CN218124493U - Speed reduction motor and new forms of energy car - Google Patents
Speed reduction motor and new forms of energy car Download PDFInfo
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- CN218124493U CN218124493U CN202221287412.4U CN202221287412U CN218124493U CN 218124493 U CN218124493 U CN 218124493U CN 202221287412 U CN202221287412 U CN 202221287412U CN 218124493 U CN218124493 U CN 218124493U
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Abstract
The utility model belongs to the technical field of transmission, especially, relate to a gear motor and new forms of energy car. The speed reducing motor of the utility model comprises a shell which is provided with a holding cavity; the mounting bracket is positioned in the accommodating cavity and fixedly connected with the shell; the stator assembly is positioned in the accommodating cavity and is fixedly connected with the shell; the rotor is positioned in the accommodating cavity; the input shaft at least comprises a first segment, a second segment and a third segment, wherein the axis of the outer surface of the second segment is parallel to the axis of the outer surface of the first segment and is away from the axis of the outer surface of the first segment by a preset distance; the planetary gear is rotationally connected with the second section through a second bearing and is provided with a cylindrical bulge; the inner gear ring is fixedly connected with the shell and is meshed with the planetary gear; and the output shaft is rotationally connected with the third section through a third bearing. The utility model discloses a gear motor is small, and output torque is big, and response speed is fast.
Description
Technical Field
The utility model relates to a transmission technical field especially relates to a gear motor and new forms of energy car.
Background
In order to prevent the vehicle from rolling down on an inclined road surface, a parking brake system can be used for locking the power output of a gearbox gear and a half shaft. In this regard, the prior art often uses a gear motor in the parking brake system to apply a sufficient amount of drag to the vehicle. In order to output a large torque, a conventional method of performing multi-stage reduction by engaging a plurality of pairs of gears is often used, and for example, a method of performing reduction by engaging a plurality of gears is used in patent publication No. 202122678642.5. By adopting the scheme, the number of pairs of gears needing to be meshed for transmission is relatively large, so that the problems of overlarge integral volume and low response speed of the speed reducing motor are caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a gear motor and new forms of energy automobile are used in solving current gear motor bulky, the slow technical problem of response speed.
The utility model adopts the technical proposal that:
in a first aspect, the utility model provides a gear motor, include:
a housing provided with an accommodating chamber;
the mounting bracket is positioned in the accommodating cavity and is fixedly connected with the shell;
the stator assembly is positioned in the accommodating cavity and fixedly connected with the shell;
the rotor is positioned in the accommodating cavity;
the input shaft at least comprises a first section, a second section and a third section, the axis of the outer surface of the second section is parallel to the axis of the outer surface of the first section and has a preset distance, the first section is rotatably connected with the mounting bracket through a first bearing, the axis of the third section is on the same straight line with the axis of the first section, and the rotor is fixedly connected with the first section;
the planetary gear is rotationally connected with the second section through a second bearing, and cylindrical bulges arrayed along the circumferential direction of the planetary gear are arranged on the planetary gear;
the inner gear ring is fixedly connected with the shell and is meshed with the planetary gear;
and the output shaft is rotationally connected with the third section through a third bearing, connecting holes arrayed along the circumferential direction of the output shaft are formed in the output shaft, and at least one part of the cylindrical bulge penetrates into the connecting holes.
Preferably, the housing comprises an upper housing and a lower housing, and the upper housing is detachably connected with the lower housing.
Preferably, a first step is arranged in the lower shell, the first step comprises a first surface wall and a second surface wall which are connected, a limiting ring is arranged on the mounting bracket, the outer wall of the limiting ring is abutted to the second surface wall, and the surface of the mounting bracket facing the output shaft is lapped on the first surface wall.
Preferably, the mounting bracket comprises a first mounting portion and a second mounting portion, the first mounting portion is protruded towards the upper shell from the surface of the mounting bracket towards the upper shell, the second mounting portion is protruded towards the output shaft from the surface of the mounting bracket towards the output shaft, the first mounting portion and the second mounting portion enclose a semi-enclosed accommodating cavity, and the first bearing is arranged in the accommodating cavity.
Preferably, the mounting bracket further comprises a connecting part, and the connecting part extends to a position connected with the limiting ring from the second mounting part towards the direction away from the first bearing.
Preferably, the number of the connecting parts is multiple, and the connecting parts are radially arranged on the mounting bracket by taking the central axis of the limiting ring as the center.
