CN209963868U

CN209963868U - Waterproof brushless motor

Info

Publication number: CN209963868U
Application number: CN201920441536.5U
Authority: CN
Inventors: 于志彬; 陈刚; 易恭才; 闫鲲
Original assignee: Shenzhen Power Motor Industrial Co Ltd
Current assignee: Shenzhen Power Motor Industrial Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-01-17
Anticipated expiration: 2029-04-02

Abstract

The utility model discloses a waterproof brushless motor, it includes: a motor main body including a motor housing, a motor rotating shaft, and a stator winding, the motor housing having an opening portion that allows the motor rotating shaft to protrude therefrom; a control having a socket portion and a control interface portion, the control being electrically connected to an external device via the socket portion; a connector connecting the motor main body and the control member and having a connector interface; the motor rotating shaft is connected with the opening portion in a sealing mode, the connecting piece is connected with the joint of the motor shell in a sealing mode, the connecting piece is connected with the joint of the control piece in a sealing mode, the control piece connecting portion and the connecting piece connecting portion are configured to be connected with a lead wire of the stator winding extending out of the connecting piece connecting portion in a sealing mode, and the socket portion is provided with a waterproof piece. The utility model discloses an as above arrange and to prevent that outside liquid from getting into waterproof brushless motor.

Description

Waterproof brushless motor

Technical Field

The utility model relates to a waterproof brushless motor particularly, relates to a waterproof brushless motor.

Background

With the continuous progress of motor manufacturing technology, brushless motors (permanent magnet brushless direct current motors) are widely applied to various production and living fields due to the advantages of good performance, high efficiency, high reliability and the like. However, when the brushless motor is used in a wading place such as an automobile, a water pump, or the like, the brushless motor should have good waterproof performance in order to ensure long-term operation of the brushless motor and the equipment in which the brushless motor is installed. Therefore, in order to obtain good waterproof performance, those skilled in the art strive to improve the waterproof structure of the brushless motor so as to enable the brushless motor to meet the protection requirement of IP68 level, and further meet the use requirement of the brushless motor in the water-involved occasions.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an embodiment provides a waterproof brushless motor, and it has satisfied brushless motor in the operation requirement of wading of water occasion.

The utility model discloses a waterproof brushless motor includes: a motor body including a motor housing, a motor shaft, and a stator winding provided in the motor housing, the motor housing having an opening portion that allows the motor shaft to protrude therefrom; a control having a socket portion and a control interface portion, the control being electrically connected to an external device via the socket portion; a connector connecting the motor body and the control member and having a connector interface portion configured to communicate with the control member interface portion when the motor body, the connector, and the control member are assembled; the motor rotating shaft is connected with the opening portion in a sealing mode, the connecting piece is connected with the joint of the motor shell in a sealing mode, the connecting piece is connected with the joint of the control piece in a sealing mode, the control piece connecting portion and the connecting piece connecting portion are configured to be connected with a lead wire of the stator winding extending out of the connecting piece connecting portion in a sealing mode, and the socket portion is provided with a waterproof piece to prevent external liquid from entering the waterproof brushless motor.

In some embodiments of the present invention, the motor shaft is connected to the opening portion through a first seal ring in a sealing manner.

In some embodiments of the present invention, the joint of the connecting member and the motor housing is hermetically connected by a second sealing ring.

In some embodiments of the invention, the motor housing, the control element and the connecting element are fixedly connected by a locking element.

In some embodiments of the present invention, the joint of the connecting member and the control member is hermetically connected by a sealant; in a specific embodiment, a groove suitable for filling the sealant is arranged on the surface of the connecting piece; in a more specific embodiment, the number of grooves is at least 1.

In some embodiments of the present invention, the control member interface portion and the connection member interface portion are sealingly connected with the lead wires of the stator winding extending therethrough by a sealant.

In some embodiments of the invention, the waterproof member is a waterproof lock adapted to engage with the socket portion.

