CN109826946A - A kind of Liang Dang gearbox shifting mechanism - Google Patents
A kind of Liang Dang gearbox shifting mechanism Download PDFInfo
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- CN109826946A CN109826946A CN201910204282.XA CN201910204282A CN109826946A CN 109826946 A CN109826946 A CN 109826946A CN 201910204282 A CN201910204282 A CN 201910204282A CN 109826946 A CN109826946 A CN 109826946A
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- Prior art keywords
- shift fork
- shift
- gearbox shifting
- prong
- dang
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Abstract
The present invention provides a kind of Liang Dang gearbox shifting mechanisms, it include: shift motor, shaft coupling, worm shaft, shift fork, shift claw, displacement detection system and neutral position switch, wherein shift fork is equipped with rack gear and two grooves, rack gear worm gearing is realized self-locking, displacement detection system is connect with shift fork, for accurately obtain vehicle in gear state, neutral position switch includes elastomeric element and moving contact, moving contact elastomeric element effect under contact two grooves and between shift fork outer surface, for reliably judging whether vehicle is in neutral position state.The present invention realizes accurately, reliable vehicle shift, ensure that safety and the ride comfort of shift process, and structure is simple, it is convenient, low in cost to lay.
Description
Technical field
The present invention relates to mechanical transmission fields, and in particular to a kind of Liang Dang gearbox shifting mechanism.
Background technique
Two grades of gearbox AMT applied to electric vehicle are the progress automatic improvings in manual transmission.As reality
It now shifts gears the critical component of automation, AMT gearshift has great influence to shift operating accuracy and shift quality.According to
Power source is different, and AMT gearshift can be divided into electric controlling and engine driving, electrically controlled and hydraulically formula and electric-controlled pneumatic type, wherein electric controlling and engine driving
The Typical Representative of gearshift is motor gearshift.Since motor has zero speed starting, slow-speed of revolution high torque, high revolving speed permanent
The advantages that power and wider working range, motor gearshift are applied to automatic vehicle, especially pure electric vehicle more and more widely.
In the prior art, application No. is 201710405039.5 Chinese invention patent disclose one kind two keep off AMT it is automatic
Gearshift drives feed screw nut by direct current generator, shift fork side-to-side movement is driven, to realize the gear shift operation of gearbox.
This gearshift has the advantages that shift speed is fast, but mechanism amount of parts is more, and occupied space is big, higher cost.Shen
Number single electricity of pure electric automobile electric control mechanical type automatic speed variator please be disclosed for 201720848462.8 Chinese invention patent
Machine gearshift is equipped with three axially distributed annular grooves by shift motor connecting cylinder roll body on cylindrical roll body, inserts
It sets the shift lever in annular groove and is driven by annular groove and make axial movement completion gear shift operation.This gearshift is not only
Shift speed is fast, and structure is simple, but requires height to accuracy of grooves, and subtle location error will affect transmission positioning, and change is changed
Gear opportunity reduces smooth gear shifting.
Therefore, it is necessary to provide a kind of reliable transmission, accurate positioning, and structure is simple, it is convenient, low-cost to lay
AMT gearshift.
Summary of the invention
The purpose of the present invention is to provide a kind of Liang Dang gearbox shifting mechanisms, it is intended to solve transmission positioning in the prior art
Inaccurate, the problem of structure is complicated, higher cost, the technical solution adopted is as follows:
A kind of Liang Dang gearbox shifting mechanism, comprising: shift motor；Shaft coupling connects the motor shaft of shift motor；Worm screw
Axis connects shaft coupling；Shift fork, including shift fork head and shift fork pawl, shift fork head are equipped with rack segments, the first groove and the second groove, dial
It pitches pawl and is equipped with the first prong and the second prong, the spiral tooth engagement of rack segments and worm shaft；Shift gears claw, be set to the first prong and
Between second prong；Displacement detection system connects shift fork pawl；Neutral position switch, including elastomeric element interconnected and moving contact,
Moving contact is close under elastomeric element effect and contacts shift fork head outer surface.
Further, the wheel between cog equivalent friction angle of rack segments is greater than the lead angle of worm shaft, and the length of rack segments is greater than
The length of worm shaft.
Further, the first groove and the second groove opposite side are equipped with chamfering.
Further, shift claw is equipped with annular groove, and the width of annular groove is greater than the thickness of the first prong and the thickness of the second prong
Degree.
Further, shift claw is equipped with several rectangular teeths, and the thickness of rectangular teeth is identical.
Further, the quantity of rectangular teeth is 6.
Further, displacement detection system includes straight pin, bracket and angular transducer, and bracket one end is equipped with card slot, card
Slot is slidably connected with straight pin, and the bracket other end is equipped with elongate cylinder, and angular transducer connects elongate cylinder.
Further, elastomeric element is steel ball sub-assembly.
It further, further include sliding axle, shift fork head is equipped with through-hole, and sliding axle slides company through through-hole and with shift fork head
It connects.
