CN106246690A - A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system - Google Patents
A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system Download PDFInfo
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- CN106246690A CN106246690A CN201610773285.1A CN201610773285A CN106246690A CN 106246690 A CN106246690 A CN 106246690A CN 201610773285 A CN201610773285 A CN 201610773285A CN 106246690 A CN106246690 A CN 106246690A
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- spline
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Classifications
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- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
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- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system.A kind of fastening structure, including being fastenedly connected assembly, parent, attached body；It is fastenedly connected assembly and includes screw rod, spline set；An end face of spline set is axially convexly equipped with constraint spline set and unscrews, towards screw rod, the spline set spline boss that direction rotates；Parent and attached body are fastened together by screw rod；Spline set is arranged on outside the spline blocking part of screw rod；Spline set spline boss inserts in attached body spline hole, and spline set by axial limiting outside spline blocking part, spline set spline boss kept out by attached body spline hole in the side unscrewing direction towards screw rod, screw rod through spline through hole jointly retrain spline set rotate relative to attached body；Screw rod rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint spline blocking part in spline set；Parent, attached body are non-rotatably fastened together by screw rod.Advantage is to need not spline part, it is not required that processing spline hole on attached body, the installation of spline set is taken out quick and easy, reliable, and screw rod will not invert and get loose.
Description
Technical field:
The present invention relates to a kind of screw thread pair machinery static plural object of connection is fastenedly connected technology；Particularly relate to
A kind of by screw thread pair machinery static connection crankshaft connecting rod system, track structure, aircraft, boats and ships, equipment, aerospace equipment, boat
Mother, airship, rocket, electromotor, nuclear reaction equipment, train, high ferro, rail, steel building, steel structure bridge, automobile etc.
The fastening structure of the machine components on key position, spline structure in plant equipment, it is fastenedly connected assembly, crankshaft-link rod
Mechanism, the use environment of these machine components is severe especially as vibrations are big, hot environment, load are big, and to screw thread pair machinery
The connection reliability of static connection requires the highest.
Background technology
Screw thread pair machinery static between object couples the bolt fracture some key positions occur and connecting, threaded inefficacy
The safety problem caused and security incident, through being commonly encountered, be the common fault that faces of the whole world, be also that those skilled in the art constantly grinds
Study carefully improvement also open question anxious to be resolved.Stove bolt, major break down, often because of bolt fracture generation major accident, such as vapour
The connecting-rod bolts fracture of the electromotor of car causes smashes cylinder accident；The Harbin tower crane bolt fracture that on April 18th, 2009 occurs is made
The accident of 1 dead 4 wounds become；Detect 7 anchor bolt fractures according to number machine reacting furnace of core two factory of Taiwan media report, damaging can
The accident of nuclear safety can be caused；During 29 days 16 June in 2012 45 distributions raw, the middle guide pillar bolt of No. 5 passenger cabin support systems sends out
Give birth to fatigue fracture, cause Shenzhen Eastern Chinese Overseas Town " star trek " entertainment selection that the considerable safety that 6 people are dead, 10 people are injured occurs
Accident；As the representative producer of high-end vehicles, because the technical problem of broken screw cannot be solved, cause BMW electromotor coping screw
The fracture moment misfire event that runs out of steam causes recalling 230,000 cars (BMW (Chinese) automotive trade company limited, Huachen BMW
Automobile Co., Ltd. determined from 18 days June in 2014, recalled 230,000 cars), manufacturing firm is by tremendous economic loss and business
Reputation loss, more seriously can cause the security of the lives and property of car owner.Although under many circumstances, particularly at vibrational state
Under, it is often necessary to the fastening connection piece periodic inspection locked is reinforced, prevents screw thread pair from rotating and loosen very towards unscrewing direction
To being the security incident brought that gets loose, but the whole world annual because a series of security incidents of causing of threaded inefficacy very
Many, example is too numerous to enumerate.
Threaded reliability is that the friction that the friction by screw thread pair produces between the contact surface of self-locking and screw thread pair comes
Ensure.In general, connect screw thread and there is certain self-locking performance, can't automatically get loose under static load conditions.But, due to
Inevitably there is shock and vibration, varying load effect in the working condition connected.Under these working conditions, screw thread pair it
Between frictional force there will be momentary loss or reduction；Simultaneously in the occasion that high temperature or variations in temperature are bigger, material can occur compacted
Strain and stress relaxes, and frictional force also can be made to reduce.Under repeatedly effect, will result in threaded gradually getting loose.
Threaded inefficacy, is primarily due to pretightning force minimizing and causes screw thread to get loose, therefore thread connection anti-loose
Essence, it is simply that prevent screw thread pair towards unscrew direction rotate (namely between internal thread hole and external thread part towards the side of unscrewing
To rotating), rotate as the court between bolts and nuts unscrews direction.
Existing mechanical anti-loose method mainly includes utilizing the machineries such as split pin, locked spacer and string steel wire rope locking
Method.The most a lot of anti-loose methods also using series connection steel wire rope.
In order to prevent threaded getting loose, people are always in unremitting effort.
Patent No. US1755807,6 days April nineteen twenty-nine of filing date, publication date are that the U.S. in April 22 nineteen thirty is special
In profit, disclose a kind of locking bolt and nut structure, including screw rod, locking nut, spline set.Screw thread it is provided with in locking nut
Through hole and the spline hole of internal tooth wheel shape communicated therewith, the minimum-value aperture in spline hole is more than the aperture of tapped through hole.Spline is sheathed
Having spline through hole, spline set periphery is external tooth wheel shape, and spline through hole hole wall is provided with spline bar, is provided with and spline bar on screw rod
The spline groove coordinated.The external tooth wheel shape periphery of spline set and locking nut spline hole gerotor type hole wall fiting constraint locking nut
Rotating relative to spline set, the spline set of spline set inserts the spline groove constraint screw rod of screw rod and rotates relative to spline set, therefore screw rod
Together with being nonrotatably mounted tO with locking nut.In this patent, owing to spline set is contained in the spline hole of locking nut completely
In, spline set is difficult to take out from the spline hole of locking nut；And screw rod, nut use during, due to spline set,
Screw rod and nut get rusty, dust enters between spline set and screw rod and nut, spline set and screw rod and nut the meeting such as interpenetrate
Cause and between spline set and bolt and nut, produce the biggest gmatjpdumamics, thus cause spline set cannot take out between screw rod and nut.
If spline set is difficult to or cannot take out between screw rod and nut, it is difficult to maybe cannot be separated with screw rod by nut, thus but loses
Go to use screw thread pair to connect and be contemplated to the most basic purposes that can be separated with nut by screw rod easily, thus this spiral shell
Bar and nut structure are not have great use value.
Patent No. ZL201510198765.5, application publication number are CN 104819197A, filing date in April, 2015
24 days, date of publication be on August 6th, 2015 patent of invention in, a kind of Anti-loosening nut attachment structure, including connector and pass
The screw rod of connector, screw rod screws nut by connector fasten, outside nut be socketed a locking lasso, locking lasso be connected
Being provided with anti-rotational structure between part, anti-rotational structure includes the deep gouge that on connector, corresponding nut is arranged, and after nut screws, bottom sets
In deep gouge, locking lasso outer ring is provided with dop, and deep gouge medial wall is provided with the draw-in groove snapped in for dop；Locking lasso height is less than
The height of deep gouge, is interference fit between locking lasso and nut and deep gouge.The Anti-loosening nut attachment structure of this invention, due to
Adding a locking lasso, and be provided with anti-rotational structure between locking lasso and connector, locking lasso inner ring is for join with nut
The regular hexagon structure closed, can not rotate against between locking lasso inner ring and nut, and anti-rotational structure prevents locking lasso simultaneously
Rotate against with connector, thus loosen after being possible to prevent nut fastening.This Anti-loosening nut attachment structure, although achieve
Prevent loosening of nut, but on the one hand due to locking lasso height less than the height of deep gouge, locking lasso and nut and deep gouge it
Between be interference fit, dismantle Anti-loosening nut attachment structure time, locking lasso is cannot to take out in deep gouge, it is impossible to take
Go out locking lasso, just nut cannot be separated with screw rod, thus but lose use screw thread pair and connect that be contemplated to can
The most basic purposes easily screw rod separated with nut, thus this structure is less than in all senses；On the other hand,
Deep gouge medial wall is provided with the draw-in groove snapped in for dop, this notch cannot machining out, if not prior and quilt
Connector molding together, then need just can process by techniques such as electric sparks, thus use cost be the highest；Further, if
Not to screw rod spline, screw rod still can rotate relative to locking nut, is also only not have any realistic meaning to nut spline.Above-mentioned
Various reasons, those skilled in the art can be made to think, and the technical scheme of this invention, without any use value, hinders this significantly
The technical staff in field improves the enthusiasm of the technical scheme of this patent.
Patent No. ZL97112246.6, publication date are in the patent of invention of 97112246.6, disclose a kind of locking spiral shell
Mother, including tool mounting-portion and be coaxial therewith projecting upwards the annular protrusion of setting, between which has through screwed hole.This
Plant stop nut, it is simply that HardLock nut, be known as the most unique exhausted tight nut, be Hadlock industry strain formula
A president Ruo Linke man of virtue and ability for commercial firm has used the time of nearly 20 years, the technological achievement found out by continuous technological improvement, now
In high ferro, Application comparison is many.During high ferro operation, the train run at high speed constantly contacts with rail, and the vibrations of formation are very big, and one
As screw can be quaked loose shake in this vibrations and fly.It is not desired to be shaken fly, then be accomplished by screw and nut is intricately woven together, never
Loosen.This requires to seem very simple, but is intended to meet it and is not easy to.High ferro represents Created in China, but with Japan
Nut, thus have media to send the exclamation of the similar gap finding out made in China and Japan's manufacture from a nut.But this spiral shell
Female manufacturing process is extremely complex, and the accuracy of manufacture requires the highest, and present situation is, has product figure, has product, does not has Ha Deluo
Unique technology of gram company and tricks of the trade, but cannot manufacture, thus expensive, at least tens yuans；This spiral shell
Mother also cannot accomplish the most loose, and simply in existing stop nut, anti-loosing effect is calculated well；This nut, reuses
Cannot use again after tens times.
In the utility model patent of Patent No. ZL201520399393.8, disclose a kind of from jack panel, bolt fastening
Part, securing member includes self-tightening nut body, self-tightening packing ring and plain bolt；Self-tightening nut body and self-tightening washer contacts face are flat
Slip over the helicoid crossed；Self-tightening nut body is threadeded with plain bolt；Bolt fastener includes self-locking bolt, self-tightening packing ring
And plain nut；Plain nut is threadeded with self-locking bolt.Autofrettage should be used, at spiral shell from jack panel, bolt fastener
On mother or bolt, a self-tightening structure is set so that it is after locking, reach the effect of self-tightening, allows nut displacement no longer occur or loosens.
Oneself nut this, also known as self-tightening king's nut and the nut of never becoming loose, and declare its anti-loose ability more than hardlock nut,
CCTV has been reported that.This nut is not owing to being widely used, and its anti-loosing effect how, it is impossible to judge.
Publication No. CN201934467U, publication date are in the utility model patent on August 17th, 2011, disclose one
Front-end single-threaded spiral rear double-line anchoring screw, it mainly includes screw rod, and screw rod is provided with tapping screw thread, and screw rod tail end is provided with
Connection member, connection member is outer-hexagonal head, and outer-hexagonal head is provided with pad, is provided with locking teeth bottom pad.This practicality
In novel, disclosed is only a kind of bolt structure, and described all structures are all parts for bolt structure, from figure and outer six
From the point of view of angle head is provided with on the literal expression of pad, all can be interpreted as that pad is a part for screw undoubtedly, therefore not deposit
Being provided with the spline through hole coordinated with outer-hexagonal head on pad, pad is arranged on outside outer-hexagonal head, and pad and screw rod are separately
Two components.Owing to pad is a part for screw, during the screw-in of screw, the locking teeth on pad and pad also with
Screw rod to rotate together, although being so provided with locking teeth on pad, locking teeth is only not when embedding connected object
Axially embed connected object, but produce axial and circumferential displacement in the process rotated and embed connected object, so
During screw rotates, locking teeth can form one along screw screw-in direction from-shallow-to-deep on the surface of connected object
Circumferential slot.On the one hand circumferential slot destroys the attractive in appearance of connected object outward appearance；On the other hand locking teeth it is greatly reduced with connected
The insertion force of object, it may be said that locking teeth is extremely limited to the reverse anti-loose effect of screw；Especially because embedding tooth
Existence, make screw be difficult to the object that locking is connected.The locking teeth of the screw of the most this structure, has been not the work loosened
, the screw of this structure, there is no any use value.
From Patent No. US1755807, the United States Patent (USP) in 6 days April nineteen twenty-nine of filing date, invent and come with spline set
Limit the loosing Prevention Technology that bolt opposing nut rotates, to Patent No. ZL201510198765.5, filing date April 24 in 2015
In the Chinese invention patent of day, again propose spline set and limit the technical scheme of nut rotation, last 86 years, all do not have
Solution can locking to screw bolt and nut with spline set or locking to screw bolt and nut with spline set, again can fast and easy reliable
Spline set is taken out from spline hole so that the technical problem separated of screw bolt and nut.Existing think that anti-loosing effect is good
Hardlock nut, self-tightening king's nut, all locking not by using spline set to stop nut rotation to realize bolt and nut；Hurry up
Oneth century went over, also not over using spline set to stop nut rotation to realize the technology application that bolt and nut is locking；
Visible, though people be absorbed in employing spline set can stop nut rotation to realize that bolt and nut is locking bolt and nut very
The difficult technology mistaken ideas maybe cannot dismantled, define employing spline set stop nut rotation to realize the locking technology of bolt and nut without
The inertial thinking of use value, thus prevent those skilled in the art to improve employing spline set and stop nut rotation to realize
The enthusiasm of the technical scheme that bolt and nut is locking.
The fastening structure of above-mentioned prior art, is all to need spline is placed in spline hole constraint locking screw parent phase
Screw rod court is unscrewed direction rotate.Shortcoming be if spline set be contained in completely in spline hole, if the most not by spline set from
The taking-up structure taken out in spline hole, spline set is difficult to take out from spline hole；Further, processing and spline set on attached body are needed
The spline hole coordinated, or need one be nonrotatably mounted tO with attached body together with spline part, spline part is processed with only
The spline hole that pivoted housing periphery coordinates, cost is high.
Summary of the invention
For problems of the prior art, instant invention overcomes existing those skilled in the art and recognize employing spline
Set limit screw thread pair towards unscrew direction rotational release loosing Prevention Technology scheme, because of spline set be difficult to or cannot be from the first spline hole
Take out, cause the inertial thinking that has no value for use.
The technical problem to be solved in the present invention is to provide one and need not spline part, is also not required to be provided with in spline set periphery
Spline overlap outer rotation prevention portion, on attached body processing with spline set periphery cooperation spline hole retrain spline overlap rotate relative to attached body,
Simple in construction, spline are overlapped the fastening structure of easy installation and removal, spline structure, are fastenedly connected assembly, crankshaft connecting rod system.
