WO2010135921A1 - 一种电机外壳 - Google Patents

一种电机外壳 Download PDF

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Publication number
WO2010135921A1
WO2010135921A1 PCT/CN2010/070394 CN2010070394W WO2010135921A1 WO 2010135921 A1 WO2010135921 A1 WO 2010135921A1 CN 2010070394 W CN2010070394 W CN 2010070394W WO 2010135921 A1 WO2010135921 A1 WO 2010135921A1
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WO
WIPO (PCT)
Prior art keywords
end cover
rear end
cavity
stator
edge
Prior art date
Application number
PCT/CN2010/070394
Other languages
English (en)
French (fr)
Inventor
张旭
Original Assignee
中山大洋电机制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中山大洋电机制造有限公司 filed Critical 中山大洋电机制造有限公司
Publication of WO2010135921A1 publication Critical patent/WO2010135921A1/zh

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Classifications

    • 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
    • H02K5/08—Insulating casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the invention relates to a motor housing.
  • plastic-sealed motors are widely used, their insulation and integrity are relatively good, and the quality is stable, but there are still some problems: 1)
  • the bearing chambers of most plastic-sealed motors are generally made of metal materials, which are bolted, rivets or embedded during assembly. Fixed on the outer casing, its positioning accuracy is not high, the assembly process is high, and the noise is large during operation, which affects the manufacturing and use effect of the plastic-sealed motor.
  • the outer casing of the plastic motor is integrally injection molded with the stator assembly and the circuit board. There is no special stator containment cavity and circuit board containment cavity. It can not be assembled or disassembled in a separate manner. The outer casing, stator assembly and circuit board cannot be independently recycled.
  • the object of the present invention is to provide a motor casing, which is provided with a special bearing cavity, a stator containment cavity and a circuit board containment cavity, and can be assembled or disassembled separately from the outer casing and the stator assembly and the circuit board, and has good recyclability.
  • a motor housing includes a front end cover and a rear end cover, wherein the front end cover and the rear end cover are mounted together to form a plurality of cavities, wherein a top end of the front end cover is provided with a bearing cavity, and a stator containment cavity is disposed below the bearing cavity, and the stator containment cavity is A circuit board containing cavity is formed inside the rear end cover, and a shaft 7
  • the front end cover and the rear end cover described above are made of plastic, and the area of the circuit board containing cavity is larger than the area of the stator containing cavity.
  • the periphery of the stator containment chamber described above forms a cylindrical body, and the top end of the cylindrical body protrudes from the front end cover
  • the top surface of the shaft 7 also forms an inner cylinder.
  • the top of the inner cylinder protrudes from the top of the cylinder.
  • the periphery of the shaft 7 and the top of the cylinder protrude downward to protrude a number of circumferential positioning bosses. .
  • the top end surface of the front end cover protrudes downwardly from a plurality of connecting columns, the top of the connecting column has a mounting hole, and the end surface of the rear end cover has a screw hole corresponding to the connecting post, and the rear end cover and the connecting column can be screwed connect them.
  • the inner wall surface of the stator containment cavity is arranged beside the connecting column on the top end surface of the front end cover, and a positioning boss is arranged on the top surface of the rear end cover, and a plurality of columns are protruded beside the screw hole, and the column body and the positioning boss axis are axially
  • the stator assembly is fixed, and the inner wall surface of the stator containment chamber is also provided with a plurality of positioning ribs.
  • the edge of the front end cover protrudes from the edge of the outer cover, the edge of the rear end cover protrudes from the inner sleeve edge, the outer side of the outer sleeve edge is embedded in the groove on the inner side of the outer side of the front end cover.
  • the joint portion of the front end cover and the rear end cover is respectively provided with a buckle and a boss, the boss is embedded in the buckle, and the front end cover and the rear end cover are connected together to form a casing of the motor.
  • the front end cover and the rear end cover have a plurality of mounting through holes at the four end corners thereof.
