108119628A
CN108119628A CN201611069714.3A CN201611069714A CN108119628A CN 108119628 A CN108119628 A CN 108119628A CN 201611069714 A CN201611069714 A CN 201611069714A CN 108119628 A CN108119628 A CN 108119628A
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CN
China
Prior art keywords
nut
nut portion
mainshaft
intermediate member
mainshaft nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611069714.3A
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Chinese (zh)
Inventor
谢益碧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201611069714.3A priority Critical patent/CN108119628A/en
Publication of CN108119628A publication Critical patent/CN108119628A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2003—Screw mechanisms with arrangements for taking up backlash
    • F16H25/2006—Screw mechanisms with arrangements for taking up backlash with more than one nut or with nuts consisting of more than one bearing part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2003—Screw mechanisms with arrangements for taking up backlash
    • F16H2025/2012—Screw mechanisms with arrangements for taking up backlash using a spring member creating rotary torque for counter rotating the two nuts, e.g. a torsion bar

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

The present invention relates to a kind of gapless mainshaft nuts with the screw thread that can be engaged with main shaft.There is mainshaft nut the first nut portion with the first internal thread and the second nut portion with the second internal thread, the second nut portion can be reversed compared with the first nut portion.First internal thread and the second internal thread form the screw thread of mainshaft nut together.In order to generate preload between the first nut portion and the second nut portion, mainshaft nut has elastic element.Preload can be adjusted by the relative torsion between the first nut portion and the second nut portion.According to the present invention, mainshaft nut should have through the fixed intermediate member will not be reversed compared with the first nut portion, thus elastic element works between the first nut portion and intermediate member, and thus the relative torsion between the first nut portion and the second nut portion can be locked by means of locking the relative torsion position between the second nut portion and intermediate member.

