Waterproof motor

Abstract

The utility model discloses a waterproof motor, which comprises a shell, a stator and an end cover, the end cover is arranged on the end part of the shell, the stator is arranged in the shell, the stator is provided with an insulating sleeve, a winding coil and a connector assembly, the connector assembly is provided with a conductive wiring block, a wiring mounting seat and a wire bunching block, the wiring mounting seat is an arc-shaped block body extending along the circumferential direction of the stator, and the wiring mounting seat is an arc-shaped block body extending along the circumferential direction of the stator. The arc-shaped block body is in fastening fit with part of the wire tripping column in the insulating sleeve, the lower end of the conductive wiring block is inserted into the wire tripping column, one side of the conductive wiring block is provided with a jacking structure which is in jacking fit with the wiring mounting base, the winding connecting wire is wound on the jacking structure, and the upper end of the conductive wiring block upwards penetrates through the wiring mounting base in a tight fit mode. A connecting wire is installed at the upper end of the conductive wiring block, the bunching block is a waterproof block, the connecting wire penetrates through the bunching block in a tight fit mode, and the bunching block and the shell are integrally formed in an injection molding mode. Compared with the prior art, the stator and the shell are integrally formed, the waterproof effect is better, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of waterproof motors, and in particular to a waterproof motor. Background Technology

[0002] Existing motors generally include a housing, rotor, stator, and shaft. Both the stator and rotor are housed within the housing. The rotor rotates within the housing, while the stator is fixed within the housing and fitted onto the outside of the rotor. The shaft rotates within the housing and is fixedly connected to the rotor. One end of the shaft extends out of the housing, forming the front end. A front cover is sealed on the front end of the housing, and a rear cover is sealed on the rear end. In this type of motor, the housing is injection molded. During manufacturing, the stator is first manufactured independently and then placed in an injection mold to be integrally injection molded with the housing. Finally, the rotor and shaft are installed within the housing and sealed with the front and rear covers. The existing stator includes an insulating frame, winding coils, a stator core, and connectors. The end face of the insulating frame extends with trip posts. The winding coils are wound on the insulating frame, and the stator core is located on the outer surface of the insulating frame. The winding coils are connected in series via winding connecting wires, which are wound around the trip posts. The winding connecting wires are electrically connected to the connectors. The connectors are located on the outer wall of the motor housing, and the housing has an integrally molded receiving seat for accommodating the connectors. The receiving seat has a plug-in interface for external wiring to electrically connect to the connectors. With connectors on the outer wall of the housing, if moisture is present in the external environment, water can easily seep into the connectors through the plug-in interface, resulting in poor waterproofing and a short service life.

[0003] In view of this, the inventors of this case conducted in-depth research on the problem, which led to the creation of this case. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof motor to solve the problems of poor waterproof function and short service life of existing waterproof motors.

[0005] To achieve its purpose, this utility model adopts the following technical solution:

[0006] A waterproof motor includes a housing, a stator, and an end cover. The end cover is installed on the end of the housing, and the stator is located inside the housing. The stator has an insulating sleeve, a winding coil, and a connector. Several spaced, circumferentially distributed tripwire posts extend integrally from the first end face of the insulating sleeve. A winding connecting wire is connected to the winding coil and wound around the tripwire posts. The winding connecting wire is electrically connected to the connector. The connector has a conductive terminal block, a terminal mounting base, and a wire harness block. The terminal mounting base is an arc-shaped block extending circumferentially along the stator. The arc-shaped block is tightly fitted with a portion of the tripwire posts in the insulating sleeve. The lower end of the conductive terminal block is inserted into the tripwire post, and one side of the conductive terminal block has a support structure that supports the terminal mounting base. The winding connecting wire is wound around the support structure. The upper end of the conductive terminal block passes through the terminal mounting base upwards. A connecting wire is installed on the upper end of the conductive terminal block. The wire harness block is a waterproof block, and the connecting wire passes through the wire harness block. The wire harness block and the housing are integrally injection molded.

[0007] The wiring mounting base has an upper plate and a side plate. Both the upper plate and the side plate are convex arc plates that bulge outward. The side plate is engaged on some of the tripwire posts. The side plate is located outside the bottom surface of the upper plate. The bottom surface of the upper plate is provided with several partition plates that connect to the inner side of the side plate. Between each pair of partition plates, the upper plate, and the side plate, there is a locking groove for a tripwire post to engage. The top holding structure of the conductive wiring block is held against the bottom surface of the upper plate. The upper end of the conductive wiring block extends out of the upper plate and is integrally formed with the upper plate.

