CN213817418U

CN213817418U - Direct-current water-fetching motor

Info

Publication number: CN213817418U
Application number: CN202121164300.5U
Authority: CN
Inventors: 彭东琨; 黄志荣
Original assignee: Foshan Shunde Lepuda Motor Co ltd
Current assignee: Foshan Shunde Lepuda Motor Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-07-27
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a direct current water-beating motor, which comprises a stator assembly, a rotor assembly and a rotating shaft, wherein the stator assembly comprises a front shell and a stator coil arranged in the front shell, and the rotating shaft passes through the front shell and is fixedly connected with the rotor assembly; the stator coil and the rotor assembly are arranged in the sealed cavity; the front shell and the rear cover body are connected through a buckle; the direct-current water beating motor is good in sealing performance and high in safety.

Description

Direct-current water-fetching motor

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a direct current motor of fetching water.

Background

Some existing dc brushless water-fetching motors are shown in fig. 7, and include a stator assembly 1 ', a rotor assembly 2', a control board 3 'and a rotating shaft 4'; the stator assembly 1 'comprises a front shell 101' and a stator coil 102 'arranged in the front shell 101'; the rotor assembly 2 ' includes an end cap 201 ' having a front portion protruding into the front case 101 ' and a magnet 202 ' disposed on an inner circumferential surface of the end cap 201 '; the rear end of the rotation shaft 4 ' passes through the front case 101 ' and is fixedly coupled to the end cap 201 '. In operation, the front housing 101 ' is fixed to the apparatus, and current is supplied to the stator coil 102 ' through the control board 3 ', and the current in the stator coil 102 ' cuts the magnetic induction lines of the magnet 202 ' to rotate the rotor assembly 2 ' and thus the rotary shaft 4 '.

In the water-fetching motor, because the end cover 201 'needs to rotate relative to the front casing 101', a certain gap needs to be left between the end cover 201 'and the front casing 101', the sealing performance is poor, and external moisture easily enters the motor through the gap to cause short circuit.

It is seen that the prior art is susceptible to improvements and enhancements.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the embodiment of the application aims to provide a direct-current water beating motor which is good in sealing performance.

The embodiment of the application provides a direct-current water-fetching motor, which comprises a stator assembly, a rotor assembly and a rotating shaft, wherein the stator assembly comprises a front shell and a stator coil arranged in the front shell, and the rotating shaft penetrates through the front shell and is fixedly connected with the rotor assembly; the direct-current water-fetching motor further comprises a rear cover body covering the rear side of the front shell, a sealing cavity is enclosed by the rear cover body and the front shell, and the stator coil and the rotor assembly are arranged in the sealing cavity.

The direct current motor of fetching water of this application embodiment connects a back lid through the back side cap of casing in the front, makes to enclose into sealed chamber between back lid and the procapsid, and stator coil and rotor assembly all set up at this sealed intracavity to can avoid steam to get into the inside circuit short circuit that arouses of motor, the leakproofness is good.

Preferably, the front cover and the rear cover are connected by a snap connection.

Preferably, the rear end of the front housing is provided with an insertion part, and the peripheral surface of the insertion part is provided with an annular clamping groove; the front side of the rear cover body is provided with a sleeve joint part matched with the plug joint part, and the inner circumferential surface of the sleeve joint part is provided with a bulge part matched with the annular clamping groove; the sleeve joint part is sleeved on the insertion part, and the protruding part extends into the annular clamping groove.

Preferably, the protruding portion comprises a plurality of arc-shaped clamping strips which are evenly distributed along the circumferential direction of the rear cover body.

Preferably, the upper end of the boss is chamfered or rounded, and the outer side of the lower end of the insertion part is chamfered or rounded.

Preferably, the rear cover is a plastic cover.

Preferably, the outer circumferential surface of the rear cover body is provided with anti-slip lines.

Preferably, a retainer ring is provided on the rotation shaft at a front side of the front housing.

Preferably, the direct current motor of fetching water, still include the control panel, the control panel sets up in the procapsid, the line hole has been seted up to the procapsid, the lead wire of control panel is followed the line hole stretches out outside the procapsid, cross the line hole with sealed glue of embedment between the lead wire.

Has the advantages that:

the embodiment of the application provides a direct current motor of fetching water, lid after the back side cap through casing in the front connects, makes to enclose into the seal chamber between lid and the procapsid, and stator coil and rotor assembly all set up in this seal chamber to can avoid steam to get into the inside circuit short circuit that arouses of motor, compare with prior art, its leakproofness is better, the security is higher.

Drawings

Fig. 1 is a schematic structural view of a direct current water pumping motor provided by an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion S in fig. 1.

Fig. 3 is a front view of the front housing in the dc water pump motor provided by the embodiment of the present invention.