Preferably, the axial position adjusting device further comprises an axial position adjusting piece, a second step is arranged in the lower shell, a third step is arranged on the output shaft, and the axial position adjusting piece is located between the surface wall of the second step and the surface wall of the third step.
Preferably, the stator assembly surrounds the outer periphery of the rotor.
Preferably, a first protrusion, a second protrusion and a plurality of third protrusions are arranged on the surface of the upper shell, which faces away from the output shaft, the first protrusion and the second protrusion are annular protrusions with unequal radii, the center of the first protrusion coincides with the center of the second protrusion, the third protrusions are arranged along the circumferential direction of the first protrusion, and the third protrusions extend from the center of the first protrusion in a direction away from the center of the first protrusion.
In a second aspect, the present invention provides a new energy vehicle, including the first aspect speed reduction motor.
Has the advantages that: the utility model discloses a gear motor utilizes the rotating magnetic field that stator module produced to drive the rotor and rotates, makes the rotor drive the input shaft and rotates. Since the input shaft is divided into three sections in the embodiment, the axis of the outer surface of the second section is parallel to and at a certain distance from the axis of the outer surface of the first section, so that the planetary gear revolves around the axis of the first section along with the input shaft on one hand, and rotates around the axis of the second section under the action of the internal gear ring on the other hand. The planetary gear drives the output shaft to rotate by utilizing the cylindrical protrusion arranged on the planetary gear and the connecting hole arranged on the output shaft while moving, and the rotating speed of the output shaft is far lower than that of the motor rotor, so that the output with a larger transmission ratio is realized through one-stage speed reduction after the planetary gear is meshed with the gear ring, and the speed reduction motor can rapidly output larger torque under the condition of keeping smaller volume.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings, and these drawings are all within the protection scope of the present invention.
Fig. 1 is a sectional view of a reduction motor according to the present invention;
fig. 2 is a schematic three-dimensional structure diagram of the speed reduction motor of the present invention;
FIG. 3 is a cross-sectional view of the assembly of the lower housing and the mounting bracket of the present invention;
fig. 4 is a schematic structural diagram of the input shaft of the present invention;
fig. 5 is a schematic structural view of the mounting bracket of the present invention;
fig. 6 is a schematic structural view of the engagement between the inner gear ring and the planetary gear of the present invention;
fig. 7 is a left side view of the reduction motor of the present invention.
Parts and numbers in the drawings:
the axial position adjusting device comprises a shell 10, an upper shell 11, a first protrusion 111, a second protrusion 112, a third protrusion 113, a lower shell 12, a first step 121, a first surface wall 1211, a second surface wall 1212, a second step 122, a mounting bracket 20, a limiting ring 21, a first mounting portion 22, a second mounting portion 23, a connecting portion 24, a stator assembly 30, a rotor 40, an input shaft 50, a first section 51, a second section 52, a third section 53, a planetary gear 60, a cylindrical protrusion 61, an inner gear ring 70, an output shaft 80, a third step 81 and an axial position adjusting piece 90. A first bearing 91, a second bearing 92, and a third bearing 93.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" comprises 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element. If there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each other, all of which are within the scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a reduction motor including a case 10, a mounting bracket 20, a stator assembly 30, a rotor 40, an input shaft 50, a planetary gear 60, a ring gear 70, and an output shaft 80.
The housing 10 is provided with a receiving cavity, and the receiving cavity is mainly used for receiving other parts of the speed reducing motor;
the mounting bracket 20 is located in the accommodating cavity, and the mounting bracket 20 is fixedly connected with the shell 10; the mounting bracket 20 serves as a support structure for mounting some components, and the components can be fixedly mounted on the mounting bracket 20, and because the mounting bracket 20 is fixedly connected with the housing 10, the components can be relatively fixed with respect to the housing 10 through the mounting bracket 20.
The stator assembly 30 is located in the accommodating cavity, the stator assembly 30 is fixedly connected with the housing 10, the stator assembly 30 is fixedly installed in the housing 10, the stator assembly 30 can be connected with an external power supply through a wire, and the stator assembly 30 can generate a magnetic field rotating in space after being electrified;
the rotor 40 is located in the accommodating cavity, and when the stator assembly 30 is powered on, the rotor 40 can rotate under the driving of a rotating magnetic field generated by the stator assembly 30; in this embodiment, the stator assembly 30 surrounds the outer periphery of the rotor 40, that is, the stator at the outer periphery of the speed reducing motor is stationary during operation, and the rotor 40 at the inner ring rotates.
