CN220668346U - Gear shift actuator for a synchronous transmission and synchronous transmission comprising such a gear shift actuator - Google Patents
Gear shift actuator for a synchronous transmission and synchronous transmission comprising such a gear shift actuator Download PDFInfo
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- CN220668346U CN220668346U CN202322511558.3U CN202322511558U CN220668346U CN 220668346 U CN220668346 U CN 220668346U CN 202322511558 U CN202322511558 U CN 202322511558U CN 220668346 U CN220668346 U CN 220668346U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 55
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001133 acceleration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
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Abstract
A shift actuator (10) for a synchronous transmission, comprising: -a motor (100), said motor (100) outputting a rotational movement about a power direction (X); and a transmission mechanism configured to convert the rotational motion output by the motor (100) into translational motion for output, wherein the direction of the translational motion output by the transmission mechanism is parallel to the power direction (X). The utility model also relates to a synchronous transmission comprising such a shift actuator. The present utility model allows the output torque of the rotary motor as a power source to be reduced, thereby reducing the overall manufacturing cost of the shift actuator.
Description
Technical Field
The present utility model relates to the field of machine manufacturing, in particular to the design and manufacture of automotive parts, and more particularly to a shift actuator for a synchronous transmission and a synchronous transmission comprising the shift actuator.
Background
In synchronous transmissions, it is common practice to provide shift actuators therein in order to actuate a movement of a synchronizing sleeve (or synchronizing ring) in a translational direction.
The shift actuator includes a power source and a transmission mechanism disposed between the power source for providing power and the synchronizing sleeve for converting rotational motion output by the power source, such as a rotary motor, into translational motion for actuating the synchronizing sleeve.
For reasons of parts fitting, installation space and acceleration of the output translational movement, existing gear shift actuators generally arrange the axis of output rotation of the rotary motor in a vertical direction perpendicular to the translational direction of the synchronizing sleeve.
However, this arrangement of the shift actuator results in a larger space occupation of the shift actuator in the vertical direction, and often requires a selective bevel gear set to change the direction of the rotational force, and in addition, due to the limitation of the gear ratio, a higher output torque of the power source is required.
Thus, the prior art shift actuator often requires higher manufacturing and installation costs, and thus there is a need to develop and design a shift actuator capable of improving the above technical problems.
Disclosure of Invention
Based on the above technical problems in the prior art, the present utility model aims to provide a shift actuator for a synchronous transmission, which is capable of reducing space occupation in a vertical direction perpendicular to a translational direction of a synchronizing sleeve and of allowing reduction of an output torque of a rotary motor as a power source, thereby reducing an overall manufacturing cost of the shift actuator.
To this end, the utility model provides a shift actuator for a synchronous transmission, comprising:
a motor that outputs a rotational motion about a power direction; and
a transmission mechanism configured to convert a rotational motion output by the motor into a translational motion for output,
wherein,
the direction of the translational motion output by the transmission mechanism is parallel to the power direction.
According to a preferred embodiment of the shift actuator according to the utility model, the transmission comprises a lead screw nut assembly,
wherein the screw nut component comprises a screw rod capable of rotating and a nut sleeved on the screw rod and rotationally fixed and capable of linearly translating along the screw rod,
and wherein the transmission mechanism outputs the translational movement through the nut.
According to a preferred embodiment of the shift actuator according to the utility model, the transmission further comprises a gear set,
the gear set includes an input gear and an output gear,
wherein the input gear is fixedly mounted to an output member of the motor so as to perform a rotational motion output by the motor,
and wherein the output gear is fixedly mounted to the lead screw to transmit rotation output by the gear set to the lead screw.
According to a preferred embodiment of the shift actuator according to the utility model, said gear set comprises a planetary gear set.
According to a preferred embodiment of the gear shift actuator according to the utility model, the gear set comprises a sensing gear which is rotatable by the output gear,
wherein, the sensing gear is provided with an indicating element for indicating the rotation position of the sensing gear.
A preferred embodiment of the shift actuator according to the utility model further comprises:
one end of the stirring piece is connected with an output part of the transmission mechanism for outputting the translational motion, the other end of the stirring piece is used for driving a synchronous sleeve of the synchronous transmission,
and wherein the toggle member is rotatable about an axis perpendicular to the power direction.
According to a preferred embodiment of the shift actuator according to the utility model, the output member of the transmission mechanism outputting the translational movement comprises a cylindrical projection, and the dial comprises a fork-shaped engagement portion for receiving the cylindrical projection and pivotable about the cylindrical projection.
According to a preferred embodiment of the shift actuator according to the utility model, the end of the toggle element remote from the output member of the transmission mechanism outputting the translational movement comprises a fork or a finger.
According to a preferred embodiment of the shift actuator according to the utility model, the outer contour of the transmission does not exceed the outer contour of the motor in a plane perpendicular to the power direction.
The present utility model also provides a synchronous transmission comprising:
the aforementioned shift actuator; and
a synchronizing sleeve capable of translational movement, the translational direction of the synchronizing sleeve being parallel to the power direction of the motor.