  • the bottom end of the rear end cover is provided with an annular reinforcing rib, and the annular reinforcing rib is provided with a mounting hole at the periphery thereof, and the column is supported at a corresponding position of the mounting hole and the bottom surface of the rear end cover, and the supporting column top supporting line
  • the plate has a straight reinforcing rib inside the annular reinforcing rib.
  • a plurality of reinforcing ribs are arranged on the top surface of the rear end cover, between the shaft 7
  • the ribs have a notch on one side edge of the front end cover, and one side edge of the rear end cover is notched, and the two notches cooperate to form an outlet of the motor casing.
  • the invention has the following effects: 1) The front end cover and the rear end cover are assembled together to form an independent bearing cavity, a stator containment cavity and a circuit board containment cavity, the structure space is clear, the layout is reasonable, the structure is compact, the assembly is convenient, and the structure is stable. Reliable, low structural noise; 2) The joint between the front end cover and the rear end cover is provided with a buckle and a boss, and the outer casing of the motor is assembled by the snap fit and the boss nesting, and the assembly and disassembly are convenient and reliable, the front end cover and the rear end cover It is made of plastic, has low structural cost, good recyclability, and is more environmentally friendly.
  • the top end of the front cover protrudes from a plurality of connecting posts and the end faces of the rear end cover are screwed with screws to connect the front end cover and the rear end cover. More secure; 3) There are several mounting through holes at the four end corners of the front end cover and the rear end cover, and a mounting hole is also provided on the bottom end surface of the rear end cover to meet different customers.
  • the user selects the installation method of different load fixed mounting brackets according to the needs, the installation is convenient and reliable, the versatility is strong, and the manufacturing process is simple, and the manufacturing cost is low.
  • Figure 1 is a perspective view of an angle of the present invention.
  • Figure 2 is another perspective view of the present invention.
  • Figure 3 is a bottom plan view of the present invention.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3.
  • Figure 5 is an enlarged view of B-B of Figure 4.
  • Figure 6 is a structural view of the front end cover.
  • Figure 7 is a structural view of the rear end cover.
  • Figure 8 is a state diagram of the present invention assembled with various parts of the motor.
  • Figure 9 is a cross-sectional view of Figure 8.
  • a motor housing includes a front end cover 1 and a rear end cover 2, and the front end cover 1 and the rear end cover 2 are mounted together to form a plurality of cavities, wherein a bearing cavity 3 is disposed at the top of the front end cover 1 A stator containment cavity 4 is disposed below the shaft 7 cavity 3, and a circuit board containment cavity 5 is formed under the stator containment cavity 4 and inside the rear end cover 2, and a bearing is formed under the circuit board containment cavity 5 and at the bottom of the rear end cover 2 Cavity 6.
  • the front end cover 1 and the rear end cover 2 are made of plastic, and the area of the circuit board containing cavity 5 is larger than the area of the stator containing cavity 4.
  • the periphery of the stator containing cavity 4 forms a cylindrical body 7 and the top of the cylindrical body 7 is convex.
  • the top surface of the front end cover 1 is formed, and the outer periphery of the bearing chamber 3 also forms an inner cylinder 8, the top of which is protruded from the top of the cylindrical body 7, the periphery of the shaft 7 cavity 3, and the top of the cylindrical body 7 is downward.
  • a plurality of circumferential positioning bosses 9 are protruded, and a plurality of connecting posts 10 are protruded from the top end surface of the front end cover 1.
  • the top of the connecting post 10 is provided with a mounting hole 11 , and the end surface of the rear end cover 2 is open corresponding to the connecting post 10
  • the screw hole 12 can be connected to the connecting post 10 by screws.
  • the inner wall surface of the stator receiving cavity 4 is disposed on the top surface of the front end cover 1 with a positioning boss 13 .