As shown in fig. 1 and 4, the input shaft 50 includes at least a first segment 51, a second segment 52 and a third segment 53, an axis of an outer surface of the second segment 52 is parallel to and spaced from an axis of an outer surface of the first segment 51 by a predetermined distance, the first segment 51 is rotatably connected to the mounting bracket 20 by a first bearing 91, an axis of the third segment 53 is collinear with an axis of the first segment 51, and the rotor 40 is fixedly connected to the first segment 51;
as shown in fig. 4, the outer surfaces of the first section 51, the second section 52 and the third section 53 are all cylindrical surfaces, and the central line of the cylindrical surfaces is the axis of each section. Wherein the axes of the first and third segments 51, 53 are collinear and the axis of the second segment 52 is offset a distance from either the first segment 51 or the third segment 53. The aforementioned preset distance refers to the distance between the axes of the two segments in a direction perpendicular to the axis of one of the segments. The aforementioned distance can be selected according to the requirements of the transmission ratio. In specific implementation, the outer surface of the first segment 51 is tightly connected with the inner ring of the first bearing 91, and the outer ring of the second bearing 91 is tightly connected with the mounting bracket 20.
As shown in fig. 1, wherein the planetary gear 60 is rotatably connected with the second section 52 through a second bearing 91, the planetary gear 60 is provided with cylindrical protrusions 61 arranged along the circumferential direction of the planetary gear 60; in the present embodiment, the planetary gear 60 is sleeved on the second section 52 through the second bearing 91, so that the planetary gear 60 can rotate relative to the second section 52. In a specific implementation, the planetary gear 60 may be provided with a first shaft hole, an inner ring of the second bearing 91 is fixed to the outer surface of the second segment 52, and an outer ring of the second bearing 91 is fixed to the shaft hole of the planetary gear 60. Since the axis of the second section 52 is offset a distance from the first section 51 or the third section 53, the planet gear 60 follows the axis of rotation of the second section 52 about the first section 51 when the input shaft 50 rotates about the first section 51.
As shown in fig. 1 and 6, wherein an inner gear ring 70 is fixedly connected with the housing 10, the inner gear ring 70 is engaged with the planetary gears 60; the planetary gear 60 rotates about the axis of the second segment 52 by the ring gear 70 while rotating with the second segment 52 about the axis of the first segment 51.
The output shaft 80 is rotatably connected to the third section 53 through a third bearing 93, the output shaft 80 is provided with connecting holes arranged along the circumferential direction of the output shaft 80, and at least a portion of the cylindrical protrusion 61 penetrates into the connecting holes. In specific implementation, the inner ring of the third bearing 93 may be fixed to the outer surface of the third section 53, the output shaft 80 is provided with a second shaft hole, and the outer ring of the third bearing 93 and the second shaft hole of the output shaft 80 are fixed.
When the speed reducing motor in this embodiment works, the rotor 40 is driven to rotate by the rotating magnetic field, the rotor 40 drives the input shaft 50 to rotate around the axis of the first segment 51, and the rotating shaft drives the planetary gear 60 to rotate. Under the action of the input shaft 50 and the ring gear 70, the planetary gear 60 revolves around the axis of the first segment 51 along with the rotating shaft on one hand, and rotates around the axis of the second segment 52 on the other hand. The planet gear 60 drives the output shaft 80 to rotate by utilizing the cylindrical protrusion 61 arranged on the planet gear and the connecting hole arranged on the output shaft 80 while doing the above movement, and the rotating speed of the output shaft 80 is far less than that of the motor rotor 40, so that the embodiment realizes larger transmission ratio output through one-stage speed reduction after the planet gear 60 is meshed with the gear ring, and the speed reduction motor can quickly output larger torque under the condition of keeping smaller volume.
As shown in fig. 1 and 2, in the present embodiment, the housing 10 includes an upper housing 11 and a lower housing 12, and the upper housing 11 is detachably connected to the lower housing 12. Thus, the components in the accommodating cavity can be installed first, and then the upper shell 11 and the lower shell 12 are assembled together.