Description

Gapless mainshaft nut
Technical field
The present invention relates to a kind of gapless mainshaft nuts as described in the preamble according to independent claims 1.
Background technology
The gapless mainshaft nut of universal class has the screw thread that can be engaged with main shaft.In addition, mainshaft nut has the One nut portion and the second nut portion, first nut portion have the first internal thread, the second nut portion tool There is the second internal thread, the second nut portion can be reversed compared with the first nut portion.First internal thread and the second internal thread It is collectively form the screw thread of mainshaft nut.In order to generate preload between the first nut portion and the second nut portion, into one Step provides elastic element, such as spring.In the mainshaft nut of universal class, preload can pass through the first nut portion and second Relative torsion between nut portion is adjusted.
Known gapless mainshaft nut from the prior art.For example, 4 204 304 A1 of DE show a kind of single type main shaft Nut, central area itself are formed as spring, and devise several slits for this purpose.One in two threaded inserts Thus person connects with corresponding end sections securely, another threaded insert is screwed into mainshaft nut, and therefore can be through It adjusts to set preload in a stepless manner.Manufacture from mainshaft nut known to 4 204 304 A1 of DE is extremely complex 's.
From a kind of two-piece type mainshaft nut known to 605 09 125 T2 of DE, wherein by means of causing two nut portions split-phases Preload is generated to the torque spring of torsion.Therefore, preload does not work in the axial direction but in circumferential direction.It is right In preload can not be set from mainshaft nut known to 695 09 125 T2 of DE.Due to the use of the reason of torque spring, nut Build relatively long.
A kind of two-piece type mainshaft nut also to work together with torque spring is shown in 0 060 270 B1 of EP.Although The load of torque spring can be adjusted for this mainshaft nut, but this mainshaft nut also has in the axial direction using opposite The problem of larger installation space.
For from mainshaft nut known to 697 23 674 T2 of DE, also generating preload by means of torque spring.Main shaft Nut includes two nut portions, and described two nut portions are held to exempt from relative torsion.It is deposited between two nut portions Ensuring the second nut portion compared with the first nut portion and floating in the axial direction the guide device of positioning.In mainshaft nut Central area in, two nut portions are surrounded by hollow circle tube sleeve, and the sleeve is on one of two end Equipped with the scarf recess arranged in circumferential direction, the scarf recess and the similary scarf of the first nut portion are recessed Mouth interaction.The arrangement ensured when cylindrical sleeve is reversed compared with the first nut portion, and two nut portions will be It is pressed and separates on axial direction.Corresponding torque spring ensures what is circumferentially worked between sleeve and the first nut portion The generation of preload.Due to the reason of relatively complicated structure, also exist from mainshaft nut known to 69 723 674 T2 of DE Relatively large installation space is used on axial direction.In addition, preload can not be adjusted for this mainshaft nut.
A kind of two-piece type mainshaft nut with relatively simple structure is shown in 4 010 111 A1 of DE. In this mainshaft nut, two nut portions are positioned also relative to floating each other and in the axial direction.Eliminate the second nut Partly compared with the relative torsion of the first nut portion.In order to generate preload, it is present to ensure that two nut portions will be in axial direction Separated simple helical spring is pressed on direction.The preload generated in the process can not possibly be adjusted.
3 929 505 A1 of DE describe the two-piece type mainshaft nut for not generating preload wherein.However, it can adjust afterwards The mainshaft nut is saved to eliminate the gap caused by abrasion.
Finally, from a kind of gapless main shaft of the type of next self-corresponding product classification known to 69 903 426 T2 of DE Nut.The mainshaft nut substantially can be directed to the nut portion reversed each other by two and form.By being arranged in two spiral shells Between female part and as two nut portions for the elastomeric ring reversed and gradually compressed each other ensure preload. Engaging structure is provided to lock the relative torsion position of two nut portions.Therefore, one of two nut portions have outer Engaging structure, and another nut portion is equipped with there are two elastic fin, described two elastic fins are from the angle of circumferential direction Degree positions and also has engaging structure toward each other, and the engaging structure is engaged with the external recess of the first nut portion. Meanwhile engaging structure device forms axial guide mechanism between the first nut portion and the second nut portion.First nut portions The external toothing tooth and the elastic fin of the second nut portion divided is interacted in a manner of ratchet.This means applying centainly Power when two nut portions relative torsion will be possible.The elastic fin of second nut portion is thus by briefly direction Outside presses and is then back to by a bolt conversion and card in the external toothing tooth of the first nut portion.From DE699 03 Mainshaft nut builds relatively large in radial directions known to 426 T2, because actual in external jagged nut portion Upper needs are surrounded by the second nut portion.In addition, in order to ensure rational adjustable range, elastic fin is relatively long , this results in undesirable larger structure length again.
The content of the invention
It is therefore an object of the present invention to the further gapless mainshaft nut of the initial mentioned type of exploitation so that can be with Realizing has the utmostly structure of compactedness and can adjust preload.In addition, mainshaft nut should have simple structure And it is manufactured in a manner of cost-efficient.
The purpose is solved by the feature of independent claims 1.In consideration of it, solution according to the present invention provides There is a kind of gapless mainshaft nut of universal class, be held to not compared with the first nut portions if the mainshaft nut has If the intermediate member for dividing torsion, thus elastic element works between the first nut portion and intermediate member, and thus Relative torsion between the first nut portion and the second nut portion can be by means of locking the second nut portion and middle part Relative torsion position between part locks.