A kind of fastening structure, including being fastenedly connected assembly, parent, attached body；It is fastenedly connected assembly and includes screw rod；Screw rod
Including external thread part, spline blocking part, spline blocking part radially protruding external thread part；Attached body is provided with the external thread part with screw rod
The through hole coordinated, parent is provided with the hole that the external thread part with screw rod coordinates；Screw rod is through the hole of the through hole on attached body with parent
It is installed together；It is fastenedly connected assembly and also includes spline set；The periphery of the spline blocking part of screw rod is provided with evenly distributed, the axle of circumference
To screw rod rotation prevention portion；Being provided only with an axial spline through hole on spline set, the hole wall of spline through hole is provided with and screw rod
Rotation prevention portion in the spline set that rotation prevention portion coordinates；An end face of spline set is axially convexly equipped with constraint spline set unscrew towards screw rod
Spline that direction rotates set spline boss, spline set spline boss keep out position in circumferential direction, unscrew direction towards screw rod；
The side deviating from parent on attached body is provided with and the attached body spline hole of spline set spline boss matched in clearance；Spline set is arranged on screw rod
Spline blocking part outside, spline set spline boss inserts in attached body spline hole, and spline set by axial limiting in the spline of screw rod
Outside blocking part；Screw rod rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set, spline set spline boss
Kept out constraint spline set in the side unscrewing direction towards screw rod by attached body spline hole to rotate relative to attached body；Screw rod is non-rotatably
It is installed together with parent, attached body.
A kind of fastening structure, including being fastenedly connected assembly, parent, attached body；It is fastenedly connected assembly and includes screw rod；Screw rod
Including external thread part, spline blocking part, spline blocking part radially protruding external thread part；Attached body is provided with the external thread part with screw rod
The through hole coordinated, parent is provided with the hole that the external thread part with screw rod coordinates；It is fastenedly connected assembly and also includes spline set, spline
Pad；The periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；Spline set is provided only with one
Individual axial spline through hole, the hole wall of spline through hole is provided with rotation prevention portion in the spline set coordinated with screw rod rotation prevention portion；In spline
Axially being convexly equipped with constraint spline set on one end face of set and unscrew, towards screw rod, the spline set spline boss that direction rotates, spline set is only
Turn boss keeps out position in circumferential direction, unscrew direction towards screw rod；Spline pad is provided with the external thread part with screw rod join
The through hole closed and the spline pad spline hole of spline set spline boss matched in clearance；At spline pad towards projection on the end face of attached body
There is spline pad spline boss；The height of spline set spline boss, less than or equal to the thickness of spline pad, is provided with on attached body and stops
Turn the attached body spline hole that pad spline boss coordinates；Screw rod is installed through the hole of the through hole on the through hole of spline pad, attached body with parent
Together；Spline pad spline boss retrains spline pad in inserting attached body spline hole and rotates relative to attached body；Spline set is arranged on screw rod
Spline blocking part outside, spline set spline boss inserts in spline pad spline hole, and spline set by axial limiting at screw rod only
Turn outside blocking part；Screw rod rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set, and spline set spline is convex
Platform is kept out constraint spline set in the side unscrewing direction towards screw rod by spline pad spline hole and is rotated relative to spline pad；Screw rod can not
It is installed together with parent, attached body, spline pad rotatably.
A kind of spline structure, spline structure includes spline set, and spline set, for ring-type, is provided only with one axially on spline set
Spline through hole, the hole wall of spline through hole is provided with rotation prevention portion in circumference evenly distributed, axial spline set；At spline set
Axially it is convexly equipped with on one end face and coordinates with attached body spline hole and/or spline pad spline hole, retrain spline set towards the screw rod side of unscrewing
To the spline set spline boss rotated, spline set spline boss keep out position in circumferential direction, unscrew direction towards screw rod.
As the improvement of scheme three, the height of spline set spline boss is more than the axial length of rotation prevention portion in spline set.
As the improvement of scheme three, spline structure also includes spline pad；Spline pad is provided with the external thread part with screw rod
The through hole coordinated and the spline pad spline hole of spline set spline boss matched in clearance；Spline pad towards on the end face of attached body, axle
To being convexly equipped with the spline pad spline boss coordinated with attached body spline hole；The height of spline set spline boss is less than or equal to spline pad
Thickness.
As the improvement of scheme three, spline structure also includes spline pad；Spline pad is provided with the external thread part with screw rod
The through hole coordinated and the spline pad spline hole of spline set spline boss matched in clearance；Set from the side of spline set in spline acting as a cushion
There is Embedded Division or be coated with friction particles；Embedded Division is that the embedding that is arranged on the end face of spline pad is protruding or for being only arranged on
Turn the built-in edges outside pad；The height of spline set spline boss is less than or equal to the thickness of spline pad.
As the improvement of scheme three, spline set includes ring-type spline set body, and the shaft core position at spline set body sets
There is central through hole, be axially convexly equipped with the end radially-inwardly shape of plural elastic arm, elastic arm from spline set body homonymy
Becoming limiting section, be provided with rotation prevention portion in spline set on the medial surface of limiting section, limiting section is provided with the inner side of the interior rotation prevention portion of spline set
Face forms the spline through hole of non-closed；Spline set spline boss and limiting section homonymy.
As the improvement of scheme three, spline set also includes elastic arm；Spline set is provided with and connects and bullet with spline through hole
Property arm coordinate, be used for house elastic arm and for elastic arm deformation provide deformation space avoiding hollow groove, spline through hole is non-closed
Hole；One end of elastic arm deviates from the side of spline set spline boss and is connected with spline set, and the other end is arranged with spline towards spline
Overlapping the side of spline boss and be radially provided with limiting section in the end of this end to the axle center of spline through hole, limiting section leads to spline
The axis in hole is vertical, limiting section radially protruding spline through hole；Elastic arm is the most right with avoiding hollow groove.
The spline set of this spline structure, puts owing to the interior rotation prevention portion of spline set is arranged on spline rather than is arranged on bullet
On the limiting section of property arm, spline through hole will not be deformed because of external force, and spline is effective.
As the improvement of scheme three, spline structure also includes locating part, a corresponding locating part of spline set；
Locating part includes ring-type locating part body, is provided only with a central through hole in the center of locating part body,
The minimum-value aperture of central through hole is more than the maximum diameter of hole of spline through hole；Also include the plural bullet being connected with locating part body
Property arm, is provided with the limiting section parallel with locating part body, limiting section radial convex in elastic arm end to central through hole axis direction
Go out central through hole；The minimum diameter of plural limiting section is less than the minimum diameter of spline through hole；
Spline set is provided with and coordinates with elastic arm, for housing elastic arm and providing deformation space for elastic arm deformation
Empty avoiding space；Locating part is installed together with spline set, the empty avoiding interference fit that elastic arm overlaps with spline；Locating part spacing
The spline through hole of portion's radially protruding spline set；In the direction parallel with locating part body, the maximum deflection of elastic arm is more than limit
The limiting section of position part protrudes the length of the hole wall of the spline through hole of spline set.
As the improvement of scheme nine, the limiting section of locating part all protrudes locating part body, and locating part body is arranged on spline
On one end face of set, elastic arm axially stretches in empty avoiding space, and limiting section is radially in spline through hole.
The spline limit assembly of this structure, locating part can be plastic parts, and by spline is mounted on forming plastic cement
In the mould of part, when molding locating part, locating part is fixed together with spline set.
As the improvement of scheme nine, the hole wall of the central through hole of locating part is provided with plural groove；Elastic arm
Including the first elastic arm being connected with locating part body, the curved surface bullet bent to the axle center of central through hole along the first elastic arm end
Property arm, the second elastic arm that the end along curved spring arm is formed the most vertically downward, limiting section is arranged on the end of the second elastic arm
Portion；First elastic arm, curved spring arm, the second elastic arm form U-shaped elastic arm, and U-shaped elastic arm is just to groove.
The spline limit assembly of this structure, locating part can be metallic stamping pieces, and and stopped locating part by spot welding
Pivoted housing is fixed together, and cost is relatively low.
As the improvement of scheme three, spline structure also includes locating part；Locating part includes plural elastic spacing one；
Elastic spacing one includes the limiting section of level, the first elastic arm of vertical limiting section bending, along the first elastic arm end to
Limiting section direction and the bending of parallel limiting section, deviate from limiting section direction again and bend the most obliquely, reversely bend the most obliquely again, again
The buckle bent towards limiting section direction and parallel limiting section, then second bent downwards along buckle end is elastic
Arm, then the blocking part of limiting section direction parallel limiting section bending is deviated from along the end of the second elastic arm；
Spline set is provided with and coordinates with elastic arm, for housing elastic arm and providing deformation space for elastic arm deformation
Emptiness avoiding hole；
The empty avoiding that Elastic buckle puts through spline is also led to by the axle center overlapped towards spline by the limiting section of elastic spacing one
Hole, be snapped by elastic spacing one side keep out, side is kept out by blocking part and elastic spacing one and locating part is arranged on one
Rising, the hole wall of the spline through hole of the limiting section radially protruding spline set of elastic spacing one, between two elastic arms of elastic spacing one
Distance protrude the length of hole wall of spline through hole of spline set more than the limiting section of elastic spacing one.
The spline limit assembly of this structure, elastic spacing one can be metallic stamping pieces, and elastic spacing one is directly buckled in
Spline puts and is installed together with spline set by elastic spacing one, low cost, and elastic spacing one is the most detachable relative to spline set, and
And also greatly reduce the material cost of locating part.
A kind of comprise scheme three to six any one spline structure be fastenedly connected assembly, also include screw rod；Outside screw rod includes
Threaded portion, spline blocking part, spline blocking part radially protruding external thread part；The periphery of the spline blocking part of screw rod is provided with circumference all
Even arrangement, axial screw rod rotation prevention portion；Spline set is arranged on outside the spline blocking part of screw rod；Screw rod rotation prevention portion stops in spline set
Transfer part fiting constraint screw rod rotates relative to spline set.
As the improvement of scheme 13, it is fastenedly connected assembly and also includes locating part；Screw rod is provided with draw-in groove；Locating part is
Snap ring, snap ring includes the ring-type snap ring body of non-closed, is provided with more than three radially protruding snap rings in the periphery of snap ring body
The spacing raised line of body；The inner circumferential of snap ring body coordinates with the periphery of the card trench bottom of screw rod；The external diameter of spacing raised line is more than only
The maximum diameter of hole of the spline through hole of pivoted housing；Snap ring is arranged on the interior side that spline set deviates from screw rod spline protuberance of draw-in groove and axially limits
Position.
The snap ring of this structure, snap ring body need not especially greatly can be spacing to spline set, good limit effect.
As the improvement of scheme 13, it is fastenedly connected assembly and also includes locating part；Screw rod is provided with draw-in groove；Snap ring is by line
Spring bending forms, including the ring-type limiting section of the non-closed that the end face deviating from spline set spline boss with spline set coordinates, by ring
The two ends of shape limiting section are to two connecting portions of equidirectional bending, respectively by one end parallel annular limiting section of two connecting portions towards ring-type
Two blocking parts of limiting section direction bending, the distance between two blocking parts is more than or equal to the footpath, the end of draw-in groove, less than draw-in groove
Big external diameter；Two blocking parts of snap ring are arranged on the interior side axial limiting that spline set deviates from screw rod spline protuberance of draw-in groove.
The snap ring of this structure, low cost, only need to open two blocking parts of snap ring during taking-up, convenient to remove.
A kind of comprise scheme three to ten two any one spline structure be fastenedly connected assembly, also include screw rod, locking nut；
Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding external thread part；The periphery of the spline blocking part of screw rod
It is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
An end face of locking nut is axially convexly equipped with for retraining the spline that locking nut rotates relative to parent
Boss；
The external thread part of screw rod is threadeded with locking nut, and spline set is arranged on outside the spline blocking part of screw rod；Screw rod
Rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set.
A kind of comprise scheme seven to ten two any one spline structure be fastenedly connected assembly, also include screw rod；Screw rod includes
External thread part, spline blocking part, spline blocking part radially protruding external thread part；The periphery of the spline blocking part of screw rod is provided with circumference
The limiting section accommodation space that evenly distributed, axial screw rod rotation prevention portion coordinates with limiting section, at limiting section accommodation space towards outward
The face of threaded portion is to keep out face for keep out limiting section；
Spline set is arranged on outside the spline blocking part of screw rod, and elastic arm makes limiting section insert limiting section appearance by elastic deformation
It is empty interior and limited portion accommodation space the face of keeping out and keeps out, spline set is deviated from the side axial limiting of external thread part；Spiral shell
Bar rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set.
A kind of fastening structure including scheme three, four, seven to ten two any one spline structure, also includes parent, attached
Body, include spline structure be fastenedly connected assembly；It is fastenedly connected assembly and also includes screw rod；Screw rod includes that external thread part, spline are supported
Stopper, spline blocking part radially protruding external thread part；Attached body is provided with the through hole that the external thread part with screw rod coordinates, and parent sets
There is the hole that the external thread part with screw rod coordinates；It is fastenedly connected assembly and also includes spline pad；Outside spline pad is provided with screw rod
The through hole of threaded portion cooperation and the spline pad spline hole of spline set spline boss matched in clearance；The height of spline set spline boss
Thickness less than or equal to spline pad；Screw rod is installed together through the hole of the through hole on the through hole of spline pad, attached body with parent；
Being provided with Embedded Division in spline acting as a cushion from the side of spline set, the hardness of attached body is less than the hardness of the Embedded Division of spline pad, spline pad
Embedded Division embed attached internal constraint spline pad rotate relative to attached body；Or it is coated with friction in spline acting as a cushion from the side of spline set
Granule, produces sufficiently large restrictions of the frictional force spline pad and rotates relative to attached body between the friction particles of spline pad with attached body；Or spline
Pad is fixed on attached body constraint spline pad by fixing glue and rotates relative to attached body；Spline set is arranged on the spline blocking part of screw rod
Outward, spline set spline boss inserts in spline pad spline hole, and spline set by axial limiting outside the spline blocking part of screw rod；Spiral shell
Bar rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set, and spline set spline boss is revolving towards screw rod
Loose measure to side by spline pad spline hole keep out constraint spline set rotate relative to spline pad；Screw rod non-rotatably with parent,
Attached body, spline pad are installed together.
As the improvement of scheme 18, also include locking nut；An end face of locking nut is axially convexly equipped with use
Retrain the spline boss that locking nut rotates relative to parent；Spline pad also includes nut spline pad, stopping on nut spline pad
Turn pad spline hole to coordinate with the spline boss of locking nut；The hole coordinated with the external thread part of screw rod on parent is through hole, screw rod
It is connected through the through hole on the through hole on spline pad, attached body, the through hole on parent, the through hole of nut spline pad with locking nut；
Being provided with Embedded Division at nut spline pad towards the side of parent, the hardness of parent is less than the Embedded Division of nut spline pad
Hardness, in the Embedded Division of nut spline pad embeds parent, constraint nut spline pad rotates relative to parent；Or at nut spline pad
It is coated with friction particles towards the side of parent, between the friction particles of nut spline pad and parent, produces sufficiently large frictional force about
Bundle nut spline pad rotates relative to parent；Or nut spline pad by fixing glue be fixed on parent constraint nut spline pad relative
Parent rotates；
Locking nut opposing nut is retrained in the spline pad spline hole of the spline boss insertion nut spline pad of locking nut
Spline pad rotates；Locking nut is non-rotatably installed together with parent.