As shown in fig. 3 and 5, in the present embodiment, a first step 121 is provided in the lower housing 12, the first step 121 includes a first surface wall 1211 and a second surface wall 1212 which are connected, a limit ring 21 is provided on the mounting bracket 20, an outer wall of the limit ring 21 abuts against the second surface wall 1212, and a surface of the mounting bracket 20 facing the output shaft 80 abuts against the first surface. The first surface wall 1211 is parallel to the axial direction of the input shaft 50, and the second surface wall 1212 is substantially perpendicular to the first surface wall 1211. After the outer wall of the retainer ring 21 abuts against the second front wall 1212 on the mounting bracket 20, the position of the mounting bracket 20 in the radial direction is defined by the retainer ring 21 and the second front wall 1212. When the surface of the mounting bracket 20 facing the output shaft 80 is overlapped with the first surface wall 1211, the position of the mounting bracket 20 in the axial direction with respect to the housing 10 is defined by the first surface wall 1211. The limit positions of the mounting frame and the shell 10 can be accurately limited by adopting the simple structure, so that all parts in the speed reducing motor can be installed in place.
As shown in fig. 3, in the present embodiment, the mounting bracket 20 includes a first mounting portion 22 protruding from the surface of the mounting bracket 20 facing the upper housing 11 toward the upper housing 11, and a second mounting portion 23 protruding from the surface of the mounting bracket 20 facing the output shaft 80 toward the output shaft 80, the first mounting portion 22 and the second mounting portion 23 enclose a semi-enclosed accommodating cavity, and the first bearing 91 is disposed in the accommodating cavity. The present embodiment utilizes the first mounting portion 22 and the second mounting portion 23 to enclose a semi-enclosed receiving cavity for mounting the first bearing 91. When mounted, the first bearing 91 enters the receiving cavity from the open end of the semi-enclosed structure. Wherein the second mounting portion 23 may be an annular protrusion to leave a cylindrical receiving cavity, which may match the profile of the first bearing 91.
As shown in fig. 5, in the present embodiment, the mounting bracket 20 further includes a connecting portion 24, and the connecting portion 24 extends from the second mounting portion 23 to a position where it is connected to the stop collar 21 in a direction away from the first bearing 91. Wherein the number of the connecting portions 24 may be plural. When the number of the connecting portions 24 is plural, the connecting portions 24 are provided on the mounting bracket 20 in a radial shape centering on the central axis of the retainer ring 21. With the above structure, the retainer ring 21 and the second mounting portion 23 can be connected to each other by the connecting portion 24 from all directions to form an integral structure, thereby improving the strength and rigidity of the mounting bracket 20.
The gear motor of the embodiment further includes an axial position adjusting member 90, a second step 122 is provided in the lower housing 12, a third step 81 is provided on the output shaft 80, and the axial position adjusting member 90 is located between a surface wall of the second step 122 and a surface wall of the third step 81. In order to make the output shaft 80 supported by the lower housing 12 in the axial direction after assembly, the second step 122 in the lower housing and the third step 81 on the output shaft 80 are used to limit the position of the output shaft 80, and the thickness of the axial position adjusting member 90 is used to adjust the distance between the second step 122 and the third step 81, so that the upper surface of the output shaft 80 can reliably abut against the lower surface of the planetary gear, and thus the cylindrical protrusion 61 on the planetary gear can be prevented from coming out of the connecting hole of the output shaft 80.
As shown in fig. 7, in this embodiment, a first protrusion 111, a second protrusion 112, and a plurality of third protrusions 113 are disposed on a surface of the upper housing 11 facing away from the output shaft 80, the first protrusion 111 and the second protrusion 112 are annular protrusions with unequal radii, a center of the first protrusion 111 coincides with a center of the second protrusion 112, the third protrusions 113 are arranged along a circumferential direction of the first protrusion 111, and the third protrusions 113 extend from a center of the first protrusion 111 in a direction away from the center of the first protrusion 111. In which the upper housing 11 is a generally circular flat plate structure. The aforementioned respective protrusions are provided on the outer surface of the upper case 11. The protrusions form a mesh structure in the form of concentric circles, and the third protrusions 113 are respectively connected with the first protrusions 111 and the second protrusions 112, so that the strength of each part of the upper shell 11 is uniform while the overall strength of the upper shell 11 is improved.
Example 2
The present embodiment provides a new energy vehicle including the reduction motor described in embodiment 1.
As described above, only for the specific implementation manner of the present invention, those skilled in the art can clearly understand that, for convenience and simplicity of description, the specific working process of the system, the module and the unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be described again here. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered by the scope of the present invention.
