CN102943875B - The dual control Aeroassisted shift handle of cam-deflection - Google Patents
The dual control Aeroassisted shift handle of cam-deflection Download PDFInfo
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- CN102943875B CN102943875B CN201210430884.5A CN201210430884A CN102943875B CN 102943875 B CN102943875 B CN 102943875B CN 201210430884 A CN201210430884 A CN 201210430884A CN 102943875 B CN102943875 B CN 102943875B
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Abstract
The invention provides a kind of dual control Aeroassisted shift handle of cam-deflection, comprise a shell, one valve body, working hole spool combination before one, control knob before one, side working hole spool combination, side control knob, enter air outlet structure and dual control gas circuit structure, shell offers a groove, valve body is in a groove sheathed, front working hole spool combination and the combination of side working hole spool are arranged in valve body, front working hole spool combination comprises: working hole valve core housing before, working hole spool before one, working hole valve core reseting spring before one, before one, working hole glue blocks up, before one, working hole glue blocks up Returnning spring and a ball bearing, ball bearing is connected with front control knob, front control knob comprises: a press part, one cam arc portion, one cam flat portion, one supporting portion.The invention provides a kind of simple and compact for structure, the auxiliary gear shifting device of processing ease, make the sealability of auxiliary shift handle better, longer service life.
Description
Technical field
The present invention relates to a kind of auxiliary gear shifting device, be specifically related to a kind of dual control Aeroassisted shift handle device of vehicle cam-deflection.
Background technique
Within 2009, after the severe winter spending the crisis of Global finance tsunami, European & American Market enters the demand decline phase, and China Auto Market scale enters swift and violent high-speed development period, and volume of production and marketing leaps to the first in the world, and heavily card volume of production and marketing expands rapidly.According to latest data display, 2010 heavily card product break through 1,000,000.Although China's economy suffers the enormous impact of financial crisis; but along with the enforcement of the national 4 trillion yuan policies of expanding domestic demand and the developing in overseas developing country market; along with going into operation successively of highway in China, railway and other infrastructure project; especially a series of promotion automobile consumptions of putting into effect successively of 2009-2010 China as automobile go to the countryside, the relevant policies of subsidy policy of exchanging old for new and car exportation, truck company had become the industry taking the lead in being benefited already.Heavily the card product whole industry is raised the price simultaneously, estimates that the level of profitability of heavily card industry is by with the speed increment faster than sales volume.Along with the enforcement of highway and railway construction, modern logistics industry and energy-saving and emission-reduction engineering and people's livelihood engineering puts in place, will for being tightly that the heavily card industry of the development of the national economy brings new opportunity to develop.
Along with highway in China carrier management constantly standardization, it is efficient, the epoch of lean running arrive, this require industry will by Lifting Convey efficiency, reduce vehicle body deadweight, and the measure such as fuel consumption level reducing the unit volume of goods transported realizes the higher level of profitability.And highway freight user requires that heavy jig is for high-speed overload, lightweight, the attribute such as fuel economy is good, the rate of attendance is high, product demand shifts to high-endization gradually.Estimate, the heavily card product of lift-launch high-power, more gear gearboxes more and more will become main flow, and as 16 gears, 20 gears, 24 shift transmissions, just based under such environment, the preselector valve of exploitation double control becomes necessity.Prior art auxiliary gear shifting device uses slide board type design, have that operation resistance is not easy greatly gearshift, frequent sliding friction easily causes component as the loss of seal ring, cause the defect such as easy gas leakage, rate of fault height, reduce working life, further, direct in design excessive gas is discharged in operator cabin by the exhaust port that arranges on shift handle, easily causes noise, pollution to operator cabin, take for air valve to people operationally to leak gas, form uncomfortable working environment.Therefore, there are some technical problems anxious to be resolved in the auxiliary gear shifting device of prior art.
Summary of the invention
For above-mentioned defect, the object of this invention is to provide a kind of cam-deflection mechanism and conveying mechanism to improve the sealability of air valve and to use feel and improve working life of product, reduce rate of fault, to solve the technical problem of the auxiliary gear shifting device of prior art.
For achieving the above object, present invention employs following technological scheme:
A kind of dual control Aeroassisted shift handle of cam-deflection, comprise a shell, one valve body, working hole spool combination before one, control knob before one, side working hole spool combination, side control knob, enter air outlet structure and dual control gas circuit structure, described shell offers a groove, described valve body is set in described groove, described valve body offers two spool work in combination holes and be respectively front valve core work in combination hole and side valve core work in combination hole, described front working hole spool combination is arranged in described front valve core work in combination hole, and working hole spool combination in described side is arranged in described side valve core work in combination hole, described front control knob is connected with described valve body by fixing pin, described front working hole spool combination comprises:
Working hole valve core housing before one, described front working hole valve core housing is a 3 stops cylindrical body, and described front working hole valve core housing is arranged in described front valve core work in combination hole;
Working hole spool before one, described front working hole spool is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, the cylindrical body that diameter is less is valve core rod portion, described front working hole spool is plugged in described front working hole valve core housing, and the spool guide portion of described front working hole spool is provided with front working hole seal ring;
Working hole valve core reseting spring before one, described front working hole valve core reseting spring is plugged in described front working hole valve core housing, one end of described front working hole valve core reseting spring is connected with described front working hole valve core housing, and the other end of described front working hole valve core reseting spring is connected with the spool guide portion of described front working hole spool;
Before one, working hole glue blocks up, and it is a circular colloid that described front working hole glue blocks up, and described front working hole glue is stifled to be placed in described front working hole valve core housing, and one end that described front working hole glue blocks up is flexibly connected with described front working hole valve core housing;
Before one, working hole glue blocks up Returnning spring, described front working hole glue blocks up Returnning spring and is plugged in described front working hole valve core housing, one end that described front working hole glue blocks up Returnning spring is connected with the other end that described front working hole glue blocks up, and the other end that described front working hole glue blocks up Returnning spring is connected with described front working hole valve core housing;
One ball bearing, described ball bearing is arranged on one end of the spool guide portion of described front working hole spool, and described ball bearing is connected with described front control knob,
And wherein, two air cavitys are formed between described front working hole spool and front working hole valve core housing, air cavity Q and air cavity R respectively, simultaneously, the position at Returnning spring place is blocked up at described front working hole glue, form air cavity P between the stifled and described front working hole valve core housing of described front working hole glue, the front working hole valve core housing at described air cavity P place offers a through hole, valve body is offering gas circuit relative to the place of described through hole on described front working hole valve core housing and described side working hole spool is connected;
In addition, described front control knob comprises:
One press part, described press part is a lamellar body, and described press part protrudes from described valve body;
One cam arc portion, described cam arc portion is a circular arc body, and the one end in described cam arc portion is connected with described press part;
One cam flat portion, described cam flat portion is a plane body, and the one end in described cam flat portion is connected with the other end in described cam arc portion;
One supporting portion, described supporting portion offers a through hole, and described supporting portion is connected with described valve body by described through hole by fixing pin, described press part, cam arc portion, cam flat portion and described supporting portion is one-body molded makes.
