WO2022110448A1 - 一种微型驱动电机 - Google Patents
一种微型驱动电机 Download PDFInfo
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- WO2022110448A1 WO2022110448A1 PCT/CN2020/139820 CN2020139820W WO2022110448A1 WO 2022110448 A1 WO2022110448 A1 WO 2022110448A1 CN 2020139820 W CN2020139820 W CN 2020139820W WO 2022110448 A1 WO2022110448 A1 WO 2022110448A1
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- Prior art keywords
- wall
- bottom wall
- plate
- metal side
- side plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
Definitions
- the present application relates to the technical field of motor products, and in particular, to a miniature drive motor.
- a general micro drive motor includes a mounting case, a rotating component and a driving component housed in the mounting case; the micro driving motor drives the rotating component to rotate through the conductive drive component according to the electromagnetic principle, thereby driving the cooling liquid to circulate and take away the working heat of electronic products , to achieve the cooling function.
- the shell wall of the installation shell separates the drive assembly and the rotating assembly into different accommodating cavities. Based on the strength requirements of the shell wall and limited by the molding process level of the shell wall, the thickness of the shell wall is large, which will make the drive assembly and the rotating assembly. Larger gaps between rotating components result in reduced driving force.
- the purpose of the present application is to provide a micro drive motor to solve the technical problem in the prior art that the driving force of the micro drive motor is reduced due to the large gap between the rotating component and the driving component.
- a micro drive motor includes a mounting case, a rotating assembly and a driving assembly accommodated in the mounting case;
- the installation shell includes a main shell and an inner shell arranged in the main shell, the main shell has a top wall, a bottom wall opposite to the top wall and arranged at intervals, and a bottom wall bent from the top wall A peripheral wall extending to the bottom wall;
- the inner casing includes a top plate disposed opposite to the bottom wall and a metal side plate arranged around the top plate and fixed with the bottom wall, and the metal side plate is connected to the bottom wall.
- the peripheral walls are opposite and spaced apart, the top wall, the bottom wall, the peripheral wall, the top plate and the metal side plate form a first receiving cavity, and the metal side plate and the top plate enclose a second cavity. an accommodating cavity, the second accommodating cavity and the first accommodating cavity are separated by the top plate and the metal side plate;
- the driving component is accommodated in the second accommodating cavity and is fixed on the metal side plate;
- the rotating component is arranged around the outer circumference of the metal side plate and is accommodated in the first accommodating cavity and can surround the metal side plate.
- An impeller rotated by the driving assembly; one of the driving assembly and the rotating assembly has a coil winding, and the other has a magnetic steel matched with the coil winding.
- the metal side plate includes an annular side wall facing the peripheral wall, and a first folded edge formed by bending and extending from an end of the annular side wall away from the top plate in a direction away from the driving assembly; A second folded edge formed by bending and extending from the end of the annular side wall away from the bottom wall toward the direction of the driving assembly, the first folded edge is fixed to the bottom wall, and the second folded edge is connected to the top plate fixed.
- the outer wall surface of the bottom wall away from the top wall is provided with a first installation groove for accommodating the first folding edge
- the plate surface of the top plate away from the bottom wall is provided with a first installation groove for accommodating the first folding edge.
- the second installation groove of the second folded edge is provided.
- first folded edge is flush with the outer wall surface of the bottom wall away from the top wall; the second folded edge is flush with the board surface of the top plate away from the bottom wall.
- the bottom wall abuts on a side of the annular side wall away from the driving assembly
- the top plate abuts on a side of the annular side wall close to the driving assembly.
- the metal side plate is integrally formed with the top plate and the bottom wall.
- the top plate includes a plate body connected with the metal side plate and a main shaft formed by protruding from the plate body in a direction away from the top wall, and the annular side wall is wound around the main shaft. and set at an interval with the main shaft;
- the drive assembly includes an iron core skeleton and the coil windings arranged on the iron core skeleton.
- the iron core skeleton includes a fixed ring sleeved on the main shaft, a plurality of circumferential directions of the fixed ring.
- a fixed plate arranged and spaced from the fixed ring, and an iron core connected between the fixed plate and the fixed ring, the iron core extending along the radial direction of the fixed ring and spaced apart from each other, so
- the coil winding is sleeved on the iron core.
- the impeller is rotatably connected to the top plate, and the rotating assembly includes a magnetic steel surrounding the metal side plate, and the magnetic steel is fixed to the impeller and interacts with the coil winding to drive the impeller to rotate. .
- the drive motor further includes a rotating shaft fixed on the top plate;
- the impeller includes an end cover rotatably sleeved on the rotating shaft, and a surrounding wall bent and extended from the side of the end cover away from the rotating shaft , and a blade extending in the radial direction of the surrounding wall from the side of the surrounding wall away from the rotating shaft, the surrounding wall is annularly arranged on the outer circumference of the magnetic steel and fixed with the magnetic steel, so The blades are arranged at intervals along the circumference of the surrounding wall.