[0008] The conductive terminal block is a metal conductive block. The conductive terminal block has a terminal segment, a connecting segment, and a winding segment. The terminal segment, connecting segment, and winding segment are arranged in sequence, and the terminal segment and the winding segment are connected by the connecting segment. The terminal segment has a vertically arranged strip structure. The upper end of the terminal segment extends out of the top surface of the upper plate and is connected to the connecting wire. The connecting segment has a vertically arranged horizontal part and a vertical part. The vertical part is located on the lower side of the terminal segment, and the horizontal part is located on the upper outer side of the vertical part. The winding segment is located on the side of the horizontal part facing away from the terminal segment, and the winding connecting wire is wound on the winding segment.

[0009] The winding segment has two clamps, which are arranged opposite each other. The lower clamp is connected to the side of the horizontal part facing away from the connecting segment, and the inner ends of the two clamps are integrally connected and set at an acute angle. The upper clamp rests on the bottom surface of the upper plate. The outer ends of the two clamps are set opposite each other and form a horn structure that gradually expands from the inside to the outside. The opposite sides of the two clamps are recessed with winding grooves for the winding connecting wire to be wound on. The two clamps constitute the above-mentioned supporting structure.

[0010] The top surface of the tripwire post is recessed with a limiting groove extending in the vertical direction. The outer wall of the tripwire post is provided with a connecting groove that is connected to the limiting groove and extends to the outside of the top surface of the tripwire post. The lower end and the vertical part of the wiring segment are locked in the limiting groove, and the horizontal part extends outward from the connecting groove.

[0011] The upper plate has an integrally formed connecting post located outside the upper end of the wiring segment. The connecting post extends out of the top surface of the upper plate and has an extension groove that runs through it from top to bottom, allowing the upper end of the wiring segment to extend out of the top surface of the connecting post. The connecting post and the upper end of the wiring segment are integrally formed.

[0012] The wire harness block has a first block and a second block that are fastened together. The first block has a wire pressing block protruding on one side facing the second block. The second block has a wire pressing groove for the wire pressing block to be embedded in. The bottom of the wire pressing block and the wire pressing groove are both provided with a wire passing groove for the connecting wire to pass through tightly and laterally through the wire harness block. The connecting wire between the wire harness block and the upper end of the connector segment, the wire harness block and the upper end of the connector segment are all integrally injection molded with the outer shell.

[0013] This novel waterproof motor, during assembly, firstly connects the upper end of the conductive terminal block to the terminal mounting base, extending the upper end of the conductive terminal block beyond the top surface of the terminal mounting base. Then, inserts the lower end of the conductive terminal block into the tripwire post, thus completing the connection between the conductive terminal block, the terminal mounting base, and the tripwire post. Next, electrically connects the connecting wire to the upper end of the conductive terminal block, and then tightly connects the outer end of the connecting wire to the wire harness block, thus completing the stator assembly. Finally, the assembled stator is placed into an injection mold and integrally injection molded with the outer shell. During the injection molding of the outer shell, the wire harness block, connecting wire, terminal mounting base, and the upper end of the conductive terminal block are all integrally injection molded with the outer shell, making the entire stator and outer shell integrally formed. Compared with existing technologies, the integral structure of the stator and outer shell prevents moisture from entering the stator interior through the wire harness block, resulting in better waterproofing and a longer service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the present invention, omitting the outer shell and connecting wires.

[0016] Figure 3 This is a structural schematic diagram of the stator without wiring mounting base and wire harness block of this utility model.

[0017] Figure 4 This is a schematic diagram of the wiring mounting base of this utility model.

[0018] Figure 5 This is a schematic diagram of the conductive terminal block of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the wire harness block of this utility model. Detailed Implementation

[0020] To further explain the technical solution of this utility model, a detailed description is provided below in conjunction with the accompanying drawings.