Further, shift fork pawl is equipped at least two reinforcing ribs.
The beneficial effect of Liang Dang gearbox shifting provided by the invention mechanism is: being realized using rack gear worm gearing
It is self-locking, accurately obtained using displacement detection system vehicle in gear state, reliably judge whether vehicle is in using neutral position switch
Neutral position state realizes accurately, reliable vehicle shift, ensure that safety and the ride comfort of shift process, and structure letter
List, laying are convenient, low in cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is two gear gearbox shifting mechanism structure figures of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ", " the
Two " are used merely to facilitate description purpose, are not understood to indicate or imply relative importance or implicitly indicate technical characteristic
Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.
It should also be noted that, unless otherwise clearly defined and limited, term " setting ", " connected ", " connects " installation "
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
In order to illustrate technical solutions according to the invention, it is described in detail below in conjunction with specific accompanying drawings and embodiments.
A kind of Liang Dang gearbox shifting mechanism characterized by comprising shift motor 1；Shaft coupling 2 connects shift motor
1 motor shaft；Worm shaft 3 connects shaft coupling 2；Shift fork 4, including shift fork head and shift fork pawl, shift fork head are equipped with rack segments 41, the
One groove 42 and the second groove 43, shift fork pawl are equipped with the first prong 44 and the second prong 45, the spiral of rack segments 41 and worm shaft 3
Tooth engagement；Shift claw 5, is set between the first prong 44 and the second prong 45；Displacement detection system 6 connects shift fork pawl；Neutral gear
Switch 7, including elastomeric element interconnected and moving contact, moving contact is close under elastomeric element effect and contacts outside shift fork head
Surface.
As the further preferred of present embodiment, the wheel between cog equivalent friction angle of rack segments 41 is greater than leading for worm shaft 3
Journey angle, so that mechanism has self-locking function, the length of rack segments 41 is greater than the length of worm shaft 3.
As the further preferred of present embodiment, the first groove 42 and 43 opposite side of the second groove are equipped with chamfering, protect
Ride comfort when card shift.
As the further preferred of present embodiment, claw 5 of shifting gears is equipped with annular groove, and the width of annular groove is greater than the first prong 44
Thickness and the second prong 45 thickness, the working surface of the first prong 44 and the second prong 45 carries out high-frequency quenching processing, uses
There is enough intensity, rigidity and wearability in guarantee shift fork 4.
As the further preferred of present embodiment, claw 5 of shifting gears is equipped with several rectangular teeths, and the thickness of rectangular teeth is identical,
Shift fork 4 drives shift 5 bilateral reciprocation of claw, realizes gear shift operation.
As the further preferred of present embodiment, the quantity of rectangular teeth is 6.
As the further preferred of present embodiment, displacement detection system 6 includes straight pin 61, bracket 62 and angle sensor
Device 63,62 one end of bracket are equipped with card slot, and card slot is slidably connected with straight pin 61, and 62 other end of bracket is equipped with elongate cylinder, angle
Sensor 63 connects elongate cylinder, and shift fork 4 is mobile to drive bracket 62 to rotate, rotation angle by 63 real-time monitoring of angular transducer,
To the position of real-time monitoring shift fork 4, and then judge vehicle shifting state.
As the further preferred of present embodiment, elastomeric element is steel ball sub-assembly.When neutral position switch 7 is recessed in first
When slot 42 or the second groove 43, steel ball discharges so that neutral position switch power loss；When neutral position switch 7 is in the first groove 42 and second recessed
When between slot 43, steel ball compresses so that neutral position switch 7 must be electric, and thus whether detection vehicle is in neutral position state, plays safe guarantor
Shield effect.
It further include sliding axle 7 as the further preferred of present embodiment, shift fork head is equipped with through-hole, and sliding axle 7 is through logical
Kong Bingyu shift fork head is slidably connected.Usually sliding shaft cross section and through-hole are circle, and through-hole diameter is greater than sliding shaft cross section
Diameter is installed by clearance fit, and shift fork head can be slided along sliding axle 7.
As the further preferred of present embodiment, the shift fork pawl is equipped at least two reinforcing ribs, for reducing shift fork 4
Deformational displacement when stress suffered by lower section and shift.
