CN203384341U - Gearbox of hybrid or pure electric vehicle - Google Patents

Gearbox of hybrid or pure electric vehicle Download PDF

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Publication number
CN203384341U
CN203384341U CN201320451510.1U CN201320451510U CN203384341U CN 203384341 U CN203384341 U CN 203384341U CN 201320451510 U CN201320451510 U CN 201320451510U CN 203384341 U CN203384341 U CN 203384341U
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CN
China
Prior art keywords
barrier film
cover
planet row
pusher
blocking dish
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320451510.1U
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Chinese (zh)
Inventor
曾洁
Original Assignee
曾洁
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Filing date
Publication date
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Priority to CN201320451510.1U priority Critical patent/CN203384341U/en
Application granted granted Critical
Publication of CN203384341U publication Critical patent/CN203384341U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a gearbox of a hybrid or pure electric vehicle. The gearbox comprises a box body, a connecting sleeve, a first planetary line and a second planetary line, wherein the connecting sleeve, the first planetary line and the second planetary line are arranged in the box body in sequence from a front end cover to a rear end cover; an input shaft penetrates through the front end cover, extends into the box body and is connected with the center of the connecting sleeve, the axle center of the sun gear of the first planetary line and the axle center spline of the sun gear of the second planetary line respectively; the planet wheel axle of the second planetary line is connected through a rotating arm; an output shaft coaxial with the input shaft is fixed on the rotating arm and penetrates through the rear end cover; one end of the planet wheel axle of the first planetary line is mutually connected with the gear ring of the second planetary line, and the other end of the planet wheel axle of the first planetary line and the connecting sleeve are provided with a first braking device; the box body and the gear ring of the first planetary line are provided with a second braking device; the box body and the gear ring of the second planetary line are provided with a third braking device. The gearbox provided by the utility model is simple and compact in structure, low in cost, quick in gear shifting response, high in reliability and efficiency and low in gear shifting energy consumption.