According to the dual control Aeroassisted shift handle of the cam-deflection described in the embodiment of the present invention, working hole spool combination in described side comprises:
Side working hole valve core housing, described side working hole valve core housing is a 3 stops cylindrical body, and described side working hole valve core housing is arranged in described side valve core work in combination hole;
Side working hole spool, described side working hole spool is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, the cylindrical body that diameter is less is valve core rod portion, described side working hole spool is plugged in the working hole valve core housing of described side, and the spool guide portion of described side working hole spool is provided with side working hole seal ring;
Side working hole valve core reseting spring, described side working hole valve core reseting spring is plugged in the working hole valve core housing of described side, one end of described side working hole valve core reseting spring is connected with described side working hole valve core housing, and the other end of described side working hole valve core reseting spring is connected with the spool guide portion of described side working hole spool;
Side working hole glue blocks up, and it is a circular colloid that described side working hole glue blocks up, and described side working hole glue is stifled to be placed in the working hole valve core housing of described side, and one end that described side working hole glue blocks up is flexibly connected with described side working hole valve core housing;
Side working hole glue blocks up Returnning spring, described side working hole glue blocks up Returnning spring and is plugged in the working hole valve core housing of described side, one end that described side working hole glue blocks up Returnning spring is connected with described side working hole valve core housing, and the other end that described side working hole glue blocks up Returnning spring is connected with the other end that described side working hole glue blocks up;
One ball bearing, described ball bearing is arranged on one end of the spool guide portion of described side working hole spool, and described ball bearing rolls with described side control knob and is connected,
Wherein, two air cavitys are formed between described side working hole spool and described side working hole valve core housing, be air cavity T and air cavity U respectively, block up the position at Returnning spring place simultaneously at described side working hole glue, described side working hole glue blocks up and forms air cavity S between the working hole valve core housing of described side;
In addition, described side control knob comprises:
One clicking section, described clicking section is a lamellar body, and described clicking section protrudes from described valve body;
One roll extrusion portion, described roll extrusion portion is a lamellar body, and the one side that described roll extrusion portion is connected with described ball bearing comprises: a rolling roll extrusion stop, and described rolling roll extrusion stop is a circular arc;
One rolling roll extrusion working part, described rolling roll extrusion working part is a circular arc, the side of described rolling roll extrusion working part is connected with described rolling roll extrusion stop, and the distance of described rolling roll extrusion working part and described side working hole valve core housing is less than the distance of described rolling roll extrusion stop and described side working hole valve core housing;
A set of support part, described cover support part is a circular cylinder body, and described cover support part is connected with described roll extrusion portion, and the manhole of described cover support part is set on the cylinder of described valve body, described clicking section, roll extrusion portion and described cover support part is one-body molded makes.
According to the dual control Aeroassisted shift handle of the cam-deflection described in the embodiment of the present invention, described dual control gas circuit structure comprises:
Working hole spool combination air inlet gas circuit before one, described front working hole spool combination air inlet gas circuit is a pipeline being opened in described valve body, described front working hole spool combination air inlet gas circuit is parallel to the axle center of described valve body, one end of described front working hole spool combination air inlet gas circuit is described air cavity P, and the other end of described front working hole spool combination air inlet gas circuit is the bottom of described valve body;
Side working hole spool combination air inlet gas circuit, described side working hole spool combination air inlet gas circuit is a pipeline being opened in described valve body, one end of described side working hole spool combination air inlet gas circuit is the through hole that the front working hole valve core housing at described air cavity P place is offered, and the other end of described side working hole spool combination air inlet gas circuit is described air cavity S; Described side working hole spool combination air inlet gas circuit is less than 90 degree of pipelines extended out by described through hole with the angle in the axle center of described valve body and is connected a pipeline leading to described air cavity S being parallel to the axle center of described valve body and is formed by one;
Working hole spool work in combination gas circuit before one, described front working hole spool work in combination gas circuit is a pipeline being opened in described valve body, one end of described front working hole spool work in combination gas circuit is described air cavity Q, the other end of described front working hole spool work in combination gas circuit is the bottom of described valve body, and described front working hole spool work in combination gas circuit is formed by a pipeline extended out by described air cavity Q perpendicular to the axle center of described valve body connects a pipeline leading to described body base being parallel to the axle center of described valve body;
Side working hole spool work in combination gas circuit, described side working hole spool work in combination gas circuit is a pipeline being opened in described valve body, one end of described side working hole spool work in combination gas circuit is described air cavity T, the other end of described side working hole spool work in combination gas circuit is the bottom of described valve body, and described side working hole spool work in combination gas circuit is formed by a pipeline extended out by described air cavity T perpendicular to the axle center of described valve body connects the pipeline leading to described body base in an axle center being parallel to described valve body;
One exhaust gas circuit, described exhaust gas circuit is a pipeline being opened in described valve body, one end of described exhaust gas circuit is the bottom of described valve body, the other end of described exhaust gas circuit connects described air cavity R and described air cavity U respectively, and described exhaust gas circuit is formed by pipeline that described body base is led in axle center that one is parallel to described valve body connects the pipeline leading to the axle center perpendicular to described valve body of described air cavity R and described air cavity U respectively.
