Lawn mower, motor and wiring port

Abstract

The utility model discloses a mowing machine, motor and wiring port, said wiring port includes terminal seat, be equipped with a plurality of conductive terminal in the terminal seat and rotatablely with the cover plate of terminal seat connection, each conductive terminal includes inner end and outer end, the outer end is used for connecting one phase line of power supply, and the terminal seat is equipped with the terminal seat. The inner end is used for connecting a phase motor winding corresponding to the phase line, and when the cover plate is opened relative to the terminal seat, the outer end of the conductive terminal is exposed; when the cover plate covers the terminal seat, the outer ends of the conductive terminals are covered; according to the wiring port, the cover plate can be opened to facilitate connection of phase lines of a power supply, the cover plate can be covered after wiring is completed to shield dust, gravels, rainwater, grass clippings and the like in the external environment, and the situations of short circuit, open circuit and the like are avoided. The motor adopting the wiring port and the mower applying the motor can operate safely and stably after wiring is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a connection port of a motor. Background Art

[0002] As one of the common power devices, electric motors are widely used in various industries. For example, they are used as traction motors in lawn mowers to drive the wheels of the lawn mowers to move on the lawn, or as cutting motors to drive the blades of the lawn mowers to trim and trim the flowers and plants on the path of travel so that the lawn can be kept flat.

[0003] The motor used in the existing lawn mower includes a stator and a rotor that can rotate relative to the stator. The stator includes a coil. When the coil is energized, a changing magnetic field is generated. The magnetic field interacts with the magnetic field of the rotor to drive the rotor to rotate continuously, thereby driving the load. Usually, a terminal block is convexly provided on the outer wall of the motor for connecting the stator coil to an external power cord. However, after the power cord is connected, its connector is exposed, which is easily affected by the external environment and causes problems such as short circuit and open circuit, which needs further improvement. Utility Model Content

[0004] In view of this, a wiring port capable of shielding and protecting a wiring position, a motor using the wiring port, and a lawn mower using the motor are provided.

[0005] On the one hand, the utility model provides a wiring port, including a terminal seat, a plurality of conductive terminals arranged in the terminal seat, and a cover plate rotatably connected to the terminal seat, each conductive terminal including an inner end and an outer end, wherein the outer end is used to connect a phase line of a power supply, and the inner end is used to connect a phase motor winding corresponding to the phase line, when the cover plate is opened relative to the terminal seat, the outer end of the conductive terminal is exposed; when the cover plate is covered with the terminal seat, the outer end of the conductive terminal is covered; the cover plate is provided with a wiring mark corresponding to each of the conductive terminals, and the wiring marks are different.

[0006] In some embodiments, a wiring mark is provided on opposite sides of the cover plate corresponding to each conductive terminal.

[0007] In some embodiments, the power supply is a three-phase power supply, and the wiring mark of the cover plate includes three different wiring marks: "U", "V", and "W".

[0008] In some embodiments, the cover plate is also provided with a motor type identification.

[0009] In some embodiments, the terminal seat is provided with a first boss and a second boss at the top and the bottom thereof, respectively, and the cover plate is provided with an axial hole, and the axial hole is pivotally connected to the first boss or the second boss.

[0010] In some embodiments, the diameters of the first boss and the second boss are different, and the diameter of the shaft hole of the cover plate matches the diameter of one of the first boss and the second boss.

[0011] In some embodiments, it further includes a bracket detachably connected to the terminal seat, the bracket is provided with a plurality of support platforms, and the outer end of each of the conductive terminals overlaps with one of the support platforms.

[0012] In some embodiments, the cover plate is connected to the top of the terminal seat through the first boss, the bracket is connected to the bottom of the terminal seat, and the support platform overlaps with the lower side of the conductive terminal; or, the cover plate is connected to the bottom of the terminal seat through the second boss, the bracket is connected to the top of the terminal seat, and the support platform overlaps with the upper side of the outer end of the conductive terminal.

[0013] In some embodiments, a screw hole is provided in the support platform, and a connecting hole is provided at the outer end of the conductive terminal corresponding to the screw hole, and the hole diameter of the connecting hole is larger than the hole diameter of the screw hole.

[0014] On the other hand, the utility model provides a motor, including a motor housing, a stator and a rotor arranged in the motor housing, and a wiring port of any of the above items, wherein the inner end of the conductive terminal of the wiring port passes through the motor housing and is electrically connected to each phase winding of the stator.

[0015] In some embodiments, the motor housing includes a housing base, an end cover, and a ring portion sandwiched between the housing base and the end cover, and the terminal base of the wiring port is integrally connected to the ring portion.