Description

The gearbox of mixed power or pure electric automobile
Technical field
The utility model relates to automobile technical field, relates in particular to the gearbox of a kind of mixed power or pure electric automobile.
Background technique
In electric motor car, whether aspect the application machine speed change, businessman can not apply gearbox and low, simple in structure titled with cost with electric motor car, and electric motor car makes gearbox become " scrap iron ".They have covered that existing electric motor car starting current is large, the low speed electric current large, it is unable to climb, high speed do not add, power consumption is excessive fully and have exported and can not change moment of torsion with road condition change because weighing, and cause the heavy damage to motor, storage battery and controller.The application of a large amount of overcurrents makes electric motor car become chicken and eats soya bean-gulp down by force, and the operation conditions that this is bad and a large amount of outputs even can not cause that high level should improved cognition and attention, to electric automobiles, bring sad and helpless.The simple theorem of gearbox is: " be applicable to the Vehicle Driving Cycle change in resistance, change on demand moment of torsion and rotating speed, realize neutral, advance and fall back." electric motor car is to be unable to do without this fundamental theorem, people are needed is performance, and electric motor car wants mechanical speed change cry day high urgently to be resolved hurrily, and a new transmission technology is as be applied, and who also buys the electric motor car can't walk any longer?
Existing mixed power or pure electric automobile transmission system exist that gearshift difficulty, impact are high, volume reaches greatly the problem that cost is high.Therefore a kind of gearbox of shifting gears the electric motor car that response is rapid, practical, reliability strong, the gearshift energy consumption is little, efficiency is high of research invention extremely is necessary.
The model utility content
The utility model main purpose is to provide a kind of simple in structure, gearbox that gearshift responds mixed power rapidly or pure electric automobile, and secondary objective is to make this gearbox designs compactness.
To achieve these goals, a kind of technical solution scheme the utility model proposes is: the gearbox of a kind of mixed power or pure electric automobile comprises casing, connecting sleeve, the first planet row and the second planet row; Described casing comprises side box wall, front cover and rear end cover, the two ends that are covered on side box wall of front cover and rear end cover adaptation; Set gradually connecting sleeve, the first planet row and the second planet row along front cover to rear end cover in casing; One input shaft stretches in casing through front cover, and respectively at the axle center spline joint of the sun gear of the axle center of the sun gear of the center of connecting sleeve, the first planet row and the second planet row; Be provided with bearing on the planet wheel shaft of the second planet row, be connected with pivoted arm on bearing, be fixed with the output shaft with the input shaft coaxial line on pivoted arm, output shaft is set in rear end cover; The gear ring of the wheel shaft of the planet wheel of the first planet row and the second planet row interconnects, and the other end and connecting sleeve are provided with the first braking device; The gear ring of described casing and the first planet row is provided with the second braking device, and the gear ring of casing and the second planet row is provided with the 3rd braking device.
Wherein, described the first braking device comprises a plurality of the first inner attrition pieces on the first pusher, thrust-bearing, platen, connecting sleeve and replaces corresponding a plurality of the first outside friction discs with the first inner attrition piece; The first pusher is arranged on front cover, thrust-bearing is socketed on input shaft, be connected with respectively the first pusher and platen on thrust-bearing, the first outside friction disc near front cover is connected with platen, the first pushers thrust-bearing, platen drives the first outside friction disc and moves, the first outside friction disc and the first inner attrition piece friction catch.
Wherein, described the first pusher comprises that the barrier film actuator comprises barrier film and the first blocking dish, the outside of barrier film connects the first blocking dish, being arranged on front cover that barrier film is airtight forms the barrier film bubble and leaves the first medium inlet opening, be provided with the first Returnning spring on the first blocking dish, when medium enters the barrier film bubble via external pressure by the medium inlet opening, the barrier film bubble is heaved and is driven the first blocking dish motion, when external pressure disappears, the first Returnning spring drives the first blocking dish and resets.