According to the dual control Aeroassisted shift handle of the cam-deflection described in the embodiment of the present invention, described enter air outlet structure comprise: the combination of 4 tracheaes, be respectively the tracheae combination of 1 air intake structure, article 2, the combination of the tracheae for the gas circuit that works of air outlet structure and the tracheae combination for being vented gas circuit of 1 air outlet structure, tracheae combination described in every bar comprises a fittings body and a tracheae, described fittings body is connected with described dual control gas circuit structure, and 2 the tracheae combinations for the gas circuit that works in 1 tracheae combination and air outlet structure of air intake structure also respectively comprise a rapid pipe joint, described rapid pipe joint then connects the quick inserting joint outside the bottom of described valve body.
Owing to have employed above technical characteristics, the present invention is made to have following advantage and good effect compared to prior art:
The first, project organization of the present invention is simply compact, effectively controls the operation of gas circuit, reduces production hour, has saved cost;
The second, rolling toggle switch of the present invention, button reduces frictional force with the Structure deformation of face and ball bearing, decreases wearing and tearing longer service life;
Three, processing ease of the present invention, driver can easy manipulation, increases work efficiency;
Four, of the present invention enter air outlet structure design, the wearing and tearing of tracheae can be reduced, also reduce difficulty and the replacing construction of more scavenge trunk, excessive gas is discharged into outside operator cabin, form comfortable working environment and improve working efficiency.
Certainly, implement any one specific embodiment of content of the present invention, above whole technique effect might not be had simultaneously.
Accompanying drawing explanation
Fig. 1 is handle arrangement schematic diagram of the present invention;
Fig. 2 is working hole spool composite structure schematic diagram before the present invention;
Fig. 3 is control knob perspective view before the present invention;
Fig. 4 is side of the present invention working hole spool composite structure schematic diagram;
Fig. 5 is the EE cutaway view of Fig. 4;
Fig. 6 is side of the present invention control knob perspective view;
Fig. 7 is the polycrystalline substance schematic diagram of handle of the present invention;
Fig. 8 is the AA sectional view of Fig. 7;
Fig. 9 is the polycrystalline substance schematic diagram of handle of the present invention;
Figure 10 is the BB sectional view of Fig. 9;
Figure 11 is the polycrystalline substance schematic diagram of handle of the present invention;
Figure 12 is the CC sectional view of Figure 11;
Figure 13 is the polycrystalline substance schematic diagram of handle of the present invention;
Figure 14 is the DD sectional view of Figure 13;
Figure 15 is that the present invention enters air outlet structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, several preferred embodiment of the present invention is described in detail, but the present invention is not restricted to these embodiments.The present invention contain any make on marrow of the present invention and scope substitute, amendment, equivalent method and scheme.To have the present invention to make the public and understand thoroughly, in the following preferred embodiment of the present invention, describe concrete details in detail, and do not have the description of these details also can understand the present invention completely for a person skilled in the art.In addition, in order to avoid causing unnecessary obscuring to essence of the present invention, well-known method, process, flow process, element etc. are not described in detail.
Please refer to Fig. 1, a kind of dual control Aeroassisted shift handle, comprise a shell 10, one valve body 20, working hole spool combination 30 before one, control knob 40 before one, side working hole spool combination 50, side control knob 60, enter air outlet structure 70 and dual control gas circuit structure 80, described shell 10 offers a groove, described valve body 20 is set in described groove, described valve body 20 offers two spool work in combination holes and be respectively front valve core work in combination hole 21 and side valve core work in combination hole 22, described front working hole spool combination 30 is arranged in described front valve core work in combination hole 21, and described side working hole spool combination 50 is arranged in described side valve core work in combination hole 22, described front control knob 40 is connected with described valve body 20 by fixing pin 11, shell 10 offers screwed lock and pays through hole, valve body 20 is paid the position of through hole offer screw hole relative to shell 10 lock of tightening up a screw, together with shell 10 and valve body 20 are paid with screwed lock, shell 10 is also adhesive with gear direction board (not shown), gear direction board covers screwed lock and pays on through hole, be used for telling the ordinal position of driver's gear.
In addition, please refer to Fig. 2, described front working hole spool combination 30 comprises: before before one, before working hole valve core housing 301, before working hole spool 302, before working hole valve core reseting spring 305, working hole glue blocks up 306, one, working hole glue blocks up Returnning spring 307 and one first male means 308.
Wherein, described front working hole valve core housing 301 is a 3 stops cylindrical body, the internal diameter of the cylindrical body of one section, centre is less than the internal diameter of the cylindrical body of two sections, front and back, so form step in the place connected, described front working hole valve core housing 301 is arranged in described front valve core work in combination hole 21.
And described front working hole spool 302 is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, and the less cylindrical body of diameter is valve core rod portion, described front working hole spool 302 is plugged in described front working hole valve core housing 301, the spool guide portion of described front working hole spool 302 is provided with front working hole seal ring 303, front working hole seal ring 303 be arranged so that front working hole spool combination 30 airtight effect better, in addition, production orientation band 304 before the spool guide portion of front working hole spool 302 can also be arranged, front production orientation band 304 effectively can be supported on the lateral force that before in high to low gear handoff procedure, working hole spool 302 is subject to, stable guiding is played to front working hole spool 302, avoid the wearing and tearing of front working hole spool 302.
