Plastic-sealed motor

Abstract

The utility model discloses a kind of plastic package motors, including motor body and motor controller, motor body includes rotor assembly, plastic package stator and end cover, plastic package stator is sleeved outside rotor assembly, end cover is installed in the lower end of plastic package stator, motor controller is installed in the upper end of plastic package stator, plastic package stator includes stator core, bearing seat and the plastic package body that plastic package stator core and bearing seat are plastic packaged together, bearing is installed in bearing seat, the upper end surface of plastic package body is axially protruded with annular protrusion for installing motor controller, it is characterized by: the top surface of the annular protrusion forms sealing ring mounting surface, the inner side of sealing ring mounting surface is axially protruded with several sealing ring bosses, sealing ring is installed on sealing ring mounting surface, the shell of motor controller is pressed on sealing ring, sealing ring boss is against the inner side surface of sealing ring.The inner side surface of sealing ring is fixed by sealing ring boss, sealing ring is not easy to displace, installation is convenient, and motor sealing effect is good.

Description

Technical Field

[0001] This utility model relates to a plastic-encapsulated motor. Background Technology

[0002] Existing encapsulated motors include a motor body and a motor controller. The motor body comprises a rotor assembly, an encapsulated stator, and end covers. The encapsulated stator is fitted over the rotor assembly, and the end covers are installed at the lower end of the encapsulated stator. The motor controller is installed at the upper end of the encapsulated stator. The encapsulated stator includes a stator core, a bearing housing, and an encapsulated body that encapsulates the stator core and bearing housing together. Bearings are installed inside the bearing housing. The upper end face of the encapsulated body has an axially protruding annular protrusion for mounting the motor controller, and the annular protrusion is sealed to the motor controller housing by a sealing ring. However, the installation of the sealing ring is cumbersome, and displacement often occurs during the installation of the motor control box, affecting the internal sealing effect of the motor, which directly affects the service life of the motor. Utility Model Content

[0003] This utility model provides a plastic-encapsulated motor to solve the problem that the sealing ring of the plastic-encapsulated motor is difficult to install, which affects the sealing effect of the motor.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The purpose of this utility model is to provide a plastic-encapsulated motor, including a motor body and a motor controller. The motor body includes a rotor assembly, a plastic-encapsulated stator, and an end cover. The plastic-encapsulated stator is fitted outside the rotor assembly, and the end cover is installed at the lower end of the plastic-encapsulated stator. The motor controller is installed at the upper end of the plastic-encapsulated stator. The plastic-encapsulated stator includes a stator core, a bearing housing, and a plastic encapsulation body that encapsulates the stator core and the bearing housing together. A bearing is installed inside the bearing housing. An annular protrusion for installing the motor controller is axially protruding from the upper end surface of the plastic encapsulation body. The key feature is that the top surface of the annular protrusion forms a sealing ring mounting surface, and several sealing ring bosses are axially protruding from the inner side of the sealing ring mounting surface. A sealing ring is installed on the sealing ring mounting surface, and the outer shell of the motor controller presses on the sealing ring. The sealing ring bosses abut against the inner side of the sealing ring.

[0006] The end face of the aforementioned sealing ring has several axially protruding positioning sleeves, which are fitted onto the sealing ring boss.

[0007] The aforementioned motor controller has a height limiting step protruding axially along the outer edge of its housing. The height limiting step is engaged with the sealing ring and abuts against the sealing ring mounting surface.

[0008] The bottom of the aforementioned motor controller housing is provided with several mounting platforms, each with mounting holes. A clearance groove is provided above the mounting platform, and the sealing ring has clearance holes corresponding to the mounting holes. The annular protrusion has screw holes corresponding to the mounting holes. The mounting screws are installed inside the mounting platforms, with the tail of the mounting screw passing through the mounting holes and clearance holes and then fixed inside the screw holes. The motor controller is mounted on the plastic-encapsulated stator by the mounting screws.