[0021] A waterproof motor, such as Figures 1-6 As shown, the device includes a housing 1 and a rotor 11, a stator, and a shaft 12 located within the housing 1. The rotor 11 has a circular structure, extending from the inside to the outside in the radial direction of the rotor. The stator is fixed inside the housing 1 and sleeved on the outside of the rotor 11. The shaft 12 is rotatably disposed within the housing 1 and is fixedly connected to the rotor 12. One end of the shaft 12 extends out of the housing 1, and the end of the shaft 12 extending out of the housing 1 is the lower end. A lower end cover 13 is sealed and installed on the lower end of the housing 1. The lower end of the shaft 12 extends out of the lower end cover 13 and is sealed and fitted with the lower end cover 13. The upper end is sealed with an upper end cover 14. The stator has an insulating sleeve, a winding coil, and a connector. Several spaced and distributed tripwire posts 15 extend integrally from the upper end face of the insulating sleeve. A winding connecting wire is connected to the winding coil and is wound around the tripwire posts 15. The winding connecting wire is electrically connected to the connector. The sealing installation method of the lower end cover 13 and the upper end cover 14 with the outer shell, the specific structure and working principle of the insulating sleeve and the winding coil, and the specific structure of the rotor and the way it cooperates with the stator to make the shaft rotate are known technologies and will not be described in detail here.

[0022] The improvement of this invention is that the connector has a conductive terminal block 2, a terminal mounting base 3, and a wire harness block 4. The terminal mounting base 3 is an arc-shaped block extending circumferentially along the stator, and the arc-shaped block is fastened to a portion of the tripwire posts 15 in the insulating sleeve. Specifically, the terminal mounting base 3 has an upper plate 31 and a side plate 32. Both the upper plate 31 and the side plate 32 are outwardly convex arc plates. The side plate 32 is located outside the bottom surface of the upper plate 31, and the bottom surface of the upper plate 31 is provided with several partition plates 311 connected to the inner side of the side plate 32. A locking groove is formed between each pair of partition plates 311, the upper plate 31, and the side plate 32 for a tripwire post 15 to engage. In application, each tripwire post 15 is engaged in the locking groove one by one.

[0023] One side of the conductive connector 2 has a support structure that engages with the connector mounting base 3, and the winding connection wire is wound around the support structure. Specifically, the conductive connector 2 is a metal conductive block, and the support structure of the conductive connector 2 abuts against the bottom surface of the upper plate 31. The conductive connector 2 has a connector segment 21, a connecting segment 22, and a winding segment 23, which are arranged sequentially. The connector segment 21 and the winding segment 23 are connected by the connecting segment 22. The connector segment 21 is a vertically arranged strip structure that extends vertically out of the upper plate 31. The connecting segment 22 has a vertically arranged horizontal part 221 and a vertical part 222, with the vertical part 222 standing upright at the connection point. On the lower end of segment 21, the horizontal part 221 is located on the outer side of the upper end of the vertical part 222. The winding segment 23 is located on the side of the horizontal part 221 facing away from the connecting segment 21. The winding connecting wire is wound on the winding segment 23. That is, the winding segment 23 has two clamps. The two clamps are arranged opposite each other. The lower clamp is connected to the side of the horizontal part 221 facing away from the connecting segment 21. The inner ends of the two clamps are integrally connected and set at an acute angle. The upper clamp rests on the bottom surface of the upper plate 31. The outer ends of the two clamps are set opposite each other and form a horn structure that gradually expands from the inside to the outside. The opposite sides of the two clamps are both recessed with winding grooves for the winding connecting wire to be wound on. The two clamps constitute the above-mentioned supporting structure. In application, the two clamps are set at an angle to each other. When the winding connecting wire is wound on the clamps, the two clamps are pressed against each other. When the winding connecting wire is completed, the two clamps are released and the two clamps can expand in opposite directions, so that the winding connecting wire can be tightly wound on the winding segment 23. Moreover, the setting of the winding groove facilitates the winding of the winding connecting wire.

[0024] The lower end of the conductive connector 2 is inserted into the tripwire post 15. Specifically, the top surface of the tripwire post 15 is recessed with a limiting groove 100 extending vertically. The outer wall of the tripwire post has a connecting groove 200 that communicates with the limiting groove 100 and extends to the outside of the top surface of the tripwire post 15. The lower end of the connector segment 21 and the vertical part 222 are engaged in the limiting groove 100. The horizontal part 221 extends outward from the connecting groove 200, that is, the inner side of the vertical part 222 is recessed with a positioning groove. The inner wall of the limiting groove 100 is provided with a positioning block that is embedded in the positioning groove at a position corresponding to the positioning groove. In application, the winding connecting wire is wound on the winding groove, and then the lower end of the connector segment 21 and the vertical part 222 are inserted into the limiting groove 100. When the positioning block falls into the positioning groove, the conductive connector 2 is inserted into place.

