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EP-3993235-B1 - POWER HEAD AND OUTDOOR POWER EQUIPMENT USING THE SAME

EP3993235B1EP 3993235 B1EP3993235 B1EP 3993235B1EP-3993235-B1

Inventors

  • LI, Shuhua
  • KAN, Fei

Dates

Publication Date
20260506
Application Date
20211101

Claims (10)

  1. A power head (100), used to output power, comprising: a housing assembly (1), comprising a first housing (11) and a second housing (12), the first housing (11) and the second housing (12) defining a housing space, a motor assembly (2), arranged in the housing space, the motor assembly (2) comprising a motor (21), one end of an output shaft (211) of the motor (21) extending to outside of the housing assembly (1), which motor (21) is arranged in the housing assembly (1) through a mounting part (26), wherein the mounting part (26) comprises a first mounting portion (261) and a second mounting portion (262) connected with the first mounting portion (261); the motor (21) is connected with the second mounting portion (262), and the second mounting portion (262) is provided with a through hole (2621) for the output shaft (211) of the motor (21) to pass through, a battery pack assembly (3), arranged in the housing space, the battery pack assembly (3) supplying power to the motor assembly (2), and a base (4), wherein the base (4) is connected to a bottom of the second housing (12), characterized in that the first mounting portion (261) is arranged between the second housing (12) and the base (4), wherein the first mounting portion (261) is provided with a first mounting hole (2611), the base (4) is provided with a second mounting hole (41) and a first protruding part (42), when the base (4) is assembled with the second housing (12), the first protruding part (42) passes through the first mounting hole (2611) and is inserted into the second housing (12), wherein the second housing (12) is provided with a connection part (124), and the second housing (12) is connected with the base (4) through the connection part (124); the connection part (124) is recessed towards an inside of the second housing (12) and the housing assembly (1) is provided with an air inlet (122) and an air outlet (123), the air outlet (123) is arranged at the connection part (124) of the second housing (12), and the air outlet (123) is open towards a side of the housing assembly (1).
  2. The power head (100) according to claim 1, wherein the motor assembly (2) further comprises a second fan (27) arranged on the output shaft (211) of the motor (21).
  3. The power head (100) according to claim 2, wherein the housing assembly (1) further comprises a first cover (13), and the first cover (13) is provided with a central hole (131) for the output shaft (211) of the motor (21) to pass through; the second fan (27) is located between the first cover (13) and the second mounting portion (262).
  4. The power head (100) according to claim 3, wherein the first cover (13) is provided with a second protruding part (132), and a bearing (135) for the output shaft (211) of the motor (21) to pass through is arranged in the second protruding part (132).
  5. The power head (100) according to claim 3, wherein the first cover (13) is attached to the second mounting portion (262) to define a volute-like structure, the volute-like structure is provided with a port, and the port (133) is connected with the air outlet (123) to guide airflow to the air outlet (123).
  6. The power head (100) according to claim 3, wherein the second mounting portion (262) is provided with an internal vent (2623), and air flowing through an inside of the motor (21) flows into a space defined by the first cover (13) and the second mounting portion (262) through the internal vent (2623).
  7. The power head (100) according to claim 6, wherein the second mounting portion (262) is further provided with an external vent (2622), and the external vent (2622) is located at a periphery of the internal vent (2623).
  8. The power head (100) according to any one of the preceding claims, wherein the housing assembly (1) further comprises a second cover (14) that connects the first housing (11) with the second housing (12); the motor assembly (2) comprises a first control board (24), the first housing (11) and the second housing (12) are provided with a supporting part (113), and the first control board (24) is arranged between the supporting part (133) and the second cover (14).
  9. The power head (100) according to any one of the preceding claims, wherein the housing assembly (1) is provided with a first cavity (111) and a second cavity (112), the motor assembly (2) is arranged in the first cavity (111), the battery pack assembly (3) is arranged in the second cavity (112), the first housing (11) and the second housing (12) surrounds and defines the first cavity (111), and the second cavity (112) is opened on the first housing (11).
  10. An outdoor power equipment (200), comprising: a main body (203), a working assembly (201), connected with the main body (203), a travelling assembly (202), connected with the main body (203), and a power head (100) according to any one of claims 1 to 9, mounted on the main body (203).