A kind of fastening structure including scheme three, four, seven to ten two any one spline structure, the fastening of spline structure
Attachment structure, also include parent, attached body, include spline structure be fastenedly connected assembly；
It is fastenedly connected assembly and also includes screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding
External thread part；Parent and attached body are integral type structure, form the annular solid of band fracture；Same respectively at the two ends of the fracture of annular solid
To being provided with the first relative installation portion and the second installation portion；Be provided with on the first installation portion that the external thread part with screw rod coordinates is logical
Hole, is provided with on the second installation portion and coordinates with screw rod and the hole corresponding with the through hole on the first installation portion；The external screw thread of screw rod
Portion is installed together through the hole of the through hole on the first installation portion and the second installation portion；The second installation portion is deviated from first installation portion
Side be provided with and spline set spline boss matched in clearance the first installation portion spline hole；Spline set is arranged on the spline of screw rod and supports
Outside stopper, spline set spline boss inserts in the first installation portion spline hole, and spline set is supported in the spline of screw rod by axial limiting
Outside stopper；Screw rod rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set, and spline set spline boss exists
Unscrew the side in direction towards screw rod to be kept out constraint spline set by the first installation portion spline hole and rotate relative to the first installation portion；Screw rod
Non-rotatably it is installed together with the second installation portion, the first installation portion.
A kind of crankshaft connecting rod system, including bent axle, connection rod set, is fastenedly connected assembly；Connection rod set includes that gonnecting rod body, connecting rod are big
Skull, big end bearing shell；It is fastenedly connected assembly and includes screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part
Radially protruding external thread part；Gonnecting rod body includes big end and small end of connecting rod, and big end is provided with the external thread part with screw rod
The through hole coordinated；Big end lid is provided with the hole that the external thread part with screw rod coordinates；Be fastenedly connected assembly also include spline set,
Locating part；
The periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；On spline set only
Being provided with an axial spline through hole, the hole wall of spline through hole is provided with rotation prevention portion in the spline set coordinated with screw rod rotation prevention portion；
An end face of spline set is axially convexly equipped with constraint spline set and unscrews, towards screw rod, the spline set spline boss that direction rotates, only
Pivoted housing spline boss keep out position in circumferential direction, unscrew direction towards screw rod；Connecting rod cap is deviated from big end
Side is provided with and the major part spline hole that only protuberance coordinates of spline set；Big end bearing shell is filled the span of a man's arms outside bent axle, big end and
Connecting rod cap is filled the span of a man's arms outside big end bearing shell；The external thread part of screw rod sequentially passes through through hole and the big end of big end
The hole covered is installed together；Spline set is arranged on outside the spline blocking part of screw rod, and spline set spline boss inserts major part spline
Kong Zhong, locating part is arranged on screw rod the side axial limiting that spline set deviates from screw rod major part；Screw rod rotation prevention portion and spline set
Interior rotation prevention portion fiting constraint spline set rotates mutually relative to screw rod, and spline set spline boss unscrews direction by major part spline at screw rod
Hole is kept out constraint spline set and is rotated relative to big end, and connecting rod cap and big end are without rotating against, and screw rod is non-rotatable
Ground is installed together with connecting rod cap and big end.
The invention has the beneficial effects as follows:
Screw thread pair should be stoped to rotate locking towards unscrewing direction, keep that mechanical whorl connects again easily and fast, reliably
Ground detachability, is that people endeavour to solve the most not thorough technical barrier solved the most for a long time.
The present invention is arranged on outside the spline blocking part of screw rod by spline set, spline set spline boss inserts attached body spline hole
Or in pad spline hole, spline set spline boss is unscrewing the side in direction by attached body spline hole or pad spline hole towards screw rod
Keep out constraint spline set to rotate relative to attached body；Screw rod rotation prevention portion revolves relative to spline set with rotation prevention portion fiting constraint screw rod in spline set
Turn；Parent, attached body are non-rotatably fastened together by so screw rod.Screw rod cannot rotate, and screw rod would not be because of court
Unscrewing direction to rotate and get loose, make screw rod be maintained at the locked position being initially required, the coupling mechanism force that screw flight connects makes
During with the most unchanged；Even if using common screw rod to be fastenedly connected parent and attached body, severe at strenuous vibration, high temperature etc.
Under environment, the coupling mechanism force that screw flight connects is the most unchanged；Therefore best locking effect, energy are reached
It is prevented effectively from threaded inefficacy.
The height of spline set spline boss is more than the axial length of rotation prevention portion in spline set, when the spline of fastening structure
When set is arranged on outside the spline blocking part of screw rod, in the spline set of spline set, rotation prevention portion does not contacts with the screw rod rotation prevention portion of screw rod
Before, the keeping out position and can contact with attached body spline hole or pad spline hole unscrewing direction towards screw rod of spline set spline boss,
So that spline the keeping out of spline boss of set inserting attached body spline hole or pad spline hole is located proximate to attached body spline hole or pad
Sheet spline hole, or contact with attached body spline hole or pad spline hole.
Screw rod to get loose, it is necessary to rotates towards unscrewing direction, owing to keeping out of spline set spline boss is only located proximate to attached body
Turning hole or pad spline hole, or contact with attached body spline hole, screw rod one rotates towards unscrewing direction, spline set spline boss towards
Screw rod unscrews the side in direction and is i.e. kept out by attached body spline hole, even if therefore spline set spline boss is joined with attached body spline interporal lacuna
Close, spline set also cannot rotate towards unscrewing direction or towards unscrew direction be only capable of rotating little by little, spline set spline boss the most attached
Body spline hole is kept out, and spline set cannot cannot invert by rotation condition screw rod, can be prevented effectively from screw rod towards unscrewing direction and rotate pine
De-, spline is effective.
Screw rod rotation prevention portion circumference is evenly arranged in outside the spline blocking part of screw rod, such screw rod rotation prevention portion and matched
Spline set in rotation prevention portion just can be at least more than 6, the integral multiple that number is screw rod rotation prevention portion of the interior rotation prevention portion of spline set,
The structure that spline set coordinates with the spline blocking part of screw rod can be gear shape, spline shape or regular polygon etc., thus ensure that spiral shell
The pretightning force that stricture of vagina connects meets use requirement, and locking effect is good.If keeping out of spline set spline boss is only located proximate to attached body
Turn hole or pad spline hole, then spline effect is the best.
Spline set is provided only with a spline through hole, is fastenedly connected the applied widely of assembly, not by parent and attached body
The upper pitch-row being used for installing the hole of screw rod limits.This fastening structure, more compact structure, more meet general standard component tight
The installation of firmware and use habit, can be designed to standard component.
Spline set is provided with spline set spline boss, attached body is provided with attached body spline through hole, overlaps spline by spline
Boss retrains spline with the cooperation of attached body spline hole and overlaps relative attached body, only need to process on attached body or molding is convex with spline set spline
The attached body spline hole that platform coordinates, attached body spline hole is generally circular hole, and processing cost is low.
By spline pad spline, the side deviating from spline set at spline pad is provided with Embedded Division, the Embedded Division of spline pad
Embed attached internal constraint spline pad to rotate relative to attached body, it is not necessary on attached body, processing coordinates with spline set spline boss
Hole, attached body need not the spline structure that any constraint spline set rotates, and spline pad can make standard component, thus is substantially reduced
Cost.When dismounting is fastenedly connected assembly, spline pad is not required to separate with attached body, it can thus be ensured that the Embedded Division of spline pad embeds
Attached internal constraint spline pad rotates relative to attached body.
By spline pad spline, the side deviating from spline set at spline pad is provided with pad spline boss, and pad spline is convex
Platform retrains spline pad in inserting attached body spline hole and rotates relative to attached body, and spline set spline boss coordinates to come about with pad spline hole
Bundle spline set rotates relative to attached body, need to process on attached body or attached body spline hole that molding coordinates with pad spline boss, attached
Body spline hole is generally circular hole, and processing cost is low.
By spline pad spline, spline pad is bonded on attached body constraint spline pad by fixing glue and rotates relative to attached body,
Need not the hole that processing coordinates with spline set spline boss on attached body, attached body need not stopping of any constraint spline set rotation
Rotation structure, spline pad can make standard component, thus is substantially reduced cost, also unrestricted to the material of attached body, only needs attached body surface
Face is smooth, and cost is the lowest, also will not destroy attached surface.When dismounting is fastenedly connected assembly, spline pad is not required to attached
Body separates.
Spline set spline boss rotates relative to attached body with attached body spline hole or pad spline hole fiting constraint spline pad, is not required to
To be provided with spline in spline set periphery and to overlap outer rotation prevention portion, it is not necessary to overlap, with the spline of spline set periphery, the spline that outer rotation prevention portion coordinates
Hole retrains spline set and rotates relative to attached body；Because overlapping, with spline, the spline hole coordinated without processing on attached body, also it is not required to
Want one be nonrotatably mounted tO with attached body together with, be provided with and overlap, with spline, the spline part in spline hole that outer rotation prevention portion coordinates, also
Need not on spline set, design plural spline through hole rotate to retrain spline set.Relatively on attached body processing be provided with
Spline overlaps the spline hole that outer rotation prevention portion coordinates, and processing cost is substantially reduced.Relatively come about with attached body spline part un-rotatably
Bundle spline set rotates relative to attached body, saves spline part, eliminates and installs spline part in erecting bed, saves set-up time one-tenth
This, greatly reduce cost.
It is generally matched in clearance, it is simple to the installation of spline set and taking-up between spline set and screw rod blocking part.Due to spline
Set is not installed in spline hole, exposes completely, and it is easy for installation, quick that spline is overlapped；Even if the dismounting of spline set is by tearing open
Unload instrument also can dismantle easily, convenient disassembly, quickly, reliable.
Spline puts and is provided with elastic arm, is provided with limiting section in the end of elastic arm, it is no longer necessary to locating part is to spline set limit
Position.Spline structure includes spline set and locating part, is provided with elastic arm, is provided with limiting section in the end of elastic arm on locating part；
Just locating part and spline set are installed together in factory, and standard component can be made, in factory, owing to can realize automatically being turned into
Industry, therefore installation effectiveness is high.The spline set being provided with elastic arm and the spline structure of the locating part including being provided with elastic arm, at screw rod
Erecting bed, it is no longer necessary to installing locating part, the most quick for installation, efficiency is high.
Locking nut is provided with spline boss constraint locking nut rotate relative to parent, is not required on parent processing as interior
Hexagon rings etc., reduce cost.Spline pad also includes locking nut spline pad, and the Embedded Division of spline pad embeds constraint spline in parent
Pad rotate relative to parent or spline pad friction particles with produce the sufficiently large relative attached body of restrictions of the frictional force spline pad between attached body
Rotate, spline pad is fixed on attached body constraint spline pad by fixing glue and rotates relative to attached body, is not required on parent processing constraint
The spline structure that locking nut rotates relative to parent, reduces cost.
The spline structure of the present invention, equally applicable to locking nut spline.
Parent and attached body are integral type structure, form the annular solid of band fracture, the fastening structure of this mechanism, are used for
When connecting other part, owing to screw rod will not rotate relative to the first installation portion and the second installation portion, even if at fastening structure
Bear power or fastening structure greatly and be in the environment etc. of strenuous vibration, also will not unscrew direction because of screw rod court and rotate
Cause threaded inefficacy, it is ensured that the second installation portion, the first installation portion are reliably fastened together by screw rod.
Use the crankshaft connecting rod system being fastenedly connected assembly of the present invention, by being fastenedly connected the company that assembly is fixed together
The body of rod and connecting rod cap, owing to screw rod will not rotate relative to gonnecting rod body, the big skull of screw rod, even if therefore gonnecting rod body bears the biggest
Soil fertility or crankshaft connecting rod system are in the environment etc. of strenuous vibration, also will not rotate because of screw rod and cause screw thread towards unscrewing direction
Joint failure, so guarantee that gonnecting rod body is reliably mounted on connecting rod cap together with, Accident prevention occurs.
Spline set is provided with spline hole, attached body is provided with the spline boss that the spline hole with spline set coordinates, is this
One simple substitute equivalents of invention, falls within protection scope of the present invention certainly.Spline boss is arranged on attached body, removes
Non-is moulding, cast member etc., the boss of molding spline the most together when the attached body of molding, if processing spline boss, cost is the highest,
Therefore the most no longer describe.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view of the fastening structure of embodiment 1.
Fig. 2 is the cross-sectional schematic that the fastening structure of embodiment 1 crosses screw rod shaft core position cutting.
Fig. 3 is the cross-sectional schematic that the fastening structure of embodiment 2 crosses screw rod shaft core position cutting.
Fig. 4 is the perspective exploded view of the fastening structure of embodiment 2.
Fig. 5 is the perspective exploded view of the fastening structure of embodiment 3.
Fig. 6 is the cross-sectional schematic that the fastening structure of embodiment 3 crosses screw rod shaft core position cutting.
Fig. 7 is the schematic perspective view of the fastening structure of embodiment 4.
Fig. 8 is the perspective exploded view being fastenedly connected assembly of embodiment 4.
Fig. 9 is the schematic perspective view of the fastening structure of embodiment 5.
Figure 10 is the perspective exploded view being fastenedly connected assembly of embodiment 5.
Figure 11 is the cross-sectional schematic that the fastening structure of embodiment 6 crosses screw rod shaft core position cutting.
Figure 12 is the perspective exploded view being fastenedly connected assembly of embodiment 6.
Figure 13 is the perspective exploded view being fastenedly connected assembly of embodiment 7.
Figure 14 is the cross-sectional schematic that the fastening structure of embodiment 7 crosses screw rod shaft core position cutting.
Figure 15 is the perspective exploded view being fastenedly connected assembly of embodiment 8.
Figure 16 is the cross-sectional schematic that the fastening structure of embodiment 8 crosses screw rod shaft core position cutting.
Figure 17 is the perspective exploded view being fastenedly connected assembly of embodiment 9.
Figure 18 is the cross-sectional schematic that the fastening structure of embodiment 9 crosses screw rod shaft core position cutting.
Figure 19 is that the spline of embodiment 9 overlaps the perspective exploded view vertical with locating part.
Figure 20 is the schematic perspective view of the fastening structure of embodiment 10.
Figure 21 is the perspective exploded view of the fastening structure of embodiment 10.
Figure 22 is the cross-sectional schematic that the fastening structure of embodiment 10 crosses screw rod shaft core position cutting.
Figure 23 is the perspective exploded view of the fastening structure of embodiment 11.
Figure 24 is the perspective exploded view being fastenedly connected assembly of embodiment 12.
Figure 25 is the perspective exploded view being fastenedly connected assembly of embodiment 13.
Figure 26 is the cross-sectional schematic that the fastening structure of embodiment 14 crosses screw rod shaft core position cutting.
Figure 27 is the cross-sectional schematic that the fastening structure of embodiment 15 crosses screw rod shaft core position cutting.
Figure 28 is the perspective exploded view of the fastening structure of embodiment 15.
Figure 29 is the cross-sectional schematic that the fastening structure of embodiment 16 crosses screw rod shaft core position cutting.
Figure 30 is the schematic perspective view of the fastening structure of embodiment 16.
Figure 31 is the schematic perspective view of the fastening structure of embodiment 17.
Figure 32 is the perspective exploded view being fastenedly connected assembly of embodiment 17.
Figure 33 is the perspective exploded view being fastenedly connected assembly of embodiment 18.
Figure 34 is the schematic perspective view of the fastening structure of embodiment 19.
Figure 35 is the cross-sectional schematic that the fastening structure of embodiment 19 crosses screw rod shaft core position cutting.
Figure 36 is the perspective exploded view of the fastening structure of embodiment 19.
Figure 37 is the perspective exploded view of the fastening structure of embodiment 20.
Figure 38 is the cross-sectional schematic that the fastening structure of embodiment 20 crosses the shaft core position cutting of screw rod.
Figure 39 is the cross-sectional schematic that the fastening structure of embodiment 21 crosses the shaft core position cutting of screw rod.
Figure 40 is the perspective exploded view of the fastening structure of embodiment 21.
Figure 41 is the perspective exploded view being fastenedly connected assembly of embodiment 22.