In some embodiments of the present invention, the stator winding is adapted to be fluid-tight with other portions of the interior of the motor housing by being coated with a sealing adhesive.

The utility model has the advantages of:

the utility model discloses a waterproof brushless motor can prevent that outside liquid from getting into brushless motor through following configuration: the motor rotating shaft is connected with the opening portion in a sealing mode, the connecting piece is connected with the joint of the motor shell in a sealing mode, the connecting piece is connected with the joint of the control piece in a sealing mode, the control piece connecting portion and the connecting piece connecting portion are configured to be connected with a lead wire of the stator winding extending out of the connecting piece connecting portion in a sealing mode, and the socket portion is provided with a waterproof piece. And, the waterproof brushless motor can obtain the IP68 waterproof grade.

Drawings

For understanding the present invention, the present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Fig. 1 is an exploded view of a waterproof brushless motor according to an exemplary embodiment of the present invention.

Fig. 2 is an assembly view of the waterproof brushless motor shown in fig. 1.

Fig. 3 is a plan view of the waterproof brushless motor shown in fig. 1.

Fig. 4 is a bottom view of the waterproof brushless motor shown in fig. 1.

Fig. 5 is a perspective view of a connector of the waterproof brushless motor shown in fig. 1.

Detailed Description

Although the waterproof brushless motor of the present invention can be implemented in many different ways, the exemplary embodiments will be described in detail herein with reference to the accompanying drawings, it being understood that the description herein should be considered as illustrating the principles of the structure of the waterproof brushless motor, and is not intended to limit the main aspects herein to the exemplary embodiments.

Fig. 1 and 2 are an exploded view and an assembly view, respectively, of a waterproof brushless motor 10 according to an exemplary embodiment of the present invention. As shown in fig. 1 and 2, the waterproof brushless motor 10 includes a motor main body 101, a control member 102, and a connecting member 103 connecting the motor main body 101 and the control member 102.

Specifically, as shown in fig. 1, 2, and 4, the motor main body 101 includes a motor housing 1011, a motor shaft 1012, and a stator winding 1013 provided inside the motor housing 1011, and the motor housing 1011 has an opening 1014 allowing the motor shaft 1012 to protrude therefrom.

As shown in fig. 1 and 3, the control 102 has a socket portion 1021 and a control interface portion 1022, and the control 102 is electrically connected to an external device via the socket portion 1021.

As shown in fig. 1 and 5, the connector 103 has a connector interface part 1031 configured to communicate with the control member interface part 1022 when the motor body 101, the connector 103, and the control member 102 are assembled (as shown in fig. 2). In the exemplary embodiment, the connecting member 103 is approximately annular, and the connecting member 103 may have any other suitable shape as long as it is adapted to cooperate with the motor housing and the control member.

The utility model discloses a waterproof brushless motor 10 has carried out waterproof construction's setting to possible waterproof inefficacy position. The possible waterproof failure site and the waterproof structure employed at the possible waterproof failure site will be described in detail below:

the first place of possible water-proof failure is the joint of the motor shaft 1012 and the opening 1014 of the motor housing 1011. In order to improve the waterproof effect, the motor rotating shaft 1012 is hermetically connected with the opening 1014 of the motor shell 1011; specifically, a first sealing ring 1015 is disposed between the motor shaft 1012 and the opening 1014 to achieve a waterproof sealing effect by friction and pressing between the first sealing ring 1015 and an inner wall of the opening 1014. Preferably, the first sealing ring 1015 is located outside the motor shaft 1012 and is integrated with the motor shaft 1012. Alternatively, the first sealing ring 1015 may be formed integrally with the inner wall of the opening 1014, or may be a separate member from both the motor shaft 1012 and the inner wall of the opening 1014.