Claims (10)
1. Gear motor, its characterized in that includes:
a housing provided with an accommodating cavity;
the mounting bracket is positioned in the accommodating cavity and is fixedly connected with the shell;
the stator assembly is positioned in the accommodating cavity and is fixedly connected with the shell;
the rotor is positioned in the accommodating cavity;
the input shaft at least comprises a first section, a second section and a third section, the axis of the outer surface of the second section is parallel to the axis of the outer surface of the first section and is away from the axis of the outer surface of the first section by a preset distance, the first section is rotationally connected with the mounting bracket through a first bearing, the axis of the third section is on the same straight line with the axis of the first section, and the rotor is fixedly connected with the first section;
the planetary gear is rotationally connected with the second section through a second bearing, and cylindrical bulges arrayed along the circumferential direction of the planetary gear are arranged on the planetary gear;
the inner gear ring is fixedly connected with the shell and is meshed with the planetary gear;
the output shaft is rotatably connected with the third subsection through a third bearing, connecting holes arrayed along the circumferential direction of the output shaft are formed in the output shaft, and at least one part of the cylindrical protrusion penetrates into the connecting holes.
2. The geared motor of claim 1, wherein the housing comprises an upper housing and a lower housing, and the upper housing is detachably connected to the lower housing.
3. The reduction motor according to claim 2, wherein a first step is provided in the lower housing, the first step includes a first surface wall and a second surface wall that are connected, a limit ring is provided on the mounting bracket, an outer wall of the limit ring abuts against the second surface wall, and a surface of the mounting bracket facing the output shaft overlaps the first surface wall.
4. The reduction motor according to claim 3, wherein the mounting bracket includes a first mounting portion protruding from a surface of the mounting bracket facing the upper housing toward the upper housing and a second mounting portion protruding from a surface of the mounting bracket facing the output shaft toward the output shaft, the first mounting portion and the second mounting portion define a semi-enclosed receiving cavity, and the first bearing is disposed in the receiving cavity.
5. The geared motor of claim 4, wherein the mounting bracket further comprises a connecting portion extending from the second mounting portion in a direction away from the first bearing to a position where the stop collar is engaged.
6. The geared motor according to claim 5, wherein the number of the connection portions is plural, and the plural connection portions are provided on the mounting bracket in a radial shape centering on a central axis of the retainer ring.
7. The reduction motor according to claim 2, further comprising an axial position adjusting member, wherein a second step is provided in the lower housing, and a third step is provided on the output shaft, the axial position adjusting member being located between a surface wall of the second step and a surface wall of the third step.
8. The reduction motor according to claim 2, wherein a first protrusion, a second protrusion, and a plurality of third protrusions are provided on a surface of the upper housing facing away from the output shaft, the first protrusion and the second protrusion are annular protrusions having unequal radii, a center of the first protrusion coincides with a center of the second protrusion, the third protrusions are arranged along a circumferential direction of the first protrusion, and the third protrusions extend from a center of the first protrusion in a direction away from a center of the first protrusion.
9. The reduction motor according to any one of claims 1 to 8, wherein the stator assembly surrounds an outer periphery of the rotor.
10. The new energy vehicle, characterized by comprising the reduction motor of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287412.4U CN218124493U (en) | 2022-05-26 | 2022-05-26 | Speed reduction motor and new forms of energy car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287412.4U CN218124493U (en) | 2022-05-26 | 2022-05-26 | Speed reduction motor and new forms of energy car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218124493U true CN218124493U (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221287412.4U Active CN218124493U (en) | 2022-05-26 | 2022-05-26 | Speed reduction motor and new forms of energy car |
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| Country | Link |
|---|---|
| CN (1) | CN218124493U (en) |
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- 2022-05-26 CN CN202221287412.4U patent/CN218124493U/en active Active
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Effective date of registration: 20231011 Address after: 201800 Room 307, 3rd Floor, Building 3, No. 1399 Shengzhu Road, Jiading District, Shanghai Patentee after: Yuchuan (Shanghai) Transmission Technology Co.,Ltd. Address before: 226400 Factory Building 3, Intelligent Electromechanical Industrial Park, No. 588, Changjiang West Road, Juegang Street, Nantong, Jiangsu Patentee before: Jiangsu Yuchuan New Energy Technology Co.,Ltd. |