In addition, described front working hole valve core reseting spring 305 is plugged in described front working hole valve core housing 301, one end of described front working hole valve core reseting spring 305 is connected with described front working hole valve core housing 301, and the other end of described front working hole valve core reseting spring 305 is connected with the spool guide portion of described front working hole spool 302.
And described front working hole glue blocks up Returnning spring 307 is plugged in described front working hole valve core housing 301, one end that described front working hole glue blocks up Returnning spring 307 is connected with described front working hole valve core housing 301.
Described front working hole glue stifled 306 is a circular colloid, described front working hole glue stifled 306 is placed in described front working hole valve core housing 301, one end that described front working hole glue blocks up 306 connects described front working hole glue and blocks up the other end of Returnning spring 307, the other end that described front working hole glue blocks up 306 is flexibly connected with described front working hole valve core housing 301, current control knob upward time, front working hole glue blocks up 306 and is subject to front working hole glue and blocks up impact that Returnning spring 307 expands response force and move up and to contact with described front working hole valve core housing 301, be limited in the position of setting, and current control knob downward time, front working hole glue blocks up the downward strength that 306 are subject to the valve core rod portion of front working hole spool 302, the front working hole glue of compressing blocks up Returnning spring 307 and compresses downwards, now, front working hole glue stifled 306 leaves front working hole valve core housing 301 and leaves space, gas can circulate.
Also have, described first male means 308 is arranged on one end of the spool guide portion of described front working hole spool 302, one end of described first male means 308 is connected with the spool guide portion of described front working hole spool 302, the other end of described first male means 308 is connected with described front control knob 40, embodiment one, described first male means 308 is ball bearings, described ball bearing is arranged on one end of the spool guide portion of described front working hole spool 302, one end of described ball bearing is connected with the spool guide portion of described front working hole spool 302, the other end of described ball bearing is connected with described front control knob 40, from the angle of machinery, rolling friction is less compared to other types friction surface friction drag, this can effectively reduce because high to low gear switches the wearing and tearing brought front control knob 40.In addition, embodiment two, described first male means 308 is half ball bearings, described hemisphere bearing is arranged on one end of the spool guide portion of described front working hole spool 302, one end of described hemisphere bearing plane is connected with the spool guide portion of described front working hole spool 302, spherical one end of described hemisphere bearing is connected with described front control knob 40, in addition, embodiment three, described first male means 308 is sphere cylinder bearings, described sphere cylinder bearing is arranged on one end of the spool guide portion of described front working hole spool 302, one end of described sphere cylinder bearing bottom surface is connected with the spool guide portion of described front working hole spool 302, sphere one end of described sphere cylinder bearing is connected with described front control knob 40.
In addition, front working hole valve core housing 301 is also arranged with some seal rings, be used for ensureing that front working hole spool combines the sealing of 30 gases, wherein, two air cavitys are formed between described front working hole spool 302 and front working hole valve core housing 301, air cavity Q and air cavity R respectively, block up the position at Returnning spring 307 place at described front working hole glue simultaneously, air cavity P is formed between described front working hole glue stifled 306 and described front working hole valve core housing 301, the front working hole valve core housing 301 at described air cavity P place offers a through hole 3011, valve body 20 combines 50 with described side working hole spool and is connected offering gas circuit relative to the place of through hole 3011 on described front working hole valve core housing 301, when described air cavity P ventilates, gas enters the suction port of described side working hole spool combination 50 by gas circuit, when front control knob 40 is not pressed, air cavity Q and air cavity R communicates, and when front control knob 40 is pressed, air cavity Q and air cavity R does not communicate, and air cavity Q and air cavity P communicates.
Then, please refer to Fig. 3, described front control knob 40 comprises: cam flat portion of cam arc portion 402, press part 401, one 403 and a supporting portion 404.
Wherein, described press part 401 is a lamellar body, and described press part 401 can be square lamellar body, circular lamellar body or other shape lamellar bodies, as long as be conducive to pressing, described press part 401 protrudes from described valve body 20.
And described cam arc portion 402 is a circular arc body, the one end in described cam arc portion 402 is connected with described press part 401, in addition, can press-fit a wear-resistant material layer in cam arc portion 402 interference fit, the abrasion resistance in cam arc portion 402 can be improved like this, increase working life.
In addition, described cam flat portion 403 is a plane body, and the one end in described cam flat portion 403 is connected with the other end in described cam arc portion 402; Cam flat portion 403 defines cam-deflection effect with the combination in cam arc portion 402, the forward control knob 40 of shift handle stir the switching realizing high to low gear up and down, its event trace is divided into 3 parts.The first, front control knob 40 have when high gear district one effectively, firmly spacing, it plays the effect of position limitation to spool in back off procedure.The second, when being switched from high gear toward low gear, spool can along front control knob 40 beat through a most limit inferior point, and it plays a clear and definite boundary to high gear district and low gear district, needs certain force value beat button to realize high to low gear and switches.3rd, front control knob 40 also have when low gear district one effectively, firmly spacing, it makes front control knob 40 can not unrestrictedly down beat, and up beat also needs certain force value simultaneously, therefore plays the defect stoping button arbitrarily to rock.
In addition, described supporting portion 404 offers a through hole, described supporting portion 404 is connected with described valve body 20 by described through hole by fixing pin, described press part 401, cam arc portion 402, cam flat portion 403 and described supporting portion 404 is one-body molded makes, in addition, in the place that described cam arc portion 402 contacts with described first male means 308 with described cam flat portion 403, offer arc groove, it is alternatively front button Attrition Reserve groove, the process that shift handle switches in high to low gear, the namely process of spool and the movement on front control knob 40 of the first male means 308. this will certainly cause wearing and tearing.The effect of preformed groove is exactly stress surface when increasing mobile, effectively reduces the wearing and tearing brought front control knob 40 when the first male means 308 moves, and makes the movement that the first male means 308 can be smooth-going, saves time and the strength of driver's gearshift.