  • the top surface of the rear end cover 2 and a plurality of cylinders 14 are protruded beside the screw hole 12, and the column 14 is Positioning boss 1 3 axially fixed stator assembly 33, stator package
  • the inner wall surface of the cavity 4 is further provided with a plurality of positioning ribs 15, the edge of the front end cover 1 protrudes from the outer side edge 16, the edge of the rear end cover 2 protrudes from the inner sleeve side 17, and the outer side edge 16 covers the inner sleeve side 17, and the inner side
  • the top of the sleeve 17 is embedded in the groove 18 on the inner side of the outer side of the front cover 1, and the groove 18 is filled with a sealant.
  • the joint of the front end cover 1 and the rear end cover 2 is respectively provided with a buckle 19 and a boss 20, which are convex.
  • the table 20 is embedded in the buckle 19, and the front end cover 1 and the rear end cover 2 are connected together to form a casing of the motor.
  • the front end cover 1 and the rear end cover 2 have a plurality of mounting through holes 21 at the four end corners thereof, and the rear end cover 2
  • the bottom surface is provided with an annular reinforcing rib 22, and the annular reinforcing rib 22 is provided with a mounting hole 23 at the periphery thereof. At a corresponding position of the mounting hole 23, the bottom surface of the rear end cover 2 is convexly supported by the column body 24, and the supporting column body 24 supports the top line.
  • the plate 34 has a straight reinforcing rib 25 on the inner side of the annular reinforcing rib 22, and a plurality of reinforcing ribs 26 are arranged on the top surface of the rear end cover 2, between the shaft 7 cavity 6 and the edge of the rear end cover 2, and the top surface of the front end cover 1 is provided.
  • a plurality of reinforcing ribs 27 are disposed between the cylindrical body 7 at the periphery of the upper stator receiving cavity 4 and the edge of the front end cover 1.