In view of the above, the present utility model provides a shift actuator for a synchronous transmission, which can reduce space occupation in a vertical direction perpendicular to a translational direction of a synchronizing sleeve by a special arrangement of a transmission structure thereof, and can allow reduction of an output torque of a rotary motor as a power source, thereby reducing an overall manufacturing cost of the shift actuator.
Drawings
This document includes drawings to provide a further understanding of various embodiments. The accompanying drawings are incorporated in and constitute a part of this specification.
The drawings illustrate various embodiments described herein and, together with the description, serve to explain the principles and operation of the claimed subject matter.
Technical features of the present utility model will be clearly described hereinafter with reference to the above objects, and advantages thereof will be apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of the present utility model by way of example, and not by way of limitation of the scope of the present utility model.
In the accompanying drawings:
fig. 1 shows a schematic perspective view of a first preferred embodiment of an actuated shifter according to the present utility model; and
fig. 2 shows a schematic perspective view of a second preferred embodiment of an actuated shifter according to the present utility model.
List of reference numerals
10. Actuating shifter
100. Motor with a motor housing
210. Screw rod
220. Nut
221. Columnar protruding part
310. Sensing gear
400. Toggle piece
410. Fork-shaped clamping part
420A fork
420B finger
X power direction
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings and described below.
While the utility model will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the utility model to those illustrated.
On the contrary, the utility model is intended to cover not only these exemplary embodiments but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the utility model.
For convenience in explanation and accurate definition in the subject matter of the present utility model, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.
Various preferred but non-limiting embodiments of the shift actuator of the present utility model are described in detail below with reference to the accompanying drawings.
Fig. 1 and 2 show two different preferred embodiments of a shift actuator 10 for a synchronous transmission according to the utility model, respectively. In general, the two embodiments differ primarily in the engagement structure of the toggle 400 described below with a synchronizing sleeve (not shown). The shift actuator 10 of the present utility model will be described in detail below with reference to fig. 1 and 2.
As shown, the shift actuator 10 includes a motor 100 and a transmission.
The motor 100 outputs a rotational motion about the power direction X.
Wherein the power direction X extends in a substantially horizontal direction in the drawing.
Further, among them, the motor 100 may preferably be a common electric motor available on the market. It should be noted, however, that motor 100 herein also encompasses other power sources capable of outputting rotational motion, and is not limited to a direct-output rotary power motor, but may include a power source that ultimately outputs rotational motion via other energy sources.
The transmission is configured to convert rotational motion output by the motor 100 into translational motion for output. In other words, the transmission functions to convert a rotational movement through a mechanical structure and to output it in the form of a translational movement.
The translational motion output may have a desired acceleration and velocity, depending on the actual requirements.
The direction of the translational motion output by the transmission mechanism is parallel to the power direction X.
In the preferred embodiment shown in the figures, the transmission mechanism may preferably comprise a lead screw nut assembly.
The screw nut assembly may include a screw 210 capable of rotating and a nut 220 rotatably fixed to be sleeved on the screw 210 to be linearly translatable along the screw 210.
And wherein the transmission mechanism can output translational motion via nut 220.
Specifically, the nut 220 is capable of translating a desired distance along the power direction X as the screw 210 rotates due to being fixed in rotation about the power direction X.
The transmission may also include a gear set including an input gear and an output gear.
Wherein an input gear is fixedly installed to an output member of the motor 100 to perform a rotational motion outputted by the motor 100, and an output gear is fixedly installed to the screw 210 to transmit a rotation outputted by the gear set to the screw 210.
More preferably, the gear set may comprise a planetary gear set.
In the desired case, each gear of the gear set is rotatable about an axis of rotation parallel to the power direction X.
Furthermore, as shown in the preferred embodiment of the figures, the gear set may also include a sensing gear 310 that can be rotated by the output gear. The sensing gear 310 is provided with an indicating member indicating the rotational position of the sensing gear 310. Correspondingly, the above-mentioned indication element may for example comprise a magnetic element, and the rotational position of the magnetic element concerned may be arranged to be detected by a sensing element on the PCB board arranged perpendicular to the power direction X.
The shift actuator 10 may also include a toggle 400. One end of the stirring piece 400 is engaged with an output part of the transmission mechanism, which outputs translational motion, the other end of the stirring piece 400 is used for driving a synchronous sleeve of the synchronous transmission, and the stirring piece 400 can rotate around an axis perpendicular to the power direction X.
It is noted here that the toggle 400 is provided only for better connection of the output part of the transmission with the synchronizing sleeve (not shown in the figures), for example for better adaptation of the engagement point and the translational travel of the synchronizing sleeve, etc., but it is also conceivable for the person skilled in the art to directly meet the engagement requirements with the synchronizing sleeve by changing the shape of the output part of the transmission, for example the above-mentioned nut 220.