A second possible failure to protect against water is the joint between the connector 103 and the motor housing 1011. In order to improve the waterproof effect, the joint of the connecting piece 103 and the motor shell 1011 is hermetically connected; specifically, a second seal ring 104 is provided at the joint between the connection member 103 and the motor housing 1011 to fill the gap between the connection member 103 and the motor housing 1011 by means of the second seal ring 104, thereby performing a waterproof sealing function. In this case, the motor housing 1011, the control member 102, and the connecting member 103 are fixedly connected by a locking member 105, and specifically, the locking member 105 fixedly connects the control member 102, the connecting member 103, and the motor housing 1011 through

holes

1023, 1032, 1016 provided in this order at the outside protruding portion of the control member 102, the through hole of the outside protruding portion of the connecting member 103, and the through hole of the outside protruding portion of the motor housing 1011, thereby pressing the second seal ring 104 to reduce the gap between the connecting member 103 and the motor housing 1011, thereby further improving the sealing and waterproofing effect at the joint of the connecting member 103 and the motor housing 1011. Preferably, retaining member 105 is a retaining screw and

apertures

1023, 1032, 1016 are all threaded. The number of retaining members 105 is 4 and the number of through

holes

1023, 1032, 1016 are each 4. Adjacent retaining members 105 are angularly equally spaced. Alternatively, the number of locking members is not limited thereto, and may be any suitable number as long as the number of locking members is ensured to be the same as the number of through holes on the respective outer side projections of the control member 102, the connecting member 103, and the motor housing 1011.

The third place of possible water-proof failure is the joint of the connecting member 103 and the control member 102. In order to improve the waterproof effect, the joint between the connecting member 103 and the control member 102 is hermetically connected by a sealant (not shown). Specifically, the surface of the connecting member 103 has at least one groove 1033 (shown in fig. 1 and 5) adapted to be filled with a sealant, and when the control member 102, the connecting member 103 and the motor housing 1011 are fixedly connected by the locking member 105, the sealant in the groove 1033 of the surface of the connecting member 103 is pressed to reduce a gap between the connecting member 103 and the control member 102, thereby further improving the waterproof sealing effect at the joint of the connecting member 103 and the control member 102. Preferably, the number of the grooves 1033 is 2. Alternatively, the number of the grooves 1033 may be 1 or 3. Alternatively, a sealing ring may be used instead of the sealing glue in the groove.

A fourth possible waterproof failure portion is a gap between the control interface portion 1022 and the connection interface portion 1031 and lead wires (not shown) of the stator windings 1013 protruding through these two interface portions. To improve the waterproof effect here, the control member interface part 1022 and the connection member interface part 1031 are hermetically connected with the lead wires of the stator winding 1013 protruding therethrough. Specifically, the control member interface part 1022 and the connection member interface part 1031 are sealingly connected to the lead wires of the stator winding 1013 protruding therethrough by a sealant. More specifically, the sealant is filled in the gap between the connector interface 1031 and the lead wires of the stator winding 1013 and the sealant is filled in the gap between the control interface 1022 and the lead wires of the stator winding 1013. This improves the waterproofing effect at the gap between the control interface part 1022 and the lead wires of the stator winding 1013 and the waterproofing effect at the gap between the connection interface part 1031 and the lead wires of the stator winding 1013, respectively.

A fifth possible waterproof failure part is a socket part 102 (shown in fig. 1 and 3), and a waterproof member (not shown) is provided at the socket part 1021 to improve the waterproof effect. Specifically, the waterproof member is a waterproof lock head adapted to engage with the socket portion 1021. The control member 102 is electrically connected to an external device through the socket 1021 and the waterproof lock head in turn.

The other part of the possible waterproof failure is the position of the stator winding 1013, and in order to improve the waterproof effect, the stator winding 1013 is covered by a sealant, so that the stator winding 1013 and the motor housing 1011 form an integral body and the other part of the fluid inside the motor housing 1011 is sealed.

The above mentioned "sealing" of the present invention refers to liquid sealing.

