Walking motor controller for mower

Abstract

The utility model discloses a walking motor controller for a mower, which comprises a heat dissipation bottom plate, and a PCB (printed circuit board) is mounted on the plate surface of the heat dissipation bottom plate; the mowing device further comprises a plurality of first PCB connectors, the first PCB connectors are fixed to the plate face of the heat dissipation bottom plate and connected with any end of the PCB, each first PCB connector is provided with at least one first interface, and the first interfaces are communicated with the PCB to form a channel for electrically connecting the PCB and the mowing device. According to the utility model, the plurality of first PCB connectors and the plurality of first interfaces are designed, so that the load pressure of a single first interface is reduced, and the plurality of second PCB connectors are designed to electrically connect devices with different functions in the mower to the same PCB panel, so that the circuit is simplified, and the maintenance is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lawn mower, especially a walking motor controller for lawn mower. BACKGROUND

[0002] The walking motor controller is an electronic device that manages, controls and protects power supply as the main function. In the lawn mower, the main function of the walking motor controller is to manage and optimize the use of electric energy, to ensure that the motor and other electronic components of the lawn mower can work efficiently and safely.

[0003] The motor of the lawn mower needs a large current when starting. The walking motor controller can adjust the starting current, reduce the impact on the motor and battery, and prolong the service life of the motor and battery. At the same time, the walking motor controller can also detect the charging state, voltage and temperature of the battery, to ensure that the battery works in the best state, avoid overcharge and overdischarge. Some lawn mowers are also equipped with adjustable blade speed function, which uses the walking motor controller to adjust the working speed of the motor to adapt to different mowing needs. When the lawn mower encounters obstacles or too much weeds, the motor load will suddenly increase. The walking motor controller can detect this change and quickly cut off the power supply to prevent the motor from being damaged.

[0004] In the prior art, the walking motor controller of the lawn mower does not need to have a high total input current when it successfully completes the mowing task. However, with the development of technology, people have higher demands on the mowing efficiency of the lawn mower, the application scenarios of the lawn mower, etc., which stimulates the market to produce lawn mowers with stronger cutting ability, larger cutting width, faster working speed and better climbing ability. Therefore, it is necessary to increase the total input current of the original walking motor controller. However, in the design of the previous walking motor controller, only one PCB connector is designed, and multiple interfaces are designed in the same PCB connector, so that the PCB connector needs to load all the input current. When more functions of the lawn mower need to be met, it will cause serious heating. Moreover, the PCB connector is designed to be wrapped in the dust cover, and only the interface is exposed. This structure makes it difficult for the PCB board and the PCB connector to dissipate heat and difficult to maintain. At the same time, in the prior art, devices with different functions in the lawn mower are often designed separately to control one PCB board. When the lawn mower develops more functional components, the number of PCB boards in the lawn mower increases, which leads to a messy line in the lawn mower, making it difficult to troubleshoot and maintain. Therefore, a solution is needed to solve the above problems. SUMMARY

[0005] In response to the problems mentioned in the above-mentioned technology that the increase in the total input current of the lawn mower travel motor controller may cause overload of the power cord and connector, thereby causing a fire, and the independent design of the electrical connection components of the engine, lifting push rod, and lighting device may lead to messy wiring and difficulty in maintenance, the utility model provides a travel motor controller for a lawn mower, including a heat dissipation base plate, on the surface of which a PCB board is mounted; and also including a plurality of first PCB connectors, each of which is fixed to the surface of the heat dissipation base plate and connected to any end of the PCB board, and each of which is provided with at least one first interface, which is connected to the PCB board to form a channel for electrically connecting the PCB board to the travel motor of the lawn mower.

[0006] As a further improvement of the present invention, a plurality of the first PCB connectors are provided with a raised fixing block on one side away from the heat dissipation base plate, and a fixing knob is provided on the one side away from the heat dissipation base plate. The fixing knob is provided with a rotating end and a fixed end, and the fixed end passes through the fixing block and is connected to a channel for electrical connection with the PCB board.

[0007] As a further improvement of the present invention, a side of the fixing block close to the PCB board is configured as an inclined surface, and the inclined surface and a side of the first PCB connector close to the fixing block form a placement platform.

[0008] As a further improvement of the present invention, a plurality of raised positioning blocks are provided at both ends of the PCB board, and the first PCB connector is fixed on both sides of the positioning blocks so that a gap is provided between any two first PCB connectors at any end of the PCB board.