[0025] The upper end of the conductive connector 2 is tightly fitted upwards through the connector mounting base 3, and a connecting wire (not shown in the figure) is installed on the upper end of the conductive connector 2. Specifically, the upper end of the connector segment 21 extends out of the top surface of the upper plate 31 and connects to the connecting wire. That is, the upper end of the connector segment 21 has a through-hole 300, and the connecting wire passes through the through-hole 300 to electrically connect to the upper end of the connector segment 21. The upper end of the connector segment 21 extends out of the upper plate 31 and is integrally formed with the upper plate 31. That is, the upper plate 31 has an integrally formed connecting post 31 located outside the upper end of the connector segment 21. 2. The connecting post 312 extends beyond the top surface of the upper plate. The connecting post 312 has a through groove that allows the upper end of the wiring segment 21 to extend beyond the top surface of the connecting post 312. The connecting post 211 and the upper end of the wiring segment 21 are integrally formed. Preferably, if a single-phase motor is being produced, there are three locking grooves, and the three tripwire posts are locked into the locking grooves one by one. Three conductive wiring blocks 2 extend beyond the top surface of the upper plate 31, and the three conductive wiring blocks 2 are connected to the neutral wire, live wire, and ground wire, respectively. Similarly, if a multi-phase motor is being produced, the number of conductive wiring blocks 2 can be adjusted as needed. In application, after the upper end of the wiring segment 21 is integrally formed with the connecting post 312, that is, the conductive wiring block 2 is integrally connected with the wiring mounting base 3, the lower end of the wiring segment 21 and the vertical part 222 are inserted into the limiting groove 100, that is, the conductive wiring block 2 and the wiring mounting base 3 are connected to the tripwire post 15.

[0026] The cable bundle 4 is a waterproof block. The connecting wires fit tightly through the cable bundle 4. The cable bundle 4 and the outer shell 11 are integrally injection molded. Specifically, the cable bundle 4 is located on the upper end of the outer shell. The cable bundle 4 has a first block 41 and a second block 42 that are interlocked. The first block 41 has a wire pressing block 411 protruding on the side facing the second block 42. The second block 42 has a wire pressing groove for the wire pressing block 411 to be embedded in. The bottom of the wire pressing block and the wire pressing groove are both provided with a wire passing groove 400 for the connecting wires to fit tightly through and pass through the cable bundle 4 laterally. The first block 41 has a groove outside the position of the wire pressing block 411. The second block 42 has a protruding post 421 extending into the groove at the position corresponding to the groove. The connecting wires between the cable bundle 4 and the upper end of the connector segment 21, the cable bundle 4, and the upper end of the connector segment 21 are all integrally injection molded with the outer shell 11. The integral injection molding method in this invention is a well-known technology to those skilled in the art and will not be described in detail here. In application, the outer end of the connecting wire is passed through the wire groove, and the first block 41 and the second block 42 are fastened together by the cooperation of the groove and the protrusion 421. Furthermore, since the upper end of the conductive connector 2, the connecting wire and the wire harness block 4 are integrally injection molded with the outer shell, the injection molding material integrally injection molded with the outer shell fills the internal space of the outer shell. Due to the isolation of the injection molding material, water cannot enter from the wire harness block, so the conductive connector 2 has a good waterproof effect. At the same time, the connecting post 312 is integrally molded with the conductive connector 2, which can enhance the waterproof effect of the conductive connector 2.

[0027] In this novel waterproof motor, during assembly, the upper end of the wiring segment 21 is first integrally connected to the wiring mounting base 3 via the connecting post 312, with the upper end of the wiring segment 21 extending beyond the top surface of the upper plate. Then, the lower end of the wiring segment 21 and the vertical part 222 are correspondingly inserted into the limiting groove 100 of the tripping post 15, simultaneously engaging the tripping post 15 within the engaging groove. This completes the connection between the conductive wiring block 2, the wiring mounting base 3, and the tripping post 15. The connecting wire is electrically connected to the upper end of the wiring segment 21. The outer end of the connecting wire is then tightly fitted to the wire harness block 4, completing the stator assembly. Finally, the assembled stator is placed into an injection mold and integrally injection molded with the outer shell. During the injection molding of the outer shell, the wire harness block 4, the connecting wire, the wiring mounting base 3, and the upper ends of the conductive wiring block 2 are all integrally injection molded with the outer shell, making the entire stator and outer shell integrally molded. Compared with existing technologies, the integral injection molding of the stator and outer shell prevents moisture from entering the stator interior through the wire harness block 4, resulting in a better waterproof effect.