In addition, please refer to Fig. 4, Fig. 5 and Fig. 6, working hole spool combination in described side 50 comprises: side working hole valve core housing 501, side working hole spool 502, side working hole valve core reseting spring 505, side working hole glue are stifled 506, side working hole glue blocks up Returnning spring 507 and a ball bearing 508.
Wherein, described side working hole valve core housing 501 is a 3 stops cylindrical body, the internal diameter of the cylindrical body of one section, centre is less than the internal diameter of the cylindrical body of two sections, front and back, so form step in the place connected, described side working hole valve core housing 501 is arranged in described side valve core work in combination hole 22.
And described side working hole spool 502 is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, the cylindrical body that diameter is less is valve core rod portion, described side working hole spool 502 is plugged in described side working hole valve core housing 501, the spool guide portion of described side working hole spool 502 is provided with side working hole seal ring 503, side working hole seal ring 503 be arranged so that the airtight effect of side working hole spool combination 50 is better, in addition, at the spool guide portion of side working hole spool 502, side production orientation band 504 can also be set, side production orientation band 504 effectively can be supported on the lateral force that in high to low gear handoff procedure, side working hole spool 502 is subject to, stable guiding is played to side working hole spool 502, avoid the wearing and tearing of side working hole spool 502.
And described side working hole valve core reseting spring 505 is plugged in described side working hole valve core housing 501, one end of described side working hole valve core reseting spring 505 is connected with described side working hole valve core housing 501, and the other end of described side working hole valve core reseting spring 505 is connected with the spool guide portion of described side working hole spool 502.
In addition, described side working hole glue blocks up Returnning spring 507 and is plugged in described side working hole valve core housing 501, and one end that described side working hole glue blocks up Returnning spring 507 is connected with described side working hole valve core housing 501.
And described side working hole glue stifled 506 is a circular colloid, described side working hole glue stifled 506 is placed in described side working hole valve core housing 501, one end that described side working hole glue blocks up 506 connects the other end that described side working hole glue blocks up Returnning spring 507, and the other end that described side working hole glue blocks up 506 is flexibly connected with described side working hole valve core housing 501.
Also have, described ball bearing 508 is arranged on one end of the spool guide portion of described side working hole spool 502, one end of described ball bearing 508 is connected with the spool guide portion of described side working hole spool 502, the other end of described ball bearing 508 rolls with described side control knob 60 and is connected, from the angle of machinery, rolling friction is less compared to other types friction surface friction drag. and this can effectively reduce because high to low gear switches the wearing and tearing brought button.
And wherein, two air cavitys are formed between described side working hole spool 502 and described side working hole valve core housing 501, air cavity T and air cavity U respectively, block up the position at Returnning spring 507 place simultaneously at described side working hole glue, between described side working hole glue stifled 506 and described side working hole valve core housing 501, form air cavity S.
In addition, described side control knob 60 comprises: roll extrusion portion 602, clicking section 601, one and an a set of support part 603.
Wherein, described clicking section 601 is a lamellar body, and described clicking section 601 can be square lamellar body, circular lamellar body or other shape lamellar bodies, as long as be conducive to stirring, described clicking section 601 protrudes from described valve body 20.
In addition, described roll extrusion portion 602 is a lamellar body, the one side that described roll extrusion portion 602 is connected with described ball bearing 508 comprises: rolling roll extrusion stop 6021 and a rolling roll extrusion working part 6022, wherein, described rolling roll extrusion stop 6021 is a circular arc, and described rolling roll extrusion working part 6022 is also a circular arc, the side of described rolling roll extrusion working part 6022 is connected with described rolling roll extrusion stop 6021; Described rolling roll extrusion working part 6022 and the distance of described side working hole valve core housing 501 are less than the distance of described rolling roll extrusion stop 6021 and described side working hole valve core housing 501; Rolling roll extrusion stop 6021 and rolling roll extrusion working part 6022 define to roll dials section, shift handle stirs by the front and back of side control knob 60 switching realizing high to low gear, its event trace is divided into 3 parts, first, side control knob 60 have when high gear district one effectively, firmly spacing, it effectively ensures that side working hole spool 502 falls into the reserved location of side control knob 60 when high gear district; The second, when being switched from high gear toward low gear, spool can along side control knob 60 beat through a most limit inferior point, and it plays a clear and definite boundary to high gear district and low gear district, needs certain force value beat side control knob 60 to realize high to low gear and switches; 3rd, side control knob 60 also have when low gear district one effectively, firmly spacing, it effectively ensures that side working hole spool 502 falls into the reserved location of side control knob 60 when low gear district.
Further, described cover support part 603 is a circular cylinder body, and described cover support part 603 is connected with described roll extrusion portion 602; The manhole of described cover support part 603 is set on the cylinder of described valve body 20, described clicking section 601, roll extrusion portion 602 and described cover support part 603 is one-body molded makes.In addition, in the place that described rolling roll extrusion stop 6021 contacts with described ball bearing 508 with described rolling roll extrusion working part 6022, offer arc groove, it is alternatively side button Attrition Reserve groove, the process that shift handle switches in high to low gear, namely spool and ball bearing 508 process of rolling on side control knob 60, this will certainly cause wearing and tearing.The effect of preformed groove is exactly increase stress surface when rolling, and effectively reduces ball bearing 508 and to roll the wearing and tearing that offside control knob 60 brings, and makes the movement that ball bearing 508 can be smooth-going, saves time and the strength of driver's gearshift.
When rolling roll extrusion stop 6021 contacts with ball bearing 508, when namely side working hole spool 502 is not pressed, air cavity T and air cavity U communicates, when rolling roll extrusion working part 6022 contacts with ball bearing 508, when namely side working hole spool 502 is pressed, air cavity T and air cavity U does not communicate, and air cavity T and air cavity S-phase are led to.