[0009] As a further improvement of the present invention, it further includes several second PCB connectors, which are all fixed on the board surface of the PCB board away from the heat dissipation base plate, and each of the second PCB connectors is provided with at least one second interface, which is connected to the PCB board to form a channel for electrically connecting the PCB board and the functional device.

[0010] As a further improvement of the present invention, it also includes a base, one side of the base is configured as an inwardly concave groove, the groove is adaptively connected to the heat dissipation base plate, and a gap is left between the bottom surface of the groove and the heat dissipation base plate to form a heat dissipation cavity.

[0011] As a further improvement of the present invention, a plurality of heat sinks are installed on a side of the base away from the trough body.

[0012] As a further improvement of the present invention, it also includes a dust cover, which is provided with a shielding portion and a fixing portion. The shielding portion is adaptively connected to the placement table, and the fixing portion is detachably connected to a side of the heat dissipation base plate on which the PCB board is installed. The dust cover is also provided with a plurality of windows for exposing the first PCB connector.

[0013] As a further improvement of the present invention, the dust cover is designed to be an aluminum heat dissipation material.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a lawn mowing travel motor controller designed with multiple first PCB connectors, which receive the total input current through multiple interfaces of the multiple first PCB connectors. This structure helps reduce the load pressure of a single interface and can avoid malfunctions caused by increased heat generated in the power cord and connector when the total input current is increased. At the same time, multiple second PCB connectors are also provided. Devices with different functions in the lawn mower are electrically connected to the same PCB board through the multiple second PCB connectors, making the arrangement of wires neater and simpler and making maintenance more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall diagram of the utility model.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 It is a partial structural diagram of the utility model.

[0018] Figure 4 It is a top view of part of the structure of the utility model.

[0019] The main component symbols are described as follows:

[0020] 1. Heat dissipation base plate; 2. PCB board; 3. First PCB connector; 4. First interface; 5. Fixing knob; 6. Base; 7. Heat dissipation cavity; 8. Heat sink; 9. Dust cover; 10. Window; 11. Fixing block; 12. Positioning block; 13. Inclined surface; 14. Placement table; 15. Second PCB connector; 16. Second interface. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0022] In the following description, example details are provided to provide a deeper understanding of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. It should be understood that the specific embodiments described are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0023] It should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the existence of features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or their combinations.

[0024] See also Figures 1 to 4 The utility model provides a travel motor controller for a lawn mower, comprising a heat dissipation base plate 1, on which a PCB board 2 is mounted; and a plurality of first PCB connectors 3, each of which is fixed to the surface of the heat dissipation base plate 1 and connected to any end of the PCB board 2. The plurality of first PCB connectors 3 are provided with at least one first interface 4, which is in communication with the PCB board 2 to form a channel for electrically connecting the PCB board 2 to the lawn mower.

[0025] In order to support the lawn mower with better performance, the walking motor controller has a multi-layer PCB board installed on the heat dissipation base plate 1 of the walking motor controller. At the same time, four first PCB connectors 3 electrically connected to the multi-layer PCB board are provided. More specifically, the four first PCB connectors 3 include two PCB board input connectors and two PCB board output connectors. The two PCB board input connectors and the two PCB board output connectors are respectively connected to the two ends of the multi-layer PCB board. Any PCB board input connector is provided with two input interfaces, and any PCB board output connector is also provided with two output interfaces. The two first interfaces 4 of the PCB input connector are respectively connected to the positive pole of the DC 24V input battery and the negative pole of the DC 24V input battery, and the two first interfaces 4 of the PCB output connector are respectively connected to the positive pole of the 24V brush motor and the negative pole of the 24V brush motor.

[0026] The travel motor controller receives external power through the input interface of the PCB board input connector. Usually, a circuit breaker and filter are also set in the PCB board input connector to provide preliminary protection for the travel motor controller. The travel motor controller of the lawn mower is equipped with multiple input interfaces to disperse the total current to multiple input lines, thereby reducing the current load on each line and reducing the heat generation of the line. The travel motor controller of the lawn mower is equipped with multiple output interfaces to enable the travel motor controller to distribute current more evenly to each motor or functional module, thereby reducing the load pressure of a single interface and extending the life of the system. But more importantly, the travel motor controller is equipped with multiple input interfaces to support the travel motor controller with a higher total input power, meet more functions of the lawn mower and improve the working performance of the lawn mower.