Description

TECHNICAL FIELD The disclosure relates to the technical field of outdoor power equipment, and particularly relates to a power head and an outdoor power equipment using the power head. BACKGROUND At present, engines are mostly used in outdoor power equipment or garden tools, which are inconvenient to control, noisy, serious in pollution, and cause potential safety hazards in gasoline storage. Batteries are currently the most widely used clean energy. With the continuous improvement of battery capacity, the battery life will gradually exceed the single fuel consumption time of the fuel engine. Power heads with batteries or outdoor power equipment driven by power heads are very promising. However, the conventional power head has complex structure, inconvenient assembly, and poor heat dissipation. In view of this, it is indeed necessary to provide a power head driven by a battery to solve the above-mentioned problems. CN 211353155U discloses a power head comprising a motor assembly, an energy device and a shell assembly covering the outer side of the motor assembly and the outer side of the energy device. The motor assembly comprises a motor base and a motor fixed to the motor base. The shell assembly comprises a housing which is assembled and matched with the motor base; an air inlet inclining towards the lower rear portion and an air inlet cavity connected with the air inlet are formed in the top of the housing. The two air inlets and the two air inlet cavities are symmetrically formed in the left side and the right side of the housing correspondingly. The air inlet cavity is of a U-shaped structure with an opening in the upper portion. The housing covers the top of the air inlet cavity to form a closed air flow channel, the bottom of the motor base is closed, the side edge of the motor base is provided with an air outlet communicated with the outside, and cooling airflow enters from the air inlet, flows into the motor along the air flow channel and then flows out from the air outlet. EP 3648315 discloses an electric power unit that is mounted on a mounting object, the electric power unit comprising a motor and electrical equipment for driving the motor, wherein the motor has a first attachment portion that is attached to the mounting object, and a second attachment portion to which the electrical equipment is attached. US2020/196522 discloses a power assembly and a garden tool having the power assembly. The power assembly includes a housing, a driving unit received in the housing and a power supplying unit received in the housing for powering the driving unit. The driving unit includes a driving motor and a control panel assembly located upon the driving motor. The housing has at least one heat dissipation air duct formed therein for airflow passing through the driving unit. The heat dissipation air duct has an air inlet for air intaking and an air outlet for air flowing out, and the air outlet is located at a bottom of the housing and open towards a lateral side of the housing. SUMMARY The disclosure provides a power head and an outdoor power equipment using the power head. The power head of the disclosure is energy-saving and environmentally friendly. It has a simple structure. It is convenient to assemble and has a good heat dissipation effect. The disclosure provides a power head according to claim 1. Preferred embodiments are disclosed in the dependent claims 2 to 9. The disclosure further provides an outdoor power equipment according to claim 10. In summary, the power head of the disclosure integrates the motor assembly and the battery pack assembly to replace the engine, which reduces energy consumption, saves energy and protects environment. In addition, the power head of the disclosure has simple structure, convenient assembly and good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural schematic view of a power head of the disclosure.FIG.2 is an exploded schematic view of the power head of the disclosure.FIG. 3 is a structural schematic view of a mounting part of the power head of the disclosure.FIG. 4 is a structural schematic view of a first housing of the power head of the disclosure.FIG. 5 is a structural schematic view of a bottom and a base of the power head of the disclosure.FIG. 6 is a structural schematic view of a second housing of the power head of the disclosure.FIG. 7 is a schematic view of the sectional structure of a fixed connection among the second housing, the mounting part and the base of the power head of the disclosure.FIG. 8 is a structural schematic view of a mounting surface of the base of the power head of the disclosure.FIG. 9 is a partial structural schematic view of the power head of the disclosure.FIG. 10 is a schematic view of a side cross-sectional structure of the power head of the disclosure.FIG. 11 is a schematic view of a bottom structure of the second housing of the power head of the disclosure.FIG. 12 is a schematic view of air flow