- a side of the top plate close to the top wall is recessed in a direction away from the top wall to form a limiting groove extending into the main shaft;
- the end cover includes a cover body disposed on the side of the top plate close to the top wall, and a limit column extending from the cover body and accommodated in the limit groove, and the rotating shaft is fixed to the main shaft and accommodated in the limiting slot, and the limiting column is rotatably connected with the rotating shaft.
- one end of the impeller away from the metal side plate is spaced from the mounting shell to form a liquid-accommodating cavity
- the mounting shell is provided with a liquid inlet and a liquid outlet respectively communicating with the containing cavity
- the liquid inlet and the liquid outlet are arranged at intervals, and the rotation of the blade drives the liquid in the receiving cavity to flow toward the liquid outlet.
- the metal side plate surrounds the top plate and is fixed to the bottom wall of the outer casing, so as to seal and isolate the first accommodating cavity and the second accommodating cavity from the top plate;
- the peripheral walls are relatively spaced apart, the driving component accommodates the first accommodating cavity and is fixed to the metal side plate, and the rotating component is arranged around the outer circumference of the metal side plate. Therefore, the distance between the rotating component and the metal side plate plus the thickness of the metal side plate, That is, the distance between the rotating component and the driving component; the impeller accommodated in the first accommodating cavity rotates around the driving component under the interaction of the coil winding and the magnetic steel.
- the thickness of the metal side plate can be made smaller; by using the metal side plate with higher hardness and smaller thickness, the strength of the entire installation shell is not only guaranteed, but also the magnetic rotating components and the drive are reduced.
- the distance between the components is solved by using the technical solution to solve the technical problem of reducing the driving force of the miniature drive motor in the prior art due to the large gap between the rotating component and the driving component.
- FIG. 1 is a schematic diagram of the overall structure of a micro-drive motor of the application
- Fig. 2 is the exploded structure schematic diagram of Fig. 1;
- Figure 3 is a schematic diagram of the exploded structure of the inner casing
- Fig. 4 is the structural representation of outer casing
- Fig. 5 is the sectional view of the direction B-B in Fig. 4;
- Fig. 6 is the sectional view of A-A direction in Fig. 1;
- FIG. 7 is a partial enlarged view of C in FIG. 6 .
- a micro drive motor 100 includes a mounting shell 10, a rotating assembly 20 and a driving assembly 30 accommodated in the mounting shell 10; the rotating assembly 20 is rotatably disposed in the mounting shell 10, and the driving assembly 30 Then it is used to drive the rotating assembly 20 to rotate.
- the mounting shell 10 includes a main casing 11 and an inner casing 12 disposed in the main casing 11.
- the main casing 11 has a top wall 11b, a bottom wall 11c opposite and spaced from the top wall 11b, and a bottom wall 11c from the top wall 11b.
- the inner casing 12 includes a top plate 121 arranged opposite to the bottom wall 11c and a metal side plate 122 arranged around the top plate 121 and fixed to the bottom wall 11c, and the metal side plate 122 is connected to the peripheral wall 11a are arranged opposite and spaced apart.
- the top wall 11b, the bottom wall 11c, the peripheral wall 11a, the top plate 121 and the metal side plate 122 form a first receiving cavity 10a.
- the metal side plate 122 and the top plate 121 enclose a second receiving cavity 10b.
- the second receiving cavity The top plate 121 and the metal side plate 122 are separated from the first accommodating cavity 10a.
- the driving component 30 is accommodated in the second accommodating cavity 10b and fixed to the metal side plate 122 ; the rotating component 20 is wound around the outer circumference of the metal side plate 122 and includes an impeller 22 accommodated in the first accommodating cavity 10a and rotatable around the driving component 30 . ; One of the driving assembly 30 and the rotating assembly 20 has a coil winding 32 , and the other has a magnetic steel 21 that matches the coil winding 32 .
- the metal side plate 122 surrounds the top plate 121 and is fixed with the bottom wall 11c of the main casing 11 to seal and isolate the first accommodating cavity 10a and the second accommodating cavity 10b from the top plate 121;
- the peripheral walls 11a of the housing 11 are relatively spaced apart.
- the driving component 30 accommodates the second accommodating cavity 10b and is fixed to the metal side plate 122 .
- the rotating component 20 is wound around the outer circumference of the metal side plate 122 . Therefore, the rotating component 20 and the metal side plate 122 The distance between the two plus the thickness of the metal side plate 122 is the distance between the rotating component 20 and the driving component 30;
- the drive assembly 30 rotates.
- the thickness of the metal side plate 122 can be made smaller; by using the metal side plate 122 with higher hardness and smaller thickness, the strength of the entire installation shell 10 is not only ensured, but also reduced.
- the distance between the rotating assembly 20 and the driving assembly 30 is solved by using this technical solution to solve the technical problem that the driving force of the micro drive motor 100 is reduced due to the large gap between the rotating assembly 20 and the driving assembly 30 in the prior art. .
- the metal side plate 122 can be made of steel material to ensure the hardness of the metal side plate 122 .