[0016] In some embodiments, each phase winding includes a pin, and each of the pins abuts against an inner end of one of the conductive terminals in a radial direction.

[0017] In yet another aspect, the utility model provides a lawn mower, comprising any one of the above items and a load driven by the motor.

[0018] Compared with the prior art, the wiring port provided by the utility model is provided with a rotatable cover plate, which can be opened during wiring to facilitate the connection of the power phase line, and can be covered after the wiring is completed to block dust, gravel, rain, grass clippings, etc. in the external environment to avoid short circuits, open circuits, etc. The motor using the above wiring port and the lawn mower using the motor can operate safely and stably after the wiring is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 Schematic diagram of the structure of a motor according to an embodiment of the utility model.

[0021] Figure 2 for Figure 1 Exploded view of the motor shown.

[0022] Figure 3 for Figure 1 Axial section view of the motor shown.

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the connection components of the motor shown.

[0024] Figure 5 for Figure 4 Schematic diagram of the open state of the connection component shown.

[0025] Figure 6 for Figure 4 Further exploded view of the connected components shown.

[0026] Figure 7 for Figure 6 Another angled view of the cover plate of the connecting assembly is shown.

[0027] Figure 8 for Figure 4 A side view of the housing of the illustrated connection assembly.

[0028] Fig. 9 for Figure 4 A side view of the cover of the illustrated connection assembly.

[0029] Fig.10 FIG. 1 is a schematic structural diagram of a motor according to another embodiment of the utility model.

[0030] Fig.11 for Fig.10 Exploded view of the motor shown.

[0031] Fig.12 for Fig.10 Schematic diagram of the structure of the connection components of the motor shown.

[0032] Fig.13 for Fig.12 Schematic diagram of the open state of the connection component shown.

[0033] Fig.14 for Fig.13 A side view of the cover of the illustrated connection assembly.

[0034] Fig.15 for Fig.13 A side view of the housing of the illustrated connection assembly.

[0035] Fig.16 This is a physical diagram of a specific embodiment of the connection assembly of the utility model being connected to a power line.

[0036] Fig.17 This is a physical picture of a specific embodiment of the connection component of the utility model after being connected to a power line.

[0037] Description of Figure Numbers:

[0038] 10. Motor housing; 12. Housing seat; 14. End cover; 16. Ring; 18. Sealing ring;

[0039] 20. stator; 22. stator core; 24. stator winding; 26. pin;

[0040] 30. rotor; 32. rotating shaft; 34. rotor core;

[0041] 40, wiring port; 42, terminal block; 44, conductive terminal; 44a, inner end; 44b, outer end; 45, connection hole; 46, cover plate; 461, ear; 463, shaft hole; 465, wiring mark; 467, motor type mark; 48, bracket; 481, support platform; 482, nut; 483, screw hole; 49 / 49a / 49b, boss; 49

[0042] 50, phase line; 60, stud. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings exemplarily show one or more embodiments of the present invention so that the understanding of the technical solution disclosed in the present invention is more accurate and thorough. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments described below.

[0044] The same or similar numbers in the drawings of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B.

[0046] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0047] The present application relates to an electric motor, in particular to a three-phase electric motor. Figure 1-3 A specific embodiment of the motor of the present application is shown, and the motor includes a motor housing 10 , a stator 20 and a rotor 30 disposed in the motor housing 10 , and a connection port 40 .

[0048] The motor housing 10 includes a housing base 12 and an end cover 14. The housing base 12 is a cylindrical structure with one end open. The end cover 14 is connected to the open end of the housing base 12 by screws, etc., and the two together constitute a space for installing the stator 20 and the rotor 30. The stator 20 includes a stator core 22 and a stator winding 24 wound on the stator core 22. The stator winding 24 is preferably a three-phase winding, including three single-phase windings U, V, and W. The phases of the windings differ by 120 electrical degrees. Each phase winding includes a pin 26, and the pin 26 is electrically connected to the wiring port 40. The rotor 30 includes a rotating shaft 32, a rotor core 34 surrounding the rotating shaft 32, and a magnet mounted on the rotor core 34.

[0049] The three-phase AC power supply or DC power supply is converted into a three-phase power supply by a converter, and a phase line 50 is led out from each of the three phase ends of the cable (see Figure 16-17 ), the end 50 of each phase line is electrically connected to the corresponding phase winding 24 of the stator winding 24 through the connection port 40, completing the connection between the motor and the power supply.