To engage and bring along the toggle member, in the preferred embodiment shown in the figures, the output member of the transmission mechanism outputting the translational movement may comprise a cylindrical protrusion 221, and correspondingly, the toggle member 400 may comprise a fork-shaped engagement portion 410 for receiving the cylindrical protrusion 221 and being pivotable about the cylindrical protrusion 221.
The central axis of the columnar protrusion 221 and the rotation axis of the fork-shaped engaging portion 410 parallel thereto may be arranged perpendicular to the power direction X.
Furthermore, to engage a different form of synchronizing sleeve, the end of the toggle 400 remote from the output member of the transmission mechanism that outputs translational movement may comprise a fork 420A as shown in fig. 1 or a finger 420B as shown in fig. 2. One skilled in the art can select one or more of the toggle members 400 according to actual requirements.
In a plane perpendicular to the power direction X, the outer contour of the transmission is preferably configured not to exceed the outer contour of the motor 100.
The utility model also provides a synchronous transmission (not shown in the drawings) comprising: the aforementioned shift actuator 10 and a synchronizing sleeve capable of translational movement. The translation direction of the synchronizing sleeve is parallel to the power direction X of the motor 100.
While the preferred embodiments of the present utility model have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other variations upon the embodiments described herein can be made in view of the detailed description above.
In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
Claims (10)
1. A shift actuator (10) for a synchronous transmission, comprising:
-a motor (100), said motor (100) outputting a rotational movement about a power direction (X); and
a transmission mechanism configured to convert a rotational motion output by the motor (100) into a translational motion for output,
it is characterized in that the method comprises the steps of,
the direction of the translational movement output by the transmission mechanism is parallel to the power direction (X).
2. The shift actuator (10) according to claim 1,
it is characterized in that the method comprises the steps of,
the transmission mechanism comprises a screw-nut assembly, the screw-nut assembly comprises a rotatable screw (210) and a nut (220) sleeved on the screw (210) and rotationally fixed so as to be capable of linearly translating along the screw (210), and the transmission mechanism outputs the translational motion through the nut (220).
3. The shift actuator (10) according to claim 2,
it is characterized in that the method comprises the steps of,
the transmission mechanism further comprises a gear set comprising an input gear and an output gear, wherein the input gear is fixedly mounted to an output member of the motor (100) so as to perform a rotational movement output by the motor (100), and the output gear is fixedly mounted to the screw (210) so as to transmit the rotation output by the gear set to the screw (210).
4. A shift actuator (10) according to claim 3,
it is characterized in that the method comprises the steps of,
the gear set includes a planetary gear set.
5. A shift actuator (10) according to claim 3,
it is characterized in that the method comprises the steps of,
the gear set comprises a sensing gear (310) which can be driven to rotate by the output gear, and an indicating element for indicating the rotation position of the sensing gear (310) is arranged on the sensing gear (310).
6. The shift actuator (10) according to claim 1,
it is characterized in that the method comprises the steps of,
further comprises:
the stirring piece (400), one end of the stirring piece (400) is connected with the output part of the transmission mechanism, which outputs the translational motion, the other end of the stirring piece (400) is used for driving the synchronous sleeve of the synchronous transmission, and the stirring piece (400) can rotate around the axis vertical to the power direction (X).
7. The shift actuator (10) according to claim 6,
it is characterized in that the method comprises the steps of,
the output part of the transmission mechanism outputting the translational movement comprises a cylindrical protrusion (221), and the toggle member (400) comprises a fork-shaped engagement portion (410) for receiving the cylindrical protrusion (221) and pivotable about the cylindrical protrusion (221).
8. The shift actuator (10) according to claim 6,
it is characterized in that the method comprises the steps of,
one end of the toggle element (400) remote from the output part of the transmission mechanism outputting the translational movement comprises a fork element (420A) or a finger element (420B).
9. The shift actuator (10) according to claim 1,
it is characterized in that the method comprises the steps of,
in a plane perpendicular to the power direction (X), the outer contour of the transmission does not exceed the outer contour of the motor (100).
10. A synchronous transmission, which is capable of reducing the number of gears,
it is characterized in that the method comprises the steps of,
comprising the following steps:
the shift actuator (10) according to any one of the preceding claims; and
-a synchronizing sleeve capable of translational movement, the translational direction of which is parallel to the power direction (X) of the motor (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511558.3U CN220668346U (en) | 2023-09-15 | 2023-09-15 | Gear shift actuator for a synchronous transmission and synchronous transmission comprising such a gear shift actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322511558.3U CN220668346U (en) | 2023-09-15 | 2023-09-15 | Gear shift actuator for a synchronous transmission and synchronous transmission comprising such a gear shift actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220668346U true CN220668346U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322511558.3U Active CN220668346U (en) | 2023-09-15 | 2023-09-15 | Gear shift actuator for a synchronous transmission and synchronous transmission comprising such a gear shift actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220668346U (en) |
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2023
- 2023-09-15 CN CN202322511558.3U patent/CN220668346U/en active Active
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