Wherein, the gear ring outside that described the second braking device comprises the second pusher, be slidably mounted on a plurality of the second outside friction discs on described side box wall and be installed on the first planet row replaces the second corresponding inner attrition piece, second pushers the second outside friction disc and the second inner attrition piece friction catch with the second outside friction disc; The gear ring outside that described the 3rd braking device comprises the 3rd pusher, be slidably mounted on a plurality of the 3rd outside friction discs on described side box wall and be installed on the second planet row replaces the 3rd corresponding inner attrition piece, the 3rd pushers the 3rd outside friction disc and the 3rd inner attrition piece friction catch with the 3rd outside friction disc.
Wherein, described the second pusher is arranged on front cover, comprise barrier film and the second blocking dish, the outside of barrier film connects the second blocking dish, and being arranged on front cover that barrier film is airtight forms the barrier film bubble and leave the second medium inlet opening, is provided with the second Returnning spring on the second blocking dish, when medium enters the barrier film bubble via external pressure by the second medium inlet opening, the barrier film bubble is heaved and is driven the second blocking dish motion, and when external pressure disappears, the second Returnning spring drives the second blocking dish and resets; Described the 3rd pusher is arranged on front cover, comprise barrier film and the 3rd blocking dish, the outside of barrier film connects the 3rd blocking dish, being arranged on rear end cover that barrier film is airtight forms the barrier film bubble and leaves the 3rd medium inlet opening, be provided with the 3rd Returnning spring on the 3rd blocking dish, when medium enters the barrier film bubble via external pressure by the 3rd medium inlet opening, the barrier film bubble is heaved and is driven the 3rd blocking dish motion, when external pressure disappears, the 3rd Returnning spring drives the 3rd blocking dish and resets.
Wherein, the wheel shaft of the planet wheel of described the first planet row is connected by angular contact ball bearing with the gear ring of the second planet row, and angular contact ball bearing is fixed on described side box wall.
Wherein, described pivoted arm is connected by axle bearing with input shaft.
The beneficial effects of the utility model are: be different from the mixed power of prior art or the gearbox of pure electric automobile, it is high that gearshift is difficult, impact is high, volume reaches greatly cost, the gearbox of mixed power of the present utility model or pure electric automobile, adopt input shaft, output shaft, the first planet row, the second planet row, arrestment mechanism to cooperatively interact, simple in structure, compact, so cost is low, the gearshift response is rapid, and reliability is high, the gearshift energy consumption is little, efficiency is high.
The accompanying drawing explanation
The gearbox designs schematic diagram that Fig. 1 is mixed power of the present utility model or pure electric automobile.
In figure: 1, input shaft; 2, input end oil sealing; 3, input end bearing; 4, compressing tablet in the barrier film of the first pusher; 5, first medium inlet opening; 6, the first blocking dish; 7, the first Returnning spring back-up ring; 8, the first row star-wheel; 9, second medium inlet opening; 10, front cover; 11, the barrier film of the second pusher; 12, the outer compressing tablet of the barrier film of the second pusher; 13, the second blocking dish; 14, the second Returnning spring; 15, the second Returnning spring back-up ring; 16, the second inner attrition piece; 17, the second outside friction disc; 18, the gear ring of the first planet row; 19, casing; 20, the outer compressing tablet of the barrier film of the 3rd pusher; 21, the 3rd blocking dish; 22, the 3rd medium inlet opening; 23, the barrier film of the 3rd pusher; 24, compressing tablet lock screw; 25, compressing tablet in the barrier film of the 3rd pusher; 26, rear end cover; 27, output terminal bearing; 28, output shaft oil sealing; 29, output shaft; 30, axle bearing; 31, the sun gear of the second planet row; 32, the planet wheel shaft of the second planet row; 33, the second planet wheel; 34, the gear ring of the second planet row; 35, the 3rd Returnning spring; 36, the 3rd Returnning spring back-up ring; 37, the 3rd outside friction disc; 38, the 3rd inner attrition piece; 39, the planet wheel shaft of the first planet row; 40, the first inner attrition piece; 41, the first outside friction disc; 42, compressing tablet in the barrier film of the first pusher; 43, the first Returnning spring; 44, the barrier film of the first pusher; 45, the sun gear of the first planet row; 46, connecting sleeve; 47, thrust-bearing; 48, angular contact ball bearing; 49, link arm; 50, platen; 51, pivoted arm.
Embodiment