[0009] The aforementioned sealing ring extends outward from the periphery of the clearance hole to form a fixing plate. The fixing plate is correspondingly set with the mounting platform, and the mounting platform presses on the fixing plate.

[0010] The upper surface of the aforementioned encapsulation body has a sloping boss protruding from it. The top surface of the sloping boss extends obliquely from the upper surface towards the sealing ring mounting surface. One end of the conductive rubber strip is electrically connected to the end cap. The middle part of the conductive rubber strip reaches the bearing seat along the outer surface of the encapsulation body and the top surface of the sloping boss and is electrically connected to the bearing seat. After reaching the bearing seat, the conductive rubber strip folds back and extends to the edge. The other end of the conductive rubber strip contacts the housing of the motor controller to form an electrical connection. The sealing ring presses on the conductive rubber strip and exposes the other end of the conductive rubber strip.

[0011] The aforementioned sealing ring mounting surface has a clearance groove at the extension of the inclined boss, and the conductive adhesive strip is attached to the clearance groove.

[0012] The upper surface of the aforementioned encapsulated body has four exposed terminals, which are electrically connected to the control circuit board of the motor controller.

[0013] The outer surface of the aforementioned encapsulated body has several mounting feet that protrude radially, and the mounting feet are provided with mounting grooves or mounting holes.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. The encapsulated motor includes a motor body and a motor controller. The motor body includes a rotor assembly, an encapsulated stator, and end caps. The encapsulated stator is fitted over the rotor assembly. The end caps are installed at the lower end of the encapsulated stator. The motor controller is installed at the upper end of the encapsulated stator. The encapsulated stator includes a stator core, a bearing housing, and an encapsulated body that encapsulates the stator core and the bearing housing together. A bearing is installed inside the bearing housing. An annular protrusion for mounting the motor controller is axially protruding from the upper surface of the encapsulated body. The key feature is that the top surface of the annular protrusion forms a sealing ring mounting surface. Several sealing ring bosses axially protrude from the inner side of the sealing ring mounting surface. A sealing ring is installed on the sealing ring mounting surface. The outer shell of the motor controller presses against the sealing ring, and the sealing ring bosses abut against the inner side of the sealing ring. The inner side of the sealing ring is fixed by the sealing ring bosses, making the sealing ring less prone to displacement, easy to install, and providing good motor sealing performance.

[0016] 2. Other advantages of this utility model are described in detail in the embodiments section. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the encapsulated motor provided in an embodiment of the present utility model;

[0018] Figure 2 This is a top view of a plastic-encapsulated motor.

[0019] Figure 3 for Figure 2 AA section view;

[0020] Figure 4 for Figure 3 Enlarged view of point B;

[0021] Figure 5 for Figure 3 Enlarged view of point C;

[0022] Figure 6 This is an exploded view of a plastic-encapsulated motor.

[0023] Figure 7 This is a schematic diagram of the structure of the plastic-encapsulated stator in a plastic-encapsulated motor;

[0024] Figure 8 This is a schematic diagram of the sealing ring in a plastic-encapsulated motor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1 to 8As shown, this embodiment provides a plastic-encapsulated motor, including a motor body and a motor controller 1. The motor body includes a rotor assembly, a plastic-encapsulated stator 2, and an end cover 3. The plastic-encapsulated stator 2 is fitted outside the rotor assembly, and the end cover 3 is installed at the lower end of the plastic-encapsulated stator 2. The motor controller 1 is installed at the upper end of the plastic-encapsulated stator 2. The plastic-encapsulated stator 2 includes a stator core 24, a bearing housing 22, and a plastic-encapsulated body 21 that encapsulates the stator core 24 and the bearing housing 22 together. A bearing 221 is installed inside the bearing housing 22. An annular protrusion 212 for installing the motor controller 1 protrudes axially from the upper end surface 211 of the plastic-encapsulated body 21. The annular protrusion 212 forms a sealing ring mounting surface 213 on its top surface. Several sealing ring bosses 214 protrude axially from the inner side of the sealing ring mounting surface 213. A sealing ring 5 is installed on the sealing ring mounting surface 213. The outer shell 11 of the motor controller 1 presses against the sealing ring 5, and the sealing ring bosses 214 abut against the inner side of the sealing ring 5.

