CN217152851U - Speed change mechanism and motor - Google Patents
Speed change mechanism and motor Download PDFInfo
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- CN217152851U CN217152851U CN202220679856.6U CN202220679856U CN217152851U CN 217152851 U CN217152851 U CN 217152851U CN 202220679856 U CN202220679856 U CN 202220679856U CN 217152851 U CN217152851 U CN 217152851U
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Abstract
The utility model discloses a speed change mechanism and motor, it includes: the device comprises an input shaft, an output shaft, a first transmission mechanism and a second transmission mechanism; the output shaft can rotate at a first rotating speed or a second rotating speed, and the first rotating speed and the second rotating speed are different; the input shaft and the output shaft are connected through the first transmission mechanism; when and only when the input shaft rotates in the clockwise direction, the input shaft can drive the output shaft to rotate at a first rotating speed through the first transmission mechanism; the input shaft and the output shaft are connected through the second transmission mechanism; and if and only if the input shaft rotates along the anticlockwise direction, the input shaft can drive the output shaft to rotate at a second rotating speed through the second transmission mechanism. By controlling the rotation direction of the motor, two different rotating speeds can be transmitted through the first transmission mechanism or the second transmission mechanism.
Description
Technical Field
The utility model relates to the field of electric machines, in particular to speed change mechanism and motor.
Background
It is known that during use of an electric motor, it is often necessary to adjust the rotational speed output by the motor so that it can be adapted to different output requirements. At present, the change of the output rotating speed of the motor is mainly realized by an external transmission. However, when the electric motor is required to provide a plurality of rotation speeds, the corresponding transmission needs to be replaced, and thus, the problems of complicated operation and high cost are not doubtful.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a speed change mechanism can change the output rotational speed of motor in multiple speed.
The utility model discloses still provide an electric motor that has above-mentioned speed change mechanism.
According to the utility model discloses a speed change mechanism of first aspect embodiment includes: the device comprises an input shaft, an output shaft, a first transmission mechanism and a second transmission mechanism; the output shaft can rotate at a first rotating speed or a second rotating speed, and the first rotating speed and the second rotating speed are different; the input shaft and the output shaft are connected through the first transmission mechanism; when and only when the input shaft rotates in the clockwise direction, the input shaft can drive the output shaft to rotate at a first rotating speed through the first transmission mechanism; the input shaft and the output shaft are connected through the second transmission mechanism; and if and only if the input shaft rotates along the anticlockwise direction, the input shaft can drive the output shaft to rotate at a second rotating speed through the second transmission mechanism.
According to the utility model discloses speed change mechanism has following beneficial effect at least: the input shaft is driven by the motor and rotates clockwise, the output shaft is driven by the first transmission mechanism to rotate at a first rotating speed, and the second transmission mechanism does not act at the moment; and when the input shaft is driven by the motor and rotates anticlockwise, the output shaft is driven by the second transmission mechanism to rotate at a second rotating speed, and the first transmission mechanism does not act at the moment. Therefore, the motor can output the first rotating speed or the second rotating speed outwards through the output shaft.
By controlling the rotation direction of the motor, two different rotating speeds can be transmitted through the first transmission mechanism or the second transmission mechanism. Therefore, the rotating speed output by the motor can be directly adjusted and changed between the first rotating speed and the second rotating speed, and the steps of disassembling and reassembling the speed change mechanism and the like are not needed, so that the speed change device has the advantages of direct and convenient speed change operation and low speed change cost.
According to some embodiments of the present invention, the first transmission mechanism includes a first input gear sleeved on the input shaft, the output shaft is provided with a first output gear, and the first input gear is connected with the first output gear and can drive the first output gear to rotate; the output shaft is provided with a first one-way bearing, and the first output gear is connected to the periphery of the first one-way bearing and can drive the output shaft to rotate at a first rotating speed through the first one-way bearing.
According to some embodiments of the present invention, the first input gear and the first output gear are rotatably provided with a first speed regulating gear therebetween, the first input gear and the first output gear pass through the first speed regulating gear connection.
According to the utility model discloses a some embodiments, first speed governing gear with rotationally be provided with second speed governing gear between the first output gear, first input gear first speed governing gear second speed governing gear with first output gear meshes the connection in proper order.