  • the front edge of the front end cover 1 is provided with a notch 28, and the rear end cover 2
  • One side edge is provided with a notch 29, and the notch 28 cooperates with the notch 29 to form a wire outlet 30 of the motor casing.
  • the rotating shaft 31 extends from the bearing cavity 6 of the rear end cover 2 and sequentially passes through the circuit board 34 inside the circuit board containing cavity 5,
  • the stator assembly 33 inside the stator containment chamber 4 is then taken out from the bearing chamber 3 of the front end cover 1.
  • the bearing chamber 3 is provided with a bearing 32.
  • the bearing chamber 6 is provided with a bearing 35.
  • the stator assembly 33 is mounted and connected to the circuit board 34. Together, the integral structure is formed, and the stator assembly 33 is axially supported by the column 14 and the positioning boss 13.
  • the column body 24 axially supports the bottom surface of the circuit board 34, and the whole structure is axially fixed and compact. Stable and reliable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)

Description

一种电机夕卜壳 技术领域 ：
本发明涉及一种电机外壳。
背景技术 ：
目前， 塑封电机的应用广泛， 其绝缘性和整体性相对较好， 质量稳定， 但仍然存在一定问题： 1 )多数塑封电机的轴承室一般采用金属材料， 在装 配时用螺栓、 铆釘或者嵌压固定于外壳上， 其定位精度不高， 对装配工艺 要求较高， 在运转时噪声较大， 影响了塑封电机的制造和使用效果。 2 )塑 封电机的外壳与定子组件、 线路板一体注塑成型， 没有设置专门的定子包 容腔和线路板包容腔， 不能进行分体式装配或拆卸， 不能对外壳、 定子组 件、 线路板进行独立的回收利用， 造成资源的极大浪费， 不环保； 3 )对生 产工艺要求高， 制造成本高； 4 ) 它的安装方式比较单一， 安装距离和安装 位置很难调整， 不能满足不同客户的负载固定安装架的安装方式， 通用性 较差。
发明内容 ：
本发明的目的是提供一种电机外壳， 它设置有专门的轴承腔、 定子包 容腔和线路板包容腔， 可以对外壳与定子组件、 线路板进行分体式装配或 拆卸， 具备回收性好， 比较环保， 布局合理， 结构紧凑， 安装方便可靠和 通用性强等优点。
本发明的目的是通过下述技术方案予以实现的。
一种电机外壳， 包括前端盖和后端盖， 前端盖和后端盖安装在一起形 成多个容腔，其中前端盖顶部设置轴承腔，在轴承腔下方设置定子包容腔， 在定子包容腔的下方、 后端盖内部形成线路板包容腔， 在线路板包容腔的 下方、 后端盖的底部形成轴 7|腔。
上述所述的前端盖和后端盖是塑料制成的， 线路板包容腔的面积比定 子包容腔的面积大。
上述所述的定子包容腔的外围形成圓筒体， 圓筒体的顶部凸出前端盖 的顶面， 轴 7 腔的外围也形成内圓筒， 内圓筒的顶部凸出圓筒体的顶部， 轴 7 腔的外围、 圓筒体的顶部往下凸出若干个周向定位凸台。