[0027] The inner side of the sealing ring 5 of the encapsulated motor is fixed by the sealing ring boss 214, making the sealing ring 5 less prone to displacement, easy to install, and providing good motor sealing effect.

[0028] The sealing ring 5 described above has several locating sleeves 51 protruding axially from its end face. The locating sleeves 51 are fitted onto the sealing ring boss 214. The locating sleeves 51 and the sealing ring boss 214 are interference-fitted, and the fit between the locating sleeves 51 and the sealing ring boss 214 further enhances the sealing effect.

[0029] The outer edge of the housing 11 of the motor controller 1 described above has a height limiting step 17 protruding axially. The height limiting step 17 is engaged with the sealing ring 5 and abuts against the sealing ring mounting surface 213. The height limiting step 17 is used to control the compression of the sealing ring 5.

[0030] The bottom of the housing 11 of the motor controller 1 described above is provided with several mounting platforms 12. Each mounting platform 12 has mounting holes 13, and a clearance groove 14 is provided above it. The sealing ring 5 has clearance holes 52 corresponding to the mounting holes 13. The annular protrusion 212 has screw holes 215 corresponding to the mounting holes 13. Mounting screws 15 are installed inside the mounting platforms 12, with the tail of the screw passing through the mounting holes 13 and clearance holes 52 and then fixed in the screw hole 215. The motor controller 1 is mounted on the encapsulated stator 2 using the mounting screws 15. Fixing the motor body and the motor controller 1 with the mounting screws 15 effectively improves the motor's protection level and installation efficiency. The clearance holes 52 in the sealing ring 5 effectively prevent water from entering the motor when the mounting screws 15 are tightened.

[0031] The aforementioned sealing ring 5 extends outward from the periphery of the clearance hole 52 to form a fixing piece 53. The fixing piece 53 is correspondingly arranged with the mounting platform 12 and the mounting platform 12 presses on the fixing piece 53.

[0032] The upper end face 211 of the aforementioned encapsulation body 21 has a protruding inclined boss 216. The top surface of the inclined boss 216 extends obliquely from the upper end face 211 toward the sealing ring mounting surface 213. One end of the conductive adhesive strip 4 is electrically connected to the end cap 3. The middle part of the conductive adhesive strip 4 reaches the bearing seat 22 along the outer side of the encapsulation body 21 and the top surface of the inclined boss 216 and is electrically connected to the bearing seat 22. After reaching the bearing seat 22, the conductive adhesive strip 4 turns back and extends to the edge. The other end of the conductive adhesive strip 4 contacts the housing 11 of the motor controller 1 to form an electrical connection. The sealing ring 5 presses on the conductive adhesive strip 4 and exposes the other end of the conductive adhesive strip 4.

[0033] The aforementioned sealing ring mounting surface 213 has a clearance groove 218 at the extension of the inclined boss 216, and the conductive adhesive strip 4 is attached to the clearance groove 218. The clearance groove 218 can prevent the conductive adhesive strip 4 from being crushed by the height limiting step 17 of the control box.

[0034] The upper end face 211 of the aforementioned encapsulated body 21 exposes four terminals 23, which are electrically connected to the control circuit board 16 of the motor controller 1. Electrical connection wires are soldered to the terminals 23 for easy connection to the controller.