By describing technology contents of the present utility model, structure characteristics in detail, being realized purpose and effect; Below in conjunction with mode of execution and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, a kind of mixed power of present embodiment or the gearbox of pure electric automobile, comprise casing 19, connecting sleeve 46, the first planet row and the second planet row, the sun gear 45 of first planet row and sun gear 31 and a plurality of the second planet wheel 33 that a plurality of the first row star-wheel 8, the second planet rows comprise the second planet row are drawn together in the first planet package; Described casing 19 comprises side box wall, front cover 10 and rear end cover 26, the two ends that are covered on side box wall of front cover 10 and rear end cover 26 adaptations, and casing 19 is interior 26 sets gradually connecting sleeve 46, the first planet row and the second planet row along front cover 10 to rear end cover; One input shaft 1 stretches in casing 19 through front cover 10, and respectively at the axle center spline joint of the sun gear 31 of the axle center of the sun gear 45 of connecting sleeve 46 center, the first planet row and the second planet row, the planet wheel shaft 32 of the second planet row connects by pivoted arm 51, be fixed with the output shaft 29 with input shaft 1 coaxial line on pivoted arm 51, output shaft 29 is set in rear end cover 26; Planet wheel shaft 39 1 ends of the first planet row and the gear ring 34 of the second planet row interconnect, and the other end and connecting sleeve 46 are provided with the first braking device; The gear ring 18 of described casing 19 and the first planet row is provided with the second braking device; The gear ring 34 of casing 19 and the second planet row is provided with the 3rd braking device.The gearbox of mixed power of the present utility model or pure electric automobile, adopt input shaft 1, output shaft 29, the first planet row, the second planet row, arrestment mechanism to cooperatively interact, simple in structure, compact, so cost is low, the gearshift response is rapid, and reliability is high, the gearshift energy consumption is little, efficiency is high.
In the present embodiment, input shaft 1 is through after front cover 10, be provided with input end bearing 3 on front cover 10, to reduce the resistance rotated, be provided with input end oil sealing 2 simultaneously, as shown in fig. 1, certainly, generally also can on the rear end cover 26 through output shaft is arranged, be provided with output shaft oil sealing 28 and output terminal bearing 27.
This use is novel in concrete speed change, and when the first braking device, the second braking device and the 3rd braking device during all in releasing state, this gearbox is in neutral position state, and corresponding braking device is in braking state, corresponding adaptive gear.Illustrate, in the time of the 3rd break braking, the gear ring 34 of the second planet row is static with respect to casing, and the first planet is emptying to be turned, and the second planet row drives pivoted arm 51 and rotates, and pivoted arm 51 drives output shaft 29 and rotates, and is now a gear, is generally low gear; When second brake is braked, the gear ring 18 of the first planet row is static with respect to casing, because planet wheel shaft 39 1 ends of the first planet row and the gear ring 34 of the second planet row interconnect, so the planet wheel shaft 32 of transmission the second planet row rotates, the second planet row drives pivoted arm 51 and rotates, pivoted arm 51 drives output shaft 29 and rotates, and is now another gear, is generally the middling speed gear; When first break when braking, planet wheel shaft 39 lockings of connecting sleeve 46 and the first planet row, making the interior velocity ratio of this gearbox is 1:1, and the rotating speed of output shaft 29 is identical with the rotating speed of input shaft 1, is now a gear, and this gear is generally high gear.
In the present embodiment, described the first braking device comprises a plurality of the first inner attrition pieces 40 on the first pusher, thrust-bearing 47, platen 50, connecting sleeve 46 and replaces the first corresponding outside friction disc 41 with the first inner attrition piece 40; The first pusher is arranged on front cover, thrust-bearing 47 is socketed on input shaft 1, be connected with respectively the first pusher and platen 50 on thrust-bearing 47, the first outside friction disc 41 near front cover 10 is connected with platen 50, the first pushers thrust-bearing 47, platen 50 drives the first outside friction disc 41 and moves, the first outside friction disc 41 and the first inner attrition piece 40 friction catches, the first pusher in the present embodiment can be a kind of in electric pushrod, cylinder, electromagnetic force actuator or barrier film actuator, as long as can promote thrust-bearing 47; And a plurality of the first inner attrition pieces 40 on connecting sleeve 46 are generally that the arranged outside of connecting sleeve 46 has external tooth, be provided with the internal tooth of suitable engagement with it on the first inner attrition piece.
In one embodiment, described the first pusher comprises barrier film 44 and first blocking dish 6 of the first pusher, the outside of barrier film connects the first blocking dish 6, being arranged on front cover 10 that barrier film is airtight forms the barrier film bubble and leaves first medium inlet opening 5, be provided with the first Returnning spring 43 on the first blocking dish 6, when medium enters the barrier film bubble via external pressure by first medium inlet opening 5, the barrier film bubble is heaved and is driven the first blocking dish 6 motions, when external pressure disappears, the first Returnning spring 43 drives the first blocking dish 6 and resets, general the first Returnning spring 43 is arranged in the first Returnning spring back-up ring 7, the first Returnning spring back-up ring 7 is fixed on front cover 10.In the present embodiment, the barrier film 44 of the first pusher is fixed on front cover 10 by compressing tablet in the barrier film of the first pusher 4,42 and screw.