[0027] See also Figure 3 and Figure 4 In the present invention, several first PCB connectors 3 are provided with raised fixing blocks 11 on the side facing away from the heat sink base 1. A fixing knob 5 is also provided on the side facing away from the heat sink base 1. The fixing knob 5 has a rotating end and a fixed end. The fixed end extends through the fixing block 11 and connects to the channel for electrical connection with the PCB board 2. By rotating the rotating end of the fixing knob 5, the fixed end of the fixing knob 5 reaches the electrical connection channel formed by the interface 4 and the PCB board 2, thereby contacting the wires in the electrical connection channel, thereby securing the wires there and preventing them from being shaken off by the prolonged vibration of the lawn mower during operation.

[0028] See also Figure 2 and Figure 3In order to enable the PCB board 2 to better dissipate heat and thus prevent excessive temperature from affecting performance, in the utility model, a plurality of raised positioning blocks 12 are further provided at both ends of the PCB board 2, and the first PCB connectors 3 are fixed on both sides of the positioning blocks 12 so that a gap is provided between any two first PCB connectors 3 at any end of the PCB board 2; and the utility model also includes a base 6, which is configured as a groove body formed by an inward depression. The groove body is adaptively connected to the heat dissipation base plate 1, and a gap is left between the bottom surface of the groove body and the heat dissipation base plate 1 to form a heat dissipation cavity 7. Continuously inputting high power to the PCB board 2 generates heat. If this heat is not dissipated in a timely manner, it will affect the overall operating performance of the lawn mower. In a single first PCB connector 3, the first PCB connector 3 has a large load and the heat dissipation is not ideal. However, providing multiple first PCB connectors 3 and separating the multiple first PCB connectors 3 can reduce the load pressure of the first PCB connector 3 on the one hand, and increase the heat dissipation area of ​​the first PCB connector 3 on the other hand, which can achieve the function of accelerating heat dissipation. At the same time, a groove is provided in the base 6 under the heat dissipation base plate 1 to form a heat dissipation cavity 7, which further heats the PCB board 2 to prevent the PCB board 2 and the first PCB connector 3 from overheating and causing malfunctions.

[0029] Furthermore, it also includes a heat sink 8, which is installed on a side of the base 6 away from the tank body. The heat sink 8 and the heat dissipation cavity 7 are respectively located on two opposite sides of the bottom of the tank body. The heat generated by the PCB board 2 and the first PCB connector 3 is transferred to the heat dissipation cavity 7 of the base 6 through the heat dissipation base plate 1. The heat of the heat dissipation cavity 7 is then transferred to the heat sink 8 through the bottom of the tank body. Finally, the heat sink 8 transfers the heat to the external environment to achieve cooling.

[0030] See also Figure 3 and Figure 4To simplify the layout of the various functional devices in the lawn mower, reduce the number of separate PCBs, and minimize cabling complexity, the present invention further includes several second PCB connectors 15. These second PCB connectors 15 are fixed to the surface of the PCB board 2, away from the heat sink 1. Each of these second PCB connectors 15 is provided with at least one second interface 16, which communicates with the PCB board 2 to form a pathway for electrical connection between the PCB board 2 and the functional devices. More specifically, three second PCB connectors 15 are provided, two of which are each provided with four second interfaces 16, and are connected to the engine and the lift push rod assembly, respectively. The remaining second PCB connector 15 is provided with five second interfaces 16, and is connected to the lighting assembly. By integrating the engine, lift push rod assembly, and lighting assembly onto a single PCB board 2, the travel motor controller's integrated design not only reduces the number of PCBs in the lawn mower and the overall design complexity, but also reduces the length and complexity of cabling, facilitating troubleshooting and repair by technicians and mitigating the risk of electromagnetic interference.

