A multi-purpose portable gardening tool with multiple heads and combinations, comprising a main machine (1), a function head (2), an extension tube (3), an extension intermediate head (4) and a function intermediate head (5);
- the function head (2) or the extension intermediate head (4) is in spigot joint with a head end of the main machine (1), a head end of the extension intermediate head (4) is connected to the extension tube (3) having the function intermediate head (5) disposed at a head end thereof, and the function head (2) is in spigot joint with a head end of the function intermediate head;
- a power supply cord or a mild steel wire drive shaft (9-1) is disposed in the extension tube (3), a crankshaft sleeve (9-2) is disposed at a head end of the mild steel wire drive shaft (9-1), a connecting shaft core (9-3) is disposed at a tail end of the extension tube (3), and power output shafts of the crankshaft sleeve (9-2) and the main machine (1) or power input gears or screws of the extension intermediate head (4) are engaged with each other;
- the main machine (1) comprises a grip handle (6) and a mobile battery pack (7), insertion chutes (8) and electrically connected PIN connectors (9) are disposed on the top of the mobile battery pack (7), battery slots (10) matched with the insertion chutes (8) are disposed at the bottom or a tail end or both bottom and tail end of the grip handle (6), main machine wired PINs (11) are disposed in the battery slots (10), the insertion chutes (8) of the mobile battery pack (7) are in spigot joint with the battery slots (10), the electrically connected PIN connectors (9) and the main machine wired PINs (11) are integrally fastened, and the mobile battery pack (7) is connected to the grip handle (6);
- the function intermediate head (5) comprises a function head junction (24), a turning support (25), a circular rotation shaft (26), a control unit (27) and a front insertion sleeve (23), the turning support (25) which rotates around the circular rotation shaft (26) is disposed in the front of the circular rotation shaft (26) and is provided with a function connecting PIN (29) which is integrally formed with and protruded on a head of the turning support (25), and function head connecting chutes (30) are respectively disposed on left and right outer edges of the function connecting PIN (29);
- the control unit (27) is fixedly disposed behind the circular rotation shaft (26), and a function head start button (31) is disposed on the top or an outer side of the control unit (27), and the front insertion sleeve (23) which is integrally formed with the control unit (27) is disposed on the bottom of the control unit (27);
- the function head (2) comprises a connection machine head (32) and a function machine head (33), the function machine head (33) comprises a chain saw function head (34), a grass trimmer function head (35), a bush saw head (36) and a leaf blower head (37), and the function machine head (33) is provided with the connection machine head (32) integrally;
- an insertion chute (38) is outwardly disposed on the connection machine head (32), connected to the function head connecting chutes (30) of the function head (2) junction and also provided with a drive PIN connector (39), and the drive PIN connector is fastened with the function connecting PIN to form an electric connection;
- an extension junction (12) which is provided with an extension chute (13) is further disposed at a head end of the grip handle (6), and the extension chute (13) is provided with an extension electric PIN connector (14) inside and further provided with a fastening device (15);
- the main machine (1) is in spigot joint with the insertion chute (38) of the connection machine head (32) through the insertion chute (8) of the grip handle (6) so that the fixed connection relation between the main machine (1) and the connection machine head (32) is strengthened on the side face through the fastening device (15);
- the extension intermediate head (4) comprises an extension end (16) and a main machine end (17), and the shape of the extension end (16) is matched with that of the extension tube (3);
