CN209705260U - A kind of gearshift of gearbox - Google Patents
A kind of gearshift of gearbox Download PDFInfo
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- CN209705260U CN209705260U CN201920040060.4U CN201920040060U CN209705260U CN 209705260 U CN209705260 U CN 209705260U CN 201920040060 U CN201920040060 U CN 201920040060U CN 209705260 U CN209705260 U CN 209705260U
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Abstract
The utility model provides a kind of gearshift of gearbox, it include: synchronizer, shift fork, shift fork guiding axis, ball-screw, ball nut, worm gear, worm screw and servo motor, wherein, the output shaft of the servo motor is connect with the worm screw, and the worm screw connect with the worm-drive, and the worm gear is fixedly installed on the ball-screw, the ball nut and the ball-screw are cooperatively connected, the ball nut is fixedly installed in one end of the shift fork, by the cooperation of the ball nut and ball-screw, realizes the longitudinal movement of the shift fork；The other end of the shift fork, which is inlayed, to be set in the fork slot of the synchronizer, and the synchronization ring of the synchronizer is driven to vertically move, and realization is respectively cooperating with transmission gear, completes shift.The apparatus structure of the utility model is compact, it is self-locking, can accurately control, realize shift transformation.
Description
Technical field
The utility model belongs to gearbox technical field, and in particular to a kind of gearshift of gearbox.
Background technique
Automobile industry is the mainstay industry of Chinese national economy, is played in national economy and social development important
Effect.Breach of the new-energy automobile as China's automobile industry transition and upgrade was obtaining breakthrough development in recent years.Root
Develop according to current technology, the driving method that electric car generallys use is that motor is fixed speed ratio speed reducer.Fixed speed ratio
Electric vehicle is generally relatively low to the utilization rate of motor, promotes motor to be in low efficiency region operation, not only wastes motor but also drop
Low mileage travelled.
It is required to meet electric vehicle climbing, high speed and acceleration etc., motor not only will provide higher operation in invariable power area
Speed, and high instantaneous torque is provided in permanent torque area.In order to improve motor operation efficiency, increase course continuation mileage, more great Cheng
Its superiority is played on degree, electric car should multiple gearizations.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of gearshift of gearbox, compact-sized, self-locking,
It can accurately control.
To solve the above problems, the technical solution adopted in the utility model are as follows:
A kind of gearshift of gearbox, comprising: synchronizer, shift fork, shift fork guiding axis, ball-screw, ball nut, snail
Wheel, worm screw and servo motor, wherein
The output shaft of the servo motor is connect with the worm screw, for driving the worm screw to rotate；
The worm screw connect with the worm-drive, and the worm gear is fixedly installed on the ball-screw, for driving
Ball screw turns；
The ball nut and the ball-screw are cooperatively connected, and the ball nut is fixedly installed in the one of the shift fork
End, by the cooperation of the ball nut and ball-screw, realizes the longitudinal movement of the shift fork；
Circular hole is provided in the middle part of the shift fork, the shift fork guiding axis is disposed through in the circular hole, the shift fork
Guiding axis and the ball-screw realize the positioning and guiding of the shift fork jointly；
The other end of the shift fork, which is inlayed, to be set in the fork slot of the synchronizer, and the synchronization ring of the synchronizer is driven
Longitudinal movement, realization are respectively cooperating with transmission gear, complete shift.
Further, the direction of rotation of the servo motor includes: to rotate clockwise and rotate counterclockwise.
Further, the output shaft is connect with the worm screw using flat key.
Further, the both ends of the worm screw are fixed on shell by bearing.
Further, the both ends of the ball-screw are fixed on shell by bearing.
Further, the ball nut is fixedly installed on the shift fork by hexagon socket head cap screw.
Further, the transmission gear includes: first gear and second gear, and power input shaft passes through the first gear
It is connect with the second gear with the synchronizer.
Further, the connection type of the power input shaft and the synchronizer is spline.
Further, the both ends of the power input shaft are fixed on shell by bearing.
Further, positioning spigot is provided between the servo motor and shell.
The utility model has the beneficial effects that: the apparatus structure of the utility model it is compact, it is self-locking, can accurately control,
Realize shift transformation.
Detailed description of the invention
Fig. 1 is the utility model gearshift overall structure diagram.
Wherein, 1, synchronizer；2, second gear；3, shift fork guiding axis；4, bearing；5, ball-screw；6, hexagon socket head cap screw；
7, ball nut；8, shift fork；9- servo motor；10, worm screw；11, worm gear；12, first gear.