- the driving force can be strengthened by increasing the number of turns of the coil winding 32 and increasing the magnetic flux of the magnetic steel 21; therefore, the space saved by using the metal side plate 122 with high hardness and small thickness can be used to increase the size of the coil winding 32 or The size of the magnet 21 can effectively improve the driving force.
- the metal side plate 122 includes an annular side wall 1221 facing the peripheral wall 11a and a direction away from the driving assembly 30 from an end of the annular side wall 1221 away from the top plate 121
- a first folded edge 1222 formed by bending and extending and a second folded edge 1223 formed by bending and extending from an end of the annular side wall 1221 away from the bottom wall 11c toward the driving assembly 30 .
- the annular side wall 1221 of the metal side plate 122 is spaced apart from the peripheral wall 11a of the main casing 11, the steel side plate 122 is fixedly connected to the bottom wall 11c of the main casing 11 through the first folding edge 1222, and is connected to the bottom wall 11c of the main casing 11 through the second folding edge 1223.
- the top plate 121 is fixedly connected.
- the outer wall surface of the bottom wall 11c away from the top wall 11b is provided with a first installation groove 11c1 for accommodating the first folding edge 1222
- the plate surface of the top plate 121 away from the bottom wall 11c is provided with a second mounting groove 11c1 for accommodating the second edge 1222.
- the second installation groove 121a of the folded edge 1223 By accommodating and fixing the first folded edge 1222 in the first installation groove 11c1, the thickness of the bottom wall 11c of the main casing 11 is prevented from increasing due to the first folded edge 1222; by accommodating and fixing the second folded edge 1223 in In the second installation groove 121a, the thickness of the top plate 121 is prevented from being increased due to the second folding edge 1223.
- the first folded edge 1222 is flush with the outer wall surface of the bottom wall 11c away from the top wall 11b, on the one hand to ensure that the first folded edge 1222 does not affect the thickness of the bottom wall 11c,
- the connection between a folded edge 1222 and the bottom wall 11c is aesthetically pleasing.
- the second folded edge 1223 is flush with the surface of the top plate 121 away from the bottom wall 11c, on the one hand to ensure that the second folded edge 1223 does not affect the thickness of the top plate 121, and on the other hand to ensure the connection between the second folded edge 1223 and the top plate 121 Aesthetics.
- the bottom wall 11c abuts on the side of the annular side wall 1221 away from the driving assembly 30, and the top plate 121 abuts on the side of the annular side wall 1221 close to the driving assembly 30, so as to ensure that the bottom wall 11c and the annular
- the side walls 1221 are seamlessly connected, and the top plate 121 and the annular side wall 1221 are seamlessly connected, and at the same time, the gap between the rotating component 20 and the driving component 30 can be reduced.
- the metal side plate 122 is integrally formed with the top plate 121 and the bottom wall 11c .
- the top plate 121 includes a plate body 1211 connected to the metal side plate 122 , and a main shaft 1212 protruding from the plate body 1211 in a direction away from the top wall 11 b , and the annular side wall 1221 is wound around
- the drive assembly 30 includes an iron core skeleton 31 and a coil winding 32 arranged on the iron core skeleton 31.
- the iron core skeleton 31 includes a fixing ring 311 sleeved on the main shaft 1212, a plurality of A fixed plate 312 arranged along the circumference of the fixed ring 311 and spaced from the fixed ring 311 and an iron core 313 connected between the fixed plate 312 and the fixed ring 311, the iron core 313 extending along the radial direction of the fixed ring 311 and mutually
- the coil windings 32 are sleeved on the iron core 313 at intervals.
- the coil windings 32 are uniformly circumferentially arranged in the second accommodating cavity 10b through the iron core skeleton 31. Therefore, the distance between the rotating assembly 20 and the annular side wall 1221, the thickness of the annular side wall 1221, and the thickness of the fixing plate 312 The sum of the three is the gap between the coil winding 32 and the rotating assembly 20 .
- the impeller 22 is rotatably connected to the top plate 121 , and the rotating assembly 20 includes a magnetic steel 21 surrounding the metal side plate 122 .
- the magnetic steel 21 is fixed to the impeller 22 and interacts with the coil winding 32 to drive the impeller 22 to rotate.
- the miniature drive motor 100 further includes a circuit board 50 which is arranged on the mounting shell 10 and is electrically connected with the coil winding 32; when the circuit board 50 is connected with the coil winding 32, the current passes through the coil winding 32 to generate an alternating magnetic field, and the magnetic steel 21 is in the ampere force. Under the action, the impeller 22 will be driven to rotate.
- a circuit board 50 which is arranged on the mounting shell 10 and is electrically connected with the coil winding 32; when the circuit board 50 is connected with the coil winding 32, the current passes through the coil winding 32 to generate an alternating magnetic field, and the magnetic steel 21 is in the ampere force. Under the action, the impeller 22 will be driven to rotate.
- the micro drive motor 100 further includes a rotating shaft 40 fixed on the top plate 121 , and the impeller 22 includes an end cover 223 rotatably sleeved on the rotating shaft 40 , and the end cover 223 is away from the rotating shaft 40 .