[0028] The product form of this utility model is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this utility model.

Claims

1. A waterproof motor, comprising a housing, a stator, and an end cover, wherein the end cover is sealed and installed on the end of the housing, the stator is located inside the housing, the stator has an insulating sleeve, a winding coil, and a connector, wherein a plurality of spaced-apart trip posts are integrally extended from the first end face of the insulating sleeve, a winding connecting wire is connected to the winding coil, the winding connecting wire is wound around the trip posts, and the winding connecting wire is electrically connected to the connector; characterized in that: The connector has a conductive terminal block, a terminal mounting base, and a wire harness block. The terminal mounting base is an arc-shaped block extending circumferentially along the stator. The arc-shaped block is tightly fitted with a portion of the tripwire post in the insulating sleeve. The lower end of the conductive terminal block is inserted into the tripwire post, and one side of the conductive terminal block has a support structure that engages with the terminal mounting base. The winding connecting wire is wound on the support structure. The upper end of the conductive terminal block is tightly fitted upward through the terminal mounting base. A connecting wire is installed on the upper end of the conductive terminal block. The wire harness block is a waterproof block, and the connecting wire is tightly fitted through the wire harness block. The wire harness block and the outer shell are integrally injection molded.

2. A waterproof motor according to claim 1, characterized in that: The wiring mounting base has an upper plate and a side plate. Both the upper plate and the side plate are convex arc plates that bulge outward. The side plate is located outside the bottom surface of the upper plate. The bottom surface of the upper plate is provided with several partition plates that connect to the inner side of the side plate. A locking groove is formed between each pair of partition plates, the upper plate, and the side plate for a tripping post to engage. The top holding structure of the conductive wiring block is held on the bottom surface of the upper plate. The upper end of the conductive wiring block extends out of the upper plate and is integrally formed with the upper plate.

3. A waterproof motor according to claim 2, characterized in that: The conductive terminal block is a metal conductive block. The conductive terminal block has a terminal segment, a connecting segment, and a winding segment. The terminal segment, connecting segment, and winding segment are arranged in sequence, and the terminal segment and the winding segment are connected by the connecting segment. The terminal segment has a vertically arranged strip structure. The upper end of the terminal segment extends out of the top surface of the upper plate and is connected to the connecting wire. The connecting segment has a vertically arranged horizontal part and a vertical part. The vertical part is located on the lower side of the terminal segment, and the horizontal part is located on the upper outer side of the vertical part. The winding segment is located on the side of the horizontal part facing away from the terminal segment, and the winding connecting wire is wound on the winding segment.

4. A waterproof motor according to claim 3, characterized in that: The winding segment has two clamps, which are arranged opposite each other. The lower clamp is connected to the side of the horizontal part facing away from the connecting segment, and the inner ends of the two clamps are integrally connected and set at an acute angle. The upper clamp rests on the bottom surface of the upper plate. The outer ends of the two clamps are set opposite each other and form a horn structure that gradually expands from the inside to the outside. The opposite sides of the two clamps are recessed with winding grooves for the winding connecting wire to be wound on. The two clamps constitute the above-mentioned supporting structure.

5. A waterproof motor according to claim 3, characterized in that: The top surface of the tripwire post is recessed with a limiting groove extending in the vertical direction. The outer wall of the tripwire post is provided with a connecting groove that is connected to the limiting groove and extends to the outside of the top surface of the tripwire post. The lower end and the vertical part of the wiring segment are locked in the limiting groove, and the horizontal part extends outward from the connecting groove.

6. A waterproof motor according to claim 3, characterized in that: The upper plate has an integrally formed connecting post located outside the upper end of the wiring segment. The connecting post extends out of the top surface of the upper plate and has an extension groove that runs through it from top to bottom, allowing the upper end of the wiring segment to extend out of the top surface of the connecting post. The connecting post and the upper end of the wiring segment are integrally formed.

7. A waterproof motor according to claim 3, characterized in that: The wire harness block has a first block and a second block that are fastened together. The first block has a wire pressing block protruding on one side facing the second block. The second block has a wire pressing groove for the wire pressing block to be embedded in. The bottom of the wire pressing block and the wire pressing groove are both provided with a wire passing groove for the connecting wire to pass through tightly and laterally through the wire harness block. The connecting wire between the wire harness block and the upper end of the connector segment, the wire harness block and the upper end of the connector segment are all integrally injection molded with the outer shell.

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