[0035] The outer surface of the aforementioned encapsulated body 21 has a plurality of mounting feet 217 protruding radially, and the mounting feet 217 are provided with mounting grooves or mounting holes.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plastic-encapsulated motor, comprising a motor body and a motor controller (1), the motor body comprising a rotor assembly, a plastic-encapsulated stator (2) and an end cap (3), the plastic-encapsulated stator (2) being fitted over the rotor assembly, the end cap (3) being installed at the lower end of the plastic-encapsulated stator (2), and the motor controller (1) being installed at the upper end of the plastic-encapsulated stator (2), the plastic-encapsulated stator (2) comprising a stator core (24), a bearing housing (22), and a plastic-encapsulated body (21) for encapsulating the stator core (24) and the bearing housing (22) together, the bearing housing (22) having a bearing (221) installed inside, and the upper end face (211) of the plastic-encapsulated body (21) having an annular protrusion (212) for mounting the motor controller (1) protruding axially, characterized in that: The top surface of the annular protrusion (212) forms a sealing ring mounting surface (213). Several sealing ring bosses (214) protrude axially from the inner side of the sealing ring mounting surface (213). A sealing ring (5) is installed on the sealing ring mounting surface (213). The outer shell (11) of the motor controller (1) presses on the sealing ring (5), and the sealing ring bosses (214) abut against the inner side of the sealing ring (5).

2. The encapsulated motor according to claim 1, characterized in that: The end face of the sealing ring (5) has a number of positioning sleeves (51) that are axially protruding and corresponding to the sealing ring boss (214). The positioning sleeves (51) are fitted onto the sealing ring boss (214).

3. A plastic-encapsulated motor according to claim 2, characterized in that: The outer edge of the housing (11) of the motor controller (1) has a height limiting step (17) protruding axially. The height limiting step (17) is locked outside the sealing ring (5) and abuts against the sealing ring mounting surface (213).

4. A plastic-encapsulated motor according to claim 3, characterized in that: The bottom of the housing (11) of the motor controller (1) is provided with several mounting platforms (12), the mounting platform (12) is provided with mounting holes (13), the mounting platform (12) is provided with a clearance groove (14) above the mounting platform (12), the sealing ring (5) is provided with clearance holes (52) corresponding to the mounting holes (13), the annular protrusion (212) is provided with screw holes (215) corresponding to the mounting holes (13), the mounting screws (15) are installed in the mounting platform (12), the tail of the mounting screws (15) passes through the mounting holes (13) and clearance holes (52) and is fixed in the screw holes (215), and the motor controller (1) is installed on the plastic-sealed stator (2) by the mounting screws (15).

5. A plastic-encapsulated motor according to claim 4, characterized in that: The sealing ring (5) extends outward from the periphery of the clearance hole (52) to form a fixing piece (53). The fixing piece (53) is correspondingly set with the mounting platform (12) and the mounting platform (12) presses on the fixing piece (53).

6. A plastic-encapsulated motor according to any one of claims 1 to 5, characterized in that: The upper end face (211) of the encapsulation body (21) has a protruding inclined boss (216). The top surface of the inclined boss (216) extends obliquely from the upper end face (211) toward the sealing ring mounting surface (213). One end of the conductive rubber strip (4) is electrically connected to the end cap (3). The middle part of the conductive rubber strip (4) reaches the bearing seat (22) along the outer side of the encapsulation body (21) and the top surface of the inclined boss (216) and is electrically connected to the bearing seat (22). After reaching the bearing seat (22), the conductive rubber strip (4) turns back and extends to the edge. The other end of the conductive rubber strip (4) contacts the outer shell (11) of the motor controller (1) to form an electrical connection. The sealing ring (5) presses on the conductive rubber strip (4) and exposes the other end of the conductive rubber strip (4).

7. A plastic-encapsulated motor according to claim 6, characterized in that: The sealing ring mounting surface (213) has a clearance groove (218) at the extension of the inclined boss (216), and the conductive adhesive strip (4) is attached to the clearance groove (218).

8. A plastic-encapsulated motor according to claim 7, characterized in that: Four terminals (23) are exposed on the upper end face (211) of the encapsulated body (21), and the terminals (23) are electrically connected to the control circuit board (16) of the motor controller (1).

9. A plastic-encapsulated motor according to claim 8, characterized in that: The outer surface of the encapsulated body (21) has a plurality of mounting feet (217) protruding radially, and the mounting feet (217) are provided with mounting grooves or mounting holes.

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