- the surrounding wall 222 is bent and extended from one side of the surrounding wall 222, and the blades 221 are extended along the radial direction of the surrounding wall 222 from the side of the surrounding wall 222 away from the rotating shaft 40.
- the steel 21 is fixed, and the blades 221 are arranged at intervals along the circumference of the surrounding wall 222 .
- the rotating shaft 40 and the top plate 121 can be fixedly connected by secondary injection molding, and the surrounding wall 222 can be fixedly connected with the magnetic steel 21 by gluing; the magnetic steel 21 is driven by the driving assembly 30 to drive the impeller 22 to rotate around the rotating shaft 40 .
- the side of the top plate 121 close to the top wall 11b is recessed in a direction away from the top wall 11b to form a limiting groove 121b extending into the main shaft 1212;
- the cover 2231 and the limit post 2232 extending from the cover 2231 and accommodated in the limit slot 121b, the rotating shaft 40 and the main shaft 1212 are fixed and accommodated in the limit slot 121b, and the limit post 2232 is rotatably connected with the rotating shaft 40 to ensure The impeller 22 is stably rotated relative to the drive assembly 30 .
- one end of the impeller 22 away from the metal side plate 122 is spaced from the mounting shell 10 to form a receiving cavity 10e for containing liquid, and the mounting shell 10 is provided with liquid inlets respectively communicating with the receiving cavity 10e.
- 10c and the liquid outlet 10d the liquid inlet 10c and the liquid outlet 10d are arranged at intervals, and the rotation of the blade 221 drives the liquid in the receiving cavity 10e to flow toward the liquid outlet 10d.
- the current passes through the coil winding 32 to generate an alternating magnetic field, and the magnetic steel 21 will drive the impeller 22 to rotate under the action of the ampere force, so that the blade 221 can drive the liquid to circulate and take away the working heat of the electronic product. Realize the cooling function.
- the main casing 11 includes a base 111 and an upper cover 112 covering the base 111, the upper cover 112 has a top wall 11b and a peripheral wall 112a surrounding the top wall 11b
- the base 111 has a bottom wall 11c and a lower peripheral wall 111a surrounding the bottom wall 11c, and the upper peripheral wall 112a is connected with the lower peripheral wall 111a to form the peripheral wall 11a.