Solution according to the present invention, which provides mainshaft nut, has the advantages that flexible structure while extremely compact.Pass through Intermediate member is provided, such as engaging structure can be provided for the relative torsion position of two nut portions is locked in especially At suitable position.For example, with from mainshaft nut known to 69 903 426T2 of DE on the contrary, this device may not require two One of a nut portion radially around the mode of the first nut portion equipped with external toothing structure and in order to design separately One nut portion.Also, solution according to the present invention does not require engaging structure that must ensure simultaneously in two nut portions / axially directed system, and for this purpose and with relatively wide design.
The advantageous embodiment of the present invention is the object of dependent claims.
The preload generated by elastic element preferably works in the axial direction.Thus it is possible that by two nuts Part is pressed together or separates.Particularly preferred the latter.
In a preferred embodiment of the invention, intermediate member is equipped with first shape locking member, the first shape lock Determining element can engage with the second form-lock element of the second nut portion, thus between the second nut portion and intermediate member Relative torsion position can be locked by the engagement between first and second form-lock element.Here it is how can be real Existing lockable easy to implement.Form-lock element can for example be arranged in a manner of being evenly distributed in circumferential direction, with Second nut portion is locked in several possible torsiversions compared with the first nut portion.Preferably, all shapes Locking member is identical, to ensure the smooth engagement in different possibility torsiversions.
In another particularly preferred embodiment of the present invention, the axial direction that first shape locking member is formed at intermediate member is stopped In stopper, and the second form-lock element is formed on the axially opposite stopper section of the second nut portion.Here it is how Realize particularly compact structure, especially in radial directions.Corresponding form-lock element is preferably respectively designed in centre On component and the outer adjacent surface of the second nut portion.
It is further preferred that the first and second form-lock element passes through intermediate member and the second nut portion respectively Each tooth of engaging structure formed.Engaging structure provides particularly simple locking possibility.If engaging structure is designed as abutting Face transmission system, then can realize particularly compact structure.
If the first and second form-lock element passes through intermediate member and/or the annular knurl shape of the second nut portion respectively Into, then it may insure extremely simple and cost-efficient manufacturing process.And it is advantageous here that is being discussed respectively Annular knurl is designed in the axial stop of component.
The present invention another preferred embodiment in, by means of guide device with the first nut portion is axially opposite can Repositioning mode guides intermediate member.This ensures intermediate member compared with the first nut portion in the axial direction in a straightforward manner On relocatability, but keep anti-twisting locked between the first nut portion and intermediate member.If pass through the first nut Partial groove (intermediate member is located in a manner of axial relocatable in the groove) realizes guiding, then may insure spy Not simple and cost-efficient structure.
In another particularly preferred embodiment, the groove for guiding intermediate member is formed at the first nut portion In protrusion.This is also beneficial to extremely simple and especially compact structure, especially wherein elastic element radially around protrusion In the case of portion.Protrusion preferably has cylindrical shape and the portion for being formed with protrusion thereon than the first nut portion Divide less diameter.Alternatively, it is possible to not form the hollow cylindrical protrusion portion with smaller diameter.In the case, If elastic element is at least partly surrounded by hollow cylindrical protrusion portion, then will be favourable to cramped construction.In for example, Empty cylindrical springs may be mounted in hollow cylindrical protrusion portion.
If the second nut portion has the groove for receiving protrusion, another advantage will be generated.By protrusion with Interaction between groove, it can be ensured that the first nut portion and the second nut portion are always concentrically with respect to one another.In addition, this can It enables to be formed between described two components axially directed.
Be formed at it is in protrusion, for guiding the groove of intermediate member preferably with compared with the axis pair of mainshaft nut The mode of title designs.The groove preferably breaks through the protrusion in radial directions, so that intermediate member can be in footpath It is stretched out on direction from protrusion.
In another particularly preferred embodiment of the present invention, elastic element is spring washer.Due to the reason of this embodiment, The cramped construction of mainshaft nut can further be optimized, especially in the axial direction.Although it is also possible that with (for example) Helical spring replaces spring washer, but helical spring requires significantly larger total length.In order to ensure king-sized adjusting Scope, if spring washer being designed to, more waveform spring washers will advantageously.
In another preferred embodiment, intermediate member is basically shaped as plate, and thus plate intermediate member is perpendicular to main shaft The axis alignment of nut.Also, this can further optimize the cramped construction of mainshaft nut according to the present invention.It is of the invention special It is suitable for the small-sized mainshaft nut with the length less than 20mm and the radial width less than 15mm.The component of mainshaft nut can To be made from a different material.Metal is particularly suitable for manufacturing the first nut portion and the second nut portion and intermediate member.Pottery Ceramic material, especially zirconium oxide are also suitable.It in addition, can also with the main shaft of mainshaft nut according to the present invention interaction It is made of ceramic materials, is especially made of zirconium oxide.
