Motor and gardening tool

Abstract

The invention provides a motor and a gardening tool, the motor comprises a shell, a controller, a motor body and a connecting device, and a partition plate is arranged in the shell to divide the internal space of the shell into a first cavity and a second cavity; the controller is contained in the first cavity, and cooling liquid is arranged in the first cavity so as to cool the controller; the motor body is accommodated in the second cavity; the connecting device is electrically connected with the controller and the motor body. The cooling liquid is arranged in the first cavity, so that the controller can dissipate heat outwards through the cooling liquid, and the heat dissipation efficiency of the controller is improved; the controller and the motor body are connected through the connecting device, so that the connecting mode is simple and convenient.

Description

Technical Field

[0001] The invention relates to a motor and a gardening tool, belonging to the technical field of motors. Background Art

[0002] At present, in the brushless motor industry, the motor body and the controller are usually assembled into one body. With the size of the motor, the motor can be applied to smaller products, which improves the practicality of the motor. However, the motor body and the controller will generate a lot of heat during operation. The two are assembled into one body, so that the heat of the two is superimposed, causing the temperature of the motor body and the controller to rise sharply. The operation of the motor body and the controller at high temperature will shorten their service life. The traditional cooling method is mainly air cooling. When the power of the motor body and the controller is large, the heat dissipation efficiency of air cooling is low, which makes the motor body and the controller unable to be used for a long time at high power.

[0003] In view of this, it is indeed necessary to propose a motor to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a motor and a gardening tool to solve the problem of low heat dissipation efficiency of a motor body and a controller in the prior art.

[0005] To achieve the above object, the present invention provides a motor, comprising:

[0006] A shell body having a partition plate therein to divide the internal space of the shell body into a first cavity and a second cavity;

[0007] A controller is housed in the first cavity, wherein a cooling liquid is provided in the first cavity to cool the controller;

[0008] A motor body is housed in the second cavity;

[0009] A connecting device electrically connects the controller and the motor body.

[0010] As a further improvement of the present invention, the controller is fixedly connected to the partition plate, the first cavity is filled with coolant, and the heat of the controller and the partition plate is conducted to the surface of the shell through the coolant to dissipate heat.

[0011] As a further improvement of the present invention, a locking column extending toward the first cavity is provided on the partition plate, the motor includes a fixing piece, and the controller is fixedly connected to the locking column via the fixing piece.

[0012] As a further improvement of the present invention, a connecting hole is provided on the partition plate, and the connecting device includes a connecting member and a sealing member. The connecting member is accommodated in the connecting hole, and the two ends of the connecting member are electrically connected to the motor body and the controller respectively, and the sealing member is provided between the connecting member and the partition plate.

[0013] As a further improvement of the present invention, the connecting device includes a conductive member, a conductive hole is provided on the connecting member, the conductive member is accommodated in the conductive hole, and two ends of the conductive member are electrically connected to the controller and the motor body respectively.

[0014] As a further improvement of the present invention, the conductive member and the connecting member are integrally formed, and three conductive members are provided and evenly distributed on the connecting member.

[0015] As a further improvement of the present invention, one end of the conductive member is fixedly connected to the controller, the motor body includes a wiring terminal, and the other end of the conductive member is connected to the motor body through the wiring terminal.

[0016] As a further improvement of the present invention, the connecting member is provided with a fixing portion and a fixing hole opened on the fixing portion, the partition plate is provided with a slot hole, the slot hole corresponds to the fixing hole, the motor includes a fixing member, the fixing member passes through the fixing hole and is accommodated in the slot hole to connect the connecting member and the partition plate.

[0017] As a further improvement of the present invention, the fixing portion extends outward from the outer peripheral edge of the connecting member, three fixing portions are provided and are evenly distributed on the outer edge of the connecting member, and three slots are correspondingly provided, and the slots are blind holes.

[0018] To achieve the above object, the present invention further provides a garden tool, which is equipped with a motor, and the motor comprises:

[0019] A shell body having a partition plate therein to divide the internal space of the shell body into a first cavity and a second cavity;

[0020] A controller is housed in the first cavity, wherein a cooling liquid is provided in the first cavity to cool the controller;

[0021] A motor body is housed in the second cavity;

[0022] A connecting device electrically connects the controller and the motor body.

[0023] The beneficial effects of the present invention are as follows: the motor of the present invention arranges coolant in the first cavity, so that the controller can dissipate heat outwards through the coolant, thereby improving the heat dissipation efficiency of the controller; the controller and the motor body are connected by a connecting device, making the connection method simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of a motor according to a preferred embodiment of the present invention.