- the peripheral wall 11a is recessed to form a contoured groove 11a1 for receiving the blade 221 .
- the micro drive motor 100 further includes a sealing ring 60 disposed between the upper cover 112 and the base 111 , the upper cover 112 is provided with a sealing groove 112b surrounding the flow chamber, and the sealing ring 60 is accommodated in the sealing groove 112b, so that the upper cover 112 is sealed with the base 111.
- the liquid inlet 10c and the liquid outlet 10d are provided on the base 111 .
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Abstract
本申请提供了一种微型驱动电机，包括安装壳及收容于安装壳内的转动组件和驱动组件；安装壳包括主壳体和内壳体，主壳体具有顶壁、与顶壁间隔设置的底壁以及设置在顶壁与底壁之间的周壁；内壳体包括与底壁相对间隔设置的顶板和环绕顶板设置并与底壁固定的金属侧板，且金属侧板与周壁相对间隔设置，顶壁、底壁、周壁、顶板以及金属侧板形成第一收容腔，金属侧板与顶板形成与第一收容腔分隔的第二收容腔；驱动组件收容于第二收容腔并固定于金属侧板；转动组件绕设于金属侧板外周且包括收容于第一收容腔并可环绕驱动组件转动的叶轮。运用本技术方案解决了现有技术中微型驱动电机因转动组件与驱动组件的之间的间隙较大而导致驱动力减小的技术问题。
Description
本申请涉及电机产品技术领域，尤其涉及一种微型驱动电机。
一般的微型驱动电机包括安装壳和收容于安装壳内的转动组件、驱动组件；微型驱动电机根据电磁原理，通过导电的驱动组件驱动转动组件转动，从而带动冷却液循环，带走电子产品工作热量，实现散热功能。
其中，安装壳的壳壁将驱动组件和转动组件分隔于不同的收容腔中，基于壳壁的强度要求和受限于壳壁的成型工艺水平，壳壁的厚度较大，会使得驱动组件与转动组件之间的间隙较大，进而导致驱动力减小。
本申请的目的在于提供一种微型驱动电机，以解决现有技术中微型驱动电机因转动组件与驱动组件的之间的间隙较大而导致驱动力减小的技术问题。
本申请的技术方案如下：一种微型驱动电机包括安装壳以及收容于所述安装壳内的转动组件和驱动组件；
所述安装壳包括主壳体和设于所述主壳体内的内壳体，所述主壳体具有顶壁、与所述顶壁相对且间隔设置的底壁以及自所述顶壁弯折延伸至所述底壁的周壁；所述内壳体包括与所述底壁相对间隔设置的顶板和环绕所述顶板设置并与所述底壁固定的金属侧板，且所述金属侧板与所述周壁相对且间隔设置，所述顶壁、所述底壁、所述周壁、所述顶板以及所述金属侧板形成第一收容腔，所述金属侧板与所述顶板围成第二收容腔，所述第二收容腔与所述第一收容腔由所述顶板及所述金属侧板分隔；
其中，所述驱动组件收容于所述第二收容腔并固定于所述金属侧板；所述转动组件绕设于所述金属侧板外周且包括收容于所述第一收容腔并可环绕所述驱动组件转动的叶轮；所述驱动组件与所述转动组件中的其中一个具有线圈绕组，另一个具有与所述线圈绕组匹配的磁钢。
进一步地，所述金属侧板包括与所述周壁正对的环形侧壁和自所述环形侧壁的远离所述顶板的一端朝向远离所述驱动组件方向弯折延伸形成的第一折边和自所述环形侧壁远离所述底壁的一端朝向驱动组件方向弯折延伸形成的第二折边，所述第一折边与所述底壁固定，所述第二折边与所述顶板固定。
进一步地，所述底壁的远离所述顶壁的外壁面开设有用于收容所述第一折边的第一安装槽，所述顶板的远离所述底壁的板面开设有用于收容所述第二折边的第二安装槽。
进一步地，所述第一折边与所述底壁的远离所述顶壁的外壁面齐平；所述第二折边与所述顶板的远离所述底壁的板面齐平。
进一步地，所述底壁抵接于所述环形侧壁远离所述驱动组件的一侧，所述顶板抵接于所述环形侧壁靠近所述驱动组件的一侧。
进一步地，所述金属侧板与所述顶板及所述底壁一体成型。
进一步地，所述顶板包括与所述金属侧板连接的板体和自所述板体朝远离所述顶壁的方向凸起形成的主轴，且所述环形侧壁绕设于所述主轴外并与所述主轴间隔设置；
所述驱动组件包括铁芯骨架和设于所述铁芯骨架上的所述线圈绕组，所述铁芯骨架包括套设在所述主轴上的固定环、多个沿所述固定环的周向排布并与所述固定环间隔设置的固定板以及连接在所述固定板与所述固定环之间的铁芯，所述铁芯沿所述固定环的径向延伸且相互间隔设置，所述线圈绕组套设在所述铁芯上。
进一步地，所述叶轮与所述顶板转动连接，所述转动组件包括环绕所述金属侧板的磁钢，所述磁钢固定于所述叶轮并与所述线圈绕组相互作用带动所述叶轮转动。
进一步地，所述驱动电机还包括固定于所述顶板的转轴；所述叶轮包括转动套设于所述转轴的端盖、自所述端盖远离所述转轴的一侧弯折延伸的围壁、以及自所述围壁远离所述转轴的一侧沿所述围壁的径向延伸的叶片，所述围壁呈环状绕设于所述磁钢外周并与所述磁钢固定，所述叶片沿所述围壁的周向间隔排布。
