CN202182174U

CN202182174U - Automobile electric gearshift mechanism

Info

Publication number: CN202182174U
Application number: CN2011202740303U
Authority: CN
Inventors: 冉昭; 伍彬; 王雪亮
Original assignee: Great Wall Motor Co Ltd
Current assignee: Honeycomb Transmission Technology Hebei Co Ltd
Priority date: 2011-07-31
Filing date: 2011-07-31
Publication date: 2012-04-04
Anticipated expiration: 2021-07-31

Abstract

The utility model relates to the technical field of transmissions in automobile manufacturing industry, especially an automobile electric gearshift mechanism, which comprises a gearshift motor (1) fixed to the casing of a transmission, a shift fork (3) fixed to a declutch shift shaft (2), a driving gear (5) of all gears rotatably arranged on an input shaft (4), and a driven gear (7) of all gears fixed to an output shaft (6) and engaged with the driving gear (5). A gear sleeve (8) arranged on the input shaft (4) is dialed by the shift fork (3) driven by the axial movement of the declutch shift shaft (2) within the gearshift stroke of the declutch shift shaft (2) so as to be selectively combined with the driving gear (5) of all gears for realizing the gear selection. When the rotation power outputted through the rotation power output end (10) of the gearshift motor (1) is directly applied on the declutch shift shaft (2) connected with the rotation power output end (10), the declutch shift shaft (2) is driven to move axially within the gearshift stroke of the declutch shift shaft (2). The automobile electric gearshift mechanism is simple in structure and low in cost. Due to the adoption of the automobile electric gearshift mechanism, during the power transmission process, the rotating speed of the motor is reduced and the gearshift active force is improved.

Description

The motorcar electric gearshift

Technical field

The utility model relates to automobile manufacture industry speed changer technical field, relates in particular to a kind of motorcar electric gearshift.

Background technique

At present, existingly adopt multi-stage gear, tooth bar or worm and gear structure to come transferring power as the gearshift of power source with motor more, in transferring power, the effect that has reduced motor speed, improved the gearshift active force when also having realized gearshift.A kind of AMT shift-selecting and changing actuating mechanism is disclosed like Chinese utility model patent CN 201836358U; Comprise block selecting motor, shift motor and actuator; Actuating device comprises choosing gearshift axle and selects selector fork; Select selector fork to be fixedly installed on the choosing gearshift axle, the block selecting motor is connected with choosing gearshift axle and drives choosing gearshift axle through gear pair and moves up and down along a choosing gearshift axis, and shift motor is connected with choosing gearshift axle through train of gearings and drives that selecting shifts gears spool selects the axis left rotation and right rotation of shifting gears around the edge.The employing of its structure, the transmission efficiency that has made full use of gear is high, be easy to characteristics such as processing and cost are lower, guaranteed good driving quality, and its speed of response efficient quick, and compact structure, transmission is efficient, cost is low.But drive mechanisms such as the multi-stage gear that adopts in the structure as above, tooth bar or worm and gear, the structure relative complex causes the increase of motor gearshift assembly integral volume, is unfavorable for the layout in the car load cabin.

The model utility content

Be to solve the deficiency that exists in the existing technology, the utility model provides a kind of simple in structure, motorcar electric gearshift that cost is low, its in transferring power, the effect that has reduced motor speed, improved the gearshift active force when also having realized gearshift.

For realizing above-mentioned purpose; The motorcar electric gearshift of the utility model; Comprise the shift motor that is fixed on the mission case, be fixed on shift fork on the declutch shift shaft, the rotatable driving gear that is arranged on each gear on the input shaft, be fixed on the driven gear of each gear that links to each other with the driving gear engagement on the output shaft; Under described shift fork moving axially in declutch shift shaft gearshift stroke drives; Stirring the tooth cover that is arranged on the input shaft optionally combines the realization gear to choose with the driving gear of each gear; When the rotating power of the rotating power output terminal of described shift motor was applied directly on the coupled declutch shift shaft, this declutch shift shaft moved along its axis in the gearshift stroke.

As the further qualification to aforesaid way, described declutch shift shaft is connected for screwing with the rotating power output terminal of shift motor.

As the further qualification to aforesaid way, the power bearing end of described declutch shift shaft is provided with screw thread, and the rotating power output terminal of shift motor is provided with the tapped hole with screw-thread fit.

Adopt technique scheme, the rotating power output terminal of shift motor directly links to each other with declutch shift shaft, and the two screws continuous specifically; By shift fork declutch shift shaft is applied the restraint of axial rotation, the rotating power output terminal that impels shift motor when rotated, and the act of operation of only screwing or unscrewing between the declutch shift shaft; And because shift motor and speed changer are fixed; Force declutch shift shaft when screwing or unscrew, only can move axially, and then drive shift fork and realize the gearshift action along himself axis, its effective simplification the structure of shifting power transfer mechanism; Realize the substantivity that shifting power transmits, reduced the output speed of shift motor simultaneously.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify:

Fig. 1 is the overall structure schematic representation of the utility model when neutral gear position;

Fig. 2 is the linkage structure schematic representation under the utility model one retaining shifting state.

Among the figure:

1, shift motor; 2, declutch shift shaft; 3, shift fork; 4, input shaft; 5, driving gear; 51, a retaining driving gear; 52, two retaining driving gears; 6, output shaft; 7, driven gear; 71, a retaining driven gear; 72, two retaining driven gears; 8, tooth cover; 91, a retaining combines tooth; 92, two retainings combine tooth; 10, rotating power output terminal.