The working principle of gearshift of the present invention: shift motor drives worm shaft, worm shaft by shaft coupling
It is meshed with the rack segments on shift fork head, the rotation of worm shaft is thus converted into the linear motion of rack segments, and then makes shift fork head
It is slided on sliding axle, shift fork pawl pushes shift claw to engage with the big pinion gear of two sides by prong, is switched to low speed respectively
Gear and top gear.When shift fork head slides on sliding axle, the holder pivots of displacement detection system, angular transducer acquisition are driven
Support angle signal, thus the displacement of real-time monitoring shift fork, obtain vehicle in shelves state, meanwhile, the moving contact of neutral position switch
Under the extruding of steel ball, contact respectively one of two grooves or between shift fork head outer surface, thus detect whether vehicle is in
Neutral position state.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above example
It is merely used to help understand method and its core concept of the invention.The above is only the preferred embodiment of the present invention, should refer to
Out, due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the ordinary skill people of the art
For member, without departing from the principle of the present invention, can also make it is several improve, retouching or variation, can also will be above-mentioned
Technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved design by invention and
Technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (10)
1. a kind of Liang Dang gearbox shifting mechanism characterized by comprising
Shift motor (1)；
Shaft coupling (2), connects the motor shaft of the shift motor (1)；
Worm shaft (3) connects the shaft coupling (2)；
Shift fork (4), including shift fork head and shift fork pawl, it is recessed that the shift fork head is equipped with rack segments (41), the first groove (42) and second
Slot (43), the shift fork pawl are equipped with the first prong (44) and the second prong (45), the rack segments (41) and the worm shaft (3)
Spiral tooth engagement；
It shifts gears claw (5), is set between first prong (44) and second prong (45)；
Displacement detection system (6) connects the shift fork pawl；
Neutral position switch (7), including elastomeric element interconnected and moving contact, the moving contact is under elastomeric element effect
It is close and contact shift fork head outer surface.
2. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that the wheel between cog of the rack segments (41) is worked as
The lead angle that angle of friction is greater than the worm shaft (3) is measured, the length of the rack segments (41) is greater than the length of the worm shaft (3)
Degree.
3. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that first groove (42) and described the
Two grooves (43) opposite side is equipped with chamfering.
4. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that the shift claw (5) is equipped with annular groove,
The width of the annular groove is greater than the thickness of first prong (44) and the thickness of second prong (45).
5. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that the shift claw (5) is equipped with several
The thickness of rectangular teeth, the rectangular teeth is identical.
6. Liang Dang gearbox shifting as claimed in claim 6 mechanism, which is characterized in that the quantity of the rectangular teeth is 6.
7. Liang Dang gearbox shifting as claimed in claim 6 mechanism, which is characterized in that the displacement detection system (6) includes
Straight pin (61), bracket (62) and angular transducer (63), described bracket (62) one end are equipped with card slot, the card slot and the circle
Pin (61) is slidably connected, and bracket (62) other end is equipped with elongate cylinder, and angular transducer (63) connection is described thin
Long cylinder.
8. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that the elastomeric element is steel ball combination
Part.
9. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that further include sliding axle (7), the shift fork
Head is equipped with through-hole, and the sliding axle (7) is slidably connected through the through-hole and with the shift fork head.
10. Liang Dang gearbox shifting as described in claim 1 mechanism, which is characterized in that the shift fork pawl is equipped at least two
Reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910204282.XA CN109826946A (en) | 2019-03-18 | 2019-03-18 | A kind of Liang Dang gearbox shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910204282.XA CN109826946A (en) | 2019-03-18 | 2019-03-18 | A kind of Liang Dang gearbox shifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826946A true CN109826946A (en) | 2019-05-31 |
Family
ID=66870336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910204282.XA Pending CN109826946A (en) | 2019-03-18 | 2019-03-18 | A kind of Liang Dang gearbox shifting mechanism |
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| CN (1) | CN109826946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251448A (en) * | 2021-12-09 | 2022-03-29 | 浙江华洋赛车股份有限公司 | Self-locking stepping gear shifting mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5832777A (en) * | 1996-11-19 | 1998-11-10 | Borg-Warner Automotive, Inc. | Electromechanical transmission control apparatus |
| DE102017125138A1 (en) * | 2016-10-27 | 2018-05-03 | Aisin Ai Co., Ltd. | Control device for vehicle transmission |
| CN208364760U (en) * | 2018-05-04 | 2019-01-11 | 东风商用车有限公司 | A kind of transmission neutral construction of switch |
| CN209977228U (en) * | 2019-03-18 | 2020-01-21 | 湖南中成动力科技有限公司 | Two keep off gearbox gearshift |
-
2019
- 2019-03-18 CN CN201910204282.XA patent/CN109826946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5832777A (en) * | 1996-11-19 | 1998-11-10 | Borg-Warner Automotive, Inc. | Electromechanical transmission control apparatus |
| DE102017125138A1 (en) * | 2016-10-27 | 2018-05-03 | Aisin Ai Co., Ltd. | Control device for vehicle transmission |
| CN208364760U (en) * | 2018-05-04 | 2019-01-11 | 东风商用车有限公司 | A kind of transmission neutral construction of switch |
| CN209977228U (en) * | 2019-03-18 | 2020-01-21 | 湖南中成动力科技有限公司 | Two keep off gearbox gearshift |
Non-Patent Citations (1)
| Title |
|---|
| 曹其新等, 上海交通大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251448A (en) * | 2021-12-09 | 2022-03-29 | 浙江华洋赛车股份有限公司 | Self-locking stepping gear shifting mechanism |
| CN114251448B (en) * | 2021-12-09 | 2024-03-22 | 浙江华洋赛车股份有限公司 | Self-locking stepping gear shifting mechanism |
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