[0025] Figure 2 yes Figure 1 Exploded view of the motor.

[0026] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0027] Figure 4 yes Figure 2 A three-dimensional schematic diagram of the middle shell.

[0028] Figure 5 yes Figure 1 Another exploded view of the motor.

[0029] Figure 6 yes Figure 5 A partial enlarged view of part B.

[0030] Figure 7 yes Figure 5 A partial enlarged view of part C.

[0031] Figure 8 yes Figure 1 Cross-section of the motor.

[0032] Fig. 9 yes Figure 8 A partial enlarged view of part D.

[0033] Explanation of the accompanying drawings: motor 100, housing 1, first cavity 11, first cover plate 12, second cavity 13, second cover plate 14, partition plate 15, slot 151, connecting hole 152, locking column 153, locking hole 154, positioning column 155, threading hole 16, connecting device 2, connecting member 21, conductive hole 211, fixing portion 212, fixing hole 213, limiting portion 214, conductive member 22, first wiring hole 221, second wiring hole 222, sealing member 23, controller 3, first wire hole 31, motor body 4, terminal 41, second wire hole 42, stator 43, rotor 44, fixing member 5, cable 6. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The present invention discloses a garden tool for trimming vegetation in a garden. The garden tool includes but is not limited to a garden riding lawn mower, a garden standing lawn mower, a push mower, a handheld lawn mower, an electric saw, a cleaning machine, etc.

[0036] See also Figure 1 , Figure 2 and Figure 5 As shown, a motor 100 is provided in the garden tool for driving the garden tool to perform operations. The motor 100 includes a shell 1, a controller 3, a motor body 4 and a connecting device 2, wherein a partition plate 15 is provided in the shell 1 to divide the internal space of the shell 1 into a first cavity 11 and a second cavity 13; a coolant (not shown) is provided in the first cavity 11, and the controller 3 is accommodated in the first cavity 11, and the controller 3 is cooled by the coolant to improve the cooling effect of the controller 3; the motor body 4 is accommodated in the second cavity 13, one end of the connecting device 2 is connected to the controller 3, and the other end is connected to the motor body 4, and the controller 3 can be electrically connected to the motor body 4 through the connecting device 2 to control the start or stop of the motor body 4.

[0037] Specifically, the partition plate 15 is integrally formed with the shell 1, which improves the connection strength between the partition plate 15 and the shell 1. At the same time, the first cavity 11 and the second cavity 13 are separated by the partition plate 15 to avoid the first cavity 11 and the second cavity 13 being connected at the partition plate 15. Such a configuration prevents the coolant in the first cavity 11 from flowing into the second cavity 13. On the one hand, the heat dissipation effect of the controller 3 is improved, and on the other hand, the coolant is prevented from hindering the rotation of the motor body 4 and causing damage.

[0038] Since the controller 3 is completely immersed in the coolant, the heat generated by the controller 3 is directly transferred to the coolant. The heat is transferred to the shell 1 through the alternating flow of hot and cold coolants. The heat is then transferred to the external environment through the shell 1. The coolant mainly transfers the heat of the controller 3. At the same time, since one side of the partition plate 15 is in contact with the motor body 4, the heat generated by the motor body 4 can be transferred to the side of the partition plate 15 close to the first cavity 11 and contact the coolant. The heat on the partition plate 15 is transferred to the shell 1 through the coolant to dissipate the heat of the motor body 4. In other words, the coolant in this embodiment can dissipate heat for both the controller 3 and the motor body 4. Since the coolant has a high thermal conductivity, it can improve the heat dissipation effect, so that both the motor body 4 and the controller 3 can continue to operate at high power.

[0039] The shell 1 includes a first cover plate 12, a second cover plate 14 and a sealing ring (not shown), wherein the first cover plate 12 and the second cover plate 14 are respectively arranged at two ends of the shell 1, the first cover plate 12 is connected to the shell 1 to seal the controller 3 in the first cavity 11, the second cover plate 14 is connected to the shell 1 to confine the motor body 4 in the second cavity 13, the first cover plate 12 and the shell 1 as well as the second cover plate 14 and the shell 1 are fastened by screws, and the sealing ring is arranged between the first cover plate 12 and the shell 1, and the sealing ring is squeezed by the first cover plate 12 and the shell 1 and deformed to seal the first cavity 11. By providing a first cover plate 12 and a sealing ring sealed with the housing 1, the controller 3 can be installed in the first cavity 11, and the controller 3 and the coolant can be sealed in the first cavity 11 by the first cover plate 12. In this way, when the controller 3 is damaged or the coolant is deteriorated, the first cover plate 12 can be opened to replace or repair the controller 3 or the coolant, thereby further extending the service life of the motor 100.