Specific embodiment
In order to enable those skilled in the art to better understand the technical solutions of the present invention, combined with specific embodiments below
The utility model is described in further detail.It note that the embodiments described below is exemplary, be only used for explaining this
Utility model, and should not be understood as limiting the present invention.Particular technique or condition are not specified in embodiment, according to this
Technology or conditions described in document in field are carried out according to product description.Production is not specified in agents useful for same or instrument
Manufacturer person, being can be with conventional products that are commercially available.
One aspect according to the present utility model, the utility model provide a kind of gearshift of gearbox, and Fig. 1 is this
Utility model gearshift overall structure diagram, as shown in the figure, comprising: synchronizer, shift fork, shift fork guiding axis, ball-screw,
Ball nut, worm gear, worm screw and servo motor, wherein the output shaft of the servo motor is connect with the worm screw, for driving
The worm screw rotation；The worm screw connect with the worm-drive, and the worm gear is fixedly installed on the ball-screw, is used for
Drive ball screw turns；The ball nut and the ball-screw are cooperatively connected, and the ball nut is fixedly installed in institute
The one end for stating shift fork the longitudinal movement of the shift fork is realized by the cooperation of the ball nut and ball-screw；The shift fork
Middle part be provided with circular hole, the shift fork guiding axis is disposed through in the circular hole, the shift fork guiding axis and the ball
Lead screw realizes the positioning and guiding of the shift fork jointly；The other end of the shift fork inlays the fork slot for being set to the synchronizer
It is interior, drive the synchronization ring of the synchronizer to vertically move, realization is respectively cooperating with transmission gear, completes shift.
Specific embodiment according to the present utility model, the direction of rotation of the servo motor include: to rotate clockwise and inverse
Hour hands rotation, is provided with positioning spigot between the servo motor and shell, plays the role of positioning, sealing.
Specific embodiment according to the present utility model, the output shaft are connect with the worm screw using flat key.
The both ends of specific embodiment according to the present utility model, the worm screw are fixed on shell by bearing；The rolling
The both ends of ballscrew are fixed on shell by bearing；The ball nut is fixedly installed in the shift fork by hexagon socket head cap screw
On.
Specific embodiment according to the present utility model, the transmission gear include: first gear and second gear, and power is defeated
Enter axis to connect across the first gear and the second gear with the synchronizer, the power input shaft and the synchronizer
Connection type be spline, the both ends of the power input shaft are fixed on shell by bearing.
One power input shaft of embodiment passes through first gear and second gear and synchronizer is connected with spline, motor output shaft
It is connect with power input shaft with spline, motor power is transmitted to synchronizer, input shaft and first gear and second gear by input shaft
Needle bearing is housed, the both ends of power input shaft are mounted on shell by bearing between gear.One end of shift fork, which is embedded in, to be synchronized
It in the fork slot of device, is connected between the other end and ball nut with hexagon socket head cap screw, middle part is provided with circular hole and matches with shift fork guiding axis
It closes, the both ends of shift fork guiding axis are fixed on shell.Ball nut and ball-screw cooperate, and the both ends of ball-screw pass through bearing
It is mounted on shell.Shift fork guiding axis and ball-screw realize positioning to shift fork, guiding role jointly.Worm gear is mounted on ball
It is connected on lead screw and with spline, worm and wheel engagement, the both ends of worm screw are mounted on shell by bearing, in servo motor use
Hex bolts is mounted on shell, and the output shaft of servo motor and worm screw are connected with flat key.It is equipped between servo motor and shell
Positioning spigot can play the role of positioning, sealing.Worm gear and worm screw have self-locking property, can prevent off-gear.
One gear: when shift, control system controls servo motor rotation driving worm screw, and worm and wheel engagement, which is realized to slow down, to be increased
After torsion, driving force is transmitted on ball-screw, ball-screw and ball nut cooperate, and convert straight line for the driving force of rotation
Driving force, and then push shift fork mobile towards the direction of first gear, shift fork pushes the tooth of synchronizer to cover also towards first gear
Direction it is mobile, since, there are rotational speed difference, tooth set passes through the conical surface when compressing synchronous ring between the tooth set and first gear of synchronizer
Frictional force promotes revolving speed to reach unanimity, and when revolving speed is identical, tooth set spline can smoothly enter into a gear mesh regional, and servo motor stops
The process of a gear shift is so far completed in work.At this point, the transfer route of automobile power are as follows: driving motor → input shaft → synchronization
Device → first gear → differential mechanism → wheel, second gear free-runing operation.Since worm gear and worm screw have self-locking performance, can prevent same
It walks device and first gear is detached from.