上述所述的前端盖顶端面往下伸出若干个连接柱， 连接柱顶部开有安 装孔， 后端盖端面上开有与连接柱相对应的螺孔， 可用螺釘将后端盖与连 接柱连接起来。
上述所述的前端盖顶端面上连接柱旁边、 定子包容腔的内壁面设置有 定位凸台， 后端盖顶面上、 螺孔旁边凸起若干根柱体， 柱体与定位凸台轴 向固定定子组件， 定子包容腔的内壁面还设置有若干条定位筋。
上述所述的前端盖边缘凸出外套边， 后端盖的边缘凸出内套边， 外套 边套住内套边， 并且内套边顶部嵌入到前端盖的外套边内侧的 槽里面。
上述所述的前端盖与后端盖的结合部分别设置卡扣和凸台， 凸台嵌入 卡扣里面， 前端盖与后端盖连接在一起形成电机的外壳。
上述所述的前端盖与后端盖的四个端角开有若干个安装通孔。
上述所述的后端盖底面上设置有环状加强筋， 环状加强筋外围开有安 装孔， 在安装孔的对应位置、 后端盖内部底面凸起支承柱体， 支承柱体顶 部支撑线路板， 环状加强筋内侧设有直条加强筋。
上述所述的后端盖顶面上、 轴 7|腔与后端盖边缘之间设置有若干条加 强筋， 前端盖顶面上定子包容腔外围的圓筒体与前端盖边缘之间设置若干 条加强筋， 前端盖的一侧边缘开有缺口， 后端盖的一侧边缘开有缺口， 这 两个缺口配合构成电机外壳的出线口。
本发明具有如下效果： 1 )前端盖和后端盖安装在一起可形成独立的轴 承腔、 定子包容腔和线路板包容腔， 结构空间层次分明， 布局合理， 结构 紧凑， 便于装配， 且结构稳定可靠， 结构噪音较低； 2 )前端盖与后端盖的 结合部设置卡扣和凸台， 通过卡扣和凸台嵌套配合组成电机的外壳， 装配 拆卸方便可靠， 前端盖与后端盖是塑料制造的， 结构成本低， 可回收性好， 比较环保， 前端盖顶端面伸出若干个连接柱与后端盖端面上开有螺孔用螺 釘连接起来， 使前端盖和后端盖连接更加牢固； 3 )前端盖与后端盖的四个 端角开有若干个安装通孔， 后端盖底端面上还开有安装孔， 可满足不同客 户根据需要选择不同负载固定安装架的安装方式， 安装方便可靠， 通用性 强，并且制造工艺筒单， 制造成本低。
附图说明：
图 1 是本发明的一个角度的立体图。
图 2 是本发明的另一角度立体图。
图 3 是本发明的底面图。
图 4 是图 3的 A-A剖视图。
图 5 是图 4的 B-B放大图。
图 6 是前端盖的结构图。
图 7 是后端盖的结构图。
图 8 是本发明与电机各零件装配后的状态图。
图 9 是图 8的剖视图。
具体实施方式：
下面通过具体实施例并结合附图对本发明作进一步详细的描述。
如图 1至图 9所示， 一种电机外壳， 包括前端盖 1和后端盖 2 , 前端盖 1和后端盖 2安装在一起形成多个容腔，其中前端盖 1顶部设置轴承腔 3，在 轴 7 腔 3下方设置定子包容腔 4，在定子包容腔 4的下方、 后端盖 2内部形 成线路板包容腔 5 , 在线路板包容腔 5的下方、后端盖 2的底部形成轴承腔 6。
其中前端盖 1和后端盖 2是塑料制成的， 线路板包容腔 5的面积比定 子包容腔 4的面积大， 定子包容腔 4的外围形成圓筒体 7 , 圓筒体 7的顶部 凸出前端盖 1的顶面， 轴承腔 3的外围也形成内圓筒 8 , 内圓筒 8的顶部凸 出圓筒体 7的顶部， 轴 7 腔 3的外围、 圓筒体 7的顶部往下凸出若干个周 向定位凸台 9 , 前端盖 1顶端面往下伸出若干个连接柱 10 , 连接柱 10顶部 开有安装孔 11 , 后端盖 2端面上开有与连接柱 10相对应的螺孔 12 , 可用 螺釘将后端盖 2与连接柱 1 0连接起来。 前端盖 1顶端面上连接柱 10旁边、 定子包容腔 4的内壁面设置有定位凸台 1 3 ,后端盖 2顶面上、 螺孔 12旁边 凸起若干根柱体 14 , 柱体 14与定位凸台 1 3轴向固定定子组件 33 , 定子包 容腔 4的内壁面还设置有若干条定位筋 15, 前端盖 1边缘凸出外套边 16, 后端盖 2的边缘凸出内套边 17, 外套边 16套住内套边 17, 并且内套边 17 顶部嵌入到前端盖 1的外套边 16内侧的凹槽 18里面， 凹槽 18内填充密封 胶， 前端盖 1与后端盖 2的结合部分别设置卡扣 19和凸台 20, 凸台 20嵌 入卡扣 19里面， 前端盖 1与后端盖 2连接在一起形成电机的外壳， 前端盖 1与后端盖 2的四个端角开有若干个安装通孔 21, 后端盖 2底面上设置有 环状加强筋 22, 环状加强筋 22外围开有安装孔 23, 在安装孔 23的对应位 置、 后端盖 2内部底面凸起支承柱体 24, 支承柱体 24顶部支撑线路板 34, 环状加强筋 22内侧设有直条加强筋 25,后端盖 2顶面上、轴 7 腔 6与后端 盖 