[0040] The controller 3 is fixedly connected to the partition plate 15, and the coolant fills the first cavity 11. The heat of the controller 3 and the partition plate 15 is transferred to the surface of the shell 1 through the coolant to dissipate heat. Specifically, the coolant is heated in the first cavity 11 and cross-flow of hot and cold occurs to transfer the heat at the controller 3 and the partition plate 15 to the shell 1. The coolant fills the first cavity 11 and will not flow out of the first cavity 11 to the outside of the shell 1 or flow into the first cavity 11 from the outside of the shell 1, thereby improving the sealing of the first cavity 11 and simplifying the structure of the motor 100. Preferably, the coolant has an insulating property to prevent different electronic components on the controller 3 from conducting electricity through the coolant, causing damage to the controller 3.

[0041] In this embodiment, the coolant is contained in the first cavity 11 and does not circulate with the external device to improve the sealing of the first cavity 11 and simplify the structure of the motor 100. Of course, in other embodiments, a circulation structure can also be set on the outside of the shell 1 to allow the coolant in the first cavity 11 to circulate to improve the cooling efficiency. The specific structure and connection method of the circulation structure can be designed according to the existing technology and are not limited here.

[0042] See also Figures 2 to 4 As shown, the partition plate 15 is provided with a locking column 153 extending toward the first cavity 11, the motor 100 includes a fixing member 5, and the controller 3 is fixedly connected to the locking column 153 through the fixing member 5. Specifically, the locking column 153 is cylindrical, and a locking hole 154 is provided on the locking column 153. A corresponding hole is provided on the controller 3, so that the fixing member 5 can pass through the controller 3 and be received in the locking hole 154, so as to fix the controller 3 on the locking column 153. Preferably, the fixing member 5 is a screw, and the locking hole 154 is a screw hole.

[0043] The locking holes 154 are not provided on some locking columns 153 , but positioning columns 155 are provided on the locking columns 153 . When the controller 3 is assembled with the partition plate 15 , the positioning columns 155 extend into the holes provided on the controller 3 to position the controller 3 , thereby improving the assembly accuracy of the controller 3 and the partition plate 15 .

[0044] See also Figures 3 to 6 Combined with Figure 8 and Fig. 9 As shown, a connecting hole 152 is provided on the partition plate 15, and the connecting device 2 includes a connecting member 21 and a sealing member 23. The connecting member 21 is received in the connecting hole 152, and the two ends of the connecting member 21 are electrically connected to the motor body 4 and the controller 3 respectively, and the sealing member 23 is provided between the connecting member 21 and the partition plate 15. Specifically, the connecting member 21 is received in the connecting hole 152, and the two ends of the connecting member 21 are respectively received in the first cavity 11 and the second cavity 13, wherein a limiting portion 214 is provided at one end of the connecting member 21, and the limiting portion 214 protrudes from the connecting member 21 toward the surroundings and can cover the connecting hole 152, and the sealing member 23 is sleeved on the connecting member 21 and placed between the limiting portion 214 and the partition plate 15 to seal the connecting hole 152 and prevent the coolant in the first cavity 11 from flowing to the second cavity 13. Preferably, the limiting portion 214 is disposed in the first cavity 11, and the sealing member 23 is also disposed in the first cavity 11. Of course, in other embodiments, the limiting portion 214 and the sealing member 23 may also be disposed in the second cavity 13, as long as the purpose of sealing the connecting hole 152 can be achieved, and no limitation is made here.

[0045] The connection device 2 also includes a conductive member 22. A conductive hole 211 is provided on the connection member 21. The conductive member 22 is received in the conductive hole 211, and the two ends of the conductive member 22 are respectively electrically connected to the controller 3 and the motor body 4. Specifically, the conductive member 22 is arranged in a long strip shape, and the two ends of the conductive member 22 extend from the conductive hole 211 to be respectively electrically connected to the controller 3 and the motor body 4, so that the controller 3 can supply power to the motor body 4 to control the start and stop of the motor body 4, and can also control the speed of the motor body 4. The shape and size of the conductive hole 211 are the same as those of the conductive member 22, so that the conductive member 22 is received in the conductive hole 211 and the conductive hole 211 is sealed to prevent the coolant in the first cavity 11 from flowing to the second cavity 13.