In addition, described dual control gas circuit structure 80 comprises: working hole spool combination air inlet gas circuit 801 before, side working hole spool combination air inlet gas circuit 802, are vented working hole spool work in combination gas circuit 804 and side working hole spool work in combination gas circuit 805 before gas circuit 803.
Wherein, please refer to Fig. 7 and Fig. 8, described front working hole spool combination air inlet gas circuit 801 is a pipeline being opened in described valve body 20, described front working hole spool combination air inlet gas circuit 801 is parallel to the axle center of described valve body 20, one end of described front working hole spool combination air inlet gas circuit 801 is described air cavity P, and the other end of described front working hole spool combination air inlet gas circuit 801 is the bottom of described valve body 20, and described side working hole spool combination air inlet gas circuit 802 is a pipeline being opened in described valve body 20, one end of described side working hole spool combination air inlet gas circuit 802 is the through hole 3011 that the front working hole valve core housing at described air cavity P place is offered, the other end of described side working hole spool combination air inlet gas circuit 802 is described air cavity S, described side working hole spool combination air inlet gas circuit 802 is less than 90 degree of pipelines extended out by described through hole 3011 with the angle in the axle center of described valve body 20 and is connected a pipeline leading to described air cavity S being parallel to the axle center of described valve body 20 and is formed by one.
In addition, please refer to Fig. 9 and Figure 10, described exhaust gas circuit 803 is a pipeline being opened in described valve body 20, one end of described exhaust gas circuit 803 is the bottom of described valve body 20, the other end of described exhaust gas circuit 803 connects described air cavity R and described air cavity U respectively, and described exhaust gas circuit 803 is formed by the pipeline leading to described body base that one is parallel to the axle center of described valve body 20 connects the pipeline leading to the axle center perpendicular to described valve body 20 of described air cavity R and described air cavity U respectively.
Please refer to Figure 11 and Figure 12 again, described front working hole spool work in combination gas circuit 804 is a pipeline being opened in described valve body 20, one end of described front working hole spool work in combination gas circuit 804 is described air cavity Q, the other end of described front working hole spool work in combination gas circuit 804 is the bottom of described valve body 20, and described front working hole spool work in combination gas circuit 804 is formed by a pipeline extended out by described air cavity Q perpendicular to the axle center of described valve body 20 connects a pipeline leading to described body base being parallel to the axle center of described valve body 20.
Please refer to Figure 13 and Figure 14 again, described side working hole spool work in combination gas circuit 805 is a pipeline being opened in described valve body 20, one end of described side working hole spool work in combination gas circuit 805 is described air cavity T, the other end of described side working hole spool work in combination gas circuit 805 is the bottom of described valve body 20, and described side working hole spool work in combination gas circuit 805 is formed by a pipeline extended out by described air cavity T perpendicular to the axle center of described valve body 20 connects a pipeline leading to described body base being parallel to the axle center of described valve body 20.In gas circuit design, main design point has 1. to realize the shunt to gas circuit at shift handle suction port to two working portions, and guaranteed flow is stable.2. realize the merging to gas circuit at shift handle two working portion to relief opening, guarantee that function does not interfere with each other, and guaranteed flow is stable.
In addition, please refer to Figure 15, described enter air outlet structure 70 comprise: the combination of 4 tracheaes, be respectively the tracheae combination of 1 air intake structure, article 2, the combination of the tracheae for the gas circuit that works of air outlet structure and the tracheae combination for being vented gas circuit of 1 air outlet structure, tracheae combination described in every bar comprises fittings body 701 and a tracheae 702, described fittings body 701 is connected with described dual control gas circuit structure, namely with dual control gas circuit structure before working hole spool combination air inlet gas circuit 801, front working hole spool work in combination gas circuit 804, side working hole spool work in combination gas circuit 805 and exhaust gas circuit 803 connect respectively, reach the function of air inlet and exhaust, and 2 tracheae combinations for the gas circuit that works in 1 tracheae combination and air outlet structure of air intake structure also respectively comprise a rapid pipe joint 703, described rapid pipe joint 703 connects the quick inserting joint 704 outside the bottom of described valve body 20.Exhaust gas circuit 803 passes through tracheae 702 by the outside of gas discharging to operator cabin.In actual use, owing to often stirring shift handle, the wearing and tearing of tracheae usually can be caused, in the prior art, it is long that tracheae directly moves shift handle length to by air valve, changes consuming time being not easy, this patent, except increasing an outlet pipe combination, directly will be discharged into outside operator cabin more than gas, in addition, increase by 3 tracheae combinations, length is short is comparatively not easy wearing and tearing, even if wear and tear, changes to get up also to be easy to, save the operating time, cost is also lower; And this extraction connection set connects the connection of shift handle main body employing interference riveted type, can meet withstand voltage demand completely, in addition, self tracheae of extraction connection set adopts collar-shaped to connect in succession, can improve sealability, meets withstand voltage demand completely.
Owing to have employed above technical characteristics, the present invention is made to have following advantage and good effect compared to prior art:
The first, project organization of the present invention is simply compact, effectively controls the operation of gas circuit, reduces production hour, has saved cost;
The second, rolling toggle switch of the present invention, button reduces frictional force with the Structure deformation of face and ball bearing, decreases wearing and tearing longer service life;
Three, processing ease of the present invention, driver can easy manipulation, increases work efficiency;
Four, of the present invention enter air outlet structure design, the wearing and tearing of tracheae can be reduced, also reduce difficulty and the replacing construction of more scavenge trunk, excessive gas is discharged into outside operator cabin, form comfortable working environment and improve working efficiency.
Invention preferred embodiment just sets forth the present invention for helping.Preferred embodiment does not have all details of detailed descriptionthe, does not limit the embodiment that this invention is only described yet.Obviously, according to the content of this specification, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technician can utilize the present invention well.The present invention is only subject to the restriction of claims and four corner and equivalent.It is only preferred embodiment of the present invention above; but be not used for limiting itself; anyly have the knack of those skilled in the art when without prejudice to spiritual connotation of the present invention, the equalization change done and changing, all should drop in protection scope of the present invention.