进一步地，所述顶板靠近所述顶壁的一侧朝远离所述顶壁的方向凹陷形成延伸至所述主轴内的限位槽；
所述端盖包括盖设于所述顶板靠近所述顶壁一侧的盖体和自所述盖体延伸并收容于所述限位槽内的限位柱，所述转轴与所述主轴固定并收容于所述限位槽内，所述限位柱与所述转轴转动连接。
进一步地，所述叶轮远离所述金属侧板的一端与所述安装壳间隔形成收容液体的收容腔，所述安装壳贯穿开设有分别与所述收容腔连通的进液口和出液口，所述进液口与所述出液口间隔设置，所述叶片转动带动所述收容腔内的液体朝所述出液口流动。
本申请的有益效果在于：在本申请中，金属侧板环绕顶板并与外壳体的底壁固定，以和顶板密封隔离第一收容腔和第二收容腔；同时，金属侧板与外壳体的周壁相对间隔设置，驱动组件收容第一收容腔并固定于金属侧板，转动组件则绕设于金属侧板外周，因此，转动组件与金属侧板之间的距离加上金属侧板的厚度，即为转动组件与驱动组件之间距离；收容于第一收容腔的叶轮则在线圈绕组和磁钢的相互作用下环绕驱动组件转动。基于金属侧板硬度高的物理性质，可将金属侧板厚度做小；通过采用硬度较高厚度较小的金属侧板，既保证了整个安装壳的强度，也减小了磁转动组件与驱动组件之间的距离，运用本技术方案解决了现有技术中微型驱动电机因转动组件与驱动组件的之间的间隙较大而导致驱动力减小的技术问题。
图1为本申请的一种微型驱动电机的整体结构示意图；
图2为图1的分解结构示意图；
图3为内壳体的分解结构示意图；
图4为外壳体的结构示意图；
图5为图4中B-B方向的剖视图；
图6为图1中A-A方向的剖视图；
图7为图6中C处的局部放大图。
图中：
100、微型驱动电机；10、安装壳；10a、第一收容腔；10b、第二收容腔；10c、进液口；10d、出液口；10e、收容腔；11、主壳体；11a、周壁；11a1、仿形槽；11b、顶壁；11c、底壁；11c1、第一安装槽；111、底座；111a、下周壁；112、上盖；112a、上周壁；112b、密封槽；12、内壳体；121、顶板；121a、第二安装槽；121b、限位槽；1211、板体；1212、主轴；122、金属侧板；1221、环形侧壁；1222、第一折边；1223、第二折边；20、转动组件；21、磁钢；22、叶轮；221、叶片；222、围壁；223、端盖；2231、盖体；2232、限位柱；30、驱动组件；31、铁芯骨架；311、固定环；312、固定板；313、铁芯；32、线圈绕组；40、转轴；50、电路板；60、密封圈。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
应该指出，以下详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
下面结合附图和实施方式对本申请作进一步说明。参见图1-图7，一种微型驱动电机100，包括安装壳10以及收容于安装壳10内的转动组件20和驱动组件30；转动组件20可转动的设于安装壳10内，驱动组件30则用于驱动转动组件20转动。
其中，安装壳10包括主壳体11和设于主壳体11内的内壳体12，主壳体11具有顶壁11b、与顶壁11b相对且间隔设置的底壁11c以及自顶壁11b弯折延伸至底壁11c的周壁11a；内壳体12包括与底壁11c相对间隔设置的顶板121和环绕顶板121设置并与底壁11c固定的金属侧板122，且金属侧板122与周壁11a相对且间隔设置，顶壁11b、底壁11c、周壁11a、顶板121以及金属侧板122形成第一收容腔10a，金属侧板122与顶板121围成第二收容腔10b，第二收容腔10b与第一收容腔10a由顶板121及金属侧板122分隔。
其中，驱动组件30收容于第二收容腔10b并固定于金属侧板122；转动组件20绕设于金属侧板122外周且包括收容于第一收容腔10a并可环绕驱动组件30转动的叶轮22；驱动组件30与转动组件20中的其中一个具有线圈绕组32，另一个具有与线圈绕组32匹配的磁钢21。
在本申请中，金属侧板122环绕顶板121并与主壳体11的底壁11c固定，以和顶板121密封隔离第一收容腔10a和第二收容腔10b；同时，金属侧板122与主壳体11的周壁11a相对间隔设置，驱动组件30收容第二收容腔10b并固定于金属侧板122，转动组件20则绕设于金属侧板122外周，因此，转动组件20与金属侧板122之间的距离加上金属侧板122的厚度，即为转动组件20与驱动组件30之间距离；收容于第一收容腔10a的叶轮22则在线圈绕组32和磁钢21的相互作用下环绕驱动组件30转动。基于金属侧板122硬度高的物理性质，可将金属侧板122厚度做小；通过采用硬度较高、厚度较小的金属侧板122，既保证了整个安装壳10的强度，也减小了转动组件20与驱动组件30之间的距离，运用本技术方案解决了现有技术中微型驱动电机100因转动组件20与驱动组件30的之间的间隙较大而导致驱动力减小的技术问题。
其中，金属侧板122可以由钢材料构成，保证金属侧板122的硬度。
基于微型驱动电机100的驱动原理，通过加强线圈绕组32产生的磁场可产生更大的安培力，以提高微型驱动电机100的驱动性能。其中，可通过增加线圈绕组32的匝数、提高磁钢21的磁通量来加强驱动力；因此，通过采用硬度高厚度小的金属侧板122而节约的空间，可用于增加线圈绕组32的尺寸或磁钢21的尺寸，从而有效提升驱动力。
参见图3、图5-图7，在一种实施例中，金属侧板122包括与周壁11a正对的环形侧壁1221和自环形侧壁1221的远离顶板121的一端朝向远离驱动组件30方向弯折延伸形成的第一折边1222和自环形侧壁1221远离底壁11c的一端朝向驱动组件30方向弯折延伸形成的第二折边1223。即金属侧板122的环形侧壁1221与主壳体11的周壁11a间隔设置，钢侧板122通过第一折边1222与主壳体11的底壁11c固定连接，通过第二折边1223与顶板121固定连接。