Second gear: shift process is similar with a gear shift, be distinguished as the direction of rotation of servo motor with when a gear shift on the contrary,
The tooth set of shift fork and synchronizer is mobile towards the direction of second gear, and the tooth set spline of synchronizer enters second gear mesh regional.
The transfer route of automobile power are as follows: driving motor → input shaft → synchronizer → second gear → differential mechanism → wheel, a gear tooth
Take turns free-runing operation.Also due to worm gear and worm screw have self-locking performance, synchronizer and second gear can be prevented to be detached from.
Neutral gear: when the tooth set of synchronizer is also not in second gear mesh regional, but to be in not in a gear mesh regional
When middle position, synchronizer free-runing operation, power is not transferred to wheel.Since worm gear and worm screw have a self-locking performance, when shift
Servo motor is needed to run, shift process is opposite with a gear, second gear.
In summary the apparatus structure of the utility model it is compact, it is self-locking, can accurately control, realize shift transformation.
In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result,
The feature of " first ", " second " can explicitly or implicitly include one or more of the features.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Identical embodiment or example need not be directed to by stating.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.In addition, without conflicting with each other, this field
Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples
Combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
It inside can make changes, modifications, alterations, and variations to the above described embodiments, at the same time, for those skilled in the art, foundation
The thought of the application, there will be changes in the specific implementation manner and application range.
Claims (10)
1. a kind of gearshift of gearbox characterized by comprising synchronizer, shift fork, shift fork guiding axis, ball-screw, rolling
Pearl nut, worm gear, worm screw and servo motor, wherein
The output shaft of the servo motor is connect with the worm screw, for driving the worm screw to rotate；
The worm screw connect with the worm-drive, and the worm gear is fixedly installed on the ball-screw, for driving ball
Lead screw rotation；
The ball nut and the ball-screw are cooperatively connected, and the ball nut is fixedly installed in one end of the shift fork,
By the cooperation of the ball nut and ball-screw, the longitudinal movement of the shift fork is realized；
Circular hole is provided in the middle part of the shift fork, the shift fork guiding axis is disposed through in the circular hole, the shift fork guiding
Axis and the ball-screw realize the positioning and guiding of the shift fork jointly；
The other end of the shift fork, which is inlayed, to be set in the fork slot of the synchronizer, drives the synchronization ring of the synchronizer longitudinal
Mobile, realization is respectively cooperating with transmission gear, completes shift.
2. the apparatus according to claim 1, which is characterized in that the direction of rotation of the servo motor includes: rotation clockwise
Turn and rotates counterclockwise.
3. the apparatus according to claim 1, which is characterized in that the output shaft is connect with the worm screw using flat key.
4. the apparatus according to claim 1, which is characterized in that the both ends of the worm screw are fixed on shell by bearing.
5. the apparatus according to claim 1, which is characterized in that the both ends of the ball-screw are fixed on shell by bearing
On.
6. the apparatus according to claim 1, which is characterized in that the ball nut is fixedly installed in by hexagon socket head cap screw
On the shift fork.
7. the apparatus according to claim 1, which is characterized in that the transmission gear includes: first gear and second gear,
Power input shaft passes through the first gear and the second gear is connect with the synchronizer.
8. device according to claim 7, which is characterized in that the connection type of the power input shaft and the synchronizer
For spline.
9. device according to claim 7, which is characterized in that shell is fixed on by bearing in the both ends of the power input shaft
On body.
10. the apparatus according to claim 1, which is characterized in that be provided with positioning spigot between the servo motor and shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920040060.4U CN209705260U (en) | 2019-01-10 | 2019-01-10 | A kind of gearshift of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920040060.4U CN209705260U (en) | 2019-01-10 | 2019-01-10 | A kind of gearshift of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705260U true CN209705260U (en) | 2019-11-29 |
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ID=68638441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920040060.4U Active CN209705260U (en) | 2019-01-10 | 2019-01-10 | A kind of gearshift of gearbox |
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| Country | Link |
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| CN (1) | CN209705260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248801A (en) * | 2020-09-24 | 2021-01-22 | 华为技术有限公司 | Reduction gear, power assembly and vehicle |
| CN113389855A (en) * | 2021-06-07 | 2021-09-14 | 银川威力传动技术股份有限公司 | Double-clutch two-gear automatic transmission and new energy automobile using same |
-
2019
- 2019-01-10 CN CN201920040060.4U patent/CN209705260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248801A (en) * | 2020-09-24 | 2021-01-22 | 华为技术有限公司 | Reduction gear, power assembly and vehicle |
| CN113389855A (en) * | 2021-06-07 | 2021-09-14 | 银川威力传动技术股份有限公司 | Double-clutch two-gear automatic transmission and new energy automobile using same |
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