Figure 42 is the perspective exploded view being fastenedly connected assembly of embodiment 23.
Figure 43 is the cross-sectional schematic that the fastening structure of embodiment 23 crosses the shaft core position cutting of screw rod.
Figure 44 is the perspective exploded view of the fastening structure of embodiment 24.
Figure 45 is the screw rod perspective exploded view with spline set of embodiment 24.
Figure 46 is the cross-sectional schematic that the fastening structure of embodiment 24 crosses the shaft core position cutting of screw rod.
Figure 47 is the perspective exploded view being fastenedly connected assembly of embodiment 25.
Figure 48 is the perspective exploded view being fastenedly connected assembly of embodiment 26.
Figure 49 is the cross-sectional schematic that the fastening structure of embodiment 26 crosses the shaft core position cutting of screw rod.
Figure 50 is the close-up schematic view of the a-quadrant of Figure 49.
Figure 51 is the spline set schematic perspective view with elastic spacing one of embodiment 27.
Figure 52 is the cross-sectional schematic that the fastening structure of embodiment 27 crosses the shaft core position cutting of screw rod.
Figure 53 is the close-up schematic view of the a-quadrant of Figure 52.
Figure 54 is the schematic perspective view of the spline set locating part of embodiment 28.
Figure 55 is the schematic perspective view of the spline set locating part of embodiment 29.
Figure 56 is the stereo decomposing signal of the crankshaft connecting rod system of embodiment 30.
Figure 57 is the cut-away illustration that the axis cutting of two screw rods crossed by the crankshaft connecting rod system of embodiment 30.
Detailed description of the invention
Embodiment 1
As shown in Figure 1 and Figure 2, one is fastenedly connected assembly, and including screw rod 1, spline set 2, locating part, locating part is for keeping out
Nut 3.
Screw rod 1 includes the external thread part 4 being arranged in order, the spline blocking part 5 of external tooth wheel shape, is mounting and dismounting screw rod 1
Time the spanner clamping clamping part 6 of position and external thread part 7 are provided.Spline blocking part 5 radially protruding external thread part 4 and clamping part 6, folder
Hold portion 6 radially protruding external thread part 7.The periphery of spline blocking part 5 is provided with multiple lance tooth uniformly circumferentially arranged, one three
Angular teeth forms a screw rod rotation prevention portion 8.The periphery of clamping part 6 is regular hexagon.
Spline set 2 is circular, and the gap, spline blocking part 5 that the shaft core position of spline set 2 is provided with external gear shape is joined
The spline through hole 9 of the axial internal gear shape closed, the hole wall of spline through hole 9 is provided with multiple triangle being uniformly circumferentially distributed
Groove, the single vee gutter on the hole wall of spline through hole 9 forms rotation prevention portion in a spline set coordinated with screw rod rotation prevention portion 8
10.The spline boss 11 of an axially projecting column on an end face of spline set 2, spline boss 11 keep out position in week
To direction, unscrew direction towards screw rod.The height of spline boss 11 is more than the axial length of rotation prevention portion 10 in spline set.So exist
Before in the spline set of spline set 2, rotation prevention portion 10 do not contacts with the screw rod rotation prevention portion 8 of screw rod 1, spline boss 11 keep out position energy
Contact with spline circular hole 17.
Keeping out nut 3 is stairstepping, and the shaft core position keeping out nut 3 is provided with the screw thread that the external thread part 7 with screw rod 1 coordinates
Through hole 12, connects with tapped through hole 12, for the emptiness avoiding hole 13 of clamping part 6 of empty avoiding screw rod 1.
Fastening structure includes above-mentioned being fastenedly connected assembly, parent 14, attached body 15.
Attached body 15 is provided with the through hole 16 that the external thread part 4 with screw rod 1 coordinates, and the side deviating from parent 14 at attached body 15 sets
There is the spline circular hole 17 coordinated with spline boss 11.
Parent 14 is provided with the tapped blind hole 18 of external thread part 4 threaded engagement with screw rod 1.
The external thread part 4 of screw rod 1 sequentially passes through tapped blind hole 18 screw thread of the through hole 16 on attached body 15 and parent 14 even
Connecing, the end face axial of side, spline blocking part 5 keeps out attached body 15, and parent 14 is fastened together by screw rod 1 with attached body 15.Only
Pivoted housing 2 is arranged on outside the spline blocking part 5 of screw rod 1, the keeping out of spline boss 11 be located proximate to attached body 15 spline circular hole 17 or
Contacting with spline circular hole 17, the screw rod rotation prevention portion 8 of lance tooth inserts in the interior rotation prevention portion 10 of spline set of corresponding vee gutter,
The spline boss 11 of spline set 2 inserts in the spline circular hole 17 of attached body 15, keeps out nut 3 and is arranged on the external thread part 7 of screw rod 1
On, the clamping part 6 of screw rod 1 is placed in emptiness avoiding hole 13, keeps out nut 3 and spline set 2 deviates from the side axial limiting of attached body 15.Only
Turn boss 11 kept out by the spline circular hole 17 of attached body 15 in the side unscrewing direction towards screw rod, screw rod 1 through spline set 2 only
Turning through hole 9 jointly to retrain spline set and 2 rotate relative to attached body 15, screw rod rotation prevention portion 8 is with rotation prevention portion 10 fiting constraint in spline set only
Pivoted housing 2 rotates relative to screw rod 1 phase, parent 14 and attached body 15 without rotating against, therefore screw rod 1 non-rotatably with parent 14 and attached
Body 15 is installed together.
Embodiment 2
As shown in Figure 3, Figure 4, as different from Example 1, keeping out nut 31 is that the external thread part 33 with screw rod 32 coordinates
Outer-hexagonal nut.
External thread part 34 that screw rod 32 includes being arranged in order, spline blocking part 35, external thread part 33.Spline blocking part 35 is wrapped
Including periphery is cylindrical to keep out boss ring 36 and rotation prevention portion 37 that periphery is regular hexagon, rotation prevention portion 37 and external thread part 33 phase
Even.Six screw rod rotation prevention portions 37 that six planar shaped of the periphery of rotation prevention portion 37 arrange circumferentially.Keep out boss ring 36 radial convex
External threads portion 34 and rotation prevention portion 37, rotation prevention portion 37 radially protruding external thread part 33.
The shaft core position of spline set 39 is provided with the axial spline through hole 40 of rotation prevention portion 37 matched in clearance with screw rod 32, with
Spline through hole 40 connects, the emptiness avoiding hole 38 keeping out boss ring 36 of empty avoiding screw rod 32.The hole wall of spline through hole 40 is two structures
Identical regular hexagon hole rotates the intersection of 30 °, forms 12 pointed shape grooves, often on the hole wall of spline through hole 40
Individual pointed shape groove is intersected planar shaped by the two of regular hexagon hole, and the two of pointed shape groove are intersected planar shaped and become and rotation prevention portion 37
Screw rod rotation prevention portion 41 coordinate spline set in rotation prevention portion 42.Spline set 39 nearly emptiness avoiding holes 38 end face on axially projecting one
Spline boss 43.
The spline through hole 40 of spline set 39 is arranged on outside the rotation prevention portion 37 of screw rod 32, and the bulge loop of keeping out of screw rod 32 is placed in spline
In the emptiness avoiding hole 38 of set 39.
Embodiment 3
As shown in Figure 5, Figure 6, as different from Example 2, locating part is snap ring 51.
Screw rod 52 includes external thread part 53, clamping part 54, spline blocking part 55 and the installation portion of cylinder being arranged in order
59.The periphery of spline blocking part 55 is provided with multiple stepped tooth uniformly circumferentially arranged, and a stepped tooth forms a screw rod spline
Portion 56.The periphery of clamping part 54 is regular hexagon.Installation portion 59 is provided with the draw-in groove 60 coordinated with snap ring 51.Clamping part 54 is radially
Protrude external thread part 53 and with spline blocking part 55, spline blocking part 55 is from radially protruding installation portion 59.
Fastening structure is as different from Example 1, right in the draw-in groove 60 of the installation portion 59 that snap ring 51 is buckled in screw rod 52
Spline set 57 deviates from the side axial limiting of attached body 58.
Embodiment 4
As shown in Figure 7, Figure 8, as different from Example 1, locating part is snap ring 71.
Screw rod 72 includes external thread part 73, spline blocking part 74, clamping part 75 and the installation portion of cylinder being arranged in order
76.The periphery of spline blocking part 74 is provided with multiple stepped tooth uniformly circumferentially arranged, and a stepped tooth forms a screw rod spline
Portion 77, the periphery of clamping part 75 is regular hexagon, and installation portion 76 is provided with the draw-in groove 78 coordinated with snap ring 71, spline blocking part 74
Radially protruding external thread part 73 and clamping part 75, clamping part 75 radially protruding installation portion 76.
Described snap ring 71 is formed by metal wire rod bending, joins including deviating from the end face arranging spline boss with spline set 79
The circular limiting section 81 of the non-closed closed, by the equidirectional bending of the ring-type limiting section of two ends vertical circular 81 of circular limiting section 81
Two connecting portions 82, bent towards ring-type limiting section 81 direction by the ring-type limiting section of one end parallel circle 81 of two connecting portions 82 respectively
Two parallel blocking parts 83, and the ring-type crawl that end in two blocking parts 83 is the most reversely bent to form after outwards bending respectively
Portion 84；The empty avoiding space 80 coordinated with the periphery bottom draw-in groove 78 is formed between two blocking parts 83.
In the draw-in groove 78 of the installation portion 76 that two blocking parts 83 of snap ring 71 are arranged on screw rod 72, the ring-type limiting section of snap ring 71
81 keep out and deviate from, at spline set 79, the side axial limitings on the end face of spline boss, spline set 79 being deviated from attached body.
Embodiment 5
As shown in Figure 9, Figure 10, as different from Example 1, locating part is snap ring 91.
Screw rod 92 includes external thread part 93, the spline blocking part 94 being arranged in order.Spline blocking part 94 includes that periphery is round
Cylindricality keep out boss ring 95 and rotation prevention portion 96 that periphery is regular hexagon, keep out boss ring 95 and be placed in external thread part 93 and spline
Between portion 96.Rotation prevention portion 96 is provided with the draw-in groove 97 coordinated with snap ring 91, and six planar shaped of the periphery of rotation prevention portion 96 are circumferentially
Six screw rod rotation prevention portions 105 of arrangement.Keep out boss ring 95 radially protruding external thread part 93 and rotation prevention portion 96.
The shaft core position of spline set 99 is provided with the axial spline through hole 98 that the rotation prevention portion 96 with screw rod 92 coordinates, and spline is led to
The hole wall in hole 98 is the intersection that the regular hexagon hole that two structures are identical rotates 30 °, shape on the hole wall of spline through hole 98
Becoming 12 pointed shape grooves, each pointed shape groove is intersected planar shaped by the two of regular hexagon hole, the two of pointed shape groove
Intersecting plane forms rotation prevention portion 106 in the spline set coordinated with the screw rod rotation prevention portion 105 of screw rod 92, at an end of spline set 99
An axially projecting spline boss 100 on face.
Snap ring 91 includes the circular snap ring body 101 of non-closed, and the periphery of snap ring body 101 is uniformly distributed six footpaths
To the spacing raised line 102 protruded, it is equipped with dismounting through hole 103 in the end at snap ring 97 body two ends.Spacing raised line 102 is radially
The periphery of the draw-in groove 97 on protrusion screw rod 92, the maximum outside diameter of spacing raised line 102 is more than the maximum diameter of hole of spline through hole 98；Snap ring
The inner circumferential of body 101 coordinates with the periphery bottom the draw-in groove 97 of the spline blocking part 94 of screw rod 92.
Spline set 99 is arranged on outside the rotation prevention portion 96 of screw rod 92, and the snap ring body 101 of snap ring 91 is arranged on stopping of screw rod 92
In the draw-in groove 97 of transfer part 96, the spacing raised line 102 of snap ring 91 is kept out spline and is overlapped the end face of 99 sides deviating from attached body 104 to spline
Set 99 deviates from the side axial limiting of attached body 104.
During dismantling screw 92, it extend in two dismounting through holes 103 with special clamp type tool, then be flared out snap ring
91, snap ring 91 just can take off from the draw-in groove 97 of screw rod 92.
Embodiment 6
As shown in Figure 11, Figure 12, as different from Example 1, one is fastenedly connected assembly, including screw rod 111, spline set
112, it is not required to locating part.
Screw rod 111 includes external thread part 113, the spline blocking part 114 of external gear shape and cylindrical with chamfering
Spacing blocking part 115.Spline blocking part 114 is placed between external thread part 113 and spacing blocking part 115, footpath, spacing blocking part 115
To protruding spline blocking part 114, spline blocking part 114 radially protruding external thread part 113.The periphery of spline blocking part 114 is outward
Gear shape, the periphery of spline blocking part 114 is provided with multiple stepped tooth uniformly circumferentially arranged, and a stepped tooth forms a spiral shell
Bar rotation prevention portion 116.
Spline set 112 includes ring-type spline set body 127, and the shaft core position at spline set body 127 is provided with center and leads to
Hole 117, is uniformly distributed three elastic arms 118 on the hole wall of central through hole 117.Each elastic arm 118 includes from central through hole
Horizontal projections 119 that the hole wall of 117 is formed radially inward, the U-shaped elastic arm that axle is formed down the most again
120；Be formed radially inward in the end of U-shaped elastic arm 120 limiting section 121, be provided with on the medial surface of three limiting sections 121 with
Multiple triangles uniformly circumferentially arranged of the internal gear shape that spline blocking part 114 part of screw rod 111 external gear shape coordinates
Shape groove, the single vee gutter on the medial surface of limiting section 121 stops in forming a spline set coordinated with screw rod rotation prevention portion 116
Transfer part 122, the vee gutter on the medial surface of three limiting sections 121 forms the spline through hole 123 of non-closed.Spline set 112 back of the body
An axially projecting spline boss 124 on the end face of U-shaped elastic arm 120.The periphery of spline blocking part 114 and spacing blocking part
115 form the limiting section accommodation space of accommodating limiting section 121 towards the end face of spline blocking part 114.
As different from Example 1, the U-shaped elastic arm 120 of spline set 112 is placed in fastening structure by elastic deformation
Outer and spline set 112 the spline boss 124 of the rotation prevention portion of screw rod 111 inserts in the spline hole 126 of attached body 125, spline set 112
Limiting section 121 is kept out towards the end face of spline blocking part 114 by the spacing blocking part 115 of screw rod 111 and is deviated from attached to spline set 112
The side axial limiting of body 125.
Embodiment 7
As shown in Figure 13, Figure 14, as different from Example 6, spline set 141 includes ring-type spline set body 142,
The shaft core position of spline set body 142 is provided with central through hole 143, extends in the same direction along the spline set periphery of body 142 and inner circumferential and sets
Having mutually level outer bulge loop 144 and internal projecting ring 145, on internal projecting ring 145, the end face along internal projecting ring 145 is radially provided with three
Individual limiting section 146, along the circumferential both sides of each limiting section 146, centered by central through hole 143 axle center, point is provided with incision internal projecting ring
145 and partial cut spline set body 142 radial straight line grooving 147, the internal projecting ring 145 being connected with limiting section 146 and
Spline set body 142 forms elastic arm 148, limiting section 146, the internal projecting ring 145 being connected with limiting section 146 and spline set body
142 form elastic spline blocking part 149.The medial surface of three limiting sections 146 is provided with and screw rod 150 external gear shape
Multiple vee gutters uniformly circumferentially arranged of the internal gear shape that spline blocking part 151 part coordinates, the inner side of limiting section 146
Single dovetail groove on face forms rotation prevention portion 153 in a spline set coordinated with screw rod rotation prevention portion 152, three limiting sections 146
Medial surface on vee gutter formed non-closed spline through hole.Spline set body 142 towards internal projecting ring 145 side,
An axially projecting spline boss 154 between internal projecting ring 145 and outer bulge loop 144.The periphery of spline blocking part 151 and spacing keep out
Portion 157 forms the limiting section accommodation space of accommodating limiting section 146 towards the end face of spline blocking part 151.