[0046] In this embodiment, the conductive part 22 is a metal product, the connecting part 21 is a plastic product, and the conductive part 22 and the connecting part 21 are integrally formed, that is, when the connecting part 21 is produced, the conductive part 22 is directly injection molded into the connecting part 21 to achieve sealing between the conductive part 22 and the connecting part 21. Of course, in other embodiments, the conductive part 22 can be installed on the connecting part 21 through the conductive hole 211. At this time, a sealing structure is provided between the conductive part 22 and the connecting part 21; the conductive part 22 and the connecting part 21 can also be connected by a sealant; the conductive part 22 can also be not provided, and the connecting part 21 is made of metal material, which can also achieve electrical connection between the controller 3 and the motor body 4, and there is no restriction here.

[0047] Preferably, three conductive members 22 are provided and arranged in a cylindrical shape to correspond to the three wires of the three-phase alternating current respectively, and three conductive holes 211 are correspondingly provided, and the conductive holes 211 are evenly distributed on the connecting member 21 to avoid breakdown between the three-phase alternating current. Of course, in other embodiments, when the motor body 4 uses direct current, one or two conductive members 22 can also be provided, and the positive and negative currents are transmitted through the conductive member 22, or only the positive current is transmitted, and a grounding wire is set on the motor body 4 to transmit the negative current, which is not limited here.

[0048] See also Figure 3 , Figure 6 , Figure 7 Combined with Figure 8 and Fig. 9 As shown, one end of the conductive member 22 is fixedly connected to the controller 3, and the motor body 4 includes a terminal 41, and the other end of the conductive member 22 is connected to the motor body 4 through the terminal 41. Specifically, one end of the conductive member 22 provided in the first cavity 11 can abut against the controller 3, so that the controller 3 is electrically connected to the conductive member 22 to supply power to the conductive member 22. Specifically, the motor body 4 includes a stator 43 and a rotor 44, the rotor 44 is accommodated in the stator 43, and the terminal 41 is electrically connected to the stator 43, so that the controller 3 can supply power to the stator 43 through the terminal 41, thereby driving the rotor 44 to rotate and output power to the outside.

[0049] In this embodiment, the conductive member 22 is provided with a first wiring hole 221 at one end of the first cavity 11, and a first wire hole 31 is correspondingly provided on the controller 3. The motor 100 includes a fixing member 5, which passes through the first wire hole 31 and is accommodated in the first wiring hole 221 to fix the conductive member 22 and the controller 3 so that the controller 3 can supply power to the conductive member 22. Of course, in other embodiments, the conductive member 22 and the controller 3 can be directly welded so that the controller 3 can supply power to the conductive member 22. There is no limitation here.

[0050] A second wiring hole 222 is provided at one end of the conductive member 22 disposed in the second cavity 13. One end of the terminal block 41 is connected to the coil in the stator 43, and a second wire hole 42 is provided on the other end. The fixing member 5 passes through the second wire hole 42 and is received in the second wiring hole 222, so that the terminal block 41 is installed on the conductive member 22, so as to realize electrical connection between the conductive member 22 and the terminal block 41, and then electrically connect with the stator 43, so as to realize that the controller 3 supplies power to the stator 43, and then drives the rotor 44 to rotate. Of course, in other embodiments, the conductive member 22 can also be welded to the terminal block 41, which is not limited here.

[0051] See also Figure 3 and Figure 4 As shown, the connecting member 21 is provided with a fixing portion 212 and a fixing hole 213 provided on the fixing portion 212, and the partition plate 15 is provided with a slot 151, the slot 151 corresponds to the fixing hole 213, and the fixing member 5 passes through the fixing hole 213 and is accommodated in the slot 151 to connect the connecting member 21 and the partition plate 15. Among them, the fixing portion 212 extends outward from the outer peripheral edge of the connecting member 21, and three fixing portions 212 are provided and evenly distributed on the outer edge of the connecting member 21, and three slots 151 are provided correspondingly, and the slots 151 are blind holes. Specifically, the slot 151 is provided on the side of the partition plate 15 facing the first cavity 11, the fixing portion 212 extends outward from the limiting portion 214, and the fixing hole 213 is provided in the middle position of the fixing portion 212. Preferably, the fixing member 5 is a screw, and the slot 151 is provided with a thread engaged with the screw.