- a rear insertion sleeve (18) is disposed at a head end of the extension intermediate head (4) and a driven insertion chute (19) of the insertion chute of the function head (2) is disposed at tail end thereof, and a driven PIN connector (20) matched with the electrically connected PIN connector (9) is disposed on the driven insertion chute (19);
- the extension tube (3) is inserted into the rear insertion sleeve (18), the driven insertion chute (19) and the insertion chute of the function head (2) are in spigot joint with each other in a sliding manner, and an electric connection is formed between the main machine (1) and the extension intermediate head (4) after the driven PIN connector (20) and the electrically connected PIN connector (9) are fastened with each other;
- the extension tube (3) at least comprises tube bodies (21) and a tube adapter (22), a head end of each tube body (21) is inserted into the rear insertion sleeve (18) of the extension intermediate head (4) and a tail end thereof is inserted into the front insertion sleeve (23) so as to connect to the function intermediate head (5), and a connection of spigot joint between any two tube bodies (21) is strengthened by the adapter sleeve (22);
- and the tail end of the tube body (21) is inserted into the front insertion sleeve (23);
- the chain saw function head (34) comprises the connection machine head (32), a motor power unit (1-1) and a chain saw blade (1-2), an upper handle (1-3) and a control handle (1-4) are disposed at the top of the motor power unit (1-1) and a sub-end slot (1-5) is disposed at a tail end thereof;
- a drive motor (1-6), a drive shaft of which is connected to the chain saw blade (1-2), is disposed in the motor power unit (1-1), and a brake neck (1-7) is disposed at a tail end of the chain saw blade (1-2);
- the drive motor (1-6) is provided with an emergency brake module (1-8) which is connected to the drive motor (1-6) and the control handle (1-4) respectively and comprises a brake (1-9), a control circuit (1-10), a handle control circuit (1-11) and a circuit controller (1-12) which is electrically connected to the control circuit (1-10);
- one end of the brake (1-9) is electrically connected to a power supply port (1-13) of an adopter through the control circuit (1-10) and the other end thereof is provided with the handle control circuit (1-11) electrically connected to the control handle (1-4) in an opening-closing manner, the control handle (1-4) comprises a handle body (1-14) having a brake torsion spring (1-15) disposed at a root thereof, a tumbler (1-16) having a split brake reed (1-17) disposed on the bottom thereof is disposed on the bottom of the brake torsion spring (1-15), one end of the split brake reed (1-17) is connected to the drive motor (1-6) and the other end is connected to a safety circuit (1-18);
- the split brake reed (1-17) is splayed, and a toggle contact switch (1-19) is disposed at an upper end of a tail of the split brake reed (1-17), a control handle groove (1-20) is disposed on a head at a top end of the motor power unit (1-1), the control handle (1-4) is inserted into the control handle groove (1-20) and fixed in the motor power unit (1-1) by the brake torsion spring (1-15), the control handle groove (1-20) comprises a left slotted piece (1-21) and a right slotted piece (1-22), a limit piece (1-23) is disposed on an outer side of the brake torsion spring (1-15) of the control handle (1-4), and a triangle top (1-24) is disposed in the center of the split brake reed (1-17);
- the leaf blower head (37) comprises a drive elbow tube (2-1), an air inlet power unit (2-2) and an air duct tube (2-3);
- the mild steel wire drive shaft is sleeved in the drive elbow tube (2-1), and the air inlet power unit (2-2) comprises a continuously variable transmission hearing (2-4) into which an air rotor (2-5) is inserted, the bottom of the air rotor (2-5) is connected to a turbofan (2-6), a turbofan housing and a turbine disc (2-7) of the air duct tube (2-3), the 9-shaped turbofan housing (2-8) is provided outside the turbofan (2-6) and a turbine air duct (2-9) is formed between the 9-shaped turbofan housing (2-8) and the turbofan (2-6);
- an air inlet hemisphere (2-10) is disposed on the bottom of the turbine disc 2-7, a reverse-turbine air duct (2-11) is reversely disposed around the air inlet hemisphere and the 9-shaped turbofan housing (2-8), and splitter dampers (2-12) are disposed at a head end of the turbine air duct (2-9);