The elastic arm 148 of spline set 141 is placed in outside the spline blocking part 151 of screw rod 150 and spline set by elastic deformation
The spline boss 154 of 141 inserts in the spline circular hole 156 of attached body 155, and the limiting section 146 of spline set 141 is by the limit of screw rod 150
The side axial limitings that spline set 141 deviates from attached body 155 are kept out in blocking part 157, position towards the end face of spline blocking part 151.
Embodiment 8
As shown in Figure 15, Figure 16, as different from Example 6, screw rod 171 includes external thread part 172, blocking part successively
173, rotation prevention portion 174, rotation prevention portion 174 radially protruding blocking part 173.Blocking part 173 and rotation prevention portion 174 form the spline of screw rod and support
Stopper.
Spline set 175 includes ring-type spline set body 176, and the shaft core position at spline set body 176 is provided with center and leads to
Hole 180, the periphery along spline set body 176 extends in the same direction with inner circumferential and to be provided with mutually level outer bulge loop 177 and internal projecting ring 178,
On internal projecting ring 178, the end face along internal projecting ring 178 is radially provided with three limiting sections 179, along the circumference of each limiting section 179
Both sides, centered by central through hole 180 axle center, point is provided with and cuts internal projecting ring 178 radiation of partial cut spline set body 176
The straight line grooving 181 of shape, the internal projecting ring 178 being connected with limiting section 179 and spline set body 176 form elastic arm 182.At convex
It is not provided with the medial surface of limiting section 179 on ring 178 to be provided with in the rotation prevention portion 174 of the external gear shape with screw rod 171 coordinates
Multiple dovetail grooves uniformly circumferentially arranged of gear shape, what single dovetail groove formation one coordinated with screw rod rotation prevention portion 183 stops
Rotation prevention portion 184 in pivoted housing, the vee gutter on the medial surface of three limiting sections 179 forms the spline through hole 185 of non-closed.Only
Pivoted housing body 176 is towards a spline boss axially projecting between side, internal projecting ring 178 and the outer bulge loop 177 of internal projecting ring 178
186.The limiting section that the periphery of blocking part 173, rotation prevention portion 174 form accommodating limiting section 179 towards the end face of blocking part 173 houses
Space.
The interior rotation prevention portion 184 of spline set of spline set 175 is placed in outside the rotation prevention portion 174 of screw rod 171, the elasticity of spline set 175
Outer and spline set 175 the spline boss 186 in blocking part 173 that arm 182 is placed in screw rod 171 by elastic deformation inserts attached body 187
Spline circular hole 188 in, spline set 175 limiting section 179 supported towards the end face of blocking part 173 by the rotation prevention portion 174 of screw rod 171
Keep off the side axial limiting that spline set 175 is deviated from attached body 187.
Embodiment 9
As shown in Figures 17 to 19, as different from Example 1, screw rod 201 includes external thread part 202, blocking part successively
203, the clamping part 205 of the rotation prevention portion 204 of external tooth wheel shape, regular hexagon, blocking part 203 radially protruding external thread part 202, spline
Radially protruding blocking part, portion 204 203 and clamping part 205.Blocking part 203 and rotation prevention portion 204 form spline blocking part 206, keep out
The periphery in portion 203 and rotation prevention portion 204 form limiting section accommodation space 219 towards the face of external thread part 202.
Locating part is plastic parts, including circular locating part body 207, locating part body 207 peripheral shape and spline
Overlapping 208 peripheral shape to coordinate and similar, in locating part body 207, circular diameter is slightly larger than the external diameter of the rotation prevention portion 204 of screw rod 201.
The central through hole 218 of locating part body 207 is provided with three with groove 220, along the bottom surface of each groove 220 radially to axis
Direction more axially homonymy protrude locating part body and form three elastic arms 209, along the end of each elastic arm 209 radially to axis
Direction forms the limiting section 210 parallel with locating part body 207, the hole wall of limiting section 210 radially protruding central through hole 218.?
The same end face of locating part body 207 protrudes above six roots of sensation limited post 211, is provided with in the end of limited post 211 and keeps out ring.Spacing
Post 211 and limiting section 210 are placed in the same side of locating part body 207.
Spline set 208 is metalwork, spacing in hole wall uniform three empty avoidings of circumference of the spline through hole 212 of spline set 208
The avoiding hollow groove 213 of the elastic arm 209 of part, is provided with six circumferentially distributed axial spacing with locating part on spline set 208
The installing hole 214 that post 211 coordinates, is provided with three for the avoiding hollow groove 213 taking out locating part in the periphery of spline set 208.Spacing
The minimum diameter of three limiting sections 210 of part is less than the minimum diameter of spline through hole 212.
Spline set 208 after machining is put in the injection mold of molding locating part, injection mo(u)lding locating part, so
The limited post 211 of locating part is overlapped the installing hole 214 of 208 through spline, is fixed on by locating part by the ring of keeping out of limited post 211
On spline set 208, elastic arm 209 is placed in the avoiding hollow groove 213 of spline set 208, limiting section 210 radially protruding spline through hole 212.
Spline set 208 is together arranged on outside the rotation prevention portion 204 of screw rod 201 with locating part, in the spline set of spline set 208 only
Transfer part 217 is placed in outside the screw rod rotation prevention portion 216 of screw rod 201, and the limiting section 210 of locating part is stretched by elastic arm 209 elastic deformation
Keep out towards the end face of blocking part 203, spline set 208 is deviated from attached in entering limiting section accommodation space 219 and by rotation prevention portion 204
The side axial limiting of body 215.
Embodiment 10
As shown in Figure 20 to Figure 22, as different from Example 9, the described assembly that is fastenedly connected also includes circular stopping
Turn pad 241.
Attached body 242 is shaped as torus with parent 243, and attached body 242 periphery is identical with the peripheral shape of parent 243.Attached
The uniform multiple through holes 244 of circumference on body 242, the center of circle of through hole 244 is distributed on the same circumference coaxial with toric axle center.
Parent 243 is provided with and through hole 244 tapped blind hole 245 one to one on attached body 242.The periphery of spline pad 241
Identical with the peripheral shape of attached body 242, spline pad 241 is provided with through hole 244 one_to_one corresponding with attached body 242 and screw rod 246
The through hole 244 that external thread part 247 coordinates, being equipped with and overlap 248 with spline outside each through hole 244 of spline pad 241
The pad spline through hole 244 of spline boss 249 matched in clearance.
Screw rod 246 is corresponding on parent 243 through corresponding pad spline through hole 244, the corresponding through hole 244 of attached body 242
Tapped blind hole 245 threaded.Spline pad 241, attached body 242 and parent 243 are installed together by screw rod 246.
On spline pad 241 by the spline boss 249 just pad spline through hole 244 to spline pad 241 of spline set 248,
Diameter due to pad spline through hole 244 is more than the diameter of spline boss 249, it is provided that a fine setting space, makes spline set 248
Spline set in the screw rod rotation prevention portion 252 of rotation prevention portion 251 and respective threaded rod 246 can be the most right, thus spline is overlapped 248 with spacing
Part is together arranged on outside the rotation prevention portion 254 of screw rod 246, and in the spline set of spline set 248, rotation prevention portion 251 is placed in the spiral shell of screw rod 246
Outside bar rotation prevention portion 252, the Elastic buckle 253 of locating part is supported towards the end face of blocking part 250 by rotation prevention portion 254 by elastic deformation
Keeping off the side axial limiting that spline set 248 deviates from attached body 242, the spline boss 249 of spline set 248 stretches into pad spline through hole
In 244, constraint spline set 248 rotates relative to pad, and plural screw rod 246 retrains spline pad 241 and rotates relative to attached body 242,
Parent 243 and attached body 242 without rotating against, therefore screw rod 246 the most non-rotatably with parent 243, attached body 242 and spline pad
241 are installed together.
Embodiment 11
As shown in figure 23, as different from Example 9, the described assembly that is fastenedly connected also includes spline pad 261.
Parent 262 is the L-shaped part of arc transition, and including line part 263, linearly one end, portion 263 is to curving 90 °
Arc sections 264, connects the line part 265 of arc sections 264 other end.Along the parent 262 multiple screw thread of distribution of shapes on parent 262
Blind hole 266.
Attached body 267 is identical with the peripheral shape of parent 262, is provided with the tapped blind hole 266 with parent 262 on attached body 267
Through hole 268 one to one.
The periphery of spline pad 261 is identical with the peripheral shape of attached body 267, and spline pad 261 is provided with and the through hole of attached body 267
268 through hole 269 one to one, be equipped with outside each through hole 269 of spline pad 261 one convex with the spline of spline set 270
The pad spline through hole 271 of platform matched in clearance.
Embodiment 12
As shown in figure 24, as different from Example 1, the periphery of spline blocking part 281 is spline shape, and periphery forms five
Protuberance, each protuberance forms a screw rod rotation prevention portion 282.
The hole wall of spline through hole 283 is the spline connected in star that the periphery with the spline-shaped of spline blocking part 281 coordinates, only
Turn the single groove on through hole 283 hole wall and form rotation prevention portion 284 in the spline set coordinated with screw rod rotation prevention portion 282.
Embodiment 13
As shown in figure 25, as different from Example 1, the periphery of spline blocking part 291 is provided with and multiple uniformly circumferentially arranges
Stepped tooth, stepped tooth forms a screw rod rotation prevention portion 292.
The hole wall of spline through hole 293 is provided with multiple dovetail groove being uniformly circumferentially distributed, on the hole wall of spline through hole 293
Single dovetail groove forms rotation prevention portion 294 in a spline set coordinated with screw rod rotation prevention portion 292.
Embodiment 14
As shown in figure 26, as different from Example 1, fastening structure includes being fastenedly connected assembly, integral structure
Parent and attached body.Parent forms the annular solid 301 of band fracture with attached body；Divide at the two ends of the fracture of described annular solid 301
Be provided with the most in the same direction just to the first installation portion 302 and the second installation portion 303.First installation portion 302 is provided with and described spiral shell
The through hole 305 that bar 304 coordinates.The second described installation portion 303 is provided with and coordinates with described screw rod 304 and pacify with first
The screwed hole 307 that through hole 305 in dress portion 302 is corresponding.The external thread part 306 of screw rod 304 passes on the first installation portion 302
Through hole 305 is threadeded with the screwed hole 307 of the second installation portion 303, and screw rod 304 is by the first installation portion 302 and the second installation portion
303 are fastened together.
Embodiment 15
As shown in Figure 27, Figure 28, as different from Example 1, it is fastenedly connected assembly and also includes locking nut 321.
The periphery of locking nut 321 include regular hexagon clamping part 322, cone blocking part 323 and be arranged on to
Axial spline boss 324 on stopper 323 end face, locking nut 321 shaft core position is provided with and the external thread part of screw rod 325
326 tapped through holes 327 coordinated.
Deviate from the side of attached body 329 at parent 328 and be provided with the circle of spline boss 324 matched in clearance with locking nut 321
Spline hole 332.
The spline boss 324 of locking nut 321 inserts in the round spline hole 332 of parent 328, and locking nut 321 can not revolve
Being arranged on parent 328 with turning, the external thread part 326 of screw rod 325 sequentially passes through on the through hole 333 on attached body 329, parent 328
Through hole 334 is threadeded with the tapped through hole 327 of locking nut 321, and the end face axial of side, spline blocking part 323 keeps out attached body
329, locking nut 321 axially keeps out parent 328, and parent 328 is fastenedly connected with attached body 329 by screw rod 325 with locking nut 321
Together.
Embodiment 16
As shown in Figure 29, Figure 30, one is fastenedly connected assembly, including screw rod 351, spline set 352.
Screw rod 351 includes the spline blocking part 354 of the external thread part 353 and external gear shape being arranged in order, and spline is kept out
Portion 354 radially protruding external thread part 353.The periphery of spline blocking part 354 is provided with multiple uniformly circumferentially arrangement, tooth tooth is connected and circle
Slipping over the lance tooth of the wedge angle rounding off (not shown) crossing (not shown), a lance tooth forms a screw rod rotation prevention portion
355.Spline blocking part 354 deviates from the end face of external thread part 353 and is provided with the interior hexagonal for mounting and dismounting screw rod 351
The screwdriver hole 356 of shape.
Spline set 352 includes ring-type spline set body 357, and the shaft core position of spline set body 357 is provided with and supports with spline
The axial spline through hole 358 that stopper 354 coordinates, the hole wall of spline through hole 358 is the external gear shape with spline blocking part 354
The hole of the internal gear shape of matched in clearance, the hole wall of spline through hole 358 is provided with multiple vee gutter uniformly circumferentially arranged, only
Turn the single vee gutter on the hole wall of through hole 358 and form rotation prevention portion in a spline set coordinated with screw rod rotation prevention portion 355
359.The spline boss 360 of an axially projecting column, supporting of spline boss 360 on an end face of spline set body 357
Gear is put in circumferential direction, is unscrewed direction towards screw rod..
Fastening structure includes above-mentioned being fastenedly connected assembly, parent 361, attached body 362.
Attached body 362 is provided with the through hole 363 that the external thread part 353 with screw rod 351 coordinates, and deviates from parent 361 at attached body 362
Side be provided with and the spline circular hole 364 of spline boss 360 matched in clearance,.
Parent 361 is provided with the tapped blind hole 365 of external thread part 353 threaded engagement with screw rod 351.
The external thread part 353 of screw rod 351 sequentially passes through the tapped blind hole 365 of the through hole 363 on attached body 362 and parent 361
Threaded, the end face axial of side, spline blocking part 354 keeps out attached body 362, and parent 361 is fastened by screw rod 351 with attached body 362
Link together.
Spline set 352 is arranged on outside the spline blocking part 354 of screw rod 351, and keeping out of spline boss 360 is located proximate to attached body
The spline circular hole 364 of 362 or contact with spline circular hole 364, the screw rod rotation prevention portion 355 of lance tooth inserts corresponding vee gutter
Spline set in rotation prevention portion 359, and the spline boss 360 of spline set 352 inserts in the spline circular hole 364 of attached body 362, at spiral shell
Being filled with fixing glue 366 between the gap of rotation prevention portion 359 in bar rotation prevention portion 355 and spline set, fixing glue 366 protrudes spline set 352
Deviating from the end face of attached body 362, the spline blocking part 354 of spline set 352 with screw rod 351 is fixed together by fixing glue 366, thus
Spline set 352 is deviated from the side axial limiting of attached body 362.Spline boss 360 is attached in the side unscrewing direction towards screw rod
The spline circular hole 364 of body 362 is kept out, screw rod 351 jointly retrains spline through the spline through hole 358 of spline set 352 to overlap 352 relative
Attached body 362 rotates, screw rod rotation prevention portion 355 and rotation prevention portion 359 fiting constraint spline set 352 relative screw rod 351 phase rotation in spline set
Turning, parent 361 and attached body 362 are without rotating against, and therefore screw rod 351 is non-rotatably arranged on one with parent 361 and attached body 362
Rise.