In the present embodiment, gear ring 18 outsides that described the second braking device comprises the second pusher, be slidably mounted on a plurality of the second outside friction discs 17 on described side box wall and be installed on the first planet row and the second outside friction disc 17 be corresponding the second inner attrition piece 16, the second pushers the second outside friction discs 17 and the second inner attrition piece 16 friction catches alternately; In like manner, the gear ring outside that described the 3rd braking device comprises the 3rd pusher, be slidably mounted on a plurality of the 3rd outside friction discs 37 on described side box wall and be installed on the second planet row replaces the 3rd corresponding inner attrition piece 38, the three pushers the 3rd outside friction discs 37 and the 3rd inner attrition piece 38 friction catches with the 3rd outside friction disc 37.Wherein, gear ring 18 arranged outside of the first planet row have external tooth, and the second inner attrition piece 16 is provided with the internal tooth be engaged with; Gear ring 34 arranged outside of the second planet row have external tooth, and the 3rd inner attrition piece 38 is provided with the internal tooth be engaged with.Second and third pusher in the present embodiment can be a kind of or combination in electric pushrod, cylinder, electromagnetic force actuator or barrier film actuator.
In one embodiment, described the second pusher is arranged on front cover 10, the barrier film 11 and the second blocking dish 13 that comprise the second pusher, the outside of the barrier film 11 of the second pusher connects the second blocking dish 13, being arranged on front cover 10 that barrier film 11 is airtight forms the barrier film bubble and leaves second medium inlet opening 9, be provided with the second Returnning spring 14 on the second blocking dish 13, when medium enters the barrier film bubble via external pressure by second medium inlet opening 9, the barrier film bubble is heaved and is driven the second blocking dish 13 motions, when external pressure disappears, the second Returnning spring 14 drives the second blocking dish 13 and resets, general the second Returnning spring 14 is arranged in the second Returnning spring back-up ring 15, the second Returnning spring back-up ring 15 is fixed on side box wall, and the barrier film 11 of the second pusher is fixed on front cover 10 by the compressing tablet lock screw by compressing tablet in the barrier film of the outer compressing tablet 12 of the barrier film of the second pusher and the second pusher, described the 3rd pusher is arranged on rear end cover 26, the barrier film 23 and the 3rd blocking dish 21 that comprise the 3rd pusher, the outside of barrier film 23 connects the 3rd blocking dish 21, being arranged on rear end cover 26 that barrier film 23 is airtight forms the barrier film bubble and leaves the 3rd medium inlet opening 22, be provided with the 3rd Returnning spring 35 on the 3rd blocking dish 21, when medium enters the barrier film bubble via external pressure by the 3rd medium inlet opening 22, the barrier film bubble is heaved and is driven the 3rd blocking dish 21 motions, when external pressure disappears, the 3rd Returnning spring 35 drives the 3rd blocking dish 21 and resets, general the 3rd Returnning spring 35 is arranged in the 3rd Returnning spring back-up ring 36, the 3rd Returnning spring back-up ring 36 is fixed on side box wall.The barrier film 23 of the 3rd pusher is fixed on rear end cover 26 by compressing tablet lock screw 24 by the outer compressing tablet 20 of the barrier film of compressing tablet 25, the 3rd pusher in the barrier film of the 3rd pusher.
In the various embodiments described above, the planet wheel shaft 39 of described the first planet row is connected by angular contact ball bearing 48 with the gear ring 34 of the second planet row, the planet wheel shaft 39 of the first planet row laterally is connected with angular contact ball bearing 48, and stretching out a link arm 49, the gear ring 34 of the second planet row vertically with angular contact ball bearing 48, is connected, angular contact ball bearing 48 is fixed on described side box wall, like this can by angular contact ball bearing 48 by the responsive to axial force of its first planet row and the second planet row to casing 19, improve lifetime of system of the present utility model and efficiency.
In the various embodiments described above, described pivoted arm 51 is connected by axle bearing 30 with input shaft 1, can improve the stable of whole system.
The foregoing is only embodiment of the present utility model; Not thereby limit the scope of the claims of the present utility model; Every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; Or directly or indirectly be used in other relevant technical fields; All in like manner be included in scope of patent protection of the present utility model.