[0052] In this embodiment, the slot 151 is arranged on the side of the partition plate 15 facing the first cavity 11, the fixing hole 213 is arranged on the fixing portion 212, and the fixing portion 212 and the fixing hole 213 are both provided with three. Of course, in other embodiments, the slot 151 can be arranged on the side of the partition plate 15 facing the second cavity 13, the fixing hole 213 can be arranged on the limiting portion 214, and the number of the fixing holes 213 can be set to two, five or other numbers. The number of the slot 151 corresponds to the fixing holes 213, and there is no limitation here.

[0053] See also Figure 2 As shown, the shell 1 is also provided with a threading hole 16, and the motor 100 includes a cable 6 and a sealing strip (not shown). The cable 6 passes through the threading hole 16 to be electrically connected to the controller 3 to supply power to the controller 3. The threading hole 16 is provided on the side wall of the shell 1, and the sealing strip is provided between the cable 6 and the shell 1 to achieve a sealed connection between the cable 6 and the shell 1. Of course, the threading hole 16 can also be provided on the first cover plate 12, and the cable 6 passes through the first cover plate 12 to supply power to the controller 3, which is not limited here.

[0054] In summary, the motor 100 of the present invention reduces the space occupied by the motor body 4 and the controller 3 by accommodating the controller 3 in the first cavity 11 and the motor body 4 in the second cavity 13, so that the motor 100 can be applied to products with smaller sizes; by arranging a coolant in the first cavity 11, the controller 3 dissipates heat outwards through the coolant, thereby improving the heat dissipation efficiency of the controller 3; the controller 3 and the motor body 4 are connected by the connecting device 2, so that the connection method is simple and convenient; by arranging a sealing member 23 between the connecting member 21 and the partition plate 15, the connecting member 21 and the partition plate 15 are sealed and connected, thereby preventing the coolant in the first cavity 11 from flowing to the second cavity 13; by arranging a conductive member 22 on the connecting member 21, the controller 3 is electrically connected to the motor body 4, and the current of the motor body 4 is controlled by the controller 3, thereby realizing that the controller 3 controls the start, stop or speed of the motor body 4.

[0055] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A motor, characterized in that: include: A shell body having a partition plate therein to divide the internal space of the shell body into a first cavity and a second cavity; A controller is housed in the first cavity, wherein a cooling liquid is provided in the first cavity to cool the controller; A motor body is housed in the second cavity; A connecting device electrically connects the controller and the motor body.

2. The motor according to claim 1, characterized in that: The controller is fixedly connected to the partition plate, the first cavity is filled with cooling liquid, and the heat of the controller and the partition plate is conducted to the surface of the shell through the cooling liquid to dissipate heat.

3. The motor according to claim 2, characterized in that: The partition plate is provided with a locking column extending toward the first cavity, the motor includes a fixing piece, and the controller is fixedly connected to the locking column via the fixing piece.

4. The motor according to claim 1, characterized in that: The partition plate is provided with a connecting hole, and the connecting device includes a connecting member and a sealing member. The connecting member is received in the connecting hole, and two ends of the connecting member are electrically connected to the motor body and the controller respectively, and the sealing member is provided between the connecting member and the partition plate.

5. The motor according to claim 4, characterized in that: The connecting device comprises a conductive member, a conductive hole is provided on the connecting member, the conductive member is received in the conductive hole, and two ends of the conductive member are electrically connected to the controller and the motor body respectively.

6. The motor according to claim 5, characterized in that: The conductive member and the connecting member are integrally formed, and three conductive members are provided and evenly distributed on the connecting member.

7. The motor according to claim 5, characterized in that: One end of the conductive member is fixedly connected to the controller, the motor body comprises a wiring terminal, and the other end of the conductive member is connected to the motor body through the wiring terminal.

8. The motor according to claim 4, characterized in that: The connecting member is provided with a fixing portion and a fixing hole opened on the fixing portion, the partition plate is provided with a slotted hole corresponding to the fixing hole, the motor includes a fixing member, the fixing member passes through the fixing hole and is accommodated in the slotted hole to connect the connecting member and the partition plate.

9. The motor according to claim 8, characterized in that: The fixing portion extends outward from the outer peripheral edge of the connecting member, three fixing portions are provided and are evenly distributed on the outer edge of the connecting member, and three slots are correspondingly provided, and the slots are blind holes.

10. A garden tool, characterized in that: A motor is provided inside, and the motor comprises: A shell body having a partition plate therein to divide the internal space of the shell body into a first cavity and a second cavity; A controller is housed in the first cavity, wherein a cooling liquid is provided in the first cavity to cool the controller; A motor body is housed in the second cavity; A connecting device electrically connects the controller and the motor body.

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