Fig. 4 is a perspective view of a rear cover body in the direct-current water-pumping motor provided by the embodiment of the present invention.

Fig. 5 is a perspective view of the direct current water pumping motor provided by the embodiment of the present invention.

Fig. 6 is a front view of the dc water pump motor provided by the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a conventional dc brushless water-beating motor.

Description of reference numerals: 1. a stator assembly; 101. a front housing; 102. a stator coil; 103. a connecting pipe; 104. a bearing; 105. a plug-in part; 106. an annular neck; 107. connecting a lug plate; 108. a wire passing hole; 2. a rotor assembly; 201. an end cap; 202. a magnet; 3. a rotating shaft; 4. a rear cover body; 401. a socket joint part; 402. a boss portion; 403. anti-skid lines; 5. sealing the cavity; 6. a retainer ring; 7. a control panel; 701. and (7) leading wires.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following disclosure provides embodiments or examples for implementing different configurations of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

For convenience of description, herein, front means a direction away from the rotor assembly 2 in the axial direction of the rotating shaft 3, i.e., an upper side in fig. 1; the rear is opposite the front, i.e. the lower side in fig. 1.

Referring to fig. 1-6, a dc water-fetching motor provided in an embodiment of the present application includes a stator assembly 1, a rotor assembly 2, and a rotating shaft 3, where the stator assembly 1 includes a front housing 101 and a stator coil 102 disposed in the front housing 101, and the rotating shaft 3 penetrates through the front housing 101 and is fixedly connected to the rotor assembly 2; the direct current water beating motor further comprises a rear cover body 4 covering the rear side of the front shell 101, a sealed cavity 5 is defined by the rear cover body 4 and the front shell 101, and the stator coil 102 and the rotor assembly 2 are arranged in the sealed cavity 5.

This direct current motor of fetching water connects a back lid 4 through the back side cap at casing 101 in the front, makes to enclose into sealed chamber 5 between back lid 4 and the casing 101, and stator coil 102 and rotor assembly 2 all set up in this sealed chamber 5 to can avoid steam to get into the inside circuit short circuit that arouses of motor, compare with prior art, its leakproofness is better, the security is higher.

Specifically, in some embodiments, referring to fig. 1, a connection pipe 103 is provided at a middle portion of the front housing 101, the stator coil 102 is disposed around the connection pipe 103, the rotation shaft 3 is penetrated through the connection pipe 103, and bearings 104 are provided at front and rear portions of the connection pipe 103, and the rotation shaft 3 is connected to the connection pipe 103 through the bearings 104. The rotor assembly 2 comprises an end cover 201 sleeved outside the stator coil 102 and a magnet 202 arranged inside the end cover 201, and gaps are formed between the end cover 201 and the front cover body 101 and between the end cover 201 and the rear cover body 4 (the end cover 201 is not in contact with the front cover body 101 and the rear cover body 4); the rear end of the rotating shaft 3 is fixedly connected with the end cover 201. In operation, a current is applied to the stator coil 102, and the current cuts the magnetic induction lines of the magnet 202 to generate power, so that the rotor assembly 2 rotates, and the rotating shaft 3 is driven to rotate.

In the present embodiment, referring to fig. 3, 5 and 6, a plurality of connection tabs 107 are disposed on the front case 101, and the connection tabs 107 are used for connecting and fixing with an external device. In fig. 3, two connection tabs 107 are provided, the two connection tabs 107 are symmetrically provided on the circumferential surface of the front housing 101, and the connection tabs 107 are provided with mounting holes for connection screws to pass through; but is not limited thereto.

The front case 101 and the rear cover 4 may be connected by, but not limited to, a screw connection, an adhesive connection, a snap connection, or the like.

In some preferred embodiments, the front case 101 and the rear cover 4 are snap-fit connected. On the one hand, the assembly is convenient, and on the other hand, the rear cover body 4 is convenient to open for overhauling and maintaining the motor.

In some embodiments, see fig. 2, 3 and 4, the rear end of the front housing 101 is provided with a plug part 105, and an annular clamping groove 106 is provided on the outer circumferential surface of the plug part 105; a sleeve joint part 401 matched with the plug-in part 105 is arranged on the front side of the rear cover body 4, and a bulge part 402 matched with the annular clamping groove 106 is arranged on the inner circumferential surface of the sleeve joint part 401; the socket portion 401 is sleeved on the plug portion 105, and the protrusion portion 402 extends into the annular slot 106. During assembly, the sleeve-connecting part 401 is directly sleeved on the insertion-connecting part 105, and due to the clamping effect between the protruding part 402 and the annular clamping groove 106, the connection reliability between the front casing 101 and the rear cover 4 can be effectively ensured.