Embodiment 17
As shown in Figure 31, Figure 32, as different from Example 16, the hole wall of the spline through hole 382 of spline set 381 sets
There is the glue groove 383 of uniform three circular arcs of circumference, at the glue groove 383 screw rod rotation prevention portion 384 adjacent with glue groove 383 and spline set
It is filled with fixing glue 386 between 385 gaps of interior rotation prevention portion.
Embodiment 18
As shown in figure 33, as different from Example 16, the spline blocking part 392 of screw rod 391 deviates from external thread part 393
End face has chamfering, increases the bond area of fixing glue 394, thus increases the bed knife of fixing glue 394.Screwdriver hole 395 is ten
Font hole.
Embodiment 19
As shown in Figure 34 to Figure 36, as different from Example 5, it is fastenedly connected assembly and also includes spline pad 500.
External thread part 502 that screw rod 501 includes being arranged in order, polished rod portion 503, spline blocking part 504.Spline blocking part
504 radially protruding polished rod portions 503.Spline blocking part 504 is provided with the draw-in groove 506 coordinated with snap ring 505.
The shaft core position of spline pad 500 is provided with the round central through hole 507 of external thread part 502 matched in clearance with screw rod 501,
The end face of spline pad 500 is provided with the pad circle spline through hole 510 of and spline boss 509 matched in clearance of spline set 508.Circle
An axially projecting spline pad boss 511 on the peripheral end face of central through hole 507.The minimum outer diameter of spline pad 500 is more than spline
The maximum outside diameter of set 508.
Attached body 512 is provided with the through hole 513 that the external thread part 502 with screw rod 501 coordinates, and deviates from parent 514 at attached body 512
Side be provided with the spline circular hole 515 coordinated with spline pad boss 511.
The spline pad boss 511 of spline pad 500 is inserted in spline circular hole 515, and by the round central through hole of spline pad 500
507 just to the through hole 513 on attached body 512.The external thread part 502 of screw rod 501 sequentially passes through the round central through hole of spline pad 500
507, the through hole 513 on attached body 512 is threadeded with the tapped blind hole 516 of parent 514, the spline blocking part 504 1 of screw rod 501
The end face axial of side keeps out spline pad 500, and the spline pad boss 511 of spline pad 500 inserts in the spline circular hole 515 of attached body 512
Constraint spline pad 500 rotates relative to attached body 512, and parent 514, attached body 512 and spline pad 500 are fastenedly connected one by screw rod 501
Rise.
Spline set 508 is arranged on outside the spline blocking part 504 of screw rod 501, and the spline boss 509 of spline set 508 only inserts
Turn constraint spline set 508 in the pad circle spline through hole 510 of pad 500 to rotate relative to spline pad 500.
Embodiment 20
As shown in Figure 37, Figure 38, one is fastenedly connected assembly, including screw rod 661, spline set 662, spline pad 663.
Screw rod 661 includes the spline blocking part 665 of the external thread part 664 and external gear shape being arranged in order, and spline is kept out
Portion 665 radially protruding external thread part 664.The periphery of spline blocking part 665 is provided with multiple uniformly circumferentially arrangement, tooth tooth is connected and circle
Slipping over the lance tooth of the wedge angle rounding off (not shown) crossing (not shown), a lance tooth forms a screw rod rotation prevention portion
666.Spline blocking part 665 deviates from the end face of external thread part 664 and is provided with in mounting and dismounting screw rod 661 hexagonal
Screwdriver hole 667.
Spline set 662 includes ring-type spline set body 668, and the shaft core position of spline set body 668 is provided with and supports with spline
The axial spline through hole 669 that stopper 665 coordinates, an axially projecting column on an end face of spline set body 668
Spline boss 670, spline boss 670 keep out position in circumferential direction, unscrew direction towards screw rod.
.The hole wall of spline through hole 669 is the internal gear shape that the external gear shape clearance with spline blocking part 665 coordinates
Hole, is provided with the glue groove 671 of three uniform circular arcs of circumference on the hole wall of spline through hole 669, is not provided with at spline through hole 669
The hole wall of glue groove 671 is provided with multiple vee gutter uniformly circumferentially arranged, the single triangle on the hole wall of spline through hole 669
Groove forms rotation prevention portion 672 in a spline set coordinated with screw rod rotation prevention portion 666.
Spline pad 663 shaft core position is provided with the round central through hole 673 of external thread part 664 matched in clearance with screw rod 661, only
The end face turning pad 663 is provided with the pad circle spline through hole 674 of and spline boss 670 matched in clearance of spline set 662, spline
A lot of the friction projection grains 675 increasing friction it are coated with on one end face of pad 663.
Fastening structure includes above-mentioned being fastenedly connected assembly, parent 676, attached body 677.
Attached body 677 is provided with the through hole 678 that the external thread part 664 with screw rod 661 coordinates, and the hardness of attached body 677 is less than only
Turn the hardness on the friction projection grain 675 on pad 663.
Parent 676 is provided with the tapped blind hole 679 of external thread part 664 threaded engagement with screw rod 661.
The external thread part 664 of screw rod 661 sequentially passes through the through hole 678 on the central through hole 673 of spline pad 663, attached body 677
Threadeding with the tapped blind hole 679 on parent 676, during screw rod 661 screw-in, the friction projection grain 675 of spline pad 663 is embedding
Produce the biggest restrictions of the frictional force spline pad 663 with attached body 677 surface in entering attached body 677 to rotate relative to attached body 677, screw rod 661
Parent 676 is fastened together with attached body 677, spline pad 663.
Spline set 662 is arranged on outside the spline blocking part 665 of screw rod 661, is inserted by the spline boss 670 of spline set 662
In pad circle spline through hole 674, owing to the diameter of pad circle spline through hole 674 is more than the diameter of spline boss 670, it is provided that one
Individual fine setting space, in making the spline of spline set 662 overlap, rotation prevention portion 672 can be the most right with the screw rod rotation prevention portion 666 of screw rod 661, from
And spline is overlapped body 668 and is arranged on outside the spline blocking part 665 of screw rod 661, the screw rod rotation prevention portion 666 of lance tooth inserts phase
In the spline set of the vee gutter answered in rotation prevention portion 672, in the glue groove 671 screw rod rotation prevention portion 666 adjacent with glue groove 671 and spline
Being filled with fixing glue 680 between the gap of rotation prevention portion 672 in set, the spline of spline set 662 with screw rod 661 is kept out by fixing glue 680
Portion 665 is fixed together, thus spline set 662 deviates from the side axial limiting of attached body 677.Spline boss 670 is towards spiral shell
Bar unscrew the side in direction kept out by pad circle spline through hole 674, screw rod 661 common through the central through hole 673 of spline pad 663
Constraint spline set 2 rotates relative to spline pad 663 relative to spline set 662, and the friction projection grain 675 of spline pad 663 embeds in attached body 677
Constraint spline pad 663 rotates relative to attached body 677, and parent 676 and attached body 677 are without rotating against, and therefore screw rod 661 is non-rotatably
It is installed together with parent 676, attached body 677 and spline pad 663.
Embodiment 21
As shown in Figure 39, Figure 40, as different from Example 20, screw rod 691 includes external thread part 692, external gear shape
Spline blocking part 702 and with the cylindrical spacing blocking part 694 of chamfering.
Spline set 695 includes ring-type spline set body 696, and the shaft core position at spline set body 696 is provided with center and leads to
Hole 697, is uniformly distributed three on the hole wall of central through hole 697 and keeps out rotation prevention portion 698.Each keep out rotation prevention portion 698 include from
Horizontal projections 699 that the hole wall of central through hole 697 is formed radially inward, the U that axle is formed down the most again
Blocking part 701 that shape elastic arm 700, end from U-shaped elastic arm 700 are formed radially inward, in the inner side of three blocking parts 701
Face be provided with the internal gear shape that spline blocking part 702 part with screw rod 691 external gear shape coordinates multiple uniformly circumferentially
The vee gutter of arrangement, the single vee gutter formation one on the medial surface of blocking part 701 coordinates with screw rod rotation prevention portion 703
Rotation prevention portion 704 in spline set, the cell wall of the vee gutter on the medial surface of three blocking parts 701 encloses the spline forming non-closed
Through hole.Spline set 695 deviates from an axially projecting spline boss 705 on the end face of U-shaped elastic arm 700.
By in the spline boss 705 partial insertion pad circle spline through hole 706 of spline set 695, spline overlaps the U-shaped bullet of 695
Property arm 700 outer and spline set 695 the spline boss 705 in spline blocking part 702 that is placed in screw rod 691 by elastic deformation continue to insert
Entering in pad circle spline through hole 706, spline overlaps the blocking part 701 of 695 by the spacing blocking part 694 of screw rod 691 towards attached body 707
End face keep out the side axial limitings that spline set 695 is deviated from attached body 707.The spline boss 705 of spline set 695 stretches into pad
In circle spline through hole 706, constraint spline set 695 rotates relative to pad, and the friction projection grain 709 of spline pad 708 embeds in attached body 707
Constraint spline pad 708 rotates relative to attached body 707, and parent 710 and attached body 707 are without rotating against, and therefore screw rod 691 is non-rotatably
It is installed together with parent 710, attached body 707 and spline pad 708.
The present embodiment fixes spline set 695 without glue, without locating part, spline is overlapped 695 axial limitings, and by only
Blocking part 701 on pivoted housing 695 coordinates with the spacing blocking part 694 of screw rod 691, in use, can ensure that spline set 695
Will not get loose with screw rod 691, so that it is guaranteed that screw rod 691 will not get loose with parent 710, attached body 707.
Embodiment 22
As shown in figure 41, as different from Example 21, spline pad 721 be provided with five equally distributed pad splines lead to
Hole 722, each pad spline through hole 722 is separated by 15 ° of settings with the axle center of spline pad 721 for the center of circle.
The U-shaped elastic arm 724 of spline set 723 is placed in outside the spline blocking part 726 of screw rod 725 by elastic deformation, spline
The spline boss of set 723 is inserted in one of in pad spline through hole 722, and the spline boss of spline set 723 leads to pad spline
Hole 722 fiting constraint spline set 723 rotates relative to spline pad 721.It is provided with multiple pad spline through hole 722, it is simple to regulation spline
The setting angle of set 723 relative spline pads 721, when installing spline pad 721, it is easier to make the screw rod rotation prevention portion 726 of screw rod 725
The most right with rotation prevention portion 726 in the spline set of spline set 723, it is simple to spline set 723 is arranged on outside screw rod 725.
Embodiment 23
As shown in Figure 42, Figure 43, as different from Example 21, on spline set 741, described spline boss 742 is along only
Pivoted housing 741 periphery deviates from the lath-shaped raised line of U-shaped elastic arm 743 projection, and spline boss 742 overlaps the axle center of 741 towards spline
Medial surface is a spline plane.
Spline pad 745 is the square of band chamfering, four lateral surface and spline boss 742 matched in clearance, vertical for straight line
Facet, the minimum range in central through hole 747 axle center of the lateral surface of spline pad 745 to spline pad 745 is slightly smaller than spline boss
742 towards the minimum range of medial surface in the axle center of spline set 741.The U-shaped elastic arm 743 of spline set 741 passes through elastic deformation
Blocking part is made to be placed in outside the spline blocking part 746 of screw rod 748, the medial surface of the spline boss 742 of spline set 741 and spline pad
The lateral surface of 745 coordinates, and the spline boss 742 of spline set 741 is kept out constraint spline by the lateral surface of spline pad 745 and overlapped 741 phases
Spline pad 745 is rotated.
Embodiment 24
As shown in Figure 44 to Figure 46, as different from Example 21, it is fastenedly connected assembly and also includes nut spline pad 791.
Locking nut 792 is stairstepping, the clamping part 793 including regular hexagon and the end face projection from clamping part 793
Location division 794 and spline boss 795, locking nut 792 shaft core position is provided with the spiral shell that the external thread part 797 with screw rod 796 coordinates
Stricture of vagina through hole 798.Location division 794 is arranged on the shaft core position of clamping part 793, and spline boss 795 is arranged on outside location division 794
Week.
Nut spline pad 791 shaft core position is provided with the round center that location division 794 circumferential play with locking nut 792 coordinates
Through hole 799, the end face of nut spline pad 791 be provided with one flexible with the spline nut of spline boss 795 matched in clearance of nut
Hole 800.Two end faces of nut spline pad 791 are smooth face, are not provided with the friction particles for increasing friction or embedding
Protruding etc..
Screw rod 796 includes external thread part 797, polished rod portion 801, spline blocking part 802, clamping part 824 successively, and spline is kept out
Portion 802 include rotation prevention portion 803 and be connected with polished rod portion 801, the cylindrical blocking part 804 of empty avoiding, blocking part 804 radial convex
Go out polished rod portion 801, rotation prevention portion 803 radially protruding blocking part 804 and clamping part 824.
Spline set 805 includes ring-type spline set body 806, and the shaft core position at spline set body 806 is provided with center and leads to
Hole 807, the periphery along spline set body 806 extends in the same direction with inner circumferential and to be provided with mutually level outer bulge loop 808 and internal projecting ring 809,
On internal projecting ring 809, the end face along internal projecting ring 809 is radially convexly equipped with three blocking parts 810, along the week of each blocking part 810
To both sides, centered by central through hole 807 axle center, point is provided with incision internal projecting ring 809 and partial cut spline overlaps putting of body 806
Penetrating the straight line grooving 812 of shape, the internal projecting ring 809 being connected with blocking part 810 and spline set body 806 form elastic arm 811.Supporting
The medial surface of stopper 810 is provided with the internal gear shape that spline blocking part 802 part with screw rod 796 external gear shape coordinates
Multiple vee gutters uniformly circumferentially arranged, the single vee gutter on internal projecting ring 809 medial surface forms one and screw rod spline
Rotation prevention portion 814 in the spline set that portion 813 coordinates, the cell wall of the vee gutter on internal projecting ring 809 medial surface encloses formation non-closed
Spline through hole 815.At spline set body 806 towards axial between side, internal projecting ring 809 and the outer bulge loop 808 of internal projecting ring 809
Protrude a spline boss 816.
Spline pad 817 shaft core position is provided with the round central through hole 818 of external thread part 797 matched in clearance with screw rod 796, only
The end face turning pad 817 is provided with the pad circle spline through hole 819 of and spline boss 816 matched in clearance of spline set 805.Spline
Two end faces of pad 817 are smooth face, are not provided with the friction particles for increasing friction or embed projection etc..
Filling glue on an end face of nut spline pad 791, the location division 794 of locking nut 792 is from nut spline pad
791 end faces being not coated with glue stretch into the round central through hole 799 of nut spline pad 791, spline boss 795 stretches into nut spline pad
In the spline nut round tube hole 800 of 791, nut spline pad 791 is enclosed within locking nut 792.
Filling glue on an end face of spline pad 817, the external thread part 797 of screw rod 796 is not coated with glue from spline pad 817
End face sequentially pass through through hole on the round central through hole 818 of spline pad 817, attached body 820 821 and the through hole 823 on parent 822
Threaded with locking nut 792；Screw rod 796 and locking nut 792 are by nut spline pad 791, parent 822 and attached body 820, only
Turn pad 817 to be fastened together.Screw rod 796 screw in during spline pad 817 be bonded together with attached body 820 surface and
Attached body 820 surface produces the biggest bonding force constraint spline pad 817 and rotates relative to attached body 820, nut spline pad 791 and parent
The bonding force constraint relative parent 822 of nut spline pad 791 that 822 surfaces are bonded together the biggest with the generation of parent 822 surface revolves
Turning, spline boss 795 stretches into the spline nut round tube hole 800 of nut spline pad 791 and retrains locking nut 792 opposing nut spline
Pad 791 rotation, locking nut 792, nut spline pad 791, the relative parent 822 of spline pad 817 and attached body 820 are the most rotatable.