在一种实施例中，底壁11c的远离顶壁11b的外壁面开设有用于收容第一折边1222的第一安装槽11c1，顶板121的远离底壁11c的板面开设有用于收容第二折边1223的第二安装槽121a。通过将第一折边1222收容固定于第一安装槽11c1中，以避免因第一折边1222而导致主壳体11的底壁11c的厚度增大；通过将第二折边1223收容固定于第二安装槽121a中，以避免因第二折边1223而到导致顶板121的厚度增大。
在一些具体实施例中，第一折边1222与底壁11c的远离顶壁11b的外壁面齐平，一方面保证第一折边1222不对底壁11c的厚度造成影响，另一方面以保持第一折边1222与底壁11c的连接美观性。第二折边1223与顶板121的远离底壁11c的板面齐平，一方面保证第二折边1223不对顶板121的厚度造成影响，另一方面以保证第二折边1223与顶板121的连接美观性。
在一些具体的实施例中，底壁11c抵接于环形侧壁1221远离驱动组件30的一侧，顶板121抵接于环形侧壁1221靠近驱动组件30的一侧，以保证底壁11c和环形侧壁1221之间无缝相接、顶板121与环形侧壁1221之间无缝相接，同时可以减小转动组件20与驱动组件30之间的间隙。
在一些具体的实施例中，金属侧板122与顶板121及底壁11c一体成型，具体地，第一折边1222与底壁11c注塑成型，第二折边1223与顶板121注塑成型。
具体参见图2、图3及图6，顶板121包括与金属侧板122连接的板体1211和自板体1211朝远离顶壁11b的方向凸起形成的主轴1212，且环形侧壁1221绕设于主轴1212外并与主轴1212间隔设置；驱动组件30包括铁芯骨架31和设于铁芯骨架31上的线圈绕组32，铁芯骨架31包括套设在主轴1212上的固定环311、多个沿固定环311的周向排布并与固定环311间隔设置的固定板312以及连接在固定板312与固定环311之间的铁芯313，铁芯313沿固定环311的径向延伸且相互间隔设置，线圈绕组32套设在铁芯313上。
即线圈绕组32通过铁芯骨架31均匀周向的布置于第二收容腔10b中，因此，转动组件20与环形侧壁1221之间的距离、环形侧壁1221的厚度、以及固定板312的厚度三者之和为线圈绕组32与转动组件20的间隙。
在一种实施例中，叶轮22与顶板121转动连接，转动组件20包括环绕金属侧板122的磁钢21，磁钢21固定于叶轮22并与线圈绕组32相互作用带动叶轮22转动。
微型驱动电机100还包括设于安装壳10上并与线圈绕组32电连接的电路板50；当电路板50与线圈绕组32连通，电流通过线圈绕组32产生交变磁场，磁钢21在安培力作用下会带动叶轮22旋转。
参见图2及图6，在一些具体的实施例中，微型驱动电机100还包括固定于顶板121的转轴40，叶轮22包括转动套设于转轴40的端盖223、自端盖223远离转轴40的一侧弯折延伸的围壁222、以及自围壁222远离转轴40的一侧沿围壁222的径向延伸的叶片221，围壁222呈环状绕设于磁钢21外周并与磁钢21固定，叶片221沿围壁222的周向间隔排布。
其中，转轴40与顶板121可通过二次注塑固定连接，围壁222可通过胶合的方式与磁钢21固定连接；磁钢21在驱动组件30的驱动下，以带动叶轮22绕着转轴40转动。
在一种实施例中，顶板121靠近顶壁11b一侧朝远离顶壁11b的方向凹陷形成延伸至主轴1212内的限位槽121b；端盖223包括盖设于顶板121靠近顶壁11b一侧的盖体2231和自盖体2231延伸并收容于限位槽121b的限位柱2232，转轴40与主轴1212固定并收容于限位槽121b内，限位柱2232与转轴40转动连接，从而保证叶轮22稳定的相对驱动组件30转动。
在一些具体的实施例中，参见图6，叶轮22远离金属侧板122的一端与安装壳10间隔形成收容液体的收容腔10e，安装壳10贯穿开设有分别与收容腔10e连通的进液口10c和出液口10d，进液口10c与出液口10d间隔设置，叶片221转动带动收容腔10e内的液体朝出液口10d流动。当电路板50与线圈绕组32连通，电流通过线圈绕组32产生交变磁场，磁钢21在安培力作用下会带动叶轮22旋转，从而叶片221可带动液体流动循环，带走电子产品工作热量，实现散热功能。
参见图2和图5，在一种实施例中，主壳体11包括底座111和盖合于底座111的上盖112，上盖112具有顶壁11b和环绕顶壁11b设置的上周壁112a，底座111具有底壁11c和环绕底壁11c设置的下周壁111a，上周壁112a与下周壁111a相接形成周壁11a。
在一些具体的实施例中，周壁11a凹陷形成用于收容叶片221的仿形槽11a1。
在一些具体的实施例中，微型驱动电机100还包括设置在上盖112与底座111之间的密封圈60，上盖112开设有环绕流动腔设置的密封槽112b，密封圈60收容于密封槽112b内，使得上盖112与底座111密封连接。
在一些具体的实施例中，进液口10c和出液口10d开设在底座111上。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
以上的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。
Claims (11)