According to some embodiments of the present invention, the second transmission mechanism includes a second input gear sleeved on the input shaft, the output shaft is provided with a second output gear, and the second input gear is connected with the second output gear and can drive the second output gear to rotate; the output shaft is provided with a second one-way bearing, and the second output gear is connected to the periphery of the second one-way bearing and can drive the output shaft to rotate at a second rotating speed through the second one-way bearing.
According to some embodiments of the present invention, the output shaft is provided with a first one-way bearing, and when the input shaft rotates clockwise, the output shaft can be driven to rotate by the first one-way bearing; when the input shaft rotates along the anticlockwise direction, the output shaft can be driven to rotate through the second one-way bearing.
According to the utility model discloses a some embodiments, be provided with the connection key on the output shaft, first one-way bearing and/or the interior epaxial keyway that is provided with of circle of second one-way bearing, connect the key install in the keyway.
According to some embodiments of the utility model, still include the shell, the input shaft the output shaft first drive mechanism with second drive mechanism all install in the shell.
According to some embodiments of the invention, the input shaft is provided with a bevel gear pair for connecting an electric motor.
According to a second aspect of the present invention, an electric motor includes a speed change mechanism according to the first aspect of the present invention.
According to the utility model discloses motor has following beneficial effect at least: by controlling the rotation direction of the motor, two different rotating speeds can be transmitted through the first transmission mechanism or the second transmission mechanism. Therefore, the rotating speed output by the motor can be directly adjusted and changed between the first rotating speed and the second rotating speed, and the steps of disassembling and reassembling the speed change mechanism and the like are not needed, so that the speed change device has the advantages of direct and convenient speed change operation and low speed change cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a transmission mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the shifting mechanism shown in FIG. 1;
FIG. 3 is a schematic view of the shifting mechanism shown in FIG. 1 in an exploded state;
fig. 4 is a schematic view of an output shaft of the transmission mechanism shown in fig. 1.
Reference numerals: 200 is a shell, 300 is an input shaft, 310 is a first input gear, 320 is a second input gear, 350 is a bevel gear pair, 400 is a first transmission shaft, 410 is a first speed regulating gear, 500 is a second transmission shaft, 510 is a second speed regulating gear, 600 is an output shaft, 605 is a connecting key, 610 is a first output gear, 615 is a first one-way bearing, 620 is a second output gear, 625 is a second one-way bearing, and 900 is a driving part.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, a first aspect of the present invention provides a speed change mechanism, including: an input shaft 300, an output shaft 600, a first transmission mechanism and a second transmission mechanism; the output shaft 600 is rotatable at a first rotational speed or a second rotational speed, the first rotational speed and the second rotational speed being different; the input shaft 300 and the output shaft 600 are connected through a first transmission mechanism; if and only if the input shaft 300 rotates clockwise, the input shaft 300 can drive the output shaft 600 to rotate at a first rotation speed through the first transmission mechanism; the input shaft 300 and the output shaft 600 are connected through a second transmission mechanism; if and only if the input shaft 300 rotates in the counterclockwise direction, the input shaft 300 can drive the output shaft 600 to rotate at the second rotation speed through the second transmission mechanism. When the input shaft 300 is driven by the motor and rotates clockwise, the output shaft 600 is driven by the first transmission mechanism to rotate at a first rotation speed, and the second transmission mechanism does not act; when the input shaft 300 is driven by the motor and rotates counterclockwise, the output shaft 600 is driven by the second transmission mechanism to rotate at the second rotation speed, and the first transmission mechanism does not act at this time. Thus, the motor can output the first rotation speed or the second rotation speed to the outside through the output shaft 600. By controlling the rotation direction of the motor, two different rotating speeds can be transmitted through the first transmission mechanism or the second transmission mechanism. Therefore, the rotating speed output by the motor can be directly adjusted and changed between the first rotating speed and the second rotating speed, and the steps of disassembling and reassembling the speed change mechanism and the like are not needed, so that the speed change device has the advantages of direct and convenient speed change operation and low speed change cost.