2边缘之间设置有若干条加强筋 26, 前端盖 1顶面上定子包容腔 4外围 的圓筒体 7与前端盖 1边缘之间设置若干条加强筋 27, 前端盖 1的一侧边 缘开有缺口 28, 后端盖 2的一侧边缘开有缺口 29, 缺口 28与缺口 29配合 构成电机外壳的出线口 30,转轴 31从后端盖 2的轴承腔 6伸出依次穿过线 路板包容腔 5里面的线路板 34、 定子包容腔 4里面的定子组件 33, 然后从 前端盖 1的轴承腔 3中引出， 轴承腔 3中设有轴承 32, 轴承腔 6中设有轴 承 35, 定子组件 33与线路板 34安装连接在一起， 形成整体结构， 通过柱 体 14与定位凸台 13轴向支撑固定定子组件 33,支 7|柱体 24顶部轴向支撑 线路板 34的底面， 对整体结构实现轴向固定， 结构紧凑， 稳定可靠。

Claims

权 利 要 求
1、 一种电机外壳， 包括前端盖 （1 )和后端盖 （2), 其特征在于： 前 端盖（ 1 )和后端盖（ 2 )安装在一起形成多个容腔，其中前端盖 （ 1 )顶部 设置轴承腔（ 3 )，在轴承腔 ( 3 )下方设置定子包容腔（ 4 )，在定子包容腔
(4) 的下方、 后端盖 （2) 内部形成线路板包容腔（5 ), 在线路板包容腔
(5 ) 的下方、 后端盖 （2) 的底部形成轴承腔（6)。
2、 根据权利要求 1所述的一种电机外壳， 其特征在于： 前端盖 （1 ) 和后端盖（ 2 )是塑料制成的， 线路板包容腔 ( 5 )的面积比定子包容腔（ 4 ) 的面积大。
3、 根据权利要求 1或 2所述的一种电机外壳， 其特征在于： 定子包容 腔（4 ) 的外围形成圓筒体（7), 圓筒体（7) 的顶部凸出前端盖（1 ) 的顶 面， 轴承腔（3) 的外围也形成内圓筒 （8 ), 内圓筒 （8 ) 的顶部凸出圓筒 体（7 ) 的顶部， 轴 7 腔（3) 的外围、 圓筒体（7) 的顶部往下凸出若干个 周向定位凸台 （9)。
4、 根据权利要求 1或 2所述的一种电机外壳，其特征在于：前端盖（ 1 ) 顶端面往下伸出若干个连接柱 ( 10), 连接柱 ( 10)顶部开有安装孔（11 ), 后端盖（ 2 )端面上开有与连接柱（ 10 )相对应的螺孔（ U ), 可用螺釘将 后端盖（ 2 )与连接柱 ( 10 )连接起来。
5、 根据权利要求 1所述的一种电机外壳， 其特征在于： 前端盖 （1 ) 顶端面上连接柱（ 10 )旁边、定子包容腔（ 4 )的内壁面设置有定位凸台（ 13 ), 后端盖（ 2 )顶面上、 螺孔（ 12 ) 旁边凸起若干根柱体（ 14 ), 柱体（ 14 ) 与定位凸台 （13)轴向固定定子组件（33), 定子包容腔（4 ) 的内壁面还 设置有若干条定位筋 （15)。
6、 根据权利要求 1所述的一种电机外壳， 其特征在于： 前端盖 （1 ) 边缘凸出外套边（16), 后端盖（2)的边缘凸出内套边（17), 外套边（16 ) 套住内套边（ 17 ), 并且内套边（ 17 )顶部嵌入到前端盖（ 1 )的外套边（ 16 ) 内侧的凹槽（ is )里面。
7、 根据权利要求 1或 6所述的一种电机外壳，其特征在于：前端盖（ 1 ) 与后端盖 （2) 的结合部分别设置卡扣 （19 )和凸台 （20), 凸台 （20)嵌 入卡扣 （ I9 )里面， 前端盖（ 1 ) 与后端盖（ 2 )连接在一起形成电机的外 壳。
8、 根据权利要求 1所述的一种电机外壳， 其特征在于： 前端盖 （1 ) 与后端盖 （2) 的四个端角开有若干个安装通孔（21)。
9、 根据权利要求 1所述的一种电机外壳， 其特征在于： 后端盖 （2) 底面上设置有环状加强筋 （22), 环状加强筋 （22)外围开有安装孔（23), 在安装孔 3) 的对应位置、 后端盖（2) 内部底面凸起支承柱体（24), 支 7 柱体（ 24 )顶部支撑线路板 ( 34 )， 环状加强筋 （ 11 ) 内侧设有直条加 强筋 （25)。
10、 根据权利要求 1所述的一种电机外壳， 其特征在于： 后端盖（2 ) 顶面上、 轴承腔 (6) 与后端盖（2)边缘之间设置有若干条加强筋 （26), 前端盖（1 )顶面上定子包容腔 (4)外围的圓筒体（7) 与前端盖（1 )边 缘之间设置若干条加强筋 （27), 前端盖（1 ) 的一侧边缘开有缺口 （28 ), 后端盖（2) 的一侧边缘开有缺口 （29), 缺口 （28 )与缺口 （29) 配合构 成电机外壳的出线口 （30)。
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