[0031] See also Figure 2 In order to prevent dust and the like from entering the PCB board 2 and thus affecting the electrical performance of the PCB board 2, in the present invention, a side of the fixing block close to the PCB board is provided with an inclined surface 13, and the inclined surface 13 and a side of the first PCB connector 3 close to the fixing block 11 form a placement platform 14; the utility model also includes a dust cover 9, which is provided with a shielding portion and a fixing portion. The shielding portion is connected to the placement platform, and the fixing portion is detachably connected to the side of the heat dissipation base plate 1 on which the PCB board 2 is mounted. The dust cover 9 is also provided with a plurality of windows 10 for exposing the first PCB connector 3. The shielding portion of the dust cover 9 is adapted and installed on a placement platform 14 formed by the fixing block 11 and the first PCB connector 3, and then the fixing portion of the dust cover 9 is detachably connected to the heat dissipation base plate 1 to provide dust protection for the PCB board 2 and ensure the normal operation of the PCB board 2. Therefore, a dust cover 9 is required to prevent dust from entering the PCB board 2. However, the complete covering of the PCB board 2 by the dust cover 9 makes it difficult for the heat inside the PCB board 2 to dissipate, which to a certain extent affects the heat dissipation of the PCB board 2. Therefore, the dust cover 9 is configured as a heat dissipation cover and is made of aluminum material that is easy to dissipate heat. At the same time, because the PCB board 2 needs to be connected to an external power supply and an external load through the first PCB connector 3, the dust cover 9 is provided with a window 10 to expose the first PCB connector 3.

[0032] The advantages of this utility model are:

[0033] 1. The present invention reduces the load pressure of a single first interface by providing multiple first PCB connectors and multiple first interfaces on the multiple first PCB connectors, thereby solving the problem of circuit and connector failure due to excessive load.

[0034] 2. The present invention connects devices with different functions in the lawn mower by designing multiple second PCB connectors and providing multiple second interfaces on the multiple second PCB connectors. This integrated design reduces the number of PCB boards required in the lawn mower, reduces the length and complexity of the cables, and facilitates troubleshooting and maintenance by technicians.

[0035] 3. The present invention further accelerates heat dissipation and ensures the normal operation of the travel motor controller by providing a heat dissipation cavity and heat sinks in the base and separating the first PCB connector.

[0036] 4. The utility model prevents dust from falling into the PCB board and affecting the electrical performance of the PCB board by providing a dust cover, and further improves the material of the dust cover to optimize its heat dissipation performance.

[0037] The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A travel motor controller for a lawn mower, characterized in that: It includes a heat dissipation base plate, on which a PCB board is installed; It also includes several first PCB connectors, which are all fixed on the board surface of the heat dissipation base plate and connected to any end of the PCB board. Each of the first PCB connectors is provided with at least one first interface, which is connected to the PCB board to form a channel for electrically connecting the PCB board to the travel motor of the lawn mower.

2. A travel motor controller for a lawn mower according to claim 1, characterized in that: Several of the first PCB connectors are provided with a raised fixing block on one side away from the heat dissipation base plate, and a fixing knob is provided on the one side away from the heat dissipation base plate. The fixing knob is provided with a rotating end and a fixed end, and the fixed end passes through the fixing block and is connected to a channel for electrical connection with the PCB board.

3. A travel motor controller for a lawn mower according to claim 2, characterized in that: A surface of the fixing block close to the PCB board is configured as an inclined surface, and the inclined surface and a surface of the first PCB connector close to the fixing block form a placement platform.

4. A travel motor controller for a lawn mower according to claim 1, characterized in that: A plurality of raised positioning blocks are further provided at both ends of the PCB board, and the first PCB connectors are fixed on both sides of the positioning blocks so that a gap is provided between any two first PCB connectors at any end of the PCB board.

5. The travel motor controller for a lawn mower according to claim 1, characterized in that: It also includes several second PCB connectors, which are all fixed on the board surface of the PCB board away from the heat dissipation base plate. The several second PCB connectors are each provided with at least one second interface, which is connected to the PCB board to form a channel for electrically connecting the PCB board and the functional device.

6. A travel motor controller for a lawn mower according to claim 1, characterized in that: It also includes a base, one side of which is configured as an inwardly concave groove body, the groove body is adaptively connected to the heat dissipation base plate, and a gap is left between the bottom surface of the groove body and the heat dissipation base plate to form a heat dissipation cavity.

7. A travel motor controller for a lawn mower according to claim 6, characterized in that: A plurality of heat sinks are also installed on a side of the base away from the tank body.

8. The travel motor controller for a lawn mower according to claim 3, characterized in that: It also includes a dust cover, which is provided with a shielding part and a fixing part. The shielding part is adaptively connected to the placement table, and the fixing part is detachably connected to a side of the heat dissipation base plate on which the PCB board is installed. The dust cover is also provided with a plurality of windows for exposing the first PCB connector.

9. A travel motor controller for a lawn mower according to claim 8, characterized in that: The dust cover is designed to be aluminum for heat dissipation.

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