Claims (4)
1. the dual control Aeroassisted shift handle of a cam-deflection, comprise a shell, one valve body, working hole spool combination before one, control knob before one, side working hole spool combination, side control knob, enter air outlet structure and dual control gas circuit structure, described shell offers a groove, described valve body is set in described groove, described valve body offers two spool work in combination holes and be respectively front valve core work in combination hole and side valve core work in combination hole, described front working hole spool combination is arranged in described front valve core work in combination hole, and working hole spool combination in described side is arranged in described side valve core work in combination hole, described front control knob is connected with described valve body by fixing pin, it is characterized in that, described front working hole spool combination comprises:
Working hole valve core housing before one, described front working hole valve core housing is a 3 stops cylindrical body, and described front working hole valve core housing is arranged in described front valve core work in combination hole;
Working hole spool before one, described front working hole spool is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, the cylindrical body that diameter is less is valve core rod portion, described front working hole spool is plugged in described front working hole valve core housing, and the spool guide portion of described front working hole spool is provided with front working hole seal ring;
Working hole valve core reseting spring before one, described front working hole valve core reseting spring is plugged in described front working hole valve core housing, one end of described front working hole valve core reseting spring is connected with described front working hole valve core housing, and the other end of described front working hole valve core reseting spring is connected with the spool guide portion of described front working hole spool;
Before one, working hole glue blocks up, and it is a circular colloid that described front working hole glue blocks up, and described front working hole glue is stifled to be placed in described front working hole valve core housing, and one end that described front working hole glue blocks up is flexibly connected with described front working hole valve core housing;
Before one, working hole glue blocks up Returnning spring, described front working hole glue blocks up Returnning spring and is plugged in described front working hole valve core housing, one end that described front working hole glue blocks up Returnning spring is connected with the other end that described front working hole glue blocks up, and the other end that described front working hole glue blocks up Returnning spring is connected with described front working hole valve core housing;
One ball bearing, described ball bearing is arranged on one end of the spool guide portion of described front working hole spool, and described ball bearing is connected with described front control knob,
And wherein, two air cavitys are formed between described front working hole spool and front working hole valve core housing, air cavity Q and air cavity R respectively, simultaneously, the position at Returnning spring place is blocked up at described front working hole glue, form air cavity P between the stifled and described front working hole valve core housing of described front working hole glue, the front working hole valve core housing at described air cavity P place offers a through hole, valve body is offering gas circuit relative to the place of described through hole on described front working hole valve core housing and described side working hole spool is connected;
In addition, described front control knob comprises:
One press part, described press part is a lamellar body, and described press part protrudes from described valve body;
One cam arc portion, described cam arc portion is a circular arc body, and the one end in described cam arc portion is connected with described press part;
One cam flat portion, described cam flat portion is a plane body, and the one end in described cam flat portion is connected with the other end in described cam arc portion;
One supporting portion, described supporting portion offers a through hole, and described supporting portion is connected with described valve body by described through hole by fixing pin, described press part, cam arc portion, cam flat portion and described supporting portion is one-body molded makes.
2. the dual control Aeroassisted shift handle of cam-deflection as claimed in claim 1, is characterized in that, working hole spool combination in described side comprises:
Side working hole valve core housing, described side working hole valve core housing is a 3 stops cylindrical body, and described side working hole valve core housing is arranged in described side valve core work in combination hole;
Side working hole spool, described side working hole spool is two concentric cylindrical body compositions, the cylindrical body that diameter is larger is spool guide portion, the cylindrical body that diameter is less is valve core rod portion, described side working hole spool is plugged in the working hole valve core housing of described side, and the spool guide portion of described side working hole spool is provided with side working hole seal ring;
Side working hole valve core reseting spring, described side working hole valve core reseting spring is plugged in the working hole valve core housing of described side, one end of described side working hole valve core reseting spring is connected with described side working hole valve core housing, and the other end of described side working hole valve core reseting spring is connected with the spool guide portion of described side working hole spool;
Side working hole glue blocks up, and it is a circular colloid that described side working hole glue blocks up, and described side working hole glue is stifled to be placed in the working hole valve core housing of described side, and one end that described side working hole glue blocks up is flexibly connected with described side working hole valve core housing;
Side working hole glue blocks up Returnning spring, described side working hole glue blocks up Returnning spring and is plugged in the working hole valve core housing of described side, one end that described side working hole glue blocks up Returnning spring is connected with described side working hole valve core housing, and the other end that described side working hole glue blocks up Returnning spring is connected with the other end that described side working hole glue blocks up;
One ball bearing, described ball bearing is arranged on one end of the spool guide portion of described side working hole spool, and described ball bearing rolls with described side control knob and is connected,
Wherein, two air cavitys are formed between described side working hole spool and described side working hole valve core housing, be air cavity T and air cavity U respectively, block up the position at Returnning spring place simultaneously at described side working hole glue, described side working hole glue blocks up and forms air cavity S between the working hole valve core housing of described side;
In addition, described side control knob comprises:
One clicking section, described clicking section is a lamellar body, and described clicking section protrudes from described valve body;
One roll extrusion portion, described roll extrusion portion is a lamellar body, and the one side that described roll extrusion portion is connected with described ball bearing comprises: a rolling roll extrusion stop, and described rolling roll extrusion stop is a circular arc;
One rolling roll extrusion working part, described rolling roll extrusion working part is a circular arc, the side of described rolling roll extrusion working part is connected with described rolling roll extrusion stop, and the distance of described rolling roll extrusion working part and described side working hole valve core housing is less than the distance of described rolling roll extrusion stop and described side working hole valve core housing;
A set of support part, described cover support part is a circular cylinder body, and described cover support part is connected with described roll extrusion portion,
The manhole of described cover support part is set on the cylinder of described valve body, described clicking section, roll extrusion portion and described cover support part is one-body molded makes.