[0050] Also refer to Figure 4-7 The connection port 40 includes a terminal base 42, a conductive terminal 44 fixed in the terminal base 42, and a cover plate 46 rotatably connected to the terminal base 42. By rotating the cover plate 46, the connection port 40 can have two different states: open and closed. In the open state, Figure 5 , Fig.16 As shown, the cover plate 46 is flipped outward relative to the terminal seat 42, so that the conductive terminals 44 in the terminal seat 42 are exposed, and the phase line 50 of the power supply can be easily connected to the corresponding conductive terminal 44; in the closed state, as shown Figure 4 , Fig.17 As shown, the cover plate 46 shields the conductive terminal 44 in the terminal seat 42 and the phase line 50 connected thereto, preventing dust, sand, rain, grass clippings, etc. in the external environment from affecting the safety and effectiveness of the electrical connection, and avoiding the occurrence of short circuits, open circuits, etc.

[0051] The conductive terminal 44 is generally in the shape of a long thin sheet, including an inner end 44a and an outer end 44b opposite to each other, wherein the inner end 44a extends into the motor housing 10 to connect with the pin 26 of the stator winding 24, and the outer end 44b extends out of the motor housing 10 to connect to the phase line 50 of the power supply.

[0052] Corresponding to the three-phase power supply, three conductive terminals 44 are arranged in the wiring port 40, and the inner ends 44a of the three conductive terminals 44 are bent in the motor housing 10 and extend along the axial direction of the motor. The three pins 26 of the stator winding 24 are arranged corresponding to the three conductive terminals 44, and are closely abutted with the inner ends 44a of the three conductive terminals 44 in the radial direction or electrically connected in other ways, so that the stator winding 24 is in contact with the conductive terminals 44. A connection hole 45 is provided at the outer end 44b of each conductive terminal 44, and a C-shaped card interface is formed at the end of each phase line 50 of the power supply. When wiring, the end of the phase line 50 is overlapped with the outer end 44b of the corresponding conductive terminal 44, and the fixing member, such as a bolt 60, is passed through the card interface and the connection hole 45 and connected to the terminal seat 42, and the end of the phase line 50 is crimped together with the outer end 44b of the conductive terminal 44, so that the power supply is in contact with the conductive terminal 44.

[0053] The terminal seat 42 can be made of insulating materials such as plastic. Preferably, the conductive terminal 44 is placed in a mold after molding, and the terminal seat 42 is molded by secondary injection molding (over molding), so that the middle part of the conductive terminal 44 is fixed in the terminal seat 42 as a whole, and the inner end 44a and the outer end 44b are exposed. In this embodiment, a bracket 48 is detachably connected to the terminal seat 42, and a plurality of hollow support platforms 481 are provided on the bracket 48, and each support platform 481 overlaps with the outer end 44b of one of the conductive terminals 44. A nut 482 is fixed in the support platform 481, and each nut 482 is provided with a screw hole 483 at the position corresponding to the connection hole 45 of the conductive terminal 44, and the hole diameter thereof is slightly smaller than the hole diameter of the connection hole 45. After the phase line 50 of the power supply is overlapped with the outer end 44b of the conductive terminal 44, the screw of the bolt 60 passes through the card interface of the phase line 50, the connecting hole 45 of the conductive terminal 44 and is screwed into the screw hole 483 of the support platform 481. The bolt head of the bolt 60 presses the end of the phase line 50 against the outer end 44b of the conductive terminal 44.

[0054] The bracket 48 can be made of insulating materials such as plastic, and after molding, it is connected to the terminal block 42 by screws, buckles, etc. In this embodiment, in the up and down direction, the conductive terminal 44 is roughly located in the middle of the terminal block 42, and the bracket 48 can be connected to the top or bottom of the terminal block 42. Figure 4-7 In the illustrated embodiment, the bracket 48 is connected to the top of the terminal base 42, and its support platform 481 overlaps with the upper surface of the outer end 44b of the conductive terminal 44. In other words, the conductive terminal 44 is located below the support platform 481. When connecting the phase line of the power supply, the end of the phase line is overlapped below the conductive terminal 44, and the screw passes through the phase line and the conductive terminal 44 from bottom to top and is connected to the support platform 481. Figure 12-15 In the illustrated embodiment, the bracket 48 is connected to the bottom of the terminal base 42, and its support platform 481 overlaps with the lower surface of the outer end 44b of the conductive terminal 44. In other words, the conductive terminal 44 is located above the support platform 481. When connecting the phase line of the power supply, the end of the phase line is overlapped above the conductive terminal 44, and the screw passes through the phase line and the conductive terminal 44 from top to bottom and is connected to the support platform 481.