Such as become apparent from preferred embodiment described above, present invention particularly provides advantages below：It is according to the present invention Mainshaft nut can only be assembled with several components through simple structure.Mainshaft nut is preferably by four individual component structures Into, particularly the first nut portion and the second nut portion, intermediate member and flat spring and/or spring washer.However, also For example spring may be connected with the first nut portion.According to for the selected material of individual elements, it would be possible to for example by spring It welded with the first nut portion, bond or be connected in another way.In principle between spring and intermediate member it can also be envisaged that Such connection.
Description of the drawings
Hereinafter, the embodiment of the present invention is illustrated in greater detail with reference to the attached drawings.
The attached drawing is shown：
Fig. 1 shows the mainshaft nut example according to the present invention on main shaft from flank angle,
Fig. 2 shows the decomposition view (oblique view) according to the mainshaft nut according to the present invention of Fig. 1,
Fig. 3 shows the decomposition view according to Fig. 2 from opposite side,
Fig. 4 shows the stereogram of the mainshaft nut according to the present invention according to Fig. 1,
Fig. 5 shows the longitudinal section of the mainshaft nut according to the present invention according to Fig. 1 to 4,
Fig. 6 shows the longitudinal section in the case of stronger preload according to the mainshaft nut according to the present invention of Fig. 1 to 5.
In the following description, identical component is indicated by identical reference numeral.If attached drawing contains in related schema The reference numeral not further illustrated in description, then with reference to previous or subsequent schema description.
Specific embodiment
Fig. 1 shows the example of the mainshaft nut 1 according to the present invention being screwed on main shaft 2.Mainshaft nut includes the first spiral shell Female 3 and second nut portion 4 of part, the nut portion are respectively provided with base unit, and base unit is substantially opposite master The axis 14 of axis nut is formed in a manner of rotational symmetry.There are middle parts between the first nut portion 3 and the second nut portion 4 Part 8, the intermediate member are pressed by more waveform spring washers 7 in the second nut portion 4, and the spring washer is on the one hand right Standard is in the first nut portion 3 and on the other hand in alignment with intermediate member 8.
The structure of mainshaft nut according to the present invention is illustrated in greater detail by the decomposition view of Fig. 2 and 3.First nut Part 3 includes substantially hollow cylindrical protrusion portion 12, and the overall diameter of the protrusion is less than the first nut portion itself Overall diameter.More waveform spring washers 7 are fixed on protrusion 12, so that the washer is in the assembled state radially around described Protrusion.The outer end of protrusion 12 has groove 11, and plate intermediate member 8 is inserted into the groove.Due to the reason of groove, only Two are laterally guided fin 13 and will be retained at the outer end of protrusion, and the fin that is laterally guided is arranged opposite to each other, and plate Shape intermediate member 8 is positioned in a manner of axial relocatable.Due to this point, intermediate member 8 is fixed to prevent simultaneously It is reversed compared with the first nut portion 3.Fig. 3 shows that intermediate member 8 also has groove on the side towards the first nut portion 3 16, when the first nut portion and intermediate member are resisted and be pressed together by the spring force that more waveform spring washers 7 generate When, the lower part of protrusion 12 passes through the groove.
On the opposite flank towards the second nut portion 4, intermediate member has adjacent surface engaging structure 9, the adjacent surface The engaging structure adjacent surface engaging structure 10 opposite with the second nut portion 4 interacts, such as example shown in Fig. 4.Fig. 3 Also illustrate that the second nut portion 4 also has groove 15, tool can there are two the front end for the protrusion 12 for being laterally guided components of system as directed 13 To pass through the groove.
All components all have central through hole, and thus the first nut portion 3 is equipped with the first internal thread 5 and the second nut Part 4 is equipped with the second internal thread 6.In assembled state, internal thread 4 is actually the continuity of internal thread 5.Therefore, in two Screw thread forms the screw thread of mainshaft nut according to the present invention together.This is for example shown by means of the longitudinal section in Fig. 5.In this schema In, it is shown that there is the mainshaft nut according to the present invention of relatively low preload.As the second nut portion 4 is compared with Engaging structure of the relative torsion position of one nut portion 3 by the groove attachment of described two nut portions at intermediate member 9 and/or the engaging structure 10 that is formed in the second nut portion 4 at, preload generally remains constant.By applying centainly Power, the second nut portion can be reversed compared with the first nut portion.This means two nut portions can be with main shaft side by side Ground is screwed out or is screwed together, and for clarity, this does not show in Fig. 5 and 6.The engaging structure 9 of intermediate member and Thus the engaging structure 10 of second nut portion disengages a bit of time, and if being turned in the near future by one and/or bolt stem It changes and blocks back.Fig. 6 shows the mainshaft nut according to the present invention during increased preload.This means two nut portions 3 and 4 are more closely screwed together compared with the state shown in Fig. 5, thus spring 7 is compressed be subject to more stronger, and And thus generate bigger preload.It can be clearly seen that protrusion 12 is slightly through intermediate member 8 in this process Groove 16.Two are laterally guided the groove 15 that system tab 13 passes through the second nut portion 4 with identical degree.
First nut portion 3, the second nut portion 4 and intermediate member 8 are made preferably of metal, it is also possible to by Ceramic material is made, such as zirconium oxide.More waveform spring washers 7 are preferably made of steel.