- 一种微型驱动电机，其特征在于，包括安装壳以及收容于所述安装壳内的转动组件和驱动组件；所述安装壳包括主壳体和设于所述主壳体内的内壳体，所述主壳体具有顶壁、与所述顶壁相对且间隔设置的底壁以及自所述顶壁弯折延伸至所述底壁的周壁；所述内壳体包括与所述底壁相对间隔设置的顶板和环绕所述顶板设置并与所述底壁固定的金属侧板，且所述金属侧板与所述周壁相对且间隔设置，所述顶壁、所述底壁、所述周壁、所述顶板以及所述金属侧板形成第一收容腔，所述金属侧板与所述顶板围成第二收容腔，所述第二收容腔与所述第一收容腔由所述顶板及所述金属侧板分隔；其中，所述驱动组件收容于所述第二收容腔并固定于所述金属侧板；所述转动组件绕设于所述金属侧板外周且包括收容于所述第一收容腔并可环绕所述驱动组件转动的叶轮；所述驱动组件与所述转动组件中的其中一个具有线圈绕组，另一个具有与所述线圈绕组匹配的磁钢。
- 根据权利要求1所述的微型驱动电机，其特征在于，所述金属侧板包括与所述周壁正对的环形侧壁、自所述环形侧壁的远离所述顶板的一端朝向远离所述驱动组件方向弯折延伸形成的第一折边和自所述环形侧壁远离所述底壁的一端朝向驱动组件方向弯折延伸形成的第二折边，所述第一折边与所述底壁固定，所述第二折边与所述顶板固定。
- 根据权利要求2所述的微型驱动电机，其特征在于，所述底壁的远离所述顶壁的外壁面开设有用于收容所述第一折边的第一安装槽，所述顶板的远离所述底壁的板面开设有用于收容所述第二折边的第二安装槽。
- 根据权利要求3所述的微型驱动电机，其特征在于，所述第一折边与所述底壁的远离所述顶壁的外壁面齐平；所述第二折边与所述顶板的远离所述底壁的板面齐平。
- 根据权利要求4所述的微型驱动电机，其特征在于，所述底壁抵接于所述环形侧壁远离所述驱动组件的一侧，所述顶板抵接于所述环形侧壁靠近所述驱动组件的一侧。
- 根据权利要求5所述的微型驱动电机，其特征在于，所述金属侧板与所述顶板及所述底壁一体成型。
- 根据权利要求2-6中任一项所述的微型驱动电机，其特征在于，所述顶板包括与所述金属侧板连接的板体和自所述板体朝远离所述顶壁的方向凸起形成的主轴，且所述环形侧壁绕设于所述主轴外并与所述主轴间隔设置；所述驱动组件包括铁芯骨架和设于所述铁芯骨架上的所述线圈绕组，所述铁芯骨架包括套设在所述主轴上的固定环、多个沿所述固定环的周向排布并与所述固定环间隔设置的固定板以及连接在所述固定板与所述固定环之间的铁芯，所述铁芯沿所述固定环的径向延伸且相互间隔设置，所述线圈绕组套设在所述铁芯上。
- 根据权利要求7所述的微型驱动电机，其特征在于，所述叶轮与所述顶板转动连接，所述转动组件包括环绕所述金属侧板的磁钢，所述磁钢固定于所述叶轮并与所述线圈绕组相互作用带动所述叶轮转动。
- 根据权利要求8所述的微型驱动电机，其特征在于，所述驱动电机还包括固定于所述顶板的转轴；所述叶轮包括转动套设于所述转轴的端盖、自所述端盖远离所述转轴的一侧弯折延伸的围壁、以及自所述围壁远离所述转轴的一侧沿所述围壁的径向延伸的叶片，所述围壁呈环状绕设于所述磁钢外周并与所述磁钢固定，所述叶片沿所述围壁的周向间隔排布。
- 根据权利要求9所述的微型驱动电机，其特征在于，所述顶板靠近所述顶壁的一侧朝远离所述顶壁的方向凹陷形成延伸至所述主轴内的限位槽；所述端盖包括盖设于所述顶板靠近所述顶壁一侧的盖体和自所述盖体延伸并收容于所述限位槽内的限位柱，所述转轴与所述主轴固定并收容于所述限位槽内，所述限位柱与所述转轴转动连接。
- 根据权利要求10所述的微型驱动电机，其特征在于，所述叶轮远离所述金属侧板的一端与所述安装壳间隔形成收容液体的收容腔，所述安装壳贯穿开设有分别与所述收容腔连通的进液口和出液口，所述进液口与所述出液口间隔设置，所述叶片转动带动所述收容腔内的液体朝所述出液口流动。
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|---|---|---|---|---|
| CN203071785U (zh) * | 2012-09-29 | 2013-07-17 | 苏州贝腾特电子科技有限公司 | 一种微型驱动电机 |
| CN103280941A (zh) * | 2012-09-29 | 2013-09-04 | 苏州贝腾特电子科技有限公司 | 一种微型驱动电机 |
| US20140252890A1 (en) * | 2013-03-08 | 2014-09-11 | Cresyn Co., Ltd. | Vibration generation device |
| CN208589896U (zh) * | 2018-08-03 | 2019-03-08 | 瑞声科技（南京）有限公司 | 线性振动电机 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203071785U (zh) * | 2012-09-29 | 2013-07-17 | 苏州贝腾特电子科技有限公司 | 一种微型驱动电机 |
| CN103280941A (zh) * | 2012-09-29 | 2013-09-04 | 苏州贝腾特电子科技有限公司 | 一种微型驱动电机 |
| US20140252890A1 (en) * | 2013-03-08 | 2014-09-11 | Cresyn Co., Ltd. | Vibration generation device |
| CN208589896U (zh) * | 2018-08-03 | 2019-03-08 | 瑞声科技（南京）有限公司 | 线性振动电机 |
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