[0055] When the support platform 481 is connected to different positions of the terminal base 42, the cover plate 46 is connected to different positions of the terminal base 42 accordingly. Figure 8 and Fig. 9, on the two lateral sides of the terminal block 42, there are respectively provided with protruding posts 49; on the two side edges of the cover plate 46, there are formed by bending and extending ear portions 461, and on the ear portions 461, there are provided shaft holes 463. During assembly, the protruding posts 49 of the terminal block 42 are pivotally connected within the shaft holes 463 of the cover plate 46, rotatably connecting the cover plate 46 to the terminal block 42. Preferably, on each side of the terminal block 42, there are provided two protruding posts 49, namely a first protruding post 49a and a second protruding post 49b, wherein the first protruding post 49a is close to the top of the terminal block 42 and the second protruding post 49b is close to the bottom of the terminal block 42. Figure 4-7 In the illustrated embodiment, the cover plate 46 is connected below the terminal block 42, and its shaft hole 463 is pivotally connected to the second protruding post 49b, blocking the bottom of the terminal block 42; Figure 12-15 In the illustrated embodiment, the cover plate 46 is connected above the terminal block 42, and its shaft hole 463 is pivotally connected to the first protruding post 49a, blocking the top of the terminal block 42.

[0056] Preferably, the diameters of the first protruding post 49a and the second protruding post 49b are different. In the illustration, the diameter D1 of the first protruding post 49a is smaller than the diameter D2 of the second protruding post 49b below, that is, D1 < D2. Figure 4-7 In the illustrated embodiment, the aperture diameter D3 of the shaft hole 463 of the cover plate 46 matches the second protruding post 49b; Figure 12-15 In the illustrated embodiment, the aperture diameter D4 of the shaft hole 463 of the cover plate 46 matches the first protruding post 49a. Since the diameters of the first protruding post 49a and the second protruding post 49b are different, Figure 4-7 the aperture diameter D3 of the illustrated cover plate 46 and Figure 12-15 the aperture diameter D4 of the illustrated cover plate 46 are different. Specifically, D4 < D3. The terminal block 42 is provided with two protruding posts 49a, 49b of different diameters, enabling the terminal block 42 to be used as a general component, adapting to different cover plates 46 installed from above or below, meeting the application requirements of different scenarios. The aperture diameters of the shaft holes 463 of various cover plates 46 are different, so that they can only be assembled to the top or bottom of the terminal block 42, which can prevent incorrect assembly of the cover plate 46 from affecting the use.

[0057] Preferably, the cover plate 46 is provided with a wiring identifier 465 corresponding to each conductive terminal 44, and the wiring identifiers 465 corresponding to the respective conductive terminals 44 are all different. For example, the cover plate 46 is respectively provided with three different wiring identifiers 465 of "U", "V", and "W" corresponding to three conductive terminals 44. Users can clarify the corresponding relationship between the three phase lines of the power supply and the 3 conductive terminals 44 according to the wiring identifier 465, so as to quickly and accurately connect the respective phase lines of the power supply to the corresponding conductive terminals 44 of the wiring port 40, preventing wiring errors from affecting the use and playing a role in preventing mistakes. Such as Figure 6-7As shown in FIGS. 13-14 , the cover plate 46 is provided with wiring marks 465 on both the inner and outer sides thereof, so that the user can directly see the wiring marks 465 regardless of whether the cover plate 46 is in a closed state or an open state.

[0058] Corresponding to the connection ports 40 of different structures, the motor may have different structures. Figure 1-2 As shown, the cover plate 46 of the wiring port 40 is connected to the bottom of the terminal seat 42 thereof, and the rotating shaft 32 of the rotor 30 passes through the end cover 14 of the motor housing 10 and extends upward to the outside of the motor housing 10 for connecting to a load placed above the motor. Figure 10-11 In the illustrated embodiment, the cover plate 46 of the wiring port 40 is connected to the top of the terminal seat 42 thereof, and the rotating shaft 32 of the rotor 30 passes through the housing seat 12 of the motor housing 10 and extends downward to the outside of the motor housing 10, for connecting the load placed under the motor. Preferably, the motor housing 10 further includes a ring portion 16 sandwiched between the housing seat 12 and the end cover 14, and the terminal seat 42 of the wiring port 40 and the ring portion 16 are an integral structure. Preferably, a sealing ring 18 is sandwiched between the ring portion 16 and the housing seat 12 and the end cover 14.