In summary, by providing the waterproof structure at the possible waterproof failure portion, external liquid (e.g., water) can be effectively prevented from entering the waterproof brushless motor, thereby prolonging the service life of the waterproof brushless motor 10 and the device. Moreover, through the above waterproof structure, the waterproof brushless motor of the present invention can achieve the waterproof effect of IP 68.

Furthermore, compared with the motor housing 1011 and the control member 102 which are integrally formed, the present invention adopts the connecting member 103 to connect the separated motor housing 1011 and the control member 102, which not only simplifies the production process but also facilitates the operation of the user.

Although some embodiments have been described herein by way of example, various modifications may be made to these embodiments without departing from the spirit of the invention, and all such modifications are intended to be included within the scope of the invention as defined in the following claims.

The particular embodiments disclosed herein are illustrative only, as the invention may be modified in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein, and the embodiments disclosed are therefore to be considered illustrative only, and not limited to the details of construction or design herein shown, unless otherwise specified in the claims. Accordingly, the exemplary embodiments disclosed above are susceptible to various substitutions, combinations or modifications, all of which are within the scope of the disclosure. Also, the terms in the claims have their plain, ordinary meaning unless otherwise explicitly and clearly defined by the applicant.

In addition, the number of components in the claims includes one or at least one unless otherwise specified. If there is any inconsistency between the words or terms used in the present invention and the usage or meaning in other documents, the definitions of the words or terms used in the present invention shall be applied.

Claims

1. A waterproof brushless motor (10), characterized in that the waterproof brushless motor (10) comprises:

a motor main body (101) including a motor housing (1011), a motor rotating shaft (1012), and a stator winding (1013) provided in the motor housing, the motor housing (1011) having an opening (1014) allowing the motor rotating shaft (1012) to protrude therefrom;

a control (102) having a socket portion (1021) and a control interface portion (1022), the control (102) being electrically connected with an external device via the socket portion (1021);

a connector (103) connecting the motor main body (101) and the control member (102) and having a connector interface part (1031), the connector interface part (1031) being configured to communicate with the control member interface part (1022) when the motor main body (101), the connector (103), and the control member (102) are assembled;

wherein the motor rotating shaft (1012) is connected with the opening part (1014) in a sealing way, the connecting piece (103) is connected with the joint of the motor shell (1011) in a sealing way, the connecting piece (103) is connected with the joint of the control piece (102) in a sealing way, the control piece interface part (1022) and the connecting piece interface part (1031) are configured to be connected with the lead wires of the stator winding (1013) extending out of the control piece interface part in a sealing way, and the socket part (1021) is provided with a waterproof piece so as to prevent external liquid from entering the waterproof brushless motor.

2. The waterproof brushless motor (10) according to claim 1, wherein the motor shaft (1012) and the opening portion (1014) are sealingly connected by a first seal ring (1015).

3. The waterproof brushless motor (10) according to claim 1, wherein a joint of the connecting member (103) and the motor housing (1011) is sealingly connected by a second seal ring (104).

4. The waterproof brushless motor (10) of claim 1, characterized in that the motor housing (1011), the control member (102), and the connecting member (103) are fixedly connected by a locking member (105).

5. The waterproof brushless motor (10) according to claim 1, wherein a joint of the connection member (103) and the control member (102) is hermetically connected by a sealant.

6. The waterproof brushless electric machine (10) of claim 5, characterized in that the surface of the connector (103) is provided with a groove (1033) suitable for filling the sealant.

7. The waterproof brushless electric machine (10) of claim 6, characterized in that the number of grooves (1033) is at least 1.

8. The waterproof brushless motor of claim 1, wherein the control member interface part (1022) and the connection member interface part (1031) are sealingly connected with leads of the stator windings (1013) protruding therethrough by a sealant.

9. The waterproof brushless motor (10) of claim 1, characterized in that the waterproof member is a waterproof lock adapted to engage with the socket portion (1021).

10. The waterproof brushless electric machine (10) of claim 1, wherein the stator windings (1013) are adapted to be fluid-tight with other portions inside the motor housing (1011) by being coated with a sealant.