Spline set 805 is placed in rotation prevention portion 803 elastic arm 811 outer, spline set 805 of screw rod 796 and is put by elastic deformation
In the polished rod portion 801 of screw rod 796, outer and spline set 805 spline boss 816 inserts the pad circle spline through hole of spline pad 817
In 815, the blocking part 810 of spline set 805 is kept out spline set towards the end face of attached body 820 by the rotation prevention portion 803 of screw rod 796
The 805 side axial limitings deviating from attached body 820.
Embodiment 25
As shown in figure 47, as different from Example 24, spline pad 1050 is the rectangle of external arc for both sides.Nut is only
The periphery turning pad 1051 includes connecting about two arc surfaces 1052 substantially symmetrical about its central axis, connects the two parallel planes of two arc surfaces
1053。
Embodiment 26
As shown in Figure 48 to Figure 50, as different from Example 9, along uniform three sides of circumference, periphery of spline through hole 1061
The empty avoiding through hole 1062 of shape, is provided with three holding tanks 1064 in the periphery of spline set 1063.Spline through hole 1061 is interior for Guan Bi
Gear shape hole.
Locating part 1065 includes circular locating part body 1066, in the center of locating part body 1066 is provided with
Heart through hole 1067, the minimum-value aperture of central through hole 1067 is more than the maximum diameter of hole of spline through hole 1061.At central through hole 1067
Hole wall uniform three grooves 1068 of circumference, the end face of vertical locating part body 1066, corresponding each equal homonymy of groove 1068 are provided with
The first elastic arm 1069 flushed with the bottom surface of each groove 1068, along the first elastic arm 1069 end to central through hole 1067
The arc elastic arm 1070 of axle center circular arc bending, arcuately the end of elastic arm 1070 forms the second elastic arm the most vertically downward
1071, form limiting section 1073 in the end of the second elastic arm 1071 to central through hole 1067 axle center horizontal buckling.First is elastic
Arm the 1069, second elastic arm 1071 is symmetrical about the axial line of arc elastic arm 1070.First elastic arm 1069, arc elastic arm
1070, the second elastic arm 1071 forms U-shaped elastic arm 1072.Limiting section 1073 and locating part body 1066 are at same plane.Limit
The external diameter of position part body 1066 is less than the external diameter of spline set 1063.U-shaped elastic arm 1072 coordinates with empty avoiding through hole 1062.
Spline through hole 1061 axis of spline set 1063 is closed with the axial location of the central through hole 1067 of locating part 1065
System's correspondence, three U-shaped elastic arms 1072 on locating part 1065 are separately mounted to three empty avoiding through holes on spline set 1063
In 1062, the end face of locating part body 1066 is together with the end face butt-joint of spline set 1063.The limiting section of locating part 1065
The spline through hole 1061 of 1073 radially protruding spline sets 1063.First elastic arm 1069 and the second elastic arm of locating part 1065
Distance between 1071 protrudes the hole wall of the spline through hole 1061 of spline set 1063 more than the limiting section 1073 of locating part 1065
Length, to provide deformation space.
Spline set 1063 is together arranged on outside the rotation prevention portion 1075 of screw rod 1074 with locating part 1065, and spline set 1063
Spline boss (not shown) inserts the spline circular hole (not shown) of attached body 1077, and the U-shaped elastic arm 1072 of locating part 1065 passes through
In elastic deformation makes limiting section 1073 insert limiting section 1073 accommodation space that rotation prevention portion 1075 and blocking part 1076 are formed and quilt
The side axial limiting of attached body 1077 is kept out, deviated from spline set 1063 to rotation prevention portion 1075 towards the end face of blocking part 1076.
Embodiment 27
As shown in Figure 51 to Figure 53, as different from Example 26, locating part includes the elastic spacing that three structures are identical
Part 1091.Elastic spacing one 1091 is bent by the sheet metal of strip and forms.Elastic spacing one 1091 includes the limiting section of level
1092, vertical limiting section 1092 bending the first elastic arm 1093, along the first elastic arm 1093 end to limiting section 1092
Direction horizontal buckling, again deviate from limiting section 1092 direction bend the most obliquely, again arc transition bend the most obliquely, court again
To the buckle 1094 of limiting section 1092 direction horizontal buckling, then second bent downwards along buckle 1094 end vertical
Elastic arm 1095, then the blocking part of limiting section 1092 direction horizontal buckling is deviated from along the end of the second elastic arm 1095
1096, blocking part 1096 and limiting section 1092 are positioned at approximately the same plane.The two horizontal parts 1097 of buckle 1094 is positioned at same flat
Face.Distance between limiting section 1092 and the horizontal part 1097 of corresponding buckle 1094 is slightly larger than the thickness of spline set 1098.
The limiting section 1092 of elastic spacing one 1091 is overlapped the axle center of 1098 and by buckle 1094 through spline towards spline
Elastic spacing one 1091 is installed together by the empty avoiding through hole 1099 on set 1098 with spline set 1098, elastic spacing one 1091
The hole wall of spline through hole of limiting section 1092 radially protruding spline set 1098, between two elastic arms of elastic spacing one 1091 away from
From the length of the hole wall of the spline through hole protruding spline set 1098 more than the limiting section 1092 of elastic spacing one 1091, to provide change
Shape space.In the same way two other elastic spacing one 1091 is installed together with spline set 1098.
Spline set 1098 and three elastic spacing ones 1091 being installed together together are arranged on the rotation prevention portion of screw rod 1100
Outside 1101, and in the spline circular hole (not shown) of the spline boss (not shown) attached body 1102 of insertion of spline set 1098, elastic limit
Buckle 1094 and first elastic arm 1093 of position part 1091 make limiting section 1092 insert rotation prevention portion 1101 and support by elastic deformation
Keep out towards the end face of blocking part 1103 in limiting section 1092 accommodation space that stopper 1103 is formed and by rotation prevention portion 1101, right
Spline set 1098 deviates from the side axial limiting of attached body 1102.
Embodiment 28
As shown in Figure 54, as different from Example 27, the blocking part 1242 at each elastic spacing one 1241 deviates from card
The side of button 1243 is provided with padded protruding the 1244 of more than three, and limiting section 1245 and blocking part 1242 are in approximately the same plane.
Padded protruding 1244 make limiting section 1245 and attached body (not shown) and spline set (not shown) matched in clearance, by spacing for spline group
During part is arranged on the spline blocking part 1242 of screw rod (not shown), the first elastic arm 1246 and the elastic change of buckle 1243
During shape, it is simple to limiting section 1245 moves between spline set and attached body.
Distance between buckle 1243 and blocking part 1242 is equal to the thickness of spline set, from the top of buckle 1243 to limit
The both sides, direction of position part progressively reduce, the elastic spacing one 1241 of this structure, the empty avoiding that the second elastic arm 1247 overlaps with spline
Through hole tight fit, when buckle 1243 and the first elastic arm 1246 do not have elastic deformation, elastic spacing one 1241 will not stop relatively
Pivoted housing is subjected to displacement, and in the environment of fastening structure is in strenuous vibration, can be substantially reduced noise, and it is spacing to be easy to spline
Assembly is arranged on outside the spline blocking part 1242 of screw rod；First elastic arm 1246 coordinates with empty avoiding via clearance, spline is being limited
During hyte part is arranged on screw rod, when the first elastic arm 1246 and buckle 1243 elastic deformation, the first elastic arm 1246 can
In empty avoiding through hole, free motion, makes limiting section 1245 be more easy to stretch in limiting section accommodation space.
Embodiment 29
As shown in fig. 55, as different from Example 26, from the top of arc elastic arm 1261 to the direction of locating part
Both sides progressively reduce, the locating part of this structure, half arc bullet that the first elastic arm 1262 connects with the first elastic arm 1262
Property arm 1261 and spline set (not shown) empty avoiding through hole (not shown) tight fit, half arc connected with the second elastic arm 1263
Shape elastic arm the 1261, second elastic arm 1263 coordinates with empty avoiding via clearance, so elastic at arc elastic arm 1261 and second
When arm 1263 does not has elastic deformation, locating part will not be subjected to displacement by spline set relatively, is in strenuous vibration at fastening structure
In the environment of, can be substantially reduced noise, and be easy to spline limit assembly and be arranged on the spline blocking part of screw rod (not shown) and (do not show
Go out) outward；During spline limit assembly is arranged on screw rod, arc elastic arm 1261 and the elastic change of the second elastic arm 1263
During shape, half arc elastic arm 1261 and the second elastic arm 1263 elasticity can be freely-movable in empty avoiding through hole, make limiting section more
Easily stretch in limiting section accommodation space.
Embodiment 30
As shown in Figure 56, Figure 57, crankshaft connecting rod system includes being fastenedly connected assembly, bent axle 1281, connection rod set.
It is fastenedly connected assembly and the most also includes the locking nut 1282 of outer regular hexagon.
Connection rod set includes gonnecting rod body 1283, connecting rod cap 1284, big end bearing shell 1285.Gonnecting rod body 1283 includes even
Bar major part 1286 and small end of connecting rod 1287.Big end 1286 is provided with the through hole that the external thread part 1289 with screw rod 1288 coordinates
1290, connecting rod cap 1284 is provided with the through hole 1291 that the external thread part 1289 with screw rod 1288 coordinates.At big end
1286 sides deviating from connecting rod cap 1284 are only provided with the circular major part coordinated with the spline boss 1293 of spline set 1292
Turn hole 1294.
Big end bearing shell 1285 is filled the span of a man's arms outside bent axle 1281, and big end 1286 and connecting rod cap 1284 are filled the span of a man's arms even
Outside bar major part bearing shell 1285；It is big that the external thread part 1289 of screw rod 1288 sequentially passes through the through hole 1290 of big end 1286, connecting rod
Through hole 1291 on skull 1284 with locking nut 1282 threaded, a plane of the periphery of locking nut 1282 is connected
One sidewall of the big skull of bar 1284 is kept out constraint locking nut 1282 and is rotated relative to connecting rod cap 1284, screw rod 1288 and locking
Big end 1286 and connecting rod cap 1284 are fastened together by nut 1282.
Spline set 1292 is arranged on outside the spline blocking part 1295 of screw rod 1288, the spline boss 1293 of spline set 1292
Keep out be located proximate to or contact with major part spline hole 1294, spline set 1292 spline boss 1293 insert major part spline hole 1294
In, keep out nut 1296 and be arranged on the external thread part 1289 of screw rod 1288, keep out nut 1296 and spline set 1292 is deviated from even
The side axial limiting of bar major part 1286.Spline is overlapped 1292 spline boss 1293 and is unscrewed direction by major part spline at screw rod 1288
Hole 1294 is kept out constraint spline set 1292 and is rotated relative to big end 1286, screw rod rotation prevention portion 1297 and rotation prevention portion in spline set
1298 fiting constraint spline sets 1292 rotate relative to screw rod 1288 phase, and connecting rod cap 1284 revolves without relative with big end 1286
Turning, therefore screw rod 1288 is non-rotatably installed together with connecting rod cap 1284 and big end 1286.
For the present invention, spline that spline puts set spline boss can be two or more, attached body is provided with and
The attached body spline hole that spline set spline boss coordinates one by one；Attached body spline hole may also be the integral multiple of spline set spline boss；Root
According to embodiments of the invention, those skilled in the art is not required to any creative work and achieves that, therefore no longer by concrete reality
The mode of executing illustrates.
Claims (21)
1. a fastening structure, including being fastenedly connected assembly, parent, attached body；It is fastenedly connected assembly and includes screw rod；Screw rod bag
Include external thread part, spline blocking part, spline blocking part radially protruding external thread part；The external thread part that attached body is provided with screw rod is joined
The through hole closed, parent is provided with the hole that the external thread part with screw rod coordinates；Screw rod passes the Kong An of the through hole on attached body and parent
It is fitted together；
It is characterized in that: be fastenedly connected assembly and also include spline set；
The periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
Being provided only with an axial spline through hole on spline set, the hole wall of spline through hole is provided with and coordinates with screw rod rotation prevention portion
Rotation prevention portion in spline set；An end face of spline set is axially convexly equipped with constraint spline set towards screw rod unscrew that direction rotates only
Pivoted housing spline boss, spline set spline boss keep out position in circumferential direction, unscrew direction towards screw rod；
The side deviating from parent on attached body is provided with and the attached body spline hole of spline set spline boss matched in clearance；
Spline set is arranged on outside the spline blocking part of screw rod, and spline set spline boss inserts in attached body spline hole, and spline set quilt
Axial limiting is outside the spline blocking part of screw rod；Screw rod rotation prevention portion rotation prevention portion fiting constraint screw rod interior with spline set is relative to spline set
Rotating, spline set spline boss is kept out constraint spline in the side unscrewing direction towards screw rod by attached body spline hole and is overlapped the most attached body
Rotate；
Screw rod is non-rotatably installed together with parent, attached body.
2. a fastening structure, including being fastenedly connected assembly, parent, attached body；It is fastenedly connected assembly and includes screw rod；Screw rod bag
Include external thread part, spline blocking part, spline blocking part radially protruding external thread part；The external thread part that attached body is provided with screw rod is joined
The through hole closed, parent is provided with the hole that the external thread part with screw rod coordinates；
It is characterized in that: be fastenedly connected assembly and also include spline set, spline pad；
The periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
Being provided only with an axial spline through hole on spline set, the hole wall of spline through hole is provided with and coordinates with screw rod rotation prevention portion
Rotation prevention portion in spline set；An end face of spline set is axially convexly equipped with constraint spline set towards screw rod unscrew that direction rotates only
Pivoted housing spline boss, spline set spline boss keep out position in circumferential direction, unscrew direction towards screw rod；
Spline pad is provided with through hole and the spline pad of spline set spline boss matched in clearance that the external thread part with screw rod coordinates
Spline hole；On the end face of attached body, it is convexly equipped with spline pad spline boss at spline pad；
The height of spline set spline boss, less than or equal to the thickness of spline pad, is provided with on attached body and joins with spline pad spline boss
The attached body spline hole closed；
Screw rod is installed together through the hole of the through hole on the through hole of spline pad, attached body with parent；
Spline pad spline boss retrains spline pad in inserting attached body spline hole and rotates relative to attached body；
Spline set is arranged on outside the spline blocking part of screw rod, and spline set spline boss inserts in spline pad spline hole, and spline set
By axial limiting outside the spline blocking part of screw rod；Screw rod rotation prevention portion rotation prevention portion fiting constraint screw rod interior with spline set is relative to spline
Set rotates, and spline set spline boss is kept out constraint spline set relatively in the side unscrewing direction towards screw rod by spline pad spline hole
Spline pad rotates；
Screw rod is non-rotatably installed together with parent, attached body, spline pad.
3. a spline structure, it is characterised in that: spline structure includes spline set, and spline set, for ring-type, only sets on spline set
There is an axial spline through hole, the hole wall of spline through hole is provided with rotation prevention portion in the spline set that circumference is evenly distributed, axial；
Spline set an end face on be axially convexly equipped with coordinates with attached body spline hole and/or spline pad spline hole, retrain spline overlap court
Screw rod unscrews the spline set spline boss that direction rotates, spline set spline boss keep out position in circumferential direction, towards screw rod
Unscrew direction.
4. a kind of spline structure as claimed in claim 3, it is characterised in that: the height of spline set spline boss is more than spline set
The axial length of interior rotation prevention portion.