Wherein the boss 402 may be a full circle annular snap strip. As shown in fig. 4, the protruding portion 402 may include a plurality of arc-shaped clamping strips uniformly arranged along the circumferential direction of the rear cover body; compare with the annular card strip of whole circle, because the interval has between the arc card strip, cover the in-process of procapsid 101 to back lid 4, the interval between the arc card strip provides the space that the arc card strip warp, makes back lid 4 can more smoothly cover the rear end of procapsid 101.

In order to further improve the smoothness of the process of covering the rear cover 4 into the front case 101, the upper end of the boss 402 may be chamfered or rounded, and the outer side of the lower end of the insertion part 105 may be chamfered or rounded, as shown in fig. 2.

In some preferred embodiments, the rear cover 4 is a plastic cover. Because the plastics lid has certain elasticity, on the one hand, can further improve the smooth and easy nature of back lid 4 lid income procapsid 101 process, on the other hand, back lid 4 after the connection can more closely press front casing 101 rear end to improve leakproofness.

In some preferred embodiments, referring to fig. 4, the outer circumferential surface of the rear cover 4 is provided with anti-slip threads 403 to prevent slipping during the process of attaching and detaching the rear cover 4.

Preferably, referring to fig. 1, 5 and 6, a retainer ring 6 is disposed on the spindle 3 at a front side of the front housing 101. When water flows to the motor body along the axial direction of the rotating shaft 3 on the surface of the rotating shaft 3, the water is separated and dispersed due to the action of the retainer ring 6, so that the water can be prevented from directly impacting the joint of the rotating shaft 3 and the front shell 101, and the water can be prevented from entering the motor from the gap between the rotating shaft 3 and the front shell 101. Specifically, the rotating shaft 3 is provided with a positioning groove, and the check ring 6 is clamped in the positioning groove, so that the axial positioning of the check ring 6 is realized.

Further, as shown in fig. 1 and 5, the direct current water pumping motor further comprises a control board 7, the control board 7 is disposed in the front housing 101, the front housing 101 is provided with a wire passing hole 108, a lead 701 of the control board 7 extends out of the front housing 101 from the wire passing hole 108, and a sealant is filled and sealed between the wire passing hole 108 and the lead 701. Since the control board 7 is disposed in the front case 101, the structure is compact. The water fetching motor is a direct current motor, the number of the leads 701 is two, and the two leads 701 extend out of the same wire passing hole 108.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and the embodiments are substantially the same as the present invention.

Claims

1. A direct-current water-fetching motor comprises a stator assembly (1), a rotor assembly (2) and a rotating shaft (3), wherein the stator assembly (1) comprises a front shell (101) and a stator coil (102) arranged in the front shell (101), and the rotating shaft (3) penetrates through the front shell (101) and is fixedly connected with the rotor assembly (2); the motor is characterized by further comprising a rear cover body (4) covering the rear side of the front shell (101), wherein a sealed cavity (5) is defined by the rear cover body (4) and the front shell (101), and the stator coil (102) and the rotor assembly (2) are arranged in the sealed cavity (5); the front shell (101) is connected with the rear cover body (4) in a snap-fit mode.

2. The direct-current water beating motor according to claim 1, wherein the rear end of the front housing (101) is provided with an insertion part (105), and the outer circumferential surface of the insertion part (105) is provided with an annular clamping groove (106); a sleeve joint part (401) matched with the plug-in part (105) is arranged on the front side of the rear cover body (4), and a bulge part (402) matched with the annular clamping groove (106) is arranged on the inner circumferential surface of the sleeve joint part (401); the sleeve joint part (401) is sleeved on the plug-in connection part (105), and the protruding part (402) extends into the annular clamping groove (106).

3. The direct-current water beating motor according to claim 2, wherein the protruding portion (402) comprises a plurality of arc-shaped clamping strips which are evenly distributed along the circumferential direction of the rear cover body (4).

4. The direct-current water beating motor according to claim 2, wherein the upper end of the protruding portion (402) is chamfered or rounded, and the outer side of the lower end of the inserting portion (105) is chamfered or rounded.

5. The direct current water beating motor according to claim 1, wherein the rear cover (4) is a plastic cover.

6. The direct-current water beating motor according to claim 1, wherein the outer peripheral surface of the rear cover body (4) is provided with anti-slip threads (403).

7. The direct current water beating motor according to claim 1, wherein a retainer ring (6) is provided on the rotating shaft (3) at the front side of the front housing (101).

8. The direct-current water beating motor according to claim 1, further comprising a control board (7), wherein the control board (7) is arranged in the front housing (101), the front housing (101) is provided with a wire passing hole (108), a lead (701) of the control board (7) extends out of the front housing (101) from the wire passing hole (108), and a sealant is encapsulated between the wire passing hole (108) and the lead (701).