[0059] The present application also provides a lawn mower comprising the above motor, wherein: Figure 1-2 The motor shown can be used as a traction motor for a lawn mower, and its rotating shaft is connected to the wheels through a transmission mechanism or the like; Figure 10-11 The motor shown can be used as a cutting motor of a lawn mower, and its rotating shaft 32 is connected to the blade below. Preferably, a motor type identification 467 is also provided on the cover plate 46 of the motor connection port 40. Figure 7 As shown, the cover plate 46 is provided with a motor type identification 467 of "T" representing the traction motor; Fig.12 As shown, a motor type mark 467 of "C" representing a cutting motor is provided on the cover plate 46. Through the motor type mark 467 on the cover plate 46, the assembler can know the type of motor used in the wiring port 40, and then clearly understand the assembly position of the cover plate 46 and the terminal block 42 of the wiring port 40.

[0060] The wiring port 40 provided in the present application is provided with a cover plate 46 that can rotate relative to the terminal seat 42. When wiring, the cover plate 46 can be opened to facilitate the connection of the phase line of the power supply. After the wiring is completed, the cover plate 46 can be covered to block dust, gravel, rain, grass clippings, etc. in the external environment, avoid the occurrence of short circuits, open circuits, etc., and ensure the safety and stability of the power connection. In addition, the present application sets a wiring mark 465 and / or a motor type mark 467 on the cover plate 46, which is conducive to the assembler to determine the connection position of the phase line of the power supply and the installation position of the cover plate 46, avoiding assembly errors that affect the use of the product. The motor using the above-mentioned wiring port 40 and the lawn mower using the motor can operate safely and stably after completing the wiring. Of course, the motor of the present application is not limited to use in lawn mowers.

[0061] It should be noted that the above embodiments only express the preferred implementation of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several modifications and improvements can be made, such as combining different features in various embodiments, etc., which should all fall within the scope of protection of the present invention.

Claims

1. A wiring port, comprising a terminal block and a plurality of conductive terminals arranged in the terminal block, each conductive terminal comprising an inner end and an outer end, wherein the outer end is used to connect a phase line of a power supply, and the inner end is used to connect a phase motor winding corresponding to the phase line, characterized in that: The wiring port also includes a cover plate rotatably connected to the terminal seat, when the cover plate is opened relative to the terminal seat, the outer end of the conductive terminal is exposed; when the cover plate is covered with the terminal seat, the outer end of the conductive terminal is covered; the cover plate is provided with a wiring mark corresponding to each conductive terminal, and the wiring marks are different.

2. The connection port according to claim 1, characterized in that: Two opposite sides of the cover plate are each provided with a wiring mark corresponding to each conductive terminal.

3. The connection port according to claim 1, characterized in that: The power supply is a three-phase power supply, and the wiring identification of the cover plate includes three different wiring identifications: "U", "V", and "W".

4. The connection port according to claim 1, characterized in that: The cover plate is also provided with a motor type identification.

5. The connection port according to claim 1, characterized in that: The terminal seat is provided with a first convex column and a second convex column at the top and the bottom thereof respectively, and the cover plate is provided with an axial hole, and the axial hole is pivotally connected to the first convex column or the second convex column.

6. The connection port according to claim 5, characterized in that: The diameters of the first boss and the second boss are different, and the diameter of the shaft hole of the cover plate matches the diameter of one of the first boss and the second boss.

7. The connection port according to claim 6, characterized in that: It also includes a bracket detachably connected to the terminal seat, wherein the bracket is provided with a plurality of support platforms, and the outer end of each of the conductive terminals overlaps with one of the support platforms.

8. The connection port according to claim 7, characterized in that: The cover plate is connected to the top of the terminal seat through the first boss, the bracket is connected to the bottom of the terminal seat, and the support platform overlaps with the lower side of the conductive terminal; or, the cover plate is connected to the bottom of the terminal seat through the second boss, the bracket is connected to the top of the terminal seat, and the support platform overlaps with the upper side of the outer end of the conductive terminal.

9. The connection port according to claim 7, characterized in that: A screw hole is arranged in the support platform, and a connecting hole is arranged at the outer end of the conductive terminal corresponding to the screw hole, and the hole diameter of the connecting hole is larger than the hole diameter of the screw hole.

10. A motor, comprising a motor housing and a stator and a rotor arranged in the motor housing, characterized in that: It also includes the wiring port according to any one of claims 1 to 9, wherein the inner end of the conductive terminal of the wiring port passes through the motor housing and is electrically connected to each phase winding of the stator.

11. The motor according to claim 10, characterized in that The motor housing comprises a housing seat, an end cover and a ring portion sandwiched between the housing seat and the end cover, and the terminal seat of the wiring port is integrally connected with the ring portion.

12. The motor according to claim 10, characterized in that Each phase winding comprises a pin, and each pin abuts against the inner end of one of the conductive terminals in the radial direction.

13. A lawn mower, characterized in that: The invention comprises the motor according to any one of claims 10 to 12 and a load driven by the motor.

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