In some embodiments, referring to fig. 2, the first transmission mechanism includes a first input gear 310 sleeved on the input shaft 300, a first output gear 610 is disposed on the output shaft 600, and the first input gear 310 is connected with the first output gear 610 and can drive the first output gear 610 to rotate; the output shaft 600 is provided with a first one-way bearing 615, and a first output gear 610 is connected to the outer circumference of the first one-way bearing 615 and can drive the output shaft 600 to rotate at a first rotation speed through the first one-way bearing. When the outer ring of the first one-way bearing 615 rotates counterclockwise, the outer ring will be clamped with the inner ring, so that the inner ring and the outer ring cannot rotate relatively; and the outer race of the first one-way bearing 615, when rotating clockwise, will be able to rotate relative to its inner race. When the input shaft 300 rotates clockwise, the first input gear 310 will be driven to rotate clockwise. Subsequently, the first input gear 310 will drive the first output gear 610 to rotate counterclockwise, and the first output gear 610 will drive the outer ring of the first one-way bearing 615 to rotate counterclockwise. When the outer ring of the first one-way bearing 615 rotates counterclockwise, the first output gear 610 can drive the output shaft 600 to rotate at the first rotation speed through the first one-way bearing 615 because the inner ring and the outer ring are clamped. Moreover, since the inner ring and the outer ring of the first output gear 610 can rotate relatively when rotating clockwise, the input shaft 300 cannot drive the output shaft 600 to rotate, so that the effect that the output shaft 600 rotates at the first rotation speed when and only when the input shaft 300 rotates clockwise is effectively achieved.
It is contemplated that more gears may be coupled between the first input gear 310 and the first output gear 610 to change the relative rotational direction between the input shaft 300 and the output shaft 600. Therefore, the relative rotation direction between the input shaft 300 and the output shaft 600 is not fixed to be the same or opposite, and the first one-way bearing 615 is only used for connection, and should be considered as the solution of the present application or the solution similar to the solution of the present application, and included in the protection scope of the solution of the present application.
In some embodiments, referring to fig. 3, a first speed gear 410 is rotatably disposed between the first input gear 310 and the first output gear 610, and the first input gear 310 and the first output gear 610 are connected by the first speed gear 410. The first speed regulating gear 410 can regulate the rotation speed between the first input gear 310 and the first output gear 610, so as to better regulate the rotation speed of the first output gear 610 and the output shaft 600 to the first rotation speed, thereby ensuring that the output shaft 600 can effectively achieve the effect of regulating the rotation speed.
Specifically, the first transmission shaft 400 is disposed between the first input gear 310 and the first output gear 610, and the first speed gear 410 is mounted on the outer circumference of the first transmission shaft 400.
In some embodiments, referring to fig. 3, a second speed gear 510 is rotatably disposed between the first speed gear 410 and the first output gear 610, and the first input gear 310, the first speed gear 410, the second speed gear 510 and the first output gear 610 are sequentially in meshed connection. The second speed gear 510 not only can adjust the rotation speed again and make the rotation speed of the output shaft 600 more accurately adjusted to the first rotation speed, but also can adjust the rotation direction of the output shaft 600 in cooperation with the first speed gear 410. With the cooperation of the first speed gear 410 and the second speed gear 510, the output shaft 600 is turned in the same direction as when it is directly engaged with the input shaft 300, and thus, the determination of the turning thereof can be facilitated.
Specifically, a second driving shaft 500 is disposed between the first speed gear 410 and the first output gear 610, and the second speed gear 510 is mounted on the outer circumference of the second driving shaft 500.
It is contemplated that more speed gears may be connected between the input shaft 300 and the output shaft 600, and the specific embodiment may be adjusted according to actual needs, which is not limited herein.