Claims (7)

1. the gearbox of a mixed power or pure electric automobile; It is characterized in that, comprise casing, connecting sleeve, the first planet row and the second planet row; Described casing comprises side box wall, front cover and rear end cover, and the two ends that are covered on side box wall of front cover and rear end cover adaptation set gradually connecting sleeve, the first planet row and the second planet row along front cover to rear end cover in casing;
One input shaft stretches in casing through front cover, and respectively at the axle center spline joint of the sun gear of the axle center of the sun gear of the center of connecting sleeve, the first planet row and the second planet row, the planet wheel shaft of the second planet row sees through pivoted arm and connects, be fixed with the output shaft with the input shaft coaxial line on pivoted arm, output shaft is set in rear end cover; Wheel shaft one end of the planet wheel of the first planet row and the gear ring of the second planet row interconnect, and the other end and connecting sleeve are provided with the first braking device; The gear ring of described casing and the first planet row is provided with the second braking device; The gear ring of casing and the second planet row is provided with the 3rd braking device.
2. the gearbox of mixed power according to claim 1 or pure electric automobile, it is characterized in that, described the first braking device comprises a plurality of the first inner attrition pieces on the first pusher, thrust-bearing, platen, connecting sleeve and replaces corresponding a plurality of the first outside friction discs with the first inner attrition piece;
The first pusher is arranged on front cover, thrust-bearing is socketed on input shaft, be connected with respectively the first pusher and platen on thrust-bearing, the first outside friction disc near front cover is connected with platen, the first pushers thrust-bearing, platen drives the first outside friction disc and moves, the first outside friction disc and the first inner attrition piece friction catch.
3. the gearbox of mixed power according to claim 2 or pure electric automobile, it is characterized in that, described the first pusher comprises barrier film and the first blocking dish, the outside of barrier film connects the first blocking dish, being arranged on front cover that barrier film is airtight forms the barrier film bubble and leaves the first medium inlet opening, be provided with the first Returnning spring on the first blocking dish, when medium enters the barrier film bubble via external pressure by the medium inlet opening, the barrier film bubble is heaved and is driven the first blocking dish motion, when external pressure disappears, the first Returnning spring drives the first blocking dish and resets.
4. the gearbox of mixed power according to claim 1 or pure electric automobile, it is characterized in that, the gear ring outside that described the second braking device comprises the second pusher, be slidably mounted on a plurality of the second outside friction discs on described side box wall and be installed on the first planet row replaces the second corresponding inner attrition piece, second pushers the second outside friction disc and the second inner attrition piece friction catch with the second outside friction disc;
The gear ring outside that described the 3rd braking device comprises the 3rd pusher, be slidably mounted on a plurality of the 3rd outside friction discs on described side box wall and be installed on the second planet row replaces the 3rd corresponding inner attrition piece, the 3rd pushers the 3rd outside friction disc and the 3rd inner attrition piece friction catch with the 3rd outside friction disc.
5. the gearbox of mixed power according to claim 4 or pure electric automobile, it is characterized in that, described the second pusher is arranged on front cover, comprise barrier film and the second blocking dish, the outside of barrier film connects the second blocking dish, being arranged on front cover that barrier film is airtight forms the barrier film bubble and leaves the second medium inlet opening, be provided with the second Returnning spring on the second blocking dish, when medium enters the barrier film bubble via external pressure by the second medium inlet opening, the barrier film bubble is heaved and is driven the second blocking dish motion, when external pressure disappears, the second Returnning spring drives the second blocking dish and resets,
Described the 3rd pusher is arranged on rear end cover, comprise barrier film and the 3rd blocking dish, the outside of barrier film connects the 3rd blocking dish, being arranged on rear end cover that barrier film is airtight forms the barrier film bubble and leaves the 3rd medium inlet opening, be provided with the 3rd Returnning spring on the 3rd blocking dish, when medium enters the barrier film bubble via external pressure by the 3rd medium inlet opening, the barrier film bubble is heaved and is driven the 3rd blocking dish motion, when external pressure disappears, the 3rd Returnning spring drives the 3rd blocking dish and resets.
6. according to the gearbox of the described mixed power of claim 1-5 any one or pure electric automobile, it is characterized in that, the wheel shaft of the planet wheel of described the first planet row is connected by angular contact ball bearing with the gear ring of the second planet row, and angular contact ball bearing is fixed on described side box wall.
7. according to the gearbox of the described mixed power of claim 1-5 any one or pure electric automobile, it is characterized in that, described pivoted arm is connected by axle bearing with input shaft.
CN201320451510.1U 2013-07-26 2013-07-26 Gearbox of hybrid or pure electric vehicle Expired - Fee Related CN203384341U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320451510.1U CN203384341U (en) 2013-07-26 2013-07-26 Gearbox of hybrid or pure electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320451510.1U CN203384341U (en) 2013-07-26 2013-07-26 Gearbox of hybrid or pure electric vehicle

Publications (1)

Publication Number Publication Date
CN203384341U true CN203384341U (en) 2014-01-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320451510.1U Expired - Fee Related CN203384341U (en) 2013-07-26 2013-07-26 Gearbox of hybrid or pure electric vehicle

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899719A (en) * 2014-04-13 2014-07-02 福建亚南电机有限公司 Two-gear gearbox of pure electric sweeper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899719A (en) * 2014-04-13 2014-07-02 福建亚南电机有限公司 Two-gear gearbox of pure electric sweeper

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140108

Termination date: 20160726