Embodiment

The motorcar electric gearshift of the utility model; Its main improvement is on the basis of prior electric gearshift structure; Power transmission mechanism when simplifying shift motor 1 shift fork axle 2 between the two, in concrete design, make the rotating power of the rotating power output terminal of shift motor 1 be applied directly to its declutch shift shaft that directly links to each other 2 on; Declutch shift shaft 2 is axially moved along it in the gearshift stroke, and the wherein a kind of structure in the face of the utility model is described below down:

As shown in Figure 1ly know; The motorcar electric gearshift of the utility model; Comprise the shift motor 1 that is fixed on the mission case, be fixed on shift fork 3 on the declutch shift shaft 2, the rotatable driving gear 5 that is arranged on each gear on the input shaft 4, be fixed on the driven gear 7 of each gear that links to each other with driving gear 5 engagements on the output shaft 6; Wherein, The driven gear 7 and the structure of shift fork 3 that are fixed on driving gear 5 on the input shaft 4, are fixed on the output shaft 6 all adopt existing linkage structure, and for example shown in the figure, input shaft 4 all is arranged in the mission case (not shown) with output shaft 6; Wherein driving gear 5 is made up of the driving gear of two gears; Be respectively a retaining driving gear 51, two and keep off driving gears 52, these two gear driving gears are through needle bearing and 4 rotatable linking to each other of input shaft, but the two relative input shaft 4 can not move axially; Be provided with a retaining fixing with a retaining driving gear 51 and that can rotate synchronously in the inboard of a retaining driving gear 51 and combine tooth 91; Be provided with two retainings fixing with two retaining driving gears 52 and that can rotate synchronously in the inboard of two retaining driving gears 52 and combine tooth 92; Combine tooth 91 and two retainings to combine to be fixed with on the input shaft between the tooth 92 tooth cover internal component at a retaining; Outside tooth cover internal component, be set with tooth cover 8; Tooth cover 8 overlaps to mesh between the internal component with tooth and links to each other, and can rotate synchronously, and tooth cover 8 can move relative to its internal component along the axial direction of input shaft 4.

Be fixed with driven gear 7 on the output shaft 6, the driven gear 7 in the present embodiment comprises a retaining driven gear 71 and the two retaining driven gears 72 with a retaining driving gear 51 and the 52 corresponding engagements of two retaining driving gears.

Pincers are equipped with shift fork 3 in the outside of tooth cover 8, and two arm clamps of shift fork 3 are in the groove of tooth cover 8 outsides, and this clamp makes shift fork 3 relative teeth covers 8 not overlap 8 outside grooves along tooth and rotates, and can only stir tooth cover 8 axially moving along input shaft.

The force side of shift fork 3 is fixedly connected with declutch shift shaft 2; The parallel axes of declutch shift shaft 2 and input shaft 4, output shaft 6; The power bearing end of declutch shift shaft 2 is provided with screw thread, screws through screw thread and is connected with the rotating power output terminal 10 of shift motor 1 on being fixed on mission case.

When neutral, as shown in Figure 1, tooth cover 8 is not connected with the combination tooth of the driving gear of any gear, and at this moment, a retaining driving gear 51 and two keeps off driving gears 52 relative input shafts 4 and do not rotate, and the power of input shaft does not pass to output shaft, and the output shaft rotating speed is zero.

When a retaining is chosen, know that by shown in Figure 2 shift motor 1 obtains back current and rotates counterclockwise; Because being connected of declutch shift shaft 2 and shift fork 3, the limit rotation that shift fork 3 receives tooth cover 8 can unscrew declutch shift shaft 2 with rotating power output terminal 10 under the effect of shift motor 1 rotating force; Because shift motor 1 is fixed on the mission case, force declutch shift shaft 2 to drive shift fork 3 to left movement, shift fork 3 is stirred tooth cover 8 and is combined tooth 91 to combine with a retaining; Because tooth cover internal component and input shaft 4 are connected, tooth cover 8 rotates with input shaft 4 synchronously, and this moment, tooth cover 8 combined tooth 91 to mesh with a retaining; Therefore; Tooth cover 8 can drive a retaining driving gear 51 rotations, and then a retaining driven gear 71 that drives with a retaining driving gear 51 engagements rotates, and output shaft 6 rotates and outputs power.

Carrying out two retainings when choosing; Choose difference with a retaining and be motor counter-rotating this moment; Declutch shift shaft 2 is screwed with rotating power output terminal 10 under the effect of shift motor 1 rotating force, and then drives shift fork 3 and stir tooth cover 8 and combines tooth 92 combinations with two retainings, keeps off the output of power when choosing to realize two.

Claims

1. motorcar electric gearshift; Comprise the shift motor (1) that is fixed on the mission case, be fixed on shift fork (3) on the declutch shift shaft (2), the rotatable driving gear (5) that is arranged on each gear on the input shaft (4), be fixed on the driven gear (7) of each gear that links to each other with driving gear (5) engagement on the output shaft (6); Under described shift fork (3) moving axially in declutch shift shaft (2) gearshift stroke drives; Stirring the tooth cover (8) that is arranged on the input shaft (4) optionally combines the realization gear to choose with the driving gear (5) of each gear; It is characterized in that: the rotating power of the rotating power output terminal (10) of described shift motor (1) is applied directly to coupled declutch shift shaft (2) last time, and this declutch shift shaft (2) moves along its axis in the gearshift stroke.

2. motorcar electric gearshift according to claim 1 is characterized in that: described declutch shift shaft (2) is connected for screwing with the rotating power output terminal of shift motor (1).

3. motorcar electric gearshift according to claim 2 is characterized in that: the power bearing end of described declutch shift shaft (2) is provided with screw thread, and the rotating power output terminal (10) of shift motor (1) is provided with the tapped hole with screw-thread fit.