Claims (10)

1. a kind of gapless mainshaft nut (1), the mainshaft nut has the screw thread that can be engaged with main shaft (2), thus described Mainshaft nut (1) has：First nut portion (3), first nut portion have the first internal thread (5)；And second spiral shell Female part (4), second nut portion can be reversed compared with first nut portion (3) and have the second internal thread (6), Thus first internal thread (5) and second internal thread (6) form the screw thread of the mainshaft nut (1) together, Thus the mainshaft nut (1) has elastic element (7), in first nut portion (3) and second nut portion (4) preload is generated between, and thus the preload can pass through first nut portion (3) and second nut portions Relative torsion between point (4) is adjusted,
It is characterized in that, the mainshaft nut (1) has intermediate member (8), the intermediate member is fixed to not compared with institute The first nut portion (3) torsion is stated, thus the elastic element (7) is in first nut portion (3) and the intermediate member (8) work between, and the thus opposite torsion between first nut portion (3) and second nut portion (4) Turn to lock by means of locking the relative torsion position between second nut portion (4) and the intermediate member (8).
2. mainshaft nut (1) according to claim 1, which is characterized in that the intermediate member (8) is locked with first shape Determine element (9), the first shape locking member can be nibbled with the second form-lock element (10) of second nut portion (4) Close, thus the relative torsion position between second nut portion (4) and the intermediate member (8) can by first with it is described Engagement between second form-lock element (9,19) locks.
3. mainshaft nut (1) according to claim 1, which is characterized in that the first shape locking member (9) is formed at In the axial stop of the intermediate member (8), and the second form-lock element (10) is formed at second nut portions Divide on the axially opposite stopper section of (4).
4. the mainshaft nut (1) described in any claim in Claim 1-3, which is characterized in that described first with And second form-lock element (9,10) nibbled respectively by the intermediate member (8) and the second nut portion (4) Each tooth of tooth is closed to be formed.
5. the mainshaft nut (1) described in any claim in Claim 1-3, which is characterized in that described first with And the second form-lock element (9,10) passes through the intermediate member (8) and described second nut portion (4) respectively Annular knurl formed.
6. mainshaft nut (1) according to any one of claims 1 to 5, which is characterized in that the middle part Part (8) is guide device by with being guided in a manner of the axially opposite floating of first nut portion (3), from there through institute The groove (11) for stating the first nut portion (3) realizes guiding, and intermediate member (8) floating ground is located in the groove.
7. mainshaft nut (1) according to claim 6, which is characterized in that the groove (11) is formed at first spiral shell In the protrusion (12) of female part (3), thus the elastic element (7) surrounds the protrusion (12).
8. the mainshaft nut (1) described in any claim in claim 1 to 7, which is characterized in that the elasticity member Part (7) is spring washer.
9. mainshaft nut (1) according to claim 8, which is characterized in that the spring washer (7) has how wavy set Meter.
10. the mainshaft nut (1) described in any claim in claim 1 to 9, which is characterized in that the centre Component (8) has the design of basic plate, and thus the plate intermediate member (8) is perpendicular to the axis of the mainshaft nut (1) Line (14) is aligned.
CN201611069714.3A 2016-11-29 2016-11-29 Gapless mainshaft nut Pending CN108119628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611069714.3A CN108119628A (en) 2016-11-29 2016-11-29 Gapless mainshaft nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611069714.3A CN108119628A (en) 2016-11-29 2016-11-29 Gapless mainshaft nut

Publications (1)

Publication Number Publication Date
CN108119628A true CN108119628A (en) 2018-06-05

Family

ID=62224429

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611069714.3A Pending CN108119628A (en) 2016-11-29 2016-11-29 Gapless mainshaft nut

Country Status (1)

Country Link
CN (1) CN108119628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894962A (en) * 2018-09-30 2020-11-06 孙团结 Pre-tightening anti-loose nut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894962A (en) * 2018-09-30 2020-11-06 孙团结 Pre-tightening anti-loose nut

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Application publication date: 20180605