In some embodiments, referring to fig. 2, the second transmission mechanism includes a second input gear 320 sleeved on the input shaft 300, a second output gear 620 is disposed on the output shaft 600, and the second input gear 320 is connected with the second output gear 620 and can drive the second output gear to rotate; the output shaft 600 is provided with a second one-way bearing 625, and the second output gear 620 is connected to the periphery of the second one-way bearing 625 and can drive the output shaft 600 to rotate at a second rotating speed through the second one-way bearing 625. When the outer ring of the second one-way bearing 625 rotates clockwise, the outer ring will be clamped with the inner ring, so that the inner ring and the outer ring cannot rotate relatively; while the outer race of the second one-way bearing 625 may rotate relative to the inner race thereof when rotating counterclockwise. When the input shaft 300 rotates counterclockwise, the second input gear 320 will be driven to rotate in the counterclockwise direction. Subsequently, the second input gear 320 will drive the second output gear 620 to rotate clockwise, and the second output gear 620 will drive the outer ring of the second one-way bearing 625 to rotate clockwise. When the outer ring of the second one-way bearing 625 rotates clockwise, the second output gear 620 can drive the output shaft 600 to rotate at the second rotation speed through the second one-way bearing 625 because the inner ring and the outer ring are tightly clamped. Moreover, since the inner ring and the outer ring of the second output gear 620 can rotate relatively when rotating counterclockwise, the input shaft 300 cannot drive the output shaft 600 to rotate, so that the effect that the output shaft 600 rotates at the second rotation speed when and only when the input shaft 300 rotates counterclockwise is effectively achieved.
Specifically, the ratio of the rotational speeds between the first input gear 310 and the first output gear 610 is different from the ratio of the rotational speeds between the second input gear 320 and the second output gear 620. The differential rotation speed ratio enables the rotation speed of the output shaft 600 to be different when the output shaft is driven by the first transmission mechanism or the second transmission mechanism, so that the effect that the output shaft 600 directly outputs various rotation speeds is achieved.
In some embodiments, referring to fig. 4, a first one-way bearing 615 is disposed on the output shaft 600, and when the input shaft 300 rotates in the clockwise direction, the output shaft 600 can be driven to rotate by the first one-way bearing 615; when the input shaft 300 rotates in the counterclockwise direction, the output shaft 600 can be driven to rotate by the second one-way bearing 625. The first one-way bearing 615 and the second one-way bearing 625 are reversely configured such that only one of them will clamp and drive the output shaft 600 to rotate when they are subjected to the torque from the same steering, thereby directly and effectively achieving the effect of changing the rotation speed of the output shaft 600 by switching the steering of the motor.
Specifically, the first one-way bearing 615 and the second one-way bearing 625 are identical in structure and are oriented in opposite directions.
It is conceivable that the first one-way bearing 615 and the second one-way bearing 625 are disposed in the opposite configuration and are attached to the output shaft 600 in the same orientation. The specific implementation manner can be adjusted according to actual needs, and is not limited herein.
It is contemplated that the first one-way bearing 615 and the second one-way bearing 625 may be replaced by other components, such as a ratchet (not shown) with a one-way driving effect, as long as one of the two components can rotate freely when rotating in the forward and reverse directions, and the other component will lock. The specific implementation manner can be adjusted according to actual needs, and is not limited herein.
In some embodiments, referring to fig. 4, the output shaft 600 is provided with a connection key 605, and the inner ring of the first one-way bearing 615 and/or the second one-way bearing 625 is provided with a key slot in which the connection key 605 is installed. The connection key 605 installed in the key slot can effectively connect the output shaft 600 and the first one-way bearing 615 and/or the second one-way bearing 625, thereby ensuring that the first one-way bearing 615 and/or the second one-way bearing 625 can drive the output shaft 600 to rotate.
It is contemplated that the first one-way bearing 615 and/or the second one-way bearing 625 may also be fixed relative to the output shaft 600 by a tight fit. The specific implementation manner can be adjusted according to actual needs, and is not limited herein.
In some embodiments, referring to fig. 1, a housing 200 is further included, and the input shaft 300, the output shaft 600, the first transmission mechanism and the second transmission mechanism are all mounted within the housing 200. The housing 200 can effectively protect the input shaft 300, the output shaft 600, the first transmission mechanism, the second transmission mechanism and other components therein, prevent impurities such as dust from affecting the operation of the transmission mechanism, and further ensure that the input shaft 300 and the output shaft 600 can stably transmit the rotating speed and the torque.
In some embodiments, referring to fig. 2, a bevel gear pair 350 is provided on the input shaft 300 for connection to a motor. Bevel gear pair 350 not only rotates input shaft 300, but also adjusts the relative orientation between motor drive 900 and input shaft 300, thereby facilitating a reduction in the amount of space required by the two as a whole.