- the bush saw head (36) comprises the connection machine head (32) and a main bush saw (3-1), the connection machine head (32) is disposed at a tail end of the main bush saw (3-1) which is covered by a bush saw housing (3-2) and provided with a saw motor (3-3) inside, the saw motor (3-3) is disposed on a motor base (3-4) having a drive wheel (3-5) disposed on the bottom thereof and a saw blade supporting guide rod (3-6) at a front end thereof;
- the saw motor (3-3) is provided with a number of saw blades (3-7) spliced together, a tow line (3-8) hinged on the drive wheel (3-5) is disposed at a tail end of the saw blade (3-7), and the bush saw housing (3-2) is provided with a pressure baffle (3-10) at a front end of a rotary handle (3-9), and detachable metal pressure rods, head ends of which are crimped onto multistage compression legs (3-11) disposed at a head end of the saw blade supporting guide rod (3-6), are disposed in front of the pressure baffle (3-10);
- the grass trimmer function head (35) comprises the connection machine head (32) and a main grass trimmer (4-2) comprising a semi-arc housing (4-3);
- a grass trimmer drive unit (4-4), which extends outwardly to be provided with the connection machine head (32), is disposed on the top of the semi-arc housing (4-3);
- a grass trimmer motor (4-5) is disposed in the grass trimmer drive unit (4-4), and a grass trimmer shaft (4-6) of the grass trimmer motor (4-5) is exposed from a driving hole (4-7) on the top of the semi-arc housing (4-3) by passing over the semi-arc housing (4-3) and is in screwed connection with a multicolor grass trimmer head (4-8), the multicolor grass trimmer head (4-8) comprises an accommodating base (4-8a), a shrink disk (4-9), a coil (4-10) and a trimmer line set (4-11);
- the accommodating base (4-8a) is in a shape of round bowl;
- a head cover (4-13), having a mounting hole (4-14) disposed at a position where an axis thereof is located, is disposed on the top of a bowl-shaped tube (4-12) of the accommodating base (4-8a), the mounting hole (4-14) is in screwed connection with the grass trimmer shaft (4-6), and an idler shaft (4-15) is provided below the mounting hole (4-14);
- a pair of cover rotation clips (4-16) are disposed on a lateral axis of the howl-shaped tube (4-12) and a line end clip (4-17) is disposed on a vertical axis thereof, the cover rotation clips (4-16) are composed of ]-shaped concave pieces (4-18) and cramps (4-19) in front of the concave pieces, catching grooves are formed between the concave pieces (4-18) and the cramps (4-19), and an eyelet hole (4-21) is disposed in the line end clip (4-17);
- the shrink disk comprises a chassis (4-22) and splicing pieces (4-23) disposed on the chassis (4-22) vertically and upwardly, a coil bottom mounting hole (4-24) is disposed at a position where an axis of the shrink disk (4-9) is located, and the splicing pieces (4-23) are clamped into the catching grooves (4-20);
- the coil (4-10) comprises top fasteners (4-25), a spacer (4-26), a coil column (4-27) and bottom fasteners (4-28), the top fasteners (4-25) are disposed at the top of the coil column (4-27) and the bottom fasteners (4-28) are disposed at a tail end thereof;
- the top fasteners (4-25) and the spacer (4-26) form an upper bale tray (4-29), the coil column (4-27) and the bottom fasteners (4-28) form a lower hale tray (4-30), and the trimmer line set is sleeved in the upper bale tray (4-29) and the lower bale tray (4-30);
- the trimmer line set is a winding line or a line coil assembly and at least comprises an upper line coil assembly (4-31) sleeved in the upper bale tray (4-29) and a lower line coil assembly (4-32) sleeved in the lower bale tray (4-30);
- the coil column (4-27), having a sealing head (4-33) on the bottom thereof, is a hollow tube inside, a pay-off snap ring (4-34) is tightly disposed above the sealing head inside the tube body of the coil column (4-27) and is sleeved with a pay-off spring (4-35) with a top resisting against the shrink disk (4-9);
- and
- the fastening device (15) is a top fastening device (5-1), or an internal pressure fastening device (6-1), or a lateral fastening device (7-1).