3. the dual control Aeroassisted shift handle of cam-deflection as claimed in claim 2, it is characterized in that, described dual control gas circuit structure comprises:
Working hole spool combination air inlet gas circuit before one, described front working hole spool combination air inlet gas circuit is a pipeline being opened in described valve body, described front working hole spool combination air inlet gas circuit is parallel to the axle center of described valve body, one end of described front working hole spool combination air inlet gas circuit is described air cavity P, and the other end of described front working hole spool combination air inlet gas circuit is the bottom of described valve body;
Side working hole spool combination air inlet gas circuit, described side working hole spool combination air inlet gas circuit is a pipeline being opened in described valve body, one end of described side working hole spool combination air inlet gas circuit is the through hole that the front working hole valve core housing at described air cavity P place is offered, and the other end of described side working hole spool combination air inlet gas circuit is described air cavity S; Described side working hole spool combination air inlet gas circuit is less than 90 degree of pipelines extended out by described through hole with the angle in the axle center of described valve body and is connected a pipeline leading to described air cavity S being parallel to the axle center of described valve body and is formed by one;
Working hole spool work in combination gas circuit before one, described front working hole spool work in combination gas circuit is a pipeline being opened in described valve body, one end of described front working hole spool work in combination gas circuit is described air cavity Q, the other end of described front working hole spool work in combination gas circuit is the bottom of described valve body, and described front working hole spool work in combination gas circuit is formed by a pipeline extended out by described air cavity Q perpendicular to the axle center of described valve body connects a pipeline leading to described body base being parallel to the axle center of described valve body;
Side working hole spool work in combination gas circuit, described side working hole spool work in combination gas circuit is a pipeline being opened in described valve body, one end of described side working hole spool work in combination gas circuit is described air cavity T, the other end of described side working hole spool work in combination gas circuit is the bottom of described valve body, and described side working hole spool work in combination gas circuit is formed by a pipeline extended out by described air cavity T perpendicular to the axle center of described valve body connects the pipeline leading to described body base in an axle center being parallel to described valve body;
One exhaust gas circuit, described exhaust gas circuit is a pipeline being opened in described valve body, one end of described exhaust gas circuit is the bottom of described valve body, the other end of described exhaust gas circuit connects described air cavity R and described air cavity U respectively, and described exhaust gas circuit is formed by pipeline that described body base is led in axle center that one is parallel to described valve body connects the pipeline leading to the axle center perpendicular to described valve body of described air cavity R and described air cavity U respectively.
4. the dual control Aeroassisted shift handle of cam-deflection as claimed in claim 3, it is characterized in that, described enter air outlet structure comprise: the combination of 4 tracheaes, be respectively the tracheae combination of 1 air intake structure, article 2, the combination of the tracheae for the gas circuit that works of air outlet structure and the tracheae combination for being vented gas circuit of 1 air outlet structure, tracheae combination described in every bar comprises a fittings body and a tracheae, described fittings body is connected with described dual control gas circuit structure, and 2 the tracheae combinations for the gas circuit that works in 1 tracheae combination and air outlet structure of air intake structure also respectively comprise a rapid pipe joint, described rapid pipe joint then connects the quick inserting joint outside the bottom of described valve body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430884.5A CN102943875B (en) | 2012-11-02 | 2012-11-02 | The dual control Aeroassisted shift handle of cam-deflection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430884.5A CN102943875B (en) | 2012-11-02 | 2012-11-02 | The dual control Aeroassisted shift handle of cam-deflection |
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| CN102943875A CN102943875A (en) | 2013-02-27 |
| CN102943875B true CN102943875B (en) | 2016-01-06 |
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| DE102014000282A1 (en) * | 2014-01-15 | 2015-07-16 | Hoerbiger Automotive Komfortsysteme Gmbh | Pneumatic shift assistance device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380938A (en) * | 1981-03-12 | 1983-04-26 | American Standard Inc. | Combination transmission gear selector valve for automotive vehicles |
| US5172603A (en) * | 1991-05-03 | 1992-12-22 | Macinnis Richard F | Electrically actuated shifting method and apparatus |
| CN2769622Y (en) * | 2004-09-15 | 2006-04-05 | 李宏军 | Pneumatic selecting and gearshifting control valve |
| CN202108979U (en) * | 2011-06-15 | 2012-01-11 | 浙江亿日气动科技有限公司 | Automobile gear shifting handle |
| CN102620023A (en) * | 2012-03-20 | 2012-08-01 | 宁波弗莱格液压有限公司 | Damping valve of variable-speed rod operating mechanism |
| CN202927020U (en) * | 2012-11-02 | 2013-05-08 | 浙江亿日气动科技有限公司 | Double-control pneumatic auxiliary gearshift with cam deflection |
-
2012
- 2012-11-02 CN CN201210430884.5A patent/CN102943875B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380938A (en) * | 1981-03-12 | 1983-04-26 | American Standard Inc. | Combination transmission gear selector valve for automotive vehicles |
| US5172603A (en) * | 1991-05-03 | 1992-12-22 | Macinnis Richard F | Electrically actuated shifting method and apparatus |
| CN2769622Y (en) * | 2004-09-15 | 2006-04-05 | 李宏军 | Pneumatic selecting and gearshifting control valve |
| CN202108979U (en) * | 2011-06-15 | 2012-01-11 | 浙江亿日气动科技有限公司 | Automobile gear shifting handle |
| CN102620023A (en) * | 2012-03-20 | 2012-08-01 | 宁波弗莱格液压有限公司 | Damping valve of variable-speed rod operating mechanism |
| CN202927020U (en) * | 2012-11-02 | 2013-05-08 | 浙江亿日气动科技有限公司 | Double-control pneumatic auxiliary gearshift with cam deflection |
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