A second aspect of the present invention provides an electric motor, including the above speed change mechanism. By controlling the rotation direction of the motor, two different rotating speeds can be transmitted through the first transmission mechanism or the second transmission mechanism. Therefore, the rotating speed output by the motor can be directly adjusted and changed between the first rotating speed and the second rotating speed, and the steps of disassembling and reassembling the speed change mechanism and the like are not needed, so that the speed change device has the advantages of direct and convenient speed change operation and low speed change cost.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A speed change mechanism characterized by comprising:
an input shaft (300);
an output shaft (600) rotatable at a first rotational speed or a second rotational speed, the first rotational speed and the second rotational speed being different;
a first transmission mechanism through which the input shaft (300) and the output shaft (600) are connected; when and only when the input shaft (300) rotates in the clockwise direction, the input shaft (300) can drive the output shaft (600) to rotate at a first rotating speed through the first transmission mechanism;
a second transmission mechanism through which the input shaft (300) and the output shaft (600) are connected; if and only if the input shaft (300) rotates along the counterclockwise direction, the input shaft (300) can drive the output shaft (600) to rotate at a second rotating speed through the second transmission mechanism.
2. The variator of claim 1, wherein:
the first transmission mechanism comprises a first input gear (310) sleeved on the input shaft (300), a first output gear (610) is arranged on the output shaft (600), and the first input gear (310) is connected with the first output gear (610) and can drive the first output gear (610) to rotate; the output shaft (600) is provided with a first one-way bearing (615), and the first output gear (610) is connected to the periphery of the first one-way bearing (615) and can drive the output shaft (600) to rotate at a first rotating speed through the first one-way bearing.
3. The variator of claim 2, wherein:
a first speed regulating gear (410) is rotatably arranged between the first input gear (310) and the first output gear (610), and the first input gear (310) and the first output gear (610) are connected through the first speed regulating gear (410).
4. The variator of claim 3, wherein:
first speed governing gear (410) with rotationally be provided with second speed governing gear (510) between first output gear (610), first input gear (310) first speed governing gear (410), second speed governing gear (510) with first output gear (610) meshing connection in proper order.
5. The variator of claim 1, wherein:
the second transmission mechanism comprises a second input gear (320) sleeved on the input shaft (300), a second output gear (620) is arranged on the output shaft (600), and the second input gear (320) is connected with the second output gear (620) and can drive the second output gear to rotate; the output shaft (600) is provided with a second one-way bearing (625), and the second output gear (620) is connected to the periphery of the second one-way bearing (625) and can drive the output shaft (600) to rotate at a second rotating speed through the second one-way bearing.
6. The variator of claim 5, wherein:
the output shaft (600) is provided with a first one-way bearing (615), and when the input shaft (300) rotates clockwise, the output shaft (600) can be driven to rotate through the first one-way bearing (615); when the input shaft (300) rotates along the counterclockwise direction, the output shaft (600) can be driven to rotate by the second one-way bearing (625).
7. The variator of claim 6, wherein:
the output shaft (600) is provided with a connecting key (605), the inner ring of the first one-way bearing (615) and/or the second one-way bearing (625) is provided with a key groove, and the connecting key (605) is arranged in the key groove.
8. The variator of claim 1, wherein:
the transmission mechanism further comprises a shell (200), and the input shaft (300), the output shaft (600), the first transmission mechanism and the second transmission mechanism are all installed in the shell (200).
9. The variator of claim 1, wherein:
the input shaft (300) is provided with a bevel gear pair (350) for connecting a motor.
10. An electric motor comprising the speed change mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679856.6U CN217152851U (en) | 2022-03-25 | 2022-03-25 | Speed change mechanism and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679856.6U CN217152851U (en) | 2022-03-25 | 2022-03-25 | Speed change mechanism and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217152851U true CN217152851U (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220679856.6U Active CN217152851U (en) | 2022-03-25 | 2022-03-25 | Speed change mechanism and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217152851U (en) |
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- 2022-03-25 CN CN202220679856.6U patent/CN217152851U/en active Active
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