5. a kind of spline structure as claimed in claim 3, it is characterised in that: also include spline pad；Spline pad is provided with
The through hole of the external thread part cooperation of screw rod and the spline pad spline hole of spline set spline boss matched in clearance；Spline pad towards
On the end face of attached body, axially it is convexly equipped with the spline pad spline boss coordinated with attached body spline hole；The height of spline set spline boss
Thickness less than or equal to spline pad.
6. a kind of spline structure as claimed in claim 3, it is characterised in that: also include spline pad；Spline pad is provided with
The through hole of the external thread part cooperation of screw rod and the spline pad spline hole of spline set spline boss matched in clearance；Spline acting as a cushion from
The side of spline set is provided with Embedded Division or is coated with friction particles；Described Embedded Division is be arranged on the end face of spline pad embedding
Enter projection or for be arranged on the built-in edges outside spline pad；The height of spline set spline boss is less than or equal to the thickness of spline pad
Degree.
7. a kind of spline structure as claimed in claim 3, it is characterised in that: described spline set includes ring-type spline set originally
Body, the shaft core position at spline set body is provided with central through hole, is axially convexly equipped with plural bullet from spline set body homonymy
Property arm, the end of elastic arm be formed radially inward limiting section, the medial surface of limiting section is provided with spline in described spline set
Portion, limiting section is provided with the spline through hole of the medial surface formation non-closed of the interior rotation prevention portion of spline set；Spline set spline boss is with spacing
Portion's homonymy.
8. a kind of spline structure as claimed in claim 3, it is characterised in that: described spline set also includes elastic arm；Only
Pivoted housing is provided with to connect with spline through hole and coordinates with elastic arm, for housing elastic arm and providing deformation sky for elastic arm deformation
Between avoiding hollow groove, the described hole that spline through hole is non-closed；One end of elastic arm and spline set deviate from spline set spline boss
Side be connected, the other end is arranged with the side of spline set spline boss and in the end of this end radially to spline towards spline
The axle center of through hole is provided with limiting section, and limiting section is vertical with the axis of spline through hole, limiting section radially protruding spline through hole；Described
Elastic arm is the most right with described avoiding hollow groove.
9. a kind of spline structure as claimed in claim 3, it is characterised in that: also include locating part, a spline set corresponding
Individual locating part；
Locating part includes ring-type locating part body, is provided only with a central through hole, center in the center of locating part body
The minimum-value aperture of through hole is more than the maximum diameter of hole of spline through hole；Also include the plural elasticity being connected with locating part body
Arm, is provided with the limiting section parallel with locating part body, limiting section radially protruding in elastic arm end to central through hole axis direction
Central through hole；The minimum diameter of plural limiting section is less than the minimum diameter of spline through hole；
Spline set is provided with and coordinates with elastic arm, for housing elastic arm and providing the empty avoiding of deformation space for elastic arm deformation
Space；
Locating part is installed together with spline set, the empty avoiding interference fit that elastic arm overlaps with spline；The limiting section footpath of locating part
To the spline through hole protruding spline set；In the direction parallel with locating part body, the maximum deflection of elastic arm is more than locating part
Limiting section protrude the length of hole wall of spline through hole of spline set.
10. a kind of spline structure as claimed in claim 9, it is characterised in that: the limiting section of locating part all protrudes locating part originally
Body, locating part body is arranged on an end face of spline set, and elastic arm axially stretches in empty avoiding space, and limiting section is radially into
In spline through hole.
11. a kind of spline structures as claimed in claim 9, it is characterised in that: in the hole of the central through hole of described locating part
Wall is provided with plural groove；Described elastic arm includes the first elastic arm being connected with locating part body, along the first bullet
The curved spring arm that property arm end bends to the axle center of central through hole, the end along curved spring arm formed the most vertically downward
Two elastic arms, described limiting section is arranged on the end of the second elastic arm；First elastic arm, curved spring arm, the second elastic arm
Forming U-shaped elastic arm, U-shaped elastic arm is just to groove.
12. a kind of spline structures as claimed in claim 3, it is characterised in that: also include locating part；Described locating part includes
Plural elastic spacing one；Described elastic spacing one includes the limiting section of level, the of vertical limiting section bending
One elastic arm, bend along the first elastic arm end to limiting section direction and parallel limiting section, to deviate from limiting section direction more oblique
It is folded upward at, reversely bends obliquely again, is re-directed towards limiting section direction and the buckle of parallel limiting section bending, then along buckle
The second elastic arm that end bends downwards, the more parallel limiting section bending of limiting section direction is deviated from along the end of the second elastic arm
Blocking part；
Spline set is provided with and coordinates with elastic arm, for housing elastic arm and providing the empty avoiding of deformation space for elastic arm deformation
Hole；
The axle center that the limiting section of elastic spacing one is overlapped towards spline the empty avoiding through hole that Elastic buckle is put through spline,
Be snapped by elastic spacing one side keep out, side is kept out by blocking part and is installed together with locating part by elastic spacing one,
The hole wall of spline through hole of the limiting section radially protruding spline set of elastic spacing one, between two elastic arms of elastic spacing one away from
Length from the hole wall of the spline through hole protruding spline set more than the limiting section of elastic spacing one.
13. 1 kinds of spline structures comprised as described in claim 3 to 6 any one claim be fastenedly connected assembly, also
Including screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding external thread part；It is characterized in that: spiral shell
The periphery of the spline blocking part of bar is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
Spline set is arranged on outside the spline blocking part of screw rod；Screw rod rotation prevention portion is relative with rotation prevention portion fiting constraint screw rod in spline set
Spline set rotates.
14. one as claimed in claim 13 are fastenedly connected assembly, it is characterised in that: the described assembly that is fastenedly connected also includes
Locating part；Screw rod is provided with draw-in groove；Described locating part is snap ring, and described snap ring includes the ring-type snap ring of non-closed originally
Body, is provided with the spacing raised line of more than three radially protruding snap ring bodies in the periphery of snap ring body；The inner circumferential of snap ring body and spiral shell
The periphery of the card trench bottom of bar coordinates；The external diameter of spacing raised line is more than the maximum diameter of hole of the spline through hole of spline set；Snap ring is installed
In draw-in groove, spline set is deviated from the side axial limiting of screw rod spline protuberance.
15. one as claimed in claim 13 are fastenedly connected assembly, it is characterised in that: the described assembly that is fastenedly connected also includes
Locating part；Screw rod is provided with draw-in groove；Described snap ring by coil spring bending form, including with spline set deviate from spline set spline convex
The ring-type limiting section of the non-closed that the end face of platform coordinates, by the two ends of ring-type limiting section to two connecting portions of equidirectional bending, point
Two blocking parts not bent towards ring-type limiting section direction by one end parallel annular limiting section of two connecting portions, between two blocking parts
Distance is more than or equal to the footpath, the end of draw-in groove, less than the maximum outside diameter of draw-in groove；It is interior to spline that two blocking parts of snap ring are arranged on draw-in groove
Set deviates from the side axial limiting of screw rod spline protuberance.
16. 1 kinds of spline structures comprised as described in claim 3 to 12 any one claim be fastenedly connected assembly, also
Including screw rod, locking nut；Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding external thread part；It is special
Levy and be: the periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
An end face of locking nut is axially convexly equipped with for retraining the spline boss that locking nut rotates relative to parent；
The external thread part of screw rod is threadeded with locking nut, and spline set is arranged on outside the spline blocking part of screw rod；Screw rod spline
Portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set.
17. 1 kinds of spline structures comprised as described in claim 7 to 12 any one claim be fastenedly connected assembly, also
Including screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding external thread part；It is characterized in that: spiral shell
The periphery of the spline blocking part of bar is provided with the limiting section appearance that evenly distributed, the axial screw rod rotation prevention portion of circumference coordinates with limiting section
Between being empty, it is to keep out face for keep out limiting section towards the face of external thread part at limiting section accommodation space；
Spline set is arranged on outside the spline blocking part of screw rod, and elastic arm makes limiting section insert the accommodating sky of limiting section by elastic deformation
The side axial limiting of external thread part is kept out, is deviated from spline set in interior and limited portion accommodation space the face of keeping out；Screw rod is only
Transfer part rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set.
18. 1 kinds of spline structures included as described in claim 3,4,7 to 12 any one claim be fastenedly connected knot
Structure, it is characterised in that: also include parent, attached body, include described spline structure be fastenedly connected assembly；Described is fastenedly connected
Assembly also includes screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part radially protruding external thread part；On attached body
Being provided with the through hole that the external thread part with screw rod coordinates, parent is provided with the hole that the external thread part with screw rod coordinates；
It is fastenedly connected assembly and also includes spline pad；Spline pad is provided with through hole and spline that the external thread part with screw rod coordinates
The spline pad spline hole of set spline boss matched in clearance；The height of spline set spline boss is less than or equal to the thickness of spline pad；
Screw rod is installed together through the hole of the through hole on the through hole of spline pad, attached body with parent；
Being provided with Embedded Division in spline acting as a cushion from the side of spline set, the hardness of attached body is less than the hardness of the Embedded Division of spline pad, only
The Embedded Division attached internal constraint spline pad of embedding turning pad rotates relative to attached body；Or be coated with from the side of spline set in spline acting as a cushion
Friction particles, produces sufficiently large restrictions of the frictional force spline pad and rotates relative to attached body between the friction particles of spline pad with attached body；Or
Spline pad is fixed on attached body constraint spline pad by fixing glue and rotates relative to attached body；Spline set is arranged on the spline of screw rod and keeps out
Outside portion, spline set spline boss inserts in spline pad spline hole, and spline set by axial limiting outside the spline blocking part of screw rod；
Screw rod rotation prevention portion rotates relative to spline set with rotation prevention portion fiting constraint screw rod in spline set, and spline set spline boss is towards screw rod
Unscrew the side in direction to be kept out constraint spline set by spline pad spline hole and rotate relative to spline pad；
Screw rod is non-rotatably installed together with parent, attached body, spline pad.
19. a kind of fastening structures as claimed in claim 18, it is characterised in that: also include locking nut；At locking screw
Axially it is convexly equipped with for retraining the spline boss that locking nut rotates relative to parent on a female end face；Described spline pad is also
Including nut spline pad, the spline pad spline hole on described nut spline pad coordinates with the spline boss of locking nut；Parent
The upper hole coordinated with the external thread part of screw rod is through hole, and screw rod passes on the through hole on spline pad, through hole on attached body, parent
Through hole, the through hole of nut spline pad are connected with locking nut；
Being provided with Embedded Division at nut spline pad towards the side of parent, the hardness of parent is hard less than the Embedded Division of nut spline pad
Degree, in the Embedded Division of nut spline pad embeds parent, constraint nut spline pad rotates relative to parent；Or nut spline pad towards
The side of parent is coated with friction particles, produces sufficiently large restrictions of the frictional force spiral shell between the friction particles of nut spline pad and parent
Female spline pad rotates relative to parent；Or nut spline pad is fixed on parent constraint nut spline pad relative to parent by fixing glue
Rotate；
Locking nut opposing nut spline is retrained in the spline pad spline hole of the spline boss insertion nut spline pad of locking nut
Pad rotates；
Locking nut is non-rotatably installed together with parent.
20. 1 kinds of spline structures included as described in claim 3,4,7 to 12 any one claim be fastenedly connected knot
Structure, it is characterised in that: also include parent, attached body, include described spline structure be fastenedly connected assembly；
The described assembly that is fastenedly connected also includes screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part radial convex
External threads portion；
Described parent and attached body are integral type structure, form the annular solid of band fracture；At the fracture of described annular solid two
End is provided with the first relative installation portion and the second installation portion the most in the same direction；
First installation portion is provided with the through hole that the external thread part with described screw rod coordinates, the second described installation portion sets
Have and coordinate with described screw rod and the hole corresponding with the through hole on the first installation portion；The external thread part of screw rod is through the first peace
Through hole and the hole of the second installation portion in dress portion are installed together；
The side deviating from the second installation portion on first installation portion is provided with and the first installation portion of spline set spline boss matched in clearance
Spline hole；
Spline set is arranged on outside the spline blocking part of screw rod, and spline set spline boss inserts in the first installation portion spline hole, and only
Pivoted housing by axial limiting outside the spline blocking part of screw rod；Screw rod rotation prevention portion is relative with rotation prevention portion fiting constraint screw rod in spline set
Spline set rotates, and spline set spline boss is only kept out constraint in the side unscrewing direction towards screw rod by the first installation portion spline hole
Pivoted housing rotates relative to the first installation portion；
Screw rod is non-rotatably installed together with the second installation portion, the first installation portion.
21. 1 kinds of crankshaft connecting rod systems, including bent axle, connection rod set, are fastenedly connected assembly；Connection rod set includes that gonnecting rod body, connecting rod are big
Skull, big end bearing shell；It is fastenedly connected assembly and includes screw rod；Screw rod includes external thread part, spline blocking part, spline blocking part
Radially protruding external thread part；Gonnecting rod body includes big end and small end of connecting rod, and big end is provided with the external thread part with screw rod
The through hole coordinated；Big end lid is provided with the hole that the external thread part with screw rod coordinates；
It is characterized in that: be fastenedly connected assembly and also include spline set, locating part；
The periphery of the spline blocking part of screw rod is provided with the screw rod rotation prevention portion that circumference is evenly distributed, axial；
Being provided only with an axial spline through hole on spline set, the hole wall of spline through hole is provided with and coordinates with screw rod rotation prevention portion
Rotation prevention portion in spline set；An end face of spline set is axially convexly equipped with constraint spline set towards screw rod unscrew that direction rotates only
Pivoted housing spline boss, spline set spline boss keep out position in circumferential direction, unscrew direction towards screw rod；
The side deviating from connecting rod cap at big end is provided with and the major part spline hole that only protuberance coordinates of spline set；
Big end bearing shell is filled the span of a man's arms outside bent axle, and big end and connecting rod cap are filled the span of a man's arms outside big end bearing shell；Screw rod
External thread part sequentially passes through the through hole of big end and is installed together with the hole on big end lid；
Spline set is arranged on outside the spline blocking part of screw rod, and spline set spline boss inserts in major part spline hole, and locating part is installed
Spline set is deviated from the side axial limiting of screw rod major part by screw rod；Screw rod rotation prevention portion and rotation prevention portion fiting constraint in spline set
Spline set rotates mutually relative to screw rod, and spline set spline boss is kept out constraint spline set in the direction that unscrews of screw rod by major part spline hole
Rotate relative to big end, connecting rod cap and big end without rotating against, screw rod non-rotatably with connecting rod cap and
Big end is installed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773285.1A CN106246690A (en) | 2016-08-31 | 2016-08-31 | A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773285.1A CN106246690A (en) | 2016-08-31 | 2016-08-31 | A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system |
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| Publication Number | Publication Date |
|---|---|
| CN106246690A true CN106246690A (en) | 2016-12-21 |
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ID=58080689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610773285.1A Pending CN106246690A (en) | 2016-08-31 | 2016-08-31 | A kind of fastening structure, spline structure, it is fastenedly connected assembly, crankshaft connecting rod system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246690A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237539A (en) * | 2020-01-20 | 2020-06-05 | 重庆川仪调节阀有限公司 | Valve rod and valve plug connecting structure and assembling method |
| CN115126763A (en) * | 2021-03-25 | 2022-09-30 | 广东东箭汽车科技股份有限公司 | Gasket |
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| CN111237539A (en) * | 2020-01-20 | 2020-06-05 | 重庆川仪调节阀有限公司 | Valve rod and valve plug connecting structure and assembling method |
| CN115126763A (en) * | 2021-03-25 | 2022-09-30 | 广东东箭汽车科技股份有限公司 | Gasket |
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